Plasma jet spark plug
AssigneeBayerische Motoren Werke Aktiengesellschaft
InventorsReinhard Artmann, Michael Hallmannsegger
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Abstract
A plasma jet spark plug for internal combustion engines comprises a central electrode, a shot channel defined by insulation material, and a ground electrode concentric with the shot channel. The center electrode has a conical shape and the ground electrode defines an outlet opening of the shot channel at a distal end of the spark plug. The shot channel has a tapered shape that forms an acceleration zone for plasma that is formed near the conical tip of the central electrode as the plasma moves toward the ground electrode.
Claims10
A plasma jet spark plug for internal combustion engines having a central electrode, a shot channel formed from insulation material and a ground electrode concentric with the shot channel and forming an outlet opening, wherein the center electrode is conically shaped and the shot channel has a taper which acts as an acceleration zone for the plasma in its path toward the ground electrode.
Dependencies are inferred from the claim text.