DESIGN OF 2-SPEED TRANSMISSION FOR ELECTRIC COMMERCIAL VEHICLE

SHIN, J. W.; KIM, J. O.; CHOI, J. Y.; OH, S. H.

doi:2014.15.1.145

International Journal of Automotive Technology > Volume 15(1); 2014 > Article

Fuel Cell, Hybrid and Electrical Vehicle

International Journal of Automotive Technology 2014;15(1): 145-150.
doi: https://doi.org/10.1007/s12239-014-0016-8

DESIGN OF 2-SPEED TRANSMISSION FOR ELECTRIC COMMERCIAL VEHICLE

J. W. SHIN¹, J. O. KIM², J. Y. CHOI², S. H. OH¹

¹Chung-Ang University
²SPG Co., Ltd.

ABSTRACT

As environmental and economic interests increase, the need for eco-friendly vehicle such as an electric vehicle (EV) has increased rapidly. Various research of enhancing EV powertrain efficiency and relibility have been studied. In this study, 2-speed shift gears mechanism is designed by using simpson type planetary gear train. This transmission has two planetary gear unit. Gear position is determinded by which ring gear is fixed. Internal components of the transmission are designed for satisfying the required specification of EV. We analyze gear strength, gear mesh efficiency, and transmission efficiency. By manufacturing the transmission prototype and performing some experiments, we verify the application suitability of this transmission.

Key Words: Electric vehicle, Transmission, Powertrain, Planetary gear

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