Prevent the engine from overheating. Because of the large specific heat capacity of water, the temperature did not rise much after absorbing the heat of the cylinder block. Therefore, the heat of the engine passes through the liquid loop of cooling water, and water is used as the heat carrier to conduct heat, and then the heat is dissipated by convection through a large area of fins, so as to maintain the appropriate working temperature of the engine.
Extended data
function
When the engine water temperature is high, the water pump pumps water repeatedly to reduce the engine temperature. The water tank consists of hollow copper pipes. High temperature water enters the water tank and circulates to the engine cylinder wall after air cooling) to protect the engine. If the water temperature is too low in winter, the water circulation will stop at this time to avoid the engine temperature being too low.
Automobile water tank is mainly composed of radiator core, water pipe, cooling blades, upper water tank and lower water tank. The upper water tank is on the radiator, and the upper water tank is connected with the water tank below the radiator through a water pipe.
When the hot water flows from top to bottom to the lower water tank, it becomes warm water, and the cooling fan blades form a small hole. Through the suction of the fan and the relative wind speed when the car moves forward, a large amount of cold air passes through the air holes, absorbs the heat of the cooling water flowing through the water pipes, and then dissipates into the atmosphere.
The car water tank is not filled with tap water, but with antifreeze, which cannot be replaced by tap water. Tap water is easy to boil, which is unqualified. Antifreeze can reduce the temperature and control the temperature, and there are many substances in tap water, which are easy to produce rust, but it is very slow to produce antifreeze, and it has a certain cleaning effect after replacement.