Abstract
For the description and wear prediction in tribicouplings there are theoretical formulae and also empirical models. Most of well-known regulations may be used only under specific conditions of contacting. The purpose of this work is the investigation of tribicoupling “piston guide – cylinder liner” in an internal combustion engine (ICE). In particular, for that there were carried out experimental investigations on a tribometer realizing a reciprocal motion of piston and cylinder liner samples. The results of experimental investigations were analyzed with the use of a wear model which is the most applicable for the description of this type of tribocouplings. This model is based on the combination of energetic theory and molecularmechanical method with a precise definition of friction surface topography parameters. Such a modified model of friction and wear allows combining the prognostication of a layer worn with fatigue theory that gives a possibility of its use as applied to the life analysis of any reciprocating tribosystem.
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