DE10346220A1 - Fuel injection combustion engine with exhaust gas treatment has a pressure accumulator for use with a reducing agent storage and injection system for spraying the agent into the exhaust gas - Google Patents
Fuel injection combustion engine with exhaust gas treatment has a pressure accumulator for use with a reducing agent storage and injection system for spraying the agent into the exhaust gas Download PDFInfo
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- DE10346220A1 DE10346220A1 DE10346220A DE10346220A DE10346220A1 DE 10346220 A1 DE10346220 A1 DE 10346220A1 DE 10346220 A DE10346220 A DE 10346220A DE 10346220 A DE10346220 A DE 10346220A DE 10346220 A1 DE10346220 A1 DE 10346220A1
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- Prior art keywords
- combustion engine
- internal combustion
- active substance
- exhaust gas
- injection
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Classifications
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- 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]
- F01N3/208—Control of selective catalytic reduction [SCR], e.g. dosing of reducing agent
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9495—Controlling the catalytic process
-
- 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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
-
- 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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/10—Adding substances to exhaust gases the substance being heated, e.g. by heating tank or supply line of the added substance
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Combustion & Propulsion (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Toxicology (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
Stand der Technik State of technology
Die Erfindung betrifft zunächst eine Brennkraftmaschine, insbesondere mit Kraftstoff-Direkteinspritzung, mit einem Abgasnachbehandlungssystem zur Verminderung von Schadstoffen im Abgas, welches umfasst: einen Vorratsbehälter mit einer flüssigen Wirksubstanz, eine Fördereinrichtung zum Fördern der Wirksubstanz, und eine Einspritzvorrichtung zum Einspritzen der Wirksubstanz in das Abgas.The Invention relates first an internal combustion engine, in particular with direct fuel injection, with an exhaust aftertreatment system to reduce pollutants in the exhaust, comprising: a reservoir with a liquid active substance, a conveyor to promote the active substance, and an injector for injecting the active substance in the exhaust gas.
Besonders im Zusammenhang mit künftigen gesetzlichen Vorgaben ist eine Verminderung der Stickoxidemissionen von Kraftfahrzeugen erforderlich. Zur Verringerung der Stickoxidemissionen von Brennkraftmaschinen, beispielsweise solchen mit Benzin- oder Diesel-Direkteinspritzung, kann beispielsweise die so genannte Sele ktive Katalytische Reduktion (SCR) eingesetzt werden. Bei diesem wird in einen Abgasstrang eine definierte Menge eines Reduktionsmittels, beispielsweise Harnstoff, eingebracht. Da Harnstoff bei normalen Umgebungsbedingungen fest ist, liegt er in einer Harnstoff-Wasser-Lösung vor, die in das Abgas eingespritzt wird. Der Harnstoff reagiert in einer ersten Reaktionsstufe mit Wasser zu Ammoniak und Kohlendioxid. In einer zweiten Reaktionsstufe reduziert das Ammoniak die im Abgas enthaltenen Stickoxide zu Stickstoff, wobei als Nebenprodukt Wasser erzeugt wird.Especially in connection with future legal Specifications is a reduction of the nitrogen oxide emissions of motor vehicles required. To reduce the nitrogen oxide emissions of internal combustion engines, for example, those with gasoline or diesel direct injection, For example, the so-called selective catalytic reduction (SCR) are used. This is in an exhaust line a defined amount of a reducing agent, for example urea, brought in. Because urea solidifies in normal environmental conditions is, it is present in a urea-water solution, which is in the exhaust is injected. The urea reacts in a first reaction stage with water to ammonia and carbon dioxide. In a second reaction stage the ammonia reduces the nitrogen oxides contained in the exhaust gas to nitrogen, wherein water is generated as a by-product.
Aus
der
Aufgabe der vorliegenden Erfindung ist es, den Wirkungsgrad der Abgasnachbehandlung zu verbessern.task The present invention is the efficiency of exhaust aftertreatment to improve.
Diese Aufgabe wird bei einer Brennkraftmaschine der eingangs genannten Art dadurch gelöst, dass das Abgasnachbehandlungssystem einen Druckspeicher umfasst, in den die Fördereinrichtung fördert, in dem die Wirksubstanz unter Druck speicherbar ist, und an den die Einspritzvorrichtung direkt angeschlossen ist.These Task is in an internal combustion engine of the aforementioned Kind solved by that the exhaust aftertreatment system comprises a pressure accumulator into which the conveyor promotes, in the active substance can be stored under pressure, and to which the Injection device is connected directly.
