EP1840386A1 - Vordrall-Leitvorrichtung - Google Patents

Vordrall-Leitvorrichtung Download PDF

Info

Publication number
EP1840386A1
EP1840386A1 EP06405137A EP06405137A EP1840386A1 EP 1840386 A1 EP1840386 A1 EP 1840386A1 EP 06405137 A EP06405137 A EP 06405137A EP 06405137 A EP06405137 A EP 06405137A EP 1840386 A1 EP1840386 A1 EP 1840386A1
Authority
EP
European Patent Office
Prior art keywords
axis
vane
guide
blade
guided
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Withdrawn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
EP06405137A
Other languages
German (de)
English (en)
French (fr)
Inventor
Daniel Oeschger
Josef Bättig
Adrian Kopp
Janpeter KÜHNEL
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.)
Accelleron Industries AG
Original Assignee
ABB Turbo Systems AG
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 ABB Turbo Systems AG filed Critical ABB Turbo Systems AG
Priority to EP06405137A priority Critical patent/EP1840386A1/de
Priority to KR1020087023917A priority patent/KR20080106955A/ko
Priority to PCT/CH2007/000090 priority patent/WO2007112601A1/de
Priority to EP07701890A priority patent/EP2002127B1/de
Priority to CNA2007800117121A priority patent/CN101415951A/zh
Priority to JP2009501808A priority patent/JP2009531581A/ja
Priority to DE502007002109T priority patent/DE502007002109D1/de
Priority to US11/727,770 priority patent/US20070231125A1/en
Publication of EP1840386A1 publication Critical patent/EP1840386A1/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/46—Fluid-guiding means, e.g. diffusers adjustable
    • F04D29/462—Fluid-guiding means, e.g. diffusers adjustable especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/46—Fluid-guiding means, e.g. diffusers adjustable
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4213—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps suction ports
    • 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
    • F05D2250/00—Geometry
    • F05D2250/50—Inlet or outlet
    • F05D2250/51—Inlet

