WO2003002281A1 - Procede de fabrication d'un element etage d'une ligne d'echappement et element etage obtenu - Google Patents
Procede de fabrication d'un element etage d'une ligne d'echappement et element etage obtenu Download PDFInfo
- Publication number
- WO2003002281A1 WO2003002281A1 PCT/FR2002/002103 FR0202103W WO03002281A1 WO 2003002281 A1 WO2003002281 A1 WO 2003002281A1 FR 0202103 W FR0202103 W FR 0202103W WO 03002281 A1 WO03002281 A1 WO 03002281A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- section
- cylindrical section
- cylindrical
- internal
- members
- Prior art date
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
- 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
-
- 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
- F01N13/02—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 silencers in series
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—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
- F01N3/2839—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
- F01N3/2853—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration using mats or gaskets between catalyst body and 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
- F01N3/08—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
- F01N3/2839—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
- F01N3/2853—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration using mats or gaskets between catalyst body and housing
- F01N3/2857—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration using mats or gaskets between catalyst body and housing the mats or gaskets being at least partially made of intumescent material, e.g. unexpanded vermiculite
-
- 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
Definitions
- the present invention relates to a method of manufacturing a stage element of an exhaust line comprising a tubular casing in which are arranged successively at least two internal exhaust gas treatment members.
- internal organs for treating exhaust gases such as for example organs for treating by purification of exhaust gases in order to reduce the polluting emissions and / or internal sound treatment components of these exhaust gases in order to reduce noise at the outlet of the exhaust line.
- the stage element of the exhaust line comprises two internal processing members arranged successively in the same conduit delimited by the envelope.
- the envelope must consist of a tube of variable section along its length.
- it must include two cylindrical sections connected to each other by a section of progressively decreasing diameter, each cylindrical section containing an internal processing member.
- a second tubular section To form such envelopes, it is known to produce the first cylindrical section in a tube and then to attach by welding, at one of its ends, a second tubular section.
- This second tubular section generally consists of two half-shells each in the form of a channel associated with one another by two longitudinal welds.
- a stage element of an exhaust line produced according to this method is relatively expensive to manufacture.
- the object of the invention is to propose a method for manufacturing a stage element of an exhaust line, the cost of implementation of which is reduced.
- the subject of the invention is a method of manufacturing a stage element of an exhaust line comprising a tubular casing. area in which are arranged, successively, at least two internal organs for treating exhaust gases, characterized in that it comprises the steps of:
- the method includes one or more of the following characteristics:
- the first of said internal members is arranged in the first cylindrical section before the flow-forming step of said convergent intermediate section;
- - It comprises a step of making by flow turning, at a free end of the second cylindrical section, a convergent end section of progressively decreasing diameter from said second cylindrical section;
- - It includes a step consisting in adding, to a free end of the second cylindrical section, a prefabricated convergent end section of progressively decreasing diameter from said second cylindrical section;
- the section of the second cylindrical section is less than the section of the first cylindrical section.
- the invention also relates to a stage element of an exhaust line comprising a tubular casing in which are arranged, successively, at least two internal members, characterized in that said internal members are arranged in first and second sections.
- cylindrical sections connected to each other by a converging intermediate section of progressively decreasing diameter, the first and second cylindrical sections and the converging intermediate section having come in one piece in the same tubular blank.
- the stage element comprises one or more of the following characteristics:
- Each of the two internal organs is chosen from a treatment organ for purification of exhaust gases and an acoustic treatment organ for exhaust gases;
- the two internal members are formed by treatment members by purifying the exhaust gases, such as, for example, catalysts;
- the two internal organs are formed by organs for acoustic treatment of exhaust gases.
- FIG. 1 is an elevation view of a stage element of an exhaust line according to the invention
- FIGS. 2A, 2B, 2C, 2D, 2E and 2F are longitudinal section views of the stage element of Figure 1 shown in successive stages of manufacture.
- FIG. 3 is an elevational view of an alternative embodiment of the floor element of Figure 1.
- the stage element 10 of an exhaust line comprises a tubular casing 12 internally delimiting a conduit in which are arranged, successively, two internal organs for treating exhaust gases, respectively 14 and 16 .
