Method and arrangement for determining the conversion performanc

Details Method and arrangement for determining the conversion performanc Method and arrangement for determining the conversion performanc

1992-11-30

1994-06-07

Kamen, Noah P.

Power plants

Internal combustion engine with treatment or handling of...

Methods

60277, F01N 300

Patent

active

053178688

ABSTRACT:
The invention is directed to a method and an arrangement for making an on-board diagnosis of a catalytic converter. For this purpose, the lambda value of the mixture is shifted in a targeted manner and the jump reaction of a signal of a lambda probe arranged rearward of the catalytic converter is utilized in order to detect the amount of mean-value shift for which the successively reduced oxygen-deficiency input quantities or excess input quantities in the catalytic converter drop below the oxygen-storage capability thereof.

REFERENCES:
patent: 4622809 (1986-11-01), Abthoff et al.

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