活塞和缸套孔中心线空间位置尺寸链计算

Dimensional Train Calculation of the Central Line in Space Posotion in Piston and Cylinder Sleeve Hole

用概率法对柴油机活塞和缸套孔中心线空间位置尺寸链进行了分析并作了计算尝试，进行在理论上判断，给出的公差性合理。

Applying the probability method to the dimensional train analysis of the central line in space position of the poston and the cylinder sleeve hole in a diesel engine, its trial calculation is made here in the paper, with a theoretical judgement carried out and the tolerance concerned being given reasonably as well in the paper.