Patents Assigned to Cnandler Evans Inc.
  • Patent number: 4302931
    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.
    Type: Grant
    Filed: June 16, 1980
    Date of Patent: December 1, 1981
    Assignee: Cnandler Evans Inc.
    Inventors: Albert H. White, Raymond D. Zagranski