Magnetic circuit apparatus for an electronic ignition system of

Details Magnetic circuit apparatus for an electronic ignition system of Magnetic circuit apparatus for an electronic ignition system of

1975-12-31

1977-02-22

Nilson, Robert G.

Internal-combustion engines

Igniters

Incandescent

F02P 100

Patent

active

040087018

ABSTRACT:
Magnetic circuit apparatus for use in an electronic ignition system of a combustion engine having one or more spark ignition devices comprises a magnetically permeable frame on which is supported a field magnet and a Hall Effect pulse generator in spaced apart relation such that the field magnet and frame provide a magnetic flux path to which the pulse generator periodically is exposed to produce successive pulses in timed relation to the speed of operation of the engine. A bias magnet confronts the pulse generator at that side of the latter which is opposite to the field magnet and has a polarity opposite that of the field magnet. The flux density of the bias magnet is substantially less than that of the field magnet.

REFERENCES:
patent: 3822686 (1974-07-01), Gallo
patent: 3875920 (1975-04-01), Williams

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