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Figure 284 FUEL RECIRCULATION AND SUPPLY SYSTEM DIAGRAM 1. CP1 H high-pressure pump - 2. Pressure regulator - 3. Heated fuel filter with water separator - 4. Fuel delivery pipe to the filter - 5. Fuel return pipe to the tank - 6. Low-pressure pipe assembly - 7. High-pressure delivery pipe to the hydraulic accumulator - 8. Pressure sensor - 9. Hydraulic accumulator - 10. Return pipe from the electric injectors to the low-pressure pipe assembly - 11. High-pressure pipe between the hydraulic accumulator and the electric injectors - 12. Electric injectors. high pressure In this injection system, the pressure regulator, located pump correctly supplies the hydraulic accumulator. This solution, pressurizing solely the necessary fuel, improves The high-pressure pump continually keeps the fuel at the At the electro-injector inlet, there is therefore always fuel at When the solenoid valve of an electro-injector is energized by The hydraulic system is made out of a low-pressure fuel The high-pressure circuit is composed of the following pipes: - ;pipe connecting the high-pressure pump outlet to the - hydraulic accumulator (rail); - pipes feeding the electric injectors from the hydraulic The low-pressure circuit is composed of the following pipes: - fuel intake pipe from the tank to the filter; - pipe assembly made up of the following: - feed pipe from the fuel filter to the high-pressure pump; - fuel return pipe from the high-pressure pump to the tank; - fuel exhaust pipe from the injectors to the fuel return pipe to the tank. According to the high performance of this hydraulic system, - avoid connecting high-pressure pipe fittings with - avoid disconnecting the high-pressure pipes with the The integrity of the low-pressure circuit is also essential for the OPERATION The pipes connected to the fuel filter support to the pipe assembly are of the quick-connect type. NOTE 108338 F1A ENGINE 143 D AILY E URO |