Device and method for determining the state of aging of an...

Details Device and method for determining the state of aging of an... Device and method for determining the state of aging of an...

2006-04-04

2006-04-04

McCall, Eric S. (Department: 2855)

Measuring and testing

Simulating operating condition

Marine

C073S023310

Reexamination Certificate

active

07021129

ABSTRACT:
Device and method for determining the state of ageing of an exhaust-gas catalytic converter wherein an oxygen sensor having an oxygen-sensitive region and a temperature-sensitive region can be actuated in such a manner that a temperature measurement and, as an alternative, an oxygen partial pressure measurement can be carried out. There is provision for an electrical conductivity of a conductor structure of the oxygen sensor to be determined and for an exhaust-gas temperature to be determined therefrom. From the sensor measurements, the extent of exhaust gas catalytic converter ageing may be assessed.

REFERENCES:
patent: 5303580 (1994-04-01), Schneider et al.
patent: 2003/0005746 (2003-01-01), Iwazaki et al.
patent: 41 12 479 (2002-06-01), None

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