Cavity discharge igniter

Details Cavity discharge igniter Cavity discharge igniter

1988-12-02

1990-05-15

Wieder, Kenneth

Electric lamp and discharge devices

Spark plugs

Non-conducting material in or adjacent gap

313138, 313141, 123169EL, H01T 1332, H01T 1350, H01T 1354

Patent

active

049260871

ABSTRACT:
An electrical igniter has an outer metal shell within which extends a semiconductive tubular pellet that provides a cylindrical cavity which opens through an orifice formed by an inturned lip of the shell which forms a first electrode of the igniter. The diameter of the cavity and the diameter of the orifice are in the ratio of about 5 to 6. A second electrode extends axially within the shell into the rear end of the pellet with which it makes electrical contact. Discharge between the first and second electrodes causes a plasma of discharge products produced in the cavity to be ejected through the orifice.

REFERENCES:
patent: 2657248 (1953-10-01), Smits
patent: 2831993 (1958-04-01), Lentz

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