US20090007551A1 - Exhaust Gas Aftertreatment System - Google Patents
Exhaust Gas Aftertreatment System Download PDFInfo
- Publication number
- US20090007551A1 US20090007551A1 US12/159,406 US15940606A US2009007551A1 US 20090007551 A1 US20090007551 A1 US 20090007551A1 US 15940606 A US15940606 A US 15940606A US 2009007551 A1 US2009007551 A1 US 2009007551A1
- Authority
- US
- United States
- Prior art keywords
- catalytic converter
- scr
- exhaust gas
- injector
- soot
- 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.)
- Abandoned
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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
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
- F01N3/0231—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using special exhaust apparatus upstream of the filter for producing nitrogen dioxide, e.g. for continuous filter regeneration systems [CRT]
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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
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/003—Silencing apparatus characterised by method of silencing by using dead chambers communicating with gas flow passages
- F01N1/006—Silencing apparatus characterised by method of silencing by using dead chambers communicating with gas flow passages comprising at least one perforated tube extending from inlet to outlet of the silencer
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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
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
- F01N1/023—Helmholtz resonators
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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
- 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
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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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
- F01N13/0097—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series the purifying devices are arranged in a single housing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- 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
- F01N13/011—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 purifying devices arranged in parallel
- F01N13/017—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 purifying devices arranged in parallel the purifying devices are arranged in a single housing
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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
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
- F01N3/0335—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with exhaust silencers in a single housing
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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
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
- F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
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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
- F01N3/105—General auxiliary catalysts, e.g. upstream or downstream of the main catalyst
- F01N3/106—Auxiliary oxidation catalysts
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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]
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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
- F01N3/24—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 constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2882—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices
- F01N3/2885—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices with exhaust silencers in a single housing
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- 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
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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
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/003—Silencing apparatus characterised by method of silencing by using dead chambers communicating with gas flow passages
-
- 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
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- 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
An exhaust gas after treatment system for treating exhaust gases from an internal combustion engine is provided. The system includes a soot catalytic converter and an SCR catalytic converter, which reduces NOx-emissions by means of a reagent delivered via an injector located upstream of the SCR catalytic converter. According to the invention the soot catalytic converter is located between the injector and the SCR-catalytic converter.
Description
- The present invention relates to an exhaust gas aftertreatment system for treating exhaust gases from an internal combustion engine, comprising a soot catalytic converter and an SCR catalytic converter, which reduces NOx-emissions by means of a reagent delivered via a nozzle located upstream of the SCR catalytic converter.
- Increasing requirements aimed at reducing exhaust emissions from heavy trucks and buses are leading to ever more advanced systems of exhaust gas aftertreatment. SCR (Selective Catalytic Reduction) is one such system for reducing NOx emissions, in which a reagent, in the form a urea/water solution, for example, is injected upstream of an SCR catalytic converter. DPF (Diesel Particulate Filters), in which the soot is burned by means of NO2 (so-called CRT or Continuously Regenerating Trap), is another system which reduces engine particulate emissions (which consist primarily of carbon). NO2 is produced by means of an oxidation catalytic converter located upstream of the particulate filter.
- Various types of particulate filter exist, of which the so-called “wall flow” cordierite filter has been the most commonly used. Another type of filter that has emerged of late is the so-called “flow-through” filter. The latter is characterized in that it has a lower particulate reduction and is ash-permeable, thereby requiring no servicing.
- The more stringent emission requirements are leading to a need to combine these two types of exhaust gas aftertreatment system, which often presents problems of insufficient installation space.
- In hitherto known combined exhaust gas aftertreatment systems (SCR+DPF), the systems comprise components fitted in the following order:
- Variants exist in which a hydrolysis catalytic converter may also be incorporated, primarily into the SCR catalytic converter, and the particulate filter may be catalytically coated, thereby avoiding the first oxidation catalytic converter downstream of the engine. They are all characterized, however, in that the particulate filter is located upstream of the urea injection. This has been essential where “wall flow” cordierite filters were used, due among other things to the fact that these collect ash, primarily calcium sulfate (i.e. gypsum), which presents problems if urea/water solution is injected upstream. They are further characterized by a considerable porous mass, which absorbs the ammonia formed and thereby makes transient urea dosing more difficult.
