EP1437489B2 - Système pour gaz d'échappement - Google Patents

Système pour gaz d'échappement Download PDF

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Publication number
EP1437489B2
EP1437489B2 EP03024193A EP03024193A EP1437489B2 EP 1437489 B2 EP1437489 B2 EP 1437489B2 EP 03024193 A EP03024193 A EP 03024193A EP 03024193 A EP03024193 A EP 03024193A EP 1437489 B2 EP1437489 B2 EP 1437489B2
Authority
EP
European Patent Office
Prior art keywords
exhaust pipe
funnel
monolith
exhaust
section
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
Application number
EP03024193A
Other languages
German (de)
English (en)
Other versions
EP1437489B1 (fr
EP1437489A1 (fr
Inventor
Winfried Wilhelm
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eberspaecher Climate Control Systems GmbH and Co KG
Original Assignee
J Eberspaecher GmbH and Co KG
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
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Application filed by J Eberspaecher GmbH and Co KG filed Critical J Eberspaecher GmbH and Co KG
Publication of EP1437489A1 publication Critical patent/EP1437489A1/fr
Publication of EP1437489B1 publication Critical patent/EP1437489B1/fr
Application granted granted Critical
Publication of EP1437489B2 publication Critical patent/EP1437489B2/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • 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
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
    • 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
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • 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
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
    • 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
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/20—Dimensional characteristics of tubes, e.g. length, diameter

