What is the function of the car auxiliary water tank?
2 Answers
Car auxiliary water tank mainly has the following functions: 1. The auxiliary water tank serves as an auxiliary to the radiator and is also an important component of the cooling system. The radiator generates certain pressure when the temperature fluctuates, and the auxiliary water tank can regulate this. When the engine temperature is high, the liquid expands, and some of the antifreeze flows into the auxiliary water tank through the radiator cap; when the temperature drops and the cooling system pressure becomes negative, the system draws the antifreeze from the auxiliary water tank back into the cooling system through the radiator cap. 2. At the same time, the auxiliary water tank has corresponding markings indicating the liquid level, which can visually show the current water level in the radiator and whether it is sufficient.
Speaking of the overflow tank, I've been around the car business for quite some years and know this little thing is quite practical. The overflow tank is actually part of the cooling system, mainly used to store excess coolant when it heats up and expands, preventing it from spilling outside the car. After the car starts, the coolant volume increases, and the overflow tank catches it; when the car stops and cools down, the liquid contracts back, and the radiator draws coolant from the overflow tank to refill. This keeps the entire system sealed and free of air leaks, avoiding engine overheating or rust issues. I often remind my friends to check the overflow tank's fluid level, ensuring it's always between the minimum and maximum lines. If the level is too low, air might enter, causing poor circulation, and the engine temperature could skyrocket, leading to trouble. Don’t underestimate it—proper maintenance can save you from costly repairs.
