Turbocharger

Petrol engines 125 hp/92 kW (release from September 1984 to August 1985) equipped with a turbocharger. Two turbine wheels sit on one axis of the turbocharger, placed in two cases isolated from each other. The turbine wheels are driven by useless exhaust gases. They accelerate the turbocharger axle to 120,000 rpm. And, since the exhaust and fresh air rotors sit on the same axle, fresh air is pumped into the cylinders at the same RPM.

Due to the good fill factor, a power increase of up to 100% is achieved on existing engines. Among other things, the increase in power depends on the boost pressure, which in a passenger car engine is from 0.4 to 0.8 bar (for comparison, tire pressure is about 1.8 bar). When the boost pressure exceeds the value set at the factory, the pressure relief valve opens.

Along with the power when using a turbocharger, the torque also increases, which is very important from the point of view of ensuring the flexibility of engine control. However, the condition is to ensure a high number of revolutions and thus a significant filling factor. As a general rule, the engine must be running at almost 2500 rpm to provide appreciable boost pressure.

The turbocharger is an extremely precision-made element. Therefore, it is recommended to entrust its repair only to a good specialist. As a rule, in case of a defect, the turbocharger is replaced as a set.