| 摘要 |
PROBLEM TO BE SOLVED: To provide an exhaust gas recirculation device for an internal combustion engine capable of quickly discharging condensate formed in an intake air passage out of an intake system. SOLUTION: In the exhaust gas recirculation device 20 for the internal combustion engine 1 provided with a low pressure EGR passage 22 introducing part of exhaust gas to the intake air passage 4 from an exhaust gas passage 4 as EGR gas, the intake air passage 4 is provided with a double tube part 41 in which an outer tube 44 forming a part of the intake air passage 4 and an inner tube 45 arranged inside of the outer tube 44 with keeping a gap which is to be a cylindrical passage 46 are combined. The low pressure EGR passage 22 is connected to the double tube part 41 so as to introduce EGR gas into the cylindrical passage 46 from a tangential direction of the outer tube 44, a groove part 48 is provided at an inner surface 9d of a compressor 9c connected to a downstream side of the double tube part 41 in such a manner that an inner surface thereof continues to the outer tube 44, and the groove part 48 is connected to a tank 32 storing condensate via a condensate passage 49. COPYRIGHT: (C)2009,JPO&INPIT
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