EP1591636A1 - Collecteur d'échappement isolé par une couche d'air - Google Patents

Collecteur d'échappement isolé par une couche d'air Download PDF

Info

Publication number: EP1591636A1
Authority: EP; European Patent Office
Prior art keywords: inner tube; exhaust manifold; inlet; outer tube; longitudinal direction
Prior art date: 2004-04-29
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Granted

Application number

EP05101601A

Other languages

German (de)

English (en)

Other versions

EP1591636B1 (fr

Inventor

Thomas Nording

Thomas Beck

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Eberspaecher Climate Control Systems GmbH and Co KG

Original Assignee

J Eberspaecher GmbH and Co KG

Priority date (The priority date 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 date listed.)

2004-04-29

Filing date

2005-03-02

Publication date

2005-11-02

2005-03-02 Application filed by J Eberspaecher GmbH and Co KG filed Critical J Eberspaecher GmbH and Co KG

2005-11-02 Publication of EP1591636A1 publication Critical patent/EP1591636A1/fr

2007-06-13 Application granted granted Critical

2007-06-13 Publication of EP1591636B1 publication Critical patent/EP1591636B1/fr

2025-03-02 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

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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
- 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
- F01N2470/00—Structure or shape of exhaust 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 air gap insulated Exhaust manifold of an internal combustion engine, in particular in one Motor vehicle, having the features of the preamble of Claim 1.
Such exhaust manifold is for example from the DE 44 44 760 A1 discloses and comprises a in a Longitudinally extending manifold, one in the Longitudinally oriented outlet opening, several across the Longitudinally oriented inlet openings and an in extending longitudinally, the inlet openings containing flange.
Such exhaust manifold is doing by an outer tube attached to the flange and an under Forming an air gap insulation in the outer tube inserted inner tube formed.
a material-saving Construction is achieved in the known exhaust manifold thereby in that in the region of at least one of the inlet openings Gas leading outer tube section is provided by the respective inlet opening to an associated, from the flange spaced inner tube inlet leads.
Air gap insulated, double-walled exhaust manifolds are included Exhaust systems of internal combustion engines, in particular of Motor vehicles, increasingly use and provide for one optimal operation of a downstream catalyst. To the they cause a reduced heat emission of the exhaust gas to the environment, so that the exhaust gas with higher temperature can be supplied to the respective catalyst. This is especially during the warm-up phase of Internal combustion engine of importance, since thereby the catalyst can reach its working temperature very quickly. To the others reduce the air gap insulated exhaust manifolds Heat application of components that z. B. in the engine compartment are arranged adjacent to the exhaust manifold.
the air gap insulation inevitably cause the inner tube higher temperatures is exposed as the outer tube.
the episode stretches the inner tube in the operation of the internal combustion engine stronger as the outer tube.
the resulting problematic leads to an increased design effort in the known conventional exhaust manifolds.
the inner tube be configured in several parts, wherein the individual inner tube parts via sliding seats together are movably mounted. In this way, the move individual inner tube parts to each other to a compensate thermal expansion.
the associated Production cost is relatively large.
the present invention deals with the problem for an exhaust manifold of the type mentioned a to provide simplified embodiment, in particular with a reduced effort can be produced.
the present invention is based on the general Thoughts, the inner tube exclusively in one Fix the fixing area on the outer tube, which is relative to a longitudinal extent of the exhaust manifold approximately in the middle located.
This longitudinal extent is thereby the largest Dimension of the exhaust manifold predetermined and runs in substantially parallel to the longitudinal direction of the manifold and the flange. In this longitudinal direction it comes in Operation of the internal combustion engine for the largest thermal conditional expansion of the exhaust manifold and the inner tube relative to the outer tube.
the targeted positioning of the Fixation area in the middle of the longitudinal extension are the minimized to expected relative movements.
the invention provides, the inner tube outside the Fixier Schemes at least in the longitudinal direction relative to To arrange the outer tube movable, which leads to a thermally induced expansion of the inner tube relative to Outer tube at least in the longitudinal direction almost tension-free is possible. Thermal stresses can thus avoided at least in the longitudinal direction.