Vorteile der ErfindungAdvantages of invention
Ein erster Vorteil bei der erfindungsgemäßen Brennkraftmaschine liegt darin, dass die Wirksubstanz von der Einspritzvorrichtung aufgrund des erhöhten Drucks im Druckspeicher, der prinzipbedingt dann auch in der Einspritzvorrichtung vorliegt, besonders gut zerstäubt werden kann, so dass das hierdurch entstehende Spray eine gute Aufbereitungsqualität hat. Dies führt zu einer verbesserten Umsetzungsrate der Wirksubstanz im Abgas. Die Zwischenspeicherung der Wirksubstanz im Druckspeicher gestattet darüber hinaus gegebenenfalls den Einsatz einer Fördereinrichtung mit kleinerer Förderleistung, da "Verbrauchsspitzen" bei einer entsprechenden Systemkonfiguration nicht durch eine erhöhte Förderleistung, sondern durch die im Druckspeicher zwischengespeicherte Wirksubstanz abgedeckt werden können.One first advantage in the internal combustion engine according to the invention in that the active substance is due to the injection device of the raised Pressure in the accumulator, the principle then in the injection device present, especially well atomized can be, so that the resulting spray has a good treatment quality. This leads to an improved conversion rate of the active substance in the exhaust gas. The Caching of the active substance allowed in the accumulator about that In addition, where appropriate, the use of a conveyor with smaller Capacity, because "consumption peaks" at a corresponding System configuration not by increased delivery, but by covered in the accumulator active substance covered can be.
Vorteilhafte Weiterbildungen der Erfindung sind in Unteransprüchen angegeben.advantageous Further developments of the invention are specified in subclaims.
Zunächst wird vorgeschlagen, dass die Fördereinrichtung eine Vorförderpumpe und eine Hochdruckpumpe umfasst. Die Vorförderpumpe kann beispielsweise eine Membranpumpe sein, die Hochdruckpumpe eine Kolbenpumpe. Hierdurch sind besonders hohe Drücke im Druckspeicher erzielbar, was wiederum zu einer besonders guten Zerstäubung der Wirksubstanz bei der Einspritzung in das Abgas führt.First, will suggested that the conveyor a prefeed pump and a high pressure pump. The prefeed pump can, for example a diaphragm pump, the high-pressure pump a piston pump. hereby are particularly high pressures achievable in the accumulator, which in turn leads to a particularly good atomization the active substance in the injection leads into the exhaust gas.
Vorteilhaft ist ferner, wenn der Druckspeicher mit einer Druckregeleinrichtung verbunden ist. Dies gestattet entweder eine hohe Druckkonstanz oder, bei einer einstellbaren Druckregeleinrichtung, eine Variabilität des Drucks im Druckspeicher, was eine optimale Anpassung des Drucks im Druckspeicher an den augenblicklichen Betriebszustand des Abgasnachbehandlungssystems und/oder der Brennkraftmaschine ermöglicht.Advantageous is also when the accumulator with a pressure regulator connected is. This allows either a high pressure stability or, at an adjustable pressure control device, a variability of the pressure in the accumulator, which is an optimal adjustment of the pressure in the pressure accumulator the current operating state of the exhaust aftertreatment system and / or the internal combustion engine allows.
Eine besonders vorteilhafte Ausgestaltung der erfindungsgemäßen Brennkraftmaschine zeichnet sich dadurch aus, dass sie eine Steuer- und/oder Regeleinrichtung umfasst, welche die Förderleistung der Fördereinrichtung, den Druck im Druckspeicher, den Zeitpunkt der Einspritzung der Wirksubstanz, und/oder die Dauer einer Einspritzung der Wirksubstanz abhängig vom Betriebszustand der Brennkraftmaschine steuert beziehungsweise regelt. Dies gestattet einen besonders sparsamen Verbrauch der Wirksubstanz bei gleichzeitig optimaler Umsetzungsrate des Wirksubstanz im Abgas.A particularly advantageous embodiment of the internal combustion engine according to the invention is characterized by the fact that it is a control and / or regulating device includes the output of the Conveyor, the pressure in the accumulator, the time of injection of the active substance, and / or the duration of an injection of the active substance depends on Operating state of the internal combustion engine controls or regulates. This allows a particularly economical consumption of the active substance at the same time optimal conversion rate of the active substance in the exhaust gas.
