Supercharger, a device used by a piston aeroengine to increase the cylinder intake pressure. The air entering the engine cylinder is first compressed by the supercharger to increase the density of the air, allowing more air to be filled into the cylinder, thereby increasing engine power. In addition to the large takeoff power, the supercharged engine can also improve the engine's height characteristics.

Supercharger for automobiles: The so-called supercharging is a technique of pre-compressing air before it is supplied to the cylinder to increase the density of the air and increase the amount of intake air. The aim is to increase the amount of inflation, increase power, improve economy and improve emissions.