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The Scientific World Journal
Volume 2014, Article ID 523281, 11 pages
http://dx.doi.org/10.1155/2014/523281
Research Article

On the Mechanical Friction Losses Occurring in Automotive Differential Gearboxes

Haute Ecole d’Ingénierie et de Gestion du Canton de Vaud, Institut COMATEC, Route de Cheseaux 1, 1401 Yverdon-les-Bains, Switzerland

Received 13 August 2013; Accepted 19 October 2013; Published 19 January 2014

Academic Editors: C. W. Leung, F. Liu, and S. J. Rothberg

Copyright © 2014 Grégory Antoni. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

In the automobile industry, the mechanical losses resulting from friction are largely responsible for various kinds of surface damage, such as the scuffing occurring in some mechanical assemblies. These scuffing processes seem to be due to a local loss of lubrication between certain mechanical elements of the same assembly, leading to a sharp increase in the friction, which can lead to a surface and volume damage in some of them, and even can cause, in the worst case, the whole destruction of the mechanical system if it has continued to operate. Predicting and checking the occurrence of this kind of undesirable phenomena, especially in some principal systems of the vehicle, represents nowadays, a crucial challenge in terms of automobile reliability and safety. This study focuses on the mechanical friction losses liable to occur in differential automobile gearboxes, which can lead in the long term to the scuffing of these mechanical systems. The friction losses involved were modeled, using a simple analytical approach, which is presented and discussed.