EP1074718A2 - Méthode pour vérifier la vraisemblance de paramètres provenant du moteur et de capteurs en utilisant une sonde lambda à large bande - Google Patents

Méthode pour vérifier la vraisemblance de paramètres provenant du moteur et de capteurs en utilisant une sonde lambda à large bande Download PDF

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Publication number
EP1074718A2
EP1074718A2 EP00115537A EP00115537A EP1074718A2 EP 1074718 A2 EP1074718 A2 EP 1074718A2 EP 00115537 A EP00115537 A EP 00115537A EP 00115537 A EP00115537 A EP 00115537A EP 1074718 A2 EP1074718 A2 EP 1074718A2
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EP
European Patent Office
Prior art keywords
internal combustion
combustion engine
lambda probe
lambda
control 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
EP00115537A
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German (de)
English (en)
Other versions
EP1074718A3 (fr
EP1074718B1 (fr
Inventor
Christian Hess
Thorsten Rebohl
Hans-Georg Nitzke
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.)
Volkswagen AG
Original Assignee
Volkswagen AG
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 Volkswagen AG filed Critical Volkswagen AG
Publication of EP1074718A2 publication Critical patent/EP1074718A2/fr
Publication of EP1074718A3 publication Critical patent/EP1074718A3/fr
Application granted granted Critical
Publication of EP1074718B1 publication Critical patent/EP1074718B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D41/0047—Controlling exhaust gas recirculation [EGR]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/14—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system
    • F02M26/15—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system in relation to engine exhaust purifying apparatus

