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Friction Characteristics Analysis for Clamping Force Setup in Metal V-Belt Type CVT
Technical Paper
2005-01-1462
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In order to increase the transfer efficiency in a metal V-belt type CVT (Continuously Variable Transmission), it is effective to lower belt clamping force from a current setting value. However, setting the clamping force too low will cause a macro slip (large belt slip). Thus, in order to set the clamping force to the proper level, the friction characteristics between the belt and the pulley (belt friction characteristics) must be understood in detail, and the macro slip threshold must be defined. In this paper, we shall propose a friction expression model for a metal V-belt type CVT and use this model to explain the speed reducing ratio dependence and speed dependence of the maximum friction coefficient (μmax). We shall also define the macro slip threshold in torque fluctuation environment.
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Citation
Nishizawa, H., Yamaguchi, H., Suzuki, H., Osawa, M. et al., "Friction Characteristics Analysis for Clamping Force Setup in Metal V-Belt Type CVT," SAE Technical Paper 2005-01-1462, 2005, https://doi.org/10.4271/2005-01-1462.Also In
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References
- Kobayashi D. et al. “A Study on the Torque Capacity of a Metal Pushing V-Belt for CVTs” SAE Paper, 980822 1998
- “Standard Test Method for Calibration and Operation of the Falex Block-on-Ring Friction and Wear Testing Machine” 1998