EP1657428B1 - Dispositif d'injection de carburant - Google Patents

Dispositif d'injection de carburant Download PDF

Info

Publication number
EP1657428B1
EP1657428B1 EP05106765A EP05106765A EP1657428B1 EP 1657428 B1 EP1657428 B1 EP 1657428B1 EP 05106765 A EP05106765 A EP 05106765A EP 05106765 A EP05106765 A EP 05106765A EP 1657428 B1 EP1657428 B1 EP 1657428B1
Authority
EP
European Patent Office
Prior art keywords
pressure
damping
fuel
space
chamber
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
EP05106765A
Other languages
German (de)
English (en)
Other versions
EP1657428A1 (fr
Inventor
Hans-Christoph Magel
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1657428A1 publication Critical patent/EP1657428A1/fr
Application granted granted Critical
Publication of EP1657428B1 publication Critical patent/EP1657428B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • F02M57/00—Fuel-injectors combined or associated with other devices
    • F02M57/02—Injectors structurally combined with fuel-injection pumps
    • F02M57/022—Injectors structurally combined with fuel-injection pumps characterised by the pump drive
    • F02M57/025—Injectors structurally combined with fuel-injection pumps characterised by the pump drive hydraulic, e.g. with pressure amplification
    • F02M57/026—Construction details of pressure amplifiers, e.g. fuel passages or check valves arranged in the intensifier piston or head, particular diameter relationships, stop members, arrangement of ports or conduits
    • 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
    • F02M57/00—Fuel-injectors combined or associated with other devices
    • F02M57/02—Injectors structurally combined with fuel-injection pumps
    • F02M57/022—Injectors structurally combined with fuel-injection pumps characterised by the pump drive
    • F02M57/025—Injectors structurally combined with fuel-injection pumps characterised by the pump drive hydraulic, e.g. with pressure amplification
    • 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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
    • F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
    • F02M59/105—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive hydraulic drive

