subject:(Diesel Engines)

Anna University

1. Murugesan A. Experimental and theoretical Investigation of using bio diesel in Diesel engines;.

Degree: Experimental and theoretical Investigation of using bio diesel in Diesel engines, 2015, Anna University

URL: http://shodhganga.inflibnet.ac.in/handle/10603/35505

►

newlineEver increasing consumption of fossil fuel and petroleum products newlinehas been a matter of great concern for India The huge out go of foreign newlineexchange… (more)

Subjects/Keywords: Bio diesel; Diesel engines

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

A, M. (2015). Experimental and theoretical Investigation of using bio diesel in Diesel engines;. (Thesis). Anna University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/35505

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

A, Murugesan. “Experimental and theoretical Investigation of using bio diesel in Diesel engines;.” 2015. Thesis, Anna University. Accessed February 27, 2021. http://shodhganga.inflibnet.ac.in/handle/10603/35505.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

A, Murugesan. “Experimental and theoretical Investigation of using bio diesel in Diesel engines;.” 2015. Web. 27 Feb 2021.

Vancouver:

A M. Experimental and theoretical Investigation of using bio diesel in Diesel engines;. [Internet] [Thesis]. Anna University; 2015. [cited 2021 Feb 27]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/35505.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

A M. Experimental and theoretical Investigation of using bio diesel in Diesel engines;. [Thesis]. Anna University; 2015. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/35505

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Limerick

2. Madden, Orla. Investigation of first generation biofuels in diesel engines.

Degree: 2011, University of Limerick

URL: http://hdl.handle.net/10344/1967

►

peer-reviewed

In an AC1W IDI Lister Petter diesel engine, ignition delay reduced exponentially with an increase in engine speed for hempseed oil (HSO), camelina seed… (more)

▼

peer-reviewed

In an AC1W IDI Lister Petter diesel engine, ignition delay reduced exponentially with an increase in engine speed for hempseed oil (HSO), camelina seed oil (CSO) and rapeseed oil (RSO). The polyunsaturated fuels HSO produced ignition delays which were 0.6 to 12.4%, 18.7 to 32.1% and 10.8 to 26.8% longer than RSO, rapeseed methyl ester (RME) and mineral diesel (MD) fuel respectively whilst CSO produced ignition delays which were 0 to 9.8%, 18.4 to 29.1% and 11.8 to 24.8% longer than RSO, RME and MD fuel respectively. Ignition delays increased with a 5o Crank Angle (CA) advance in fuel injection timing by 2.7 to 19.2%, 0.9 to 11.1% and 0.12 to 17.0% for RSO, CSO and HSO respectively. A reduction in ignition delay was noted for RSO, CSO and HSO by 5 to 7.1%, 1.4 to 9.5% and 7.9 to 13.5% except above 3100rpm at 5 °CA retarded fuel injection timing. Maximum power outputs of HSO (4.12kW), and CSO(4.38kW) were lower when compared with MD fuel (4.43kW) however maximum power outputs for RSO (4.47kW) and RME (4.63kW) were both higher when compared with MD fuel (4.43kW) at standard fuel injection timing. After 28 days HSO, CSO, RME and WCOME increased in acid value from 8.1 to 178.4% and peroxide value varied from -63.64% to 321.85%. Ignition delay, combustion chamber peak pressure signal and rate of pressure rise were unaffected by storage of the oils. Advancing fuel injection timing by 5 °CA in a 1.5L Tempest (BMC) engine had no significant effect on the power, torque and BMEP for RME, NOx and smoke emissions increased by 10.7 to 41.5% and by 24.5 to 74.3% respectively and CO reduced by 14.4 to 21.6% at BMEP<250kPa; but mean CO was higher by 1.2 to 21.9% for RME for 500kPa>BMEP>250kPa. HSO and CSO gave 4.9% and 5.6% higher maximum power than RSO, 12.6% and 13.3% more than RME and WCOME and 17.4% and 18.1% more than MD fuel respectively in a 1.8L NA IDI Ford Courier. HSO used 2.6 to 15.9% and 1.8 to 11.2% more fuel than RME and WCOME respectively whilst CSO used 2.1 to 16.3% and 2.1 to 12% more fuel than RME and WCOME respectively except above 3700rpm. HSO and CSO used 9.1 to 42.6% and 0 to 43.1% more fuel than MD fuel for all engine speeds. Mean NOx increased by 11.4 to 40.2% for HSO and 15.7 to 35.1% for CSO above 1800rpm compared with RME. NOx was higher by 11.9 to 34.6% for HSO and by 16.2 to 29.7% higher for CSO for all engine speeds than WCOME. Both HSO and CSO increased NOx by 6.9 to 55.1% and 5.1 to 56.9% compared with MD fuel above 1800rpm. RME and WCOME gave 2.2 to 26.7% and 1.8 to 25% greater NOx respectively than MD fuel above 3750rpm. After 492kWh use, RME gave carbon deposits on cylinder head, valves, piston crown and fuel injector in a 2kW DI diesel generator and the top piston ring was seized. Carbon build up on the inlet valve and port was between 1.2 x 10-3 and 3.8 x 10-3mm/kWh. An exponential rise in lubricating oil consumption and fuel consumption after 288kWh indicated the start of engine wear out. Neoprene and reinforced polyurethane are not suitable materials for RME fuel…

Advisors/Committee Members: Howard-Hildige, Robin.

Subjects/Keywords: biofuels; diesel engines

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Madden, O. (2011). Investigation of first generation biofuels in diesel engines. (Thesis). University of Limerick. Retrieved from http://hdl.handle.net/10344/1967

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Madden, Orla. “Investigation of first generation biofuels in diesel engines.” 2011. Thesis, University of Limerick. Accessed February 27, 2021. http://hdl.handle.net/10344/1967.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Madden, Orla. “Investigation of first generation biofuels in diesel engines.” 2011. Web. 27 Feb 2021.

Vancouver:

Madden O. Investigation of first generation biofuels in diesel engines. [Internet] [Thesis]. University of Limerick; 2011. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/10344/1967.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Madden O. Investigation of first generation biofuels in diesel engines. [Thesis]. University of Limerick; 2011. Available from: http://hdl.handle.net/10344/1967

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Nottingham

3. Di Liberto, Gianluca. Mechanisms of soot transfer to oil of an HPCR diesel engine.

Degree: PhD, 2017, University of Nottingham

URL: http://eprints.nottingham.ac.uk/42331/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.719609

► High levels of soot-in-oil can cause an increase in engine wear and oil viscosity, thus reducing oil drain intervals. The mechanisms by which soot particles… (more)

▼ High levels of soot-in-oil can cause an increase in engine wear and oil viscosity, thus reducing oil drain intervals. The mechanisms by which soot particles are entrained into the bulk oil are not well understood. The research reported in this thesis addresses questions on the mechanisms of soot transfer to the lubricating oil in light-duty diesel engines with high pressure EGR systems. Deposition as a result of blow-by gas passing the piston ring pack and by absorption to the oil film on the cylinder liner via thermophoresis are soot transfer mechanisms that have been considered in detail. The investigations are based on analytical and simulation studies, and results based on complementary experimental studies are used to validate these. The experimental investigations aimed at evaluating the typical rate of accumulation and size distribution of soot agglomerates in oil. The oil samples analysed were collected during regular services from light-duty diesel engine vehicles. These were representative of vehicles meeting Euro IV and V emission regulation standards driven under real-world conditions. The rate of soot-in-oil was determined by thermogravimetric analysis and results showed a concentration of approximately 1 wt% of soot-in-oil after 15,000 km. The particle size distribution was determined using a novel technique, Nanoparticle Tracking Analysis (NTA), applied for the first time to soot-laden oil samples by the author [1, 2]. Results showed an average particle size distribution of 150 nm, irrespective of oil drain interval. Almost the totality of the particles were between 70 and 400 nm, with micro particles not detected in any of the samples analysed. For the samples investigated in this work, the Euro standard did not influence either the rate of soot deposition or the particles size distribution. To the author’s best knowledge, this is the first time that rate of soot deposition and particles size distribution from oil samples collected from vehicles of different Euro standard driven under real-world conditions are analysed and compared. Exhaust Gas Recirculation (EGR) is a common technique used in diesel engines in order to reduce NO¬x emissions. However, it has the drawback that it increases the production of soot. In this work, particular attention has been given to its effects on the rate of soot deposition in oil. Both its influence on the soot produced during the combustion process and on the soot re-introduced in the combustion chamber by the EGR gas has been investigated through CFD simulations using Kiva-3V. Examining the relative importance of near–surface transport of soot by thermophoresis to the oil film on the liner and from blow-by gases to surfaces in the ring pack shows the former to be the dominant mechanism of soot transfer. EGR increases the rate of deposition of soot on the liner not only by increasing net production of soot, but also through the re-cycled particles. At EGR levels higher than 20%, the contribution of the Re-cycled soot becomes the major source for soot-in-oil. The…

Subjects/Keywords: 621.43; TJ751 Internal combustion engines. Diesel engines

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Di Liberto, G. (2017). Mechanisms of soot transfer to oil of an HPCR diesel engine. (Doctoral Dissertation). University of Nottingham. Retrieved from http://eprints.nottingham.ac.uk/42331/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.719609

Chicago Manual of Style (16^th Edition):

Di Liberto, Gianluca. “Mechanisms of soot transfer to oil of an HPCR diesel engine.” 2017. Doctoral Dissertation, University of Nottingham. Accessed February 27, 2021. http://eprints.nottingham.ac.uk/42331/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.719609.

MLA Handbook (7^th Edition):

Di Liberto, Gianluca. “Mechanisms of soot transfer to oil of an HPCR diesel engine.” 2017. Web. 27 Feb 2021.

Vancouver:

Di Liberto G. Mechanisms of soot transfer to oil of an HPCR diesel engine. [Internet] [Doctoral dissertation]. University of Nottingham; 2017. [cited 2021 Feb 27]. Available from: http://eprints.nottingham.ac.uk/42331/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.719609.

Council of Science Editors:

Di Liberto G. Mechanisms of soot transfer to oil of an HPCR diesel engine. [Doctoral Dissertation]. University of Nottingham; 2017. Available from: http://eprints.nottingham.ac.uk/42331/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.719609

University of Nottingham

4. Wan Mahmood, Wan Mohd Faizal. Computational studies of soot paths to cylinder wall layers of a direct injection diesel engine.

Degree: PhD, 2011, University of Nottingham

URL: http://eprints.nottingham.ac.uk/12064/ ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.541430

► The investigation reported in this thesis is concerned with the topic of soot formation and soot particle motion in the cylinder of a light duty… (more)

▼ The investigation reported in this thesis is concerned with the topic of soot formation and soot particle motion in the cylinder of a light duty automotive diesel engine. CFD has been employed to simulate in-cylinder conditions and to investigate the source of particles which are transferred to the oil. The accumulation of soot in the lubricating oil of diesel engines is one of the factors limiting the interval between oil changes and hence service interval. Soot particles can be transferred to oil film on the cylinder wall layers through the complex motion of the fluid flow in the cylinder. The paths of soot particles from specific in-cylinder locations and crank angle instants have been explored using the results for cylinder charge motion predicted by the Kiva-3v CFD code. Using the velocity fields from the simulation data, massless tracking of the in-cylinder soot particles in space and time is carried out employing a particle tracking with trilinear interpolation technique. From this investigation, new computational codes for the prediction of soot particle paths and soot particle size change along a specific path in a diesel engine have been developed. This investigation is the first numerical study into soot particle trajectories within an engine and thus opens up a novel branch of research of soot formation within internal combustion engines. Computed soot paths from the investigation show that soot particles formed just below the fuel spray axis inside the middle bowl area during early injection period are more likely sources of soot particles on the cylinder wall layers than those formed later. Soot particles that are formed above the fuel axis have less tendency to be transported to the cylinder wall layers thus are not likely to be the main source of soot at the cylinder walls. Soot particles that are from the bowl rim area are found to be another source of soot transfer to the boundary layer, as they are directly exposed to reverse squish motion during the expansion stroke. Soot particles that are formed near the cylinder jet axis during fuel injection tend to move into the bowl. These soot particles are found to be from the relatively less concentrated area. In contrast, particles from the most concentrated areas tend to be moving into the bowl and pose least risk of contaminating oil films on the liner. Sensitivity studies of soot particle paths to swirl show that engine operating with low swirl ratios are more vulnerable to soot in oil problem as low swirls cause the bulk fluid flow to be moving closer to the cylinder walls due to fuel jet velocity and reverse squish motions. Decreasing the spray angle lessens the possibilities of soot particles from being transported close the cylinder wall layers while increasing the spray angle increases the possibilities of soot from the bowl region to be transported close to the cylinder wall layers. The temporal and spatial evolution of soot particle size can be predicted by using the history of temperature, pressure and gas species along the paths. An…

Subjects/Keywords: 621.43; TJ751 Internal combustion engines. Diesel engines

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Wan Mahmood, W. M. F. (2011). Computational studies of soot paths to cylinder wall layers of a direct injection diesel engine. (Doctoral Dissertation). University of Nottingham. Retrieved from http://eprints.nottingham.ac.uk/12064/ ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.541430

Chicago Manual of Style (16^th Edition):

Wan Mahmood, Wan Mohd Faizal. “Computational studies of soot paths to cylinder wall layers of a direct injection diesel engine.” 2011. Doctoral Dissertation, University of Nottingham. Accessed February 27, 2021. http://eprints.nottingham.ac.uk/12064/ ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.541430.

