What is the application of cooling fan in car?

It is mainly used for engine heat dissipation and coolant heat dissipation to ensure that the engine does not fail due to high temperature.

Automobile engines must be moderately cooled in a high-temperature working environment to keep them working at a suitable temperature to meet the requirements of good engine performance, durability and exhaust emissions.

The engine cooling system plays a key role here. It mainly includes cooling fans, water tanks, thermostats and other components.

Types of automotive radiators:

Steel radiator. In this kind of radiator, according to its different materials and performance, we divide it into plate type and column type, but in the actual purchase of this kind of radiator, we should also pay attention to the safety problem, after all, when used in the car, if the product quality is poor, there will be a great safety risk, and it will cause a great threat to the car and people.

Iron radiator and aluminum radiator. In the past few years, these two kinds of radiators are still widely used, but because there are still many drawbacks in their performance, the advantages are not as obvious as steel radiators, and now they have been replaced by steel radiators, and it is difficult to see these two kinds of radiators in the market now.

There are currently three types of automotive radiator fans.

1. The machine is directly driven by the belt.

The advantages are: simple structure, low cost and low failure rate.

The disadvantage is: poor balance is not conducive to high-speed engine, it will affect the instantaneous torque increase of the engine, and the heat dissipation is not good. It is generally used in engines with high torque and low speed, such as large trucks or buses.

2. Silicone oil fan is an upgraded version of mechanical dispersion.

The advantages are: it will not affect the instantaneous torque increase of the engine, and the fan speed can be controlled by the water temperature of the engine.

Disadvantages: complex structure, high maintenance.

3. The electronic fan is controlled by the computer, and the fan rotates.

Advantages: The structure is simple, and the fan speed can be controlled by relying on the water temperature, load and other data of the engine. It can provide stable heat dissipation to the engine and balance the operating temperature of the engine.

Disadvantages: The control logic is complicated and the maintenance is inconvenient.

DC cooling fan is to use direct current to provide power for it, there are two parts of stator and rotor, there are magnetic poles on the stator (winding type or permanent magnet type), the rotor has windings, after power, the rotor also forms a magnetic field (magnetic pole), there is an angle between the stator and the magnetic pole of the rotor, under the mutual attraction of the stator and rotor magnetic field (between the N pole and the S pole), it is the motor rotation. By changing the position of the brush, you can change the direction of the magnetic pole angle of the stator and rotor (assuming that the magnetic pole of the stator starts from the angle and the magnetic pole of the rotor is on the other side, and the direction of the magnetic pole of the rotor to the magnetic pole of the stator is the direction of rotation of the motor), so as to change the direction of rotation of the motor. Therefore, it has the characteristics of good heat dissipation effect and long service life.

2. Axial flow cooling fan: The blades of the axial flow cooling fan push the air to flow in the same direction as the shaft. The impeller and propeller of an axial fan are somewhat similar in that most of the airflow is parallel to the axis, in other words, along the axis.

Axial fans have the lowest power consumption when the inlet airflow is free air with zero static pressure, and when it is running, the power consumption will increase with the rise of the backpressure of the airflow. Axial fans are usually mounted in cabinets of electrical equipment and are sometimes integrated into motors.

3. Centrifugal cooling fan: When the centrifugal cooling fan is working, the blades push the air to flow in a direction perpendicular to the axis (i.e., radial), the air intake is along the axis, and the air outlet is perpendicular to the axis. In most cases, an axial fan is sufficient for cooling, however, sometimes a centrifugal fan is necessary if the airflow needs to be rotated 90 degrees or when a large air pressure is required.

Strictly speaking, fans are also centrifugal fans.

The most important fan for car heat dissipation is the intelligent heat dissipation type, as well as the heat dissipation type of battery starting, so when using it, it must be reasonably selected according to the actual situation.

What are the types of cooling fans in the 70? What does it do? There are two types of cooling fans in automobiles: air-cooled and water-cooled, and its role is to cool down the engine.

This cooling fan is the most dissipated by our wind power system, which is still a better way to dissipate heat.

Engine fans are generally divided into mechanical fans, and the other is electric fans The fan can blow the air in front of the radiator to the back of the radiator, thereby improving the cooling effect of the radiator.

A high-velocity airflow is generated to take away the heat of the coolant in the radiator and dissipate heat from the engine.

The performance of a car fan also directly affects the performance of the car. From this, we can see the importance of automotive cooling fans. Let's take a closer look at the features of a car cooling fan.

Automotive Cooling Fan Function Introduction: IntroductionAutomotive fan manufacturers manufacture automotive fans that are mainly used for blowing and cooling automobiles. Don't look at its simple purpose, but it works a lot.

In fact, the car generates a lot of heat throughout its travel. If the car fan blades are not used to cool it in time, it is likely to cause great damage to the engine and even directly lead to the scrapping of the engine. In this way, the role of the car fan is really great.

Introduction to the function of the car cooling fan: The car fan produced by the car fan manufacturer is composed of the car fan blade, the car fan belt and the motor. These three devices are relatively small, making them easy to carry and install.

The working principle is very simple, that is, when the motor of the car fan drives the belt, the car fan can work normally. The significance of a car fan is to effectively cool the car engine. Car fan manufacturers say that fan blades don't always work.

When the engine temperature rises to a certain temperature, the temperature sensor sends out an alarm, and the fan works automatically.

The working principle of the car cooling fan is as follows: 1. The high and low speed of the car fan is controlled by the thermal or attitude switch (F18), which has two gears and is installed on the water tank to detect the water temperature. It gives two signals to J293, and J293 conducts different open circuits to control the high and low speed of the electronic fan.

2. Turn on the air conditioner, and both fans should be turned. However, it should be noted that the air conditioner and the group electronic fan are two relatively independent systems, which are controlled by two computers, named J301 (air conditioner) and J293 (electronic fan) respectively. J301 just gives J293 a signal to force 2 electronic fans to start.

Other than that, there isn't much to do with it. 3. The car fan is installed behind the water tank (near the side of the engine compartment), and the air is pulled in from the front of the water tank when it is turned on; However, there are some models where the fan is installed in the front (outside) of the water tank, and the wind blows in the direction of the water tank when it is turned on. When the speed of the vehicle is fast, due to the air pressure difference between the front and rear of the vehicle, it is enough to play the role of the fan and maintain the water temperature to a certain extent, so the fan can not work at this time.