- It is desirable to provide an effective exhaust gas aftertreatment system which is more compact that known systems.
- The exhaust gas aftertreatment system according to an aspect of the invention for treating exhaust gases from an internal combustion engine comprises a soot catalytic converter and an SCR catalytic converter, which reduces NOx-emissions by means of a reagent delivered via a nozzle located upstream of the SCR catalytic converter and is characterized in that the soot catalytic converter is located between the nozzle and the SCR catalytic converter. This embodiment of the arrangement makes it possible to assemble multiple system components into one compact unit.
- The invention will be described in more detail below with reference to exemplary embodiments shown in the drawings attached, in which
-
FIG. 1 shows a schematic representation of an internal combustion engine having an exhaust gas aftertreatment system according to the invention, -
FIG. 2 shows in more detail a longitudinal section through a treatment unit forming part of the exhaust gas aftertreatment system according toFIG. 1 , and -
FIG. 3 correspondingly shows a cross-section through the treatment unit according toFIG. 2 . - The
internal combustion engine 10 represented schematically inFIG. 1 comprises anengine block 11 having sixpiston cylinders 12 with aninlet manifold 13 and anexhaust manifold 14. Exhaust gases from the engine are led via anexhaust line 15 to aturbine rotor 17 of aturbocharger unit 16. Theturbine shaft 18 drives thecompressor wheel 19 of the turbocharger unit, which via aninlet line 20 compresses intake air and delivers it via anintercooler 21 to theinlet manifold 13. Fuel is fed to eachcylinder 12 via injection devices (not shown). Although the figure illustrates a six-cylinder engine, the invention may also be used in conjunction with other cylinder configurations. - Exhaust gases that have passed through the
turbocharger unit 16 are led onwards via theexhaust line 22 to an oxidationcatalytic converter 23 for the production of NO2 for the exhaust gas flow. Downstream of the oxidation catalytic converter is aunit 24 for removing soot particles and NOx from the exhaust gas flow, which unit will be described with reference to FIG. 2. Aninjector 25 for mixing a reagent, such as urea or ammonia, for example, into the exhaust gas flow, is located upstream of theunit 24. - The
unit 24 comprises an ovalcylindrical casing 26 having twoend walls walls inlet pipe 32 extends from the side in through thecasing 26 and via a pipe bend onwards in the longitudinal direction of the casing through the three dividing walls 29-31 to a distributingspace 33 at theend wall 27. - Two
catalytic converter units outer casing 26, in order to form two separateinternal spaces space 36 situated nearest the distributingspace 33 communicates viaperforations 38 with theexhaust inlet 32. Thespace 36 therefore communicates with the distributingspace 33 via theinlet pipe 32. - A further connection between the distributing
space 33 and thespace 36 is provided via apipe 39, which extends between thedistributing space 33 and thespace 37, by the side of the other pipes in thecasing 26. Thepipe 39 is provided with perforations into thespace 36 on the one hand and into thespace 37 on the other. The provision of thepipe 39 allows the otherwise enclosedspace 37 to serve as a sound-damping Helmholtz resonator for sound waves that occur in the exhaust gas flow from theengine 10. In addition, thepipe 39 forms a flow path from thespace 36 to the distributingspace 33 via said perforations, the flow path reducing the pressure gradient into the distributing space and furthermore increasing the scope for gasifying of the reagent in the exhaust gas flow. - The distributing
space 33 distributes the exhaust gas flow entering via theinlet pipe 32 and thepipe 39 to the twocatalytic converter units particulate filter 40 of the soot catalytic converter type. The exhaust gas flow from this particulate filter thereafter passes through an SCR-catalytic converter 41, in which ammonia reacts with NOx to form N2. Finally the exhaust gas flow passes through an oxidation-catalytic converter 42, which removes any residual ammonia from the exhaust gas flow. The exhaust gas flow is then led via anoutlet space 43 to anexhaust outlet 44. - The embodiment of the
aftertreatment unit 24 according to the invention, in which the exhaust gas flow passes through theparticulate filter 40 before it reaches the SCRcatalytic converter 41, allows theinjector 25 to be located advantageously close to theunit 24. Distribution and gasification of the reagent in the exhaust gas flow occurs in thepipes space 33 and theparticulate filter 40. At the same time it becomes possible to locate the particulate filter, the SCR-catalytic converter and the oxidation catalytic converter as acommon unit 24 in one and thesame casing 26. If theinjector 25 were instead to be located between the particulate filter and SCR-catalytic converter, the entire exhaust gas aftertreatment system would have to be configured differently, taking up more space. - The invention must not be regarded as being limited to the exemplary embodiments described above, a number of further variants and modifications being feasible without departing from the scope of the following patent claims. For example, the
aftertreatment unit 24 need not be provided with multiple catalytic converter units arranged in parallel.
