What is the expanded lid of a car
The car expansion kettle cap is an important component in the car cooling system, its main function is to regulate the pressure inside the cooling system to ensure the normal circulation of coolant and the normal operation of the engine.
The basic function of the expanded kettle lid
The expansion tank cap, also known as the pressure tank cap, is installed on the radiator of a car. It is equipped with a valve on it. This valve can automatically open when the internal pressure of the cooling system is too high to release the pressure and prevent damage to the cooling system. When the internal pressure of the cooling system exceeds the opening pressure of the steam valve on the tank cover (usually 0.12MPa), the steam valve will open and the radiator will start to work to release the hot steam in the tank, thereby reducing the temperature around the engine to ensure ENGINE normal operation .
The working principle of the expanded kettle lid
There is a pressure relief valve inside the expansion kettle lid. When the internal pressure of the cooling system is too high, the pressure relief valve will automatically open to release the excess gas and pressure, protecting the cooling system from damage. This prevents excessive evaporation of coolant and ensures the stable operation of the cooling system .
In addition, the expanded lid ensures coolant circulation and heat dissipation effect, avoiding cooling system failure due to excessive pressure .
Maintenance and common problems of expanded kettle LIDS
To ensure the normal operation of the car's cooling system, drivers should pay attention to the maintenance of the expansion kettle lid. Do not add tap water to the radiator, as long-term use of tap water can cause rust or scale to form in the radiator, which will affect the flow of antifreeze in the cooling system, reduce the radiator's heat dissipation performance, and in severe cases, may damage the engine. It is recommended to use specialized coolant to ensure the efficient operation of the cooling system .
The main functions of the car expansion kettle lid include controlling pressure and discharging gas.
The expansion kettle cap is an important component installed on the car radiator, and its main function is to control the pressure inside the radiator. When the internal pressure of the cooling system exceeds the opening pressure of the steam valve on the cap of the reservoir (about 0.12MPa), the steam valve will automatically open, the radiator will start to work, and the hot steam in the reservoir will be discharged into the large cycle, thereby reducing the temperature around the engine to ensure ENGINE normal operation .
This design effectively prevents excessive pressure inside the cooling system, avoiding engine overheating or damage .
In addition, the expanded lid of the kettle also has the following specific functions:
Youdaoplaceholder0 provides expansion space : The expansion tank not only stores antifreeze but also provides expansion space for coolant, ensuring that coolant does not overflow at high temperatures .
Youdaoplaceholder0 Discharge of gas and water vapor : The pressure relief valve on the lid of the expansion kettle will automatically open when the pressure is too high, releasing excess gas and water vapor to prevent the pipe from bursting .
Youdaoplaceholder0 Make sure the level is normal : There are top and bottom liquid level marking lines on the surface of the expansion tank to help keep the antifreeze level within the normal range and prevent leakage or excessive pressure .
The symptoms and causes of automobile expansion kettle cap failure mainly include the following :
Youdaoplaceholder0 Antifreeze spray : When the expansion kettle cap is damaged, antifreeze is sprayed out of the tank cap .
Youdaoplaceholder0 Engine overheating : Due to the reduced flow of antifreeze and the drop in antifreeze pressure, the heat generated by the engine during operation cannot be dissipated in time, which may cause the engine to overheat. In severe cases, it may even boil over .
Youdaoplaceholder0 Pressure relief valve failure : If the pressure relief valve cannot open, excessive pressure in the cooling system may cause the kettle to crack and leak. Check and replace in time.
Youdaoplaceholder0 The basic functions and importance of an expanding kettle lid :
Youdaoplaceholder0 Store antifreeze : The expansion tank not only stores antifreeze but also provides expansion space to remove air and water vapor from the coolant in time, improving cooling efficiency .
Youdaoplaceholder0 Pressure control : The pressure relief valve on the lid of the expansion kettle opens automatically when the pressure is too high, releasing excess gas to prevent the pipe from bursting .
Youdaoplaceholder0 Heat dissipation efficiency : The expansion tank can separate and accommodate the gas from the water channels of the cooling system, ensuring heat dissipation efficiency and preventing air blockage from causing poor heat dissipation and water temperature rise .
Youdaoplaceholder0 Methods for maintaining and replacing the lid of an expansion kettle :
Youdaoplaceholder0 Regular checks : Regularly check the liquid level and sensors to ensure they are functioning properly. Check the plug condition and replace if necessary.
Youdaoplaceholder0 Replace the pressure relief valve : If the pressure relief valve fails, check and replace in time.
Youdaoplaceholder0 Maintenance and replacement : When replacing the drain pipe, use the original parts, make sure the clips are in place, and finally add antifreeze .
If you want to know more, keep reading the other articles on this site!
Please call us if you need such products.
Zhuo Meng Shanghai Auto Co., Ltd. is committed to selling MG&MAXUS auto parts welcome to buy.
