2f3e5fd0 EFI system (Electronic system of injection of fuel)

Fig. 2.47. Scheme of the EFI system (Electronic system of injection of fuel)

The system of injection of fuel with electronic control like L (fig. 2.47) directly determines the mass of air on an admission by the sensor of a consumption of air of termoanemometrichesky type. The independent system of injection (in which fuel is injected into each cylinder once for each two turns of a bent shaft) is applied. Besides, at launch of the engine the group injection is used (fuel is injected once into two cylinders for each turn of a bent shaft). There are two operating modes of system of injection of fuel:
a) synchronous injection at which the basic duration of injection is corrected on signals of sensors so that the injection of fuel happened always at a certain provision of a bent shaft;
b) asynchronous injection at which the injection of fuel is made at detection of inquiries on signals of sensors irrespective of an angle of rotation of a bent shaft.
Besides, the system makes a fuel cut-off at which the fuel injection temporarily stops according to traffic conditions for protection of the engine and increase in fuel profitability.