Claims (6)
1. An exhaust gas aftertreatment system for treating exhaust gases from an internal combustion engine, comprising a soot catalytic converter and a SCR-catalytic converter, which reduces NOx-emissions by means of a reagent delivered via an injector located upstream of the SCR catalytic converter, wherein the soot catalytic converter is located between the injector and the SCR catalytic converter.
2. The system as claimed in claim 1 , wherein an oxidation catalytic converter is located downstream of the SCR-catalytic converter.
3. The system as claimed in claim 2 , wherein the soot catalytic converter, the SCR catalytic converter and the oxidation catalytic converter are arranged in series inside a common casing.
4. The system as claimed in claim 1 , wherein the casing is divided by internal dividing walls to form distributing spaces at ends of the casing and an acoustically active space situated between the distributing spaces.
5. The system as claimed in claim 1 , wherein the injector for delivering reagent is located alongside a connection for an admission line for exhaust gases from the internal combustion engine.
6. The system as claimed in claim 5 , wherein an oxidation catalytic converter is located in the admission line upstream of the injector.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/SE2006/000113 WO2007086781A1 (en) | 2006-01-24 | 2006-01-24 | Exhaust gas aftertreatment system |
Publications (1)
Publication Number | Publication Date |
---|---|
US20090007551A1 true US20090007551A1 (en) | 2009-01-08 |
Family
ID=38309482
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/159,406 Abandoned US20090007551A1 (en) | 2006-01-24 | 2006-01-24 | Exhaust Gas Aftertreatment System |
Country Status (6)
Country | Link |
---|---|
US (1) | US20090007551A1 (en) |
EP (1) | EP1979586A4 (en) |
JP (1) | JP2009524758A (en) |
CN (1) | CN101336337A (en) |
BR (1) | BRPI0621003A2 (en) |
WO (1) | WO2007086781A1 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110146252A1 (en) * | 2009-12-22 | 2011-06-23 | Silver Ronald G | Canister aftertreatment module |
US20110146253A1 (en) * | 2009-12-22 | 2011-06-23 | Isada Raymond Upano | Exhaust system having an aftertreatment module |
US20110162358A1 (en) * | 2008-07-30 | 2011-07-07 | Emitec Gesellschaft Fur Emissionstechnologie Mbh | Exhaust gas purification system for diesel engines of utility motor vehicles |
US20150117941A1 (en) * | 2012-04-17 | 2015-04-30 | Volvo Lastvagnar Ab | Device for preventing theft of a first vehicle component, which is releasably connected to a second vehicle component |
WO2018075931A1 (en) * | 2016-10-21 | 2018-04-26 | Cummins Emission Solutions Inc. | Substrate shape, geometry, positioning, and/or cell density to improve aftertreatment performance |
US20180199472A1 (en) * | 2015-08-05 | 2018-07-12 | Panasonic Intellectual Property Management Co. Ltd. | Heat dissipating structure and electronic apparatus |
WO2019194784A1 (en) * | 2018-04-02 | 2019-10-10 | Cummins Emission Solutions Inc. | Aftertreatment system including noise reducing components |
US11486289B2 (en) | 2018-07-03 | 2022-11-01 | Cummins Emission Solutions Inc. | Body mixing decomposition reactor |
EP4183986A1 (en) * | 2021-11-19 | 2023-05-24 | Emission Partner GmbH & Co. KG | Exhaust gas system |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011247135A (en) * | 2010-05-25 | 2011-12-08 | Isuzu Motors Ltd | Scr system |
FR3070430B1 (en) * | 2017-08-22 | 2022-05-13 | Psa Automobiles Sa | EXHAUST LINE SILENCER CAN INTEGRATE TWO AMMONIA LEAK TREATMENT CATALYSTS |
Citations (10)