MLA Handbook (7^th Edition):

Wan Mahmood, Wan Mohd Faizal. “Computational studies of soot paths to cylinder wall layers of a direct injection diesel engine.” 2011. Web. 27 Feb 2021.

Vancouver:

Wan Mahmood WMF. Computational studies of soot paths to cylinder wall layers of a direct injection diesel engine. [Internet] [Doctoral dissertation]. University of Nottingham; 2011. [cited 2021 Feb 27]. Available from: http://eprints.nottingham.ac.uk/12064/ ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.541430.

Council of Science Editors:

Wan Mahmood WMF. Computational studies of soot paths to cylinder wall layers of a direct injection diesel engine. [Doctoral Dissertation]. University of Nottingham; 2011. Available from: http://eprints.nottingham.ac.uk/12064/ ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.541430

University of Nottingham

5. McGhee, Michael James. Factors influencing cycle-by-cycle combustion characteristics of a diesel engine under cold idling conditions.

Degree: PhD, 2013, University of Nottingham

URL: http://eprints.nottingham.ac.uk/13179/ ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.580219

► An experimental investigation of post-start cold idling behaviour has been carried out on a modern single-cylinder HPCR DI light duty diesel engine with a low… (more)

▼ An experimental investigation of post-start cold idling behaviour has been carried out on a modern single-cylinder HPCR DI light duty diesel engine with a low compression ratio of 15.5:1 at temperatures between 10 and -20°C. The trend toward lower compression ratios from more common values of around 22:1 a few years ago has resulted in lower compression pressures and temperatures, which negatively affects cold idle operation. Improvements in cycle-by-cycle stability of indicated work output through fuel injection strategy and glow plug temperature changes have been explored. This is important to improve NVH and the consumer’s perception of vehicle quality. The key effects on heat release characteristics have been identified and the associated impact on stability discussed. High speed imaging of ignition in a combustion bomb has been used to aid interpretation of engine results. Up to four pilot injections placed in advance of the main have been used. Shorter separation between pilots and pilot-to-main improves stability independent of the number of pilot injections and extends the range of main injection timings to meet target stability of 10% or lower at -20°C. Increasing the number of pilot injections was effective in stabilising combustion at all investigated soak temperatures at fuelling levels producing indicated work required to match friction and ancillary demands. Stability can be susceptible to deterioration at moderate soak temperatures because fuelling demand is relatively low. If a high number of pilot injections are to be avoided to reduce potential wear, then increasing main injection quantity is an effective method to stabilise combustion for a lower pilot number strategy but any increase above target load has to be harnessed by additional ancillary devices. Very high glow plug temperatures of up to 1200°C were examined using a smaller diameter tip ceramic type design. Stable combustion cannot be achieved through higher glow plug temperatures alone. A temperature of 1000°C, which can be achieved using a low voltage metallic type, is adequate to stabilise combustion when combined with a triple-pilot strategy at sub-zero temperatures. The best stability is achieved using 1200°C, which can only be achieved using a more expensive ceramic type, in combination with a triple-pilot strategy producing the desirable target of ~5% or below; the effects are not mutually exclusive. At high glow plug temperatures and using three or four pilot injections, stability improved with warmer soak temperatures. At -5°C, stability was relatively poor when one or two pilots were used irrespective of glow plug temperature. A high premixed contribution to main combustion is associated with improved stability. Minimum threshold values are necessary to stabilise combustion: ~25 J/° at -20°C, ~20 J/° at -5°C and only ~10 J/° at 10°C. A higher number of pilot injections raises pilot induced combustion and improves mixture distribution. These effects subsequently increase the premixed combustion and help sustain a strong main…

Subjects/Keywords: 621.436; TJ751 Internal combustion engines. Diesel engines

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

McGhee, M. J. (2013). Factors influencing cycle-by-cycle combustion characteristics of a diesel engine under cold idling conditions. (Doctoral Dissertation). University of Nottingham. Retrieved from http://eprints.nottingham.ac.uk/13179/ ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.580219

Chicago Manual of Style (16^th Edition):

McGhee, Michael James. “Factors influencing cycle-by-cycle combustion characteristics of a diesel engine under cold idling conditions.” 2013. Doctoral Dissertation, University of Nottingham. Accessed February 27, 2021. http://eprints.nottingham.ac.uk/13179/ ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.580219.

MLA Handbook (7^th Edition):

McGhee, Michael James. “Factors influencing cycle-by-cycle combustion characteristics of a diesel engine under cold idling conditions.” 2013. Web. 27 Feb 2021.

Vancouver:

McGhee MJ. Factors influencing cycle-by-cycle combustion characteristics of a diesel engine under cold idling conditions. [Internet] [Doctoral dissertation]. University of Nottingham; 2013. [cited 2021 Feb 27]. Available from: http://eprints.nottingham.ac.uk/13179/ ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.580219.

Council of Science Editors:

McGhee MJ. Factors influencing cycle-by-cycle combustion characteristics of a diesel engine under cold idling conditions. [Doctoral Dissertation]. University of Nottingham; 2013. Available from: http://eprints.nottingham.ac.uk/13179/ ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.580219

University of Nottingham

6. Chandran, Davannendran. Experimental investigation into the physico-chemical properties changes of palm biodiesel under common rail diesel engine operation for the elucidation of metal corrosion and elastomer degradation in fuel delivery system.

Degree: PhD, 2017, University of Nottingham

URL: http://eprints.nottingham.ac.uk/35228/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.734366

► Compatibility of fuel delivery materials (FDM) with biodiesel fuel in the fuel delivery system (FDS) under real-life common rail diesel engine (CRDE) operation poses a… (more)

▼ Compatibility of fuel delivery materials (FDM) with biodiesel fuel in the fuel delivery system (FDS) under real-life common rail diesel engine (CRDE) operation poses a challenge to researchers and engine manufacturers alike. Although standard methods such as ASTM G31 and ASTM D471 for metals and elastomers, respectively, are deemed suitable for evaluating the effects of water content, total acid number (TAN) and oxidation products in biodiesel on FDM degradation, they do not resemble the actual engine operation conditions such as varying fuel pressure/temperature as well as the presence of a wide range of materials in the FDS of a diesel engine. Hence, the current allowable maximum 20 vol% of biodiesel with 80 vol% of diesel (B20) for use in diesel engines to date is debatable. Additionally, biodiesel utilization beyond B20 is essential to combat declining air quality and to reduce the dependence on fuel imports. This thesis aims to elucidate the actual compatibility present between FDM and biodiesel in the FDS under real-life CRDE operation. This was achieved through multi-faceted experimentations which commenced with analyses on the deteriorated palm biodiesel samples collected during and after CRDE operation. Next, the fuel properties which should be emphasized based on the deteriorated fuel were determined. This was then followed by ascertaining the effects of the emphasized fuel properties towards FDM degradation. Ultimately, the actual compatibility of FDM with biodiesel under engine operation through modified immersion investigations was determined. FDM degradation acceleration factors such as oxidized biodiesel, TAN and water content were eliminated since these factors were not affected based on the analysed fuel samples collected after engine operation. No oxidation products such as aldehydes, ketones and carboxylic acids were detected while the TAN and water content were within 0.446% and 0.625% of their initial values, respectively. Instead, the biodiesel’s dissolved oxygen (DO) concentration and conductivity value were not only found to have changed during and after engine operation by -93% and 293%, respectively, but were also found to have influenced biodiesel deterioration under engine operation. These two properties were subsequently discovered to have adversely affected FDM degradation independently. The copper corrosion rate and nitrile rubber (NBR) volume change increased by 9% and 13%, respectively, due to 22% increase in the conductivity value. In contrast, the copper corrosion rate and NBR volume swelling reduced by 91% and 27%, respectively, due to 96% reduction in the DO concentration. Ultimately, copper corrosion and NBR degradation were determined to be lowered by up to 92% and 73%, respectively, under modified immersion as compared to typical immersion condition. These outcomes distinctly show that acceptable to good compatibility is present between FDM and biodiesel under CRDE operation. The good compatibility is strongly supported since only a maximum lifespan reduction of 1.5 years is…

Subjects/Keywords: 621.43; TJ751 Internal combustion engines. Diesel engines

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Chandran, D. (2017). Experimental investigation into the physico-chemical properties changes of palm biodiesel under common rail diesel engine operation for the elucidation of metal corrosion and elastomer degradation in fuel delivery system. (Doctoral Dissertation). University of Nottingham. Retrieved from http://eprints.nottingham.ac.uk/35228/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.734366

Chicago Manual of Style (16^th Edition):

Chandran, Davannendran. “Experimental investigation into the physico-chemical properties changes of palm biodiesel under common rail diesel engine operation for the elucidation of metal corrosion and elastomer degradation in fuel delivery system.” 2017. Doctoral Dissertation, University of Nottingham. Accessed February 27, 2021. http://eprints.nottingham.ac.uk/35228/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.734366.

MLA Handbook (7^th Edition):

Chandran, Davannendran. “Experimental investigation into the physico-chemical properties changes of palm biodiesel under common rail diesel engine operation for the elucidation of metal corrosion and elastomer degradation in fuel delivery system.” 2017. Web. 27 Feb 2021.

Vancouver:

Chandran D. Experimental investigation into the physico-chemical properties changes of palm biodiesel under common rail diesel engine operation for the elucidation of metal corrosion and elastomer degradation in fuel delivery system. [Internet] [Doctoral dissertation]. University of Nottingham; 2017. [cited 2021 Feb 27]. Available from: http://eprints.nottingham.ac.uk/35228/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.734366.

Council of Science Editors:

Chandran D. Experimental investigation into the physico-chemical properties changes of palm biodiesel under common rail diesel engine operation for the elucidation of metal corrosion and elastomer degradation in fuel delivery system. [Doctoral Dissertation]. University of Nottingham; 2017. Available from: http://eprints.nottingham.ac.uk/35228/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.734366

University of Pretoria

7. [No author]. Investigation into a system that can detect improper combustion in a diesel engine before significant damage can occur .

