subject:(Direct injection)

1. Nagaraja S. Certain investigations on the effect of Compression ratio over the performance And emission characteristics of CI engine with biodiesel blends;.

Degree: Certain investigations on the effect of Compression ratio over the performance And emission characteristics of CI engine with biodiesel blends, 2015, Anna University

URL: http://shodhganga.inflibnet.ac.in/handle/10603/37613

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The day by day increase in the usage of vehicle and the rising newlineenergy needs for the widespread industrial sectors in developing countries of newlinethe… (more)

Subjects/Keywords: Certain investigations; Direct injection

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APA (6^th Edition):

S, N. (2015). Certain investigations on the effect of Compression ratio over the performance And emission characteristics of CI engine with biodiesel blends;. (Thesis). Anna University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/37613

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):

S, Nagaraja. “Certain investigations on the effect of Compression ratio over the performance And emission characteristics of CI engine with biodiesel blends;.” 2015. Thesis, Anna University. Accessed March 05, 2021. http://shodhganga.inflibnet.ac.in/handle/10603/37613.

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

MLA Handbook (7^th Edition):

S, Nagaraja. “Certain investigations on the effect of Compression ratio over the performance And emission characteristics of CI engine with biodiesel blends;.” 2015. Web. 05 Mar 2021.

Vancouver:

S N. Certain investigations on the effect of Compression ratio over the performance And emission characteristics of CI engine with biodiesel blends;. [Internet] [Thesis]. Anna University; 2015. [cited 2021 Mar 05]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/37613.

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

Council of Science Editors:

S N. Certain investigations on the effect of Compression ratio over the performance And emission characteristics of CI engine with biodiesel blends;. [Thesis]. Anna University; 2015. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/37613

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

2. Begleris, Philippos. Three-dimensional flow predictions in motored diesel engines.

Degree: PhD, 1986, Imperial College London

URL: http://hdl.handle.net/10044/1/7870

Subjects/Keywords: 621.43; Direct injection

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APA (6^th Edition):

Begleris, P. (1986). Three-dimensional flow predictions in motored diesel engines. (Doctoral Dissertation). Imperial College London. Retrieved from http://hdl.handle.net/10044/1/7870

Chicago Manual of Style (16^th Edition):

Begleris, Philippos. “Three-dimensional flow predictions in motored diesel engines.” 1986. Doctoral Dissertation, Imperial College London. Accessed March 05, 2021. http://hdl.handle.net/10044/1/7870.

MLA Handbook (7^th Edition):

Begleris, Philippos. “Three-dimensional flow predictions in motored diesel engines.” 1986. Web. 05 Mar 2021.

Vancouver:

Begleris P. Three-dimensional flow predictions in motored diesel engines. [Internet] [Doctoral dissertation]. Imperial College London; 1986. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10044/1/7870.

Council of Science Editors:

Begleris P. Three-dimensional flow predictions in motored diesel engines. [Doctoral Dissertation]. Imperial College London; 1986. Available from: http://hdl.handle.net/10044/1/7870

University of Windsor

3. Fiano, Angela. A model for soot load estimation in a Gasoline Particulate Filter using a Radio Frequency sensor.

Degree: MA, Mechanical, Automotive, and Materials Engineering, 2017, University of Windsor

URL: https://scholar.uwindsor.ca/etd/7257

► Gasoline Direct Injection (GDI) engines represent a promising technology for facing the more and more stringent limits imposed by emission regulations. However, one of the… (more)

Subjects/Keywords: Direct Injection; GPF; Radio Frequency; Soot

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APA (6^th Edition):

Fiano, A. (2017). A model for soot load estimation in a Gasoline Particulate Filter using a Radio Frequency sensor. (Masters Thesis). University of Windsor. Retrieved from https://scholar.uwindsor.ca/etd/7257

Chicago Manual of Style (16^th Edition):

Fiano, Angela. “A model for soot load estimation in a Gasoline Particulate Filter using a Radio Frequency sensor.” 2017. Masters Thesis, University of Windsor. Accessed March 05, 2021. https://scholar.uwindsor.ca/etd/7257.

MLA Handbook (7^th Edition):

Fiano, Angela. “A model for soot load estimation in a Gasoline Particulate Filter using a Radio Frequency sensor.” 2017. Web. 05 Mar 2021.

Vancouver:

Fiano A. A model for soot load estimation in a Gasoline Particulate Filter using a Radio Frequency sensor. [Internet] [Masters thesis]. University of Windsor; 2017. [cited 2021 Mar 05]. Available from: https://scholar.uwindsor.ca/etd/7257.

Council of Science Editors:

Fiano A. A model for soot load estimation in a Gasoline Particulate Filter using a Radio Frequency sensor. [Masters Thesis]. University of Windsor; 2017. Available from: https://scholar.uwindsor.ca/etd/7257

University of New South Wales

4. Zhang, Haoyang. Modelling of stratified charge compression ignition engines.

Degree: Photovoltaics & Renewable Energy Engineering, 2014, University of New South Wales

URL: http://handle.unsw.edu.au/1959.4/53630 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12325/SOURCE02?view=true

► Homogeneous charge compression-ignition (HCCI) engines have been considered to hold potential for next generation internal combustion engines with low emissions and low fuel-consumption. However, some… (more)

▼ Homogeneous charge compression-ignition (HCCI) engines have been considered to hold potential for next generation internal combustion engines with low emissions and low fuel-consumption. However, some technical hurdles, such as low combustion-efficiency at low load and excessive pressure-rise rate (PRR) at high load, significantly challenge its practical application.In this thesis, fundamental studies of fuel ignition response to thermal stratification were first conducted by using direct numerical simulations coupled with a detailed chemistry mechanism. For a two-stage ignition fuel with negative temperature coefficient (NTC) behaviour, dimethyl ether, the auto-ignition regime was found to depend strongly on the initial temperature. Molecular diffusion was found to be negligible in comparison to chemical reaction when the initial temperature fell inside NTC regime; however, once the initial temperature was outside NTC regime, diffusion became relatively more significant. Diffusion was also observed to decrease with an increase of the length-scale. PRR was found to be reduced with thermal stratification, but this was also dependent on the mean temperature.Then, non-reacting multi-dimensional engine modelling was conducted to investigate the effects of fuel direct injection on the resulting mixture distribution. It was found that as the start of injection was retarded, more fuel was concentrated in the central areas of the cylinder, leading to a potential increase of combustion efficiency and potential reduction of carbon monoxide and unburned hydrocarbons, but a potential increase of excessive nitrogen oxides. Droplet-wall interaction and spray-to-spray interaction were observed to play essential roles in fuel distribution. Furthermore, the use of high injection pressure can enhance the mixing, while the use of high swirl ratio and low injection pressure showed negative effects on the global mixing.Finally, reacting engine simulations were carried on to study the effects of thermal stratification on a fully premixed HCCI engine fuelled by ethanol. These studies pointed out many challenges with attempts to model HCCI predictively, owing to strong sensitivities to initial charge temperature and pressure, wall temperatures, residual gas composition, initial turbulence intensity and models for its evolution and wall models. These sensitivities were analysed and used to construct an optimised model that agreed quite well with experimental pressure traces and associated quantities such as the PRR, the indicated mean effective pressure, and the thermal efficiency. Analysis of the optimised model results was used to determine that enhanced thermal stratification demonstrated a significant reduction of the PRR. The degree of the reduction was found to depend on the penetration of thermal stratification into the bulk-gas regions. In addition, turbulence played an important role in the control combustion phasing primarily by altering the distributions of thermal stratification. Advisors/Committee Members: Hawkes, Evatt, Photovoltaics & Renewable Energy Engineering, Faculty of Engineering, UNSW, Kook, Sanghoon, Mechanical & Manufacturing Engineering, Faculty of Engineering, UNSW.

Subjects/Keywords: CFD; HCCI; SCCI; Autoignition; Direct injection

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APA (6^th Edition):

Zhang, H. (2014). Modelling of stratified charge compression ignition engines. (Doctoral Dissertation). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/53630 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12325/SOURCE02?view=true

Chicago Manual of Style (16^th Edition):

Zhang, Haoyang. “Modelling of stratified charge compression ignition engines.” 2014. Doctoral Dissertation, University of New South Wales. Accessed March 05, 2021. http://handle.unsw.edu.au/1959.4/53630 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12325/SOURCE02?view=true.

MLA Handbook (7^th Edition):

Zhang, Haoyang. “Modelling of stratified charge compression ignition engines.” 2014. Web. 05 Mar 2021.

Vancouver:

Zhang H. Modelling of stratified charge compression ignition engines. [Internet] [Doctoral dissertation]. University of New South Wales; 2014. [cited 2021 Mar 05]. Available from: http://handle.unsw.edu.au/1959.4/53630 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12325/SOURCE02?view=true.

Council of Science Editors:

Zhang H. Modelling of stratified charge compression ignition engines. [Doctoral Dissertation]. University of New South Wales; 2014. Available from: http://handle.unsw.edu.au/1959.4/53630 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12325/SOURCE02?view=true

5. Kelleher, Clodagh. Thermal processing techniques for improving protein-enriched beverage production.

Degree: 2019, University College Cork

URL: http://hdl.handle.net/10468/7439

► Growing consumer demand for convenient sources of high quality protein has led to a substantial global market for ready-to-drink, shelf-stable dairy protein beverages. These products… (more)

▼ Growing consumer demand for convenient sources of high quality protein has led to a substantial global market for ready-to-drink, shelf-stable dairy protein beverages. These products have significant technical challenges associated with their manufacture due to the high processing temperatures required to render them microbiologically stable. Issues arise during thermal processing and storage as the high protein content leaves formulations susceptible to protein denaturation and aggregation, development of volatile compounds with associated off-flavours, increased viscosity, and sedimentation. This has driven dairy processors to seek out alternative formulation approaches and thermal processing techniques which can minimise the thermally-induced changes in the product, while still achieving the required shelf life. Relatively few studies have focused on a combined approach of investigating varied protein profiles in protein-enriched beverages with a range of thermal processing techniques. The objective of this research was to investigate the impact of composition and processing parameters on the physical behaviour of high-protein milk beverage systems across a range of thermal treatment systems. A new methodology for assessing the thermal stability, in terms of viscosity, for protein beverage formulations was also developed. Protein profile was shown to affect thermally-induced protein denaturation, with reductions in α-lactalbumin denaturation with an increasing casein proportion. Alterations in preheat treatment temperature significantly affected viscosity in protein systems upon concentration. The application of temperature-dependent viscosity models was demonstrated to be a useful, rapid tool in quantifying differences in product processing stability. Direct heating technology was applied to ESL- and UHT-treated whey protein solutions with a high protein content (4, 6 and 8% protein (w/w)) resulting in reduced protein denaturation, viscosity and less extensive changes to the volatile profile compared to tubular heating. A pilot-scale supersonic steam injection line was designed and integrated into an existing tubular heating plant with commissioning completed on skim milk. This novel heating system provided significantly greater reductions in protein denaturation than direct steam infusion and tubular heating for protein-enriched dairy beverage systems. The thesis provides new insights into interactions between milk proteins during thermal processing which influence the physical and volatile profile stability of protein beverages. The outcomes of the work have applications in such areas as high heat treatment processing of heat-sensitive milk proteins, allowing for minimised whey protein denaturation, reduced viscosity through formulation manipulation, and use of novel thermal technologies. Advisors/Committee Members: O'Mahony, Seamus Anthony, Kelly, Alan, O'Callaghan, Donal J., McCarthy, Noel A., Teagasc.

