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Engine parts are Free sports events uefa champions league app androidan important part of the engine. The role of key parts is very important to ensure the normal operation of the engine and extend the service life. In the process of maintenance and upkeep of parts, it is very important for the improvement and maintenance of engine performance. This article elaborates on the role and maintenance of key parts of engine spare parts. I. The piston piston is a part with a lifting movement inside the engine. Its main function is to compress the mixture of fuel and air and transfer it to the valve in the cylinder and provide pressure so that the engine can work normally.The piston is generally made of aluminum alloy, and its surface is covered with a coating to reduce friction and wear. For the maintenance and upkeep of the piston, it should be checked, cleaned and replaced regularly according to the usage to ensure that it is in good condition during operation. II. The cylinder liner is the sleeve in the engine that prevents the piston from slipping out of the cylinder, and its position is between the piston and the cylinder. Cylinder liners are generally manufactured by casting or rolling process, which has good corrosion resistance and wear resistance. The maintenance and upkeep of the cylinder liner should be cleaned and replaced regularly according to the usage to ensure the stability of its working condition. III. The crankshaft is one of the main components in the engine that undertakes rotation and transmission of power. Its function is to convert chemical energy into mechanical energy through connecting rods and pistons and drive the car to run. The crankshaft is generally made of steel and surface hardened.To maintain and maintain the crankshaft, it is necessary to maintain the smoothness of the engine oil line, as well as regularly replace the oil and use high-quality oil. IV. The connecting rod is one of the main parts of the engine that transmits the piston force to the crankshaft. Its function is to make the rotation of the engine smoother and smoother. Generally speaking, the material of the connecting rod is cast steel or aluminum, and the surface is treated to prevent fatigue cracking. When maintaining and maintaining connecting rods, it is necessary to keep the engine running normally, clean and check regularly, and replace fatigued and damaged parts. V. The valve is the intake and exhaust pipe of the engine. Its function is to control the flow and inflow of airflow. Generally, the valve is used for high-compression ratio and high-displacement engines, which need to be checked and cleaned regularly to ensure that they are clean and undamaged. VI. Piston ring is an important part of the engine.The function of the sealing device is to prevent fuel and compressed air from leaking from the side of the piston, and to prevent oil from entering and burning. According to the actual use and maintenance of the engine, it is very important to check and replace the piston ring regularly. In summary, engine parts are very important components of the engine, and the role of key parts is very important, which is crucial to ensure the normal operation of the engine and extend its service life. In the process of maintenance and upkeep of parts, it is very important for the improvement and maintenance of engine performance. Therefore, for the maintenance and upkeep of engine spare parts, we need to regularly check and replace damaged and worn parts, and take effective maintenance and upkeep. Only in this way can we ensure the normal operation of the engine and achieve its best life and performance.

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