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以船舶柴油机的典型摩擦学系统缸套-活塞环为对象,对各个缸套进行表面处理(如表面凹坑、凹槽等),然后在专用的摩擦磨损试验机上对缸套-活塞环摩擦副进行模拟试验,监测磨损过程中的振动信号,对比研究装配普通缸套和经过各种表面处理的缸套工况下柴油机机身表面振动信号,利用小波包的分解与重构,获取了高频信号分量并提取其能量特征。通过比较不同表面处理缸套的特征值得出不同表面处理的缸套对柴油机振动的影响。
In the typical tribological system of marine diesel engine, the cylinder liner-piston ring is used as the object, surface treatment of each cylinder liner (such as surface pits, grooves, etc.), and then on the special friction and wear testing machine cylinder liner - piston ring friction pair The vibration signals during the wear process were monitored and the vibration signals of the diesel engine fuselage surface were compared and analyzed with the conventional cylinder liner and cylinder liner with various surface treatments. By using the wavelet packet decomposition and reconstruction, the high frequency Signal components and extract their energy characteristics. By comparing the characteristic values of different surface treatment cylinder liner, the influence of different surface treatment cylinder liner on the vibration of diesel engine is obtained.