Computational Analysis Of Dissimilar Valve Lift (DVL) Swirl On A Bi-Fuel Compressed Natural Gas (CNG) Engine

Gasoline spark ignition (SI) engines are readily available for CNG Bi-fuel conversions because it requires only minor engine modifications. However, CNG flame speed was lower than gasoline hence, reducing the power and range of the vehicle when operating on CNG. This situation can be improved by in...

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Main Authors:	D., Ramasamy, K., Kadirgama, M. M., Noor
Format:	Article
Language:	English
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://umpir.ump.edu.my/id/eprint/9501/ http://umpir.ump.edu.my/id/eprint/9501/1/Acex%202015%20final.pdf

id	ump-9501
recordtype	eprints
spelling	ump-95012018-01-31T00:12:51Z http://umpir.ump.edu.my/id/eprint/9501/ Computational Analysis Of Dissimilar Valve Lift (DVL) Swirl On A Bi-Fuel Compressed Natural Gas (CNG) Engine D., Ramasamy K., Kadirgama M. M., Noor TJ Mechanical engineering and machinery Gasoline spark ignition (SI) engines are readily available for CNG Bi-fuel conversions because it requires only minor engine modifications. However, CNG flame speed was lower than gasoline hence, reducing the power and range of the vehicle when operating on CNG. This situation can be improved by increasing the flame speed via higher turbulence generated by swirl motion. A Computational fluid dynamics (CFD) model was used to analyse swirl generated by dissimilar valve lift (DVL) profiles on the intake valve. A 3D engine simulation shows differences in swirl motion and turbulence between the original symmetric valve lift profile and the DVL. The swirl before combustion was found to increase almost 25%. The higher swirl number can increase the turbulence kinetic energy (TKE) level which improves better fuel mixing. The 1 mm DVL proved to be the better choice from CFD analysis. Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/9501/1/Acex%202015%20final.pdf D., Ramasamy and K., Kadirgama and M. M., Noor Computational Analysis Of Dissimilar Valve Lift (DVL) Swirl On A Bi-Fuel Compressed Natural Gas (CNG) Engine. 9th International Conference on Advanced Computational Engineering and Experimenting.
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery D., Ramasamy K., Kadirgama M. M., Noor Computational Analysis Of Dissimilar Valve Lift (DVL) Swirl On A Bi-Fuel Compressed Natural Gas (CNG) Engine
description	Gasoline spark ignition (SI) engines are readily available for CNG Bi-fuel conversions because it requires only minor engine modifications. However, CNG flame speed was lower than gasoline hence, reducing the power and range of the vehicle when operating on CNG. This situation can be improved by increasing the flame speed via higher turbulence generated by swirl motion. A Computational fluid dynamics (CFD) model was used to analyse swirl generated by dissimilar valve lift (DVL) profiles on the intake valve. A 3D engine simulation shows differences in swirl motion and turbulence between the original symmetric valve lift profile and the DVL. The swirl before combustion was found to increase almost 25%. The higher swirl number can increase the turbulence kinetic energy (TKE) level which improves better fuel mixing. The 1 mm DVL proved to be the better choice from CFD analysis.
format	Article
author	D., Ramasamy K., Kadirgama M. M., Noor
author_facet	D., Ramasamy K., Kadirgama M. M., Noor
author_sort	D., Ramasamy
title	Computational Analysis Of Dissimilar Valve Lift (DVL) Swirl On A Bi-Fuel Compressed Natural Gas (CNG) Engine
title_short	Computational Analysis Of Dissimilar Valve Lift (DVL) Swirl On A Bi-Fuel Compressed Natural Gas (CNG) Engine
title_full	Computational Analysis Of Dissimilar Valve Lift (DVL) Swirl On A Bi-Fuel Compressed Natural Gas (CNG) Engine
title_fullStr	Computational Analysis Of Dissimilar Valve Lift (DVL) Swirl On A Bi-Fuel Compressed Natural Gas (CNG) Engine
title_full_unstemmed	Computational Analysis Of Dissimilar Valve Lift (DVL) Swirl On A Bi-Fuel Compressed Natural Gas (CNG) Engine
title_sort	computational analysis of dissimilar valve lift (dvl) swirl on a bi-fuel compressed natural gas (cng) engine
url	http://umpir.ump.edu.my/id/eprint/9501/ http://umpir.ump.edu.my/id/eprint/9501/1/Acex%202015%20final.pdf
first_indexed	2023-09-18T22:08:09Z
last_indexed	2023-09-18T22:08:09Z
_version_	1777414846880415744

Computational Analysis Of Dissimilar Valve Lift (DVL) Swirl On A Bi-Fuel Compressed Natural Gas (CNG) Engine

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