JPS6252124B2 - - Google Patents

Info

Publication number
JPS6252124B2
JPS6252124B2 JP4298083A JP4298083A JPS6252124B2 JP S6252124 B2 JPS6252124 B2 JP S6252124B2 JP 4298083 A JP4298083 A JP 4298083A JP 4298083 A JP4298083 A JP 4298083A JP S6252124 B2 JPS6252124 B2 JP S6252124B2
Authority
JP
Japan
Prior art keywords
engine oil
current
oil
deterioration
value
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
JP4298083A
Other languages
English (en)
Japanese (ja)
Other versions
JPS59168214A (ja
Inventor
Takayuki Kato
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Central R&D Labs Inc
Original Assignee
Toyota Central R&D Labs 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 Toyota Central R&D Labs Inc filed Critical Toyota Central R&D Labs Inc
Priority to JP4298083A priority Critical patent/JPS59168214A/ja
Priority to US06/585,257 priority patent/US4686857A/en
Priority to EP84102243A priority patent/EP0121739B1/en
Priority to DE8484102243T priority patent/DE3472460D1/de
Priority to CA000448715A priority patent/CA1239443A/en
Publication of JPS59168214A publication Critical patent/JPS59168214A/ja
Publication of JPS6252124B2 publication Critical patent/JPS6252124B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/06—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a liquid
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Pathology (AREA)
  • Immunology (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Medicinal Chemistry (AREA)
  • Food Science & Technology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
JP4298083A 1983-03-04 1983-03-14 エンジンオイルの劣化警報装置 Granted JPS59168214A (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP4298083A JPS59168214A (ja) 1983-03-14 1983-03-14 エンジンオイルの劣化警報装置
US06/585,257 US4686857A (en) 1983-03-04 1984-03-01 Method and apparatus for evaluating the performance of dielectric substances
EP84102243A EP0121739B1 (en) 1983-03-04 1984-03-02 Method and apparatus for evaluating the performance of dielectric substances
DE8484102243T DE3472460D1 (en) 1983-03-04 1984-03-02 Method and apparatus for evaluating the performance of dielectric substances
CA000448715A CA1239443A (en) 1983-03-04 1984-03-02 Method and apparatus for evaluating the performance of dielectric substances

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4298083A JPS59168214A (ja) 1983-03-14 1983-03-14 エンジンオイルの劣化警報装置

Publications (2)

Publication Number Publication Date
JPS59168214A JPS59168214A (ja) 1984-09-21
JPS6252124B2 true JPS6252124B2 (enrdf_load_stackoverflow) 1987-11-04

Family

ID=12651178

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4298083A Granted JPS59168214A (ja) 1983-03-04 1983-03-14 エンジンオイルの劣化警報装置

Country Status (1)

Country Link
JP (1) JPS59168214A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPS59168214A (ja) 1984-09-21

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