Fluid handling – Self-proportioning or correlating systems – Self-controlled branched flow systems
Patent
1997-12-12
2000-10-24
Hepperle, Stephen M.
Fluid handling
Self-proportioning or correlating systems
Self-controlled branched flow systems
13711507, 137312, F02C 926
Patent
active
061351350
ABSTRACT:
An unbalance compensated bypass valve (23) for a gas turbine engine fuel supply system is responsive to the fuel pressure differential across a fuel metering valve (15) to open and close a bypass orifice (37, 39, 41). The bypass valve (23) selectively supplies high fuel pressure to providing a counterbalancing force against an annular area (47) of the bypass valve piston 34 to compensate for increased restorative forces of a helical reference spring (57) as that spring is compressed as well as to compensate for other unbalance conditions within the valve (23). The piston (34) includes additional sidewall openings (69, 70, 71) which function during a "shut-off" condition to divert all fuel flow from an inlet of the metering valve (15) back to a fuel pump (13) inlet. The piston (34) also includes further sidewall openings (73, 75) which provide a controlled fuel leakage from a bypass valve inlet line (25) to the bypass valve pressure sensing inlet (29).
REFERENCES:
patent: 2977971 (1961-04-01), Ruhl
patent: 2989975 (1961-06-01), Gartner
patent: 3106934 (1963-10-01), Rogers
patent: 3282323 (1966-11-01), Katz et al.
patent: 4339917 (1982-07-01), Lagrone
patent: 4346727 (1982-08-01), Stumpp et al.
patent: 4422470 (1983-12-01), Jackson et al.
patent: 4574939 (1986-03-01), Dubuit
patent: 4738597 (1988-04-01), d'Agostino et al.
patent: 4817375 (1989-04-01), Brocard et al.
patent: 5020315 (1991-06-01), Leachman, Jr. et al.
patent: 5133181 (1992-07-01), Moore, Jr.
patent: 5215114 (1993-06-01), Breyer
patent: 5235806 (1993-08-01), Pickard
patent: 5513493 (1996-05-01), Severn et al.
patent: 5632299 (1997-05-01), Weinhold
International Search Report PCT/US98/26564.
Futa, Jr. Paul W.
Perkey Russell Crews
Allied-Signal Inc.
Hepperle Stephen M.
Palguta Larry J.
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