TECHNOLOGICAL METHODS FOR RESTORING THE CYLINDER LINER MIRROR

Abstract

The analysis of the internal combustion engine market, the growth of competition and continuously increasing environmental requirements show the need for continuous quality improvement and reduction of the production time of new engine designs, as well as cost reduction at all stages of the product life cycle through the use of innovative technologies that minimize the labor and material resources consumed. One of the urgent tasks in the field of piston engine engineering is the use of aluminum alloys in the manufacture of cylinder liners and linerless cylinder blocks (Research purpose) The research purpose is in studying the technological solutions for repairing the cylinder liner mirror of the internal combustion engine block. (Materials and methods) The article presents the ways to increase the wear resistance of the working surface of the cylinder, considers the concepts of improving the reliability of cylinder blocks made of aluminum alloys, notes the features of restoration and hardening of aluminum cylinder blocks. (Results and discussion) The article describes the ways to increase the wear resistance of rubbing surfaces. One of the promising ways of increasing the life of the cylinder–piston group of aluminum alloys is the micro-arc oxidation. Technological measures consist in the use of wear-resistant coatings, volumetric and surface alloying. Ninety percent of all ICE blocks use liners made of iron alloys or other wear-resistant materials. (Conclusions) The results of the study showed that there are currently no technological solutions and sets of equipment for repairing the cylinder liner mirror, regardless of the material and method of manufacturing the internal combustion engine block. The possibilities of using the micro-arc oxidation method to increase the reliability of parts of the cylinder- piston group of internal combustion engines are not sufficiently studied now.