Journal of Advanced Marine Engineering and Technology

The Korean Society of Marine Engineering (한국마린엔지니어링학회)
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Effects on Exhaust Gas Emission in Combined EGR System of Gas Engine and Diesel Engine

가스엔진과 디젤엔진의 혼합 EGR시스템이 배기배출물에 미치는 영향

  • 유동훈 (고베대학교 해사과학연구과) ;
  • 서전수신 (고베대학교 해사과학연구과) ;
  • 임재근 (군산대학교 동력기계시스템공학)
  • Published : 2009.09.30
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Abstract

EGR is applied in order to lower temperature of combustion chamber by using the specific heat of carbon dioxide in engine exhaust gas. However, the problem of EGR system in diesel engine is high PM concentration. Combined EGR system can be reduced it by mixing exhaust gas of gas engine into the intake air of diesel engine. This experimental study was designed for EGR system for both engines use. The results of EGR experimental study by using diesel engine and gas engine are as follows. 1) The pressure of combustion and rate of heat release decreased. 2) The specific fuel consumption increased. But, up to middle load, it little increased. 3) NO concentration has decreased up to 50% in almost all combustion area. 4) The variation of the PM concentration at low load is not so seen. But at high load, PM increased rapidly when concentration of oxygen is decreased and most of it caused the increasing of Dry Soot.

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References

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