| 摘要 |
The invention relates to a spark plug (1) comprising at least one earth electrode (15) with a reduced temperature level. The spark plug (1) comprises a tubular metallic housing (5) that has, on the combustion chamber side, an outer edge (10) on which at least one earth electrode (15) is located. The cross-sectional area (20, 25, 30, 35, 40, 41, 45, 46) of the at least one earth electrode (15) increases in size up to the outer edge (10) of the housing (5).
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