| 摘要 |
The swivel valve (19b) is so arranged at the intake channel branch point as to form when closed a guiding surface (22) which diverts the intake air with greatly reduced loss towards the open intake section (16b) and the intake sections (16a,b) where a partition (17), whose edge (18) at the branch point, borders on or abuts the closed swivel valve (19b). When the valve is open, the guiding surface (22) forms part of the intake channel wall. The valve swings in the air flow sense into the intake channel so the surface (22) now lies in the dead volume space (27). |
