Oil system for gas turbine engine

Details Oil system for gas turbine engine Oil system for gas turbine engine

1988-10-31

1990-01-09

Stout, Donald E.

Power plants

Combustion products used as motive fluid

With lubricators

184 64, 184 611, F02C 706

Patent

active

048919349

ABSTRACT:
An oil system for a gas turbine engine including a supply circuit having a main pump supplied from a reservoir tank and discharging in bearing sumps of the engine, a scavenge circuit having a plurality of scavenge pumps supplied from the sumps of the engine and discharging back to the reservoir tank, and a distributing valve in the supply and the scavenge circuits operative when main pump discharge pressure is below a threshold pressure characteristic of main pump interruption to connect the scavenge pump discharge to the supply circuit so that residence oil in the supply circuit is recirculated to maintain bearing lubrication after main pump interruption.

REFERENCES:
patent: 3779345 (1973-12-01), Barnes et al.
patent: 4002224 (1977-01-01), Easter
patent: 4153141 (1979-05-01), Methlie
patent: 4284174 (1981-08-01), Salvana et al.
patent: 4309870 (1982-01-01), Guest et al.
patent: 4373421 (1983-02-01), Camboulives et al.
patent: 4390082 (1983-06-01), Swearingen
patent: 4433539 (1984-02-01), Norris et al.
patent: 4569196 (1986-02-01), Waddington et al.
patent: 4717000 (1988-01-01), Waddington et al.
patent: 4741155 (1988-05-01), McCarty

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