The role of the automobile expansion tank assembly
The main role of the automobile expansion water tank assembly includes the following aspects :
Balance system pressure : The expansion tank can contain more coolant than normal, relieving pressure and avoiding component damage. When the engine is running to produce a lot of heat, the coolant will expand, the expansion tank can store this excess coolant, prevent the system pressure is too high .
Maintain system stability : The expansion tank absorbs and releases pressure to keep the water pressure stable and ensure the normal operation of the pump. It also balances the pressure changes within the system and keeps the cooling system operating in standard condition .
Prevent engine overheating : By holding the expanded coolant, the expansion tank prevents the engine from being damaged due to excessive temperature. When the coolant expands under heat, the excess coolant will be stored in the expansion tank to avoid excessive system pressure .
Reduced coolant losses : Reduce coolant losses and improve system efficiency by converting the cooling system to a permanently closed system. At the same time, the expansion tank is designed so that the coolant does not overflow, keeping the system enclosed .
prevents air entry and corrosion : The expansion tank can reduce air entry into the system and prevent damage to the parts due to oxidation. By separating water and steam, keep the internal pressure of the system stable, reduce the occurrence of cavitation .
Observe liquid level changes : the expansion tank is usually marked with a scale, which is convenient for the owner to observe the change of the liquid level and check whether the coolant amount is normal in time. In addition, the transparent design of the expansion tank also facilitates the user to visually observe the status of the coolant .
safe pressure relief : the lid of the expansion tank has a pressure relief valve. When the system pressure is too large, the pressure relief valve will be opened to release the pressure in time to avoid serious losses .
exhaust and dosing : The expansion tank can also discharge the air in the system, and put chemical agents for chemical treatment, and maintain the cleanliness and efficiency of the system .
automotive expansion water tank assembly is a device for storing and releasing superheated steam in the engine cooling system, its main function is to keep the pressure of the cooling system stable and prevent the engine from overheating or damage caused by excessive pressure.
constituent
Automotive expansion tank assembly usually includes the following main parts:
Water storage container : This is the main part of the expansion tank. It is usually made of steel plate and can be round or rectangular in shape.
float ball valve : when the system pressure increases, the float ball valve will automatically open, the excess water into the expansion tank; When the system pressure is reduced, the float ball valve automatically closes, transferring water back to the system .
exhaust valve : allows air bubbles to enter the system to prevent excessive pressure .
Working principle
As the engine works, the coolant absorbs heat and produces steam, which is collected into the expansion tank. As the steam increases, the pressure in the tank also rises. When the pressure reaches a certain degree, the expansion tank will release part of the steam into the atmosphere through the float ball valve and the exhaust valve, thereby reducing the pressure and maintaining the normal operation of the cooling system .
In addition, the expansion tank can also adjust the total capacity of the system by adding or releasing coolant to the cooling system to adapt to the needs of the engine in different working conditions .
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