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University of Toronto
1.
Pop, Alin Cristian.
Emissions Characteristics of a Natural Gas Fuelled Engine.
Degree: 2016, University of Toronto
URL: http://hdl.handle.net/1807/79567
► A naturally aspirated former Ford hydrogen research internal combustion engine was tested at the University of Toronto. The engine was fuelled with compressed natural gas…
(more)
▼ A naturally aspirated former Ford hydrogen research internal combustion engine was tested at the University of Toronto. The engine was fuelled with compressed natural gas and run at the road load power condition at two different fuel/air equivalence ratios: phi = 0.775 and phi = 0.855. Particulate matter size distributions, brake thermal efficiency, oxides of nitrogen, hydrocarbon, carbon monoxide, and carbon dioxide emissions are presented. Due to extensive modifications made to this engine for hydrogen operation, the results concluded that particulate matter emitted from lean-burn compressed natural gas operation are below the detectable range of an engine exhaust particle sizer and weighted filters. Since particulate matter emissions have been linked to health effects, these results suggest that it is possible to produce an engine that produces minimal particulate matter emissions.
M.A.S.
Advisors/Committee Members: Wallace, James S., Mechanical and Industrial Engineering.
Subjects/Keywords: emission; engine; hydrogen; internal combustion engine; natural gas; particulate matter; 0537
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APA (6th Edition):
Pop, A. C. (2016). Emissions Characteristics of a Natural Gas Fuelled Engine. (Masters Thesis). University of Toronto. Retrieved from http://hdl.handle.net/1807/79567
Chicago Manual of Style (16th Edition):
Pop, Alin Cristian. “Emissions Characteristics of a Natural Gas Fuelled Engine.” 2016. Masters Thesis, University of Toronto. Accessed March 06, 2021.
http://hdl.handle.net/1807/79567.
MLA Handbook (7th Edition):
Pop, Alin Cristian. “Emissions Characteristics of a Natural Gas Fuelled Engine.” 2016. Web. 06 Mar 2021.
Vancouver:
Pop AC. Emissions Characteristics of a Natural Gas Fuelled Engine. [Internet] [Masters thesis]. University of Toronto; 2016. [cited 2021 Mar 06].
Available from: http://hdl.handle.net/1807/79567.
Council of Science Editors:
Pop AC. Emissions Characteristics of a Natural Gas Fuelled Engine. [Masters Thesis]. University of Toronto; 2016. Available from: http://hdl.handle.net/1807/79567

King Abdullah University of Science and Technology
2.
Almatrafi, Fahad A.
Narrow-throat Pre-chamber Combustion with Ethanol, a Comparison with Methane.
Degree: Physical Science and Engineering (PSE) Division, 2020, King Abdullah University of Science and Technology
URL: http://hdl.handle.net/10754/662605
► Pre-Chamber combustion systems are gaining popularity in Internal Combustion Engines (ICE) with the increasing emissions regulations due to their advantages in improving fuel economy by…
(more)
▼ Pre-Chamber
combustion systems are gaining popularity in
Internal Combustion Engines (ICE) with the increasing emissions regulations due to their advantages in improving fuel economy by increasing the lean limit and cutting emission, especially NOx. In pre-chamber
Combustion, flame jets shoot out from the pre-chamber orifices into the main chamber and generates several ignition points that promote a rapid burn rate of the lean mixture (air-excess ratio (λ) >1) in the main chamber. This work focused on studying two different fuels in the main chamber, lean limit,
combustion efficiency (ηc), and emissions. A single-cylinder heavy-duty
engine equipped with a narrow throat active pre-chamber was used. Two fuels were tested in the main chamber, Methane (CH4) and Ethanol (C2H5OH), the first fuel is used as a baseline, while keeping the pre-chamber fueled by Methane only. The
engine was operated at a fixed speed, intake pressure, and spark-timing. The amount of fuel injected was varied to attain different global λ, then at each global λ; the amount of fuel injected to the Pre-chamber was varied to observe the effect of the pre-chamber λ. Different air intake temperatures were tested to see the effect on
combustion efficiency. Results from the study showed an increase in the lean-limit using Ethanol in the main chamber compared to using only Methane in both chambers. However, lower ηc than that of the Methane was reported; this is due to a combination of the narrow-throat feature and the high heat of vaporization of Ethanol, ηc showed improvement when the air intake temperature increased.
Advisors/Committee Members: Johansson, Bengt (advisor), Magnotti, Gaetano (committee member), Knio, Omar (committee member), Parsani, Matteo (committee member).
Subjects/Keywords: Internal combustion engine; Pre-chamber; Lean combustion; Ethanol
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Almatrafi, F. A. (2020). Narrow-throat Pre-chamber Combustion with Ethanol, a Comparison with Methane. (Thesis). King Abdullah University of Science and Technology. Retrieved from http://hdl.handle.net/10754/662605
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Almatrafi, Fahad A. “Narrow-throat Pre-chamber Combustion with Ethanol, a Comparison with Methane.” 2020. Thesis, King Abdullah University of Science and Technology. Accessed March 06, 2021.
http://hdl.handle.net/10754/662605.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Almatrafi, Fahad A. “Narrow-throat Pre-chamber Combustion with Ethanol, a Comparison with Methane.” 2020. Web. 06 Mar 2021.
Vancouver:
Almatrafi FA. Narrow-throat Pre-chamber Combustion with Ethanol, a Comparison with Methane. [Internet] [Thesis]. King Abdullah University of Science and Technology; 2020. [cited 2021 Mar 06].
Available from: http://hdl.handle.net/10754/662605.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Almatrafi FA. Narrow-throat Pre-chamber Combustion with Ethanol, a Comparison with Methane. [Thesis]. King Abdullah University of Science and Technology; 2020. Available from: http://hdl.handle.net/10754/662605
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Université de Sherbrooke
3.
Leboeuf, Maxime.
Modeling the sealing of the X-Mini engine by LiquidPiston: Modélisation de l'étanchéité du moteur X-Mini de LiquidPiston.
Degree: 2019, Université de Sherbrooke
URL: http://hdl.handle.net/11143/16106
► Abstract: Rotary engines are useful for applications that require high power density. However, these engines often show significant leakage from the combustion chamber, premature wear…
(more)
▼ Abstract: Rotary engines are useful for applications that require high power density. However, these engines often show significant leakage from the
combustion chamber, premature wear of the seals and high oil consumption. LiquidPiston's X-
Engine family of engines use a different geometry than traditional Wankel-type motors and one of their prototypes, the X-Mini, could reduce rotary
engine leakage by eliminating significant leakage mechanisms. Being a new type of
engine, very few studies have been conducted on this
engine sealing performance. This project focuses on quantifying the
combustion chamber leaks of the X-Mini
engine. A model of the seals is developed and used to estimate
engine leakage. The model is able to link seal dynamics to gas leaks, allowing the identification and quantification of each of the
engine's leak mechanisms. It includes the gas pressure forces, the hydrodynamic forces created by the oil layers on the walls, the spring forces, the pseudo forces associated with the rotation of the rotor and the contact forces. The model uses curved elements to model the face seal and a dual-grid discretization technique to obtain precise results while keeping the computational time low. Each function used to calculate the forces was validated by comparing with an analytical solution. The finite element model was validated by comparing the numerical solution with an analytical solution for the deformation of curved beams, and with a numerical solution given by a commercial finite element software. According to the model, this
engine has a 65% smaller leakage area than a Wankel
engine of similar size, while dynamometer testing shows a 35% smaller leakage area. These results bring the
engine approximatively midway between the piston and Wankel engines in terms of sealing performance.
Advisors/Committee Members: Picard, Mathieu (advisor).
Subjects/Keywords: Moteur rotatif; Rotary engine; Scellement; Moteur à combustion interne; Sealing; Internal combustion engine
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Leboeuf, M. (2019). Modeling the sealing of the X-Mini engine by LiquidPiston: Modélisation de l'étanchéité du moteur X-Mini de LiquidPiston. (Masters Thesis). Université de Sherbrooke. Retrieved from http://hdl.handle.net/11143/16106
Chicago Manual of Style (16th Edition):
Leboeuf, Maxime. “Modeling the sealing of the X-Mini engine by LiquidPiston: Modélisation de l'étanchéité du moteur X-Mini de LiquidPiston.” 2019. Masters Thesis, Université de Sherbrooke. Accessed March 06, 2021.
http://hdl.handle.net/11143/16106.
MLA Handbook (7th Edition):
Leboeuf, Maxime. “Modeling the sealing of the X-Mini engine by LiquidPiston: Modélisation de l'étanchéité du moteur X-Mini de LiquidPiston.” 2019. Web. 06 Mar 2021.
Vancouver:
Leboeuf M. Modeling the sealing of the X-Mini engine by LiquidPiston: Modélisation de l'étanchéité du moteur X-Mini de LiquidPiston. [Internet] [Masters thesis]. Université de Sherbrooke; 2019. [cited 2021 Mar 06].
Available from: http://hdl.handle.net/11143/16106.
Council of Science Editors:
Leboeuf M. Modeling the sealing of the X-Mini engine by LiquidPiston: Modélisation de l'étanchéité du moteur X-Mini de LiquidPiston. [Masters Thesis]. Université de Sherbrooke; 2019. Available from: http://hdl.handle.net/11143/16106

Brno University of Technology
4.
Kučera, Petr.
Historický vývoj pístových spalovacích motorů: Historical development of piston internal combustion engines.
Degree: 2019, Brno University of Technology
URL: http://hdl.handle.net/11012/7883
► This work aims to characterize the basic stages of development of piston combustion engines for use in vehicles. The first part contains familiar with the…
(more)
▼ This work aims to characterize the basic stages of development of piston
combustion engines for use in vehicles. The first part contains familiar with the problem of these engines, their basic structure and description and the beginnings of their development. The second part is focused on current trends in the development and way the
combustion engines could proceed in the future.
Advisors/Committee Members: Píštěk, Václav (advisor), Vopařil, Jan (referee).
Subjects/Keywords: Pístový spalovací motor; zážehový; vznětový motor; spalování; Piston internal combustion engine; gasoline; diesel engine; combustion
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Kučera, P. (2019). Historický vývoj pístových spalovacích motorů: Historical development of piston internal combustion engines. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/7883
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Kučera, Petr. “Historický vývoj pístových spalovacích motorů: Historical development of piston internal combustion engines.” 2019. Thesis, Brno University of Technology. Accessed March 06, 2021.
http://hdl.handle.net/11012/7883.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Kučera, Petr. “Historický vývoj pístových spalovacích motorů: Historical development of piston internal combustion engines.” 2019. Web. 06 Mar 2021.
Vancouver:
Kučera P. Historický vývoj pístových spalovacích motorů: Historical development of piston internal combustion engines. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Mar 06].
Available from: http://hdl.handle.net/11012/7883.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Kučera P. Historický vývoj pístových spalovacích motorů: Historical development of piston internal combustion engines. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/7883
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universitat Politècnica de València
5.
Salvador Iborra, Josep.
A contribution to the global modeling of heat transfer processes in Diesel engines
.
Degree: 2020, Universitat Politècnica de València
URL: http://hdl.handle.net/10251/149575
► [EN] Current challenges in research and development of powertrains demand new computational tools capable of simulating vehicle operation under very diverse conditions. This is due,…
(more)
▼ [EN] Current challenges in research and development of powertrains demand new computational tools capable of simulating vehicle operation under very diverse conditions. This is due, among other reasons, to new homologation standards in the automotive sector requiring compliance of exhaust emissions regulations under any possible driving condition on the road. Global
engine or vehicle models provide many advantages to engineers because they allow to reproduce the entire system under study, considering the physical processes that take place in different components and the interactions among them. This thesis aims to enable the modeling of heat transfer processes in a complete
engine simulation tool developed at CMT-Motores Térmicos research institute. This 0D/1D simulation tool is called Virtual
Engine Model (VEMOD).
The development of heat transfer models comprises the
engine block and the ancillary systems. The model of heat transfer in the
engine block deals with the central problem of in-cylinder convection by means of a combination of experimental research, CFD simulation and multizone 0D modeling. The other thermal processes present in the
engine block are examined in order to implement suitable submodels. Once the model is complete, it undergoes a validation with experimental transient tests. Afterwards, the ancillary systems for
engine thermal management are brought into focus. These systems are considered by means of two new models: a model of heat exchangers and a model of thermo-hydraulic circuits. The development of those models is reported in detail.
Lastly, with the referred thermal models integrated in the global simulation tool, a validation study is undertaken. The goal is to validate the ability of the Virtual
Engine Model to capture the thermal response of a real
engine under various operating conditions. To achieve that, an experimental campaign combining tests under steady-state operation, under transient operation and at different temperatures is conducted in parallel to the corresponding simulation campaign. The capacity of the global
engine simulations to replicate the measured thermal evolution is finally demonstrated.
Advisors/Committee Members: Olmeda González, Pablo Cesar (advisor).
Subjects/Keywords: Heat transfer;
Internal combustion engine;
Diesel engine;
In-cylinder heat rejection;
Thermal management;
Global engine model;
Virtual engine model
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Salvador Iborra, J. (2020). A contribution to the global modeling of heat transfer processes in Diesel engines
. (Doctoral Dissertation). Universitat Politècnica de València. Retrieved from http://hdl.handle.net/10251/149575
Chicago Manual of Style (16th Edition):
Salvador Iborra, Josep. “A contribution to the global modeling of heat transfer processes in Diesel engines
.” 2020. Doctoral Dissertation, Universitat Politècnica de València. Accessed March 06, 2021.
http://hdl.handle.net/10251/149575.
MLA Handbook (7th Edition):
Salvador Iborra, Josep. “A contribution to the global modeling of heat transfer processes in Diesel engines
.” 2020. Web. 06 Mar 2021.
Vancouver:
Salvador Iborra J. A contribution to the global modeling of heat transfer processes in Diesel engines
. [Internet] [Doctoral dissertation]. Universitat Politècnica de València; 2020. [cited 2021 Mar 06].
Available from: http://hdl.handle.net/10251/149575.
Council of Science Editors:
Salvador Iborra J. A contribution to the global modeling of heat transfer processes in Diesel engines
. [Doctoral Dissertation]. Universitat Politècnica de València; 2020. Available from: http://hdl.handle.net/10251/149575

