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

1982-01-25

1984-04-24

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

Combined with regulation of power output feature

F02C 928

Patent

active

044440081

ABSTRACT:
A fuel control system for a gas turbine engine comprises a main fuel controller which varies the fuel flow to the engine in accordance with the engine pressure ratio and an idling fuel control arrangement. Control of idling fuel flow on a pressure ratio basis is somewhat wasteful of fuel. Therefore in the present invention the idling fuel control arrangement is arranged to control to a constant value of engine HP rotor speed. In the embodiment a variable bleed orifice is allowed to reduce the control pressure which operates the main fuel valve.

REFERENCES:
patent: 3123128 (1964-03-01), Zeisloft
patent: 3267670 (1966-08-01), McCombs
patent: 3768249 (1973-10-01), Lewis

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