SE519986C2 - Catalyst for internal combustion engine, has exhaust gas outlet channel formed by plate secured inside catalyst casing - Google Patents
Catalyst for internal combustion engine, has exhaust gas outlet channel formed by plate secured inside catalyst casingInfo
- Publication number
- SE519986C2 SE519986C2 SE0103235A SE0103235A SE519986C2 SE 519986 C2 SE519986 C2 SE 519986C2 SE 0103235 A SE0103235 A SE 0103235A SE 0103235 A SE0103235 A SE 0103235A SE 519986 C2 SE519986 C2 SE 519986C2
- Authority
- SE
- Sweden
- Prior art keywords
- catalyst
- housing
- exhaust gases
- plate
- casing
- Prior art date
Links
- 239000003054 catalyst Substances 0.000 title claims abstract description 37
- 238000002485 combustion reaction Methods 0.000 title description 2
- 239000007789 gas Substances 0.000 claims abstract description 16
- 239000013543 active substance Substances 0.000 claims description 8
- 230000003197 catalytic effect Effects 0.000 claims description 3
- 239000012080 ambient air Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 229910000679 solder Inorganic materials 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000746 purification Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000035939 shock Effects 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
- 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
- F01N13/1872—Construction facilitating manufacture, assembly, or disassembly the assembly using stamp-formed parts or otherwise deformed sheet-metal
- F01N13/1877—Construction facilitating manufacture, assembly, or disassembly the assembly using stamp-formed parts or otherwise deformed sheet-metal the channels or tubes thereof being made integrally with the housing
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
Description
5129 986 innan de lämnar katalysatom. Denna lösning ger också bättre ljuddämpande effekt än om de renade avgaserna lämnat katalysatorn via höljet vid den andra kammaren. 5129 986 before leaving the catalyst. This solution also provides a better sound-absorbing effect than if the purified exhaust gases left the catalyst via the housing at the other chamber.
Röret som leder de renade avgaserna tillbaka till den första kammaren är både krångligt att tillverka med den krökta fonnen samt svår att fästa i katalysatoms hölje på ett tillförlitligt sätt p.g.a. de stora temperaturvariationema som katalysatorn utsätts för från de heta avgaserna från förbränningsmotom. Problemet med denna lösning är således att den år väldigt krånglig att tillverka vilket gör den dyr.The pipe that leads the purified exhaust gases back to the first chamber is both cumbersome to manufacture with the curved form and difficult to attach to the catalyst housing in a reliable way due to the large temperature variations to which the catalyst is exposed from the hot exhaust gases from the internal combustion engine. The problem with this solution is thus that it is very cumbersome to manufacture which makes it expensive.
I denna patentansökan visas en variant på katalysatorutlopp som är enklare och därigenom billigare att tillverka samt har färre och enklare komponenter. Det enklare utförandet inverkar även positivt på katalysatorns vikt. Den nya lösningen innebär också att lagret med de anordningen som inrymmer de aktiva substansema som bidrar till den katalytiska reningen får mer utrymme och exponeras bättre vilket ökar katalysatorns effektivitet.This patent application shows a variant of catalyst outlet which is simpler and thereby cheaper to manufacture and has fewer and simpler components. The simpler design also has a positive effect on the weight of the catalyst. The new solution also means that the layer with the device that contains the active substances that contribute to the catalytic purification has more space and is better exposed, which increases the efficiency of the catalyst.
Detta har åstadkommits genom att det böjda utloppsröret ersatts med en krökt eller bockad plåt som fästs direkt mot insidan av katalysatoms omgivande hölje. Den bockade plåten ger då upphov till en kanal längs insidan av höljet där de renade avgasema leds från den andra kammaren tillbaka till utloppet som är placerat vid den första kammaren. Den bockade plåten fästs genom ett löd, svets eller nitförband mot höljets insida.This has been achieved by replacing the curved outlet pipe with a curved or bent plate which is fastened directly to the inside of the surrounding housing of the catalyst. The bent plate then gives rise to a channel along the inside of the housing where the purified exhaust gases are led from the second chamber back to the outlet which is located at the first chamber. The bent plate is attached by means of a solder, weld or rivet joint to the inside of the housing.
Denna utfonnning av katalysatorutloppet är avsevärt enklare än den tidigare använda konstruktionen vilket underlättar tillverkningen och spar vikt. En utföringsform av den patentsökta lösningen visas i figur 1-2.This design of the catalyst outlet is considerably simpler than the previously used construction, which facilitates production and saves weight. An embodiment of the claimed solution is shown in Figures 1-2.
Figur l. Visar ett snitt genom den nya utformningen av katalysatorn.Figure 1. Shows a section through the new design of the catalyst.
Figur 2. Visar olika vyer av utloppsplåten.Figure 2. Shows different views of the outlet plate.
