DE102009015898B4 - Device for exhaust aftertreatment for a motor vehicle internal combustion engine - Google Patents

Device for exhaust aftertreatment for a motor vehicle internal combustion engine Download PDF

Info

Publication number
DE102009015898B4
DE102009015898B4 DE102009015898.7A DE102009015898A DE102009015898B4 DE 102009015898 B4 DE102009015898 B4 DE 102009015898B4 DE 102009015898 A DE102009015898 A DE 102009015898A DE 102009015898 B4 DE102009015898 B4 DE 102009015898B4
Authority
DE
Germany
Prior art keywords
exhaust gas
sensor
turbine
combustion engine
internal combustion
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.)
Active
Application number
DE102009015898.7A
Other languages
German (de)
Other versions
DE102009015898A1 (en
Inventor
Rolf Feltes
Andreas Bittermann
Oliver Heiml
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.)
Filing date
Publication date
Application filed by Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Priority to DE102009015898.7A priority Critical patent/DE102009015898B4/en
Publication of DE102009015898A1 publication Critical patent/DE102009015898A1/en
Application granted granted Critical
Publication of DE102009015898B4 publication Critical patent/DE102009015898B4/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • F01N13/008—Mounting or arrangement of exhaust sensors in or on exhaust 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
    • 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
    • F01N3/101—Three-way catalysts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • 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
    • F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
    • F01N2560/02—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor
    • F01N2560/026—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor for measuring or detecting NOx
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2220/00—Application
    • F05B2220/40—Application in turbochargers
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • 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
    • Y02T10/12—Improving ICE efficiencies

Abstract

Einrichtung zur Abgasnachbehandlung für eine Kraftfahrzeug-Brennkraftmaschine mit einem Abgasturbolader (100), wobei der Turbolader (100) eine Turbine umfasst und die Turbine in einem Turbinen-Gehäuse (104, 110) angeordnet ist, das Turbinen-Gehäuse (104, 110) beim Betrieb der Brennkraftmaschine abgasdurchströmt ist und die Einrichtung zur Abgasnachbehandlung wenigstens einen Katalysator sowie wenigstens einen Gas-Sensor (112) umfasst, dadurch gekennzeichnet, dass der Gas-Sensor (112) unmittelbar im Turbinen-Gehäuse (104, 110) zumindest annähernd senkrecht zur Abgas-Strömungsrichtung (a) angeordnet ist.Device for exhaust gas aftertreatment for a motor vehicle internal combustion engine with an exhaust gas turbocharger (100), the turbocharger (100) comprising a turbine and the turbine in a turbine housing (104, 110) is arranged, the turbine housing (104, 110) at exhaust gas flows through during operation of the internal combustion engine and the device for exhaust gas aftertreatment comprises at least one catalytic converter and at least one gas sensor (112), characterized in that the gas sensor (112) is located directly in the turbine housing (104, 110) at least approximately perpendicularly to the exhaust gas -Flow direction (a) is arranged.

Description

Die Erfindung betrifft eine Einrichtung zur Abgasnachbehandlung für eine Kraftfahrzeug-Brennkraftmaschine mit einem Abgasturbolader, wobei der Turbolader eine Turbine umfasst und die Turbine in einem Turbinen-Gehäuse angeordnet ist, das Turbinen-Gehäuse beim Betrieb der Brennkraftmaschine abgasdurchströmt ist und die Einrichtung zur Abgasnachbehandlung wenigstens einen Katalysator sowie wenigstens einen Gas-Sensor umfasst.The invention relates to a device for exhaust gas aftertreatment for a motor vehicle internal combustion engine with an exhaust gas turbocharger, the turbocharger comprising a turbine and the turbine being arranged in a turbine housing, the turbine housing having exhaust gas flowing through it during operation of the internal combustion engine and the device for exhaust gas aftertreatment at least one Catalyst and at least one gas sensor.

