Patent ID: 9397481
Filing Date: 2016-07-19
CPC Classification: H01T

Claim Text:
1. A spark plug for an internal combustion engine, comprising: a center electrode; and a ground electrode, wherein a spark gap is formed between the center electrode and the ground electrode for igniting a fuel mixture by an ignition spark developing between the center electrode and the ground electrode, wherein the center electrode and the ground electrode are contoured such that a ratio of a surface of the center electrode and a surface of the ground electrode available for development of the ignition spark to a wear volume when the ignition spark is generated is increased such that an enlargement of the spark gap due to wear when the ignition spark is generated is minimized, and wherein the center electrode has a plurality of segments, and the ground electrode is arranged in radial direction around each of the plurality of segments forms a respective spark gap, wherein the plurality of segments are configured as one of webs and bars that are one of rectangular and oval in cross section, and wherein each respective spark gap is one of rectangular and oval.