| 摘要 |
PURPOSE:To accurately perform a fuel cut at deceleration, by interposing a solenoid valve in the half way of an air bleed passage provided in a fuel passage of a caburetor main unit and opening and closing an air introducing port of said air bleed passage responsively to a suction piston. CONSTITUTION:The captioned carburetor is operated such that a suction piston 2 moves responsively to an intake air quantity to change area of a Venturi part 4 while a needle 6 connected to said piston 2 intrudes into a fuel passage 9 to measure fuel cooperatively with a metering jet 10. Here an air bleed passage 20 is communicated to the passage 9 and a solenoid valve 21 is interposed in the way of the passage 20 while an air introducing port 22 is provided in the upstream of the valve 21. This port 22 is provided so as to be communicated to small holes 23-23'' drilled in a casing 14 engaged to a labyrinth part 19 of said piston 2. In this way, at deceleration when fuel is cut, an engine can be surely prevented from stalling. |
