Method for adapting an actuation distance model for an exhaust turbocharger
AssigneeSiemens Aktiengesellschaft
InventorDietmar Ellmer
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Abstract
Parameters of an actuation distance model are adapted for an exhaust turbocharger actuator. For this, in the stationary or quasi-stationary operating state of the internal combustion engine, a first actuator is activated in the exhaust tract. The parameters of the actuation distance model are adapted on the basis of a comparison of the actual and target values for a modified state variable at the turbine. The change brought about by activation of the first actuator is compensated by activation of a second actuator in the fresh air tract.
Claims14
A method for adapting an actuation distance model for an actuator for an exhaust turbocharger in an internal combustion engine, comprising:
- identifying a stationary and quasi-stationary operating state of the internal combustion engine;
- activating a first actuator for the exhaust turbocharger in an exhaust tract and a second actuator in an intake tract so that the internal combustion engine remains in an operating state;
- determining a target value for a state variable at a turbine and subsequent comparison of the target value and measured actual value of the state variable at the turbine, wherein a correction value is identified for the actuation distance model and activation of the first actuator from the difference between the actual value and target values for the state variable.
Dependencies are inferred from the claim text.