Oil pump with integrated oil metering device

Details Oil pump with integrated oil metering device Oil pump with integrated oil metering device

1998-03-13

2000-04-25

Thorpe, Timothy S.

Pumps

Diverse pumps

Series

F04R 2312

Patent

active

06053706&

ABSTRACT:
An oil pump for use in a vehicle engine includes a rotary pump for pressurizing oil to be pumped, and a movable piston cooperating with the rotary pump to facilitate metering of oil to and from the pump. The oil metering device is incorporated directly into the pump by means of a cam-actuated piston or a spring-loaded piston which cooperates with a displacement chamber for metering oil. Alternatively, a solenoid-actuated piston may be provided for selectively blocking pressurized fluid from entering a spring-loaded diaphragm chamber. The diaphragm is stroked alternatively by a spring and by oil pressure for metering of fluid therethrough in desired increments.

REFERENCES:
patent: 3273502 (1966-09-01), Martz
patent: 4421078 (1983-12-01), Hurner
patent: 4495909 (1985-01-01), Hurner

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