Texas A&M University
6.
Bajwa, Abdullah Umair.
First and Second Law Analyses of a Large Bore Two Stroke Spark Ignition Engine Fueled with Natural Gas.
Degree: MS, Mechanical Engineering, 2016, Texas A&M University
URL: http://hdl.handle.net/1969.1/159034
► A zero dimensional thermodynamic model with no spatial resolution has been developed to analyze the effectiveness of energy and exergy utilization in a large bore,…
(more)
▼ A zero dimensional thermodynamic model with no spatial resolution has been developed to analyze the effectiveness of energy and exergy utilization in a large bore, single cylinder, two-stroke
engine. Exergy analysis was performed to supplement energy analysis to gain deeper insights into the exploitation of the essence of energy during
engine operation. The closed and the open portions of the cycle were modeled in this study using theory of gas dynamics and thermodynamics. Suitable forms of the first and second laws of thermodynamics were applied to a two zone (burned and unburned) control mass during the closed portion of the cycle and control volume during the open portion of the cycle, respectively. A Wiebe function describes the fuel burning rate and was used to simulate
combustion. All simulated results were validated using experimental data. Exergy transfers in and out of the system accompanying chemical reactions, work, heat transfer and flows were traced and the major sources of exergy destruction (irreversibilities) identified. Major findings from the analysis were that 14% of the fuel’s exergy was destroyed because of
combustion and almost half (46%) of the initial exergy is lost with exhaust gases. Compared to four stroke engines the percentage exergy destruction is relatively less because of lower cylinder temperatures. These findings highlight shortcomings in the thermodynamic design of the
engine and help direct future research efforts.
Advisors/Committee Members: Jacobs, Tim (advisor), Caton, Jerald (committee member), Karpetis, Adonios (committee member).
Subjects/Keywords: Internal Combustion Engine; Exergy; Second Law Analysis; Two Stroke Engine; Two Zone Model
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Bajwa, A. U. (2016). First and Second Law Analyses of a Large Bore Two Stroke Spark Ignition Engine Fueled with Natural Gas. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/159034
Chicago Manual of Style (16th Edition):
Bajwa, Abdullah Umair. “First and Second Law Analyses of a Large Bore Two Stroke Spark Ignition Engine Fueled with Natural Gas.” 2016. Masters Thesis, Texas A&M University. Accessed March 06, 2021.
http://hdl.handle.net/1969.1/159034.
MLA Handbook (7th Edition):
Bajwa, Abdullah Umair. “First and Second Law Analyses of a Large Bore Two Stroke Spark Ignition Engine Fueled with Natural Gas.” 2016. Web. 06 Mar 2021.
Vancouver:
Bajwa AU. First and Second Law Analyses of a Large Bore Two Stroke Spark Ignition Engine Fueled with Natural Gas. [Internet] [Masters thesis]. Texas A&M University; 2016. [cited 2021 Mar 06].
Available from: http://hdl.handle.net/1969.1/159034.
Council of Science Editors:
Bajwa AU. First and Second Law Analyses of a Large Bore Two Stroke Spark Ignition Engine Fueled with Natural Gas. [Masters Thesis]. Texas A&M University; 2016. Available from: http://hdl.handle.net/1969.1/159034

Lithuanian University of Agriculture
7.
Sprindžiūnas,
Gintaras.
Aplinkos akustinės taršos tyrimas dirbant
traktoriui nenusistovėjusiame režime.
Degree: Master, Mechanical Engineering, 2009, Lithuanian University of Agriculture
URL: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20090114_154815-40333
;
► Tikslas. Nustatyti traktoriaus apkrovų ir greitinio režimo transporto darbuose įtaką garso slėgio lygiui atskiruose garso lauko taškuose. Didžiausią triukšmą į aplinką skleidžia stovintis traktorius MTZ-80UK.…
(more)
▼ Tikslas. Nustatyti traktoriaus apkrovų ir
greitinio režimo transporto darbuose įtaką garso slėgio lygiui
atskiruose garso lauko taškuose. Didžiausią triukšmą į aplinką
skleidžia stovintis traktorius MTZ-80UK. Didžiausią triukšmą
važiuodamas skleidžia „B1”, jo garso lygis yra 86,2 dBA, 3,1 dBA
garso lygio padidėjimą važiuojant sukelia transmisijos mechanizmų
triukšmas. „Tyliausia transmisija“ yra „C” traktoriaus. Jo garso
lygis važiuojant padidėja tik 1,5 dBA, „D” traktoriaus transmisija
tai pat yra gana tyli, nes važiuojančio traktoriaus garso lygis
padidėja 2,5 dBA. „B1” ir „B2” traktorių transmisijos yra
triukšmingiausios. Jų sukeliamo triukšmo lygis tolygus variklio
triukšmui – veikiant transmisijai, triukšmas aplinkoje padidėja 3,1
dBA. Traktoriui dirbant nenusistovėjusiame režime – triukšmo lygis
kinta 8 – 10 dBA ribose.
The aim of this investigation was to
estimate tractor’s workload and accelerating schedule influence on
traffic works to sound pressure level in different sound area
points. Investigations made by Council Directive 74/151/EEC on the
approximation of the laws of the Member States relating to certain
parts and characteristics of wheeled agricultural or forestry
tractors. The noisiest was MTZ-80 UK, noise level of stationary
tractor was 94 dBA. The lowest noise of transmission is tractor’s
“C”. Tractor‘s sound level in motion was raised by 1,5 dBA. Second
was tractor “D” it’s transmission work raised noise level by 2,5
dBA. “B1” “B2” tractors transmission noise level raised by 3,1 dBA.
When tractor working at alternating mode, noise level varies by 8
-10 dBA.
Advisors/Committee Members: Deikus, Juvencijus (Master’s thesis supervisor), Merkevičius, Stanislovas (Master’s thesis reviewer), Giedra, Kazimieras (Master’s thesis reviewer).
Subjects/Keywords: Traktorius; Triukšmo
lygis; Vidaus degimo
variklis; Įsibėgėjimas; Tractor; Noise level; Internal-combustion
engine; Engine racing
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Sprindžiūnas,
Gintaras. (2009). Aplinkos akustinės taršos tyrimas dirbant
traktoriui nenusistovėjusiame režime. (Masters Thesis). Lithuanian University of Agriculture. Retrieved from http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20090114_154815-40333 ;
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Chicago Manual of Style (16th Edition):
Sprindžiūnas,
Gintaras. “Aplinkos akustinės taršos tyrimas dirbant
traktoriui nenusistovėjusiame režime.” 2009. Masters Thesis, Lithuanian University of Agriculture. Accessed March 06, 2021.
http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20090114_154815-40333 ;.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
MLA Handbook (7th Edition):
Sprindžiūnas,
Gintaras. “Aplinkos akustinės taršos tyrimas dirbant
traktoriui nenusistovėjusiame režime.” 2009. Web. 06 Mar 2021.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Vancouver:
Sprindžiūnas,
Gintaras. Aplinkos akustinės taršos tyrimas dirbant
traktoriui nenusistovėjusiame režime. [Internet] [Masters thesis]. Lithuanian University of Agriculture; 2009. [cited 2021 Mar 06].
Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20090114_154815-40333 ;.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Council of Science Editors:
Sprindžiūnas,
Gintaras. Aplinkos akustinės taršos tyrimas dirbant
traktoriui nenusistovėjusiame režime. [Masters Thesis]. Lithuanian University of Agriculture; 2009. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20090114_154815-40333 ;
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Delft University of Technology
8.
Bosklopper, J.J. (author).
Experimental and simulation-based investigation of the performance of a 100 % methanol port-injected spark-ignited engine.
Degree: 2020, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:946dbdf6-ea99-4f57-8441-5a012e704d37
► The maritime sector faces major challenges with increasing regulations from the International Maritime Organization (IMO) and national regulations for CO2, SOx and NOx. Innovative fuel…
(more)
▼ The maritime sector faces major challenges with increasing regulations from the International Maritime Organization (IMO) and national regulations for CO2, SOx and NOx. Innovative fuel types for maritime use are now under development by various stakeholders. Methanol shows considerable potential as one of the most promising for implementation in the short to medium term, based on the potential availability, emission reduction, and energy density. The Green maritime methanol (GMM) project is Netherlands based collaboration of important stakeholders such as shipbuilders, engine manufacturers and universities. Within this project, methanol is researched as a potential alternative combustion fuel for maritime vessels. For this purpose, the ”Dutch Caterpillar engine dealer” PON Power provided a G3508A engine available as a retrofit option. The engine is a turbocharged spark-ignited natural gas (NG) engine with 8 cylinders and a rated power of 500 kWe at 1500 rpm. After six months of rebuilding the engine, the spark-ignited (SI), port fuel injected (PFI) engine runs on 100% methanol. Tests with stable engine operation were achieved with 100% methanol at 25%, 50%, and 75% engine loading and a constant engine speed of 1500 rpm. In this research, experiments and modelling have been performed to study combustion using 100% PFI methanol. Measurements are realized with varying: ignition timings, NOx emission settings, and manifold temperatures. Data collected during these measurements such as in-cylinder pressures, emissions, and temperatures, provided a comparison between running the engine on methanol or natural gas. In this comparison combustion stability is determined with the coefficient of variation (COV) of Pmax and of imep, optimum ignition timing is determined and engine efficiency is calculated and compared to NG. Modelling is accomplished with a TU Delft model of the G3508A SI engine adjusted for the use of 100% methanol as a fuel. A modified sub-model for the PFI and vaporization of methanol has been developed. These engine data will be used to validate the methanol engine model and to optimise the engine performance for further experimental runs and better understanding the use of methanol as a fuel. The effect on the performance and the combustion when 100% methanol is used as fuel for a SI PFI engine compared to premixed injection of natural gas is shown in this work. The engine operates stably on methanol at 50% and 75% load within ignition timings of 16-24 °CA BTDC, but less stable than with NG. Heat release indicates an almost similar combustion duration, but shorter combustion duration is shown for methanol. Also with methanol, the crank angle where 50% of fuel is burnt (CA50) is shown earlier compared to NG. The faster premixed combustion, combined with a better found fuel consumption operating point, resulted in higher efficiencies for methanol compared to NG for the tested 50% and 75% load at comparable operating conditions.
Green Maritime Methanol Project
Advisors/Committee Members: Visser, K. (mentor), Roekaerts, D.J.E.M. (mentor), van de Ketterij, RG (graduation committee), Sapra, H.D. (graduation committee), Delft University of Technology (degree granting institution).
Subjects/Keywords: Methanol; Port fuel injected; spark-ignited; Internal combustion engine; experiments; simulation; Natural gas engine
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APA (6th Edition):
Bosklopper, J. J. (. (2020). Experimental and simulation-based investigation of the performance of a 100 % methanol port-injected spark-ignited engine. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:946dbdf6-ea99-4f57-8441-5a012e704d37
Chicago Manual of Style (16th Edition):
Bosklopper, J J (author). “Experimental and simulation-based investigation of the performance of a 100 % methanol port-injected spark-ignited engine.” 2020. Masters Thesis, Delft University of Technology. Accessed March 06, 2021.
http://resolver.tudelft.nl/uuid:946dbdf6-ea99-4f57-8441-5a012e704d37.
MLA Handbook (7th Edition):
Bosklopper, J J (author). “Experimental and simulation-based investigation of the performance of a 100 % methanol port-injected spark-ignited engine.” 2020. Web. 06 Mar 2021.
Vancouver:
Bosklopper JJ(. Experimental and simulation-based investigation of the performance of a 100 % methanol port-injected spark-ignited engine. [Internet] [Masters thesis]. Delft University of Technology; 2020. [cited 2021 Mar 06].
Available from: http://resolver.tudelft.nl/uuid:946dbdf6-ea99-4f57-8441-5a012e704d37.
Council of Science Editors:
Bosklopper JJ(. Experimental and simulation-based investigation of the performance of a 100 % methanol port-injected spark-ignited engine. [Masters Thesis]. Delft University of Technology; 2020. Available from: http://resolver.tudelft.nl/uuid:946dbdf6-ea99-4f57-8441-5a012e704d37
9.
Catacchio, Gabriele.
Design of battery pack and internal combustion engine
thermal models for hybrid electric vehicles.
Degree: MA, Mechanical, Automotive, and Materials
Engineering, 2013, National Library of Canada
URL: http://scholar.uwindsor.ca/etd/4964
► This thesis focuses on the design of computational models, capable of simulating the thermal behaviour of a battery pack and internal combustion engine equipping…
(more)
▼ This thesis focuses on the design of
computational models, capable of simulating the thermal behaviour
of a battery pack and
internal combustion engine equipping a hybrid
electric vehicle tested over a given driving cycle. Both the models
manage a lot of input variables and take into account all the
thermophysical aspects regulating the heat exchange phenomena
between the battery and
engine devices and the cooling medium used
to maintain their thermal control. The main objective of the
research is to design the two models and integrate them in the
simulation tool used by Chrysler to predict the performance of
hybrid vehicles in the early design stages. After that, using the
battery cooling system model, a sensitivity study is performed to
understand which are the most important factor affecting the
thermal behaviour of the battery cells. Finally, a validation phase
is conducted for both the software to guarantee the validity of
their results.
Advisors/Committee Members: Kar, Narayan, Frise, Peter.
Subjects/Keywords: Applied sciences; Battery; Design; Hybrid vehicle; Internal combustion engine; Simulation
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Catacchio, G. (2013). Design of battery pack and internal combustion engine
thermal models for hybrid electric vehicles. (Masters Thesis). National Library of Canada. Retrieved from http://scholar.uwindsor.ca/etd/4964
Chicago Manual of Style (16th Edition):
Catacchio, Gabriele. “Design of battery pack and internal combustion engine
thermal models for hybrid electric vehicles.” 2013. Masters Thesis, National Library of Canada. Accessed March 06, 2021.
http://scholar.uwindsor.ca/etd/4964.
MLA Handbook (7th Edition):
Catacchio, Gabriele. “Design of battery pack and internal combustion engine
thermal models for hybrid electric vehicles.” 2013. Web. 06 Mar 2021.
Vancouver:
Catacchio G. Design of battery pack and internal combustion engine
thermal models for hybrid electric vehicles. [Internet] [Masters thesis]. National Library of Canada; 2013. [cited 2021 Mar 06].
Available from: http://scholar.uwindsor.ca/etd/4964.
Council of Science Editors:
Catacchio G. Design of battery pack and internal combustion engine
thermal models for hybrid electric vehicles. [Masters Thesis]. National Library of Canada; 2013. Available from: http://scholar.uwindsor.ca/etd/4964

