Analysis of the Operational Wear of the Combustion Engine Piston Pin

This article presents the results of research into causes wear piston pin mounted in bosses by means a hinge joint and connecting rod small end thermocompression bond. Changes geometry pin-top surface structure, which are caused mutual influence mating surfaces variable lubrication conditions, presented. The progress scuffing as result insufficient elements or oil film breaking is demonstrated. state destruction was confirmed roughness measurements showing formation build-ups. loss bond surface, penetration sintered engine fractions containing biofuel additive components spent improver packages, noted. progressing forms cause failures due to movement towards cylinder wall, boss breakage piston.