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JPS57124248A - Valuation apparatus of oxygen sensor capacity - Google Patents

Valuation apparatus of oxygen sensor capacity

Info

Publication number
JPS57124248A
JPS57124248A JP56008954A JP895481A JPS57124248A JP S57124248 A JPS57124248 A JP S57124248A JP 56008954 A JP56008954 A JP 56008954A JP 895481 A JP895481 A JP 895481A JP S57124248 A JPS57124248 A JP S57124248A
Authority
JP
Japan
Prior art keywords
oxygen sensor
fuel
air
fuel ratio
ratio
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
JP56008954A
Other languages
Japanese (ja)
Inventor
Takeshi Kitahara
Kimitake Sone
Kenji Okamura
Hatsuo Nagaishi
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.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co Ltd
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 Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP56008954A priority Critical patent/JPS57124248A/en
Publication of JPS57124248A publication Critical patent/JPS57124248A/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
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/416—Systems
    • G01N27/417—Systems using cells, i.e. more than one cell and probes with solid electrolytes
    • G01N27/4175—Calibrating or checking the analyser

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Molecular Biology (AREA)
  • General Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Measuring Oxygen Concentration In Cells (AREA)

Abstract

PURPOSE:To detect the deviation of a controlled air-fuel ratio of an oxygen sensor from a point of theoretical air-fuel ratio, by calculating a ratio of the time between peaks of output of the oxygen sensor and its period at the time of varying the air-fuel ratio of a combustion gas generator periodically. CONSTITUTION:A chopping wave generator 10 is used as an air-fuel ratio variation signal generator and a chopping waveform voltage VT of the generator 10 is converted into a fuel jetting quantity signal by a fuel jetting quantity controller 8 to control a fuel jetting valve 4. The air-fuel ratio of mixed gas supplied to an engine 1 is varied to the chopping waveform and the concentration of oxygen in combustion gas is sensed by an oxygen sensor 6 provided in a waste gas manifold 5. The output signal of the sensor 6 is sent to a data processor 11 and the ratio t/T between one period T of the chopping wave showing a periodical variation of the fuel jetting quantity and a time (t) of one period of a standard value (c) or more of the output voltage of the oxygen sensor is calculated.
JP56008954A 1981-01-26 1981-01-26 Valuation apparatus of oxygen sensor capacity Pending JPS57124248A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56008954A JPS57124248A (en) 1981-01-26 1981-01-26 Valuation apparatus of oxygen sensor capacity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56008954A JPS57124248A (en) 1981-01-26 1981-01-26 Valuation apparatus of oxygen sensor capacity

Publications (1)

Publication Number Publication Date
JPS57124248A true JPS57124248A (en) 1982-08-03

Family

ID=11707058

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56008954A Pending JPS57124248A (en) 1981-01-26 1981-01-26 Valuation apparatus of oxygen sensor capacity

Country Status (1)

Country Link
JP (1) JPS57124248A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5648601A (en) * 1994-11-14 1997-07-15 Toyota Jidosha Kabushiki Kaisha Apparatus for analyzing air/fuel ratio sensor characteristics

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5648601A (en) * 1994-11-14 1997-07-15 Toyota Jidosha Kabushiki Kaisha Apparatus for analyzing air/fuel ratio sensor characteristics

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