Tanque de combustível e tubulações

Fuel Tank and Lines 310-01A-4 310-01A-4 DESCRIPTION AND OPERATION Fuel return system 1 8 7 E65893 Item Description 1 Fuel filter 2 Fuel line fuel return T-piece 3 Fuel pressure regulator 4 Fuel rail 5 Fuel return line 6 Fuel tank 7 Fuel jet pump 8 Fuel pump The fuel pressure at the fuel injectors is controlled by a fuel pressure regulator mounted in the fuel return system. Fuel is pumped from the fuel tank, to the fuel filter. From the fuel filter, fuel is delivered to the fuel rail. A T-piece is fitted into the fuel injector fuel supply line above the fuel tank. This T-piece acts as the fuel return line and has a fuel pressure regulator fitted in the circuit. By allowing excess fuel pressure to return to the fuel tank, a constant pressure can be maintained at the fuel injectors. 2 3 5 4 6 Fuel tank vent valves E129303 Unlike the fuel tank on vehicles with diesel engine, the fuel vapor is not permitted to vent to atmosphere. Instead the fuel vapor is collected in the evaporative emission canister until the correct driving conditions permit the fuel vapor to be burnt in the engine combustion chambers. This reduces the overall emissions from the vehicle. If the fuel tank becomes inverted, the fuel tank vent valves close preventing the evaporative emission canister being filled with fuel. If the fuel tank vent valves, fuel vapor lines or the evaporative emission canister become restricted,