BR112016007379A8 - Sistema de diagnóstico de anormalidade de sensor de relação ar-combustível - Google Patents

Sistema de diagnóstico de anormalidade de sensor de relação ar-combustível

Info

Publication number
BR112016007379A8
BR112016007379A8 BR112016007379A BR112016007379A BR112016007379A8 BR 112016007379 A8 BR112016007379 A8 BR 112016007379A8 BR 112016007379 A BR112016007379 A BR 112016007379A BR 112016007379 A BR112016007379 A BR 112016007379A BR 112016007379 A8 BR112016007379 A8 BR 112016007379A8
Authority
BR
Brazil
Prior art keywords
fuel ratio
air
ratio sensor
downstream
sensor
Prior art date
Application number
BR112016007379A
Other languages
English (en)
Other versions
BR112016007379A2 (pt
Inventor
Kidokoro Toru
Miyamoto Hiroshi
Iwazaki Yasushi
Suzuki Kenji
Original Assignee
Toyota 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 Toyota Motor Co Ltd filed Critical Toyota Motor Co Ltd
Publication of BR112016007379A2 publication Critical patent/BR112016007379A2/pt
Publication of BR112016007379A8 publication Critical patent/BR112016007379A8/pt

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
    • 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
    • F02D41/1473—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the regulation method
    • F02D41/1475—Regulating the air fuel ratio at a value other than stoichiometry
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2066—Selective catalytic reduction [SCR]
    • 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
    • F02D41/1439—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the position of the sensor
    • F02D41/1441—Plural sensors
    • 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
    • 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
    • F02D41/22—Safety or indicating devices for abnormal conditions
    • F02D41/222—Safety or indicating devices for abnormal conditions relating to the failure of sensors or parameter detection devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

SISTEMA DE DIAGNÓSTICO DE ANORMALIDADE DE SENSOR DE RELAÇÃO AR-COMBUSTÍVEL. A presente invenção refere-se a um sistema de diagnóstico de anormalidade que pode julgar um sensor de relação ar-combustível à jusante como sendo precisamente normal que é fornecido. O sistema de diagnóstico de anormalidade de um sensor da relação ar-combustível 41 é fornecido com um catalisador de purificação de escape 20, um sensor da relação ar-combustível a montante 40 que é fornecido em um lado a montante do catalisador de purificação de escape, um sensor de relação ar-combustível à jusante 41 que é fornecido em um lado à jusante do catalisador de purificação de escape, e um dispositivo de diagnóstico que utiliza as saídas desses sensores de relação ar-combustível como a base para diagnosticar anormalidade do sensor de relação ar-combustível à jusante. O dispositivo de diagnóstico julga que o sensor de relação ar-combustível à jusante é normal quando um contador de tempo que conta o tempo em que a relação de ar-combustível de saída do sensor de relação ar-combustível a montante torna-se uma relação ar-combustível rica, que é mais rica do que a relação ar-combustível estequiométrica e a saída da relação ar-combustível do sensor de relação ar-combustível à jusante torna-se uma relação ar-combustível de referência de julgamento rico que é mais rica do que a relação ar-combustível estequiométrica ou inferior torna-se um valor de julgamento predeterminado, que é maior do que zero ou mais.
BR112016007379A 2013-10-01 2014-09-30 Sistema de diagnóstico de anormalidade de sensor de relação ar-combustível BR112016007379A8 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013206620A JP6090092B2 (ja) 2013-10-01 2013-10-01 空燃比センサの異常診断装置
PCT/JP2014/076644 WO2015050267A1 (en) 2013-10-01 2014-09-30 Abnormality diagnosis system of air-fuel ratio sensor

Publications (2)

Publication Number Publication Date
BR112016007379A2 BR112016007379A2 (pt) 2017-08-01
BR112016007379A8 true BR112016007379A8 (pt) 2022-09-27

Family

ID=51830577

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112016007379A BR112016007379A8 (pt) 2013-10-01 2014-09-30 Sistema de diagnóstico de anormalidade de sensor de relação ar-combustível

Country Status (8)

Country Link
US (1) US10316779B2 (pt)
EP (1) EP3052793B1 (pt)
JP (1) JP6090092B2 (pt)
CN (1) CN105593498B (pt)
AU (1) AU2014330331B2 (pt)
BR (1) BR112016007379A8 (pt)
RU (1) RU2643801C2 (pt)
WO (1) WO2015050267A1 (pt)

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US10690036B1 (en) 2018-12-20 2020-06-23 Denso International America, Inc. Diagnostic test for engine exhaust system
US11813926B2 (en) 2020-08-20 2023-11-14 Denso International America, Inc. Binding agent and olfaction sensor
US11881093B2 (en) 2020-08-20 2024-01-23 Denso International America, Inc. Systems and methods for identifying smoking in vehicles
US11636870B2 (en) 2020-08-20 2023-04-25 Denso International America, Inc. Smoking cessation systems and methods
US11828210B2 (en) 2020-08-20 2023-11-28 Denso International America, Inc. Diagnostic systems and methods of vehicles using olfaction
US12017506B2 (en) 2020-08-20 2024-06-25 Denso International America, Inc. Passenger cabin air control systems and methods
US11932080B2 (en) 2020-08-20 2024-03-19 Denso International America, Inc. Diagnostic and recirculation control systems and methods
US11760169B2 (en) 2020-08-20 2023-09-19 Denso International America, Inc. Particulate control systems and methods for olfaction sensors
US11760170B2 (en) 2020-08-20 2023-09-19 Denso International America, Inc. Olfaction sensor preservation systems and methods

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Also Published As

Publication number Publication date
US10316779B2 (en) 2019-06-11
RU2016111946A (ru) 2017-11-09
JP6090092B2 (ja) 2017-03-08
AU2014330331A1 (en) 2016-02-18
AU2014330331B2 (en) 2016-12-15
BR112016007379A2 (pt) 2017-08-01
CN105593498B (zh) 2018-10-09
RU2643801C2 (ru) 2018-02-06
JP2015071946A (ja) 2015-04-16
CN105593498A (zh) 2016-05-18
EP3052793A1 (en) 2016-08-10
WO2015050267A1 (en) 2015-04-09
US20160281622A1 (en) 2016-09-29
EP3052793B1 (en) 2020-02-26

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B06F Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]
B06U Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]
B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B11B Dismissal acc. art. 36, par 1 of ipl - no reply within 90 days to fullfil the necessary requirements