Spark plug for internal combustion engines

Details Spark plug for internal combustion engines Spark plug for internal combustion engines

1988-07-20

1990-04-10

Wieder, Kenneth

Electric lamp and discharge devices

Spark plugs

Particular electrode structure or spacing

313140, H01T 1332

Patent

active

049163540

ABSTRACT:
A spark plug configuration having improved operational characteristics to achieve a greater efficiency in internal combustion engines. The ground electrode of the spark plug is configured to have two equal width prongs that diverge from each other in a uniform manner from a point that is substantially on the projection of the periphery of the center electrode. At least one of those prongs is redirected in its outer portion so as to be directed toward the other prong. This redirected portion begins substantially along a projection of the periphery of the center electrode such that the terminal or free end of the prong extends beyond the extension of this periphery. In a second embodiment, the second prong is also redirected at an outer portion toward the first prong such that a completely symmetrical mirror-image prong is formed about a plane passing through the axis of the center electrode and the vertex. This configuration causes a uniform distribution of the spark in the spark gap and thereby increases the efficiency of the ignition of a fuel mixture in an internal combustion engine. A substantially cylindrical surface at the vertex more uniformly directs current of the spark in both prongs.

REFERENCES:
patent: 2487535 (1949-11-01), Fernandez
patent: 2894162 (1959-07-01), Ignatjev
patent: 4268774 (1981-05-01), Forkum, Jr.

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