Intercoolers are generally only visible in vehicles with superchargers. Because the intercooler is actually a turbocharged accessory, its function is to reduce the temperature of the high temperature air after boosting, to reduce the thermal load of the engine, increase the intake air amount, and thus increase the power of the engine.
The high quality car intercooler is actually a turbocharged accessory that serves to improve the engine's ventilation efficiency. The intercooler is generally made of an aluminum alloy material. According to different cooling media, common intercoolers can be divided into air-cooled and water-cooled. The intercooler is an efficient radiator that cools the fresh air before it enters the engine.
An intercooler is just another name for a heat exchanger that is used to cool air that has been compressed by either a Super-Charger or a Turbocharger. The intercooler is placed somewhere in the path of air that flows from the turbo/supercharger to the motor. An intercooler is needed because of the physics of air described in the Ideal Gas Law, that is PV=nRT.