US20050067217A1 - Exhaust system and a method of producing the same - Google Patents
Exhaust system and a method of producing the same Download PDFInfo
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- US20050067217A1 US20050067217A1 US10/496,036 US49603604A US2005067217A1 US 20050067217 A1 US20050067217 A1 US 20050067217A1 US 49603604 A US49603604 A US 49603604A US 2005067217 A1 US2005067217 A1 US 2005067217A1
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- Prior art keywords
- outer casing
- exhaust system
- chambers
- internal construction
- longitudinal
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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
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- 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 foaming 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 EBB 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. 9
- 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.
- FIGS. 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 FIGS. 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.
Abstract
An exhaust system for use in combination with a combustion engine. The exhaust system includes a silencer having an outer casing that defines an interior and an internal construction within the interior and co-extruded with the outer casing so that the outer casing and the internal construction constitute a one-piece extrusion. The outer casing has a length in a longitudinal direction and a substantially uniform cross-section in a transverse direction. The internal construction has at least one wall that extends the length of the outer casing to define with the outer casing at least two longitudinal chambers within the interior of the outer casing. The wall has a deformed portion and passages through the deformed portion so that the silencer has a path through which gas flows from a first of the two longitudinal chambers and through the passages into the second longitudinal chamber, resulting in noise reduction for the combustion engine.
Description
- The present invention relates to an exhaust system to be used in combination with a combustion engine comprising an exhaust pipe and a silencer.
- Such an exhaust system is generally known.
- Automotives of the types, which are powered by combustion engines, are equipped with an exhaust system in order to lower the noise emitted from the engine. 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. To slow down corrosion, 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. Also, 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.
- According to the invention these objects are obtained in that 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.
- It is hereby obtained, that 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 foaming an inlet and/or an outlet, whereby these may be integrated in the design. Alternatively, these may be attached subsequently, e.g. by welding.
- In the following the invention is described with reference to the drawings, which display examples of embodiments of the invention;
-
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 toFIG. 4 -
FIG. 6 shows an end view of an exhaust system -
FIG. 7 shows section B-B according toFIG. 6 -
FIG. 8 shows section EBB according toFIG. 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 toFIG. 9 -
FIG. 11 shows a finished exhaust system as it can be fitted to a car. -
FIG. 1 displays anouter casing 2 comprising a first profile with another profile placed inside, which other profile comprises a number ofwalls 3. Theouter casing 2 is shaped to have good aerodynamic properties. Thewalls 3 of the inner profile are suitable for constituting internal divisions inside an exhaust system after further processing. -
FIGS. 2, 3 and 4 display different designs of anouter casing 2, which is extruded as one piece includinginternal walls 3. -
FIG. 5 displays section A-A ofFIG. 4 with anouter casing 2 andinternal walls 3. -
FIG. 6 displays an exhaust system comprising the profile ofFIGS. 4 and 5 . The exhaust system comprises anouter casing 2 withinternal walls 3. At one side thewall 3′ is plastically deformed andpassages 6 have been machined, e.g. punched, drilled etc. At the other side, thecasing 2′ andinternal wall 3″ are plastically deformed to form aninlet 14. Alsopassages 6 have been formed as well aschambers 4, which are more clear inFIG. 7 . -
FIG. 7 essentially displays section B-B ofFIG. 6 . However, blockings orbaffles 12 have been added to close the ends and to further separate thechambers 4. Theouter casing 2 and thewalls 3 have been deformed at the ends to form aninlet 14 and anoutlet 16.Further chambers 4 have been formed, e.g. by using mandrels. In suitable places,passages 6 have been formed to allow flow of gas between thechambers 4. Thepassages 6 may be of any size, shape and form. The sizes, shapes and forms of thechambers 4 as well as thepassages 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 toFIG. 7 . Only arrows indicating the flow of gas through theinlet 14 via achamber 4 throughpassages 6 into thenext chamber 4 etc. have been added. - According to the invention, 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.
