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A Numerical Study of Combustion Characteristics for HCCI Engine with Detailed Diesel Surrogate Chemical Mechanism  

Lee, Won-Jun (인하대학교 기계공학과 대학원)
Lee, Seung-Ro (인하대학교 기계공학과)
Lee, Chang-Eon (인하대학교 기계공학과)
Publication Information
Journal of the Korean Society of Combustion / v.16, no.2, 2011 , pp. 9-15 More about this Journal
Abstract
Homogeneous charge compression ignition(HCCI) is the best concept able to provide low NOx and PM in diesel engine emissions. This new alternative combustion process is mainly controlled by chemical kinetics in comparison with the conventional combustion in internal combustion engine. In this paper, combustion characteristics of HCCI engine with suggested diesel surrogate(heptane/toluene mixture fuel) reaction mechanism were numerically investigated by heptane/toluene mixture ratio and EGR ratio. As results, the ignition timing became faster with increasing of heptane, and an initial oxidation and the ignition timing of the mixture fuel were affected by heptane and toluene, respectively.
Keywords
HCCI; Heptane; Toluene; Diesel surrogate; Combustion characteristics;
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