Operation - Iveco VECTOR Series Technical And Repair Manual

5
VECTOR 8 ENGINES
SECTION 2 - FUEL

OPERATION

The fuel system consists of a low pressure part and a high pressure part.
The low pressure pump (LPP) (no.7) is located on the left side of the engine and it sucks the fuel from the fuel tank.
The fuel drawn in by the low pressure pump enters the pre-filter (5) where the water and the larger particles of impurities, that
may be present, are separated out.
This filter is equipped with a heater element (on certain applications) used to increase the temperature of the fuel in low
temperature conditions. There is also a mechanical pump on the pre-filter that is used to prime the circuit. On reaching the low
pressure pump, the fuel is sent for filtering to the filter or filters depending on the applications (8). The pump pressure is maintained
at 5 bar.
The high pressure system is a common rail system consisting of a high pressure pump and 8 injectors, which is electrically
controlled by an ECM.
Figure 2
103271
1. Electro—injector — 2. Common rail — 3. Pressure sensor — 4. Common rail pressure relief valve —
5. Fuel pre-filter — 6. High—pressure pump — 7. Low—pressure pump — 8. Fuel filter.
Print P2D32V001E Base - April 2006