Fuel control system for a gas turbine engine

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

1990-12-19

1992-02-18

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

Combined with regulation of power output feature

F02C 928

Patent

active

050882783

ABSTRACT:
A gas turbine engine is supplied with fuel by way of a metering unit which includes a metering valve responsive to a servo pressure which is regulated by electrical signals from a control circuit. Failure of electrical signals to the metering unit results in the metering valve being arrested in its position at failure. A combined manually operable and shut-off valve arrangement is in series with the metering unit includes a valve which is normally biassed fully open and is operable by a manually regulated servo pressure. The manually operable arrangement also includes a device for setting the servo pressure of the valve in the metering unit to a value which maintains that metering valve fully open.

REFERENCES:
patent: 4033112 (1977-07-01), Schuster
patent: 4145876 (1979-03-01), Stearns
patent: 4344281 (1982-08-01), Schuster et al.
patent: 4760662 (1988-08-01), Dyer et al.
patent: 4793133 (1988-12-01), White et al.

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