| 摘要 |
A resin intake manifold includes a chamber section 12 having an intake air inlet pipe 11, and a plurality of outlet pipes 13 which connect cylinders 32 of an internal combustion engine to the chamber section 12. The resin intake manifold is made by coupling half-parts 21A and 21B of divided halves of the chamber section 12 and the outlet pipes 13 divided along a direction of the pipe axis. The outlet pipes 13 are connected to the chamber section 12 so that the external wall of the outlet pipes 13 on the side of an end 13b is integral with the external wall of the chamber section 12. Further, the outlet pipes 12 extend from the chamber section 12 along a direction of the pipe axis, and are curved to extend in a direction away from the chamber section 12 with a curve angle in a range of not smaller than 90° and not larger than 180°, and continuously extend away from the chamber section 12.
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