Definitions

  • the invention relates to the field of turbomachines subjected to exhaust gases of internal combustion engines.
  • It relates to a guide device for generating a Vordralls in the intake of a compressor and an exhaust gas turbocharger with such Vordrait Leitvomchtung.
  • Exhaust gas turbochargers are used to increase the performance of internal combustion engines. In modern internal combustion engines, the adaptation of the exhaust gas turbocharger to variable operating conditions will become more difficult.
  • a widely used option is the so-called variable turbine and / or compressor geometry.
  • the stator vanes are aligned more or less steeply with the flow upstream of the turbine wheel in accordance with turbine power requirements.
  • the vanes in the diffuser downstream of the compressor wheel are aligned more or less steeply to the flow.
  • Vordra !! guideways Another option for adapting the exhaust gas turbocharger to the variable operating conditions is provided by Vordra !! guideways, which generate a certain pre-whirl in the air intake area of the compressor in the intake air, depending more or less depending on the operating point with or against the direction of rotation of the compressor wheel.
  • Vordrall Leitvorfichtungen such as those from the DE 36 13 857 A1 are known
  • the blades are stored in a one-piece housing in the storage area.
  • the bucket must be secured with an additional bearing bush and the adjusting lever must be separable for reasons of assembly. This can be additional Lead to cost and tolerance errors and significantly reduce reliability in operation.
  • the object of the present invention is to provide a reliably operating over a long service life, easy to install Vordrall left device with adjustable vanes.
  • the inventive predrirl guide device further comprises a coaxial with the shaft axis of the compressor arranged, pivotable about this axis collar, and adjusting lever for transmitting torque from the adjusting ring on the blade shank of each vane.
  • vane shank and adjusting lever of each vane are formed in one piece.
  • the one-piece design of the vane reduces the number of components to be mounted. This simplifies the assembly and any service work on the guide.
  • the housing of the pre-whirl guide device according to the invention in which the guide vanes are rotatably mounted, comprises at least two parts which are joined together in the region of the bearings of the guide vane.
  • this makes it possible to assemble the guide vane, which is made in one piece with an integrated adjusting lever. In addition, this makes it possible to support and secure the blade with the bearing point in the axial direction with respect to the axis of rotation of each moving blade.
  • This axial bearing of the guide vanes takes place according to the invention via projections on the blade shafts and on the housing surrounding the blade shafts. These projections extend in the radial direction with respect to the axis of rotation of the guide vane. The projections engage each other for the axial storage of the guide vane. Additionally or alternatively, grooves can be embedded in the housing and / or in the blade shafts, which for axial securing of the guide vane with cooperate corresponding projections. If grooves are embedded both in the housing and the blade shafts, the axial bearing can be made with special bearing rings, which are arranged in the grooves. The grooves and protrusions may also extend only partially around the respective blade shank.
  • Fig. 1 shows a section through a guide in the intake of a compressor.
  • Such compressors are, as described above, used in exhaust gas turbochargers to increase the performance of internal combustion engines.
  • the arrows in the figure indicate the flow path of the medium to be compressed, which is usually air for the combustion process in the internal combustion engine.
  • the guide device comprises a plurality, with respect to the compressor axis aligned in the radial direction arranged guide vanes 10.
  • Each of the guide vanes comprises in addition to the projecting into the flow channel blade profile 11 a blade shank 12, with which the blade profile is rotatably mounted in a housing.
  • an adjusting lever 13 By means of an adjusting lever 13, the blade profile can be rotated about the axis of the blade shank.
  • an adjusting ring 30 is provided, which is arranged concentrically to the axis of the compressor.
  • the torque is transmitted from the adjusting ring 30 to the blade shank 12 via a arranged at the free end of the adjusting lever 13 ball head 14.
  • the ball head 14 is guided in a groove 31 of the adjusting ring with two parallel walls ,
  • the groove of the ball head has the translational and rotational freedom of movement, which are necessary to implement the torque transfer.
  • the acting for transmitting torque from the adjusting ring on the blade shank of each vane on the ball head of the lever in the manner of a Ball socket formed.
  • the ball socket is at least partially formed of a translationally displaceable sliding shoe 20. If the adjusting ring 30 is rotated for adjusting the guide vanes, then the sliding shoe 20 is displaced by the ball head 14 in the groove 31 in the plane of the groove walls. If the adjusting ring is turned away, the position of the. Versteilhebels relative to the adjusting ring. In addition to the translational displacement of the center of rotation of the ball head within the groove, there is a rotation of the adjusting lever with respect to the adjusting ring. The translational displacement of the center of rotation of the ball head is passing through the groove walls along Sliding allows while twisting the ball head in the formed by the shoe shoe ball cup can rotate in any direction in any direction.
  • the shoe may also be formed in two parts by a ball socket half is arranged with a flat, sliding back on each side of the groove in the adjusting ring.
