Power plants – Combustion products used as motive fluid – Combined with regulation of power output feature
Patent
1980-06-16
1981-12-01
Garrett, Robert E.
Power plants
Combustion products used as motive fluid
Combined with regulation of power output feature
F02C 932
Patent
active
043029310
ABSTRACT:
A fuel control for a gas turbine engine has a fuel flow limiting valve located in series flow relationship with a main fuel metering valve, which is manually operable, to prevent engine overspeed and overtemperature conditions. A pulse-modulated solenoid valve, responsive to error signals indicative of engine overspeeds or overtemperature conditions, modulates the pressure in an actuation cylinder which positions the flow-limiting valve so that it limits flow in accordance with the magnitude of the error signals. The solenoid valve is pulsed by a redundant analog control so that, during manual operation of the main fuel metering valve, overspeed and overtemperature protection is provided to the engine. An indicator is furnished to apprise the operator of overspeed or overtemperature conditions.
REFERENCES:
patent: 3139893 (1964-07-01), Kuzmitz
patent: 3232053 (1966-02-01), Rogers et al.
patent: 3374622 (1968-03-01), Yates
patent: 3488946 (1970-01-01), Jubb et al.
patent: 3771314 (1973-11-01), Rose et al.
patent: 4077203 (1978-03-01), Burnell
White Albert H.
Zagranski Raymond D.
Cnandler Evans Inc.
Dornon Richard A.
Garrett Robert E.
Luther Radford W.
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