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Effect of Thermal Stratification for Reducing Pressure Rise Rate in HCCI Combustion Based on Multi-zone Modeling  

Kwon, O-Seok (Graduate School of Mechanical and Automotive Engineering, Ulsan University)
Lim, Ock-Taeck (Department of Mechanical and Automotive Engineering, Ulsan University)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.17, no.4, 2009 , pp. 32-39 More about this Journal
Abstract
The HCCI engine is a next generation engine, with high efficiency and low emissions. The engine may be an alternative to SI and DI engines; however, HCCI's operating range is limited by an excessive rate of pressure rise during combustion and the resulting engine knock in high-load. The purpose of this study was to gain a understanding of the effect of only initial temperature and thermal stratification for reducing the pressure-rise rate in HCCI combustion. And we confirmed characteristics of combustion, knocking and emissions. The engine was fueled with Di-Methyl Ether. The computations were conducted using both a single-zone model and a multi-zone model by CHEMKIN and modified SENKIN.
Keywords
HCCI; Pressure-rise rate; Knocking; IMEP; Ringing Intensity; Thermal stratification; DME; Multi-zone model; Single-zone mode;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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