Ionic current sensing apparatus

Details Ionic current sensing apparatus Ionic current sensing apparatus

1991-11-21

1993-12-21

Wieder, Kenneth A.

Measuring and testing

Vehicle drive train

Rear end

73 35, 324460, 324393, F02D 100, F02P 900

Patent

active

052712680

ABSTRACT:
A capacitor is connected to an ignition coil for an internal combustion engine so as to be charged by ignition current generated by the ignition coil. After firing of a spark plug in a cylinder by the ignition current, the voltage across the capacitor is applied between the center electrode and the ground electrode of the spark plug to induce an ionic current between the electrodes. The resulting ionic current is measured by a current sensor connected to the capacitor.

REFERENCES:
patent: 4351310 (1982-09-01), Adler
patent: 4359893 (1982-11-01), Kizler
patent: 4491110 (1985-01-01), Bone
patent: 4515132 (1985-05-01), Anderson
patent: 4762106 (1988-08-01), Blauhut
patent: 4774925 (1988-10-01), Iwata
patent: 4915086 (1990-04-01), Ciliberto

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