Internal-combustion engines – High tension ignition system – Using capacitive storage and discharge for spark energy
Patent
1997-06-27
1998-11-03
Nelli, Raymond A.
Internal-combustion engines
High tension ignition system
Using capacitive storage and discharge for spark energy
F02F 100
Patent
active
058294210
ABSTRACT:
An improved capacitive discharge ignition apparatus includes disable circuitry for permitting shut-off of the engine. The disable circuitry is operative to gate the discharge SCR, thereby shorting current that would otherwise charge the storage capacitor. A portion of the charging current is diverted through a transistor to the SCR gate. The transistor is rendered conductive for a predetermined time by a RC circuit connected to its base. The RC circuit is charged by momentary contact of a user-actuated switch. The time constant of the RC circuit is preferably selected to achieve engine stoppage under any anticipated operating conditions.
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Nelli Raymond A.
R. E. Phelon Co., Inc.
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