Multi-Port Solenoid Fuel Injector Assembly

Seated between the fuel rail cups and the six lower intake manifold ports are six Bosch/Ford EV1-style electromagnetic fuel injectors. Each injector is modeled with its full internal anatomy: top micron basket filter, stainless steel body, electromagnetic solenoid coil, return spring, precision armature/pintle needle, 4-hole laser-drilled orifice director plate, pintle protection cap, and upper/lower Viton O-rings.

Millisecond Electromagnetic Metering: Normally, a calibrated coil spring plus 50 psi of fuel pressure holds the hardened pintle needle tightly against its conical seat. When the EEC-IV grounds the injector circuit for 2 to 15 milliseconds, current flows through the internal solenoid coil, creating a magnetic field that lifts the armature and pintle needle just ~0.15 mm off its seat. Pressurized fuel shoots past the seat and shears through four tiny laser-drilled holes in the bottom director disc, emerging as a fine conical mist aimed straight at the hot intake valve.