Fuel Injector: Description and Operation

GF07.03-P-6010AMG Component Description For Fuel Injection Valves







The fuel injection valves are plugged into the inlet ducts on the variable intake manifold and are fixed in place using the fuel distribution rail.







Function
If solenoid winding (13) is energized, the nozzle needle (11) is raised by the solenoid armature (12) about 0.1 mm against the force of the coil spring (7).

The fuel escapes through an outlet hole (10) and is sprayed onto the intake valves in a finely atomized spray.

Each of the fuel injection values are directly actuated by correspondingly long mass impulses from the motor electronics control unit (N3/10). The fuel injection valves are actuated by the ME control unit sequentially which means that every injection valve allocates an exactly calculated fuel quantity to its assigned cylinder.

The voltage supply to the fuel injection valves is from "terminal 87 M1e"via the ME control unit.

In the case of recognition of combustion misfires actuation is interrupted by the corresponding fuel injection valve.