| 摘要 |
A wastegate valve is provided in a connecting passage that extends so as to bypass the exhaust turbine of a turbocharger provided in the exhaust passage of an internal combustion engine. When the degree of opening of the wastegate valve is controlled so as to be fully closed (S11: YES, and S12: YES), a determination value J is calculated (S13) on the basis of the operating state of the internal combustion engine, and the turbo rotational speed NT is detected (S14). When the turbo rotational speed NT is less than the determination value J (S15: YES), the driving force in the direction of closing the wastegate valve is increased (S16). |
