| 摘要 |
PURPOSE:To make the sufficient atomization of fuel achievable even in case of low fuel pressure as well as to make an optimum air-fuel ratio obtainable in accordance with a state of engine operation, by having a fuel feeder constituted of an air-fuel ratio adjusting mechanism, a control device, a throttle valve provided with a curved surface on its edge part, etc. CONSTITUTION:A solenoid valve that feeds an engine with fuel as opened by a control device is selected from any one among three solenoid valves 15-17. an air-fuel ratio adjusting control signal out of the control device is provided for the selected solenoid valve, and when the solenoid valve selected according to this control signal is set in on or off motion, the flow of fuel to be injected out of an injection nozzle connected to the selected solenoid valve is properly controlled owing to a combined action of a throttle valve 18 fitted with a thick part 19 and a Venturi tube made up at the inner wall of a suction passage. In this way, the engine is driven with a proper air-fuel ratio in accordance with a state of its operation. |
