IGNITION DEVICE FOR IGNITION OF COMBUSTION CHAMBERS OF AIRCRAFT GAS TURBINE ENGINES Russian patent published in 2020 - IPC H01T13/08 H01T13/16 F02C7/266 

FIELD: engine building.

SUBSTANCE: invention relates to ignition of combustion chambers of aircraft gas turbine engines, namely to ignition devices. Disclosed is an ignition device for ignition of combustion chambers of aircraft gas turbine engines, comprising an ignition plug and a casing, enclosing the housing of the plug to form a cooling cavity, equipped with inlet and outlet holes, inlet opening in casing housing, connecting outer surface of casing with cooling cavity formed between housing of plug and inner surface of casing, is located during installation of ignition device on engine between external housing of combustion chamber and engine flame tube housing on engine compressor side, end of casing is connected to working end of ignition plug, outlet hole is made arc-like in casing end parallel to plug axis, which is located only on opposite side relative to inlet hole and covering not more than half-circle of working end of plug.

EFFECT: technical result is longer service life of device for ignition of combustion chambers of aircraft engines by preserving electric strength of ceramic insulator, which working end forms jointly with the central and lateral electrode of the plug, which is part of the combustion chamber ignition device, a spark gap.

1 cl, 1 dwg