Purpose
The high-pressure fuel pump is designed to accumulate fuel under high pressure developed by the high-pressure fuel pump, distribute fuel to the injectors and maintain the required fuel pressure using a pressure sensor (5) and a pressure regulating valve (6). The pressure regulation process is controlled using the engine control unit. For the OM611 engine, the approximate volume of the high-pressure fuel pump is 35 cm³.
Design
VN 2.125
1. TKVD
2. Inlet pipe
3. Outlet pipes to the injectors
4. Fuel return pipe to the tank
5. Pressure sensor in the high pressure fuel pump
6. Pressure regulating valve in the high pressure fuel pump (Y74)
Tightening torques for threaded connections
Nut for fastening the high-pressure pipeline to the high-pressure pump and high-pressure fuel pump - 22 Nm.
The screw for fastening the high-pressure fuel pump to the cylinder head is 14 Nm.