WO2006037920A1 - Conduit d'echappement - Google Patents
Conduit d'echappement Download PDFInfo
- Publication number
- WO2006037920A1 WO2006037920A1 PCT/FR2005/050804 FR2005050804W WO2006037920A1 WO 2006037920 A1 WO2006037920 A1 WO 2006037920A1 FR 2005050804 W FR2005050804 W FR 2005050804W WO 2006037920 A1 WO2006037920 A1 WO 2006037920A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- exhaust
- tube
- conduit
- ring
- internal
- Prior art date
Links
- 239000007789 gas Substances 0.000 claims abstract description 30
- 230000002093 peripheral effect Effects 0.000 claims abstract description 21
- 238000009413 insulation Methods 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 6
- 238000002485 combustion reaction Methods 0.000 claims description 14
- 239000011810 insulating material Substances 0.000 claims description 14
- 230000035515 penetration Effects 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 8
- 239000000835 fiber Substances 0.000 claims description 6
- 239000007769 metal material Substances 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000007373 indentation Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003584 silencer Effects 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 230000003313 weakening effect 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
- F01N13/06—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 specially adapted for star-arrangement of cylinders, e.g. exhaust manifolds
-
- 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
- F01N13/14—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 thermal insulation
- F01N13/141—Double-walled exhaust pipes or housings
-
- 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
- F01N13/08—Other arrangements or adaptations of exhaust conduits
-
- 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
- F01N13/08—Other arrangements or adaptations of exhaust conduits
- F01N13/085—Other arrangements or adaptations of exhaust conduits having means preventing foreign matter from entering exhaust conduit
-
- 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
- F01N13/14—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 thermal insulation
-
- 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
- F01N2310/00—Selection of sound absorbing or insulating material
- F01N2310/04—Metallic wool, e.g. steel wool, copper wool or the like
-
- 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
- F01N2470/00—Structure or shape of gas passages, pipes or tubes
- F01N2470/24—Concentric tubes or tubes being concentric to housing, e.g. telescopically assembled
Definitions
- the present invention relates to an exhaust duct comprising an exhaust line of an internal combustion engine.
- This invention relates to the field of the automotive industry and more particularly that of the manufacture of equipment ensuring the escape of gases from the combustion of a fuel by an internal combustion engine.
- an exhaust line comprising at least one exhaust duct, for example consisting of an exhaust downcomer connected, on the one hand, to the engine via a collector and, secondly, to a silencer and / or a gas depollution element such as a particulate filter.
- Such an exhaust descent may, again, be connected to a pollution control element (catalyst, particulate filter, etc.) located downstream of this exhaust descent, and whose operation is optimal for exhaust gases. at high temperature so that it is necessary to maintain these gases at a high temperature until they arrive in said depollution element.
- a pollution control element catalyst, particulate filter, etc.
- the peripheral volume receiving the insulating material communicates, at one of its ends, with the internal volume of the inner tube within which the exhaust gases circulate. These gases are then capable of penetrating into the peripheral volume and of being in contact with the insulating material, which must then be chosen to have good resistance to these gases and to high temperatures so as to avoid any degradation.
- an insulating material having such performance is particularly expensive which considerably increases the cost of such an exhaust downhill.
- the outer tube In addition and in order to define a peripheral volume capable of accommodating an insulating material, the outer tube must be positioned appropriately relative to the inner tube which is ensured by means of indentations made at this inner tube or ( and preferably) of this outer tube and which bear against this outer tube, respectively, this inner tube.
- Such indentations adopt, for example, the shape of punches and have drawbacks consisting, on the one hand, in weakening of the exhaust descent and, on the other hand, in the creation of a thermal bridge between the tubes. internal and external resulting in poor performance in terms of insulation, or even a total absence of insulation, the descent exhaust.
- the present invention is designed to overcome the disadvantages of exhaust pipes of the state of the art.
- the invention relates to an exhaust duct that comprises an exhaust line of an internal combustion engine and which comprises, on the one hand, an outer tube and an inner tube positioned inside the outer tube of in such a way as to delimit, between these two tubes, a peripheral volume inside which is implanted a material for a thermal insulation of this duct, on the other hand and at a first end of this exhaust duct, a first means for a connection of this exhaust duct to a first exhaust element, in particular an exhaust gas manifold and, secondly and at a second end of this exhaust duct, a second means for a connection of this conduit to a second exhaust element that includes said exhaust line.
