EP2342447A1 - Agr-ventil mit einer trägerplatte - Google Patents

Agr-ventil mit einer trägerplatte

Info

Publication number
EP2342447A1
EP2342447A1 EP09763827A EP09763827A EP2342447A1 EP 2342447 A1 EP2342447 A1 EP 2342447A1 EP 09763827 A EP09763827 A EP 09763827A EP 09763827 A EP09763827 A EP 09763827A EP 2342447 A1 EP2342447 A1 EP 2342447A1
Authority
EP
European Patent Office
Prior art keywords
valve
support plate
valve according
pinion
projecting shaft
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.)
Granted
Application number
EP09763827A
Other languages
English (en)
French (fr)
Other versions
EP2342447B1 (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

Links

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 by the name EGR for "Exhaust Gas Recirculation" and allow to reinject exhaust gases at the intake of a combustion engine to reduce emissions in particular.
  • these systems generally comprise a valve such as that described in EP 1 605 155.
  • the invention aims to simplify and optimize such a recirculation valve.
  • an exhaust gas recirculation valve for an internal combustion engine, comprising: a rotary actuator adapted to drive a pinion in rotation; a valve subassembly comprising an input wheel, a valve, and a motion transformation device adapted to convert the rotation of the input wheel into translation of the valve;
  • a transmission wheel meshing on the one hand with the pinion and on the other hand with the input wheel characterized in that it further comprises a support plate in which is formed a first opening, in which is disposed the rotary actuator, and a second opening in which is disposed the valve subassembly, a projecting shaft being fixed to the support plate and the transmission wheel being mounted to rotation on the salient tree.
  • 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.
  • valve according to the invention may further comprise the following preferred features, taken alone or in combination:
  • the valve further comprises a protective cover of the pinion, the input wheel and the transmission wheel, the cover being mounted directly on the support plate; the axes of said openings and the projecting shaft are parallel;
  • said openings are through-vis-à-vis the support plate; said openings are arranged on the other of the salient tree;
  • the axis of rotation of the pinion and the carcass of the engine are coaxial;
  • the motor is sealed on its portion extending from the support plate in the opposite direction to the pinion;
  • the support sheet comprises a first skirt bordering the first opening
  • the support sheet comprises a second skirt bordering the second opening; the support sheet comprises a peripheral collar; the support plate has a perpendicular flange connecting the collar to the rest of the support plate; the support sheet comprises stiffening ribs.
  • Another object of the invention is a method of manufacturing a valve as described above.
  • This process which is particularly advantageous in terms of manufacturing cost, comprises the following steps:
  • FIG. 1 is a perspective view of a recirculation valve according to the invention.
  • FIG. 2 is a side view of the valve of Figure 1, the protective cover is not shown;
  • FIG. 3 is a perspective view of the support plate of the valve of Figures 1 and 2;
  • FIG. 4 is a perspective view of the support plate of a valve according to a second embodiment of the invention.
  • FIG. 5 is a perspective view of the recirculation valve according to the second embodiment of the invention
  • FIG. 6 is a perspective view of the rotary actuator used in the two embodiments of FIGS. 1 to 5.
  • Figure 1 shows 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 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 sheet 3 is shown alone in FIG. 3. In the present example, it is a stamped sheet on which is fixed the shaft 13 and in which are formed a first opening 14 intended to house the engine 1 and a second openings 15 for housing the valve subassembly 7.
  • the openings 14, 15 are here disposed on either side of the shaft 13 which is fixed perpendicularly 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 . 1, the periphery of the valve assembly I 1 and the shaft 13 are each placed in position directly with respect to the sheet 3.
  • the carcass of the engine 1 determines the position of the axis of rotation of the pinion 9
  • 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 all three set 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.
  • FIG. 4 illustrates a variant of the support plate. Elements similar to the embodiment of FIG. 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.
  • 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.
  • FIG. 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 FIG. 2.
  • the engine 1 is here mounted in its opening 14, whose 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.
  • the motor 1 of this FIG. 5 is shown alone in FIG. 6.
  • the plate 21 has a notch 22 so as not to interfere with the transmission wheel 11 (see FIG. 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 the connector 5 (see Figure 1) from the inside of the cover 4, while the housing of the engine 1 is sealed under the O-ring 23.
  • the valve according to the invention thus eliminates a protective cover arranged around the motor, as 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)
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 true EP2342447A1 (de) 2011-07-13
EP2342447B1 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)

Families Citing this family (4)

* 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
FR3071898B1 (fr) * 2017-10-04 2020-07-10 Valeo Systemes De Controle Moteur Actionneur et vanne de circulation de fluide le comprenant
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
ES2288205T3 (es) * 2003-10-24 2008-01-01 Cooper-Standard Automotive (Deutschland) Gmbh Valvula de realimentacion 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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010043328A1 *

Also Published As

Publication number Publication date
EP2342447B1 (de) 2012-09-26
FR2937109A1 (fr) 2010-04-16
WO2010043328A1 (fr) 2010-04-22
ES2396413T3 (es) 2013-02-21
FR2937109B1 (fr) 2012-12-14

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