WO2006131238A1 - Dispositif de post-traitement des gaz d'echappement - Google Patents

Dispositif de post-traitement des gaz d'echappement Download PDF

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Publication number
WO2006131238A1
WO2006131238A1 PCT/EP2006/005137 EP2006005137W WO2006131238A1 WO 2006131238 A1 WO2006131238 A1 WO 2006131238A1 EP 2006005137 W EP2006005137 W EP 2006005137W WO 2006131238 A1 WO2006131238 A1 WO 2006131238A1
Authority
WO
WIPO (PCT)
Prior art keywords
exhaust gas
housing
exhaust
gas outlet
aftertreatment device
Prior art date
Application number
PCT/EP2006/005137
Other languages
German (de)
English (en)
Inventor
Werner Ladenburger
Original Assignee
Daimlerchrysler Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daimlerchrysler Ag filed Critical Daimlerchrysler Ag
Publication of WO2006131238A1 publication Critical patent/WO2006131238A1/fr

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
    • F01N3/2882—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
    • 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
    • F01N2230/00—Combination of silencers and other devices
    • F01N2230/04—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
    • 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

Definitions

  • the present invention relates to an exhaust aftertreatment device according to the preamble of claim 1, and more particularly to such an exhaust aftertreatment device for use with diesel engines, especially commercial vehicles.
  • This known exhaust aftertreatment device which forms the basis for the preamble of claim 1, has a housing with an exhaust gas inlet connection and an exhaust gas outlet connection as well as a plurality of catalyst modules arranged parallel in the housing.
  • the housing includes a plurality of intermediate walls for forming chambers.
  • the catalyst modules are passed through the intermediate walls and each contain a plurality of sections with different catalyst elements, which are positioned in the individual chambers.
  • the exhaust gas flowing into a first chamber of the housing via the exhaust gas inlet connection is produced by means of corresponding gas inlet valves. introduced into the first sections of the catalyst modules and finally passed through corresponding gas outlet guides from the last sections of the catalyst modules in a final chamber of the housing, which is in fluid communication with the exhaust gas outlet port for discharging the exhaust gases from the exhaust gas aftertreatment device.
  • One approach to avoiding water entry into the interior of the exhaust aftertreatment device is to install the exhaust aftertreatment device at a relatively high location on the vehicle or to route the exhaust exit port via a pipe connection to a relatively high location on the vehicle.
  • these measures are not always possible depending on the vehicle type, require additional components and are more expensive to install or are due to the exhaust gas outlet to avoid unfavorable locations on the vehicle.
  • the present invention is therefore based on the object to provide an exhaust gas aftertreatment device, which prevents water penetration into the interior or at least significantly more difficult without further measures.
  • This object is achieved according to a first aspect by an exhaust aftertreatment device having the features of claim 1.
  • Advantageous embodiments and modifications of the invention are the subject of the dependent claims.
  • the exhaust aftertreatment device includes a housing; an exhaust gas inlet port and an exhaust gas outlet port provided on the housing; and at least one exhaust gas purification member disposed in the housing, the gas inlet guide of which is in fluid communication with the exhaust gas inlet port of the housing, and the gas outlet guide of which is in fluid communication with the exhaust gas outlet port of the housing.
  • the exhaust gas outlet connection is connected to the interior of the housing via an exhaust gas pipe, wherein the end of the exhaust gas pipe facing away from the exhaust gas outlet connection is in fluid communication with the gas outlet guide of the at least one exhaust gas cleaning element and the exhaust gas pipe has a riser pipe section.
  • the riser section extends substantially to the top of the housing, so that the upper end of the riser section is positioned as high as possible.
  • the riser section may be substantially vertical or obliquely oriented and may be substantially rectilinear or may be single or multiple curved.
  • the exhaust aftertreatment device includes a housing; an exhaust gas inlet port and an exhaust gas outlet port provided on the housing; and at least one exhaust gas purification member disposed in the housing, the gas inlet guide of which is in fluid communication with the exhaust gas inlet port of the housing, and the gas outlet guide of which is in fluid communication with the exhaust gas outlet port of the housing.
  • the exhaust gas outlet connection is connected to the interior of the housing via an exhaust pipe, the end of the exhaust pipe facing away from the exhaust gas outlet connection is in fluid communication with a housing chamber, which in turn is in fluid communication with the gas outlet guide of the at least one exhaust gas purification element, and the fluid connections are only above one certain height of the housing provided.
