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109124 Figure 329 FUNCTIONAL DIAGRAM OF HYDRAULIC SYSTEM 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 300 F1C ENGINE D AILY E URO 4 |