Research on Simulation Experiment Method of Piston Ring and Cylinder Liner Friction and Wearing

A fast simulation experiment method is proposed that can be used to evaluate the performance of piston ring and cylinder liner friction and wearing. A reciprocating test rig for simulating friction and wearing of piston ring and cylinder, a test equipment which measures experimental parameters such as press and rate and the experimental results such as force of frictional force and friction stroke lengths a computer data acquisition and analysis system are developed. The practical piston ring and liner were adopted as the experimental specimens to ensure that the simulation experiment is not only closer to actual conditions but also largely reduce the time for specimen preparation. The piston rings from 492 type engine with wear-resistant cost of Ti-TiN and their matched cylinder liners are used as the specimens for repetition experiment. The results indicate that the max relative error of wear quantity is less than 8.5% and the max relative error of frictional force is less than 2% when weight method is used for test.