MERCEDES BENZ Actros Antos Arocs 5412001122 Truck Spares Parts

MERCEDES BENZ Actros Antos Arocs 5412001122 Truck Spares Parts

MERCEDES BENZ Truck Engine Fan 0002008622 5412001122 Actros/Antos/Arocs electronic fan clutch Engine Cooling System

The silicone oil fan clutch reduces the loss of engine horsepower and improves the efficiency of the car's cooling system. The silicone oil fan clutch is a liquid flow connection device, which uses the axially fixed fan blades of the water pump to provide power to provide air circulation to the radiator.

When the engine is under cold start or working under a small load, the temperature of the cooling water and the airflow passing through the radiator is not very high. At this time, the oil inlet will be effectively closed by the valve plate, and there is no silicone oil in the working chamber. Will be in a separated state. When the driving shaft rotates, only due to the friction between the sealing felt ring and the bearing, the fan will slip idly on the driving shaft along with the housing, and the speed is extremely low.

When the engine load is effectively increasing, the temperature of the coolant and the airflow passing through the radiator will also increase. At this time, the temperature sensor is heated and deformed to drive the valve plate shaft and valve plate to rotate. When the temperature of the airflow flowing through the temperature sensor exceeds 338K (65°C), the oil inlet hole is fully opened, and the silicone oil enters the working cavity from the oil reservoir. The silicone oil is very viscous, and the active board can use the viscosity of the silicone oil to drive the casing and the fan to rotate. At this time, the fan clutch is in the engaged state, and the fan speed increases rapidly.

When the engine load decreases and the temperature of the gas flowing through the temperature sensor is lower than 308K (35°C), the temperature sensor returns to its original state, the valve plate closes the oil inlet hole, and the oil in the working chamber continues to flow back to the oil reservoir from the oil return hole Cavity until it is empty. The fan clutch returns to the disconnected state.

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After the fan clutch is locked, the following results will be caused:

First, the fan continues to run at the maximum power, causing a waste of fuel.

Second, the accuracy of engine coolant temperature control becomes worse.

Third, the locking device of the fan clutch is limited in strength and cannot withstand the full speed of the fan for a long time