4115柴油机使用1～2年后,就会出现缸套穴蚀,个别严重的发生穿孔漏水;使用2～3年后,也因缸体阻水圈槽底产生蚀坑而使阻水圈封水失效。缸套和缸体的这种损坏,不是由于材料或铸造缺陷所造成,而是属于一种穴蚀损坏。柴油机缸体、缸套穴蚀的主要机理是:发动机工作中,活塞作上下往复运动,当活塞到达上止点时,由于侧推力的作用方向发生变化,活塞从缸套的一面转靠到对面,以很高的速度冲击气缸壁,从而使缸套产生高频振动。当活塞与缸套间的间隙及侧推力愈大 4115 Diesel engine use 1-2 years later, there will be cylinder liner cavitation, some serious perforation leakage occurs; use 2 to 3 years, but also because of the cylinder block the bottom of the water ring corrosion pits and water blocking ring sealing water Failure. This damage to the liner and cylinder is not due to material or casting defects, but to a cavitation damage. Diesel engine cylinder, cylinder cavitation cavitation main mechanism is: the engine work, the piston up and down reciprocating motion, when the piston reaches the top dead center, due to the action of the side thrust changes direction, the piston from the cylinder side turned to the opposite , Impacting the cylinder wall at a high speed, causing the cylinder liner to vibrate at high frequencies. When the piston and cylinder liner between the gap and lateral thrust greater