Turbochargers were originally known as turbosuperchargers when all forced induction devices were classified as superchargers, but now the term “supercharger” is usually applied only to mechanically driven forced induction devices. So, a turbocharger is a turbine-driven forced induction device that increases an internal combustion engine’s efficiency and power output by forcing extra air into the combustion chamber.
The compressor can force more air and proportionately more fuel into the combustion chamber than atmospheric pressure alone. In the video below you can see that the process of turbochargers production combines precision machining and ancient methods of metal shaping and of course there are the skilled hands of the technicians!
Check it out!