Pumps – With condition responsive pumped fluid control – Plural separate sensing means for a single fluid controller
Patent
1981-09-16
1984-01-17
Gluck, Richard E.
Pumps
With condition responsive pumped fluid control
Plural separate sensing means for a single fluid controller
417292, 236 92C, F04B 4908, F04B 4910
Patent
active
044261969
ABSTRACT:
A pumped oil supply system, for example for lubricating an internal combustion engine incorporates a relief valve the control element of which has superimposed thereon an opening force derived from a temperature responsive element responsive to the temperature of the oil delivered by the pump part of the system. The pump part has separate first and second outlets, the second outlet communicating with the oil gallery of the engine and the first outlet communicating with the second outlet through a variable restrictor. The first outlet has a relief valve with a spring-loaded piston acted on by the delivery pressure in the first outlet, and the piston is connected to a center body constituting the adjustable member of the variable restrictor. The temperature responsive element is disposed in the second outlet and imposes a resilient force on the piston which, with increase of the oil temperature, augments the action thereon of the delivery pressure in the first outlet. Oil passing through the relief valve flows to the inlet side of the pump part.
REFERENCES:
patent: 2446730 (1948-08-01), Wemp
patent: 2747802 (1956-05-01), Kmiecik
patent: 3180266 (1965-04-01), Smith
Bristow Ian T.
Wilson Peter A. E.
Gluck Richard E.
Hobourn-Eaton Limited
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