Title: A new hybrid CVT design: CVPSTs

Authors: Serhan Ozdemir, John Schueller

Addresses: Mechanical Engineering Department, Izmir Institute of Technology, 35437 Izmir, Turkey. Mechanical Engineering Department, Izmir Institute of Technology, 35437 Izmir, Turkey

Abstract: Automotive transmissions match the speed and the torque of the power source to the speed and torque requirements of the load. Properly designed continuously variable transmissions (CVTs) have shown promise to improve efficiency and performance. This work discusses some existing CVTs and proposes a new hybrid continuously variable power split transmission (CVPST). The speed relationships are analysed in power split and power recirculation mechanisms, the problem of geared neutral phenomenon with recirculating transmissions are identified and these two separate issues are left out as a topic for another paper. A new ||all-in-one|| CVPST transmission incorporating power split and power recirculation is proposed.

Keywords: CVPSTs; CVTs; geared neutral; power recirculation; power split.

DOI: 10.1504/IJHVS.2002.001182

International Journal of Heavy Vehicle Systems, 2002 Vol.9 No.4, pp.319-332

Published online: 01 Jul 2003 *

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