- If convenient, the
inlets 14 andoutlet 16 may be equipped with pipes for easy connection to other components. Especially theoutlet 16 may be equipped with a piece of pipe designed to accommodate a specific sound of the engine. Theinlet 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 anothertube 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. In view thereof it has aflat part 21 andcurved parts curved parts 22, 23 asemicircular 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 thispart 24. - In order to make an exhaust system as shown in
FIG. 10 , baffles 25 having a cross-section corresponding to the cross-section of thetube 20 ofFIG. 9 , except for thecircular 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 thetube 20 is divided into a number of spaces divided by the baffles and interconnected through thesemicircular 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 abaffle 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. - In
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.
Claims (17)
1. Exhaust system to be used in combination with a combustion engine, the exhaust system comprising a silencer comprising an outer casing defining an interior and an internal construction within the interior and co-extruded with the outer casing so that the outer casing and the internal construction constitute a one-piece extrusion, the outer casing having a length in a longitudinal direction and a substantially uniform cross-section in a transverse direction, the internal construction comprising at least one wall that extends the length of the outer casing to define with the outer casing at least two longitudinal chambers within the interior of the outer casing the at least one wall having a deformed portion and passages through the deformed portion so that the silencer comprises a path through which gas flows from a first of the at least two longitudinal chambers and through the passages into a second of the at least two longitudinal chambers resulting in noise reduction for the combustion engine.
2. Exhaust system according to claim 1 , further comprising at least one baffle separating one of the at least two longitudinal chambers into two longitudinally-aligned chambers.
3. Exhaust system according to claim 1 , wherein the outer casing is a multiport extruded tube-element.
4. Exhaust system according to claim 1 , wherein the deformed portion is transverse to the longitudinal direction and contacts the outer casing.
5. Exhaust system according to claim 1 , wherein the outer casing and the internal construction consist essentially of aluminium or an aluminium alloy.
6. Exhaust system according to claim 1 , wherein the outer casing and the at least one wall have complementary deformed end portions that together define an opening into the silencer.
7. A method of producing an exhaust system, the method comprising:
co-extruding an outer casing and an internal construction within an interior of the outer casing so that the outer casing and the internal construction constitute a one-piece extrusion, the outer casing being extruded to have a length in a longitudinal direction and a substantially uniform cross-section in a transverse direction, the internal construction being extruded to comprise at least one wall that extends the length of the outer casing to define with the outer casing at least two longitudinal chambers within the interior of the outer casing; and then
deforming the at least one wall to define a deformed portion and forming passages through the deformed portion so that the silencer comprises a path through which gas flows from a first of the at least two longitudinal chambers and through the passages into a second of the at least two longitudinal chambers, resulting in noise reduction for the combustion engine.
8. A method according to claim 7 , further comprising the step of installing at least one baffle to separate one of the at least two longitudinal chambers into two longitudinally-aligned chambers.
9. A method according to claim 7 , further comprising the step of shaping the outer casing to fit beneath an undercarriage of an automobile.
10. A method according to claim 7 , wherein the deformed portion is deformed so as to be oriented transverse to the longitudinal direction.
11. A method according to claim 7 , wherein the deformed portion is deformed so as to contact the outer casing.
12. A method according to claim 7 , wherein the outer casing and the internal construction consist essentially of aluminium or an aluminium alloy.
13. A method according to claim 7 , further comprising the step of deforming the outer casing and the at least one wall to have complementary deformed end portions that together define an opening into the silencer.
14. A method according to claim 7 , wherein the deformed portion is deformed so as to separate one of the at least two longitudinal chambers into two longitudinally-aligned chambers.
15. Exhaust system according to claim 1 , wherein the deformed portion separates one of the at least two longitudinal chambers into two longitudinally-aligned chambers.
16. Exhaust system to be used in combination with a combustion engine, the exhaust system comprising a silencer comprising an outer casing defining an interior and an internal construction within the interior and co-extruded with the outer casing so that the outer casing and the internal construction constitute a one-piece extrusion, the outer casing having a length in a longitudinal direction and a substantially uniform cross-section in a transverse direction, the internal construction comprising at least one wall defining a semicircular opening, the silencer further comprising at least one baffle separating the interior into at least two longitudinally-aligned chambers and a tubular member received in the semicircular opening and interconnecting the two longitudinally-aligned chambers so that the silencer comprises a path through which gas flows from a first of the two longitudinally-aligned chambers and through the tubular member into a second of the two longitudinally-aligned chambers, resulting in noise reduction for the combustion engine.
