METHOD OF CONTROLLING FUEL DOSING AT IGNITION OF COMBUSTION CHAMBER OF GAS TURBINE ENGINES Russian patent published in 2024 - IPC F02C9/26 

FIELD: control or regulation of internal combustion engines.

SUBSTANCE: invention relates to automatic control of gas turbine engines (GTE) used as power units in gas and power industries. Proposed method consists in increasing supply of fuel and air compressed in compressor into combustion chamber. At transition to ignition of combustion chamber (CC), according to the "SC open" signal, the current temperature behind the turbine is memorized at start-up Ttstart and instantaneous increase in flow rate at ignition to preset value Gt start + R_Gt start, kg/h; then flow rate is increased at ignition with rate ((Gt end + R_Gt end) - (Gt start + R_Gt start))/Cit kg/h/s to preset value Gt end + R_Gt end, kg/h; wherein temperature Ttstart is controlled, at increase of Ttstart by ΔTtstarti relative to Ttstart at the moment of opening of "SC", the CC ignition sign is formed, if at the same time the current task for fuel consumption is more than the preset value Gt ig + R_Gt ig, then the task for consumption is instantly reduced to the setpoint Gt ig + R_Gt ig, kg/h; and transition to acceleration algorithm is performed, if, when forming the CC ignition feature, the current fuel consumption task is less than the predetermined value Gt ig + R_Gt ig, then the flow rate task continues to increase with a given rate to the setting Gt ig + R_Gt ig, when the setpoint is reached, a transition to the acceleration algorithm is performed, if at increase in the flow rate setting to the setpoint Gt end + R_Gt end and maintaining this flow rate for a period of time Δt_Gtend has not formed the CC ignition feature, then termination of CC non-ignition start-up is performed.

EFFECT: invention improves performance and reduces the number of non-ignition of GTE CC due to optimization of fuel consumption for ignition of combustion chamber in all operating conditions.

4 cl, 2 dwg