The shaft wobbles planet plate, the rod leads pistons into cylinders, repeating the cycle of suction, compression and exhaust.
There are 5 cylinders and 7 cylinders type, with displacement at 108cc, 138cc, 129cc, 155cc.
There are models of DY5H11,DY5H14,DY7H13,DY7H15, applied to commercial vehicles, heavy duty applications, AG/Off Road applications and refrigeration trucks and etc.