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D
E
4
AILY
URO
Figure 285
1. High-pressure pump - 2. High-pressure delivery pipe - 3. Electric injector return pipe - 4. Electric injectors - 5. Common rail -
6. Fuel pressure sensor - 7. Filter with water separator - 8. Fuel electric pump non-return valve - 9. Injector return line
pressure-relief valve - 10. Tank - 11. Fuel electric pump - 12. Fuel electric pump intake filter - 13. Fuel electric pump
overpressure valve - 14. Pressure-relief valve - 15. Proportional pressure-relief valve.
Relative pressures within the circuit:
a.
4.15 bar
< p < 5.35 bar
b. 3.5 bar
< p < 5.0 bar
c.
p < 0.8 bar
d. 0.3 bar
< p < 0.8 bar
Print 603.93.651
FUNCTIONAL DIAGRAM OF HYDRAULIC SYSTEM
145
F1A ENGINE
109124
Base - March 2006
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