WO2010078555A3 - Capacitive and resistive conductivity engine oil analyzer - Google Patents

Capacitive and resistive conductivity engine oil analyzer Download PDF

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Publication number
WO2010078555A3
WO2010078555A3 PCT/US2010/020050 US2010020050W WO2010078555A3 WO 2010078555 A3 WO2010078555 A3 WO 2010078555A3 US 2010020050 W US2010020050 W US 2010020050W WO 2010078555 A3 WO2010078555 A3 WO 2010078555A3
Authority
WO
WIPO (PCT)
Prior art keywords
engine oil
signal
sensing
resistive
capacitive
Prior art date
Application number
PCT/US2010/020050
Other languages
French (fr)
Other versions
WO2010078555A2 (en
Inventor
Charles S. Miller
Original Assignee
Waveon Technologies, Inc.
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 Waveon Technologies, Inc. filed Critical Waveon Technologies, Inc.
Publication of WO2010078555A2 publication Critical patent/WO2010078555A2/en
Publication of WO2010078555A3 publication Critical patent/WO2010078555A3/en

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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
    • G01N27/028—Circuits therefor

Abstract

A device is disclosed for detecting the degradation of or the presence of contaminants in materials of interest, particularly engine oil. The invention includes a sensor for sensing the dielectric value (or permittivity) and resistive conductivity of the material under test by applying a changing electric field to the material and sensing the resulting signal having a time signal proportional to the dielectric and resistive value of the fluid. This invention also includes a signal processing circuit, responsive to the sensing signal, for converting the signal received to a steady state analog voltage which voltage can be compared to known values representing the state of the material being analyzed.
PCT/US2010/020050 2009-01-02 2010-01-04 Capacitive and resistive conductivity engine oil analyzer WO2010078555A2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US20399009P 2009-01-02 2009-01-02
US61/203,990 2009-01-02
US27706209P 2009-09-21 2009-09-21
US61/277,062 2009-09-21

Publications (2)

Publication Number Publication Date
WO2010078555A2 WO2010078555A2 (en) 2010-07-08
WO2010078555A3 true WO2010078555A3 (en) 2010-10-14

Family

ID=42310636

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2010/020050 WO2010078555A2 (en) 2009-01-02 2010-01-04 Capacitive and resistive conductivity engine oil analyzer

Country Status (1)

Country Link
WO (1) WO2010078555A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105158298A (en) * 2015-06-03 2015-12-16 中国人民解放军后勤工程学院 Oil liquid quality detection method and system
CN105572184B (en) * 2015-12-29 2018-07-27 西安交通大学 A kind of measuring device and method obtaining inverse flexoelectric coefficient based on capacitance variations
US10197488B2 (en) 2017-06-15 2019-02-05 Pratt & Whitney Canada Corp. Systems and methods for detecting chips in fluid of aircraft engine
EP3805730A4 (en) * 2018-06-11 2022-03-09 National Institute for Materials Science Material analysis method and material analysis device
CN110737343A (en) * 2018-07-18 2020-01-31 北京小米移动软件有限公司 False touch prevention method and device for electronic equipment, electronic equipment and storage medium

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030222656A1 (en) * 2001-12-20 2003-12-04 Phillips Alan D. On-line oil condition sensor system for rotating and reciprocating machinery
US6867603B2 (en) * 2002-12-04 2005-03-15 Delphi Technologies, Inc. Method for measuring high frequency resistance in diesel engine lubrication oil
US7109729B2 (en) * 2002-06-07 2006-09-19 Exxonmobil Research And Engineering Company Method for analysis of a working fluid using impedance spectroscopy
WO2008156112A1 (en) * 2007-06-19 2008-12-24 Mitsubishi Heavy Industries, Ltd. Oil degradation detecting device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030222656A1 (en) * 2001-12-20 2003-12-04 Phillips Alan D. On-line oil condition sensor system for rotating and reciprocating machinery
US7109729B2 (en) * 2002-06-07 2006-09-19 Exxonmobil Research And Engineering Company Method for analysis of a working fluid using impedance spectroscopy
US6867603B2 (en) * 2002-12-04 2005-03-15 Delphi Technologies, Inc. Method for measuring high frequency resistance in diesel engine lubrication oil
WO2008156112A1 (en) * 2007-06-19 2008-12-24 Mitsubishi Heavy Industries, Ltd. Oil degradation detecting device

Also Published As

Publication number Publication date
WO2010078555A2 (en) 2010-07-08

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