通过内燃机热力学建模,考察了两类典型的磨损情况对整机性能的影响:一类是由于磨损和变形而引起的气门间隙变化(进而导致气门升程变化),另一类是由于缸套-活塞组件之间的磨损而引起的漏气间隙变化.通过分析可知,发动机在运行中的磨损等结构退化现象使发动机的性能大幅下降.因此,应当在设计阶段通过抗磨损的摩擦学设计等手段,延长关键部件的正常工作寿命. Through the thermodynamic modeling of the internal combustion engine, the impact of two typical types of wear conditions on the performance of the whole machine was investigated: one is the variation of the valve clearance due to wear and deformation (which in turn leads to the variation of the valve lift), and the other is due to the liner - Piston assembly wear caused by the leakage gap changes.Analysis shows that the engine in the operation of the wear and tear and other structural degradation of the performance of a substantial decline in the engine.Therefore, should be designed through the wear-resistant tribology design Means to extend the normal working life of key components.