This basically gives the possibility that To design the inner tube in one piece; in particular, one is multi-part construction with nested ones Inner tube parts not required. Noteworthy here, that at the same time the material-saving advantages known exhaust manifold can still be used, as further in the area of at least one inlet opening Gas leading outer tube section is provided.
fixation area only in the area of those Inlet opening is formed, with respect to the Longitudinal extent of the exhaust manifold arranged approximately centrally is.
the area of this inlet opening can be particularly simple a firm connection between inner tube and outer tube getting produced.
the inner tube is in Inserted the area of the inlet opening into the outer tube and soldered and / or welded there with this.
an exhaust manifold 1 includes According to the invention, a manifold 2, located in a indicated by a broken line longitudinal direction. 3 extends, an outlet opening 4, which is substantially in the Oriented longitudinally 3, as well as several, here exemplarily three inlet openings 5, each in the essentially oriented transversely to the longitudinal direction 3.
the Orientation of the openings 4, 5 results from the Normal direction of the associated opening plane in which the respective opening 4, 5 is located. At the same time corresponds to the Orientation of the respective opening 4, 5 of Main flow direction within the respective opening 4, 5th
the exhaust manifold 1 comprises a flange 6, the also in the longitudinal direction 3 or parallel thereto extends and which contains the inlet openings 5.
a Internal combustion engine are attached, z. B. by means Screws formed by the flange 6 Plug-in openings 7 are pushed through.
the exhaust manifold 1 thus forms a transition from the internal combustion engine to an exhaust line of the internal combustion engine, in particular in a motor vehicle.
the exhaust manifold 1 consists of its outlet opening 4 bis to its inlet openings 5 from an outer tube 10 and out an inner tube 11, which under formation of a Air gap insulation 12 is inserted into the outer tube 10. Accordingly, this is a Air gap insulated or double-walled exhaust manifold 1.
One constructive feature is seen, among other things, in that in the range of at least one, here in the range of two inlet openings 5, namely in the region of the two right inlet openings 5, one each gas-conducting outer pipe section 13 is provided. These Outside pipe sections 13 each lead from the associated inlet opening 5 to an associated Inner tube inlet 14, each spaced from the flange 6 is arranged.
This fixing region 15 is specifically chosen that he with respect to the longitudinal direction 3 approximately midway between the outlet port 4 shown on the left and the farthest from the outlet opening 4, shown on the right Inlet opening 5 is arranged.
the Fixation area 15 exclusively in the area of the left formed inlet opening 5 formed, ie in the area that inlet opening 5, with respect to the longitudinal direction 3 approximately in the middle between the outlet opening 4 and the am farthest, shown on the right inlet port 5 lies.
the fixing portion 15 is appropriate ring-shaped and extends in Circumferential direction of the inlet opening 5.
the inner tube 11 extends appropriately in the fixing region 15 up to or into the flange 6 is the inner tube 11 in the area of the associated Inlet opening 5 attached to the outer tube 10.
the outer tube 10 is in turn attached to the flange 6 in the fixing area 15.
the Inner tube 11 thus guided to the inlet opening 5, so that the associated inner tube inlet 14 substantially with the Inlet opening 5 coincides.
this is Single line 19 no gas-carrying outer pipe section 13 intended. Accordingly, the gas-leading Outer pipe sections 13 exclusively in the area of those Inlet openings 5 are provided outside the Fixing 15 lie.
a special feature is also in the design of the Transition between inner tube 11 and outer tube 10 seen which is realized in the single line 19, the am farthest from the inlet opening 5 and thus leads to the inlet opening 5 shown on the right.
this Transition is the inner tube 11 via a sliding seat 16 in Outer tube 10 movably mounted.
This sliding seat 16 allows guided relative movements between Inner tube 11 and outer tube 10, which is a significant Component in the longitudinal direction 3 have.
the sliding seat 16 exemplified by several locally limited spacers 17 realized in the area of the associated Inner tube inlet 14 are arranged distributed circumferentially and, for example, by expressions immediately on Inner tube 11 are made.
