Influence of a New Type of Two-Speed Planetary Gear Automatic Transmission on the Performance of Battery Electric Vehicles

Wei Zhang, Jue Yang and Wenming Zhang
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Wei Zhang: School of Mechanical Engineering, Anhui Science and Technology University, Chuzhou 233100, China
Jue Yang: School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China
Wenming Zhang: School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China

Energies, 2022, vol. 15, issue 11, 1-16

Abstract: This paper introduces a new two-speed planetary gear automatic transmission using an electronically controlled wedge clutch. In order to verify the feasibility of using this transmission in pure electric vehicles, the influencing factors of the two-speed transmission due to the increase in mass and the reduction in transmission efficiency are introduced. The vehicle simulation model was established on the MATLAB/Simulink platform, and the dynamic programming method was used to optimize the transmission ratio and shifting law. The simulation results show that the use of a two-speed automatic transmission can effectively improve the economic performance and dynamic performance of battery electric vehicles.

Keywords: battery electric vehicle; wedge clutch; automatic transmission; dynamic programming; transmission ratio; shift schedule (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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