Fuel Injector

The fuel injector is an electric solenoid powered by the power module but is controlled by the logic module. The logic module determines when and how long the power module should operate the injector. When an electric current is supplied to the injector, the armature and pintle move a short distance against a spring, opening a small orifice. Fuel is supplied to the inlet of the injector by the fuel pump, then passes through the injector, around the pintle and out the orifice. Since the fuel is under high pressure a fine spray is developed in the shape of a hollow cone. The injector, through this spraying action, atomizes the fuel and distributes it into the air entering the combustion chamber.