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The Influence of Operating Conditions on Fuel Economy of the Hybrid Electric Vehicle  

Lee Youngjae (Transportation Enegy Research Center, KIER)
Kim Gangchul (Transportation Enegy Research Center, KIER)
Pyo Youngdug (Transportation Enegy Research Center, KIER)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.13, no.3, 2005 , pp. 35-40 More about this Journal
Abstract
In the present study, the influence of operating conditions on fuel economy for hybrid electric vehicle was analyzed. In order to accomplish this, vehicle speed, engine speed, battery current and voltage, SOC (state of charge),motor speed and torque, generator speed and torque, engine coolant temperature etc. were measured in real time. The tests were carried out under different driving cycles which are urban and highway cycles, KOREA CITY cycle and on-road driving, and also under various operating conditions such as different initial SOC, with or without regenerative braking etc.. Generally, conventional gasoline engines show a poor fuel economy at stop and go driving, because braking energy is wasted and the engine is operated in low thermal efficiency regions. However, in case of hybrid vehicles, higher fuel economy can be obtained because of utilizing the maximum thermal efficiency regions of engine, idling stop of engine, and regenerative braking etc..
Keywords
하이브리드 자동차;연비;주행모드;초기 충전상태;회생제동;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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