Variation of Air Flow Pattern Through Dissimilar Valve Lift In A Spark Ignition Engine
Bi-fuel conversions are a common alternative fuelling option for mono-fuel gasoline SI vehicles because of the minor vehicle modifications required. In Malaysia, most bi-fuel vehicles are fuelled with compressed natural gas (CNG) and gasoline. However, CNG flame speed is lower than gasoline reduci...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Taylor & Francis
2012
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| Subjects: | |
| Online Access: | http://umpir.ump.edu.my/id/eprint/8446/1/fkm-2012-devarajan-variation_of_air_flow.pdf |
| _version_ | 1825822106973110272 |
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| author | D., Ramasamy Khoo, Aik Soon Z. A., Zainal Briggs, Horizon Walker-Gitano |
| author_facet | D., Ramasamy Khoo, Aik Soon Z. A., Zainal Briggs, Horizon Walker-Gitano |
| author_sort | D., Ramasamy |
| collection | UMP |
| description | Bi-fuel conversions are a common alternative fuelling option for mono-fuel gasoline SI vehicles because of the
minor vehicle modifications required. In Malaysia, most bi-fuel vehicles are fuelled with compressed natural gas
(CNG) and gasoline. However, CNG flame speed is lower than gasoline reducing the power and range of the vehicle when operating on CNG. This situation can be improved by increasing the flame speed via higher swirl generation. A computational fluid dynamics model is used to analyse swirl generated by dissimilar valve lift (DVL) profiles on the intake valve. A three-dimensional engine simulation shows differences in swirl motion and turbulence between the original symmetric valve lift profile and the DVL. The higher swirl number reduces the turbulence kinetic energy level slightly. The best case profile is selected for further experimental testing. |
| first_indexed | 2024-03-06T11:51:38Z |
| format | Article |
| id | UMPir8446 |
| institution | Universiti Malaysia Pahang |
| language | English |
| last_indexed | 2024-03-06T11:51:38Z |
| publishDate | 2012 |
| publisher | Taylor & Francis |
| record_format | dspace |
| spelling | UMPir84462018-04-26T02:58:50Z http://umpir.ump.edu.my/id/eprint/8446/ Variation of Air Flow Pattern Through Dissimilar Valve Lift In A Spark Ignition Engine D., Ramasamy Khoo, Aik Soon Z. A., Zainal Briggs, Horizon Walker-Gitano TJ Mechanical engineering and machinery TL Motor vehicles. Aeronautics. Astronautics Bi-fuel conversions are a common alternative fuelling option for mono-fuel gasoline SI vehicles because of the minor vehicle modifications required. In Malaysia, most bi-fuel vehicles are fuelled with compressed natural gas (CNG) and gasoline. However, CNG flame speed is lower than gasoline reducing the power and range of the vehicle when operating on CNG. This situation can be improved by increasing the flame speed via higher swirl generation. A computational fluid dynamics model is used to analyse swirl generated by dissimilar valve lift (DVL) profiles on the intake valve. A three-dimensional engine simulation shows differences in swirl motion and turbulence between the original symmetric valve lift profile and the DVL. The higher swirl number reduces the turbulence kinetic energy level slightly. The best case profile is selected for further experimental testing. Taylor & Francis 2012 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/8446/1/fkm-2012-devarajan-variation_of_air_flow.pdf D., Ramasamy and Khoo, Aik Soon and Z. A., Zainal and Briggs, Horizon Walker-Gitano (2012) Variation of Air Flow Pattern Through Dissimilar Valve Lift In A Spark Ignition Engine. Journal of the Chinese Institute of Engineers, 36 (8). pp. 1-14. ISSN 0253–3839 (print); 2158–7299 (online). (Published) http://dx.doi.org/10.1080/02533839.2012.747056 DOI: http://dx.doi.org/10.1080/02533839.2012.747056 |
| spellingShingle | TJ Mechanical engineering and machinery TL Motor vehicles. Aeronautics. Astronautics D., Ramasamy Khoo, Aik Soon Z. A., Zainal Briggs, Horizon Walker-Gitano Variation of Air Flow Pattern Through Dissimilar Valve Lift In A Spark Ignition Engine |
| title | Variation of Air Flow Pattern Through Dissimilar Valve Lift In A Spark Ignition Engine |
| title_full | Variation of Air Flow Pattern Through Dissimilar Valve Lift In A Spark Ignition Engine |
| title_fullStr | Variation of Air Flow Pattern Through Dissimilar Valve Lift In A Spark Ignition Engine |
| title_full_unstemmed | Variation of Air Flow Pattern Through Dissimilar Valve Lift In A Spark Ignition Engine |
| title_short | Variation of Air Flow Pattern Through Dissimilar Valve Lift In A Spark Ignition Engine |
| title_sort | variation of air flow pattern through dissimilar valve lift in a spark ignition engine |
| topic | TJ Mechanical engineering and machinery TL Motor vehicles. Aeronautics. Astronautics |
| url | http://umpir.ump.edu.my/id/eprint/8446/1/fkm-2012-devarajan-variation_of_air_flow.pdf |
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