Fuel Charging System (03.04)
Engine (03.00)
May 2007 Workshop Manual 3-4-1
Engine (03.00)
Fuel Charging System (03.04)
Safety Precautions
Operations on fuel system result in fuel liquid and vapour
being present in the working environment. This presents a
very serious risk and the following precautions must be
strictly observed:
WAR NI NG
OPERATIONS ON REFUELLING AND THE FUEL
SYSTEM MUST ONLY BE PERFORMED BY PERSONNEL WHO HAVE COMPLETED TRAINING ON FUEL HANDLING.
WAR NI NG
SMOKING MUST NOT BE ALLOWED NEAR THE
WORKING AREA. “NO SMOKING” SIGNS MUST BE POSTED AROUND THE WORKING AREA.
WAR NI NG
ANY OPERATION WHICH COULD INVOLVE SPARKS OR NAKED LIGHTS (E.G. BATTERY TESTING,
WELDING, METAL GRINDING, ETC.) MUST NOT BE ALLOWED NEAR THE WORKING AREA.
WAR NI NG
A CO2 FIRE EXTINGUISHER MUST BE AVAILABLE CLOSE AT HAND.
WAR NI NG
DRY SAND MUST BE AVAILABLE CLOSE AT HAND TO SOAK UP ANY ACCIDENTAL FUEL SPILLAGE.
WAR NI NG
IF NECESSARY, EMPTY THE FUEL INTO AN
EXPLOSION PROOF CONTAINER USING SUITABLE
FIREPROOF FUEL HANDLING EQUIPMENT.
WAR NI NG
THE WORKING AREA MUST BE WELL VENTILATED.
WAR NI NG
DISCONNECT THE BATTERY BEFORE COMMENCING WORK ON THE FUEL SYSTEM.
WAR NI NG
DEPRESSURISE THE FUEL SYSTEM BEFORE DISCONNECTING ANY FUEL LINES.
Fuel Tank and Lines (10.01)
Fuel (10.00)
May 2007 Workshop Manual 10-1-3
Fuel Tank
The fuel tank incorporates a single filler neck and check valve, internal fuel pump, internal fuel filter, a sender unit and an
‘on board refuelling vapour recovery’ system.
Fuel Pumps
) X H O 3 X P S
The modular fuel pump is immersed in the base of the fuel
tank. The pump can deliver up to 150 litres/hour. The in-
tank fuel line connects to the external line using a quick-fit
connector in the base of the fuel tank. During normal running, pressu
rised fuel from each fuel
pump passes from the tank, through an 3 micron in-tank fuel
filter to one of the two fuel rails on the engine.
Fuel temperature is measured on the primary fuel rail. If fuel
temperature becomes excessive, the fuel pressure is
increased to prevent fuel vaporisation (boiling).
Fuel pressure is measured by sensors on each fuel rail. The
fuel pressure to each rail is regulated as required by
continuously changing the run speed of the associated fuel
pump. Maximum pressure in the system is limited to 5.3 bar
by in-tank pressure regulators.
A constant head of fuel is maintained in the fuel pump
modules to ensure that the pumps cannot run dry in a ‘low
fuel’ situation.
) X H O 3 X P S
) X H O / L P L W 9 H Q W 9 D O Y H 5 R O O 2 Y H U 9 D O Y H
+ L J K 3 U H V V X U H ) H H G I U R P 5 + 6 3 X P S ) L O O H U 1 H F N
&