FR2323944A1 - Flexible exhaust pipe for vehicle - is made from longitudinal corrugated strip sections formed into helix with leak-tight joints - Google Patents

Flexible exhaust pipe for vehicle - is made from longitudinal corrugated strip sections formed into helix with leak-tight joints

Info

Publication number
FR2323944A1
FR2323944A1 FR7527541A FR7527541A FR2323944A1 FR 2323944 A1 FR2323944 A1 FR 2323944A1 FR 7527541 A FR7527541 A FR 7527541A FR 7527541 A FR7527541 A FR 7527541A FR 2323944 A1 FR2323944 A1 FR 2323944A1
Authority
FR
France
Prior art keywords
exhaust pipe
helix
corrugations
leak
vehicle
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.)
Withdrawn
Application number
FR7527541A
Other languages
French (fr)
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.)
WESTAFLEX FRANCE
Original Assignee
WESTAFLEX FRANCE
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 WESTAFLEX FRANCE filed Critical WESTAFLEX FRANCE
Priority to FR7527541A priority Critical patent/FR2323944A1/en
Publication of FR2323944A1 publication Critical patent/FR2323944A1/en
Withdrawn legal-status Critical Current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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/12—Making tubes or metal hoses with helically arranged seams
    • B21C37/121—Making tubes or metal hoses with helically arranged seams with non-welded and non-soldered seams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/12—Making tubes or metal hoses with helically arranged seams
    • B21C37/124—Making tubes or metal hoses with helically arranged seams the tubes having a special shape, e.g. with corrugated wall, flexible tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/14—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics
    • F16L11/16—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics wound from profiled strips or bands

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Exhaust Silencers (AREA)
  • Joints Allowing Movement (AREA)

Abstract

The exhaust pipe of a motor vehicle is made from lengths of stainless steel strip in which longitudinal corrugations (2) have been formed. Three similar strips are placed one upon the other so that the corrugations (2) interlock. The triple strip is then formed into a helix with the edges folded over to form a continuous spiral joint (3). The corrugations are formed by passing the strip between two suitably shaped rollers. The corrugations provide a flexible exhaust pipe which absorbs engine vibration and accommodates thermal expansion. The folded joint (3) is formed so that it is leaktight.
FR7527541A 1975-09-09 1975-09-09 Flexible exhaust pipe for vehicle - is made from longitudinal corrugated strip sections formed into helix with leak-tight joints Withdrawn FR2323944A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7527541A FR2323944A1 (en) 1975-09-09 1975-09-09 Flexible exhaust pipe for vehicle - is made from longitudinal corrugated strip sections formed into helix with leak-tight joints

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7527541A FR2323944A1 (en) 1975-09-09 1975-09-09 Flexible exhaust pipe for vehicle - is made from longitudinal corrugated strip sections formed into helix with leak-tight joints

Publications (1)

Publication Number Publication Date
FR2323944A1 true FR2323944A1 (en) 1977-04-08

Family

ID=9159741

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7527541A Withdrawn FR2323944A1 (en) 1975-09-09 1975-09-09 Flexible exhaust pipe for vehicle - is made from longitudinal corrugated strip sections formed into helix with leak-tight joints

Country Status (1)

Country Link
FR (1) FR2323944A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2430560A1 (en) * 1978-07-04 1980-02-01 Westerbarkey Westaflex PROCESS FOR MANUFACTURING PROPELLERALLY WOUND TUBES AND TUBES OBTAINED
EP0038937A1 (en) * 1980-04-30 1981-11-04 Alcan Ohler GmbH Spiral seamed tube formed from a helically wound corrugated strip, and method for its manufacture
EP0561211A1 (en) * 1992-03-18 1993-09-22 Witzenmann GmbH Metallschlauch-Fabrik Pforzheim Hose with interlocking parts
EP0810354A1 (en) * 1996-05-29 1997-12-03 Calsonic Corporation Flexible pipe unit for use in exhaust pipe line of automotive engine
DE102009040072A1 (en) * 2009-09-04 2011-03-10 Westfalia Metallschlauchtechnik Gmbh & Co. Kg Insulating wrapped tube for use as decoupling element in exhaust system of passenger car, has tube profile including strip layers, where one of strip layers is formed as support layer, diffusion layer or insulating layers
CN102172666A (en) * 2011-03-23 2011-09-07 孙国春 Heavy-calibre spiral corrugated pipe machine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2430560A1 (en) * 1978-07-04 1980-02-01 Westerbarkey Westaflex PROCESS FOR MANUFACTURING PROPELLERALLY WOUND TUBES AND TUBES OBTAINED
EP0038937A1 (en) * 1980-04-30 1981-11-04 Alcan Ohler GmbH Spiral seamed tube formed from a helically wound corrugated strip, and method for its manufacture
EP0561211A1 (en) * 1992-03-18 1993-09-22 Witzenmann GmbH Metallschlauch-Fabrik Pforzheim Hose with interlocking parts
EP0810354A1 (en) * 1996-05-29 1997-12-03 Calsonic Corporation Flexible pipe unit for use in exhaust pipe line of automotive engine
US5967193A (en) * 1996-05-29 1999-10-19 Calsonic Corporation Flexible pipe unit for use in exhaust pipe line of automotive engine
DE102009040072A1 (en) * 2009-09-04 2011-03-10 Westfalia Metallschlauchtechnik Gmbh & Co. Kg Insulating wrapped tube for use as decoupling element in exhaust system of passenger car, has tube profile including strip layers, where one of strip layers is formed as support layer, diffusion layer or insulating layers
CN102172666A (en) * 2011-03-23 2011-09-07 孙国春 Heavy-calibre spiral corrugated pipe machine

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Legal Events

Date Code Title Description
ST Notification of lapse