Brigham Young University
10.
Jessup, Eric Ashton.
BYU Diesel Engine Lab Setup and Parasitic Losses of the Water Pump and Vacuum Pump on a Cummins 2.8L Engine.
Degree: MS, 2020, Brigham Young University
URL: https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=9446&context=etd
► The need to minimize carbon dioxide (CO2) emissions is becoming increasingly important with the total number of vehicles throughout the world exceeding one billion.…
(more)
▼ The need to minimize carbon dioxide (CO2) emissions is becoming increasingly important with the total number of vehicles throughout the world exceeding one billion. Carbon dioxide emissions can be reduced by improving vehicle fuel efficiency. While electric transportation is gaining popularity, most passenger vehicles are still powered by gasoline or diesel engines. The main objective of this work was to provide opportunities for studying and improving the fuel efficiency of internal combustion engines (ICE). This was achieved by 1) Designing, building and testing auxiliary systems necessary to run a Cummins 2.8 L engine in a an engine test cell; 2) Creating educational labs for the ICE class; and 3) Measuring the parasitic losses of the vacuum pump and water pump on the installed Cummins 2.8 L diesel engine. All auxiliary systems were completed at a hardware cost of $8100 and are rated to support an engine with the power output capacity of 233 kW (312 hp). The educational laboratories enable future engineers to measure and assess the efficiency of internal combustions engines. The parasitic losses of the vacuum pump and water pump were found to impact the relative brake fuel conversion efficiency by 1.3% and 1.5% respectively over the Federal Test Procedure (FTP) cycle.
Subjects/Keywords: Parasitic Losses; Water Pump; Vacuum Pump; Internal Combustion Engine (ICE); Engineering
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Jessup, E. A. (2020). BYU Diesel Engine Lab Setup and Parasitic Losses of the Water Pump and Vacuum Pump on a Cummins 2.8L Engine. (Masters Thesis). Brigham Young University. Retrieved from https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=9446&context=etd
Chicago Manual of Style (16th Edition):
Jessup, Eric Ashton. “BYU Diesel Engine Lab Setup and Parasitic Losses of the Water Pump and Vacuum Pump on a Cummins 2.8L Engine.” 2020. Masters Thesis, Brigham Young University. Accessed March 06, 2021.
https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=9446&context=etd.
MLA Handbook (7th Edition):
Jessup, Eric Ashton. “BYU Diesel Engine Lab Setup and Parasitic Losses of the Water Pump and Vacuum Pump on a Cummins 2.8L Engine.” 2020. Web. 06 Mar 2021.
Vancouver:
Jessup EA. BYU Diesel Engine Lab Setup and Parasitic Losses of the Water Pump and Vacuum Pump on a Cummins 2.8L Engine. [Internet] [Masters thesis]. Brigham Young University; 2020. [cited 2021 Mar 06].
Available from: https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=9446&context=etd.
Council of Science Editors:
Jessup EA. BYU Diesel Engine Lab Setup and Parasitic Losses of the Water Pump and Vacuum Pump on a Cummins 2.8L Engine. [Masters Thesis]. Brigham Young University; 2020. Available from: https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=9446&context=etd

Halmstad University
11.
Erling, Fredrik.
Static CFD analysis of a novel valve design for internal combustion engines.
Degree: Computer and Electrical Engineering (IDE), 2011, Halmstad University
URL: http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-15521
► In this work CFD was used to simulate the flow through a novel valve design for internal combustion engines. CFD is numerical method for…
(more)
▼ In this work CFD was used to simulate the flow through a novel valve design for internal combustion engines. CFD is numerical method for simulating the behaviour of systems involving flow processes. A FEM was used for solving the equations.
Literature on the topic was studied to gain an understanding of the performance limiters on the Internal combustion engine. This understanding was used to set up models that better would mimic physical phenomena compared to previous studies. The models gave plausible results as to fluid velocities and in-cylinder flow patterns.
Comsol Multiphysics 4.1 was used for the computations.
Subjects/Keywords: CFD; valve; Internal Combustion Engine; Numerical analysis; Numerisk analys
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APA ·
Chicago ·
MLA ·
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Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Erling, F. (2011). Static CFD analysis of a novel valve design for internal combustion engines. (Thesis). Halmstad University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-15521
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Erling, Fredrik. “Static CFD analysis of a novel valve design for internal combustion engines.” 2011. Thesis, Halmstad University. Accessed March 06, 2021.
http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-15521.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Erling, Fredrik. “Static CFD analysis of a novel valve design for internal combustion engines.” 2011. Web. 06 Mar 2021.
Vancouver:
Erling F. Static CFD analysis of a novel valve design for internal combustion engines. [Internet] [Thesis]. Halmstad University; 2011. [cited 2021 Mar 06].
Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-15521.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Erling F. Static CFD analysis of a novel valve design for internal combustion engines. [Thesis]. Halmstad University; 2011. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-15521
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Delft University of Technology
12.
Reurings, Jeroen (author).
A modeling study to investigate performance of SOFC-ICE hybrid systems for marine applications.
Degree: 2019, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:7ff207b4-e7a8-4104-896a-91b27ceff34d
► Emissions restrictions imposed by the International Maritime Organization (IMO) is forcing ship owners and builders to look into alternative fuels and prime movers. The high…
(more)
▼ Emissions restrictions imposed by the International Maritime Organization (IMO) is forcing ship owners and builders to look into alternative fuels and prime movers. The high efficiency of fuel cells could help to decrease emissions in marine power generation. Solid oxide fuel cells (SOFCs) are the most fuel flexible among fuel cells, the high operating temperature and the possibilities for direct
internal reforming (DIR)makes this technology of great interest for natural gas fueled systems. SOFCs operating in hybrid system configuration could even achieve higher efficiencies, due to effective utilization of left-over fuel in anode off-gas and adequate system heat integration. In literature extensive research is found about hybridization of SOFCs and gas turbines. For such hybrid configurations high efficiencies are projected, however poor part load performance and high system complexity are tempering the interest for marine applications. SOFC integration with an
internal combustion engine (ICE) also has high projected efficiencies and is expected to enable system integration in marine applications with limited complexity, higher robustness, and lower costs compared to SOFC-gas turbine integration. However, due to the novelty of SOFC-ICE hybrid systems, not much research has been published as of yet and the research that is found shows a variety in system configurations and performance results. This observation justifies additional SOFC-ICE hybrid system research, particularly if the system has to operate on marine applications. In this work an integration of an SOFC and ICE is proposed. Both SOFC and ICE share the load on the system: the SOFC can operate on a base load, while the ICE can handle majority of the transient load. A pre-reformer is proposed, which supplies partially reformed methane to the SOFC. The ICE is supplied with natural gas mixed with excess fuel from the SOFC-anode. This additional natural gas supply to the
engine makes it a combined cycle, instead of a bottoming cycle, and allows better dynamic load control and increases reliability. Also system heat integration is an essential requirement, as the steam required for methane pre-reforming is produced with heat from
engine exhaust system. System component models are developed and individually analysed. Thereafter both component models are combined to an SOFC-ICE hybrid system model and a study is conducted to investigate the sensitivity of the following operating parameters and system configurations on system performance and efficiency: SOFC current density, SOFC fuel utilization, anode off-gas recycling, methane pre-reforming ratio, pre-reformer integration, and power split ratio. The SOFC component model provides insights of performance behaviour when varying operating parameters. The ICE model clearly indicates the advantages when hydrogen is added to natural gas, both improved
engine efficiency and improved
combustion stability are demonstrated. Finally, it is found that operating the hybrid system model consisting of a 375 kWe (AC) SOFC and a…
Advisors/Committee Members: Purushothaman Vellayani, Aravind (mentor), Stam, Jelle (mentor), Delft University of Technology (degree granting institution).
Subjects/Keywords: SOFC; ICE; Hybrid system; Internal combustion engine; Marine power plant
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Reurings, J. (. (2019). A modeling study to investigate performance of SOFC-ICE hybrid systems for marine applications. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:7ff207b4-e7a8-4104-896a-91b27ceff34d
Chicago Manual of Style (16th Edition):
Reurings, Jeroen (author). “A modeling study to investigate performance of SOFC-ICE hybrid systems for marine applications.” 2019. Masters Thesis, Delft University of Technology. Accessed March 06, 2021.
http://resolver.tudelft.nl/uuid:7ff207b4-e7a8-4104-896a-91b27ceff34d.
MLA Handbook (7th Edition):
Reurings, Jeroen (author). “A modeling study to investigate performance of SOFC-ICE hybrid systems for marine applications.” 2019. Web. 06 Mar 2021.
Vancouver:
Reurings J(. A modeling study to investigate performance of SOFC-ICE hybrid systems for marine applications. [Internet] [Masters thesis]. Delft University of Technology; 2019. [cited 2021 Mar 06].
Available from: http://resolver.tudelft.nl/uuid:7ff207b4-e7a8-4104-896a-91b27ceff34d.
Council of Science Editors:
Reurings J(. A modeling study to investigate performance of SOFC-ICE hybrid systems for marine applications. [Masters Thesis]. Delft University of Technology; 2019. Available from: http://resolver.tudelft.nl/uuid:7ff207b4-e7a8-4104-896a-91b27ceff34d

University of Lund
13.
Fridriksson, Helgi.
Combustion Bowl Heat Transfer Analysis in Diesel and PPC
Engines.
Degree: 2013, University of Lund
URL: https://lup.lub.lu.se/record/4172962
;
https://portal.research.lu.se/ws/files/5417586/4172963.pdf
► This thesis concerns a numerical investigation on heat transfer in internal combustion engines, with the aim of increasing engine efficiency. The efficiency gains are to…
(more)
▼ This thesis concerns a numerical investigation on
heat transfer in internal combustion engines, with the aim of
increasing engine efficiency. The efficiency gains are to be
extracted from reduced heat transfer losses, by increasing the
knowledge on how the heat transfer process is affected by various
hardware and operational parameters in the engine. The engines
concerned are both conventional diesel engines and engines operated
in partially premixed combustion mode. In the thesis, heat transfer
results for these two engine modes are compared and discussed. In
addition, evaluation of the engine performance and emissions is
done in order to confirm that reduced heat losses contribute to
increased efficiency. The numerical investigation is based upon
three-dimensional computational fluid dynamics simulations using
RANS based models, where transport equations for turbulent reacting
flows inside the engine cylinder are solved. The engine is
represented by an engine segment model, where a single spray
enclosure for the closed volume part of the cycle is simulated.
This provides information on the compression, combustion and
expansion part of the cycle, where the interaction between
combustion and heat transfer are studied for the two combustion
modes. The results showed that heat transfer can be affected by
both operational and geometrical parameters, while the results for
emission values differed between the engine concepts. Changing the
piston geometry in the engine lead to changes in the engine
flow-field and, thereby, the amount of heat transfered from the
engine cylinder. Another efficient tool for affecting engine heat
transfer was the manipulation of the injection strategy. A study
showed that with a favorable injection strategy, the
high-temperature in-cylinder gases could be stratified so the
engine walls would be sheltered from the high-temperature gases.
This lead to a reduced temperature gradient in the near-wall region
and reduced heat transfer. Other parameters that had an effect on
engine heat transfer were inlet pressure and temperature values.
These were optimized for optimal trade-off between engine heat
transfer, engine performance and emission levels. Comparing the
conventional diesel combustion concept and the partially premixed
combustion concept, while moving towards adiabatic conditions,
revealed that even though engine performance was improved for both
combustion concepts, emission levels were quite different. Lower
temperature during combustion in the PPC mode resulted in a more
modest increase in emission levels, while conditions were moved
towards adiabatic wall conditions.
Subjects/Keywords: Energy Engineering; Heat Transfer; CFD; Internal Combustion Engine; Diesel; PPC
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Fridriksson, H. (2013). Combustion Bowl Heat Transfer Analysis in Diesel and PPC
Engines. (Doctoral Dissertation). University of Lund. Retrieved from https://lup.lub.lu.se/record/4172962 ; https://portal.research.lu.se/ws/files/5417586/4172963.pdf
Chicago Manual of Style (16th Edition):
Fridriksson, Helgi. “Combustion Bowl Heat Transfer Analysis in Diesel and PPC
Engines.” 2013. Doctoral Dissertation, University of Lund. Accessed March 06, 2021.
https://lup.lub.lu.se/record/4172962 ; https://portal.research.lu.se/ws/files/5417586/4172963.pdf.
MLA Handbook (7th Edition):
Fridriksson, Helgi. “Combustion Bowl Heat Transfer Analysis in Diesel and PPC
Engines.” 2013. Web. 06 Mar 2021.
Vancouver:
Fridriksson H. Combustion Bowl Heat Transfer Analysis in Diesel and PPC
Engines. [Internet] [Doctoral dissertation]. University of Lund; 2013. [cited 2021 Mar 06].
Available from: https://lup.lub.lu.se/record/4172962 ; https://portal.research.lu.se/ws/files/5417586/4172963.pdf.
Council of Science Editors:
Fridriksson H. Combustion Bowl Heat Transfer Analysis in Diesel and PPC
Engines. [Doctoral Dissertation]. University of Lund; 2013. Available from: https://lup.lub.lu.se/record/4172962 ; https://portal.research.lu.se/ws/files/5417586/4172963.pdf

