EP1451455A1 - Abgasanlage und herstellungsverfahren dafür - Google Patents
Abgasanlage und herstellungsverfahren dafürInfo
- Publication number
- EP1451455A1 EP1451455A1 EP02785228A EP02785228A EP1451455A1 EP 1451455 A1 EP1451455 A1 EP 1451455A1 EP 02785228 A EP02785228 A EP 02785228A EP 02785228 A EP02785228 A EP 02785228A EP 1451455 A1 EP1451455 A1 EP 1451455A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- exhaust system
- outer casing
- chambers
- passages
- anyone
- 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.)
- Granted
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
- F01N13/16—Selection of particular materials
-
- 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
-
- 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
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
-
- 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
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
- F01N1/084—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling the gases flowing through the silencer two or more times longitudinally in opposite directions, e.g. using parallel or concentric tubes
-
- 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
- F01N13/1861—Construction facilitating manufacture, assembly, or disassembly the assembly using parts formed by casting or moulding
-
- 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
- F01N2530/00—Selection of materials for tubes, chambers or housings
- F01N2530/06—Aluminium or alloys thereof
Definitions
- the present invention relates to an exhaust system to be used in combination with a combustion engine comprising an exhaust pipe and a silencer.
- the known exhaust system consists of one or more large pots or chambers acting as silencers, which are interconnected by pipes. They are normally placed underneath the automotive, where they take up a considerable amount of space. In modern design, where the use of space is optimised in order to maximise the exploitation of the available space, a less space consuming solution is heavily sought. Also, the size and shape of the known exhaust systems have a negative influence on the aerodynamic properties of the automotive. This is another important aspect, since the aerodynamic properties must be optimised in order to minimise fuel consumption, and thereby also pollution.
- a further negative aspect of the known exhaust systems is, that the weight is generally high due to the use of steel in the design.
- Steel has very poor resistance against corrosion at high temperatures, which leads to increased wall thickness of the pots and pipes, in order to prolong the life span (until corrosion has penetrated the wall thickness).
- the increased wall thickness leads to increased weight, which also leads to increased fuel consumption.
- an aluminium coating is often applied to steel exhaust systems, which do at least partly work, but makes it difficult to recycle the used exhaust systems, because of the mixing of the basic materials.
- exhaust systems made from stainless steel have been proposed, but these are expensive due to the high price of the material, and difficult to produce as stainless steel is harder to machine and to braze than standard steel.
- One objective of the present invention is to provide an exhaust system with improved aerodynamic properties. Another objective is to provide an exhaust system, which is less space consuming. A further objective is to provide an exhaust system with reduced weight. A further objective is to provide an exhaust system with improved life span.
- the exhaust system consists of an outer casing of a mainly uniform cross-section and an internal system comprising a number of chambers and passages, acting as noise reduction for the combustion engine.
- An exhaust system with outer casing of mainly uniform cross-section does not have the shifts in dimensions and numerous sharp edges as the known types of systems, whereby the aerodynamical properties are greatly enhanced.
- the outer casing of mainly uniform cross-section and the internal system comprising a number of chambers and passages allow a design of the exhaust system, which consumes less space and with reduced weight.
- the exhaust system may be made from a light metal such as aluminium, whereby the life span may be increased to any chosen time, and at the same time reducing the overall weight.
- the invention further relates to a method for producing an exhaust system as described above.
- the method of producing the exhaust system comprises extruding at least an outer casing, and providing a system of internal walls so as to form chambers and passages acting as noise reduction for the combustion engine.
- the exhaust system may be produced at a low cost, since an even complex design of the cross-section of the casing is possible with insignificant effect on the cost. This is to some degree due to the use of the extrusion process to produce it.
- the method may comprise extrusion of at least part of the chambers, whereby this may be made with the same advantages as the outer casing.
- the method may comprise plastic deformation to form at least part of the chambers, in order to provide these with suitable designs for optimising the reduction of the noise emitted.
- the method may comprise forming of passages, whereby accurate and/or small as well as large passages may be formed of any shape or form.
