JPS573036A - Oxygen concentration detector - Google Patents

Oxygen concentration detector

Info

Publication number
JPS573036A
JPS573036A JP7678380A JP7678380A JPS573036A JP S573036 A JPS573036 A JP S573036A JP 7678380 A JP7678380 A JP 7678380A JP 7678380 A JP7678380 A JP 7678380A JP S573036 A JPS573036 A JP S573036A
Authority
JP
Japan
Prior art keywords
sensor
voltage
resistance
oxygen sensor
deterioration
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.)
Pending
Application number
JP7678380A
Other languages
Japanese (ja)
Inventor
Noboru Matsui
Aogu Yoshida
Yutaka Ooya
Koji Sakano
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 JP7678380A priority Critical patent/JPS573036A/en
Publication of JPS573036A publication Critical patent/JPS573036A/en
Pending 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
    • G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)

Abstract

PURPOSE:To prevent the deterioration and the decrease in sensitivity by using a material such as sintered titanium oxide body wherein electrical conduction is accomplished partly by ion conduction as an oxygen sensor, and setting the voltage acting upon this oxygen sensor at less than the specific value. CONSTITUTION:A DC power source 1 (for example, 5V), an oxygen sensor 2 formed with a platinum electrode on a porous sintered titania disc of about 1-5mm. diameters and 1-3mm. thicknesses and a reference resistance 3 having a 10KOMEGA resistance value are connected in series, thereby forming a closed circuit. Further, a Zener diode 4 of 1V Zener voltage is connected in parallel with the sensor 2. If this oxygen sensor 2 is provided in the exhaust gas of an internal combustion engine of fuel rich, the resistance of the sensor 2 is several tens OMEGA and voltage of <=0.1V is generated in the sensor 2. Next, if it is provided in the exhaust gas of fuel lean, the resistance of the sensor 2 rises to >=100KOMEGA, but the voltage of the sensor 2 is kept at 1V by the Zener diode 4, whereby the deterioration occuring in the application of high voltage is prevented.
JP7678380A 1980-06-06 1980-06-06 Oxygen concentration detector Pending JPS573036A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7678380A JPS573036A (en) 1980-06-06 1980-06-06 Oxygen concentration detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7678380A JPS573036A (en) 1980-06-06 1980-06-06 Oxygen concentration detector

Publications (1)

Publication Number Publication Date
JPS573036A true JPS573036A (en) 1982-01-08

Family

ID=13615193

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7678380A Pending JPS573036A (en) 1980-06-06 1980-06-06 Oxygen concentration detector

Country Status (1)

Country Link
JP (1) JPS573036A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS607017U (en) * 1983-06-28 1985-01-18 新コスモス電機株式会社 sensor circuit
JPS6080751A (en) * 1983-10-12 1985-05-08 Hitachi Ltd Operating circuit of organic polymer type humidity sensor
JPS61269054A (en) * 1985-05-23 1986-11-28 Nippon Mining Co Ltd Dew condensation preventing sensor
KR100441678B1 (en) * 2001-07-19 2004-07-27 주식회사 진산물산 Device and method for preventing wear of gas sensors
JP2010223893A (en) * 2009-03-25 2010-10-07 Fuji Electric Systems Co Ltd Thin-film gas sensor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS607017U (en) * 1983-06-28 1985-01-18 新コスモス電機株式会社 sensor circuit
JPH0422287Y2 (en) * 1983-06-28 1992-05-21
JPS6080751A (en) * 1983-10-12 1985-05-08 Hitachi Ltd Operating circuit of organic polymer type humidity sensor
JPS61269054A (en) * 1985-05-23 1986-11-28 Nippon Mining Co Ltd Dew condensation preventing sensor
KR100441678B1 (en) * 2001-07-19 2004-07-27 주식회사 진산물산 Device and method for preventing wear of gas sensors
JP2010223893A (en) * 2009-03-25 2010-10-07 Fuji Electric Systems Co Ltd Thin-film gas sensor

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