Control apparatus for internal combustion engine

A control apparatus for an internal combustion engine that includes:

• a compressor arranged in an intake channel and configured to supercharge intake air;
• a throttle valve arranged in a portion of the intake channel on a downstream side of the compressor and configured to open and close the intake channel;
• an exhaust gas purification catalyst configured to purify exhaust gas that flows through an exhaust channel;
• an EGR channel that connects a portion of the exhaust channel on an upstream side of the exhaust gas purification catalyst and a portion of the intake channel on a downstream side of the throttle valve;
• and
• an EGR valve arranged in the EGR channel and configured to open and close the EGR channel,
• the control apparatus comprising:
• a blow-through air detecting section programmed to detect an occurrence of a blow-through air that flows from the intake channel to the exhaust channel via the EGR channel;
• and
• an intake air pressure limiting section programmed to limit an throttle downstream pressure that is an intake air pressure at the portion of the intake channel on the downstream side of the throttle valve to reduce overheating of the exhaust gas purification catalyst where an occurrence of the blow-through air is detected.