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The belt pulley in the engine plays a vital role. Their main task is to transmit power and convert the engine's rotational motion into the required linear motion. The following are the core functions of the pulley:

Power transmission: The belt pulley can effectively transmit the power generated by the engine to devices such as generators, steering pumps, water pumps, and air conditioning compressors to ensure the smooth operation of these devices.

Speed regulation: In certain scenarios, the pulley needs to slow down the high-speed engine power to adapt to those devices that require low-speed drive. This is usually achieved by configuring different numbers of teeth on the pulley.

Balance maintenance: The belt pulley plays an important role in maintaining the balance of the engine. It can prevent engine shaking caused by excessive local load. By scientifically configuring the size and number of pulleys, the engine can be guaranteed to run smoothly under various working conditions.

There are five pulleys on the engine, namely the crankshaft pulley, water pump pulley, generator pulley, compressor pulley, and tensioner for adjusting the belt.

These belt pulleys play their own unique roles in the engine. The crankshaft pulley is the source of power, driving the belt to rotate. The water pump pulley circulates the cooling water inside the engine by rotating to ensure the normal operation of the engine. The generator pulley generates electricity by rotating to provide additional power for the vehicle. In addition, the compressor pulley is responsible for driving the compressor to provide low-temperature refrigerant to the vehicle's air conditioning system to regulate the temperature inside the vehicle. The tensioner ensures that the belt works under appropriate tension.

As a rubber product, the belt of the automobile engine needs to be replaced regularly. As the use time increases, the belt is prone to wear or aging. According to the recommendations of the automobile manufacturer, the belt should be replaced when the driving distance reaches 60,000 to 100,000 kilometers. Regular maintenance and replacement of the engine belt and its related accessories can ensure the smooth operation of the engine and avoid failures caused by belt wear or breakage.

The engine belt pulley plays an indispensable role in power transmission and stable engine operation.