| 摘要 |
PROBLEM TO BE SOLVED: To provide an inexpensive intake manifold having good efficiency of mounting work to an internal combustion engine.SOLUTION: An intake manifold is constituted by interconnecting an upstream side unit 12 and a downstream side unit 11. The upstream side unit 12 includes: a collector part 17 to which intake air is introduced; and branch pipe parts 18 of the same number as that of cylinders of an internal combustion engine to distribute the intake air within the collector part 17 to each of the cylinders. The downstream side unit 11 includes: a flange part 13 mounted to the internal combustion engine; and cylindrical connection parts 14 of the same number as that of the cylinders, which are protruded from the flange part 13 and connected to the branch pipe parts 18 via seal members 20, respectively. The downstream side unit 11 is made of a resin material with high heat resistance, and the upstream side unit 12 is made of a resin material with lower heat resistance, compared to the downstream side unit. |
