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1. High-pressure pump. — 2. Pressure relief valve on high-pressure pump, 5 bars. — 3. Pressure relief valve assembled on fuel return from injectors, 1.3 to 2 bars. — 4. Rail overpressure valve. — 5. Common Rail. — 6. Pressure sensor. — 7. Injector. — 8. Return piping. — 9. Control unit heat exchanger. — 10. Mechanical priming pump. — 11. Prefilter assembled on chassis. — 12. Fuel tank. — 13. Mechanical supply pump. — 14. Fuel filter. — 15. Pressure regulator. — 16. High-pressure pump cooling piping. — 17. By-pass valve. — 18. By-pass valve. FUEL SYSTEM LAYOUT This fuel system is a Common Rail injection with CP3 high The pressure regulator, placed upstream of the high-pressure Function of the pressure relief valve (2), assembled on the The pressure relief valve (2) intervention brings about a fuel The pressure relief valve housed on the cylinder head, as- Two by-pass valves are placed in parallel with the mechanical The by-pass valve (18) allows fuel to flow from mechanical The by-pass valve (17) allows filling the supply system 108608 Figure 3 EXHAUST SUCTION SUPPLY SYSTEM FOR HIGH PRESSURE PUMP (LOW PRESSURE) HIGH PRESSURE 6 SECTION 2 - FUEL F4HE NEF ENGINES Base - February 2006 Print P2D32N00GB |