- This exhaust duct is characterized in that it comprises, near its second end, means for preventing the penetration of the exhaust gas, circulating inside the inner tube, in the peripheral volume defined by this inner tube and outer tube.
- the means for preventing gas penetration into the peripheral volume is constituted by a ring engaged over the inner tube and over which is positioned the outer tube and / or the second connecting means.
- the second connecting means is, on the one hand, positioned over said ring and, on the other hand, fitted inside or over the outer tube of which said second connecting means is rendered. solidarity, especially by welding.
- Yet another characteristic relates to the fact that the ring is engaged over the inner tube with the possibility of displacement relative to this inner tube and / or the outer tube and / or the second connecting means, while the conduit comprises means to keep the ring engaged on this inner tube
- the means for holding the ring on the inner tube are constituted by a shoulder that has, internally, the second connecting means and which cooperates with this ring.
- the ring is made of a metallic material and is more particularly constituted by a wire mesh.
- this ring may, again, be made of a thermal insulating material, more particularly based on fibers having a high thermal resistance.
- Another characteristic consists in that the inner and outer tubes are made integral at the first connecting means, in particular by welding.
- the invention also relates to an exhaust descent that includes an exhaust line of an internal combustion engine and which comprises or consists of an exhaust duct as described above.
- the invention relates to an exhaust line of an internal combustion engine comprising an exhaust duct as described above.
- the conduit comprises means for preventing penetration of the gases into the peripheral volume, which prevents these gases from coming into contact with the insulating material which then undergoes no degradation.
- This allows the use of an insulating material which, since it is protected from the exhaust gas, may have a mechanical strength substantially lower than that of the insulating material used in the state of the art and, therefore, present a cost substantially lower than that of the insulating material of the state of the art.
- the inner and outer tubes are made integral with the first connecting means and, on the other hand, the means for preventing penetration of the gases into the peripheral volume are constituted by a ring, located at the second end of the duct, engaged over the inner tube and over which is positioned the outer tube and / or the second connecting means, this with the possibility of displacement of this ring.
- FIG. 1 is a schematic and sectional view of an exhaust duct according to the present invention
- - Figure 2 is a schematic and detailed view of the second end of the exhaust duct illustrated in Figure 1.
- the present invention relates to the field of the automotive industry and more particularly that of the manufacture of equipment ensuring the escape of gases from the combustion of a fuel by an internal combustion engine.
- the invention relates to an exhaust duct 1 which comprises an exhaust line of internal combustion engine.
- an exhaust duct 1 is preferably constituted by an exhaust descent knowing that the present invention is not, however, in any way limited.
- Such an exhaust duct 1 comprises an inner tube 2 inside which the exhaust gases circulate.
- This inner tube 2 can be made in one piece but is preferably made from two assembled half-shells assembled, in particular by welding, which advantageously makes it possible to give such a tube 2 a complex shape, adapted to its environment, especially within an engine compartment.
- This exhaust duct 1 comprises, again, an outer tube 3 inside which said inner tube 2 is implanted, this outer tube 3 being made, preferably, from two pressed half-shells assembled, in particular by welding, this above said inner tube 2.
- This outer tube 3 is made, preferably, from two pressed half-shells assembled, in particular by welding, this above said inner tube 2.
- the positioning of the inner tube 2 inside the outer tube 3 is made in such a way as to delimit between these two tubes 2; 3, a peripheral volume 4 inside which is implanted a material 5 designed to provide thermal insulation of the exhaust duct 1.
- Such insulation makes it possible, on the one hand, to protect the environment of the exhaust duct 1 with respect to the high temperature of the exhaust gases and, on the other hand, to keep the gases at a high temperature at the outlet of the duct 1 so as to allow the optimal operation of the depollution means placed downstream of this duct 1.
- this exhaust duct 1 has two ends 6, 7 including a first end 6 situated upstream of the duct 1 and a second end 7 situated downstream of this duct 1, this being in accordance with FIG. flow direction of gases in this duct 1.
