WO2012032197A1 - Método y dispositivo para la determinación del estado de degradación de un aceite lubricante - Google Patents
Método y dispositivo para la determinación del estado de degradación de un aceite lubricante Download PDFInfo
- Publication number
- WO2012032197A1 WO2012032197A1 PCT/ES2010/070582 ES2010070582W WO2012032197A1 WO 2012032197 A1 WO2012032197 A1 WO 2012032197A1 ES 2010070582 W ES2010070582 W ES 2010070582W WO 2012032197 A1 WO2012032197 A1 WO 2012032197A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- oil
- degradation
- transmittance
- state
- determining
- Prior art date
Links
- 238000006731 degradation reaction Methods 0.000 title claims abstract description 43
- 230000015556 catabolic process Effects 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000000314 lubricant Substances 0.000 title description 8
- 238000002834 transmittance Methods 0.000 claims abstract description 13
- 238000005259 measurement Methods 0.000 claims abstract description 12
- 239000010913 used oil Substances 0.000 claims abstract description 6
- 239000003921 oil Substances 0.000 claims description 56
- 239000010687 lubricating oil Substances 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 5
- 230000001131 transforming effect Effects 0.000 claims description 2
- 238000000411 transmission spectrum Methods 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 230000003595 spectral effect Effects 0.000 abstract description 2
- 239000000654 additive Substances 0.000 description 10
- 238000001228 spectrum Methods 0.000 description 6
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 238000002835 absorbance Methods 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 239000002199 base oil Substances 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000001429 visible spectrum Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000010525 oxidative degradation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000002235 transmission spectroscopy Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/26—Oils; Viscous liquids; Paints; Inks
- G01N33/28—Oils, i.e. hydrocarbon liquids
- G01N33/2888—Lubricating oil characteristics, e.g. deterioration
Definitions
- the present invention relates to a method for determining the state of degradation of a lubricating and hydraulic oil. More specifically, it refers to a method and a device for providing an accurate reading of the overall degradation during the use of an oil by measuring the transmittance in the visible range of the light spectrum of said oil.
- the process of degradation of an oil follows several totally known steps: first it undergoes a loss of the content of additives and then acidic compounds are generated.
- the percentage of acid constituents is determined by analytical techniques.
- There are on-line measuring equipment such as the one described in JP 2000146696 that use absorbance in the visible range of the electromagnetic spectrum to correlate it with parameter AN.
- These methods have the limitation that, although AN is one of the most indicative parameters of the lubricating oil state, it only contemplates the oxidative degradation of the oil.
- this equipment cannot be used in engines due to the carbon generated in the combustion process.
- the charcoal darkens the oil, so that the color change is not due to a change in the state of degradation of the oil.
- US Pat. No. 6,061, 139 presents a method and apparatus for monitoring the thermal degradation of the lubricant. This method uses the 850 nm band of the light spectrum to determine the state of the oil. The use of a single band does not have a very high sensitivity and the result is affected by other factors.
- the RU2329502 patent also uses measurements of the transmittance of the visible light spectrum with the 3 spectral ranges (red, green and blue) to result in the content of "total impurities", particles that are generated during oil degradation.
- the present invention aims at facilitating real-time monitoring and providing a device and a fast and reliable method of determining the state of degradation of the oil that solves the problems set forth above.
- the method and sensor result in the Oil Degradation Index (OD), which indicates as a percentage the overall degradation at the time of monitoring or measurement.
- OD Oil Degradation Index
- the corresponding device comprises a white light source, a fluidic cell adapted for the passage of oil through it, a detector capable of transforming the amount of light emitted by the source and absorbed by the oil into an electrical signal characteristic of the transmittance in the visible and program means to carry out the above procedure.
- a particle filter and means for removing oil bubbles are also provided.
- Figure 1 It is a scheme of the measuring principle, where the intensity of light transmitted after passing through the oil is represented and collected by the detector.
- Figure 2 is a scheme of the implementation of the sensor of the invention in a lubrication system.
- Figures 3a and 3b are graphs showing the value of oil degradation (OD) measured according to the invention, compared to the most representative parameters of the degradation of two oils.
- the sensor of the invention (1) is designed to be installed in a bypass of the lubrication system (2).
- the installation takes advantage of the pressure difference so that the oil (5) circulates through the sensor.
- the oil after the by-pass, passes through a series of hydraulic components inside the sensor: an electrovalve that manages the passage of oil through the device, a particle filter to remove particles of a certain size and a system to eliminate bubbles that are generated in the oil circulation system.
