活塞“偏缸”是发动机常见的故障之一。所谓“偏缸”,就是发动机运转时,活塞在气缸内偏于一侧不正常地进行往复运动。活塞连杆组在装配中,如各零件形位误差不符合技术要求,将使活塞在气缸中产生歪斜。当活塞在气缸中的偏斜量在100毫米长度上为0.03毫米时,活塞对缸壁的压力可达147牛,而在发动机装配后转动曲轴时,所需的力矩将成倍增加,达到196—245牛米。“偏 Piston “partial cylinder” is one of the common engine failures. The so-called “partial cylinder”, that is, the engine is running, the piston in the cylinder to one side of the abnormal reciprocating motion. Piston rod assembly in the assembly, such as the shape of the various parts of the error does not meet the technical requirements, will make the piston in the cylinder skew. When the piston deflection in the cylinder is 0.03 mm over a length of 100 mm, the pressure on the cylinder wall of the piston can reach 147 N and the required torque momentarily increases to 196 when the crankshaft is rotated after assembly of the engine -245 Nm "Partial