Ignition system using a Wiegand wire

Details Ignition system using a Wiegand wire Ignition system using a Wiegand wire

1978-06-28

1980-08-19

Argenbright, Tony M.

Internal-combustion engines

High tension ignition system

315209SC, 315209T, F02P 108

Patent

active

042178746

ABSTRACT:
Changes in the magnetic field around a Wiegand wire created by a magnetic rotor coupled to a shaft of the engine induce a signal in a sensing coil. The signal is applied to an input switch which forms part of a control circuit. The output of the control circuit is connected to an interrupter switch connected in series with an ignition coil such that a spark is created at the secondary of the ignition coil when the interrupter switch opens. The control circuit maintains the interrupter switch in the nonconductive state for a predetermined percentage of the ignition cycle at low engine speeds and for a lesser percentage at high engine speeds so that enough energy can build in the ignition coil prior to the next interruption at the higher speeds.

REFERENCES:
patent: Re29862 (1978-12-01), Roozenbeek et al.
patent: 3757754 (1973-09-01), Wiegand
patent: 3885534 (1975-05-01), Webster
patent: 3937193 (1976-02-01), Kim
patent: 3952715 (1976-04-01), Van Siclen, Jr.
patent: 3991730 (1976-11-01), Crall
SAE Paper No. 780208, "The Wiegand Effect and Its Automotive Applications", by J. D. Marks and M. J. Sinko, Feb.-Mar. 1978.
"The Wiegand Effect From Echlin", by The Echlin Manufacturing Company.

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