Methods and apparatus for measuring NOx gas concentration,...

Details Methods and apparatus for measuring NOx gas concentration,... Methods and apparatus for measuring NOx gas concentration,...

2005-08-02

2005-08-02

Olsen, Kaj K. (Department: 1753)

Electrolysis: processes, compositions used therein, and methods

Electrolytic analysis or testing

For nitrogen or nitrogen containing compound

C205S784500, C073S023310, C204S424000

Reexamination Certificate

active

06923902

ABSTRACT:
A method for detecting the concentration of a specific component in gas discharged from an internal combustion engine, which includes detecting the concentration of the specific component under certain driving conditions to determine a zero point, which indicates a zero concentration of the specific component, of the detection output; calibrating the detection output of the gas sensor based on the determined zero point; and detecting the concentration of the specific component in exhaust gas based on the calibrated detection output.

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