| 摘要 |
<p>For a rotary shaft member (8) to which multiple intake control valves (7) are attached, the interval between two specific intake control valves (7) is rotatably supported on a ball bearing (28) affixed to a bearing hole (26) within an intake manifold (1). This ball bearing (28) is covered by the end face of a journal part (22) of the intake control valve (7) inserted into the bearing hole (26), and a crank-shaped gap (29) is formed by the bearing hole (26) and the journal part (22) between the ball bearing (28) and the interior of a branch part (3). Thus, it is possible to prevent dust in the intake air flowing in the branch part (3) from intermingling with the movable portion of the ball bearing (28).</p> |
