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Conceptual design of hybrid scooter transmissions with planetary gear-trains

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  • Sheu, Kuen-Bao

Abstract

This paper presents an approach for designing hybrid scooter transmissions with planetary gear trains. The basic concept is to combine two planetary gear trains into a split-power system; so, by incorporating clutches and brakes when engaged, the system becomes a hybrid scooter transmission. The transmissions combine the power from two power sources, a gasoline engine and an electric motor. The systems use four different modes in order to maximize the performance and reduce emissions: electric-motor mode; engine-mode and engine/charging mode; power-mode; and regenerative-braking mode. Kinematic and power flow analyses are performed. According to the analysis results, formulae for the speed ratio of the transmission are derived and a procedure for identifying the arrangements with no internal recirculation of the split power system is developed. Sixteen possible configurations of hybrid scooter transmission satisfying the design requirements are presented. A design example is used to illustrate the design procedure and operation principle of the transmission.

Suggested Citation

  • Sheu, Kuen-Bao, 2007. "Conceptual design of hybrid scooter transmissions with planetary gear-trains," Applied Energy, Elsevier, vol. 84(5), pages 526-541, May.
    • Handle: RePEc:eee:appene:v:84:y:2007:i:5:p:526-541
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    Citations

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    Cited by:

    1. Hung, Yi-Hsuan & Wu, Chien-Hsun, 2015. "A combined optimal sizing and energy management approach for hybrid in-wheel motors of EVs," Applied Energy, Elsevier, vol. 139(C), pages 260-271.
    2. Chung, Cheng-Ta & Wu, Chien-Hsun & Hung, Yi-Hsuan, 2021. "A design methodology for selecting energy-efficient compound split e-CVT hybrid systems with planetary gearsets based on electric circulation," Energy, Elsevier, vol. 230(C).
    3. Sheu, Kuen-Bao, 2008. "Simulation for the analysis of a hybrid electric scooter powertrain," Applied Energy, Elsevier, vol. 85(7), pages 589-606, July.
    4. Cheng-Ta Chung & Chien-Hsun Wu & Yi-Hsuan Hung, 2018. "Effects of Electric Circulation on the Energy Efficiency of the Power Split e-CVT Hybrid Systems," Energies, MDPI, vol. 11(9), pages 1-15, September.

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