Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Reinhard Artmann0
Michael Hallmannsegger0
Date of Patent
January 13, 2009
0Patent Application Number
113280710
Date Filed
January 10, 2006
0Patent Primary Examiner
Patent abstract
A plasma jet spark plug for internal combustion engines includes a center 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 center electrode as the plasma moves toward the ground electrode.
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