... Licensed re-use rights only Cylinder liner piston ring Running-in parameters Chaotic and fractal Characteristic parameters Phase trajectory As core components of internal combustion engines, cylinder liner piston rings (CLPRs) is widely used in automobile engines, engineering machinery...

... collected and processed using data acquisition instrument. The entropy characteristic parameters of 3D vibrational acceleration were extracted based on wavelet packet decomposition method. The end-face topography was measured with ST400 three-dimensional noncontact surface topography instrument. Findings...