THERMAL SCIENCE

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Wenjing Wu

"NEAR WALL" COMBUSTION MODEL OF SPARK IGNITION ENGINE

ABSTRACT
This paper has illustrated a "near wall" combustion model for a spark ignition engine that was included in a two-zone thermodynamic model. The model has calculated cylinder pressure and temperature, composition, as well as heat transfer of fresh and combustion gas. The CO submodel used a simplified chemical equation to calculate the dynamics of CO during the expansion phase. Subsequently, the HC submodel is introduced, and the post-flame oxidation of un-burned hydrocarbon was affected by the reaction/diffusion phenomenon. After burning 90% of the fuel, the hydrocarbon reaction dominates at a very late stage of combustion. This modeling method can more directly describe the "near wall" flame reaction and its contribution to the total heat release rate.
KEYWORDS
engine, “near wall” combustion model, CO submodel, hydrocarbon submodel
PAPER SUBMITTED: 2021-05-11
PAPER REVISED: 2021-07-10
PAPER ACCEPTED: 2021-07-13
PUBLISHED ONLINE: 2021-10-17
DOI REFERENCE: https://doi.org/10.2298/TSCI2106189W
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2021, VOLUME 25, ISSUE Issue 6, PAGES [4189 - 4196]
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"Near wall" combustion model of spark ignition engine

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence