한국자동차공학회논문집 (Transactions of the Korean Society of Automotive Engineers)

  • 제19권3호
  • /
  • Pages.99-105
  • /
  • 2011
  • /
  • 1225-6382(pISSN)
  • /
  • 2234-0149(eISSN)
한국자동차공학회 (The Korean Society of Automotive Engineers)
권호 표지

승용 디젤 엔진에서 분사 전략이 배출 가스 및 엔진 성능에 미치는 영향에 관한 연구

Effect of Injection Strategy on the Exhaust Emission and Performance Characteristics of a Light-duty Diesel Engine

  • Roh, Hyun-Gu (Department of Mechanical and Automotive Engineering, Induk University) ;
  • Lee, Doo-Jin (Department of Mechanical Engineering, Graduate School, Hanyang University) ;
  • Lee, Chang-Sik (Department of Mechanical Engineering, Hanyang University)
  • 투고 : 2010.07.05
  • 심사 : 2010.11.24
  • 발행 : 2011.05.01
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초록

This paper described the effect of the multiple injections on the emission characteristics and combustion stability in a common rail diesel engine. In order to investigate the influence of multiple injections in a passenger car diesel engine, the injection strategy was varied with pilot injection, post injection and one main injection at various conditions. Based on the experimental results, the combustion and emissions characteristics were analyzed for the various injection strategies such as main, pilot-main, double-pilot-main, double- pilot-main-post injection strategy. It is revealed that the $NO_X$, HC and CO emissions are reduced by double pilot and post injection at medium load, however, soot emission is increased. Also, in the case of multiple injection, the combustion pressure is increased smoothly near the TDC and the coefficient of variation and fuel consumptions are decreased.

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참고문헌

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