Authors: A.A. Ryabinin, N.N. Lysyannikova, M.A. Plakhotnikova

Title of the article: Method for determining the energy bond of the products of the temperature resistance of lubricants

Year: 2022, Issue: 3, Pages: 32-40

Branch of knowledge: 05.02.11 Methods of control and diagnostics in mechanical engineering

Index UDK: 61.51:52.45.19

DOI: 10.26730/1999-4125-2022-3-32-40

Abstract: Of scientific and practical importance are studies of the relationship between the products of thermal degradation and evaporation of motor oils of various basic bases, taking into account the thermal energy absorbed by these products for the processes occurring during the oxidation of the lubricant, anti-wear properties and service life. For this purpose, a set of instruments was used, including: a device for testing the thermal stability of oils in the temperature range from 160 to 300 ° C; photometric device for direct photometry; device for determining thermal-oxidative stability; low-volume viscosimeter; device for testing rubbing materials; digital microscope; laboratory balances that make it possible to determine optical properties, kinematic viscosity, volatility and anti-wear properties of oxidized and temperature-controlled oils. The results of testing motor oils of various basic bases for temperature stability are presented, taking into account the thermal energy absorbed by the products of thermal degradation and evaporation. Linear dependencies between the decimal logarithms of the thermal energy absorbed by the thermal destruction products and the decimal logarithms of the thermal energy absorbed by the evaporation products are established. It has been established that the processes of thermal degradation begin after the evaporation of the required mass of the lubricant, i.e. when lubricants are being thermostated, first of all, evaporation processes occur, and after the accumulation of a certain amount of thermal energy, a mutual increase in the concentration of products of thermal destruction and evaporation occurs.

Key words: optical density volatility thermal energy decimal logarithm of thermal energy thermostating temperature

Receiving date: 12.04.2022

Approval date: 07.06.2022

Publication date: 07.07.2022

CITE DOWNLOAD