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RESEARCH PAPERS

Maximum Transmission Efficiency of a Steel Belt Continuously Variable Transmission

[+] Author and Article Information
M. Guebeli, J. D. Micklem, C. R. Burrows

School of Mechanical Engineering, University of Bath, England

J. Mech. Des 115(4), 1044-1048 (Dec 01, 1993) (5 pages) doi:10.1115/1.2919254 History: Received December 01, 1991; Revised February 01, 1993; Online June 02, 2008

Abstract

A mathematical model of the power transmission through a Van Doorne steel belt continuously variable transmission is developed. The approach is based on a simplified viscous oil shear stress model. This enables the determination of the power transmission loss resulting from shearing the oil film along the traction line. The power to maintain the necessary hydraulic clamping forces is taken into account to optimize the power transmission efficiency. The analytical solution is evaluated numerically and compared with experimental results. Variations in the hydraulic pump displacement that are determined by the required ratio adjustment dynamics show that with a sufficiently small pump, peak efficiencies exceeding 97 percent are possible.

Copyright © 1993 by The American Society of Mechanical Engineers
Topics: Steel
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