Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
April 13, 2010
Patent Application Number
11576744
Date Filed
October 5, 2005
Patent Primary Examiner
Patent abstract
A spark plug has an optical window for sensing combustion processes in an Otto engine. The optical window is located in the central electrode of the spark plug and has at least one lens exposed to the combustion chamber, as well as at least one flexible optical fiber which can conduct light through the spark plug from the lens to an analysis system.
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