Hydraulic Cast Iron PVQ Series Variable Piston Pumps

- the total stroke l of plunger reciprocating motion is unchanged, which is determined by the lift of the cam.
- the amount of oil supplied to the plunger in each cycle depends on the oil supply stroke, which is variable without the control of camshaft.
- the starting time of oil supply does not change due to the change of oil supply journey.
-rotating the plunger can change the end time of oil supply, thereby changing the amount of oil supply.

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