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Asperity level frictional interactions of cylinder bore materials and lubricant composition

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posted on 13.01.2020 by Michael Forder, Jamal Umer, Nick Morris, Ramin Rahmani, Sebastian Howell-Smith, Homer Rahnejat
Parasitic frictional losses in internal combustion engines of race vehicles adversely affect their performance. A significant proportion of these losses occur within the piston-cylinder system. This paper presents a study of the compatibility of cylinder bore surface materials with typical lubricant base constituent stock (Poly Alpha Olefin (PAO) and Polyolester (POE)) as well as a fully formulated lubricant. Nanoscale boundary friction is measured using lateral force microscopy. The effect of material properties, nanoscale roughness and lubricant species upon underlying mechanisms of generated friction is presented. Advanced cylinder materials and coatings and lubricant molecular species used for high performance engines are investigated, an integrated approach not hitherto reported in literature.


Funding

Capricorn Automotive and the Engineering and Physical Sciences Research Council (EPSRC) under the DTP scheme

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology

Publisher

SAGE Publications

Version

VoR (Version of Record)

Rights holder

© IMechE

Publisher statement

This is an Open Access Article. It is published by Sage under the Creative Commons Attribution-NonCommercial 4.0 International Licence (CC BY-NC). Full details of this licence are available at: https://creativecommons.org/licenses/by-nc/4.0/

Acceptance date

18/12/2019

Publication date

2020-02-04

Copyright date

2020

ISSN

1350-6501

eISSN

2041-305X

Language

en

Depositor

Dr Nick Morris. Deposit date: 13 January 2020

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