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Fan Clutch
A fan clutch controls the rotation of a fan because it reacts to the temperature of air which passes through the radiator and has the role to maintain the heat balance of an engine cooling system at the best condition by changing the amount of air flow. It is designed to respond quickly to temperature that changes every second, such as high speed driving and traffic congestion, and to change a fan speed continuously. It reduces a fanning noise while it suppresses power and decreases mpg, and it contributes to having a comfortable driving environment.
STRUCTURE

The rotation force of the fan is transmitted through the silicone oil inside the fan clutch driven by the belt and the rotation of the engine which is the principal source of power. This silicone oil has a highly stable density.
By a large amount of silicone oil in the working chamber the fan speed increases when the atmosphere's temperature is high. Conversely, when the temperature is low, a small amount of silicone oil is regulated into the chamber and the fan speed slows down. Tt has a structure of adjusting heat balance of engine.












