Title: On the transient dynamics of a metal pushing V-belt CVT at high speeds

Authors: Nilabh Srivastava, Imtiaz Ul-Haque

Addresses: Department of Mechanical Engineering, 106 EIB, Clemson University, Clemson, SC-29634, USA. ' Department of Mechanical Engineering, 106 EIB, Clemson University, Clemson, SC-29634, USA

Abstract: A CVT offers a continuum of gear ratios between desired limits. A number of steady-state models have been developed in recent years to explain the dynamics of CVT; however, they are unable to capture the influence of high-speed inertial effects of the belt on the performance characteristics of a CVT. The present research focuses on developing a detailed transient model to explore and understand the various dynamic interactions in a metal pushing V-belt CVT. This paper uses continuous Coulomb friction approximation theory to model friction between the belt and the pulleys. Studies were conducted to observe the influence of inertial and loading conditions on the slip behaviour and torque transmitting ability of the CVT. The computational scheme, the mathematical models, and the results corresponding to different loading scenarios are discussed. The results indicate the significance of inertial effects on the torque transmission characteristics of a CVT.

Keywords: continuously variable transmission; CVT dynamics; metal pushing; transient; V-belt; high speeds; CVT performance; inertial effects; torque transmission.

DOI: 10.1504/IJVD.2005.006088

International Journal of Vehicle Design, 2005 Vol.37 No.1, pp.46 - 66

Available online: 03 Feb 2005

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