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Method and device for determining an oxygen storage capacity of the exhaust gas catalytic converter of an internal combustion engine and method and device for determining a dynamic time duration for exhaust gas probes of an internal combustion engine
Method and device for determining an oxygen storage capacity of the exhaust gas catalytic converter of an internal combustion engine and method and device for determining a dynamic time duration for exhaust gas probes of an internal combustion engine
An exhaust catalyst is charged with oxygen until saturated. A given first rich air/fuel ratio is set in a combustion chamber of a cylinder. A first oxygen storage capacity value is determined depending on the measured signals from first and second exhaust probes. The exhaust catalyst is charged with oxygen until saturated. A given second rich air/fuel ratio is set in the combustion chamber of the cylinder. A second oxygen storage capacity value is determined depending on the measured signal from the first and second exhaust probe. A corrected oxygen storage capacity value is determined depending on the first and second oxygen storage capacity values.
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