Electricity: electrical systems and devices – Igniting systems – For electric spark ignition
Patent
1979-04-09
1981-09-08
Shaw, C. C.
Electricity: electrical systems and devices
Igniting systems
For electric spark ignition
123601, 315209SC, F02P 306
Patent
active
042888344
ABSTRACT:
A breakerless magneto ignition system having a stator assembly including an ignition coil and core. A solid state gate turn-off switch (GTO) is connected by its anode-cathode electrodes in circuit with the primary winding of the ignition coil for conducting primary current. A solid state switching component is connected in circuit with the control electrode or gate of the GTO and with a capacitor which is charged by current generated in the primary winding in one direction as a result of magneto rotation. The stator assembly includes a trigger coil circumferentially spaced from a leg of the core of the ignition coil a distance approximately equal to the edge distance of the magneto to provide a trigger pulse. The trigger pulse is applied to a control electrode of the solid state switching device for switching the device to its conductive state whereby the charge on said capacitor provides a voltage polarity which causes the main current flow in the GTO to be shunted by its gate electrode from its anode-cathode path, thereby opening the primary circuit to cause an ignition pulse to be induced in the secondary winding of the ignition coil.
REFERENCES:
patent: 3280810 (1966-10-01), Worrell et al.
patent: 3297911 (1967-01-01), Quinn
patent: 3308800 (1967-03-01), Motto, Jr. et al.
patent: 3405347 (1968-10-01), Swift et al.
patent: 4016433 (1977-04-01), Brooks
patent: 4109632 (1978-08-01), Brooks
R. E. Phelon Company, Inc.
Shaw C. C.
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