Degree: 2009, University of Pretoria

URL: http://upetd.up.ac.za/thesis/available/etd-11262009-210133/

► An alarming number of compression ignition (CI) engines in the transport, mining and heavy engineering environments have been failing due to combustion irregularities within their… (more)

▼ An alarming number of compression ignition (CI) engines in the transport, mining and heavy engineering environments have been failing due to combustion irregularities within their combustion chambers. It has been found that diesel fuels containing contaminants or diesel fuels with poor lubricity characteristics lead to stickiness of diesel injector needles, which badly affects injector spray patterns resulting in the phenomenon of “cold combustion”. This study has been undertaken to develop a technique for detecting and preventing the damage resulting from this deviation in the combustion of a diesel engine. The technique has been formulated with a view to being as non intrusive as possible, so as not to require major modification of an existing test engine to accommodate the technique. The practice of monitoring individual cylinder exhaust gas temperatures (EGTs) proved to be an effective way of determining whether potentially destructive combustion abnormalities were taking place within the diesel engine. By recording these temperatures at certain stages during the engine’s operation, taking their average, and comparing each one to this average it is also possible to isolate the location of the combustion abnormality. This method proved to be most effective at full loads and maximum fuel delivery where combustion temperatures are highest and the effects of poor combustion are most noticeable and potentially damaging. The second goal was to develop a small, portable electronic device that makes use of the monitoring technique developed and provides a visual and audible alarm to notify a vehicle operator or technician of a combustion fault within a diesel engine. A Combustion Monitoring System (CMS) prototype was developed and tested on a small naturally aspirated engine at the University of Pretoria’s engine testing facilities. The prototype met its primary goal of detecting simulated combustion abnormalities under a variety of test conditions. It is envisaged that the monitoring techniques applied in developing the CMS unit may eventually be incorporated into the powerful processing abilities of the modern diesel Engine Control Unit (ECU). In its current form the CMS prototype is a useful tool in sensing combustion related malfunctions within a diesel engine and preventing damage from occurring. Advisors/Committee Members: Prof N D L Burger (advisor), Prof A von Wielligh (advisor).

Subjects/Keywords: Improper combustion; Diesel engines; UCTD

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

author], [. (2009). Investigation into a system that can detect improper combustion in a diesel engine before significant damage can occur . (Masters Thesis). University of Pretoria. Retrieved from http://upetd.up.ac.za/thesis/available/etd-11262009-210133/

Chicago Manual of Style (16^th Edition):

author], [No. “Investigation into a system that can detect improper combustion in a diesel engine before significant damage can occur .” 2009. Masters Thesis, University of Pretoria. Accessed February 27, 2021. http://upetd.up.ac.za/thesis/available/etd-11262009-210133/.

MLA Handbook (7^th Edition):

author], [No. “Investigation into a system that can detect improper combustion in a diesel engine before significant damage can occur .” 2009. Web. 27 Feb 2021.

Vancouver:

author] [. Investigation into a system that can detect improper combustion in a diesel engine before significant damage can occur . [Internet] [Masters thesis]. University of Pretoria; 2009. [cited 2021 Feb 27]. Available from: http://upetd.up.ac.za/thesis/available/etd-11262009-210133/.

Council of Science Editors:

author] [. Investigation into a system that can detect improper combustion in a diesel engine before significant damage can occur . [Masters Thesis]. University of Pretoria; 2009. Available from: http://upetd.up.ac.za/thesis/available/etd-11262009-210133/

8. Azmeera, Aruna Kumari. Combustion and emission characteristics of di diesel engines using bio diesel; -.

Degree: Mechanical, 2013, Jawaharlal Nehru Technological University, Hyderabad

URL: http://shodhganga.inflibnet.ac.in/handle/10603/16389

►

Now a days for any country energy resourses in particular petroleum products have become important for its development. The products derived from crude oil continued… (more)

Subjects/Keywords: Characteristics; Combustion; Diesel; Emission; Engines

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Azmeera, A. K. (2013). Combustion and emission characteristics of di diesel engines using bio diesel; -. (Thesis). Jawaharlal Nehru Technological University, Hyderabad. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/16389

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Azmeera, Aruna Kumari. “Combustion and emission characteristics of di diesel engines using bio diesel; -.” 2013. Thesis, Jawaharlal Nehru Technological University, Hyderabad. Accessed February 27, 2021. http://shodhganga.inflibnet.ac.in/handle/10603/16389.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Azmeera, Aruna Kumari. “Combustion and emission characteristics of di diesel engines using bio diesel; -.” 2013. Web. 27 Feb 2021.

Vancouver:

Azmeera AK. Combustion and emission characteristics of di diesel engines using bio diesel; -. [Internet] [Thesis]. Jawaharlal Nehru Technological University, Hyderabad; 2013. [cited 2021 Feb 27]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/16389.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Azmeera AK. Combustion and emission characteristics of di diesel engines using bio diesel; -. [Thesis]. Jawaharlal Nehru Technological University, Hyderabad; 2013. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/16389

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Pretoria

9. Wilcocks, Theo Lawrence. Investigation into a system that can detect improper combustion in a diesel engine before significant damage can occur.

Degree: Mechanical and Aeronautical Engineering, 2009, University of Pretoria

URL: http://hdl.handle.net/2263/29841

► An alarming number of compression ignition (CI) engines in the transport, mining and heavy engineering environments have been failing due to combustion irregularities within their… (more)

▼ An alarming number of compression ignition (CI) engines in the transport, mining and heavy engineering environments have been failing due to combustion irregularities within their combustion chambers. It has been found that diesel fuels containing contaminants or diesel fuels with poor lubricity characteristics lead to stickiness of diesel injector needles, which badly affects injector spray patterns resulting in the phenomenon of “cold combustion”. This study has been undertaken to develop a technique for detecting and preventing the damage resulting from this deviation in the combustion of a diesel engine. The technique has been formulated with a view to being as non intrusive as possible, so as not to require major modification of an existing test engine to accommodate the technique. The practice of monitoring individual cylinder exhaust gas temperatures (EGTs) proved to be an effective way of determining whether potentially destructive combustion abnormalities were taking place within the diesel engine. By recording these temperatures at certain stages during the engine’s operation, taking their average, and comparing each one to this average it is also possible to isolate the location of the combustion abnormality. This method proved to be most effective at full loads and maximum fuel delivery where combustion temperatures are highest and the effects of poor combustion are most noticeable and potentially damaging. The second goal was to develop a small, portable electronic device that makes use of the monitoring technique developed and provides a visual and audible alarm to notify a vehicle operator or technician of a combustion fault within a diesel engine. A Combustion Monitoring System (CMS) prototype was developed and tested on a small naturally aspirated engine at the University of Pretoria’s engine testing facilities. The prototype met its primary goal of detecting simulated combustion abnormalities under a variety of test conditions. It is envisaged that the monitoring techniques applied in developing the CMS unit may eventually be incorporated into the powerful processing abilities of the modern diesel Engine Control Unit (ECU). In its current form the CMS prototype is a useful tool in sensing combustion related malfunctions within a diesel engine and preventing damage from occurring. Advisors/Committee Members: Prof N D L Burger (advisor), Prof A von Wielligh (advisor).

Subjects/Keywords: Improper combustion; Diesel engines; UCTD

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Wilcocks, T. (2009). Investigation into a system that can detect improper combustion in a diesel engine before significant damage can occur. (Masters Thesis). University of Pretoria. Retrieved from http://hdl.handle.net/2263/29841

Chicago Manual of Style (16^th Edition):

Wilcocks, Theo. “Investigation into a system that can detect improper combustion in a diesel engine before significant damage can occur.” 2009. Masters Thesis, University of Pretoria. Accessed February 27, 2021. http://hdl.handle.net/2263/29841.

MLA Handbook (7^th Edition):

Wilcocks, Theo. “Investigation into a system that can detect improper combustion in a diesel engine before significant damage can occur.” 2009. Web. 27 Feb 2021.

Vancouver:

Wilcocks T. Investigation into a system that can detect improper combustion in a diesel engine before significant damage can occur. [Internet] [Masters thesis]. University of Pretoria; 2009. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/2263/29841.

Council of Science Editors:

Wilcocks T. Investigation into a system that can detect improper combustion in a diesel engine before significant damage can occur. [Masters Thesis]. University of Pretoria; 2009. Available from: http://hdl.handle.net/2263/29841

Texas A&M University

10. Breen, Jonathan Robert. Development of Low Temperature Combustion Modes to Reduce Overall Emissions from a Medium-Duty, Four Cylinder Diesel Engine.

Degree: MS, Mechanical Engineering, 2011, Texas A&M University

URL: http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8250

► Low temperature combustion (LTC) is an appealing new method of combustion that promises low nitric oxides and soot emissions while maintaining or improving on engine… (more)

▼ Low temperature combustion (LTC) is an appealing new method of combustion that promises low nitric oxides and soot emissions while maintaining or improving on engine performance. The three main points of this study were to develop and validate an engine model in GT-Power capable of implementing LTC, to study parametrically exhaust gas recirculation (EGR) and injection timing effects on performance and emissions, and to investigate methods to decrease pressure rise rates during LTC operation. The model was validated at nine different operating points, 3 speeds and 3 loads, while the parametric studies were conducted on 6 of the 9 operating points, 3 speeds and 2 loads. The model consists of sections that include: cylinders, ports, intake and exhaust manifolds, EGR system, and turbocharger. For this model, GT-Power calculates the combustion using a multi-zone, quasi-dimensional model and a knock-induced combustion model. The main difference between them is that the multi-zone model is directly injected while the knock model is port injected. A variety of sub models calculate the fluid flow and heat transfer. A parametric study varying the EGR and the injection timing to determine the optimal combination was conducted using the multi-zone model while a parametric study that just varies EGR is carried out using the knock model. The first parametric study showed that the optimal EGR and injection timing combination for the low loads occurred at high levels of EGR (60 percent) and advanced injection timings (30 to 40 crank angle degrees before top dead center). The optimal EGR and injection timing combination for the high loads occurred at low levels of EGR (30 percent to 40 percent) and retarded injection timings (7.5 to 5 crank angle degrees before top dead center). The knock model determined that the ideal EGR ratio for homogeneous charge compression ignition (HCCI) operation varied from 30 percent to 45 percent, depending on the operating condition. Three methods were investigated as possible ways to reduce pressure rise rates during LTC operation. The only feasible method was the multiple injection strategy which provided dramatically reduced pressure rise rates across all EGR levels and injection timings. Advisors/Committee Members: Caton, Jerald A. (advisor), Jacobs, Timothy J. (committee member), Capareda, Sergio (committee member).

Subjects/Keywords: Low Temperature Combustion; Diesel Combustion; Diesel Engines; HCCI; Diesel Emissions

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Breen, J. R. (2011). Development of Low Temperature Combustion Modes to Reduce Overall Emissions from a Medium-Duty, Four Cylinder Diesel Engine. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8250

Chicago Manual of Style (16^th Edition):

Breen, Jonathan Robert. “Development of Low Temperature Combustion Modes to Reduce Overall Emissions from a Medium-Duty, Four Cylinder Diesel Engine.” 2011. Masters Thesis, Texas A&M University. Accessed February 27, 2021. http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8250.

MLA Handbook (7^th Edition):

Breen, Jonathan Robert. “Development of Low Temperature Combustion Modes to Reduce Overall Emissions from a Medium-Duty, Four Cylinder Diesel Engine.” 2011. Web. 27 Feb 2021.

Vancouver:

Breen JR. Development of Low Temperature Combustion Modes to Reduce Overall Emissions from a Medium-Duty, Four Cylinder Diesel Engine. [Internet] [Masters thesis]. Texas A&M University; 2011. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8250.

Council of Science Editors:

Breen JR. Development of Low Temperature Combustion Modes to Reduce Overall Emissions from a Medium-Duty, Four Cylinder Diesel Engine. [Masters Thesis]. Texas A&M University; 2011. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8250

Rochester Institute of Technology

11. Zoyhofski, Rachel M. Estimates of Emissions from Heavy Duty Diesel Vehicles (HDDV) and Control Strategies Related to Transport Activities Supporting High Volume Hydraulic Fracturing Wells in the Marcellus Shale Formation.

