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...
| Main Author: | |
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| Format: | Thesis |
| Language: | English |
| Published: |
2007
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| Online Access: | http://eprints.uthm.edu.my/7340/ http://eprints.uthm.edu.my/7340/1/24p%20MAS%20FAWZI%20MOHD%20ALI.pdf |
| _version_ | 1848889072144089088 |
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| author | Mohd Ali, Mas Fawzi |
| author_facet | Mohd Ali, Mas Fawzi |
| author_sort | Mohd Ali, Mas Fawzi |
| building | UTHM Institutional Repository |
| collection | Online Access |
| 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. |
| first_indexed | 2025-11-15T20:20:21Z |
| format | Thesis |
| id | uthm-7340 |
| institution | Universiti Tun Hussein Onn Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T20:20:21Z |
| publishDate | 2007 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | uthm-73402022-07-21T04:06:44Z http://eprints.uthm.edu.my/7340/ Development of a direct fuel injector for a two-stroke gasoline engine 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 NonPeerReviewed text en http://eprints.uthm.edu.my/7340/1/24p%20MAS%20FAWZI%20MOHD%20ALI.pdf Mohd Ali, Mas Fawzi (2007) Development of a direct fuel injector for a two-stroke gasoline engine. Masters thesis, Universiti Teknologi Malaysia. |
| spellingShingle | TL Motor vehicles. Aeronautics. Astronautics TL1-484 Motor vehicles. Cycles Mohd Ali, Mas Fawzi Development of a direct fuel injector for a two-stroke gasoline engine |
| title | 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_short | 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 |
| topic | TL Motor vehicles. Aeronautics. Astronautics TL1-484 Motor vehicles. Cycles |
| url | http://eprints.uthm.edu.my/7340/ http://eprints.uthm.edu.my/7340/1/24p%20MAS%20FAWZI%20MOHD%20ALI.pdf |