ATE239863T1 - FLEXIBLE, CORRUPTED PIPE FOR UNCOUPLING VEHICLE ENGINE EXHAUST LINES - Google Patents

FLEXIBLE, CORRUPTED PIPE FOR UNCOUPLING VEHICLE ENGINE EXHAUST LINES

Info

Publication number
ATE239863T1
ATE239863T1 AT98112403T AT98112403T ATE239863T1 AT E239863 T1 ATE239863 T1 AT E239863T1 AT 98112403 T AT98112403 T AT 98112403T AT 98112403 T AT98112403 T AT 98112403T AT E239863 T1 ATE239863 T1 AT E239863T1
Authority
AT
Austria
Prior art keywords
undulations
conduit
flexible
tubular element
engine exhaust
Prior art date
Application number
AT98112403T
Other languages
German (de)
Inventor
Gianluigi Capra
Tony Ballone
Barbara Caricchi
Original Assignee
Flexider S R L
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 Flexider S R L filed Critical Flexider S R L
Application granted granted Critical
Publication of ATE239863T1 publication Critical patent/ATE239863T1/en

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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Catalysts (AREA)
  • Joints Allowing Movement (AREA)

Abstract

A flexible undulated-walled decoupling conduit (1) for a vehicle engine exhaust system; the conduit being defined by a flexible continuous-walled tubular element (2), and being made of stainless steel sheet (5), which is folded to form a closed conduit and deformed axially to form a number of circular undulations (7) enabling the conduit to flex; the tubular element (2) being covered externally or internally with a woven stainless steel wire sheath (11, 17); the tubular element, according to the invention, having, at each end (3, 4), a group of at least three undulations (20, 21, 22) of increasing inside and/or outside diameters (D1, D2, D3) so as to decrease gradually in height towards the respective end of the tubular element; the undulations (20, 21, 22) in each group being separated by spacings (p1, p2, p3) differing from one another and from the constant spacing of the intermediate undulations (6a); and the undulations so formed conferring greater rigidity to the ends of the flexible conduit in the event of lateral bending stress, so as to achieve substantially uniform stress along the meridians of the undulations (7). <IMAGE>
AT98112403T 1997-07-04 1998-07-03 FLEXIBLE, CORRUPTED PIPE FOR UNCOUPLING VEHICLE ENGINE EXHAUST LINES ATE239863T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT97TO000595A IT1293413B1 (en) 1997-07-04 1997-07-04 CORRUGATED WALL DUCT WITH CONTROLLED FLEXIBILITY FOR DECOUPLING MOTOR VEHICLE ENGINE EXHAUST PIPES.

Publications (1)

Publication Number Publication Date
ATE239863T1 true ATE239863T1 (en) 2003-05-15

Family

ID=11415838

Family Applications (1)

Application Number Title Priority Date Filing Date
AT98112403T ATE239863T1 (en) 1997-07-04 1998-07-03 FLEXIBLE, CORRUPTED PIPE FOR UNCOUPLING VEHICLE ENGINE EXHAUST LINES

Country Status (5)

Country Link
EP (1) EP0889210B1 (en)
AT (1) ATE239863T1 (en)
DE (2) DE69814243T2 (en)
ES (1) ES2127713T3 (en)
IT (1) IT1293413B1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20312251U1 (en) * 2003-08-05 2004-01-08 Witzenmann Gmbh Flexible pipe element
DE202006009275U1 (en) * 2006-06-16 2007-10-31 Witzenmann Gmbh Flexible duct element for exhaust systems
FR2982905A1 (en) * 2011-11-21 2013-05-24 Peugeot Citroen Automobiles Sa Flexible device for acoustic decoupling of exhaust line of diesel engine of e.g. buses to reduce nitrogen oxide emissions from exhaust gas, has tube section consisting of annular radial waves whose geometrical dimension is not constant
KR102869049B1 (en) 2020-10-07 2025-10-10 현대자동차 주식회사 Recirculation pipe and engine system including the same

