초록 ▼

An enhanced split cooling system for a turbocharger and an engine includes an oil cooler, a three-way valve assembly and a four-way valve assembly for controlling the flow of coolant, and radiators and subcoolers, for controlling coolant temperature. The valve assemblies are independently controllab

An enhanced split cooling system for a turbocharger and an engine includes an oil cooler, a three-way valve assembly and a four-way valve assembly for controlling the flow of coolant, and radiators and subcoolers, for controlling coolant temperature. The valve assemblies are independently controllable to direct coolant through an oil cooler and a turbocharger intercooler either directly from the engine if the oil cooler and intercooler require heating or from the radiators and subcoolers if the oil cooler and intercooler require cooling. Depending upon the engine operating temperature, the valve assemblies can be configured to establish at least three different coolant processing modes.

대표청구항 ▼

[ What is claimed is:] [1.] An enhanced split cooling system for a turbocharged internal combustion engine including a liquid cooled turbocharger and an engine liquid coolant jacket, comprising:a coolant pump for pumping coolant from a coolant storage tank into heat exchange relationship with the en

[ What is claimed is:] [1.] An enhanced split cooling system for a turbocharged internal combustion engine including a liquid cooled turbocharger and an engine liquid coolant jacket, comprising:a coolant pump for pumping coolant from a coolant storage tank into heat exchange relationship with the engine jacket and turbocharger;an oil cooler;a first valve assembly including a blocking valve and a pair of flow directing valves;a first coolant output line for conveying coolant from the engine to the first valve assembly and a second coolant output line for selectively flowing coolant from the engine to the oil cooler;a second valve assembly including a blocking valve and a flow directing valve, said first coolant output line being connected to an input of said second valve assembly;a radiator connected via a third coolant line for receiving coolant from the second valve assembly and having a coolant outflow line to return coolant to the coolant tank;an intercooler operatively associated with the turbocharger for passing the coolant in heat exchange relationship with compressed air in the turbocharger;a lube oil subcooler coupled by a fourth coolant flow line to receive coolant from the radiator and having a coolant outflow line selectively couplable through the first valve assembly to the oil cooler and the coolant tank; andan intercooler subcooler coupled by a fifth coolant flow line to receive coolant from the first subcooler and having a coolant outflow line selectively couplable through the first valve assembly to the coolant tank and the intercooler;each of the first and the second valve assemblies being independently operable for selectively directing coolant flow through the radiator and subcoolers and the oil cooler and intercooler as a function of engine operating temperature.