Subjects/Keywords: Direct steam injection; Direct steam infusion; Protein-enriched beverages; Dairy protein; Supersonic steam injection heating

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APA (6^th Edition):

Kelleher, C. (2019). Thermal processing techniques for improving protein-enriched beverage production. (Thesis). University College Cork. Retrieved from http://hdl.handle.net/10468/7439

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):

Kelleher, Clodagh. “Thermal processing techniques for improving protein-enriched beverage production.” 2019. Thesis, University College Cork. Accessed March 05, 2021. http://hdl.handle.net/10468/7439.

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

MLA Handbook (7^th Edition):

Kelleher, Clodagh. “Thermal processing techniques for improving protein-enriched beverage production.” 2019. Web. 05 Mar 2021.

Vancouver:

Kelleher C. Thermal processing techniques for improving protein-enriched beverage production. [Internet] [Thesis]. University College Cork; 2019. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10468/7439.

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

Council of Science Editors:

Kelleher C. Thermal processing techniques for improving protein-enriched beverage production. [Thesis]. University College Cork; 2019. Available from: http://hdl.handle.net/10468/7439

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

West Virginia University

6. Phillips, John Adam. Investigation of Particle Measurement in Different Dilution Ratios with Gasoline Direct Injection and Port Fuel Injection.

Degree: MS, Mechanical and Aerospace Engineering, 2020, West Virginia University

URL: https://doi.org/10.33915/etd.7815 ; https://researchrepository.wvu.edu/etd/7815

► Ambient air quality has been a concern in the United States since the mid-1900’s, forcing legislations like the Air Pollution Control Act and Clean… (more)

Subjects/Keywords: Gasoline Direct Injection; Particle Measurement; Port Fuel Injection; Automotive Engineering

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APA (6^th Edition):

Phillips, J. A. (2020). Investigation of Particle Measurement in Different Dilution Ratios with Gasoline Direct Injection and Port Fuel Injection. (Thesis). West Virginia University. Retrieved from https://doi.org/10.33915/etd.7815 ; https://researchrepository.wvu.edu/etd/7815

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):

Phillips, John Adam. “Investigation of Particle Measurement in Different Dilution Ratios with Gasoline Direct Injection and Port Fuel Injection.” 2020. Thesis, West Virginia University. Accessed March 05, 2021. https://doi.org/10.33915/etd.7815 ; https://researchrepository.wvu.edu/etd/7815.

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

MLA Handbook (7^th Edition):

Phillips, John Adam. “Investigation of Particle Measurement in Different Dilution Ratios with Gasoline Direct Injection and Port Fuel Injection.” 2020. Web. 05 Mar 2021.

Vancouver:

Phillips JA. Investigation of Particle Measurement in Different Dilution Ratios with Gasoline Direct Injection and Port Fuel Injection. [Internet] [Thesis]. West Virginia University; 2020. [cited 2021 Mar 05]. Available from: https://doi.org/10.33915/etd.7815 ; https://researchrepository.wvu.edu/etd/7815.

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

Council of Science Editors:

Phillips JA. Investigation of Particle Measurement in Different Dilution Ratios with Gasoline Direct Injection and Port Fuel Injection. [Thesis]. West Virginia University; 2020. Available from: https://doi.org/10.33915/etd.7815 ; https://researchrepository.wvu.edu/etd/7815

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

Michigan Technological University

7. Menucci, Tyler. DEVELOPMENT OF BOSCH RATE OF INJECTION MEASUREMENT PROCEDURE AND RESULTS.

Degree: MS, Department of Mechanical Engineering-Engineering Mechanics, 2018, Michigan Technological University

URL: https://digitalcommons.mtu.edu/etdr/605

► Recent developments in internal combustion engine technology have shown that gasoline compression ignition (GCI) combustion modes provide a viable pathway to meet future emission… (more)

▼ Recent developments in internal combustion engine technology have shown that gasoline compression ignition (GCI) combustion modes provide a viable pathway to meet future emission regulations. Lower octane middle distillate gasoline like fuels have also been formulated for GCI combustion applications and have shown similar benefits of improved fuel conversion efficiency and a reduction in particulate matter and nitrogen oxide emissions. As these gasoline like GCI fuels have not been well studied, characterization of their rate of injection (ROI) will be beneficial to supplement injector spray characterization measurements and the development of computational fluid dynamic simulations. A fuel collection method and data processing technique were defined to develop a measurement procedure for making rate of injection measurements with a Bosch type rate of injection (ROI) rig. The measurement procedure was developed to quantify the ROI for both heavy duty (HD) and light duty (LD) injector applications. The HD studies included ROI measurements using an Ultra-Low Sulfur Diesel (ULSD) and a research octane number (RON) 60 gasoline compression ignition (GCI) fuel. Rate of injection measurements for the HD fuels were obtained with an eight-hole high pressure common rail diesel Cummins XPI injector and electronic injection durations were successfully calibrated to provide a desired fuel quantity per injection. Single-hole ROI measurements were also made with a Cummins XPI injector designed to provide one-eighth of the flow of the multi-hole injector. These single-hole ROI measurements were used to supplement injector spray characterization data in an optically accessible combustion vessel. The LD studies characterized ROI measurements of a custom ten-hole Bosch HDEV5 gasoline direct injection (GDI) injector. The LD fuels studied were a premium octane CARB LEV III 10% ethanol (E10) certification gasoline and a RON 70 GCI fuel. These LD studies were conducted to compare the RON 70 GCI fuel’s ROI characteristics to those of the premium octane CARB LEV III E10 certification gasoline. Average trends showed higher rates of injection and total mass per injection for the premium octane E10 cert gasoline and was attributed to the higher density of the fuel. Conclusions were also made that the higher viscosity of the E10 cert gasoline provided longer injector opening delays when compared to the RON 70 GCI fuel. Advisors/Committee Members: Jeffrey Naber.

Subjects/Keywords: rate of injection; gasoline direct injection; injection rate characteristics; Other Mechanical Engineering

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APA (6^th Edition):

Menucci, T. (2018). DEVELOPMENT OF BOSCH RATE OF INJECTION MEASUREMENT PROCEDURE AND RESULTS. (Masters Thesis). Michigan Technological University. Retrieved from https://digitalcommons.mtu.edu/etdr/605

Chicago Manual of Style (16^th Edition):

Menucci, Tyler. “DEVELOPMENT OF BOSCH RATE OF INJECTION MEASUREMENT PROCEDURE AND RESULTS.” 2018. Masters Thesis, Michigan Technological University. Accessed March 05, 2021. https://digitalcommons.mtu.edu/etdr/605.

MLA Handbook (7^th Edition):

Menucci, Tyler. “DEVELOPMENT OF BOSCH RATE OF INJECTION MEASUREMENT PROCEDURE AND RESULTS.” 2018. Web. 05 Mar 2021.

Vancouver:

Menucci T. DEVELOPMENT OF BOSCH RATE OF INJECTION MEASUREMENT PROCEDURE AND RESULTS. [Internet] [Masters thesis]. Michigan Technological University; 2018. [cited 2021 Mar 05]. Available from: https://digitalcommons.mtu.edu/etdr/605.

Council of Science Editors:

Menucci T. DEVELOPMENT OF BOSCH RATE OF INJECTION MEASUREMENT PROCEDURE AND RESULTS. [Masters Thesis]. Michigan Technological University; 2018. Available from: https://digitalcommons.mtu.edu/etdr/605

University of Iowa

8. Burkhalter, Matthew W. Atomization and mixing performance of swirl-venturi lean direct injection.

Degree: MS, Mechanical Engineering, 2014, University of Iowa

URL: https://ir.uiowa.edu/etd/1433

► This paper investigated the effects of swirl number and momentum ratio on the atomization and mixing performance of Swirl-Venturi Lean Direct Injection technology. Mie… (more)

Subjects/Keywords: publicabstract; Atomization; Fuel injection; Lean Direct Injection; Mie scattering; Mixing; Sprays; Mechanical Engineering

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APA (6^th Edition):

Burkhalter, M. W. (2014). Atomization and mixing performance of swirl-venturi lean direct injection. (Masters Thesis). University of Iowa. Retrieved from https://ir.uiowa.edu/etd/1433

Chicago Manual of Style (16^th Edition):

Burkhalter, Matthew W. “Atomization and mixing performance of swirl-venturi lean direct injection.” 2014. Masters Thesis, University of Iowa. Accessed March 05, 2021. https://ir.uiowa.edu/etd/1433.

MLA Handbook (7^th Edition):

Burkhalter, Matthew W. “Atomization and mixing performance of swirl-venturi lean direct injection.” 2014. Web. 05 Mar 2021.

Vancouver:

Burkhalter MW. Atomization and mixing performance of swirl-venturi lean direct injection. [Internet] [Masters thesis]. University of Iowa; 2014. [cited 2021 Mar 05]. Available from: https://ir.uiowa.edu/etd/1433.

Council of Science Editors:

Burkhalter MW. Atomization and mixing performance of swirl-venturi lean direct injection. [Masters Thesis]. University of Iowa; 2014. Available from: https://ir.uiowa.edu/etd/1433

9. Pellegrino, Federico. System Simulation of Combustion in Direct-Injection Spark-Ignition Engines : Simulation système de la combustion dans les moteurs à allumage commandé à injection directe.

