Experimental Research on Cylinder Liner and Piston Ring Wear Condition in Vehicle Engine

In order to realize the wear failure analysis and simulation calculation of vehicle engine cylinder liner and piston ring,taking the cylinder liner and piston ring friction pair as the research object,the wear samples with the same cylinder liner and piston ring material were made,and 8 groups of sample wear experiments with different pressures and velocities that simulated the cylinder liner wear condition near TDC were designed based on the Latin Super Set.According to the wear data,the wear mass and wear rate of cylinder liner sample were analyzed.The wear surface morphology of cylinder liner sample in different wear stages were further researched through the sample surface SEM.With the method of response surface fitting,the formula of K coefficient in Archard adhesive wear model under different conditions were established,which brought the reference for the wear simulation calculation of engine cylinder liner and piston ring.