spacers 17th lead to a localized, areal contact between the inner tube 11 and outer tube 10 and serve for Positioning of the inner tube 11 on the outer tube 10th At the same time enable such spacers 17th Relative displacements of the two tubes 10, 11 to each other.
inner tube 11 can further spacer elements 17th be provided. Exemplary are here along the circumference the outlet 4 further spacer elements 17 is provided. Also with respect to the fixing with the 15th equipped inlet opening 5 another spacer 17 trained.
the spacer elements 17 may additionally or alternatively also on the outer tube 10 by Aus- or impressions be educated.
Freestanding here means that the inner tube 11 in the region of the inner tube inlet 14th at least parallel to the longitudinal direction 3 a game opposite the outer tube 10, so that in this area the inner tube 11 with said inner tube inlet 14 in the longitudinal direction 3 can move relative to the outer tube 10. At the same time, this game ensures the training of Air gap insulation 12 in this area.
a special constructive detail is at a preferred Embodiment seen in that the dimensions of Inner tube 11 and outer tube 10 expediently to each other are matched that parallel to the inlet opening 5 Inner tube inlet 14 at operating temperature approximately centric is aligned with the inlet opening 5.
inlet opening 5 and inner tube inlet 14 advantageous to be coordinated with each other so that a lowest possible flow resistance of the Inlet opening 5 is present in the inner tube 11 to To prevent leakage currents in the annular gap, which is located in Area of the inner tube inlet 14 between outer tube 10 and Inner tube 11 forms.
the Inner tube inlet 14 In the cold state is the Inner tube inlet 14 with respect to the longitudinal direction 3 eccentrically offset from the associated inlet opening. 5 arranged, whereby the inner tube 11 in this area the thermally induced expansion quasi constructively holds.
the to the catalyst 9 flaring inlet funnel 8 in the collecting line 2 integrated, d. H. the inlet funnel 8 also forms an integral part of the Exhaust manifold 1. In this way, the Fluidic transition between manifold 2 and Inlet funnel 8 or catalyst 9 low resistance be realized, at the same time a special effective air gap isolation up to the catalyst 9 can be realized.
the outer tube 10 is usually made of two half-shells assembled in a suitable manner heat resistant are firmly connected to each other, for. B. by crimping, Soldering and / or welding.
the inner tube 11 actually made of one piece be prepared, for. B. by means of a Hydroforming or hydroforming process.
the inner tube 11 of several Individual parts, preferably two half-shells, Assemble, with the items, so preferably the half-shells are firmly connected to each other, z. B. by crimping, soldering and / or welding.
the one-piece Construction for the inner tube 11 allows a special inexpensive production of the inner tube 11 and ultimately a correspondingly inexpensive production for the exhaust manifold 1.
This one-piece construction of the inner tube 11 is made possible especially by the inventively proposed fixation between inner tube 11 and outer tube 10, exclusively in the respect to the longitudinal extension of the exhaust manifold. 1 centrally arranged fixing 15 takes place.
the central fixation which is useful here in the area of those Inlet opening 5 is realized, which is approximately in the middle of Longitudinal extension of the exhaust manifold 1 is arranged takes place the thermally induced expansion in the longitudinal direction 3 on both sides and thereby falls in relative terms small.
Transverse to the longitudinal direction 3 is the heat-related Expansion comparatively small and can, among other things by elastic bending deformation of the inner tube eleventh be caught.
the inner tube 11 can be favored in particular by the fact that the inner tube preferably has a smaller wall thickness than that Outer tube.
the wall thickness of the inner tube 11 at least 50%, preferably between 50% and 80% smaller as the wall thickness of the outer tube 10. This can be the inner tube 11, in particular in the region of Distance elements 17, bulge toward the outer tube 10 out.
the outer shell 10 is about 1.5 mm thick while the inner shell is about 0.3 to 0.5 mm thick.
the inner shell 11 and the outer shell 10 be made of different materials to the capacity and life of the exhaust manifold 1 to optimize.
the spacer elements 17 be positioned and dimensioned in a suitable manner.
beads or similar structural reinforcing measures should be provided for Specifically influencing buckling behavior.
the exhaust manifold 1 here also includes a Connection point 18, for an exhaust gas probe, in particular a Lambda probe.
the air gap insulation 12 may be at another Be arranged embodiment heat-resistant bearing mats, to the insulating effect, the positioning effect and the Holder and damping of the inner tube 11 to improve.
bearing mats can also be used to achieve a gap seal can be used.

