WO2000068550A1 - Wabenkörperanordnung mit verschiedenen abschnitten in einem mantelrohr - Google Patents
Wabenkörperanordnung mit verschiedenen abschnitten in einem mantelrohr Download PDFInfo
- Publication number
- WO2000068550A1 WO2000068550A1 PCT/EP2000/004093 EP0004093W WO0068550A1 WO 2000068550 A1 WO2000068550 A1 WO 2000068550A1 EP 0004093 W EP0004093 W EP 0004093W WO 0068550 A1 WO0068550 A1 WO 0068550A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- honeycomb body
- section
- flow direction
- arrangement according
- casing tube
- Prior art date
Links
- 239000002184 metal Substances 0.000 claims abstract description 34
- 239000011888 foil Substances 0.000 claims abstract description 28
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 13
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 13
- 230000003197 catalytic effect Effects 0.000 claims abstract description 8
- 238000002485 combustion reaction Methods 0.000 claims abstract description 4
- 238000004140 cleaning Methods 0.000 claims description 9
- 238000013021 overheating Methods 0.000 abstract description 8
- 238000006555 catalytic reaction Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 23
- 239000003054 catalyst Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 239000011149 active material Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000000746 purification Methods 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005476 soldering Methods 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- F01N3/18—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 ; Methods of operation or control of catalytic converters
- F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
- F01N3/2046—Periodically cooling catalytic reactors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/88—Handling or mounting catalysts
- B01D53/885—Devices in general for catalytic purification of waste gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/944—Simultaneously removing carbon monoxide, hydrocarbons or carbon making use of oxidation catalysts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
- B01J35/56—Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional monoliths
-
- 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
- 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
- F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
- F01N3/2807—Metal other than sintered metal
-
- 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
- F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
- F01N3/2807—Metal other than sintered metal
- F01N3/281—Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates
-
- 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
- F01N3/2889—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices with heat exchangers 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
- 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
- F01N2240/02—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 heat exchanger
-
- 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
- F01N2330/00—Structure of catalyst support or particle filter
- F01N2330/30—Honeycomb supports characterised by their structural details
- F01N2330/44—Honeycomb supports characterised by their structural details made of stacks of sheets, plates or foils that are folded in S-form
-
- 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
- F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
- F01N2570/12—Hydrocarbons
-
- 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
-
- 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 present invention relates to a honeycomb body arrangement with different sections in a jacket tube, which can be used for the catalytic purification of exhaust gas, in particular for vehicles with internal combustion engines with a high emission rate of hydrocarbons.
- catalytic converter designs have been developed in recent years.
- One type of catalytic converter has at least partially metal foils coated with catalytically active material, which are arranged in a jacket tube.
- Numerous designs with different structures of the metal foils are known for such catalysts.
- a catalyst known from DE 195 35 289 A1 for cleaning the exhaust gas of internal combustion engines with large proportions of hydrocarbons This catalyst consists of a jacket tube and at most two layers of structured metal foil with a catalytically active coating, which are attached to the inner surface of the jacket tube.
- This arrangement is suitable for complying with certain minimum requirements for exhaust gas purification, in particular of older 2-stroke engines with hydrocarbon concentrations in the exhaust gas of up to 4 percent by volume.
- the disadvantage of such catalysts is that only partial exhaust gas purification can be achieved.
- the object of the present invention is to provide a honeycomb structure as a basis for a catalyst for cleaning exhaust gases with high hydrocarbon concentrations with an improved cleaning effect while avoiding overheating, in particular for two-wheeled motor vehicles.
- a catalyst according to claim 1 serves to achieve this object.
- Advantageous refinements are specified in the dependent claims.
- honeycomb body arrangement Another advantage of the honeycomb body arrangement according to the invention is that a back pressure which arises in the exhaust duct through a honeycomb body arrangement can be reduced compared to a honeycomb body arrangement in which the first section of the casing tube is completely filled by a honeycomb body.
- the metal tube consists of only two axial sections, of which the rear one is filled in the flow direction by a honeycomb body which has many flow channels to enlarge the catalytically active surface.
- These flow channels are preferably formed from many layers of structured metal foils.