  • the riser construction of the second aspect also offers an advantage over the riser section version in that once water has entered the housing, it can simply flow out of the riser through the exhaust pipe and the exhaust exit port.
  • the fluid connections are provided only in the substantially upper region of the housing.
  • the fluid connections can be, for example, through holes or perforations in a partition wall of the housing chamber and / or pipe connections between the housing chamber and the gas outlet guide of the at least one exhaust gas purification element.
  • the at least one exhaust gas purification element is encased with a thermal insulation, at least in the region of the riser chamber, in order to prevent a thermal shock of the exhaust gas purification element due to penetrating water.
  • the exhaust gas outlet connection is guided horizontally, vertically downwards or at an angle downwards out of the housing.
  • a plurality of exhaust gas purification elements are provided in the housing, the gas outlet guides are each in fluid communication with the end of the gas pipe facing away from the exhaust gas outlet.
  • the at least one exhaust gas purification element contains at least one catalyst element and / or at least one filter element, and the housing with the at least one exhaust gas purification element and the exhaust gas pipe also has a sound damping function.
  • FIG. 1 is a schematic perspective view of an exhaust aftertreatment device according to a first preferred embodiment of the present invention, with an "open" housing;
  • FIG. 2 is a schematic perspective view of an exhaust aftertreatment device according to a second preferred embodiment of the present invention having an "open" housing;
  • FIG. 3 shows a schematic representation for explaining the mounting position of the exhaust gas aftertreatment device according to the invention on a vehicle
  • FIGS. 1 to 4 are schematic perspective views of an exhaust aftertreatment device according to a third preferred embodiment of the present invention having an "open" housing.
  • FIGS. 1 to 4 wherein identical components and components are each identified by the same reference numerals.
  • the exhaust aftertreatment device is applied to a diesel engine of a commercial vehicle, without the invention being limited to this use.
  • FIGS. 1, 2 and 4 each show an exhaust aftertreatment device 10 with a watertight housing 12, the shell of which is omitted from the drawings to illustrate the structure inside the exhaust aftertreatment device 10.
  • the housing 12 has (on the left in FIGS. 1, 2 and 4) an exhaust gas inlet port 14 which is connected via an exhaust pipe (not shown) to the exhaust manifold of the diesel engine (not shown) and (bottom right in FIGS. 1, 2 and 4) 4) an exhaust gas outlet connection 16, which is connected directly or optionally via a further pipeline to the environment.
  • the housing 12 is divided by intermediate walls 17a-c into a plurality of chambers 20a-d.
  • a plurality of mutually parallel tubular exhaust gas cleaning elements 18 are also provided, which are guided sealed with their respective sections through the intermediate walls 17 a-c.
  • These exhaust gas purification elements 18 consist of several sections which contain different catalyst elements and / or filter elements for the purification of the exhaust gases flowing through them.
  • the exhaust gases flowing through the exhaust gas inlet connection 14 first pass into an (left-hand) inlet chamber 20a, which is delimited by the housing 12 and the first intermediate wall 17a. and flow from there through corresponding gas inlet guides into the first sections of the plurality of exhaust gas purification elements 18, which pierce the first partition 17a. After flowing through all sections of the plurality of exhaust gas purification elements 18, the purified exhaust gases pass through corresponding gas outlet guides in the (right) output chamber 20 b, which is bounded by the housing 12 and a second partition 17 b.
  • a further intermediate wall 17c is provided in the housing 12, which divides the space bounded by the first and second intermediate walls 17a, 17b into two further chambers 20c and 20d.
  • the second intermediate wall 17b is formed with through-holes 29, perforations or the like, so that the exhaust gases which have passed through the exhaust-gas cleaning elements 18 pass from the outlet chamber 20b into the adjacent chamber 20c. From this chamber 20 c, the purified exhaust gases can flow through through holes 28, perforations or the like in the third partition 17 c in the last chamber 2 od, from which they finally flow out of the housing 12 via the exhaust gas outlet port 16.
  • the present invention is not limited to an exhaust aftertreatment device with such an arrangement of partitions 17a-c, chambers 20a-d and exhaust gas cleaning elements 18, but rather that the arrangements and the number of exhaust gas cleaning elements 18 and the Chambers 20 in the housing 12 can be basically arbitrary.
