METHOD OF CONTROLLING SUPPLY OF FUEL TO GAS TURBINE ENGINE AND SYSTEM FOR ITS IMPLEMENTATION Russian patent published in 2020 - IPC F02C9/30 F02C9/26 F02C9/00 

FIELD: engine building.

SUBSTANCE: group of inventions relates to aircraft engine engineering and can be used in electronic-hydromechanical automatic control systems (ACS) by multi-mode gas turbine engines (GTE) and control of fuel supply in all operating modes of GTE. In the method of controlling supply of fuel to a gas turbine engine, comprising: measuring engine operating parameters at different operating modes, depending on the GTE preset operating mode, generating and supplying the required fuel flow to the combustion chamber and controlling the pressure behind the controlled performance pump, novel is that beforehand determined value equal to pressure drop on units in fuel path between pump and nozzles of combustion chamber, flow rate of nozzles of combustion chamber, additionally measuring fuel pressure behind the pump of controlled capacity and air pressure in the combustion chamber, and the specified pressure behind the pump of the controlled capacity is formed as the sum of the value of the air pressure signal in the combustion chamber, the value equal to the pressure drop on the units, and a signal value proportional to the square of the required fuel flow to the combustion chamber, wherein the proportionality coefficient is selected equal to the combustion chamber nozzles flow rate coefficient, and pump capacity is changed until measured pressure behind pump becomes equal to preset one. Also disclosed is a gas turbine engine fuel supply system implementing the disclosed method.

EFFECT: reduction of heating of fuel in fuel circuit and reduction of power take-off from GTE rotor by maintaining minimum required fuel pressure behind pump with controlled capacity.

2 cl, 1 dwg