Die Kosten für die erfindungsgemäße Brennkraftmaschine können gesenkt werden, wenn die Fördereinrichtung, der Druckspeicher, und/oder die Einspritzvorrichtung von jenem Typ sind, wie er bei direkteinspritzenden Kraftstoffsystemen verwendet wird. In Frage kommen hier insbesondere jene Kraftstoffsysteme, welche mit einer Kraftstoff-Sammelleitung ("Common-Rail") arbeiten. Gegebenenfalls müssen solche Systeme ausgewählt werden, deren Fördereinrichtungen nicht durch das geförderte Fluid geschmiert werden.The costs for the internal combustion engine according to the invention can be lowered when the conveyor, the pressure accumulator, and / or the injection device of that type are as used in direct injection fuel systems. In question here are in particular those fuel systems, which working with a common fuel rail. If necessary, such must Systems selected their conveyors not by the sponsored Be lubricated fluid.
Eine weitere Ausgestaltung zeichnet sich dadurch aus, dass die Wirksubstanz Harnstoff umfasst. Dabei ist der Harnstoff im allgemeinen in einer wässrigen Lösung gebunden und ungefährlich, ermöglicht jedoch eine wirkungsvolle Reduktion der Stickoxide im Abgas.A Another embodiment is characterized in that the active substance Contains urea. The urea is generally in one aqueous solution bound and harmless, allows however an effective reduction of nitrogen oxides in the exhaust gas.
In Weiterbildung hierzu wird vorgeschlagen, dass der Druckspeicher beheizbar ist. Die üblicherweise verwendete Harnstoff-Wasser-Lösung hat die Eigenschaft, bei Temperaturen unter minus 11°C zu gefrieren, das heißt vom flüssigen in den festen Zustand überzugehen. Durch die Beheizbarkeit des Druckspeichers wird die Funktionsfähigkeit des Abgasnachbehandlungssystems auch bei derart tiefen Temperaturen sichergestellt.In Further development, it is proposed that the pressure accumulator is heated. The usual used urea-water solution has the property of freezing at temperatures below minus 11 ° C, this means from the liquid to go into the solid state. Due to the heatability of the pressure accumulator is the functionality the exhaust aftertreatment system even at such low temperatures ensured.
Die Erfindung betrifft auch ein Verfahren zum Betreiben einer Brennkraftmaschine der obigen Art. Es wird vorgeschlagen, dass die Förderleistung der Fördereinrichtung, der Druck in dem Druckspeicher, der Zeitpunkt der Einspritzung der Wirksubstanz, und/oder die Dauer der Einspritzung der Wirksubstanz von aktuellen Betriebsparametern der Brennkraftmaschine abhängen. Hierdurch wird eine besonders wirkungsvolle Reduktion der Schadstoffemissionen im Abgas erzielt bei gleichzeitig geringem Verbrauch an Wirksubstanz.The The invention also relates to a method for operating an internal combustion engine of the above kind. It is suggested that the delivery rate the conveyor, the pressure in the accumulator, the time of injection of the Active substance, and / or duration of injection of active substance depend on current operating parameters of the internal combustion engine. hereby will be a particularly effective reduction of pollutant emissions achieved in the exhaust gas at the same time low consumption of active substance.
In Weiterbildung hierzu wird vorgeschlagen, dass die Betriebsparameter eine Drehzahl einer Kurbelwelle, ein Drehmoment der Brennkraftmaschine, eine in einen Brennraum eingespritzte Kraftstoffmasse, eine Temperatur der Brennkraftmaschine, eine Temperatur der Umgebungsluft, eine Luftfeuchtigkeit der Umgebungsluft, eine Temperatur vor und/oder hinter einem Katalysator, einen NOx- und/oder NH3-Gehalt im Abgas, und/oder ein Kraftstoff-Luftverhältnis im Brennraum, oder jeweils eine äquivalente Größe umfassen. Diese Betriebsparameter werden bei vielen Brennkraftmaschine ohnehin erfasst, sodass für Ihre Verwendung keine zusätzlichen Sensoren erforderlich sind, was die Kosten der Brennkraftmaschine senkt. Vor allem die Verwendung eines NOx- oder NH3-Gehalts im Abgas gestattet eine geregelte Dosierung der Wirksubstanz und gegebenenfalls sogar eine Adaption der für die Dosierung verwendeten Modelle.In a further development, it is proposed that the operating parameters include a rotational speed of a crankshaft, a torque of the internal combustion engine, a fuel mass injected into a combustion chamber, a temperature of the internal combustion engine, a temperature of the ambient air, a humidity of the ambient air, a temperature before and / or behind a catalytic converter , an NO x and / or NH 3 content in the exhaust gas, and / or an air-fuel ratio in the combustion chamber, or each of an equivalent size. These operating parameters are detected in many internal combustion engine anyway, so that no additional sensors are required for your use, which reduces the cost of the internal combustion engine. In particular, the use of a NO x - or NH 3 content in the exhaust gas allows a controlled dosage of the active substance and possibly even an adaptation of the models used for the dosage.