  • the exhaust gas outlet port 16 of the housing 12 projects vertically downwards in the first embodiment of FIG. while horizontally extending from the housing 12 in the second embodiment shown in Fig. 2.
  • the exhaust gas outlet connection 16 can of course also be guided downward out of the housing 12 at an angle.
  • the position of the exhaust gas outlet port 16 is not limited to that shown in FIGS. 1 and 2.
  • the exhaust gas outlet connection 16 is connected directly to the environment so that the cleaned exhaust gases are released to the environment at this point.
  • this further tubular element is usually not guided to a higher position on the vehicle.
  • a water-compatible rear silencer may be integrated in this further tubular element, if necessary.
  • the exhaust gas outlet port 16 is connected to the interior of the housing 12 via an exhaust pipe 24. More precisely, the end of this exhaust pipe 24 facing away from the exhaust gas outlet connection 16 is in fluid communication with the last chamber 20 d, into which the cleaned exhaust gases are emitted from the exhaust gas purification elements 18.
  • the exhaust pipe 24 includes a riser section 22, which is preferably close extends to the top of the housing 12, so that the upper end of this riser section 22 is positioned as high as possible.
  • This riser section 22 of the exhaust pipe 24 at least substantially prevents or impedes the ingress of water into the interior of the housing 12, for example in water traversal, spray application, cleaning in car washes, steam jet cleaning and the like on which the exhaust aftertreatment device 10 is mounted ,
  • the vehicle operation remains possible despite partially filled exhaust pipe 24 or riser section 22, since the exhaust pressure of the engine is higher than the hydrostatic pressure of the rising water.
  • the wad height w of the vehicle can be increased approximately to the height of the frame 26, which is sufficient in most cases, although the gas outlet port 16 of the exhaust aftertreatment device 10 as usual is much lower.
  • no pipeline connected to the exhaust outlet port 16 is required, which is led to a higher location on the vehicle, and also the exhaust aftertreatment device 10 itself need not be mounted at a higher location on the vehicle.
  • the riser section 22 is rectilinear and vertically aligned.
  • the riser section 22 is provided at the end of the exhaust pipe 22, so that the end of the riser section 22 coincides with the end of the exhaust pipe 24.
  • the present invention is not limited only to this embodiment of the exhaust pipe 24 and the riser pipe section 22.
  • the riser section 22 need not necessarily be vertically aligned, it should only extend beyond a certain vertical height to perform the function of the present invention.
  • the riser section 22 does not necessarily have to be rectilinear, but instead can also run simply or multiply curved.
  • the third embodiment shown in FIG. 4 differs from the two exemplary embodiments of FIGS. 1 and 2 in that, instead of the riser pipe section 22 of the exhaust pipe 24, a riser chamber connected to the exhaust pipe 24 is provided.
  • this riser is formed by the last chamber 2Od of the housing 12 bounded by the first and third diaphragms 17a, 17c.
  • the exhaust pipe 24 connected to the exhaust gas outlet port 16 of the housing 12 in this case has no riser section 22, but ends already in the lower region of the riser chamber 2Od. It is thus possible for water to enter this riser chamber 2Od, for example, at lower watt depths w.
  • the perforations or perforations 28 in the third intermediate wall 17c are only above a certain minimum height of the housing 12, ie preferably only in the upper region of the housing Housing 12 is formed. The wading depth w is thus determined in this case by the height of the lowest perforations or perforations 28.
  • the through holes 29 are distributed in the second partition 17 b over the entire housing height, it is also possible that the through holes 29 are formed in the second partition 17 b only above a certain minimum height. In this way, a buffer chamber 20c can be formed which, if the vehicle only exceeds the wading depth w for a short time, can prevent water from penetrating into the outlet chamber 20b and thus into the exhaust gas purification elements 18.
  • the fluid connections between the riser chamber 20 d and the outlet chamber 20 b may alternatively or additionally also be formed by pipe connections 30, which of course may also be arranged only in the upper region of the riser chamber 20 d.
  • the exhaust gas Cleaning elements 18 at least in the region of the riser chamber 2Od with a thermal insulation (not shown) to be encased in order to prevent damage to the exhaust gas cleaning elements 18 by thermal shock in contact with water entering.
  • a particular advantage of the embodiment of FIG. 4 is that water once penetrated into the riser chamber 2Od can easily drain off again through the exhaust pipe 24 and the exhaust gas outlet connection 16.
  • water should penetrate into the housing 12 despite the riser section 22, this can only be discharged again via evaporation.

