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经常有修理工反映,大修出厂的发动机使用不久,或经维护换过活塞环的发动机都有严重窜油的现象。有的经再换环,窜油情况仍不见改观。甚至有些进口车装用进口配件也有此现象。窜油的原因大致有以下几点。1 侧隙和背隙不符合原厂规定一是活塞与环不是同一厂家所生产,加上分组组别的不同,互不匹配;二是活塞与环虽是同一厂所生产,但由于活塞与环变形,以致装配后侧隙及背隙不符合原厂规定(各种车型都有各自的规定,如
Often repair mechanics reflect the overhaul of the factory engine used soon, or by replacing the piston ring engine has a serious phenomenon of channeling oil. Some ring after another change, channeling oil situation still see no change. Some imported cars even imported parts also have this phenomenon. The reason for channeling oil roughly the following points. 1 backlash and backlash does not meet the original requirements First, the piston and the ring is not produced by the same manufacturer, plus the different groups of groups, each other does not match; Second, although the piston and the ring produced by the same plant, but because of the piston and Ring deformation, resulting in assembly backlash and backlash does not meet the original rules (various models have their own rules, such as