EP1319826A1 - Abgasrückführeinrichtung für Brennkraftmaschinen - Google Patents

Abgasrückführeinrichtung für Brennkraftmaschinen Download PDF

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Publication number
EP1319826A1
EP1319826A1 EP02293067A EP02293067A EP1319826A1 EP 1319826 A1 EP1319826 A1 EP 1319826A1 EP 02293067 A EP02293067 A EP 02293067A EP 02293067 A EP02293067 A EP 02293067A EP 1319826 A1 EP1319826 A1 EP 1319826A1
Authority
EP
European Patent Office
Prior art keywords
exhaust gas
internal combustion
combustion engine
recycling
gas recirculation
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Withdrawn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
EP02293067A
Other languages
English (en)
French (fr)
Inventor
Marcel Le Foll
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.)
Qualetude
Original Assignee
Qualetude
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 Qualetude filed Critical Qualetude
Publication of EP1319826A1 publication Critical patent/EP1319826A1/de
Withdrawn legal-status Critical Current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
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/12—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems characterised by means for attaching parts of an EGR system to each other or to engine parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • 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
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/12—Tubes being corrugated

Definitions

  • the present invention relates to the field of exhaust gas recycling devices for internal combustion engines.
  • the present invention relates more particularly to an exhaust gas recycling device of an internal combustion engine of the type comprising a tubular part for the passage of said gases and at each of its ends a connecting piece.
  • EGR exhaust gas recycling devices for internal combustion engines
  • These devices are used in particular in the automotive industry, to recycle the exhaust gases and use them for a second combustion, so that the polluting compounds such as nitrogen oxides (Nox), contained in these gases, are completely burned.
  • These devices are often made in one piece composed of a central tubular part and, at each end, of a connection cup.
  • the tubular part produces a succession of parts with a smooth external wall and with a corrugated external wall.
  • the prior art knows, for example the German utility model No. DE 295 16 861 which relates to an exhaust gas recycling device of an internal combustion engine of the type comprising two tubular parts (1) for the passage of said gases.
  • the device described and claimed consists of a housing (4) comprising a junction element (2) intended to allow an extraction to be formed on a straight pipe.
  • the device presented is an extraction element of the "T" type, making it possible to extract a part of the gases flowing in a pipe which is originally a straight pipe.
  • This illustrated recycling device therefore includes a connecting piece at its center.
  • the prior art also knows the European patent application No. EP 647 779 which relates to an exhaust gas recycling device of an internal combustion engine of the type also comprising two tubular parts (1, 2) for the passage of said gases.
  • the present invention intends to improve the devices of the prior art by proposing a device easier to manufacture and less expensive.
  • the present invention is of the type described above and it is remarkable, in its broadest sense, in that at least one connecting piece has at least one circular wave, for absorbing vibrations.
  • the documents of the prior art cited above do not disclose recycling devices comprising connection parts at their ends, but comprising a connection part at their center.
  • said tubular part has a smooth outer surface and does not include a wave for absorbing vibrations.
  • said one or more waves extend perpendicular to the axis X of said connecting piece and / or parallel to the axis X of said connecting piece.
  • the present invention also relates to a connection piece for a recycling device exhaust gas from an internal combustion engine according to the invention.
  • FIG. 1 An exhaust gas recycling device of an internal combustion engine of the prior art is illustrated in FIG. 1.
  • This device comprises a tubular part (2) for the passage of said gases and at each of its ends (3, 4) a connection piece (5, 6) for connection at one end, to the exhaust gas manifold (not illustrated) from the internal combustion engine and at another end to a valve.
  • the tubular part (2) has zones with planar surfaces (21), which are substantially cylindrical, and corrugated zones (22) having waves enabling the tubular part (2) to be bent, to absorb vibrations and to offer a certain margin as for the total dimension and the positioning dimensions of the exhaust gas recycling device.
  • the device (1) for recycling the exhaust gas of an internal combustion engine of the type according to the invention, illustrated in FIGS. 2 and 3, is characterized in that at least one connection piece (5, 6) has at least one circular wave (7), for absorbing vibrations.
  • the tubular part (2) may have a smooth exterior surface and not include a wave.
  • the tubular part (2) then forms a smooth tube, bent according to the needs of the gas path.
  • a connecting piece of the device, and preferably all the connecting pieces of the device preferably have a plurality of waves oriented in such a way that the bosses are perpendicular and / or parallel to the axis of said piece.
  • Figures 4 and 6 illustrate a variant of the invention in which the waves (7) extend perpendicular to the axis X of the connecting piece (5).
  • Figures 5 and 7 illustrate a variant of the invention in which a wave (7) extends parallel to the axis X of the connecting piece (6).
  • the end pieces forming the connecting pieces (5, 6) can be assembled to the tubular part (2), for example, by welding. This can easily be automated.
  • connection pieces can have different sizes, in order to allow them to be connected to different elements without requiring an expensive take-back operation or specific tools.
  • bending operations are no longer hampered by the shape of the end pieces or by the intermediate waves.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
EP02293067A 2001-12-11 2002-12-11 Abgasrückführeinrichtung für Brennkraftmaschinen Withdrawn EP1319826A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0115992 2001-12-11
FR0115992A FR2833312A1 (fr) 2001-12-11 2001-12-11 Dispositif de recyclage de gaz d'echappement pour moteur a combustion interne

