| 摘要 |
<p>PROBLEM TO BE SOLVED: To secure sufficient strength in the resin-made intake manifold of an engine. SOLUTION: In the resin-made intake manifold 1 of an engine in which a low speed branch 3 which has smaller pass cross sectional area than that of a high speed branch 2 and introduces intake air, is formed on the curved outside of the high speed branch 2, the intake manifold 1 is divided into an upper manifold formed of a synthetic resin, a side plate 30, and the like, and the divided surfaces 25, 35 mutually welded are formed to be faced on the low speed branch 3.</p> |