Degree: MS, Thomas H. Gosnell School of Life Sciences (COS), 2016, Rochester Institute of Technology

URL: https://scholarworks.rit.edu/theses/9055

► This project examined estimated emission reductions from implementing advanced control technologies in heavy duty diesel engines and to assess potential emission impacts from trucks… (more)

▼ This project examined estimated emission reductions from implementing advanced control technologies in heavy duty diesel engines and to assess potential emission impacts from trucks supporting the High Volume Hydraulic Fracturing (HVHF) industry in Pennsylvania’s portion of the Marcellus Shale Formation. Models were run examining mitigation strategies, including retrofit devices and alternative fuel strategies. Results compare estimated emissions associated with current HVHF truck transportation and potential emission reductions from control technologies. Models utilized the Geospatial Intermodal Freight Transport (GIFT) model. Results suggest that while some retrofits, such as diesel particulate filters, are able to reach emissions reductions comparable to newly manufactured vehicles MY2007 and maintain their economic viability, other devices, such as those to remove NOx, while cost effective, are not able to achieve target emissions reductions alone. This suggests that retrofits should act as a component of a comprehensive vehicle emission reduction plan. Several assumptions were made in the modelling process. Engine operating conditions were assumed to remain constant in this study. For a more accurate profile, factors influencing engine performance such as weather, road quality, and engine load should be examined further. There were no cumulative effects of retrofits examined in this study, but fleets often couple devices for additional environmental benefits. Finally a more updated set of in-use emissions factors used in the baseline model are needed. The data used here were the best publically available at the time (2008 EPA Average In-use Rates). These inputs provide a potential source of error, as the in-use emissions assumed here may not accurately represent the current (2011-2013) state of trucking fleets used in the model. To create the most accurate profile possible, these factors need to be examined regionally and a more recent set of in-use emission variables need to be used in the modeling stage. Advisors/Committee Members: Karl Korfmacher.

Subjects/Keywords: Diesel engines; Economics; Emissions; Health impacts; Hydrofracking

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Zoyhofski, R. M. (2016). Estimates of Emissions from Heavy Duty Diesel Vehicles (HDDV) and Control Strategies Related to Transport Activities Supporting High Volume Hydraulic Fracturing Wells in the Marcellus Shale Formation. (Masters Thesis). Rochester Institute of Technology. Retrieved from https://scholarworks.rit.edu/theses/9055

Chicago Manual of Style (16^th Edition):

Zoyhofski, Rachel M. “Estimates of Emissions from Heavy Duty Diesel Vehicles (HDDV) and Control Strategies Related to Transport Activities Supporting High Volume Hydraulic Fracturing Wells in the Marcellus Shale Formation.” 2016. Masters Thesis, Rochester Institute of Technology. Accessed February 27, 2021. https://scholarworks.rit.edu/theses/9055.

MLA Handbook (7^th Edition):

Zoyhofski, Rachel M. “Estimates of Emissions from Heavy Duty Diesel Vehicles (HDDV) and Control Strategies Related to Transport Activities Supporting High Volume Hydraulic Fracturing Wells in the Marcellus Shale Formation.” 2016. Web. 27 Feb 2021.

Vancouver:

Zoyhofski RM. Estimates of Emissions from Heavy Duty Diesel Vehicles (HDDV) and Control Strategies Related to Transport Activities Supporting High Volume Hydraulic Fracturing Wells in the Marcellus Shale Formation. [Internet] [Masters thesis]. Rochester Institute of Technology; 2016. [cited 2021 Feb 27]. Available from: https://scholarworks.rit.edu/theses/9055.

Council of Science Editors:

Zoyhofski RM. Estimates of Emissions from Heavy Duty Diesel Vehicles (HDDV) and Control Strategies Related to Transport Activities Supporting High Volume Hydraulic Fracturing Wells in the Marcellus Shale Formation. [Masters Thesis]. Rochester Institute of Technology; 2016. Available from: https://scholarworks.rit.edu/theses/9055

12. Reddy, M Srinivasa. Investigations on reduction of NOx emission in DI diesel engines through CFD simulation.

Degree: Mechanical Engineering, 2013, Jawaharlal Nehru Technological University, Anantapuram

URL: http://shodhganga.inflibnet.ac.in/handle/10603/13001

►

Direct Injection (DI) diesel engines have taken a prominent place in public and private transport. Emissions of the diesel engine emissions Carbon monoxide (CO), Hydro… (more)

▼

Direct Injection (DI) diesel engines have taken a prominent place in public and private transport. Emissions of the diesel engine emissions Carbon monoxide (CO), Hydro Carbon (HC) have been effectively controlled with improvement in engine deign. However Nitrogen Oxides (NOx) and soot are still a matter of concern for the engineers. The main objective of the present work is to study the ways and means to reduce NOx emission in DI diesel engines. A significant portion of the combustion process in DI diesel engines takes place in diffusion flames. Under these conditions, rates of chemical reaction and heat release are therefore controlled by rates of fuel-air mixing. The physical effects, which drive the fuel-air mixing in these engines, appear to be related to the air motion effects, combustion chamber geometry and fuel injection process. An understanding of relative influences of these individual effects is necessary. With the experimental techniques available today, it is possible to make reasonably accurate measurements to study the in-cylinder fluid characteristics. But they are very expensive and time consuming. Over the past two decades, simulation of fluid dynamic based multi-dimensional models for studying in-cylinder fluid dynamics has become popular in the Internal Combustion (IC) engines field. The main advantages of such models are that they reduce the cost and time consuming experimental research. ii In this work, an attempt is made to study the influence of engine operating parameters on Nitric Oxide (NO) emissions using a Computational Fluid Dynamic (CFD) code. STAR-CD a 3-dimensional (3-D) CFD code based on finite volume method has been used for this purpose, which is capable of solving 3-D unsteady turbulent flows, sprays and combustion of IC engines. As a first step, a four-stroke single cylinder Compression Ignition (CI) engine fitted with hemi-spherical bowl-in-piston for which experimental results are available is considered to carryout the CFD analysis.

Conclusion p. 210-213, References p. 214-227

Advisors/Committee Members: Reddy, K Hemachandra.

Subjects/Keywords: CFD simulation; NOx emission; DI diesel engines

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Reddy, M. S. (2013). Investigations on reduction of NOx emission in DI diesel engines through CFD simulation. (Thesis). Jawaharlal Nehru Technological University, Anantapuram. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/13001

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Reddy, M Srinivasa. “Investigations on reduction of NOx emission in DI diesel engines through CFD simulation.” 2013. Thesis, Jawaharlal Nehru Technological University, Anantapuram. Accessed February 27, 2021. http://shodhganga.inflibnet.ac.in/handle/10603/13001.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Reddy, M Srinivasa. “Investigations on reduction of NOx emission in DI diesel engines through CFD simulation.” 2013. Web. 27 Feb 2021.

Vancouver:

Reddy MS. Investigations on reduction of NOx emission in DI diesel engines through CFD simulation. [Internet] [Thesis]. Jawaharlal Nehru Technological University, Anantapuram; 2013. [cited 2021 Feb 27]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/13001.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Reddy MS. Investigations on reduction of NOx emission in DI diesel engines through CFD simulation. [Thesis]. Jawaharlal Nehru Technological University, Anantapuram; 2013. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/13001

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

13. Jaya, N. Studies on transesterification of triglycerides using ion exchange resin catalysts; -.

Degree: Chemistry, 2011, Bharathidasan University

URL: http://shodhganga.inflibnet.ac.in/handle/10603/4808

►

In this thesis, studies on batch transesterification of indigenously available pongamia oil and cotton seed oil using methanol in the presence of anion exchange resin… (more)

Subjects/Keywords: Vegetable oils; diesel engines; transesterification reactions; Chemistry

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Jaya, N. (2011). Studies on transesterification of triglycerides using ion exchange resin catalysts; -. (Thesis). Bharathidasan University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/4808

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Jaya, N. “Studies on transesterification of triglycerides using ion exchange resin catalysts; -.” 2011. Thesis, Bharathidasan University. Accessed February 27, 2021. http://shodhganga.inflibnet.ac.in/handle/10603/4808.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Jaya, N. “Studies on transesterification of triglycerides using ion exchange resin catalysts; -.” 2011. Web. 27 Feb 2021.

Vancouver:

Jaya N. Studies on transesterification of triglycerides using ion exchange resin catalysts; -. [Internet] [Thesis]. Bharathidasan University; 2011. [cited 2021 Feb 27]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/4808.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Jaya N. Studies on transesterification of triglycerides using ion exchange resin catalysts; -. [Thesis]. Bharathidasan University; 2011. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/4808

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Delft University of Technology

14. Kouroutzis, S. (author). The dynamic modeling of diesel engines in support of risk control in adverse conditions: TU Delft collaboration in the SHOPERA program.

Degree: 2015, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:b1c0303b-cd4d-4608-90b7-41a9fbe32215

►

Ship accidents are caused daily others not so important with only scratches on the ship hulls and others are fatal for human life and also… (more)

Subjects/Keywords: diesel engines; heavy weather; EEDI; simulation; SHOPERA

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Kouroutzis, S. (. (2015). The dynamic modeling of diesel engines in support of risk control in adverse conditions: TU Delft collaboration in the SHOPERA program. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:b1c0303b-cd4d-4608-90b7-41a9fbe32215

Chicago Manual of Style (16^th Edition):

Kouroutzis, S (author). “The dynamic modeling of diesel engines in support of risk control in adverse conditions: TU Delft collaboration in the SHOPERA program.” 2015. Masters Thesis, Delft University of Technology. Accessed February 27, 2021. http://resolver.tudelft.nl/uuid:b1c0303b-cd4d-4608-90b7-41a9fbe32215.

MLA Handbook (7^th Edition):

Kouroutzis, S (author). “The dynamic modeling of diesel engines in support of risk control in adverse conditions: TU Delft collaboration in the SHOPERA program.” 2015. Web. 27 Feb 2021.

Vancouver:

Kouroutzis S(. The dynamic modeling of diesel engines in support of risk control in adverse conditions: TU Delft collaboration in the SHOPERA program. [Internet] [Masters thesis]. Delft University of Technology; 2015. [cited 2021 Feb 27]. Available from: http://resolver.tudelft.nl/uuid:b1c0303b-cd4d-4608-90b7-41a9fbe32215.

Council of Science Editors:

Kouroutzis S(. The dynamic modeling of diesel engines in support of risk control in adverse conditions: TU Delft collaboration in the SHOPERA program. [Masters Thesis]. Delft University of Technology; 2015. Available from: http://resolver.tudelft.nl/uuid:b1c0303b-cd4d-4608-90b7-41a9fbe32215

15. Galindo Lopez, S. (author). Three-Zone in-cylinder process model for DI diesel engines.

Degree: 2014, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:3eba6c98-1945-4c61-99bb-3af0f2a0ca4a

►

The need to reduce harmful emissions to the environment is been addressed on different fronts. Diesel engines, as one of the prime movers in transport… (more)

▼

The need to reduce harmful emissions to the environment is been addressed on different fronts. Diesel engines, as one of the prime movers in transport industry, has become an active research focus for several years in order to improve their efficiency while keeping the harmful emissions the lowest possible. The inclusion of more stringent regulations and emission control areas such as NECA in the north sea demands for a better understanding of the combustion process in the cylinder in order to reduce emissions. To study such problem an approach is to regard the cylinder as a perfectly mixed volume. This concept is very simple and allows for fast calculations but it lacks the physics and the resolution necessary to study pollutants formation. The main objective of this thesis is to propose a model where the cylinder volume is divided into a few volumes, so the cylinder process can be studied in more detail and some resolution is included to calculate NO emissions. A model with three control volumes, called zones, is introduced. One zone represents the liquid fuel in the cylinder and two zones represent the gas mixture. In one of the gaseous zones the mixture preparation and combustion reaction occur; the second gaseous zone provides the oxidant to the previous zone and the combustion products are further mixed with air. The detailed model and the equations necessary to simulate the process are introduced. The required sub-models are proposed and the implementation of the complete model is done in different steps. First the liquid volume is treated and tested under a set of different conditions. In a second step the gas phase is simulated by neglecting the existence of liquid fuel in the cylinder. Finally, the complete model is assembled and NO formation mechanism is coupled with the model, testing is done allowing to evaluate the concept.

