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Low current extended duration spark ignition system

United States Patent

6,935,323
August 30, 2005
View the Complete Patent at the US Patent & Trademark Office
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A system for firing a spark plug is disclosed. The system includes a timing controller configured to send a first timing signal and a second timing signal. The system also includes an ignition transformer having a primary winding and a secondary winding and a spark-plug that is operably associated with the secondary winding. A first switching element is disposed between the timing controller and the primary winding of the ignition transformer. The first switching element controls a supply of power to the primary winding based on the first timing signal. Also, a second switching element is disposed between the timing controller and the primary winding of the ignition transformer. The second switching element controls the supply of power to the primary winding based on the second timing signal. A method for firing a spark plug is also disclosed.
Waters; Stephen Howard (Normal, IL), Chan; Anthony Kok-Fai (Peoria, IL)
Caterpillar Inc (Peoria, IL)
10/ 609,565
20050000502
July 1, 2003
This invention was made with Government support under DOE Contract No. DE-AC36-83CH10093 awarded by the U.S. Department of Energy. Accordingly, the Government may have certain rights to this invention.