Figure 1
HIGH—PRESSURE ELECTRONIC INJECTION FUEL SYSTEM (COMMON RAIL)
General Information
Reducing emissions and fuel consumption requires a high level of precision and high injection pressures.
The common rail syst em makes it possible to in j ect fuel at pressures of up to 1600 bar, while the i njection precision, obtained
with an electronic control module (ECM), (also called electronic control unit, ECU) optimises the operation of the engine, limiting
emissions and consumption.
Description of the system
The system is composed of the electrical sy stem and t he fuel system.
Electrical system
Thecontrolunitgovernstheengineviathesensorsontheengine.
1. Engine c oolant temperature sensor — 2. Engine oil temperature sensor — 3. Oil filter clogging sensor — 4. ADEM III engine
control module — 5. At mospheric pressure sensor — 6. Fuel t emperature sensor — 7. Electro—inject ors —
8. Engine speed/timing sensor on crankshaft — 9. Engine speed/timing sensor on camshaft — 10. Common rail fuel pressure
sensor — 11. Common rail high pressure control solenoid valve, also called pulse wide modulation (PWM) or M—Promp
valve — 12. In take air temperature sensor after intercooler — 13. Intake air pressure sensor —
14. Engine oil pressure sensor — 15. Alternator
103265
SECTION 2 - FUEL
3
VECTOR 8 ENGINES
Print P2D32V001E Base - April 2006
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