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Fuel Injector Nozzle

The fuel injector nozzle is mounted vertically above the throttle plate and is an electro-mechanical device which meters and atomizes the fuel delivered to the engine. The injector valve body consists of a solenoid actuated ball and seat assembly. An electrical control signal from the EEC-IV processor operates the solenoid, allowing the ball to move off its seat and fuel to flow. The injector flow orifices are fixed, and the fuel supply pressure is constant. The amount of fuel flow to the engine is controlled by the amount of time the solenoid is energized.

Fig 1: CFI Fuel Injector
G54346Courtesy of FORD MOTOR CO.