Den aktuella katalysatorn har ett omgivande hölje 10 med ett inlopp ll där avgaserna från motom leds in i katalysatorn. Den volym som bildas innanför katalysatoms hölje 10 är indelad i två kamrar, en främre kammare 12 och en bakre kammare l3.The catalyst in question has a surrounding housing 10 with an inlet 11 where the exhaust gases from the engine are led into the catalyst. The volume formed inside the housing 10 of the catalyst is divided into two chambers, a front chamber 12 and a rear chamber 13.
Avdelningen mellan kamrarna 12 och 13 utgörs av ett element 14 som även fungerar som bärare av den aktiva substans som ger upphov till den katalytiska reningen av avgasema. Den aktiva substansen är applicerad som en beläggning på ytan av elementet 14 som är försedd med ett antal öppningar 15 där avgaserna tillåts strömma igenom. Den aktiva substansen kan även vara inrymd i en anordning där avgaserna leds via ett rör till den aktiva substansen innan de når katalysatorns främre kammare.The compartment between the chambers 12 and 13 consists of an element 14 which also acts as a carrier of the active substance which gives rise to the catalytic purification of the exhaust gases. The active substance is applied as a coating to the surface of the element 14 which is provided with a number of openings 15 where the exhaust gases are allowed to flow through. The active substance can also be contained in a device where the exhaust gases are led via a pipe to the active substance before they reach the front chamber of the catalyst.
Mot insidan av höljet 10 är en böjd plåt 15 fastsatt så att det bildas en kanal 16.Towards the inside of the housing 10 a curved plate 15 is fixed so that a channel 16 is formed.
Kanalen 16 har sitt inlopp 17 i den främre kammaren 12 och mynnar i ett utlopp 18 i höljet 10 vid den bakre kammaren 13.The channel 16 has its inlet 17 in the front chamber 12 and opens into an outlet 18 in the housing 10 at the rear chamber 13.
Avgasema från motorn leds in i höljet 10 genom inloppet ll till katalysatoms bakre kammare 13. Avgasema passerar sedan elementet 14 med den aktiva substansen och renas under samverkan med den aktiva substansen. De renade avgaserna hamnar sedan i den främre kammaren 12 varifrån de leds ut ur katalysatom via kanalen 16 som passerar tillbaka genom den bakre kammaren 13 och ut i den omgivande luften genom utloppet 18.The exhaust gases from the engine are led into the housing 10 through the inlet 11 to the rear chamber 13 of the catalyst. The exhaust gases then pass the element 14 with the active substance and are purified in cooperation with the active substance. The purified exhaust gases then end up in the front chamber 12 from where they are led out of the catalyst via the duct 16 which passes back through the rear chamber 13 and out into the ambient air through the outlet 18.
Plåten 15 är tillverkad genom djupdragning eller sträckpressning av lämpligt metallmaterial så att plåten får en böjd form. Därigenom bildas kanalen 16 genom att plåten 15 fästs mot höljets 10 insida. Kantema på plåten 15 är formade som en fläns 19 så att anliggningsytan mot höljets 10 insida ökar vilket underlättar infåstningen av plåten mot höljet 10.The plate 15 is made by deep drawing or stretch pressing of suitable metal material so that the plate has a curved shape. Thereby, the channel 16 is formed by fastening the plate 15 to the inside of the housing 10. The edges of the plate 15 are shaped as an end 19 so that the abutment surface against the inside of the housing 10 increases, which facilitates the attachment of the plate to the housing 10.
Katalysatorn är även försedd med distanser 20 för att höljet 10 skall bibehålla fonnen vid stora temperaturvariationer samt då katalysatom utsätts för slag och stötar.The catalyst is also provided with spacers 20 so that the casing 10 maintains the mold at large temperature variations and when the catalyst is subjected to blows and shocks.
Distanserna 20 kan även användas för fastsättning av katalysatom på verktyget.The spacers 20 can also be used to attach the catalyst to the tool.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0103235A SE519986C2 (en) | 2001-09-27 | 2001-09-27 | Catalyst for internal combustion engine, has exhaust gas outlet channel formed by plate secured inside catalyst casing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0103235A SE519986C2 (en) | 2001-09-27 | 2001-09-27 | Catalyst for internal combustion engine, has exhaust gas outlet channel formed by plate secured inside catalyst casing |
Publications (3)
Publication Number | Publication Date |
---|---|
SE0103235D0 SE0103235D0 (en) | 2001-09-27 |
SE0103235L SE0103235L (en) | 2003-03-28 |
SE519986C2 true SE519986C2 (en) | 2003-05-06 |
Family
ID=20285480
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE0103235A SE519986C2 (en) | 2001-09-27 | 2001-09-27 | Catalyst for internal combustion engine, has exhaust gas outlet channel formed by plate secured inside catalyst casing |
Country Status (1)
Country | Link |
---|---|
SE (1) | SE519986C2 (en) |
-
2001
- 2001-09-27 SE SE0103235A patent/SE519986C2/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
SE0103235L (en) | 2003-03-28 |
SE0103235D0 (en) | 2001-09-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |