Spark plug for internal combustion engine with guide for gas mixture, has inclined holes in the earth electrode to guide mixture to the spark region

摘要

The spark plug has a two holes (6) in the earth electrode (2), facing inward toward the high tension electrode (5). The holes traverse the full thickness of the earth electrode. The holes are inclined, with their axes converging toward the high tension electrode. The holes help guide the mixture to the spark, improving combustion.