EP1004756A1 - Système d'échappement pour un moteur à combustion interne multicylindre - Google Patents

Système d'échappement pour un moteur à combustion interne multicylindre Download PDF

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Publication number
EP1004756A1
EP1004756A1 EP99119250A EP99119250A EP1004756A1 EP 1004756 A1 EP1004756 A1 EP 1004756A1 EP 99119250 A EP99119250 A EP 99119250A EP 99119250 A EP99119250 A EP 99119250A EP 1004756 A1 EP1004756 A1 EP 1004756A1
Authority
EP
European Patent Office
Prior art keywords
lambda
exhaust system
starting
probe
catalytic converter
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
EP99119250A
Other languages
German (de)
English (en)
Other versions
EP1004756B1 (fr
Inventor
Peter Müller
Maximilian Engl
Stefan Detterbeck
Stephan Ramatschi
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke 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.)
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Publication date
Application filed by Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP1004756A1 publication Critical patent/EP1004756A1/fr
Application granted granted Critical
Publication of EP1004756B1 publication Critical patent/EP1004756B1/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
    • F02D41/1439—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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features
    • F01N13/009—Exhaust or silencing apparatus characterised by constructional features 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
    • F01N13/009—Exhaust or silencing apparatus characterised by constructional features having two or more separate purifying devices arranged in series
    • F01N13/0093—Exhaust or silencing apparatus characterised by constructional features having two or more separate purifying devices arranged in series the purifying devices are of the same type
    • 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
    • F01N13/011—Exhaust or silencing apparatus characterised by constructional features having two or more purifying devices arranged in parallel
    • 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
    • F02D41/1443—Plural sensors with one sensor per cylinder or group of cylinders
    • 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
    • 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
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
    • F01N13/107—More than one exhaust manifold or exhaust collector

Definitions

  • the invention relates to an exhaust system of a multi-cylinder internal combustion engine according to the preamble of claim 1.
  • a catalytic converter In the course of the tightening of the exhaust gas laws there will be an optimal reduction of pollutants of internal combustion engines is becoming increasingly important.
  • The is known Aftertreatment of the exhaust gases in a catalytic converter.
  • a catalytic converter For optimal mode of action a catalytic converter must ensure a favorable exhaust gas composition be carried out by a known Lambda control.
  • a lambda probe In the simplest case, a lambda probe is placed in front of a catalytic converter which emits a signal to a controller which, on the basis of this signal and the power requirement the fuel input into the cylinders of the Internal combustion engine controls.
  • lambda control can be carried out using the two-point method, at the one manipulated variable their direction with every voltage jump, the one Change bold / lean or lean / bold indicates changed.
  • two-point regulation affects aging and environmental influences (poisoning) as interference on the measurement of an accuracy.
  • To this Purpose is known to add another lambda probe behind the catalytic converter to arrange, the influences mentioned above in much less Dimensions is exposed.
  • the principle of the two-probe control is the controlled one Fat or lean shift through a correction control loop aditively changed.
  • the catalytic converters only achieve an optimal effect if they are in a certain temperature range (e.g. 400 to 800 ° C).
  • the catalyst is heated especially in the starting phase problematic.
  • Pre-catalysts are used, which are arranged near the cylinders and which can be brought up to their operating temperature very quickly.
  • the object of the present invention is an exhaust system of the beginning Specify the type mentioned, the precise adjustment of the air / fuel mixture enables.
  • the signals from the aforementioned lambda probes are fed to a controller, which, on the basis of this information, exactly those sub-line branches or pre-catalysts can determine, by a non-optimal air-fuel ratio is led. This also enables measures to be taken to attribute these unwanted deviations in the individual cylinders to zero.
  • not all sub-line strings have to with additional lambda probes downstream of the starting catalytic converters be monitored.
  • n-1 additional Lambda probes can be provided after the starting catalysts.
  • the lambda probes in front of the starting catalysts are preferably linear Lambda probes or broadband probes.
  • the lambda probes after the starting catalysts can be designed as jump probes.
  • the pre-catalyst function is usually monitored by Temperature comparison between the temperatures before and after the catalytic converter. As a rule, 2 temperature sensors are used for each sub-line needed.
  • a pre or Starting catalyst also by comparing the lambda signals before and be monitored after the catalyst.
  • a temperature probe can also be used or a temperature sensor after the respective pre-catalyst be arranged.
  • the exhaust system according to the invention brings good lambda controllability along with good full load behavior. Furthermore, a Inexpensive, lightweight and package-friendly exhaust system with one rapid light-off and heating behavior can be realized. Also results for lean concepts ( ⁇ > 1) the advantage of lower consumption compared a continuous double-flow system.
  • the invention is described below using an exemplary embodiment and With reference to the single drawing explained.
  • the drawing shows a schematic block diagram of an embodiment of the present invention.
  • a six-cylinder engine 10 is shown schematically, with each three cylinders (namely the cylinders of a cylinder bank) into one Exhaust gas line 12, 14 are performed.
  • the sub-line branches 12, 14 are pre and start catalysts VK1, VK2 in the vicinity of the Cylinder arranged.
  • the partial line strands 12, 14 are after the pre-catalysts VK1, VK2 brought together in a main pipe 20, in which a main catalyst HK is used.
  • the pre-catalysts VK1 and VK2 can be quickly to the temperature values required for good exhaust gas cleaning bring. After a certain starting phase, the main catalytic converter takes over most of the purification of those flowing through it Exhaust gases.
  • VK1 and VK2 are in the corresponding sub-lines 12 and 14 linear lambda probes for monitoring the Air-fuel ratio arranged.
  • the linear lambda probes 26 and 28 output a signal to control electronics, not shown, which at least based on these signals and the power requirement Controls fuel input into the respective cylinder.
  • control electronics not shown, which at least based on these signals and the power requirement Controls fuel input into the respective cylinder.
  • a lambda jump probe 24 according to the Main catalyst HK arranged in the main pipe 20. This probe 24 is the Exposed to much less environmental influences.
  • the Lambda probe 24 Since the Lambda probe 24 is arranged in the main tube, it is used by everyone Partial lines 12 and 14 coming exhaust flows through, so that no detailed breakdown of deviations for the individual sub-lines is possible. For this reason, a additional lambda jump probe 30 in the sub-wiring harness 12 behind the Pre-catalyst VK1 arranged, which also sends a voltage signal to the Control (not shown) delivers. Based on the signals from the lambda jump probes 30 and 24 can control incorrect measurements in the linear Assess lambda probes 26 and 28 and also precisely one specific one Assign probe. In this respect, this arrangement is a precise regulation the air-fuel composition to the required lambda value also possible in each individual line section.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Exhaust Silencers (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
EP99119250A 1998-11-12 1999-09-28 Système d'échappement pour un moteur à combustion interne multicylindre Expired - Lifetime EP1004756B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19852294 1998-11-12
DE19852294A DE19852294A1 (de) 1998-11-12 1998-11-12 Abgasanlage einer Mehrzylinder-Brennkraftmaschine

