This paper presents a systematic model for the design and analysis of toroidal traction drive continuously variable transmissions (CVT). The contacts between the input disk, the roller and the output disk of the traction drive are formulated using the classical Hertzian contact theory. The traction force and side slip force occurring in CVT operation are modelled based on the elasto-hydrodynammic theory and are correlated to the traction drive geometric and kinematic parameters. The model allows for the quantitative analysis of traction drive operation under various torque inputs and over the desired ratio range. [S1050-0472(00)01004-7]

Issue Section:
Technical Papers
Keywords:
vehicles, traction, design engineering, mechanical contact, slip, torque
Topics:
Rollers, Traction, Kinematics, Disks, Torque
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Copyright © 2000
 by ASME
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