Modeling of transient heat flux in spark ignition engine during combustion and comparisons with experiments

Yusaf, T. F. and Fong, S. F. and Yusoff, M. Z. and Hussein, I. (2005) Modeling of transient heat flux in spark ignition engine during combustion and comparisons with experiments. American Journal of Applied Sciences, 2 (10). pp. 1438-1444. ISSN 1546-9239

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Abstract

A quasi-one dimensional engine cycle simulation program was developed to predict the transient heat flux during combustion in a spark ignition engine. A two-zone heat release model was utilized to model the combustion process inside the combustion chamber. The fuel, air and burned gas properties throughout the engine cycle were calculated using variable specific heats. The transient heat flux inside the combustion chamber due to the change in the in-cylinder gas temperature and pressure during combustion was determined using the Woschni heat transfer model. The program was written in MATLAB together with the Graphical User Interface (GUI). Numerical results were compared with the experimental measurements and good agreement was obtained. Four thermocouples were used and positioned equi-spaced at 5mm intervals along a ray from the spark plug location on the engine head. These thermocouples were able to capture the heat flux release by the burned gas to the wall during the combustion process including the cycle-to-cycle variations. Pressure sensor was installed at the engine head to capture the pressure change throughout the cycle


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Deposited with blanket permission of publisher.
Depositing User: Ms Leslie Blay
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - No Department
Date Deposited: 12 May 2010 07:21
Last Modified: 02 Jul 2013 23:54
Uncontrolled Keywords: internal combustion engine; Woschni; spark ignition engine; heat flux; mathematical model
Fields of Research (FOR2008): 09 Engineering > 0902 Automotive Engineering > 090201 Automotive Combustion and Fuel Engineering (incl. Alternative/Renewable Fuels)
09 Engineering > 0913 Mechanical Engineering > 091307 Numerical Modelling and Mechanical Characterisation
09 Engineering > 0915 Interdisciplinary Engineering > 091502 Computational Heat Transfer
Socio-Economic Objective (SEO2008): B Economic Development > 88 Transport > 8898 Environmentally Sustainable Transport > 889899 Environmentally Sustainable Transport not elsewhere classified
URI: http://eprints.usq.edu.au/id/eprint/8082

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