| 摘要 |
A suction pipe arrangement for a multicylinder internal combustion engine with two banks of cylinders in V formation has a cylindrical intake manifold chamber (2) from which first individual suction pipes (3a-3d) extend to the first bank of cylinders A and second individual suction pipes (3--3h) extend to the second bank of cylinders B. The first individual suction pipes run clockwise and the second suction pipes run anticlockwise around the intake manifold chamber and communicate with the latter via first and second orifices (8, 9; 8a, 9a) spaced apart at a given angle. These orifices are controlled by a rotary slide valve (10) arranged in the intake manifold chamber. The rotary slide valve has a control slit (16) for each orifice (8 and 9) and a common control slit (16), subdivided by a small bar (19), for the orifices (8a, 9a). In order to obtain a long swing pipe, the second orifices (9, 9a) ar e closed in the first position of the rotary slide valve. In order to obtain a short swing pipe, the rotary slide valve is rotated into its second position, in which the second orifices (9, 9a) are freed whereas the first orifices (8, 8a) remain partly open. |
