EP3134629B1 - Vanne de circulation de fluide - Google Patents

Vanne de circulation de fluide Download PDF

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Publication number
EP3134629B1
EP3134629B1 EP15725782.5A EP15725782A EP3134629B1 EP 3134629 B1 EP3134629 B1 EP 3134629B1 EP 15725782 A EP15725782 A EP 15725782A EP 3134629 B1 EP3134629 B1 EP 3134629B1
Authority
EP
European Patent Office
Prior art keywords
valve
drive member
control shaft
stop
flap
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.)
Active
Application number
EP15725782.5A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3134629A1 (fr
Inventor
Michael SANCHES
Guillaume Davoult
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
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Publication date
Application filed by Valeo Systemes de Controle Moteur SAS filed Critical Valeo Systemes de Controle Moteur SAS
Publication of EP3134629A1 publication Critical patent/EP3134629A1/fr
Application granted granted Critical
Publication of EP3134629B1 publication Critical patent/EP3134629B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
    • F02D9/1065—Mechanical control linkage between an actuator and the flap, e.g. including levers, gears, springs, clutches, limit stops of the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
    • F02D9/107—Manufacturing or mounting details
    • 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 present invention relates to a fluid circulation valve, and more specifically to a fluid circulation valve for a motor vehicle.
  • fluid flow valves comprising a body having a fluid passage duct, a flap, a control shaft consisting of a metal rod, the flap, free to rotate, and a drive member. rotation of the control shaft. The rotation of the flap makes it possible to regulate the flow of fluid flowing in the duct.
  • the drive member comprises at least one toothed sector.
  • the toothed sector is connected in rotation to a free return wheel in rotation, relative to the body, about an axis of articulation parallel to a longitudinal axis of the control shaft.
  • An electric motor rotates the return wheel which in turn rotates the toothed sector and therefore the flap via the control shaft.
  • the valve also comprises at least one radial abutment defining an angular stroke of the toothed sector.
  • a torsion spring connected to the toothed sector and to the body makes it possible to return the driving member to a position of equilibrium dependent on the radial stops. Through the spring is also provided an axial thrust under the toothed sector so that its vertical position is maintained during its rotation.
  • a disadvantage of this type of device comes from the fact that the toothed sector is not stopped along the longitudinal axis of the shaft, the toothed sector can escape from its housing and potentially injure an operator during the mounting in the valve body. This can also cause delays or deadlocks in the workflow.
  • the present invention proposes a fluid circulation valve comprising a body having a fluid passage duct, a flap shutter of the duct, a control shaft of the shutter, free to rotate, and a drive member in rotation of the control shaft, characterized in that the valve comprises an axial stop means of the drive member.
  • the invention thus has the advantage of not requiring a retaining pressure on the toothed sector during its assembly, whether performed manually or through a tool.
  • the advantages of such a solution are a saving in cost, time and safety in the method of mounting the valve.
  • the axial stop means of the drive member is formed on an angular stop stop of the drive member.
  • the axial stop means is formed by an obviously machined or integrated in the foundry in an angular stop stop of the drive member
  • the recess is configured to receive a radial abutment of the drive member.
  • the valve comprises a plate, connected in rotation to the control shaft and overmolded by the drive member, the plate defining at least a first radial abutment.
  • the invention also relates to a motor vehicle equipped with a valve according to the invention.
  • the invention relates to a fluid circulation valve 1, in particular for a motor vehicle.
  • This is a valve for adjusting the intake gas flow of a heat engine, in particular a metering valve for a diesel engine.
  • the valve is a valve well known to those skilled in the art and is for example such as that described in the patent application FR2992046 and EP1515023 .
  • the valve comprises a body 2 inside which is formed a conduit 3 for circulating the fluid.
  • the body 2 is here intended to be mounted, by means of connections, on an engine intake line so that the portion of the gases flowing in this branch passes through the duct and is directed towards the engine to participate in the engine. combustion.
  • the connections and the intake line have not been shown, being well known in themselves.
  • control shaft 4 In the body 2 of the valve 1, are received a control shaft 4, free in rotation with, integral with it, a flap 5 for closing the duct 3 according to the angular position of the control shaft 4, as illustrated by the arrow 20 rotating about the longitudinal axis A of the control shaft 4.
  • control shaft 4 is connected in rotation to the shutter 5 by fasteners 14, here for example a screw-nut system, or other, which allows the shutter to rotate with the shaft between two extreme positions.
  • fasteners 14 here for example a screw-nut system, or other, which allows the shutter to rotate with the shaft between two extreme positions.
