1.Working Principle of a Hydraulic Pump
A hydraulic pump converts mechanical energy from a motor or engine into hydraulic energy by moving fluid.
The pump creates flow by:
Increasing volume at the inlet → fluid is drawn in
Decreasing volume at the outlet → fluid is forced out
A hydraulic pump creates flow, while system pressure is generated by resistance in the hydraulic system.
2.How to Calculate Theoretical Flow Rate
Theoretical Flow Formula: Qₜ = V × n
Where:
Qₜ = Theoretical flow rate
V = Pump displacement (cm³/rev)
n = Rotational speed (rpm)
3.Actual Flow Rate in Real Systems
Due to internal leakage, the actual flow is lower than the theoretical value.
Actual Flow Formula: Qₐ = Qₜ × ηᵥ
Where:
Qₐ = Actual flow
ηᵥ = Volumetric efficiency