Exhaust gas recirculation device for an internal combustion engine

2013 
According to the present invention, the condensed water generated in the upstream of the compressor can be kept temporarily reservoir by flow into groove 44. Condensed water that has flowed into the groove 44, in the groove 44 gravity downward direction (in other words, ABV38 side) to move to. When you open the ABV38, been placed on the flow of gas return is condensed water collected in the grooves 44 are blown away in the center of the inlet 46, a compressor 20 from the central portion 42b of the front end face of the impeller 42 together with the intake air flowing through the said center section It flows into. Since the central portion 42b has a lower circumferential speed than the outer peripheral portion 42a, it is possible to suppress the erosion caused by the contact of the condensed water as compared with the outer peripheral portion 42a.
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