| 摘要 |
PROBLEM TO BE SOLVED: To provide an intake manifold structure of an engine capable of securing rigidity of an intake manifold 20 while suppressing cost-up and increase of weight of the intake manifold 20.SOLUTION: An intake manifold 20 has a surge tank portion 22, a plurality of independent intake passage portions 24 connected to the surge tank portion 22 at one end portions, and an intake introduction passage portion 36. The plurality of independent intake passage portions 24 are disposed in a state of covering an upper side of the surge tank portion 22, and the other end portions and their vicinity portions of the plurality of independent intake passage portions 24 are integrated with each other as a fastening portion 27 extended in a cylinder row direction of the engine 10 to fasten the intake manifold 20 to a cylinder head of the engine 10. The intake manifold 20 further has first and second bridge portions (front-side and rear-side bridge portions 41, 42) for connecting the fastening portion 27 and the surge tank portion 22 at one side and the other side in the cylinder row direction.SELECTED DRAWING: Figure 3 |
