Fuel Pressure Regulator: Description and Operation

FUEL PRESSURE REGULATOR ASSEMBLY




The fuel pressure regulator attaches to the fuel module assembly. The fuel pressure regulator is a diaphragm-operated relief valve. A software bias compensates the injector on-time because the fuel pressure regulator is not referenced to manifold vacuum. The injector pulse width varies with the signal from the manifold absolute pressure (MAP) sensor. The fuel pressure regulator is a serviceable part.