Working principle of electronically controlled silicone oil clutch fan?

Working principle of electronically controlled silicone oil clutch fan: 1, working principle: silicone oil fan clutch, with silicone oil as medium, uses silicone oil shear adhesion to transmit torque. An oil storage cavity is arranged between the front cover of the fan clutch and the driven plate to store high-viscosity silicone oil;

2. The key sensing element is the spiral bimetal temperature sensor on the front cover, which senses heat and generates deformation of the control valve plate, thus controlling the silicone oil to enter the working chamber and join the drive shaft and the fan;

3. When the engine load increases and the coolant temperature rises, the high-temperature airflow blows on the bimetal temperature sensor, causing the bimetal to be deformed by heating, driving the driving pin of the valve plate and the control valve plate to deflect at an angle. When the air temperature exceeds a certain temperature, the oil inlet hole is opened, and the silicone oil in the oil storage cavity enters the working chamber through this hole. The torque on the driving disk is transmitted to the clutch housing through the shear stress of silicone oil, which drives the fan to rotate at high speed.

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