INTAKE STRUCTURE

To provide an intake structure that facilitates even flowing of intake air into a plurality of cylinders.SOLUTION: An intake structure S comprises: an intake duct 1 for passing intake air toward a plurality of cylinders which are arranged side by side in a prescribed direction; a flow-in port 21 which is arranged at a position offset to one side with respect to a center between the endmost cylinder on one side and the endmost cylinder on the other side in the prescribed direction out of the plurality of cylinders, and into which intake air flowing out of the intake duct flows; and an intake manifold 2 having a plurality of flow-out ports from which intake air flows toward the plurality of cylinders. The intake duct includes: a first region 11; and a second region 12 which connects the first region and the flow-in port and includes a flow passage portion for passing intake air flow so as to proceed toward a center from one side. A wall part 3 to serve as a barrier to the intake air flowing to the intake manifold is arranged at a position on one side of a connection part in which the second region is connected to the flow-in port.SELECTED DRAWING: Figure 1 【課題】吸気構造において、吸気を複数の気筒に均等に流入させ易くする。【解決手段】吸気構造Ｓは、所定の方向において並べて配置されている複数の気筒に向けて吸気を通す吸気ダクト１と、複数の気筒のうち所定の方向における一方側の最も端部側の気筒と他方側の最も端部側の気筒との間の中心に対して一方側にオフセットした位置に設けられており、吸気ダクトから流出した吸気が流入する流入口２１、及び、吸気が複数の気筒に向かって流出する複数の流出口を有する吸気マニホールド２と、を備え、吸気ダクトは、第１領域１１と、第１領域と流入口とを接続し、吸気を一方側から中心の方へ向かうように流す流路部分を含む第２領域１２と、を有し、第２領域が流入口に接続される接続部における一方側の位置において、吸気マニホールドに流れる吸気の障壁となる壁部３が設けられている。【選択図】図１