A numerical study for the piston skirt–liner system lubrication is conducted to consider the effects of deformation of the piston skirt and the liner. This study incorporates the thermal and the elastic deformation of the piston skirt and the cylinder liner, and the piston skirt deformations due to the combustion pressure and the piston inertia. The piston dynamics, the oil film pressure and thickness, and the friction loss of the piston skirt–liner system are analyzed. The results show that the deformations all play important roles in the piston skirt–liner lubrication. Considering the deformations of the piston skirt and the cylinder liner is beneficial to the prediction of piston skirt–liner lubrication more accurately.
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