Publications (2)

Publication Number Publication Date
EP1004756A1 true EP1004756A1 (fr) 2000-05-31
EP1004756B1 EP1004756B1 (fr) 2002-01-30

Family

ID=7887635

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99119250A Expired - Lifetime EP1004756B1 (fr) 1998-11-12 1999-09-28 Système d'échappement pour un moteur à combustion interne multicylindre

Country Status (5)

Country Link
US (1) US6321529B1 (fr)
EP (1) EP1004756B1 (fr)
JP (1) JP4435913B2 (fr)
DE (2) DE19852294A1 (fr)
ES (1) ES2170564T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1205648A3 (fr) * 2000-11-10 2003-09-10 Volkswagen Aktiengesellschaft Procédé et dispositif pour le chauffage d'un catalysateur
EP1143131A3 (fr) * 2000-04-07 2004-04-28 Volkswagen Aktiengesellschaft Système d'échappement multiple et procédé pour la régulation du rapport air/carburant et pour le contrôle de la régénération d'un catalyseur d'accumulation des oxydes d'azote

Families Citing this family (11)

* 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
JP3759578B2 (ja) * 2000-09-01 2006-03-29 株式会社デンソー 排出ガス浄化用触媒の劣化検出装置
DE10100613C1 (de) * 2001-01-09 2002-06-13 Siemens Ag Abgasreinigungsanlage für eine Brennkraftmaschine
DE10109331C1 (de) * 2001-02-27 2002-06-13 Siemens Ag Verfahren zum Einstellen der Sauerstoffkonzentration eines Dreiwege-Katalysatorsystems
US6467259B1 (en) * 2001-06-19 2002-10-22 Ford Global Technologies, Inc. Method and system for operating dual-exhaust engine
DE10142669B4 (de) * 2001-08-31 2004-04-15 Bayerische Motoren Werke Ag Motorsteuerung und Verfahren zum Reinigen eines Katalysators in einer Abgasanlage einer Mehrzylinderbrennkraftmaschine
DE10152456A1 (de) * 2001-10-24 2003-05-08 Volkswagen Ag Brennkraftmaschine mit auf mindestens 3 Zylinderbänke aufgeteilten Zylindern
DE10239258A1 (de) * 2002-08-22 2004-03-04 Volkswagen Ag Verbrennungsmotor und Verfahren zum Betrieb eines Verbrennungsmotors mit einer Kraftstoffregelungsvorrichtung
DE10261911A1 (de) 2002-12-30 2004-07-29 Volkswagen Ag Verfahren zur Steuerung der Temperatur eines Katalysators sowie Mehrzylindermotor mit lambdasplitfähiger Abgasreinigungsanlage
DE102005034880B4 (de) 2005-07-26 2007-06-06 Siemens Ag Verfahren und Vorrichtung zur Diagnose einer Abgasreinigungsanlage
CN114076022B (zh) * 2020-08-21 2023-07-14 比亚迪股份有限公司 可变排气管件、可变排气管装置、发动机和车辆

