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What are the coolant tanks

(Summary description)The amount of antifreeze in the open expansion pot does not reflect the amount of coolant in the engine cooling system. The high temperature of the cooling system will cause the pressure of the cooling system to increase.

What are the coolant tanks

(Summary description)The amount of antifreeze in the open expansion pot does not reflect the amount of coolant in the engine cooling system. The high temperature of the cooling system will cause the pressure of the cooling system to increase.

Information

1. Open expansion pot
The amount of antifreeze in the open expansion pot does not reflect the amount of coolant in the engine cooling system. The high temperature of the cooling system will cause the pressure of the cooling system to increase. At this time, a part of the coolant may expand. Push the spring of the water tank cover and enter the expansion pot along the pipe on the side of the water tank cover, so as to ensure that the pressure of the cooling system will not be too large. to relieve pressure.
When the temperature of the cooling system drops, a certain degree of vacuum is generated inside, and the one-way valve on the water tank cover is sucked open. At this time, the coolant in the expansion pot is sucked back to the cooling system along the pipe. If the cooling liquid in the expansion pot is too small due to evaporation, the tube will not be able to absorb the cooling liquid, and the cooling liquid of the cooling system will be insufficient for a long time.

2. Closed expansion pot
The expansion pot is sealed, the lower part is connected to the cooling system, and the lid is a pressure limiting valve. When the pressure of the cooling system is high and the expansion is carried out, the pressure will directly press the cooling liquid into the expansion pot, push the pressure limiting valve on the lid, and discharge the gas to ensure the normal pressure of the cooling system. After the cooling system pressure drops, the coolant in the expansion pot returns to the cooling system.

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