EP1010888B1 - Conduit à gaz d'échappement pour soupape de recircualtion de gaz d'échappement - Google Patents

Conduit à gaz d'échappement pour soupape de recircualtion de gaz d'échappement Download PDF

Info

Publication number
EP1010888B1
EP1010888B1 EP99112015A EP99112015A EP1010888B1 EP 1010888 B1 EP1010888 B1 EP 1010888B1 EP 99112015 A EP99112015 A EP 99112015A EP 99112015 A EP99112015 A EP 99112015A EP 1010888 B1 EP1010888 B1 EP 1010888B1
Authority
EP
European Patent Office
Prior art keywords
exhaust
circulating pipe
gas circulating
exhaust gas
exhaust 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.)
Expired - Lifetime
Application number
EP99112015A
Other languages
German (de)
English (en)
Other versions
EP1010888A3 (fr
EP1010888A2 (fr
Inventor
Erwin Krimmer
Christian Lorenz
Andreas-Bernd Rosenbusch
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1010888A2 publication Critical patent/EP1010888A2/fr
Publication of EP1010888A3 publication Critical patent/EP1010888A3/fr
Application granted granted Critical
Publication of EP1010888B1 publication Critical patent/EP1010888B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • F02M26/11—Manufacture or assembly of EGR systems; Materials or coatings specially adapted for EGR systems
    • 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
    • F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
    • F02M26/21—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system with EGR valves located at or near the connection to the intake system
    • 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
    • F02M26/65—Constructional details of EGR valves
    • F02M26/66—Lift valves, e.g. poppet valves
    • F02M26/68—Closing members; Valve seats; Flow passages

