Dual pressure level oil supply system

Details Dual pressure level oil supply system Dual pressure level oil supply system

1976-02-25

1976-11-16

Geoghegan, Edgar W.

Power plants

Pressure fluid source and motor

60405, 60456, 60698, 60DIG3, 60DIG5, F16D 3106

Patent

active

039915646

ABSTRACT:
A hydraulic fluid supply system includes a single motor driven pump which supplies a dual pressure level output for providing both a high pressure oil output and a low pressure oil output. In combination with a turbomachine, the dual pressure level output of the oil pump obviates the requirement of pressure reducing valves in the low pressure supply lines and losses associated therewith. Moreover, since only a portion of the entire oil requirement is raised to the higher pressure level, the pump motor horsepower requirements are reduced to save energy and thereby improve overall system efficiency. A further improvement is a system of pressure differential valves whereby under certain conditions, high pressure oil flow is conserved even though the low pressure oil flow momentarily drops below a preset value.

REFERENCES:
patent: 1613753 (1927-01-01), Hodgkinson
patent: 2252456 (1941-08-01), Buehman
patent: 3034288 (1962-05-01), French

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