Hall effect ignition system housing

Details Hall effect ignition system housing Hall effect ignition system housing

1978-09-14

1980-11-25

Myhre, Charles J.

Internal-combustion engines

Igniters

Sparkers

123617, 123647, F02P 306

Patent

active

042352134

ABSTRACT:
A housing contains a circuit board having a Hall effect sensor attached thereupon and a magnetic circuit positioned to provide magnetic flux through the Hall effect sensor. The magnetic flux through the Hall effect sensor is interruptable by a high permeability vane moving through an air gap in the magnetic circuit, activating the Hall effect sensor to provide timing signals for an automotive ignition distributor system. The base of the housing has locating bosses for positioning the housing on a swing arm of the ignition distributor which is pivotable about the axis of the distributor shaft. Mutually perpendicular surfaces contained within the housing provide reference locations for positioning the circuit board with respect to the housing. The housing has respective portions for containing a flux concentrator and a magnetic and pole piece assembly on opposite sides of the circuit board. Adhesive means fix the magnetic circuit elements and the circuit board in position so as to provide an air gap between the circuit board and the magnet and pole piece assembly for passage of the moving vane, which interrupts the magnetic flux passing through the air gap and through the Hall effect sensor.

REFERENCES:
patent: 3022389 (1962-02-01), Wolrab
patent: 3822686 (1974-07-01), Gallo
patent: 3875920 (1975-12-01), Williams
patent: 3923030 (1975-12-01), Luteran
patent: 3989023 (1976-11-01), Florio et al.
patent: 4008701 (1977-02-01), Webber
patent: 4011476 (1977-03-01), Beard
patent: 4037577 (1977-07-01), Gallo
patent: 4124936 (1978-11-01), Jellissen
patent: 4128091 (1978-12-01), Balan et al.
patent: 4155340 (1979-05-01), Fernquist et al.
patent: 4155341 (1979-03-01), Fernquist et al.
Popular Science Article, Jul. 1976.
Micro Switch Catalog Sheet PK87570.

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