气缸套因活塞在不同位置时工作条件的不同，其磨损部位和磨损量都有明显的差别。磨损的一般规律是：活塞在上止点前后8o～12o(曲轴转角)位置时，第1道活塞环与气缸壁的接触部位磨损最严重。在一个大修里程的使用期中，最大径向磨损量可达0.2～0.3 mm。由上向下，磨损量逐渐减小 Cylinder liner due to different working conditions at different positions, the wear parts and wear there are significant differences. The general law of wear is: piston in the top dead center before and after 8o ~ 12o (crank angle) position, the first piston ring and cylinder wall contact parts wear the most serious. In a service life overhaul mileage, the maximum radial wear up to 0.2 ~ 0.3 mm. From top to bottom, wear gradually reduced