Definitions

  • the invention relates to a device for injecting fuel into a combustion chamber of an internal combustion engine with a fuel injector, according to the features of the preamble of claim 1.
  • a fuel injection device with a fuel injector with the features of the preamble is made WO 2004/088122 A1 and WO 2004/003377 A1 out.
  • the fuel injector in this case has an injection valve member with a nozzle needle, a pressure booster with a pressure booster piston and a metering valve device, wherein the pressure booster is controlled by means of the metering valve device.
  • the pressure intensifier piston is exposed to a pressure booster working space, a pressure booster control chamber and a pressure booster pressure space.
  • the injection valve member is exposed by means of a rear pressure surface of a nozzle spring chamber, which communicates via a control line, which includes a throttle, with the pressure booster control chamber.
  • a hydraulic connection leads to a pressure shoulder formed on the nozzle needle, which points the nozzle needle in the direction of the nozzle spring chamber in the opening direction.
  • a hydraulic filling path with a check valve leads from Nozzle spring chamber in the pressure booster pressure chamber.
  • One of the nozzle needle associated damping piston is exposed to a damping chamber which is hydraulically connected via a guided through the damping piston damping and filling path with the nozzle spring chamber, by actuation of the metering valve means the pressure intensifier control chamber is relieved in a low pressure / return system, so that on an opposite surface of the Pressure intensifier piston attacking system pressure pushes the pressure intensifier piston with its smaller area in the pressure booster pressure chamber.
  • EP 1598 551 A2 known fuel injector performs a connected to the pressure booster control chamber control line directly into a damping chamber, from which a hydraulic connection with a nozzle control chamber is realized via a damping path.
  • a device for injecting fuel into a combustion chamber of an internal combustion engine with a fuel injector known which can be acted upon by a high-pressure source with high-pressure fuel and actuated via a metering valve.
  • An injection valve member which is acted upon in the closing direction by a closing force, is enclosed by a pressure chamber.
  • the injection valve member is associated with a independently movable damping element which defines a damping chamber and at least one overflow channel for connecting the damping chamber with another hydraulic. Has room.
  • the damping element may be formed as a damping piston, which is surrounded by the other hydraulic space.
  • the damping chamber which may be bounded by a separate damping piston or the injection valve member, and the damping path with the damping throttle are also referred to as damping module.
  • damping module In the context of the present invention, it has been found that during operation of the fuel injector, the temperature in the damping module increases.
  • the temperature increase in the damping module can be attributed to the compression of the fuel volume enclosed in the damping chamber and the expansion losses in the damping throttle.
  • the increased temperature in the damping module can lead to variable damping properties and to unstable injector behavior.
  • Object of the present invention is to make arrangements so that the heated fuel for the reasons mentioned does not remain in the damping module.
  • the damping room which may be limited by a separate damping piston or the injection valve member, and the damping path with the damping throttle are also referred to as damping module.
  • damping module In the context of the present invention, it has been found that during operation of the fuel injector, the temperature in the damping module increases. The temperature increase in the damping module can be attributed to the compression of the fuel volume enclosed in the damping chamber and the expansion losses in the damping throttle. The increased temperature in the damping module can lead to variable damping properties and to unstable injector behavior.
  • the inventive connection of the damping path to the filling path is achieved that the displaced from the damping chamber, heated fuel passes in the next filling of the pressure booster pressure chamber via the filling path in the pressure booster pressure chamber and is injected in sequence. The heated fuel thus does not remain in the damping module.
  • conduit is used synonymously with the term flow connection means. That is, a line according to the invention may also be a bore or a channel.
  • the damping path is significantly shorter than the filling path, in particular as the filling path section.
  • a preferred embodiment of the fuel injection device is characterized in that the damping chamber is delimited by a damping piston having a Dämpfungsraum spallpfad over which the damping chamber is filled.
  • the damping chamber fill path independent of the damping path ensures that the damping chamber is filled with new, cold fuel. This ensures a good flushing of the damping chamber.
  • Further preferred embodiments of the fuel injection device are characterized in that the metering valve device and / or the injection valve member and / or the pressure intensifier piston is / are integrated in the fuel injector. This creates a compact, multifunctional injector.
  • FIG. 1 is a longitudinal section through a common rail injector 1 shown, which is supplied via an only schematically indicated high-pressure accumulator chamber 2 with high pressure fuel.
  • the high-pressure storage space 2 is also referred to as a common rail or as a high-pressure fuel source.
  • a fuel supply line 3 extends to a pressure booster 5, which is also referred to as a pressure booster and is integrated into the fuel injector 1.
  • the pressure booster 5 is enclosed by an injector 6, which in the FIGS. 1 and 2 is indicated only schematically.
  • the injector housing 6 comprises an injector body 7, from which in the FIGS. 1 and only the interior is shown, and a nozzle body 8 having a central guide bore 9.
  • an injection valve member 10 is guided reciprocally movable, which is also referred to as a nozzle needle.
  • the nozzle needle 10 has a tip 11, on which a sealing surface is formed, which cooperates with a sealing seat, which is formed at the projecting into the combustion chamber end of the nozzle body 8.