- the oil After passing through all the hydraulic elements, the oil passes to the fluidic cell (3) which is where the measurement is to be carried out. This cell has an established light path.
- a beam of white light is struck in the visible range of the spectrum by means of an LED-type emitter (8), and the light that is not absorbed by the oil is collected by a detector (for example a photodiode ).
- the detector (4) collects the light at various wavelengths of the visible spectrum. Said spectrum range covers wavelengths from 380nm to 780nm.
- transmission spectroscopy is used.
- a visible beam of light passes through the oil into the fluidic glass cell.
- the technique used in the state of the art sensors to monitor the degradation of used oils is based on the search for information in the visible spectrum, correlating the physical chemical variables of the lubricating oil (Acid Number AN, Viscosity ...) with the Sample color change.
- the degradation index calculated by known methods is a mixture of several laboratory parameters related to the determination of the state of degradation of the oil. These parameters are RUL (Remaining Useful Lifetime in English, Remaining Useful Life), Oxidation (FTIR, Fourier Transform InfraRed,), Acid Number (AN) and Viscosity.
- RUL Remaining Useful Lifetime in English, Remaining Useful Life
- Oxidation FTIR, Fourier Transform InfraRed
- AN Acid Number
- Viscosity Viscosity.
- Each parameter is indicative of a certain degree of degradation, for example the RUL is indicative at the beginning of the degradation process, when the additives are being consumed.
- AN and FTIR oxidation are indicative later, when the first acidic compounds begin to be generated.
- the AN is also a good indication that additives are being lost, since their value varies (decreases) and then increases.
- the viscosity is the last one to vary, almost at the end of the life of the oil.
- the darkening or color change of the oil is appreciated from the beginning to the end, from when the additives begin to be consumed until it is completely degraded.
- the percentage of transmittance varies as the oil degrades. Correlating all these parameters to calculate the state of degradation is, however, much more laborious than applying the method of the invention.
- Lubricating oils may have different colors at the beginning.
- the elements responsible for the color of a lubricating oil are the base oil and the additives.
- Base oil The color of a lubricant varies depending on the degree of refining and the origin of refined oil. Generally the color is closely related to the sulfur and aromatic content
- additives Some additives are determinants of the color of the final oil.
- those sulfur-containing additives in their composition have a greater influence on the final color of the same (such as some detergent or antioxidant additives)
- the lubricants get darker with use.
- a color change in a lubricant indicates some kind of contamination, overheating, excessive degradation or an inappropriate lubricant.
- the method of calculating the remaining life of the oil according to the invention takes into account the components in the red, green and blue bands of the transmittance of the unused oil (reference or new), l R0 , l G oel B o.
- a dark measurement is made (without light hitting the detector) to subtract it from subsequent measurements.
- Several measurements of the transmittance are then carried out (about 50 preferably) and an arithmetic average of the transmittance is obtained for each color, whereby the values l R , l G the B (transmittance in the three main bands for the waste oil).
- the value of the color index of the oil that is measured by the formula and that of the reference oil is obtained.
- Oil Degradation OLED Degradation
- Alarms can also be applied for example at 10%, 20% or 30% so that the evolution of the oil can be monitored.
- Figures 3a and 3b show tests performed for two types of oils: Fuch Renolyn 320 ⁇ and Shell Ornala HD 320 ⁇ . The test was carried out using the procedure described above and different degrees of degradation were obtained until the oil tested was completely degraded. The degradation index OD has been obtained by means of the sensor of the invention and compared with the laboratory parameters.
- Figure 3 shows the results of the Fuch Renolyn 320 oil degradation process in which the results of the OD degradation index (%) are compared with the different laboratory parameters; RUL, AN, Oxi by FTIR and Viscosity. It is observed in the RUL chart that the variation of RUL is in the first part of the degradation process, while the additives are running out. Oxidation (Oxi) is the next parameter to begin to vary and then the AN. Viscosity detects changes in advanced degradation states.
