EP3990758A1 - Vorrichtung zur abgasnachbehandlung - Google Patents
Vorrichtung zur abgasnachbehandlungInfo
- Publication number
- EP3990758A1 EP3990758A1 EP20735115.6A EP20735115A EP3990758A1 EP 3990758 A1 EP3990758 A1 EP 3990758A1 EP 20735115 A EP20735115 A EP 20735115A EP 3990758 A1 EP3990758 A1 EP 3990758A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flow path
- annular
- particle filter
- exhaust gas
- flow
- 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.)
- Withdrawn
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
- F01N3/10—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
- F01N3/2892—Exhaust flow directors or the like, e.g. upstream of catalytic device
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features having two or more separate purifying devices arranged in series
- F01N13/0097—Exhaust or silencing apparatus characterised by constructional features 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
- 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
-
- 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
-
- 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
- F01N2240/20—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 flow director or deflector
-
- 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
- F01N2250/00—Combinations of different methods of purification
- F01N2250/02—Combinations of different methods of purification filtering and catalytic conversion
-
- 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
- F01N2470/00—Structure or shape of exhaust gas passages, pipes or tubes
- F01N2470/22—Inlet and outlet tubes being positioned on the same side of the 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
- F01N2470/00—Structure or shape of exhaust gas passages, pipes or tubes
- F01N2470/24—Concentric tubes or tubes being concentric to housing, e.g. telescopically assembled
-
- 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
Definitions
- the invention relates to a device for exhaust gas aftertreatment with a first tubular flow path, with a deflection area and with a second annular flow path, the tubular flow path being formed by an inner tube and the annular flow path by an im
- Outer tube running essentially parallel to the inner tube is formed between the inner tube and the outer tube, and the deflection region is designed to deflect the exhaust gas flow from the tubular flow path into the annular flow path.
- catalysts are used, among other things, which enable the conversion of exhaust gas components into less harmful substances.
- catalysts are in
- the so-called ring catalytic converter which has a tubular flow path, which is followed by a flow deflection and then an annular flow path, the tubular flow path being enclosed by the annular flow path.
- a relatively long flow path for the exhaust gas can thus be implemented even with a possible short overall length of the catalytic converter. This favors, for example, the mixing of the exhaust gas, or extends the time needed to convert one injected into the exhaust gas flow
- Ring catalytic converters can be used, for example, as classic 3-way catalytic converters in the exhaust system of a gasoline engine, or, for example, as
- Installation space, in particular the overall length, is small.
- the object of the present invention is to create a device which enables optimized exhaust gas aftertreatment and, in particular, filtering of particles carried along in the exhaust gas, the device being intended to be particularly short.
- the object with regard to the device is achieved by a device having the features of claim 1.
- Flow path is formed in the annular flow path, the device having an annular catalytically active support body and an annular particle filter, the support body and the particle filter being arranged in the annular flow path.
- a device for exhaust gas treatment constructed in this way is also called
- Ring catalyst called. Starting from a flow inlet, the exhaust gas flows through a tubular flow path in the center of the ring catalytic converter. The exhaust gas flows from the tubular flow path into a deflection area in which the exhaust gas is preferably deflected by 180 degrees.
- the exhaust gas flows out of the flow path via a flow outlet
- the tubular flow path essentially serves to mix the flowing exhaust gas and thus to homogenize the exhaust gas flow and the
- the elements provided for exhaust gas purification and exhaust gas aftertreatment are arranged in the annular flow path.
- This can preferably be ring-shaped metallic honeycomb bodies with catalytically active ones
- the ring-shaped elements can, for example, also be formed from a plurality of individual elements arranged next to one another in the circumferential direction or one behind the other in the axial direction.
- cross section of the first flow path and / or the second flow path tapers or widens conically in the direction of flow.
- the cross section of the flow paths can be constant along the direction of flow. This is the case, for example, when the inner tube and the outer tube are arranged parallel to one another. If the inner tube and / or the outer tube are conical along the respective axial extension, the configuration can also result in conically tapering and / or conically widening flow paths.
- a conical taper can, for example, achieve a concentration of the flow, while an expansion can be used to fan out the flow. In this way, for example, the resulting pressure loss can also be influenced.
- the inner tube and the outer tube are arranged concentrically to one another. This results in a constant flow cross section along the circumference of the annular flow path. This can change along the axial direction, but remains the same in relation to one another in the circumferential direction due to the concentric alignment of the two tubes to one another.
- Direction of flow of the particle filter is arranged after the catalytically active support body. This is advantageous in order to achieve the highest possible temperature of the exhaust gas on the catalytically active support body and the resulting
- a further particle filter is arranged in the deflection area, the particle filter in the deflection area being designed with larger pores than the ring-shaped particle filter in the second flow path.
