Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Effect of Thermal Stratification for Reducing Pressure Rise Rate in HCCI Combustion Based on Multi-zone Modeling

Multi Zone Modeling을 이용한 온도 성층화의 효과를 갖는 예혼합압축자기착화엔진의 압력상승률 저감에 대한 모사

  • Kwon, O-Seok (Graduate School of Mechanical and Automotive Engineering, Ulsan University) ;
  • Lim, Ock-Taeck (Department of Mechanical and Automotive Engineering, Ulsan University)
  • 권오석 (울산대학교 기계자동차공학부 대학원) ;
  • 임옥택 (울산대학교 기계자동차공학부)
  • Received : 2008.07.28
  • Accepted : 2009.03.20
  • Published : 2009.07.01
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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

References

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