ОЧИСТКА СИСТЕМЫ СМАЗКИ ДВИГАТЕЛЕЙ ТРАКТОРОВ

Abstract

As a result of the analysis of the state of the issue of increasing the efficiency of the use of machinery and extending the service life in agricultural enterprises, it was determined that the refusal of the operation of flushing the lubrication system after replacing the engine oil that has expired reduces the operational characteristics of diesel engines of tractors, the service life of freshly refilled oil decreases. It was established in the course of modeling the process of flushing oil channels that commercial oil M10G2 does not fully ensure the removal of contaminants from the system compared to special flushing oils. Thus, as a result of preliminary experimental studies, it was found that at a pressure of 4 kg / cm2, the content of insoluble precipitate in M-10G2 oil decreases by 0.1-0.2%. As the pressure increases to 8 kg / cm2, these indicators improve. One of the tasks of increasing the efficiency of flushing the lubrication system is to reduce the cost of improving this operation. In this regard, it was decided to use the engine oil that has been used for its life as a washing oil. In laboratory conditions, the possibility of removing contamination from the waste oil was considered. For these purposes, coagulants were introduced into the heated oil and an oil purification operation was carried out in a laboratory centrifuge. After that, the washing properties of the M-10G2 oil of the Volga brand washing oil and purified waste oil were evaluated, which allowed to establish sufficiently high washing properties of commercial oil and purified used engine oil. The possibility of cleaning the lubrication system with used engine oil without draining it from the engine crankcase is considered. It was found that the introduction of a 2% mass solution of urea in ammonium hydroxide into the crankcase of the engine makes it possible to enlarge the contamination particles with their subsequent removal by a centrifuge built into the lubrication system. The thickness of the sediment layer on the walls of the centrifuge for 30 minutes of engine operation on oil with additives was 20 mm, while for a period of 200 hours it was 15 minutes. The color of the oil in CST units has changed from 7 to 3.5.