  • One of the positions totally open, as on the figure 1 passes the fluid, and the other, not shown, blocks its passage, the flap then being applied against the side wall of the duct 3.
  • the valve comprises connecting means 6, 7 pivot between said body 2 and said control shaft 4.
  • the control shaft 4 can thus pivot freely about the axis A, by a sliding adjustment provided between the shaft and the connecting means.
  • the end of the shaft, referred to as upper 12 opens outwardly of the body 2 of the valve 1 to be connected to a drive member 21 in rotation of said control shaft 4.
  • the drive member 21 is, for example, a toothed sector 22 comprising a central portion 24 centered on the control shaft 4 and a radial protrusion 26, forming a sector d angle slightly greater than the angular clearance of the flap and provided with gear teeth 28.
  • toothed sector 22 is here linked in rotation to a return wheel 30 free in rotation relative to the body 2 about an axis of articulation 32 parallel to the longitudinal axis A of the control shaft 4 .
  • the valve comprises an electric motor, not shown, in particular a stepping motor.
  • the electric motor meshes with a large pinion 36 of the idler wheel 30 while the toothed sector 22 meshes with a small pinion 37 of the latter.
  • the actuation of the motor thus causes a rotation of the return wheel 30 which in turn causes rotation of the toothed sector 22 and therefore of the flap 5 via the control shaft 4.
  • the drive member 21, the intermediate wheel 30 and / or said motor are positioned in a housing 38 of the valve closed by a cover 40.
  • the valve comprises at least one torsion spring 42 for positioning the flap 5 in a rest position, here an open position. By position of rest, one hears a position taken when the motor of the valve is not actuated.
  • the first spring 42 is supported, on the one hand on the body 2, and on the drive member 21, at a slot 46 illustrated figure 2 .
  • the first spring 42 is centered, in particular, on the longitudinal axis A.
  • the slot 46 accommodates one end of the spring 42, illustrated figure 1 .
  • the slot 46 passes axially through the wall 50 of the drive member 21.
  • the slot 46 advantageously defines two attachment positions for the spring 42.
  • the slot 46 is oriented, for example, along a sector of angle, centered on the longitudinal axis A of the control shaft 4.
  • the slot 46 defines in this way a hooking position of the spring at each of its angular ends.
  • the drive member 21 is overmolded on the control shaft 4. This overmolding thus ensures a connection without play between these two bodies. It is thus possible to pre-assemble them before mounting in the body 2.
  • the drive member 21 is, for example, plastic material and / or the control shaft is, for example, metal, especially stainless steel.
  • the valve according to the invention comprises a plate 54, in particular a metal plate, defining at least a first radial abutment 56, ( figure 2 ) delimiting an angular stroke of the drive member 21. More specifically, the plate 54 is rotatably connected to the control shaft 4 and overmolded by the drive member 21. In the extreme angular positions of the valve , the radial abutment 56 comes into contact with a stop stop 200 angular visible on the figure 3 . The stop stop 200 angular is thus arranged so as to stop the radial abutment 56.
  • the angular stop stop 200 is integrated in the body of the valve.
  • the angular stop stop 200 comprises an axial stop means 201 of the drive member 21.
  • this axial stop means 201 is an axial stop means during assembly of the valve, and more specifically during assembly of the toothed sector.
  • this axial stop means 201 is formed by a recess, of the groove type, machined in the angular stop stop 200 or integrated in the foundry.
  • This recess is configured to receive the radial abutment 56. Its size is adapted to that of the radial abutment 56.
  • the depth of the axial stop means 201 allows the insertion of a large part of the radial abutment 56.
  • the axial abutment 56 is sufficiently inserted so as not to escape along the axis A of the shaft 4 in a direction opposite to the shaft 4, towards the outside of the valve.
  • this axial stop means 201 is formed on one side of the stop stop 200 angular exactly where the radial stop 56 will abut. The axial stop at the end of the stroke can thus be inserted into the stop means 201.
  • the drive member comprises a second radial abutment 56 'visible on the figure 2 .
  • the plate comprises two radial arms not visible respectively terminated by the radial stops 56, 56 '.
  • the plate 54 has a hole 60 for passage of the control shaft 4.
  • the valve comprises a sensor target 66. It is, for example, a flat magnet described in the application FR2992046 .
  • Such a valve is more particularly intended for applications as an intake gas metering valve of internal combustion engines, whether gasoline or diesel. It also finds its applications as an exhaust gas recirculation valve or EGR valve (for Exhaust Gas Recirculation according to the English terminology). Other applications of the valve according to the invention are also possible without departing from the scope of the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Electrically Driven Valve-Operating Means (AREA)
  • Lift Valve (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
EP15725782.5A 2014-04-22 2015-04-22 Vanne de circulation de fluide Active EP3134629B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1453601A FR3020112B1 (fr) 2014-04-22 2014-04-22 Vanne de circulation de fluide
PCT/FR2015/051093 WO2015162379A1 (fr) 2014-04-22 2015-04-22 Vanne de circulation de fluide