Definitions

  • the invention relates to an exhaust pipe according to the Genus of the main claim.
  • DE 196 34 077 C1 is for a Exhaust admixing valve known an exhaust pipe.
  • This is made in one piece from sheet metal by deep drawing and initially has a pipe section for connecting to a Exhaust gas recirculation line from an exhaust system Combustion engine runs out, and one end that one Forms valve seat for a valve closing body, and a double-walled one protruding radially outwards Mounting flange.
  • the mounting flange is used for Attach the exhaust pipe to an inlet port a mixing chamber.
  • the inlet port on a housing of the Mixing chamber has an annular bead around the outside Edge area of the mounting flange is crimped to rigidly holding the exhaust pipe.
  • an exhaust gas admixing valve for admixing exhaust gas to fresher Combustion air through another connection piece can be introduced into the mixing chamber and together with admixed exhaust gas through a third connection piece can be diverted into an intake system Combustion engine.
  • Such an exhaust gas admixing valve will also referred to as an exhaust gas recirculation valve.
  • Figures 1 and 2 of this DE 196 34 077 C1 a two-part alternative solution from a first component deep-drawn from sheet metal, the forms the beginning and the mounting flange, and one second component made of sheet metal, which is attached to the Mounting flange is connected and at its free End forms the valve seat.
  • the connection is made by a ring seam, the so-called capacitor pulse welding process will be produced. That means, that one of the two components towards the other component directed a ring-like and wall-like elevation has, which is firmly pressed against the other component is, and that needed to produce the ring seam electrical energy supplied as an electrical pulse the electrical energy is the charge of a Capacitor.
  • the amount of energy can be Determine charging of the capacitor accurately enough, however faulty welds occur when from batch to Charge the deep drawability and the resilience of the used sheets is different. Because this Variables cause different geometries on both Components in the area of the ring seam to be attached. occasionally, this can also result in Vibration stress of the ring seam through the connected exhaust gas recirculation line along the Ring seam cracking takes place and the component fails.
  • EP 0 869 274 A1 is another Exhaust pipe in two-part construction made of sheet metal known in which the peculiarity is that the the component forming the valve seat has two cooling lugs, which extend to the mounting flange and thereby extract heat from it. The heat transfer takes place from the first component, which is the connection side, to the second component having the cooling fins indirectly a brazed joint or a weld.
  • the exhaust pipe according to the invention with the characterizing features of claim 1 has the advantage that deep-drawing processes and welding processes or Brazing processes are avoided and therefore also those Disadvantages that can result from these processes.
  • inventive design of Exhaust pipe as an extrusion for the Designer also given the advantage that Exhaust pipe in different wall thicknesses to give, for example, a break-proof attachment to reach the exhaust gas recirculation line to be connected.
  • Exhaust gas guide pipe for an exhaust gas admixing valve is in the Drawing shown and in the description below explained in more detail.
  • 1 shows a first Ready-to-install embodiment of the exhaust pipe in the cut state
  • Figure 2 shows a second Embodiment, partially shown
  • Figure 3 a partially shown mixing chamber with the built-in Exhaust pipe according to Figure 1 in functional Combination with a valve closing member
  • Figure 4 das Valve closing element in top view.
  • Exhaust gas pipe 2 has a beginning 3, an end 4 and in between a substantially radially outward protruding mounting flange 5, from which to the end 4th towards a tubular flare 6.
  • a substantially radially outward protruding mounting flange 5 from which to the end 4th towards a tubular flare 6.
  • the beginning 3 is one piece with the beginning 3 one Ring bead 7 provided, the one not described Cross section gives a fastener that on the Exhaust systems are well known.
  • the ring bead 7 has a sufficient of the mounting flange 5 axial distance 8, so that for a later around the annular bead 7th Fastening element, not shown, to be laid sufficient installation space is available.
  • the exhaust pipe 2 is made of light metal, for example an alloy containing aluminum, made as an extrusion, not shown Extrusion tools are designed such that the Exhaust pipe 2 in the axial direction from Extrusion tools is removable.
  • the annular bead 7 should therefore be in the finished state before illustrated beginning 3 a material volume 7a in the way provided that there is a substantially tubular Blank results from the upsetting and thereby Flow deformation of the annular bead 7 occurs.
  • an end face 9 of the end 4 or one Front 10 of one fixed on or in the end 4 Insert 11 form a valve seat.
  • the insert 11 is made of steel, for example the steel grade can be selected from which the Exhaust pipe according to the introduction to the description DE 196 34 077 C1 mentioned is deep-drawn. So it stands here the specialist is free to choose a steel alloy with Alloy components that prevent rust and Counteract abrasion. Because rust or abrasion would from Exhaust gas shipped into the internal combustion engine, too Wear.
  • the insert is 11 trained and stands in the manner of a thin-walled tube with its end face 10 over the end face 9 of the end 4 the exhaust pipe 2 emerges.
  • the insert 11 in one Extrusion tool is inserted and then material which the exhaust pipe 2 is extruded against and the insert 11 flowing around at least partially is formed.
  • the end face 9 of the end 4 of the Exhaust pipe 2 for example, the front Limitation of flowed material.
  • the insert 11 can also be retrofitted the end 4 can be installed by longitudinal pressing, both Components 4 and 11 have room temperature, or else through a so-called cross-press connection, which by heating the End 4 or / and cooling of the insert 11 before Insert into the end 4 without any significant longitudinal force can be generated.
  • An obvious variation would be to replace the tubular insert 11 against a tubular connection piece that comes in from the outside a way not shown on the end 4 of Exhaust pipe is shrunk.
  • FIG. 2 An embodiment for a positive fixation is shown in Figure 2. There is an insert 11a a diameter step 11b. An assigned Exhaust pipe 2a is therefore somewhat thicker than in first embodiment. A flange 12 from the material of the exhaust pipe 2a is against Shaped diameter step 11b.
  • the exhaust pipe 2 described in FIG. 1 is intended together with a closing body 15, the is shown in Figures 3 and 4, a Exhaust gas admixing valve 16 within a mixing chamber 17 form.
  • the partially shown mixing chamber 17 is located itself within a housing 18 that one in the Mixing chamber 17 has opening connecting piece 19.
  • the connecting piece 19 has one on its inlet side Scope shaped mounting bead 20. In axial Direction is the exhaust pipe 2 in the connector 19 inserted such that the connecting piece 19 a axial stop for the mounting flange 5 of the Exhaust pipe 2 forms.
  • the tubular in Figure 1 Flanging approach 6 shown is then total or only with parts of its circumference around the fastening bead 20 shaped, for example flanged, so that from the tubular flare 6 at least one flare 6a arises.
  • a fastening technique is used as stated by the in the introduction to the description DE 196 34 077 C1 is previously known.
  • the mounting flange 5 one in the Housing socket 19 immersed centering projection 21 on how he for example by a mounting flange according to the DE 43 25 169 C1 is known.
  • the closing body 15 is the Exhaust mixing valve 16 by means of a control rod 24 a control drive, not shown, both against the End face 10 and movable away from this.
  • a control drive is, for example, the prior art removable and therefore does not need to be described.
  • Closure body 15 on the control rod 24 has the Control rod 24 a spherical shoulder 25 and a pin 26 on. Associated with the pin 26 Valve closing body 15 a hole 27 and one of the crowned Shoulder 25 associated recess 28 which is spherically concave or can be hollow conical.
  • One made of spring steel manufactured leaf spring 29 with, for example, three Spring tongues 30 ensures a play-free system Indentation 28 on the crowned shoulder 25.
  • the leaf spring 29 is held by means of a rivet head 31.
  • the spring tongues 30 are formed through U-shaped die cuts in a circular base plate 32, for example, along its outer Limiting edge 33 against the closing body 15 pointing edge 32a as a swivel angle limiter for the Limitation of the pivoting possibility of the closing body 15 can have.
  • a pivoting option is in itself desirable because of hardly avoidable geometric deviations in the manufacture of Individual parts and later due to heat distortion from Items a sealing concern of Valve closing body 15 on the end face 10 with rigid Attachment to the control rod 24 is not expected.
  • the exhaust pipe 2 is installed in a vehicle Condition with exhaust gas supplied by an exhaust gas recirculation line 37, a flange 34 directed against the annular bead 7 Has.
  • arrow 35 Combustion air supplied, as long as the Sealing body 15 sealingly on the end face 10 is present, leaves the mixing chamber 17 at arrow 36.
  • Control-technical requirements which in one Trial operation using the relevant internal combustion engine are determined, is in the intended operation of the Internal combustion engine by means of the not shown Control drive of the valve closing body 15 more or less far from the end face 10 and thereby the exhaust gas supplied through the exhaust gas recirculation line 37 Throttled released into the default path Mixing chamber 17.
  • This way into the mixing chamber 17 Exhaust gas that has reached is together with arrow 35 incoming combustion air mixed and arrow 36 out of the mixing chamber 17 and to the internal combustion engine directed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Exhaust Silencers (AREA)

