EP0789137B1 - Abgasleitung - Google Patents

Abgasleitung Download PDF

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Publication number
EP0789137B1
EP0789137B1 EP97101684A EP97101684A EP0789137B1 EP 0789137 B1 EP0789137 B1 EP 0789137B1 EP 97101684 A EP97101684 A EP 97101684A EP 97101684 A EP97101684 A EP 97101684A EP 0789137 B1 EP0789137 B1 EP 0789137B1
Authority
EP
European Patent Office
Prior art keywords
outer tube
expansion
exhaust pipe
exhaust
compensators
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.)
Expired - Lifetime
Application number
EP97101684A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0789137A2 (de
EP0789137A3 (de
Inventor
Jürgen KLEINSCHMIDT
Andreas Fritz
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.)
Benteler Deustchland GmbH
Original Assignee
Benteler Deustchland GmbH
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 Benteler Deustchland GmbH filed Critical Benteler Deustchland GmbH
Publication of EP0789137A2 publication Critical patent/EP0789137A2/de
Publication of EP0789137A3 publication Critical patent/EP0789137A3/de
Application granted granted Critical
Publication of EP0789137B1 publication Critical patent/EP0789137B1/de
Anticipated expiration legal-status Critical
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 ; 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
    • F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
    • F01N13/1811—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body with means permitting relative movement, e.g. compensation of thermal expansion or vibration
    • F01N13/1816—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body with means permitting relative movement, e.g. compensation of thermal expansion or vibration the pipe sections being joined together by flexible tubular elements only, e.g. using bellows or strip-wound pipes
    • 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
    • F01N13/14—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
    • 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
    • F01N13/1883—Construction facilitating manufacture, assembly, or disassembly manufactured by hydroforming

Definitions

  • the invention relates to an exhaust pipe according to the features in the preamble of claim 1.
  • Air gap insulated exhaust pipes allow decoupling of the gas-carrying inner tube from which the outer and inner tube absorbing internal forces. External forces result among other things as a result of vibrations. at The internal forces include thermal expansion of the outer tube. There are compensation arrangements for this required.
  • an expansion compensator is part of the State of the art, in which two pipe sections through a flexible bridge link in the form of a corrugated tube with each other are connected.
  • the cylindrical ends of the Corrugated pipe are the circumference of the ends of the pipe sections welded.
  • the invention is based on the prior art Task based on an improved in functionality Exhaust pipe to create that at simple and lightweight construction insensitive to operational Tensions is.
  • the number of individual compensation beads in an expansion compensator is tailored to the respective application. Therefore, several can be in one exhaust pipe Strain compensators exist that have a different Number of compensation beads. Also can the height or the diameter of the individual compensation beads in a strain compensator or by strain compensator different to strain compensators his. The configuration and positioning of the expansion compensators is made so that a reduction the component stresses is reached.
  • the hydraulic hydroforming enables one cost-effective economical production of the exhaust pipe, especially under the aspect that the Exhaust pipes are mass-produced items that are mass-produced become. Hydraulic forming is also possible high dimensional accuracy with the smallest manufacturing tolerances.
  • One or more expansion compensators can be installed in an exhaust pipe be provided. Basically, it is possible first of all to produce the expansion compensators in the outer tube, then the inner tube into the outer tube to bring and fix. This can be followed by a bending process connect to the created exhaust pipe to transform as needed. However, the forming is expedient the wall of the outer tube after the inner tube has been fitted and if necessary the bending process has been carried out.
  • a particularly advantageous embodiment of the invention Basic idea is in the features of the claim 2 to see.
  • the insulating annular air gap formed by hydraulic expansion of the outer tube This is usually done by first a straight inner tube and a straight outer tube into each other pushed as well as together at their end areas get connected. They are then bent together, being a mandrel is guided in the inner tube.
  • the features of claim 3 result in a high level Stability of the exhaust pipe because of the expansion compensators each be positioned in an area where guaranteed is that the operationally occurring Tensions are reduced.
  • the positioning is on the respective version of the exhaust pipe is component-specific Voted. The thermal expansion occurring during operation and forces from load change excitation become effective compensated.
  • Figure 1 is a perspective representation a section of a double-walled elbow 1 shown.
  • the inner pipe 2 is in its radial position in the outer tube 3 fixed.
  • the strain compensators 9, 10 are by hydraulic bellows-like deformation the wall 11 of the outer tube 3 is formed. hereby 11 balance shafts 12 are created in the wall, which the thermally induced changes in length elastic take up.
  • the balance shafts 12 are in the areas 13, 14 provided in which in operation with the largest Thermal stress is to be expected or where it is used most effective voltage equalization achieved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Exhaust Silencers (AREA)
  • Joints Allowing Movement (AREA)
  • Fluid-Pressure Circuits (AREA)
EP97101684A 1996-02-07 1997-02-03 Abgasleitung Expired - Lifetime EP0789137B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19604367 1996-02-07
DE1996104367 DE19604367C2 (de) 1996-02-07 1996-02-07 Abgasleitung