- An additional upstream particle filter is advantageous in order to increase the overall particle separation.
- Carrier body instead, whereby at least the larger particles are filtered out of the exhaust gas flow. This increases the overall service life of the system, since the risk of the carrier body becoming blocked is reduced. Furthermore, the uptake of particles in the ring-shaped filter is also reduced, which is particularly positive for the resulting pressure loss, since this is lower as a result.
- the ring-shaped particle filter has a cross section that widens or tapers conically in the direction of flow.
- the jacket delimiting the particle filter outward in the radial direction can be conical.
- the one forming the filter body The matrix can, for example, have a constant cross section in the direction of flow.
- the ring-shaped particle filter has a filter matrix which has a cross-section that tapers or widens in the direction of flow.
- the coarse-pored particle filter is designed as a coating of a wall area in the deflection area.
- the coarse-pored filter can, for example, be applied as a thin layer of a fleece to the wall area of the deflection area as a coating.
- the deflection area is formed by a cover-like element which is connected to the outer tube in a gas-tight manner.
- the inside of the cover-like element can have a geometry which is adapted to the respective ring catalytic converter and which favors the flow deflection.
- the cover-like element in the interior of the ring catalytic converter forms a baffle wall for the exhaust gas, the baffle wall having a coating that acts as a particle filter.
- Fig. 1 is a sectional view through a ring catalyst
- tubular flow path the deflection area, the annular flow path and the catalysts and particle filters arranged therein are shown.
- FIG. 1 shows a ring catalytic converter 1. This has a centrally located first tubular flow path 2 through which exhaust gas can flow along the direction of flow 3.
- the tubular flow path 2 is delimited in the radial direction by an inner tube 4.
- the deflection region 5 is arranged downstream of the tubular flow path 2 in the flow direction 3.
- the deflection area 5 is formed from a cover-like element 6 against which the exhaust gas flowing through the tubular flow path 2 flows. As a result of the impact on the cover-like element 6, the exhaust gas is deflected outward in the radial direction and finally into one of the
- the exhaust gas then flows through the second annular flow path 8 through several elements arranged in this flow path 8 to the
- annular catalytic converter 9 which, for example, has a catalytically active coating in order to be able to promote the conversion of the exhaust gas.
- a particle filter 10 is arranged downstream of the catalytic converter 9 and is provided for filtering the exhaust gas that has flowed through the catalytic converter 9.
- the catalytic converter 9 and the particle filter 10 are each constructed in an annular manner.
- the second annular flow path 8 is delimited in the radial direction inward by the inner pipe 4 and in the radial direction outward by the outer pipe
- the inner tube 4 and the outer tube 12 are arranged concentrically and parallel to one another. This results in a in the circumferential direction
- a non-concentric arrangement of the tubes to one another can also be selected.
- a filter layer 11 is arranged on the inner wall of the cover-like element 6, which acts as a coarse filter for the particles carried along in the exhaust gas.
- the filter layer 11 is preferably more coarse-pored than that Particle filter 10 is formed.
- the aim of the filter layer 11 is to pre-filter the exhaust gas in order to subsequently prevent the catalytic converter 9 or the particle filter 10, which is more fine-pored than the filter layer 11, from becoming blocked.
- a honeycomb body acting as a filter can also be inserted into the deflection region 5
- the advantage of the filter layer 11 is that the pressure loss it causes and in particular the negative influence on the gas flow is very small. This is particularly advantageous because, for the best possible effect of the catalytic converter and the particle filter, the most homogeneous flow distribution possible over the cross section of the flow paths 2, 8 and also the most uniform possible concentration distribution of the exhaust gas should be achieved.