- the jacket tube is taken up approximately halfway by the front or rear section in the flow direction of the exhaust gases. In this way it is achieved that a higher conversion rate of hydrocarbons can be achieved than with another arrangement.
- the front and the rear section in the flow direction can lie directly against one another, which simplifies production. However, a distance of up to approximately 10 mm can also be maintained. This has the advantage that there is an increased turbulence and thus a better mixing of the exhaust gases in the resulting space.
- the metal foil used can be structured at least in partial areas, in particular in wave form. These structures can also be more complex, e.g. B. shafts with cross ribs, slots, micro structures or other geometries.
- the metal foils which are attached in the front section in the flow direction in the casing tube, can be attached to one another and / or to the casing pipe by soldering. It is sufficient to solder the metal foil in its axial end areas. Fastening by welding is also possible, e.g. B. in the form of dot welds.
- the metal foil In order to improve the conversion of the exhaust gas by transverse flows and swirls in the front section in the direction of flow through the casing tube, it is advantageous to provide the metal foil with perforation holes, which can have a diameter of 2-6 mm, for example.
- honeycomb bodies For the manufacturing process, in particular the soldering of honeycomb bodies, it is advantageous if the honeycomb body is fixed in the jacket tube by elastic forces and the individual sheet metal layers can no longer shift among one another. It is therefore an advantage if the honeycomb body is formed from several layers of intertwined sheets.
- the sheets can be structured differently.
- the honeycomb body can be made up of alternately smooth and corrugated sheets that are intertwined. Other geometries are also possible.
- the honeycomb body is fastened in the jacket tube in particular by soldering the ends of the sheets to the inner surface of the jacket tube.
- honeycomb body intended for the rear section in the direction of flow turns out to be effective in its action if it has flow channels of such a cross-sectional area that 100 cpsi to 400 cpsi, in particular approximately 200 cpsi (cells per square inch) result.
- the structured metal foil attached in the first section of the casing tube has flow channels of such a cross-sectional area, so that 20 cpsi to 50 cpsi, preferably approximately 25 cpsi, result.
- the usual high-temperature corrosion-resistant materials come into consideration as the material for the structured metal foil attached in the section of the casing tube in the flow direction of the exhaust gas.
- a modified corrosion-resistant material is preferably used for the honeycomb body in the rear section of the casing tube, in particular with a composition similar to that of material 1.4757.
- austenitic stainless steels are very often used in the casing tube for metallic honeycomb bodies, it is advantageous for the present invention to use ferritic corrosion-resistant stainless steel, in particular with the material numbers 1.4509 or 1.4512.
- FIG. 1 shows an axial longitudinal section through a honeycomb body arrangement according to the invention
- FIG. 2 front view of a honeycomb body assembly according to the invention
- FIG. 1 shows a longitudinal section through a honeycomb body arrangement which consists of two sections 4, 5, which are surrounded by a casing tube 1.
- a metal foil 2 coated with catalytically active material is attached to the inner surface 9 of the casing tube 1.
- perforation holes 8 can be in the metal foil 2.
- the metal foil 2 is preferably soldered to the inner surface 9 of the casing tube 1.
- the rear section 5 of the casing tube 1 in the flow direction S is essentially completely filled by a honeycomb body 6, which can be constructed from different structured metal foils 3.
- the front section 4 of the catalytic converter shown preferably contains only one corrugated layer of the catalytically active metal foil 2, which on the one hand makes it possible to catalyze a large part of the hydrocarbons contained in the exhaust gas and on the other hand ensures good heat dissipation.
- FIG. 2 shows the top view of the end region of the casing tube 1 of the catalyst according to the invention shown in FIG. 1.
- the corrugated catalytically active metal foil 2 attached to the inside is visible in the front section 4.
- the honeycomb body 6 consisting of different layers of structured metal foils 3, which is composed of S-shaped layers, is shown. In this way, a plurality of flow channels 7 is formed and the axial displacement of the layers relative to each other is made more difficult.
