| 摘要 |
<p>PURPOSE:To resolve the occurrence of an offset on the flow of fuel and air, reduce the density difference of the fuel fed to cylinders, and improve the exhaust gas performance by arranging the openings of intake branch pipes communicated with the cylinders at an intake collection section circulatively in the order of intake. CONSTITUTION:The intake air is fed to cylinders 11-l through 11-4 via an intake collection section 12 arranged with a carburetor 10 on the inlet side. Openings 14-1 through 14-4 of intake branch pipes 13-1 through 13-4 communicated with the cylinders 11-1 through 11-4 at the intake collection section 12 are arranged circulatively in the order of intake (l, 3, 4, 2) clockwise or counterclockwise, for example. Air is circulatively sucked at the intake collection section 12, and the occurrence of an offset on the flow of fuel and air is resolved. The density difference of the fuel fed to the cylinders 11-1 through 11-4 is reduced, and the exhaust gas performance is improved.</p> |
