DE10358910B4 - exhaust aftertreatment - Google Patents
exhaust aftertreatment Download PDFInfo
- Publication number
- DE10358910B4 DE10358910B4 DE10358910A DE10358910A DE10358910B4 DE 10358910 B4 DE10358910 B4 DE 10358910B4 DE 10358910 A DE10358910 A DE 10358910A DE 10358910 A DE10358910 A DE 10358910A DE 10358910 B4 DE10358910 B4 DE 10358910B4
- Authority
- DE
- Germany
- Prior art keywords
- nox
- gasoline
- diesel
- nox trap
- engine
- 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.)
- Expired - Fee Related
Links
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
- 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
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0871—Regulation of absorbents or adsorbents, e.g. purging
-
- 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
- B01D53/9445—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
- B01D53/9454—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC] characterised by a specific device
-
- 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
- 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
- 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
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0814—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents combined with catalytic converters, e.g. NOx absorption/storage reduction catalysts
-
- 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
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0821—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents combined with particulate filters
-
- 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
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
- F01N3/0842—Nitrogen oxides
-
- 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
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/30—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a fuel reformer
-
- 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
- F01N2570/14—Nitrogen oxides
-
- 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
- F01N2610/03—Adding substances to exhaust gases the substance being hydrocarbons, e.g. engine fuel
-
- 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
- F01N2610/04—Adding substances to exhaust gases the substance being hydrogen
-
- 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
- F01N2610/05—Adding substances to exhaust gases the substance being carbon monoxide
-
- 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
- F01N2610/08—Adding substances to exhaust gases with prior mixing of the substances with a gas, e.g. air
-
- 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
Motorsteuerungssystem
in einem Fahrzeug, umfassend:
einen Dieselmotor (10) in dem
Fahrzeug,
einen Dieselkraftstofftank (12), um dem Dieselmotor
(10) Dieselkraftstoff zuzuführen,
einen
Benzintank (14) in dem Fahrzeug,
einen Benzinreformer (16)
zum Liefern von Produkten einer partiellen Oxidation von Benzin,
das in dem Benzintank (14) enthalten ist,
eine NOx-Falle (18),
die mit dem Auspuff des Dieselmotors (10) gekoppelt ist.An engine control system in a vehicle, comprising:
a diesel engine (10) in the vehicle,
a diesel fuel tank (12) for supplying diesel fuel to the diesel engine (10),
a gas tank (14) in the vehicle,
a gasoline reformer (16) for supplying products of partial oxidation of gasoline contained in the gasoline tank (14),
a NOx trap (18) coupled to the exhaust of the diesel engine (10).
Description
TECHNISCHES GEBIETTECHNICAL AREA
Die vorliegende Erfindung betrifft die Steuerung von Verbrennungsmotoren. Im Besonderen betrifft die vorliegende Erfindung ein Verfahren und eine Vorrichtung zum Steuern eines Dieselmotors, um den katalytischen Wirkungsgrad zu verbessern.The The present invention relates to the control of internal combustion engines. In particular, the present invention relates to a method and a device for controlling a diesel engine to the catalytic Improve efficiency.
HINTERGRUND DER ERFINDUNG BACKGROUND OF THE INVENTION
Die gegenwärtigen gesetzlichen Vorschriften auf dem Kraftfahrzeugmarkt haben zu einem zunehmenden Bedarf geführt, bei aktuellen Fahrzeugen Emissionen zu verringern. Katalytische Umformer und NOx-Fallen oder Absorptionseinheiten sind dabei die vorwiegenden Werkzeuge, die zur Reduzierung von Emissionen in Fahrzeugen verwendet werden.The current legal regulations in the motor vehicle market have become one increasing demand, to reduce emissions in current vehicles. catalytic Converters and NOx traps or absorption units are the predominant tools that reduce emissions in vehicles be used.
