WO2011118880A1 - Dispositif à injection variable d'un turbocompresseur - Google Patents

Dispositif à injection variable d'un turbocompresseur Download PDF

Info

Publication number
WO2011118880A1
WO2011118880A1 PCT/KR2010/003225 KR2010003225W WO2011118880A1 WO 2011118880 A1 WO2011118880 A1 WO 2011118880A1 KR 2010003225 W KR2010003225 W KR 2010003225W WO 2011118880 A1 WO2011118880 A1 WO 2011118880A1
Authority
WO
WIPO (PCT)
Prior art keywords
ring
contact
lever plate
nozzle
turbocharger
Prior art date
Application number
PCT/KR2010/003225
Other languages
English (en)
Korean (ko)
Inventor
권성
안재원
노태현
Original Assignee
(주)계양정밀
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 (주)계양정밀 filed Critical (주)계양정밀
Publication of WO2011118880A1 publication Critical patent/WO2011118880A1/fr

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/10—Final actuators
    • F01D17/12—Final actuators arranged in stator parts
    • F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
    • F01D17/16—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of nozzle vanes
    • F01D17/165—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of nozzle vanes for radial flow, i.e. the vanes turning around axes which are essentially parallel to the rotor centre line
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/12—Control of the pumps
    • F02B37/24—Control of the pumps by using pumps or turbines with adjustable guide vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2220/00—Application
    • F05D2220/40—Application in turbochargers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • variable nozzle device of the turbocharger of the present invention and more particularly, to prevent the drive ring from being separated by a locking member integrally formed in the nozzle ring, and to install the driving ring in the nozzle ring formed with the locking member. It relates to a variable nozzle device of a turbocharger to improve the assemblability by forming a through-hole in the drive ring as possible.
  • a turbocharger is a device that rotates a turbine by using the energy of exhaust gas and pressurizes air by a compressor connected to the turbine.
  • the turbocharger supplies pressurized air to the combustion chamber of the engine to increase the filling efficiency of the engine to increase the output. Do it.
  • the turbocharger changes the energy that can be provided by the exhaust gas according to the operating state of the engine. Therefore, the turbine nozzle is varied so that the exhaust gas is applied to the turbine in order to adjust the amount appropriately according to the operating state of the engine to operate the engine more efficiently. It allows you to control the energy you provide.
  • a method of varying the turbine nozzle a method of controlling the flow direction of the exhaust gas supplied to the turbine by rotating a plurality of vanes provided in the flow path through which the exhaust gas is supplied to the turbine is mainly used.
  • variable nozzle device of the conventional turbocharger is rotatably installed in the nozzle ring 10 fixed to the housing 1 and supplied to the turbine 2. It is composed of a structure having a plurality of vanes (3) for controlling the flow rate of the gas.
  • the drive ring 20 is formed concentrically with the nozzle ring 10 and is rotatably installed in the nozzle ring 10, and is integrally connected to the rotation shaft 30 of the vane 3 and the drive ring 20 is connected to the drive ring 20. It consists of a lever plate 40 extending toward.
  • the nozzle ring 10 has a ring shape in which a through hole 11 is formed at a central portion thereof, and a plurality of rotation shafts 30 are rotatably mounted.
  • One end of the rotating shaft 30 is equipped with a vane 3 to adjust the amount of exhaust gas guided to the turbine (2).
  • the lever plate 40 is fixed to the other end of the rotation shaft 30.
  • An end of the lever plate 40 extending toward the driving ring 20 is fitted between the driving protrusions 21 protruding from one side of the driving ring 20.
  • the driving ring 20 is connected to an actuator which is externally mounted to generate the power necessary to rotate the vane 3.
  • a plurality of mount pins 50 are mounted on the nozzle ring 10 to prevent separation of the drive ring 20 rotatably mounted on one side of the nozzle ring 10.
  • Mounting pin 50 has a locking step 51 having an extended cross section to prevent the drive ring 20 is separated in the axial direction in the middle portion.
  • a locking projection 31 protruding by a predetermined height is formed at one end of the lever plate 40.
  • the locking protrusion 31 protrudes to a height capable of contacting the housing 1 portion fitted in the through hole 11 in a state where the vanes 3 are rotated as far as possible so as not to contact the turbine 2.
  • the rotation angle of the vane 3 and the rotation angle of the driving ring 20 are limited by the rotation angle of the lever plate 40 by the locking protrusion 31.
  • At least one stopper 12 is mounted to the nozzle ring 10.
  • the stopper 12 protrudes to a predetermined height so that the vane 3 is in contact with the lever plate 40 in a state in which it is rotated as far as possible so as not to contact the turbine 2 so that the lever plate 40 can no longer be rotated. It acts as a restraint.
  • the lever plate 40 should have sufficient thickness and rigidity to be in contact with the stopper 12 and to withstand collisions.
  • variable nozzle device of the turbocharger having the conventional structure as described above should be equipped with a separate mount pin 50 to prevent the drive ring 20 from being separated, the work time is increased during assembly and the manufacturing cost is increased due to an increase in parts. There is a problem that is increased. In addition, there is a risk that an accident occurs because the mount pin 50 is separated while undergoing heat deformation for a long time.
