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Research about Thermal Stratification Effect on HCCI Combustion Fueled with Primary Reference Fuel  

Lim, Ock-Taeck (Department of Mechanical and Automotive Engineering, University of Ulsan)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.16, no.5, 2008 , pp. 157-163 More about this Journal
Abstract
The HCCI combustion mode poses its own set of narrow engine operating by knocking. In order to solve this, inhomogeneity method of mixture and temperature is suggested. The purpose of this research is to get fundamental knowledge about the effect of thermal stratification on HCCI combustion of PRF -Air mixture. The temperature stratification is made by buoyancy effect in combustion chamber of RCM. The analysis items are pressure, temperature of in-cylinder gas and combustion duration. In addition, the structure of flames using the two dimensional chemiluminescence's images by a framing camera are analyzed. Under stratification, the LTR starting time and the HTR starting time are advanced than that of homogeneous. Further, the LTR period of homogeneous conditions became shorter than that of the stratified conditions. With the case of homogeneous condition, the luminosity duration becomes shorter than the case of stratified condition. Additionally, under stratified condition, the brightest luminosity intensity is delayed longer than at homogeneous condition.
Keywords
Homogeneous Charge Compression Ignition (HCCI); Rapid Compression Machine (RCM); Thermal Stratification; Primarily Reference Fuel (PRF);
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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