Internal-combustion engines – High tension ignition system – Using capacitive storage and discharge for spark energy
Reexamination Certificate
2008-01-21
2009-06-16
Cronin, Stephen K (Department: 3747)
Internal-combustion engines
High tension ignition system
Using capacitive storage and discharge for spark energy
C123S406560, C123S406580, C123S599000, C123S601000
Reexamination Certificate
active
07546836
ABSTRACT:
A capacitive discharge ignition (CDI) system that can be used with a variety of light-duty internal combustion engines, including those typically employed by lawn, garden, and other outdoor equipment. According to one embodiment, the CDI system includes an ignition module having a first switching device that shorts a charge coil during an initial portion of a charge cycle. Subsequently, the first switching device is turned ‘off’ so that a flyback charging technique charges an ignition capacitor. A second switching device is then used to discharge the ignition capacitor and initiate the combustion process.
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Andersson Martin N.
Healy Cyrus M.
Cronin Stephen K
Hamaoui David
Reising Ethington P.C.
Walbro Engine Management , L.L.C.
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