| 摘要 |
The invention is directed to a method and an arrangement for operating an internal combustion engine assembly ( 1 ) which make possible a monitoring and, if required, correction of a quantity of an air system of the engine assembly ( 1 ). A physical quantity of the air system is computed from several input quantities with the aid of a physical model ( 5 ) of the air system of the internal combustion engine assembly ( 1 ). The at least one physical quantity is not an input quantity of the physical model ( 5 ). The at least one physical quantity, which is computed by means of the physical model ( 5 ), is compared to a measured value for the at least one physical quantity. One of the input quantities or a model internal quantity of the physical model ( 5 ) is monitored in dependence upon a deviation between the computed value and the measured value for the at least one physical quantity.
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