2011년 한국자동차공학회 부문 학술대회 일시 : 2011년 11월 23~25일 장소 : DCC (대전컨벤션센터) 주관 : 한국자동차공학회
Abstract : The effects of equivalence ratio on combustion and emissions characteristics were investigated in a compression ignition engine using simulated-EGR by diesel fuel. In order to analyze the effects of simulated exhaust gas recirculation, as a diluent almost pure carbon dioxide gas was supplied to reduce oxygen concentration at a surge tank. For investigating the effects of simulated-EGR on the combustion and emissions characteristics, the combustion characteristics for the variation of equivalence ratio were measured and analyzed in a single-cylinder diesel engine with a compression ratio of 17.3 and a displacement volume of 373.3cc. With the exhaust emission characteristics, nitrogen oxides (NOX), carbon monoxide (CO) and hydrocarbon (HC) were measured by exhaust gas analyzer under the various simulated-EGR ratios. The experimental results show that maximum IMEP was measured at BTDC 5° and the IMEP was gradually reduced as advanced injection timing. NOX emissions decreased dramatically with the increase of equivalence ratio and it was almost not produced at the range from 0.8 to 1.0 of equivalence ratio..
Key words : Simulated EGR (Simulated Exhaust Gas Recirculation), Stoichiometric combustion (이론 공연비 연소), Air/fuel ratio (공연비), Equivalence ratio (당량비)
논문제목 : 모사 배기가스 재순환을 이용한 압축착화 엔진 성능 및 배기 특성
저자 : 강민구, 권석주, 차준표, 박성욱, 이창식
발표자 : 강민구
2011년 한국자동차공학회 부문 학술대회
일시 : 2011년 11월 23~25일
장소 : DCC (대전컨벤션센터)
주관 : 한국자동차공학회
Abstract : The effects of equivalence ratio on combustion and emissions characteristics were investigated in a
compression ignition engine using simulated-EGR by diesel fuel. In order to analyze the effects of simulated
exhaust gas recirculation, as a diluent almost pure carbon dioxide gas was supplied to reduce oxygen
concentration at a surge tank. For investigating the effects of simulated-EGR on the combustion and emissions
characteristics, the combustion characteristics for the variation of equivalence ratio were measured and analyzed
in a single-cylinder diesel engine with a compression ratio of 17.3 and a displacement volume of 373.3cc. With
the exhaust emission characteristics, nitrogen oxides (NOX), carbon monoxide (CO) and hydrocarbon (HC)
were measured by exhaust gas analyzer under the various simulated-EGR ratios.
The experimental results show that maximum IMEP was measured at BTDC 5° and the IMEP was gradually
reduced as advanced injection timing. NOX emissions decreased dramatically with the increase of equivalence
ratio and it was almost not produced at the range from 0.8 to 1.0 of equivalence ratio..
Key words : Simulated EGR (Simulated Exhaust Gas Recirculation), Stoichiometric combustion (이론 공연비
연소), Air/fuel ratio (공연비), Equivalence ratio (당량비)