Die entsprechenden Steuer- beziehungsweise Regelalgorithmen liegen üblicherweise bereits vor, da die für die Berechnung der Dosiermengen nötigen Ein- und Ausgangsgrößen in ähnlicher Form im Rahmen der Kraftstoff-Direkteinspritzung verwendet werden und daher bereits weitestgehend vorliegen. Denkbar ist auch, dass die Berechnung und Applikation der für die Einspritzung beziehungsweise Dosierung der Wirksubstanz erforderlichen Daten anhand von Kennfeldern der Brennkraftmaschine ermittelt werden können. Hierdurch könnte ein zusätzliches Steuergerät eingespart werden, und bestimmte Mengenkorrekturen könnten parallel auf der Basis entsprechender Korrekturkoeffizienten, die bei der Steuerung der Brennkraftmaschine berechnet werden, durchgeführt werden.The corresponding control or control algorithms are usually already before, since the for The calculation of the dosing quantities required inputs and outputs in similar Form be used in the context of direct fuel injection and therefore already largely available. It is also conceivable that the calculation and application of the injection or Dosing of the active substance required data based on maps the internal combustion engine can be determined. This could be a saved additional control unit be, and certain quantity corrections could be based on parallel corresponding correction coefficients used in the control of Internal combustion engine can be calculated to be performed.
Zeichnungdrawing
Nachfolgend wird ein besonders bevorzugtes Ausführungsbeispiel der vorliegenden Erfindung unter Bezugnahme auf die beiliegende Zeichnung näher erläutert. In der Zeichnung zeigen:following will be a particularly preferred embodiment of the present invention Invention explained in more detail with reference to the accompanying drawings. In show the drawing:
Beschreibung des Ausführungsbeispielsdescription of the embodiment
In
Bei
dem eingespritzten Kraftstoff handelt es sich im vorliegenden Ausführungsbeispiel
um Diesel-Kraftstoff. Die Kraftstoff-Einspritzvorrichtung
Um
schädliche
Emissionen im Abgas der Brennkraftmaschine
Die
Harnstoff-Wasser-Lösung
Der
Druck im Harnstoff-Druckspeicher
Der
Betrieb der Brennkraftmaschine
Wie
aus
Weitere
Größen können eine
Temperatur TSCR des Katalysators
Im
Verarbeitungsblock
Man
erkennt, dass bei der Brennkraftmaschine
Dabei
kann der Druck im Harnstoff-Druckspeicher
Bei
dem in
Im
vorliegenden Ausführungsbeispiel
wird als Wirksubstanz Harnstoff
Außerdem sei darauf hingewiesen, dass verschiedene Komponenten im Rahmen der obigen Beschreibung der Einfachheit halber nur als "Harnstoff"-Komponenten bezeichnet wurden (beispielsweise "Harnstoff-Druckspeicher"), obwohl bei dem oben beschriebenen Ausführungsbeispiel selbstverständlich kein reiner Harnstoff, sondern immer eine Harnstoff-Wasser-Lösung verwendet wird.In addition, be noted that various components under the above, for the sake of simplicity only referred to as "urea" components were (for example, "urea pressure accumulator"), although in the above described embodiment Of course no pure urea, but always used a urea-water solution becomes.
