Internal-combustion engines – High tension ignition system – Using capacitive storage and discharge for spark energy
Patent
1995-01-30
1996-05-07
Nelli, Raymond A.
Internal-combustion engines
High tension ignition system
Using capacitive storage and discharge for spark energy
123600, F02P 306
Patent
active
055136192
ABSTRACT:
An improved capacitive discharge ignition system utilizes a permanent magnet assembly revolving in synchronism with operation of an internal combustion engine to generate spark energy. The relatively high voltage necessary to initiate an ignition spark is produced by application of a capacitive discharge voltage to the primary coil of a step-up transformer. The ignition spark is initiated in timed relationship when a voltage otherwise induced on the secondary coil of the step-up transformer by revolution of the magnet assembly exceeds a characteristic spark sustaining potential. Longer spark duration at lower engine speeds is provided by configuring the discharge circuit such that no more than a negligible current flows in the charge coil during the time in which the sustaining potential is being utilized to maintain the spark. In some exemplary constructions, the discharge voltage may be triggered by a voltage divider network electrically connected across the primary coil.
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Chen Xunming
Schmidt Philip S.
Nelli Raymond A.
R. E. Phelon Company, Inc.
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