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Modeling of Oil Film Thickness in Piston Ring/Liner Interface

Cristiana Delprete and Abbas Razavykia
Politecnico di Torino, Department of Mechanical and Aerospace Engineering, Torino, Italy

Abstract—The correct understanding of piston ring/liner lubrication condition has a primary importance in order to improve internal combustion engine efficiency in terms of oil consumption and friction losses. Analytical and numerical investigation of piston ring-pack becomes then a reliable tool for evaluating piston ring/liner interface lubrication mechanism. Main aim of this paper is to examine the effects of technical aspects, such as ring geometry and operating condition on modeling of piston ring/liner lubrication. An analytical model based on lubrication theory under hydrodynamic regime is here presented and discussed. The model can represent a useful tool for designing low friction engine components and it can be applied to develop reliable friction models to predict actual engine output.

Index Terms—engine, piston ring, modeling, lubrication

Cite: Cristiana Delprete and Abbas Razavykia, "Modeling of Oil Film Thickness in Piston Ring/Liner Interface," International Journal of Mechanical Engineering and Robotics Research, Vol. 6, No. 3, pp. 210-214, May 2017. DOI: 10.18178/ijmerr.6.3.210-214