VN 2.117
1.TKVD
2. Fuel tank
3. Fuel filter
4. Fuel temperature sensor (B50)
5. Fuel pump, combined with fuel level sensor (MLS)
6. Fuel injection pump (M41)
7. Pressure control valve a HPC (Y74)
8. Fuel injectors (Y76)
9. Fuel quantity control valve (Y94)
10. Pressure sensor in the high-pressure fuel pump (B4/6)
A. Fuel supply line
C. Fuel return lines to the tank
VN 2.118
1. Fuel tank
2. Fuel level sensor (M3/3b1)
3. Electric fuel pump (M3/3m1)
4. Fuel receiver block
Fuel in the low pressure circuit is supplied from the tank through the filter to the high pressure fuel pump.
Fuel is supplied to the low-pressure circuit using an electric fuel pump (5) built into the measuring and pump unit installed in the fuel tank.
The limiting valve built into the high-pressure fuel pump maintains the pressure at a level of 0.4 to 0.5 MPa (from 4.0 to 5.0 bar).