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US 10,767,523 B2Granted
Auxiliary drive system for a pump
AssigneeConcentric Birmingham Limited
InventorsPaul Shepherd, John Magee
Life of this patent
Estimating the term…
Abstract
A vehicle engine pump assembly (100, 1000, 1100) has a gerotor pump (102), a mechanical drive (106) driven by the engine and an electrical drive (104). A controller (107) selectively engages the mechanical drive to boost pumping effort when required via a clutch.
Claims20
A vehicle engine oil pump assembly comprising:
- a pump subassembly having an inlet and an outlet;
- an electrical drive arranged to selectively drive the pump subassembly;
- a mechanical drive comprising a driven member configured to receive a drive torque from the vehicle engine;
- a clutch in a load path between the driven member and the pump subassembly, the clutch being movable between a first condition in which the driven member drives the pump subassembly and a second condition in which the driven member can rotate freely relative to the pump subassembly;
- wherein a lubrication flow path is provided such that at least one of the electrical drive and mechanical drive is at least partially lubricated by fluid from the outlet in use.
2 more elements
Dependencies are inferred from the claim text.