Structured Surfaces used for Improving Tribological Behaviour for the Piston – Ring Cylinder – Liner Friction Couples in Internal Combustion Engines

Abstract

Structured surfaces means the achievement of a rate, or controlled micro-geometry for one or both friction surfaces. These surface profiles are used to guarantee lubrication functions of transport, hoarding and spread of the oil and to collect the wear products for maintaining the uprightness of the friction couple surfaces. The present article will present the use of these surfaces for improving tribological properties of the piston-ring cylinder liner friction couples in combustion engines. It will be presented the improvement of the friction and wear properties and the evolution of the combustion engines properties by the use of these kinds of surfaces.