- the exemplary embodiment in FIG. 1 in particular does not have a restrictive character and serves to illustrate the concept of the invention.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019209303.5A DE102019209303A1 (de) | 2019-06-26 | 2019-06-26 | Vorrichtung zur Abgasnachbehandlung |
| PCT/EP2020/067590 WO2020260333A1 (de) | 2019-06-26 | 2020-06-24 | Vorrichtung zur abgasnachbehandlung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3990758A1 true EP3990758A1 (de) | 2022-05-04 |
Family
ID=71266638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20735115.6A Withdrawn EP3990758A1 (de) | 2019-06-26 | 2020-06-24 | Vorrichtung zur abgasnachbehandlung |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20220106899A1 (de) |
| EP (1) | EP3990758A1 (de) |
| CN (1) | CN114008307A (de) |
| DE (1) | DE102019209303A1 (de) |
| WO (1) | WO2020260333A1 (de) |
Family Cites Families (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2159712T3 (es) * | 1995-11-23 | 2001-10-16 | Scambia Ind Dev Ag | Procedimiento para la fabricacion de un cuerpo de catalizador para el tratamiento catalitico de gas, cuerpo de catalizador y catalizador. |
| JP2006515401A (ja) * | 2003-01-14 | 2006-05-25 | エミテック ゲゼルシヤフト フユア エミツシオンス テクノロギー ミツト ベシユレンクテル ハフツング | 入れ子式に位置する往流領域及び還流領域を備え同じ側で排ガスの流出入を行う省スペース形排ガス後処理装置 |
| DE102004024685A1 (de) * | 2004-05-19 | 2005-12-15 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Katalysator-Trägerkörper für einen motornah einzusetzenden katalytischen Konverter |
| WO2007076978A2 (de) * | 2005-12-22 | 2007-07-12 | Ark-Holding Ag | Partikelfilteranordnung |
| DE502006009201D1 (de) * | 2005-12-22 | 2011-05-12 | Ark Holding Ag | Partikelfilteranordnung und Verfahren zum Filtern von Abgasen |
| DE202006011281U1 (de) * | 2006-07-21 | 2006-09-28 | Hjs Fahrzeugtechnik Gmbh & Co. Kg | Abgasreinigungsanlage |
| US7614215B2 (en) * | 2006-09-18 | 2009-11-10 | Cummins Filtration Ip, Inc. | Exhaust treatment packaging apparatus, system, and method |
| DE102006048045A1 (de) * | 2006-10-11 | 2008-04-17 | Daimler Ag | Abgasreinigungsanlage für eine Brennkraftmaschine |
| JP5628413B2 (ja) * | 2010-05-05 | 2014-11-19 | ビーエーエスエフ コーポレーション | 触媒化煤煙フィルターおよび排出処理システムおよび方法 |
| SE535220C2 (sv) * | 2010-10-14 | 2012-05-29 | Scania Cv Abp | Arrangemang för att införa ett vätskeformigt medium i avgaser från en förbränningsmotor |
| DE102011015512A1 (de) * | 2011-03-30 | 2012-10-04 | Dif Die Ideenfabrik Gmbh | Kompakte Abgasbehandlungseinheit mit Mischbereich und Verfahren zur Vermischung eines Abgases |
| DE102012210456A1 (de) * | 2012-06-21 | 2013-12-24 | Bayerische Motoren Werke Aktiengesellschaft | Abgassystem für den Verbrennungsmotor eines Fahrzeugs |
| DE102013210799C5 (de) * | 2013-06-10 | 2020-07-09 | Eberspächer Exhaust Technology GmbH & Co. KG | Abgasanlage einer Brennkraftmaschine |
| JP6153793B2 (ja) * | 2013-07-10 | 2017-06-28 | 日野自動車株式会社 | パティキュレートフィルタの再生異常判定装置 |
| US9371764B2 (en) * | 2013-08-01 | 2016-06-21 | GM Global Technology Operations LLC | After-treatment component |
| EP3184767B1 (de) * | 2015-12-23 | 2019-07-03 | Volvo Car Corporation | Katalytischer konverter und abgasnachbehandlungsanordnung |
| DE102016118972A1 (de) * | 2016-10-06 | 2018-04-12 | Man Diesel & Turbo Se | Abgasnachbehandlungssystem und Brennkraftmaschine |
| US10954841B2 (en) * | 2017-10-05 | 2021-03-23 | Caterpillar Inc. | Diesel exhaust fluid mixing |
| DE102017124032A1 (de) * | 2017-10-16 | 2019-04-18 | Eberspächer Exhaust Technology GmbH & Co. KG | Abgas/Reaktionsmittel-Mischbaugruppe |
| US20200003103A1 (en) * | 2018-06-28 | 2020-01-02 | Tenneco Automotive Operating Company Inc. | Exhaust aftertreatment system for an engine |
-
2019
- 2019-06-26 DE DE102019209303.5A patent/DE102019209303A1/de active Pending
-
2020
- 2020-06-24 WO PCT/EP2020/067590 patent/WO2020260333A1/de not_active Ceased
- 2020-06-24 CN CN202080043838.2A patent/CN114008307A/zh active Pending
- 2020-06-24 EP EP20735115.6A patent/EP3990758A1/de not_active Withdrawn
-
2021
- 2021-12-16 US US17/553,021 patent/US20220106899A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| US20220106899A1 (en) | 2022-04-07 |
| WO2020260333A1 (de) | 2020-12-30 |
| CN114008307A (zh) | 2022-02-01 |
| DE102019209303A1 (de) | 2020-12-31 |
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