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随着内燃机向高速高负荷的方向不断发展,其性能指标也不断提高,内燃机的关键部件——活塞环组经常在非常苛刻的条件下工作。为了满足这些条件,必须对活塞环的各道环的结构进行改进。近年来,研制了内撑螺旋弹簧结构的镀铬油环、桶面环及锥面环等,使机油耗得到很好的控制,还延长整个环组的使用寿命。这种新型结构活塞环(镀铬内撑环)的精度要求很
As the internal combustion engine continues to develop in the direction of high-speed and high-load, the performance index is continuously improved. The key components of the internal combustion engine, the piston ring unit, often work under very harsh conditions. In order to satisfy these conditions, the structure of each ring of the piston rings must be improved. In recent years, we have developed chrome-plated oil rings, barrel-surface rings and cone-shaped rings that support the coil spring structure, so that the fuel consumption is well controlled and the service life of the entire ring set is prolonged. The accuracy of this new type of structural piston ring (chrome-plated inner ring) is very high