Method of diagnosing a catalytic converter and arrangement there

Details Method of diagnosing a catalytic converter and arrangement there Method of diagnosing a catalytic converter and arrangement there

1999-01-19

2000-11-07

McCall, Eric S.

Measuring and testing

Simulating operating condition

Marine

G01M 1500

Patent

active

061420123

ABSTRACT:
The invention is directed to a method of diagnosing a catalytic converter mounted in the exhaust-gas system of an internal combustion engine. An exhaust-gas probe is mounted rearward of the catalytic converter and at least one misfire of a combustion of the engine is stimulated. The reaction of the exhaust-gas probe to the stimulation of the misfire is evaluated to diagnose the catalytic converter. The invention is also directed to an arrangement for diagnosing a catalytic converter.

REFERENCES:
patent: 3969932 (1976-07-01), Rieger et al.
patent: 5763771 (1998-06-01), Ott et al.
patent: 5797375 (1998-08-01), Kratt
patent: 5822710 (1998-10-01), Mezger et al.
patent: 5861553 (1999-01-01), Janetzke et al.
patent: 5862507 (1999-01-01), Wu et al.
patent: 5974790 (1999-11-01), Adamczyk et al.
patent: 5991684 (1999-11-01), Fukuchi et al.

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