한국자동차공학회논문집 (Transactions of the Korean Society of Automotive Engineers)

  • 제16권2호
  • /
  • Pages.143-149
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  • 2008
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  • 1225-6382(pISSN)
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  • 2234-0149(eISSN)
한국자동차공학회 (The Korean Society of Automotive Engineers)
권호 표지

DME연료 디젤 엔진에서의 연소특성 해석

Numerical Studies on Combustion Characteristics of Diesel Engines using DME Fuel

  • Yu, Yong-Wook (Power Train R&D Center HMC&KMC, Hyundai Motor Company) ;
  • Lee, Jeong-Won (Department of Mechanical Engineering, Hanyang University) ;
  • Kim, Yong-Mo (Department of Mechanical Engineering, Hanyang University)
  • 발행 : 2008.03.31
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초록

The present study is mainly motivated to investigate the vaporization, auto-ignition and spray combustion processes in DI diesel engine using DME and n-heptane. In order to realistically simulate the dimethyl ether (DME) spray dynamics and vaporization characteristics in high-pressure and high-temperature environment, the high-pressure vaporization model has been utilized. The interaction between chemistry and turbulence is treated by employing the Representative Interaction Flamelet (RIF) model. The detailed chemistry of 336 elementary steps and 78 chemical species is used for the DME/air reaction. Based on numerical results, the detailed discussion has been made for the distinctly different combustion characteristics of DME diesel engine in term of vaporization, ignition delay, pollutant formation, and heat release rate.

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참고문헌

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