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内燃机车柴油机气缸套是在高的热强度和机械强度条件下工作。气缸套中的燃气压力达到13兆帕,并在柴油机工作时发生周期变化。活塞的热交换和对气缸壁的动力作用以及气缸套振动都会引起疲劳、穴蚀和摩擦腐蚀过程、表面变形以及严重磨损。气缸套的大部分故障都与过早磨损、拉缸损坏和出现疲劳裂纹有关。几乎所有柴油机的气缸套都是因疲劳裂纹所损坏的,但只是发生的频繁程度不同而已。Д50型柴油机的气缸套上疲劳裂纹发生在凸缘的下面,而11Д45型柴油
Diesel engine cylinder liner for diesel locomotives is operated under high thermal and mechanical strength. Gas pressure in the cylinder liner reached 13 MPa, and cycle changes occur while the diesel engine is operating. Piston heat exchange and the power of the cylinder wall and cylinder liner vibration can cause fatigue, cavitation and friction corrosion process, the surface deformation and severe wear and tear. Most of the cylinder liner failures are associated with premature wear, cylinder damage and fatigue cracks. Almost all of the diesel engine cylinder liner is damaged by fatigue cracks, but only the frequency of occurrence of different. Д50-type diesel engine cylinder liner fatigue cracks occur below the flange, and 11Д45-type diesel