Pumps – Plural pumps with individual or relative control – Bypass control
Patent
1990-10-24
1992-05-05
Bertsch, Richard A.
Pumps
Plural pumps with individual or relative control
Bypass control
417283, F04B 2304
Patent
active
051102692
ABSTRACT:
A fuel pumping apparatus, particularly useful for gas turbine engines, includes a dual element positive displacement fuel pump having a centrifugal type boost stage and, downstream, at least two parallel gear type elements. A controllable means for unlocking at least one of the elements includes a bypass line which provides a flow path to the inlet of the fuel pump from the pressurizing chamber of the gear elements which is used to urge end bearings of the gear elements into contact with the revolving gears thereby enabling the gears to pump fluid. Disposed in the bypass line is slide valve to open up the bypass line and unload and render the unloadable gear element inoperative. Control is provided by a Full Authority Digital Electronic Control and its associated Hydromechanical Unit which uses the fuel as a hydraulic fluid to actuate the slide valve.
REFERENCES:
patent: 2257095 (1941-09-01), Gottlieb
patent: 3930759 (1976-01-01), Drutchas
patent: 3941505 (1976-03-01), Nasvytis
patent: 4428346 (1984-01-01), Hosh
patent: 4493616 (1985-01-01), Bergin
"Aircraft Gas Turbine Engine Technology", Second Edition, Irwin E. Treager, pp. 211-266.
Bertsch Richard A.
Freay Charles
General Electric Company
Squillaro Jerome C.
LandOfFree
Gas turbine fuel pumping apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Gas turbine fuel pumping apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gas turbine fuel pumping apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1409107