For us, the car is the best choice for our daily life. Because the car was fast and comfortable, our experience was very good. With a car, you can catch the bus without the subway! So, do you know anything about cars? Do you know anything about cars? For example, do friends know about car radiators? Today, let me make a brief introduction.
The automobile radiator is composed of inlet chamber, outlet chamber and radiator core. The antifreeze liquid flows into the radiator core, and the air body flows out of the radiator. Hot antifreeze cools by dissipating heat to the air body, while cold air heats by absorbing the heat given off by the antifreeze.
Automotive radiators classification：
According to the flow of antifreeze in the radiator, the radiator can be divided into longitudinal flow type and transverse flow type.
According to the structure of the radiator core, the radiator can be divided into tubular radiator core, tubular radiator core and plate radiator core.
Automotive radiators: construction
Automobile radiator is an indispensable part of automobile water-cooled engine cooling system, which is developing towards lightweight, high efficiency and economy. The structure of car radiators may not necessarily adapt to new developments.
The core of a tubular radiator consists of a number of thin cooling tubes and fins. Most cooling tubes use oblate cross sections to reduce air resistance and increase heat transfer area.
The radiator core should have enough circulation area for the antifreeze to pass through, and there should also be enough circulation area for the air body to take away the heat transferred to the radiator by the antifreeze through the air body. At the same time, there must be sufficient heat dissipation area to complete the heat exchange between the antifreeze, the air body and the radiator.
The tubular radiator is welded by alternating arrangement of corrugated cooling strips and cooling pipes.
Compared with the tubular radiator, under the same conditions, the heat dissipation area of the tubular radiator can be increased by about 12%. In addition, the dispersion zone is also provided with holes similar to shutters, which disturbs the air flow, destroys the adhesion layer of the circulating air body on the surface of the dispersion zone, and improves the heat dissipation capacity.
After reading the introduction of the small car series, do friends have the necessary understanding of the car radiator? So, did your friends like the content knowledge that Bienshaw Cars introduced to your friends today? Car side Shaw thinks these friends still need to know. Quite a car is so important to us that we have to work in daily life radiator is the use of coolant loss of heat, in order to ensure the proper temperature of the internal combustion engine, cooling water loss of heat is indispensable. Generally rely on the engine driven by the pump to make the cooling water in the engine in various parts of the forced circulation, the coolant absorbs the heat generated by the engine and distributes it to the air device is the radiator.
The basic performance of the radiator is characterized by various temperatures and heat before and after the heat exchange between the air of the low temperature fluid and the water of the high temperature fluid. It is determined by the temperature of the air and water at the entrance of the radiator, the entire heat dissipation area of the radiator, the heat transfer rate, the temperature after the air absorbs heat when each fluid (air, water) is heated, the temperature after the water releases heat and the heat of the water (the heat absorption of the air). Whether the heat discharge is consistent with the desired target temperature is the basis for determining the basic performance of the radiator.
When moving a car, the heat generated is enough to destroy the car itself. So a cooling system is installed on the car to protect it from damage and keep the engine in the proper temperature range. 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 has two main components, the radiator sheet, which consists of small flat tubes, and the overflow tank (on the upper, bottom, or sides of the radiator sheet).
If the core tube of the radiator is leaking, remove it for inspection. First determine the leakage part of 117kPa cloth, clean the surface, and solder with a soldering iron. After welding repair, compressed air (117kPa pressure) is generally used for pressure test, which shall not leak for 1min, otherwise it will be repaired again. The repaired welds should be solid, reliable, beautiful and remove surface burrs. It is allowed to cut the core tube that passes through the coolant, but not.1m22. The broken pipe head should be welded tightly and should not leak. The welding of the radiator shall not be more than 1 place per 0.1m2 front area of the core. Otherwise there is no repair value, can only be scrapped.
When you notice a radiator leak, you should take immediate action, but it is equally important to pinpoint the source of the problem (i.e. the cause). Why did the leak happen? This is usually the result of a radiator leak that has worn out and is of poor quality.
It reduces resistance to corrosion and all types of damage. Older cars should be especially aware of this phenomenon, the connection between the cooling system pipes can be loosened. However, sometimes damage to engine cylinder head gaskets can occur. Then there is the risk of the expansion tank bursting and leaking.
Therefore, it can be concluded that the radiator leak is caused by the wear of the parts and needs to be replaced or repaired. This is why we most often talk about radiator leaks in the case of older models. However, new cars are not immune to this problem.
What other factors can cause coolant loss? The purpose of a radiator is to release heat. Therefore, it is installed where it can best perform its function, namely the front of the vehicle.
Although the radiator is protected by the grille in the hood or bumper, the radiator can still be subject to mechanical damage, such as rock strikes. Even a minor crash can affect the operation of a component.
Improper operation may also be the cause of coolant loss. The cooler is a subtle element. In an emergency, you can refill fluids with distilled water, but not with regular water.
If we add water to the system instead of coolant, we may initiate a corrosion process that is difficult to stop. Stones also settle out of the water.
Winter watering is especially harmful. It may simply freeze, causing a leak and permanent damage to the radiator. The coolant has a low freezing point and also has anti-corrosion properties.
If the radiator is leaking badly and the expert believes it has worn out enough, he may recommend replacing it as the only reasonable solution. However, this is not an easy activity, and you certainly need to be prepared to violate the household budget. Most cars need to remove the front bumper and headlights.
In addition, the process involves draining the liquid from the cooling system, disconnecting the fan and removing the hose. Are you sure you can do this by yourself? You must remember that after replacing the radiator, the system must be vented and renewed with new coolant.