Aus der DE 10 2007 021 763 A1 ist ein Abgasturbolader mit einem turbinenauslassseitigen Abgasrohr bekannt, wobei eine Lambda-Sonde an einem gebogenen Anschnitt des Abgasrohrs befestigt ist. Dabei liegt die Längsachse der Lambda-Sonde in Verlängerung der Turbinen-Achse.From the DE 10 2007 021 763 A1 an exhaust gas turbocharger with an exhaust pipe on the turbine outlet side is known, with a lambda probe being fastened to a bent section of the exhaust pipe. The longitudinal axis of the lambda probe is in the extension of the turbine axis.

Bei einer Anordnung gemäß der DE 10 2007 021 763 A1 kann eine einwandfreie Durchströmung der Lambda-Sonde nicht immer gewährleistet werden mit der Folge einer ungenauen Messung und Regelung. Außerdem können Ruß-Ablagerungen an der Lambda-Sonde deren Dynamik beeinträchtigen.In an arrangement according to the DE 10 2007 021 763 A1 a perfect flow through the lambda probe cannot always be guaranteed, resulting in inaccurate measurement and control. In addition, soot deposits on the lambda probe can impair its dynamics.

Aufgabe der Erfindung ist es daher, eine eingangs genannte Einrichtung bereit zu stellen, bei der der Gas-Sensor besser durchströmbar ist, sodass eine höhere Messgeschwindigkeit und -güte erreicht wird. Außerdem solle eine dauerhafte Ruß-Ablagerungen am Gas-Sensor vermieden werden, um eine nachhaltig hohe Dynamik des Sensor-Signals zu gewährleisten.The object of the invention is therefore to provide a device as mentioned at the outset, in which the gas sensor can be flowed through better, so that a higher measurement speed and quality is achieved. In addition, permanent soot deposits on the gas sensor should be avoided in order to ensure sustained high dynamics of the sensor signal.

Die Lösung der Aufgabe erfolgt mit einer Einrichtung mit den Merkmalen des Anspruchs 1, indem der Gas-Sensor unmittelbar im Turbinen-Gehäuse zumindest annähernd senkrecht zur Abgas-Strömungsrichtung angeordnet ist. Die Einbaulage des Gas-Sensors senkrecht zur Abgas-Strömungsrichtung ermöglicht eine verbesserte Durchströmung und damit eine schnellere und genauere Messung. Aufgrund der Anordnung des Gas-Sensors unmittelbar im Turbinen-Gehäuse können beim Betrieb anfallende Ruß-Ablagerungen am Sensor verbrannt werden, sodass die Dynamik des Sensor-Signals über den Nutzungszeitraum aufrecht erhalten werden kann.The object is achieved with a device having the features of claim 1, in that the gas sensor is arranged directly in the turbine housing, at least approximately perpendicularly to the exhaust gas flow direction. The installation position of the gas sensor perpendicular to the exhaust gas flow direction enables improved flow and thus faster and more accurate measurement. Due to the arrangement of the gas sensor directly in the turbine housing, soot deposits that occur on the sensor during operation can be burned off, so that the dynamics of the sensor signal can be maintained over the period of use.

Vorzugsweise ist der Gas-Sensor eine Lambda-Sonde zur Bestimmung des Kraftstoff-Luft-Verhältnisses der Verbrennung in der Brennkraftmaschine basierend auf dem Restsauerstoffgehalt im Abgas.The gas sensor is preferably a lambda probe for determining the fuel/air ratio of combustion in the internal combustion engine based on the residual oxygen content in the exhaust gas.

Nachfolgend ist ein besonders zu bevorzugendes Ausführungsbeispiel der Erfindung unter Bezugnahme auf Figuren näher erläutert, dabei zeigen schematisch und beispielhaft

  • 1a einen Abgasturbolader mit Gehäuse und Gas-Sensor im Längsschnitt und
  • 1b einen Abgasturbolader mit Gehäuse und Gas-Sensor im Querschnitt.
A particularly preferred exemplary embodiment of the invention is explained in more detail below with reference to figures, which show diagrammatically and by way of example
  • 1a an exhaust gas turbocharger with housing and gas sensor in longitudinal section and
  • 1b an exhaust gas turbocharger with housing and gas sensor in cross section.