17. Exhaust system according to claim 16 , wherein the outer casing and the internal construction consist essentially of aluminium or an aluminium alloy.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO20015674A NO20015674D0 (en) | 2001-11-20 | 2001-11-20 | Muffler and method of forming the same |
NO20015674 | 2001-11-20 | ||
NO20020620 | 2002-02-08 | ||
NO20020620A NO20020620D0 (en) | 2002-02-08 | 2002-02-08 | Silencer and method of forming the same |
PCT/EP2002/011610 WO2003044345A1 (en) | 2001-11-20 | 2002-10-14 | Exhaust system and a method of producing the same |
Publications (1)
Publication Number | Publication Date |
---|---|
US20050067217A1 true US20050067217A1 (en) | 2005-03-31 |
Family
ID=26649333
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/496,036 Abandoned US20050067217A1 (en) | 2001-11-20 | 2002-10-14 | Exhaust system and a method of producing the same |
Country Status (12)
Country | Link |
---|---|
US (1) | US20050067217A1 (en) |
EP (1) | EP1451455B1 (en) |
JP (1) | JP2005509792A (en) |
KR (1) | KR20050036900A (en) |
CN (1) | CN1589366A (en) |
AT (1) | ATE317943T1 (en) |
AU (1) | AU2002350556A1 (en) |
BR (1) | BR0214300A (en) |
DE (1) | DE60209253T2 (en) |
EA (1) | EA005845B1 (en) |
ES (1) | ES2258658T3 (en) |
WO (1) | WO2003044345A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080053748A1 (en) * | 2004-01-27 | 2008-03-06 | Emler Don R | Vehicle exhaust systems |
US20080251314A1 (en) * | 2006-10-06 | 2008-10-16 | Yamaha Hatsudoki Kabushiki Kaisha | Exhaust System for an Engine and Motorcycle Including the Exhaust System |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017130865A1 (en) * | 2017-12-21 | 2019-06-27 | Faurecia Emissions Control Technologies, Germany Gmbh | Exhaust system for an internal combustion engine of a motor vehicle and motor vehicle |
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US4133479A (en) * | 1977-08-22 | 1979-01-09 | Musitano Charles M | Exhaust gas muffler for an internal combustion engine |
US4233812A (en) * | 1977-04-28 | 1980-11-18 | Leistritz Hans Karl | Gas discharge apparatus |
US4446942A (en) * | 1979-06-06 | 1984-05-08 | Swiss Aluminium Ltd. | Device for conducting away the exhaust gases from internal combustion engines |
US5119551A (en) * | 1989-02-06 | 1992-06-09 | Tennessee Gas Pipeline Company | Method of making a catalytic converter with one piece housing |
US6415889B1 (en) * | 1998-01-30 | 2002-07-09 | Arvinmeritor, Inc. | Stamped-formed muffler apparatus and assembly process |
US6457553B1 (en) * | 2000-08-04 | 2002-10-01 | Nelson Industries, Inc. | Low cost muffler |
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 |
US6681889B2 (en) * | 2000-12-06 | 2004-01-27 | J. Eberspacher Gmbh & Co. | Exhaust muffler for a fuel-operated heating device |
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DE2930046C2 (en) * | 1979-07-24 | 1982-02-04 | Alcan Aluminiumwerke GmbH, 3400 Göttingen | Exhaust silencers for internal combustion engines |
DE3101252A1 (en) * | 1981-01-16 | 1982-09-02 | Alcan Aluminiumwerke GmbH, 3400 Göttingen | EXHAUST SILENCER FOR INTERNAL COMBUSTION ENGINES AND METHOD FOR THE PRODUCTION THEREOF |
ES2024184A6 (en) * | 1990-04-19 | 1992-02-16 | Turboceramic S L | Improved silencer for motor-vehicle exhaust pipes |
AU2438899A (en) * | 1998-02-09 | 1999-08-23 | Klil Industries Ltd. | Aluminum muffler and method of manufacture |
-
2002
