| 摘要 |
A carburetor including a butterfly-like throttle valve on an air intake pathway and a fuel nozzle positioned in an air-fuel pathway positioned between the air intake pathway and a fuel metering chamber. A metering pin retained by an actuating member that reciprocates linearly and remains in constant contact with a cam face of a cam member located on a valve stem. Fuel supplied to the air-fuel intake pathway from a constant fuel chamber via the fuel nozzle is controlled according to the opening and closing of a throttle. The metering pin by means of a cam controls the volume of the fuel flow rate at a desired stroke set irrespective of the opening and closing movement of the throttle valve.
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