US20090139220A1 - Air-gap insulated exhaust manifold - Google Patents
Air-gap insulated exhaust manifold Download PDFInfo
- Publication number
- US20090139220A1 US20090139220A1 US11/908,373 US90837306A US2009139220A1 US 20090139220 A1 US20090139220 A1 US 20090139220A1 US 90837306 A US90837306 A US 90837306A US 2009139220 A1 US2009139220 A1 US 2009139220A1
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- United States
- Prior art keywords
- exhaust manifold
- intermediate plate
- manifold according
- tubes
- air gap
- 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.)
- Abandoned
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- 239000011888 foil Substances 0.000 claims abstract description 7
- 230000000295 complement effect Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Images
Classifications
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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
- F01N13/08—Other arrangements or adaptations of exhaust conduits
- F01N13/10—Other arrangements or adaptations of exhaust conduits of 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
- F01N13/08—Other arrangements or adaptations of exhaust conduits
- F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
- F01N13/102—Other arrangements or adaptations of exhaust conduits of exhaust manifolds 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
- 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
- F01N13/18—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
-
- 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
Definitions
- the invention relates to an air gap insulated exhaust manifold comprising at least one cylinder-side inlet tube and at least one exhaust pipe-side outlet tube, the tubes being arranged into one another in the region of a collecting chamber, forming an air gap which surrounds the collecting chamber at least in part.
- inlet tube(s) and the outlet tube are arranged into one another so as to be movable in the broadest sense, in order to be able to compensate for the enormous linear expansion of the tubes in operation, whereby the load of the tubes is supposed to be reduced, too.
- inlet and outlet tubes are usually welded to a flange at the side of the engine block.
- the inner tube however, freely projects into the interior of the outer tube, so that the tubes can move relative to each other during thermal expansion without any chance that warping occurs.
- the inlet and outlet tubes are not arranged so as to be gas-tight relative to each other, since several inlet tubes are usually put into one another so as to be movable relative to each other for length compensation. This has the effect that the outer tube is impinged in the region of the collecting chamber by unavoidable leakage flows. It is in particular at the leakage points of the internal tube(s) where the outer tube will have a so-called hot spot, i.e. a punctual area with maximum thermal load.
- the exhaust manifold of the type initially mentioned provides at least one intermediate plate being arranged in the air gap.
- This intermediate plate usually has no load-bearing function, but serves for shielding the outer tube.
- the intermediate plate can be advantageously designed so as to be extremely thin, with a maximum thickness of 0.3 mm, preferably 0.15 mm; in a sense, it is just a sort of sandwiched foil. During experiments it has been shown that this foil-like, thin sheet metal on its own is completely sufficient in order to avoid the hot spots.
- These several intermediate plates may completely or for the most part surround the collecting chamber, hence, function as an intermediate wall between the outer tube and the inner tube.
- the intermediate plates have a shell-like construction and, according to a further embodiment, can complement each other so as to constitute a hollow body. If necessary, it would also be possible to form the hollow body from one intermediate plate.
- shell-like construction stands for a non-even plate having an arched cross-section, preferably a semicircle cross-section.
- the intermediate plates or shells do not have to be fastened to each other, for instance brazed or welded; only the process of fitting one into another will already be sufficient to form a hollow body which for the required purposes is closed to a sufficient extent. It turned out, that this hollow body does not have to be gas-tight or largely gas-tight.
- the intermediate plate has a thickness which is considerably smaller and flexibility being considerably larger than that of the inlet or outlet tubes, so that the intermediate plate in the preferred embodiment has no load-bearing function at all.
- the maximum thickness amounts to 0.3 mm, preferably 0.15 mm at most. Experiments have shown that even a maximum limit of 0.10 mm results in an excellent thermal insulation from the outer to the inner wall.
- the exposed inner side of the outer wall, delimiting the air gap, which is formed by the inlet or outlet tube (depending on which one of the tubes lies on the outside), is covered by the intermediate plate to at least 80%, the latter in particular being situated in front of the hot spots.
- the air gap can be subdivided into an inner and an outer portion, improving hereby the insulating effect.
- the intermediate plate has protrusions which serve as spacers and with which it has a small, for instance a punctual, area of contact with the inlet and/or outlet tube, so that it may be clamped between the two tubes.
