Mutual influence of crosshatch angle and superficial roughness of honed surfaces on friction in ring-pack tribo-system

Abstract

The cylinder bore surface texture widely produced by honing technique, is an essential factor for a good engine performance (friction, oil consumption, running-in, wear…). This explains the improvement and development of various new honing techniques. These different honing processes generate surfaces with various texture features characteristics (roughness, valleys depth, crosshatch angle…). This paper addresses a comparison of ring-pack friction for cylinder surfaces produced respectively by plateau honing and helical slide honing. It takes in consideration the mutual effect of superficial plateau roughness amplitude and honing angle. A numerical model is developed to predict friction within the cylinder ring-pack system in mixed lubrication regime. The results show the effectiveness of helical slide honed surface texture in comparison to plateau honed bore surfaces.