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Health & Medical Sciences (AREA)
- Pathology (AREA)
- Immunology (AREA)
- General Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES10856908.8T ES2676649T3 (es) | 2010-09-07 | 2010-09-07 | Método y dispositivo para la determinación del estado de degradación de un aceite lubricante |
US13/820,274 US9063075B2 (en) | 2010-09-07 | 2010-09-07 | Method and device for determining the state of degradation of a lubricant oil |
JP2013526516A JP2013536939A (ja) | 2010-09-07 | 2010-09-07 | 潤滑油の劣化状態を判定するための方法および装置 |
CN2010800689739A CN103210299A (zh) | 2010-09-07 | 2010-09-07 | 用于确定润滑油衰变状态的方法和装置 |
PCT/ES2010/070582 WO2012032197A1 (es) | 2010-09-07 | 2010-09-07 | Método y dispositivo para la determinación del estado de degradación de un aceite lubricante |
BR112013005216A BR112013005216A2 (pt) | 2010-09-07 | 2010-09-07 | "método para calcular a degradação global de um óleo lubrificante usado e dispositivo para determinar o estado de degradação de um óleo lubrificante usado" |
DK10856908.8T DK2615444T3 (en) | 2010-09-07 | 2010-09-07 | Method and apparatus for determining the degradation state of a lubricating oil |
EP10856908.8A EP2615444B1 (en) | 2010-09-07 | 2010-09-07 | Method and device for determining the state of degradation of a lubricant oil |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/ES2010/070582 WO2012032197A1 (es) | 2010-09-07 | 2010-09-07 | Método y dispositivo para la determinación del estado de degradación de un aceite lubricante |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012032197A1 true WO2012032197A1 (es) | 2012-03-15 |
Family
ID=45810155
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/ES2010/070582 WO2012032197A1 (es) | 2010-09-07 | 2010-09-07 | Método y dispositivo para la determinación del estado de degradación de un aceite lubricante |
Country Status (8)
Country | Link |
---|---|
US (1) | US9063075B2 (es) |
EP (1) | EP2615444B1 (es) |
JP (1) | JP2013536939A (es) |
CN (1) | CN103210299A (es) |
BR (1) | BR112013005216A2 (es) |
DK (1) | DK2615444T3 (es) |
ES (1) | ES2676649T3 (es) |
WO (1) | WO2012032197A1 (es) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019002651A1 (es) | 2017-06-27 | 2019-01-03 | Fundación Tekniker | Sistema y método de monitorización del estado de un fluido |
JP2020186941A (ja) * | 2019-05-10 | 2020-11-19 | 株式会社日立製作所 | 潤滑油の診断方法および潤滑油の監視システム |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5839436B2 (ja) * | 2010-12-02 | 2016-01-06 | ナブテスコ株式会社 | 光学センサ |
KR20180115335A (ko) | 2010-12-02 | 2018-10-22 | 나부테스코 가부시키가이샤 | 산업 로봇용 감속기 |
FR3032531B1 (fr) * | 2015-02-06 | 2017-03-10 | Total Marketing Services | Installation et procede de suivi de l'evolution de la basicite d'un lubrifiant |
JP6409227B2 (ja) * | 2015-03-30 | 2018-10-24 | 三菱重工業株式会社 | 油劣化度評価方法、油劣化度評価装置 |
MY175958A (en) * | 2015-09-09 | 2020-07-16 | Tnb Res Sdn Bhd | Method for obtaining failure prognostic information of electrical power equipment |
RU2606837C1 (ru) * | 2015-09-14 | 2017-01-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Башкирский государственный университет" | Способ определения цвета по шкале ЦНТ нефтяных масляных фракций |
JP2017215254A (ja) * | 2016-06-01 | 2017-12-07 | 株式会社Ihi | 潤滑状態判定装置及び潤滑状態判定方法 |
CN106769910A (zh) * | 2016-12-26 | 2017-05-31 | 广州机械科学研究院有限公司 | 一种油液颜色检测传感器 |
JP7099816B2 (ja) * | 2017-10-27 | 2022-07-12 | 株式会社日立製作所 | 潤滑油の劣化診断方法、回転機械の潤滑油の監視システムおよび方法 |
WO2019103091A1 (ja) * | 2017-11-22 | 2019-05-31 | 川崎重工業株式会社 | 機械装置の劣化診断装置、劣化診断装置において実行される機械装置の劣化診断方法、及び、機械装置の劣化診断方法 |
CN108931502B (zh) * | 2018-06-01 | 2020-09-08 | 西安交通大学 | 红外点状激光发射器在线监测润滑脂衰变程度系统及方法 |