Definitions

  • the invention relates to a method for monitoring the function of an exhaust gas duct an internal combustion engine arranged lambda probe with the in the preamble of Claim 1 mentioned features.
  • Exhaust channel at least one lambda probe, in particular a broadband lambda probe, to arrange.
  • an oxygen concentration in an exhaust gas can be detected and a conclusion on the ratio of an oxygen fraction to a fuel fraction take place in the air-fuel mixture supplied to the combustion process.
  • Broadband lambda probes enable measurement of lambda in a range of about 0.7 to ⁇ .
  • the lambda probe Measurement signal for controlling the air-fuel mixture according to the given Requirements for the internal combustion engine used (lambda control).
  • the measurement signal is read into an engine control unit and serves as the basis for Measures that, for example, regulate an injection system or intake air include.
  • Lambda probes of this type are usually also used to monitor in addition the exhaust duct arranged catalysts. Redox reactions take place on the catalysts instead, which leads to a conversion of pollutants contained in the exhaust gas into less environmentally relevant Lead reaction products.
  • the operating mode of the internal combustion engine is based on the Measurement signal of the lambda probe regulated.
  • the measurement signal provided is faulty due to a defect in the lambda probe, this can on the one hand result in the setting of a lead to low-consumption operating mode, and on the other hand one can possibly Reduction of pollutant emissions by means of the catalysts no longer in the necessary dimensions are granted.
  • the invention has for its object to provide a method that a Functional monitoring of the lambda probe allowed and thus possible rectification Defects in the lambda probe enabled.
  • a predeterminable number of Control values first of all to a correlation calculation, in particular a cross-correlation subject.
  • the correlation calculation then delivers a correlated control value.
  • a maintenance signal is generated in a preferred manner (on-board diagnosis). Based on the Maintenance signals can then provide appropriate information to a vehicle driver the maintenance personnel must carry out a necessary maintenance measure be proposed.
  • the diagnosis period is such choose that he immediately a load change or a change in speed of the Internal combustion engine connects, since there are particularly significant measurement signals. It is therefore not necessary to use special functions for monitoring the lambda probe Let signal patterns run and thus the normal operation of the Interrupt internal combustion engine.
  • Parameters such as one, flow into the model for the internal combustion engine Intake air mass, a fuel mass and the speed.
  • Intake air mass a fuel mass and the speed.
  • FIG. 10 An arrangement 10 of an internal combustion engine 12 is shown in FIG a catalytic converter 16 arranged in an exhaust gas duct 14 and two lambda probes 18, 20 includes.
  • a temperature sensor 22 is additionally arranged downstream of the catalytic converter 16, with which an exhaust gas temperature can be detected.
  • the catalyst 16 serves one Conversion of pollutants contained in the exhaust gas of the internal combustion engine 12.
  • a ratio of an oxygen fraction to a fuel fraction in one to be burned Air-fuel mixture provides a lambda value.
  • the lambda probe 18 can be an oxygen concentration immediately behind the internal combustion engine 12 detect, the oxygen concentration clearly assigned to a lambda value can be.
  • a conversion rate of the catalytic converter 16 can be determined using a monitor the signal provided by the lambda probe 20 in a known manner.
  • the Lambda value is continuously recorded according to the exemplary embodiment, that is, the Lambda probes 18, 20 are so-called broadband lambda probes.
  • a range of measurements for Broadband lambda probes range from approximately 0.7 to ⁇ . How it works such probes is known, so that in the context of the present description should not be discussed in more detail.
  • the measurement signals detected by the sensors 18, 20, 22 are fed into an engine control unit 24 read, evaluated and to control an operating mode of the Internal combustion engine 12 used.
  • the internal combustion engine 12 is a means assigned, for example, an injection system 26 or an exhaust gas recirculation include.
  • the exhaust gas recirculation can reduce the volume flow intake air by means of a throttle valve 28 and by simultaneous supply low-oxygen exhaust gas take place via an exhaust gas reflux valve 30. In this way it is Oxygen content of a via an intake pipe 32 of the internal combustion engine 12 provided intake air mass can be specified.
  • Exhaust gas turbochargers of supercharged engines have at least one lambda probe behind them Turbine in the exhaust gas.
  • FIG. 2 shows a block diagram for function monitoring of the lambda probes 18, 20.
  • a step S1 in addition to that by the lambda probes 18, 20 Provided measurement signal determines a target signal.
  • a model for the internal combustion engine is used for this 12.
  • the model includes parameters such as the intake air mass, a injected fuel mass or a speed of the internal combustion engine 12. It is also conceivable to use other sizes, for example in the engine control unit 24 are provided to be used to optimize the model.
  • the operating mode of the internal combustion engine 12 must be used for function monitoring can not be controlled according to a signal pattern, but any Operating points can be used for monitoring. It has proven to be advantageous a diagnosis period immediately after a load change or a change in the Let the speed of the internal combustion engine 12 begin.
  • a ratio of the measurement signal to the target signal provides a control value (step S2).
  • the control value KW or the correlated control value KW k is then compared in a step S3 with a predefinable limit value GW.
  • the limit value GW can also be determined using the model for the internal combustion engine 12. If the control value KW or the correlated control value KW k is below the limit value GW, a new measuring cycle of the function monitoring can follow, starting with step S1. However, if the control value KW or the correlated control value KW k exceeds the limit value GW, a maintenance signal is generated in a step S4. The maintenance signal then serves, for example in an on-board diagnosis, to inform a vehicle driver. Furthermore, the maintenance signal can be used to provide the maintenance personnel with appropriate instructions.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Testing Of Engines (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
EP00115537A 1999-08-03 2000-07-19 Méthode pour vérifier la vraisemblance de paramètres provenant du moteur et de capteurs en utilisant une sonde lambda à large bande Expired - Lifetime EP1074718B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19936355 1999-08-03
DE19936355A DE19936355A1 (de) 1999-08-03 1999-08-03 Verfahren zur Plausibilitätsprüfung von Motorgrößen und Sensorgrößen unter Verwendung einer stetigen Lambda-Sonde

Publications (3)

Publication Number Publication Date
EP1074718A2 true EP1074718A2 (fr) 2001-02-07
EP1074718A3 EP1074718A3 (fr) 2001-09-26
EP1074718B1 EP1074718B1 (fr) 2004-11-10

Family

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Family Applications (1)

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EP00115537A Expired - Lifetime EP1074718B1 (fr) 1999-08-03 2000-07-19 Méthode pour vérifier la vraisemblance de paramètres provenant du moteur et de capteurs en utilisant une sonde lambda à large bande