Claims (3)

  1. Tube de guidage des gaz d'échappement (2) pour une soupape de mélange des gaz d'échappement, comportant une chambre de mélange (17), le tube de guidage des gaz d'échappement (2) étant configuré en une seule pièce, et comportant également une entrée (3) qui se trouve à l'extérieur de la chambre de mélange (17), une sortie (11) formant un siège de soupape et dépassant dans la chambre de mélange (17), et entre ces deux parties, un collet de fixation (5) s'écartant pour l'essentiel radialement vers l'aval ainsi qu'un embout de bordure (6) tubulaire partant du collet de fixation (5), et dont l'extrémité est dirigée vers la sortie, et qui est conçu pour entourer un bourrelet de fixation (20) qui entoure un raccord d'admission (19) de la chambre de mélange (17),
    caractérisé en ce que
    le tube de guidage des gaz d'échappement (2) est configuré sous la forme d'une pièce extrudée en métal léger ou à base d'un alliage de métal léger.
  2. Tube de guidage des gaz d'échappement selon la revendication 1,
    caractérisé en ce que
    l'entrée (3) du tube de guidage des gaz d'échappement (2) est entourée par un renflement annulaire extrudé (7), une distance axiale (8) étant présente entre le renflement annulaire extrudé (7) et le collet de fixation (5).
  3. Tube de guidage des gaz d'échappement selon la revendication 1 ou 2,
    caractérisé en ce que
    dans ou au niveau de la sortie (4) du tube de guidage des gaz d'échappement (2) est disposé un insert (11) en acier ou à base d'un alliage d'acier comportant une face frontale (10), la face frontale (10) formant un siège de soupape pour un corps de fermeture de soupape (15).
EP99112015A 1998-12-16 1999-06-22 Conduit à gaz d'échappement pour soupape de recircualtion de gaz d'échappement Expired - Lifetime EP1010888B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19858057A DE19858057A1 (de) 1998-12-16 1998-12-16 Abgasführungsrohr für ein Abgaszumischventil
DE19858057 1998-12-16

Publications (3)

Publication Number Publication Date
EP1010888A2 EP1010888A2 (fr) 2000-06-21
EP1010888A3 EP1010888A3 (fr) 2000-10-18
EP1010888B1 true EP1010888B1 (fr) 2004-03-17

