IGNITION PLUG Russian patent published in 2012 - IPC H01T13/54 

FIELD: engines and pumps.

SUBSTANCE: ignition plug includes two coaxial electrodes the tops of which face the engine combustion chamber. External casing-type electrode is made in the form of nozzle extension of Laval nozzle type and has an annular projection on its inner side. Central electrode in the ignition zone and at the outlet to the chamber is cone-shaped and consists of three parts connected to each other by means of thread with possibility of disassembly and relative movement relative to each other. Central electrode is provided with inner cavity; at that, in its upper part there arranged is terminal for connection to high-voltage source and attachment of additional electrode connected to casing-type electrode; in middle part there arranged is liquid inlet nozzle and non-return valve, and on inner wall of middle part there is annular projection. Lower part of central electrode is provided with holes in side walls; at that, its wall at the outlet to the chamber is provided with chamfers and forms cavitation Laval nozzle.

EFFECT: higher operating reliability and repairability of plug, improved combustion of fuel mixture in combustion chamber and higher engine efficiency.

1 dwg