  • An object of the present invention devised in view of the above is to provide a variable nozzle device of a turbocharger which can improve assembly and operability while simply configuring a driving mechanism that can prevent the departure of a driving ring. have.
  • Still another object of the present invention is to provide a turbocharger variable nozzle device capable of simplifying the structure of the drive ring by forming a driving groove into which the end of the lever plate is inserted in the inner surface of the drive ring.
  • Still another object of the present invention is to provide a variable nozzle apparatus of a turbocharger, in which an inner surface of the driving ring is rotated in contact with a locking member, thereby reducing friction and improving operability.
  • the other side of the drive ring is supported by the locking member by rotating the drive ring.
  • the locking member is formed of a horizontal projection protruding radially so as to contact the other side of the drive ring.
  • the locking member is formed of a vertical protrusion protruding to contact the inner surface of the drive ring and the horizontal projection is formed at the end thereof.
  • the locking member includes a vertical protrusion protruding to contact the inner surface of the driving ring and a horizontal protrusion protruding to contact the other side of the driving ring at the end of the vertical protrusion.
  • the plurality of vertical protrusions protrude from the nozzle ring, and the horizontal protrusions are formed on at least two vertical protrusions of the plurality of vertical protrusions.
  • the vertical protrusions are formed in three places.
  • the horizontal projection is formed at a predetermined interval to limit the rotational trajectory of the lever plate
  • the stop surface is provided with a contact surface in the state in which the lever plate is rotated as possible.
  • the stop surface has a shape corresponding to the side shape of the lever plate which is in contact with a predetermined section so as to be in surface contact with the lever plate.
  • the nozzle ring has a contact surface in which the lever plate is in contact with the contact surface in which the drive ring is in contact with the same height.
  • the driving ring is formed with a driving groove having a shape penetrating both sides of the driving ring and recessed to a predetermined depth on the inner side so that the other side of the lever plate can be inserted.
  • the lever plate has a symmetrical shape with respect to the center line.
  • variable nozzle device of the turbocharger according to the present invention has a structure in which the drive ring is prevented from being separated by a catching member integral with the nozzle ring, and thus the assembly mechanism and the operability are improved while the driving mechanism is simply configured. There is.
  • the contact surface contacting the lever plate and the contact surface contacting the driving ring have the same height, and the thickness of the nozzle ring can be made thinner as the latching portion protrudes, and the length of the rotation shaft as the thickness of the nozzle ring is reduced. Since the weight is reduced by reducing the operation performance due to the weight reduction is improved.
  • FIG. 1 is a cross-sectional view showing a cross section of a conventional turbocharger
  • FIG. 2 is a plan view illustrating a variable nozzle device of the turbocharger shown in FIG. 1;
  • FIG. 3 is a perspective view showing a variable nozzle device of a turbocharger according to an embodiment of the present invention
  • FIG. 4 is a plan view showing a variable nozzle device of the turbocharger shown in FIG.
  • FIG. 5 is a cross-sectional view taken along line “A-A” of FIG. 4;
  • FIG. 6 is a cross-sectional view of a portion “B-B” of FIG. 4;
  • FIG. 9 is a plan view showing a state in which the drive ring is fitted to the nozzle ring
  • FIG. 10 is a plan view illustrating a state in which the driving ring is supported by the locking member by rotating the driving ring by a predetermined angle in a state of being fitted into the nozzle ring.
  • variable nozzle device of a turbocharger according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.
  • the same reference numerals are given to the same parts as in the conventional structure, and a detailed description thereof will be given with reference to FIG. 1. Quote.
  • FIG. 3 is a perspective view illustrating a variable nozzle device of a turbocharger according to an exemplary embodiment of the present invention
  • FIG. 4 is a plan view illustrating the variable nozzle device of the turbocharger shown in FIG. 3
  • Figure 6 is a cross-sectional view showing a" BB "portion of Figure 4
  • Figure 7 is a state diagram showing the state before the lever plate is rotated
  • FIG. 10 is a view showing a state in which a driving ring is fitted to a nozzle ring.
  • variable nozzle device of the turbocharger which is a preferred embodiment of the present invention as shown, is rotatably installed in the nozzle ring 110 fixed to the housing 1, respectively.
  • the nozzle ring 110 has a ring shape in which a through hole 111 is formed in a central portion thereof, and a plurality of rotation shafts 30 are rotatably mounted.
  • the vane 3 is mounted at one end of the rotation shaft 30, and the lever plate 140 is fixed at the other end.
  • the lever plate 140 includes a connection part 141 into which the pivot shaft 30 is inserted and connected, and an extension part 142 extending from the connection part 141 toward the driving ring 120.
