Electronic fuel injection system for small gasoline engines

摘要

The electronic fuel injection system for small gasoline engines comprising a device pharmacy by an injector (9) to close or open the flow of injected fuel, and a restriction (24) inserted coaxially to the nozzle outlet and which has a hole ( 24a) to control the pressure drop for flow gasoline injection when the injector is open. A sonic nozzle (16) of one or two grooves (35, 37) is coupled axially with said restriction (24). The invention allows to significantly reduce the costs of fuel injector, the fuel pump and pressure regulator, and also has exceptional qualities antipollution.