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This paper aims to study the effect of piston skirt design parameters on the dynamic characteristics of a piston–cylinder contact.

This paper focuses on an analysis of the piston dynamic response. The oil-film pressure and the structural deformation were approximated, respectively, by finite difference method and finite element method.

The results show that the design parameters such as clearance, offset and the axial location of piston pin have a great influence on the dynamics of the piston and hence on the piston slap phenomenon and the frictional power loss.

All the results mainly focus on the slap noise of the engine and can be used in the piston–liner development at the development of the engine.