sensor drift

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United States of America Patent

PATENT NO 12091999
APP PUB NO 20230112942A1
SERIAL NO

17450247

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Abstract

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Methods and systems are provided for adjusting an ammonia (NH3) sensor output using readings of a nitrogen oxide (NOx) sensor, the NOx sensor having a sensitivity factor to NH3. In one example, a method may include determining and updating a gain value of the NH3 sensor during zero NOx conditions to be used to calculate a corrected NH3 sensor output value, and determining and updating an offset value of the NH3 sensor during zero NH3 conditions to be used to zero the NH3 sensor during zero NOx conditions.

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Patent Owner(s)

Patent OwnerAddress
FORD GLOBAL TECHNOLOGIES LLCFAIRLANE PLAZA SOUTH SUITE 800 330 TOWN CENTER DRIVE DEARBORN MI 48126

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kubinski, David Canton, US 6 74
Van, Nieuwstadt Michiel J Ann Arbor, US 173 2550
Yoo, In Kwang Ann Arbor, US 20 232

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