Degree: Docteur es, Combustion, 2019, Université Paris-Saclay (ComUE)

URL: http://www.theses.fr/2019SACLC075

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La présence de contraintes de plus en plus strictes sur les émissions de polluants on poussé les contruteurs vers l'injection directe essence (IDE), afin d'améliorer… (more)

▼

La présence de contraintes de plus en plus strictes sur les émissions de polluants on poussé les contruteurs vers l'injection directe essence (IDE), afin d'améliorer les performances et réduire la consommation de carburant et les émissions des moteurs à combustion interne. Par conséquent, de nouveaux défis sont introduits en termes d'optimisation de la combustion, en raison d'une plus complexe phénomenologie tandis que les modéles système demande des paramètres de calibration supplémentaires.Cette thèse présente le développement et la validation d'un modèle zéro-dimensionnel (0D) de combustion en IDE pour application en simulation système. Le modèle proposé détaille la physique de l'atomisation, et évaporation des gouttes, de la préparation du mélange air/carburant, de la propagation de flamme dans un mélange non-homogène ainsi que l'intéraction entre ces phénomènes.La phase liquide est discretisés en paquets groupant des gouttes de la même taille.Un modèle d'atomisation empirique basé sur la vitesse d'injection, les propriétés du carburant et les conditions thermodynamiques fournit les diamètres initiaux. Un modèle Lagrangien détaillant une dynamique de trainée/inértie, échange thermique et convection forcée décrit la pénétration liquide et l'evaporation des paquets. La formation du mélange air/carburant est décrite avec une PDF qui discretise la charge en un mécanisme de classes intéragissant les unes avec les autres et avec les paquets de gouttes. La propagation de flamme prend en compte les effets de l'hétérogéneité du mélange sur la vitesse de flamme et la formation des polluants.Le modèle proposé a été implémenté dans la plateforme Simcenter Amesim, dédiée á la modélisation de systémes multi-physiques, et intégrée dans le modèle de combustion essence CFM1D, de la librairie IFP-Engine.Des approche de modélisation de l'evaporation de carburant, de la dynamique de spray et de la formation du mélange, inspirés de la literature sur les moteurs Diesel, ont été adaptés aux conditions IDE.Le modèle a initialement été validé sur des mesures et des simulations RANS 3D réalisées avec le code IFP-C3D, d'une bombe d'injection à volume constant.Un vortex de tumble, dans un premier temps, et des variations rapides du voulume de la chambre ensuite, ont été ajoutés aux expériments numériques afin d'évaluer la réponse du modèle à l'aérodynamique dans la chambre de combustion et à des conditions thermodynamiques variables, en termes d'évaporation, développement du spray et distribution de la richesse. Des simulations d'injections dans un moteur entraîné,dont les résultats ont été comparés avec des mesures et des calculs CDF,complètent la validation du modèle avec à la fois des conditions thermodynamiques variable et de l'aérodynamique.

Future constraints on pollutant emissions pushed car manufacturers towards gasoline direct injection (GDI) technologies to improve engine performances and reduce fuel consumption and emissions. New challenges are then introduced in terms of combustion optimization due to a more complex…

Advisors/Committee Members: Veynante, Denis (thesis director), Dulbecco, Alessio (thesis director).

Subjects/Keywords: Simulation système; Injection directe essence; Combustion; System simulation; Gasoline Direct injection; Combustion

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APA (6^th Edition):

Pellegrino, F. (2019). System Simulation of Combustion in Direct-Injection Spark-Ignition Engines : Simulation système de la combustion dans les moteurs à allumage commandé à injection directe. (Doctoral Dissertation). Université Paris-Saclay (ComUE). Retrieved from http://www.theses.fr/2019SACLC075

Chicago Manual of Style (16^th Edition):

Pellegrino, Federico. “System Simulation of Combustion in Direct-Injection Spark-Ignition Engines : Simulation système de la combustion dans les moteurs à allumage commandé à injection directe.” 2019. Doctoral Dissertation, Université Paris-Saclay (ComUE). Accessed March 05, 2021. http://www.theses.fr/2019SACLC075.

MLA Handbook (7^th Edition):

Pellegrino, Federico. “System Simulation of Combustion in Direct-Injection Spark-Ignition Engines : Simulation système de la combustion dans les moteurs à allumage commandé à injection directe.” 2019. Web. 05 Mar 2021.

Vancouver:

Pellegrino F. System Simulation of Combustion in Direct-Injection Spark-Ignition Engines : Simulation système de la combustion dans les moteurs à allumage commandé à injection directe. [Internet] [Doctoral dissertation]. Université Paris-Saclay (ComUE); 2019. [cited 2021 Mar 05]. Available from: http://www.theses.fr/2019SACLC075.

Council of Science Editors:

Pellegrino F. System Simulation of Combustion in Direct-Injection Spark-Ignition Engines : Simulation système de la combustion dans les moteurs à allumage commandé à injection directe. [Doctoral Dissertation]. Université Paris-Saclay (ComUE); 2019. Available from: http://www.theses.fr/2019SACLC075

Michigan Technological University

10. Schroeter, Robert A. CHARACTERIZATION OF THE POST INJECTION BEHAVIOR OF GASOLINE DIRECT INJECTION FUEL INJECTORS.

Degree: PhD, Department of Mechanical Engineering-Engineering Mechanics, 2019, Michigan Technological University

URL: https://digitalcommons.mtu.edu/etdr/903

► The characteristics of gasoline sprayed directly into combustion chambers are of critical importance to engine out emissions and combustion system development. The optimization of… (more)

Subjects/Keywords: direct injection; closing behavior; post injection; fuel droplets; Automotive Engineering; Heat Transfer, Combustion

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APA (6^th Edition):

Schroeter, R. A. (2019). CHARACTERIZATION OF THE POST INJECTION BEHAVIOR OF GASOLINE DIRECT INJECTION FUEL INJECTORS. (Doctoral Dissertation). Michigan Technological University. Retrieved from https://digitalcommons.mtu.edu/etdr/903

Chicago Manual of Style (16^th Edition):

Schroeter, Robert A. “CHARACTERIZATION OF THE POST INJECTION BEHAVIOR OF GASOLINE DIRECT INJECTION FUEL INJECTORS.” 2019. Doctoral Dissertation, Michigan Technological University. Accessed March 05, 2021. https://digitalcommons.mtu.edu/etdr/903.

MLA Handbook (7^th Edition):

Schroeter, Robert A. “CHARACTERIZATION OF THE POST INJECTION BEHAVIOR OF GASOLINE DIRECT INJECTION FUEL INJECTORS.” 2019. Web. 05 Mar 2021.

Vancouver:

Schroeter RA. CHARACTERIZATION OF THE POST INJECTION BEHAVIOR OF GASOLINE DIRECT INJECTION FUEL INJECTORS. [Internet] [Doctoral dissertation]. Michigan Technological University; 2019. [cited 2021 Mar 05]. Available from: https://digitalcommons.mtu.edu/etdr/903.

Council of Science Editors:

Schroeter RA. CHARACTERIZATION OF THE POST INJECTION BEHAVIOR OF GASOLINE DIRECT INJECTION FUEL INJECTORS. [Doctoral Dissertation]. Michigan Technological University; 2019. Available from: https://digitalcommons.mtu.edu/etdr/903

University of Toronto

11. Pan, Kang. Computational Studies of Gas Injection, Ignition and Combustion Emissions in a Direct-injection Natural Gas Engine.

Degree: PhD, 2019, University of Toronto

URL: http://hdl.handle.net/1807/95947

► The direct-injection of natural gas into the compression-ignition engines is attractive, due to its emission advantage and diesel-equivalent efficiency. The computational simulation of this next-generation… (more)

▼ The direct-injection of natural gas into the compression-ignition engines is attractive, due to its emission advantage and diesel-equivalent efficiency. The computational simulation of this next-generation heavy-duty engine can provide deep insights of the gas injection and ignition characteristics and help understand the emission formation process, and hence, a KIVA-3v based three-dimensional computational model was developed and improved to represent the configuration of a glow plug assisted direct-injection natural gas engine. This thesis presents the important conclusions about the numerical studies of the natural gas ignition and emissions by using this engine computational model. Preliminary simulations revealed that the shield for a glow plug, an ignition assist for natural gas in compression-ignition engines, can highly improve the natural gas ignition stability compared to an unshielded glow plug, and the design of the glow plug shield has great potential for the further improvement of the natural gas ignition. The different shield designs, characterized by the parameters such as shield opening shape, number and distribution, were evaluated by using the improved KIVA model. The simulated results clearly demonstrated the three key functions of a good shield design. A multi-opening shield, consisting of four small openings in a diamond shape, can achieve all three requirements and hence highly reduce the natural gas ignition delay and improve the ignition stability, compared to the original single-opening shield. The proper emission models are critical for the numerical simulations of natural gas engine emissions. For the gaseous species, a kinetic package, CANTERA, is coupled to KIVA CFD code to simulate the formation of important emissions, such as C2H2 and NOx. However, the available detailed mechanisms, such as GRI-3.0, will over-predict the ignition delay at low temperature ( Advisors/Committee Members: Wallace, James S, Mechanical and Industrial Engineering.

Subjects/Keywords: Combustion Emissions; Computational Study; Direct Injection; Gas Injection; Ignition; Natural Gas engine; 0548

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

APA (6^th Edition):

Pan, K. (2019). Computational Studies of Gas Injection, Ignition and Combustion Emissions in a Direct-injection Natural Gas Engine. (Doctoral Dissertation). University of Toronto. Retrieved from http://hdl.handle.net/1807/95947

Chicago Manual of Style (16^th Edition):

Pan, Kang. “Computational Studies of Gas Injection, Ignition and Combustion Emissions in a Direct-injection Natural Gas Engine.” 2019. Doctoral Dissertation, University of Toronto. Accessed March 05, 2021. http://hdl.handle.net/1807/95947.

MLA Handbook (7^th Edition):

Pan, Kang. “Computational Studies of Gas Injection, Ignition and Combustion Emissions in a Direct-injection Natural Gas Engine.” 2019. Web. 05 Mar 2021.

Vancouver:

Pan K. Computational Studies of Gas Injection, Ignition and Combustion Emissions in a Direct-injection Natural Gas Engine. [Internet] [Doctoral dissertation]. University of Toronto; 2019. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1807/95947.

Council of Science Editors:

Pan K. Computational Studies of Gas Injection, Ignition and Combustion Emissions in a Direct-injection Natural Gas Engine. [Doctoral Dissertation]. University of Toronto; 2019. Available from: http://hdl.handle.net/1807/95947

University of New South Wales

12. Bao, Yongming. Effect of injection pressure on ethanol and gasoline sprays in a spark-ignition direct-injection engine.

Degree: Mechanical & Manufacturing Engineering, 2013, University of New South Wales

URL: http://handle.unsw.edu.au/1959.4/53399 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12094/SOURCE02?view=true

► This study aims to clarify the spray development of ethanol, gasoline and iso-octane fuel, delivered by a multi-hole injector and spark-ignition direct-injection (SIDI) fuelling system.… (more)

▼ This study aims to clarify the spray development of ethanol, gasoline and iso-octane fuel, delivered by a multi-hole injector and spark-ignition direct-injection (SIDI) fuelling system. The focus is on how fuel properties and injection pressure impact temporal and spatial evolution of sprays at various ambient conditions. Two optical facilities were used: (1) a constant-flow spray chamber simulating cold-start conditions and (2) a single-cylinder SIDI engine running at normal, warmed-up operating conditions. In these optical facilities, Mie-scattering imaging is performed to measure penetrations of spray plumes at various injection pressures of 4, 7, 11 and 15 MPa. Experiments were first performed in the spray chamber to measure the spray tip penetration and penetration rate of ethanol, gasoline and iso-octane. It is observed that at 4 MPa injection pressure, the tip penetration length of ethanol sprays is shorter than that of gasoline sprays, likely due to lower injection velocity and increased nozzle loss associated with higher density and increased viscosity of ethanol, respectively. This assertion is further supported by the longest penetration length of iso-octane that has the lowest density among tested fuels and similar viscosity to gasoline. At higher injection pressure of 7 and 11 MPa, the penetration length difference between ethanol and gasoline sprays decreases and eventually ethanol sprays show a longer penetration length than that of gasoline sprays at the highest injection pressure of 15 MPa. This reversed trend is possibly because the penetration regime is changed such that the tip penetration is limited by aerodynamic drag force applied to fuel droplets, instead of the injection velocity or nozzle loss of the liquid jet. It is suggested that with increasing injection pressure, the fuel jet atomisation and droplet breakup enhance and therefore the lower aerodynamic drag associated with higher droplet size of ethanol sprays than that of gasoline sprays leads to a longer penetration length. The same trends of spray penetrations of ethanol, gasoline, and iso-octane are observed in the warmed optical engine with overall higher tip penetration length than that in the cold spray chamber primarily due to decreased air density and increased fuel temperature. In the same warmed optical engine, the effect of injection pressure on the structural transformation of flash-boiling sprays of gasoline and ethanol is investigated for two fuel injection timings of 90 and 300 crank angle degrees after top dead centre, corresponding to low and high ambient pressure conditions, respectively. The macroscopic spray structure was quantified using spray tip penetrations, spray spreading angles and spray areas. From the measurements, it is found that fuel sprays injected at the earlier injection timing, when the vapour pressure of the fuel is higher than the ambient pressure, show the convergence of the spray plumes towards the injector axis evidencing the flash-boiling phenomenon. By contrast, fuel injected at the later… Advisors/Committee Members: Kook, Sanghoon, Mechanical & Manufacturing Engineering, Faculty of Engineering, UNSW.

