Charging Pump within a Closed Center System Schematic
Hydraulic and Pneumatic Knowledge
The illustration below shows this closed-center system with a charging pump, which pumps oil from the reservoir to the variable-displacement pump. The charging pump supplies only the makeup oil required in a system and provides some inlet pressure to make a variable displacement pump more efficient. The return oil from a system's functions is sent directly to the inlet of a variable-displacement pump.
Charging Pump within a Closed Center System Schematic
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