University of Ontario Institute of Technology
14.
Ezzat, Muhammad.
Conceptual development and analysis of sustainable powering options for hybrid vehicles.
Degree: 2018, University of Ontario Institute of Technology
URL: http://hdl.handle.net/10155/910
► Hydrogen and ammonia are the carbon-free fuels that have the potential to replace the fossil fuels in the near future. In addition, they can also…
(more)
▼ Hydrogen and ammonia are the carbon-free fuels that have the potential to replace the fossil fuels in the near future. In addition, they can also act as energy carriers and storage media for many applications; particularly in the transportation sector, which contributes around 25% of the global greenhouse gas (GHG) emissions, and a substantial reduction to this share will undoubtedly achieve better environmental conditions. In this thesis, six novel integrated systems for powering vehicles are conceptually developed and introduced.All the system are thermodynamically modeled by applying energetic and exergetic approaches via the Engineering Equation Solver software (EES). The obtained results are validated by using energy and exergy analyses and available data from the literature. Moreover, exergoeconomic analysis has been carried out for the proposed systems. The Genetic Algorithm is utilized to optimize the introduced systems to achieve the optimum performance with the least possible cost for each system.
For the same power output of 118 kW, the overall energy and exergy efficiencies of system 1, which comprises Li-ion battery, PEMFC system and PV panels are found to be 45.9% and 46.4% at a fuel cell current density of 1150 mA/cm2 respectively. The energy and exergy efficiencies of system 2, which comprises Li-ion battery, PEMFC system, PV panels and AEC unit are found to be 47.5% and 47.4% at a fuel cell current density of 1150 mA/cm2 respectively. The overall energy efficiencies of systems 3, which comprises ammonia-hydrogen ICE and ammonia dissociation separation unit (ADSU) and system 4, which comprises ammonia-hydrogen ICE, ADSU and PEMFC system are obtained as 31% and 38.6% respectively. The overall exergy efficiencies of systems 3 and 4 are found to be 28.8% and 36.2% respectively. The overall energy and exergy efficiencies of system 5, which consists of ammonia-hydrogen ICE, thermoelectric generators (TEG) and AEC unit are found to be 31.1% and 28.9% respectively. The overall energy and exergy efficiency of system 6, which consists of Li-ion battery, gas turbine, TEG, organic Rankine cycle (ORC) and absorption chiller are found to be 32.3% and 29.2% respectively.
Advisors/Committee Members: Dincer, Ibrahim.
Subjects/Keywords: Hybrid vehicles; Hydrogen; Ammonia; Fuel cell; Internal combustion engine
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Ezzat, M. (2018). Conceptual development and analysis of sustainable powering options for hybrid vehicles. (Thesis). University of Ontario Institute of Technology. Retrieved from http://hdl.handle.net/10155/910
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Ezzat, Muhammad. “Conceptual development and analysis of sustainable powering options for hybrid vehicles.” 2018. Thesis, University of Ontario Institute of Technology. Accessed March 06, 2021.
http://hdl.handle.net/10155/910.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Ezzat, Muhammad. “Conceptual development and analysis of sustainable powering options for hybrid vehicles.” 2018. Web. 06 Mar 2021.
Vancouver:
Ezzat M. Conceptual development and analysis of sustainable powering options for hybrid vehicles. [Internet] [Thesis]. University of Ontario Institute of Technology; 2018. [cited 2021 Mar 06].
Available from: http://hdl.handle.net/10155/910.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Ezzat M. Conceptual development and analysis of sustainable powering options for hybrid vehicles. [Thesis]. University of Ontario Institute of Technology; 2018. Available from: http://hdl.handle.net/10155/910
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Loughborough University
15.
Baker, Christopher E.
The effect of transient dynamics of the internal combustion compression ring upon its tribological performance.
Degree: PhD, 2014, Loughborough University
URL: http://hdl.handle.net/2134/14068
► The losses in an internal combustion engine are dominated by thermal and parasitic sources. The latter arises from mechanical inefficiencies inherent within the system, particularly…
(more)
▼ The losses in an internal combustion engine are dominated by thermal and parasitic sources. The latter arises from mechanical inefficiencies inherent within the system, particularly friction in load bearing conjunctions such as the piston assembly. During idle and at low engine speeds, frictional losses are the major contributor to the overall engine losses as opposed to the dominant contribution of thermal losses under other driving conditions. Given the relatively small size and simple structure of the top compression ring, it has a disproportionate contribution to the total frictional losses. This suggests further analysis would be required to understand the underlying causes of compression ring behaviour throughout the engine cycle. The available literature on tribological analyses of compression rings does not account for the transient ring elastodynamics. They usually assume a rigid ring for film thickness and power loss predictions, which is not representative of the ring's dynamic response. A combined study of ring elastodynamic behaviour and its tribological conjunction is a comprehensive approach.
Subjects/Keywords: 621.43; Internal combustion engine; Compression ring; Elastodynamics; Transient tribology
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Baker, C. E. (2014). The effect of transient dynamics of the internal combustion compression ring upon its tribological performance. (Doctoral Dissertation). Loughborough University. Retrieved from http://hdl.handle.net/2134/14068
Chicago Manual of Style (16th Edition):
Baker, Christopher E. “The effect of transient dynamics of the internal combustion compression ring upon its tribological performance.” 2014. Doctoral Dissertation, Loughborough University. Accessed March 06, 2021.
http://hdl.handle.net/2134/14068.
MLA Handbook (7th Edition):
Baker, Christopher E. “The effect of transient dynamics of the internal combustion compression ring upon its tribological performance.” 2014. Web. 06 Mar 2021.
Vancouver:
Baker CE. The effect of transient dynamics of the internal combustion compression ring upon its tribological performance. [Internet] [Doctoral dissertation]. Loughborough University; 2014. [cited 2021 Mar 06].
Available from: http://hdl.handle.net/2134/14068.
Council of Science Editors:
Baker CE. The effect of transient dynamics of the internal combustion compression ring upon its tribological performance. [Doctoral Dissertation]. Loughborough University; 2014. Available from: http://hdl.handle.net/2134/14068

University of Michigan
16.
Henrion, Lucca.
Characterizing Infrared Molecular Radiation in a Flat-Flame Burner and an Optical Spark-Ignition Engine.
Degree: PhD, Mechanical Engineering, 2020, University of Michigan
URL: http://hdl.handle.net/2027.42/163146
► There is a common assumption that radiative heat loss is negligible in spark-ignition (SI) engines. Total radiation consists of soot particle and molecular gas radiation.…
(more)
▼ There is a common assumption that radiative heat loss is negligible in spark-ignition (SI) engines. Total radiation consists of soot particle and molecular gas radiation. Soot radiation is often seen in rich flames, where small clumps of carbon particles emit in a broadband fashion primarily in visible wavelengths. Molecular radiation, consisting in large part of H2O and CO2, occurs due to reactant and product gases of
combustion at high temperatures, and these molecules radiate in specific infrared wavelength bands corresponding to discrete energy levels. Recent interest has led researchers to re-evaluate the influence of molecular radiation as a source of
engine heat loss. Researchers created a simulation technique that demonstrated the relative importance of molecular radiation as an emitter of energy, but also molecular influence in absorbing energy throughout the
engine cylinder. However, these simulations lacked experimental measurements for validation.
To address the lack of experimental data, a methodology was developed to measure the wall reaching radiation in a spectrally and temporally resolved way. This work demonstrates broadband emission spectroscopy in an atmospheric flat-flame burner and the first crank-angle-resolved broadband emission spectroscopy performed in the near- and mid-wavelength infrared (IR) in a well-characterized, spark-ignited, optical, research
engine. Flat-flame measurements were performed at a variety of equivalence ratios and nitrogen dilutions.
Engine measurements were made at twelve conditions to characterize the impacts of equivalence ratio, nitrogen dilution, and carbon dioxide dilution on radiative heat transfer. The presented studies provide information to understand the magnitude, lifetime, and variation of molecular radiation at a series of
combustion conditions at atmospheric and
engine-relevant pressures and temperatures.
These experimental measurements were used to validate and improve predictive models of intra- and trans-cylinder radiation in
combustion systems. Strong agreement between the measured and simulated spectra exists for the atmospheric-pressure flat-flame burner, and strong agreement from 2.4-3.5 µm was seen for stoichiometric
engine combustion at 1300 rev/min. Cycle-to-cycle variability of radiation in the measurements is evaluated as it corresponds to the measured pressure and
combustion landmarks.
Engine measurements showed that CO2 is strongly self-absorbed, and the impacts of radiative absorption on local condition changes are discussed. The experimental trends are evaluated and discussed in the context of their implications on
engine behavior. Finally, these results show the potential for the development of a diagnostic through experimental measurements.
Advisors/Committee Members: Sick, Volker (committee member), Manera, Annalisa (committee member), Gross, Michael (committee member), Johnsen, Eric (committee member).
Subjects/Keywords: Molecular Radiation; Internal Combustion Engine; Infrared Diagnostics; Mechanical Engineering; Engineering
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Henrion, L. (2020). Characterizing Infrared Molecular Radiation in a Flat-Flame Burner and an Optical Spark-Ignition Engine. (Doctoral Dissertation). University of Michigan. Retrieved from http://hdl.handle.net/2027.42/163146
Chicago Manual of Style (16th Edition):
Henrion, Lucca. “Characterizing Infrared Molecular Radiation in a Flat-Flame Burner and an Optical Spark-Ignition Engine.” 2020. Doctoral Dissertation, University of Michigan. Accessed March 06, 2021.
http://hdl.handle.net/2027.42/163146.
MLA Handbook (7th Edition):
Henrion, Lucca. “Characterizing Infrared Molecular Radiation in a Flat-Flame Burner and an Optical Spark-Ignition Engine.” 2020. Web. 06 Mar 2021.
Vancouver:
Henrion L. Characterizing Infrared Molecular Radiation in a Flat-Flame Burner and an Optical Spark-Ignition Engine. [Internet] [Doctoral dissertation]. University of Michigan; 2020. [cited 2021 Mar 06].
Available from: http://hdl.handle.net/2027.42/163146.
Council of Science Editors:
Henrion L. Characterizing Infrared Molecular Radiation in a Flat-Flame Burner and an Optical Spark-Ignition Engine. [Doctoral Dissertation]. University of Michigan; 2020. Available from: http://hdl.handle.net/2027.42/163146