Subjects/Keywords: Ethanol; Gasoline; Iso-octane fuel; Spark-ignition direct-injection (SIDI); Injection pressure; Spray; Fuel economy

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APA (6^th Edition):

Bao, Y. (2013). Effect of injection pressure on ethanol and gasoline sprays in a spark-ignition direct-injection engine. (Masters Thesis). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/53399 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12094/SOURCE02?view=true

Chicago Manual of Style (16^th Edition):

Bao, Yongming. “Effect of injection pressure on ethanol and gasoline sprays in a spark-ignition direct-injection engine.” 2013. Masters Thesis, University of New South Wales. Accessed March 05, 2021. http://handle.unsw.edu.au/1959.4/53399 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12094/SOURCE02?view=true.

MLA Handbook (7^th Edition):

Bao, Yongming. “Effect of injection pressure on ethanol and gasoline sprays in a spark-ignition direct-injection engine.” 2013. Web. 05 Mar 2021.

Vancouver:

Bao Y. Effect of injection pressure on ethanol and gasoline sprays in a spark-ignition direct-injection engine. [Internet] [Masters thesis]. University of New South Wales; 2013. [cited 2021 Mar 05]. Available from: http://handle.unsw.edu.au/1959.4/53399 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12094/SOURCE02?view=true.

Council of Science Editors:

Bao Y. Effect of injection pressure on ethanol and gasoline sprays in a spark-ignition direct-injection engine. [Masters Thesis]. University of New South Wales; 2013. Available from: http://handle.unsw.edu.au/1959.4/53399 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12094/SOURCE02?view=true

Carnegie Mellon University

13. Saliba, Georges. Emissions and Climate Impacts of Aerosol Emissions from Cookstoves and Gasoline Direct Injection Vehicles.

Degree: 2018, Carnegie Mellon University

URL: http://repository.cmu.edu/dissertations/1126

► Anthropogenic gas- and particle-phase emissions affect the climate by absorbing and scattering radiation, and have been linked to adverse health effects. Black carbon (BC), a… (more)

▼ Anthropogenic gas- and particle-phase emissions affect the climate by absorbing and scattering radiation, and have been linked to adverse health effects. Black carbon (BC), a by-product of incomplete combustion, is the most potent light-absorbing component of atmospheric aerosols, with a top-of-the atmosphere direct radiative forcing estimated to be only second to CO2. However, there is a large uncertainty associated with BC’s total direct and indirect radiative forcings due to uncertain source emissions and optical properties and complex interactions with clouds. In this dissertation we investigate the direct radiative impact of two of the most important sources of BC particles: biofuel combustion and vehicles. Together these sources contribute around 40% of the global atmospheric BC burden. Recently, both of these energy sources are undergoing rapid technology changes, and the climate impacts from the emissions of these newly adopted technologies remain uncertain. We also investigate the role of atmospheric processing on the optical properties and growth rates of particles. This dissertation first assesses the climate impacts of aerosol emissions of two rapidly emerging technologies: improved cookstoves and gasoline direct injection (GDI) vehicles. We performed extensive measurements of gas- and particle emissions and optical properties of emissions from both these sources. Our data suggests that improved rocket cookstoves have, on average, a factor of two lower particulate matter (PM) emissions compared to traditional cookstoves but only a 4% climate benefits associated with their emissions. In contrast, we estimated a 30% climate benefit from switching traditional cookstoves to gasifier ones. Of all the stoves tested, charcoal stoves had the lowest emissions and climate impacts. Our data suggests the widespread deployment of improved cookstoves to replace existing, inefficient, traditional cookstoves will likely result in health and climate co-benefits. Similarly, we estimated that the rapid adoption of GDI vehicles to replace existing port fuel injection (PFI) vehicles will likely result in reduced warming from emissions. This is due to the higher fuel economy of GDI engines; we measured an average CO2 reduction of 57 g/mi, from switching engine technologies. GDI engine emissions had higher PM emissions compared to PFI engines, similar to previous findings. In addition, our data suggests that newer GDI engines have a factor of two lower PM emissions compared to older GDI engines. These improvements in emissions may enable GDI-equipped vehicles to meet the new Federal Tier 3 PM standard of 3.0 mg/mi without gasoline particulate filters (GPF, which would reduce their fuel economy). To better constrain the large uncertainty of radiative forcing associated with cookstove emissions, this dissertation examines emissions and optical properties from several cookstove and fuel combinations. We performed extensive laboratory measurements of the optical properties of fresh cookstove emissions using the newly developed…

Subjects/Keywords: Cookstoves; gasoline direct injection; Growth rates; Mie theory; Optical properties; Vehicles

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

APA (6^th Edition):

Saliba, G. (2018). Emissions and Climate Impacts of Aerosol Emissions from Cookstoves and Gasoline Direct Injection Vehicles. (Thesis). Carnegie Mellon University. Retrieved from http://repository.cmu.edu/dissertations/1126

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):

Saliba, Georges. “Emissions and Climate Impacts of Aerosol Emissions from Cookstoves and Gasoline Direct Injection Vehicles.” 2018. Thesis, Carnegie Mellon University. Accessed March 05, 2021. http://repository.cmu.edu/dissertations/1126.

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

MLA Handbook (7^th Edition):

Saliba, Georges. “Emissions and Climate Impacts of Aerosol Emissions from Cookstoves and Gasoline Direct Injection Vehicles.” 2018. Web. 05 Mar 2021.

Vancouver:

Saliba G. Emissions and Climate Impacts of Aerosol Emissions from Cookstoves and Gasoline Direct Injection Vehicles. [Internet] [Thesis]. Carnegie Mellon University; 2018. [cited 2021 Mar 05]. Available from: http://repository.cmu.edu/dissertations/1126.

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

Council of Science Editors:

Saliba G. Emissions and Climate Impacts of Aerosol Emissions from Cookstoves and Gasoline Direct Injection Vehicles. [Thesis]. Carnegie Mellon University; 2018. Available from: http://repository.cmu.edu/dissertations/1126

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

University of Alberta

14. Momenimovahed, Ali. Measuring Vehicle Particle Emission Factors: Applications and Techniques.

Degree: PhD, Department of Mechanical Engineering, 2014, University of Alberta

URL: https://era.library.ualberta.ca/files/6t053h49m

► The experimental work described in this thesis was conducted to study the particulate emissions from different automotive applications. The effect of fuel choice (gasoline vs.… (more)

Subjects/Keywords: gasoline direct injection; effective density; transit bus; Particulate emissions

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APA (6^th Edition):

Momenimovahed, A. (2014). Measuring Vehicle Particle Emission Factors: Applications and Techniques. (Doctoral Dissertation). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/6t053h49m

Chicago Manual of Style (16^th Edition):

Momenimovahed, Ali. “Measuring Vehicle Particle Emission Factors: Applications and Techniques.” 2014. Doctoral Dissertation, University of Alberta. Accessed March 05, 2021. https://era.library.ualberta.ca/files/6t053h49m.

MLA Handbook (7^th Edition):

Momenimovahed, Ali. “Measuring Vehicle Particle Emission Factors: Applications and Techniques.” 2014. Web. 05 Mar 2021.

Vancouver:

Momenimovahed A. Measuring Vehicle Particle Emission Factors: Applications and Techniques. [Internet] [Doctoral dissertation]. University of Alberta; 2014. [cited 2021 Mar 05]. Available from: https://era.library.ualberta.ca/files/6t053h49m.

Council of Science Editors:

Momenimovahed A. Measuring Vehicle Particle Emission Factors: Applications and Techniques. [Doctoral Dissertation]. University of Alberta; 2014. Available from: https://era.library.ualberta.ca/files/6t053h49m

Anna University

15. Karthikeyan R. Performance and emission study on diesel engine fueled by turpentine oil using various fuel admission techniques;.

Degree: 2013, Anna University

URL: http://shodhganga.inflibnet.ac.in/handle/10603/11481

►

The increasing industrialization and modernization of the world led to a steep rise in the consumption and demand for the petroleum-based fuels every year. The… (more)

▼

The increasing industrialization and modernization of the world led to a steep rise in the consumption and demand for the petroleum-based fuels every year. The present known reserves, supplying fuel today are not capable of withstanding the growth rate of consumption. Hence, it is frightened that they are not going to last long forever. The present investigation uses one such oil called Turpentine (an essential oil obtained from various species of pine tree) in a direct injection (DI) diesel engine as an alternate fuel for diesel oil. The properties of turpentine falls in between the properties of petrol and diesel and few of them are also closer to that of diesel oil. Hence, the present investigation uses three different fuel admission methods such as bi-fuel, dual fuel and sole fuel methods for admitting large fraction of turpentine in the existing diesel engine. The investigation reveals that the bi-fuel method does not require any form of engine modification. However, it replaces only 40% of diesel fuel consumption and librates considerably higher NOx emission than that of standard diesel operation. Dual fuel method of turpentine admission replaces a maximum of 65% diesel fuel consumption and produces considerably lower emissions than that of diesel fuel operation and other methods. However, it requires considerable engine modification. The sole fuel method of turpentine admission offers a maximum and complete diesel replacement than other investigation methods. However, this method requires considerable engine modification and also emits higher NOx. From the investigation of turpentine admission methods it is found that the dual fuel method of turpentine admission stands first and offers maximum diesel replacement with lower emissions. Hence, this method is suggested as the best method for admitting turpentine in the existing diesel engines and this method also provides a large scope for future study and investigation. newline newline newline

Appendices 1 to 6; pp. 110-122

Advisors/Committee Members: Nallusamy, N..