- This duct 1 then comprises, at this first end 6, a first means 8 for a connection of this exhaust duct 1 to a first exhaust element (not shown) and which, in the case of a duct 1 exhaust exhaust defined by an exhaust, is constituted by an exhaust gas manifold.
- such a first connecting means 8 is preferably constituted by a flange or the like.
- This duct 1 comprises, again and at said second end 7, a second means 9 for a connection of this exhaust duct 1 to a second exhaust element (not shown) which, in the case of a duct escape 1 defined by an exhaust descent, is constituted by a silencer or a depollution element, more particularly a particulate filter.
- this second connection means 9 may be constituted by a part making it possible to ensure the connection between a second exhaust element and either the inner tube 2 or the outer tube 3, or even these two tubes 2, 3.
- this second connecting means 9 makes it possible to ensure the connection between the second exhaust element and the outer tube 3, and, on the other hand, is preferably constituted by a hoop or the like.
- this exhaust duct 1 comprises, near its second end 7, means 10 for preventing the penetration of the exhaust gas, flowing inside the inner tube 2, in the peripheral volume 4 delimited through this inner tube 2 and the outer tube 3.
- the means 10 for preventing penetration of the gases into the peripheral volume 4 consist of a ring 11, on the one hand, engaged over the inner tube 2 and, on the other hand, over which 11 is positioned the outer tube 2 and / or the second connecting means 9.
- connection means 9 which is engaged over said ring 11.
- this second connecting means 9 is, on the one hand, positioned over said ring 11 and, secondly, fitted over or, and preferably (Figure 2), inside the outer tube 3 which the second connecting means 9 is secured, in particular by welding.
- the inner tube 2 is likely to adopt a relative movement with respect to the outer tube 3 due to thermal differential expansion phenomena. Such relative movement is, more particularly, perceptible at the second end 7 of the duct 1 since this inner tube 2 is only secured to the outer tube 3 at the first end 6 of the duct 1.
- this ring 11 is made integral with the inner tube 2 and is then able to move relative to the outer tube 3 and / or the second connecting means 9.
- this ring 11 can be secured to the outer tube 3 and / or the second connecting means 9 so that it is the inner tube 2 which is able to move relative to the ring 11.
- the ring 11 is engaged over the inner tube 2 with the possibility of displacement relative to this inner tube 2, with respect to the outer tube 3 and with respect to the second connecting means 9.
- the exhaust duct 1 comprises, again, means 12 for holding the ring 11 engaged on the inner tube 2.
- Such means 12 advantageously make it possible to maintain the ring 11 on the inner tube 2 even at the relative movements of this inner tube 2 with respect to the outer tube 3 and with respect to the second connection means 9.
- such means 12 for holding the ring 11 on the inner tube 2 are constituted by a shoulder 13 which internally comprises the second connection means 9 and which cooperates with this ring 11.
- the ring 11 is made of a metallic material and is more particularly constituted by a wire mesh.
- this ring 11 may be made of a thermal insulating material, more particularly based on fibers having a high thermal resistance, for example non-intumescent fibers of the type described in EP patent application. 906,495.
- means 10 to prevent penetration of the exhaust gas into the peripheral volume 4 advantageously allows to avoid having, inside this peripheral volume 4 and all along exhaust pipe 1, an insulating material 5 particularly resistant to hot exhaust gases and, therefore, particularly expensive.
- an insulating material may, for example, be reserved solely for producing a ring 11 while the insulating material disposed in the peripheral volume 4, all along the exhaust duct 1 except at its second end 7 , may be constituted by fibers having: lower mechanical strength and considerably cheaper.
- the invention also relates to an exhaust descent that includes an exhaust line of an internal combustion engine and which comprises or consists of an exhaust duct 1 as described above.
