Proceedings of the KSME Conference (대한기계학회:학술대회논문집)

The Korean Society of Mechanical Engineers (대한기계학회)
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A Study on Characteristics of Combustion with Pilot Injection in a Marine Diesel Engine

선박용 디젤 엔진에서 Pilot 분사에 대한 연소 특성 연구

  • 이병화 (부산대학교 기계공학과 대학원) ;
  • 배명직 (부산대학교 기계공학과 대학원) ;
  • 한동식 (부산대학교 기계공학과 대학원) ;
  • 전충환 (부산대학교 기계공학부) ;
  • 장영준 (부산대학교 기계공학부) ;
  • 송주헌 (부산대학교 기계공학부)
  • Published : 2008.11.05
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Abstract

Multidimensional simulation has been carried out to be clear the role of initial combustion in a marine diesel engines on reduction of NOx and soot emissions by different pilot injection condition. Pilot injection can shorten the ignition delay, thus it reduces the premixed combustion phase. Since most NOx is formed during premixed combustion, pilot injections is one of reliable strategies to reduce the NOx. The formation of NOx consists of that formed by pilot injection and that formed by main injection. The result explains that 25-3-75 among the pilot injection conditions is effective to reduce the NOx, due to optimal combination pilot injection with main injection. The purpose of this study is to explain the characteristics of combustion with pilot injection of the marine diesel engine on reduction of exhaust emissions by examining the combustion process in a cylinder and to explore the formation mechanism of NOx between pilot injection and main injection.

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