目 前 ,绝大部分重型汽车发动机的缸套和活塞都采取传统的设计方式 ,以至于大修的时候需要按照修理尺寸法 ,先量缸、确定修理尺寸、选择活塞组 ,后镗削气缸 ,再选择各缸活塞 ,最后磨削气缸。不仅需要镗缸、磨缸等专用设备 ,而且工艺复杂 ,技术要求高 ,质量难于保证 ,造成大修不 At present, the vast majority of heavy-duty truck engine cylinder liner and piston are taken to the traditional design, so that when overhauling the need to repair dimensions, first measuring cylinder, determine the repair size, select the piston group, after boring cylinder, and then select Each cylinder piston, the last grinding cylinder. Not only need boring cylinder, grinding cylinder and other special equipment, but also complex technology, high technical requirements, quality is difficult to guarantee, resulting in overhaul