Michigan Technological University
17.
Arora, Jayant Kumar.
DESIGN OF REAL-TIME COMBUSTION FEEDBACK SYSTEM AND EXPERIMENTAL STUDY OF AN RCCI ENGINE FOR CONTROL.
Degree: MS, Department of Mechanical Engineering-Engineering Mechanics, 2016, Michigan Technological University
URL: https://digitalcommons.mtu.edu/etdr/148
► Premixed compression ignition (PCI) technologies offer high efficiency and low emissions but are usually confined by limited operation range as well as high pressure…
(more)
▼ Premixed compression ignition (PCI) technologies offer high efficiency and low emissions but are usually confined by limited operation range as well as high pressure rise and heat release rate. In this work, a more recently developed PCI mode is explored where in-cylinder blending of two fuels with different auto-ignition characteristics (diesel and gasoline) is utilized to create reactivity stratification such that heat release rate and
combustion timing can be controlled. This mode has been defined as Reactivity Controlled Compression Ignition (RCCI).
As part of this thesis, the main aim is to study various parameters that can be used to control
combustion phasing. Also, steady state mapping of the
engine is done so as to explore the operating range for the current
engine setup. Best efficiencies as well as highest loads are obtained for higher Premixed Ratio (PR) values and advanced Start of Injection (SOI) timings, where as lower PR fuel blends are needed to achieve low load limit. The analysis is also extended to transient RCCI operation for observing various dynamics involved and their effects on
combustion phasing. As part of realizing full-load range operation, switching to conventional Spark-Ignition (SI)
combustion mode is also carried out. Various dynamics involved in the switching process are captured.
A cycle-by-cycle closed loop
combustion controller is designed and implemented on the
engine to achieve optimum
combustion phasing during transient
engine operation. To provide feedback of
combustion parameters like
engine load and
combustion phasing to the closed loop controller, a real-time
combustion feedback system is designed and implemented utilizing Field Programmable Gate Array (FPGA).
Advisors/Committee Members: Mahdi Shahbakhti.
Subjects/Keywords: Low temperature combustion; FPGA; Internal combustion engine; RCCI; combustion phasing control; Automotive Engineering; Heat Transfer, Combustion
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Arora, J. K. (2016). DESIGN OF REAL-TIME COMBUSTION FEEDBACK SYSTEM AND EXPERIMENTAL STUDY OF AN RCCI ENGINE FOR CONTROL. (Masters Thesis). Michigan Technological University. Retrieved from https://digitalcommons.mtu.edu/etdr/148
Chicago Manual of Style (16th Edition):
Arora, Jayant Kumar. “DESIGN OF REAL-TIME COMBUSTION FEEDBACK SYSTEM AND EXPERIMENTAL STUDY OF AN RCCI ENGINE FOR CONTROL.” 2016. Masters Thesis, Michigan Technological University. Accessed March 06, 2021.
https://digitalcommons.mtu.edu/etdr/148.
MLA Handbook (7th Edition):
Arora, Jayant Kumar. “DESIGN OF REAL-TIME COMBUSTION FEEDBACK SYSTEM AND EXPERIMENTAL STUDY OF AN RCCI ENGINE FOR CONTROL.” 2016. Web. 06 Mar 2021.
Vancouver:
Arora JK. DESIGN OF REAL-TIME COMBUSTION FEEDBACK SYSTEM AND EXPERIMENTAL STUDY OF AN RCCI ENGINE FOR CONTROL. [Internet] [Masters thesis]. Michigan Technological University; 2016. [cited 2021 Mar 06].
Available from: https://digitalcommons.mtu.edu/etdr/148.
Council of Science Editors:
Arora JK. DESIGN OF REAL-TIME COMBUSTION FEEDBACK SYSTEM AND EXPERIMENTAL STUDY OF AN RCCI ENGINE FOR CONTROL. [Masters Thesis]. Michigan Technological University; 2016. Available from: https://digitalcommons.mtu.edu/etdr/148

Universidade Estadual de Campinas
18.
Martelli, André Luiz, 1985-.
Desenvolvimento de algoritmos de balanceamento da potência de cilindros de motores estacionários a gás natural com base na retroalimentação da pressão medida nos cilindros: Development of cylinder balancing strategies for large bore natural gas engines based on cylinder pressure feedback.
Degree: 2018, Universidade Estadual de Campinas
URL: http://repositorio.unicamp.br/jspui/handle/REPOSIP/333616
► Abstract: Large-bore engines running on natural gas and equipped with individual injection valves for each cylinder require balancing strategies to account for the intrinsic variations…
(more)
▼ Abstract: Large-bore engines running on natural gas and equipped with individual injection valves for each cylinder require balancing strategies to account for the intrinsic variations induced by component¿s fabrication and wear, and overall
engine geometry effects. Several methods are disclosed in the literature, some based on exhaust temperature equalization, adaptive balancing from knocking
combustion detection or even aiming at the equalization of cylinder pressure derived parameters. This last category encompasses the core of this thesis, exploring different strategies of closed loop cylinder balancing considering cylinder pressure analysis feedback. Target
combustion metrics are defined and tested on a 20-cylinder ("V" configuration)
engine rated at 8.5 MW electrical power and
subject to variable operating conditions (most notably in terms of charge air temperature and fuel gas quality fluctuation). Results indicate a convergence of the main balancing methods tested (maximum pressure, knock intensity and center of
combustion) towards an increase of average knock intensity KP beyond 3.5 bar in the 20 cylinders. With KP below 3.0 bar, greater dispersion of parameters is observed for the KP balancing strategy, overloading some cylinders and suggesting that an additional feature is required, such as peak pressure limitation by mass fuel injection correction. It was not possible to correlate trends in emissions or fuel consumption and balancing methods, though O 2 and NO x were remarkably different among cylinder banks in the "V" arrangement. It was also demonstrated that the main benefit of a well-balanced
engine is the possibility of a power increase above the originally rated level and associated effects, which were manly an improvement in 0.5% efficiency and 20% lower NOx emissions for a power level of 9.0 MW electric
Advisors/Committee Members: UNIVERSIDADE ESTADUAL DE CAMPINAS (CRUESP), Sanchez, Caio Glauco, 1955- (advisor), Universidade Estadual de Campinas. Faculdade de Engenharia Mecânica (institution), Programa de Pós-Graduação em Engenharia Mecânica (nameofprogram), Gallo, Waldyr Luiz Ribeiro (committee member), Ferreira, Janito Vaqueiro (committee member), Lacava, Pedro Teixeira (committee member), Scalon, Vicente Luiz (committee member).
Subjects/Keywords: Motores de combustão interna; Sistemas de controle por realimentação; Motores - Combustão - Termodinâmica; Internal combustion engine; Feedback control system; Engine - Combustion - Thermodynamics
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Martelli, André Luiz, 1. (2018). Desenvolvimento de algoritmos de balanceamento da potência de cilindros de motores estacionários a gás natural com base na retroalimentação da pressão medida nos cilindros: Development of cylinder balancing strategies for large bore natural gas engines based on cylinder pressure feedback. (Thesis). Universidade Estadual de Campinas. Retrieved from http://repositorio.unicamp.br/jspui/handle/REPOSIP/333616
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Martelli, André Luiz, 1985-. “Desenvolvimento de algoritmos de balanceamento da potência de cilindros de motores estacionários a gás natural com base na retroalimentação da pressão medida nos cilindros: Development of cylinder balancing strategies for large bore natural gas engines based on cylinder pressure feedback.” 2018. Thesis, Universidade Estadual de Campinas. Accessed March 06, 2021.
http://repositorio.unicamp.br/jspui/handle/REPOSIP/333616.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Martelli, André Luiz, 1985-. “Desenvolvimento de algoritmos de balanceamento da potência de cilindros de motores estacionários a gás natural com base na retroalimentação da pressão medida nos cilindros: Development of cylinder balancing strategies for large bore natural gas engines based on cylinder pressure feedback.” 2018. Web. 06 Mar 2021.
Vancouver:
Martelli, André Luiz 1. Desenvolvimento de algoritmos de balanceamento da potência de cilindros de motores estacionários a gás natural com base na retroalimentação da pressão medida nos cilindros: Development of cylinder balancing strategies for large bore natural gas engines based on cylinder pressure feedback. [Internet] [Thesis]. Universidade Estadual de Campinas; 2018. [cited 2021 Mar 06].
Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/333616.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Martelli, André Luiz 1. Desenvolvimento de algoritmos de balanceamento da potência de cilindros de motores estacionários a gás natural com base na retroalimentação da pressão medida nos cilindros: Development of cylinder balancing strategies for large bore natural gas engines based on cylinder pressure feedback. [Thesis]. Universidade Estadual de Campinas; 2018. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/333616
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
19.
Broekaert, Stijn.
A study of the heat transfer in low temperature combustion engines.
Degree: 2018, Ghent University
URL: http://hdl.handle.net/1854/LU-8547486
► In this work, an experimental study was performed of the heat transfer in low temperature combustion engines. The heat transfer was measured in two single-cylinder…
(more)
▼ In this work, an experimental study was performed of the heat transfer in low temperature
combustion engines. The heat transfer was measured in two single-cylinder engines: a Waukesha CFR
engine at Ghent University and a Scania D13
engine at Lund University. The CFR
engine was operated in HCCI mode and the Scania
engine in both HCCI and PPC mode. A statistical analysis was performed on the effect of the
engine settings on the maximum heat flux and the total heat loss during the cycle for motored, HCCI and PPC operation of both engines. An evaluation of multiple existing heat transfer models demonstrated that these models are not suitable for predicting the instantaneous heat flux during HCCI and PPC operation. For this reason, a new heat transfer model was developed for low temperature
combustion engines. A comparison with the existing heat transfer models showed that the heat transfer model is better able to predict the instantaneous heat flux, the maximum heat flux and the total heat loss.
Advisors/Committee Members: Verhelst, Sebastian, De Paepe, Michel.
Subjects/Keywords: Technology and Engineering; Heat transfer; Low temperature combustion; Homogeneous charge compression ignition; Partially Premixed Combustion; Internal combustion engine; Experimental
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Broekaert, S. (2018). A study of the heat transfer in low temperature combustion engines. (Thesis). Ghent University. Retrieved from http://hdl.handle.net/1854/LU-8547486
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Broekaert, Stijn. “A study of the heat transfer in low temperature combustion engines.” 2018. Thesis, Ghent University. Accessed March 06, 2021.
http://hdl.handle.net/1854/LU-8547486.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Broekaert, Stijn. “A study of the heat transfer in low temperature combustion engines.” 2018. Web. 06 Mar 2021.
Vancouver:
Broekaert S. A study of the heat transfer in low temperature combustion engines. [Internet] [Thesis]. Ghent University; 2018. [cited 2021 Mar 06].
Available from: http://hdl.handle.net/1854/LU-8547486.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Broekaert S. A study of the heat transfer in low temperature combustion engines. [Thesis]. Ghent University; 2018. Available from: http://hdl.handle.net/1854/LU-8547486
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Lund
20.
Dahlström, Jessica.
Experimental Investigations of Combustion Chamber Heat
Transfer in a Light-Duty Diesel Engine.
Degree: 2016, University of Lund
URL: https://lup.lub.lu.se/record/9adf550d-7efa-4a70-b41c-99f913047dbd
;
https://portal.research.lu.se/ws/files/7644748/Experimental_investigations_of_combustion_chamber_heat_transfer_in_a_light_duty_diesel_engine.pdf
► This work concerned experimental studies of heat transfer in a light-duty diesel engine. Combustion is affected by several parameters, such as pressure, engine speed, mass…
(more)
▼ This work concerned experimental studies of heat
transfer in a light-duty diesel engine. Combustion is affected by
several parameters, such as pressure, engine speed, mass of
injected fuel and in-cylinder gas flow. These parameters are in
turn affected by the combustion chamber geometry and fuel spray
characteristics. At high load the exhaust heat was increased more
than at high engine speed. Swirl was found to speed up the
combustion event and increased heat loss to the piston cooling, but
had no measurable effect on exhaust heat loss. Exhaust gas
recirculation (EGR) diverts part of the exhaust gas and mixes it
with intake air. The recirculated gas acts as a heat sink and
reduces in-cylinder temperatures and thus, heat losses. The
air-fuel ratio is another important factor. More air resulted in
faster combustion while also increasing exhaust gas temperature.
Altering the combustion chamber geometry affected both in-cylinder
gas flow and mixing. A more open and shallow design was found to
redistribute heat losses from cooling media to exhaust. The
original injectors were proven to have a higher fuel flow than the
two other configurations, but faster combustion and less heat in
the exhaust was mainly found with the injectors with fewest holes.
Hot exhaust gases could be more useful than hot cooling media,
because that heat may be extracted and used to improve engine
efficiency. This reduces fuel consumption, and consequently
emissions of greenhouse gases, which contribute to global warming.
The world energy demand is still increasing, and more natural
resources are being used. Higher efficiency requires less fuel, and
thereby reduces the impact on environment and humanity. The work
was performed in a 4-cylinder light-duty diesel engine.
Temperatures and mass flow measurements were performed in cooling
media and exhaust gas. From these calculations were executed to
find out the heat fractions emitted to each medium. Two combustion
chamber geometries and three injectors were tested and compared
with respect to their impact on combustion and heat
losses.
Subjects/Keywords: Engineering and Technology; internal combustion engines; heat transfer; diesel engine; Diesel combustion; combustion chamber geometry; piston geometry; spray parameters
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Dahlström, J. (2016). Experimental Investigations of Combustion Chamber Heat
Transfer in a Light-Duty Diesel Engine. (Doctoral Dissertation). University of Lund. Retrieved from https://lup.lub.lu.se/record/9adf550d-7efa-4a70-b41c-99f913047dbd ; https://portal.research.lu.se/ws/files/7644748/Experimental_investigations_of_combustion_chamber_heat_transfer_in_a_light_duty_diesel_engine.pdf
Chicago Manual of Style (16th Edition):
Dahlström, Jessica. “Experimental Investigations of Combustion Chamber Heat
Transfer in a Light-Duty Diesel Engine.” 2016. Doctoral Dissertation, University of Lund. Accessed March 06, 2021.
https://lup.lub.lu.se/record/9adf550d-7efa-4a70-b41c-99f913047dbd ; https://portal.research.lu.se/ws/files/7644748/Experimental_investigations_of_combustion_chamber_heat_transfer_in_a_light_duty_diesel_engine.pdf.
MLA Handbook (7th Edition):
Dahlström, Jessica. “Experimental Investigations of Combustion Chamber Heat
Transfer in a Light-Duty Diesel Engine.” 2016. Web. 06 Mar 2021.
Vancouver:
Dahlström J. Experimental Investigations of Combustion Chamber Heat
Transfer in a Light-Duty Diesel Engine. [Internet] [Doctoral dissertation]. University of Lund; 2016. [cited 2021 Mar 06].
Available from: https://lup.lub.lu.se/record/9adf550d-7efa-4a70-b41c-99f913047dbd ; https://portal.research.lu.se/ws/files/7644748/Experimental_investigations_of_combustion_chamber_heat_transfer_in_a_light_duty_diesel_engine.pdf.
Council of Science Editors:
Dahlström J. Experimental Investigations of Combustion Chamber Heat
Transfer in a Light-Duty Diesel Engine. [Doctoral Dissertation]. University of Lund; 2016. Available from: https://lup.lub.lu.se/record/9adf550d-7efa-4a70-b41c-99f913047dbd ; https://portal.research.lu.se/ws/files/7644748/Experimental_investigations_of_combustion_chamber_heat_transfer_in_a_light_duty_diesel_engine.pdf