- Production of the intermediate plate can be executed in a very simple manner, e.g. by deep-drawing, with a so-called pimpled foil being preferably used here, i.e. a foil which is not plane but has an uneven surface, the rear side defining the form-related negative of the front side. Due to this irregular surface, sufficient material will still be available during deep-drawing so that the risk of crack formation is reduced.
- a so-called pimpled foil being preferably used here, i.e. a foil which is not plane but has an uneven surface, the rear side defining the form-related negative of the front side. Due to this irregular surface, sufficient material will still be available during deep-drawing so that the risk of crack formation is reduced.
- the intermediate plate preferably should have a form corresponding to the external wall of the collecting chamber.
- corresponding means that the foil should not have contact over the full surface area at the inner side of the outer wall, of course, but for the most part has a uniform distance thereto.
- not only one inlet tube is provided, but there are several cylinder-side inlet tubes which open into the collecting chamber being fit into one another so as to be movable relative to each other.
- the intermediate plate surrounds all inlet tubes which are provided in the region of the collecting chamber.
- FIG. 1 is a schematic longitudinal sectional view through an exhaust manifold according to the invention
- FIG. 2 is a sectional view along line II-II in FIG. 1 .
- FIG. 3 is a sectional view along line III-III in FIG. 1 .
- FIG. 1 shows an air gap insulated exhaust manifold which connects three cylinder-side inlet tubes 2 , 4 , 6 with each other.
- the cylinder outlets are symbolized by the circles 8 .
- Each cylinder 8 has its own inlet tube 2 , 4 , 6 associated with it.
- the inlet tubes 2 , 4 , 6 have a portion 9 which comes from the cylinder and with which they are welded to the cylinder block flange 11 ( FIG. 3 ), and a freely protruding portion with which they further extend into an exhaust pipe-side outlet tube 10 ( FIGS. 2 and 3 ).
- the exhaust pipe-side outlet tube 10 consists of upper and lower shells 12 , 14 and has an outlet-side flange 16 to which an exhaust gas tube is fastened.
- the outlet tube 10 On the inlet side, the outlet tube 10 likewise is welded to the cylinder block flange 11 .
- the outlet tube 10 surrounds the inlet tubes 2 , 4 , 6 in the region where these merge into each other in terms of flow.
- the inlet tubes 2 , 4 , 6 are fit into one another.
- the middle inlet tube 4 has lateral, enlarged reception openings pointing in opposite directions and movably receiving the left and right inlet tubes 2 , 6 .
- a collecting chamber 18 is formed which essentially has an elongated cylindrical shape and extends from the left-hand portion of the left inlet tube 2 as far as to the right-hand portion of the right inlet tube 6 in the drawing plane in FIG. 1 .
- an air gap 20 is formed which has an approximately uniform thickness and serves the thermal insulation.
- this air gap 20 is intended to provide a free expansion of the inlet tubes 2 , 4 , 6 relative to the outlet tube 10 , because the inlet and outlet tubes are fastened to each other only at one end and, hence, are movably arranged into each other beyond that end.
- the air gap surrounds the collecting chamber 18 on all sides.
- Two shell-shaped, deep-drawn intermediate plates with a maximum thickness of 0.3 mm are arranged in the air gap 20 and entirely surround the collecting chamber 18 .
- an upper intermediate plate 22 is fit into a lower intermediate plate 24 , with the intermediate plates 22 , 24 being slightly clamped in the region of their contact edges 26 ( FIG. 2 ).
- the intermediate plates 22 , 24 cover the inlet tubes 2 to 6 immediately after penetrating the outlet tube 10 ( FIG. 3 ), and extend as far as to the flange 16 , as can be seen in FIG. 1 .
- the intermediate plates 22 , 24 complement each other so as to form a very flexible, thin hollow body which is clamped between the inlet tubes 2 to 6 and the outlet tube 10 , without being permanently fastened to the tubes and without having any load-bearing function.
- Spacers in the form of punctual protrusions 28 serve for making contact and maintaining the distance of the intermediate plates 22 , 24 to the inlet tubes 2 to 6 and the outlet tube 10 , so that the air gap 20 is subdivided by the intermediate plates in an inner and an outer portion 30 , 32 .
- the intermediate plates 22 , 24 are produced by deep-drawing a foil of uniform thickness but with a slightly dimpled surface, so that material can flow during deep-drawing.
