| 摘要 |
PROBLEM TO BE SOLVED: To provide a cooling system for a vehicle, which can make a refrigerant circulate in a low-temperature circuit by a refrigerant pump which makes a refrigerant of a main circuit circulate.SOLUTION: In a main circuit 2, cooling water for cooling an engine 7 can be made to flow in a circulated manner, and a water pump 3 makes the cooling water of the main circuit 2 circulate. A high-temperature heat exchanger 4 is arranged at the main circuit 2 on an upstream side of the water pump 3, and cools the cooling water whose temperature is raised by the engine 7. A low-temperature circuit 5 makes the cooling water which is branched from the main circuit 2 at a downstream side of the water pump 3 and flows in from the main circuit 2 circulate to an intercooler 15 and an EGR cooler 16 for cooling intake air of the engine 7, and after that, makes the cooling water be joined to the main circuit 2 at the upstream side of the water pump 3. A low-temperature heat exchanger 6 is arranged at the low-temperature circuit 5 at an upstream side of the intercooler 15 and the EGR cooler 16, and cools the cooling water which flows in from the main circuit 1.SELECTED DRAWING: Figure 1 |
