本文介绍了一种中、高速柴油机上使用的螺旋弹簧式组合油环的设计依据、计算方法及结构特点,总结了在120型柴油机上的试验结果。新结构油环使用寿命长、机油消耗率低,对气缸套变形的适应性强,它成功地用在三道环结构的活塞上,为柴油机向高速强化方向发展创造了条件。 In this paper, the design basis, calculation method and structural features of a spiral spring combined oil ring used on medium and high speed diesel engines are introduced. The test results on a 120 diesel engine are summarized. The new structure of the oil ring long life, low oil consumption, the deformation of the cylinder liner adaptability, which successfully used in the three-ring piston structure for the diesel engine to strengthen the direction of the development to create the conditions.