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US6314722B1 (en) * | 1999-10-06 | 2001-11-13 | Matros Technologies, Inc. | Method and apparatus for emission control |
US6615580B1 (en) * | 1999-06-23 | 2003-09-09 | Southwest Research Institute | Integrated system for controlling diesel engine emissions |
US20030221424A1 (en) * | 2000-08-30 | 2003-12-04 | J. Eberspacher Gmbh & Co. | Exhaust cleaning system |
US20040202590A1 (en) * | 2003-04-11 | 2004-10-14 | Eberhard Jacab | Combination exhaust gas post treatment/muffler device in the exhaust gas section of an internal combustion engine |
US6826906B2 (en) * | 2000-08-15 | 2004-12-07 | Engelhard Corporation | Exhaust system for enhanced reduction of nitrogen oxides and particulates from diesel engines |
US20050031514A1 (en) * | 2003-08-05 | 2005-02-10 | Engelhard Corporation | Catalyzed SCR filter and emission treatment system |
US20070012032A1 (en) * | 2005-07-12 | 2007-01-18 | Eaton Corporation | Hybrid system comprising HC-SCR, NOx-trapping, and NH3-SCR for exhaust emission reduction |
US7614214B2 (en) * | 2006-07-26 | 2009-11-10 | Eaton Corporation | Gasification of soot trapped in a particulate filter under reducing conditions |
US7669408B2 (en) * | 2005-12-02 | 2010-03-02 | Eaton Corporation | LNT desulfation strategy with reformer temperature management |
US7874147B2 (en) * | 2007-04-26 | 2011-01-25 | Emcon Technologies Llc | Method and apparatus for a non-catalytic NOx reduction |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB0113226D0 (en) * | 2001-06-01 | 2001-07-25 | Nelson Burgess Ltd | Catalytic converter |
EP1348838A1 (en) * | 2002-03-26 | 2003-10-01 | Siemens Aktiengesellschaft | Exhaust gas purification apparatus and method for regeneration of a particulate filter |
SE523479C2 (en) * | 2003-06-26 | 2004-04-20 | Scania Cv Abp | Exhaust silencer, includes spiral shaped axial and radial exhaust channels for fumes to flow through |
FR2873158B1 (en) * | 2004-07-15 | 2008-11-14 | Peugeot Citroen Automobiles Sa | EXHAUST LINE OF INTERNAL COMBUSTION ENGINE, AND EXHAUST GAS PURIFYING SYSTEM COMPRISING SAME |
DE102004041261A1 (en) * | 2004-08-26 | 2006-03-02 | Daimlerchrysler Ag | Method for operating an exhaust gas purification device of an internal combustion engine, in particular of a motor vehicle |
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2006
- 2006-01-24 BR BRPI0621003-1A patent/BRPI0621003A2/en not_active IP Right Cessation
- 2006-01-24 EP EP06701333A patent/EP1979586A4/en not_active Withdrawn
- 2006-01-24 CN CNA200680051744XA patent/CN101336337A/en active Pending
- 2006-01-24 WO PCT/SE2006/000113 patent/WO2007086781A1/en active Application Filing
- 2006-01-24 US US12/159,406 patent/US20090007551A1/en not_active Abandoned
- 2006-01-24 JP JP2008551215A patent/JP2009524758A/en not_active Withdrawn
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US8596049B2 (en) | 2009-12-22 | 2013-12-03 | Caterpillar Inc. | Exhaust system having an aftertreatment module |
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US20150117941A1 (en) * | 2012-04-17 | 2015-04-30 | Volvo Lastvagnar Ab | Device for preventing theft of a first vehicle component, which is releasably connected to a second vehicle component |
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Also Published As
Publication number | Publication date |
---|---|
BRPI0621003A2 (en) | 2011-11-29 |
CN101336337A (en) | 2008-12-31 |
EP1979586A1 (en) | 2008-10-15 |
JP2009524758A (en) | 2009-07-02 |
WO2007086781A1 (en) | 2007-08-02 |
EP1979586A4 (en) | 2010-03-10 |
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