This paper presents a motor-integrated transmission mechanism for use in parallel hybrid electric vehicles. The transmission can provide five basic modes of operation that can be further classified into sixteen sub-modes: one electric motor mode, four engine modes, four engine/charge modes, three power modes, and four regenerative braking modes. Each of these sub-modes can be grouped into like clutching conditions, providing the functional appearance of a conventional 4-speed automatic transmission, with electric launch, engine-only, engine/charge, power-assist, and regeneration capability. CVT capability is provided with one of the engine/charge modes. The kinematics, static torque, and power flow relations for each mode are analyzed in detail. Finally, a clutching logic and a notional control strategy are developed. The transmission can be incorporated not only in front-wheel drive but also in rear-wheel drive vehicles. The compactness, mechanical simplicity, and operational flexibility of the transmission make it an excellent candidate for future hybrid electric vehicles.
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September 2004
Technical Papers
A Motor-Integrated Parallel Hybrid Transmission
L. W. Tsai,
L. W. Tsai
Department of Mechanical Engineering, University of California, Riverside, CA 92521
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G. Schultz
G. Schultz
Department of Mechanical Engineering, University of Maryland, College Park, MD 20742
Search for other works by this author on:
L. W. Tsai
Department of Mechanical Engineering, University of California, Riverside, CA 92521
G. Schultz
Department of Mechanical Engineering, University of Maryland, College Park, MD 20742
Contributed by the Mechanisms and Robotics Committee for publication in the JOURNAL OF MECHANICAL DESIGN. Manuscript received May 2002; rev. February 2004. Associate Editor: M. Raghavan.
J. Mech. Des. Sep 2004, 126(5): 889-894 (6 pages)
Published Online: October 28, 2004
Article history
Received:
May 1, 2002
Revised:
February 1, 2004
Online:
October 28, 2004
Citation
Tsai, L. W., and Schultz, G. (October 28, 2004). "A Motor-Integrated Parallel Hybrid Transmission ." ASME. J. Mech. Des. September 2004; 126(5): 889–894. https://doi.org/10.1115/1.1767820
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