Country Status (3)

Country Link
EP (1) EP1074718B1 (fr)
AT (1) ATE282144T1 (fr)
DE (2) DE19936355A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004033325B4 (de) * 2003-07-10 2006-05-24 Honda Motor Co., Ltd. Diagnosevorrichtung für einen Abgas-Sensor
EP1746276A2 (fr) 2005-07-22 2007-01-24 Robert Bosch Gmbh Surveillance des valeurs limites d'émission
WO2009011191A1 (fr) * 2007-07-19 2009-01-22 Toyota Jidosha Kabushiki Kaisha Dispositif de détection d'anomalie pour moteur à combustion interne et appareil de commande du rapport air/carburant pour moteur à combustion interne
WO2011018317A1 (fr) 2009-08-10 2011-02-17 Robert Bosch Gmbh Procédé et dispositif de diagnostic dynamique d’une sonde de gaz d’échappement
WO2013087262A1 (fr) * 2011-12-12 2013-06-20 Robert Bosch Gmbh Procédé et dispositif permettant de surveiller la dynamique des capteurs de gaz
WO2013110385A1 (fr) * 2012-01-25 2013-08-01 Robert Bosch Gmbh Procédé et unité de commande permettant de déterminer un temps mort d'un capteur de gaz d'échappement d'un moteur à combustion interne
CN103967567A (zh) * 2013-02-04 2014-08-06 罗伯特·博世有限公司 一种用于运行内燃机废气系统中进气量探测器装置的方法
WO2022084067A1 (fr) * 2020-10-23 2022-04-28 Vitesco Technologies GmbH Calculateur pour diagnostic d'encrassement d'une sonde pour vehicule

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10029633A1 (de) * 2000-04-07 2001-10-11 Volkswagen Ag Mehrflutige Abgasanlage eines Mehrzylindermotors und Verfahren zur Regelung eines Luft-Kraftstoff-Verhältnisses
DE10111586A1 (de) * 2001-03-10 2002-09-12 Volkswagen Ag Verfahren zum Betrieb von Brennkraftmaschinen
DE10128969C1 (de) * 2001-06-15 2002-12-12 Audi Ag Verfahren zur Diagnose einer Führungssonde
DE10250219A1 (de) * 2002-10-23 2004-05-06 Volkswagen Ag Regler und Verfahren zur Regelung eines in einem Abgaskanal einer Verbrennungskraftmaschine angeordneten NOx-Sensors
DE10307342B4 (de) * 2003-02-21 2005-08-11 Volkswagen Ag Vorrichtung und Verfahren zur modellbasierten On-Board-Diagnose
DE102005016075B4 (de) * 2005-04-08 2007-04-12 Audi Ag Verfahren zur Diagnose einer dem Abgaskatalysator einer Brennkraftmaschine zugeordneten Lambdasonde
JP4816773B2 (ja) * 2009-07-16 2011-11-16 株式会社デンソー 排気成分濃度センサの応答性検出装置

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Publication number Priority date Publication date Assignee Title
US5550762A (en) * 1993-12-20 1996-08-27 Doll; John A. Diagnostic system for electronic automotive system
DE19612212B4 (de) * 1995-03-31 2005-12-08 Denso Corp., Kariya Diagnosevorrichtung für einen Luft/Brennstoffverhältnis-Sensor
GB2301901B (en) * 1995-06-05 1999-04-07 Nippon Denso Co Apparatus and method for diagnosing degradation or malfunction of oxygen sensor
JP3743577B2 (ja) * 1995-09-25 2006-02-08 本田技研工業株式会社 内燃エンジンの空燃比制御装置
DE19606652B4 (de) * 1996-02-23 2004-02-12 Robert Bosch Gmbh Verfahren der Einstellung des Kraftstoff-Luftverhältnisses für eine Brennkraftmaschine mit nachgeschaltetem Katalysator
DE19844994C2 (de) * 1998-09-30 2002-01-17 Siemens Ag Verfahren zur Diagnose einer stetigen Lambdasonde

