Apparatus and method for controlling a fan drive a charge air cooler of an internal combustion engine

Disclosed is an apparatus for controlling a fan drive a charge air cooler for a rail vehicle, having a regulating device for regulating and / or control of the charging air cooler. A cooling demand of the charge air cooler is in this case determined on the basis of data motor of an internal combustion engine, the charge air to be cooled. Additionally or alternatively, the charge air cooler can be controlled by the control device due to an environmental temperature and / or an ambient air density.