| 摘要 |
<p>An enhanced split cooling system and method for a turbocharged internal combustion engine including a liquid cooled turbocharger 19 and an engine liquid coolant jacket 18, the system comprising a coolant pump 12 for pumping coola nt from a coolant storage tank 16 in heat exchange relationship with the engine jack et 18 and turbocharger 19; an oil cooler 32 having coolant input and output lines; a valve assembly 74, 83 including a mufti-port rotary valve actuated by a single actuator; a first coolant output line connected for conveying coolant from the engine to the valve assembly 74, 83; a radiator 22 connected via a second coolant line for receiving coolant from the valve assembly 74, 83 and having a coolant outflow line to return coolant to the coolant tank 16; an intercooler 28 operatively associated wit h the turbocharger 19 for passing the coolant in hear exchange relationship with compressed air in the turbocharger 19; a lube oil subcooler 46 coupled by a third coolant flow line to receive coolant from the radiator 22 and having a coola nt outflow line selectively couplable through the valve assembly 74, 83 to the oil cool er 32 and the coolant tank 16; an intercooler subcooler 24 coupled by a fourth coolant flow line to receive coolant from the oil subcooler 46 and having a coolant outflow li ne selectively couplable through the valve assembly 74, 83 to the coolant tank 16 and the intercooler 28; and the valve assembly 74, 83 being independently operable f or selectively directing coolant flow through the radiator 22 and subcoolers 46 , 24 and the oil cooler 32 and intercooler 28 as a function of engine operating temperature.</p> |
