Characterizing lubricant oil degradation using fluorescence signals
US10317388B2 · kind B2 · utility
4Cited by
12References
13Claims
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Key dates
| Filing date | Aug 6, 2018 |
| Grant date | Jun 11, 2019 |
| Priority date | — |
| Expiry date | Aug 6, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/129
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods, systems, and apparatus to diagnose lubrication oil deterioration. In one aspect, a method includes irradiating a lubrication oil sample with a light beam to emit a light-induced fluorescence, detecting and processing the light-induced fluorescence signal to determine a temporal variation of a fluorescence intensity, identifying a steady state of the light-induced fluorescence signal, processing the temporal variation of the fluorescence intensity to determine a lubrication oil parameter, and correlating the oil parameter to a calibration curve to diagnose the lubrication oil deterioration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.