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Spark plug circuit
 
   
Document Number
US Patent 7588021
Issued Date
September 15, 2009
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Abstract
A spark plug circuit for, and a method of, reducing or preventing the corrosion of a spark plug electrodes in an internal combustion engine. The circuit and method provide a positive voltage across the center electrode/ground electrode gap, which repels positively charged corrosion mechanisms, such as calcium and phosphorus ions.
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Number of Claims:
17
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Published
September 15, 2009
Application Number
11/735,705
Filed
April 16, 2007
US Classification
123/606   123/169R 123/620
Int'l Classification
F02P   3/01   (20060101)  
Assistant Examiner
Parent Case
CROSS-REFERENCE TO RELATED APPLICATIONS This application claims priority to U.S. Provisional Application Ser. No. 60/792,205, filed Apr. 14, 2006 which is hereby incorporated by reference.
USPTO Field of Search
123/169R   123/169EL   123/606   123/607   123/608   123/620   313/141  
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