EP1918544A1 - Enjoliveur d'extrémité de tuyan d'échappement - Google Patents

Enjoliveur d'extrémité de tuyan d'échappement Download PDF

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Publication number
EP1918544A1
EP1918544A1 EP07019594A EP07019594A EP1918544A1 EP 1918544 A1 EP1918544 A1 EP 1918544A1 EP 07019594 A EP07019594 A EP 07019594A EP 07019594 A EP07019594 A EP 07019594A EP 1918544 A1 EP1918544 A1 EP 1918544A1
Authority
EP
European Patent Office
Prior art keywords
tailpipe
stainless steel
layer
titanium
joining
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP07019594A
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German (de)
English (en)
Other versions
EP1918544B1 (fr
Inventor
Michael Paul
Michael Wessels
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.)
Dr Ing HCF Porsche AG
Original Assignee
Dr Ing HCF Porsche AG
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.)
Filing date
Publication date
Application filed by Dr Ing HCF Porsche AG filed Critical Dr Ing HCF Porsche AG
Publication of EP1918544A1 publication Critical patent/EP1918544A1/fr
Application granted granted Critical
Publication of EP1918544B1 publication Critical patent/EP1918544B1/fr
Ceased legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F01N13/082—Other arrangements or adaptations of exhaust conduits of tailpipe, e.g. with means for mixing air with exhaust for exhaust cooling, dilution or evacuation

