Criteria for assessing the harshness of the operating conditions of the lubricant in the engine

Abstract

EN: Engine oil is an integral element of the engine and as a result determines the reliability of its operation. The influence of lubricant on the engine is ambiguous and very significant. Lubricant should provide liquid friction under normal operating conditions, and in transient conditions – limit friction and minimal possible wear. At the same time, the components of the lubricant, interacting with the engine parts and forming protective films, protect the parts from corrosion, modify the friction surfaces, have a preventive effect on deposits, and neutralize acidic products. At the same time, the aging of motor oil results in such harmful phenomena as wear, soot and varnish formation, corrosion of parts, formation of low-temperature deposits and foam. In its turn, the type of engine, its structure, level of forcing, thermal stress, technical condition, structural features and parameters of lubricants, operating conditions, fuel quality affect the operating conditions and intensity of lubricant aging. It was established that in engines with almost the same parameters, the intensity of aging of the lubricant varies several times.