| 摘要 |
An intake device for an intake manifold of a internal combustion engine includes a seat, multiple ribs extending out from the seat and adapted to connect to an inner periphery of the intake manifold. Multiple blades each are arranged between two adjacent ribs. Each blade has a first side securely connected to the adjacent rib and a second side opposite to the first side and is movable relative to the first side. When the internal combustion engine operates, suction force generated inside the intake manifold is able to draw downward the second sides of the blades such that air drawn into the intake manifold flows helically and a gap defined between the second side and the adjacent second side of the blade is adjustable.
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