EP2342447B1 - Agr-ventil mit einer trägerplatte - Google Patents

Agr-ventil mit einer trägerplatte Download PDF

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Publication number
EP2342447B1
EP2342447B1 EP09763827A EP09763827A EP2342447B1 EP 2342447 B1 EP2342447 B1 EP 2342447B1 EP 09763827 A EP09763827 A EP 09763827A EP 09763827 A EP09763827 A EP 09763827A EP 2342447 B1 EP2342447 B1 EP 2342447B1
Authority
EP
European Patent Office
Prior art keywords
valve
support plate
valve according
motor
pinion
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.)
Not-in-force
Application number
EP09763827A
Other languages
English (en)
French (fr)
Other versions
EP2342447A1 (de
Inventor
Laurent Albert
Michael Maitre
Stéphane PEYRAZAT
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.)
Valeo Systemes de Controle Moteur SAS
Original Assignee
Valeo Systemes de Controle Moteur SAS
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 Valeo Systemes de Controle Moteur SAS filed Critical Valeo Systemes de Controle Moteur SAS
Publication of EP2342447A1 publication Critical patent/EP2342447A1/de
Application granted granted Critical
Publication of EP2342447B1 publication Critical patent/EP2342447B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F02M26/65—Constructional details of EGR valves
    • F02M26/66—Lift valves, e.g. poppet valves
    • F02M26/67—Pintles; Spindles; Springs; Bearings; Sealings; Connections to actuators
    • 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
    • F02M26/52—Systems for actuating EGR valves
    • F02M26/53—Systems for actuating EGR valves using electric actuators, e.g. solenoids
    • F02M26/54—Rotary actuators, e.g. step motors

Definitions

  • the invention relates to the field of thermal engines, particularly for motor vehicles.
  • It relates more particularly to an exhaust gas recirculation valve.
  • Exhaust gas recirculation systems are known under the name EGR for "Exhaust Gas Recirculation" and allow to inject exhaust gases to the intake of a combustion engine to reduce emissions in particular.
  • these systems generally comprise a valve such as that described in the documents EP 1 605 155 , and EP 1 526 271 A1 .
  • a rotary valve for installation in an air intake line and having a support plate is like a document EP 0 364 137 A2 .
  • the invention aims to simplify and optimize such a recirculation valve.
  • the invention relates to an exhaust gas recirculation valve for an internal combustion engine, according to claim 1.
  • the body of the valve is then made of the support plate.
  • valve transmission chain ie the actuator, the transmission wheel, and the valve subassembly
  • the support plate which considerably reduces mounting dispersions as well as the uncertainties associated with dimension chains.
  • the use of the support plate also allows a significant reduction in manufacturing costs since the cutting and possibly stamping of a single sheet replaces, with reference to the state of the art, the molding of several parts and their assembly. one against the other.
  • the motor, the valve subassembly, and the projecting shaft are preferably carried only by the support plate, without contact with other support or protection elements.
  • the figure 1 represents a recirculation valve according to the invention. It comprises a rotary actuator consisting of an electric motor 1, a valve 2, and a body which here comprises a support plate 3.
  • This valve is intended to be mounted on a duct, thanks to the fixing lugs 6 connected to the support plate 3, so that the valve 2 can act in a conventional manner against a seat (not shown) for metering the exhaust gas. which are reinjected on admission.
  • valve subassembly 7 adapted to transform a rotational movement of an input wheel 8 into a translational movement of the valve 2.
  • a valve subassembly is conventional (see for example the document EP 1 605 155 cited above) and will not be described in more detail here.
  • the input wheel 8 is defined only on an angular sector corresponding to the maximum amplitude that is provided for the stroke of the valve 2.
  • a pinion 9 is fixed on the output shaft of the engine 1 and meshes with a first toothed portion 10 of a transmission wheel 11.
  • the transmission wheel 11 also meshes, via a second toothed portion 12, with the wheel of inlet 8 of the valve subassembly 7.
  • the first 10 and second 12 toothed portions are rigidly connected, the transmission wheel 11 being made in one piece or more rigidly connected.
