1 Transmission oil cooler: Cooling the lubricating oil of the transmission, installed in the lower radiator of the engine radiator or outside the transmission case, if it is air-cooled, it is installed on the front side of the radiator.
2 retarder oil cooler: Lubricating oil when the retarder is working, the installation position is outside the gearbox, mostly for shell-and-tube or water-oil composite products.
3 Exhaust gas recirculation cooler: It is a kind of exhaust gas and device used to cool part of the return to the engine cylinder, in order to reduce the content of nitrogen oxides in the automobile exhaust.