MSI

Marine & Transport Technology

Mechanical, Maritime and Materials Engineering

Advisors/Committee Members: Stapersma, D. (mentor).

Subjects/Keywords: diesel engines

…fronts. Diesel engines, as one of the prime movers in transport industry, has become an active… …diesel engines simulation, and in this particular case combustion modelling. The reason is… …together with the eﬃcient use of fossil fuels is linked to the research on diesel engines, which… …engines. It means the use of techniques to simulate the in-cylinder process in Diesel Master of… …varying engines and combustion processes. For small to medium-sized diesel engines possessing an…

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Galindo Lopez, S. (. (2014). Three-Zone in-cylinder process model for DI diesel engines. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:3eba6c98-1945-4c61-99bb-3af0f2a0ca4a

Chicago Manual of Style (16^th Edition):

Galindo Lopez, S (author). “Three-Zone in-cylinder process model for DI diesel engines.” 2014. Masters Thesis, Delft University of Technology. Accessed February 27, 2021. http://resolver.tudelft.nl/uuid:3eba6c98-1945-4c61-99bb-3af0f2a0ca4a.

MLA Handbook (7^th Edition):

Galindo Lopez, S (author). “Three-Zone in-cylinder process model for DI diesel engines.” 2014. Web. 27 Feb 2021.

Vancouver:

Galindo Lopez S(. Three-Zone in-cylinder process model for DI diesel engines. [Internet] [Masters thesis]. Delft University of Technology; 2014. [cited 2021 Feb 27]. Available from: http://resolver.tudelft.nl/uuid:3eba6c98-1945-4c61-99bb-3af0f2a0ca4a.

Council of Science Editors:

Galindo Lopez S(. Three-Zone in-cylinder process model for DI diesel engines. [Masters Thesis]. Delft University of Technology; 2014. Available from: http://resolver.tudelft.nl/uuid:3eba6c98-1945-4c61-99bb-3af0f2a0ca4a

University of Windsor

16. Yang, Zhenyi. Exhaust Pressure Waves in Diesel Engines and the Impacts on Aftertreatment Sprays.

Degree: MA, Mechanical, Automotive, and Materials Engineering, 2015, University of Windsor

URL: https://scholar.uwindsor.ca/etd/5481

► Aftertreatment devices are commonly used in diesel engine systems for emission control. To ensure the proper function of the aftertreatment devices, it is often… (more)

Subjects/Keywords: Aftertreatment spray; Diesel engines; Exhaust pressure wave

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Yang, Z. (2015). Exhaust Pressure Waves in Diesel Engines and the Impacts on Aftertreatment Sprays. (Masters Thesis). University of Windsor. Retrieved from https://scholar.uwindsor.ca/etd/5481

Chicago Manual of Style (16^th Edition):

Yang, Zhenyi. “Exhaust Pressure Waves in Diesel Engines and the Impacts on Aftertreatment Sprays.” 2015. Masters Thesis, University of Windsor. Accessed February 27, 2021. https://scholar.uwindsor.ca/etd/5481.

MLA Handbook (7^th Edition):

Yang, Zhenyi. “Exhaust Pressure Waves in Diesel Engines and the Impacts on Aftertreatment Sprays.” 2015. Web. 27 Feb 2021.

Vancouver:

Yang Z. Exhaust Pressure Waves in Diesel Engines and the Impacts on Aftertreatment Sprays. [Internet] [Masters thesis]. University of Windsor; 2015. [cited 2021 Feb 27]. Available from: https://scholar.uwindsor.ca/etd/5481.

Council of Science Editors:

Yang Z. Exhaust Pressure Waves in Diesel Engines and the Impacts on Aftertreatment Sprays. [Masters Thesis]. University of Windsor; 2015. Available from: https://scholar.uwindsor.ca/etd/5481

University of New South Wales

17. Dalakoti, Deepak. Direct numerical simulation of lifted flames in diesel engine conditions.

Degree: Mechanical & Manufacturing Engineering, 2019, University of New South Wales

URL: http://handle.unsw.edu.au/1959.4/63289 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:60142/SOURCE02?view=true

► Increasing energy demand and stringent pollution norms necessitate the design of engines with higher efficiency and lower emission levels. A fundamental understanding of combustion in… (more)

▼ Increasing energy demand and stringent pollution norms necessitate the design of engines with higher efficiency and lower emission levels. A fundamental understanding of combustion in diesel engines can enable the design of such engines. Of special interest is the lift-off height, the distance between the injector orifice and the start of the high-temperature reaction zone. The lift-off height controls the amount of mixing between fuel and oxidiser before combustion and hence combustion efficiency and pollutant levels. A comprehensive understanding of the flame stabilisation mechanism, which determines the lift-off height, is thus critical. Arriving at this understanding is not trivial due to the high-temperature and high-pressure conditions present in diesel engines which limit the capabilities of experiments. Consequently, important aspects such as the flame structure and its stabilisation mechanism are not well understood. With the aim to elucidate the flame structure and stabilisation mechanism in diesel engine conditions, direct numerical simulations are performed in this thesis. The ambient conditions are matched to the Engine Combustion Network’s Spray A flame. A canonical configuration of two-dimensional laminar lifted flame is considered first. The response of the flames to inlet velocity and scalar dissipation rate is studied. The flames transition from attached, to lifted propagation stabilised to lifted ignition stabilised upon increasing the inlet velocity. A complex multibrachial flame structure with up to five branches is observed. The propagation stabilised and ignition stabilised flames exhibit characteristically different structure, transport budget and displacement speeds. These observations are then employed to identify the stabilisation mechanism of a three-dimensional spatially developing turbulent round jet flame. The turbulent flame structure, transport budget and the displacement speed at the flame base closely resemble the characteristics of the two-dimensional propagating laminar flames indicating that the turbulent flame is stabilised by flame propagation. The DNS data are then utilised to a priori assess the chemistry tabulation combustion models, important design tools used in industry. Results show that these models give good performance in a priori comparison with the DNS data when the dimension and the choice of the control variables are appropriately considered. Advisors/Committee Members: Hawkes, Evatt, Mechanical & Manufacturing Engineering, Faculty of Engineering, UNSW, Wehrfritz, Armin, Mechanical & Manufacturing Engineering, Faculty of Engineering, UNSW.

Subjects/Keywords: Flame stabilisation; Diesel engines; Spray A; Ignition

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Dalakoti, D. (2019). Direct numerical simulation of lifted flames in diesel engine conditions. (Doctoral Dissertation). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/63289 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:60142/SOURCE02?view=true

Chicago Manual of Style (16^th Edition):

Dalakoti, Deepak. “Direct numerical simulation of lifted flames in diesel engine conditions.” 2019. Doctoral Dissertation, University of New South Wales. Accessed February 27, 2021. http://handle.unsw.edu.au/1959.4/63289 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:60142/SOURCE02?view=true.

MLA Handbook (7^th Edition):

Dalakoti, Deepak. “Direct numerical simulation of lifted flames in diesel engine conditions.” 2019. Web. 27 Feb 2021.

Vancouver:

Dalakoti D. Direct numerical simulation of lifted flames in diesel engine conditions. [Internet] [Doctoral dissertation]. University of New South Wales; 2019. [cited 2021 Feb 27]. Available from: http://handle.unsw.edu.au/1959.4/63289 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:60142/SOURCE02?view=true.

Council of Science Editors:

Dalakoti D. Direct numerical simulation of lifted flames in diesel engine conditions. [Doctoral Dissertation]. University of New South Wales; 2019. Available from: http://handle.unsw.edu.au/1959.4/63289 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:60142/SOURCE02?view=true

Universidade Estadual de Campinas

18. Iskandar, Marco Antonio. Análise e projeto de um sistema de controle de arrefecimento de um motor Diesel, visando à redução das emissões e consumo de combustível: Analysis and project for a control system of a diesel.

Degree: 2011, Universidade Estadual de Campinas

URL: http://repositorio.unicamp.br/jspui/handle/REPOSIP/264902

► Abstract: The diesel engine technology has been driven by increasingly stringent laws. To comply with these laws the emissions control systems are rapidly developing in… (more)

Subjects/Keywords: Controle de temperatura; Motor diesel; System Temperature Coolant Control; Diesel Engines

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Iskandar, M. A. (2011). Análise e projeto de um sistema de controle de arrefecimento de um motor Diesel, visando à redução das emissões e consumo de combustível: Analysis and project for a control system of a diesel. (Thesis). Universidade Estadual de Campinas. Retrieved from http://repositorio.unicamp.br/jspui/handle/REPOSIP/264902

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Iskandar, Marco Antonio. “Análise e projeto de um sistema de controle de arrefecimento de um motor Diesel, visando à redução das emissões e consumo de combustível: Analysis and project for a control system of a diesel.” 2011. Thesis, Universidade Estadual de Campinas. Accessed February 27, 2021. http://repositorio.unicamp.br/jspui/handle/REPOSIP/264902.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Iskandar, Marco Antonio. “Análise e projeto de um sistema de controle de arrefecimento de um motor Diesel, visando à redução das emissões e consumo de combustível: Analysis and project for a control system of a diesel.” 2011. Web. 27 Feb 2021.

Vancouver:

Iskandar MA. Análise e projeto de um sistema de controle de arrefecimento de um motor Diesel, visando à redução das emissões e consumo de combustível: Analysis and project for a control system of a diesel. [Internet] [Thesis]. Universidade Estadual de Campinas; 2011. [cited 2021 Feb 27]. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/264902.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Iskandar MA. Análise e projeto de um sistema de controle de arrefecimento de um motor Diesel, visando à redução das emissões e consumo de combustível: Analysis and project for a control system of a diesel. [Thesis]. Universidade Estadual de Campinas; 2011. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/264902

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Texas A&M University

19. McKeathen, Benjamin Jack. Diesel Fuel Cetane Number Effects on Engine Efficiency and Emissions.

Degree: MS, Mechanical Engineering, 2018, Texas A&M University

URL: http://hdl.handle.net/1969.1/173347

► Diesel engine combustion is heavily impacted by the chemical and physical properties of the fuel being used. Fuel composition plays a role in the in-cylinder… (more)

Subjects/Keywords: Diesel Engines; Diesel; Cetane; Biodiesel; Gas-to-Liquids; Combustion; Emissions

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

McKeathen, B. J. (2018). Diesel Fuel Cetane Number Effects on Engine Efficiency and Emissions. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/173347

Chicago Manual of Style (16^th Edition):

McKeathen, Benjamin Jack. “Diesel Fuel Cetane Number Effects on Engine Efficiency and Emissions.” 2018. Masters Thesis, Texas A&M University. Accessed February 27, 2021. http://hdl.handle.net/1969.1/173347.

MLA Handbook (7^th Edition):

McKeathen, Benjamin Jack. “Diesel Fuel Cetane Number Effects on Engine Efficiency and Emissions.” 2018. Web. 27 Feb 2021.

Vancouver:

McKeathen BJ. Diesel Fuel Cetane Number Effects on Engine Efficiency and Emissions. [Internet] [Masters thesis]. Texas A&M University; 2018. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/1969.1/173347.

