Fan Blade 2035608 7077114 for Scania Freight Car Engine system Fan

The function of the engine cooling fan is to enhance the air velocity and flow through the diffuser to improve the heat dissipation effect of the radiator. The fan is an important component in the engine cooling system. Its performance not only directly affects the heat dissipation efficiency of the radiator, but also affects the normal use and reliability of the engine.

Many parts of a car need to dissipate heat during operation, so there are many places inside the car that need to be installed with fans, including clutch fans, electronically controlled fans, and general cooling fans.

The fan is located between the radiator and the body, is installed on the same shaft as the water pump, and is driven by a pulley on the crankshaft. The fan and the pulley hub are connected by bolts, and the engine crankshaft pulley directly or indirectly drives the fan to rotate.
The tightness of each belt should be adjusted according to regulations. The tightness of the fan belt is too loose, causing the fan pulley speed to decrease, the heat dissipation of the water tank is weakened, the diesel engine working temperature is increased, and the generator output current is reduced or unstable, but the tightness of the fan belt is not as large as possible. The fan belt Too tight will cause excessive load on the bearing, increased wear, and increased power consumption. At the same time, it will also cause the water pump shaft to bend, the belt will elongate and deform, and its life will be shortened. Therefore, the fan belt should be kept tight and properly adjusted if necessary.

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There are two blowing directions for the cooling fan of the engine: blowing and suction. Which blowing method to choose depends on the layout of the engine cooling system. The layout of the engine cooling system needs to be determined according to the space of the engine compartment and the chassis structure of the vehicle body.