- the present invention is particularly suitable for exhaust gas purification in motorcycles, in particular with a cubic capacity of less than 250 cubic centimeters.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Toxicology (AREA)
- Environmental & Geological Engineering (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU49176/00A AU4917600A (en) | 1999-05-10 | 2000-05-05 | Honeycomb body structure comprising various sections in a casing tube |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19921609.6 | 1999-05-10 | ||
DE19921609A DE19921609A1 (de) | 1999-05-10 | 1999-05-10 | Wabenkörperanordnung mit verschiedenen Abschnitten in einem Mantelrohr |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000068550A1 true WO2000068550A1 (de) | 2000-11-16 |
Family
ID=7907656
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2000/004093 WO2000068550A1 (de) | 1999-05-10 | 2000-05-05 | Wabenkörperanordnung mit verschiedenen abschnitten in einem mantelrohr |
Country Status (5)
Country | Link |
---|---|
AU (1) | AU4917600A (de) |
DE (1) | DE19921609A1 (de) |
MY (1) | MY133156A (de) |
TW (1) | TW521795U (de) |
WO (1) | WO2000068550A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019194881A1 (en) * | 2018-04-05 | 2019-10-10 | Catalytic Combustion Corporation | Metal foil catalyst for the control of emissions from diesel engines |
DE102019212133B4 (de) * | 2019-08-13 | 2021-05-27 | Vitesco Technologies GmbH | Elektrisch beheizbarer Katalysator |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0245737A1 (de) * | 1986-05-12 | 1987-11-19 | INTERATOM Gesellschaft mit beschränkter Haftung | Wabenkörper, insbesondere Katalysator-Trägerkörper, mit gegensinnig verschlungenen Metallblechschichten und Verfahren zu seiner Herstellung |
EP0401195A2 (de) * | 1989-06-01 | 1990-12-05 | Franz Dipl.Ing.Dr. Laimböck | Auspuffanlage, insbesondere für Zweitakt-Brennkraftmaschinen |
EP0431405A1 (de) * | 1989-12-02 | 1991-06-12 | Degussa Ag | Abgasreinigungssystem zur katalytischen Reinigung der Auspuffgase von Zweitaktmotoren |
WO1997007327A1 (de) * | 1995-08-16 | 1997-02-27 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Katalysator zur verringerung von kohlenwasserstoff in abgasen eines kraftfahrzeuges |
US5830022A (en) * | 1996-01-26 | 1998-11-03 | Yamaha Hatsudoki Kabushiki Kaisha | Catalytic exhaust system for watercraft |
-
1999
- 1999-05-10 DE DE19921609A patent/DE19921609A1/de not_active Ceased
-
2000
- 2000-04-27 TW TW090216744U patent/TW521795U/zh not_active IP Right Cessation
- 2000-05-05 WO PCT/EP2000/004093 patent/WO2000068550A1/de active Application Filing
- 2000-05-05 AU AU49176/00A patent/AU4917600A/en not_active Abandoned
- 2000-05-09 MY MYPI20002005A patent/MY133156A/en unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0245737A1 (de) * | 1986-05-12 | 1987-11-19 | INTERATOM Gesellschaft mit beschränkter Haftung | Wabenkörper, insbesondere Katalysator-Trägerkörper, mit gegensinnig verschlungenen Metallblechschichten und Verfahren zu seiner Herstellung |
EP0401195A2 (de) * | 1989-06-01 | 1990-12-05 | Franz Dipl.Ing.Dr. Laimböck | Auspuffanlage, insbesondere für Zweitakt-Brennkraftmaschinen |
EP0431405A1 (de) * | 1989-12-02 | 1991-06-12 | Degussa Ag | Abgasreinigungssystem zur katalytischen Reinigung der Auspuffgase von Zweitaktmotoren |
WO1997007327A1 (de) * | 1995-08-16 | 1997-02-27 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Katalysator zur verringerung von kohlenwasserstoff in abgasen eines kraftfahrzeuges |
US5830022A (en) * | 1996-01-26 | 1998-11-03 | Yamaha Hatsudoki Kabushiki Kaisha | Catalytic exhaust system for watercraft |
Also Published As
Publication number | Publication date |
---|---|
DE19921609A1 (de) | 2000-11-16 |
AU4917600A (en) | 2000-11-21 |
MY133156A (en) | 2007-10-31 |
TW521795U (en) | 2003-02-21 |
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