不可忽视的两个压缩余量在柴油发动机上，有两个地方存在压缩余量，一是气缸套内活塞的压缩余量，二是柱塞油泵柱塞的压缩余量。这两个间隙都可用软金属片（如保险丝）测得。１．气缸压缩余量气缸压缩余量是指活塞压缩到上止点时，活塞顶部与气缸盖之间的间隙，例如４１２... Two compression margins can not be ignored In the diesel engine, there are two parts of the compression margin, one piston sleeve compression margin, the second is the plunger pump plunger compression margin. Both clearances can be measured with a soft metal plate (such as a fuse). 1. Cylinder compression margin cylinder compression margin refers to the piston compression to top dead center, the gap between the piston top and the cylinder head, such as 412 ...