Theoretical analysis on the influence of piston ring-cylinder contact pressure distribution for surface texture

• 1、Institute of Industry and Equipment Technology,Hefei University of Technology, Hefei 230009
• 2、School of Mechanical Engineering,Hefei University of Technology, Hefei 230009

Abstract：In this paper, the contact pressure distribution between a textured cylinder liner and a piston ring is studied based on one-dimensional average Reynolds equations. The simplified analytical relations of the contact pressure distributions for the piston ring/textured cylinder systems with rectangular, triangular and elliptical cylinder-surface textures, respectively, are derived. The numerical results show that the three types of the cylinder surface texture structures have different effects on the contact pressure distributions. The variations of the contact pressures in the textured regions with the rectangular and the triangular textures are seen sharper than those with elliptical textures, indicating that a relatively stable contact pressure distribution could be achieved for the cylinder with elliptical textures.

Keywords： piston ring cylinder liner surface texture contact pressure fluid lubrication model