Publications (3)

Publication Number Publication Date
EP0789137A2 EP0789137A2 (de) 1997-08-13
EP0789137A3 EP0789137A3 (de) 1998-04-01
EP0789137B1 true EP0789137B1 (de) 2002-01-16

Family

ID=7784710

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97101684A Expired - Lifetime EP0789137B1 (de) 1996-02-07 1997-02-03 Abgasleitung

Country Status (4)

Country Link
EP (1) EP0789137B1 (pt)
DE (1) DE19604367C2 (pt)
ES (1) ES2166478T3 (pt)
PT (1) PT789137E (pt)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9927053B2 (en) 2014-03-17 2018-03-27 Omachron Intellectual Property Inc. Expansion compensator with connectors

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19642692C2 (de) * 1996-10-16 2000-06-29 Daimler Chrysler Ag Abgasrohr
DE19816259A1 (de) * 1998-04-11 1999-10-14 Audi Ag Abgasrohr für eine Brennkraftmaschine
DE69900391T2 (de) * 1999-11-18 2002-07-11 Senior Flexonics Automotive Lt Flexibles Rohr mit feinmaschig geflochtener Auskleidung
DE10059195B4 (de) * 2000-11-29 2006-04-06 Benteler Automobiltechnik Gmbh Anordnung zur Behandlung der aus einem Ottomotor mit Direkteinspritzung tretenden Abgase
DE102007048560A1 (de) * 2007-10-09 2009-04-23 Audi Ag Vorrichtung zum Nachbehandeln von Abgasen einer magerlauffähigen Brennkraftmaschine
DE102007052243A1 (de) * 2007-11-02 2009-05-07 Daimler Ag Abgasleitungsbauteil
CA2846921C (en) 2014-03-18 2017-04-25 G.B.D. Corp. Expansion compensator with multiple layers with differing stiffness
US10046510B2 (en) 2014-03-25 2018-08-14 Omachron Intellectual Property Inc. Methods of manufacturing an expansion compensator
CA2855326A1 (en) 2014-06-26 2015-12-26 G.B.D. Corp. Method of installing an expansion compensator
CN108457735A (zh) * 2018-03-22 2018-08-28 力帆实业(集团)股份有限公司 排气管路的隔热罩结构

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0737803A1 (de) * 1995-04-13 1996-10-16 Mercedes-Benz Ag Abgassammelrohr, insbesondere für eine Brennkraftmaschine in einem Kraftfahrzeug, und Verfahren zu dessen Herstellung
EP0779418A1 (de) * 1995-12-13 1997-06-18 Zeuna-Stärker Gmbh & Co Kg Abgaskrümmer sowie Verfahren zu seiner Herstellung

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3326260A1 (de) * 1983-07-21 1985-02-07 Witzenmann GmbH, Metallschlauch-Fabrik Pforzheim, 7530 Pforzheim Auspuffleitung
DE3714761A1 (de) * 1987-05-02 1988-11-17 Witzenmann Metallschlauchfab Abgasleitung fuer verbrennungsmotoren
DE3925802A1 (de) * 1989-08-04 1991-02-07 Bayerische Motoren Werke Ag Abgaskruemmer
DE4019899C1 (pt) * 1990-06-22 1991-12-19 Benteler Ag, 4790 Paderborn, De
US5363544A (en) * 1993-05-20 1994-11-15 Benteler Industries, Inc. Multi-stage dual wall hydroforming

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0737803A1 (de) * 1995-04-13 1996-10-16 Mercedes-Benz Ag Abgassammelrohr, insbesondere für eine Brennkraftmaschine in einem Kraftfahrzeug, und Verfahren zu dessen Herstellung
EP0779418A1 (de) * 1995-12-13 1997-06-18 Zeuna-Stärker Gmbh & Co Kg Abgaskrümmer sowie Verfahren zu seiner Herstellung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9927053B2 (en) 2014-03-17 2018-03-27 Omachron Intellectual Property Inc. Expansion compensator with connectors

Also Published As

Publication number Publication date
EP0789137A2 (de) 1997-08-13
ES2166478T3 (es) 2002-04-16
PT789137E (pt) 2002-05-31
DE19604367A1 (de) 1997-08-14
EP0789137A3 (de) 1998-04-01
DE19604367C2 (de) 2000-12-07

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