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바이오디젤유를 적용한 CRDI 방식 상용 디젤기관의 내구특성 연구
김종열(Jonglyul Kim),최승훈(Seunghun Choi),오영택(Youngtaig Oh),김건회(Gunhoi Kim) 한국자동차공학회 2005 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2005 No.11_1
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 has influenced environment problem. In this study, a common rail diesel engine was fueled with 5% biodiesel fuel(BDF 5) in excess of 150 hours. Engine dynamometer testing was completed at regularly scheduled intervals to investigate the engine performance and exhaust emissions. The engine performance and exhaust emissions were sampled at 1 hour intervals for analysis. When CR야 diesel engine runs on BDF 5% for long time, power and energy consumption of the engine arc similar to the case using diesel fuel, though there is difference of calorific value of Biodiesel fuel. The smoke emission of biodiesel fuel 5vol-% was reduced in comparison with diesel fuel, that is, it was reduced approximately 15% at 4000rpm, load 90%, also CO and CO₂ were reduced. On the other hand, NOx emission of biodiesel fuel was slightly increased. but it was almost same as commercial diesel fuel.
간접분사식 디젤기관에서 모노에테르계열 함산소연료의 적용에 관한 연구
오영택(Youngtaig Oh),최승훈(Seunghun Choi),권규식(Kyusic Kwon),김창영(Changyoung Kim),김종열(Jonglyul Kim) 한국자동차공학회 2004 한국자동차공학회 지부 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 recirculation(EGR) on the characteristics of NOx emission have been investigated. Ethylene glycol mono-n-butyl ether(EGBE) contains oxygen component 27% 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 and cooled EGR method.
4기통 IDI 디젤기관에서 함산소성분 혼합연료의 적용에 관한 실험적 연구
오영택(Youngtaig Oh),최승훈(Seunghun Choi),권규식(Kyusik Kwon),김종열(Jonglyul Kim) 한국자동차공학회 2005 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2005 No.5_1
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 recirculation(EGR) on the characteristics of NOx emission have been investigated. Ethylene glycol mono-n-butyl ether(EGBE) contains oxygen component 27% 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 and cooled EGR method.