HIGH/LOW TEMPERATURE WATER-COOLED COOLING SYSTEM

摘要

PURPOSE: A high/low temperature water-cooled cooling system is provided to reduce heat energy loss due to over-cooling. CONSTITUTION: A cooling system includes a radiator; a charge air cooler(CAC); An oil cooler(O/C); a water pump(5); and a thermostat(7). The radiator comprises a high temperature part radiator(2) and a low temperature part radiator(1) integrated. The high temperature part radiator make coolant flowing in from an engine(6) exchange heat with outside air to cool down. The low temperature part radiator takes in a part of coolant, cooled down in the high temperature part radiator and discharged, from the water pump to make exchange heat with outside air again and discharges again. The CAC(3) takes in coolant from the low temperature part radiator to make exchange heat with supercharged air supplied to a combustion chamber of the engine to cool down the supercharged air. The O/C(4) takes in coolant discharged from the CAC to make exchange heat with oil circulating in an oil circulation circuit. The water pump pumps coolant discharged from the high temperature part radiator and the O/C to forcibly deliver to a water jacket of the engine. The thermostat guides coolant discharged from the engine to the high temperature part radiator if temperature of the coolant is over standard temperature and makes the coolant passed to the water pump if the temperature of the coolant is under the standard temperature.