Publications (1)

Publication Number Publication Date
EP1319826A1 true EP1319826A1 (de) 2003-06-18

Family

ID=8870336

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02293067A Withdrawn EP1319826A1 (de) 2001-12-11 2002-12-11 Abgasrückführeinrichtung für Brennkraftmaschinen

Country Status (3)

Country Link
US (1) US20030127078A1 (de)
EP (1) EP1319826A1 (de)
FR (1) FR2833312A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010149723A1 (de) * 2009-06-23 2010-12-29 Heinrich Gillet Gmbh Rohrförmiges akustisches dämmelement

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3151894A (en) * 1962-02-08 1964-10-06 Hanlon & Wilson Co Expansible connection capable of expanding and contracting radially and axially
FR2588916A1 (fr) * 1985-10-18 1987-04-24 Renault Dispositif d'accouplement flexible pour conduites d'echappement a temperatures elevees
JPH06101587A (ja) * 1992-09-22 1994-04-12 Toyota Motor Corp 内燃機関の吸気マニホールド
EP0647779A1 (de) 1993-10-08 1995-04-12 Regie Nationale Des Usines Renault S.A. Abgasrückführungsvorrichtung für eine Brennkraftmaschine
DE29516861U1 (de) 1995-10-25 1996-04-11 Witzenmann GmbH, Metallschlauch-Fabrik Pforzheim, 75175 Pforzheim Verbindungselement
JPH08338321A (ja) * 1995-06-09 1996-12-24 Usui Internatl Ind Co Ltd 内燃機関の排気ガス再循環用パイプ
EP0759502A1 (de) * 1995-08-16 1997-02-26 Benteler Ag Ausgleichsanordnung
DE29804765U1 (de) * 1998-03-17 1998-06-04 Heinrich Gillet Gmbh & Co Kg, 67480 Edenkoben Gehäuse für Schalldämpfer oder Katalysatoren

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2442342A1 (fr) * 1978-11-24 1980-06-20 Peugeot Dispositif perfectionne de reglage de la quantite de gaz d'echappement recycles sur un moteur diesel
DE3836723C1 (de) * 1988-10-28 1989-06-01 Daimler-Benz Aktiengesellschaft, 7000 Stuttgart, De
US5158061A (en) * 1991-11-29 1992-10-27 Ford Motor Company Exhaust gas recirculation supply tube for automotive engine
US5492104A (en) * 1994-11-03 1996-02-20 General Motors Corporation Exhaust gas recirculation for an internal combustion engine
US5609144A (en) * 1996-01-16 1997-03-11 Ford Motor Company Articulated exhaust gas recirculation supply tube for automotive engine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3151894A (en) * 1962-02-08 1964-10-06 Hanlon & Wilson Co Expansible connection capable of expanding and contracting radially and axially
FR2588916A1 (fr) * 1985-10-18 1987-04-24 Renault Dispositif d'accouplement flexible pour conduites d'echappement a temperatures elevees
JPH06101587A (ja) * 1992-09-22 1994-04-12 Toyota Motor Corp 内燃機関の吸気マニホールド
EP0647779A1 (de) 1993-10-08 1995-04-12 Regie Nationale Des Usines Renault S.A. Abgasrückführungsvorrichtung für eine Brennkraftmaschine
JPH08338321A (ja) * 1995-06-09 1996-12-24 Usui Internatl Ind Co Ltd 内燃機関の排気ガス再循環用パイプ
EP0759502A1 (de) * 1995-08-16 1997-02-26 Benteler Ag Ausgleichsanordnung
DE29516861U1 (de) 1995-10-25 1996-04-11 Witzenmann GmbH, Metallschlauch-Fabrik Pforzheim, 75175 Pforzheim Verbindungselement
DE29804765U1 (de) * 1998-03-17 1998-06-04 Heinrich Gillet Gmbh & Co Kg, 67480 Edenkoben Gehäuse für Schalldämpfer oder Katalysatoren

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 018, no. 374 (M - 1638) 14 July 1994 (1994-07-14) *
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 04 30 April 1997 (1997-04-30) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010149723A1 (de) * 2009-06-23 2010-12-29 Heinrich Gillet Gmbh Rohrförmiges akustisches dämmelement
US8443933B2 (en) 2009-06-23 2013-05-21 Tenneco Gmbh Tubular acoustic insulating element

Also Published As

Publication number Publication date
US20030127078A1 (en) 2003-07-10
FR2833312A1 (fr) 2003-06-13

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