WO2000012878A1 - Verfahren zur herstellung eines katalysatorgehäuses mittels wickel-spanntechnik - Google Patents
Verfahren zur herstellung eines katalysatorgehäuses mittels wickel-spanntechnik Download PDFInfo
- Publication number
- WO2000012878A1 WO2000012878A1 PCT/EP1999/005320 EP9905320W WO0012878A1 WO 2000012878 A1 WO2000012878 A1 WO 2000012878A1 EP 9905320 W EP9905320 W EP 9905320W WO 0012878 A1 WO0012878 A1 WO 0012878A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- housing
- jacket
- shell
- mat
- housing jacket
- 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.)
- Ceased
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
- F01N3/2839—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
Definitions
- the invention relates to a method for producing a catalyst housing according to the preamble of claim 1 or 3.
- Catalyst housings such as those used to connect a catalytic converter in exhaust systems of internal combustion engines, in particular motor vehicles, are available in a wide variety of embodiments, two systems having established themselves on the market.
- a monolith in particular ceramic design
- a catalytically active material is wrapped with an inflatable mat, which has the task of storing the monolith.
- This inflatable mat is inserted together with the monolith in a sheet metal jacket, which is also produced by means of a winding process and has the task of holding the monolith together with the inflatable mat.
- the pre-stressed sheet metal jacket is then tacked at individual points using spot welding.
- inlet and outlet funnels On the front side there are inlet and outlet funnels, which are aligned according to the requirements (connection of the exhaust pipe). It is attached to the wound converter by means of a welded seam. After the sheet metal jacket has been closed by means of a weld seam, the finished winding converter is obtained.
- the production of a catalyst housing by means of such a winding and tensioning technique has proven itself in principle, but is still in need of improvement with regard to a secure fixing of the monolith by means of the expansion mat within the housing shell.
- the second system that is established on the market is known as a shell converter, which consists of the monolith, a separate inflatable mat and two half-shells, namely an upper and a lower shell.
- the shell converter often has a lack of process reliability.
- the geometry defined by the shell shape often causes difficulties when adapting to the underbody of the motor vehicles.
- the invention has for its object to provide a method for the production of catalyst housings by means of the winding / tensioning technology with which the catalyst core, in particular a monolith, is fixed in a particularly safe and permanent manner within the housing shell and thus the durability of the catalyst for its running time can be ensured.
- the method according to the invention is characterized in that during the pretensioning the housing casing is knocked at a predetermined frequency, causing the expansion mat to be set.
- This knocking which according to an advantageous embodiment is carried out at a knocking frequency of 20 to 80 Hz, in particular 40 to 50 Hz, for example for 5 seconds, causes the expansion mat to be set in a much more effective manner when the housing casing is tensioned by means of the tensioning straps, thereby absolutely tight fit of the monolith within the housing shell is ensured over the entire life of the catalyst.
- the inflatable mat is inserted into the housing jacket in such a way that the inflatable jacket overlap is offset by 180 ° to overlap the housing jacket. This reliably prevents the two overlaps from coming to lie on top of one another, as a result of which the tightening of the inflatable mat or the casing shell could be impaired.
- a particularly advantageous embodiment is characterized in that the tensioning force for pretensioning the housing shell is increased to 10 to 30 kN, in particular 20 kN, towards the end of the tapping process. Such a force-controlled tensioning of the housing shell with simultaneous knocking results in a particularly effective manner in a setting and a firm covering of the inflatable mat.
- the housing jacket is tack-welded after the pretensioning. Funnels are welded to the front of the stapled casing by means of a circular seam, the overlap of the casing being welded in completely with a longitudinal seam only after the funnels have been welded on. In this way, the catalytic converter housing can be manufactured in a very fast, dimensionally accurate and cost-effective manner.
- FIG. 1 shows a schematic end view of a housing jacket after the winding process
- FIG. 2 shows a schematic end view of a monolith wrapped in an inflatable mat
- FIG. 3 shows an assembly drawing of the objects from FIG. 1 and FIG. 2,
- FIG. 4 shows a schematic illustration of the tensioning process in which the housing jacket is pretensioned
- FIG. 5 shows a schematic illustration of an alternative tensioning method for the housing jacket
- Figure 6 is a schematic side view of a spot welded housing shell after the clamping process
- FIG 7 is a schematic side view of the finished catalyst housing after attaching the front funnel. From Figure 1, a housing jacket 1 made of sheet metal can be seen, which has been wound from a circuit board in such a cylinder-like manner that the ends overlap.
- a monolith 2 in the form of a cylindrical ceramic carrier is wrapped with an inflatable mat 3.
