Turbocharger Cooling

The turbocharger receives an oil supply for lubrication and cooling purposes. In addition to the cooling provided by the engine lubrication system, the turbocharger also requires a supply from the engine coolant system to assist with the cooling due to the high loads on the turbocharger. A pipe connection from the cylinder block routes engine coolant through the body of the turbocharger bearing housing. Once the coolant has passed through the bearing housing, it is returned to the cooling system via the water outlet on the cylinder head.