FUEL FEED SYSTEM OF COMBUSTION CHAMBER OF GAS-TURBINE ENGINE Russian patent published in 2013 - IPC F02C9/26 

FIELD: engines and pumps.

SUBSTANCE: fuel feed system of a combustion chamber of a gas-turbine engine includes fuel and air lines, outlet channels to manifolds I and II of the combustion chamber of injectors, a compressed air cavity, a high-pressure cavity, a shutoff valve and a locking device. The latter consists of a differential control valve for air supply, an air supply device and a shutoff-distributing valve. Inlets of valves are connected to a fuel outlet channel to manifold I. Adjustment elements of those valves are tuned so that they provide the possibility of series closing of air supply and opening of fuel feed to manifold II as to fuel pressure in manifold I after ignition of the combustion chamber.

EFFECT: invention allows improving operating reliability of the system at start-up.

4 cl, 3 dwg