| 摘要 |
A suction device used for an internal combustion engine includes a throttle passage, which is arranged on the upstream side, and also includes an air connector, a surge tank and suction manifolds which are arranged on the downstream side of the throttle passage. An opening section of the air connector arranged in the longitudinal direction on a side wall face of the surge tank is provided on a wall face corresponding to a position which becomes a substantial center of the suction manifold which is open to the surge tank. Due to the foregoing, intake air can be evenly distributed to the suction manifold, and lengths of the passages can be made equal to each other. Accordingly, the generation of a rumbling noise can be suppressed. Further, the suction manifold substantially encircles the outer circumferential wall faces of the surge tank and others. Therefore, it is possible to ensure a preferable passage length for obtaining the air charging efficiency corresponding to a running state of the internal combustion engine, and the engine output can be enhanced.
|
