US Patent No: 7,391,035

Number of patents in Portfolio can not be more than 2000

Method and device for monitoring oil oxidation in real time by measuring fluorescence

ALSO PUBLISHED AS: 20070187617

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Abstract

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There is provided a method and a device of monitoring oil oxidation in real time. The method of the present invention comprises the steps of: irradiating ultraviolet light into oil to be monitored; measuring fluorescence emission intensity of the oil in red, green and blue wavelength bands; determining one value measured in a relatively long wavelength band and the other value measured in a relatively short wavelength band among the fluorescence emission intensity measured in the red, green and blue wavelength bands; calculating a fluorescence emission ratio which is defined as a ratio of the value measured in the relatively long wavelength band to the value measured in the relatively short wavelength band; and monitoring a change in the fluorescence emission ratio. It is then determined whether the fluorescence emission ratio reaches a predetermined critical magnitude. When the fluorescence emission ratio reaches the critical magnitude, the necessity of replacing the oil with new one is indicated.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGYDAEJEON2005

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Han, Hung Gu Seoul, KR 14 32
Kong, Hosung Seoul, KR 13 20
Makarenko, Vladimir Gomel, BY 6 10
Markova, Lyubov Gomel, BY 4 7
Semenyuk, Mikhail Gomel, BY 6 14
Yoon, Eui Sung Seoul, KR 19 8

Cited Art Landscape

Patent Info (Count) # Cites Year
 
3M INNOVATIVE PROPERTIES COMPANY (1)
5,980,992 Fluorochemical treatments to provide low-energy surfaces 27 1997
 
KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS (1)
6,633,043 Method for characterization of petroleum oils using normalized time-resolved fluorescence spectra 13 2002
 
KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY (1)
7,136,155 Apparatus for measuring oil oxidation using fluorescent light reflected from oil 5 2004
 
KOREA INSTITUTE OF SCIENCE & TECHNOLOGY INFORMATION (1)
6,842,234 Apparatus for measuring soot content in diesel engine oil in real time 3 2002
 
Lubrigard Limited (1)
6,459,995 Electrical measurement of oil quality 44 2000
 
Mobil Oil Corporation (1)
4,814,614 Method for characterizing oil-bearing inclusions via fluorescence microspectrophotometry 22 1987
 
Texaco Inc. (1)
5,780,850 API estimate using multiple fluorescence measurements 6 1996
 
VOELKER SENSORS, INC. (1)
5,789,665 Oil quality sensor for use in a motor 56 1996

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
BASF SE (1)
8,610,097 Method for the continuous production of water-absorbent polymer particles 0 2007
 
KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY (1)
8,521,451 Method and apparatus for measuring oil viscosity 0 2010
 
MAN TRUCK & BUS AG (1)
8,833,145 Method and device for determining the soot concentration in the engine oil of internal combustion engines 0 2011

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