Subjects/Keywords: Diesel engine fueled; turpentine oil; direct injection (DI); Nox

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APA (6^th Edition):

R, K. (2013). Performance and emission study on diesel engine fueled by turpentine oil using various fuel admission techniques;. (Thesis). Anna University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/11481

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):

R, Karthikeyan. “Performance and emission study on diesel engine fueled by turpentine oil using various fuel admission techniques;.” 2013. Thesis, Anna University. Accessed March 05, 2021. http://shodhganga.inflibnet.ac.in/handle/10603/11481.

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

MLA Handbook (7^th Edition):

R, Karthikeyan. “Performance and emission study on diesel engine fueled by turpentine oil using various fuel admission techniques;.” 2013. Web. 05 Mar 2021.

Vancouver:

R K. Performance and emission study on diesel engine fueled by turpentine oil using various fuel admission techniques;. [Internet] [Thesis]. Anna University; 2013. [cited 2021 Mar 05]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/11481.

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

Council of Science Editors:

R K. Performance and emission study on diesel engine fueled by turpentine oil using various fuel admission techniques;. [Thesis]. Anna University; 2013. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/11481

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

Universidade Federal de Santa Maria

16. Gustavo Heller Nietiedt. MISTURAS DE BIODIESEL DE SOJA, COM ADITIVAÇÃO E VARIAÇÃO DO PONTO DE AVANÇO, EM UM MOTOR DE INJEÇÃO DIRETA.

Degree: 2010, Universidade Federal de Santa Maria

URL: http://coralx.ufsm.br/tede/tde_busca/arquivo.php?codArquivo=3375

►

O óleo diesel combustível é utilizado em grande escala no país e no mundo. Por outro lado, a crescente conscientização ambiental acarreta em uma maior… (more)

▼

O óleo diesel combustível é utilizado em grande escala no país e no mundo. Por outro lado, a crescente conscientização ambiental acarreta em uma maior demanda por recursos energéticos renováveis. O pioneirismo no uso do etanol faz com que o Brasil também ostente condições de avançar rapidamente na consolidação do uso do biodiesel em maiores escalas, na substituição ou em mistura ao diesel de origem mineral em motores de Ciclo Diesel. Assim, o presente trabalho avaliou, por meio de ensaios em bancada dinamométrica, o desempenho de um trator agrícola equipado com motor de injeção direta sob a utilização de diferentes misturas de biodiesel metílico de soja. Também foi avaliada a influência da adição de aditivos para a melhoria de desempenho, bem como foram utilizados dois pontos de avanço de injeção, sendo um deles original e o outro adiantado. Os melhores resultados foram obtidos sob a utilização do combustível B10, para todos os parâmetros de desempenho avaliados (torque, potência e consumo específico de combustível). Para a variável torque essa proporção apresentou valores apenas 0,4% maiores que os apresentados pela proporção B5, sendo que, para a variável potência, os valores do combustível B10 foram superiores em apenas 0,2% em relação ao B5, tornando praticamente inexpressivas as diferenças entre tais combustíveis. Já o combustível B100 apresentou o menor desempenho em torque, potência e consumo específico. Em relação ao consumo específico, essa proporção apresentou os maiores valores, 10% superiores aos valores apresentados pelo combustível B10. Quanto ao uso de aditivos e o avanço no ponto inicial de injeção não foi identificada maior significância nos resultados obtidos. Para estas condições de ensaio, onde foram realizados testes em um trator modelo 1986, dotado de um motor com 3000 horas de uso, percebe-se que há a possibilidade de utilização de maiores teores de biodiesel adicionado ao diesel de origem mineral sem a necessidade de maiores modificações no motor. Todavia, é perfeitamente normal que ocorra relativa queda de desempenho sob o uso de maiores teores de biodiesel metílico de soja. Assim, deve-se considerar a possibilidade de utilização de maiores proporções de biodiesel adicionado ao diesel comercial, realizando-se uma análise da viabilidade econômica inerente ao uso desses biocombustíveis.

The diesel fuel is used widely in the country and the world. Moreover, growing environmental awareness leads to a larger demand for renewable energy resources. The pioneering in the use of ethanol makes Brazil also bears some conditions to move quickly to consolidate the use of the biodiesel in larger scales, in the replacement or as a blend with mineral diesel in diesel engines. Thus, this work evaluated by tests on a dynamometer bench, the performance of an agricultural tractor equipped with direct injection engine using different blends of soybeans methyl biodiesel. Also, it was analyzed the influence of additives to improve the performance, and it was used two positions of injection timing, one of them…

Advisors/Committee Members: Leonardo Nabaes Romano, José Fernando Schlosser, Walter Boller.

Subjects/Keywords: injeção direta; soja; biocombustíveis; ENGENHARIA AGRICOLA; biofuels; soybeans; direct injection

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

APA (6^th Edition):

Nietiedt, G. H. (2010). MISTURAS DE BIODIESEL DE SOJA, COM ADITIVAÇÃO E VARIAÇÃO DO PONTO DE AVANÇO, EM UM MOTOR DE INJEÇÃO DIRETA. (Thesis). Universidade Federal de Santa Maria. Retrieved from http://coralx.ufsm.br/tede/tde_busca/arquivo.php?codArquivo=3375

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):

Nietiedt, Gustavo Heller. “MISTURAS DE BIODIESEL DE SOJA, COM ADITIVAÇÃO E VARIAÇÃO DO PONTO DE AVANÇO, EM UM MOTOR DE INJEÇÃO DIRETA.” 2010. Thesis, Universidade Federal de Santa Maria. Accessed March 05, 2021. http://coralx.ufsm.br/tede/tde_busca/arquivo.php?codArquivo=3375.

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

MLA Handbook (7^th Edition):

Nietiedt, Gustavo Heller. “MISTURAS DE BIODIESEL DE SOJA, COM ADITIVAÇÃO E VARIAÇÃO DO PONTO DE AVANÇO, EM UM MOTOR DE INJEÇÃO DIRETA.” 2010. Web. 05 Mar 2021.

Vancouver:

Nietiedt GH. MISTURAS DE BIODIESEL DE SOJA, COM ADITIVAÇÃO E VARIAÇÃO DO PONTO DE AVANÇO, EM UM MOTOR DE INJEÇÃO DIRETA. [Internet] [Thesis]. Universidade Federal de Santa Maria; 2010. [cited 2021 Mar 05]. Available from: http://coralx.ufsm.br/tede/tde_busca/arquivo.php?codArquivo=3375.

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

Council of Science Editors:

Nietiedt GH. MISTURAS DE BIODIESEL DE SOJA, COM ADITIVAÇÃO E VARIAÇÃO DO PONTO DE AVANÇO, EM UM MOTOR DE INJEÇÃO DIRETA. [Thesis]. Universidade Federal de Santa Maria; 2010. Available from: http://coralx.ufsm.br/tede/tde_busca/arquivo.php?codArquivo=3375

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

University of Waterloo

17. Pereira, Aaron. Investigation of Direct Injection Fuel Sprays in High Velocity Air Flows.

Degree: 2013, University of Waterloo

URL: http://hdl.handle.net/10012/8007

► The study of single-plume sprays into cross-flowing air is found extensively in literature, however, with the continued development of the Spark Ignition Direct Injection (SIDI)… (more)

▼ The study of single-plume sprays into cross-flowing air is found extensively in literature, however, with the continued development of the Spark Ignition Direct Injection (SIDI) engine, the behaviour of multi-plume sprays in cross-flowing conditions is of interest. In the present work, the injection of a multi-plume spray into a high-velocity cross-flow is investigated; an experimental apparatus capable of providing a cross-flow with core velocities higher than 200 m/s is developed; analysis techniques are developed to characterize the cross-flow and multi-plume spray independently; the multi-plume spray is characterized as it issues into the cross-flowing air. The round air jet used for the cross-flow was designed using the concepts put forth for the design of wind tunnel contractions. The axial and radial velocities were measured using a Particle Image Velocimetry system from LaVision Inc. and the potential core length determined for the core velocities corresponding to Mach numbers of 0.35 and 0.58. It was determined that the potential core length increases with increasing Mach number and that increased compressibility, leads to reduced mixing within the core. Furthermore, velocity profiles of the air jet show that self-similarity is preserved within the shear layer of the initial region. The multi-plume spray was also characterized in quiescent conditions for 10 and 15 MPa injection pressures. It was found that the penetration depth and spray width increased with increasing injection pressure, but that the spray angle decreased with increasing pressure. The increase in penetration depth is consistent with the findings presented in literature, while the decrease in spray angle with increasing pressure is contrary to literature. Next, the multi-plume spray, injected at 10 and 15 MPa, is characterized as it issues into the cross-flowing air stream at Mach numbers equal to 0.35 and 0.58. The tail length and penetration are measured and it is found that for the first, the cross-flow velocity is the primary factor with higher cross-flow velocity resulting in a longer tail length, while for the latter, the injection pressure is the major factor, with higher injection pressures resulting in higher penetrations. That being said, the injection pressure does play a small role in the tail length, with the 15 MPa injection having a slightly longer tail length than the 10 MPa injection in the Mach number 0.58 cross-flow. This is attributed to the finer atomization, which is expected from the 15 MPa injection and which leads to quicker entrainment of fuel droplets into the cross-flow. The spray axis was predicted for each set of conditions from 0.1 ms to 1.0 ms after Start of Fuel (SOF). It was found that before 0.3 ms, the spray retains its multi-plume nature, while after 0.3 ms it behaves like a single-plume spray. Once the spray has crossed this transition point, the spray axis is temporally independent and can be predicted by the logarithmic models, similar to those used for single-plume sprays in…

Subjects/Keywords: Direct Injection; Cross-flow; Fuel Spray; Multi-plume

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

APA (6^th Edition):

Pereira, A. (2013). Investigation of Direct Injection Fuel Sprays in High Velocity Air Flows. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/8007

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):

Pereira, Aaron. “Investigation of Direct Injection Fuel Sprays in High Velocity Air Flows.” 2013. Thesis, University of Waterloo. Accessed March 05, 2021. http://hdl.handle.net/10012/8007.

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

MLA Handbook (7^th Edition):

Pereira, Aaron. “Investigation of Direct Injection Fuel Sprays in High Velocity Air Flows.” 2013. Web. 05 Mar 2021.

Vancouver:

Pereira A. Investigation of Direct Injection Fuel Sprays in High Velocity Air Flows. [Internet] [Thesis]. University of Waterloo; 2013. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10012/8007.

