한국자동차공학회논문집 (Transactions of the Korean Society of Automotive Engineers)

  • 제17권5호
  • /
  • Pages.31-38
  • /
  • 2009
  • /
  • 1225-6382(pISSN)
  • /
  • 2234-0149(eISSN)
한국자동차공학회 (The Korean Society of Automotive Engineers)
권호 표지

과급을 이용한 저온 디젤 연소의 운전영역 확장 및 배기 배출물 저감

Expansion of Operating Range and Reduction of Engine out Emission in Low Temperature Diesel Combustion with Boosting

  • 심의준 (한국과학기술원 기계공학과) ;
  • 한상욱 (한국과학기술원 기계공학과) ;
  • 장진영 (한국과학기술원 기계공학과) ;
  • 박정서 (한국과학기술원 기계공학과) ;
  • 배충식 (한국과학기술원 기계공학과)
  • 발행 : 2009.09.01
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초록

Supercharging system was adopted to investigate the influence of boost pressure on operating range and exhaust emissions by using a supercharger at low temperature diesel combustion (LTC) condition in a 5-cylinder 2.7 L direct injection diesel engine. The experimental parameters such as injection quantity, injection timing, injection pressure and exhaust gas recirculation (EGR) rate were varied to find maximum operating range in LTC condition. As a result of adopting increased boost pressure in LTC, wider operating range was achieved compared with naturally aspirated condition due to increased mixing intensity. Increased boost pressure resulted in lower hydrocarbon (HC) and carbon monoxide (CO) emissions due to increased swirl rate and mixing intensity, which induced complete combustion. Moreover, increased boost pressure in LTC resulted in much lower soot emissions compared with high speed direct injection (HSDI) condition.

키워드

참고문헌

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