| 摘要 |
An intake device of a multicylinder engine includes an intake manifold having a collector portion extending in a front-rear direction, an intake air introducing portion disposed at a center in the front-rear direction of the collector portion, and branch portions led out from front and rear end portions and of the collector portion. The branch portions are connected to an intake port of a cylinder head. A throttle body is disposed at an upper portion of the intake air introducing portion, and has a butterfly-type throttle valve, a valve shaft of which is oriented in the front-rear direction. A blow-by gas inlet portion is provided to the intake air introducing portion 4 of the intake manifold, and is disposed on a side to which a lower end portion of the half-open throttle valve is directed and on a downstream side of the lower end portion. |