  • the pin engages in a bore in the adjusting ring 30 also in a bore 32nd mounted, cylindrical sliding element 21 a.
  • the sliding cylinder 21 can be rotated in the bore 32 about its own axis and move along its own axis.
  • the bore in the sliding cylinder, which is provided for receiving the pin 15, is perpendicular to the axis of the sliding cylinder.
  • the pin can be rotated in this hole around its own axis and move along its own axis.
  • the pin 15 as shown in FIG. 9, fixed in the sliding cylinder 21 and be slidably mounted in a corresponding bore in the free end of the adjusting lever 13 of the guide vane.
  • the housing is divided according to the invention in the region of the bearing points of the guide vanes.
  • At least two housing parts 41 and 42 which can be joined together in the axial direction with respect to the compressor axis are provided. In the region of the bearing point of each guide vanes, the two housing parts together form the recess 45.
  • the two housing parts 41 and 42 are held together, for example, with connecting elements in holes 46 provided for this purpose or via other subsequently installed housing parts.
  • the storage of the guide vanes and the adjusting ring can be greatly simplified.
  • the blade shank in the axial direction instead of with an additional bearing bush or with outboard bearing points in a simple manner to radially projecting housing edges 49 secure.
  • These housing protrusions 49 may be provided on both sides or on a housing part in each case at the axial ends of the bearing point of the blade shank.
  • an at least partially circumferential groove in the recess between the two housing parts 41 and 42 a the blade shank also at least partially circumferential projection 17 record.
  • the groove may also be embedded in the blade shank and the housing parts may be provided with a corresponding projection.
  • a groove is embedded in a housing part while the other housing part has a projection and is provided according to the blade shank with a projection and a groove.
  • grooves are recessed both in the blade shank and in the surrounding housing. An arranged in the grooves bearing ring provides in this variant for the axial bearing of the vanes. All these variants of the internal thrust bearings allow a reduction in the axial clearance of the vanes.
  • the bearing components ie the housing parts and / or the blade shank hardened or provided with a coating of an abrasion-resistant material.
  • the axial and radial mounting of the adjusting ring also realize in a simple manner.
  • the adjusting ring 30 is arranged together with the guide vanes between the housing parts or on one of the two housing parts.
  • the final alignment of the adjusting ring in the axial direction then takes place automatically.
  • the adjusting ring 30 is supported in the axial direction from both sides by a corresponding bearing element 47 'and 47 ".
  • the first axial bearing element 47' is part of the first housing part 41, while the second axial bearing element 47" Part of the second housing part 42 is.
  • the radial bearing of the adjusting ring can be achieved in a simple manner by supporting the adjusting ring on a circumferential projection 48.
  • the bearing parts of the adjusting ring can be hardened or coated.
  • a central housing body is arranged according to an embodiment of the inventive guide device. This central body is concentric with the axis of the compressor. The central body is part of the housing which forms the flow channel of the medium to be compressed in the region of the guide device.
  • the central body 44 may be positioned and retained via one or more radially extending housing ribs 43.
  • the central body can also be positioned and held on the vane tips.
  • radially guided bores 441 are introduced into the central body 44, in which shanks 16 designed especially for this purpose engage the blade tips.
  • This device with the radially arranged around the central body vanes also allows a simplified assembly of the vanes, which can already be arranged around the central body 44 before introduction into one of the two housing parts 41 or 42. Then you can the unit of central body and all vanes are guided in a single step to the designated space.
  • corresponding bores may also be provided in the embodiment with a central body positioned and held by means of a retaining rib.
  • they also serve a simplified assembly by the guide vanes are inserted with the special blade tip shafts in the holes in the central body before they are then placed in the radially extending recesses in the one housing part.
  • the blade tip shanks described can be fixedly connected to the tips of the guide vanes, or rotatably mounted in designated holes in the blade tips.
  • the shafts may also be fixedly connected to the central body, so that during mounting the guide vanes are plugged with their holes on the blade tips on the shafts.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Supercharger (AREA)
EP06405137A 2006-03-31 2006-03-31 Vordrall-Leitvorrichtung Withdrawn EP1840386A1 (de)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP06405137A EP1840386A1 (de) 2006-03-31 2006-03-31 Vordrall-Leitvorrichtung
KR1020087023917A KR20080106955A (ko) 2006-03-31 2007-02-22 전류식 안내 장치
PCT/CH2007/000090 WO2007112601A1 (de) 2006-03-31 2007-02-22 Vordrall-leitvorrichtung
EP07701890A EP2002127B1 (de) 2006-03-31 2007-02-22 Vordrall-leitvorrichtung
CNA2007800117121A CN101415951A (zh) 2006-03-31 2007-02-22 预旋转导向装置
JP2009501808A JP2009531581A (ja) 2006-03-31 2007-02-22 プレスワール・ガイド・デバイス
DE502007002109T DE502007002109D1 (de) 2006-03-31 2007-02-22 Vordrall-leitvorrichtung
US11/727,770 US20070231125A1 (en) 2006-03-31 2007-03-28 Preswirl guide device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06405137A EP1840386A1 (de) 2006-03-31 2006-03-31 Vordrall-Leitvorrichtung

