Numerical analysis of lubrication characteristics of laser texturing on motorcycle cylinder liner surface

In order to improve tribological property of motorcycle engine piston ring and cylinder liner and fuel economy characteristic,the technology of laser surface texturing was used to make regular micro geometric structure on the cylinder liner.The theoretical lubricating model of uniform distribution micro geometric structure in the form of micro pores was developed, including the Reynolds equation, oil-film thickness equation and dynamics equation.The model was solved by means of multi-grid method and the hydrodynamic pressure and oil-film thickness distribution were obtained. The results show that surface texturing can be used to maintain hydrodynamic effects and improve the lubrication performance efficiently, even with nominal parallel surfaces.