Abstract
<jats:p>The reliability of modern automotive engines largely depends on the quality of the engine oil. Modern engine oils for the lubrication of engine parts are complex mixtures of hydrocarbons, their derivatives, and various additives or additives with unique functional properties. A special place among anti-wear and antifriction additives (additives) to oils, both abroad and in our country, is occupied by molybdenum-containing complex compounds and powders. Soluble additives and solid-phase additives have certain disadvantages, and comparative studies have been conducted to select the most effective composition and condition. A two-stage technology for the production of nanoscale molybdenum disulfide powder and a method for comparative tribological studies of an additive containing molybdenum disulfide compounds and a lubricant composition containing nanoscale molybdenum disulfide powder (NRDM) were proposed. The results of comparative studies have shown that a significant decrease in the amount of friction in the contact zone of the samples was recorded on the lubricating composition, which is a mixture of MS-20 oil with the addition of HPDM. Its value after 1 hour of testing was 2.0 times less than on MS-20 oil, and 1.6 times less than on a lubricant composition consisting of a mixture of MS-20 oil and Liqui Moly additive. To increase the anti-wear properties, it was proposed to additionally introduce a previously developed powdered additive "Cluster" into the lubricating composition consisting of a mixture of MS-20 oil with the addition of HPDM, which is a mixture of a nanodispersed powder of a brass alloy doped with sulfur and phosphorus, a certain amount of oleic acid and base oil. The results of its use showed a significant improvement in the anti-wear characteristics of the lubricant composition based on HPDM. The average amount of battery wear over 3 hours of research not only decreased compared to work on other experimental lubricating compositions, but showed a mass increment of 0.05 mg.</jats:p>