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  • 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)
  • Exhaust Silencers (AREA)

Abstract

La présente invention concerne un dispositif de post-traitement des gaz d'échappement (10), destiné en particulier à des moteurs diesel de véhicules utilitaires. Le dispositif de post-traitement des gaz d'échappement (10) comprend un boîtier (12), un raccord d'entrée de gaz d'échappement (14) et un raccord de sortie de gaz d'échappement (16) qui se trouvent contre le boîtier (12); au moins un élément de purification des gaz d'échappement (18) disposé dans le boîtier (12), dont le système de guidage d'entrée de gaz est en liaison fluidique avec le raccord d'entrée de gaz d'échappement (14) du boîtier (12), et dont le système de guidage de sortie de gaz est en liaison fluidique avec le raccord de sortie de gaz d'échappement (16) du boîtier (12). Le raccord de sortie de gaz d'échappement (16) est raccordé avec l'intérieur du boîtier (12) par une tubulure d'échappement (24), l'extrémité de la tubulure d'échappement (24), opposée au raccord de sortie de gaz d'échappement (16), étant en liaison fluidique avec le système de guidage de sortie de gaz du/des élément(s) de purification de gaz d'échappement (18) par l'intermédiaire d'une section de tube montant (22) de la tubulure d'échappement (24), ou par l'intermédiaire d'une chambre de montée (20d), de sorte que la pénétration d'eau dans le boîtier (12) peut être évitée, sans mesures supplémentaires, même dans le cas d'un raccord de sortie de gaz d'échappement (16) monté relativement bas sur le véhicule.
PCT/EP2006/005137 2005-06-04 2006-05-30 Dispositif de post-traitement des gaz d'echappement WO2006131238A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005025738A DE102005025738A1 (de) 2005-06-04 2005-06-04 Abgasnachbehandlungsvorrichtung
DE102005025738.0 2005-06-04

Publications (1)

Publication Number Publication Date
WO2006131238A1 true WO2006131238A1 (fr) 2006-12-14

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PCT/EP2006/005137 WO2006131238A1 (fr) 2005-06-04 2006-05-30 Dispositif de post-traitement des gaz d'echappement

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WO (1) WO2006131238A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020114327A1 (de) 2020-05-28 2021-12-02 Gxc Coatings Gmbh Anti-Beschlag-Beschichtung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4579194A (en) * 1984-03-01 1986-04-01 Nissan Motor Co., Ltd. Muffler with catalyst for internal combustion engine
JPH05237397A (ja) * 1992-02-25 1993-09-17 Yamaha Motor Co Ltd 触媒コンバータ
JPH11117723A (ja) * 1997-10-09 1999-04-27 Yamaha Motor Co Ltd 触媒装着マフラー
DE10209577A1 (de) * 2001-03-05 2002-09-19 Honda Motor Co Ltd Schalldämpfer mit Katalysator
EP1475522A2 (fr) * 2003-04-11 2004-11-10 MAN Nutzfahrzeuge Aktiengesellschaft Dispositif combiné de traitement/ d'amortissement de gaz d' échappement dans la ligne d'échappement d'un moteur à combustion interne

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0073270A1 (fr) * 1981-09-02 1983-03-09 Deere & Company Dispositif d'échappement pour véhicules automobiles
DE10356000B4 (de) * 2003-11-27 2006-01-12 J. Eberspächer GmbH & Co. KG Schalldämpfer mit integriertem Katalysator

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4579194A (en) * 1984-03-01 1986-04-01 Nissan Motor Co., Ltd. Muffler with catalyst for internal combustion engine
JPH05237397A (ja) * 1992-02-25 1993-09-17 Yamaha Motor Co Ltd 触媒コンバータ
JPH11117723A (ja) * 1997-10-09 1999-04-27 Yamaha Motor Co Ltd 触媒装着マフラー
DE10209577A1 (de) * 2001-03-05 2002-09-19 Honda Motor Co Ltd Schalldämpfer mit Katalysator
EP1475522A2 (fr) * 2003-04-11 2004-11-10 MAN Nutzfahrzeuge Aktiengesellschaft Dispositif combiné de traitement/ d'amortissement de gaz d' échappement dans la ligne d'échappement d'un moteur à combustion interne

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 017, no. 700 (C - 1145) 21 December 1993 (1993-12-21) *
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 09 30 July 1999 (1999-07-30) *

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Publication number Publication date
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