- the internal members 14 and 16 are formed by treatment members by purification of the exhaust gases, such as, for example, catalysts.
- the internal member 14 can be constituted by a main catalytic purification member and the internal member 16 can be constituted by a catalytic purification initiation member.
- the catalytic purification members 14 and 16 are each formed, for example, of a ceramic substrate in which gas flow channels are delimited.
- the substrate is loaded with catalytic materials.
- at least one of the exhaust gas treatment devices is as described in US-A-4,632,683.
- the two internal members 14 and 16 can be formed by members for the acoustic treatment of exhaust gases, such as for example the acoustic device described in patent application EP-A-926,320.
- a first of the two internal members 14 and 16 may be formed by a member for acoustic treatment of the exhaust gases, the second being formed by a member for treatment by depollution of the exhaust gases.
- the internal member 14 is formed by a member for acoustic treatment of the exhaust gases and the internal member 16 is formed by a member for treatment by depollution of the exhaust gases.
- the stage element 10 has an inlet 20 for the arrival of the exhaust gases and an outlet 22 for the discharge of the exhaust gases.
- the casing 12 has a first cylindrical section 24 inside which is housed the first internal member 14. Between the cylindrical wall of the section 24 and the first internal member 14 is arranged for example a retaining ply 26.
- the retaining ply 26 is either a ply of the heat-expandable type, or even a ply of ceramic fibers.
- the tubular casing 12 has a second cylindrical section 28 inside which is housed the second internal member 16.
- this member 16 is surrounded by a retaining ply 30 of the same kind as the ply 26 ensuring its immobilization inside the second section 28.
- the axes of the first and second cylindrical sections 24 and 28 are offset angularly. According to a variant, the axes of the first and second cylindrical sections 24 and 28 are offset axially.
- the first and second sections 24, 28 are connected to each other by a converging intermediate section 32 of progressively decreasing diameter. This convergent section is for example delimited by a frustoconical wall.
- the first and second sections each have converging end sections 34, 36 having a progressively decreasing diameter from the cylindrical section considered to the associated end. of the converter.
- These converging end sections are for example delimited by frustoconical walls.
- Each convergent end section is extended by a collar 38, 40 delimiting, respectively, the outlet 22 and the inlet 20 of the converter. These collars are suitable for the connection of the stage element to pipes of the exhaust line.
- the envelope 12 is formed by flow turning in the same blank.
- the first and second cylindrical sections, as well as the converging intermediate section 32, have come in one piece in the same cylindrical blank, this blank having been deformed by flow forming.
- FIGS. 2A to 2F illustrate the successive stages in the manufacture of the stage element of FIG. 1.
- This stage element is formed from a cylindrical metallic section 50 of constant initial diameter visible in FIG. 2A.
- This stretch is, for example, consisting of a tube of constant diameter.
- This section can also be extended in the blank, at at least one of its ends, by a section of different diameter.
- the first internal processing member 14 is first engaged, while being surrounded by the ply 26, inside the blank 50.
- This first internal member 14 is immobilized in the first cylindrical section 24, for example, by a centripetal peripheral retraction of the first cylindrical section 24 in order to ensure a radial pressure on the member 14.
- the method described in patent US-A-5,096,1 1 1 can to be used.
- the converging end section 34 is then produced by flow spinning at one end of the first cylindrical section 24, as illustrated in FIG. 2C.
- the blank 50 is deformed over a part of its length by application to its outer surface of a set of rollers carried by the same rotary tool, these rollers being moved radially relative to the axis of rotation. of the tool while the tool is moved axially along the length of the blank.
- the flow-forming tool, as well as the process used for flow-forming, are described for example in patent US-A-6,018,972.
- the connecting collar 38 is produced simultaneously during the flow turning of the converging end section 34.
- the converging intermediate section 32 is formed by flow spinning, at the other end of the first cylindrical section 24, making it possible to bring the blank into the state illustrated in FIG. 2D.
- the second cylindrical section 28 of smaller diameter, intended to receive the second processing member 16 is also formed. More specifically, a cylindrical section, designated by the reference 52, having a length greater than the length of the second cylindrical section 28 is formed.
