2.4 Mjet Dpf Engine; Fuel Feed Rail (Common Rail); Features; Construction - Alfa Romeo 159 Training Material

ENGINE

3.2 1.9 / 2.4 MJET DPF ENGINE

3.2.1 Fuel feed rail (common rail)

1.9 16v 150cv
1. Fuel tank
2. Submerged pump assembly
3. Fuel filler tube
4. Inertia switch
5. Filter
6. Water in fuel sensor
7. High pressure pump
8. High pressure lines
9. Common rail
10. Injectors
11. Return line from injectors
12. Return line from rail
13. Fuel return manifold
14. Pump pressure regulator
15. Rail pressure regulator
16. Fuel pressure sensor

Features

High injection pressure (up to 1600 bar).
Modulated injection pressure from 150 to 1600 bar in all engine conditions.
Fuel supply up to 100 mm3/stroke at engine speed in the range from 100 to 6000 rpm.
Accurate injection control in terms of both advance and duration.
One or more pilot injections controlled before TDC according to engine speed and engine load.

Construction

The fuel feed system consists of a low pressure circuit and a high pressure circuit.
The low pressure circuit consists of:
auxiliary pump
fuel filter
fuel return manifold
connection lines.
The high pressure circuit consists of:
fuel pressure pump
common rail.
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