EP2071171A1 - Dispositif à clapets pour un système de recirculation des gaz d'échappement - Google Patents

Dispositif à clapets pour un système de recirculation des gaz d'échappement Download PDF

Info

Publication number
EP2071171A1
EP2071171A1 EP08019972A EP08019972A EP2071171A1 EP 2071171 A1 EP2071171 A1 EP 2071171A1 EP 08019972 A EP08019972 A EP 08019972A EP 08019972 A EP08019972 A EP 08019972A EP 2071171 A1 EP2071171 A1 EP 2071171A1
Authority
EP
European Patent Office
Prior art keywords
flap
housing
wall element
shaft
flap device
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Withdrawn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
EP08019972A
Other languages
German (de)
English (en)
Inventor
Frank Wortmann
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.)
SMK Systeme Metall Kunststoff GmbH and Co KG
Original Assignee
SMK Systeme Metall Kunststoff GmbH and Co KG
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 SMK Systeme Metall Kunststoff GmbH and Co KG filed Critical SMK Systeme Metall Kunststoff GmbH and Co KG
Publication of EP2071171A1 publication Critical patent/EP2071171A1/fr
Withdrawn legal-status Critical Current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
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/23—Layout, e.g. schematics
    • F02M26/25—Layout, e.g. schematics with coolers having bypasses
    • F02M26/26—Layout, e.g. schematics with coolers having bypasses characterised by details of the bypass valve
    • 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
    • F02M26/65—Constructional details of EGR valves
    • F02M26/70—Flap valves; Rotary valves; Sliding valves; Resilient valves
    • 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
    • F02M26/72—Housings

Definitions

  • the invention relates to a flap device for an exhaust gas recirculation system of a motor vehicle having the features specified in the preamble of claim 1 and a method for producing such a flap device.
  • Known flap assemblies for exhaust gas recirculation systems are manufactured by casting a housing, piercing a wall of the housing and inserting a shaft through the borehole to which a flap is subsequently attached.
  • castings can only be produced with fairly large tolerances and reworking in the interior of the housing are hardly possible, the precise positioning of the shaft and the flap to be attached is difficult and can not always be achieved satisfactorily, so that a significant percentage of production rejects is.
  • the object of the invention is to show a way how to simplify the production of a flap device of the type mentioned for an exhaust gas recirculation system of a motor vehicle and can achieve a better sealing effect of the flap.
  • the housing has a sealing surface which cooperates with a transverse to the flap surface narrow side of the flap.
  • a larger cross-sectional area can flow through the housing than with sealing surfaces on which the flap rests with its flap surface.
  • Sealing surfaces, which cooperate with a transverse to the flap surface narrow side of the flap require low manufacturing tolerances, which can not be achieved with castings, in a flap device according to the invention by a post, which is easily possible because of the mounting hole, but can be easily achieved.
  • the wall element occluding the mounting opening of the housing preferably has one, preferably two, stops on which the flap strikes in its first or second position.
  • the positions of the flap can be specified precisely and with little effort, since attacks in the wall element, for example by embossing or deep drawing, can be designed inexpensively.
  • the stops can be generated in a single operation during the punching of the wall element.
  • the housing of the flap device is preferably made of stainless steel.
  • the wall element is a plate.
  • FIGS. 1 to 4 is shown in various views, a flap device 1 for an exhaust gas recirculation system of a motor vehicle.
  • FIGS. 5 to 9 are sectional views of the flap device 1 along in FIG. 4 drawn section lines AA, BB, CC and EE shown.
  • the flap device 1 has a cast housing 2 made of stainless steel, in which a flap 3 between a in FIG. 5 shown first position and one in FIG. 6 shown second position by means of a led out of the housing 2 shaft 4 is movable.
  • the housing 2 has flow openings 5, 6, 7 and 8, which are flowed through during operation of exhaust gas or air. In the first flap position, the flow openings 5, 6 are connected to the flow opening 7, in the second flap position to the flow opening 8.
  • the shaft 4 is passed through a wall element 10, which in particular in FIG. 3 can be seen.
  • the wall element 10 is inserted into a mounting opening of the housing 2, which is thereby closed.
  • FIG. 10 the housing 2 without the wall element 10, the shaft 4 and the flap 3 is shown, so that the mounting hole 11 is clearly visible.
  • the wall opening element 10 closing the mounting opening 11 can be produced inexpensively and with high precision as a stamped part made of sheet metal.
  • the mounting opening 11 closing wall element 10 is a plate. In principle, however, it can also have a curved or arched shape.
  • the wall element 10 has on its inside two stops 12, 13, which are formed in the illustrated embodiment as embossed or deep-drawn projections.
  • the flap 3 strikes the first Projection 12 on.
  • the flap 3 abuts against the second stop 13.
  • the housing 2 has on its inside a V-shaped sealing surface 14 which cooperates with a transverse to the flap surface narrow side of the flap 3 together, as in FIG. 7 can be seen.
  • the flap 3 of the illustrated flap device 1 thus seals radially.
  • the sealing surface 14 is formed as an elevation on the inside of the housing 2 and preferably arranged opposite the wall opening 10 closing the mounting opening 11.
  • the housing 2 is poured during manufacture in the region of the sealing surface 14 with excess. Before inserting a shaft assembly formed from the wall element 10, the shaft 4 and the flap 3, the sealing surface 14 is processed by removing material, preferably by milling. By the in FIG. 10 illustrated mounting opening 11, the interior of the housing 2 is accessible for editing the sealing surface for a milling or grinding tool.
  • the mounting opening 11 has a stepped support surface 15 for the wall element 10.
  • a support surface 15 can be made for example by milling with little effort and great precision.
  • the stepped bearing surface 15 causes the mounting hole 11 of the housing 2 to widen outwardly so that a wall member 10 inserted to close the mounting hole 11 can not fall inwardly before being integrally bonded to the housing 2, preferably by welding.

