What is the working principle of an engine supercharger?

[OMalia]

Engine supercharger works as follows: the exhaust gas discharged from the engine cylinder drives the turbine impeller to rotate, which in turn drives the compressor impeller to pressurize the air filtered by the air filter and then send it into the cylinder. The function of the engine supercharger is to utilize the residual energy after engine exhaust to provide more compressed air to the engine, thereby achieving better operational performance. The supercharger is a device used by piston-type aircraft engines to increase the intake pressure of the cylinder, including: exhaust turbochargers, mechanical turbochargers, and electrically assisted turbochargers. Precautions for using the supercharger are: 1. Do not suddenly rev the engine after starting; 2. After the engine has been running at high speed for a long time, do not turn it off immediately; 3. Keep clean when disassembling the supercharger.