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004033325B4 (de) * 2003-07-10 2006-05-24 Honda Motor Co., Ltd. Diagnosevorrichtung für einen Abgas-Sensor
EP1746276A2 (fr) 2005-07-22 2007-01-24 Robert Bosch Gmbh Surveillance des valeurs limites d'émission
EP1746276A3 (fr) * 2005-07-22 2013-05-22 Robert Bosch Gmbh Surveillance des valeurs limites d'émission
WO2009011191A1 (fr) * 2007-07-19 2009-01-22 Toyota Jidosha Kabushiki Kaisha Dispositif de détection d'anomalie pour moteur à combustion interne et appareil de commande du rapport air/carburant pour moteur à combustion interne
CN101755115A (zh) * 2007-07-19 2010-06-23 丰田自动车株式会社 用于内燃机的异常检测装置及用于内燃机的空燃比控制设备
US8050852B2 (en) 2007-07-19 2011-11-01 Toyota Jidosha Kabushiki Kaisha Abnormality detection device for internal combustion engine and air/fuel ratio control apparatus for internal combustion engine
CN101755115B (zh) * 2007-07-19 2013-04-10 丰田自动车株式会社 用于内燃机的异常检测装置及用于内燃机的空燃比控制设备
US8646324B2 (en) 2009-08-10 2014-02-11 Robert Bosch Gmbh Method and device for dynamically diagnosing an exhaust gas probe
WO2011018317A1 (fr) 2009-08-10 2011-02-17 Robert Bosch Gmbh Procédé et dispositif de diagnostic dynamique d’une sonde de gaz d’échappement
CN102472186A (zh) * 2009-08-10 2012-05-23 罗伯特·博世有限公司 用于对废气探测仪进行动态诊断的方法和装置
US20120222474A1 (en) * 2009-08-10 2012-09-06 Robert Bosch Gmbh Method and device for dynamically diagnosing an exhaust gas probe
CN102472186B (zh) * 2009-08-10 2015-06-17 罗伯特·博世有限公司 用于对废气探测仪进行动态诊断的方法和装置
WO2013087262A1 (fr) * 2011-12-12 2013-06-20 Robert Bosch Gmbh Procédé et dispositif permettant de surveiller la dynamique des capteurs de gaz
US10060894B2 (en) 2011-12-12 2018-08-28 Robert Bosch Gmbh Method and device for dynamic monitoring of gas sensors
WO2013110385A1 (fr) * 2012-01-25 2013-08-01 Robert Bosch Gmbh Procédé et unité de commande permettant de déterminer un temps mort d'un capteur de gaz d'échappement d'un moteur à combustion interne
US9518893B2 (en) 2012-01-25 2016-12-13 Robert Bosch Gmbh Method and control unit for determining a dead time of an exhaust gas sensor of an internal combustion engine
CN103967567A (zh) * 2013-02-04 2014-08-06 罗伯特·博世有限公司 一种用于运行内燃机废气系统中进气量探测器装置的方法
CN103967567B (zh) * 2013-02-04 2018-03-30 罗伯特·博世有限公司 一种用于运行内燃机废气系统中进气量探测器装置的方法
WO2022084067A1 (fr) * 2020-10-23 2022-04-28 Vitesco Technologies GmbH Calculateur pour diagnostic d'encrassement d'une sonde pour vehicule
FR3115597A1 (fr) * 2020-10-23 2022-04-29 Vitesco Technologies Calculateur pour diagnostic d’encrassement d’une sonde pour véhicule
CN116490676A (zh) * 2020-10-23 2023-07-25 纬湃科技有限责任公司 用于载具的探测器堵塞诊断的计算机
US12146430B2 (en) 2020-10-23 2024-11-19 Vitesco Technologies GmbH Computer for diagnosing clogging of a probe for a vehicle

Also Published As

Publication number Publication date
DE50008573D1 (de) 2004-12-16
DE19936355A1 (de) 2001-02-08
EP1074718A3 (fr) 2001-09-26
EP1074718B1 (fr) 2004-11-10
ATE282144T1 (de) 2004-11-15

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