The power system consists of:

  • - fuel tank;
  • - coarse filter;
  • - fuel fine filter;
  • - booster pump;
  • - injection pump pump;
  • - injectors.

Diesel D-245.12 Power Scheme

Fuel from the tank, which has passed through a coarse fuel filter, is supplied under a pressure of 0.8 ... 0.9 MPa by a fuel priming pump to the inlet fitting of the injection pump.

Under the influence of the created boost pressure, the protective valve opens access to the fuel through the supply channel to the above-plunger spaces.

The incoming cam of the rotor moves the plunger upwards, while the inlet of the inlet channel is blocked and with the further rise of the plunger, the fuel is compressed in the above-plunger space of the injection pump.

Compressed fuel enters the corresponding injector in accordance with the diesel cycle.

Excess fuel is returned to the tank.