Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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The Effect of Multi-ignition Strategy on the Combustion and Emission Characteristics in a Ultra Lean Burn GDI Engine

초희박 GDI엔진에서 다단점화에 의한 연소 및 배기 특성

  • Park, Cheol-Woong (Environmental System Research Division / Engine Research Team, Korea Institutes of Machinery & Materials) ;
  • Kim, Sung-Dae (Environmental System Research Division / Engine Research Team, Korea Institutes of Machinery & Materials) ;
  • Kim, Hong-Suk (Environmental System Research Division / Engine Research Team, Korea Institutes of Machinery & Materials) ;
  • Oh, Hee-Chang (Department of Mechanical Engineering, Korea Advanced Institutes of Science & Technology) ;
  • Bae, Choong-Sik (Department of Mechanical Engineering, Korea Advanced Institutes of Science & Technology)
  • 박철웅 (한국기계연구원 그린동력연구실) ;
  • 김성대 (한국기계연구원 그린동력연구실) ;
  • 김홍석 (한국기계연구원 그린동력연구실) ;
  • 오희창 (한국과학기술원 기계공학과) ;
  • 배충식 (한국과학기술원 기계공학과)
  • Received : 2011.07.25
  • Accepted : 2011.10.18
  • Published : 2012.05.01
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Abstract

Since air pollution problem by emissions from automotive vehicles has become social issues, lean-burn gasoline direct injection (GDI) engine is focused as an alternative to meet the requirement of reinforced emission regulation and improved fuel consumption. Spray-guided type DI combustion is promising technology, which characterized by the centrally mounted injector and closely positioned spark plug, since stable lean combustion can be realized even at ultra-lean mixture condition. In the present study, the effect of multi-ignition with developed charge coil on combustion and emission characteristics was investigated in optical accessible single cylinder engine. In order to fully understand the in-cylinder phenomena and the mechanisms of emission production, optical diagnostics, such as flame visualization was also carried out at frequently using operating condition. Multi-ignition is effective to improve fuel economy but increase NOx emission at flammability limit.

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References

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