Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
February 22, 2011
Patent Application Number
11725754
Date Filed
March 20, 2007
Patent Primary Examiner
Patent abstract
The invention relates to the operation of an internal combustion engine, a first model value or a second model value of the exhaust gas counter pressure is determined upstream of the exhaust gas catalytic converter of the internal combustion engine as a function of at least one operating variable of the internal combustion engine, which is representative of the exhaust gas counter pressure in a current operating mode of the internal combustion engine, assuming a low valve lift or a high valve lift.
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