1a zeigt einen Abgasturbolader 100 mit Gehäuse 102 und Gas-Sensor 112 im Längsschnitt, ein Querschnitt ist in 1b dargestellt. 1a shows an exhaust gas turbocharger 100 with housing 102 and gas sensor 112 in longitudinal section; a cross section is shown in FIG 1b shown.

Der Abgasturbolader 100 ist einer hier nicht näher gezeigten Kraftfahrzeug-Brennkraftmaschine zugeordnet und dient der Leistungssteigerung, indem der Gasdurchsatz pro Arbeitstakt erhöht wird. Hierzu wird eine Turbine mittels des Abgasstroms der Brennkraftmaschine angetrieben und treibt ihrerseits einen Verdichter an, der das Ladegas verdichtet, sodass je Arbeitstakt eine größere Gasmenge durchgesetzt werden kann.The exhaust gas turbocharger 100 is assigned to a motor vehicle internal combustion engine, not shown in detail here, and is used to increase performance by increasing the gas throughput per power stroke. For this purpose, a turbine is driven by the exhaust gas flow of the internal combustion engine and in turn drives a compressor that compresses the charging gas, so that a larger quantity of gas can be pushed through per work cycle.

Turbine und Verdichter sind mittels Flügel- oder Schaufelrädern gebildet, die auf einer gemeinsamen Welle gelagert sind. Das Abgasturbolader-Gehäuse 102 umfasst einen Gehäusebereich 104, in dem die Turbine angeordnet ist, einen Gehäusebereich 108, in dem der Verdichter angeordnet ist und einen Gehäusebereich 106 zur Lagerung der Welle. Außerdem weist das Gehäuse 102 eine Abgasein- und einen Abgasauslass 110 auf, die der Turbine zugeordnet sind sowie einen Ladegasein- und einen Ladegasauslass, die dem Verdichter zugeordnet sind.Turbine and compressor are formed by impellers or impellers that are mounted on a common shaft. The exhaust gas turbocharger housing 102 comprises a housing area 104 in which the turbine is arranged, a housing area 108 in which the compressor is arranged and a housing area 106 for supporting the shaft. In addition, the housing 102 has an exhaust gas inlet and an exhaust gas outlet 110 associated with the turbine and a charge gas inlet and a charge gas outlet associated with the compressor.

Das Turbinengehäuse 104 ist einstückig gegossen hergestellt, beispielsweise aus legiertem Gusseisen mit Kugelgraphit, Stahlguss oder Aluminium-Guss. Alternativ kann das Turbinengehäuse 104 auch aus mehreren miteinander verbundenen vorzugsweise gegossenen Einzelteilen hergestellt sein. Dabei kann die Verbindung beispielsweise mittels Schrauben oder Schweißen hergestellt sein.The turbine housing 104 is cast in one piece, for example from alloyed nodular cast iron, cast steel or cast aluminum. Alternatively, the turbine housing 104 can also be produced from a plurality of individual parts which are connected to one another and are preferably cast. In this case, the connection can be made, for example, by means of screws or welding.

