The fuel injection equipment of the Duratec-VE engine consists of a fabricated fuel rail into which is fitted a fuel pressure regulator and six injectors.
The injectors are of the end feed type, mounted directly to the fuel rail. O-ring seals are fitted to the top and bottom of the injectors. The electronic injectors are activated sequentially by the powertrain control module (PCM) via individual electrical connectors.
The fuel pressure regulator fitted to the Duratec-VE engine is a vacuum operated, diaphram type. The fuel pressure is regulated by the vacuum generated in the engine plenum, acting on the diaphram which controls a valve that controls the fuel flow. This allows acceptable fuel pressure to be maintained over all operating demands of the engine, excess fuel being returned to the fuel tank. The regulator is fitted directly to the fuel rail, where it is sealed with O-rings on the supply side and a compression seal on the return side.
The fuel rail is mounted to the engine by four bolts. Rubber pipes supply and return fuel to and from the rail, but feature quick-release couplings to facilitate easy removal of the complete assembly.
