| 摘要 |
An intake air pressure P 1 and a target control value S 1 under the condition that the internal combustion engine is in a steady operating state and the condition that the turbocharger has its supercharging efficiency set to a ratio according to the engine operating state are estimated based on engine parameters, and an intake air pressure P 2 and a target control value S 2 under the condition that the internal combustion engine is in the steady operating state and the condition without supercharging by the turbocharger are estimated based on the engine parameters. A target control value S 0 associated with an actual intake air pressure P 0 under the condition that the internal combustion engine is in a transient operating state is calculated by performing interpolation on the target control values S 1 , S 2 based on a relation between the intake air pressures P 1 , P 2 and the actual intake air pressure P 0.
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