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缸套对活塞和活塞环的运转特性影响很大,因此不仅要求有良好的活塞和活塞环以及理想的润滑油,而且对于缸套的质量也相应提出了要求。 图1概括了影响发动机运转状态的缸套特性。 从图中可以看出,缸套的几何形状不应有偏差,在工作负荷下更不应该出现偏差;缸套材料所具有的显微组织、硬度和化学成分同样是影响发动机运转状态的重要因素,目前缸套的材料仍然采用片状石墨铸铁。
Cylinder liners have a great influence on the operating characteristics of pistons and piston rings, so not only are there good piston and piston rings and the ideal lubricant, but also the requirements for the quality of the liners. Figure 1 summarizes the cylinder liner characteristics that affect engine operating conditions. As can be seen from the figure, the geometric shape of the cylinder liner should not be deviated, even under the working load should not be deviated; cylinder material with the microstructure, hardness and chemical composition is also an important factor affecting engine operating conditions At present, the material of cylinder liner still uses flake graphite cast iron.