- the inlet tubes 2 to 6 , the outlet tube 10 and/or the intermediate plates 22 , 24 may be multi-layered composite parts which consist of several superimposed, foil-like metal sheets which are connected with each other and have a thickness of about 0.05 to 0.1 mm each.
- the intermediate plates are made of temperature-resistant material, e.g. AISI 309.
Abstract
An air gap insulated exhaust manifold includes several inlet tubes which are fit into one another so as to be movable relative to each other and complement each other so as to constitute a collecting chamber. The inlet tubes are surrounded by an outlet tube, an air gap resulting between the inlet and outlet tubes. Two shell-type intermediate plates are provided in this air gap and complement each other so as to constitute a hollow body, which prevents that any leakage flows directly hit the outlet tube. The intermediate plates are produced by deep-drawing a pimpled foil.
Description
- The invention relates to an air gap insulated exhaust manifold comprising at least one cylinder-side inlet tube and at least one exhaust pipe-side outlet tube, the tubes being arranged into one another in the region of a collecting chamber, forming an air gap which surrounds the collecting chamber at least in part.
- With exhaust manifolds, in particular for gasoline-operated engines, the tubes are subject to enormous thermal loads. This is why so-called air gap insulated exhaust manifolds exist, as they are described in DE 197 52 773 A1, for instance. In the region of the manifold usually several inlet tubes are brought together, which are connected to the engine block in the region of the cylinder outlets by means of flanges. These inlet tubes open into a collecting chamber, from where the gas flows into an outlet tube which is connected to the exhaust gas tube by means of a flange or constitutes a portion thereof. The inlet tube(s) and the outlet tube are put into each other such that a thermally insulating air gap is formed between them in the region of the collecting chamber. In this context, it is of secondary importance and a matter of concept which one of the two tubes forms the inner and which one the outer tube. It is usual that the inlet tube(s) and the outlet tube are arranged into one another so as to be movable in the broadest sense, in order to be able to compensate for the enormous linear expansion of the tubes in operation, whereby the load of the tubes is supposed to be reduced, too. To this end, inlet and outlet tubes are usually welded to a flange at the side of the engine block. The inner tube, however, freely projects into the interior of the outer tube, so that the tubes can move relative to each other during thermal expansion without any chance that warping occurs. The inlet and outlet tubes are not arranged so as to be gas-tight relative to each other, since several inlet tubes are usually put into one another so as to be movable relative to each other for length compensation. This has the effect that the outer tube is impinged in the region of the collecting chamber by unavoidable leakage flows. It is in particular at the leakage points of the internal tube(s) where the outer tube will have a so-called hot spot, i.e. a punctual area with maximum thermal load.
- It is an object of the invention to reduce the thermal loads of the outer tube in the region of the collecting chamber in a very simple manner.
- For this purpose, the exhaust manifold of the type initially mentioned provides at least one intermediate plate being arranged in the air gap. This intermediate plate usually has no load-bearing function, but serves for shielding the outer tube.
- This is why the intermediate plate can be advantageously designed so as to be extremely thin, with a maximum thickness of 0.3 mm, preferably 0.15 mm; in a sense, it is just a sort of sandwiched foil. During experiments it has been shown that this foil-like, thin sheet metal on its own is completely sufficient in order to avoid the hot spots.
- It will be preferred that several intermediate plates are provided.
- These several intermediate plates may completely or for the most part surround the collecting chamber, hence, function as an intermediate wall between the outer tube and the inner tube.
- Preferably, the intermediate plates have a shell-like construction and, according to a further embodiment, can complement each other so as to constitute a hollow body. If necessary, it would also be possible to form the hollow body from one intermediate plate. In this context, “shell-like” construction stands for a non-even plate having an arched cross-section, preferably a semicircle cross-section.
- It is sufficient if the intermediate plates are simply fit into one another at their contact edges.
- The intermediate plates or shells do not have to be fastened to each other, for instance brazed or welded; only the process of fitting one into another will already be sufficient to form a hollow body which for the required purposes is closed to a sufficient extent. It turned out, that this hollow body does not have to be gas-tight or largely gas-tight.
- The intermediate plate has a thickness which is considerably smaller and flexibility being considerably larger than that of the inlet or outlet tubes, so that the intermediate plate in the preferred embodiment has no load-bearing function at all. The maximum thickness amounts to 0.3 mm, preferably 0.15 mm at most. Experiments have shown that even a maximum limit of 0.10 mm results in an excellent thermal insulation from the outer to the inner wall.
