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

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Leighton, M, Rahmani, R and Rahnejat, Homer ORCID: 0000-0003-2257-7102 (2016) Surface-specific flow factors for prediction of friction of crosshatched surfaces. Surface Topography: Metrology and Properties, 4 (1).

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Official URL: http://dx.doi.org/10.1088/2051-672X/4/2/025002

Abstract

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.

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