EP1336728A3 - Method and device for regulating the air/fuel ratio of an internal combustion engine - Google Patents

Method and device for regulating the air/fuel ratio of an internal combustion engine Download PDF

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Publication number
EP1336728A3
EP1336728A3 EP02020196A EP02020196A EP1336728A3 EP 1336728 A3 EP1336728 A3 EP 1336728A3 EP 02020196 A EP02020196 A EP 02020196A EP 02020196 A EP02020196 A EP 02020196A EP 1336728 A3 EP1336728 A3 EP 1336728A3
Authority
EP
European Patent Office
Prior art keywords
oxygen
air
excess
catalyst volume
combustion process
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
EP02020196A
Other languages
German (de)
French (fr)
Other versions
EP1336728B1 (en
EP1336728A2 (en
Inventor
Eberhard Schnaibel
Kersen Wehmeier
Klaus Hirschmann
Richard Hotzel
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1336728A2 publication Critical patent/EP1336728A2/en
Publication of EP1336728A3 publication Critical patent/EP1336728A3/en
Application granted granted Critical
Publication of EP1336728B1 publication Critical patent/EP1336728B1/en
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
    • F02D41/021—Introducing corrections for particular conditions exterior to the engine
    • F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
    • F02D41/0295—Control according to the amount of oxygen that is stored on the exhaust gas treating apparatus
    • 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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
    • 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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
    • F01N13/0097—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series the purifying devices are arranged in a single housing
    • 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
    • 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
    • F01N2430/00—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics
    • F01N2430/06—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics by varying fuel-air ratio, e.g. by enriching fuel-air mixture
    • 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
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/16—Oxygen
    • 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
    • F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
    • F02D2041/1413—Controller structures or design
    • F02D2041/1418—Several control loops, either as alternatives or simultaneous
    • 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
    • F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
    • F02D2041/1413—Controller structures or design
    • F02D2041/1422—Variable gain or coefficients
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2250/00—Engine control related to specific problems or objectives
    • F02D2250/36—Control for minimising NOx emissions
    • 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

Abstract

Verfahren zur Regelung des Kraftstoff/Luft-Verhältnisses eines Verbrennungsprozesses, der abwechselnd mit Luftüberschuß und Luftmangel betrieben wird, und mit wenigstens einem Katalysatorvolumen im Abgas des Verbrennungsprozesses, das bei Sauerstoffüberschuß im Abgas Sauerstoff speichert und diesen bei Sauerstoffmangel abgibt bei welchem Verfahren die bei Luftüberschuß erfolgenden Sauerstoffeinträge in das Katalysatorvolumen und die bei Luftmangel erfolgenden Sauerstoffausträge aus dem Katalysatorvolumen bestimmt werden und bei dem das Kraftstoff/Luftverhältnis in einem ersten Regelkreis so geregelt wird, dass die Summe der in einem vorbestimmten Intervall bestimmten Sauerstoffeinträge und Sauerstoffausträge einen vorbestimmten Wert annimmt, dadurch gekennzeichnet, dass der Verbrennungsprozeß jeweils mindestens solange mit Sauerstoffüberschuß oder Sauerstoffmangel betrieben wird, bis dieser an einer sauerstoffempfindlichen Nernstsonde hinter dem Katalysatorvolumen auftritt.

Figure imgaf001
A method for controlling the fuel / air ratio of a combustion process operated alternately with excess air and air deficiency, and with at least one catalyst volume in the exhaust gas of the combustion process, which stores oxygen at excess oxygen in the exhaust gas and releases it in an oxygen deficiency in which process in excess of air Oxygen inputs are determined in the catalyst volume and taking place in the absence of air oxygen emissions from the catalyst volume and in which the fuel / air ratio is controlled in a first control loop so that the sum of the determined at a predetermined interval oxygen inputs and Sauerstoffausträge assumes a predetermined value, characterized that the combustion process is operated in each case at least as long with oxygen excess or lack of oxygen until it occurs on an oxygen-sensitive Nernst probe behind the catalyst volume tt.
Figure imgaf001
EP02020196A 2002-02-13 2002-09-10 Method and device for regulating the air/fuel ratio of an internal combustion engine Expired - Lifetime EP1336728B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10205817A DE10205817A1 (en) 2002-02-13 2002-02-13 Method and device for regulating the fuel / air ratio of a combustion process
DE10205817 2002-02-13

Publications (3)

Publication Number Publication Date
EP1336728A2 EP1336728A2 (en) 2003-08-20
EP1336728A3 true EP1336728A3 (en) 2006-04-05
EP1336728B1 EP1336728B1 (en) 2012-03-21

Family

ID=27588561

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02020196A Expired - Lifetime EP1336728B1 (en) 2002-02-13 2002-09-10 Method and device for regulating the air/fuel ratio of an internal combustion engine

Country Status (3)

Country Link
US (2) US20030150209A1 (en)
EP (1) EP1336728B1 (en)
DE (1) DE10205817A1 (en)