- the method may comprise insertion of blockings in order to provide more freedom of design.
- the method may comprise forming an inlet and/or an outlet, whereby these may be integrated in the design. Alternatively, these may be attached subsequently, e.g. by welding.
- Fig. 1 shows an embodiment of a cross-section of a profile for an exhaust system
- Fig. 2 shows another embodiment of a cross-section of a profile for an exhaust system
- Fig. 3 shows a further embodiment of a cross-section of a profile for an exhaust system
- Fig. 4 shows another embodiment of a cross-section of a profile for an exhaust system
- Fig. 5 shows section A-A of the profile according to Fig.4
- Fig. 6 shows an end view of an exhaust system
- Fig. 7 shows section B-B according to Fig.6
- Fig. 8 shows section B-B according to Fig.6, with arrows indicating the flow of gas through the exhaust system
- Fig. 9 shows a cross-section of another profile for an exhaust system
- Fig. 10 shows a schematic view of an exhaust system using the profile according to
- Fig. 11 shows a finished exhaust system as it can be fitted to a car.
- Fig. 1 displays an outer casing 2 comprising a first profile with another profile placed inside, which other profile comprises a number of walls 3.
- the outer casing 2 is shaped to have good aerodynamic properties.
- the walls 3 of the inner profile are suitable for constituting internal divisions inside an exhaust system after further processing.
- Fig. 2, 3 and 4 display different designs of an outer casing 2, which is extruded as one piece including internal walls 3.
- Fig. 5 displays section A-A of Fig.4 with an outer casing 2 and internal walls 3.
- Fig. 6 displays an exhaust system comprising the profile of Fig. 4 and 5.
- the exhaust system comprises an outer casing 2 with internal walls 3.
- the wall 3' is plastically deformed and passages 6 have been machined, e.g. punched, drilled etc.
- the casing 2' and internal wall 3" are plastically deformed to form an inlet 14.
- passages 6 have been formed as well as chambers 4, which are more clear in Fig.7.
- Fig. 7 essentially displays section B-B of Fig. 6.
- blockings or baffles 12 have been added to close the ends and to further separate the chambers 4.
- the outer casing 2 and the walls 3 have been deformed at the ends to form an inlet 14 and an outlet 16.
- Further chambers 4 have been formed, e.g. by using mandrels.
- passages 6 have been formed to allow flow of gas between the chambers 4.
- the passages 6 may be of any size, shape and form.
- the sizes, shapes and forms of the chambers 4 as well as the passages 6 are design parameters, which are calculated using known technical formulas corresponding to the flow of gas, speed, desired noise reduction etc., which is knowledge of the skilled person.
- Fig. 8 is in essence identical to Fig. 7. Only arrows indicating the flow of gas through the inlet 14 via a chamber 4 through passages 6 into the next chamber 4 etc. have been added.
- the design of the exhaust system can assume a variety of shapes, sizes and forms depending on the kind of automotive, its use, the kind of engine etc.
- the inlets 14 and outlet 16 may be equipped with pipes for easy connection to other components. Especially the outlet 16 may be equipped with a piece of pipe designed to accommodate a specific sound of the engine.
- the inlet 14 may be connected directly to a combustion chamber, to a manifold or e.g. to a catalytic unit and/or a small particle filter.
- Fig. 9 shows another tube 20 to be used as basic profile for an exhaust system according to the invention.
- the exact cross-section of this profile is not critical, as long as it is adapted to be mounted to the underside of a car.
- it has a flat part 21 and curved parts 22, 23.
- a semicircular part 24 has been provided, extending over substantially more than 180° C, so that a tube with circular cross-section and suitable diameter can be fixed into this part 24.
- baffles 25 having a cross- section corresponding to the cross-section of the tube 20 of fig. 9, except for the circular part 24 which is left open, are inserted through one end and positioned at defined distances from that end. This can be done in a way corresponding to the way in which baffles are positioned in manifolds such as disclosed e.g. in EP-A-0 891 528 or EP-A-0 214 670. In this way the tube 20 is divided into a number of spaces divided by the baffles and interconnected through the semicircular parts 24. These volumes of these spaces can be adapted to the requirements of the exhaust system to act as a silencer.