Landscapes

Engineering & Computer Science (AREA)
Chemical & Material Sciences (AREA)
Combustion & Propulsion (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Exhaust Silencers (AREA)
Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Transformer Cooling (AREA)
Current-Collector Devices For Electrically Propelled Vehicles (AREA)
Motor Or Generator Cooling System (AREA)

EP05101601A 2004-04-29 2005-03-02 Collecteur d'échappement isolé par une couche d'air Expired - Lifetime EP1591636B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE102004021196		2004-04-29
DE102004021196A DE102004021196B4 (de)	2004-04-29	2004-04-29	Luftspaltisolierter Abgaskrümmer

Publications (2)

Publication Number	Publication Date
EP1591636A1 true EP1591636A1 (fr)	2005-11-02
EP1591636B1 EP1591636B1 (fr)	2007-06-13

Family

ID=34938862

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP05101601A Expired - Lifetime EP1591636B1 (fr)	2004-04-29	2005-03-02	Collecteur d'échappement isolé par une couche d'air

Country Status (4)

Country	Link
US (1)	US7434390B2 (fr)
EP (1)	EP1591636B1 (fr)
AT (1)	ATE364779T1 (fr)
DE (2)	DE102004021196B4 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JP2006266321A (ja) *	2005-03-22	2006-10-05	Toyota Motor Corp	配管製造方法及び二重管型配管の内側配管
DE102006027117A1 (de) *	2006-06-12	2007-12-13	Robert Bosch Gmbh	Aufladesystem für zweistufige Aufladung von V-Verbrennungskraftmaschinen
DE102006041743A1 (de) *	2006-09-04	2008-03-27	Emitec Gesellschaft Für Emissionstechnologie Mbh	Gehäuse für eine Abgasreinigungskomponente zur Ausbildung einer Fügeverbindung mit einem Abgasleitungsabschnitt
JP2008121570A (ja) *	2006-11-13	2008-05-29	Toyota Motor Corp	排気マニホルド
DE102007062662A1 (de) *	2007-12-24	2009-06-25	J. Eberspächer GmbH & Co. KG	Schiebesitz und Abgasbehandlungseinrichtung
DE102007062659A1 (de) *	2007-12-24	2009-06-25	J. Eberspächer GmbH & Co. KG	Abgassammler und zugehöriges Herstellungsverfahren
JP4834041B2 (ja) *	2008-08-04	2011-12-07	本田技研工業株式会社	排ガス浄化装置
DE102008047448B4 (de) *	2008-09-16	2020-09-24	Bayerische Motoren Werke Aktiengesellschaft	Abgasturbolader
DE102009011379B4 (de) *	2009-03-05	2012-07-05	Benteler Automobiltechnik Gmbh	Abgasbaugruppe
JP2013213491A (ja) *	2012-03-08	2013-10-17	Calsonic Kansei Corp	二重管式エキゾースト・マニホールド
JP5890257B2 (ja) *	2012-06-06	2016-03-22	フタバ産業株式会社	排気系部品
JP5843830B2 (ja) *	2013-09-18	2016-01-13	アイシン高丘株式会社	触媒ケース一体型排気マニホルド
JP6245123B2 (ja) *	2014-09-24	2017-12-13	マツダ株式会社	多気筒エンジンの排気装置
DE102016213386A1 (de)	2016-07-21	2018-01-25	Ford Global Technologies, Llc	Brennkraftmaschine mit Abgasturboaufladung und Verfahren zum Betreiben einer derartigen Brennkraftmaschine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE4444760A1 (de)	1994-12-16	1996-06-20	Eberspaecher J	Luftspaltisolierter Abgaskrümmer
US6247552B1 (en) *	1994-12-16	2001-06-19	J. Eberspächer Gmbh & Co.	Air gap-insulated exhaust manifold
US6343417B1 (en) *	1997-11-28	2002-02-05	Daimler-Benz Aktiengesellschaft	Process of manufacturing an air-gap-insulating exhaust elbow of a vehicle exhaust system
EP1229221A1 (fr) *	2001-02-01	2002-08-07	Benteler Automobiltechnik GmbH & Co. KG	Collecteur d'échappement avec bride de fixation fritté comprenant un conduit pour une recirculation des gaz d'échappement ou une injection d'air secondaire
EP1329607A2 (fr) *	2002-01-10	2003-07-23	Benteler Automobiltechnik GmbH & Co. KG	Dispositif pour guider les gaz d'échappement d'un moteur à combustion interne

