Gas sensor control apparatus

Electrolysis: processes – compositions used therein – and methods – Electrolytic analysis or testing – For oxygen or oxygen containing compound

Reexamination Certificate

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Details

C204S406000, C204S425000, C073S023320

Reexamination Certificate

active

07955494

ABSTRACT:
The gas sensor control apparatus is for controlling a gas sensor including a sensor element having a solid electrolyte layer, and first and second electrodes located on opposite sides of the solid electrolyte layer, the first electrode serving as a gas detecting electrode, the second electrode serving as a reference electrode, the sensor element generating, as a sensor output, a current flowing between the first and second electrodes having a value depending on concentration of a specific gas component contained in a gas under measurement. The gas sensor control apparatus includes a determination function of determining whether or not it is time for the gas sensor to start operation, and a control function of forcibly supplying oxygen from a side of the second electrode to a side of the first electrode on a temporary basis when a determination result of the first function becomes affirmative.

REFERENCES:
patent: 4591421 (1986-05-01), Yamada et al.
patent: 5758310 (1998-05-01), Kato
patent: 6084418 (2000-07-01), Takami et al.
patent: 2005/0029098 (2005-02-01), Aoki et al.
patent: 05-040105 (1993-02-01), None
patent: 2002-005882 (2002-01-01), None
patent: 2005-055279 (2005-03-01), None
Japanese Office Action dated Nov. 17, 2009, issued in corresponding Japanese Application No. 2007-252622, with English translation.

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