Definitions

  • the present invention relates to an exhaust system for an internal combustion engine, in particular of a motor vehicle, with the features of claim 1.
  • Such an exhaust system is for example from the US 5,666,805 and comprises an exhaust pipe, which is connected to a catalyst unit, which contains in a housing a monolith whose cross section is larger than a cross section of the exhaust pipe at a mouth end of the exhaust pipe.
  • the catalyst unit also has a funnel to which the exhaust pipe is connected.
  • the funnel is designed as an angle piece, so that the exhaust pipe and catalyst unit can be mounted with mutually inclined longitudinal central axes.
  • the exhaust pipe is formed at its mouth end and dimensioned so that it can be inserted into the associated funnel end. In the known exhaust system, the exhaust pipe does not protrude into the funnel, but ends in the associated funnel end.
  • a catalyst unit which contains a catalytically active monolith in a housing.
  • a cross section of this monolith is larger than a cross section of an exhaust pipe to which the catalyst unit is to be connected.
  • the housing comprises a funnel, which is connectable at one end to the exhaust pipe and the other end passes into the housing, wherein the funnel expands correspondingly between its ends.
  • the connection point, in which the exhaust pipe is connected to the funnel lies outside a funnel interior.
  • the known catalyst unit also has a arranged in the funnel, longitudinally adjustable flow guide, which defines depending on its relative position through which the exhaust gas flowed through cross section of the monolith, so as to accelerate the achievement of the light-off temperature of the catalyst. The installation of such a flow guide is associated with a relatively high cost.
  • another catalyst unit which has a housing in which a monolith is arranged.
  • the monolith is fixed with a securing or retaining element in the housing.
  • the housing is equipped at its ends with funnels, which taper from the large cross section in the area of the monolith to a small cross section up to a flange.
  • the funnels comprise an outer funnel on each side of the housing and an inner funnel concentrically arranged therein, which is dimensioned such that it covers the cross-section of the monolith as close as possible to the monolith. This ensures that the securing or retaining element is exposed during operation no gas flow.
  • the housing is connected to exhaust pipes. The installation of such additional inner funnel is associated with a relatively high cost.
  • the present invention addresses the problem of providing for an exhaust system of the type mentioned in an improved embodiment, which in particular has a simple structure and is inexpensive to produce.
  • the present invention is based on the general idea, the housing of the catalyst or particulate filter unit and the exhaust pipe to be connected to match so that the exhaust pipe in the hopper of the housing laterally, ie opposite a longitudinal central axis of the monolith and the filter body is inserted from the outside inclined , In this way, the connection of the exhaust pipe to the housing of the catalyst or particle filter unit is simplified.
  • the lateral insertion of the exhaust pipe in the funnel also gives rise to the possibility of selectively generating a desired flow guidance by a corresponding design of the mouth end inside the funnel. In particular, this makes it possible to optimize the distribution of the supplied exhaust gases to the monolith or filter body cross section.
  • formed by the projecting into the funnel interior mouth end between the funnel and the exhaust pipe from an annular gap which is virtually not flowed through during operation and thus causes a thermal insulation for the hopper.
  • the mouth end is arranged so that it lies in a plane whose normal is inclined relative to the longitudinal center line of the exhaust pipe in the mouth end.
  • the mouth end lies in a plane whose normal runs essentially parallel to the longitudinal central axis of the monolith or of the filter body.
  • the exhaust pipe is quasi beveled at its mouth end, whereby the outlet cross-section increases at the mouth end, without having to be expanded, the exhaust pipe.
  • the exhaust gas flow can be widened with the help of the so-designed mouth end in the funnel interior, although the exhaust pipe with its mouth end from the outside, ie from the side facing away from the monolith or from the filter body in the Funnel is inserted.
  • a flow-conducting design at the mouth end can thus be realized in the exhaust system according to the invention without great effort.
  • Fig. 1 and 2 comprises an exhaust system 1 according to the invention and only partially shown at least one, here only in one end portion shown exhaust pipe 2 and a connected thereto catalyst or particulate filter unit 3, which is also shown only in a connected to the exhaust pipe 2 section.
  • the exhaust system 1 is for attachment to an internal combustion engine, not shown here, which may be housed in particular in a motor vehicle, suitable and serves to dissipate the exhaust gases generated by the internal combustion engine.
  • the catalyst or particle filter unit 3 comprises a housing 4, in which at least one monolith or at least one filter body 5 is accommodated.
  • the monolith 5 or the filter body 5 is usually stored or positioned in the housing 4 with a bearing mat, not shown here.
  • the filter body 5 may e.g. be a soot filter.
  • the catalyst or particle filter unit 3 also has a funnel 6, which is connected with a first end 7 to the exhaust pipe 2 and with a second end 8 to the housing 4.
  • the monolith or filter body 5 usually has a cross section 9, which is significantly larger than a cross section 10 of the exhaust pipe 2 in the region of the first funnel end 7. Accordingly, the funnel 6 widens from its first end 7 to its second end 8.
  • the monolith or filter body cross section 9 is usually also larger than a cross section 11 of a mouth end 12 of the exhaust pipe 2.
  • the monolith or filter body cross section 9 and the exhaust pipe cross section 10 are here transversely to the longitudinal center axis 13 of the monolith or filter body 5 or transversely to a Longitudinal center line 14 of the exhaust pipe 2 measured.
  • the orifice cross section 11 is measured in a plane 21, in which the mouth end 12 extends.
  • the exhaust pipe 2 is inserted concentrically with its mouth end 12 in the first funnel end 7, so that the longitudinal center line 14 of the exhaust pipe 2 coincides with a first longitudinal center axis 15 of the funnel 6, as long as the longitudinal center line 14 of the exhaust pipe 2 extends in a straight line. Furthermore, a second longitudinal central axis 16 of the funnel 6 coincides with the longitudinal central axis 13 of the monolith or of the filter body 5, since the monolith or filter body 5 is arranged concentrically with respect to the second funnel end 8.
  • the funnel 6 is shaped so that its ends 7, 8 are inclined towards each other, i. the first longitudinal central axis 15 and the second longitudinal central axis 16 of the funnel 6 do not run parallel to one another but are inclined relative to one another.
  • the exhaust pipe 2 does not axially connect with respect to the longitudinal central axis 13 of the monolith or of the filter body 5, but laterally against the funnel 6.
  • the exhaust pipe 2 is inserted into the first funnel end 7, such that the mouth end 12 of the exhaust pipe 2 protrudes through the first funnel end 7 and projects into a funnel interior 17.
  • the design of the exhaust pipe 2 and the geometry of the first funnel end 7 are coordinated so that the exhaust pipe 2 can be inserted from the monolith or filter body 5 away from the first funnel opening 7 into the funnel interior 17.
  • a perpendicular to the longitudinal center line 14 of the exhaust pipe 2 measured cross section is constant and / or always equal to or smaller than an open inner cross section of the first funnel end 7.
  • the exhaust pipe 2 may be formed so that its longitudinal center line 14 in the hopper interior 17 is rectilinear. Such an exhaust pipe 2 is particularly easy to produce. The insertion of the exhaust pipe 2 in the funnel 6 is characterized very simple.
  • the exhaust pipe 2 is formed so that its longitudinal center line 14 within the hopper interior 17 has a curved course. Accordingly, this longitudinal center line 14 in the hopper interior 17 deviates from the first longitudinal central axis 15 in the first end 7 of the hopper 6.
  • This course of the longitudinal center line 14 is achieved in that the exhaust pipe 2 is bent without changing its cross section in terms of shape and / or surface accordingly. It is important to ensure that the radii of curvature formed are chosen so that the exhaust pipe 2 in the desired manner in the first funnel end 7 can be inserted from the outside.
  • this embodiment is somewhat more expensive to assemble, it opens up greater possibilities for designing the flow guidance in the interior of the catalyst or particle filter unit 3.
  • the exhaust pipe 2 inserted laterally into the funnel 6 is used to influence the flow in the interior of the catalyst or particle filter unit 3.
  • the mouth end 12 in the plane 21 whose normal or perpendicular to the longitudinal center line 14 is inclined at the point of intersection 19 with said mouth end plane 21.
  • this inclination is - as here - chosen so that the muzzle end plane 21 extends substantially parallel to an end face 20 of the monolith and the filter body 5. That is, the normal or vertical of the mouth end plane 21 extends substantially parallel to the longitudinal center axis 13 of the monolith and the filter body 5.
  • the flow guide from the mouth end 12 to the end face 20 of the monolith and the filter body 5 can be influenced and designed specifically.
  • a flow guidance can be expedient in which a symmetrical, in particular uniform, distribution in the monolith or filter body cross-section 9 is formed with regard to gas temperature and / or flow rate.
  • the in the Fig. 1 and 2 shown portion of the exhaust line 1 may be formed at the inlet of the catalyst or particulate filter unit 3, so that then the funnel 6 forms an inlet funnel 6.
  • the catalyst or particle filter unit 3 may be designed according to the invention at its outlet, so that then the funnel 6 is designed as outlet funnel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)

