Maintenance method of piston ring

The engine piston ring is one of the quick-wearing parts of automobiles. It is necessary to know that the quality of the piston ring directly affects the performance of the engine. Therefore, one must not neglect it and must take good care of the piston ring. The maximum wear of the sliding surface of the piston ring often occurs at the dead center of the cylinder, because it is affected by high-temperature gas, which damages the oil film and causes conditions that are easy to melt, thus accelerating the wear of the piston ring. The so-called normal wear actually includes slight melt wear and abrasive wear. Qingdao Shengtuo car maintenance tells you that the wear of the sliding surface of each ring is different. The first air ring has the largest wear, the second ring is about half of the first one, and the oil ring has the smallest wear, the reason for this phenomenon is due to the influence of the distribution of lubricating oil on the cylinder surface and the adsorption of impurities. The wear of the upper and lower end faces of the piston ring is mainly due to the mechanical grinding formed by the hard residue in the engine oil and the dust particles mixed in from the atmosphere on the upper and lower end faces, which is essentially abrasive wear. However, when the abnormal thermal deformation of the piston and the lateral clearance of the ring groove change, melting wear may also occur. The type of the engine and the use conditions are different, and the wear of the piston ring is also very different. Therefore, the problem cannot be solved by improving the structure and material of the piston ring itself, the piston ring can be maintained from the following aspects: 1. Structural State and surface treatment; 2. Heating during assembly and operation will cause deformation of cylinder liner and piston; 3. Materials and good matching of piston ring and cylinder liner; 4. Selection of lubricating oil and additives.

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