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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
1 K. Aitaka, M. Hosoda and T. Nomura, 'Development of Intelligent Power Unit for Hybrid Four-Door Sedan,' Int. J. Automotive Technology, Vol.4, No.2, pp.57-64, 2003
2 M. Duoba, H. Ng and R. Larsen, 'Characterization and Comparison of Two Hybrid Electric Vehicle (HEVS) Honda Insight and Toyota Prius,' SAE 2001-01-1335, 2001
3 '40 CFR (Code of Federal Regulation) Part 600 (Fuel Economy of Motor Vehicles),' Environmental Protection Agency of U.S.A., 2004
4 'Recommended Practice for Measuring the Exhaust Emissions and Fuel Economy of Hybrid-Electric Vehicles,' SAE J1711, 1998
5 G. C. Kim and Y. J. Lee, 'The Influence of Driving Conditions on Fuel Economy and Exhaust Emissions of the Toyota PRIUS HEV,' The 20th International Electric Vehicle Symposium, p.11, 2003
6 National Renewable Energy Laboratory, Benchmarking of OEM Hybrid Electric Vehicles, NREL Milestone Report, p.103, August 2001
7 K. J. Kelly, M. Mihalic and M. Zolot, 'Battery Usage and Thermal Performance of the Toyota Prius and Honda Insight during Chassis Dynamometer Testing,' The 17th Annual Battery Conference on Applications and Advances, p.9, 2002
8 Y. Shida, M. Kanda, K. Ohta, S. Furuta and J. Ishii, 'Development of Inverter and Power Capacitors for Mild Hybrid Vehicle (MHV) Toyota 'Crown',' Int. J. Automotive Technology, Vol.4, No.1, pp.41-45, 2003