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE864143A (en) 1976-12-04 1978-06-16 Pforzheim Metallschlauch FLEXIBLE TUBING ELEMENT ESPECIALLY FOR AN EXHAUST CIRCUIT
GB1575892A (en) * 1978-02-27 1980-10-01 Pforzheim Metallschlauch Flexible pipe for exhaus gas pipes of internal combustion engines
JPS59145321A (en) 1983-02-04 1984-08-20 Toyota Motor Corp Flexible exhaust pipe
DE3424704A1 (en) * 1984-07-05 1986-02-06 Gustav Wahler Gmbh U. Co, 7300 Esslingen Corrugated tube
US4867269A (en) * 1987-06-30 1989-09-19 Titeflex Corporation Tuned self-damping convoluted conduit
DE3866070D1 (en) * 1987-09-01 1991-12-12 Iwk Regler Und Kompensatoren Gmbh, 7513 Stutensee, De
JPH03105012A (en) * 1989-09-14 1991-05-01 Sango:Kk Flexible tube for exhaust pipe
IT1250556B (en) * 1991-12-24 1995-04-20 Flexider Spa FLEXIBLE ANTIVIBRATION DUCT WITH FLAT CROSS SECTION.
JP3309940B2 (en) * 1994-10-21 2002-07-29 カルソニックカンセイ株式会社 Flexible Tube
JPH08210129A (en) * 1995-02-07 1996-08-20 Toyota Motor Corp Spherical joint
FR2731044B1 (en) * 1995-02-24 1997-04-04 Renault EXHAUST DEVICE FOR INTERNAL COMBUSTION ENGINE
US5806899A (en) 1995-10-23 1998-09-15 Calsonic Corporation Flexible connection tube for automotive exhaust system
IT1281402B1 (en) * 1995-12-12 1998-02-18 Flexider Spa FLEXIBLE CONDUIT WITH DOUBLE WAVY WALL FOR DECOUPLING MOTOR VEHICLE EXHAUST PIPES.

Also Published As

Publication number Publication date
ES2127713T3 (en) 2003-11-01
EP0889210B1 (en) 2003-05-07
DE889210T1 (en) 1999-08-19
ITTO970595A1 (en) 1999-01-04
DE69814243D1 (en) 2003-06-12
DE69814243T2 (en) 2004-03-25
EP0889210A1 (en) 1999-01-07
IT1293413B1 (en) 1999-03-01
ES2127713T1 (en) 1999-05-01

Similar Documents

Publication Publication Date Title
KR970021889A (en) Flexible connection tube for automotive exhaust system
US5656011A (en) Endoscope tube system
EP0422887B1 (en) Bending device
CA2409763A1 (en) Flexible tube comprising a variable stiffness bellows
ATE281249T1 (en) STRIPPER FOR TUBES
EP0657683B1 (en) Flexible vibration-damping joint, particularly for vehicle exhaust pipes
US4920746A (en) Exhaust system for combustion engines
ATE239863T1 (en) FLEXIBLE, CORRUPTED PIPE FOR UNCOUPLING VEHICLE ENGINE EXHAUST LINES
DE69601821D1 (en) Pipe bundle for steam condenser
DE69513796D1 (en) Connection device for corrugated pipes
ES2195106T3 (en) A FLEXIBLE WAVED WALL TUBE TO UNCOUNTER EXHAUST PIPES FROM MOTOR VEHICLES.
JPH0373125A (en) Curved part for curvature operating device
ATE547661T1 (en) FLEXIBLE TUBULAR DEVICE, FOR EXAMPLE A BELLOWS
ATE208664T1 (en) UNIVERSAL BENDING DEVICE FOR PIPES
EP0750100B1 (en) Flexible pipe component for exhaust gas conduits of vehicles
FR2683885B1 (en) CLIP FOR FIXING TUBES OR CABLES TO A RIGID SUPPORT IN THE FORM OF A WIRE OR TUBE.
JPWO2021229792A5 (en)
ATE307968T1 (en) FLEXIBLE LINE ELEMENT FOR EXHAUST LINES
JPH08326983A (en) Pipe heater
ES2026859T3 (en) HOSE CLAMP.
PL354340A1 (en) Flexible gas tube
DE69615124D1 (en) Fuel bundle support structure which selectively uses the flow box and a water pipe and methods of lifting the fuel bundle
JPS586856Y2 (en) Piping support device inside telescopic boom
SU989223A1 (en) High-pressure flexible hose
JPH0237349Y2 (en)

Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification

Ref document number: 0889210

Country of ref document: EP

REN Ceased due to non-payment of the annual fee