Pre-chamber spark plug for a combustion chamber of an internal combustion engine, in particular of a motor vehicle, and an internal combustion engine for a motor vehicle

A pre-chamber spark plug (18) for a combustion chamber (12) of an internal combustion engine (10), comprising:

• a pre-chamber (20) which has a plurality of openings (22, 24) and which is connectable fluidically to the combustion chamber (12) via the openings (22, 24);
• and
• a first spark gap (40) and a second spark gap (42) which are disposed in the pre-chamber (20) and via which respective ignition sparks are formable;
• wherein:
• the first and second spark gaps (40, 42) are arranged asymmetrically distributed in the pre-chamber (20) such that the first spark gap (40) is arranged further outwards with respect to a middle of the pre-chamber spark plug (18) than the second spark gap (42) along a direction (44) extending perpendicularly to a longitudinal direction (36) of the pre-chamber spark plug (18), and the second spark gap (42) is arranged closer to the middle of the pre-chamber spark plug (18) than the first spark gap (40) along the direction (44) extending perpendicularly to the longitudinal direction (36) of the pre-chamber spark plug (18);
• a central electrode (30), a ground electrode (32), and a housing (26), wherein the ground electrode (32) is integrally formed with the housing (26) of the pre-chamber spark plug (18) and extends from the housing (26) as an arm (58) toward the central electrode (30) and wherein the second spark gap (42) is formed between a first electrode region (60) formed by the arm (58) and a second electrode region (62) formed by the central electrode (30);
• the first spark gap (40) is formed between third and fourth electrode regions (52, 54) and wherein the third and fourth electrode regions (52, 54) have a first distance (A1) from each other and the first and second electrode regions (60, 62) have a second distance (A2) from each other which is different from the first distance (A1);
• the first and second distances (A1, A2) differ from one another within a range of 0.05 millimeters to 0.15 millimeters inclusive;
• at least respective tips (S) of the electrode regions (52, 54, 60, 62) are formed of a precious metal;
• respective passage directions (38) of at least two of the openings (22) run at an angle to the longitudinal direction (36) of the pre-chamber spark plug (18) and to the direction (44) extending perpendicularly to the longitudinal direction (36) of the pre-chamber spark plug (18);
• one of the openings (24) is a central opening;
• and
• the at least two of the openings (22) are arranged distributed around the central opening in a circumferential direction of the pre-chamber spark plug (18).