Gas dynamic ignitor of basic fuel mixture in flow channel

FIELD: machine building. SUBSTANCE: gas dynamic ignitor contains prechamber with output hole, accelerator with nozzle, acoustic resonator and main lines with control valves of oxidant and fuel supply to the accelerator. The accelerator with nozzle and acoustic resonator are coaxially installed in the prechamber and against each other with transverse clearance. The ignitor also contains afterburner chamber with head at input and nozzle at output installed on same axis in series after accelerator and prechamber, and hydraulically connected with them. The prechamber output hole is made ion form of central through hole in head and is connected with through channel via the nozzle of the afterburner chamber. The head has ring header with injectors towards the chamber nozzle. The fuel main line after the control valve at input is connected with accelerator and additionally with ring header of the head via the pneumatic control valves. The prechamber cavity is connected with gas main line by the pneumatic control valve in the fuel main line to the accelerator. The through channel cavity is connected by has main .line with the pneumatic control valve in the fuel main line to the ring header of the afterburner chamber head. EFFECT: invention increases reliability of ignition of the fuel mixture, excludes possibility of the ignitor burnout due to overheating of the structure, reduces delay time of the fuel mixture ignition, extends range of ignited gaseous components, and improves reliability of the ignitor operation. 4 cl, 5 dwg