- the ends of the wrapped mat 3 also overlap each other.
- the monolith 2 wrapped with the inflatable mat 3 is then inserted into the wound housing shell 1, as can be seen from FIG. 3. This insertion takes place in such a way that the position of the inflatable mat overlap is offset by 180 ° to the overlap of the housing shell 1.
- the housing jacket 1 and thus also the inner inflatable mat 3 is now prestressed by means of tensioning straps 4, the setting of the inflatable mat 3 being ensured by tapping at a frequency of 45 Hz, for example, for 5 seconds.
- the force at the end of the tapping process can be increased to a height of, for example, 20 kN in order to ensure that the monolith 2 is firmly seated.
- the overlaps of the housing shell 1 and the inflatable mat 3 are each offset by 90 ° to the clamping means plane, which is the horizontal plane in Figure 4, which runs through the center of the monolith 2 and through the intersection of the strap 4.
- the housing jacket 1 within the tensioning straps 4 in such a way that the overlaps of the housing jacket 1 and the inflatable mat 3 lie in this horizontal plane of the tensioning means, as can be seen from FIG.
- the catalyst housing prepared in this way is then placed in a welding device and provided with funnels 6 on the end face, as can be seen from FIG.
- the funnels 6 are welded to the housing jacket 1 by means of circular seams 7, which is done for example by means of MAG welding can.
- the tacked overlap of the casing shell 1 is completely welded by means of a longitudinal seam 8, so that the catalytic converter is finished.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
- Catalysts (AREA)
Abstract
Description
Claims
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP99941461A EP1108123B1 (de) | 1998-08-26 | 1999-07-26 | Verfahren zur herstellung eines katalysatorgehäuses mittels wickel-spanntechnik |
| DE59903055T DE59903055D1 (de) | 1998-08-26 | 1999-07-26 | Verfahren zur herstellung eines katalysatorgehäuses mittels wickel-spanntechnik |
| JP2000567834A JP4430825B2 (ja) | 1998-08-26 | 1999-07-26 | 巻回緊締技術を用いた触媒ハウジングを製造するための方法 |
| PL345489A PL196779B1 (pl) | 1998-08-26 | 1999-07-26 | Sposób wytwarzania obudowy katalizatora silników spalinowych |
| BR9913229-0A BR9913229A (pt) | 1998-08-26 | 1999-07-26 | Processo para a fabricação de uma caixa de catalisador por meio da técnica de enrolar/tender |
| US09/805,719 US6902710B2 (en) | 1998-08-26 | 2001-02-27 | Method for the production of a catalytic converter housing using a winding-tensioning technique |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19838750.4 | 1998-08-26 | ||
| DE19838750A DE19838750A1 (de) | 1998-08-26 | 1998-08-26 | Verfahren zur Herstellung eines Katalysatorgehäuse mittels Wickel-/Spanntechnik |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US09/805,719 Continuation US6902710B2 (en) | 1998-08-26 | 2001-02-27 | Method for the production of a catalytic converter housing using a winding-tensioning technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2000012878A1 true WO2000012878A1 (de) | 2000-03-09 |
Family
ID=7878752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP1999/005320 Ceased WO2000012878A1 (de) | 1998-08-26 | 1999-07-26 | Verfahren zur herstellung eines katalysatorgehäuses mittels wickel-spanntechnik |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US6902710B2 (de) |
| EP (1) | EP1108123B1 (de) |
| JP (1) | JP4430825B2 (de) |
| CN (1) | CN1127613C (de) |
| BR (1) | BR9913229A (de) |
| DE (2) | DE19838750A1 (de) |
| ES (1) | ES2184497T3 (de) |
| PL (1) | PL196779B1 (de) |
| WO (1) | WO2000012878A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002147230A (ja) * | 2000-11-10 | 2002-05-22 | Ibiden Co Ltd | 触媒コンバータ及びその製造方法 |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10018805A1 (de) | 2000-04-15 | 2001-11-29 | Volkswagen Ag | Verfahren und Vorrichtung zur Herstellung eines Katalysators mit einem einen polygonen Querschnitt aufweisenden Monolithen |
