WO2002065086A3 - Method and device for measuring the efficacy of a lubricating oil and uses thereof - Google Patents

Method and device for measuring the efficacy of a lubricating oil and uses thereof Download PDF

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Publication number
WO2002065086A3
WO2002065086A3 PCT/FR2002/000522 FR0200522W WO02065086A3 WO 2002065086 A3 WO2002065086 A3 WO 2002065086A3 FR 0200522 W FR0200522 W FR 0200522W WO 02065086 A3 WO02065086 A3 WO 02065086A3
Authority
WO
WIPO (PCT)
Prior art keywords
lubricant
measuring
frequency range
efficacy
impedance
Prior art date
Application number
PCT/FR2002/000522
Other languages
French (fr)
Other versions
WO2002065086A2 (en
Inventor
Frederic Jarnais
Ahmed Belghazi
Benoit Albinet
Thierry Chevrot
Original Assignee
Totalfinaelf France
Frederic Jarnais
Ahmed Belghazi
Benoit Albinet
Thierry Chevrot
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Totalfinaelf France, Frederic Jarnais, Ahmed Belghazi, Benoit Albinet, Thierry Chevrot filed Critical Totalfinaelf France
Priority to AU2002241017A priority Critical patent/AU2002241017A1/en
Priority to EP02706843A priority patent/EP1368631A2/en
Publication of WO2002065086A2 publication Critical patent/WO2002065086A2/en
Publication of WO2002065086A3 publication Critical patent/WO2002065086A3/en

Links

Classifications

    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/026—Dielectric impedance spectroscopy

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Pathology (AREA)
  • Immunology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

The invention concerns a method for measuring the efficacy of a lubricant by electrochemical impedance spectroscopy, which consists in: introducing the lubricant in a measuring cell comprising two metal electrodes; feeding said electrodes with at least a variable frequency voltage; measuring the impedance of the lubricant-electrode system in the high frequency range and in the low frequency range; simulating, by means of a software, an equivalent electric circuit supplying an impedance profile coinciding with the one measured with the cell; calculating, on the basis of said simulated equivalent electric circuit, at least a first specific parameter in the high frequency range and representing the modifications in the volume characteristics of the lubricant, and at least a second specific parameter in the low frequency range and representing surface characteristics of the lubricant. The invention also concerns a device for implementing said method.
PCT/FR2002/000522 2001-02-12 2002-02-12 Method and device for measuring the efficacy of a lubricating oil and uses thereof WO2002065086A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2002241017A AU2002241017A1 (en) 2001-02-12 2002-02-12 Method and device for measuring the efficacy of a lubricating oil and uses thereof
EP02706843A EP1368631A2 (en) 2001-02-12 2002-02-12 Method and device for measuring the efficacy of a lubricating oil and uses thereof

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0101862A FR2820824B1 (en) 2001-02-12 2001-02-12 DEVICE FOR MEASURING THE EFFICIENCY OF A LUBRICATING OIL AND ITS APPLICATIONS
FR01/01862 2001-02-12

Publications (2)

Publication Number Publication Date
WO2002065086A2 WO2002065086A2 (en) 2002-08-22
WO2002065086A3 true WO2002065086A3 (en) 2003-09-25

Family

ID=8859889

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR2002/000522 WO2002065086A2 (en) 2001-02-12 2002-02-12 Method and device for measuring the efficacy of a lubricating oil and uses thereof

Country Status (4)

Country Link
EP (1) EP1368631A2 (en)
AU (1) AU2002241017A1 (en)
FR (1) FR2820824B1 (en)
WO (1) WO2002065086A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7109729B2 (en) 2002-06-07 2006-09-19 Exxonmobil Research And Engineering Company Method for analysis of a working fluid using impedance spectroscopy
US6911830B2 (en) * 2002-08-22 2005-06-28 Delphi Technologies, Inc. Diesel engine lubricating oil contaminant sensor method
US7043372B2 (en) * 2003-11-26 2006-05-09 Eaton Corporation Fluid condition monitoring using broad spectrum impedance spectroscopy
US7253644B2 (en) 2004-06-01 2007-08-07 Exxonmobil Research And Engineering Company Apparatus and method for measuring electrochemical and viscoelastic properties of a liquid

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5274335A (en) * 1992-04-06 1993-12-28 General Motors Corporation Oil sensor systems and methods of qualitatively determining oil type and condition
US5523692A (en) * 1993-03-23 1996-06-04 Nippondenso Co., Ltd. Oil deterioration detector
WO2000033062A1 (en) * 1998-12-01 2000-06-08 Cyrano Sciences, Inc. Aligned particle based sensor elements
EP1014082A2 (en) * 1998-12-23 2000-06-28 Eaton Corporation Fluid condition monitor
EP1098197A2 (en) * 1999-11-03 2001-05-09 Eaton Corporation Monitoring fluid condition through an aperture

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5274335A (en) * 1992-04-06 1993-12-28 General Motors Corporation Oil sensor systems and methods of qualitatively determining oil type and condition
US5523692A (en) * 1993-03-23 1996-06-04 Nippondenso Co., Ltd. Oil deterioration detector
WO2000033062A1 (en) * 1998-12-01 2000-06-08 Cyrano Sciences, Inc. Aligned particle based sensor elements
EP1014082A2 (en) * 1998-12-23 2000-06-28 Eaton Corporation Fluid condition monitor
EP1098197A2 (en) * 1999-11-03 2001-05-09 Eaton Corporation Monitoring fluid condition through an aperture

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
POPKIROV G S ET AL: "OPTIMIZATION OF THE PERTUBATION SIGNAL FOR ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY IN THE TIME DOMAIN", REVIEW OF SCIENTIFIC INSTRUMENTS, AMERICAN INSTITUTE OF PHYSICS. NEW YORK, US, vol. 64, no. 11, November 1993 (1993-11-01), pages 3111 - 3115, XP000955440, ISSN: 0034-6748 *
WANG S S ET AL: "The application of a.c. impedance technique for detecting glycol contamination in engine oil", SENSORS AND ACTUATORS B, ELSEVIER SEQUOIA S.A., LAUSANNE, CH, vol. 40, no. 2-3, 15 May 1997 (1997-05-15), pages 193 - 197, XP004088719, ISSN: 0925-4005 *

Also Published As

Publication number Publication date
WO2002065086A2 (en) 2002-08-22
AU2002241017A1 (en) 2002-08-28
EP1368631A2 (en) 2003-12-10
FR2820824B1 (en) 2004-06-04
FR2820824A1 (en) 2002-08-16

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