Oxygen concentration detector

Details Oxygen concentration detector Oxygen concentration detector

G - Physics

01

N

324/25

G01N 27/406 (2006.01)

Patent

CA 1160684

Abstract of the Disclosure An oxygen concentration detector comprises an oxygen ion conductive solid electrolyte and electrodes provided thereon to form an oxygen concentration cell for detecting oxygen partial pressure in a gas such as exhaust gas from an internal combustion engine. The oxygen concentration detector according to the invention further comprises an AC power source supplying to the electrodes an AC having a frequency at which a polarization of AC component is caused mainly due to a polarization of the solid electrolyte to detect an impedance of the solid electrolyte and the electromotive force of the oxygen concentration cell.

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