Gm Global Technolgoy Operations, Inc.

Gunter Bolduan

Dittmar Klett

Hermann Kersting

Oswald Glaser

Jurgen Wurth

Roland Muller

A spark plug for an internal combustion engine comprising: a cylindrical metal tube; a rod-shaped central electrode within the cylindrical metal tube; a tubular insulator within which the rod-shaped central electrode is located, wherein the tubular insulator is arranged substantially centrally in and substantially coaxially with the cylindrical metal tube; and at least two ground electrodes affixed to the cylindrical metal tube, wherein the at least two ground electrodes are each bent toward the metal electrode, wherein each ground electrode together with the central electrode forms a different member of a set of spark paths comprising: (i) an air sliding spark path, (ii) and air-air sliding spark path and (iii) an air spark path.

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Langen, Germany

Gunter Bolduan