Journal of the Korean Institute of Gas (한국가스학회지)

The Korean Institute of GAS (한국가스학회)
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An Investigation on the Effect of Fuel Stratification of DME/n-Butane mixture on Reduction of Pressure Rise-Rate in HCCI Combustion

DME/n-Butane 혼합 연료의 농도 성층화에 의한 HCCI엔진연소의 압력 상승률 저감에 관한 연구

  • Lim, Ock-Taeck (School of Mechanical and Automotve Engineering, Ulsan Univ) ;
  • Park, Kyu-Yeol (School of Mechanical and Automotve Engineering, Ulsan Univ)
  • 임옥택 (울산대학교 기계자동차공학부) ;
  • 박규열 (울산대학교 기계자동차공학부)
  • Received : 2010.10.26
  • Accepted : 2011.06.21
  • Published : 2011.06.30
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Abstract

This study investigates the effects of the DME and n-Butane mixture and of the stratification on combustion characteristics of HCCI engine by chemical reaction calculation. First, the existing DME reaction scheme and n-Butane is combined to make new chemical reaction model, then validating the effectiveness of new scheme. Furthermore, this study verify the HCCI combustion characteristics according to the changes of DME and n-Butane mixture ratio, which shows different auto ignition characteristics. Finally, it confirms the effects of stratification of mixture fuel on the reduction of pressure rise rate.

본 연구에서는 DME와 n-Butane 연료를 사용하여 혼합연료 및 성층화효과가 HCCI 연소 특성에 미치는 영향을 화학반응수치계산을 통해서 알아보고자 한다. 우선, 기존에 완성된 DME와 n-Butane 반응스킴을 이용하여 새로운 화학 반응 모델을 만들고 기존의 DME 화학 반응 모델과 n-Butane 화학 반응 모델과 비교하여 유효성을 확보한다. 나아가, 자발화 특성이 다른 DME와 n-Butane 두 연료의 혼합비 변화에 따른 HCCI 연소 특성을 파악한다. 마지막으로, 혼합 연료를 각각 성층급기 했을 경우에 압력상승률 저감 효과를 파악 한다.

Keywords

References

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