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

Council of Science Editors:

Pereira A. Investigation of Direct Injection Fuel Sprays in High Velocity Air Flows. [Thesis]. University of Waterloo; 2013. Available from: http://hdl.handle.net/10012/8007

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

Purdue University

18. Cruise, Dustin Lee. Laboratory Apparatus For Gas Turbine Combustion Development.

Degree: MS, Mechanical Engineering, 2014, Purdue University

URL: http://docs.lib.purdue.edu/open_access_theses/418

► The next generation of combustor technology will be required to meet the demands of a world more focused on greenhouse gases and global warming.… (more)

▼ The next generation of combustor technology will be required to meet the demands of a world more focused on greenhouse gases and global warming. Due to this new focus on emission control, combustors must produce less NO x , while operating in a higher pressure environment that is more prone to combustion instabilities. This work focuses on the development of a lab and combustor that will be used for the next generation combustor development. The lab development includes layout and organization, facilities, measurement and instrumentation, automation of the testing process, and an imaging tool for diagnostics. A Lean Direction Injection (LDI) single element combustor has been designed, built, and tested. Results included chemiluminescence imaging and measurements of combustion instabilities. Initial results are promising for future controls and combustion development. A three axis translation table has been developed to support diagnostic efforts. Initial performance measurements indicate the table will be capable of fast scanning of flames compared to other translation options. In addition to achieving the desired performance, the size of the table was kept compact without sacrificing travel, allowing more access to the burners, and more burners to be mounted onto the table. One of the first projects will be the application of the Laser-induced Fluorescence Triple-integration Method (LIFTIME) method to the LDI to assist combustion controls development. After the experience gained with the charge coupled device (CCD) camera, we see potential to use this in parallel with the LIFTIME system to better map the flame. The image processing capabilities of the LabVIEW software have been briefly explored, and look promising as a method for automated flame geometry analysis to improve the flame mapping. In addition to the application of LIFTIME to the LDI, the exploration of the combustion control using the variable injector position, and the variable impedance exit area will begin. Due to the work presented in this thesis, a fully-functional combustion lab is available for current and future students, and more in-depth combustion research can now begin. In addition to providing resources for the students of our research group, this lab will continue to support Senior Design students as well as those in graduate level combustion courses. Advisors/Committee Members: Galen B. King, Hukam C. Mongia, Peter H. Meckl, William Anderson.

Subjects/Keywords: Applied sciences; Combustion; Control; Lean direct injection; Variable geometry; Mechanical Engineering

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APA (6^th Edition):

Cruise, D. L. (2014). Laboratory Apparatus For Gas Turbine Combustion Development. (Thesis). Purdue University. Retrieved from http://docs.lib.purdue.edu/open_access_theses/418

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):

Cruise, Dustin Lee. “Laboratory Apparatus For Gas Turbine Combustion Development.” 2014. Thesis, Purdue University. Accessed March 05, 2021. http://docs.lib.purdue.edu/open_access_theses/418.

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

MLA Handbook (7^th Edition):

Cruise, Dustin Lee. “Laboratory Apparatus For Gas Turbine Combustion Development.” 2014. Web. 05 Mar 2021.

Vancouver:

Cruise DL. Laboratory Apparatus For Gas Turbine Combustion Development. [Internet] [Thesis]. Purdue University; 2014. [cited 2021 Mar 05]. Available from: http://docs.lib.purdue.edu/open_access_theses/418.

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

Council of Science Editors:

Cruise DL. Laboratory Apparatus For Gas Turbine Combustion Development. [Thesis]. Purdue University; 2014. Available from: http://docs.lib.purdue.edu/open_access_theses/418

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

University of Toronto

19. Habbaky, Charles. A Comparative Study between Circular and Elliptical Nozzle Holes on Natural Gas Combustion and Soot Formation in a Direct Injection Engine.

Degree: 2012, University of Toronto

URL: http://hdl.handle.net/1807/33230

►

The effects of changing nozzle hole patterns and hole geometry in a direct injection natural gas optically accessible engine was investigated. Six nozzles were studied… (more)

Subjects/Keywords: Natural Gas; Soot; Direct Injection; Combustion; Elliptical; 0548

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APA (6^th Edition):

Habbaky, C. (2012). A Comparative Study between Circular and Elliptical Nozzle Holes on Natural Gas Combustion and Soot Formation in a Direct Injection Engine. (Masters Thesis). University of Toronto. Retrieved from http://hdl.handle.net/1807/33230

Chicago Manual of Style (16^th Edition):

Habbaky, Charles. “A Comparative Study between Circular and Elliptical Nozzle Holes on Natural Gas Combustion and Soot Formation in a Direct Injection Engine.” 2012. Masters Thesis, University of Toronto. Accessed March 05, 2021. http://hdl.handle.net/1807/33230.

MLA Handbook (7^th Edition):

Habbaky, Charles. “A Comparative Study between Circular and Elliptical Nozzle Holes on Natural Gas Combustion and Soot Formation in a Direct Injection Engine.” 2012. Web. 05 Mar 2021.

Vancouver:

Habbaky C. A Comparative Study between Circular and Elliptical Nozzle Holes on Natural Gas Combustion and Soot Formation in a Direct Injection Engine. [Internet] [Masters thesis]. University of Toronto; 2012. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1807/33230.

Council of Science Editors:

Habbaky C. A Comparative Study between Circular and Elliptical Nozzle Holes on Natural Gas Combustion and Soot Formation in a Direct Injection Engine. [Masters Thesis]. University of Toronto; 2012. Available from: http://hdl.handle.net/1807/33230

University of Toronto

20. Singh, Abhikaran. Effect of the Seasonal Changes in Fuel Composition on Particulate Matter Emissions from a Gasoline Direct Injection Engine.

Degree: 2018, University of Toronto

URL: http://hdl.handle.net/1807/91752

►

The Ministry of Environment and Climate Change (MOECC) found that black carbons (BC) concentrations were significantly higher in summer than in winter, which could be… (more)

Subjects/Keywords: Black Carbon; Gasoline Direct Injection Engine; organic Carbon; Particulate Emissions; 0540

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APA (6^th Edition):

Singh, A. (2018). Effect of the Seasonal Changes in Fuel Composition on Particulate Matter Emissions from a Gasoline Direct Injection Engine. (Masters Thesis). University of Toronto. Retrieved from http://hdl.handle.net/1807/91752

Chicago Manual of Style (16^th Edition):

Singh, Abhikaran. “Effect of the Seasonal Changes in Fuel Composition on Particulate Matter Emissions from a Gasoline Direct Injection Engine.” 2018. Masters Thesis, University of Toronto. Accessed March 05, 2021. http://hdl.handle.net/1807/91752.

MLA Handbook (7^th Edition):

Singh, Abhikaran. “Effect of the Seasonal Changes in Fuel Composition on Particulate Matter Emissions from a Gasoline Direct Injection Engine.” 2018. Web. 05 Mar 2021.

Vancouver:

Singh A. Effect of the Seasonal Changes in Fuel Composition on Particulate Matter Emissions from a Gasoline Direct Injection Engine. [Internet] [Masters thesis]. University of Toronto; 2018. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1807/91752.

Council of Science Editors:

Singh A. Effect of the Seasonal Changes in Fuel Composition on Particulate Matter Emissions from a Gasoline Direct Injection Engine. [Masters Thesis]. University of Toronto; 2018. Available from: http://hdl.handle.net/1807/91752

21. Ramos, Manuel José Matos Graça. Sources of Particulate Matter Emissions Variability from a Gasoline Direct Injection Engine.

Degree: 2015, University of Toronto

URL: http://hdl.handle.net/1807/69150

►

Ultrafine particulate matter (PM) emissions from gasoline direct injection engines are a concern due to their associated health effects. This experimental study investigated sources of… (more)

Subjects/Keywords: Emissions; Ethanol; Gasoline Direct Injection; GDI; Particulate Matter; SIDI; 0548

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APA (6^th Edition):

Ramos, M. J. M. G. (2015). Sources of Particulate Matter Emissions Variability from a Gasoline Direct Injection Engine. (Masters Thesis). University of Toronto. Retrieved from http://hdl.handle.net/1807/69150

Chicago Manual of Style (16^th Edition):

Ramos, Manuel José Matos Graça. “Sources of Particulate Matter Emissions Variability from a Gasoline Direct Injection Engine.” 2015. Masters Thesis, University of Toronto. Accessed March 05, 2021. http://hdl.handle.net/1807/69150.

MLA Handbook (7^th Edition):

Ramos, Manuel José Matos Graça. “Sources of Particulate Matter Emissions Variability from a Gasoline Direct Injection Engine.” 2015. Web. 05 Mar 2021.

Vancouver:

Ramos MJMG. Sources of Particulate Matter Emissions Variability from a Gasoline Direct Injection Engine. [Internet] [Masters thesis]. University of Toronto; 2015. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1807/69150.

Council of Science Editors:

Ramos MJMG. Sources of Particulate Matter Emissions Variability from a Gasoline Direct Injection Engine. [Masters Thesis]. University of Toronto; 2015. Available from: http://hdl.handle.net/1807/69150

University of Oxford

22. Xu, Fan. Experimental research on particulate matter emissions from gasoline direct injection engines.

Degree: PhD, 2012, University of Oxford

URL: http://ora.ox.ac.uk/objects/uuid:308fc929-a747-4793-8d90-1d5bf81fae5d ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.580961

► As the legislation on vehicle emissions is becoming more and more stringent, increasing attention has been paid to the fine particles emitted by diesel and… (more)

▼ As the legislation on vehicle emissions is becoming more and more stringent, increasing attention has been paid to the fine particles emitted by diesel and gasoline vehicles. The high number emission of fine particles has been shown to have a large impact on the atmospheric environment and human health. Researchers have shown that gasoline engines, especially Gasoline Direct Injection (GDI) engines, tend to emit large amounts of small size particles compared to Port Fuel Injection (PFI) gasoline engines and diesel engines fitted with Diesel Particulate Filters (DPFs). As a result, the particle number emissions of GDI engines will be restricted by the EU6 legislation. The particulate emission level of GDI engines means that they would face some challenges in meeting the EU6 requirement. This thesis undertakes research in the following area. Firstly, the filtration efficiencies of glass fibre filters were quantified using a Cambustion Differential Mobility Spectrometer 500 (DMS500) to see if all of the particles from the sampled gas can be collected by the filters. Secondly, various valve timings and different injection modes such as double injection with a second injection after compression, single early injection and split early injection were implemented to measure the Particulate Matter (PM) emissions and combustion characteristics of a GDI engine under warm-up operating conditions. Thirdly, the techniques for removing volatile particles were investigated using a catalytic Volatile Particle Remover (VPR) and an Evaporation Tube (ET) with hot air dilution under various test conditions. The results show that for the glass fibre filters tested here, the transmission efficiencies of the particles are very low, indicating that PM sampling using fibre filters is an effective method of studying the particulate emissions from the engine. Particle number emissions using double injection with injection after compression were much higher than those with single injection during the intake stroke. Under 1200 rpm, 110 Nm cold engine operation, no reduction effect on PM emissions was shown by using split intake injection to further facilitate homogeneous mixture formation compared with single intake injection. Valve timings showed moderate effects on particulate emissions. Properly adjusted timing for exhaust valve closure led to reduced particulate emissions by a factor of about 2 and the combustion characteristics were not adversely affected much. The VPR temperature and exhaust residence time did not show much effect on the catalytic VPR performance once the mass flow rate of exhaust was above 0.09 g/s. Generally, the transmission efficiencies of the VPR follow the trends of the scaled PMP counting efficiency specification. Hot air dilution is effective in reducing the small size particles. At 23 nm, the transmission efficiencies are within the error range of the PMP specification. The catalytic VPR and the Evaporation Tube were all found to be effective in reducing the particle number of small size (nucleation mode)…

Subjects/Keywords: 621.43; Combustion; Gasoline Direct Injection; Emissions; Particulate Matter

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APA (6^th Edition):

Xu, F. (2012). Experimental research on particulate matter emissions from gasoline direct injection engines. (Doctoral Dissertation). University of Oxford. Retrieved from http://ora.ox.ac.uk/objects/uuid:308fc929-a747-4793-8d90-1d5bf81fae5d ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.580961

Chicago Manual of Style (16^th Edition):

Xu, Fan. “Experimental research on particulate matter emissions from gasoline direct injection engines.” 2012. Doctoral Dissertation, University of Oxford. Accessed March 05, 2021. http://ora.ox.ac.uk/objects/uuid:308fc929-a747-4793-8d90-1d5bf81fae5d ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.580961.

