Numerical Investigations of the EHL Performance of the Piston Ring with the Consideration of the Two-dimensional Deformation of the Cylinder Liner

One of the most important research areas in tribology that affects the reliability, fuel economy and emissions of an internal combustion engine is the lubrication and wear of the piston ring - cylinder liner. In this paper, two-dimensional transient EHL analysis is developed for the lubrication analysis of the piston ring with the consideration of the two-dimensional deformation of the cylinder liner. The forming of the lubricant film and the characteristics of the pressure distribution on the piston ring surface are studied. The effects of the deformation of the cylinder liner are discussed. The calculated results show that the EHL performance of the piston ring significantly depends on the deformation of the cylinder liner. The paper may provide some insights for the analysis of the lubrication performance of the piston ring.