In engines with a compressor or overhead forced air requires cooling, then the pressure can be made higher, driving into the cylinders more oxygen. After compress cold air (cylinder ice) lighter than hot. The air passing through the turbine, is heated by the compression, as well as parts of turbocharger, heated exhaust gases. Supplied to the engine air is cooled by means of a so-called intercooler (intercooler). This radiator mounted in the path of air from the compressor to the cylinders of the engine. Passing through it, it gives up its heat to the atmosphere.