Patent ID: 8607565

Claim:
An internal combustion engine with a turbocharger, comprising: a turbocharger including a turbine disposed in an exhaust passage, the turbine being operative by exhaust energy of the internal combustion engine; an exhaust gas purifying catalyst, disposed in the exhaust passage at a downstream side of the turbine, for purifying an exhaust gas; an exhaust bypass passage for bypassing the turbine; a bypass valve for opening or closing the exhaust bypass passage; a bypass valve opening control unit for performing, if a fuel cut of the internal combustion engine is to be performed, during at least part of a period of time during which the fuel cut is performed, control to open the bypass valve or to make an opening angle of the bypass valve greater than an opening angle at a start of the fuel cut; and a catalyst temperature acquiring unit that detects or estimates a temperature of the exhaust gas purifying catalyst, wherein the bypass valve opening control unit performs the control to open the bypass valve or to make the opening angle of the bypass valve greater than the opening angle at the start of the fuel cut during the performance of the fuel cut and if the temperature of the exhaust gas purifying catalyst is higher than a first predetermined value.