Council of Science Editors:

McKeathen BJ. Diesel Fuel Cetane Number Effects on Engine Efficiency and Emissions. [Masters Thesis]. Texas A&M University; 2018. Available from: http://hdl.handle.net/1969.1/173347

University of Manchester

20. Moore, David John. Condition monitoring of diesel engines.

Degree: PhD, 2013, University of Manchester

URL: https://www.research.manchester.ac.uk/portal/en/theses/condition-monitoring-of-diesel-engines(629ec6ef-d54b-449a-90c1-32ac0eee8bcf).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.607079

► Reliability of emergency Diesel generator systems, or indeed any Diesel engines in a wide range of fields is critical. Traditional maintenance procedures for these engines… (more)

Subjects/Keywords: 621.43; Condition Monitoring; Diesel Engines; Acoustics; Faults; Marine Diesel; Ruston

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Moore, D. J. (2013). Condition monitoring of diesel engines. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/condition-monitoring-of-diesel-engines(629ec6ef-d54b-449a-90c1-32ac0eee8bcf).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.607079

Chicago Manual of Style (16^th Edition):

Moore, David John. “Condition monitoring of diesel engines.” 2013. Doctoral Dissertation, University of Manchester. Accessed February 27, 2021. https://www.research.manchester.ac.uk/portal/en/theses/condition-monitoring-of-diesel-engines(629ec6ef-d54b-449a-90c1-32ac0eee8bcf).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.607079.

MLA Handbook (7^th Edition):

Moore, David John. “Condition monitoring of diesel engines.” 2013. Web. 27 Feb 2021.

Vancouver:

Moore DJ. Condition monitoring of diesel engines. [Internet] [Doctoral dissertation]. University of Manchester; 2013. [cited 2021 Feb 27]. Available from: https://www.research.manchester.ac.uk/portal/en/theses/condition-monitoring-of-diesel-engines(629ec6ef-d54b-449a-90c1-32ac0eee8bcf).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.607079.

Council of Science Editors:

Moore DJ. Condition monitoring of diesel engines. [Doctoral Dissertation]. University of Manchester; 2013. Available from: https://www.research.manchester.ac.uk/portal/en/theses/condition-monitoring-of-diesel-engines(629ec6ef-d54b-449a-90c1-32ac0eee8bcf).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.607079

21. Trimby, Stuart. Engine cylinder pressure reconstruction using crank kinematics, block vibrations, and time-delay neural networks.

Degree: PhD, 2016, University of Sussex

URL: http://sro.sussex.ac.uk/id/eprint/61201/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.687096

► Time-delay feed-forward Artificial Neural Networks are examined for gasoline engine cylinder pressure reconstruction using both measured crank kinematics obtained from a shaft encoder, and measured… (more)

▼ Time-delay feed-forward Artificial Neural Networks are examined for gasoline engine cylinder pressure reconstruction using both measured crank kinematics obtained from a shaft encoder, and measured engine cylinder block vibrations obtained from a production knock sensor. Initially, the study focuses on the information content associated with measured data, which is considered to be of equal importance to the particular network architecture and the training methodology. Several hypotheses are constructed, which when tested, reveal the influence of the data information content on the reconstruction potential and limitations. These hypotheses are tested on real data from a 3-cylinder (DISI) engine. Three distinct ideas emerge through this testing process, which are combined to produce a single pressure reconstruction methodology. Reconstruction results obtained via this methodology, applied to crank kinematics associated with steady-state engine operation, show a marked improvement over previously published reconstruction accuracy. Moreover, in steady-state engine operation, the application of this methodology to acceleration measurements of cylinder block vibration, obtained from a knock sensor, show very significant improvements over previous attempts. But the direct application of this same reconstruction methodology to transient engine operation, proves to be problematic. However, a novel generalisation of the approach in the form of a time-dependent feed-forward neural network is proposed and the required adaptation made to the use of the Levenberg-Marquardt training algorithm. This time-dependent approach has been tested under limited transient conditions and shown in the thesis to give good results, therefore offering considerable potential for use with real engine operation. Overall, the thesis shows that by careful processing of measured engine data, standard neural network architectures and standard training algorithms can be used to reconstruct engine cylinder pressure.

Subjects/Keywords: 621.43; TJ0751 Miscellaneous motors and engines Including gas; gasoline; diesel engines

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Trimby, S. (2016). Engine cylinder pressure reconstruction using crank kinematics, block vibrations, and time-delay neural networks. (Doctoral Dissertation). University of Sussex. Retrieved from http://sro.sussex.ac.uk/id/eprint/61201/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.687096

Chicago Manual of Style (16^th Edition):

Trimby, Stuart. “Engine cylinder pressure reconstruction using crank kinematics, block vibrations, and time-delay neural networks.” 2016. Doctoral Dissertation, University of Sussex. Accessed February 27, 2021. http://sro.sussex.ac.uk/id/eprint/61201/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.687096.

MLA Handbook (7^th Edition):

Trimby, Stuart. “Engine cylinder pressure reconstruction using crank kinematics, block vibrations, and time-delay neural networks.” 2016. Web. 27 Feb 2021.

Vancouver:

Trimby S. Engine cylinder pressure reconstruction using crank kinematics, block vibrations, and time-delay neural networks. [Internet] [Doctoral dissertation]. University of Sussex; 2016. [cited 2021 Feb 27]. Available from: http://sro.sussex.ac.uk/id/eprint/61201/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.687096.

Council of Science Editors:

Trimby S. Engine cylinder pressure reconstruction using crank kinematics, block vibrations, and time-delay neural networks. [Doctoral Dissertation]. University of Sussex; 2016. Available from: http://sro.sussex.ac.uk/id/eprint/61201/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.687096

22. Mobasheri, Raouf. Investigations of advanced injection and combustion strategies on DI diesel engine performance and emissions.

Degree: PhD, 2012, University of Sussex

URL: http://sro.sussex.ac.uk/id/eprint/43294/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.561265

► The main driving force behind this research was the need for cleaner and more efficient engines to meet the ever-increasing demands on the modern automobile's… (more)

▼ The main driving force behind this research was the need for cleaner and more efficient engines to meet the ever-increasing demands on the modern automobile's emissions. In recent years different studies have been carried out to analyze the combined effects of high-pressure injection, boost pressure, multiple injections, included spray angle and combustion chamber geometry. Though considerable research has shown these technologies can meet the low emission regulations, the careful optimization of the engine operating conditions is still required in order to get the full benefit of the different strategies. With these issues as motivation, the first important objective of this study was to gain a detailed understanding of the mechanisms through which fuel injection interacts with other engine parameters and influences diesel combustion and emissions, and hence to attempt to generalize the adoption of multiple injection strategies with regards to improving diesel engine performance. For this purpose, a modified parameter called “Homogeneity Factor of in-cylinder charge” (HF) was introduced and proposed as a new measure in combustion theory to analyze the combustion characteristics and air-fuel mixing process of diesel engines in more detail. The second part of this research builds upon a detail investigation on the included spray cone angle concept and explores further their use in conjunction with multiple-injection strategies in diesel engines. In addition, an investigation was performed in third phase of this research to analyze the effects of piston geometry on combustion, performance and exhaust emission characteristics. The results showed that employing a post-injection combined with a pilot injection results in reduced soot formation from diffusion combustion and enhances the soot oxidation process during the expansion stroke, resulting in decreased soot emissions, while the NOx concentration is maintained in low levels. It was also found that spray targeting is very effective for controlling the in-cylinder mixture distributions especially when it accompanied with advanced injection strategies. Moreover, the results confirmed that a narrower width of piston bowl has a higher unburned fuel air mixture region and hence results in higher soot emissions but with slightly larger piston surface area the optimum operating point could be obtained.

Subjects/Keywords: 620; TJ0751 Miscellaneous motors and engines Including gas, gasoline, diesel engines

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Mobasheri, R. (2012). Investigations of advanced injection and combustion strategies on DI diesel engine performance and emissions. (Doctoral Dissertation). University of Sussex. Retrieved from http://sro.sussex.ac.uk/id/eprint/43294/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.561265

Chicago Manual of Style (16^th Edition):

Mobasheri, Raouf. “Investigations of advanced injection and combustion strategies on DI diesel engine performance and emissions.” 2012. Doctoral Dissertation, University of Sussex. Accessed February 27, 2021. http://sro.sussex.ac.uk/id/eprint/43294/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.561265.

MLA Handbook (7^th Edition):

Mobasheri, Raouf. “Investigations of advanced injection and combustion strategies on DI diesel engine performance and emissions.” 2012. Web. 27 Feb 2021.

Vancouver:

Mobasheri R. Investigations of advanced injection and combustion strategies on DI diesel engine performance and emissions. [Internet] [Doctoral dissertation]. University of Sussex; 2012. [cited 2021 Feb 27]. Available from: http://sro.sussex.ac.uk/id/eprint/43294/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.561265.

Council of Science Editors:

Mobasheri R. Investigations of advanced injection and combustion strategies on DI diesel engine performance and emissions. [Doctoral Dissertation]. University of Sussex; 2012. Available from: http://sro.sussex.ac.uk/id/eprint/43294/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.561265

23. Dimitriou, Pavlos. Air-fuel homogeneity effects on direct injection diesel engine performance emission.

Degree: PhD, 2015, University of Sussex

URL: http://sro.sussex.ac.uk/id/eprint/54280/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.647953

► The temporal and spatial distribution of fuel in cylinders is a key factor affecting the combustion characteristics and emission generation of a DI diesel engine.… (more)

Subjects/Keywords: 620; TJ0751 Miscellaneous motors and engines Including gas; gasoline; diesel engines

11 more images…

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Dimitriou, P. (2015). Air-fuel homogeneity effects on direct injection diesel engine performance emission. (Doctoral Dissertation). University of Sussex. Retrieved from http://sro.sussex.ac.uk/id/eprint/54280/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.647953

Chicago Manual of Style (16^th Edition):

Dimitriou, Pavlos. “Air-fuel homogeneity effects on direct injection diesel engine performance emission.” 2015. Doctoral Dissertation, University of Sussex. Accessed February 27, 2021. http://sro.sussex.ac.uk/id/eprint/54280/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.647953.

MLA Handbook (7^th Edition):

Dimitriou, Pavlos. “Air-fuel homogeneity effects on direct injection diesel engine performance emission.” 2015. Web. 27 Feb 2021.

Vancouver:

Dimitriou P. Air-fuel homogeneity effects on direct injection diesel engine performance emission. [Internet] [Doctoral dissertation]. University of Sussex; 2015. [cited 2021 Feb 27]. Available from: http://sro.sussex.ac.uk/id/eprint/54280/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.647953.

Council of Science Editors:

Dimitriou P. Air-fuel homogeneity effects on direct injection diesel engine performance emission. [Doctoral Dissertation]. University of Sussex; 2015. Available from: http://sro.sussex.ac.uk/id/eprint/54280/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.647953

24. Cheng, Li. Transient modelling of a diesel engine and air-path control.

Degree: PhD, 2015, University of Sussex

URL: http://sro.sussex.ac.uk/id/eprint/55340/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.658954

► Due to the inherent nonlinearity of the diesel engine, real-time control of the variable geometry turbocharger (VGT) and exhaust gas recirculation (EGR) valve still remains… (more)

Subjects/Keywords: 620; TJ0751 Miscellaneous motors and engines Including gas; gasoline; diesel engines

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Cheng, L. (2015). Transient modelling of a diesel engine and air-path control. (Doctoral Dissertation). University of Sussex. Retrieved from http://sro.sussex.ac.uk/id/eprint/55340/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.658954

Chicago Manual of Style (16^th Edition):

Cheng, Li. “Transient modelling of a diesel engine and air-path control.” 2015. Doctoral Dissertation, University of Sussex. Accessed February 27, 2021. http://sro.sussex.ac.uk/id/eprint/55340/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.658954.

MLA Handbook (7^th Edition):

Cheng, Li. “Transient modelling of a diesel engine and air-path control.” 2015. Web. 27 Feb 2021.

Vancouver:

Cheng L. Transient modelling of a diesel engine and air-path control. [Internet] [Doctoral dissertation]. University of Sussex; 2015. [cited 2021 Feb 27]. Available from: http://sro.sussex.ac.uk/id/eprint/55340/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.658954.

