Post catalyst oxygen sensor diagnostic

Details Post catalyst oxygen sensor diagnostic Post catalyst oxygen sensor diagnostic

2007-02-06

2008-10-28

Wolfe, Jr., Willis R (Department: 3747)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

C701S109000, C060S274000, C060S276000, C073S114730

Reexamination Certificate

active

07444235

ABSTRACT:
An engine exhaust sensor diagnostic system for an exhaust system including a catalyst and a post-catalyst oxygen sensor includes a first module that calculates a total integrated area based on a signal generated by the post-catalyst oxygen sensor. A second module compares the total integrated area to a threshold integrated area and generates a pass status signal when the total integrated area is less than the threshold integrated area.

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patent: 2005214073 (2005-08-01), None

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