Im Abgasauslass 110, also unmittelbar im Turbinengehäuse 104, ist ein Gas-Sensor 112 angeordnet. Der Gas-Sensor 112 umfasst ein gegebenenfalls mehrteilig ausgeführtes Sensor-Gehäuse mit einem Kopfbereich 114 und einem Fußbereich 116. Im Kopfbereich 114 des Sensor-Gehäuses ist eine Sensorkappe angeordnet, die gasdurchströmbar ist und in der ein Sensorelement aufgenommen ist. Am Fußbereich 116 des Sensor-Gehäuses sind elektrische Anschlusskabel des Sensors nach außen geführt. Das Sensor-Gehäuse umfasst einen Flansch und/oder ein Gewinde zur Festlegung des Gas-Sensors 112 am Turbinengehäuse 104. In Einbaulage ragt der Kopfbereich 114 des Sensor-Gehäuses in den Abgasauslass 110 des Turbinengehäuses 104 hinein, während der Fußbereich 116 des Sensor-Gehäuses außerhalb des Turbinengehäuses 104 liegt, um einen elektrischen Anschluss des Gas-Sensors 112 zu ermöglichen.A gas sensor 112 is arranged in the exhaust gas outlet 110, ie directly in the turbine housing 104. The gas sensor 112 comprises a sensor housing, optionally made in several parts, with a head region 114 and a foot region 116. A sensor cap is arranged in the head region 114 of the sensor housing, through which gas can flow and in which a sensor element is accommodated. Electrical connection cables of the sensor are routed to the outside at the foot area 116 of the sensor housing. The sensor housing includes a flange and/or a thread for fixing the gas sensor 112 to the turbine housing 104. In the installed position, the head area 114 of the sensor housing protrudes into the exhaust gas outlet 110 of the turbine housing 104, while the foot area 116 of the sensor housing is outside of the turbine housing 104 to allow electrical connection of the gas sensor 112.

Durch den Abgasauslass 110 des Turbinengehäuses 104 strömt beim Betrieb der Brennkraftmaschine und des Abgasturboladers Abgas von der Turbine kommend in Richtung Abgasanlage entsprechend der Pfeilrichtung a ab. Der Gas-Sensor 112 ist in Einbaulage mit seiner Achse b zumindest annähernd senkrecht zur Abgas-Strömungsrichtung a angeordnet. Damit wird ein verbesserte Durchströmung des Gas-Sensor 112 und somit Anströmung des Sensorelements im Fußbereich 116 des Sensor-Gehäuses erreicht, sodass eine höhere Messgeschwindigkeit und -güte erzielt wird. Außerdem wird eine dauerhafte Ruß-Ablagerungen am Gas-Sensor vermieden und so eine nachhaltig hohe Dynamik des Sensor-Signals gewährleistet.During operation of the internal combustion engine and the exhaust gas turbocharger, exhaust gas flows off through the exhaust gas outlet 110 of the turbine housing 104, coming from the turbine in the direction of the exhaust system in accordance with the direction of the arrow a. In the installation position, the gas sensor 112 is arranged with its axis b at least approximately perpendicular to the exhaust gas flow direction a. This achieves an improved flow through the gas sensor 112 and thus an improved flow onto the sensor element in the foot area 116 of the sensor housing, so that a higher measurement speed and quality is achieved. In addition, permanent soot deposits on the gas sensor are avoided, thus ensuring a sustained high dynamic of the sensor signal.

Der Gas-Sensor 112 ist vorliegend eine Lambda-Sonde zur Bestimmung des Kraftstoff-Luft-Verhältnisses im Abgas der Brennkraftmaschine basierend auf dem Restsauerstoffgehalt im Abgas. Der Gas-Sensor 112 ist der Hauptsensor im Regelkreis der Lambdaregelung zur katalytischen Abgasreinigung mittels NOx-Speicherkatalysator (NSK). Der NSK ist im weiteren Verlauf der hier nicht gezeigten Abgasanlage angeordnet.In the present case, gas sensor 112 is a lambda probe for determining the fuel/air ratio in the exhaust gas of the internal combustion engine based on the residual oxygen content in the exhaust gas. The gas sensor 112 is the main sensor in the control loop of the lambda control for catalytic exhaust gas purification using a NOx storage catalytic converter (NSK). The NSK is arranged in the further course of the exhaust system, which is not shown here.

In einem anderen Ausführungsbeispiel kann der Gas-Sensor 112 auch mit einem 3-Wege-Katalysator zusammenwirken und/oder ein anderer Gas-Sensor sein, beispielsweise ein NOx-Sonsor zur Bestimmung des NOx-Gehalts im Abgas in Verbindung mit einem NOx-Speicherkatalysator oder einem SCR-Katalysator.In another exemplary embodiment, gas sensor 112 can also interact with a 3-way catalytic converter and/or be another gas sensor, for example a NOx sensor for determining the NOx content in the exhaust gas in conjunction with a NOx storage catalytic converter or an SCR catalytic converter.