- the second internal member 16 surrounded by the retaining ply 30 is then engaged inside the second section. cylindrical section 28 and is immobilized there by retraction of the section 28, as illustrated in FIG. 2F.
- the converging end section 36 and the connecting collar 40 are produced by flow turning at the end of the second cylindrical section 28, by deformation of the portion of the section 52 extending the second cylindrical section 28.
- stage element such as for example a catalytic converter manufactured according to the method described above can be produced from a single flow-forming machine and from the same blank. Thus, its manufacturing cost is reduced.
- a convergent prefabricated end section 60 is attached to the end of the first cylindrical section 28 and is joined thereto by welding or stapling, along a peripheral connection line 62, as illustrated in FIG. 3.
- the method according to the invention can be implemented for a stage element of an exhaust line in which the first and second cylindrical sections are coaxial or angularly offset.
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
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02748958A EP1397219A1 (fr) | 2001-06-20 | 2002-06-18 | Procede de fabrication d'un element etage d'une ligne d'echappement et element etage obtenu |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0108133A FR2826301B1 (fr) | 2001-06-20 | 2001-06-20 | Procede de fabrication d'un element etage d'une ligne d'echappement et element etage obtenu |
FR01/08133 | 2001-06-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003002281A1 true WO2003002281A1 (fr) | 2003-01-09 |
Family
ID=8864567
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2002/002103 WO2003002281A1 (fr) | 2001-06-20 | 2002-06-18 | Procede de fabrication d'un element etage d'une ligne d'echappement et element etage obtenu |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1397219A1 (fr) |
FR (1) | FR2826301B1 (fr) |
WO (1) | WO2003002281A1 (fr) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0681095A1 (fr) * | 1994-05-02 | 1995-11-08 | LEISTRITZ AG & CO. Abgastechnik | Méthode et dispositif pour le montage d'un catalysateur de gaz d'échappement |
EP0768451A1 (fr) * | 1995-10-12 | 1997-04-16 | Toyota Jidosha Kabushiki Kaisha | Catalyseur monolithique et procédé pour sa préparation |
US5729902A (en) * | 1992-12-09 | 1998-03-24 | Emitec Gesellschaft Fuer Emissionstechnologie Mbh | Catalytic converter with two or more honeycomb bodies in a casing tube and method for its production |
EP0953741A1 (fr) * | 1998-04-29 | 1999-11-03 | Automobiles Peugeot | Pot catalytique et de traitement acoustique d'une ligne d'échappement à double flux |
EP1025923A1 (fr) * | 1998-09-24 | 2000-08-09 | Sango Co., Ltd. | Procede de production d'un conteneur a structure double |
-
2001
- 2001-06-20 FR FR0108133A patent/FR2826301B1/fr not_active Expired - Fee Related
-
2002
- 2002-06-18 EP EP02748958A patent/EP1397219A1/fr not_active Withdrawn
- 2002-06-18 WO PCT/FR2002/002103 patent/WO2003002281A1/fr not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5729902A (en) * | 1992-12-09 | 1998-03-24 | Emitec Gesellschaft Fuer Emissionstechnologie Mbh | Catalytic converter with two or more honeycomb bodies in a casing tube and method for its production |
EP0681095A1 (fr) * | 1994-05-02 | 1995-11-08 | LEISTRITZ AG & CO. Abgastechnik | Méthode et dispositif pour le montage d'un catalysateur de gaz d'échappement |
EP0768451A1 (fr) * | 1995-10-12 | 1997-04-16 | Toyota Jidosha Kabushiki Kaisha | Catalyseur monolithique et procédé pour sa préparation |
EP0953741A1 (fr) * | 1998-04-29 | 1999-11-03 | Automobiles Peugeot | Pot catalytique et de traitement acoustique d'une ligne d'échappement à double flux |
EP1025923A1 (fr) * | 1998-09-24 | 2000-08-09 | Sango Co., Ltd. | Procede de production d'un conteneur a structure double |
Also Published As
Publication number | Publication date |
---|---|
EP1397219A1 (fr) | 2004-03-17 |
FR2826301A1 (fr) | 2002-12-27 |
FR2826301B1 (fr) | 2003-10-24 |
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