MLA Handbook (7^th Edition):

Xu, Fan. “Experimental research on particulate matter emissions from gasoline direct injection engines.” 2012. Web. 05 Mar 2021.

Vancouver:

Xu F. Experimental research on particulate matter emissions from gasoline direct injection engines. [Internet] [Doctoral dissertation]. University of Oxford; 2012. [cited 2021 Mar 05]. Available from: http://ora.ox.ac.uk/objects/uuid:308fc929-a747-4793-8d90-1d5bf81fae5d ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.580961.

Council of Science Editors:

Xu F. Experimental research on particulate matter emissions from gasoline direct injection engines. [Doctoral Dissertation]. University of Oxford; 2012. Available from: http://ora.ox.ac.uk/objects/uuid:308fc929-a747-4793-8d90-1d5bf81fae5d ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.580961

23. Kralj, Cedomir. Numerical simulation of diesel spray processes.

Degree: PhD, 1996, Imperial College London

URL: http://hdl.handle.net/10044/1/7964

Subjects/Keywords: 662.6; Direct injection diesels

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APA (6^th Edition):

Kralj, C. (1996). Numerical simulation of diesel spray processes. (Doctoral Dissertation). Imperial College London. Retrieved from http://hdl.handle.net/10044/1/7964

Chicago Manual of Style (16^th Edition):

Kralj, Cedomir. “Numerical simulation of diesel spray processes.” 1996. Doctoral Dissertation, Imperial College London. Accessed March 05, 2021. http://hdl.handle.net/10044/1/7964.

MLA Handbook (7^th Edition):

Kralj, Cedomir. “Numerical simulation of diesel spray processes.” 1996. Web. 05 Mar 2021.

Vancouver:

Kralj C. Numerical simulation of diesel spray processes. [Internet] [Doctoral dissertation]. Imperial College London; 1996. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10044/1/7964.

Council of Science Editors:

Kralj C. Numerical simulation of diesel spray processes. [Doctoral Dissertation]. Imperial College London; 1996. Available from: http://hdl.handle.net/10044/1/7964

24. Cutter, Paul. Diesel spray characteristics, spray/wall interaction and heat transfer.

Degree: PhD, 1996, Imperial College London

URL: http://hdl.handle.net/10044/1/7524

Subjects/Keywords: 621.43; High-speed direct-injection

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APA (6^th Edition):

Cutter, P. (1996). Diesel spray characteristics, spray/wall interaction and heat transfer. (Doctoral Dissertation). Imperial College London. Retrieved from http://hdl.handle.net/10044/1/7524

Chicago Manual of Style (16^th Edition):

Cutter, Paul. “Diesel spray characteristics, spray/wall interaction and heat transfer.” 1996. Doctoral Dissertation, Imperial College London. Accessed March 05, 2021. http://hdl.handle.net/10044/1/7524.

MLA Handbook (7^th Edition):

Cutter, Paul. “Diesel spray characteristics, spray/wall interaction and heat transfer.” 1996. Web. 05 Mar 2021.

Vancouver:

Cutter P. Diesel spray characteristics, spray/wall interaction and heat transfer. [Internet] [Doctoral dissertation]. Imperial College London; 1996. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10044/1/7524.

Council of Science Editors:

Cutter P. Diesel spray characteristics, spray/wall interaction and heat transfer. [Doctoral Dissertation]. Imperial College London; 1996. Available from: http://hdl.handle.net/10044/1/7524

Delft University of Technology

25. Merino Madrid, Cristian (author). Chemical Reactor Network for LDI Combustor: CRN development and Analysis of Different Fuels.

Degree: 2017, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:287ed536-a6b7-4344-b298-37c9b5ea1dda

►

Prediction of emissions from combustion systems is a complex problem involving the coupling between the flow field and chemistry. CFD analysis is the most commonly… (more)

▼

Prediction of emissions from combustion systems is a complex problem involving the coupling between the flow field and chemistry. CFD analysis is the most commonly employed approach. However, it has the drawback that a very high computational cost prevents the use of detailed chemistry models. This master thesis, which focuses on NOx emissions, uses a more unconventional method of emissions prediction: Chemical Reactor Network (CRN). The advantage of this method is that, as it does not use fine discretisation, closure models nor fluid dynamics equations, it allows the implementation of detailed chemistry mechanisms. A CRN is developed first for a single-element Lean Direct Injection (LDI) combustor and then the CRN is adapted for a Multi-Point LDI (MPLDI) combustor. CFD and experimental results are used to set up the CRN. In the base case scenario, in which kerosene is the fuel choice, the NOx emissions predicted are very close to experimental measurements. This is particularly meaningful given the high uncertainties of modelling this highly complex turbulent combustion process. The developed CRN is also used to predict NOx emissions for the same combustor when the fuel choice is varied. Namely, the alternative fuels considered are kerosene enriched with hydrogen, methane and methane enriched with hydrogen. In comparison to kerosene, higher Lower Heating Values (LHVs) of these fuels lead to lower combustor temperatures for the same power input. Consequently, the thermal NOx pathway is weakened and the NOx mass flow generated is reduced. Nevertheless, these fuels with a higher LHV come with an increased operational risk that must be overcome before their implementation in aviation becomes possible.

Flight Performance and Propulsion

Advisors/Committee Members: Gangoli Rao, Arvind (mentor), Augusto Viviani Perpignan, Andre (mentor), Gerritsma, Marc (graduation committee), Tummers, Mark (graduation committee), Delft University of Technology (degree granting institution).

Subjects/Keywords: Emissions; Modelling; Chemical Reactor Network; CRN; Lean Direct Injection; LDI

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APA (6^th Edition):

Merino Madrid, C. (. (2017). Chemical Reactor Network for LDI Combustor: CRN development and Analysis of Different Fuels. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:287ed536-a6b7-4344-b298-37c9b5ea1dda

Chicago Manual of Style (16^th Edition):

Merino Madrid, Cristian (author). “Chemical Reactor Network for LDI Combustor: CRN development and Analysis of Different Fuels.” 2017. Masters Thesis, Delft University of Technology. Accessed March 05, 2021. http://resolver.tudelft.nl/uuid:287ed536-a6b7-4344-b298-37c9b5ea1dda.

MLA Handbook (7^th Edition):

Merino Madrid, Cristian (author). “Chemical Reactor Network for LDI Combustor: CRN development and Analysis of Different Fuels.” 2017. Web. 05 Mar 2021.

Vancouver:

Merino Madrid C(. Chemical Reactor Network for LDI Combustor: CRN development and Analysis of Different Fuels. [Internet] [Masters thesis]. Delft University of Technology; 2017. [cited 2021 Mar 05]. Available from: http://resolver.tudelft.nl/uuid:287ed536-a6b7-4344-b298-37c9b5ea1dda.

Council of Science Editors:

Merino Madrid C(. Chemical Reactor Network for LDI Combustor: CRN development and Analysis of Different Fuels. [Masters Thesis]. Delft University of Technology; 2017. Available from: http://resolver.tudelft.nl/uuid:287ed536-a6b7-4344-b298-37c9b5ea1dda

Universitat Politècnica de València

26. Micó Reche, Carlos. DEVELOPMENT OF MEASUREMENT AND VISUALIZATION TECHNIQUES FOR CHARACTERIZATION OF MIXING AND COMBUSTION PROCESSES WITH SURROGATE FUELS .

Degree: 2015, Universitat Politècnica de València

URL: http://hdl.handle.net/10251/58991

► [EN] The development and optimization of new combustion modes is nowadays an important research field, to reduce the pollutant emissions of the reciprocating internal combustion… (more)

▼ [EN] The development and optimization of new combustion modes is nowadays an important research field, to reduce the pollutant emissions of the reciprocating internal combustion engines. Their development requires the use of a wide variety of experimental and theoretical tools, which make it possible to know and understand their fundamentals. In this context the main objective of this Thesis is framed: the development and optimization of measuring and visualization techniques, to reach the level of accuracy and detail required for current and future studies of that kind. The work has been based on the characterization of the diesel diffusion combustion to be able to focus the study on the methodological part, thanks to the extensive knowledge available on this combustion mode. The work has been divided in two main blocks. The first one is focused on the characterization of evaporation and air-fuel mixture formation processes. For this purpose, a new technique has been developed and applied, based on the light absorption by the fuel molecules (UV-VIS LAS), which allows measuring the vapour fuel local concentration within a diesel spray. It has been optimized to be applied under operating conditions similar to those found in a compression ignition engine with fuels whose optical properties are not optimal, but which are interesting for research due to its simplicity. Moreover, a new methodology has been developed for measuring the absorption coefficient of the fuels, under similar operating conditions (i.e. pressure and temperature) than those found within the combustion chamber of a compression ignition engine. Results have been analysed in detail, to be able to define the limitations and reliability of the methodology proposed. The second block corresponds to the characterization of the combustion process and the soot formation. For this purpose, a complex optical set-up has been developed which made it possible to simultaneously apply the three most used techniques that can be found in literature for soot measuring within a diesel flame: Laser Extinction Method, 2-Colour Pyrometry and Laser-Induced Incandescence. Results obtained by means of the three techniques have been compared in detail, not only to identify the main advantages and drawbacks of each technique, but also their reliability under different operating conditions.; [ES] El desarrollo y optimización de nuevos modos de combustión constituye actualmente un campo importante de investigación, para reducir la emisión de contaminantes en motores de combustión interna alternativos. Su desarrollo requiere del uso de gran variedad de herramientas experimentales y teóricas, que permitan conocer y comprender sus fundamentos. En este contexto se enmarca el objetivo principal de esta Tesis: la mejora y el desarrollo de técnicas de visualización y medida, para alcanzar el nivel de detalle y la precisión requeridos para estudios actuales y futuros de esta índole. El trabajo se ha basado en la caracterización de la combustión diésel por difusión para poder centrar… Advisors/Committee Members: Pastor Soriano, José Vicente (advisor).