Claims (3)

  1. Système pour gaz d'échappement pour un moteur à combustion, en particulier d'un véhicule automobile,
    - avec un tuyau d'échappement (2) relié à une unité de catalyseur ou de filtre à particules (3), qui, dans un boîtier (4), comprend au moins un monolithe (5) ou au moins un corps de filtre (5), dont la section transversale (9) est supérieure à une section transversale (11) du tuyau d'échappement (2) au niveau de l'une des embouchures (12) du tuyau d'échappement (2),
    - tandis que l'unité de catalyseur ou de filtre à particules (3) comporte un entonnoir (6) auquel est relié le tuyau d'échappement (2),
    - tandis que l'entonnoir (6) comporte un premier axe médian longitudinal (15) au niveau de sa première extrémité (7) raccordée au tuyau d'échappement (2), ainsi qu'un deuxième axe médian longitudinal (16) au niveau de sa deuxième extrémité tournée vers le monolithe (5) ou vers le corps de filtre (5), le deuxième axe médian longitudinal (16) étant incliné par rapport au premier (15),
    - tandis que l'embouchure (12) du tuyau d'échappement (2) est formée et dimensionnée de manière à pouvoir être introduite dans la première extrémité (7) de l'entonnoir,
    caractérisé en ce que
    - le tuyau d'échappement (2) s'engage librement par son embouchure (12) à l'intérieur (17) d'un entonnoir par la première extrémité (7) de l'entonnoir,
    - l'embouchure (12) se trouve dans un plan (21), dont la normale est inclinée par rapport à l'axe médian longitudinal (14) du tuyau d'échappement (2) dans l'embouchure (12),
    - l'embouchure (12) se trouve dans un plan (21) dont la normale est sensiblement parallèle à l'axe médian longitudinal (13) du monolithe (5) ou du corps de filtre (5).
  2. Système pour gaz d'échappement selon la revendication 1,
    caractérisé en ce que
    le tuyau d'échappement (2) comporte un axe médian longitudinal (14) qui se prolonge en ligne droite à l'intérieur (17) de l'entonnoir.
  3. Système pour gaz d'échappement selon la revendication 1,
    caractérisé en ce que
    le tuyau d'échappement (2) présente un axe médian longitudinal (14) qui se prolonge en un coude arrondi ou incurvé ou angulaire à l'intérieur (17) de l'entonnoir.
EP03024193A 2003-01-09 2003-10-21 Système pour gaz d'échappement Expired - Fee Related EP1437489B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2003100384 DE10300384B4 (de) 2003-01-09 2003-01-09 Abgasanlage
DE10300384 2003-01-09