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Publication number Priority date Publication date Assignee Title
DE10351590A1 (en) * 2003-11-05 2005-06-02 Audi Ag Method for operating an internal combustion engine of a vehicle, in particular of a motor vehicle
DE102004029899A1 (en) * 2004-06-19 2006-01-12 Audi Ag Method and device for controlling the air / fuel ratio supplied to an internal combustion engine as a function of the average degree of filling of the oxygen storage of an exhaust gas catalytic converter
DE102004055231B3 (en) * 2004-11-16 2006-07-20 Siemens Ag Method and device for lambda control in an internal combustion engine
DE102005044729A1 (en) * 2005-09-19 2007-03-22 Volkswagen Ag Lambda control with oxygen quantity balancing
JP4710615B2 (en) * 2006-01-10 2011-06-29 株式会社デンソー Heater control device for gas sensor
DE102006059587A1 (en) * 2006-12-16 2008-06-19 Volkswagen Ag Method for determining condition value of catalyzer arranged in exhaust gas unit of internal combustion engine, involves operating internal combustion engine to certain time point in throttle cutoff phase
DE102006061684A1 (en) * 2006-12-28 2008-07-03 Robert Bosch Gmbh Oxygen level controlling method for internal combustion engine, involves modulating exhaust gas composition between threshold values such that lean and fat adjustments of composition are terminated, when amount reaches values, respectively
DE102006062516A1 (en) 2006-12-29 2008-07-03 Volkswagen Ag Catalytic converter i.e. three-way catalytic converter, oxygen storage capacity determining method for exhaust gas system of internal combustion engine of motor vehicle, involves determining oxygen storage capacity based on oxygen amount
DE102008005110B4 (en) 2008-01-15 2018-10-25 Volkswagen Ag Method and control for operating and adjusting a lambda probe
DE102010002586A1 (en) * 2010-03-04 2011-09-08 Robert Bosch Gmbh Method for operating an internal combustion engine
US9759127B2 (en) * 2011-08-05 2017-09-12 Husqvarna Ab Adjusting of air-fuel ratio of a two-stroke internal combustion engine
US10563606B2 (en) * 2012-03-01 2020-02-18 Ford Global Technologies, Llc Post catalyst dynamic scheduling and control
EP2952720B1 (en) * 2013-01-29 2019-11-27 Toyota Jidosha Kabushiki Kaisha Control system of internal combustion engine
DE102013201734A1 (en) 2013-02-04 2014-08-07 Robert Bosch Gmbh Method for operating oxygen sensor arrangement in exhaust gas system of internal combustion engine, involves detecting values for diagnosis of active oxygen adjustment, where former value represents oxygen storage capacity of catalyst
JP6094438B2 (en) * 2013-09-27 2017-03-15 トヨタ自動車株式会社 Control device for internal combustion engine
JP6183295B2 (en) * 2014-05-30 2017-08-23 トヨタ自動車株式会社 Control device for internal combustion engine
DE102015201400A1 (en) * 2015-01-28 2016-07-28 Robert Bosch Gmbh Method for determining limits of a determination of an offset at least in a range of a voltage-lambda characteristic of a first lambda probe arranged in an exhaust passage of an internal combustion engine with respect to a reference voltage-lambda characteristic
JP6308150B2 (en) * 2015-03-12 2018-04-11 トヨタ自動車株式会社 Exhaust gas purification device for internal combustion engine
DE102015222022B4 (en) * 2015-11-09 2019-04-18 Volkswagen Ag Method and device for correcting a characteristic curve of a lambda probe
DE102018208034B4 (en) * 2018-05-23 2021-01-14 Audi Ag Method for operating a drive device and a corresponding drive device
DE102018208683A1 (en) * 2018-06-01 2019-12-05 Robert Bosch Gmbh Method and control unit for regulating a fill level of a storage tank of a catalytic converter for an exhaust gas component
DE102018210739A1 (en) * 2018-06-29 2020-01-02 Robert Bosch Gmbh Method for regulating a filling of an exhaust gas component store of a catalytic converter in the exhaust gas of an internal combustion engine
JP7074076B2 (en) * 2019-01-09 2022-05-24 トヨタ自動車株式会社 Internal combustion engine control device
DE102020212725A1 (en) * 2020-10-08 2022-04-14 Robert Bosch Gesellschaft mit beschränkter Haftung Method for operating an internal combustion engine, computing unit and computer program
DE102020128753A1 (en) 2020-11-02 2022-05-05 Volkswagen Aktiengesellschaft Exhaust aftertreatment system for an internal combustion engine and method for exhaust aftertreatment

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Also Published As

Publication number Publication date
US20100212291A1 (en) 2010-08-26
US20030150209A1 (en) 2003-08-14
US8141345B2 (en) 2012-03-27
EP1336728B1 (en) 2012-03-21
DE10205817A1 (en) 2003-08-14
EP1336728A2 (en) 2003-08-20

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