Publications (1)

Publication Number Publication Date
EP1840386A1 true EP1840386A1 (de) 2007-10-03

Family

ID=36926401

Family Applications (2)

Application Number Title Priority Date Filing Date
EP06405137A Withdrawn EP1840386A1 (de) 2006-03-31 2006-03-31 Vordrall-Leitvorrichtung
EP07701890A Expired - Fee Related EP2002127B1 (de) 2006-03-31 2007-02-22 Vordrall-leitvorrichtung

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP07701890A Expired - Fee Related EP2002127B1 (de) 2006-03-31 2007-02-22 Vordrall-leitvorrichtung

Country Status (7)

Country Link
US (1) US20070231125A1 (ko)
EP (2) EP1840386A1 (ko)
JP (1) JP2009531581A (ko)
KR (1) KR20080106955A (ko)
CN (1) CN101415951A (ko)
DE (1) DE502007002109D1 (ko)
WO (1) WO2007112601A1 (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106224013A (zh) * 2016-08-29 2016-12-14 萍乡德博科技股份有限公司 一种用于涡轮增压器的喷嘴环

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009008531A1 (de) * 2009-02-11 2010-08-12 Bosch Mahle Turbo Systems Gmbh & Co. Kg Verstellring für eine Ladeeinrichtung, insbesondere für einen Abgasturbolader eines Kraftfahrzeugs
EP2496839B1 (en) 2009-11-03 2017-01-04 Ingersoll-Rand Company Inlet guide vane for a compressor
ITBS20100021A1 (it) * 2010-02-08 2011-08-09 Ind Saleri Italo Spa Pompa di raffreddamento con gruppo valvola
JP5440277B2 (ja) * 2010-03-09 2014-03-12 株式会社Ｉｈｉ 過給機付エンジンのブローバイガス処理装置
JP5935249B2 (ja) * 2011-07-07 2016-06-15 株式会社Ihi 可変ガイドベーンの軸受装置及び過給機
JP5747703B2 (ja) 2011-07-13 2015-07-15 株式会社Ihi ターボ圧縮機
US10107296B2 (en) * 2013-06-25 2018-10-23 Ford Global Technologies, Llc Turbocharger systems and method to prevent compressor choke
CN103423198B (zh) * 2013-08-05 2016-03-02 苏州欧拉工程技术有限公司 一种进气预旋器
CN103438015B (zh) * 2013-08-05 2016-07-06 苏州欧拉工程技术有限公司 一种高效节能的双吸风机
TWI614410B (zh) * 2013-12-17 2018-02-11 財團法人工業技術研究院 進氣導葉組件
US10240480B2 (en) * 2014-11-21 2019-03-26 Borgwarner Inc. Variable turbine geometry vane with single-axle, self-centering pivot feature
US20170152860A1 (en) * 2015-11-30 2017-06-01 Borgwarner Inc. Compressor inlet guide vanes
US20180058247A1 (en) * 2016-08-23 2018-03-01 Borgwarner Inc. Vane actuator and method of making and using the same
DE102017216332A1 (de) * 2017-09-14 2019-03-14 Continental Automotive Gmbh Verdichter für eine Aufladevorrichtung einer Brennkraftmaschine und Aufladevorrichtung für eine Brennkraftmaschine
CN107989829B (zh) * 2017-12-10 2020-10-30 徐州新南湖科技有限公司 一种矿用风机保护罩
CN210122961U (zh) * 2018-11-12 2020-03-03 博格华纳公司 操纵装置、调整机构、压缩机和增压装置
KR20210124588A (ko) * 2020-04-06 2021-10-15 현대자동차주식회사 연속 가변 트림 컴프레서

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1503658A1 (de) * 1963-05-15 1970-02-19 Westinghouse Electric Corp Kreiselverdichter,insbesondere fuer Kuehlaggregate
DE2203643A1 (de) * 1972-01-26 1973-08-09 Demag Ag Leitapparat fuer turboverdichter
US4428714A (en) * 1981-08-18 1984-01-31 A/S Kongsberg Vapenfabrikk Pre-swirl inlet guide vanes for compressor
US4932206A (en) * 1988-08-17 1990-06-12 Sundstrand Corporation Guide vane assembly for auxiliary power unit