- An improvement can be made by inserting circular tube ends 26 into the semicircular parts 24 and position these tube ends 26 in such a way that either one end is in the same plane as a baffle or each of the tube ends extend into one of two neighbouring spaces divided by a baffle 25. In this way the silencing can be optimized.
- Baffles 25 and tube ends 26 can be fixed inside the tube 20 by welding process commonly used in the art.
- Fig. 11 there is shown the final shape of an exhaust system as can be made according to the invention, and which can be applied directly to the bottom part of a car. Because of the larger cross-section of the tube the exhaust line has sufficient strength and at the same time sufficient volume for noise reduction. In view of this latter requirement bending of the extruded profile is important to have sufficient length and thereby sufficient volume for noise reduction and to fit to the bottom of a car. This bending may also be important in view of other structural elements fitted to the bottom of the car, such as driving axle etc.
- the silencer may be made using steel/steel alloys, but is preferably made using light metal alloys, such as titanium, aluminium, magnesium. It may also comprise components made from ceramic materials. Plastics, with or without reinforcements may also be used in part or as a whole. Optionally with an internal shield for improved heat resistance.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
- External Artificial Organs (AREA)
- Molding Of Porous Articles (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Glass Compositions (AREA)
- Treating Waste Gases (AREA)
- Forging (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO20015674 | 2001-11-20 | ||
NO20015674A NO20015674D0 (no) | 2001-11-20 | 2001-11-20 | Lyddemper og fremgangsmåte for tildannelse av samme |
NO20020620A NO20020620D0 (no) | 2002-02-08 | 2002-02-08 | Lyddemper og fremgangsmåte for tildannelse av samme |
NO20020620 | 2002-02-08 | ||
PCT/EP2002/011610 WO2003044345A1 (de) | 2001-11-20 | 2002-10-14 | Exhaust system and method of producing the same |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1451455A1 true EP1451455A1 (de) | 2004-09-01 |
EP1451455B1 EP1451455B1 (de) | 2006-02-15 |
Family
ID=26649333
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02785228A Expired - Lifetime EP1451455B1 (de) | 2001-11-20 | 2002-10-14 | Abgasanlage und herstellungsverfahren dafür |
Country Status (12)
Country | Link |
---|---|
US (1) | US20050067217A1 (de) |
EP (1) | EP1451455B1 (de) |
JP (1) | JP2005509792A (de) |
KR (1) | KR20050036900A (de) |
CN (1) | CN1589366A (de) |
AT (1) | ATE317943T1 (de) |
AU (1) | AU2002350556A1 (de) |
BR (1) | BR0214300A (de) |
DE (1) | DE60209253T2 (de) |
EA (1) | EA005845B1 (de) |
ES (1) | ES2258658T3 (de) |
WO (1) | WO2003044345A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7510050B2 (en) * | 2004-01-27 | 2009-03-31 | Emler Don R | Vehicle exhaust systems |
JP2008095548A (ja) * | 2006-10-06 | 2008-04-24 | Yamaha Motor Co Ltd | エンジンの排気装置及び該排気装置を備えた自動二輪車 |
DE102017130865A1 (de) * | 2017-12-21 | 2019-06-27 | Faurecia Emissions Control Technologies, Germany Gmbh | Abgasanlage für einen Verbrennungsmotor eines Kraftfahrzeugs sowie Kraftfahrzeug |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3100140A (en) * | 1960-05-31 | 1963-08-06 | Calumet & Hecla | Catalytic automotive exhaust converter |
