DEVICE FOR FEEDING FUEL INTO MULTI-MANIFOLD COMBUSTION CHAMBER WITH PNEUMATIC SPRAYING Russian patent published in 2024 - IPC F02C7/22 F02C7/26 

FIELD: engines.

SUBSTANCE: invention relates to operation of aircraft gas turbine engines and can be used to control fuel supply to multi-manifold combustion chamber of gas turbine engine at start-up stage. Invention comprises interconnected fuel dispenser, three fuel manifolds for supplying fuel to GTE combustion chamber injectors, between each serially connected first, second and third fuel manifolds there is a connecting line with a jet installed in it, with the possibility of dosed overflow from one manifold to another in the GTE start-up modes, gas turbine engine combustion chamber contains fuel injectors with pneumatic spraying, the fuel dispenser design additionally includes at its outlet a gas turbine engine shutdown valve, shut-off valves of the second and third fuel manifolds, an electronic control unit is introduced with the possibility of measuring the high-pressure rotor speed of the gas turbine engine, the total temperature and the total air pressure at the gas turbine engine inlet, electronic control unit comprises at least three outputs, the first output of the electronic control unit is electrically connected to the shutdown valve of the gas turbine engine, the second output of the electronic control unit is electrically connected to the shutoff valve of the second fuel manifold, third output of electronic regulator is electrically connected to shutoff valve of third fuel manifold, opening of the shutdown valve and each shutoff valve in the fuel manifolds is carried out by the corresponding control action from the electronic control unit at the preset value of the GTE high-pressure rotor speed n_{HP 1MI}^SET, n_{HP 2MI}^SET, n_{HP PS 3MI}^SET, formed for each valve separately and depending on full parameters of air at the inlet of engine P^*_IN or T^*_IN.

EFFECT: invention allows providing reliable ignition of the combustion chamber of GTE at start-up and prevention of cases of overheating and/or stalling of flow in GTE at poor-quality fuel spraying at ignition of the combustion chamber with fuel injectors with pneumatic spraying.

6 cl, 1 dwg