Subjects/Keywords: Optical tecniques; Diesel; Combustion; Direct injection; Light absorption and scattering

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APA (6^th Edition):

Micó Reche, C. (2015). DEVELOPMENT OF MEASUREMENT AND VISUALIZATION TECHNIQUES FOR CHARACTERIZATION OF MIXING AND COMBUSTION PROCESSES WITH SURROGATE FUELS . (Doctoral Dissertation). Universitat Politècnica de València. Retrieved from http://hdl.handle.net/10251/58991

Chicago Manual of Style (16^th Edition):

Micó Reche, Carlos. “DEVELOPMENT OF MEASUREMENT AND VISUALIZATION TECHNIQUES FOR CHARACTERIZATION OF MIXING AND COMBUSTION PROCESSES WITH SURROGATE FUELS .” 2015. Doctoral Dissertation, Universitat Politècnica de València. Accessed March 05, 2021. http://hdl.handle.net/10251/58991.

MLA Handbook (7^th Edition):

Micó Reche, Carlos. “DEVELOPMENT OF MEASUREMENT AND VISUALIZATION TECHNIQUES FOR CHARACTERIZATION OF MIXING AND COMBUSTION PROCESSES WITH SURROGATE FUELS .” 2015. Web. 05 Mar 2021.

Vancouver:

Micó Reche C. DEVELOPMENT OF MEASUREMENT AND VISUALIZATION TECHNIQUES FOR CHARACTERIZATION OF MIXING AND COMBUSTION PROCESSES WITH SURROGATE FUELS . [Internet] [Doctoral dissertation]. Universitat Politècnica de València; 2015. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10251/58991.

Council of Science Editors:

Micó Reche C. DEVELOPMENT OF MEASUREMENT AND VISUALIZATION TECHNIQUES FOR CHARACTERIZATION OF MIXING AND COMBUSTION PROCESSES WITH SURROGATE FUELS . [Doctoral Dissertation]. Universitat Politècnica de València; 2015. Available from: http://hdl.handle.net/10251/58991

University of Windsor

27. LeBlanc, Simon. Spray Characteristics of Dimethyl Ether in a Direct Injection Application.

Degree: MA, Mechanical, Automotive, and Materials Engineering, 2019, University of Windsor

URL: https://scholar.uwindsor.ca/etd/7786

► The primary objective of this thesis is to analyze the spray characteristics and behaviour of dimethyl ether (DME) in a high-pressure direct injection application.… (more)

Subjects/Keywords: Alternative Fuels; Dimethyl Ether; Direct Injection; Fuel; Spray

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APA (6^th Edition):

LeBlanc, S. (2019). Spray Characteristics of Dimethyl Ether in a Direct Injection Application. (Masters Thesis). University of Windsor. Retrieved from https://scholar.uwindsor.ca/etd/7786

Chicago Manual of Style (16^th Edition):

LeBlanc, Simon. “Spray Characteristics of Dimethyl Ether in a Direct Injection Application.” 2019. Masters Thesis, University of Windsor. Accessed March 05, 2021. https://scholar.uwindsor.ca/etd/7786.

MLA Handbook (7^th Edition):

LeBlanc, Simon. “Spray Characteristics of Dimethyl Ether in a Direct Injection Application.” 2019. Web. 05 Mar 2021.

Vancouver:

LeBlanc S. Spray Characteristics of Dimethyl Ether in a Direct Injection Application. [Internet] [Masters thesis]. University of Windsor; 2019. [cited 2021 Mar 05]. Available from: https://scholar.uwindsor.ca/etd/7786.

Council of Science Editors:

LeBlanc S. Spray Characteristics of Dimethyl Ether in a Direct Injection Application. [Masters Thesis]. University of Windsor; 2019. Available from: https://scholar.uwindsor.ca/etd/7786

Brno University of Technology

28. Vondráček, Václav. Systémy přímého vstřikování paliva u zážehových motorů: Direct injection systems for spark-ignition engines.

Degree: 2018, Brno University of Technology

URL: http://hdl.handle.net/11012/10998

► This bacheleor´s thesis deals with direct injection of fuel spark-ignition motors. In each chapter you can learn about principle activities injection of fuel, meet single… (more)

Subjects/Keywords: Zážehový motor; přímý vstřik; benzín; Spark - ignition engine; direct injection; petrol

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APA (6^th Edition):

Vondráček, V. (2018). Systémy přímého vstřikování paliva u zážehových motorů: Direct injection systems for spark-ignition engines. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/10998

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):

Vondráček, Václav. “Systémy přímého vstřikování paliva u zážehových motorů: Direct injection systems for spark-ignition engines.” 2018. Thesis, Brno University of Technology. Accessed March 05, 2021. http://hdl.handle.net/11012/10998.

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

MLA Handbook (7^th Edition):

Vondráček, Václav. “Systémy přímého vstřikování paliva u zážehových motorů: Direct injection systems for spark-ignition engines.” 2018. Web. 05 Mar 2021.

Vancouver:

Vondráček V. Systémy přímého vstřikování paliva u zážehových motorů: Direct injection systems for spark-ignition engines. [Internet] [Thesis]. Brno University of Technology; 2018. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/11012/10998.

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

Council of Science Editors:

Vondráček V. Systémy přímého vstřikování paliva u zážehových motorů: Direct injection systems for spark-ignition engines. [Thesis]. Brno University of Technology; 2018. Available from: http://hdl.handle.net/11012/10998

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

Virginia Tech

29. English, Craig Alan. Development and Characterization of a Synchronously Actuated Response Atomizer for Studying Thermoacoustic Instabilities.

Degree: MS, Mechanical Engineering, 2012, Virginia Tech

URL: http://hdl.handle.net/10919/42378

► Increasing concerns over the condition of our environment and its long term health have led to the development of greener combustion techniques for use in… (more)

Subjects/Keywords: Lean Direct Injection; Thermoacoustic Instabilities; Atomization; Simplex; Spray

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

APA (6^th Edition):

English, C. A. (2012). Development and Characterization of a Synchronously Actuated Response Atomizer for Studying Thermoacoustic Instabilities. (Masters Thesis). Virginia Tech. Retrieved from http://hdl.handle.net/10919/42378

Chicago Manual of Style (16^th Edition):

English, Craig Alan. “Development and Characterization of a Synchronously Actuated Response Atomizer for Studying Thermoacoustic Instabilities.” 2012. Masters Thesis, Virginia Tech. Accessed March 05, 2021. http://hdl.handle.net/10919/42378.

MLA Handbook (7^th Edition):

English, Craig Alan. “Development and Characterization of a Synchronously Actuated Response Atomizer for Studying Thermoacoustic Instabilities.” 2012. Web. 05 Mar 2021.

Vancouver:

English CA. Development and Characterization of a Synchronously Actuated Response Atomizer for Studying Thermoacoustic Instabilities. [Internet] [Masters thesis]. Virginia Tech; 2012. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10919/42378.

Council of Science Editors:

English CA. Development and Characterization of a Synchronously Actuated Response Atomizer for Studying Thermoacoustic Instabilities. [Masters Thesis]. Virginia Tech; 2012. Available from: http://hdl.handle.net/10919/42378

University of New South Wales

30. Clark, Lewis. Flame propagation, flow field, and turbulence analysis in an optical spark-ignition direct-injection engine.

Degree: Mechanical & Manufacturing Engineering, 2018, University of New South Wales

URL: http://handle.unsw.edu.au/1959.4/60100 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:51132/SOURCE2?view=true

► Flame propagation and flow field analyses have been performed in an optical spark-ignition direct-injection (SIDI) engine to improve the understanding of the effects of fuel-injection… (more)

▼ Flame propagation and flow field analyses have been performed in an optical spark-ignition direct-injection (SIDI) engine to improve the understanding of the effects of fuel-injection events on bulk in-cylinder flow, turbulence intensity, burn rate, and indicated output. Initially, an investigation into the benefits of a double injection strategy over a single injection strategy was conducted, where it was found that a double injection strategy leads to significantly higher indicated mean effective pressure (IMEP) and total heat release, which is consistent with an increase in flame propagation speed. To further investigate the potential of double injection strategies, a study on the effect of injection timing was completed. It was found that the best performing strategy consisted of one injection relatively early in the intake stroke and one injection towards the middle of the compression stroke, likely due to the combination of both ample mixture formation time and a high level of spray induced turbulence. A high-speed particle image velocimetry (HSPIV) imaging system was developed to quantify large-scale flow structures and turbulence intensity, in order to aid the interpretation of the fuel-injection timing variation results. HSPIV images were first acquired on both a vertical (tumble) plane and a horizontal (swirl) plane during motored operation (i.e. no fuel injection or spark). The flow was decomposed into mean and fluctuating components via three different methods - ensemble averaging, spatial filtering, and temporal filtering. Relationships between spatial and temporal filtering were investigated, resulting in the creation of a spatial filter which utilises a mean flow speed scaled cut-off length - tuned in order to match the turbulent kinetic energy (TKE) profile of a 300 Hz temporal filter. The spatial filtering techniques were applied to five selected fuel-injected operating conditions, ranging from two early injections to two late injections. The bulk flow was found to be extremely sensitive to relatively small changes in injection timing, although an expected trend of increasing turbulence intensity with retarded injection timing was clearly observed. Relationships between TKE and burn rate were present, but not as obvious as anticipated, as total kinetic energy and cycle-to-cycle variation in large-scale flow structures were also found to play a significant role. Advisors/Committee Members: Kook, Shawn, Mechanical & Manufacturing Engineering, Faculty of Engineering, UNSW, Hawkes, Evatt, Mechanical & Manufacturing Engineering, Faculty of Engineering, UNSW.

Subjects/Keywords: Direct-injection engine; Flame propagation; Optical spark-ignition

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

APA (6^th Edition):

Clark, L. (2018). Flame propagation, flow field, and turbulence analysis in an optical spark-ignition direct-injection engine. (Doctoral Dissertation). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/60100 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:51132/SOURCE2?view=true

Chicago Manual of Style (16^th Edition):

Clark, Lewis. “Flame propagation, flow field, and turbulence analysis in an optical spark-ignition direct-injection engine.” 2018. Doctoral Dissertation, University of New South Wales. Accessed March 05, 2021. http://handle.unsw.edu.au/1959.4/60100 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:51132/SOURCE2?view=true.

MLA Handbook (7^th Edition):

Clark, Lewis. “Flame propagation, flow field, and turbulence analysis in an optical spark-ignition direct-injection engine.” 2018. Web. 05 Mar 2021.

Vancouver:

Clark L. Flame propagation, flow field, and turbulence analysis in an optical spark-ignition direct-injection engine. [Internet] [Doctoral dissertation]. University of New South Wales; 2018. [cited 2021 Mar 05]. Available from: http://handle.unsw.edu.au/1959.4/60100 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:51132/SOURCE2?view=true.

Council of Science Editors:

Clark L. Flame propagation, flow field, and turbulence analysis in an optical spark-ignition direct-injection engine. [Doctoral Dissertation]. University of New South Wales; 2018. Available from: http://handle.unsw.edu.au/1959.4/60100 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:51132/SOURCE2?view=true

Open Access Theses and Dissertations