Family

ID=7891293

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99112015A Expired - Lifetime EP1010888B1 (fr) 1998-12-16 1999-06-22 Conduit à gaz d'échappement pour soupape de recircualtion de gaz d'échappement

Country Status (2)

Country Link
EP (1) EP1010888B1 (fr)
DE (2) DE19858057A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4227739C2 (de) * 1992-08-21 1998-04-30 Bayerische Motoren Werke Ag Zumischventil, insbesondere Abgasrückführ-Ventil einer Brennkraftmaschine
DE4325169C1 (de) 1993-07-27 1994-09-22 Bayerische Motoren Werke Ag Zumischventil, insbesondere Abgasrückführ-Ventil einer Brennkraftmaschine
DE19500565B4 (de) * 1995-01-11 2006-12-14 Robert Bosch Gmbh Ventilanordnung
DE19634077C1 (de) 1996-08-23 1998-04-02 Bosch Gmbh Robert Zumischventil, insbesondere Abgasrückführventil einer Brennkraftmaschine
DE19713578C2 (de) 1997-04-02 1999-05-06 Bosch Gmbh Robert Zumischventil, insbesondere Abgasrückführventil einer Brennkraftmaschine

Also Published As

Publication number Publication date
DE19858057A1 (de) 2000-06-21
DE59908871D1 (de) 2004-04-22
EP1010888A3 (fr) 2000-10-18
EP1010888A2 (fr) 2000-06-21

Similar Documents

Publication Publication Date Title
DE112006001508B4 (de) Verfahren zur Herstellung eines Kraftstoffeinspritzventils und Kraftstoffeinspritzventil
DE60117079T2 (de) Klappe für Schalldämpfer
EP2188513B1 (fr) Piston en deux parties pour moteur à combustion interne
EP0944769B1 (fr) Soupape d'injection de carburant
DE19808882B4 (de) Gemeinsame Schiene und Verfahren zum Herstellen derselben
EP0953108B1 (fr) Soupape a corps de siege de soupape et a disque perfore d'injection combines
DE112006001316B4 (de) Schweissen von pressgepassten kraftstoffeinspritzventilkomponenten
DE102008052552A1 (de) Turbinengehäuse und Verfahren zu seiner Herstellung
DE10322442A1 (de) Hochdruck-Kraftstoff-Einspritzrohr mit einem Verbindungs-Kopfteil
DE69808788T2 (de) Raumsparendes elektromagnetisch betätigbares abgasrückführungsventil
DE102005030457A1 (de) Kupplungssystem
DE10061015B4 (de) Hochdruckmetallrohr, das einen Verbindungskopf besitzt, und Verfahren zum Bilden des Verbindungskopfs ebenso wie eine Hülsenunterlegscheibe für den Verbindungskopf
EP1700058B1 (fr) Soupape de commande d'un fluide
DE19511479C2 (de) Verbindungsvorrichtung
DE69400499T2 (de) Vorrichtung zum dichten Verbinden eines Schlauches mit einem starren Rohrende
DE102017208324A1 (de) Wärmeübertrager
DE19712922A1 (de) Brennstoffeinspritzventil
DE102019120225A1 (de) Ventil und Vorrichtung zur Regelung von Drücken eines Strömungsmittels mit dem Ventil sowie Vorrichtung zur Sicherung des Ventils in dem Getriebebauteil
DE102009000895A1 (de) Kraftstoffeinspritzventil
EP1010888B1 (fr) Conduit à gaz d'échappement pour soupape de recircualtion de gaz d'échappement
EP2278235A2 (fr) Elément de liaison d'une plaque chauffante d'un corps de chauffe et corps de chauffe à plaques
DE202009008997U1 (de) Sondenstutzen
DE102016217535A1 (de) Verfahren zur Herstellung eines Fahrzeugbauteils
EP3559527B1 (fr) Vanne
DE69808787T2 (de) Kraftfahrzeugregelventil mit zweiteiligem magnetpolstück

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB IT

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20010418

AKX Designation fees paid

Free format text: DE FR GB IT

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 20040317

Ref country code: GB

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040317

Ref country code: FR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040317

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 59908871

Country of ref document: DE

Date of ref document: 20040422

Kind code of ref document: P

GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 20040317

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

EN Fr: translation not filed
26N No opposition filed

Effective date: 20041220

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20120822

Year of fee payment: 14

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 59908871

Country of ref document: DE

Effective date: 20140101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140101