| 摘要 |
PURPOSE:To accelerate atomization by forming a slow group fuel stream undersurface directed aslantly upwardly on the downstream side, onto the bottom wall surface of a main intake passage on the downstream side of a carburetor throttle valve. CONSTITUTION:A subintake passage 24 is opened on the bottom wall surface of a carburetor side intake passage 6, on the downstream side of a carburetor throttle valve 10. A slow group fuel stream undersurface 32 directed aslantly upwardly for the downstream side is formed on the bottom wall surface of the downstream side of the carburetor throttle valve 10 in a main suction passage 12. The slow group fuel on the carburetor downstream side is introduced by the slow group fuel stream undersurface 32 and flows down into the subintake passage 24, and introduced into a combustion chamber. Therefore, fuel atomization can be accelerated. |
