Oxygen sensor operability sensing arrangement

Details Oxygen sensor operability sensing arrangement Oxygen sensor operability sensing arrangement

1989-02-17

1990-05-29

Myracle, Jerry W.

Measuring and testing

Vehicle chassis

Steering

73 23, G01M 1500

Patent

active

049285181

ABSTRACT:
The output of an oxygen sensor and the engine operation are monitored and, in the event that the voltage generated by the sensor remains within a predetermined window for a predetermined time while the engine temperature is above a predetermined level and the engine is operating within a given set of conditions which define a suitable testing zone, the sensor is indicated as malfunctioning.

REFERENCES:
patent: 4402217 (1983-09-01), Higashiyama
patent: 4497057 (1985-01-01), Kato et al.
patent: 4527424 (1985-07-01), Takahashi
patent: 4780826 (1988-10-01), Nakano et al.
patent: 4794790 (1989-01-01), Metaxa et al.

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