Position sensor for a fuel injection element in an internal comb

Details Position sensor for a fuel injection element in an internal comb Position sensor for a fuel injection element in an internal comb

1984-07-23

1987-08-18

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Magnetic

Magnetometers

324208, 73119A, 307309, G01R 3306

Patent

active

046879943

ABSTRACT:
A system is provided for dynamically detecting and providing an electronic output representative of changes in the position of a fuel injection element in an internal combustion engine. The system includes an electronic circuit having a sensor for sensing a change in a magnetic field external to the circuit, and providing an output representative of the change. Circuit elements are electronically coupled with the output of the sensor for providing an output indicating the presence of the magnetic field change. A nulling circuit is provided for nulling the electronic circuit responsive to the sensor output, to thereby compensate for ambient magnetic fields, temperature and process variations. Exceptionally low current circuit characteristics are achieved in an integrated circuit configuration and geometry having very low junction leakage characteristics.

REFERENCES:
patent: 3219909 (1965-11-01), Foster
patent: 3697870 (1972-10-01), Brenner
patent: 3991361 (1976-11-01), Mattern et al.
patent: 4163160 (1979-07-01), Frazee
patent: 4163947 (1979-08-01), Weedon
patent: 4371837 (1983-02-01), Sieverin
patent: 4531491 (1985-07-01), Iiyama et al.
patent: 4541271 (1985-09-01), Flaig et al.
IBM Technical Disclosure Bulletin, vol. 21, No. 7, 12-78, Bolash et al, pp. 2717-2718.

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