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)
EP08019972A 2007-12-10 2008-11-15 Dispositif à clapets pour un système de recirculation des gaz d'échappement Withdrawn EP2071171A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007059751A DE102007059751A1 (de) 2007-12-10 2007-12-10 Klappeneinrichtung für Abgasrückführsystem

Publications (1)

Publication Number Publication Date
EP2071171A1 true EP2071171A1 (fr) 2009-06-17

Family

ID=40451140

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08019972A Withdrawn EP2071171A1 (fr) 2007-12-10 2008-11-15 Dispositif à clapets pour un système de recirculation des gaz d'échappement

Country Status (2)

Country Link
EP (1) EP2071171A1 (fr)
DE (1) DE102007059751A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030192606A1 (en) * 2002-04-15 2003-10-16 Visteon Global Technologies, Inc. Switch valve for the exhaust gases of an internal combustion engine
EP1510739A1 (fr) * 2003-08-28 2005-03-02 Gustav Wahler GmbH u. Co.KG Soupape d'échappement
WO2006084867A1 (fr) * 2005-02-08 2006-08-17 Dayco Ensa, S.L. Vanne de derivation
WO2006099965A1 (fr) * 2005-03-19 2006-09-28 Daimlerchrysler Ag Dispositif d'aspiration d'air pour un moteur a combustion interne comprenant un dispositif a clapet de derivation
EP1748179A1 (fr) * 2005-07-29 2007-01-31 Valeo Termico S.A. Système pour le contrôle de la circulation de gaz, en particulier des gaz d'échappement d'un moteur

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030192606A1 (en) * 2002-04-15 2003-10-16 Visteon Global Technologies, Inc. Switch valve for the exhaust gases of an internal combustion engine
EP1510739A1 (fr) * 2003-08-28 2005-03-02 Gustav Wahler GmbH u. Co.KG Soupape d'échappement
WO2006084867A1 (fr) * 2005-02-08 2006-08-17 Dayco Ensa, S.L. Vanne de derivation
WO2006099965A1 (fr) * 2005-03-19 2006-09-28 Daimlerchrysler Ag Dispositif d'aspiration d'air pour un moteur a combustion interne comprenant un dispositif a clapet de derivation
EP1748179A1 (fr) * 2005-07-29 2007-01-31 Valeo Termico S.A. Système pour le contrôle de la circulation de gaz, en particulier des gaz d'échappement d'un moteur

Also Published As

Publication number Publication date
DE102007059751A1 (de) 2009-06-25

Similar Documents

Publication Publication Date Title
DE102011117856A1 (de) Mehrteilige, gefügte Rotoren in hydraulischen Nockenwellenverstellern mit Fügedichtprofilen und Verfahren zur Herstellung der Rotoren
EP2929210B1 (fr) Amortisseur pour véhicule muni d'une bride de raccordement à un tube de module externe
DE102014110849A1 (de) Klappeneinrichtung
DE102008060091A1 (de) Solenoidanordnung mit geschlitztem Stator
EP2588826A2 (fr) Échangeur de chaleur
DE102015200535A1 (de) Mittenzentrierter Nockenwellenversteller mit Rückschlagventilvarianten
EP3781380B1 (fr) Module électrique ou électronique ainsi que procédé de production d'une pièce électrique ou électronique
EP2071171A1 (fr) Dispositif à clapets pour un système de recirculation des gaz d'échappement
EP2627911B1 (fr) Procédé de fabrication d'un dispositif hydraulique
DE10327481A1 (de) Gehäuseloser Plattenwärmetauscher mit Sammelkasten
DE102005025735B3 (de) Schweißverbund
DE19758003B4 (de) Widerlager aus Blech zur Anordnung an einem Träger und Verfahren zur Herstellung
DE102008027242B4 (de) Verfahren zum Montieren einer Klappe in einem Gehäuse
DE102009045844A1 (de) Elektromaschine
DE102008061167A1 (de) Verbundbauteil sowie Verfahren und Vorrichtung zu dessen Herstellung
EP2933522B1 (fr) Étrier de frein à disque et dispositif d'actionnement d'un tel étrier de frein à disque
DE102013110761A1 (de) Verfahren zum Herstellen eines metallischen Verbundbauteils und metallisches Verbundbauteil
DE10250342A1 (de) Fügeverfahren und Fügevorrichtung zum Verbinden von überlappend angeordneten Fügeteilen
DE102018106335B4 (de) Verfahren für die Herstellung eines Verbundbauteils aus Faserverbundmaterial und einem Metallbauteil für ein Fahrzeug sowie Verschlusseinsatz
DE102010041876A1 (de) Verfahren zur Fertigung eines Gussteils mit zumindest einem Fluid führenden Kanal
EP3626948B1 (fr) Soupape ainsi que procédé de fabrication d'une soupape
EP2176940B1 (fr) Stator pour moteur électrique
EP3048265B1 (fr) Procédé de fabrication d'une géométrie variable de turbine
DE102019107596A1 (de) Kugelgewindetrieb und Verfahren zur Herstellung einer Gewindemutter
DE10033465B4 (de) Turbinenleitrad und Verfahren zur Herstellung eines Turbinenleitrades

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: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA MK RS

17P Request for examination filed

Effective date: 20091019

17Q First examination report despatched

Effective date: 20091117

AKX Designation fees paid

Designated state(s): CZ DE FR HU PL RO

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20100330