Spark plug, in particular swirl chamber spark plug

A spark plug, comprising:

• a center electrode including at least one first spark surface, the center electrode extending along a longitudinal axis of the spark plug;
• and
• a ground electrode including at least one second spark surface, wherein the first spark surface is situated diametrically opposed to the second spark surface, so that an ignition spark is generated between the first spark surface and the second spark surface;
• wherein at least one of (i) the center electrode is rotatable coaxially to the longitudinal axis with respect to the ground electrode, and (ii) the ground electrode is rotatable coaxially to the longitudinal axis with respect to the center electrode;
• and
• wherein the first spark surface and the second spark surface are inclined in such a way that at least one of rotating the center electrode with respect to the ground electrode and rotating the ground electrode with respect to the center electrode sets a distance between the first spark surface and the second spark surface.

A swirl chamber spark plug for a stationary gas engine, comprising:

• a spark plug including:
• a center electrode including at least one first spark surface, the center electrode extending along a longitudinal axis of the spark plug;
• and
• a ground electrode including at least one second spark surface, wherein the first spark surface is situated diametrically opposed to the second spark surface, so that an ignition spark is generated between the first spark surface and the second spark surface;
• wherein at least one of (i) the center electrode is rotatable coaxially to the longitudinal axis with respect to the ground electrode, and (ii) the ground electrode is rotatable coaxially to the longitudinal axis with respect to the center electrode;
• and
• wherein the first spark surface and the second spark surface are inclined in such a way that at least one of rotating the center electrode with respect to the ground electrode and rotating the ground electrode with respect to the center electrode sets a distance between the first spark surface and the second spark surface;
• and
• a cap situated on the combustion chamber side of the spark plug for forming a swirl chamber.