WO1998001739A3 - In situ oil quality evaluation with an acoustic sensor - Google Patents

In situ oil quality evaluation with an acoustic sensor Download PDF

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Publication number
WO1998001739A3
WO1998001739A3 PCT/US1997/011339 US9711339W WO9801739A3 WO 1998001739 A3 WO1998001739 A3 WO 1998001739A3 US 9711339 W US9711339 W US 9711339W WO 9801739 A3 WO9801739 A3 WO 9801739A3
Authority
WO
WIPO (PCT)
Prior art keywords
acoustic sensor
oil
sensor
quality evaluation
oil quality
Prior art date
Application number
PCT/US1997/011339
Other languages
French (fr)
Other versions
WO1998001739A2 (en
Inventor
Ryszard Lec
Lee Prager
Original Assignee
Control Devices Inc
Ryszard Lec
Lee Prager
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 Control Devices Inc, Ryszard Lec, Lee Prager filed Critical Control Devices Inc
Priority to AU35100/97A priority Critical patent/AU3510097A/en
Publication of WO1998001739A2 publication Critical patent/WO1998001739A2/en
Publication of WO1998001739A3 publication Critical patent/WO1998001739A3/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
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/02—Analysing fluids
    • G01N29/036—Analysing fluids by measuring frequency or resonance of acoustic waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/028—Material parameters
    • G01N2291/02818—Density, viscosity

Abstract

An acoustic sensor (52) is disclosed to detect quality of oil or a lubricating liquid resident in a machine (30). The acoustic sensor (52) may include a piezoelectric element (56) configured as a resonator to indicate a change in the property of an oil or lubricating liquid as a function of resonant frequency. Such a sensor (52) may be positioned in an engine (32) having a lubrication system (40) and coupled to a signal processor (62) to provide an indication of when the lubricant has degraded to an extent requiring replacement. Processor (62) may be part of a monitoring system (60) including an output device (66) to provide the indication. In further aspect, sensor (52) is employed to detect viscosity of oil or another liquid residing in a machine in situ.
PCT/US1997/011339 1996-06-27 1997-06-27 In situ oil quality evaluation with an acoustic sensor WO1998001739A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU35100/97A AU3510097A (en) 1996-06-27 1997-06-27 In situ oil quality evaluation with an acoustic sensor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US2089896P 1996-06-27 1996-06-27
US60/020,898 1996-06-27

Publications (2)

Publication Number Publication Date
WO1998001739A2 WO1998001739A2 (en) 1998-01-15
WO1998001739A3 true WO1998001739A3 (en) 1998-02-12

Family

ID=21801177

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1997/011339 WO1998001739A2 (en) 1996-06-27 1997-06-27 In situ oil quality evaluation with an acoustic sensor

Country Status (2)

Country Link
AU (1) AU3510097A (en)
WO (1) WO1998001739A2 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7043969B2 (en) * 2002-10-18 2006-05-16 Symyx Technologies, Inc. Machine fluid sensor and method
GB0302519D0 (en) 2003-02-04 2003-03-05 Trw Ltd Improvements in fluid monitoring
US7721590B2 (en) * 2003-03-21 2010-05-25 MEAS France Resonator sensor assembly
US10260388B2 (en) 2006-11-16 2019-04-16 General Electric Company Sensing system and method
US8392047B2 (en) * 2007-06-04 2013-03-05 Zf Friedrichshafen Ag System for preventing damage to a vehicle
CN105445149A (en) * 2015-11-20 2016-03-30 江苏国平油品科技有限公司 Viscometer
US10139375B2 (en) 2016-09-01 2018-11-27 Caterpillar Inc. Methods and systems for monitoring quality of hydraulic fluid in electro-hydraulic (EH) valve
EP3548718B1 (en) * 2016-11-30 2024-02-07 Westinghouse Air Brake Technologies Corporation Sensing system and method
WO2020231728A1 (en) * 2019-05-10 2020-11-19 Gcp Applied Technologies Inc. Instrument for direct measurement of air content in a liquid using a resonant electroacoustic transducer
EP3978920A1 (en) * 2020-10-01 2022-04-06 Siemens Aktiengesellschaft Automated determination of changes in liquid substances with a microwave cavity resonator

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3903732A (en) * 1974-06-17 1975-09-09 Honeywell Inc Viscosimeter and densitometer apparatus
US4117716A (en) * 1974-06-17 1978-10-03 Honeywell Inc. Densitometer apparatus
US4733556A (en) * 1986-12-22 1988-03-29 Ford Motor Company Method and apparatus for sensing the condition of lubricating oil in an internal combustion engine
US4741200A (en) * 1986-07-11 1988-05-03 Ford Motor Company Method and apparatus for measuring viscosity in a liquid utilizing a piezoelectric sensor
US5049742A (en) * 1989-11-16 1991-09-17 Kyodo Oil Technical Research Co., Ltd. Apparatus for detecting deterioration of engine oil
US5377531A (en) * 1993-09-30 1995-01-03 Gomm; Nelson R. Portable oil change analyzer

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3903732A (en) * 1974-06-17 1975-09-09 Honeywell Inc Viscosimeter and densitometer apparatus
US4117716A (en) * 1974-06-17 1978-10-03 Honeywell Inc. Densitometer apparatus
US4741200A (en) * 1986-07-11 1988-05-03 Ford Motor Company Method and apparatus for measuring viscosity in a liquid utilizing a piezoelectric sensor
US4733556A (en) * 1986-12-22 1988-03-29 Ford Motor Company Method and apparatus for sensing the condition of lubricating oil in an internal combustion engine
US5049742A (en) * 1989-11-16 1991-09-17 Kyodo Oil Technical Research Co., Ltd. Apparatus for detecting deterioration of engine oil
US5377531A (en) * 1993-09-30 1995-01-03 Gomm; Nelson R. Portable oil change analyzer

Also Published As

Publication number Publication date
WO1998001739A2 (en) 1998-01-15
AU3510097A (en) 1998-02-02

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