- The exposed inner side of the outer wall, delimiting the air gap, which is formed by the inlet or outlet tube (depending on which one of the tubes lies on the outside), is covered by the intermediate plate to at least 80%, the latter in particular being situated in front of the hot spots.
- Owing to the intermediate plate, the air gap can be subdivided into an inner and an outer portion, improving hereby the insulating effect.
- According to one embodiment, the intermediate plate has protrusions which serve as spacers and with which it has a small, for instance a punctual, area of contact with the inlet and/or outlet tube, so that it may be clamped between the two tubes.
- Production of the intermediate plate can be executed in a very simple manner, e.g. by deep-drawing, with a so-called pimpled foil being preferably used here, i.e. a foil which is not plane but has an uneven surface, the rear side defining the form-related negative of the front side. Due to this irregular surface, sufficient material will still be available during deep-drawing so that the risk of crack formation is reduced.
- The intermediate plate preferably should have a form corresponding to the external wall of the collecting chamber. In this context, the term “corresponding” means that the foil should not have contact over the full surface area at the inner side of the outer wall, of course, but for the most part has a uniform distance thereto.
- It turned out, that the intermediate plate simply has to be inserted in the air gap without being fastened to the inlet or outlet tube. Merely the clamping effect between the two tubes is sufficient, as has already been explained above.
- According to the preferred embodiment, not only one inlet tube is provided, but there are several cylinder-side inlet tubes which open into the collecting chamber being fit into one another so as to be movable relative to each other.
- It is preferred here that the intermediate plate surrounds all inlet tubes which are provided in the region of the collecting chamber.
- Further features and advantages of the invention will be apparent from the following description and the following drawings to which reference is made and in which:
-
FIG. 1 is a schematic longitudinal sectional view through an exhaust manifold according to the invention, -
FIG. 2 is a sectional view along line II-II inFIG. 1 , and -
FIG. 3 is a sectional view along line III-III inFIG. 1 . -
FIG. 1 shows an air gap insulated exhaust manifold which connects three cylinder-side inlet tubes circles 8. Eachcylinder 8 has itsown inlet tube inlet tubes portion 9 which comes from the cylinder and with which they are welded to the cylinder block flange 11 (FIG. 3 ), and a freely protruding portion with which they further extend into an exhaust pipe-side outlet tube 10 (FIGS. 2 and 3 ). The exhaust pipe-side outlet tube 10 consists of upper andlower shells side flange 16 to which an exhaust gas tube is fastened. On the inlet side, theoutlet tube 10 likewise is welded to thecylinder block flange 11. Theoutlet tube 10 surrounds theinlet tubes inlet tubes middle inlet tube 4 has lateral, enlarged reception openings pointing in opposite directions and movably receiving the left andright inlet tubes inlet tubes outlet tube 10, acollecting chamber 18 is formed which essentially has an elongated cylindrical shape and extends from the left-hand portion of theleft inlet tube 2 as far as to the right-hand portion of theright inlet tube 6 in the drawing plane inFIG. 1 . - Between the
inlet tubes outlet tube 10 anair gap 20 is formed which has an approximately uniform thickness and serves the thermal insulation. - Apart from thermal insulation, this
air gap 20 is intended to provide a free expansion of theinlet tubes outlet tube 10, because the inlet and outlet tubes are fastened to each other only at one end and, hence, are movably arranged into each other beyond that end. - The air gap surrounds the
collecting chamber 18 on all sides. - Two shell-shaped, deep-drawn intermediate plates with a maximum thickness of 0.3 mm (just 0.1 mm in the embodiment which is shown) are arranged in the
air gap 20 and entirely surround thecollecting chamber 18. In this arrangement, an upperintermediate plate 22 is fit into a lowerintermediate plate 24, with theintermediate plates FIG. 2 ). - The
intermediate plates inlet tubes 2 to 6 immediately after penetrating the outlet tube 10 (FIG. 3 ), and extend as far as to theflange 16, as can be seen inFIG. 1 . - The
intermediate plates inlet tubes 2 to 6 and theoutlet tube 10, without being permanently fastened to the tubes and without having any load-bearing function. - Spacers in the form of
punctual protrusions 28, having been produced during deep-drawing of theintermediate plates intermediate plates inlet tubes 2 to 6 and theoutlet tube 10, so that theair gap 20 is subdivided by the intermediate plates in an inner and anouter portion - The
intermediate plates - In some embodiments the
inlet tubes 2 to 6, theoutlet tube 10 and/or theintermediate plates - In driving operation, hot exhaust gas flows out of the cylinders via the
inlet tubes 2 to 6 into that part of the exhaust manifold in which the manifold is configured two-shelled, and arrives at thecollecting chamber 18. Due to theinlet tubes 2 to 6 being supported so as to be movable relative to each other, leakage flows will occur, so that the exhaust gas in effect would impinge the inner side of theoutlet tube 10 with high speed and result in hot spots at these places. However, as theintermediate plates air gap 20 outwards, the leakage flows hit theintermediate plates outlet tube 10. - The intermediate plates are made of temperature-resistant material, e.g. AISI 309.
