Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Characteristics of Low Temperature Combustion in Single Cylinder Engine by High EGR Rate

단기통 엔진에서 대유량 EGR을 통한 저온 연소 특성

  • 조상현 (자동차부품연구원 환경시스템연구센터) ;
  • 오광철 (자동차부품연구원 환경시스템연구센터) ;
  • 이춘범 (자동차부품연구원 환경시스템연구센터)
  • Received : 2008.10.28
  • Accepted : 2009.03.20
  • Published : 2009.07.01
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Abstract

Low temperature combustion regime for the simultaneous reduction of nitrogen oxides ($NO_x$) and paticulate matter (PM) is demonstrated in single cylinder engine at various operating parameters, such as EGR rate, injection timing, EGR temperature, amount of fuel and swirl rate. Low temperature combustion is accomplished by high exhaust gas recirculation (EGR) rate in this study. Generally, the emission of $NO_x$ almost completely disappears and PM significantly increases in the first decreasing regime of oxygen concentration but after peaking about 10~12% oxygen concentration, PM then decreases regardless of fuel injection quantity. Low temperature combustion regime was extended by low EGR temperature, high injection pressure and low amount of fuel.

Keywords

References

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