| 摘要 |
<p>A fuel supply system for injection carburetors includes an orifice (26), a constant flow rate control device (3), alnd a fuel supply source (4) and is provided with a first fuel channel circulating fuel of a predetermined flow rate, a second fuel channel branching off from the first fuel channel between the orifice and the constant flow rate control device for injecting the fuel into a suction tube (2) of the carburetor, an air flow rate detecting device (1) capable of detecting a flow rate of air flowing through the suction tube, and a fuel ejection control device (6) capable of metering the flow rate of fuel to be ejected so that a pressure difference with atmospheric pressure which is detected by the air flow rate detecting device (1) is balanced with a fuel pressure difference between the upstream side (23) and the downstream side (24) of the orifice. The fuel supply system is simple in structure and can hold an air-fuel ratio of a gas mixture with a high degree of accuracy to a desired constant value, over the entire operation region, through a single fuel control unit.</p> |
