Substantiation of diagnostic parameters for determining the technical condition of transmission assemblies in trucks

Determining the rational composition of tribologically active additive to oil to improve characteristics of tribosystems

“…Responses or resulting features during the experiment were: Y1 -magnitude of wear (mm) → min; Y2 -critical load (N) →max; Y3 -welding load (N) →max. Table 1 Formation of factors and their levels for the experiment The preliminary choice of factors' levels was made based on the formalization of a priori information of the series of experiments [1,2,6,23]. The values of the lower factor were determined according to their impact on the corresponding response function or the possibility of manifestation of the negative processes in the junction during of the friction process.…”

“…In the general approach, all the methods for increasing wear resistance of mated parts of transport machines as the simplest tribosystems are divided into three main groups: structural, technological and operational [1]. That is why it is desirable to focus mainly on the relations between operatio nal and technological group of oils from the tribotechnolo gical point of view, as well as on assessment of the working additives.…”

“…It was not found in the work if this process flows with participation of the elements of a tribologically active additive or synthetic additive based on surfactants. The formation of these abrasive particles is possible due to clustering wear particles and paint-and-varnish inclusions in the working oil, which in turn is unacceptable during the operation of transport machines [1]. The formation of wear resistant surface layers with favorable rheological properties is carried out to reduce the internal stressed-strained state of machine parts.…”

“…At present, the characteristics of the tribosystems for transport machines are enhanced by selecting wear-resistant structural materials, choosing oil for them and creating the conditions for liquid lubrication of mated parts [1]. More intense studies in this direction are carried out and significant progress has been made in designing tribojunctions of parts.…”

Studying the tribological properties of mated materials C61900 - A48-25BC1.25BNo. 25 in composite oils containing geomodifiers

“…Increased requirements for the efficiency of machines, with a high level of reliability and limited financial costs for their operation require that tribological research should focus on searching for more effective new ways to increase wear resistance of different types of mated parts. The study of the technical condition of oils, which operate in power units of transport machines, showed that there is no full compliance with the manufacturer's stated norms of the run [1]. The processes of rapid aging of working oil are identified by a significant contact temperature that leads to its oxidation [2].…”