- Through the use of the
intermediate plates outlet tube 10 which have a somewhat lower temperature stability.
Claims (18)
1.-16. (canceled)
17. An air gap insulated exhaust manifold, comprising:
at least one cylinder-side inlet tube,
at least one exhaust pipe side outlet tube spaced apart from the at least one cylinder-side inlet tube in the region of a collecting chamber to form an air gap which surrounds the collecting chamber at least in part, and
at least one intermediate plate arranged in the air gap.
18. The exhaust manifold according to claim 17 , wherein the at least one intermediate plate comprises a plurality of intermediate plates.
19. The exhaust manifold according to claim 18 , wherein the intermediate plates are fit into one another at their contact edges.
20. The exhaust manifold according to claim 17 , wherein the at least one intermediate plate is/are shell-shaped.
21. The exhaust manifold according to claim 17 , wherein the at least one intermediate plate form(s) a hollow body.
22. The exhaust manifold according to claim 17 , wherein the at least one intermediate plate has a maximum thickness of 0.3 mm.
23. The exhaust manifold according to claim 17 , wherein the at least one intermediate plate has a maximum thickness of 0.15 mm.
24. The exhaust manifold according to claim 17 , wherein the at least one intermediate plate covers at least 80% of the exposed inner side of the outer wall delimiting the air gap.
25. The exhaust manifold according to claim 17 , wherein the at least one intermediate plate subdivides the air gap into an inner and an outer portion.
26. The exhaust manifold according to claim 17 , wherein the at least one intermediate plate has protrusions which contact at least one of the inlet and outlet tubes.
27. The exhaust manifold according to claim 17 , wherein the at least one intermediate plate surrounds the inner one of the two tubes in the region of the collecting chamber.
28. The exhaust manifold according to claim 17 , wherein the at least one intermediate plate is a deep-drawn foil which prior to deep-drawing has a pimpled surface.
29. The exhaust manifold according to claim 17 , wherein the at least one intermediate plate has a shape corresponding to the external wall which delimits the air gap.
30. The exhaust manifold according to claim 17 , wherein the at least one intermediate plate is inserted in the air gap without being fastened to the inlet or outlet tubes.
31. The exhaust manifold according to claim 17 , wherein the at least one cylinder-side inlet tube comprises a plurality of cylinder-side inlet tubes which open into the outlet tube and are fit into one another so as to be movable relative to each other.
32. The exhaust manifold according to claim 31 , wherein the at least one intermediate plate surrounds all of the plurality of inlet tubes in the region of the collecting chamber.
