Гидравлика и инженерная гидрология. Рубрика в журнале - Строительство уникальных зданий и сооружений
Protective oil molecular film on metal surfaces: Method for determining quality
Статья научная
A method for assessing the quality of a protective oil film by determining the contact angle and oil absorption capacity of the surface is presented. This method allows determining the efficiency of using the proposed surfactant based on an organofluorine compound. The use of this substance increases the contact angle and oil absorption capacity of the surface, which can affect the quality of friction pairs. Collection, processing and analysis of the results of laboratory experiments and determination of the main properties of the treated surface allow us to speak about the high efficiency of the proposed composition. The optimal concentration of the substance in the reference oil and the holding time for the formation of a stable protective oil film were experimentally determined. In the future, it is planned to develop a method and conduct laboratory tests on friction machines using the proposed composition.
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Sulphur content in engine oil: Method for determining the amount
Статья научная
The object of the study is engine oil for internal combustion engines of agricultural machinery, with a focus on determining the content of sulphur and its compounds, such as sulphoxides and sulphides, which have a significant impact on the performance of oils. The research method involves the use of high precision titration techniques using specialised reagents and instruments to accurately measure sulphur concentrations. The obtained results demonstrate that the increased content of sulphur-containing compounds in motor oils leads to accelerated engine wear and increased negative impact on the environment. Application of the proposed methodology allows effective control of sulphur content, which contributes to optimisation of engine operation and reduction of machinery downtime. Thus, maintaining the optimal quality of engine oil is a key factor for increasing the service life of internal combustion engines and improving their efficiency in the agro-industrial complex.
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