Contact-breaking ignition plug and method of generating a spark

Details Contact-breaking ignition plug and method of generating a spark Contact-breaking ignition plug and method of generating a spark

1987-02-11

1989-07-25

DeMeo, Palmer C.

Internal-combustion engines

Igniters

Sparkers

123153, 313125, 315 57, F02P 1500

Patent

active

048503169

ABSTRACT:
A contact-breaking ignition plug comprises a magnet coil arranged in a housing and surrounding a magnet core. The magnet core comprises an enlarged end portion with lateral surfaces extending conically in relation thereto and also comprises a cavity in which an armature is movably arranged. The armature is mounted on a rod in asymmetrical relation to a longitudinal center plane of the cavity and in transverse relation to the direction of compression pressure propagation. These features induce a concentration of the magnetic effect in the armature region and cause the contact-breaking motion to be augmented by the compression pressure. Respective contact electrodes are exchangeably mounted at each of the free end of the armature and a nose of the housing. The contact electrodes are mounted such that an electrical ignition pulse traversing a short-circuit path extending from the magnet coil of the electromagnet through the contact electrodes induces a magnetic field in the electromagnet, leading to interruption of the short-circuit path and the formation of a spark. The interruption sequence can be accelerated by means of this contact-breaking ignition plug and can be more precisely controlled and material deformations no longer arise during the contact-breaking motions.

REFERENCES:
patent: 1038701 (1912-09-01), Witter
patent: 3693607 (1972-09-01), Pasbrig
patent: 3908146 (1975-09-01), Pasbrig
patent: 4172439 (1979-10-01), Pasbrig
patent: 4509469 (1985-04-01), Pasbrig

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