Direct control variable displacement vane pump

Details Direct control variable displacement vane pump Direct control variable displacement vane pump

F - Mech Eng,Light,Heat,Weapons

04

C

F04C 14/22 (2006.01) F01M 1/02 (2006.01) F01M 1/16 (2006.01)

Patent

CA 2679776

A lubrication system for a power transmission device includes a variable displacement vane pump including a moveable control ring for varying the displacement of the pump. A linear actuator directly acts on the control ring for moving the control ring between maximum and minimum pump displacement positions. The linear actuator includes an electric motor for rotating a drive member. The drive member engages a driven actuator shaft to cause linear translation of the actuator shaft in response to rotation of the drive member. A control system includes a controller for signaling the actuator to extend or retract the actuator shaft to vary the pump displacement.

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