CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE WITH SUPERCHARGER

摘要

An air flow amount passing through a centrifugal compressor 26a is acquired on the basis of outputs of an air flow meter 18. A surge limit compressor rotation speed is acquired on the basis of the obtained air flow amount passing through the compressor. A current compressor rotation speed (turbo rotation speed) is acquired by a turbo rotation speed sensor 30. A rotation speed of the compressor 26a is controlled on the basis of the surge limit compressor rotation speed and the current compressor rotation speed. More specifically, while being limited so as to be equal or less than the surge limit compressor rotation speed, a target compressor rotation speed is controlled so as to be a value according to the operating conditions, such as accelerator opening and engine speed, of an internal combustion engine 10. In addition, the surge of the compressor 26a is judged on the basis of the surge limit compressor rotation speed and the current compressor rotation speed.