  • the presence of the two toothed portions 10, 12 makes it possible to define a reduction ratio as a function of the engine 1 used, it being understood that, as a variant, not shown, the transmission wheel 10 may comprise only a single toothed portion which meshes with the With the pinion 9 and the input wheel 8, the transmission wheel 10 is rotatably mounted on a shaft 13 projecting transversely to the support plate 3.
  • the support plate 3 is represented alone at figure 3 .
  • This is in the present example a stamped sheet on which is fixed the shaft 13 and in which are formed a first opening 14 for housing the motor 1 and a second opening 15 for housing the valve subassembly 7.
  • the openings 14, 15 are here disposed on either side of the shaft 13 which is fixed perpendicular to the sheet 3 by welding, screwing or any other means.
  • Ribs 16 can be formed on the sheet 3 during stamping, in order to stiffen it.
  • a peripheral flange 17 may also be formed on the sheet 3 during stamping.
  • the openings 14, 15 are each surrounded by a skirt 18, 19 protruding perpendicular to the corresponding opening.
  • These skirts are here advantageously formed during the stamping of the support plate 3 and may include diameter shrinkage for reasons of rigidity and to adjust to the diameter of the element intended to take place (motor 1 or together valve 7).
  • the motor 1 and the valve assembly 7 are thus mounted in the corresponding opening 14, 15 so that they are held by tight fitting, welding, screwing or any other known means.
  • the skirts 18, 19 allow a more robust tight assembly of the elements 1, 7 on the sheet 3.
  • the carcass of the engine 1, the periphery of the valve assembly 7, and the shaft 13 are thus each placed in position directly with respect to the sheet 3.
  • the carcass of the engine 1 determines the position of the rotation of the pinion 9 and the valve assembly 7 determines the position of the translation axis of the valve 7.
  • the axis of rotation of the pinion 9, the translation axis of the valve 7 and the shaft 13 are therefore all three each directly in position relative to the same part (the sheet 3) and, being each in the present example, perpendicular to the sheet 3, they are all three parallel to each other to allow safe operation of the gear 9, 11, 8.
  • the parallelism of these axes then depends only on a reduced dimension chain.
  • the figure 4 illustrates a variant of the support plate. Elements similar to the realization of the figure 3 are numbered in the same way.
  • the support sheet 3 has a deeper stamping so that the flange 17 is further away from the openings 14, 15 than a perpendicular flange 24 is formed. between the flange 17 and the remainder of the sheet 3. According to this variant, the sheet 3 still gains rigidity.
  • the shaft 13 is further mounted on a base 20 ensuring a good perpendicularity with the sheet, even under stress.
  • the figure 5 shows this support plate 3 cooperating with the engine 1, the valve assembly 7 and the transmission wheel 11, which are identical to those of the figure 2 .
  • the engine 1 is here mounted in its opening 14, the skirt 18 is reduced to a reinforcing rib, and held in place by means of a plate 21 welded to the motor 1 on the one hand and welded to the flange 17 on the other hand.
  • Other known fastening means can of course be used.
  • the motor 1 can for example be forced into the opening 14 or welded. A good maintenance of the engine 1 is thus guaranteed so that the axis of rotation of the pinion 9 is perpendicular to the sheet 3.
  • Engine 1 of this figure 5 is represented alone at the figure 6 .
  • the plate 21 has a notch 22 to avoid interfering with the transmission wheel 11 (see figure 6 ).
  • the engine 1 further comprises, in the present example, an O-ring 23 which, when the engine 1 is fixed in the opening 14, seals the mounting.
  • the electrical connections (not shown) of the motor 1 are advantageously arranged on the top of the motor, that is to say near the pinion 9, and for example between the carcass and the plate 21. These electrical connections can thus be directly wired to connector 5 (see figure 1 ) by the inside of the cover 4, while the carcass of the engine 1 is sealed under the O-ring 23.
  • valve according to the invention thus eliminates a protective cover disposed around the engine, as c ' is the case in the prior art where this cover is generally made in the form of an aluminum alloy foundry which has the disadvantage of putting in contact Thermal motor casing with hot exhaust gases which leads to a heating of the engine, which is here avoided.
  • the shape of the stamped support sheet may be adapted depending on the elements it supports or its mounting mode on the engine for which it is intended.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Electrically Driven Valve-Operating Means (AREA)