| DE10131466B4 (de) * | 2001-06-29 | 2006-09-21 | Thyssenkrupp Steel Ag | Mantelförmiges Mittelteil eines Katalysatorgehäuses |
| DE10247582A1 (de) | 2002-10-11 | 2004-04-29 | Volkswagen Ag | Verfahren zur Herstellung eines Katalysatorgehäuses |
| DE102005010267A1 (de) * | 2005-03-07 | 2006-09-14 | Arvinmeritor Emissions Technologies Gmbh | Verfahren zum Herstellen einer abgasführenden Vorrichtung, insbesondere einer Fahrzeugabgasreinigungsvorrichtung |
| DE102005023169B4 (de) * | 2005-05-19 | 2007-05-16 | Benteler Automobiltechnik Gmbh | Abgasreinigungsvorrichtung |
| DE102009030632C5 (de) * | 2009-06-25 | 2014-12-31 | Benteler Automobiltechnik Gmbh | Verfahren und Vorrichtung zur Herstellung eines Katalysators |
| DE102011016170A1 (de) | 2011-04-05 | 2012-10-11 | Faurecia Emissions Control Technologies, Germany Gmbh | Abgas führende Vorrichtung und Verfahren zu ihrer Herstellung |
| US9790836B2 (en) | 2012-11-20 | 2017-10-17 | Tenneco Automotive Operating Company, Inc. | Loose-fill insulation exhaust gas treatment device and methods of manufacturing |
| JP6043183B2 (ja) * | 2012-12-27 | 2016-12-14 | 日本碍子株式会社 | 熱交換部材 |
| US12297761B2 (en) | 2023-04-05 | 2025-05-13 | Tenneco Automotive Operating Company Inc. | Exhaust system component with multi-layer support mat |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0398130A2 (de) * | 1989-05-18 | 1990-11-22 | Nippon Pillar Packing Co. Ltd. | Wärmebeständiges Ausdehnungselement |
| WO1991019081A1 (en) * | 1990-05-26 | 1991-12-12 | Fibre Techniques Limited | Catalytic converters |
| EP0818615A2 (de) * | 1996-07-10 | 1998-01-14 | Volkswagen Aktiengesellschaft | Katalysatorgehäuse |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5882608A (en) * | 1996-06-18 | 1999-03-16 | Minnesota Mining And Manufacturing Company | Hybrid mounting system for pollution control devices |
| EP0837229B1 (de) * | 1996-10-15 | 2002-04-24 | Corning Incorporated | Verfahren zur Herstellung eines Katalysators einer Brennkraftmaschine |
| US6405437B1 (en) * | 1997-09-17 | 2002-06-18 | Arvinmeritor, Inc. | Apparatus and method for encasing an object in a case |
-
1998
- 1998-08-26 DE DE19838750A patent/DE19838750A1/de not_active Withdrawn
-
1999
- 1999-07-26 DE DE59903055T patent/DE59903055D1/de not_active Expired - Lifetime
- 1999-07-26 ES ES99941461T patent/ES2184497T3/es not_active Expired - Lifetime
- 1999-07-26 EP EP99941461A patent/EP1108123B1/de not_active Expired - Lifetime
- 1999-07-26 PL PL345489A patent/PL196779B1/pl unknown
- 1999-07-26 JP JP2000567834A patent/JP4430825B2/ja not_active Expired - Fee Related
- 1999-07-26 BR BR9913229-0A patent/BR9913229A/pt not_active IP Right Cessation
- 1999-07-26 CN CN99809973A patent/CN1127613C/zh not_active Expired - Fee Related
- 1999-07-26 WO PCT/EP1999/005320 patent/WO2000012878A1/de not_active Ceased
-
2001
- 2001-02-27 US US09/805,719 patent/US6902710B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0398130A2 (de) * | 1989-05-18 | 1990-11-22 | Nippon Pillar Packing Co. Ltd. | Wärmebeständiges Ausdehnungselement |
| WO1991019081A1 (en) * | 1990-05-26 | 1991-12-12 | Fibre Techniques Limited | Catalytic converters |
| EP0818615A2 (de) * | 1996-07-10 | 1998-01-14 | Volkswagen Aktiengesellschaft | Katalysatorgehäuse |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002147230A (ja) * | 2000-11-10 | 2002-05-22 | Ibiden Co Ltd | 触媒コンバータ及びその製造方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19838750A1 (de) | 2000-03-02 |
| BR9913229A (pt) | 2001-07-17 |
| DE59903055D1 (de) | 2002-11-14 |
| CN1127613C (zh) | 2003-11-12 |
| PL345489A1 (en) | 2001-12-17 |
| JP2002523236A (ja) | 2002-07-30 |
| EP1108123B1 (de) | 2002-10-09 |
| US20010055551A1 (en) | 2001-12-27 |
| EP1108123A1 (de) | 2001-06-20 |
| JP4430825B2 (ja) | 2010-03-10 |
| CN1313930A (zh) | 2001-09-19 |
| PL196779B1 (pl) | 2008-01-31 |
| ES2184497T3 (es) | 2003-04-01 |
| US6902710B2 (en) | 2005-06-07 |
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