Patent ID: 7717099

Claim:
An exhaust gas recirculation device of an internal combustion engine, the exhaust gas recirculation device comprising: a turbocharger having a turbine on an exhaust passage of the internal combustion engine and a compressor on an intake passage of the internal combustion engine; a low-pressure EGR passage connecting the exhaust passage downstream of the turbine and the intake passage upstream of the compressor; an exhaust throttle valve that is provided on the exhaust passage upstream of a site of connection with the low-pressure EGR passage and that changes a channel cross-sectional area of the exhaust passage; an exhaust purification device that is provided in the exhaust passage between downstream of the turbine and upstream of the exhaust throttle valve; a low-pressure EGR valve that is provided on the low-pressure EGR passage and that changes the channel cross-sectional area of the low-pressure EGR passage; and an EGR control device that controls the low-pressure EGR valve so that an amount of exhaust gas that is recirculated to the intake passage via the low-pressure EGR passage reaches a non-null predetermined target amount, wherein the EGR control device controls the low-pressure EGR valve so that the amount of exhaust gas recirculated to the intake passage via the low-pressure EGR passage reaches the predetermined target amount when a degree of opening of the exhaust throttle valve is controlled in a closing direction, whereby exhaust gas is recirculated to the intake passage via the low-pressure EGR passage.