| 摘要 |
PROBLEM TO BE SOLVED: To freely set the number of communicating holes of a partition plate, a forming position, a shape, and the like, and improve distribution performance of exhaust gas by forming the partition plate separately from the distribution pipe, and inserting and arranging the partition plate into the distribution pipe. SOLUTION: A holding part 12a composed of a recessed groove 12 formed by protrusions 10, 11 is formed on an inner surface of an inward wall 1d and a side wall crossed with a bottom wall 1b on which recirculating ports 6 to 9 are formed. The recessed groove 12 is formed in nearly parallel with a bottom surface 1e of the bottom wall 1b. The recessed groove 12 is formed on an intermediate part between the bottom surface 1e and the ceiling surface 1g of a ceiling wall If and at a nearly center part. The partition plate 13 is formed separately from the distribution pipe 1, and a size of a surface which is set to a size slidably fitted to the recessed groove 12, is set to a depth fitted between an opening part 1a and a recessed groove 12 of the inward wall 1d, and a width fitted between recessed groove 12. A communicating hole adapted to an engine is freely formed so as to improve distribution performance of recirculating gas. |
