Abstract:

In order to explore the microtexture that is more conducive to improving the performance of the piston ring-cylinder liner friction pair of an automobile engine, taking an engine piston ring-cylinder liner friction pair as a prototype. Central composite design (CCD) and response surface optimization theory are comprehensively used, and the CFD method is used to study the influence of characteristic parameters of asymmetrical parabolic micro texture, having elliptical gap on the friction coefficient and bearing capacity of the piston ring-cylinder liner friction pair. Establishment of corresponding mathematical model, and use the whale optimization algorithm to carry out multi-objective optimization design of the micro texture parameters. Implementation of simulation analysis, compare with the prototype friction pair without microstructure, from which to evaluate the load capacity and coefficient of friction of the piston ring-cylinder liner friction pair.