| 摘要 |
<p>PURPOSE:To shorten the route length of an intake air passage for a high speed by a method wherein the one surge tank is arranged in a position further near a central part between banks than the other, and a throttle body is disposed in a space above a bank on the outer side in a state to be connected to a surge tank. CONSTITUTION:In an engine wherein a plurality of cylinders 4 are mounted to each of banks 2 and 3 positioned facing each other to form a V-shape and long first and second surge tanks 8 and 9 extending along a direction in which the cylinder are aligned are provided above the banks 2 and 3, respectively, the first surge tank 8 is arranged further near a central part between the banks than the second surge tank 9. A throttle body 15 is arranged above the right bank 2. The first surge tank 8 is communicated to the suction ports of cylinders 4 through an intake air passage 10 for a high speed provided with an on-off valve 14. The tank 8 is communicated to the second surge tank 9 through a communicating passage 11 running across a space between the right and left banks 2 and 3. The second surge tank 9 communicated to each suction port through an intake air passage 12 for a low speed.</p> |
