Throttle pipe (TBI-system) — general information

Electronic fuel injection provides an optimal fuel-air mixture. This ensures the operation of the engine with the lowest fuel consumption, which significantly reduces the toxicity of exhaust gases.

All vehicles in question use a two-injector injection system through a throttle pipe, which form a TBI module. The system is known as the Model 220.

Automatic control of the TBI system is provided by the ECM, which monitors engine performance and regulates the air-fuel ratio in all engine operating modes.

An electric fuel pump located in the fuel tank along with a fuel gauge pumps fuel to the TBI module through the fuel line and fuel filter. The regulator maintains a constant pressure in the nozzles at the level of 0.5-0.8 atm. Excess fuel is returned to the tank.