Citations (8)

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US5207057A (en) * 1991-05-16 1993-05-04 Toyota Jidosha Kabushiki Kaisha Air-fuel ratio control device for an engine
US5233829A (en) * 1991-07-23 1993-08-10 Mazda Motor Corporation Exhaust system for internal combustion engine
US5317868A (en) * 1991-12-10 1994-06-07 Robert Bosch Gmbh Method and arrangement for determining the conversion performance of a catalytic converter
US5351484A (en) * 1993-12-16 1994-10-04 Ford Motor Company Light-off catalyst monitor
US5357753A (en) * 1993-12-16 1994-10-25 Ford Motor Company Catalyst monitor for a Y pipe exhaust configuration
US5444977A (en) * 1992-11-02 1995-08-29 Nippondenso Co., Ltd. Air/fuel ratio sensor abnormality detecting device for internal combustion engine
US5544481A (en) * 1995-03-31 1996-08-13 Ford Motor Company Engine air/fuel control system and catalytic converter monitoring
EP0727568A1 (fr) * 1995-02-17 1996-08-21 Hitachi, Ltd. Appareil de diagnose pour un dispositif de purification de gaz d'échappement pour un moteur à combustion interne

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JPH0742542A (ja) * 1993-07-27 1995-02-10 Honda Motor Co Ltd 内燃機関の排気ガス浄化装置
DE19503852C2 (de) * 1994-02-09 2000-01-27 Fuji Heavy Ind Ltd Kraftstoff-Luftverhältnis-Regeleinrichtung und Verfahren zum Regeln des Kraftstoff-Luftverhältnisses eines Motors
US5657625A (en) * 1994-06-17 1997-08-19 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Apparatus and method for internal combustion engine control
US5600056A (en) * 1994-06-20 1997-02-04 Honda Giken Kogyo Kabushiki Kaisha Air/fuel ratio detection system for multicylinder internal combustion engine
DE19524980A1 (de) 1995-07-08 1997-01-09 Opel Adam Ag Abgasanlage einer Mehrzylinder-Brennkraftmaschine
JP3321806B2 (ja) * 1995-11-17 2002-09-09 トヨタ自動車株式会社 内燃機関の排気を浄化する方法および装置
JP4092743B2 (ja) * 1996-07-05 2008-05-28 マツダ株式会社 エンジンの触媒劣化検出方法およびその装置
DE19629554C2 (de) * 1996-07-22 2000-05-25 Siemens Ag Verfahren zur Temperaturregelung für eine Lambdasonde
US6047544A (en) * 1997-08-20 2000-04-11 Nissan Motor Co., Ltd. Engine exhaust gas purification catalyst and exhaust gas purifier
US5983627A (en) * 1997-09-02 1999-11-16 Ford Global Technologies, Inc. Closed loop control for desulfating a NOx trap

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5207057A (en) * 1991-05-16 1993-05-04 Toyota Jidosha Kabushiki Kaisha Air-fuel ratio control device for an engine
US5233829A (en) * 1991-07-23 1993-08-10 Mazda Motor Corporation Exhaust system for internal combustion engine
US5317868A (en) * 1991-12-10 1994-06-07 Robert Bosch Gmbh Method and arrangement for determining the conversion performance of a catalytic converter
US5444977A (en) * 1992-11-02 1995-08-29 Nippondenso Co., Ltd. Air/fuel ratio sensor abnormality detecting device for internal combustion engine
US5351484A (en) * 1993-12-16 1994-10-04 Ford Motor Company Light-off catalyst monitor
US5357753A (en) * 1993-12-16 1994-10-25 Ford Motor Company Catalyst monitor for a Y pipe exhaust configuration
EP0727568A1 (fr) * 1995-02-17 1996-08-21 Hitachi, Ltd. Appareil de diagnose pour un dispositif de purification de gaz d'échappement pour un moteur à combustion interne
US5544481A (en) * 1995-03-31 1996-08-13 Ford Motor Company Engine air/fuel control system and catalytic converter monitoring

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1143131A3 (fr) * 2000-04-07 2004-04-28 Volkswagen Aktiengesellschaft Système d'échappement multiple et procédé pour la régulation du rapport air/carburant et pour le contrôle de la régénération d'un catalyseur d'accumulation des oxydes d'azote
EP1205648A3 (fr) * 2000-11-10 2003-09-10 Volkswagen Aktiengesellschaft Procédé et dispositif pour le chauffage d'un catalysateur

Also Published As

Publication number Publication date
JP2000145498A (ja) 2000-05-26
DE59900795D1 (de) 2002-03-14
JP4435913B2 (ja) 2010-03-24
EP1004756B1 (fr) 2002-01-30
DE19852294A1 (de) 2000-05-18
US6321529B1 (en) 2001-11-27
ES2170564T3 (es) 2002-08-01

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