| 摘要 |
PROBLEM TO BE SOLVED: To provide a peripheral structure for an EGR gas outlet, having lower manufacturing cost without reducing engine output while preventing the blockage of the EGR gas outlet due to deposits. SOLUTION: The structure comprises the EGR gas outlet 22a opened to the inner wall bottom face of an intake pipe when mounted on a vehicle, for part of exhaust gas to be recirculated in the intake pipe, a first groove portion 52d formed on the inner wall bottom face of the intake pipe and extending from the upstream side of the EGR gas outlet 22a in the flowing direction of intake air sideways to the flowing direction of the intake air so as to be longer than the size of at least the EGR gas outlet 22a, and second groove portions 52e, 52f continuously provided on the downstream side of the first groove portion 52d in the flowing direction of the intake air and formed on the side of the EGR gas outlet 22a along the flowing direction of the intake air. COPYRIGHT: (C)2006,JPO&NCIPI
|
