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List of the catalog of this article:

• 1,Trade data for route profitability When does the car cooling fan turn???
• 2, Engine cooling fan stepless control principle
• 3, What's wrong with the loud noise of the engine cooling fan
• 4, Features of automobile engine cooling fan control switch
• 5, What is the function of the car cooling fan?
• 6, Automotive cooling fan working positionPlace and its principle

When does the car cooling fan turn???

When the coolant in the water tank reaches a certain temperature, the cooling fan will rotate. But there is an exception, that is, when the air conditioner is turned on, the condenser fan and the water tank fan of the air conditioner of the general car are the same. When turning on the air conditioner, the air conditioner condenser needs to dissipate heat. At this time, regardless of the temperature of the water tank, the fan will start.

The cooling fan in the engine compartment mainly works when the engine coolant is high and the air conditioner is turned on. If the water temperature does not exceed 90 degrees and the air conditioner is not turned on, it is normal for the fan not to turn. But if the water tank is turned on and the fan has not been rotated, there may be a problem with the thermostat and relay, or the fan itself may be faulty.

Whether the car cooling fan starts to rotate depends on the coolant temperature and has nothing to do with time. When the coolant temperature reaches 98℃, the water tank fan will turn on automatically. The fan of the car water tank is turned on automatically and cannot be controlled manually. It will not start at low temperatures. It is divided into two speed gears at medium and high temperatures.

Car radiator fans generally start to rotate when the temperature is about 98°. The function of the car cooling system is to keep the car within the appropriate temperature range under all working conditions. The correct way to heat the car is to start the engine and then hang the gear, which can increase the engine load and make the engine warm up faster.

The cooling fan works to decide when to rotate according to the water temperature of the antifreeze. Generally, when the water temperature reaches about 108 degrees, coldHowever, the fan began to work at low speed, and the water temperature reached about 118 degrees, and the cooling fan began to work at high speed. Therefore, the cooling fan starts to rotate after the vehicle starts.

Engine cooling fan stepless control principle

cooling fan stepless control principle cooling wind The fan stepless control system is composed of sensors, control units and actuators.

The working principle of the new engine intelligent cooling system ATS When the vehicle starts, the temperature sensor included in the ATS engine intelligent cooling system will automatically detect the water circulation temperature of the engine and transmit it to the electronic cooling fan controller ECU in real time.

The electric cooling fan system is generally composed of electric cooling fan temperature sensor fan motor and motor switch control. The electric motor oil is installed on the radiator for thermal switch control, and there are two gears for low-speed use at the waste point. High-speed use requires cooling automatic action.

The fan circuit is connected through the fan relay, and the fan motor is started. When the water tank temperature sensor detects that the water tank temperature is below the threshold, the fan relay is separated and the fan motor stops working. The factor related to the operation of the fan is the temperature of the water tank, and the temperature of the water tank is not directly related to the water temperature of the engine.

What's wrong with the loud noise of the engine cooling fan

1. Reasons for the loud noise of the car engine: insufficient oil or aging, piston ring wear, bearing wear, exhaust pipe problem, fan noise. Insufficient oil or aging. Oil plays an important role in lubricating and cooling the engine. If the oil is insufficient or aging, it will cause increased engine friction, resulting in noise.

2. Loose or worn fan drive belt: Loose or worn fan drive belt may cause the fan to buzz. Fan motor failure: The fan motor may fail due to damage or aging, causing the fan to make a buzzing sound.

3. This is a normal phenomenon. When the temperature of the engine coolant rises, the sound of the cooling fan will become louder, because the speed increases.After turning on the air conditioner of the car in summer, the sound of the fan will also become louder, because the condenser needs to dissipate heat at this time. At the front of the car, there are condensers, water tanks, etc.

4. What is the reason for the loud noise of the car fan? There are 10 reasons for the high noise of the car fan and the solution: the leaves of the exhaust fan in the air conditioner are deformed; the solution: change the exhaust fan; the motor of the exhaust fan in the air conditioner is broken; the solution: change the exhaust fan; there is more dirt in the air conditioner ; Solution: Clean the air conditioner.

