EP2530288A3 - Activation determining system for oxygen sensor - Google Patents

Activation determining system for oxygen sensor Download PDF

Info

Publication number
EP2530288A3
EP2530288A3 EP11185695.1A EP11185695A EP2530288A3 EP 2530288 A3 EP2530288 A3 EP 2530288A3 EP 11185695 A EP11185695 A EP 11185695A EP 2530288 A3 EP2530288 A3 EP 2530288A3
Authority
EP
European Patent Office
Prior art keywords
oxygen sensor
value
activation determining
output
convergence 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.)
Granted
Application number
EP11185695.1A
Other languages
German (de)
French (fr)
Other versions
EP2530288A2 (en
EP2530288B1 (en
Inventor
Hirotaka Kihara
Yuuichirou Sawada
Michihisa Nakamura
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.)
Yamaha Motor Co Ltd
Original Assignee
Yamaha 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
Priority to JP2011122679A priority Critical patent/JP2012251795A/en
Application filed by Yamaha Motor Co Ltd filed Critical Yamaha Motor Co Ltd
Publication of EP2530288A2 publication Critical patent/EP2530288A2/en
Publication of EP2530288A3 publication Critical patent/EP2530288A3/en
Application granted granted Critical
Publication of EP2530288B1 publication Critical patent/EP2530288B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D41/00Electrical control of supply of combustible mixture or its constituents
    • F02D41/02Circuit arrangements for generating control signals
    • F02D41/14Introducing closed-loop corrections
    • F02D41/1438Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1486Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor with correction for particular operating conditions
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D41/00Electrical control of supply of combustible mixture or its constituents
    • F02D41/24Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
    • F02D41/26Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
    • F02D41/28Interface circuits
    • F02D2041/281Interface circuits between sensors and control unit
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D41/00Electrical control of supply of combustible mixture or its constituents
    • F02D41/02Circuit arrangements for generating control signals
    • F02D41/04Introducing corrections for particular operating conditions
    • F02D41/12Introducing corrections for particular operating conditions for deceleration
    • F02D41/123Introducing corrections for particular operating conditions for deceleration the fuel injection being cut-off
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D41/00Electrical control of supply of combustible mixture or its constituents
    • F02D41/02Circuit arrangements for generating control signals
    • F02D41/14Introducing closed-loop corrections
    • F02D41/1438Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1444Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
    • F02D41/1454Introducing 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D41/00Electrical control of supply of combustible mixture or its constituents
    • F02D41/02Circuit arrangements for generating control signals
    • F02D41/14Introducing closed-loop corrections
    • F02D41/1438Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1444Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
    • F02D41/1454Introducing 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
    • F02D41/1456Introducing 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

Abstract

In an activation determining system, a signal processing circuit is configured to output a signal converging to a predetermined convergence value VP when the oxygen sensor is maintained in the deactivated state. A deactivation determining section is configured to determine that the oxygen sensor is in the deactivated state when an output value Vd (n) from the signal processing circuit varies towards the convergence value VP for a predetermined period of time or longer during execution of fuel supply cut-off or when the output value Vd(n) varies towards the convergence value VP by a predetermined amount or greater during execution of the fuel supply cut-off.
EP11185695.1A 2011-05-31 2011-10-19 Activation determining system for oxygen sensor Active EP2530288B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2011122679A JP2012251795A (en) 2011-05-31 2011-05-31 Activity determination system of oxygen sensor

Publications (3)

Publication Number Publication Date
EP2530288A2 EP2530288A2 (en) 2012-12-05
EP2530288A3 true EP2530288A3 (en) 2014-10-29
EP2530288B1 EP2530288B1 (en) 2015-12-16

Family

ID=44799893

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11185695.1A Active EP2530288B1 (en) 2011-05-31 2011-10-19 Activation determining system for oxygen sensor

Country Status (4)

Country Link
EP (1) EP2530288B1 (en)
JP (1) JP2012251795A (en)
ES (1) ES2557603T3 (en)
TW (1) TWI458971B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015129442A (en) * 2014-01-06 2015-07-16 ヤマハ発動機株式会社 Saddle ride vehicle
JP6112619B2 (en) * 2014-09-18 2017-04-12 本田技研工業株式会社 O2 sensor failure diagnosis device
JP6379000B2 (en) * 2014-10-01 2018-08-22 日本特殊陶業株式会社 Gas sensor system

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5946350A (en) * 1982-09-09 1984-03-15 Toyota Motor Corp Method of controlling air-fuel ratio of internal- combustion engine
US4528957A (en) * 1983-05-28 1985-07-16 Robert Bosch Gmbh Method and apparatus for controlling the air-fuel ratio of the operating mixture of an internal combustion engine
JPS60212650A (en) * 1984-04-04 1985-10-24 Toyota Motor Corp Electronic control type fuel injector
US4970858A (en) * 1988-03-30 1990-11-20 Toyota Jidosha Kabushiki Kaisha Air-fuel ratio feedback system having improved activation determination for air-fuel ratio sensor
US5058556A (en) * 1990-01-23 1991-10-22 Toyota Jidosha Kabushiki Kaisha Device for determining activated condition of an oxygen sensor
US5392643A (en) * 1993-11-22 1995-02-28 Chrysler Corporation Oxygen heater sensor diagnostic routine
EP1637719A2 (en) * 2004-09-17 2006-03-22 Hitachi, Ltd. Exhaust gas sensor activation judgement and air fuel ratio control system and method
JP2010025077A (en) * 2008-07-24 2010-02-04 Mikuni Corp Device and method for air-fuel ratio control of internal combustion engine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004340859A (en) * 2003-05-19 2004-12-02 Hitachi Unisia Automotive Ltd Method of determining activation of oxygen sensor
CN100462535C (en) * 2004-09-17 2009-02-18 株式会社日立制作所 Exhaust gas sensor activation judgment and air fuel ratio control system/method
JP4477481B2 (en) * 2004-12-20 2010-06-09 本田技研工業株式会社 Oxygen concentration sensor mounting structure

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5946350A (en) * 1982-09-09 1984-03-15 Toyota Motor Corp Method of controlling air-fuel ratio of internal- combustion engine
US4528957A (en) * 1983-05-28 1985-07-16 Robert Bosch Gmbh Method and apparatus for controlling the air-fuel ratio of the operating mixture of an internal combustion engine
JPS60212650A (en) * 1984-04-04 1985-10-24 Toyota Motor Corp Electronic control type fuel injector
US4970858A (en) * 1988-03-30 1990-11-20 Toyota Jidosha Kabushiki Kaisha Air-fuel ratio feedback system having improved activation determination for air-fuel ratio sensor
US5058556A (en) * 1990-01-23 1991-10-22 Toyota Jidosha Kabushiki Kaisha Device for determining activated condition of an oxygen sensor
US5392643A (en) * 1993-11-22 1995-02-28 Chrysler Corporation Oxygen heater sensor diagnostic routine
EP1637719A2 (en) * 2004-09-17 2006-03-22 Hitachi, Ltd. Exhaust gas sensor activation judgement and air fuel ratio control system and method
JP2010025077A (en) * 2008-07-24 2010-02-04 Mikuni Corp Device and method for air-fuel ratio control of internal combustion engine

Also Published As

Publication number Publication date
TW201248142A (en) 2012-12-01
JP2012251795A (en) 2012-12-20
EP2530288A2 (en) 2012-12-05
ES2557603T3 (en) 2016-01-27
EP2530288B1 (en) 2015-12-16
TWI458971B (en) 2014-11-01

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