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2606713A (en) * 1948-04-26 1952-08-12 Snecma Adjustable inlet device for compressors
US4726744A (en) * 1985-10-24 1988-02-23 Household Manufacturing, Inc. Tubocharger with variable vane
DE3711224A1 (de) * 1987-04-03 1988-10-13 Gutehoffnungshuette Man Verstelleinrichtung fuer die leitschaufeln einer axialstroemungsmaschine
GB8722714D0 (en) * 1987-09-26 1987-11-04 Rolls Royce Plc Variable guide vane arrangement for compressor
US5184459A (en) * 1990-05-29 1993-02-09 The United States Of America As Represented By The Secretary Of The Air Force Variable vane valve in a gas turbine
DE4237031C1 (de) * 1992-11-03 1994-02-10 Mtu Muenchen Gmbh Verstellbare Leitschaufel
DE4309636C2 (de) * 1993-03-25 2001-11-08 Abb Turbo Systems Ag Baden Radialdurchströmte Abgasturboladerturbine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1503658A1 (de) * 1963-05-15 1970-02-19 Westinghouse Electric Corp Kreiselverdichter,insbesondere fuer Kuehlaggregate
DE2203643A1 (de) * 1972-01-26 1973-08-09 Demag Ag Leitapparat fuer turboverdichter
US4428714A (en) * 1981-08-18 1984-01-31 A/S Kongsberg Vapenfabrikk Pre-swirl inlet guide vanes for compressor
US4932206A (en) * 1988-08-17 1990-06-12 Sundstrand Corporation Guide vane assembly for auxiliary power unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106224013A (zh) * 2016-08-29 2016-12-14 萍乡德博科技股份有限公司 一种用于涡轮增压器的喷嘴环

Also Published As

Publication number Publication date
EP2002127B1 (de) 2009-11-25
JP2009531581A (ja) 2009-09-03
EP2002127A1 (de) 2008-12-17
CN101415951A (zh) 2009-04-22
KR20080106955A (ko) 2008-12-09
WO2007112601A1 (de) 2007-10-11
US20070231125A1 (en) 2007-10-04
DE502007002109D1 (de) 2010-01-07

Similar Documents

Publication Publication Date Title
EP2002127B1 (de) Vordrall-leitvorrichtung
EP1977084B1 (de) Verstellbare leitvorrichtung
EP1662094B1 (de) Leitapparat für einen Abgasturbolader sowie Abgasturbolader
EP1977085A1 (de) Verstellbare leitvorrichtung
EP1460237B1 (de) Abgasturbinengehäuse
EP2209969B1 (de) Ladeeinrichtung
DE10209484B4 (de) Turbolader für Fahrzeuge mit verbesserter Aufhängung für den Betätigungsmechanismus der variablen Düsen
WO2006060925A1 (de) Leitapparat für abgasturbine
DE102014203354B4 (de) Variable düseneinheit und variables turbinengeometrie-ladersystem
EP3073064A1 (de) Turbolader
EP2733311A1 (de) Düsenring
EP1520959B1 (de) Turbokompressor mit verstellbaren Leitschaufeln
EP2006494A1 (de) Antrieb für Vordrall-Leitvorrichtung
EP1860284A1 (de) Gehäuseverbindung
EP1998026A2 (de) Ladeeinrichtung
EP1635041B1 (de) Stelleinrichtung für Leitschaufeln eines Abgasturboladers
EP2510207B1 (de) Verstelleinrichtung für eine Aufladeeinrichtung, insbesondere für einen Abgasturbolader
DE102008020732A1 (de) Ladeeinrichtung
EP3176385B1 (de) Leitschaufelkranzgehäuse für eine strömungsmaschine und strömungsmaschine mit leitschaufelkranzgehäuse
EP3176386A1 (de) Innenringsystem, zugehöriger innenring, zwichengehäuse und strömungsmaschine
DE102008000508A1 (de) Abgasturbolader mit verstellbarer Turbinengeometrie
EP1574673B1 (de) Leitgitter variabler Geometrie und Turbolader mit einem solchen Leitgitter
DE102004031986B4 (de) Abgasturbolader für eine Brennkraftmaschine
DE102004023211A1 (de) Abgasturbolader für eine Brennkraftmaschine mit variabler Turbinengeometrie
DE102011080995A1 (de) Turbine mit variabler Geometrie und deren Montage

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 HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

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

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Effective date: 20080318