Spark plug for venting excessive pressure

Details Spark plug for venting excessive pressure Spark plug for venting excessive pressure

1997-03-03

1998-09-01

Moulis, Thomas N.

Internal-combustion engines

Igniters

Sparkers

313120, F02P 100, F02M 5700

Patent

active

057996342

ABSTRACT:
An internal combustion engine spark plug provides an overpressure release mechanism to avert engine component damage as a result of hydrostatic lock caused by liquids (typically water) entering the combustion chamber under operating conditions. This spark plug incorporates predictably and adjustably weakened structural zones such that, upon encountering overpressure situations, the central portion of the plug is ejected, generating sufficient flow area to expel gasses and liquids from the combustion chamber and venting the cylinder to the atmosphere. The invention is also useful in the detection and avoidance of damage under conditions of detonation.

REFERENCES:
patent: 2238396 (1941-04-01), Rabezzana et al.
patent: 2906908 (1959-09-01), Mallory
patent: 3079453 (1963-02-01), Clark
patent: 3449613 (1969-06-01), Testerini
patent: 4202307 (1980-05-01), Imamura
patent: 4235214 (1980-11-01), Ito
patent: 4699096 (1987-10-01), Phillips
patent: 4823746 (1989-04-01), Kaplan
patent: 5245959 (1993-09-01), Ringenbach

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