Solid state ignition system

Details Solid state ignition system Solid state ignition system

1977-03-28

1979-05-22

Pendegrass, Verlin R.

Internal-combustion engines

Igniters

Incandescent

123148E, F02P 306

Patent

active

041553403

ABSTRACT:
A device for creating a sparking voltage across the electrodes of a spark plug of an internal combustion engine comprising a rotatable member carrying a permanent magnet having an outwardly extending flux field movable in an annular path, a transformer having a first winding for creating a current change of a spark creating level and a second winding connected across the electrodes, a Hall Effect switch activated by a D.C. biasing voltage and having an output energized when the switch is exposed to a flux field, switching means for rapidly changing current flow in the first winding only when the switching means is actuated, means for actuating the switching means when the output of the Hall Effect switch is energized, and means for mounting the Hall Effect switch at a selected location where the switch is exposed to an actuating flux from the rotating permanent magnets when the rotating member is at a selected angular position. In accordance with another feature, the D.C. biasing voltage is varied directly with the speed of the rotating member to provide a spark advance-retard feature, especially useful in an energy discharge ignition system.

REFERENCES:
patent: 2924633 (1960-02-01), Sichling et al.
patent: 3373729 (1968-03-01), Lemen
patent: 3405347 (1968-10-01), Swift et al.
patent: 3667441 (1972-06-01), Cavil
patent: 3923030 (1975-12-01), Luteran

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