Fuel Distribution All-Wheel Drive (AWD)
The fuel tank holds 70 liters. The filler pipe is routed outside the passenger and cargo compartments, and has a check valve to prevent spillage when refuelling.
The fuel tank is saddle shaped with two pontoons connected in the upper part of the fuel tank. There is separate expansion tank above the fuel tank.
The fuel pump (FP) is located at the front of the right pontoon. At the front of the left pontoon is an ejector which pumps fuel to the right pontoon, this ejector unit is driven by the return fuel.
Level indication is provided by two lever sensors connected in series and located on the pump and the ejector unit. Their output signal is the mean of the fuel levels in the two fuel tank pontoons.
The fuel filter is mounted above the rear axle on the right-hand side with the roll-over valve. There is a fuel pressure regulator downstream of the filter.
This pressure regulator is mounted behind the engine on the right-hand side above the steering gear. It maintains a pressure of 300 kPa above the pressure in the intake manifold by sending excess fuel back to the ejector unit in the fuel tank. Only one fuel line runs from this pressure regulator and pulsation damper to the non-return fuel rail.
A reference air hose runs from the pressure regulator to the intake manifold. There is also a hose to the fresh air intake which sucks moisture out of the pressure regulator.
A vent valve upstream of the filter and a suction connection on the fuel rail are provided to prevent spillage, when replacing the filter for example.
The fuel filter, pump and ejector unit are connected with quick-release connectors. To disconnect these press the lower flange into the connector while pulling the hose.