Control device for internal combustion engine

An internal combustion engine, comprising:

• an electric supercharger including an electric compressor arranged in an intake air passage;
• an EGR introduction port formed at a portion of the intake air passage located on an upstream side of the electric compressor;
• a throttle valve A arranged in a portion of the intake air passage located on an upstream side of the EGR introduction port;
• and
• a control device configured to control the electric supercharger and the throttle valve A,
• wherein a throttle valve B other than the throttle valve A is not arranged in the intake air passage, and
• wherein the control device is configured, in a non-supercharging region in which an outlet pressure of the electric compressor is lower than or equal to an atmospheric air pressure, to execute at least one of:
• a first air flow rate adjustment processing that adjusts an intake air flow rate by adjusting an opening degree of the throttle valve A while driving the electric supercharger to cause a pressure ratio of the electric compressor to approach 1;
• and
• a second air flow rate adjustment processing that adjusts the intake air flow rate by adjusting the opening degree of the throttle valve A while not energizing the electric supercharger.