METHOD OF DETERMINING SERVICEABILITY OF LUBRICATING OILS Russian patent published in 2020 - IPC G01N33/30 

FIELD: measurement technology.

SUBSTANCE: invention relates to technology of assessment of quality of operating engine oils, technical condition of internal combustion engines and filtration system. Disclosed is a method of determining operability of lubricating oil, comprising the following: sampling operating oil from an internal combustion engine for a defined mileage, determining vehicle mileage corresponding to sampling time, sample is photometrated, determining optical density, multiplying the optical density by the path, calculating the amount of heat energy absorbed by the aging products of the lubricating oil during engine operation, determining decimal logarithm of heat energy absorbed by products of lubricating oil aging during its operation in engine, graphical dependence of decimal logarithm of heat energy absorbed by products of aging of lubricating oil during operation, from mileage, on which operability of lubricating oil is determined.

EFFECT: high information value of monitoring the state of operating lubricating oil, engine technical state and filtration system during operation.

1 cl, 2 dwg, 4 tbl