Dual lever pressure oil supply system

Details Dual lever pressure oil supply system Dual lever pressure oil supply system

F - Mech Eng,Light,Heat,Weapons

16

N

184/38

F16N 7/38 (2006.01) F01D 25/20 (2006.01)

Patent

CA 1056315

ABSTRACT OF THE DISCLOSURE 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 converted even though the low pressure oil flow momentarily drops below a preset value.

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