Method for determining the oxygen storage capacity of a...

Details Method for determining the oxygen storage capacity of a... Method for determining the oxygen storage capacity of a...

2011-04-19

2011-04-19

Kirkland, III, Freddie (Department: 2855)

Measuring and testing

Internal combustion engine or related engine system or...

Exhaust system

C073S114730

Reexamination Certificate

active

07926333

ABSTRACT:
Method for determining the oxygen storage capacity of a catalytic converter for a motor vehicle using the signals of an oxygen probe upstream and an oxygen probe downstream from the catalytic converter which has the following steps of determining of a delay time which is dependent on the oxygen storage capacity between the signal of the oxygen probe upstream and the signal of the oxygen probe downstream from the catalytic converter, determining of the phase shift which is dependent on the oxygen probe dynamics between the signal of the oxygen probe upstream and the signal of the oxygen probe downstream from the catalytic converter, and correcting the determined delay time between the signal of the oxygen probe upstream and the signal of the oxygen probe downstream from the catalytic converter by a determined phase shift.

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