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DE69708786D1 - Vorrichtung zum Erfassen der Verschlechterung eines Luft-Kraftstoff-Verhältnis-Sensors - Google Patents

Vorrichtung zum Erfassen der Verschlechterung eines Luft-Kraftstoff-Verhältnis-Sensors

Info

Publication number
DE69708786D1
DE69708786D1 DE69708786T DE69708786T DE69708786D1 DE 69708786 D1 DE69708786 D1 DE 69708786D1 DE 69708786 T DE69708786 T DE 69708786T DE 69708786 T DE69708786 T DE 69708786T DE 69708786 D1 DE69708786 D1 DE 69708786D1
Authority
DE
Germany
Prior art keywords
deterioration
detecting
air
fuel ratio
ratio sensor
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 - Lifetime
Application number
DE69708786T
Other languages
English (en)
Other versions
DE69708786T2 (de
Inventor
Kazunori Katoh
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 Motor Corp
Original Assignee
Toyota Motor Corp
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 Motor Corp filed Critical Toyota Motor Corp
Publication of DE69708786D1 publication Critical patent/DE69708786D1/de
Application granted granted Critical
Publication of DE69708786T2 publication Critical patent/DE69708786T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1493—Details
    • F02D41/1495—Detection of abnormalities in the air/fuel ratio feedback system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1477—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the regulation circuit or part of it,(e.g. comparator, PI regulator, output)
    • F02D41/1482—Integrator, i.e. variable slope
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
    • F02D41/1454—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio
    • F02D41/1456—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio with sensor output signal being linear or quasi-linear with the concentration of oxygen

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
DE69708786T 1996-08-09 1997-08-07 Vorrichtung zum Erfassen der Verschlechterung eines Luft-Kraftstoff-Verhältnis-Sensors Expired - Lifetime DE69708786T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21178596A JP3607962B2 (ja) 1996-08-09 1996-08-09 空燃比センサの劣化判定装置

Publications (2)

Publication Number Publication Date
DE69708786D1 true DE69708786D1 (de) 2002-01-17
DE69708786T2 DE69708786T2 (de) 2002-06-13

Family

ID=16611572

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69708786T Expired - Lifetime DE69708786T2 (de) 1996-08-09 1997-08-07 Vorrichtung zum Erfassen der Verschlechterung eines Luft-Kraftstoff-Verhältnis-Sensors

Country Status (4)

Country Link
US (1) US5901691A (de)
EP (1) EP0824187B1 (de)
JP (1) JP3607962B2 (de)
DE (1) DE69708786T2 (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19838334B4 (de) * 1998-08-24 2012-03-15 Robert Bosch Gmbh Diagnoseeinrichtung für eine potentiometrische, elektrisch beheizte Abgassonde zur Regelung von Verbrennungsprozessen
US6227033B1 (en) * 1999-03-11 2001-05-08 Delphi Technologies, Inc. Auto-calibration method for a wide range exhaust gas oxygen sensor
JP2003254129A (ja) * 2002-02-28 2003-09-10 Nissan Motor Co Ltd 排気浄化装置
JP3988609B2 (ja) * 2002-10-07 2007-10-10 株式会社デンソー 酸素センサの異常検出装置
EP1873604B1 (de) * 2005-04-20 2013-09-04 Mitsubishi Electric Corporation Datensammeleinrichtung und gateway-einrichtung
DE102005047350A1 (de) * 2005-10-04 2007-04-05 Robert Bosch Gmbh Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine
JP2007162565A (ja) * 2005-12-14 2007-06-28 Toyota Motor Corp 内燃機関の空燃比制御装置
JP4802116B2 (ja) * 2007-02-21 2011-10-26 日本特殊陶業株式会社 ガスセンサの異常診断方法、ガスセンサの異常診断装置
JP4700079B2 (ja) * 2008-05-09 2011-06-15 本田技研工業株式会社 気筒間の空燃比の不均衡を判断するための装置
JP4951612B2 (ja) * 2008-12-05 2012-06-13 日立オートモティブシステムズ株式会社 内燃機関の診断装置および制御装置
JP5401590B2 (ja) * 2012-09-24 2014-01-29 日立オートモティブシステムズ株式会社 内燃機関の診断装置および制御装置
JP5737261B2 (ja) 2012-10-16 2015-06-17 トヨタ自動車株式会社 車両
CN105026922B (zh) * 2014-02-14 2018-04-24 罗斯蒙特分析公司 固态的气体检测传感器的诊断
JP6998416B2 (ja) * 2020-03-30 2022-01-18 本田技研工業株式会社 空燃比センサの劣化判定装置

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62247148A (ja) * 1986-04-18 1987-10-28 Mitsubishi Electric Corp 空燃比センサの異常検知装置
US4947818A (en) * 1988-04-28 1990-08-14 Toyota Jidosha Kabushiki Kaisha Internal combustion engine with device for warning of malfunction in an air-fuel ratio control system
US5209206A (en) * 1990-07-10 1993-05-11 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Air-fuel ratio control system
JPH0599043A (ja) * 1991-10-11 1993-04-20 Mitsubishi Motors Corp 空燃比センシングシステムの故障判定方法
JP2757625B2 (ja) * 1991-10-21 1998-05-25 日産自動車株式会社 空燃比センサの劣化判定装置
JP3197654B2 (ja) * 1993-01-21 2001-08-13 本田技研工業株式会社 内燃エンジンの空燃比センサ劣化検出装置
JP2869911B2 (ja) * 1993-04-15 1999-03-10 本田技研工業株式会社 内燃エンジンの酸素センサ劣化検出装置
JP2684011B2 (ja) * 1994-02-04 1997-12-03 本田技研工業株式会社 内燃機関の異常判定装置
DE19612212B4 (de) * 1995-03-31 2005-12-08 Denso Corp., Kariya Diagnosevorrichtung für einen Luft/Brennstoffverhältnis-Sensor
US5724952A (en) * 1995-06-09 1998-03-10 Honda Giken Kogyo Kabushiki Kaisha Air-fuel ratio control system for internal combustion engines
KR0179491B1 (ko) * 1996-04-24 1999-03-20 김영귀 자동차 엔진의 피드백시스템용 산소센서의 불활성판정장치
US5769063A (en) * 1996-06-05 1998-06-23 Toyota Jidosha Kabushiki Kaisha Malfunction detecting apparatus for air-fuel ratio sensor

Also Published As

Publication number Publication date
EP0824187B1 (de) 2001-12-05
JP3607962B2 (ja) 2005-01-05
EP0824187A2 (de) 1998-02-18
JPH1054285A (ja) 1998-02-24
DE69708786T2 (de) 2002-06-13
US5901691A (en) 1999-05-11
EP0824187A3 (de) 1999-08-18

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8320 Willingness to grant licences declared (paragraph 23)