Claims (2)

Einrichtung zur Abgasnachbehandlung für eine Kraftfahrzeug-Brennkraftmaschine mit einem Abgasturbolader (100), wobei der Turbolader (100) eine Turbine umfasst und die Turbine in einem Turbinen-Gehäuse (104, 110) angeordnet ist, das Turbinen-Gehäuse (104, 110) beim Betrieb der Brennkraftmaschine abgasdurchströmt ist und die Einrichtung zur Abgasnachbehandlung wenigstens einen Katalysator sowie wenigstens einen Gas-Sensor (112) umfasst, dadurch gekennzeichnet, dass der Gas-Sensor (112) unmittelbar im Turbinen-Gehäuse (104, 110) zumindest annähernd senkrecht zur Abgas-Strömungsrichtung (a) angeordnet ist.Device for exhaust gas aftertreatment for a motor vehicle internal combustion engine with an exhaust gas turbocharger (100), the turbocharger (100) comprising a turbine and the turbine in a turbine housing (104, 110) is arranged, the turbine housing (104, 110) at exhaust gas flows through operation of the internal combustion engine and the device for exhaust gas aftertreatment comprises at least one catalytic converter and at least one gas sensor (112), characterized in that the gas sensor (112) is directly in the turbine housing (104, 110) at least approximately perpendicular to the exhaust gas -Flow direction (a) is arranged. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Gas-Sensor (112) eine Lambda-Sonde ist.setup after claim 1 , characterized in that the gas sensor (112) is a lambda probe.
DE102009015898.7A 2009-04-01 2009-04-01 Device for exhaust aftertreatment for a motor vehicle internal combustion engine Active DE102009015898B4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE102009015898.7A DE102009015898B4 (en) 2009-04-01 2009-04-01 Device for exhaust aftertreatment for a motor vehicle internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009015898.7A DE102009015898B4 (en) 2009-04-01 2009-04-01 Device for exhaust aftertreatment for a motor vehicle internal combustion engine

Publications (2)

Publication Number Publication Date
DE102009015898A1 DE102009015898A1 (en) 2010-10-14
DE102009015898B4 true DE102009015898B4 (en) 2022-05-12

Family

ID=42733085

Family Applications (1)

Application Number Title Priority Date Filing Date
DE102009015898.7A Active DE102009015898B4 (en) 2009-04-01 2009-04-01 Device for exhaust aftertreatment for a motor vehicle internal combustion engine

Country Status (1)

Country Link
DE (1) DE102009015898B4 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3722503A1 (en) 1987-07-08 1989-01-19 Daimler Benz Ag Method for improving the exhaust gas behaviour of multi-cylinder spark-ignition engines with controlled exhaust-gas catalytic convertor
DE4335153A1 (en) 1993-10-15 1995-04-20 Porsche Ag Exhaust system for an internal combustion engine with an exhaust gas turbocharger
DE10026359A1 (en) 2000-05-27 2001-12-13 Volkswagen Ag Exhaust cleaning unit for remote-ignition internal combustion engine has two 3-way catalytic converters with turbo charger in between and controllable secondary air pump and regulating and measuring devices to reduce toxic emissions
US6354078B1 (en) 1996-02-22 2002-03-12 Volvo Personvagnar Ab Device and method for reducing emissions in catalytic converter exhaust systems
DE102007021763A1 (en) 2006-05-11 2007-11-15 Toyota Jidosha Kabushiki Kaisha, Toyota Turbine of internal combustion engine turbocharger, has lambda sensor located close to its downstream side, on axis of turbine outlet channel
DE202008010643U1 (en) 2008-08-11 2008-10-23 Borgwarner Inc., Auburn Hills Bearing housing of an exhaust gas turbocharger
FR2925586A3 (en) 2007-12-21 2009-06-26 Renault Sas Exhaust line for turbocharged type combustion engine of vehicle, has intermediate duct with fixation unit receiving additional fuel injector, and connected in upstream of engine, where duct and turbine case are formed as single piece

