VARIABLE VENTURI TYPE FUEL INJECTION VALVE MIXER

摘要

PURPOSE:To spray fuel sufficiently by performing related control of air and fuel to be fed to an engine and enabling highly accurate and proper control of air/ fuel ratio. CONSTITUTION:Under idling or low speed running of engine, fuel is injected through a low speed electrical fuel injection valve 10 into a bypath 11. While under intermediate and high speed running, a throttle valve 2 will open to function the engine negative pressure as a force for moving a negative pressure responsive valve 3 upwardly. The optimal opening of variable Venturi section 7 can be determined by an electrical control valve 6. Then the electrical control valve 6 and electrical fuel injection valve 8 are related and controlled by means of an electrical controller 9 thus to control the air/fuel ratio highly accurately in accordance to the engine operating condition.