JP6954405B2 (ja) * | 2019-05-16 | 2021-10-27 | ダイキン工業株式会社 | 液体センサ及び油圧ユニット |
JP6966714B2 (ja) * | 2019-08-01 | 2021-11-17 | ダイキン工業株式会社 | 液体劣化判定装置及び油圧ユニット |
DE102020111029A1 (de) | 2020-04-23 | 2021-10-28 | Bayerische Motoren Werke Aktiengesellschaft | Messvorrichtung zum optischen Messen einer Flüssigkeit |
CN113640227B (zh) * | 2021-08-24 | 2022-05-17 | 中国科学院兰州化学物理研究所 | 一种基于光热效应的润滑油衰变监测模型建立方法及监测方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5194910A (en) * | 1990-07-31 | 1993-03-16 | Gas Research Institute | Use of optical spectrometry to evaluate the condition of used motor oil |
US6061139A (en) | 1996-10-04 | 2000-05-09 | Hitachi, Ltd | Nondestructive diagnostic method and nondestructive diagnostic apparatus |
JP2000146696A (ja) | 1998-11-05 | 2000-05-26 | Mk Seiko Co Ltd | オイル等の劣化判定方法および装置 |
US20080024761A1 (en) * | 2006-07-27 | 2008-01-31 | Hosung Kong | Method and apparatus for monitoring oil deterioration in real time |
RU2329502C1 (ru) | 2006-11-28 | 2008-07-20 | Государственное научное учреждение "Институт механики металлополимерных систем имени В.А. Белого Национальной академии наук Беларуси" | Способ оперативного контроля работоспособности масла и устройство для его осуществления |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04142447A (ja) * | 1990-10-02 | 1992-05-15 | Ishikawajima Harima Heavy Ind Co Ltd | 潤滑油監視装置 |
JP3266637B2 (ja) * | 1992-02-14 | 2002-03-18 | 出光興産株式会社 | 潤滑油劣化度判定方法およびその装置 |
JPH0634541A (ja) * | 1992-07-14 | 1994-02-08 | Nippon Oil Co Ltd | 潤滑油劣化モニター装置 |
JP2963346B2 (ja) * | 1994-08-22 | 1999-10-18 | 株式会社ジャパンエナジー | 潤滑油の劣化検知方法 |
JPH1082735A (ja) * | 1996-09-10 | 1998-03-31 | Nippon Soken Inc | 潤滑油中の不溶解分測定装置 |
JP4468046B2 (ja) * | 2004-04-01 | 2010-05-26 | 株式会社構造計画研究所 | 鋼材から成る構造物の発錆状況判定装置、方法及びプログラム |
JP4860576B2 (ja) * | 2006-09-01 | 2012-01-25 | 中部電力株式会社 | セルロース繊維の劣化判定方法および劣化判定装置 |
JP4833047B2 (ja) * | 2006-12-06 | 2011-12-07 | Ntn株式会社 | 軸受の潤滑剤劣化検出装置および検出装置付き軸受 |
KR100928947B1 (ko) * | 2008-02-21 | 2009-11-30 | 한국과학기술연구원 | 통합형 인라인 오일 모니터링 장치 |
-
2010
- 2010-09-07 JP JP2013526516A patent/JP2013536939A/ja active Pending
- 2010-09-07 ES ES10856908.8T patent/ES2676649T3/es active Active
- 2010-09-07 DK DK10856908.8T patent/DK2615444T3/en active
- 2010-09-07 BR BR112013005216A patent/BR112013005216A2/pt not_active IP Right Cessation
- 2010-09-07 EP EP10856908.8A patent/EP2615444B1/en active Active
- 2010-09-07 CN CN2010800689739A patent/CN103210299A/zh active Pending
- 2010-09-07 US US13/820,274 patent/US9063075B2/en active Active
- 2010-09-07 WO PCT/ES2010/070582 patent/WO2012032197A1/es active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5194910A (en) * | 1990-07-31 | 1993-03-16 | Gas Research Institute | Use of optical spectrometry to evaluate the condition of used motor oil |
US6061139A (en) | 1996-10-04 | 2000-05-09 | Hitachi, Ltd | Nondestructive diagnostic method and nondestructive diagnostic apparatus |
JP2000146696A (ja) | 1998-11-05 | 2000-05-26 | Mk Seiko Co Ltd | オイル等の劣化判定方法および装置 |
US20080024761A1 (en) * | 2006-07-27 | 2008-01-31 | Hosung Kong | Method and apparatus for monitoring oil deterioration in real time |
US7612874B2 (en) | 2006-07-27 | 2009-11-03 | Korea Institute Of Science & Technology | Method and apparatus for monitoring oil deterioration in real time |
RU2329502C1 (ru) | 2006-11-28 | 2008-07-20 | Государственное научное учреждение "Институт механики металлополимерных систем имени В.А. Белого Национальной академии наук Беларуси" | Способ оперативного контроля работоспособности масла и устройство для его осуществления |
Non-Patent Citations (1)
Title |
---|
