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Analysis of lubricated contact in continuously variable transmissions (CVT)

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conference contribution
posted on 2016-10-05, 13:23 authored by I. Medina Huerta, Mahdi Mohammadpour, Homer Rahnejat
This paper presents a tribological model for a toroidal CVT. The model predicts the lubricant film thickness, viscous and boundary generated friction and the spin power loss in the contact. This is in order to evaluate the effect of different parameters on the efficiency and durability of the CVT system. An optimisation study is carried out to ascertain the effect of contact surface materials, lubricant rheology and contact geometry upon power loss and maximum generated contact pressure. The results show that numerically, even if the contact pressure cannot be significantly reduced, the contact spin power loss can be reduced by as much as 24%., thus improving system efficiency



  • Mechanical, Electrical and Manufacturing Engineering

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PMC2016, Powertrain Modelling and Control


MEDINA HUERTA, I., MOHAMMADPOUR, M. and RAHNEJAT, H., 2016. Analysis of lubricated contact in continuously variable transmissions (CVT). Presented at the 3rd Biennial International Conference on Powertrain Modelling and Control (PMC 2016), Loughborough University, 7-9th Sept.


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  • AM (Accepted Manuscript)

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This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

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Loughborough University