Council of Science Editors:

Cheng L. Transient modelling of a diesel engine and air-path control. [Doctoral Dissertation]. University of Sussex; 2015. Available from: http://sro.sussex.ac.uk/id/eprint/55340/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.658954

25. Bennett, Colin. Reconstruction of gasoline engine in-cylinder pressures using recurrent neural networks.

Degree: PhD, 2014, University of Sussex

URL: http://sro.sussex.ac.uk/id/eprint/48644/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.606035

► Knowledge of the pressure inside the combustion chamber of a gasoline engine would provide very useful information regarding the quality and consistency of combustion and… (more)

▼ Knowledge of the pressure inside the combustion chamber of a gasoline engine would provide very useful information regarding the quality and consistency of combustion and allow significant improvements in its control, leading to improved efficiency and refinement. While measurement using incylinder pressure transducers is common in laboratory tests, their use in production engines is very limited due to cost and durability constraints. This thesis seeks to exploit the time series prediction capabilities of recurrent neural networks in order to build an inverse model accepting crankshaft kinematics or cylinder block vibrations as inputs for the reconstruction of in-cylinder pressures. Success in this endeavour would provide information to drive a real time combustion control strategy using only sensors already commonly installed on production engines. A reference data set was acquired from a prototype Ford in-line 3 cylinder direct injected, spark ignited gasoline engine of 1.125 litre swept volume. Data acquired concentrated on low speed (1000-2000 rev/min), low load (10-30 Nm brake torque) test conditions. The experimental work undertaken is described in detail, along with the signal processing requirements to treat the data prior to presentation to a neural network. The primary problem then addressed is the reliable, efficient training of a recurrent neural network to result in an inverse model capable of predicting cylinder pressures from data not seen during the training phase, this unseen data includes examples from speed and load ranges other than those in the training case. The specific recurrent network architecture investigated is the non-linear autoregressive with exogenous inputs (NARX) structure. Teacher forced training is investigated using the reference engine data set before a state of the art recurrent training method (Robust Adaptive Gradient Descent – RAGD) is implemented and the influence of the various parameters surrounding input vectors, network structure and training algorithm are investigated. Optimum parameters for data, structure and training algorithm are identified.

Subjects/Keywords: 620; TJ0751 Miscellaneous motors and engines Including gas; gasoline; diesel engines

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Bennett, C. (2014). Reconstruction of gasoline engine in-cylinder pressures using recurrent neural networks. (Doctoral Dissertation). University of Sussex. Retrieved from http://sro.sussex.ac.uk/id/eprint/48644/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.606035

Chicago Manual of Style (16^th Edition):

Bennett, Colin. “Reconstruction of gasoline engine in-cylinder pressures using recurrent neural networks.” 2014. Doctoral Dissertation, University of Sussex. Accessed February 27, 2021. http://sro.sussex.ac.uk/id/eprint/48644/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.606035.

MLA Handbook (7^th Edition):

Bennett, Colin. “Reconstruction of gasoline engine in-cylinder pressures using recurrent neural networks.” 2014. Web. 27 Feb 2021.

Vancouver:

Bennett C. Reconstruction of gasoline engine in-cylinder pressures using recurrent neural networks. [Internet] [Doctoral dissertation]. University of Sussex; 2014. [cited 2021 Feb 27]. Available from: http://sro.sussex.ac.uk/id/eprint/48644/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.606035.

Council of Science Editors:

Bennett C. Reconstruction of gasoline engine in-cylinder pressures using recurrent neural networks. [Doctoral Dissertation]. University of Sussex; 2014. Available from: http://sro.sussex.ac.uk/id/eprint/48644/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.606035

Texas A&M University

26. Kroeger, Timothy Herbert. Reducing the Emissions and Efficiency Penalties of Low Temperature Combustion through Low Heat Rejection Operation.

Degree: MS, Mechanical Engineering, 2017, Texas A&M University

URL: http://hdl.handle.net/1969.1/173211

► Low temperature combustion (LTC) is popular among diesel engine researchers because it dramatically reduces NOx and smoke emissions. However, LTC is limited by increased CO… (more)

Subjects/Keywords: IC engines; diesel engines; compression ignition; low temperature combustion; advanced combustion; low heat rejection engines

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Kroeger, T. H. (2017). Reducing the Emissions and Efficiency Penalties of Low Temperature Combustion through Low Heat Rejection Operation. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/173211

Chicago Manual of Style (16^th Edition):

Kroeger, Timothy Herbert. “Reducing the Emissions and Efficiency Penalties of Low Temperature Combustion through Low Heat Rejection Operation.” 2017. Masters Thesis, Texas A&M University. Accessed February 27, 2021. http://hdl.handle.net/1969.1/173211.

MLA Handbook (7^th Edition):

Kroeger, Timothy Herbert. “Reducing the Emissions and Efficiency Penalties of Low Temperature Combustion through Low Heat Rejection Operation.” 2017. Web. 27 Feb 2021.

Vancouver:

Kroeger TH. Reducing the Emissions and Efficiency Penalties of Low Temperature Combustion through Low Heat Rejection Operation. [Internet] [Masters thesis]. Texas A&M University; 2017. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/1969.1/173211.

Council of Science Editors:

Kroeger TH. Reducing the Emissions and Efficiency Penalties of Low Temperature Combustion through Low Heat Rejection Operation. [Masters Thesis]. Texas A&M University; 2017. Available from: http://hdl.handle.net/1969.1/173211

Indian Institute of Science

27. Pandey, Sunil Kumar. Exploration And Assessment of HCCI Strategies for a Multi-Cylinder Heavy-Duty Diesel Engine.

Degree: PhD, Faculty of Engineering, 2017, Indian Institute of Science

URL: http://etd.iisc.ac.in/handle/2005/2720

► Homogeneous Charge Compression Ignition (HCCI) combustion is an alternative combustion mode in which the fuel is homogeneously mixed with air and is auto-ignited by compression.… (more)

▼ Homogeneous Charge Compression Ignition (HCCI) combustion is an alternative combustion mode in which the fuel is homogeneously mixed with air and is auto-ignited by compression. Due to charge homogeneity, this mode is characterized by low equivalence ratios and temperatures giving simultaneously low nitric oxide (NOx) and soot in diesel engines. The conventional problem of NOx-soot trade-off is avoided in this mode due to absence of diffusion combustion. This mode can be employed at part load conditions while maintaining conventional combustion at high load thus minimizing regulatory cycle emissions and reducing cost of after-treatment systems. The present study focuses on achieving this mode in a turbocharged, common rail, direct injection, four-cylinder, heavy duty diesel engine. Specifically, the work involves a combination of three-dimensional CFD simulations and experiments on this engine to assess both traditional and novel strategies related to fuel injection. The first phase of the work involved a quasi-dimensional simulation of the engine to assess potential of achieving HCCI. This was done using a zero-dimensional, single-zone HCCI combustion model with n-heptane skeletal chemistry along with a one-dimensional model of intake and exhaust systems. The feasibility of operation with realistic knock values with high EGR rate of 60% was observed. The second aspect of the work involved three-dimensional CFD simulations of the in-cylinder process with wall film prediction to evaluate injection strategies associated with Early Direct Injection (EDI). The extended Coherent Flame Model-3Zone (ECFM-3Z) was employed for combustion simulation of conventional CI and EDI, and was validated with experimental in-cylinder pressure data from the engine. A new Uniformity Index (UI) parameter was defined to assess charge homogeneity. Results showed significant in-homogeneity and presence of wall film for EDI. Simulations were conducted to assess improvement of charge homogeneity by several strategies; narrow spray cone angle, injection timing, multiple injections, intake air heating, Port Fuel Injection (PFI) as well as combination of PFI and EDI. The maximum UI achieved by EDI was 0.78. The PFI strategy could achieve UI of 0.95; however, up to 50% of fuel remained trapped in the port after valve closure. This indicated that except EDI, none of the above-mentioned strategies could help achieve the benefits of the HCCI mode. The third part of the work involved engine experimentation to assess the EDI strategy. This strategy produced lower soot than that of conventional CI combustion with very short combustion duration, but led to high knock and NOx which is attributed to pool fire burning phenomenon of the wall film, as confirmed by CFD. An Optimized EDI (OptimEDI) strategy was then developed based on results of CFD and Design of Experiments. The Optim EDI consisted of triple injections with split ratio of 41%-45%-14% and advancing the first injection. This strategy gave 20% NOx and soot reduction over the conventional CI… Advisors/Committee Members: Ravikrishna, R V (advisor).

Subjects/Keywords: Homogeneous Charge Compression Ignition Engines (HCCI); Low Temperature Combustion; Multi-Cylinder Heavy-Duty Diesel Engines; Diesel Motor; Diesel Engines; Early Direct Injection; Air-Assisted Injection; Combustion; Diesel Homogeneous Charge Compression Ignition; Diesel Fuels; Diesel-Fueled Engines; Fuel Injection; Internal Combustion Engines; Computational Fluid Dynamics; Mechanical Engineering

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Pandey, S. K. (2017). Exploration And Assessment of HCCI Strategies for a Multi-Cylinder Heavy-Duty Diesel Engine. (Doctoral Dissertation). Indian Institute of Science. Retrieved from http://etd.iisc.ac.in/handle/2005/2720

Chicago Manual of Style (16^th Edition):

Pandey, Sunil Kumar. “Exploration And Assessment of HCCI Strategies for a Multi-Cylinder Heavy-Duty Diesel Engine.” 2017. Doctoral Dissertation, Indian Institute of Science. Accessed February 27, 2021. http://etd.iisc.ac.in/handle/2005/2720.

MLA Handbook (7^th Edition):

Pandey, Sunil Kumar. “Exploration And Assessment of HCCI Strategies for a Multi-Cylinder Heavy-Duty Diesel Engine.” 2017. Web. 27 Feb 2021.

Vancouver:

Pandey SK. Exploration And Assessment of HCCI Strategies for a Multi-Cylinder Heavy-Duty Diesel Engine. [Internet] [Doctoral dissertation]. Indian Institute of Science; 2017. [cited 2021 Feb 27]. Available from: http://etd.iisc.ac.in/handle/2005/2720.

Council of Science Editors:

Pandey SK. Exploration And Assessment of HCCI Strategies for a Multi-Cylinder Heavy-Duty Diesel Engine. [Doctoral Dissertation]. Indian Institute of Science; 2017. Available from: http://etd.iisc.ac.in/handle/2005/2720

Universidade do Rio Grande do Sul

28. Martins, Ruth Renati Ractz. Comparação das propriedades mecânicas e de fadiga entre ferro fundido vermicular e cinzento utilizados em blocos de motor diesel.

Degree: 2012, Universidade do Rio Grande do Sul

URL: http://hdl.handle.net/10183/61068

►

A crescente busca por novos mercados, redução de custos e atendimento a legislação incentivam estudos e pesquisas no aperfeiçoamento dos materiais, processos e produtos. Uma… (more)

▼

A crescente busca por novos mercados, redução de custos e atendimento a legislação incentivam estudos e pesquisas no aperfeiçoamento dos materiais, processos e produtos. Uma vez que o bloco do motor é o componente mais importante, e que agrega maior peso e volume no motor, o bloco tem sido alvo de pesquisas na busca de motores mais eficientes. O desenvolvimento do material tradicionalmente utilizado para a fabricação de blocos de motores Diesel, o ferro fundido cinzento, alcançou seu limite. Neste contexto, o ferro fundido vermicular ou Compacted Graphite Iron (CGI) se apresenta como um substituto para tal aplicação com características de condutividade térmica e amortecimento próximas ao do ferro fundido cinzento, porém, com propriedades mecânicas superiores, possibilitando um redução do peso do motor e, consequentemente, economia de combustível, redução da emissão de poluentes (CO2, NOx e particulados) além do nível de ruído. Neste estudo foram determinadas, analisadas e comparadas as propriedades mecânicas e de fadiga do ferro fundido vermicular em relação ao principal material utilizado atualmente em blocos de motores Diesel: ferro fundido cinzento. Os experimentos foram realizados através de ensaios a partir de corpos de prova retirados de blocos de motores recolhidos aleatoriamente da produção, visando determinar às propriedades mecânicas e de fadiga baseado na metodologia da mecânica da fratura. As superfícies de fratura dos ensaios foram analisadas em microscópio eletrônico de varredura (MEV) a fim de caracterizar os micromecanismos de fratura. Resultados dos ensaios realizados evidenciaram as vantagens da utilização de ferro fundido vermicular quando comparado ao cinzento, pois apresentou resultados superiores em todos os ensaios mecânicos e taxa de crescimento de trinca de fadiga uma ordem grandeza menor. Através da análise fractográfica foi possível perceber a influência da morfologia da grafita no efeito concentrador de tensões.