IT1095302B (it) * | 1977-04-28 | 1985-08-10 | Leistritz Hans Karl | Impianto di conduzione per apparecchi di gas con scarico nell'atmosfera libera,in particolare per elementi di azionamento a motore |
US4133479A (en) * | 1977-08-22 | 1979-01-09 | Musitano Charles M | Exhaust gas muffler for an internal combustion engine |
CH647302A5 (de) * | 1979-06-06 | 1985-01-15 | Alusuisse | Vorrichtung zum ableiten der abgase von verbrennungskraftmaschinen. |
DE2930046C2 (de) * | 1979-07-24 | 1982-02-04 | Alcan Aluminiumwerke GmbH, 3400 Göttingen | Abgasschalldämpfer für Brennkraftmaschienen |
DE3101252A1 (de) * | 1981-01-16 | 1982-09-02 | Alcan Aluminiumwerke GmbH, 3400 Göttingen | Abgasschalldaempfer fuer brennkraftmaschinen und verfahren zu dessen herstellung |
US5119551A (en) * | 1989-02-06 | 1992-06-09 | Tennessee Gas Pipeline Company | Method of making a catalytic converter with one piece housing |
ES2024184A6 (es) * | 1990-04-19 | 1992-02-16 | Turboceramic S L | Silenciador para tubos de escape en motores de vehiculos, perfeccionado. |
WO1999039087A1 (en) * | 1998-01-30 | 1999-08-05 | Arvin Industries, Inc. | Stamped-formed muffler apparatus and assembly process |
WO1999040297A2 (en) * | 1998-02-09 | 1999-08-12 | Klil Industries Ltd. | Aluminum muffler and method of manufacture |
US6457553B1 (en) * | 2000-08-04 | 2002-10-01 | Nelson Industries, Inc. | Low cost muffler |
DE10060522B4 (de) * | 2000-12-06 | 2004-07-22 | J. Eberspächer GmbH & Co. KG | Abgas-Schalldämpfer für ein brennstoffbetriebenes Heizgerät |
US6571910B2 (en) * | 2000-12-20 | 2003-06-03 | Quiet Storm, Llc | Method and apparatus for improved noise attenuation in a dissipative internal combustion engine exhaust muffler |
-
2002
- 2002-10-14 AT AT02785228T patent/ATE317943T1/de not_active IP Right Cessation
- 2002-10-14 DE DE60209253T patent/DE60209253T2/de not_active Expired - Fee Related
- 2002-10-14 CN CNA028231023A patent/CN1589366A/zh active Pending
- 2002-10-14 KR KR1020047007497A patent/KR20050036900A/ko not_active Application Discontinuation
- 2002-10-14 JP JP2003545946A patent/JP2005509792A/ja active Pending
- 2002-10-14 EP EP02785228A patent/EP1451455B1/de not_active Expired - Lifetime
- 2002-10-14 EA EA200400694A patent/EA005845B1/ru not_active IP Right Cessation
- 2002-10-14 US US10/496,036 patent/US20050067217A1/en not_active Abandoned
- 2002-10-14 ES ES02785228T patent/ES2258658T3/es not_active Expired - Lifetime
- 2002-10-14 AU AU2002350556A patent/AU2002350556A1/en not_active Abandoned
- 2002-10-14 WO PCT/EP2002/011610 patent/WO2003044345A1/de active IP Right Grant
- 2002-10-14 BR BR0214300-3A patent/BR0214300A/pt not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO03044345A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP1451455B1 (de) | 2006-02-15 |
ATE317943T1 (de) | 2006-03-15 |
ES2258658T3 (es) | 2006-09-01 |
AU2002350556A1 (en) | 2003-06-10 |
BR0214300A (pt) | 2004-10-26 |
US20050067217A1 (en) | 2005-03-31 |
KR20050036900A (ko) | 2005-04-20 |
DE60209253D1 (de) | 2006-04-20 |
DE60209253T2 (de) | 2006-11-09 |
WO2003044345A1 (de) | 2003-05-30 |
EA005845B1 (ru) | 2005-06-30 |
CN1589366A (zh) | 2005-03-02 |
EA200400694A1 (ru) | 2004-12-30 |
JP2005509792A (ja) | 2005-04-14 |
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