BPA112DTP1K9R-YT3K-V hydraulic piston pump for Kobelco SK200-8 Excavator

 

[answer] plunger pump plunger reciprocating movement of the total travel L is constant, by the CAM lift. The amount of oil supplied per cycle of the plunger depends on the oil supply stroke, which is variable without camshaft control. The starting time of oil supply does not change with the change of oil supply stroke. Rotating plunger can change the oil supply terminal time, thus changing the oil supply. When the plunger pump works, under the action of the CAM on the camshaft of the injection pump and the plunger spring, the plunger is forced to make up and down reciprocating movement, so as to complete the oil pumping task. The oil pumping process can be divided into the following three stages.