Patent ID: 7503175

Claim:
A control system for an internal combustion engine, the system comprising: a turbocharger configured to supercharge intake air drawn into the internal combustion engine utilizing energy of exhaust gas of the internal combustion engine, the turbocharger including an electric generator configured to generate regenerative electric power utilizing energy of exhaust gas; a throttle valve configured to control a flow amount of intake air supercharged using the turbocharger; an operating condition detecting unit configured to detect an operating condition of at least one of the turbocharger and the electric generator; and a throttle opening correcting unit configured to correct an opening degree of the throttle valve on the basis of the operating condition of the at least one of the turbocharger and the electric generator in response to generating of regenerative electric power by the electrical generator; wherein the operating condition detecting unit includes an intake pressure detecting unit that is configured to detect intake pressure downstream of the turbocharger with respect to an airflow direction; wherein the throttle opening correcting unit is configured to calculate an opening degree correcting amount of the throttle valve on the basis of the intake pressure detected by the intake pressure detecting unit; and wherein the throttle opening correcting unit increases the opening degree correcting amount of the throttle valve as the intake pressure detected by the intake pressure detecting unit decreases.