Claims (12)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10346220A DE10346220A1 (en) | 2003-09-23 | 2003-09-23 | Fuel injection combustion engine with exhaust gas treatment has a pressure accumulator for use with a reducing agent storage and injection system for spraying the agent into the exhaust gas |
PCT/DE2004/001692 WO2005038205A1 (en) | 2003-09-23 | 2004-07-28 | Internal combustion engine with exhaust gas treatment system |
US10/573,184 US20070163239A1 (en) | 2003-09-23 | 2004-07-28 | Internal combustion engine with exhaust treatment system |
EP04762537A EP1668230A1 (en) | 2003-09-23 | 2004-07-28 | Internal combustion engine with exhaust gas treatment system |
JP2005518349A JP2006515657A (en) | 2003-09-23 | 2004-07-28 | Internal combustion engine with exhaust aftertreatment system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10346220A DE10346220A1 (en) | 2003-09-23 | 2003-09-23 | Fuel injection combustion engine with exhaust gas treatment has a pressure accumulator for use with a reducing agent storage and injection system for spraying the agent into the exhaust gas |
Publications (1)
Publication Number | Publication Date |
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DE10346220A1 true DE10346220A1 (en) | 2005-04-14 |
Family
ID=34306270
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE10346220A Withdrawn DE10346220A1 (en) | 2003-09-23 | 2003-09-23 | Fuel injection combustion engine with exhaust gas treatment has a pressure accumulator for use with a reducing agent storage and injection system for spraying the agent into the exhaust gas |
Country Status (5)
Country | Link |
---|---|
US (1) | US20070163239A1 (en) |
EP (1) | EP1668230A1 (en) |
JP (1) | JP2006515657A (en) |
DE (1) | DE10346220A1 (en) |
WO (1) | WO2005038205A1 (en) |
Cited By (36)
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WO2008080691A1 (en) * | 2006-12-28 | 2008-07-10 | Robert Bosch Gmbh | Device for metering a liquid reducing agent |
DE102008039687A1 (en) * | 2008-08-26 | 2010-03-04 | Volkswagen Ag | Exhaust gas stream after treatment method for diesel engine of motor vehicle, involves supplying reducing agent to exhaust gas stream depending on control parameter that characterizes composition of exhaust gas stream |
DE102010042461A1 (en) * | 2010-10-14 | 2011-09-29 | Robert Bosch Gmbh | Dosing system for exhaust gas after-treatment device of diesel combustion engine in commercial vehicle, has pump conveying reducing agent and compressing chemical pump, which is chemically resistant regarding delivery rate and/or pressure |
DE102012002059A1 (en) * | 2012-02-03 | 2013-08-08 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Method for operating a metering device |
DE102012214369A1 (en) | 2012-08-13 | 2014-02-13 | Robert Bosch Gmbh | Exhaust aftertreatment arrangement for internal combustion engine of motor vehicle, has storage with piston arranged between conveying unit and injection valve, where reducing agent is conveyed from storage in direction of exhaust line |
DE102014225200A1 (en) | 2014-12-09 | 2016-06-09 | Robert Bosch Gmbh | Method and control unit for controlling a reciprocating piston pump |
DE102007044191B4 (en) * | 2006-09-20 | 2016-12-29 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | Apparatus and method for injecting a reducing agent into an exhaust stream |
DE102015212922A1 (en) | 2015-07-10 | 2017-01-12 | Robert Bosch Gmbh | Pressure accumulator device, exhaust aftertreatment system, motor vehicle |
EP3163043A1 (en) * | 2015-10-30 | 2017-05-03 | Eberspächer Exhaust Technology GmbH & Co. KG | Device for dispensing of reagent in the waste gas flow of a combustion engine |
DE102016215380A1 (en) | 2016-08-17 | 2018-02-22 | Robert Bosch Gmbh | Method for detecting a blocked pressure line |
DE102017204972A1 (en) | 2017-03-24 | 2018-09-27 | Robert Bosch Gmbh | Method for controlling an SCR system with two metering valves |
DE102017204973A1 (en) | 2017-03-24 | 2018-09-27 | Robert Bosch Gmbh | Method for controlling an SCR system with two metering valves |
DE102018203757A1 (en) | 2017-04-25 | 2018-10-25 | Robert Bosch Gmbh | Method for operating an SCR system with at least two metering valves |