Definitions

  • the patent application relates to a tailpipe of aluminum sheet and method for producing a tailpipe made of aluminum sheet.
  • the device it is proposed according to the device to use as the material for the tailpipe cover an aluminum sheet, which is plated on one side with stainless steel.
  • stainless steel may be used instead of stainless steel for the purposes of the invention.
  • the stainless steel or titanium-provided side of the sheet can be aligned so that it forms a visible surface or that it faces the exhaust gases.
  • the finding is based on the fact that aluminum sheet while sufficient against exhaust gases is corrosion resistant but is not sufficiently thermally stable for direct admission to exhaust gases, especially if the exhaust gases are passed directly to the aluminum sheet.
  • the stainless steel support or the titanium support serves for thermal insulation, because this reduces the heat input into the aluminum sheet.
  • the heat introduced into the aluminum sheet can be readily removed by the good thermal conductivity of this material.
  • the tailpipe baffle can be double-walled, i. consisting of an outer part and an inner part between which an insulating gap is formed. Outer part and inner part are usually connected together in an overlapping area. In this overlapping area aluminum should come to rest on aluminum.
  • the inner part can also be made of aluminum sheet without a stainless steel layer.
  • the outer part should always be provided on its outside with a stainless steel layer to give the tailpipe a high-quality visual impression.
  • adjoining the tailpipe trim is a pipe section which extends to a further upstream part of the exhaust system, such as an end muffler
  • this pipe section may preferably also be made of aluminum sheet. If this pipe section is subjected to high thermal loads, for example because it has bends where the exhaust gas flowing through it comes into direct contact with the wall, the pipe section can also be coated on the inside with stainless steel.
  • the pipe section preferably connects to the inner part of the tailpipe trim and is also connected by thermal joining. In this way, the pipe section can be carried out weight optimized. Since the connection between the pipe section and the further upstream part of the exhaust system is designed as a mechanical clamping connection, this further upstream part of the exhaust system may consist of a different material.
  • a tailpipe cover made of aluminum sheet the starting material, namely heat-resistant aluminum sheet, initially provided on one side with a layer of stainless steel, in particular by plating.
  • the starting material namely heat-resistant aluminum sheet
  • titanium may be used instead of stainless steel for the purposes of the invention.
  • the blanks for the tailpipe trim are cut from the starting material prepared in this way. In the areas of the blanks, which later come to rest on connection areas, the stainless steel layer is now removed again, preferably 1 to 5 mm beyond the connection area. Subsequently, the blanks are formed into parts of the tailpipe baffle, for example by bending, deep drawing, flanging and the like. Finally, the individual parts are assembled by thermal joining the tailpipe.
  • a joint seam on an aluminum sheet which is clad with stainless steel on one side
  • the join of each side must not cover the entire depth of the respective layer (aluminum sheet or stainless steel layer).
  • titanium may be used instead of stainless steel for the purposes of the invention.
  • the aluminum sheet is preferably joined by arc welding, in particular by MIG welding or TIG welding with additional material or without additional material.
  • the joining is preferably carried out by laser welding.
  • the method according to the third aspect is particularly suitable for the production of tailpipe trims from an aluminum sheet, which is clad with stainless steel on one side, wherein the side of the sheet provided with stainless steel is preferably aligned so that it forms a visible surface and / or that it faces the exhaust gases.
  • the join of each side should not essentially cover the entire depth of the respective layer (aluminum sheet or stainless steel layer). That is, the thermal joining is done for each layer independently of the other layer such that the different materials, aluminum and stainless steel, of the respective layer do not mix with each other.
  • the aluminum sheet is preferably joined by MIG welding with additional material. In the case of the stainless steel layer, the joining is preferably carried out by laser welding.
  • connection zone The different materials can lead to distortion in the connection zone.
  • adjoining the connection zone on both sides in each case an inner region, which receives an inlet zone or outlet zone of the weld.
  • the interior areas are then adjoined by outside areas that are not joined.
  • a gap is formed before the joining, while the outer areas are in abutment.
  • the outer areas thus form a spacer, which prevents the gap during the joining process, for example, by shrinkage processes closes.
  • the outer areas during the joining process by suitable means, such as. Clamps, be fixed. After the joining process, the inner and the outer regions are separated, so that the component is now in its final form.
  • an edge of the aluminum sheet is cleaned prior to welding by brushing or other mechanical measures.
  • the tailpipe 1 shown in Figure 1 is attached to the outlet of an exhaust system, not shown.
  • the tailpipe panel 1 consists of an outer part 2 and an inner part 3.
  • the outer part 2 is flanged end, so that a visible edge 4 is formed.
  • the visible edge 4 is adjoined by an inwardly projecting funnel 5, which projects into an enlarged end region 6 of the inner part 3.
  • Both the outer part 2 and the inner part 3 are made of heat-resistant aluminum sheet 7 as a support layer, which has been provided prior to processing with a layer 8 of stainless steel.
  • a layer 8 of stainless steel may be used instead of stainless steel for the purposes of the invention.
  • This layer 8 is applied, for example, by plating and makes up about 5 to 20% of the total thickness of the sheet. The sheet is processed so that the layer 8 comes to rest on the outside of the outer part 2 and on the inside of the inner part 3.
  • the outer part 2 is connected to the inner part 3 via a connecting region which extends between the funnel 5 and the widened end region 6 in the form of a weld seam 9 which is produced by arc welding, in particular by MIG welding or TIG welding with additional material or without additional material is.
  • a weld seam 9 which is produced by arc welding, in particular by MIG welding or TIG welding with additional material or without additional material is.
  • FIG. 1 Another weld 12 (see FIG. 1) is provided on the underside of the outer part 2.
  • This weld 12 may have been produced in the manner described above, in which case in the region of the weld 12 a region is formed which is not covered by a stainless steel layer 8 or titanium layer. If this is not desired, for example for optical reasons, the weld seam 12 may also be produced in the method illustrated in FIGS. 3 and 4.
  • FIG. 3 shows a detail of a sheet-metal blank 15 for the production of the outer part 2.
  • the sheet metal blank 15 is here already folded into a cylinder and has a joint area 16 which is formed between ends 11 of the sheet metal blank 15 and is to be connected by thermal joining.
  • On both sides of the joint area 16 of the strip 15 is still provided with lateral lugs 17 which protrude beyond the dashed lines shown end contour 18 of the strip 15.
  • the lugs 17 are flush against each other. Between the first areas 19 are the opposite ends 11 separated by a gap 20. This gap 20 extends, starting from second regions 21 which are formed in the lugs 17 following the outer regions 19, along the joint region 16.
  • the weld 12 begins to completely fill in one of the areas 21 without necessarily doing so.
  • the weld seam 12 passes through a further region 22 and ends in the opposite region 21. After the application of the weld seam 12, the lateral projections 17 are separated from the strip 15.
  • Fig. 4 shows the weld 12 in section.
  • the two, in particular heat-resistant, aluminum sheets 7 are connected to each other by a first weld 26, which was produced by arc welding, in particular by MIG welding or TIG welding with additional material or without additional material.
  • the weld 26 does not catch the aluminum layers 7 in their complete depth, but ends at a small distance from the stainless steel layers 8 or titanium layer.
  • To contamination of an edge 28 of the aluminum sheet 7 by particles of the stainless steel layer 8 or titanium layer when cutting the edge To prevent the edge 28 has been cleaned before welding by brushing or other mechanical measures.
  • Fig. 5 shows the tailpipe 1, which is provided here with a pipe section 30.
  • the pipe section 30 is thereby applied to the inner part 3 and is connected to the inner part in the manner described above by thermal joining.
  • the pipe section 30 is made of heat-resistant aluminum sheet 7, which is provided on the inside with a stainless steel layer 8 or titanium layer, depending on the thermal stress, as shown in Fig. 6.
  • the pipe section 30 is connected via a clamping connection with a not shown End silencer or another, also not shown pipe section, connected.
  • the rear muffler or the other pipe section may also consist of other material, for example. Steel, steel with aluminum support or stainless steel or titanium.
  • the invention relates to a tailpipe of aluminum sheet and method for producing a tailpipe of aluminum sheet.
  • a tailpipe trim which is weight reduced but at the same time still inexpensive to manufacture
  • the stainless steel or titanium-provided side of the sheet can be aligned so that it forms a visible surface or that it faces the exhaust gases.
  • it is proposed, for producing a tailpipe trim of aluminum sheet to provide the starting material, namely heat-resistant aluminum sheet, firstly on one side with a layer of stainless steel or titanium, in particular by plating.
  • the blanks for the tailpipe trim are cut from the starting material prepared in this way.
  • the stainless steel layer or the titanium layer is now removed again. Finally, the individual parts are assembled by thermal joining the tailpipe. In an alternative method, it is proposed to thermally add the coated aluminum sheet from both sides. In this case, the join of each side must not cover the entire depth of the respective layer (aluminum sheet or stainless steel layer or titanium layer).