- the invention relates to an exhaust line of an internal combustion engine comprising an exhaust duct 1 as described above.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/576,492 US20090139219A1 (en) | 2004-10-01 | 2005-10-03 | Exhaust conduit |
EP05810747A EP1797296A1 (fr) | 2004-10-01 | 2005-10-03 | Conduit d'echappement |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0452232 | 2004-10-01 | ||
FR0452232A FR2876147B1 (fr) | 2004-10-01 | 2004-10-01 | Conduit d'echappement |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006037920A1 true WO2006037920A1 (fr) | 2006-04-13 |
Family
ID=34950802
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2005/050804 WO2006037920A1 (fr) | 2004-10-01 | 2005-10-03 | Conduit d'echappement |
Country Status (5)
Country | Link |
---|---|
US (1) | US20090139219A1 (fr) |
EP (1) | EP1797296A1 (fr) |
KR (1) | KR20070072546A (fr) |
FR (1) | FR2876147B1 (fr) |
WO (1) | WO2006037920A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB201207201D0 (en) * | 2012-04-24 | 2012-06-06 | Perkins Engines Co Ltd | Emissions cleaning module for a diesel engine |
CN108590828B (zh) * | 2018-06-21 | 2024-04-12 | 重庆陵川汽车零部件制造技术有限公司 | 一种用于汽车排气管的消音管 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5293743A (en) * | 1992-05-21 | 1994-03-15 | Arvin Industries, Inc. | Low thermal capacitance exhaust processor |
JPH07174020A (ja) * | 1993-12-20 | 1995-07-11 | Calsonic Corp | 車両排気系用二重管 |
EP0722040A2 (fr) * | 1995-01-13 | 1996-07-17 | Toyota Jidosha Kabushiki Kaisha | Tuyau d'échappement d'un moteur |
US20030182937A1 (en) * | 2002-03-27 | 2003-10-02 | Yumex Corporation | Structure of an exhaust manifold branch collecting portion |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3693665A (en) * | 1970-01-28 | 1972-09-26 | Shell Oil Co | Pipeline for the transport of cold liquids |
US4004888A (en) * | 1972-04-07 | 1977-01-25 | Kali-Chemie Aktiengesellschaft | Exhaust gas cleaning arrangement with a resiliently supported monolithic ceramic catalyzer |
US3864908A (en) * | 1972-06-19 | 1975-02-11 | Paul G Lahaye | Dry insulated parts and method of manufacture |
US4998597A (en) * | 1989-07-31 | 1991-03-12 | Manville Corporation | Insulated exhaust pipe attachment means |
US5495873A (en) * | 1993-10-13 | 1996-03-05 | Benteler Industries, Inc. | Patterned air gap engine exhaust conduit |
US6209319B1 (en) * | 1998-09-28 | 2001-04-03 | Honda Giken Kogyo Kabushiki Kaisha | Pipe assembly having inner and outer pipes |
DE60017044T2 (de) * | 1999-10-08 | 2006-01-12 | Kabushiki Kaisha Yutaka Giken, Hamamatsu | Abgasleitungsvorrichtung mit einer Doppelleitungsanordnung |
DE102005022114A1 (de) * | 2005-05-12 | 2006-11-16 | Arvinmeritor Emissions Technologies Gmbh | Luftspaltisolierte Fahrzeugabgasleitung |
-
2004
- 2004-10-01 FR FR0452232A patent/FR2876147B1/fr active Active
-
2005
- 2005-10-03 EP EP05810747A patent/EP1797296A1/fr not_active Withdrawn
- 2005-10-03 WO PCT/FR2005/050804 patent/WO2006037920A1/fr active Application Filing
- 2005-10-03 KR KR1020077009524A patent/KR20070072546A/ko not_active Application Discontinuation
- 2005-10-03 US US11/576,492 patent/US20090139219A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5293743A (en) * | 1992-05-21 | 1994-03-15 | Arvin Industries, Inc. | Low thermal capacitance exhaust processor |
JPH07174020A (ja) * | 1993-12-20 | 1995-07-11 | Calsonic Corp | 車両排気系用二重管 |
EP0722040A2 (fr) * | 1995-01-13 | 1996-07-17 | Toyota Jidosha Kabushiki Kaisha | Tuyau d'échappement d'un moteur |
US20030182937A1 (en) * | 2002-03-27 | 2003-10-02 | Yumex Corporation | Structure of an exhaust manifold branch collecting portion |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 10 30 November 1995 (1995-11-30) * |
Also Published As
Publication number | Publication date |
---|---|
KR20070072546A (ko) | 2007-07-04 |
FR2876147A1 (fr) | 2006-04-07 |
EP1797296A1 (fr) | 2007-06-20 |
US20090139219A1 (en) | 2009-06-04 |
FR2876147B1 (fr) | 2011-04-22 |
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