How Does an Automotive Electric Cooling Fan Work?
1 Answers
Automotive electric cooling fan working principle: The system is controlled by a thermostat. When the coolant temperature rises to the upper limit, the thermostat activates the power supply, causing the fan to start operating. Once the temperature drops to the lower limit, the thermostat cuts off the power, and the fan stops. Air conditioning activation also controls the electric fan's operation. There are two main types: silicone oil clutch cooling fans, which utilize the thermal expansion properties of silicone oil to drive the fan rotation, and electromagnetic clutch cooling fans, which operate based on electromagnetic field engagement principles to rotate the fan. Typically, automotive fans are mounted behind the radiator, pulling air from the front when activated. However, some vehicle models position the fan in front of the radiator, pushing air toward it during operation.