  • the lever plate 140 has a left-right symmetrical shape with respect to the center line, so that the assembly time can be shortened because it has no directionality during assembly.
  • An end portion of the extension part 142 of the lever plate 140 extending toward the driving ring 120 is fitted into the driving groove 121 formed on the inner surface of the driving ring 120.
  • the driving groove 121 penetrates both side surfaces of the driving ring 120 and has a shape recessed by a predetermined depth on the inner surface.
  • a connection hole 122 is formed to be connected to an actuator that is externally mounted and generates an electric power required to rotate the vane 3.
  • the nozzle ring 110 is formed with a locking member 112 protruding to a predetermined height to support the other side of the driving ring 120.
  • the locking member 112 includes a vertical protrusion 113 protruding to contact the inner surface of the driving ring 120 and a horizontal protrusion protruding radially to contact the other side of the driving ring 120 at the end of the vertical protrusion 113. It consists of a protrusion 114.
  • a plurality of vertical protrusions 113 are formed with a predetermined interval to contact the inner surface of the driving ring 120, the horizontal protrusions 114 are formed only on at least two vertical protrusions 113 of the plurality of vertical protrusions 113. It is made of a structure.
  • the horizontal protrusions 114 are formed on the three vertical protrusions 113 having a predetermined interval.
  • the vertical protrusions 113 are formed at a predetermined interval to limit the rotational trajectory of the lever plate 140. That is, the stop plate 113a is provided to be in contact with the lever plate 140 in the maximum rotation.
  • the stop surface 113a has a shape corresponding to the lateral shape of the extension part 142 of the lever plate 140 to be in surface contact with a predetermined section of the extension part 142 of the lever plate 140.
  • the shape of the stop surface 113a is not limited to a structure that is in surface contact with the shape corresponding to the side shape of the lever plate 140 and the extension part 142, and has a shape different from the side shape of the extension part 142. It may be configured as a structure in contact.
  • the inner surface of the drive ring 120 is formed with a through hole 123 recessed to a predetermined depth so that the horizontal protrusion 114 of the locking member 112 passes.
  • the through hole 123 is formed to mate with the horizontal protrusion 114 of the locking member 112.
  • the contact surface 110a in contact with the lever plate 140 in the nozzle ring 110 and the contact surface 110b in contact with the drive ring 120 form the same height. Therefore, the lever plate 140 forming a straight line is mounted to be seated on the contact surface 110a of the nozzle ring 110, and thus may be directly inserted into the driving groove 121 of the driving ring 120.
  • variable nozzle device of the turbocharger operates the actuator to rotate in the direction in which the vanes 3 are closed as shown in FIG. 7, so that the driving ring 120 rotates as much as possible in one direction.
  • the extension portion 142 of the lever plate 140 is in contact with the stop surface 113a of one side is stopped so that the driving ring 120 is no longer rotated. That is, the rotation angle of the driving ring 120 in one direction (the vane opening direction) is limited.
  • the opening and closing angles of the vanes 3 can be limited.
  • the process of mounting the drive ring 120 on the nozzle ring 110 is as follows.
  • the horizontal protrusion 114 of the locking member 112 formed on the nozzle ring 110 is attached to the driving ring 120.
  • the driving ring 120 is in close contact with the nozzle ring 110 while the driving ring 120 is positioned to pass through the formed through hole 123.
  • the horizontal protrusion 114 passes through the through hole 123 and is positioned higher than the thickness of the driving ring 120, thereby rotating the driving ring 120 by a predetermined angle.
  • the horizontal protrusions 114 of 112 support the other side of the driving ring 120. That is, when the driving ring 120 is rotated by a predetermined angle, as shown in FIG. 5, the horizontal protrusion 114 of the locking member 114 supports the other side of the driving ring 120, thereby driving the shaft 120. It is to prevent the deviation from the direction.
  • variable nozzle device of the turbocharger As described above, in the variable nozzle device of the turbocharger according to the present invention, the other side of the driving ring 120 is supported by the horizontal protrusion 114 of the locking member 112 formed integrally with the nozzle ring 110 to drive the drive ring 120. ) Structure, which prevents the deviating from each other, improves the assembly and operability while the driving mechanism is simply configured.
  • the contact surface 110a in contact with the lever plate 140 and the contact surface 110b in contact with the driving ring 120 have the same height, and are formed in the driving groove 121 formed on the inner surface of the driving ring 120. Since the lever plate 140 is formed to be inserted immediately, the thickness of the nozzle ring 110 can be made thinner by the height of the locking member 112, and the rotation shaft is reduced as the thickness of the nozzle ring 110 is reduced. By reducing the length of the 30 can achieve a weight reduction. In addition, since it is possible to reduce the installation space in which the variable nozzle device of the turbocharger is installed, the turbocharger can be miniaturized.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Supercharger (AREA)

