Internal-combustion engines – High tension ignition system – Using capacitive storage and discharge for spark energy
Patent
1991-02-21
1991-12-24
Wolfe, Willis R.
Internal-combustion engines
High tension ignition system
Using capacitive storage and discharge for spark energy
123605, 123598, F02P 304, F02P 308
Patent
active
050742744
ABSTRACT:
An ignition system for internal combustion engines comprising an ignition coil (38), a power circuit (30) including a converter for converting the output of a battery (31) into a high voltage, a capacitor (37) arranged at the primary side of the ignition coil (38) and charged by the output from the power circuit (30), a discharging control thyristor (41) which conducts at a spark-timing of an internal combustion engine to discharge electric charges in the capacit of (37) into the primary winding (38a) of the ignition coil (38) and converter control means (49, 52) which makes the converter inactive earlier than the input of a trigger signal to the gate of the thyristor (41) by a first predetermined time (t.sub.1), and which makes the converter active again in a second predetermined time (t.sub.2) since the thyristor (41) has been triggered to conduct.
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Mitsubishi Denki & Kabushiki Kaisha
Wolfe Willis R.
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