DE102017209836A1 (en) | 2017-06-12 | 2018-12-13 | Hyundai Motor Company | Fuel injection system, fuel injection method and automotive |
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DE102017212979A1 (en) | 2017-07-27 | 2019-01-31 | Robert Bosch Gmbh | Method for testing a signal of a nitrogen oxide sensor |
DE102017216787A1 (en) | 2017-09-22 | 2019-03-28 | Robert Bosch Gmbh | Method for controlling a temperature of an SCR catalyst |
DE102017223365A1 (en) | 2017-12-20 | 2019-06-27 | Robert Bosch Gmbh | Method for operating a hydraulic system |
DE102018200469A1 (en) | 2018-01-12 | 2019-07-18 | Robert Bosch Gmbh | A method for monitoring a change in a pump feature over the lifetime of a delivery pump having a delivery module of an SCR catalyst system |
DE102018200471A1 (en) | 2018-01-12 | 2019-07-18 | Robert Bosch Gmbh | A method for detecting a malfunction of a feed pump having a delivery module of an SCR catalyst system |
DE102018200572A1 (en) | 2018-01-15 | 2019-07-18 | Robert Bosch Gmbh | Method for checking an SCR system with at least two metering valves |
DE102018200467A1 (en) | 2018-01-12 | 2019-07-18 | Robert Bosch Gmbh | Method for teaching at least one pump feature of a pump of a delivery module of an SCR catalyst system |
DE102018205137A1 (en) | 2018-04-05 | 2019-10-10 | Robert Bosch Gmbh | Method for checking an SCR system with at least two metering valves |
DE102018205132A1 (en) | 2018-04-05 | 2019-10-10 | Robert Bosch Gmbh | Method for operating an exhaust aftertreatment system |
EP3604753A1 (en) | 2018-08-03 | 2020-02-05 | Robert Bosch GmbH | Method for operating an scr system in the event of a fault |
DE102018213380A1 (en) * | 2018-08-09 | 2020-02-13 | Robert Bosch Gmbh | Method for monitoring an SCR catalytic converter |
DE102018213379A1 (en) * | 2018-08-09 | 2020-02-13 | Robert Bosch Gmbh | Method for monitoring an SCR catalytic converter |
DE102018216402A1 (en) * | 2018-09-26 | 2020-03-26 | Robert Bosch Gmbh | Process for quality detection of a reducing agent |
DE102018221683A1 (en) | 2018-12-13 | 2020-06-18 | Hyundai Motor Company | Method for operating a fuel injection system of a motor vehicle and fuel injection system |
DE102007034314B4 (en) * | 2007-07-24 | 2020-10-15 | Emcon Technologies Germany (Augsburg) Gmbh | Assembly and method for introducing a reducing agent into an exhaust pipe |
DE102019218170A1 (en) * | 2019-11-25 | 2021-05-27 | Robert Bosch Gmbh | Method for determining the filling amount of a liquid in a container and device for this purpose |
DE102020206335A1 (en) | 2020-05-20 | 2021-11-25 | Robert Bosch Gesellschaft mit beschränkter Haftung | Method for operating a conveyor and metering system |
DE102020206336A1 (en) | 2020-05-20 | 2021-11-25 | Robert Bosch Gesellschaft mit beschränkter Haftung | System and method for temperature control of a metering valve |
DE102020206789A1 (en) | 2020-05-29 | 2021-12-02 | Robert Bosch Gesellschaft mit beschränkter Haftung | Exhaust aftertreatment system and process for its operation |
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DE102004018221A1 (en) * | 2004-04-15 | 2005-11-10 | Robert Bosch Gmbh | Method for introducing a reagent into an exhaust duct of an internal combustion engine and device for carrying out the method |
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ATE267041T1 (en) * | 2001-03-02 | 2004-06-15 | Haldor Topsoe As | SCR METHOD AND DEVICE FOR REDUCING NOX EMISSIONS |
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2003
- 2003-09-23 DE DE10346220A patent/DE10346220A1/en not_active Withdrawn
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2004
- 2004-07-28 EP EP04762537A patent/EP1668230A1/en not_active Withdrawn
- 2004-07-28 JP JP2005518349A patent/JP2006515657A/en active Pending
- 2004-07-28 WO PCT/DE2004/001692 patent/WO2005038205A1/en active Application Filing
- 2004-07-28 US US10/573,184 patent/US20070163239A1/en not_active Abandoned
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Also Published As
Publication number | Publication date |
---|---|
WO2005038205A1 (en) | 2005-04-28 |
JP2006515657A (en) | 2006-06-01 |
US20070163239A1 (en) | 2007-07-19 |
EP1668230A1 (en) | 2006-06-14 |
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