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Diamond like-carbon coatings for electric vehicle transmission efficiency

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posted on 2023-09-18, 15:12 authored by E Humphrey, V Elisaus, Ramin RahmaniRamin Rahmani, M Mohammadpour, Stephanos TheodossiadesStephanos Theodossiades, Nick MorrisNick Morris

A barrier to the adoption of battery electric vehicles is consumer range anxiety. This paper investigates the driving range conceded as a result of the parasitic frictional losses incurred at the gear mesh in a two-stage battery electric vehicle transmission. Amelioration of the parasitic losses through changes to surface roughness and application of thin wear resistant coatings such as DLC are considered. The tribo-dynamics model of the gear frictional losses includes topographical structure of the respective surfaces characterised through surface specific fractal parameters. Analysis shows that the use of the investigated amorphous hydrogenated undoped DLC coating could potentially save 1.1 km of vehicle range during extra urban driving and 0.9 km under urban driving over a full battery discharge cycle.

Funding

Engineering and Physical Science Research Council (EPSRC) for the financial support extended to this research through the Doctoral Training Program (DTP)

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

Tribology International

Volume

189

Publisher

Elsevier

Version

  • VoR (Version of Record)

Rights holder

© The Authors

Publisher statement

This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

Acceptance date

2023-08-30

Publication date

2023-09-01

Copyright date

2023

ISSN

0301-679X

eISSN

1879-2464

Language

  • en

Depositor

Dr Ramin Rahmani. Deposit date: 7 September 2023

Article number

108916

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