Fuel Tank And Lines - V6 S/C 3.0L Petrol (G1950044): Overview
The fuel system provides the engine with sufficient fuel for all operating conditions. The fuel system consists of Low Pressure (LP) fuel system and High Pressure (HP) fuel system.
The fuel system uses an electronically controlled return less fuel system. This will allow the LP fuel pump in the fuel tank to deliver fuel to the HP fuel pumps, dependant on engine demand. The in-tank LP fuel pump's pressure and flow is varied by the Powertrain Control Module (PCM). The PCM varies the pressure and flow with increased system pressure up to 7.3 bar (105.9 lnf/in2 ) absolute at high temperature and matches the flow in support of engine fueling requirements.
The fuel pump operation is regulated by a Fuel Pump Driver Module (FPDM) which is controlled by the PCM. The driver module regulates the flow and pressure supplied by controlling the operation of the fuel pump using a Pulse Width Modulation (PWM) output.
NAS market vehicles are fitted with a Flex Fuel Sensor (FFS) which measures the ethanol to gasoline ratio of the fuel. Flexible fuel vehicles can be operated with a blend of ethanol and gasoline, up to 100 percent ethanol.