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3리터급 양산차량인 VW LUPO 디젤의 벤치마킹 연구결과
이천환(C. H. Lee),김병수(B. S. Kim),임종순(J. S. Im),강정호(J. H. Kang),이호길(H. K. Lee),김성중(S. J. Kim) 한국자동차공학회 2002 한국자동차공학회 Symposium Vol.2002 No.11
The Lupo 3L TDI model is the world's first-ever production line 3 liter, a milestone of energy<br/> conservation in automobile engineering was tested and benchmarked. this model is high fuel<br/> economy performance in terms of 3liter car level of diesel fueled engine producted in the<br/> world. Some several items were tested compared with korean products. in this paper, the<br/> benchmarking test results are included and described the characteristics of Vehicle components.
3리터급 폭스바겐 루포 디젤 차량의 배출가스 및 연비 특성에 관한 연구
이천환(C. H. Lee),김병수(B. S. Kim),임종순(J. S. Im),노기한(K. H. Noh),이호길(H. K. Lee),김성중(S. J. Kim) 한국자동차공학회 2002 한국자동차공학회 Symposium Vol.2002 No.11
This study include about emission and fuel economy characteristics of the Lupo 3L TDI is the<br/> world's first-ever production-line unit inj ector type 3 liter car. On the results of test, the fuel<br/> economy was below then of volkswagen's reports. But that was very considerable because to<br/> consider the research trend of the vehicle makers, most of all research is focused to reduce<br/> the CO2 and high performance than another advanced vehicle. In case of emission, the test<br/> results was be satisfied with the EURO3 regulation but to be unreliable the EURO4.
[디젤엔진부문] 디젤산화촉매의 열화에 따른 배기가스특성
이호길(H.K.Lee),강정호(J.H.Kang),이천환(C.H.Lee),김병수(B.S.Kim),류명석(M.S.Lyu),여권구(K.K.Lier),류정인(J.L.Lyu) 한국자동차공학회 2000 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Modem diesel vehicle has to comply with the EURO III, IV regulation with very low level of particulate and smoke emission. But diesel engine design technologies are inferior to gasoline engine. Recently, much attention have been focused on diesel exhaust aftertreatment system development. The reducing technologies of exhaust emission for diesel engine classified as common rail, EGR, fuel quality improvement, and development of diesel exhaust aftertreatment. The diesel exhaust aftertreatment technology is considered as the alternative technology in the near future. The diesel exhaust aftertreatment system has been advanced for reducing particulates and emission because it has simple in device structure, relatively low cost and easy to install the vehicle.<br/> In this study it was carried out conversion efficiency test for fresh and aged catalyst. Also it was evaluated the characteristics of exhaust gas and particulate matter emitted from catalyst according to the aging time then particulate matter reduce efficiency due to heat of oxidation reaction at diesel oxidation catalyst(DOC)<br/>
디젤자동차용 SCR 촉매의 저온영역에서 NOx 정화율 개선
서충길(C.-K. Seo),김화남(H. N. Kim),최병철(B. C. Choi),이천환(C. H. Lee),오광철(G. C. Oh),이춘범(C. B. Lee) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5
The purpose of this paper is to perform the optimum contents of ZrO₂ with a promoter to improve NOx reduction activity of a Cu-ZSM-5 catalyst in low temperature below 300℃. NOx conversion of ZrO₂(2wt%) improved to 10∼20% in the temperature range from 200℃ to 300℃ compared to no ZrO₂ loaded SCR catalyst. It is because the NH₃ absorption was improved by acidity strengthening of acid sites of SCR catalyst as well as the improvement of thermal stability by a resonable ZrO₂ loading. The LOT(light-off temperature) 50 of Cu-ZSM-5/ZrO₂(2wt%) appeared at 180℃ that was decreased about 50℃ compared with Fe-Zeolite catalyst. The maximum NOx conversion of Cu-ZSM-5/ZrO₂(2wt%) was obtained 93% at 300℃, however that of Fe-zeolite catalyst was 88% at 350℃.