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On the effect of DLC and WCC coatings on the efficiency of manual transmission gear pairs

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journal contribution
posted on 27.04.2020 by Angela Laderou, Mahdi Mohammad-Pour, Stephanos Theodossiades, Richard Daubney, Gareth Meeks
An experimentally validated tribo-dynamic model has been developed to predict the gear teeth frictional losses considering the properties of the diamond-like-carbon (DLC)-coated and tungsten carbide carbon (WCC)-coated surface. The operating conditions used are snapshots of the Real Driving Emissions (RDE) driving cycle. The results demonstrate that the use of these coatings can improve the frictional losses up to 50%. The gear teeth boundary friction model is enriched by experimentally measured coefficients of the surface asperity boundary shear strength using an atomic force microscope (AFM). The computationally efficient model enables the efficiency prediction in a complete transmission. Such an approach, considering the contact mechanics of coated gear and their effect on the viscous and boundary friction, has not been hitherto reported.

Funding

Ford Motor Company

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

Applied Sciences

Volume

10

Issue

9

Publisher

MDPI AG

Version

VoR (Version of Record)

Rights holder

© The Authors

Publisher statement

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

Acceptance date

22/04/2020

Publication date

2020-04-29

Copyright date

2020

eISSN

2076-3417

Language

en

Depositor

Dr Mahdi Mohammad Pour. Deposit date: 23 April 2020

Article number

3102

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