INTERNAL COMBUSTION ENGINE AND CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

摘要

An internal combustion engine having a supercharger includes a turbine of the supercharger installed in an exhaust system, an upstream-side catalyst installed on the upstream side of the turbine, a catalyst bypass passage bypassing the upstream-side catalyst, a catalyst-bypass-passage opening/closing valve for opening and closing the catalyst bypass passage, and a first exhaust gas recirculation passage for recirculating a part of exhaust gas so that such part is recirculated from a portion between the upstream side catalyst and the turbine to an intake system. The internal combustion engine further has a second exhaust gas recirculating passage for recirculating a part of the exhaust gas so that such part is recirculated from the upstream side of the upstream side catalyst to the intake system, and also has a selector valve for selecting between the first exhaust gas recirculating passage and the second exhaust gas recirculating passage.