Indian Institute of Science
21.
Sehemby, Amardeep A Singh.
Development Of An Advanced Methodology For Automotive IC Engine Design Optimization Using A Multi-Physics CAE Approach.
Degree: MSc Engg, Faculty of Engineering, 2016, Indian Institute of Science
URL: http://etd.iisc.ac.in/handle/2005/2565
► The internal combustion engine is synonyms with the automobile since its invention in late 19th century. The internal combustion engine today is far more advanced…
(more)
▼ The
internal combustion engine is synonyms with the automobile since its invention in late 19th century. The
internal combustion engine today is far more advanced and efficient compared to its early predecessors. An intense competition exists today amongst the automotive OEMs in various countries and regions for stepping up sales and increasing market share. The pressure on automotive OEMs to reduce fuel consumption and emission is enormous which has lead to innovations of many variations in
engine and
engine-related technologies. However, IC engines are in existence for well more than a century and hence have already evolved to a highly refined state. Changes in IC
engine are therefore largely incremental in nature. A deterrent towards development of an
engine configuration that is significantly different from its predecessor is the phenomenal cost involved in prototyping. Thus, the only viable alternative in exploring new
engine concepts and even optimizing designs currently in operation is through extensive use of CAE.
In light of published work in the field of analysis of IC engines, current research effort is directed towards development of a rational methodology for arriving at a weight-optimized
engine design, which simultaneously meets performance of various attributes such as thermal, durability, vehicle dynamics and NVH. This is in contrast to the current methodology adopted in industry, according to which separate teams work on aspects of
engine design such as
combustion, NVH (Noise, Vibration and Harshness), acoustics, dynamics, heat transfer and durability. Because of the involvement of heterogeneous product development groups, optimization of an
engine for weight, which can have a significant impact on its power-to-weight ratio, becomes a slow process beset with manual interventions and compromise solutions. Thus, following the traditional approach, it is quite difficult to claim that an unambiguous weight-optimized design has been achieved. As a departure from the practiced approach, the present research effort is directed at the deployment of a single multi-physics explicit analysis solver, viz. LS-DYNA - generally known for its contact-impact analysis capabilities, for simultaneously evaluating a given
engine design for heat transfer, mechanical and thermal loading, and vibration. It may be mentioned that only
combustion analysis is carried out in an uncoupled manner, using proven phenomenological thermodynamic relations, to initially arrive at mechanical and thermal loading/boundary conditions for the coupled thermo-mechanical analysis. The proposed methodology can thus be termed as a semi-integrated technique and its efficacy is established with the case study of designing a single cylinder air-cooled diesel
engine from scratch and its optimization.
Advisors/Committee Members: Deb, Anindya (advisor).
Subjects/Keywords: Internal Combustion Engine; Computer Aided Engineering (CAE); Single Cylinder Diesel Engines; Automotive Internal Combustion Engines; Automotive IC Engine; Engines - Development; Internal Combustion Engines - Coupled Thermo-Mechanical Analysis; Internal Combustion Engines - Computer Aided Engineering Analysis; Heat Engineering
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Sehemby, A. A. S. (2016). Development Of An Advanced Methodology For Automotive IC Engine Design Optimization Using A Multi-Physics CAE Approach. (Masters Thesis). Indian Institute of Science. Retrieved from http://etd.iisc.ac.in/handle/2005/2565
Chicago Manual of Style (16th Edition):
Sehemby, Amardeep A Singh. “Development Of An Advanced Methodology For Automotive IC Engine Design Optimization Using A Multi-Physics CAE Approach.” 2016. Masters Thesis, Indian Institute of Science. Accessed March 06, 2021.
http://etd.iisc.ac.in/handle/2005/2565.
MLA Handbook (7th Edition):
Sehemby, Amardeep A Singh. “Development Of An Advanced Methodology For Automotive IC Engine Design Optimization Using A Multi-Physics CAE Approach.” 2016. Web. 06 Mar 2021.
Vancouver:
Sehemby AAS. Development Of An Advanced Methodology For Automotive IC Engine Design Optimization Using A Multi-Physics CAE Approach. [Internet] [Masters thesis]. Indian Institute of Science; 2016. [cited 2021 Mar 06].
Available from: http://etd.iisc.ac.in/handle/2005/2565.
Council of Science Editors:
Sehemby AAS. Development Of An Advanced Methodology For Automotive IC Engine Design Optimization Using A Multi-Physics CAE Approach. [Masters Thesis]. Indian Institute of Science; 2016. Available from: http://etd.iisc.ac.in/handle/2005/2565

NSYSU
22.
Chung, Huai-Sheng.
Design of Conjugate Cam Mechanisms for Internal Combustion Engines.
Degree: Master, Mechanical and Electro-Mechanical Engineering, 2012, NSYSU
URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0104112-200809
► Due to the kinematic limitation of slider-crank mechanisms used in traditional internal combustion engines, such devices driven by their piston motions have a difficulty to…
(more)
▼ Due to the kinematic limitation of slider-crank mechanisms used in traditional
internal combustion engines, such devices driven by their piston motions have a difficulty to reach the better fuel efficiency. In order to make the fuel efficiency better, many
engine mechanisms that can be tuned to obtain desired piston motions have been proposed. Since most of the proposed
engine mechanisms have complex linkages and bulky size, they become impractical for real applications. The design of a conjugate cam
engine mechanism containing a conjugate cam with a slider crank mechanism can be conveniently tuned to produce a desired piston motion in consideration of a limited space, weight, and the number of linkages.
The aim of this research is to set up a systematic design and analysis procedure for conjugate cam
engine mechanisms. First of all, the kinematic analysis of conjugate cam
engine mechanisms is performed based on the rigid body transformation method to determinate the conjugate cam profiles. Then, the geometric properties including the pressure angle and radius of curvature are investigated. Also, in order to characterize the rigid body dynamic behavior of the mechanism, the Newtonâs Law is used to derive equations of motion. Finally, it is conducted to design and analyze a real system, and observe the real condition from the experiment to prove the theory is correct.
Advisors/Committee Members: Guan-Shyong Hwang (chair), Jao-Hwa Kuang (chair), Der-Min Tsay (committee member), Bor-Jeng Lin (chair), Kuang-Yuh Huang (chair).
Subjects/Keywords: internal combustion engine conjugate cam mechanism; slider-crank mechanism; rigid body transformation; piston motion
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Chung, H. (2012). Design of Conjugate Cam Mechanisms for Internal Combustion Engines. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0104112-200809
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Chung, Huai-Sheng. “Design of Conjugate Cam Mechanisms for Internal Combustion Engines.” 2012. Thesis, NSYSU. Accessed March 06, 2021.
http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0104112-200809.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Chung, Huai-Sheng. “Design of Conjugate Cam Mechanisms for Internal Combustion Engines.” 2012. Web. 06 Mar 2021.
Vancouver:
Chung H. Design of Conjugate Cam Mechanisms for Internal Combustion Engines. [Internet] [Thesis]. NSYSU; 2012. [cited 2021 Mar 06].
Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0104112-200809.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Chung H. Design of Conjugate Cam Mechanisms for Internal Combustion Engines. [Thesis]. NSYSU; 2012. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0104112-200809
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universidade do Rio Grande do Sul
23.
Haical, Rafael da Cruz.
Desenvolvimento de um sistema de controle de dinamômetro para testes de motores de combustão interna.
Degree: 2009, Universidade do Rio Grande do Sul
URL: http://hdl.handle.net/10183/17626
► Este trabalho aborda o desenvolvimento de um sistema de controle em malha fechada de torque e velocidade de rotação para testes de motores de combustão…
(more)
▼ Este trabalho aborda o desenvolvimento de um sistema de controle em malha fechada de torque e velocidade de rotação para testes de motores de combustão interna em uma bancada que possui um dinamômetro de correntes de Foucault. É apresentada uma revisão bibliográfica que abrange a fundamentação teórica básica sobre dinamômetro, alguns dos principais testes realizados em motores de combustão interna e técnicas de controle e instrumentação que estão sendo desenvolvidas por pesquisadores sobre o tema de controle de dinamômetro para testes de motores de combustão interna. O projeto surgiu com a necessidade do Laboratório de Motores da UFRGS realizar vários testes em motores a combustão tendo uma maior confiabilidade e rapidez para aquisição dos resultados. Este sistema está baseado num microcontrolador da família Atmega onde foram implementados os algoritmos de um controlador PID e um proporcional, que controlam respectivamente, os níveis de corrente contínua aplicadas no dinamômetro e o percentual de abertura da borboleta do motor combustão através de um motor de passo. A etapa de controle é executada no microcontrolador e uma interface gráfica foi implementada em Labview. Esta interface gráfica faz a leitura via porta serial dos dados do microcontrolador e traça suas curvas as salvando em arquivo, também se pode visualizar os sinais das temperaturas do motor e dinamômetro e nível de combustível do reservatório. A validação do controle desenvolvido foi comprovada através da verificação da convergência dos sinais para os valores de referência desejados. O controle propiciou também uma diminuição dos tempos para obtenção das respostas desejadas em comparação com o sistema anterior de controle manual.
This paper describes the development of a torque and rotation speed closed loop control system for internal combustion engine tests in a bench using a Foucault current dynamometer. A bibliographical review that encompasses basic dynamometer theoretical concepts, some of the most important tests applied to internal combustion engines, and control and instrumentation techniques currently under development on dynamometer testing for internal combustion engines is presented. This project needs to perform tests in combustion engines which would produce more dependable and faster results. The system herein developed is based on an Atmega-type microcontroller where algorithms of both a PID and a proportion controller, controlling respectively the levels of direct current applied through the dynamometer coils and the opening of an internal combustion engine throttle body by means of a step motor, were implemented. The control stage was done in the microcontroller and a graphic interface for a personal computer was created in Labview. This graphic interface facilitates the microcontroller data reading and traces its curves, saving them in a file; also, the engine and dynamometer temperature signals and the tank fuel level can be visualized. The validation of this control has been proved by the signal convergence check for desired…
Advisors/Committee Members: Perondi, Eduardo André.
Subjects/Keywords: Dynamometer; Motor de combustão interna; Dinamômetro; Speed control; Torque control; Instrumentation; Internal combustion engine
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Haical, R. d. C. (2009). Desenvolvimento de um sistema de controle de dinamômetro para testes de motores de combustão interna. (Thesis). Universidade do Rio Grande do Sul. Retrieved from http://hdl.handle.net/10183/17626
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Haical, Rafael da Cruz. “Desenvolvimento de um sistema de controle de dinamômetro para testes de motores de combustão interna.” 2009. Thesis, Universidade do Rio Grande do Sul. Accessed March 06, 2021.
http://hdl.handle.net/10183/17626.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Haical, Rafael da Cruz. “Desenvolvimento de um sistema de controle de dinamômetro para testes de motores de combustão interna.” 2009. Web. 06 Mar 2021.
Vancouver:
Haical RdC. Desenvolvimento de um sistema de controle de dinamômetro para testes de motores de combustão interna. [Internet] [Thesis]. Universidade do Rio Grande do Sul; 2009. [cited 2021 Mar 06].
Available from: http://hdl.handle.net/10183/17626.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Haical RdC. Desenvolvimento de um sistema de controle de dinamômetro para testes de motores de combustão interna. [Thesis]. Universidade do Rio Grande do Sul; 2009. Available from: http://hdl.handle.net/10183/17626
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Michigan
24.
Hoffman, Deanna Marie Winton.
In-line internal combustion engine dynamics and vibration.
Degree: PhD, Mechanical engineering, 1999, University of Michigan
URL: http://hdl.handle.net/2027.42/132154
► This thesis describes a combined experimental and modeling study focused on piston-driven internal combustion (IC) engine dynamics and vibration. IC engines are a primary vibration…
(more)
▼ This thesis describes a combined experimental and modeling study focused on piston-driven
internal combustion (IC)
engine dynamics and vibration. IC engines are a primary vibration source in all types of vehicles. Excessive vibration adversely impacts vehicle durability, customer perceptions of quality, and vehicle operator readiness. Here, a unique time-domain model is developed for predicting IC
engine dynamics and vibration from the type of parametric data commonly available during preliminary design. The experimental work is based on time-resolved force measurements made at the mount locations of an in-line heavy-duty Diesel
engine having six cylinders and a nominal rating of 470 horsepower. Data was collected from the quiescent
engine via impact testing to determine its rigid-body modal response, and from the operating
engine to determine the vibration loads transmitted through the
engine mounts. Projection of the running
engine data onto the measured
engine modes showed that more than 80% of the
engine's vibration output from 0 to 200 Hz could be described by rigid body motions. Thus, the modeling work is based on rigid-body dynamics and has led to an analytical simulation of
engine dynamics and vibrations having seven degrees of freedom that account for the three-dimensional motion of the
engine block, crankshaft, pistons, and connecting rods. Realistic component-to-component variations, and static and dynamic crankshaft imbalances may be specified. This model is unique in the open literature and comprises the major contribution of this thesis. Unlike previous models, no assumptions nor restrictions are made on the coupling between the fully-nonlinear dynamics of the
engine's
internal components and the linearized vibratory motions of the
engine block. Comparisons of this new model to standard modeling approaches are presented and show that the fully-coupled approach is required for poorly balanced or strongly vibrating engines. Model-to-experiment comparisons show acceptable agreement with overall correlations between 50 and 70%. Model-to-experiment differences exist because of non-modeled flexible motions of the experimental
engine, unknown experimental parametric imperfections, and the contributions of unmodeled
engine components to the experimental measurements.
Advisors/Committee Members: Dowling, David R. (advisor).
Subjects/Keywords: Dynamics; Internal Combustion Engine; Line; Vibration
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Hoffman, D. M. W. (1999). In-line internal combustion engine dynamics and vibration. (Doctoral Dissertation). University of Michigan. Retrieved from http://hdl.handle.net/2027.42/132154
Chicago Manual of Style (16th Edition):
Hoffman, Deanna Marie Winton. “In-line internal combustion engine dynamics and vibration.” 1999. Doctoral Dissertation, University of Michigan. Accessed March 06, 2021.
http://hdl.handle.net/2027.42/132154.
MLA Handbook (7th Edition):
Hoffman, Deanna Marie Winton. “In-line internal combustion engine dynamics and vibration.” 1999. Web. 06 Mar 2021.
Vancouver:
Hoffman DMW. In-line internal combustion engine dynamics and vibration. [Internet] [Doctoral dissertation]. University of Michigan; 1999. [cited 2021 Mar 06].
Available from: http://hdl.handle.net/2027.42/132154.
Council of Science Editors:
Hoffman DMW. In-line internal combustion engine dynamics and vibration. [Doctoral Dissertation]. University of Michigan; 1999. Available from: http://hdl.handle.net/2027.42/132154

