Surface-specific flow factors for prediction of friction of crosshatched surfaces

Leighton, Michael; Rahmani, Ramin; Rahnejat, Homer

Leighton_M_2016.pdf (2.93 MB)

Surface-specific flow factors for prediction of friction of crosshatched surfaces

journal contribution

posted on 2016-04-07, 13:37 authored by Michael Leighton, Ramin RahmaniRamin Rahmani, Homer Rahnejat

The paper presents a combined numerical and experimental study of generated sliding friction at low sliding speeds and high load intensity, typical of the top compression ring–cylinder liner conjunction at top dead centre in the compression stroke of high performance race engines. Frictional losses in the transition from compression to power stroke represent a significant portion of cyclic cylinder losses. The cylinder liner is cross-hatch honed with non-Gaussian topography, including larger groove features and a fairly smooth plateau roughness. Surface-specific flow factors are derived to closely represent the actual real rough conjunction. The predictions closely agree with the representative reported precision tribometric study of measured friction.

Funding

The authors wish to express their gratitude to the Engineering and Physical Sciences Research Council for the financial support of Encyclopaedic Program Grant: www.encyclopaedic.org, under which this research was carried out. The authors also would like to acknowledge the technical support of industrial partners of Encyclopaedic, particularly Capricorn Automotive Ltd (manufacturers of advanced cylinder liner technology) and Castrol the suppliers of lubricant.

History

School

Mechanical, Electrical and Manufacturing Engineering

Published in

Surface Topography: Metrology and Properties

Volume

4

Issue

1

Citation

LEIGHTON, M., RAHMANI, R. and RAHNEJAT, H., 2016. Surface-specific flow factors for prediction of friction of crosshatched surfaces. Surface Topography: Metrology and Properties, 4, 025002, 18pp.

Publisher

IOP Publishing Ltd.

Version

VoR (Version of Record)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution 3.0 Unported (CC BY 3.0) licence. Full details of this licence are available at: http://creativecommons.org/licenses/by/3.0/

Acceptance date

2016-02-05

Publication date

2016-03-22

Notes

Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.