Truck Cooling Fan Blade 7700042375 For Renault Engine Fan plastic

The function of the engine cooling fan is to enhance the air velocity and flow through the diffuser to improve the heat dissipation effect of the radiator. The fan is an important component in the engine cooling system. Its performance not only directly affects the heat dissipation efficiency of the radiator, but also affects the normal use and reliability of the engine.

Many parts of a car need to dissipate heat during operation, so there are many places inside the car that need to be installed with fans, including clutch fans, electronically controlled fans, and general cooling fans.

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The control principle of automobile fan includes fan control device, thermal switch "only" control, water tank control, motor drive, fan control device, and sensor control.

Thermal switch "only" control: The high and low speed of the car fan is "only" controlled by a thermal switch. This switch has two levels and is installed on the water tank to detect the water temperature.

Water tank control: The car fan is installed behind the water tank, and when it is turned on, the wind is drawn in from the front of the water tank; however, there are some models of fans that are installed in the front of the water tank and blow the wind in the direction of the water tank when it is turned on.

Engine driven: Electric fan When the engine is at low temperature, the fan does not rotate. When the temperature rises, the fan rotates. It is driven by the electric motor.

Sensor control: The electronic fan is to control the engine water temperature not to be too high, the water temperature generally exceeds 90 degrees, the sensor is activated, the electronic fan is turned on, so that the water temperature is lowered, the temperature is lower in winter, the water temperature is also lower, the electronic fan is generally not turned on.

Fan control device: In order to reduce engine power loss and save fuel, mechanical fans often use fan control devices to control the engagement and separation of the cooling fan and the drive reel.