University of Michigan
25.
Tibavinsky, Ivan.
Thermal Emission of Strontium Products for Scalar Diagnostics in Internal Combustion Engines.
Degree: PhD, Mechanical Engineering, 2019, University of Michigan
URL: http://hdl.handle.net/2027.42/153368
► Developments in optical diagnostics for combustion systems have been essential to the recent improvements in efficiency and abatement of emissions that internal combustion engines have…
(more)
▼ Developments in optical diagnostics for
combustion systems have been essential to the
recent improvements in efficiency and abatement of emissions that
internal combustion engines
have undergone recently. Great emphasis has been placed in the measurement of quantities with
high temporal and spatial resolution, which has enabled the understanding of key physical and
chemical processes, but there remains a need for obtaining spatially integrated measurements to
understand how local events affect the overall behavior of the gases in a turbulent
combustion
chamber. Strontium offers a potential avenue to provide these measurements. When present in
combustion it produces strontium monohydroxide, which spontaneously emits radiation in
several bands of the visible spectrum, and thus enables the determination of temperature
independently of species concentration through the Boltzmann distribution. Further, chemical
equilibrium calculations can relate equivalence ratio to the relative concentration strontium and
strontium monohydroxide, which could also be measured optically.
The potential of this technique was explored in this work. An optical
engine was operated
under different conditions with a strontium-containing fuel and spectral measurements of the
radiation emitted from the chamber were performed. The temperature in the cylinder was
predicted by a one-dimensional thermodynamic model that used a two-zone model for flame
propagation. The relative spectrally resolved emission intensity of atomic strontium and
strontium monohydroxide was measured using a spectrometer coupled with camera, and the
collected signals were related to the conditions in the chamber. From the results the
mathematical formulation for the relationship of spectral intensity with temperature was found to
be adequate, and important insights for the application of the diagnostic in imaging experiments
were obtained. A universally applicable calibration was not attained due to experimental
limitations, however, but the key barriers to overcome were identified.
Advisors/Committee Members: Sick, Volker (committee member), Gamba, Mirko (committee member), Boehman, Andre L (committee member), Sangi Reddy, Pramod (committee member).
Subjects/Keywords: Engine optical diagnostics; Strontium spectral emission; strontium monohydroxide; internal combustion engines; Mechanical Engineering; Engineering
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Tibavinsky, I. (2019). Thermal Emission of Strontium Products for Scalar Diagnostics in Internal Combustion Engines. (Doctoral Dissertation). University of Michigan. Retrieved from http://hdl.handle.net/2027.42/153368
Chicago Manual of Style (16th Edition):
Tibavinsky, Ivan. “Thermal Emission of Strontium Products for Scalar Diagnostics in Internal Combustion Engines.” 2019. Doctoral Dissertation, University of Michigan. Accessed March 06, 2021.
http://hdl.handle.net/2027.42/153368.
MLA Handbook (7th Edition):
Tibavinsky, Ivan. “Thermal Emission of Strontium Products for Scalar Diagnostics in Internal Combustion Engines.” 2019. Web. 06 Mar 2021.
Vancouver:
Tibavinsky I. Thermal Emission of Strontium Products for Scalar Diagnostics in Internal Combustion Engines. [Internet] [Doctoral dissertation]. University of Michigan; 2019. [cited 2021 Mar 06].
Available from: http://hdl.handle.net/2027.42/153368.
Council of Science Editors:
Tibavinsky I. Thermal Emission of Strontium Products for Scalar Diagnostics in Internal Combustion Engines. [Doctoral Dissertation]. University of Michigan; 2019. Available from: http://hdl.handle.net/2027.42/153368