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
EP20070019594 2006-11-03 2007-10-06 Enjoliveur d'extrémité de tuyan d'échappement Ceased EP1918544B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006051850A DE102006051850A1 (de) 2006-11-03 2006-11-03 Endrohrblende

Publications (2)

Publication Number Publication Date
EP1918544A1 true EP1918544A1 (fr) 2008-05-07
EP1918544B1 EP1918544B1 (fr) 2009-04-29

Family

ID=38658235

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20070019594 Ceased EP1918544B1 (fr) 2006-11-03 2007-10-06 Enjoliveur d'extrémité de tuyan d'échappement

Country Status (2)

Country Link
EP (1) EP1918544B1 (fr)
DE (2) DE102006051850A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10975743B1 (en) 2020-03-13 2021-04-13 Tenneco Automotive Operating Company Inc. Vehicle exhaust component
US11199116B2 (en) 2017-12-13 2021-12-14 Tenneco Automotive Operating Company Inc. Acoustically tuned muffler
US11268430B2 (en) 2019-01-17 2022-03-08 Tenneco Automotive Operating Company Inc. Diffusion surface alloyed metal exhaust component with welded edges
US11268429B2 (en) 2019-01-17 2022-03-08 Tenneco Automotive Operating Company Inc. Diffusion surface alloyed metal exhaust component with inwardly turned edges
US11365658B2 (en) 2017-10-05 2022-06-21 Tenneco Automotive Operating Company Inc. Acoustically tuned muffler
US11702969B2 (en) 2017-10-05 2023-07-18 Tenneco Automotive Operating Company Inc. Acoustically tuned muffler

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101725397B (zh) * 2008-10-21 2012-08-08 武汉楚天激光（集团）股份有限公司 一种汽车排气装饰尾管及其加工方法
DE102018112206A1 (de) * 2018-05-22 2019-11-28 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Endrohrblende für eine Abgasanlage eines Kraftfahrzeugs

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3690030C2 (de) * 1985-01-17 1998-01-22 Nisshin Steel Co Ltd Verwendung eines hochkorrosionsbeständigen durch Heißtauchüberziehen aluminisierten Stahlblechs
DE19914426A1 (de) * 1999-03-30 2000-10-12 Daimler Chrysler Ag Doppelwandiges Endrohr für ein Abgasrohr einer Abgasanlage eines Kraftfahrzeuges

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT355878B (de) * 1975-05-30 1980-03-25 Vmw Ranshofen Berndorf Ag Auspuffanlage
JPS5361537A (en) * 1976-11-16 1978-06-02 Toyota Motor Co Ltd Exhaust system device for engine and its prepabation
JPS6436915A (en) * 1987-07-31 1989-02-07 Kazuhiko Ida Exhaust pipe for internal combustion engine
DE3813860A1 (de) * 1988-04-23 1989-11-02 Gea Canzler Gmbh & Co Kg Verfahren zum aneinanderschweissen (fuegen) von teilen aus verbundwerkstoffen
US8394469B2 (en) * 2004-07-14 2013-03-12 Yamaha Hatsudoki Kabushiki Kaisha Exhaust pipe for internal combustion engine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3690030C2 (de) * 1985-01-17 1998-01-22 Nisshin Steel Co Ltd Verwendung eines hochkorrosionsbeständigen durch Heißtauchüberziehen aluminisierten Stahlblechs
DE19914426A1 (de) * 1999-03-30 2000-10-12 Daimler Chrysler Ag Doppelwandiges Endrohr für ein Abgasrohr einer Abgasanlage eines Kraftfahrzeuges

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11365658B2 (en) 2017-10-05 2022-06-21 Tenneco Automotive Operating Company Inc. Acoustically tuned muffler
US11702969B2 (en) 2017-10-05 2023-07-18 Tenneco Automotive Operating Company Inc. Acoustically tuned muffler
US11199116B2 (en) 2017-12-13 2021-12-14 Tenneco Automotive Operating Company Inc. Acoustically tuned muffler
US11268430B2 (en) 2019-01-17 2022-03-08 Tenneco Automotive Operating Company Inc. Diffusion surface alloyed metal exhaust component with welded edges
US11268429B2 (en) 2019-01-17 2022-03-08 Tenneco Automotive Operating Company Inc. Diffusion surface alloyed metal exhaust component with inwardly turned edges
US10975743B1 (en) 2020-03-13 2021-04-13 Tenneco Automotive Operating Company Inc. Vehicle exhaust component

Also Published As

Publication number Publication date
EP1918544B1 (fr) 2009-04-29
DE502007000666D1 (de) 2009-06-10
DE102006051850A1 (de) 2008-05-08

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