Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Characteristics of the In-cylinder Flow and Fuel Behavior with Respect to Engine Temperature Condition in the MPI Dual Injection Engine

MPI Dual Injection 엔진의 온도 조건 변화에 따른 엔진 내부 유동 및 연료 거동 특성에 관한 연구

  • 이승엽 (고려대학교 기계공학과) ;
  • 정진택 (고려대학교 기계공학과) ;
  • 박영준 (현대자동차 가솔린성능시험팀) ;
  • 유철호 (현대자동차 가솔린성능시험팀) ;
  • 김우태 (현대자동차 가솔린성능시험팀)
  • Received : 2013.10.31
  • Accepted : 2014.01.29
  • Published : 2014.04.01
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Abstract

The MPI dual injection engine can enhance the fuel efficiency and engine power. By using one injector per one intake port, MPI dual injection engine has an excellent fuel atomization and targeting injection. As the basic research for the MPI Dual injection engine design, this research was investigated in order to understand the characteristic of the in-cylinder flow and fuel behavior according to engine temperature condition and the fuel type in the MPI dual injection engines. The 3D unsteady CFD simulation for the MPI Dual injection engine was performed using STAR-CD. The engine operating condition was 2,000 rpm/WOT. The parameters for this study were fuel types, fuel temperatures and wall temperatures. As a result, the intake air amount, evaporated fuel in the cylinder and the fuel film on the wall were presented according to parameters that depend on the fuel properties and engine wall temperature. Also, the results were influenced by in-cylinder flow such as the intake flow, back flow and so on.

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References

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