INFLUENCE OF PISTON SKIRT PROFILES ON TRIBOLOGICAL PERFORMANCE IN PISTON ELASTOHYDRODYNAMIC LUBRICATION

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TitreINFLUENCE OF PISTON SKIRT PROFILES ON TRIBOLOGICAL PERFORMANCE IN PISTON ELASTOHYDRODYNAMIC LUBRICATION
Publication TypeCommunication International
Year of Publication2012
AuthorsAbbés, MTahar, MASPEYROT, P, Hajjam, M, Benbrik, M
Abstract

Curved-shaped skirt profiles of piston in elastohydrodynamic lubrication piston are analyzed in this study. In order to maintain piston in the best performance characteristics an optimum skirt profile is determinate by using the best performance characteristics- minimum oil-film thickness, maximum pressure in the lubricant film and friction. The piston elastohydrodynamic is analyzed as a complementarity problem for solving cavitation in the lubricant-film. The iterative Newton-Raphson method, in conjunction with Murty’s algorithm for cavitation, was used to solve the problem. The computational work presented should be a powerful design analysis tool, which can be used to increase the available engine power through optimum piston performance characteristics.

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