Oil pressure control system

Details Oil pressure control system Oil pressure control system

1984-05-16

1985-07-02

Vrablik, John J.

Rotary expansible chamber devices

Heat exchange or non-working fluid lubricating or sealing

With condition responsive control of non-working fluid

418 85, 418 87, 418 88, 417228, 184 64, 184 611, 184 622, F04C 2902, F04B 3902, F01M 116, F01M 500

Patent

active

045265232

ABSTRACT:
The system comprises an arrangement for supplying sealing and lubrication oil to a gas compressor in an embodiment of the invention in which the oil pump is relieved of high pressure demand during normal compressor operating. A pneumatic control valve bypasses a quantity of the pump output in order that the pump can run with less energy demand. The valve is controlled by biasing and limiting pneumatic relays, and a pressure controller which regulate the bypass of pumped oil to a reservoir. One biasing relay adds a measure of pressure to a pilot signal, addressed to the control valve, to accommodate for line losses, and another relay establishes a lower, pilot signal limit, to insure that the oil pressure will not go below the pressure of coolant in an oil cooler.

REFERENCES:
patent: 1877345 (1932-09-01), Mattmann
patent: 2796075 (1957-06-01), Focht
patent: 3441200 (1969-04-01), Huesgen
patent: 4245465 (1981-01-01), Milo
patent: 4276960 (1981-07-01), Webb et al.

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