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고압분사 방식 디젤기관에서 바이오디젤유와 EGR 방법 적용에 대한 실험적 연구
오영택(Y. T. Oh),최승훈(S. H. Choi),김만복(M. B. Kim),김남호(N. H. Kim),권규식(K. S. Kwon) 한국동력기계공학회 2006 한국동력기계공학회 학술대회 논문집 Vol.- No.-
Our environment is faced with serious problems related to the air pollution from automobiles in these days. In particular, the exhaust emissions of diesel engine are recognized main cause which influenced environment strong. In this study, the potential possibility of biodiesel fuel was investigated as an alternative fuel for a naturally aspirated common rail diesel engine. The smoke emission of biodiesel fuel 5vol-%(min. content) was reduced in comparison with diesel fuel, that is, it was reduced approximately 60% at 4000rpm, full load. But, power, torque and brake specific energy consumption didn't have no large differences. But, NOx emission of biodiesel fuel was increased compared with a commercial diesel fuel. Also, the effects of exhaust gas recirculation(EGR) on the characteristics of NOx emission has been investigated. It was found that simultaneous reduction of smoke and NOx was achieved with biodiesel fuel (5vol-%) and cooled EGR method(5-1O%) in a common rail diesel engine.
IDI 디젤기관에서 함산소연료와 배기가스 재순환 방법 적용에 의한 매연과 NOx의 동시저감 연구
오영택(Y. T. Oh),김건회(G. H. Kim),권규식(K. S. Kwon),최승훈(S. H. Choi) 한국동력기계공학회 2005 한국동력기계공학회 학술대회 논문집 Vol.- No.-
In this paper, the effect of oxygen component in fuel on the exhaust emissions has been investigated for an indirect injection diesel engine. It was tested to estimate change of engine performance and exhaust emission characteristics for the commercial diesel fuel and oxygenated blended fuel which has four kinds of mixed ratio. And, the effects of exhaust gas recircu1ation(EGR) on the characteristics of NOx emission have been investigated. Ethylene glycol mono-n-butyl ether(EGBE) contains oxygen component Z7% in itself, and it is a kind of effective oxygenated fuel of mono-ether group that the smoke emission of EGBE is reduced remarkably compared with commercial diesel fuel, that is, it can supply oxygen component sufficiently at higher loads and speeds in diesel engine. It was found that simultaneous reduction of smoke and NOx was achieved with oxygenated fuel(10vol-%) and cooled EGR method(10%).