Spark plug for an internal combustion engine

Details Spark plug for an internal combustion engine Spark plug for an internal combustion engine

1997-06-06

1999-02-23

Argenbright, Tony M.

Internal-combustion engines

Igniters

Sparkers

123169MG, 313140, 313141, H01T 1320

Patent

active

058733388

ABSTRACT:
A spark plug has a cylindrical metal shell, a ground electrode and an insulator fixedly supported within the metal shell with a front end of the insulator extended beyond a front end of the metal shell. The insulator has an axial bore in which a center electrode is placed to form a spark gap with the ground electrode. The front end of the metal shell is generally flush with or somewhat recessed into an inner wall of a combustion chamber of an internal combustion engine when the spark plug is mounted on a cylinder head of the engine. The front end of the insulator extends at least 4.0 mm from the front end of the metal shell.

REFERENCES:
patent: 2899479 (1959-08-01), Atwell et al.
patent: 4540912 (1985-09-01), Matesco
patent: 4748947 (1988-06-01), LoRusso et al.
patent: 4774914 (1988-10-01), Ward
patent: 4841925 (1989-06-01), Ward
patent: 5731654 (1998-03-01), Benedikt et al.
"Patent Abstracts of Japan", vol. 009, No. 305 (E-363), abstract of JP-60-143549, Dec. 1985.

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