对磨合过程中缸套表面形貌的变化进行了观测，发现其为原始表面形貌逐渐被新表面形貌取代的过程，最终表面形貌由缸套的磨损和润滑条件决定；建立了模拟磨合过程中缸套表面形貌变化的计算机仿真模型，仿真结果和试验现象吻合较好 The changes of the surface morphology of the cylinder liner in the running-in process were observed and found that the surface morphology of the liner was gradually replaced by the new surface morphology. The final surface morphology was determined by the wear and lubrication conditions of the liner. Computer simulation model of the change of surface morphology of cylinder liner during the process, the simulation results are in good agreement with the test results