Method for monitoring the performance of a catalytic converter u

Details Method for monitoring the performance of a catalytic converter u Method for monitoring the performance of a catalytic converter u

1997-04-21

1998-11-24

Denion, Thomas E.

Power plants

Internal combustion engine with treatment or handling of...

Methods

60276, 60277, 60285, F01N 300

Patent

active

058392742

ABSTRACT:
A method for monitoring and controlling the performance of a catalytic converter (34) includes monitoring an exhaust gas stream from an engine (16) for the presence of methane. Upon detecting methane in the exhaust gas stream an oxygen storage level of a catalyst within the catalytic converter (34) is determined. The oxygen storage level is compared with a reference standard and the air/fuel ratio of the exhaust gas stream is continuously adjusted to maintain the oxygen storage level within predetermined control limits.

REFERENCES:
patent: 5131224 (1992-07-01), Siewert et al.
patent: 5408215 (1995-04-01), Hamburg
patent: 5452576 (1995-09-01), Hamburg et al.
patent: 5524432 (1996-06-01), Hansel

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