Development and research of new technology for cleaning diesel lubrication system
2020
Ostrikov, V., Russian Academy of Agricultural Sciences, Tambov (Russian Federation). State Scientific Inst. All-Russia Research Inst. on Use of Technics and Mineral Oil | Balabanov, V., Russian State Agrarian Univ. − Moscow Timiryazev Agricultural Academy (Russian Federation) | Safonov, V., Saratov State Agrarian Univ. named after N.I. Vavilov (Russian Federation) | Ishchenko, S., Primorsky State Agricultural Academy, Ussuriysk, Primorsky Krai (Russian Federation)
The refusal to carry out a washing operation of the lubrication system from pollution before replacing the used oil with fresh oil has a number of objective and subjective reasons. First of all, it is the high price of flushing oils, insufficient washing properties for flushing lubricating systems of diesel engines. As the result of the studies, it was found that flushing of the lubrication system and removal of contaminants from the oil channels can be carried out with used motor oil without draining it from the engine crankcase. It was determined that introduction of ammonium hydroxide into the used engine oil in a mixture with carbamide and subsequent engine operation at speeds of 1500−1600 rpm allows removing almost all types of contaminants from the oil. According to the basic physical and chemical characteristics, the oil purified in the engine meets the requirements for the base oils used in the production of flushing oils. In the process of cleaning used oil, partial cleaning of the engine oil channels is already taking place. At the next stage, additives of dimethyl sulfoxide, potassium isopropylate and diesel fuel are added to the cleaned oil in the crankcase. It was determined that the subsequent start of the engine and its idling with variable speeds for 30 to 40 minutes allow increasing compression in the cylinders, reducing the fuel consumption, and increasing the oil pressure in the lubrication system. As a result of subsequent operation of the engine after washing it with the proposed technological process and the composition of detergent additives, the service life of freshly refilled oil is increased.
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