发动机气缸体直接与高温、高压气体接触。当活塞高速往复运动时,缸壁工作面承受很大的侧压力及由此产生的周期力作用。如果使用与保养不当,容易造成发动机气缸壁过早磨损。康明斯发动机气缸磨损主要有3个原因。(1)冷却系工作不良如冷却不足,各机件因为高温导致其机械性能降低,同时润滑油在高温下黏度变小,容易使缸壁油膜破裂,润滑恶化,加 Engine cylinder body directly with high temperature, high pressure gas contact. When the piston reciprocating at high speed, the cylinder wall face to withstand a lot of lateral pressure and the resulting periodic force. Improper use and maintenance can easily lead to premature wear of engine cylinder walls. Cummins engine cylinder wear mainly for 3 reasons. (1) cooling system, such as poor work, such as lack of cooling, due to high temperature mechanical parts lead to lower their mechanical properties at the same time the viscosity of lubricating oil at low temperatures, easy to make cylinder wall rupture, lubrication deterioration, plus