How to understand re-export regulations

List of the catalog of this article:

• 1, What's wrong with the car fan keeps turning
• 2, Where is the car fan switch
• 3, What is the function of the car cooling fan?
• 4
   、 How many control principles are there for car fans?

What's wrong with the car fan keeps turning

[Pacific Automobile Network] It may be the reason for the virtual connection of the circuit. You can try to unplug the wiring harness of the fan and cut off the power separately. In addition, in this case, the water temperature sensor may be damaged or the fan relay contact is stuck. Just go to the repair shop to replace a new one.

If the car has been completely cooled, if it is still turning, it may be a failure of the cooling fan's assembly or the cooling fan's line.

The reason why the car cooling fan keeps turning is as follows: the water temperature in the water tank drops slowly, and the water temperature has not dropped when the engine is just turned off. At this time, the cooling fan will still stop working for a period of time.

This may be caused by turning on the air conditioner or damage to the water temperature sensor. If the water temperature sensor is damaged, a new water temperature sensor needs to be replaced. It is normal to turn on the air conditioner fan. The condenser of the car air conditioner is in front of the water tank. After turning on the air conditioner, the fan needs to cool the condenser, so the fan will rotate.

The reason why the car fan keeps turning is that the car fan has the effect of dissipating heat, whenIf the temperature of the coolant is too high after parking, the driving computer will automatically calculate the speed and time of the fan. The higher the temperature, the longer the fan will rotate, thus protecting the engine.

Where is the car fan switch

1. The fan switch of the car is in the central control position of the vehicle, and there is a fan icon. Click to choose the appropriate air volume according to your needs.

2. The temperature control switch of the car is in the central control position of the vehicle. Take Passat as an example, the temperature control switch can be found in the following ways. First of all, pull the doorknob of the vehicle cockpit outside the car to enter the vehicle cockpit. After entering the car, you can find the temperature control system of the vehicle in the central control diagram of the vehicle.

3. In the central control position of the vehicle.Dongfeng Fengfeng is a passenger car brand under the Dongfeng Automobile brand. The fan switch of the Dongfeng Fengfeng 330 water tank is in the central control position of the vehicle. There is a fan icon. Click to choose the appropriate air volume according to your own needs.

4. The BYD s6 fan switch is on the air conditioner control panel. The AC button is the fan switch. Press the AC button to turn on the fan. Stwis the temperature control button to the blue side to produce cold air, adjust the wind speed, and then set the suitable temperature.

5. The temperature control switch of the engine fan of SAIC GM Buick Kaiyue is located under the hood, in the upper left corner of the engine. The specific operation steps to find it are as follows: open the driver's door of SAIC GM Buick Kaiyue. Pull the hood switch on the left side of the driver's leg of SAIC GM Buick Verna.

What is the function of the car cooling fan?

The function of the automobile cooling system is to dissipate part of the heat absorbed by the heated parts in time to ensure that the engine works at the most suitable temperature. The cooling system of the engine is divided into air-cooled and water-cooled. The cooling system with air as the cooling medium is called the air cooling system;A water-cooled system with coolant as the cooling medium.

The fan is used to dissipate the water in the heat sink when the engine is high temperature. The high-temperature water flows into the water tank, passes through the radiator to dissipate heat, and the low-temperature water flows out.

Hello! The fan in the hood you mentioned is the fan of the car cooling system. Modern civilian vehicles basically adopt liquid cooling systems. That is, liquid is used as the engine cooling medium. The principle and composition of the whole cooling system are very similar to the water-cooled chassis of the computer.

One is a water tank cooling fan, and the other is an air conditioning cooling fan. The car radiator assembly consists of water chamber, water chamber and radiator core. It is an indispensable and important component in the cooling system of automobile water-cooled engines, and is developing in the direction of light, high efficiency and economy. The structure of the car radiator is also constantly adapting to the new development.

How many control principles are there for car fans?

There are two main common fan control modes, which are simple relay mode control and pulse FM output control. The simple relay mode control is shown in the figure below, including J1 low-speed control relay, J2 high-speed control relay and F18 thermal switch, which are installed on the radiator.

The working principle of the car fan is as follows: the high and low speed of the car fan is "uniquely" controlled by the heat-sensitive switch (F18). This switch has two gears, which are installed on the water tank to detect the water temperature; it sends the two-speed signal to J293, and J293 then conducts different openings to control the high and low speed of the electronic fan. Turn on the air conditioner, and both fans should be turned.

[Working principle of automotive electronic fan] Automotive electronic fan is controlled by the engine coolant temperature switch. Usually there are two 90 speeds, one 95 low speed and two high speeds. In addition, turning on the air conditioner will also control the operation of the electronic fan.

specifically including: one is a silicone oil clutch cooling fan, which relies on the heat expansion characteristics of silicone oil to drive the fan to rotate; an electromagnetic clutch cooling fan, which drives the fan by the principle of electromagnetic field absorption. The main advantage is that the fan is driven only when the engine needs to cool down, so as to minimize the energy loss of the engine.

The working principle of the automotive electronic fan is to provide the computer board of the vehicle and the engine through the temperature control switch or the relevant signal transmission of the water temperature sensor. After reaching a certain temperature, the engine computer gives the relevant relay signal, and then the relay controls the fan, low-speed and high-speed operation.