GAS TURBINE ENGINE FUEL FEED AND ADJUSTMENT TWO-CHANNEL SYSTEM Russian patent published in 2008 - IPC F02C9/26 

FIELD: engines and pumps, heating.

SUBSTANCE: gas turbine engine fuel feed and adjustment system is intended for automatic control over the gas turbine engines. The proposed system incorporates a pump, a fuel metering device with a differential valve, main and standby control channels with a selector switch. The main control channel electrohydraulic transducer controls the fuel flow rate in static and dynamic conditions in response to the engine control unit instructions. The standby control channel incorporates an operating condition selector, an air- and liquid-operated transducer, an intra-throttling chamber and a control slide valve. It also comprises a valve limiting the intra-throttling chamber minimum pressure communicating, via the operating condition selector, with the aforesaid air- and liquid-operated transducer. With the standby control channel operating, the fuel flow rate depends upon the operating condition selector state and an amount of control air fed to the said air- and liquid-operated transducer. The minimum pressure limiting valve, communicating with the air- and liquid-operated transducer, limits the fuel amount fed into the engine.

EFFECT: higher reliability and efficiency.

1 dwg