In order to study the effects of surface texture on the tribological performances of pis-ton skirt and cylinder liner, we fabricated dimple patterns with four different diameters and five different depths on the piston skirt by micro-electrolytic machining. A reciprocating tester was developed to simulate the motion state in the engine. The friction tests between the piston skirt (upper specimen) and the liner (lower specimen) were carried out on the rig. The results show that the surface texture has an obvious friction reduction effect, and the texture with the diam-eter of 250 μm and depth of 5 μm could reduce the friction coefficient by 37.8% on the condi-tion of 200 N and 200 r/min. Wear tests indicates that the surface texture plays an important role in wear resistance.
NETL
NSTL
万方数据
维普
