Spark plug element having defined dimensional parameters for...

Details Spark plug element having defined dimensional parameters for... Spark plug element having defined dimensional parameters for...

2007-08-28

2007-08-28

Santiago, Mariceli (Department: 2879)

Electric lamp and discharge devices

Spark plugs

Shaped electrode chamber, insulator end, shell skirt, baffle...

C313S141000, C313S144000, C313S145000

Reexamination Certificate

active

10925015

ABSTRACT:
A spark plug which includes an end at its combustion chamber end, and an end at its connecting end, as well as a housing and an insulator situated in the housing. The insulator has a longitudinal bore having a longitudinal axis, a center electrode situated in the longitudinal bore of the insulator, a first ground electrode which extends into the region of the longitudinal axis of the insulator, and a second ground electrode which is situated at a distance from the longitudinal axis of the insulator laterally next to the center electrode. The insulator has a front section, facing the first ground electrode, which has an end face. The insulator has an outside diameter d and an inside diameter c, d−c, that is, the difference between outside diameter d and inside diameter c, in the front section of the insulator being not greater than 1.9 mm.

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patent: 2 106 893 (1972-08-01), None
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