Abstract

La présente invention concerne un dispositif à injection variable d'un turbocompresseur qui permet de simplifier un mécanisme d'entraînement tout en empêchant l'écartement d'un anneau d'entraînement et en améliorant la performance d'assemblage ou la maniabilité. La présente invention comprend : un anneau d'injection portant rotatif une pluralité d'arbres de rotation, lesquels sont reliés à des aubes guidant les gaz d'échappement introduits en direction d'un côté de la turbine; des plaques de levier, chacune présentant un côté relié aux arbres de rotation pour mettre ceux-ci en rotation; un anneau d'entraînement monté en contact avec l'anneau d'injection au niveau d'une surface latérale de celui-ci de façon à être rotatif, relié à l'autre côté de chacune des plaques de levier pour mettre ceux-ci en rotation, et formé avec un trou traversant, qui est évidé à une profondeur prédéterminée dans sa surface intérieure; et un élément de retenue en saillie à partir de l'anneau d'injection qui permet de pénétrer dans le trou traversant pour porter l'autre surface latérale de l'anneau d'entraînement. L'anneau d'entraînement est mis en rotation lorsqu'il est en contact étroit avec l'anneau d'injection de façon que l'élément de retenue pénètre dans le trou traversant. Ainsi, l'autre surface latérale de l'anneau d'entraînement peut être portée par l'élément de retenue.
PCT/KR2010/003225 2010-03-26 2010-05-24 Dispositif à injection variable d'un turbocompresseur WO2011118880A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020100027579A KR101174438B1 (ko) 2010-03-26 2010-03-26 터보차져의 가변노즐장치
KR10-2010-0027579 2010-03-26

Publications (1)

Publication Number Publication Date
WO2011118880A1 true WO2011118880A1 (fr) 2011-09-29

Family

ID=44673404

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2010/003225 WO2011118880A1 (fr) 2010-03-26 2010-05-24 Dispositif à injection variable d'un turbocompresseur

Country Status (2)

Country Link
KR (1) KR101174438B1 (fr)
WO (1) WO2011118880A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101431219B1 (ko) 2012-12-14 2014-08-18 한국파워트레인 주식회사 차량용 토크 컨버터
JP2015514924A (ja) * 2012-04-27 2015-05-21 ボーグワーナー インコーポレーテッド 排気ガスターボチャージャ
CN113853476A (zh) * 2019-06-26 2021-12-28 三菱重工发动机和增压器株式会社 可变喷嘴装置以及可变容量型排气涡轮增压器