Ein katalytischer Dreiwegeumformer oxidiert Emissionen von Kohlenwasserstoffen (HC) und Kohlenmonoxid (CO) in einem Fahrzeug zu relativ gutartigen Verbindungen, wie etwa Kohlendioxid (CO2) und Wasser. Ein katalytischer Umformer umfasst typischerweise eine spezifische Katalysatorformulierung, die Platin, Palladium und Rhodium enthält, um gleichzeitig Oxide von Stickstoff (NOx), HC und CO zu reduzieren. Der Umwandlungswirkungsgrad eines Katalysators hängt von der Temperatur des Katalysators und dem Luft/Kraftstoff-Verhältnis ab. NOx-Fallen werden dazu verwendet, während magerer Betriebsbedingungen NOx einzufangen und während fetter Betriebsbedingungen NOx freizugeben, so dass das NOx zu Kohlendioxid und Stickstoff (N2) reduziert wird.A three-way catalytic converter oxidizes emissions of hydrocarbons (HC) and carbon monoxide (CO) in a vehicle to relatively benign compounds such as carbon dioxide (CO 2 ) and water. A catalytic converter typically comprises a specific catalyst formulation containing platinum, palladium and rhodium to simultaneously reduce oxides of nitrogen (NOx), HC and CO. The conversion efficiency of a catalyst depends on the temperature of the catalyst and the air / fuel ratio. NOx traps are used to trap NOx during lean operating conditions and release NOx during rich operating conditions, reducing the NOx to carbon dioxide and nitrogen (N 2 ).
Der
Funktionstemperaturbereich für
einen typischen Katalysator zum Einfangen von NOx im mageren Zustand
und zur Dreiwegeumwandlung ist in
Die typischen Edelmetall-Katalysatorformulierungen behalten bis zu Temperaturen von 900°C sehr hohe Umwandlungswirkungsgrade. Die NOx-Speicherverbindungen, wie etwa Barium oder Kalium, die den Dreiwegekatalysatoren hinzugefügt werden, sind gewöhnlich bis zu Temperaturen von etwa 850°C stabil.The typical noble metal catalyst formulations retain up to temperatures from 900 ° C very much high conversion efficiencies. The NOx storage compounds, such as about barium or potassium, which are added to the three-way catalysts, are ordinary up to temperatures of about 850 ° C stable.
Die Leistung einer Mager-NOx-Falle bei Dieselmotoranwendungen ist durch die niedrigere Abgastemperaturen und die Schwierigkeit, häufige fette Abgasmischungen für den Katalysator bereitzustellen, stark begrenzt. Die sehr niedrigen Abgastemperaturen eines Dieselmotors sind das Ergebnis eines sehr mageren Betriebs und höherer Verdichtungs- und Ausdehnungsverhältnisse. Das sind die gleichen Ursachen, die für den höheren Kraftstoffwirkungsgrad im Vergleich mit fremd gezündeten Benzinmotoren sorgen.The Performance of a lean NOx trap in diesel engine applications is through the lower exhaust gas temperatures and the difficulty of frequent rich exhaust gas mixtures for the To provide catalyst, very limited. The very low Exhaust gas temperatures of a diesel engine are the result of a very lean operation and higher Compaction and expansion ratios. These are the same causes the for the higher one Fuel efficiency in comparison with externally ignited gasoline engines to care.
