Method for detecting the condition of catalytic converters

Power plants – Internal combustion engine with treatment or handling of... – Methods

Patent

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Details

Other Related Categories

60276, 60277, F01N 318

Type

Patent

Status

active

Patent number

050183486

Description

ABSTRACT:
An internal combustion engine has a catalytic converter in its exhaust gas path. In the catalytic converter, two exhaust gas emission measuring probes are provided spatially separated from one another. The phase shift between the output signals of these two measuring probes is used as a measure of the aging of the catalytic converter.

REFERENCES:
patent: 4622809 (1986-11-01), Abthoff
patent: 4707984 (1987-11-01), Katsuno et al.
patent: 4707985 (1987-11-01), Nagai et al.
patent: 4720973 (1988-01-01), Katsuno
patent: 4739614 (1988-04-01), Katsuno
patent: 4761950 (1988-08-01), Nagai et al.

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