| 摘要 |
<p>PURPOSE:To provide an intake device for a multiple cylinder engine by which resonance supercharging can be carried out over a wide range of rotating speed, and also inertia supercharging can be carried out. CONSTITUTION:A collecting chamber 16a to which independent intake passages 19 to 21 of first to third cylinders are collected, and a collecting chamber 16b to which independent intake passages 22 to 24 of fourth to sixth cylinders are collected are formed by partitioning a surge tank 16 with a gate valve 41 which is opened only at the time of high rotating speed. The first collecting chamber 16a is connected to first to third upstream intake passages 9 to 11, and the second collecting chamber 16b is connected to fourth to sixth upstream intake passages 12 to 14, and then the first to sixth upstream intake passages 9 to 14 are collected by an upstream collecting part 8. In the second to fifth upstream intake passages 10 to 13, open/close valves 26, 35, 36, 27 which are opened or closed in accordance with the rotating speed of an engine are provided. The upstream intake passages 9 to 14 and independent intake passages 19 to 24 corresponding thereto are coaxially arranged in the vicinity of the surge tank 16, and also intake systems from the upstream intake passages to the independent intake passages are formed in an approximately U-shape, and the surge tank 16 is arranged in the curved part thereof.</p> |
