Fan clutch 1204470 1204471 For DAF Truck Engine Fan Heat dissipation

Fan clutch 1204470 1204471 For DAF Truck Engine Fan Heat dissipation

Silicon oil visco Truck fan clutch replaces 1204470 1204471 for DAF European truck Engine Cooling Part 

The silicone oil fan clutch uses silicone oil as the medium and uses the shear viscosity of the silicone oil to transmit torque. The speed of the fan is designed to ensure that the engine does not overheat when the operating conditions are the worst. Therefore, during the normal driving of the vehicle, the speed of the fan should be controlled within an appropriate range, so as to reduce noise and improve engine economy. . For an engine-driven fan, a fan clutch is usually used to control its speed. The inside of the clutch is sealed with viscous fluid (silicone oil), and torque is transmitted by its shear viscosity. A bimetallic plate is installed in front of the fan to sense the temperature of the air passing through the radiator, thereby controlling the amount of silicone oil in the fan working chamber, and only when necessary, can torque be transmitted to make the fan rotate. In the initial stage, only the switch type silicone oil fan clutch that cuts off and turns on the rotational driving force at high temperature and low temperature. As the vehicle's requirements for air volume and noise characteristics change, a more precise temperature-speed five-level control of involute type silicone oil The fan clutch is the future development direction.

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