Fuel supply to the engine
The components of the Digifant fuel injection system include: a fuel tank, an activated carbon tank - a fuel vapor filter, fuel lines, a fuel filter, a fuel pump.
Repair, inspection and maintenance of these nodes and described below. How the Digifant system works
The electric fuel pump (1) (see Fig. 245) delivers fuel at the appropriate pressure from the tank to the filter (2). Through the pipeline, the fuel enters the individual nozzles (4).
245 Digifant fuel supply system 1 - electric fuel pump, 2 - fuel filter, 3 - fuel pressure regulator, 4 - injectors
The fuel pressure regulator (3) maintains a constant fuel injection pressure.
Excess fuel is diverted to the fuel tank via the low pressure fuel line.
Warming up the engine
When the engine is warming up, immediately after it is started at low temperatures, the engine requires a rich mixture, because
some of the injected fuel condenses on the cold cylinder walls. In addition, in order to compensate for the increased internal friction, the motor must generate more torque to keep the XX frequency constant. Under these conditions, the engine needs to supply an increased amount of a rich mixture.
The increase in the amount of air supplied by the engine during idling is implemented using an additional air supply valve, which opens the air supply to the cylinders, regardless of the position of the damper. The enrichment of the mixture in the warm-up phase of the engine is carried out by the microprocessor module of the Digifiant injection system (based on information received from the temperature sensor) by a corresponding increase in the injection duration.