| 摘要 |
A plastic intake manifold 4 for an internal combustion engine has an opening 5, for receiving an exhaust gas recirculation pipe 8, with an inner portion 5a which is wider than the rest of the opening. The wider portion 5a is formed by a groove 60 which allows the air flowing within the intake manifold to provide a cooling effect on the plastic wall. The arrangement also has a collar 50 for spacing the pipe from the wall. The collar is formed in three portions. A first portion 50a is mounted on and welded to the pipe 8a while the other portion 50b has a wider diameter than the first portion 50a of the collar 50 to provide clearances 52, 54. A mounting plate 56 holds the collar 50 in place by flange 50c. |