Luft/Kraftstoff-Verhältnisse können auch derart eingestellt werden, dass die katalytische Leistung in einem Fahrzeug verändert wird. Ein Luft/Kraftstoff-Gemisch wird durch ein Verhältnis angegeben, das Äquivalenzverhältnis genannt und durch das Symbol λ dargestellt wird. Das Äquivalenzverhältnis ist durch die folgende Gleichung definiert: Air / fuel ratios may also be adjusted to vary the catalytic performance in a vehicle. An air / fuel mixture is indicated by a ratio called the equivalence ratio and represented by the symbol λ. The equivalence ratio is defined by the following equation:
Ein relativ kleines Luft/Kraftstoff-Verhältnis unter 14,7 (λ < 1) wird als fettes Gemisch charakterisiert, und ein Luft/Kraftstoff-Verhältnis über 14,7 (λ > 1) kann als mageres Gemisch charakterisiert werden. Traditionelle Fahrzeugbenzinmotoren werden bei Stöchiometrie (λ = 1) betrieben, da die meisten vorgeschriebenen Abgase bei Stöchiometrie gleichzeitig reduziert werden können. Wenn Fahrzeugmotoren mit mageren Gemischen betrieben werden, wie etwa Dieselmotoren, können die erzeugten NOx-Verbindungen durch traditionelle Dreiwegekatalyse nicht ausreichend reduziert werden. Daher haben diese Motoren Probleme, die zunehmend strengen Abgasemissionsvorschriften zu erfüllen.One relatively small air / fuel ratio below 14.7 (λ <1) is considered rich Characterized mixture, and an air / fuel ratio over 14.7 (λ> 1) can be considered lean Mixture be characterized. Traditional vehicle gasoline engines be at stoichiometry (λ = 1) operated as most prescribed exhaust gases at stoichiometry can be reduced at the same time. When vehicle engines are operated with lean mixtures, such as Diesel engines, can the generated NOx compounds through traditional three-way catalysis not be reduced sufficiently. Therefore, these engines have problems to meet the increasingly stringent exhaust emissions regulations.
Um die NOx-Emissionen für mit Diesel angetriebene Fahrzeuge zu verbessern, umfassen gegenwärtige Systeme mit selektiver katalytischer Reduktion mittels Harnstoff (SCR) und Mager-NOx-Fallen. SCR mit Harnstoff benutzt eine Harnstoffversorgung ((NH2)2CO) und ein Abgasdosierungssystem, um dem Speisestrom eines großen, spezialisierten Kata lysators Ammoniak (NH3) zuzuführen. Der Ammoniak reduziert dann die NOx-Emissionen über den selektiven Katalysator zu N2. SCR mit Harnstoff erfordert einen getrennten Harnstofftank in einem Fahrzeug und die Entwicklung einer Infrastruktur zur Harnstoffbetankung. Das System mit Mager-NOx-Falle erfordert einen speziell formulierten Dreiwegekatalysator mit einer zusätzlichen NOx-Speicherchemie. Die NOx-Emissionen, die während des mageren Betriebes chemisch gespeichert werden, müssen in einer reinen, kraftstoffreichen Umgebung an der Katalysatoroberfläche freigegeben und reduziert werden. Die häufige Erzeugung von fetten, reduzierenden Abgasimpulsen stellt bedeutende Herausforderungen an Dieselmotorsysteme.To improve NOx emissions for diesel powered vehicles, current selective catalytic reduction systems using urea (SCR) and lean NOx traps include. SCR with urea uses a urea supply ((NH 2 ) 2 CO) and an exhaust dosing system to supply ammonia (NH 3 ) to the feed stream of a large, specialized catalyst. The ammonia then reduces the NOx emissions via the selective catalyst to N 2 . SCR with urea requires egg separate urea tank in a vehicle and the development of a urea refueling infrastructure. The lean NOx trap system requires a specially formulated three-way catalyst with additional NOx storage chemistry. The NOx emissions chemically stored during lean operation must be released and reduced in a clean, fuel-rich environment at the catalyst surface. The frequent generation of rich, reducing exhaust pulses poses significant challenges to diesel engine systems.
Die
Die
ZUSAMMENFASSUNG DER ERFINDUNGSUMMARY OF THE INVENTION
Die vorliegende Erfindung ist ein Verfahren und eine Vorrichtung zum Versorgen eines an Bord befindlichen Reduktionsmittelsystems für eine Dieselnachbehandlung. Die vorliegende Erfindung benutzt Benzin als an Bord befindliches Abgasreduktionsmittel für Dieselmotoren. Ein getrennter Benzintank und Benzinreformer ist in der vorliegenden Erfindung enthalten, um Wasserstoff, Kohlenmonoxid und Stickstoff (fette Verbrennungsprodukte) zu erzeugen, die dazu verwendet werden können, die NOx-Emissionen, die in der NOx-Falle gespeichert sind, zu spülen und zu reduzieren. Die Häufigkeit der Regenerierung der NOx-Falle wird als eine Funktion der Kapazität der NOx-Falle eingestellt.The The present invention is a method and an apparatus for the Supplying an on-board reductant system for diesel after-treatment. The present invention uses gasoline as on-board Exhaust reducing agent for Diesel engines. A separate gas tank and gasoline reformer is in the present invention to hydrogen, carbon monoxide and to produce nitrogen (fat combustion products) which can be used to purge the NOx emissions stored in the NOx trap and to reduce. The frequency The regeneration of the NOx trap is considered as a function of the capacity of the NOx trap set.
