Oxygen concentration detection device

Details Oxygen concentration detection device Oxygen concentration detection device

1995-10-30

1997-05-13

Dombroske, George M.

Measuring and testing

Gas analysis

Gas of combustion

731181, F02D 4114

Patent

active

056294735

ABSTRACT:
Erroneous malfunction determination of an oxygen sensor is avoided by consideration of combustible substance penetrating to an air electrode side of the oxygen sensor. The combustible substance is determined whether it has penetrated to the air electrode of the oxygen sensor. If it is determined so, then it is determined whether the oxygen deficiency has disappeared, and the sensor malfunction determination operation is disabled until the oxygen deficiency at the air electrode is eliminated. At the same time, malfunction determination is also disabled.

REFERENCES:
patent: 5325711 (1994-07-01), Hamburg et al.
patent: 5476001 (1995-12-01), Hoetzel et al.
patent: 5493896 (1996-02-01), Riegel
patent: 5513522 (1996-05-01), Seki et al.

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