The growing search for new markets, cost reduction, adding value to the product and making products according to the legislation for emissions control have consequently increased studies and research to find improvements in materials, process and products. Considered one of the most important and the heaviest component of the engine, the crankcase has been the main target of the search for more efficient engines. Currently the gray cast iron is the material traditionally used in the fabrication of Diesel engine crankcases, however it has reached its strength limit. In this context, the compacted graphite iron (CGI) comes as an alternative for such applications, with characteristics such as thermal conductivity and damping similar to the gray cast iron, but with superior mechanical properties, allowing the manufacturing of lighter crankcases, better performance and reduced environmental pollution by exhaust gases and fluids. This work was to determine, analyze and compare the mechanical and fatigue properties between gray iron and compacted graphite iron used in Diesel engine…

Advisors/Committee Members: Strohaecker, Telmo Roberto.

Subjects/Keywords: Fadiga (Engenharia); Diesel engines; Ferro fundido; Crankcase; Motor diesel; Compacted graphite; Fatigue

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Martins, R. R. R. (2012). Comparação das propriedades mecânicas e de fadiga entre ferro fundido vermicular e cinzento utilizados em blocos de motor diesel. (Thesis). Universidade do Rio Grande do Sul. Retrieved from http://hdl.handle.net/10183/61068

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Martins, Ruth Renati Ractz. “Comparação das propriedades mecânicas e de fadiga entre ferro fundido vermicular e cinzento utilizados em blocos de motor diesel.” 2012. Thesis, Universidade do Rio Grande do Sul. Accessed February 27, 2021. http://hdl.handle.net/10183/61068.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Martins, Ruth Renati Ractz. “Comparação das propriedades mecânicas e de fadiga entre ferro fundido vermicular e cinzento utilizados em blocos de motor diesel.” 2012. Web. 27 Feb 2021.

Vancouver:

Martins RRR. Comparação das propriedades mecânicas e de fadiga entre ferro fundido vermicular e cinzento utilizados em blocos de motor diesel. [Internet] [Thesis]. Universidade do Rio Grande do Sul; 2012. [cited 2021 Feb 27]. Available from: http://hdl.handle.net/10183/61068.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Martins RRR. Comparação das propriedades mecânicas e de fadiga entre ferro fundido vermicular e cinzento utilizados em blocos de motor diesel. [Thesis]. Universidade do Rio Grande do Sul; 2012. Available from: http://hdl.handle.net/10183/61068

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

29. Regan, Nicholas J. The characterisation of liquid sprays injected from circular and non-circular nozzles into high speed subsonic cross-airstreams.

Degree: PhD, 2012, University of Sussex

URL: http://sro.sussex.ac.uk/id/eprint/38645/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.554471

► This study was motivated by a need to better understand the sprays that can develop when oil leaks occur in gas turbine engines. Current gas… (more)

▼ This study was motivated by a need to better understand the sprays that can develop when oil leaks occur in gas turbine engines. Current gas turbine engines incorporate an extensive network of oil distribution pipes which deliver lubrication oil to bearings and seals at various locations across the engine. Parts of the oil pipe network are situated in hot, high pressure engine cavities where an oil leak, from a fractured pipe or leaking seal, could ignite and lead to an engine fire. Oil leaks in gas turbine engines create liquid injection in cross-airstream situations, a subject which has been widely studied for combustion systems. However, previous studies are almost exclusively based on circular nozzle geometries. For a fractured oil pipe, the geometry through which the oil leaks approximates to a slot shape rather than a circular nozzle. Sprays which develop in cross-airstreams are most sensitive to the parameters of Weber number (Weg eq) and momentum flux ratio (q). A wide range for these parameters are considered to be possible in engine oil leak scenarios because of the variety of crack dimensions possible and range of airflow conditions across the different sections of the engine; from zero to in excess of We g eq = 4000 and q = 300 could be possible in extreme cases. The aim of this study was to generate and then characterise sprays in representative conditions. The main focus was the characterisation of the droplets which formed in the sprays, with the key objective of providing validation data for CFD codes. Droplet characterisation was performed using a phase Doppler particle analysis system. High speed video as well as pulsed laser sheet digital imaging were also used in the study to provide insight into upstream features of the spray field. A 0.5 x 5.38 mm slot shaped nozzle geometry was used in two orientations; perpendicular alignment ↓↓⦶ and parallel alignment ↓↓⦶ . Water was injected into a cross-airstream over a twelve point test matrix with momentum flux ratios (q) values within the range of 4 ≳ q ≳ 32 and Weber number (We g eq) values within the range of 300 ≳ We g eq ≳ 1600. The position of the spray was highly dependent on slot nozzle orientation. The spray was considerably further offset from the nozzle injection wall in parallel alignment ↓↓⦶ , compared to the perpendicular alignment ↓↓⦶. However, the centre-line distribution of Arithmetic Mean Diameter (AMD) was similar for both orientations, albeit offset further from the injection wall for the parallel slot nozzle. The underlying structure of droplet size distribution was consistent with results for sprays from circular nozzles. At low liquid injection pressures the sprays produced by the perpendicular aligned slot ↓↓⦶ exhibited impingement, producing large droplets in the near wall region. Where impingement was not present, the data showed that AMD was not significantly influenced by the orientation of the slot nozzle; with all tests generating results in the range of 16 μm ≳ AMD ≳ 80 μm.

Subjects/Keywords: 620; TA0354 Applied fluid mechanics; TJ0751 Miscellaneous motors and engines Including gas; gasoline; diesel engines

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Regan, N. J. (2012). The characterisation of liquid sprays injected from circular and non-circular nozzles into high speed subsonic cross-airstreams. (Doctoral Dissertation). University of Sussex. Retrieved from http://sro.sussex.ac.uk/id/eprint/38645/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.554471

Chicago Manual of Style (16^th Edition):

Regan, Nicholas J. “The characterisation of liquid sprays injected from circular and non-circular nozzles into high speed subsonic cross-airstreams.” 2012. Doctoral Dissertation, University of Sussex. Accessed February 27, 2021. http://sro.sussex.ac.uk/id/eprint/38645/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.554471.

MLA Handbook (7^th Edition):

Regan, Nicholas J. “The characterisation of liquid sprays injected from circular and non-circular nozzles into high speed subsonic cross-airstreams.” 2012. Web. 27 Feb 2021.

Vancouver:

Regan NJ. The characterisation of liquid sprays injected from circular and non-circular nozzles into high speed subsonic cross-airstreams. [Internet] [Doctoral dissertation]. University of Sussex; 2012. [cited 2021 Feb 27]. Available from: http://sro.sussex.ac.uk/id/eprint/38645/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.554471.

Council of Science Editors:

Regan NJ. The characterisation of liquid sprays injected from circular and non-circular nozzles into high speed subsonic cross-airstreams. [Doctoral Dissertation]. University of Sussex; 2012. Available from: http://sro.sussex.ac.uk/id/eprint/38645/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.554471

University of Nottingham

30. Thoo, Wei Jet. A study of the ignition delay characteristics of combustion in a compression ignition engine operating on blended mixtures of diesel and gasoline.

Degree: PhD, 2016, University of Nottingham

URL: http://eprints.nottingham.ac.uk/32843/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.734353

► The interest to study diesel-gasoline fuel mix for CI engine combustion had been motivated by the higher thermal efficiency of CI engine compared to SI… (more)

▼ The interest to study diesel-gasoline fuel mix for CI engine combustion had been motivated by the higher thermal efficiency of CI engine compared to SI engine which gasoline normally runs in and the report of having lower NOx and PM emissions for gasoline combustion in CI engine. The experimental CI engine was unable to run on 100% gasoline but able to run on gasoline blend as high as G80 with default SOI timing setting. 100% gasoline would not run despite it contains only 20% more gasoline than G80 due to its extremely longer ignition delay caused by the exponential increase of gasoline blend’s ID. Engine brake thermal efficiencies of all gasoline blends tested up to G80 were comparable and averaged at 24.2%, 33.8% and 39.8% for engine speed-load conditions of 2000rev/min 2.5bar BMEP, 2000rev/min 5bar BMEP and 2000rev/min 8.5bar BMEP, accordingly. This finding confirmed that gasoline blend could be a new alternative fuel that offers comparable performance to the liquid fuel market for CI engine. In Europe, diesel blended with a small percentage of biodiesel or ethanol has been common to liquid fuel market. The study focused on ID that was closely correlated to NOx and soot formations in engine cylinder instead of NOx and PM emissions at tailpipe. The longer ID of 100% gasoline in relative to diesel could go up to 14CAD resulted in increased proportion of premixed combustion to mixing-controlled combustion at the rate of 40 Joule per CAD increase in ID. This incremental premixed combustion proportion was ideal for low NOx and soot formations in CI engine. ID was able to be discriminated into physical delay, a period dictated by engine speed-load conditions and controlled fuel breakup, fuel vaporisation and fuel-air mixing; and chemical delay, a period dictated by fuel chemical kinetic mechanism and controlled the amount of heat released. This finding gave valuable insight to the fact that proportion of premixed combustion and mixing-controlled combustion were controlled by chemical delay. Zero-dimensional theoretical combustion study with chemical kinetic mechanism confirmed that the exponential increased ID trend of gasoline blends was attributed to chemical delay. Hence a gasoline blend close to 100% gasoline would have very lean premixed combustion and small mixing-combustion which correlated to very low NOx and soot formations in cylinder. In order to understand the NOx and soot formations in cylinder in detail, a 73species reduced chemical kinetic mechanism that could represent gasoline blend combustion in CFD was developed. This reduced chemical kinetic mechanism could be used for future CFD work to understand effect of interactions between physical processes (fuel breakup, fuel vaporisation and fuel-air mixing) and chemical processes (activation of fuel combustion chemistry) on NOx and soot formations in cylinder. This work founded an effective semi-automatic reduction methodology with MATLAB algorithms for developing the 73species CFD-compatible reduced chemical kinetic mechanism of gasoline blends. This…

Subjects/Keywords: 621.43; TJ Mechanical engineering and machinery; TJ751 Internal combustion engines. Diesel engines

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Thoo, W. J. (2016). A study of the ignition delay characteristics of combustion in a compression ignition engine operating on blended mixtures of diesel and gasoline. (Doctoral Dissertation). University of Nottingham. Retrieved from http://eprints.nottingham.ac.uk/32843/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.734353

Chicago Manual of Style (16^th Edition):

Thoo, Wei Jet. “A study of the ignition delay characteristics of combustion in a compression ignition engine operating on blended mixtures of diesel and gasoline.” 2016. Doctoral Dissertation, University of Nottingham. Accessed February 27, 2021. http://eprints.nottingham.ac.uk/32843/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.734353.

MLA Handbook (7^th Edition):

Thoo, Wei Jet. “A study of the ignition delay characteristics of combustion in a compression ignition engine operating on blended mixtures of diesel and gasoline.” 2016. Web. 27 Feb 2021.

Vancouver:

Thoo WJ. A study of the ignition delay characteristics of combustion in a compression ignition engine operating on blended mixtures of diesel and gasoline. [Internet] [Doctoral dissertation]. University of Nottingham; 2016. [cited 2021 Feb 27]. Available from: http://eprints.nottingham.ac.uk/32843/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.734353.

Council of Science Editors:

Thoo WJ. A study of the ignition delay characteristics of combustion in a compression ignition engine operating on blended mixtures of diesel and gasoline. [Doctoral Dissertation]. University of Nottingham; 2016. Available from: http://eprints.nottingham.ac.uk/32843/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.734353

Open Access Theses and Dissertations