Method for diagnosing lubricant and system of monitoring lubricant
US11668285B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 24, 2020 |
| Grant date | Jun 6, 2023 |
| Priority date | — |
| Expiry date | Nov 8, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/72
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for diagnosing a lubricant containing an additive, is executed by an information processor. Chromaticity information of the lubricant which is a diagnosis target is obtained from an input device, the chromaticity information is obtained by an optical sensor, and a storage device stores a deterioration curve of the lubricant which is the diagnosis target, the deterioration curve is determined in advance regarding a transition in a chromaticity coordinate caused by a deterioration, and a chromaticity coordinate corresponding to a limit contamination level determined in advance using a contaminated lubricant. The processing device obtains a chromaticity coordinate of the lubricant from the chromaticity information and uses a relative contamination level obtained from a distance of the chromaticity coordinate of the lubricant from the deterioration curve and a distance of the chromaticity coordinate corresponding to the limit contamination level from the deterioration curve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.