An
intercooler is a device used on
turbocharged &
supercharged internal-combustion engines to cool down the intake charge after the supercharging affect has introduced
heat. An intercooler is similar to a
radiator except the air to be cooled passes through the inside rather than water, and ambient air flows across the intercooler core to reduce the charged air's temperature. A
water cooled intercooler (where water is used to cool the charge and a separate "radiator" is used to cool the water) is typically referred to as a chargecooler.