UTHM Institutional Repository

Optimum combustion chamber geometry for a compression ignition engine retrofitted to run using compressed natural gas (CNG)

Osman, S. A. and Alimin, A. J. and Liong, V. S. (2013) Optimum combustion chamber geometry for a compression ignition engine retrofitted to run using compressed natural gas (CNG). Applied Mechanics and Materials, 315. pp. 552-556. ISSN 16627482

[img] PDF
J1523_97307ad8cbe77e1266ca19ee0588aa44.pdf

Download (153kB)

Abstract

The use of natural gas as an alternative fuels are motivated from the impact in deteriorating quality of air and the energy shortage from petroleum products. Through retrofitting, CI engine runs on CNG, will be able to reduce the negative impact mainly on the use of petroleum products. However, this required the modification of the combustion chamber geometry by reducing the compression ratio to value that suits combustion of CNG. In this present studies, four different shapes and geometries of combustion chamber were designed and simulate using CFD package powered by Ansys workbench, where k-ε turbulence model was used to predict the flow in the combustion chamber. The results of turbulence kinetic energy, velocity vectors and streamline are presented. The enhancement of air-fuel mixing inside the engine cylinder can be observed, where the design with re-entrance and lower center projection provide better results compared to other combustion geometries designs.

Item Type: Article
Uncontrolled Keywords: Combustion chamber geometry; compression ignition engine; compressed natural gas; retrofitted mono-gas system
Subjects: T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL1-484 Motor vehicles. Cycles
Divisions: Faculty of Mechanical and Manufacturing Engineering > Department of Energy and Thermofluid Engineering
Depositing User: Mr. Mohammad Shaifulrip Ithnin
Date Deposited: 13 Aug 2018 03:36
Last Modified: 13 Aug 2018 03:36
URI: http://eprints.uthm.edu.my/id/eprint/8977
Statistic Details: View Download Statistic

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year