Oxygen concentration detection system and vehicle control...

Details Oxygen concentration detection system and vehicle control... Oxygen concentration detection system and vehicle control...

2004-03-18

2008-08-26

Olsen, Kaj K (Department: 1795)

Chemistry: electrical and wave energy

Apparatus

Electrolytic

C204S425000, C073S023320

Reexamination Certificate

active

07416649

ABSTRACT:
An oxygen concentration detection system including an oxygen sensor which outputs a plurality of types of measurement signals and anomaly detection means and modification means. The anomaly detection means detects a sensor anomaly by determining whether the respective levels of the plurality of types of measurement signals fall within predetermined ranges. When a sensor anomaly is not detected, the modification means outputs the plurality of types of measurement signals as is. When a sensor anomaly is detected, the modification means outputs at least one of the plurality of types of measurement signals at a level outside the corresponding range within which the level of the measurement signal varies in a normal state.

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European Search Report for EP 04 29 0740 dated Jul. 26, 2004.

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