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Energy Efficiency of Series Hybrid Electric Vehicles
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 02, 2012 by SAE International in United States
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This study presents the evaluation of the energy efficiency of a series hybrid electric vehicle through the theoretical development of two electric propulsion systems and an experimental study of fuel consumption of the original vehicle. The experimental analysis was done by a test setting, consisting mainly of a chassis dynamometer, an autopilot system and a fuel flowmeter, all connected to the data acquisition system. In this study it was developed two theoretical models of propulsion systems for Series - HEV. The first one consists of four in-wheel motors and the second one consists of two in-wheel motors on the rear axle. There are various methods for embedding a motor in the wheel. It is necessary to consider the weight, power and transmission efficiency. In the theoretical model it was considered a cycloidal reducer, which allows a reduction of 3:1 to 119:1 in one stage with an efficiency of 93%, together with a brushless DC motor, which has a high power density. The results of the evaluation of the electric propulsion systems show that the model with four in-wheel motors is more efficient than the model with two in-wheel motors. This is a consequence of the fact that the second model is heavier, because it needs a bigger amount of batteries and more robust motors. In the evaluation of the HEV energy consumption compared with the original gasoline model, it was observed interesting results regarding the energy savings. The HEV presents better performance in urban cycles that in road cycles, saving 57,6% of the consumed energy in urban cycles and 11,4% in road cycles.
CitationSanchez, F. and Braga, S., "Energy Efficiency of Series Hybrid Electric Vehicles," SAE Technical Paper 2012-36-0105, 2012, https://doi.org/10.4271/2012-36-0105.
- Ministério de Minas e Energía, “Balanço Energético Nacional 2010”, vol. 1, pp. 1-276, 2010.
- Ehsani, M., Rahman, K. M. and Toliyat, H. A., “Propulsion System Design of Electric and Hybrid Vehicles”, IEEE Transactions on Industrial Electronics, vol. 44, no. 1, pp. 19-27, February 1997.
- Pulkrabek, W. A., “Engineering Fundamentals of the Internal Combustion Engine”, Ed. 1, Simon and Schuster Adult Publishing, New York - USA, 1997, 411p.
- Ehsani, M., Gao, Y. and Emadi, A., “Modern Electric, Hybrid Electric, and Fuel Cell Vehicles: Fundamentals, Theory, and Design”, Ed. 1, CRC Press Taylor and Francis Group, Florida - USA, 2009, 557p.
- Suzuki, M. and Wang, D., “Development of In-Wheel Type Integrated Motor Axle Unit”, NTN Technical Review, vol. 73, pp. 56-59, 2005.
- Suzuki, M., Sakai, K., Okada, K. and Makino, Y., “Development of an In-Wheel Motor Axle Unit”, NTN Technical Review, vol. 75, pp. 46-52, 2007.
- Sumitomo, “Catalog 03.60150.007 - Cyclo 600, speed reducers”, Sumitomo Machinery Corporation of America, 2010.
- Pereira, A. M. “Fuel Cell Hybrid Electric Bus Powertrain”, M.Sc. Dissertation, Universidad Federal do Rio de Janeiro, Rio de Janeiro - Brazil, 2007.