GORRITXATEGI ET AL.: "Nuevo metodo para la evaluacion del estado de calidad del lubricante basado in analisis espectrometrico visible", MANTENIMIENTO, no. 220, December 2008 (2008-12-01), pages 29 - 40, XP008172176 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019002651A1 (es) | 2017-06-27 | 2019-01-03 | Fundación Tekniker | Sistema y método de monitorización del estado de un fluido |
JP2020186941A (ja) * | 2019-05-10 | 2020-11-19 | 株式会社日立製作所 | 潤滑油の診断方法および潤滑油の監視システム |
JP7179674B2 (ja) | 2019-05-10 | 2022-11-29 | 株式会社日立製作所 | 潤滑油の診断方法および潤滑油の監視システム |
Also Published As
Publication number | Publication date |
---|---|
EP2615444B1 (en) | 2018-04-11 |
US9063075B2 (en) | 2015-06-23 |
US20140146307A1 (en) | 2014-05-29 |
ES2676649T3 (es) | 2018-07-23 |
EP2615444A4 (en) | 2017-04-12 |
EP2615444A1 (en) | 2013-07-17 |
CN103210299A (zh) | 2013-07-17 |
BR112013005216A2 (pt) | 2016-04-26 |
JP2013536939A (ja) | 2013-09-26 |
DK2615444T3 (en) | 2018-07-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2012032197A1 (es) | Método y dispositivo para la determinación del estado de degradación de un aceite lubricante | |
JP6618485B2 (ja) | 潤滑油の管理方法および潤滑油の寿命予測方法 | |
KR100795373B1 (ko) | 오일 열화 실시간 모니터링 방법 및 장치 | |
US9689802B2 (en) | Systems, methods and apparatus for analysis of multiphase fluid mixture in pipelines | |
CN108603838B (zh) | 利用荧光上升时间确定油的劣化 | |
JP7099816B2 (ja) | 潤滑油の劣化診断方法、回転機械の潤滑油の監視システムおよび方法 | |
IL167479A (en) | Fluid condition monitor | |
JP2008542713A (ja) | 使用中の潤滑油の鉄含有量の定量方法及びテストキット | |
RU2329502C1 (ru) | Способ оперативного контроля работоспособности масла и устройство для его осуществления | |
US20200200673A1 (en) | Inferential fluid condition sensor and method thereof | |
JP5938620B2 (ja) | 潤滑剤の劣化度評価装置及び劣化度評価方法 | |
Sharma et al. | IoT based dipstick type engine oil level and impurities monitoring system: a portable online spectrophotometer | |
EP3327736B1 (en) | Method for determining abnormality in oil-filled electric apparatus | |
WO2010107893A2 (en) | Method and test kit for the determination of iron content of in-use lubricants | |
Victor Ossia et al. | Utilization of color change in the condition monitoring of synthetic hydraulic oils | |
Glos et al. | Monitoring an Engine Condition based on Tribological Diagnostics in Military Vehicles | |
Fentress et al. | The use of linear sweep voltammetry in condition monitoring of diesel engine oil | |
JP7499712B2 (ja) | 潤滑油の診断方法およびシステム | |
Sharma et al. | IoT based engine oil sludge monitoring system: a portable colorimetric analyzer | |
Horwich et al. | Using accurate online oil condition monitoring sensor data to improve HUMS | |
Lee et al. | Design of Optical Biological Sensor for Phycocyanin Parameters Measurement using Fluorescence Technique | |
KR20220014518A (ko) | 엔진 오일 산화도 측정 장치 | |
Li et al. | Study on Light Scattering Method to Monitor Vehicle Lubricant Performance | |
Andrews et al. | Comparison of lubricant oil antioxidant analysis using remaining useful life of lubricant oil determined by fluorescence spectroscopy and linear sweep voltammetry | |
Kowalik et al. | Advancements in Grease Sampling and Analysis Using Simple Screening Techniques |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 10856908 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2013526516 Country of ref document: JP Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2010856908 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13820274 Country of ref document: US |
|
REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: 112013005216 Country of ref document: BR |
|
ENP | Entry into the national phase |
Ref document number: 112013005216 Country of ref document: BR Kind code of ref document: A2 Effective date: 20130304 |