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서충열(Chungyoul Seo),곽순철(Soonchul Gwoak),박정민(Jungmin Park),강대일(Daeil Kang),임윤성(Yunsung Lim),황춘식(Chunshik Hwang) 한국자동차공학회 2005 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2005 No.11_1
Bio-diesels are getting interest recently because of there low environmental impact when used as alternative fuels for diesel engines. Futhermore, the engines would not require any significant modification. The tested diesel engine was fueled on blends of 5 and 20% soybean bio-diesel/ultra low sulfur diesel(ULSD)fuel. The emissions were analyzed for the regulated items such as CO, NOx, HC, and PM. The results of 5% biodiesel reduced carbon monoxide(CO) and nitrogen oxides(NOx) comparing to ULSD. while total hydrocarbons(THC) were increased. The addition of 20% bio-diesel(BD20) to ULSD has reduced carbon monoxide(CO), total hydrocarbons(THC) and particulate matter(PM) except nitrogen oxides(NOx) that was increased.
곽순철(Soonchul Gwoak),서충열(Chungyoul Seo),강대일(Daeil Kang),박정민(Jungmin Park),임윤성(Yunsung Lim),황춘식(Chunshik Hwang) 한국자동차공학회 2005 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2005 No.11_1
GTL(Gas-to-Liquids) technology converts natural gas, coal and biomass feedstocks into diesel or kerosene by Fisher-Tropsch synthesis. These synthetic diesel fuels display very high cetane value, low density, free sulfur and aromatics contents and autoignition characteristics. These properties make it potentially valuable as a diesel fuel with lower emissions than conventional diesel. GTL therefore is a promising alternative fuel because it can be used in unmodified diesel engines or vehicle fuel systems. The study regarding regulated emissions(CO, NOx, HC, PM) by light-duty vehicle on Shell GTL(SMDS) described reduction rate of exhaust gas of GTL compare to conventional diesel.
곽순철(Soonchul Gwoak),서충열(Chungyul Seo),강대일(Daeil Kang),이태우(Taewoo Lee),신창현(Changhyun Shin),황춘식(Chunsic Hwang),안재국(Jackook Ahn),김성민(Seongmin Kim) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Exhaust emissions of automobile and performance of after-treatment system are impacted by chemical composition of fuel and engine lubricant. Especially, sulfur in fuel and engine lubricant is known to poison oxidation catalyst. Therefore, in this study, we analyzed sulfur of domestically-distributed engine oil for diesel-fuelled vehicle by Energy Dispersive X-ray Fluorescence Spectrometry method, Then, we obtained that the sulfur content of domestically-distributed lubricants for diesel-fuelled vehicles has possibility of impact on exhaust emissions and after-treatment system.
곽순철(Soonchul Gwoak),서충열(Chungyul Seo),강대일(Daeil Kang),박정민(Jungmin Park),임윤성(Yoonsung Yim),황춘식,엄명도(Myoungdo Eom),김종춘(Jongchoon Kim),이영재(Youngjae Lee),표영덕(Youngdug Pyo),정충섭(Choongsub jung),장은정(Eunjung J 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Biodiesel and GTL which are getting interest recently because of there low environmental impact when used as alternative fuels for diesel engines. Futhermore, the engines would not require any significant modification. The tested diesel engines were fueled on blends of synthetic fuels/ultra low sulfur diesel fuel(ULSD). The authors studied regulated emissions(CO, NOx, HC, PM) of diesel alternative fuels using light-duty vehicles and described reduction rate of exhaust emissions of alternative fuels compare to conventional diesel.