CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

This invention provides a control apparatus for an internal combustion engine that can accurately determine the existence or non-existence of an operational abnormality of a WGV in an internal combustion engine with a turbocharger that is equipped with an EGR system. The internal combustion engine includes a turbocharger 20, a WGV 32 arranged in an exhaust bypass passage 30, an EGR valve 38 arranged in an EGR passage 34, and a pressure sensor 54 that acquires an intake pipe pressure of the internal combustion engine 10. The existence or non-existence of an operational abnormality of the WGV 32 is determined based on a change in an intake pipe pressure when a valve opening request to the WGV 32 is acquired. At such time, the EGR valve 38 is controlled so as to enter a predetermined open state prior to the valve opening request to the WGV 32. Further, the existence or non-existence of an operational abnormality of the EGR valve 38 is also jointly determined based on a change in the intake pipe pressure when a valve opening request to the EGR valve 38 is acquired.