Method and apparatus for identifying characteristic shift downwa

Details Method and apparatus for identifying characteristic shift downwa Method and apparatus for identifying characteristic shift downwa

1993-12-03

1995-01-10

Williams, Hezron E.

Measuring and testing

Simulating operating condition

Marine

123688, G01M 1900

Patent

active

053796357

ABSTRACT:
A system for detecting a fault in an exhaust gas oxygen (EGO) sensor includes generating a first signal with a first voltage if the EGO sensor output signal is approaching an unacceptable voltage and a second voltage if the EGO sensor output signal has an unacceptable voltage. The system further includes setting a first flag if the first signal has the first voltage and a second flag, indicating an EGO sensor fault, if the first signal has the second voltage and the first flag is set.

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