| 摘要 |
<p>PURPOSE:To prevent self-excited vibration of suction piston and excessive movement without using an oil damper, by forming venturi opening in the variable venturi type carburetor in a special form. CONSTITUTION:In the carburetor to change the venturi opening area so as to keep constantly the air flow velocity in the venturi formed between body wall opposed to the bottom end of the piston and the bottom end of the piston 16, which has the movable suction piston 16 opposing a spring 34 is chamber case 12 in accordance with suction air flow, forming a flat projection 36 on the bottom wall of the carburetor body 10, a pair of separating plates 38, 38 are fixed to the bottom surface of the suction piston 16. This separating plate obtains initial purpose, forming the its ens surface in arc shaped which increasing amount in the opening area of venturi increases gradually according to the distance X from the suction piston 16.</p> |
