METHOD FOR CONTROLLING GAS TURBINE ENGINE Russian patent published in 2021 - IPC F02C9/18 F02C9/28 

FIELD: engine building.

SUBSTANCE: invention relates to the field of engine building, in particular, to gas turbine engines. Proposed is a method for controlling a gas turbine engine (10) equipped with a compressor (14), a combustion chamber (16), a compressor turbine (18), and an exhaust pipe (30), and preferably a power turbine (19) located between the turbine (18) and the exhaust pipe (30), arranged in series in the axial flow, wherein the power turbine (9) is connected with a shaft (28) to set the load (26) in motion. The gas turbine can operate in at least the range (65R) of high output power, the range of moderately high output power (67R), the range (70R, 70R’) of moderately low output power and the range (72R) of low output power. The method comprises stages whereat, in the range (67R) of moderately high output power, gas is passed from the downstream part (36) of the compressor (14) to the upstream part (38) of the compressor (14) so that a first preset temperature (T1) is maintained in the combustion chamber, in the range (70R, 70R’) of moderately low output power, gas is passed from the downstream part (36) of the compressor (14) to the upstream part (38) of the compressor (14) and gas is passed from the downstream part (36) of the compressor (14) into the exhaust pipe (30) so that a second preset temperature (T2) is maintained in the combustion chamber.

EFFECT: invention makes it possible to maintain a constant preset temperature in the combustion chamber, reduce the emissions of the gas turbine engine, and increase efficiency thereof.

15 cl, 3 dwg