The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 01, 1981
Filed:
Jun. 16, 1980
Albert H White, Wethersfield, CT (US);
Raymond D Zagranski, Newington, CT (US);
Cnandler Evans Inc., West Hartford, CT (US);
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.