FLUSHING THE LUBRICATION SYSTEM OF TRACTOR ENGINES WITH A COMPOSITION BASED ON USED ENGINE OIL

In lubricating engine oil and on engine parts, depending on the engine operating time, a significant amount of contaminants, resins, oxidation products accumulate, which are deposited in the oil channels of the lubrication system, on the pistons, under the oil scraper rings. Based on the parametric data, a theoretical dependence was constructed to assess the relationship between the characteristics of the oil, an expression was obtained that determines the relationship between compression and oil color in the process of flushing the lubrication system. The differential function of the efficiency of restoring the operational properties of the engine is presented. To solve the existing problem, studies were carried out to simulate the process of removing deposits from the lubrication system with flushing oil. It has been established that used engine oil purified with clarification can be used as the basis for flushing oil. The dependence of the change in the contamination of the surface of the oil pipeline and the content of insoluble sediment in the oil on the time of flushing the lubrication system with purified waste oil has been obtained. A decrease in the contamination of the surface of the oil pipeline from 10 to 7 points and an increase in the content of insoluble impurities in the oil from 0.01% to 0.20% were determined. It was found that the addition of diesel fuel to the purified waste oil in the amount of 3% by volume does not lead to a significant increase in the washing properties of the oil. Additional enrichment of the cleaning mixture, consisting of purified used engine oil, 3% diesel fuel and potassium isopropoxide 3% wt, 3% wt dimethyl sulfoxide, reduces the point of contamination of the oil pipeline surface from 10 to 1 point. It has been established that the introduction of the entire complex of additives into the oil leads to an increase in the content of contamination in the developed oil composition after 40 minutes of washing from 0.01% to 0.45%.