Motor ignition system with magnetically selectable gas discharge

Internal-combustion engines – Igniters – Incandescent

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Details

1231465A, 123148DK, 200 19R, 315209R, F02P 100

Patent

active

040194868

ABSTRACT:
A magnetic field, such as produced by a surrounding coil, lowers the breakdown voltage of a gas discharge device in series with a spark plug so that the ignition voltage will preferentially go to that spark plug rather than to others in series with gas discharge devices having no magnetic field. The switching of the field-producing coils of the gas discharge devices in accordance with the firing cycle of an engine may be produced by a transistor switching circuit excited by a simple rotary electric timing device that also times the spark pulses. A gas discharge device for this system is shown having an elongated cup-shaped anode and rodlike cathode, which can also be made to serve as the sealing tube, centered within the anode. Gas discharge devices for this system are shown in U.S. Pat. No. 3,951,144 to the same assignee.

REFERENCES:
patent: 1952121 (1934-03-01), Critchfield
patent: 2451482 (1948-10-01), Flint
patent: 3032683 (1962-05-01), Ruckelshaus
patent: 3127540 (1964-03-01), Collins
patent: 3184639 (1965-05-01), Parish
patent: 3406314 (1968-10-01), Parish
patent: 3443152 (1969-05-01), Segall et al.
patent: 3444431 (1969-05-01), Goldberg
patent: 3595212 (1971-07-01), Barnes

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