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5331810A (en) *	1992-05-21	1994-07-26	Arvin Industries, Inc.	Low thermal capacitance exhaust system for an internal combustion engine
US5768890A (en) *	1993-11-12	1998-06-23	Benteler Automotive Corporation	Exhaust air rail manifold
US5572867A (en) *	1993-11-12	1996-11-12	Benteler Industries, Inc.	Exhaust air rail manifold
DE19923557B4 (de) *	1999-05-21	2006-07-13	Daimlerchrysler Ag	Gebauter luftspaltisolierter Abgaskrümmer einer Abgasanlage eines Kraftfahrzeuges und ein Verfahren zu dessen Herstellung

2004
- 2004-04-29 DE DE102004021196A patent/DE102004021196B4/de not_active Expired - Fee Related
2005
- 2005-03-02 EP EP05101601A patent/EP1591636B1/fr not_active Expired - Lifetime
- 2005-03-02 AT AT05101601T patent/ATE364779T1/de not_active IP Right Cessation
- 2005-03-02 DE DE502005000840T patent/DE502005000840D1/de not_active Expired - Lifetime
- 2005-04-27 US US11/116,027 patent/US7434390B2/en active Active

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE4444760A1 (de)	1994-12-16	1996-06-20	Eberspaecher J	Luftspaltisolierter Abgaskrümmer
US6247552B1 (en) *	1994-12-16	2001-06-19	J. Eberspächer Gmbh & Co.	Air gap-insulated exhaust manifold
US6343417B1 (en) *	1997-11-28	2002-02-05	Daimler-Benz Aktiengesellschaft	Process of manufacturing an air-gap-insulating exhaust elbow of a vehicle exhaust system
EP1229221A1 (fr) *	2001-02-01	2002-08-07	Benteler Automobiltechnik GmbH & Co. KG	Collecteur d'échappement avec bride de fixation fritté comprenant un conduit pour une recirculation des gaz d'échappement ou une injection d'air secondaire
EP1329607A2 (fr) *	2002-01-10	2003-07-23	Benteler Automobiltechnik GmbH & Co. KG	Dispositif pour guider les gaz d'échappement d'un moteur à combustion interne

Also Published As

Publication number	Publication date
EP1591636B1 (fr)	2007-06-13
ATE364779T1 (de)	2007-07-15
DE102004021196B4 (de)	2006-10-05
DE502005000840D1 (de)	2007-07-26
US20050241303A1 (en)	2005-11-03
US7434390B2 (en)	2008-10-14
DE102004021196A1 (de)	2005-11-24

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