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Definition Of Displacement And Flow Rate Of Hydraulic Pumps

Displacement refers to the volume of liquid discharged (or input) obtained by the change of the geometric dimensions of the sealed cavity every revolution of the hydraulic pump. The common unit is ml / r (ml / rev). The displacement can be changed into a variable pump (or variable motor) by adjusting, and the displacement cannot be changed into a fixed displacement pump (or fixed displacement motor).

 

The actual flow refers to the flow at the outlet (or inlet) of the hydraulic pump. Due to the internal leakage of the pump, its actual flow is less than the theoretical flow. Because the motor itself also has internal leakage, in order to achieve the specified speed, in order to compensate for the leakage, the actual input flow must be greater than the theoretical flow.

 

 

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