33. The exhaust manifold according to claim 17 , wherein the at least one inlet tube(s) and the at least one outlet tube(s) are connected with each other at one end only, and that the inner one of the two tubes freely projects in an unsupported manner into the interior of the outer one of the two tubes.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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DE102005011639.6 | 2005-03-14 | ||
DE102005011639.6A DE102005011639B4 (en) | 2005-03-14 | 2005-03-14 | Air gap insulated exhaust manifold |
PCT/EP2006/001720 WO2006097187A1 (en) | 2005-03-14 | 2006-02-24 | Air-gap insulated exhaust manifold |
Publications (1)
Publication Number | Publication Date |
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US20090139220A1 true US20090139220A1 (en) | 2009-06-04 |
Family
ID=36204637
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US11/908,373 Abandoned US20090139220A1 (en) | 2005-03-14 | 2006-02-24 | Air-gap insulated exhaust manifold |
Country Status (6)
Country | Link |
---|---|
US (1) | US20090139220A1 (en) |
EP (1) | EP1864006B8 (en) |
KR (1) | KR20070112245A (en) |
CN (1) | CN101142383B (en) |
DE (2) | DE102005011639B4 (en) |
WO (1) | WO2006097187A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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US20100223911A1 (en) * | 2009-03-05 | 2010-09-09 | Benteler Automobiltechnik Gmbh | Exhaust gas system |
US20130232960A1 (en) * | 2012-03-08 | 2013-09-12 | Calsonic Kansei Corporation | Dual pipe exhaust manifold |
US20150267597A1 (en) * | 2014-03-20 | 2015-09-24 | Benteler Automobiltechnik Gmbh | Exhaust manifold for exhaust system of a combustion engine |
US9422857B2 (en) | 2014-12-17 | 2016-08-23 | Caterpillar Inc. | Exhaust nozzle tip device and system |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102008019999A1 (en) | 2008-04-21 | 2009-10-22 | J. Eberspächer GmbH & Co. KG | Air gap insulated exhaust manifold |
DE102011012595A1 (en) | 2011-02-28 | 2012-08-30 | Faurecia Emissions Control Technologies, Germany Gmbh | Air gap insulated exhaust pipe e.g. exhaust gas manifold has support plate that is secured between inner and outer walls which are slidingly fitted with inlet portion and outlet portion relative to each other |
DE102014105656B4 (en) * | 2014-04-22 | 2017-02-02 | Benteler Automobiltechnik Gmbh | exhaust manifold |
DE102014014846A1 (en) | 2014-10-07 | 2015-04-23 | Daimler Ag | Air gap insulated exhaust manifold and method of making an air gap isolated exhaust manifold |
DE102015116018A1 (en) * | 2015-09-22 | 2017-03-23 | Tenneco Gmbh | elbow |
EP3708798A1 (en) | 2019-03-13 | 2020-09-16 | GF Casting Solutions AG | Air gap-insulated exhaust manifold |
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- 2005-03-14 DE DE102005011639.6A patent/DE102005011639B4/en active Active
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2006
- 2006-02-24 WO PCT/EP2006/001720 patent/WO2006097187A1/en active Application Filing
- 2006-02-24 US US11/908,373 patent/US20090139220A1/en not_active Abandoned
- 2006-02-24 EP EP06707259A patent/EP1864006B8/en active Active
- 2006-02-24 DE DE502006008707T patent/DE502006008707D1/en active Active
- 2006-02-24 CN CN2006800082804A patent/CN101142383B/en active Active
- 2006-02-24 KR KR1020077023081A patent/KR20070112245A/en not_active Application Discontinuation
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100223911A1 (en) * | 2009-03-05 | 2010-09-09 | Benteler Automobiltechnik Gmbh | Exhaust gas system |
US8826660B2 (en) * | 2009-03-05 | 2014-09-09 | Benteler Automobiltechnik Gmbh | Exhaust gas system |
US20130232960A1 (en) * | 2012-03-08 | 2013-09-12 | Calsonic Kansei Corporation | Dual pipe exhaust manifold |
US20150267597A1 (en) * | 2014-03-20 | 2015-09-24 | Benteler Automobiltechnik Gmbh | Exhaust manifold for exhaust system of a combustion engine |
US9518501B2 (en) * | 2014-03-20 | 2016-12-13 | Benteler Automobiltechnik Gmbh | Exhaust manifold for exhaust system of a combustion engine |
US9422857B2 (en) | 2014-12-17 | 2016-08-23 | Caterpillar Inc. | Exhaust nozzle tip device and system |
Also Published As
Publication number | Publication date |
---|---|
EP1864006B8 (en) | 2011-03-23 |
CN101142383A (en) | 2008-03-12 |
WO2006097187A1 (en) | 2006-09-21 |
EP1864006B1 (en) | 2011-01-12 |
KR20070112245A (en) | 2007-11-22 |
CN101142383B (en) | 2010-12-08 |
DE102005011639B4 (en) | 2015-10-22 |
DE502006008707D1 (en) | 2011-02-24 |
EP1864006A1 (en) | 2007-12-12 |
DE102005011639A1 (en) | 2006-09-21 |
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Legal Events
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Owner name: EMCON TECHNOLOGIES GERMANY (AUGSBURG) GMBH, GERMAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SCHMELZER, GUNTER;REEL/FRAME:019960/0863 Effective date: 20071008 |
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