Internal-combustion engines – High tension ignition system – Having engine component position sensor
Patent
1978-07-17
1980-12-09
Myhre, Charles J.
Internal-combustion engines
High tension ignition system
Having engine component position sensor
123414, 123418, F02P 302, F02P 100, H01V 500, G01P 348
Patent
active
042378443
ABSTRACT:
A signal generating apparatus comprising a bistable magnetic device which alters its magnetic state when the density of magnetic flux to which it is subject passes through a predetermined value, and detecting means providing an output signal responsive to a change of magnetic state of the bistable device. A conducting means for magnetic flux subjects the bistable magnetic device to magnetic flux conducted therethrough and comprises a first portion providing a path of high permeability and a second portion providing a path of alterable permeance for varying the reluctance of the conducting means and the density of magnetic flux to which the bistable device is subject. An energizing means provides a controllable magnetic field for inducing magnetic flux in the conducting means and provides a flux density sufficient to alter the state of the bistable device with the variation of reluctance of the conducting means.
REFERENCES:
patent: 3757754 (1973-09-01), Wiegand
patent: 3837325 (1974-09-01), Minks et al.
patent: 3838298 (1974-09-01), Torres
patent: 3923030 (1975-12-01), Luteran
patent: 3991730 (1976-11-01), Crall
patent: 4001687 (1977-01-01), Sorkin et al.
patent: 4008701 (1977-02-01), Webber
patent: 4011476 (1977-03-01), Beard
patent: 4109630 (1978-08-01), Richesen, Jr. et al.
Myhre Charles J.
Nelli Raymond A.
Trachtman Jacob
TRW Inc.
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