International Journal of Automotive Engineering
Online ISSN : 2185-0992
Print ISSN : 2185-0984
ISSN-L : 2185-0992
Research Paper
Comparison of Power Consumption Efficiency of CVT and Multi-Speed Transmissions for Electric Vehicle
Jiageng RuanPaul WalkerNong Zhang
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JOURNAL OPEN ACCESS

2018 Volume 9 Issue 4 Pages 268-275

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Abstract
Due to the low energy density of electrochemical battery in Electric Vehicles (EVs), the driving range per charge has been limited. However, the widely adopted single reduction gear in EVs typically do not achieve the diverse range of functional needs. Consequently, multi-speed EV powertrains have been compared and investigated for these applications. Through the optimizing of gear ratios, a more diverse range of functional needs can be realized without increasing the practical size of the electric motor. This paper studies the performance improvements realized through utilization of 2-4 speeds and continuously variable transmission. Results demonstrate that there can be significant benefits attained for both small and large passenger vehicles.
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© 2018 Society of Automotive Engineers of Japan, Inc
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