Development of a direct fuel injector for a two-stroke gasoline engine

A prototype pressure-swirl injector was designed to suit an arbitrary two�stroke, gasoline direct injection engine requirement. A commercial computational fluid dynamics software FLUENT was used as a tool to analyze the performance of the conceptual design. A prototype injector was fabricated on...

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Main Author:	Mohd Ali, Mas Fawzi
Format:	Thesis
Language:	English
Published:	2007
Subjects:	TL Motor vehicles Aeronautics Astronautics
Online Access:	http://eprints.uthm.edu.my/7340/1/24p%20MAS%20FAWZI%20MOHD%20ALI.pdf
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id	my-uthm-ep.7340
record_format	uketd_dc
spelling	my-uthm-ep.73402022-07-21T04:06:44Z Development of a direct fuel injector for a two-stroke gasoline engine 2007-02 Mohd Ali, Mas Fawzi TL Motor vehicles. Aeronautics. Astronautics TL1-484 Motor vehicles. Cycles A prototype pressure-swirl injector was designed to suit an arbitrary two�stroke, gasoline direct injection engine requirement. A commercial computational fluid dynamics software FLUENT was used as a tool to analyze the performance of the conceptual design. A prototype injector was fabricated once the conceptual design met the requirements. The fabricated prototype injector was then subjected to a series of specification tests such as leak test, static flow rate test and discharge coefficient test. A dedicated test rig was set up to evaluate the performance of the prototype injector. The spray images at specified time frame were illuminated by Nd:Y AG laser sheet and captured using a high-speed digital camera. The stored images were analyzed to give data of spray angle, and droplet Sauter mean diameter at fuel-air pressure differential ranging from 1.0 to 5.0 MPa, with a step size of 1.0 MPa. From the tests, the prototype injector static flow rate, half spray cone angle and the droplet Sauter mean diameter at fuel injection pressure of 5.0 MPa was found to comply with the outlined requirements, which are approximately 475 cc/min, 32° and 19 11m respectively. Finally, the experimental data was compared with the calculated data. It was found that the measured data of static flow rate, discharge coefficient, and droplet Sauter mean diameter were higher than the computed data at fuel-air pressure differential between 1.0 and 3.0 MPa. In contrast, the calculated initial spray angle was overestimated by 3% at all tested fuel-air pressure differentials. 2007-02 Thesis http://eprints.uthm.edu.my/7340/ http://eprints.uthm.edu.my/7340/1/24p%20MAS%20FAWZI%20MOHD%20ALI.pdf text en public mphil masters Universiti Teknologi Malaysia Fakulti Kejuruteraan Mekanikal
institution	Universiti Tun Hussein Onn Malaysia
collection	UTHM Institutional Repository
language	English
topic	TL Motor vehicles Aeronautics Astronautics TL Motor vehicles Aeronautics Astronautics
spellingShingle	TL Motor vehicles Aeronautics Astronautics TL Motor vehicles Aeronautics Astronautics Mohd Ali, Mas Fawzi Development of a direct fuel injector for a two-stroke gasoline engine
description	A prototype pressure-swirl injector was designed to suit an arbitrary two�stroke, gasoline direct injection engine requirement. A commercial computational fluid dynamics software FLUENT was used as a tool to analyze the performance of the conceptual design. A prototype injector was fabricated once the conceptual design met the requirements. The fabricated prototype injector was then subjected to a series of specification tests such as leak test, static flow rate test and discharge coefficient test. A dedicated test rig was set up to evaluate the performance of the prototype injector. The spray images at specified time frame were illuminated by Nd:Y AG laser sheet and captured using a high-speed digital camera. The stored images were analyzed to give data of spray angle, and droplet Sauter mean diameter at fuel-air pressure differential ranging from 1.0 to 5.0 MPa, with a step size of 1.0 MPa. From the tests, the prototype injector static flow rate, half spray cone angle and the droplet Sauter mean diameter at fuel injection pressure of 5.0 MPa was found to comply with the outlined requirements, which are approximately 475 cc/min, 32° and 19 11m respectively. Finally, the experimental data was compared with the calculated data. It was found that the measured data of static flow rate, discharge coefficient, and droplet Sauter mean diameter were higher than the computed data at fuel-air pressure differential between 1.0 and 3.0 MPa. In contrast, the calculated initial spray angle was overestimated by 3% at all tested fuel-air pressure differentials.
format	Thesis
qualification_name	Master of Philosophy (M.Phil.)
qualification_level	Master's degree
author	Mohd Ali, Mas Fawzi
author_facet	Mohd Ali, Mas Fawzi
author_sort	Mohd Ali, Mas Fawzi
title	Development of a direct fuel injector for a two-stroke gasoline engine
title_short	Development of a direct fuel injector for a two-stroke gasoline engine
title_full	Development of a direct fuel injector for a two-stroke gasoline engine
title_fullStr	Development of a direct fuel injector for a two-stroke gasoline engine
title_full_unstemmed	Development of a direct fuel injector for a two-stroke gasoline engine
title_sort	development of a direct fuel injector for a two-stroke gasoline engine
granting_institution	Universiti Teknologi Malaysia
granting_department	Fakulti Kejuruteraan Mekanikal
publishDate	2007
url	http://eprints.uthm.edu.my/7340/1/24p%20MAS%20FAWZI%20MOHD%20ALI.pdf
_version_	1747831134708826112

Development of a direct fuel injector for a two-stroke gasoline engine

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