Publications (3)

Publication Number Publication Date
EP1437489A1 EP1437489A1 (fr) 2004-07-14
EP1437489B1 EP1437489B1 (fr) 2006-11-29
EP1437489B2 true EP1437489B2 (fr) 2012-03-07

Family

ID=32478169

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03024193A Expired - Fee Related EP1437489B2 (fr) 2003-01-09 2003-10-21 Système pour gaz d'échappement

Country Status (2)

Country Link
EP (1) EP1437489B2 (fr)
DE (2) DE10300384B4 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101000224B1 (ko) 2008-12-04 2010-12-10 현대자동차주식회사 차량용 촉매장치
DE102010006829B4 (de) * 2010-02-03 2013-08-14 Benteler Automobiltechnik Gmbh Abgasanlage
DE102011079906A1 (de) * 2011-07-27 2013-01-31 Bayerische Motoren Werke Aktiengesellschaft Abgasanlage für ein Kraftfahrzeug
US10167765B2 (en) * 2016-07-12 2019-01-01 GM Global Technology Operations LLC Exhaust gas seal
CN109404098A (zh) * 2018-12-14 2019-03-01 东风汽车集团有限公司 一种横置后排增压发动机twc及gpf紧耦合热端催化器及排气系统

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4408130A1 (de) † 1994-03-10 1995-09-14 Bayerische Motoren Werke Ag Vorrichtung zur Abgasreinigung bei Brennkraftmaschinen
DE19824428A1 (de) † 1998-05-30 1999-12-02 Daimler Chrysler Ag Abgaskatalysatorkörper mit unterschiedlichen, parallelen Zellstrukturbereichen

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE450274B (sv) * 1985-12-13 1987-06-15 Saab Scania Ab Katalysatorhus ingaende i ett fordons avgassystem
DE3903803A1 (de) * 1989-02-09 1990-08-16 Bayerische Motoren Werke Ag Gehaeuse eines abgaskatalysators
DE4223648C2 (de) * 1992-07-17 1996-02-01 Zeuna Staerker Kg Katalytische Abgasreinigungsvorrichtung
DE4440160C2 (de) * 1993-12-03 1997-02-27 Gen Motors Corp Katalysator-Diffusor
DE9421332U1 (de) * 1994-06-16 1995-10-05 Boysen Friedrich Gmbh Co Kg Vorrichtung zur katalytischen Reinigung bzw. Zerlegung von heißen Abgasen
JP3294036B2 (ja) * 1995-01-26 2002-06-17 日本碍子株式会社 ハニカム触媒コンバータ
WO2000039437A1 (fr) * 1998-12-28 2000-07-06 Corning Incorporated Convertisseur utilise dans le traitement de gaz
DE10002218A1 (de) * 2000-01-20 2001-07-26 Eberspaecher J Gmbh & Co Abgaskatalysator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4408130A1 (de) † 1994-03-10 1995-09-14 Bayerische Motoren Werke Ag Vorrichtung zur Abgasreinigung bei Brennkraftmaschinen
DE19824428A1 (de) † 1998-05-30 1999-12-02 Daimler Chrysler Ag Abgaskatalysatorkörper mit unterschiedlichen, parallelen Zellstrukturbereichen

Also Published As

Publication number Publication date
DE10300384B4 (de) 2005-12-01
DE50305832D1 (de) 2007-01-11
EP1437489B1 (fr) 2006-11-29
DE10300384A1 (de) 2004-07-29
EP1437489A1 (fr) 2004-07-14

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