| 摘要 |
A spark plug for an internal combustion engine which utilizes an annular round ring surrounding the center electrode. The ring is either completely rounded or divided in two ring halves separated by a specific distance. In another embodiment the ring is divided into three equal parts including three equal voids. The rings are welded to the threated body of the plug via at least one rod. Preferably the center electrode is terminated by a metallic small ball of nickel alloys.
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