Anna University
26.
SEENI KANNAN P.
MODELING AND ANALYSIS OF VARIABLE GEOMETRY EXHAUST
MANIFOLD SYSTEM TO IMPROVE TRANSIENT ENGINE OPERATION OF A LOW
SPEED DIESEL ENGINE;.
Degree: Mechanical engineering, 2008, Anna University
URL: http://shodhganga.inflibnet.ac.in/handle/10603/17510
► The aim of this research work is to verify the engine transient newlinesimulation of a multicylinder diesel engine with improved overall newlineperformance. Simulation of internal…
(more)
▼ The aim of this research work is to verify the
engine transient newlinesimulation of a multicylinder diesel engine
with improved overall newlineperformance. Simulation of internal
combustion engine has become very newlineimportant in recent days
due to the availability of increasing computer power newlineand
computer simulation software. A modern computer simulation model is
newlineused to compare overall efficiency and volumetric efficiency
with newlineinstantaneous values. A baseline engine model is first
correlated with newlinemeasured efficiency data to establish
confidence in the engine model s newlinepredictions. A derivative
of the baseline model, complete with a newly newlinedeveloped
exhaust manifold, is then subjected to a transient excursion
newlinesimulating typical, in-service, maximum rates of engine
speed change. The newlineexhaust manifold system in the
multicylinder diesel engine contributes for the newlinebetter
breathing of the engine and optimum engine cylinder charging.
newlineInstantaneous volumetric efficiency, calculated over
discrete engine cycles newlineforming the sequence, is then
compared with its steady speed counterpart at newlinethe
corresponding speed. The computer simulation model is used to
newlinedemonstrate the optimized design and performance of the
baseline engine. newlineThe research work provides a good example
of the application of computer newlinesimulation techniques in
providing answers to real engineering questions newlinemainly on
the flow characteristic phenomena of the manifold flow pipes
newlineunder transient engine conditions. The objective of modified
geometry newlineexhaust manifold is to identify the maximum
possible flow through the newlineexhaust pipes and to find the
optimal flow rates across the pipe junctions. newlineThe developed
design of Y shaped exhaust manifold improves newlinetransient
performance of a four cylinder diesel engine and from the study it
is newlineobserved that the torque during a load transient
evolution is directly newlinecontrolled by the air mass flow rate
and load transient tests at different engine newlinespeed are
performed with dissimilar manifolds. Design and newlineoperational
variables of inlet and exhaust system
Advisors/Committee Members: PERIASAMY V M.
Subjects/Keywords: baseline model; exhaust system; inlet; internal combustion engine; multicylinder; multicylinder; transient simulation; variables; volumetric efficiency
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
P, S. K. (2008). MODELING AND ANALYSIS OF VARIABLE GEOMETRY EXHAUST
MANIFOLD SYSTEM TO IMPROVE TRANSIENT ENGINE OPERATION OF A LOW
SPEED DIESEL ENGINE;. (Thesis). Anna University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/17510
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
P, SEENI KANNAN. “MODELING AND ANALYSIS OF VARIABLE GEOMETRY EXHAUST
MANIFOLD SYSTEM TO IMPROVE TRANSIENT ENGINE OPERATION OF A LOW
SPEED DIESEL ENGINE;.” 2008. Thesis, Anna University. Accessed March 06, 2021.
http://shodhganga.inflibnet.ac.in/handle/10603/17510.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
P, SEENI KANNAN. “MODELING AND ANALYSIS OF VARIABLE GEOMETRY EXHAUST
MANIFOLD SYSTEM TO IMPROVE TRANSIENT ENGINE OPERATION OF A LOW
SPEED DIESEL ENGINE;.” 2008. Web. 06 Mar 2021.
Vancouver:
P SK. MODELING AND ANALYSIS OF VARIABLE GEOMETRY EXHAUST
MANIFOLD SYSTEM TO IMPROVE TRANSIENT ENGINE OPERATION OF A LOW
SPEED DIESEL ENGINE;. [Internet] [Thesis]. Anna University; 2008. [cited 2021 Mar 06].
Available from: http://shodhganga.inflibnet.ac.in/handle/10603/17510.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
P SK. MODELING AND ANALYSIS OF VARIABLE GEOMETRY EXHAUST
MANIFOLD SYSTEM TO IMPROVE TRANSIENT ENGINE OPERATION OF A LOW
SPEED DIESEL ENGINE;. [Thesis]. Anna University; 2008. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/17510
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Penn State University
27.
Liu, Kai.
Large-Eddy Simulation of in-cylinder flows
in motored reciprocating-piston internal combustion engines.
Degree: 2012, Penn State University
URL: https://submit-etda.libraries.psu.edu/catalog/15825
► Two key bottlenecks prevent engines from reaching their performance, efficiency, and emissions potential. The first bottleneck is limited understanding of turbulence hydrodynamics for in-cylinder flows…
(more)
▼ Two key bottlenecks prevent engines from reaching their performance,
efficiency, and emissions potential. The first bottleneck is limited understanding of
turbulence hydrodynamics for in-cylinder flows including
cycle-to-cycle variations (CCV), and the second one is the absence of an objective approach
for making quantitative comparisons between simulation and experiment,
beyond ensemble averaging.
In this thesis, the CCV phenomenon in IC engines and its effects on IC-
engine performance
are introduced. Previous studies of CCV, its root causes, and its influences on
engine performance
are reviewed. The limitations of current practices for IC
engine simulation and analysis are discussed.
Large-eddy simulation (LES) has shown
promise in
internal combustion (IC)
engine applications, and proper
orthogonal decomposition (POD) has been proposed as an objective way to
analyze complex turbulent flows and to make comprehensive comparisons
between simulation and measurements.
In the research performed here, LES and POD have been performed
for two simplified motored IC engines: the Imperial College piston-cylinder assembly
with and without swirl and the Transparent
Combustion Chamber (TCC)
engine.
For the first configuration, the sensitivity of LES to key
numerical and physical model parameters has been investigated.
Results are especially sensitive to mesh and to the subfilter-scale
(SFS) turbulence models. Satisfactory results can be obtained using
simple viscosity-based SFS turbulence models, although there is room
for improvement. No single model gives uniformly best agreement
between model and measurements at all spatial locations and at all times.
Compared to Reynolds-averaged Navier-Stokes (RANS) modeling,
LES shows advantages in accuracy and in capturing more details of the
complex in-cylinder flow dynamics. In particular, LES is able to capture CCV using
computational meshes that are comparable to those that are used for RANS,
in that case, the high computational cost of LES is mainly due to the need to compute
multiple
engine cycles.
POD is then used to study the dynamics of the in-cylinder
turbulent flow. Systematic parametric studies are performed, including
two-dimensional (2-D) POD versus three-dimensional (3-D) POD, phase-dependent
POD versus phase-invariant POD, and sensitivities of POD mode structure and mode
convergence rate to spatial and temporal resolution. The use of POD to
identify and quantify CCV is explored, and the ability of POD to
distinguish between organized and disorganized flows is demonstrated.
The LES and POD experience from the piston-cylinder assembly
is then extended to a more realistic
engine configuration (TCC
engine)
with full four-stroke motored cycles, where detailed particle image
velocimetry (PIV) measurements are being made.
The complex in-cylinder flows, including characterization of CCV,
are analyzed by using LES and POD. Initial quantitative comparisons
with PIV measurements are also performed.
It is found that many of the key conclusions that were drawn from the
POD analysis of…
Advisors/Committee Members: Daniel Connell Haworth, Dissertation Advisor/Co-Advisor, Daniel Connell Haworth, Committee Chair/Co-Chair, Andre Louis Boehman, Committee Member, James Gordon Brasseur, Committee Member, Stephen R Turns, Committee Member.
Subjects/Keywords: Turbulence; � Large-eddy simulation; � Internal Combustion engine; Proper orthogonal decomposition; � Cycle-to-cycle variations
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Liu, K. (2012). Large-Eddy Simulation of in-cylinder flows
in motored reciprocating-piston internal combustion engines. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/15825
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Liu, Kai. “Large-Eddy Simulation of in-cylinder flows
in motored reciprocating-piston internal combustion engines.” 2012. Thesis, Penn State University. Accessed March 06, 2021.
https://submit-etda.libraries.psu.edu/catalog/15825.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Liu, Kai. “Large-Eddy Simulation of in-cylinder flows
in motored reciprocating-piston internal combustion engines.” 2012. Web. 06 Mar 2021.
Vancouver:
Liu K. Large-Eddy Simulation of in-cylinder flows
in motored reciprocating-piston internal combustion engines. [Internet] [Thesis]. Penn State University; 2012. [cited 2021 Mar 06].
Available from: https://submit-etda.libraries.psu.edu/catalog/15825.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Liu K. Large-Eddy Simulation of in-cylinder flows
in motored reciprocating-piston internal combustion engines. [Thesis]. Penn State University; 2012. Available from: https://submit-etda.libraries.psu.edu/catalog/15825
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Pontifical Catholic University of Rio de Janeiro
28.
RENATO NUNES TEIXEIRA.
[en] INTERNAL COMBUSTION ENGINES WITH VARIABLE COMPRESSION
RATIO: A THEORETICAL AND EXPERIMENTAL ANALYSIS.
Degree: 2012, Pontifical Catholic University of Rio de Janeiro
URL: http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=19099
► [pt] É realizado um estudo teórico experimental sobre motores a combustão interna operando com taxa de compressão variável. É feita uma análise teórica sobre determinado…
(more)
▼ [pt] É realizado um estudo teórico experimental sobre
motores a combustão interna operando com taxa de compressão
variável. É feita uma análise teórica sobre determinado mecanismo
que permite variar a taxa de compressão. Para tal foi utilizado um
programa de simulação para motores com ignição por centelha. No
presente trabalho o modelo de simulação foi aprimorado, com a
inclusão de previsão de detonação, de emissão de hidrocarbonetos,
do cálculo da potencia de atrito, assim como a inclusão do
dispositivo do mecanismo de taxa de compressão variável, entre
outras alterações. Uma parte experimental foi também realizada,
como o objetivo de validar os resultados do modelo teórico e de
quantificar os benefícios proporcionados pelo mecanismo em questão.
Para tal um motor de pesquisa de combustível – motor CFR – foi
utilizado. Uma comparação dos resultados teóricos e experimentais
obtidos no presente trabalho com os de outros pesquisadores é
também apresentada.
[en] The present work is concerned with a theoretical
and expererimental study of variable compression ratio spark
ignition internal combustion engines. A theoretical analysis of the
engine, operating with a mechanism allows for variable compression
ratio, is carried out. For that a simulation program is utilized.
In the present work the simulation model was updated with the
inclusion of friction, knocking and hidrocarbon emission models,
among other things. An experimental work was also carried out, with
a CFR engine. The objective was a wo-fold to validade the results
of the theoretical model and to assens the benefits of running an
engine with variable compression ratio. A comparison is also made
between the rrsults of the present work and those from other
authors.
Advisors/Committee Members: ALCIR DE FARO ORLANDO.
Subjects/Keywords: [pt] COMPRESSAO; [en] COMPRESSION; [pt] MOTORES DE COMBUSTAO INTERNA; [en] INTERNAL COMBUSTION ENGINE
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
TEIXEIRA, R. N. (2012). [en] INTERNAL COMBUSTION ENGINES WITH VARIABLE COMPRESSION
RATIO: A THEORETICAL AND EXPERIMENTAL ANALYSIS. (Thesis). Pontifical Catholic University of Rio de Janeiro. Retrieved from http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=19099
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
TEIXEIRA, RENATO NUNES. “[en] INTERNAL COMBUSTION ENGINES WITH VARIABLE COMPRESSION
RATIO: A THEORETICAL AND EXPERIMENTAL ANALYSIS.” 2012. Thesis, Pontifical Catholic University of Rio de Janeiro. Accessed March 06, 2021.
http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=19099.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
TEIXEIRA, RENATO NUNES. “[en] INTERNAL COMBUSTION ENGINES WITH VARIABLE COMPRESSION
RATIO: A THEORETICAL AND EXPERIMENTAL ANALYSIS.” 2012. Web. 06 Mar 2021.
Vancouver:
TEIXEIRA RN. [en] INTERNAL COMBUSTION ENGINES WITH VARIABLE COMPRESSION
RATIO: A THEORETICAL AND EXPERIMENTAL ANALYSIS. [Internet] [Thesis]. Pontifical Catholic University of Rio de Janeiro; 2012. [cited 2021 Mar 06].
Available from: http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=19099.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
TEIXEIRA RN. [en] INTERNAL COMBUSTION ENGINES WITH VARIABLE COMPRESSION
RATIO: A THEORETICAL AND EXPERIMENTAL ANALYSIS. [Thesis]. Pontifical Catholic University of Rio de Janeiro; 2012. Available from: http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=19099
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Cranfield University
29.
Materano Blanco, Gilberto Ignacio.
Numerical modelling of pressure rise combustion for reducing emissions of future civil aircraft.
Degree: PhD, 2014, Cranfield University
URL: http://dspace.lib.cranfield.ac.uk/handle/1826/9259
;
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.655973
► This work assesses the feasibility of designing and implementing the wave rotor (WR), the pulse detonation engine (PDE) and the internal combustion wave rotor (ICWR)…
(more)
▼ This work assesses the feasibility of designing and implementing the wave rotor (WR), the pulse detonation engine (PDE) and the internal combustion wave rotor (ICWR) as part of novel Brayton cycles able to reduce emissions of future aircraft. The design and evaluation processes are performed using the simplified analytical solution of the devices as well as 1D-CFD models. A code based on the finite volume method is built to predict the position and dimensions of the slots for the WR and ICWR. The mass and momentum equations are coupled through a modified SIMPLE algorithm to model compressible flow. The code includes a novel tracking technique to ensure the global mass balance. A code based on the method of characteristics is built to predict the profiles of temperature, pressure and velocity at the discharge of the PDE and the effect of the PDEs array when it operates as combustion chamber of gas turbines. The detonation is modelled by using the NASA-CEA code as a subroutine whilst the method of characteristics incorporates a model to capture the throttling and non-throttling conditions obtained at the PDE's open end during the transient process. A medium-sized engine for business jets is selected to perform the evaluation that includes parameters such as specific thrust, specific fuel consumption and efficiency of energy conversion. The ICWR offers the best performance followed by the PDE; both options operate with a low specific fuel consumption and higher specific thrust. The detonation in an ICWR does not require an external source of energy, but the PDE array designed is simple. The WR produced an increase in the turbine performance, but not as high as the other two devices. These results enable the statement that a pressure rise combustion process behaves better than pressure exchangers for this size of gas turbine. Further attention must be given to the NOx emission, since the detonation process is able to cause temperatures above 2000 K while dilution air could be an important source of oxygen.
Subjects/Keywords: 629.134; Wave Rotor; Pulse Detonation Engine; Internal Combustion Wave Rotor; Gas turbine; Performance
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APA ·
Chicago ·
MLA ·
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APA (6th Edition):
Materano Blanco, G. I. (2014). Numerical modelling of pressure rise combustion for reducing emissions of future civil aircraft. (Doctoral Dissertation). Cranfield University. Retrieved from http://dspace.lib.cranfield.ac.uk/handle/1826/9259 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.655973
Chicago Manual of Style (16th Edition):
Materano Blanco, Gilberto Ignacio. “Numerical modelling of pressure rise combustion for reducing emissions of future civil aircraft.” 2014. Doctoral Dissertation, Cranfield University. Accessed March 06, 2021.
http://dspace.lib.cranfield.ac.uk/handle/1826/9259 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.655973.
MLA Handbook (7th Edition):
Materano Blanco, Gilberto Ignacio. “Numerical modelling of pressure rise combustion for reducing emissions of future civil aircraft.” 2014. Web. 06 Mar 2021.
Vancouver:
Materano Blanco GI. Numerical modelling of pressure rise combustion for reducing emissions of future civil aircraft. [Internet] [Doctoral dissertation]. Cranfield University; 2014. [cited 2021 Mar 06].
Available from: http://dspace.lib.cranfield.ac.uk/handle/1826/9259 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.655973.
Council of Science Editors:
Materano Blanco GI. Numerical modelling of pressure rise combustion for reducing emissions of future civil aircraft. [Doctoral Dissertation]. Cranfield University; 2014. Available from: http://dspace.lib.cranfield.ac.uk/handle/1826/9259 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.655973

Universitat Politècnica de València
30.
Kleut, Petar.
Recuperation of the exhaust gases energy using a Brayton cycle machine
.
Degree: 2017, Universitat Politècnica de València
URL: http://hdl.handle.net/10251/76807
► Lately, car manufacturers have been put to a big challenge to reduce the CO2 emission of their entire fleets. Norms of pollutant emissions limit the…
(more)
▼ Lately, car manufacturers have been put to a big challenge to reduce the CO2 emission of their entire fleets. Norms of pollutant emissions limit the ways to achieve the desired CO2 emission goals, as some of the solutions that would lead to lower CO2 emission also lead to higher pollutant emission. Waste Heat Recovery (WHR) could be a good solution to lower the CO2 emission of the
Internal Combustion Engine (ICE) without increasing the pollutant emission. In the present thesis different WHR strategies are analysed and the results suggested it would be interesting to further study the Brayton cycle machine.
Air Brayton Cycle (ABC) represents a way to recover a part of the heat energy of the ICE exhaust gases and transform it into mechanical energy. Recovered mechanical energy would then be returned to the crankshaft of the ICE, thereby reducing the amount of energy that has to be liberated by
combustion of fuel which lowers the fuel consumption and CO2 emission.
The study of ABC started with an analysis of the ideal cycle in order to obtain the theoretical maximum of the system. The study continued with an analysis of the semi ideal cycle where all losses are taken into account only by two efficiency coefficients. This analysis showed that for the diesel
engine efficiency of the ABC is very low because of the low exhaust gas temperature. For the gasoline
engine the cycle could be viable when the ICE is working under steady condition and higher load. These conditions could be fulfilled when the vehicle is driven on the highway.
Detailed analysis was aimed at determining the cycle main losses. They were determined to be: pumping losses, losses caused by heat transfer and mechanical losses. Taking into account these main losses along with other direct and indirect losses it was concluded that the cycle is not viable for the types of the WHR machines that were considered in this study.
In order for the cycle to be viable some other either existing or new machine type should be tested, that would lower the main losses and offer good isentropic and mechanical efficiency for desired conditions.; Últimamente los fabricantes de automóviles se han puesto el gran reto de reducir la emisión de CO2 en la totalidad de sus flotas. Las nuevas normativas para la reducción de las emisiones contaminantes limitan los medios para lograr los objetivos deseados en la emisión de CO2 porque algunas de las soluciones que llevan a la reducción en la emisión de CO2 también dan lugar a un incremento en la emisión de otros contaminantes. La recuperación de calor residual (WHR) podría ser una buena solución para reducir las emisiones de CO2 del motor de combustión interna (ICE) sin poner en peligro la emisión de contaminantes. En la presente Tesis se analizaron diferentes estrategias de WHR y se concluyó que sería interesante estudiar más a fondo la máquina de ciclo Brayton.
El Ciclo Brayton de Aire (ABC) permite recuperar una parte del calor de los gases de escape del ICE y transformar este calor en energía mecánica. La energía mecánica…
Advisors/Committee Members: Dolz Ruiz, Vicente (advisor).
Subjects/Keywords: Waste Heat Recovery;
WHR;
Brayton cycle;
Brayton;
Internal Combustion Engine;
ICE;
recuperation
Record Details
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Share »
Record Details
Similar Records
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Kleut, P. (2017). Recuperation of the exhaust gases energy using a Brayton cycle machine
. (Doctoral Dissertation). Universitat Politècnica de València. Retrieved from http://hdl.handle.net/10251/76807
Chicago Manual of Style (16th Edition):
Kleut, Petar. “Recuperation of the exhaust gases energy using a Brayton cycle machine
.” 2017. Doctoral Dissertation, Universitat Politècnica de València. Accessed March 06, 2021.
http://hdl.handle.net/10251/76807.
MLA Handbook (7th Edition):
Kleut, Petar. “Recuperation of the exhaust gases energy using a Brayton cycle machine
.” 2017. Web. 06 Mar 2021.
Vancouver:
Kleut P. Recuperation of the exhaust gases energy using a Brayton cycle machine
. [Internet] [Doctoral dissertation]. Universitat Politècnica de València; 2017. [cited 2021 Mar 06].
Available from: http://hdl.handle.net/10251/76807.
Council of Science Editors:
Kleut P. Recuperation of the exhaust gases energy using a Brayton cycle machine
. [Doctoral Dissertation]. Universitat Politècnica de València; 2017. Available from: http://hdl.handle.net/10251/76807
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