Fuel flow limiting device for overspeed and overtemperature control

Patent · Tue Dec 01 04:00:00 EST 1981

OSTI ID:5532572

White, A H; Zagranski, R D

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.

• Assignee: Chandler Evans Inc
• Patent Number(s): US 4302931
• OSTI ID: 5532572
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330103* -- Internal Combustion Engines-- Turbine
CONTROL
CONTROL EQUIPMENT
CONTROL SYSTEMS
ELECTRICAL EQUIPMENT
ENGINES
EQUIPMENT
EQUIPMENT PROTECTION DEVICES
FUEL ECONOMY
FUEL SYSTEMS
GAS TURBINE ENGINES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
SPEED REGULATORS
TEMPERATURE CONTROL