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3036414B1 (fr) * 2013-08-19 2018-11-28 Borgwarner Inc. Turbocompresseur à gaz d'échappement
US9611751B1 (en) 2015-09-18 2017-04-04 Borgwarner Inc. Geometry for increasing torque capacity of riveted vane lever
CN110761847B (zh) * 2019-10-30 2022-02-25 辽宁工程技术大学 一种涡轮增压器分体滑动式可调喷嘴环

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20070019035A (ko) * 2002-10-18 2007-02-14 미츠비시 쥬고교 가부시키가이샤 가변 노즐 기구, 이를 구비한 배기 터보 차저, 및 가변노즐 기구를 구비한 배기 터보 차저의 제조 방법
EP1635041B1 (fr) * 2004-09-11 2008-01-02 IHI Charging Systems International GmbH Callage de superchargeur
KR20090109405A (ko) * 2008-04-15 2009-10-20 (주)계양정밀 가변노즐을 구비한 터보차져

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20070019035A (ko) * 2002-10-18 2007-02-14 미츠비시 쥬고교 가부시키가이샤 가변 노즐 기구, 이를 구비한 배기 터보 차저, 및 가변노즐 기구를 구비한 배기 터보 차저의 제조 방법
EP1635041B1 (fr) * 2004-09-11 2008-01-02 IHI Charging Systems International GmbH Callage de superchargeur
KR20090109405A (ko) * 2008-04-15 2009-10-20 (주)계양정밀 가변노즐을 구비한 터보차져

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015514924A (ja) * 2012-04-27 2015-05-21 ボーグワーナー インコーポレーテッド 排気ガスターボチャージャ
KR101431219B1 (ko) 2012-12-14 2014-08-18 한국파워트레인 주식회사 차량용 토크 컨버터
CN113853476A (zh) * 2019-06-26 2021-12-28 三菱重工发动机和增压器株式会社 可变喷嘴装置以及可变容量型排气涡轮增压器
CN113853476B (zh) * 2019-06-26 2023-08-29 三菱重工发动机和增压器株式会社 可变喷嘴装置以及可变容量型排气涡轮增压器

Also Published As

Publication number Publication date
KR20110108206A (ko) 2011-10-05
KR101174438B1 (ko) 2012-08-16

Similar Documents

Publication Publication Date Title
WO2011118880A1 (fr) Dispositif à injection variable d'un turbocompresseur
WO2015093739A1 (fr) Ventilateur sirocco multi-volute
WO2013058494A1 (fr) Ventilateur sirocco et climatiseur le comportant
WO2011102608A2 (fr) Double embrayage pour compresseur de véhicule
WO2011068267A1 (fr) Dispositif à tuyère variable de turbocompresseur
WO2016093660A1 (fr) Dispositif d'évacuation d'air pour véhicule
WO2015084001A1 (fr) Molette de ventilation pour automobile
KR20110045444A (ko) 가변 지오메트리 터보차져의 노즐어셈블리
WO2019189987A1 (fr) Palier de butée de feuille de gaz et compresseur comprenant celui-ci
WO2013129788A1 (fr) Ensemble joint d'étanchéité de turbine et appareil de turbine qui comprend l'ensemble joint d'étanchéité de turbine
WO2010120028A1 (fr) Ensemble buse pour un turbocompresseur a geometrie variable, et son procede de production
WO2011118881A1 (fr) Dispositif à injection variable d'un turbocompresseur
WO2015178636A1 (fr) Unité de moteur, unité de pompe et pompe à huile à puissance électrique
WO2015046704A1 (fr) Corps de rotation de tuyère pour turbine à vapeur de type à réaction
WO2016167456A1 (fr) Carter de volute et machine tournante le comportant
WO2023219295A1 (fr) Robinet à tournant sphérique
WO2017010671A1 (fr) Turbine à vapeur du type à réaction
US20210131446A1 (en) Rotating device
EP3311885B1 (fr) Commutateur d'amortisseur
CN211739371U (zh) 一种湿帘漏装防护结构及冷风扇
CN112577112A (zh) 风机及空调器
CN216591954U (zh) 空调器
WO2016021951A1 (fr) Turbocompresseur ayant tige de fonctionnement d'actionneur à réduction de friction
WO2018143564A1 (fr) Pompe à palettes à débit variable
KR101836186B1 (ko) 배터리 냉각장치

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10848522

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 10848522

Country of ref document: EP

Kind code of ref document: A1