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3722503A1 (en) 1987-07-08 1989-01-19 Daimler Benz Ag Method for improving the exhaust gas behaviour of multi-cylinder spark-ignition engines with controlled exhaust-gas catalytic convertor
DE4335153A1 (en) 1993-10-15 1995-04-20 Porsche Ag Exhaust system for an internal combustion engine with an exhaust gas turbocharger
US6354078B1 (en) 1996-02-22 2002-03-12 Volvo Personvagnar Ab Device and method for reducing emissions in catalytic converter exhaust systems
DE10026359A1 (en) 2000-05-27 2001-12-13 Volkswagen Ag Exhaust cleaning unit for remote-ignition internal combustion engine has two 3-way catalytic converters with turbo charger in between and controllable secondary air pump and regulating and measuring devices to reduce toxic emissions
DE102007021763A1 (en) 2006-05-11 2007-11-15 Toyota Jidosha Kabushiki Kaisha, Toyota Turbine of internal combustion engine turbocharger, has lambda sensor located close to its downstream side, on axis of turbine outlet channel
FR2925586A3 (en) 2007-12-21 2009-06-26 Renault Sas Exhaust line for turbocharged type combustion engine of vehicle, has intermediate duct with fixation unit receiving additional fuel injector, and connected in upstream of engine, where duct and turbine case are formed as single piece
DE202008010643U1 (en) 2008-08-11 2008-10-23 Borgwarner Inc., Auburn Hills Bearing housing of an exhaust gas turbocharger

Also Published As

Publication number Publication date
DE102009015898A1 (en) 2010-10-14

Similar Documents

Publication Publication Date Title
EP0521052A1 (en) Process and device for monitoring the performance of a catalyst in an internal combustion engine.
DE102012011603A1 (en) Exhaust system and method for operating such
DE102005062120A1 (en) Method and device for monitoring an exhaust aftertreatment system
CN104514598A (en) Exhaust gas treatment device
EP2401485B1 (en) Method for operating an exhaust gas system
DE102005053945A1 (en) System for monitoring exhaust gas concentrations
EP3655634B1 (en) Exhaust gas system for an internal combustion engine
DE602005000816T2 (en) exhaust gas purification device
DE102018001426A1 (en) An exhaust device for an engine and method for detecting a pressure drop of a particulate filter
DE102017115399A1 (en) Exhaust gas aftertreatment system and method for exhaust aftertreatment of an internal combustion engine
DE102009015898B4 (en) Device for exhaust aftertreatment for a motor vehicle internal combustion engine
DE102017125975A1 (en) REDUCTOR SPRAY GUN AND EXHAUST GAS AND DEFLECTOR
DE102019122173A9 (en) Gas sensor diagnostic device
DE102016200328A1 (en) System for aftertreatment of an exhaust gas and motor vehicle
DE102018124869A1 (en) Method for operating an internal combustion engine and internal combustion engine
EP1138898B1 (en) Method and device for purification of exhaust gases
DE102019133498B4 (en) Method for reactivation of an exhaust aftertreatment component and propulsion device
DE102005063204B4 (en) Design and operation of a lean-running internal combustion engine with adapted exhaust aftertreatment
DE102017113691A1 (en) Exhaust after-treatment device and method for exhaust aftertreatment of an internal combustion engine
DE10047809B4 (en) Method for operating control of a secondary air pump and emission control system with a secondary air pump
DE102019132790A1 (en) Exhaust gas cleaning system for a vehicle and method for controlling such
EP1617050B1 (en) Silencer for an exhaust system
DE102018001458A1 (en) An exhaust device for an engine and method of forming the same
DE102018219332A1 (en) Emission control device and motor vehicle
DE102004052062A1 (en) Regenerating a storage catalyst in an engine exhaust system comprises adjusting the lambda ratio to substoichiometric to regenerate the catalyst and repeatedly supplying air to produce a superstoichiometric lambda ratio

Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
R012 Request for examination validly filed
R018 Grant decision by examination section/examining division
R020 Patent grant now final