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我们发现不少农村送来修理的,或我们自己大修的柴油机,在更换气缸套后,运转不了多长时间,就发生气缸套“刷台”事故(即在气缸套上部的台肩处,整齐地断裂)。开始的现象是水温上升,出水管中有气体冲出,如发现或停车不及时,往往在几分钟内,因断裂后的气缸套下沉,气缸套上下两节错位.失去定位,致使缸套、机体给活塞撞碎,连杆被顶弯,甚至折断曲轴,造成严重事故。开始,有人认为是气缸套质量不好,或是在水温低时发动机负荷过大,转速过高。因此对于换修的气缸套我们都进行了严格检查,使用时也注意了发动机的水温情况。但是,气缸套断裂的情况还是发生,有的柴油机在装配后,仅运转十多个小时.气缸套台肩
We found that many rural areas sent to repair, or our own overhaul of the diesel engine, the cylinder liner replacement, the operation does not take long time, the cylinder liner “brush station” accident (that is, in the upper cylinder liner shoulder , Neatly broken). The beginning of the phenomenon is the water temperature rise, the water out of the tube out of gas, such as found or parking is not timely, often within a few minutes, due to rupture of the cylinder liner sinking up and down two sections of the wrong position. Lost position, resulting cylinder liner , The body crashed into the piston, connecting rod is bent, or even break the crankshaft, causing serious accidents. At first, some people think that the quality of the cylinder liner is not good, or when the water temperature is too low, the engine load is too high and the speed is too high. So for the repair of the cylinder liner we have conducted a rigorous examination, the use of the engine also pay attention to the water temperature. However, the case of cylinder liner rupture still occurs, and some diesel engines only operate after assembly for more than ten hours.