Spark plugs having a center electrode
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United States of America Patent
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Apr 2, 2019
Grant Date -
Nov 30, 2017
app pub date -
Dec 3, 2015
filing date -
Dec 16, 2014
priority date (Note) -
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Abstract
A spark plug having a housing, an insulator situated in the housing, a center electrode situated in the insulator and a ground electrode situated on the housing, the ground electrode and the center electrode being situated toward each other in such a way that the ground electrode and the center electrode form a spark gap, and the center electrode rest with a center electrode head on a seat developed on an inner side of the insulator, and the center electrode having an electrode base body and a core situated in the electrode base body, the core being made from a material that has a higher heat conductivity than the material of the electrode base body, the electrode base body having a diameter that is not greater than 1.7 mm.
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