Publications (2)

Publication Number Publication Date
EP3134629A1 EP3134629A1 (fr) 2017-03-01
EP3134629B1 true EP3134629B1 (fr) 2018-07-25

Family

ID=50841856

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15725782.5A Active EP3134629B1 (fr) 2014-04-22 2015-04-22 Vanne de circulation de fluide

Country Status (4)

Country Link
EP (1) EP3134629B1 (zh)
CN (1) CN106460681B (zh)
FR (1) FR3020112B1 (zh)
WO (1) WO2015162379A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109611244A (zh) * 2019-02-01 2019-04-12 联合汽车电子有限公司 废气再循环阀
CN111255599A (zh) * 2020-03-17 2020-06-09 无锡同益汽车动力技术有限公司 一种排气截流阀

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBO20030530A1 (it) * 2003-09-15 2005-03-16 Magneti Marelli Powertrain Spa Valvola a farfalla servoassistita provvista di una molla a flessione e di una molla a spirale per stabilire la posizione di limp-home
ITBO20030531A1 (it) * 2003-09-15 2005-03-16 Magneti Marelli Powertrain Spa Valvola a farfalla a controllo elettronico provvista di
JP4457038B2 (ja) * 2005-04-14 2010-04-28 日立オートモティブシステムズ株式会社 内燃機関のモータ駆動式絞り弁制御装置
FR2979410B1 (fr) * 2011-08-23 2013-08-23 Valeo Sys Controle Moteur Sas Vanne, notamment pour circuit d'admission de moteur d'automobile, comportant un moyen d'entrainement en retour d'un volet obturateur en cas de defaillance du moyen de rappel
FR2992046B1 (fr) 2012-06-15 2015-05-01 Valeo Sys Controle Moteur Sas Vanne de circulation de fluide, notamment pour vehicule automobile

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
WO2015162379A1 (fr) 2015-10-29
FR3020112B1 (fr) 2017-01-27
EP3134629A1 (fr) 2017-03-01
CN106460681A (zh) 2017-02-22
FR3020112A1 (fr) 2015-10-23
CN106460681B (zh) 2020-03-17

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