- 2002-10-14 EP EP02785228A patent/EP1451455B1/en not_active Expired - Lifetime
- 2002-10-14 JP JP2003545946A patent/JP2005509792A/en active Pending
- 2002-10-14 KR KR1020047007497A patent/KR20050036900A/en not_active Application Discontinuation
- 2002-10-14 BR BR0214300-3A patent/BR0214300A/en not_active Application Discontinuation
- 2002-10-14 AU AU2002350556A patent/AU2002350556A1/en not_active Abandoned
- 2002-10-14 EA EA200400694A patent/EA005845B1/en not_active IP Right Cessation
- 2002-10-14 ES ES02785228T patent/ES2258658T3/en not_active Expired - Lifetime
- 2002-10-14 CN CNA028231023A patent/CN1589366A/en active Pending
- 2002-10-14 AT AT02785228T patent/ATE317943T1/en not_active IP Right Cessation
- 2002-10-14 DE DE60209253T patent/DE60209253T2/en not_active Expired - Fee Related
- 2002-10-14 US US10/496,036 patent/US20050067217A1/en not_active Abandoned
- 2002-10-14 WO PCT/EP2002/011610 patent/WO2003044345A1/en active IP Right Grant
Patent Citations (9)
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US3100140A (en) * | 1960-05-31 | 1963-08-06 | Calumet & Hecla | Catalytic automotive exhaust converter |
US4233812A (en) * | 1977-04-28 | 1980-11-18 | Leistritz Hans Karl | Gas discharge apparatus |
US4133479A (en) * | 1977-08-22 | 1979-01-09 | Musitano Charles M | Exhaust gas muffler for an internal combustion engine |
US4446942A (en) * | 1979-06-06 | 1984-05-08 | Swiss Aluminium Ltd. | Device for conducting away the exhaust gases from internal combustion engines |
US5119551A (en) * | 1989-02-06 | 1992-06-09 | Tennessee Gas Pipeline Company | Method of making a catalytic converter with one piece housing |
US6415889B1 (en) * | 1998-01-30 | 2002-07-09 | Arvinmeritor, Inc. | Stamped-formed muffler apparatus and assembly process |
US6457553B1 (en) * | 2000-08-04 | 2002-10-01 | Nelson Industries, Inc. | Low cost muffler |
US6681889B2 (en) * | 2000-12-06 | 2004-01-27 | J. Eberspacher Gmbh & Co. | Exhaust muffler for a fuel-operated heating device |
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 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080053748A1 (en) * | 2004-01-27 | 2008-03-06 | Emler Don R | Vehicle exhaust systems |
US7506722B2 (en) * | 2004-01-27 | 2009-03-24 | Emler Don R | Vehicle exhaust systems |
US20080251314A1 (en) * | 2006-10-06 | 2008-10-16 | Yamaha Hatsudoki Kabushiki Kaisha | Exhaust System for an Engine and Motorcycle Including the Exhaust System |
US7624842B2 (en) * | 2006-10-06 | 2009-12-01 | Yamaha Hatsudoki Kabushiki Kaisha | Exhaust system for an engine and motorcycle including the exhaust system |
Also Published As
Publication number | Publication date |
---|---|
ES2258658T3 (en) | 2006-09-01 |
BR0214300A (en) | 2004-10-26 |
EA200400694A1 (en) | 2004-12-30 |
JP2005509792A (en) | 2005-04-14 |
DE60209253T2 (en) | 2006-11-09 |
KR20050036900A (en) | 2005-04-20 |
CN1589366A (en) | 2005-03-02 |
WO2003044345A1 (en) | 2003-05-30 |
EP1451455A1 (en) | 2004-09-01 |
AU2002350556A1 (en) | 2003-06-10 |
ATE317943T1 (en) | 2006-03-15 |
EA005845B1 (en) | 2005-06-30 |
DE60209253D1 (en) | 2006-04-20 |
EP1451455B1 (en) | 2006-02-15 |
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Legal Events
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AS | Assignment |
Owner name: NORSK HYDRO ASA, NORWAY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HANSEN, HELGE REIMER;REEL/FRAME:015479/0529 Effective date: 20041004 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |