Fuel system for a gas turbine engine

Details Fuel system for a gas turbine engine Fuel system for a gas turbine engine

2006-03-07

2006-03-07

Casaregola, Louis J. (Department: 3746)

Power plants

Combustion products used as motive fluid

With safety device

C060S039281, C060S734000

Reexamination Certificate

active

07007452

ABSTRACT:
A system for automatically transferring the fuel from one or more engine fuel manifolds directly to the engine fuel tank(s) during engine shutdown using an ejector pump has been presented. A checkvalve, which may be integrated with the ejector pump, is also used. A metering valve initiates fuel flow shutoff and is used in the draining of the fuel manifolds, thereby eliminating the need for an additional solenoid dedicated mainly to the shutoff function. The shutoff and pressurizing valve provides flow division between manifolds and manifold drain for systems having multiple manifolds. The bypass valve is used to turn the motive flow and/or manifold drain functions on and off as a function of engine speed at start and shutdown.

REFERENCES:
patent: 3810714 (1974-05-01), Turner
patent: 3901025 (1975-08-01), Bryerton et al.
patent: 4066386 (1978-01-01), Johnson et al.
patent: 5896737 (1999-04-01), Dyer
patent: 6442925 (2002-09-01), Dalton et al.

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