Method for monitoring the functional capability of an exhaust ga

Details Method for monitoring the functional capability of an exhaust ga Method for monitoring the functional capability of an exhaust ga

1996-09-30

1998-09-22

Williams, Hezron E.

Measuring and testing

Gas analysis

Gas of combustion

G01N 3700

Patent

active

058116613

ABSTRACT:
During lean operation of the internal combustion engine, preferably in relatively long-lasting overrunning shutoff phases, the output voltage of the sensor signal is regulated to a predetermined desired value via the heating control unit. If within the diagnosis period, fewer than a predeterminable number of monitoring results are within a tolerance range located around the desired value, then the heating circuit is classified as defective.

REFERENCES:
patent: 5090387 (1992-02-01), Mayer et al.
patent: 5454259 (1995-10-01), Ishii et al.
patent: 5462040 (1995-10-01), Krebs et al.

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