Due to this, the exhaust gases produced by the engine are specially formulated to allow the use of a three-way catalytic converter to reduce the concentration of toxic substances. The catalytic converter is used to convert the three main components of the exhaust gases ((1) unburned hydrocarbons (CH), (2) carbon monoxide (SO) And (3) nitrogen oxides (NOx)) into harmless substances. Multiport fuel injection system (MFI) can work in two modes:
- air-fuel ratio open-loop control («open-loop») carried out in accordance with the data previously recorded in the electronic engine control unit;
- air/fuel ratio feedback control («closed-loop») is carried out in accordance with the signals of the oxygen sensor entering the electronic engine control unit.