KURZBESCHREIBUNG DER ZEICHNUNGENBRIEF DESCRIPTION OF THE DRAWINGS
BESCHREIBUNG DER BEVORZUGTEN AUSFÜHRUNGSFORMDESCRIPTION OF THE PREFERRED Embodiment
Der
zusätzliche
Vorzug der Produkte einer partiellen Oxidation ist, dass die Oxidation
von Kohlenmonoxid Wärme
erzeugen wird, um den thermischen Wirkungsgrad der chemischen Reaktionen
in der NOx-Falle
Die
vorliegende Erfindung umfasst ferner eine Doppel-Kraftstoffabgabeeinrichtung
Obgleich diese Erfindung anhand einiger besonderer Ausführungsformen beschrieben worden ist, ist festzustellen, dass andere Ausführungsformen von einem Fachmann auf dem Gebiet leicht angepasst werden können. Dementsprechend soll der Schutzbereich dieser Erfindung als nur durch die folgenden Ansprüche beschränkt angesehen werden.Although this invention has been described with reference to some particular embodiments, It should be noted that other embodiments by a person skilled in the art in the field can be easily adjusted. Accordingly should the scope of this invention is considered to be limited only by the following claims become.
Claims (5)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US43375802P | 2002-12-16 | 2002-12-16 | |
US60/433758 | 2002-12-16 |
Publications (2)
Publication Number | Publication Date |
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DE10358910A1 DE10358910A1 (en) | 2004-07-15 |
DE10358910B4 true DE10358910B4 (en) | 2006-02-02 |
Family
ID=32595240
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10358910A Expired - Fee Related DE10358910B4 (en) | 2002-12-16 | 2003-12-16 | exhaust aftertreatment |
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DE (1) | DE10358910B4 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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GB2603648B (en) * | 2022-02-03 | 2023-04-26 | Butterworth Colin | Attenuation means for emission neutrality/ harmful emission control "k" |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4342062A1 (en) * | 1992-12-11 | 1994-06-16 | Toyota Motor Co Ltd | Nitrogen-oxide absorbing automotive exhaust cleaning system - absorbs nitrogen oxides when lean fuel flow and liberates nitrogen oxide in atmos. of lesser oxygen concn.; cuts the consumption of reducing agent required for nitrogen oxide regeneration and accelerates regeneration |
DE10018792C1 (en) * | 2000-04-15 | 2001-09-13 | Daimler Chrysler Ag | Motor exhaust gas processing system to reduce hazardous emissions, separates hydrocarbon components with low boiling point into vapor fractions to be reformed and reduced and high boiling point components are returned to the fuel tank |
-
2003
- 2003-12-16 DE DE10358910A patent/DE10358910B4/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4342062A1 (en) * | 1992-12-11 | 1994-06-16 | Toyota Motor Co Ltd | Nitrogen-oxide absorbing automotive exhaust cleaning system - absorbs nitrogen oxides when lean fuel flow and liberates nitrogen oxide in atmos. of lesser oxygen concn.; cuts the consumption of reducing agent required for nitrogen oxide regeneration and accelerates regeneration |
DE10018792C1 (en) * | 2000-04-15 | 2001-09-13 | Daimler Chrysler Ag | Motor exhaust gas processing system to reduce hazardous emissions, separates hydrocarbon components with low boiling point into vapor fractions to be reformed and reduced and high boiling point components are returned to the fuel tank |
Also Published As
Publication number | Publication date |
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DE10358910A1 (en) | 2004-07-15 |
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