Claims (15)

  1. Abgasrückführungsventil für einen Verbrennungsmotor, das Folgendes aufweist:
    - einen drehbaren Stellantrieb (1), der ein Ritzel (9) in Drehung versetzen kann;
    - eine Ventilschieber-Untereinheit (7), die ein Eingangsrad (8), einen Ventilschieber (2) und eine Bewegungsumwandlungsvorrichtung aufweist, die geeignet ist, um die Drehung des Eingangsrads (8) in eine Translationsbewegung des Ventilschiebers (2) umzuwandeln;
    - ein Übertragungsrad (11), das einerseits in das Ritzel (9) und andererseits in das Eingangsrad (8) eingreift;
    wobei das Ventil außerdem ein Stützblech (3) aufweist, in dem eine erste Öffnung (14) hergestellt ist, in der der drehbare Stellantrieb (1) angeordnet ist, wobei eine vorstehende Welle (13) am Stützblech (3) befestigt und das Übertragungsrad (11) drehbar auf die vorstehende Welle (13) montiert ist,
    dadurch gekennzeichnet, dass eine zweite Öffnung (15), in der die Ventilschieber-Untereinheit (7) angeordnet ist, in dem Blech hergestellt ist und dass das Ventil kein Gussgehäuse aufweist, wobei das Stützblech (3) alleine die Positionierung des drehbaren Stellantriebs (1), der Ventilschieber-Untereinheit (7) und des Übertragungsrads (11) gewährleistet.
  2. Ventil nach Anspruch 1, dadurch gekennzeichnet, dass es außerdem eine Schutzhaube (4) des Ritzels (9), des Eingangsrads (8) und des Übertragungsrads (11) aufweist, wobei diese Haube (4) direkt auf das Stützblech (3) montiert wird.
  3. Ventil nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, dass die Achsen der Öffnungen (14, 15) und der vorstehenden Welle (13) parallel sind.
  4. Ventil nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Öffnungen (14, 15) gegenüber dem Stützblech (3) durchgehend sind.
  5. Ventil nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Öffnungen (14, 15) zu beiden Seiten der vorstehenden Welle (13) angeordnet sind.
  6. Ventil nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Drehachse des Ritzels (9) und das Gehäuse des Motors (1) koaxial sind.
  7. Ventil nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Translationsachse des Ventilschiebers (2) und der Umriss der Ventilschiebereinheit (7) koaxial sind.
  8. Ventil nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass der Motor (1) in dem Teil von ihm dicht ist, der sich ausgehend vom Stützblech (3) in der dem Ritzel (9) entgegengesetzten Richtung erstreckt.
  9. Ventil nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass eine Dichtung (23) zwischen dem Motor (1) und dem Stützblech (3) angeordnet ist.
  10. Ventil nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass das Stützblech (3) eine erste Schürze (18) aufweist, die die erste Öffnung (14) umrandet, und dass das Stützblech (3) eine zweite Schürze (19) aufweist, die die zweite Öffnung (15) umrandet.
  11. Ventil nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass das Stützblech (3) einen Umfangskragen (17) aufweist.
  12. Ventil nach Anspruch 11, dadurch gekennzeichnet, dass das Stützblech (3) eine Umfangsrandleiste (24) aufweist, die den Kragen (17) mit dem Rest des Stützblechs (3) verbindet.
  13. Ventil nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass das Stützblech (3) Versteifungsrippen (16) aufweist.
  14. Ventil nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Motor (1), die Ventilschieber-Untereinheit (7) und die vorstehende Welle (13) nur vom Stützblech (3) getragen werden.
  15. Verfahren zur Herstellung eines Ventils nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, dass es die folgenden Schritte aufweist:
    - Liefern eines Metallblechs (3);
    - Tiefziehen des Blechs (3);
    - Herstellen der Öffnungen (14, 15);
    - Befestigen der vorstehenden Welle (13);
    - Befestigen des Motors (1) und der Ventilschieber-Untereinheit (7);
    - Montieren des Übertragungsrads (11) auf die vorstehende Welle (13);
    - Montieren einer Haube (4) direkt auf das Stützblech (3).
EP09763827A 2008-10-14 2009-10-07 Agr-ventil mit einer trägerplatte Not-in-force EP2342447B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0805682A FR2937109B1 (fr) 2008-10-14 2008-10-14 Vanne egr comportant une tole de support
PCT/EP2009/007192 WO2010043328A1 (fr) 2008-10-14 2009-10-07 Vanne egr comportant une tole de support

Publications (2)

Publication Number Publication Date
EP2342447A1 EP2342447A1 (de) 2011-07-13
EP2342447B1 true EP2342447B1 (de) 2012-09-26

Family

ID=40652705

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09763827A Not-in-force EP2342447B1 (de) 2008-10-14 2009-10-07 Agr-ventil mit einer trägerplatte

Country Status (4)

Country Link
EP (1) EP2342447B1 (de)
ES (1) ES2396413T3 (de)
FR (1) FR2937109B1 (de)
WO (1) WO2010043328A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111356831A (zh) * 2017-10-04 2020-06-30 法雷奥电机控制系统公司 致动器及包括其的流体循环阀

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010064233A1 (de) 2010-12-28 2012-06-28 Continental Automotive Gmbh Abgasturbolader mit wassergekühltem Turbinengehäuse mit integriertem elektrischen Wastegate-Steller
DE102011001535A1 (de) * 2011-03-24 2012-09-27 Pierburg Gmbh Kfz-Abgasrückführungs-Ventilanordnung
GB2579354B (en) * 2018-11-23 2022-08-10 Helical Tech Ltd General purpose actuator

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19825727A1 (de) * 1998-06-09 1999-12-16 Mannesmann Vdo Ag Drosselklappenstutzen
US6135415A (en) * 1998-07-30 2000-10-24 Siemens Canada Limited Exhaust gas recirculation assembly
US6935320B2 (en) * 2001-11-08 2005-08-30 Siemens Vdo Automotive Inc. Apparatus and method for exhaust gas flow management of an exhaust gas recirculation system
PT1526271E (pt) * 2003-10-24 2007-06-29 Cooper Standard Automotive D Válvula de recirculação de gases de escape.
US7104523B2 (en) * 2004-06-12 2006-09-12 Borgwarner Inc. Valve having contamination counter-measures
DE102005028374A1 (de) * 2005-06-20 2006-12-21 Robert Bosch Gmbh Steller für ein Stellorgan

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111356831A (zh) * 2017-10-04 2020-06-30 法雷奥电机控制系统公司 致动器及包括其的流体循环阀

Also Published As

Publication number Publication date
ES2396413T3 (es) 2013-02-21
WO2010043328A1 (fr) 2010-04-22
FR2937109B1 (fr) 2012-12-14
EP2342447A1 (de) 2011-07-13
FR2937109A1 (fr) 2010-04-16

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