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논문 기본 정보

자료유형
학술대회자료
저자정보
위효성 (아주대학교) 김우석 (현대자동차) 박진일 이종화 (아주대학교) 박경석 (금오공과대학교)
저널정보
한국자동차공학회 한국자동차공학회 추계학술대회 및 전시회 2010년 한국자동차공학회 학술대회 및 전시회
발행연도
2010.11
수록면
300 - 309 (10page)

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A vehicle thermal management system(VTMS) will become increasingly important in the face of the saving of natural resources. It was published many times about VTMS on the focus of single system like electric water pump, magnetic fan clutch, water-cooled charged air cooler(WCAC), 2-stage EGR and so on. In this study, we proposed a total thermal management system including control activities of a coolant circuit, a engine oil, a T/M oil, an axle oil and an low temperature intake cooling system. When it comes to higher temperature of engine oil, we consider the low viscosity oil with special additives like friction modifier. In the case of same engine oil, oil temperature varies the viscosity of the oil. And this tendency is similar in the case of transmission oil and axle oil. Firstly, we have checked the effect of temperature of the oil and friction modifier on friction using a chassis dynamometer. And then, we also try to find correlations between friction at the engine, axle, transmission and fuel economy respectively, using a highway bus. In order to accomplish the higher temperature control methodology, we have to make the coolant temperature higher. In addition, as applying a low temperature coolant circuit, it could be possible to reduce the intake temperature-one of the factor to improve a vehicle fuel economy. And then we suggest the new methodology-model based VTMS control-to improve fuel economy of bus applying additional electro-mechanical equipment on a conventional bus. And also we remodel the bus and test it with the chassis dynamometer. Additionally we perform the experiment on a real road. With these equipments we achieved 4.90% improvement of a fuel economy on 10L diesel bus.

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UCI(KEPA) : I410-ECN-0101-2013-556-001769202