Engine speed dependent oil pump pressure regulation

Details Engine speed dependent oil pump pressure regulation Engine speed dependent oil pump pressure regulation

2011-08-30

2011-08-30

Kramer, Devon C (Department: 4135)

Pumps

Condition responsive control of drive transmission or pump...

Adjustable cam or linkage

C184S007400, C184S035000, C123S1960CP, C418S030000

Reexamination Certificate

active

08007248

ABSTRACT:
In an exemplary embodiment, the momentum of oil-containing air rotating with a crankshaft counterweight in an engine crankcase is converted to static pressure by blocking the flow and directing the resulting static pressure through an orifice to a vent chamber wherein the pressure acts against a cam ring of a variable displacement oil pump. The arrangement modifies the action of an oil pressure control by increasing the effective pump outlet pressure as a function of engine speed using relatively low cost modifications of the engine and oil pump. This pressure may also be used in various ways to modify the control functions of other devices.

REFERENCES:
patent: 4583423 (1986-04-01), Hahne
patent: 4872377 (1989-10-01), Nakamura
patent: 6763797 (2004-07-01), Staley et al.
patent: 6848528 (2005-02-01), Pichler et al.
patent: 7134418 (2006-11-01), Nagel et al.
patent: 7862306 (2011-01-01), Staley et al.
patent: 2009/0283067 (2009-11-01), Kurihara et al.

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