constant-displacement pump

A pump that moves a constant volume of fluid in each rotation. Some form of pressure relief valve or pressure regulator is used with a constant-displacement pump. Gear pumps, vane pumps, and gerotor pumps are some of the constant-displacement pumps. See fixed-displacement pump.

Aviation dictionary. 2014.

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  • fixed-displacement pump — One whose output volume is uniform on each repetitive cycle. Some form of pressure regulator or relief valve must be used with a fixed displacement pump when it is driven by an aircraft engine. See constant displacement pump. Fixed displacement… …   Aviation dictionary

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  • Gear pump — [ Gerotor pump] A Gear pump uses the meshing of gears to pump fluid by displacement. They are one of the most common types of pumps for hydraulic fluid power applications. Gear pumps however are also widely used in chemical installations to pump… …   Wikipedia

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