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기어 변속 형태의 변화에 따른 연료소모율 특성에 관한 연구
정성환(Sunghwan Chung),유성관(Sungkwan You),한상명(Sangmyeong Han) 한국자동차공학회 2004 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
To cope with the Green house effect, CO2 regulation is getting started all over the world. Automakers have been trying to find practical way to reduce CO2 from their vehicles. But it takes too much time and money to improve the vehicles effectively. In the case that the gear shift pattern of a manual transmission vehicle isn t determined like Korea & North America, driver's gear shift pattern could cause significant difference in fuel economy as well as CO2 emission. We studied on the effect of fuel consumption rate with the change of gear shift pattern in FTP75 test mode and proposed a method to find optimized shift pattern for maximum fuel economy.
LPG와 가솔린 연료의 차량 배출가스 특성에 대한 비교 연구
정성환(Sunghwan Chung),한상명(Sangmyeong Han) 한국자동차공학회 2002 한국 자동차공학회논문집 Vol.10 No.5
As the interest on the air pollution is gradually rising up at home and abroad, automotive industries have been working on the exhaust emission reduction from vehicles through a lot of approaches, which consist of new engine design, innovative aftertreatment systems, and using clean fuels. Methanol, ethanol, LNG, LPG, H2. reformulated gasoline are generally recognized as the clean fuel. Since the low price policy of government on LPG has expanded its vehicle market recently, there is concern of the exhaust emission of LPG vehicle. In this paper, we studied the value of LPG fuel as a clean fuel by comparing the results of the exhaust emission from LPG and Gasoline fueled vehicles, and discussed its limitation of LPG vehicle with mixer type as a fuel supply system. FTIR was used to understand the difference of exhaust emission components of LPG and Gasoline fueled vehicles.<br/>