GWWCJH. APPLYING SERPENTINE-BASED FRICTION GEOMODIFIERS USING THE COMPRESSION-VACUUM METHOD ON THE EXAMPLE OF AN INTERNAL COMBUSTION ENGINE

Abstract

During the operation of transport and technological machines, many interfaces are subject to wear, in particular, the cylinder-piston group of internal combustion engines. To restore them, different types of repairs are used, one of which is the use of a mixture of geoactivators to obtain modified metals and metal-ceramic surfaces. This method not only restores friction pairs, but also increases their service life. (Research purpose) The research purpose is evaluating the quality of applying of serpentine-based friction geomodifiers on the example of internal combustion engines using the compression-vacuum method. (Materials and methods) One of the ways to restore fast-wearing friction surfaces is a technology based on a repair and restoration composition. To compare the initial state of the interface and after its restoration, it is necessary to use a simple, but at the same time effective method. The compression-vacuum method was considered as such a method. It allows the most accurate assessment of the quality of applying of serpentine-based friction geomodifiers in internal combustion engines. (Results and discussion) During the twenty-year period of using the compression-vacuum method on the basis of the AGC-2 and AGC-3 devices, it was possible to collect large statistics on the practical application of the presented equipment for gasoline engines and diesels in the conditions of service stations, car service stations and repair shops. (Conclusions) The compression-vacuum method as a tool for evaluating the effectiveness of the friction geomodifiers under consideration has shown that for assessing the state of the cylinder-piston group, this method serves as almost the only differential method that allows the most complete assessment of the effect of the technology.