5. It is normal for the engine cooling fan to be loud. After the temperature of the engine antifreeze rises, the sound of the cooling fan will become louder due to the increase in speed. After turning on the air conditioner of the car on a hot day, the sound of the fan will also become louder, because the condenser needs to dissipate heat at this time. At the front of the car, there are condensers, water tanks, etc.

6. In addition, if the sound is loud, it depends on what kind of sound it is. If it is very soft and uniform, don't worry. If it is big and noisy, check if there is any problem with the fan blades. Frequent start-up mainly depends on the road conditions - it is normal to start frequently in urban areas.

Characteristics of automobile engine cooling fan control switch

1. Cooling fan switch, characterized by stepless speed change, intelligent temperature control, low noise. According to the relevant public information of the query, the cooling fan is a device that uses the electric motor to drive the fan blade to rotate to accelerate the air flow and then dissipate the target object. It is characterized by stepless speed change, intelligent temperature control and low noise.

2. The electronic fan is to control the water temperature of the engine not too high. It is composed of sensors, electronic fans, chips, etc. The water temperature generally exceeds 90 degrees. The sensor moves, and the electronic fan is turned on to lower the water temperature. In winter, the temperature is low, and the water temperature is also low. The electronic fan generally does not turn on to protect the engine from Work in too cold and overheated.

3. The temperature control switch controls the rotation of the fan. When the water temperature is about 88 degrees, the temperature control switch controls the fan base to rotate more than 100 degrees. The temperature control switch is generally installed on the water tank or where the water pipe reaches the engine cylinder head. There are three and two wires, depending on the model.

4. The function of car fan control is to reduce the heat in the cooling system. The cooling system is usually installed in the condenser and radiator in front of the front of the car.The vehicle will generate too much heat when in use. If it is not appropriate to take away heat only by the wind speed flowing through the vehicle when driving, it will cause the engine to overheat.

5. The function of car fan control is to reduce the heat in the cooling system. The cooling system is generally installed in front of the front of the car, at the condenser and radiator. The vehicle will generate a lot of heat during use. It is not appropriate to take away heat only by the wind speed flowing through the vehicle, which will cause the engine to overheat. Therefore, it is necessary to use a fan to help cool down.

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-cooled system; the cooling system with coolant as the cooling medium is called the water-cooled system.

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.

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.

Introduction to the function of automobile cooling fan: The function is mainly used for engine heat dissipation and coolant heat dissipation to ensure that the engine does not cause high temperature and failure.

The car engine is inModerate cooling must be obtained in a high-temperature working environment to keep it working at a suitable temperature to meet the requirements of the engine's good working performance, durability and exhaust emissions. The engine cooling system plays a key role here. It mainly includes cooling fans, water tanks, thermosulators and other components.

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.

The working position and its principle of the automobile cooling fan

1. [The working principle of the automobile electronic fan] The automobile 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.

2. The working principle of the cooling system is to circulate the liquid through the pipes and passages in the engine. When the liquid flows through the high-temperature engine, it absorbs heat, thus reducing the temperature of the engine. After the liquid flows through the engine, it flows to the heat exchanger (or radiator), and the heat in the liquid is released into the air through the heat exchanger.

3. One is the cooling fan of the silicone oil clutch, which uses the thermal expansion characteristics of silicone oil to drive its rotation; the cooling fan of the electromagnetic clutch is driven by the principle of electromagnetic field attraction. The main advantage is to drive the fan only when the engine needs to cool down to reduce the energy loss of the engine as much as possible. The layout of the fan in the engine compartment. The car fan is installed behind the water tank.

4. Introduction to the working principle of the radiator fan The working principle of the radiator is heat transfer. The principle of the cooling fan is to increase the air circulation of the heating software and take away the heat through the continuous circulation of air. In fact, it is all heat transfer. Convert high temperature into low temperature.

5. The following is the working principle of the car cooling system. The automobile engine cooling system is a forced circulating water cooling system. That is to say, the pump is used to increase the pressure of the coolant to force the coolant to circulate in the engine.