EP0789137A3 - Exhaust pipe - Google Patents

Exhaust pipe Download PDF

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Publication number
EP0789137A3
EP0789137A3 EP97101684A EP97101684A EP0789137A3 EP 0789137 A3 EP0789137 A3 EP 0789137A3 EP 97101684 A EP97101684 A EP 97101684A EP 97101684 A EP97101684 A EP 97101684A EP 0789137 A3 EP0789137 A3 EP 0789137A3
Authority
EP
European Patent Office
Prior art keywords
pipe
exhaust pipe
compensator
strain
outer pipe
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
EP97101684A
Other languages
German (de)
French (fr)
Other versions
EP0789137B1 (en
EP0789137A2 (en
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/en
Publication of EP0789137A3 publication Critical patent/EP0789137A3/en
Application granted granted Critical
Publication of EP0789137B1 publication Critical patent/EP0789137B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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

Abstract

Die Erfindung betrifft eine Abgasleitung (1) mit einem in einem Außenrohr (3) unter Ausbildung eines ringförmigen Luftspalts (4) relativ verlagerbaren Innenrohr (2), wobei dem Außenrohr (3) ein Dehnungsausgleicher (9, 10) zugeordnet ist, der durch hydraulische balgartige Umformung der Wandung (11) des Außenrohrs (3) gebildet ist. Jeder Dehnungsausgleicher (9, 10) ist in einem Bereich (13, 14) angeordnet, in dem betriebstechnisch die Dehnungskompensation sinnvoll ist. Die im Betrieb auftretenden Längenänderungen können so wirksam kompensiert werden.

Figure 00000001
The invention relates to an exhaust pipe (1) with an inner pipe (2) which is relatively displaceable in an outer pipe (3) with the formation of an annular air gap (4), an expansion compensator (9, 10) being associated with the outer pipe (3) bellows-like deformation of the wall (11) of the outer tube (3) is formed. Each strain compensator (9, 10) is arranged in an area (13, 14) in which the strain compensation makes sense from an operational point of view. The length changes occurring during operation can be effectively compensated for.
Figure 00000001
EP97101684A 1996-02-07 1997-02-03 Exhaust pipe Expired - Lifetime EP0789137B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19604367 1996-02-07
DE1996104367 DE19604367C2 (en) 1996-02-07 1996-02-07 Exhaust pipe

Publications (3)

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

Family

ID=7784710

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97101684A Expired - Lifetime EP0789137B1 (en) 1996-02-07 1997-02-03 Exhaust pipe

Country Status (4)

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

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19642692C2 (en) * 1996-10-16 2000-06-29 Daimler Chrysler Ag Exhaust pipe
DE19816259A1 (en) * 1998-04-11 1999-10-14 Audi Ag Motor vehicle exhaust pipe of concentric inner and outer tubes
DE69900391T2 (en) * 1999-11-18 2002-07-11 Senior Flexonics Automotive Lt Flexible pipe with a finely woven braided lining
DE10059195B4 (en) 2000-11-29 2006-04-06 Benteler Automobiltechnik Gmbh Arrangement for the treatment of the exhaust gases passing from a gasoline engine with direct injection
DE102007048560A1 (en) * 2007-10-09 2009-04-23 Audi Ag Device for post-treatment of exhaust gases of a lean-running internal combustion engine
DE102007052243A1 (en) * 2007-11-02 2009-05-07 Daimler Ag Exhaust pipe component
CA2846921C (en) 2014-03-18 2017-04-25 G.B.D. Corp. Expansion compensator with multiple layers with differing stiffness
CA2846801C (en) 2014-03-17 2017-04-25 G.B.D. Corp. Expansion compensator with connectors
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 (en) * 2018-03-22 2018-08-28 力帆实业(集团)股份有限公司 The heat shield structure of gas exhaust piping

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3326260A1 (en) * 1983-07-21 1985-02-07 Witzenmann GmbH, Metallschlauch-Fabrik Pforzheim, 7530 Pforzheim Exhaust pipe
DE3925802A1 (en) * 1989-08-04 1991-02-07 Bayerische Motoren Werke Ag Exhaust manifold for use with turbo-charger - has set steel tubes fixed between cast flanges
US5189790A (en) * 1990-06-22 1993-03-02 Benteler Aktiengesellschaft Method of fabricating a double walled pipe elbow

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3714761A1 (en) * 1987-05-02 1988-11-17 Witzenmann Metallschlauchfab Exhaust line for internal combustion engines
US5363544A (en) * 1993-05-20 1994-11-15 Benteler Industries, Inc. Multi-stage dual wall hydroforming
DE19514020A1 (en) * 1995-04-13 1996-10-17 Daimler Benz Ag Exhaust manifold, in particular for an internal combustion engine in a motor vehicle, and method for its production
DE19546509A1 (en) * 1995-12-13 1997-06-19 Zeuna Staerker Kg Exhaust manifold and process for its manufacture

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3326260A1 (en) * 1983-07-21 1985-02-07 Witzenmann GmbH, Metallschlauch-Fabrik Pforzheim, 7530 Pforzheim Exhaust pipe
DE3925802A1 (en) * 1989-08-04 1991-02-07 Bayerische Motoren Werke Ag Exhaust manifold for use with turbo-charger - has set steel tubes fixed between cast flanges
US5189790A (en) * 1990-06-22 1993-03-02 Benteler Aktiengesellschaft Method of fabricating a double walled pipe elbow

Also Published As

Publication number Publication date
PT789137E (en) 2002-05-31
EP0789137B1 (en) 2002-01-16
EP0789137A2 (en) 1997-08-13
DE19604367A1 (en) 1997-08-14
DE19604367C2 (en) 2000-12-07
ES2166478T3 (en) 2002-04-16

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