VN 2.117
1.TKVD
2. Fuel tank
3. Fuel filter
4. Fuel temperature sensor (B50)
5. Fuel pump integrated with fuel level sensor (MZ/Z)
6. injection pump (M41)
7. Pressure control valve a TKVD (Y74)
8. Fuel injectors (Y76)
9. Fuel quantity control valve (Y94)
10. Pressure sensor in TKVD (В4/6)
A. Fuel line
C. Fuel return lines to the tank
VN 2.118
1. Fuel tank
2. Fuel level sensor (M3/3b1)
3. Electric fuel priming pump (M3/3m1)
4. Fuel receiver unit
Fuel in the low pressure circuit is supplied from the tank through a filter to the high pressure fuel pump.
The fuel supply in the low pressure circuit is carried out using an electric fuel pump (5), built into the measuring and pumping unit installed in the fuel tank.
The restrictive valve built into the injection pump maintains the pressure at a level of 0.4 to 0.5 MPa (4.0 to 5.0 bar).