한국자동차공학회논문집 (Transactions of the Korean Society of Automotive Engineers)

  • 제12권5호
  • /
  • Pages.40-57
  • /
  • 2004
  • /
  • 1225-6382(pISSN)
  • /
  • 2234-0149(eISSN)
한국자동차공학회 (The Korean Society of Automotive Engineers)
권호 표지

3중분사가 HSDI 디젤엔진의 성능과 배기에 미치는 영향

The Effect of Triple Injection on Engine Performance and Emissions in a HSDI Diesel Engine

  • 최욱 (한국과학기술원 기계공학과) ;
  • 박철웅 (한국과학기술원 기계공학과) ;
  • 국상훈 (한국과학기술원 기계공학과) ;
  • 배충식 (한국과학기술원 기계공학과)
  • 발행 : 2004.09.01
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초록

The effects of triple (pilot, main and after) injection on combustion and emission characteristics in a HSDI (High-Speed Direct Injection) diesel engine were investigated using a single-cylinder optical diesel engine equipped with a common-rail injection system. The pilot injection affected the spray and combustion evolution of the following main injection. It was found that the pilot injection reduced the ignition delay, which led to lowered NOx (Nitric Oxides) level, and increased IMEP (Indicated Mean Effective Pressure) due to slow combustion pace during an expansion stroke. The after-injection was shown to be effective in reducing PM (Particulate Matter) even when a small amount of fuel was added. The results suggest that a proper combination of individual injection strategy could bring about a good synergetic effect on engine performance and emission.

키워드

참고문헌

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