Industry News

What is the function of the car radiator

2023-10-24

The working principle of the car radiator is like this, according to the water temperature, the engine load, the signal is transmitted to the computer, the engine computer controls the fan high and low speed relay, and is also affected by the air conditioning pressure, the air conditioning computer receives the air conditioning pressure switch, indoor and outdoor temperature, and other signals, and then passes the air conditioning signal to the engine computer through the bus. 


The engine receives the signal that it can open, control the compressor, and control the fan relay suction, when the air conditioning pressure is increased by the environment and its own influence, the engine computer receives the air conditioning computer signal, control the fan high-speed relay suction, and the fan high-speed operation. The role of the engine radiator is to protect the car from damage and keep the engine in the proper temperature range. The radiator belongs to the automobile cooling system. The radiator in the engine water cooling system is composed of the inlet chamber, the outlet chamber, the main plate and the radiator core, which uses water as the heat carrier to conduct heat through the large area of the heat sink to dissipate heat by convection to maintain the appropriate working temperature of the engine. 


The radiator cools the engine through forced water circulation, is a heat exchange device to ensure that the engine works continuously within the normal temperature range, and is essential in the car. The engine radiator, also known as the engine water tank, is a key component of the water-cooled engine cooling system. Cooling the engine by forced water circulation is a heat exchange device that ensures continuous operation of the engine within the normal temperature range. The automobile radiator is composed of three parts: inlet chamber, outlet chamber and radiator core.


 The coolant flows inside the radiator core and the air passes outside the radiator. The hot coolant cools as it dissipates heat to the air, while the cold air heats up by absorbing the heat emitted by the coolant. Automotive radiator materials and manufacturing technology are developing rapidly. Aluminum radiator with its obvious advantages in material lightweight, in the field of cars and light vehicles gradually replace the copper radiator at the same time, copper radiator manufacturing technology and process has been greatly developed, copper brazed radiator in passenger cars, construction machinery, heavy trucks and other engine radiator advantages are obvious. 


The radiators of foreign cars are mostly aluminum radiators, mainly from the perspective of protecting the environment (especially in Europe and the United States). In new European cars, the proportion of aluminum radiators is an average of 64%. From the perspective of the development of automobile radiator production in China, the aluminum radiator produced by brazing is gradually increasing. Brazed copper radiators are also used in buses, trucks and other engineering equipment. The function of the car cooling system is to keep the car in the appropriate temperature range under all working conditions. 


The cooling system of a car is divided into air cooling and water cooling. The air as the cooling medium is called the air cooling system, and the coolant as the cooling medium is called the water cooling system. Usually, the water cooling system consists of a pump, radiator, cooling fan, thermostat, compensation bucket, water jacket in the engine body and cylinder head, and other auxiliary devices. Among them, the radiator is responsible for the cooling of circulating water, its water pipe and heat sink are made of aluminum, aluminum water pipe is made into a flat shape, the heat sink is corrugated, pay attention to the heat dissipation performance, the installation direction is perpendicular to the direction of air flow, as far as possible to achieve small wind resistance and high cooling efficiency. The coolant flows inside the radiator core, and the air passes outside the radiator core. 


The hot coolant cools because it dissipates heat to the air, and the cold air heats up because it absorbs the heat emitted by the coolant, so the radiator is a heat exchanger. Car radiator as the car interior heat transfer and thermal conductivity components, for the car plays an important role, car radiator material is mainly aluminum or copper, radiator core is its main components, with coolant, in popular terms, car radiator is a heat exchanger heat and water tank as a car heat dissipation device, in terms of its material, is metal corrosion resistance, Therefore, it should be avoided from contact with corrosive solutions such as acid and alkali to avoid damage. For the car radiator, blockage is a very common failure, reduce the occurrence of blockage, which should be injected with soft water, hard water needs to be softened and then injected, so as not to produce scale caused by the blockage of the car radiator. 


The winter weather is cold, the radiator is easy to freeze and expand and freeze, so antifreeze should be added to avoid the freezing of water.


The function of the radiator is very simple, it is used to increase the air velocity and flow rate through the radiator to enhance the heat dissipation capacity of the radiator and cool the engine accessories.


In the automobile cooling system, the main components of the radiator include: radiator core, inlet chamber, outlet chamber and main piece. The structure of the core of the radiator is mainly divided into two categories: tube belt type and tube plate type. The tubular belt radiator is composed of corrugated heat dissipation and cooling pipe interarranged by welding, like shutters, the heat dissipation belt also has a small hole of disturbing air flow, which is used to destroy the adhesion layer of flowing air on the surface of the heat dissipation zone, increase the heat dissipation area and improve the heat dissipation capacity. The core of the tubular radiator is composed of many thin cooling tubes and heat sinks, and the cooling tubes mostly adopt flat and circular sections to reduce the air resistance and increase the heat transfer area.


In short, the requirements for the radiator core are still very strict, to have a large enough area, both to facilitate the passage of coolant, but also to facilitate as much air circulation as possible, but also must be conducive to the greatest degree of heat dissipation.


How it Works: The coolant flows inside the radiator core, and the radiator core is wrapped by air. When the engine works, huge heat is generated, which increases the temperature of the coolant. The hot coolant achieves the purpose of cooling by continuously dissipating heat to the surrounding air, while the cold air causes itself to heat up due to the absorption of the heat emitted by the coolant. Through the mutual transfer of hot and cold to help the engine to cool down and ensure its normal operation.


Role of radiator


The radiator is the main part of the cooling system to protect the engine from damage caused by overheating. The principle of the radiator is to use cold air to reduce the temperature of the coolant from the engine in the radiator. The radiator belongs to the automobile cooling system, and the radiator in the engine water cooling system is composed of three parts: inlet chamber, outlet chamber, main plate and radiator core. The radiator cools the coolant that has reached high temperature. When the tubes and fins of the radiator are exposed to the airflow generated by the cooling fan and the airflow generated by the movement of the vehicle, the coolant in the radiator becomes cold.