  • a sealing seat which is formed at the projecting into the combustion chamber end of the nozzle body 8.
  • a metering valve device 12 which in turn is controlled by a solenoid valve.
  • the metering valve device 12 is a 3/2-way valve, which is integrated in the fuel injector 1.
  • a pressure shoulder 14 is formed, which is arranged in the nozzle body 8 in a pressure chamber 15, which is also referred to as Einspritzventilglieddruckraum.
  • the nozzle needle 10 is biased by a nozzle spring 16 with its tip 11 against the associated nozzle needle seat.
  • the nozzle spring 16 is received in a nozzle spring chamber 17 which is recessed in the injector body 7.
  • the pressure chamber 15 is connected via a connecting channel 18 with a pressure booster pressure chamber 22 in connection.
  • the pressure booster pressure chamber 22 is formed by a portion of a central bore in the injector body 7, which is formed as a blind bore toward the combustion chamber. At its combustion chamber remote end, the bore expands to form a pressure booster control chamber 23. In the blind bore, an end 24 of a pressure booster piston 25 is received reciprocally movable.
  • the end 24 of the pressure booster piston 25 has the shape of a circular cylinder, which has a smaller diameter than a subsequent collar 21 of the pressure booster piston 25. From the combustion chamber distant end face of the collar 21 protrudes a punch 20, at the end of a spring plate 19 is formed in a pressure booster working space 26, which is connected via the fuel supply line 3 with the high-pressure fuel source 2 in conjunction.
  • the pressure intensifier pressure chamber 22 is limited by the combustion chamber near the end of the circular cylinder 24 of the booster piston 25.
  • the pressure intensifier control chamber 23 has the shape of an annular space which extends around the circular cylinder 24 in the injector body 7 and is limited by the combustion chamber near end face of the collar 21 of the pressure intensifier piston 25.
  • the combustion chamber-remote end face of the collar 21 of the pressure booster piston 25 limits the pressure booster working space 26.
  • a nozzle spring 27 is clamped by the combustion chamber distal end of the pressure booster piston 25 is biased against the injector.
  • the pressure booster control chamber 23 communicates with the nozzle spring chamber 17 via a control line 28, in which a throttle 29 is provided.
  • the pressure booster control chamber 23 is connected via a connecting line 30 and the metering valve 12 and the supply line 3 to the high-pressure accumulator 2 in connection.
  • the pressure booster piston 25 is pressure balanced and the injector 1 is in the idle state.
  • the connecting line 30 When the metering valve 12 is brought to its second position, the connecting line 30 is brought into communication with a return line 31, which communicates with a low pressure area.
  • a connecting line 32 From the control line 28 is a connecting line 32, in which a check valve 34 is disposed, and in the connecting channel 18 opens, which is in communication with the pressure booster pressure chamber 22.
  • the pressure booster pressure chamber 22 Via the connecting line 32 and the check valve 34, the pressure booster pressure chamber 22 is filled with fuel from the high-pressure reservoir 2.
  • the check valve 34 prevents a backflow of fuel from the pressure booster pressure chamber 22nd
  • a connecting line with a throttle 36 leads into an injection valve member control chamber 38 which is delimited in the nozzle body 8 by the combustion chamber distal end 41 of a damper piston 42.
  • the combustion chamber near end 43 of the damper piston 42 is formed spherical and is located at the combustion chamber remote end of the nozzle needle 10 at.
  • a central through-bore 45 with a throttle in the damper piston 42 is closed.
  • the damper piston 42 is pressed by the nozzle spring 16 with its combustion chamber near end 43 against the combustion chamber distal end of the nozzle needle 10.
  • a damping path in which the throttle 36 is arranged designated 46.
  • the damping path 46 opens into the connecting line 32 which extends between the check valve 34 and the control line 28.
  • a filling path for the pressure booster pressure chamber 22 is in FIG. 1 denoted by 47.
  • FIG. 1 shown fuel injector 1 is controlled via the 3/2-way valve 12.
  • the pressure booster control chamber 23 is acted upon via the connecting line 30 and the metering valve 12 with the same system pressure as the pressure booster working chamber 26.
  • the connection to the return 31 is closed.
  • the intensifier piston unit 25 is pressure compensated and there is no pressure boosting.
  • the nozzle needle 10 is closed.
  • the pressure booster control chamber 23 is depressurized.
  • the pressure booster control chamber 23 is decoupled from the pressure source 2 and relieved of pressure via the connecting line 30 in the return 31.
  • the pressure in the pressure booster pressure chamber 22 is thereby increased according to the transmission ratio of the pressure booster 25 and forwarded via the connecting line 18 into the pressure chamber 15 at the nozzle needle 10.
  • the nozzle needle 10 begins to open, taking fuel must be displaced from the damping chamber 38 via the throttle 36. This reduces the needle opening speed.
  • the fuel which is heated in the damping path 46 during the expansion via the throttle 36 is conducted into the filling path 47 in front of the check valve 34.
  • the pressure booster control chamber 23, which is also referred to as the back space of the pressure booster piston 25, is depressurized, the pressure booster 25 remains activated and compresses the fuel in the pressure booster pressure chamber 22.
  • the compressed fuel is forwarded to the nozzle needle 10 and injected.
  • the injection is separated by the control valve 12, which is also referred to as a metering valve, the rear space 23 from the return line 31 and acted upon by the supply pressure of the high-pressure fuel source 2.
  • the control valve 12 which is also referred to as a metering valve
  • 23 rail pressure builds up in the connecting line 30 and the rear space.
  • the pressure in the pressure booster pressure chamber 22 and the pressure chamber 15 drops to rail pressure.
  • the nozzle needle 10 closes. In this case, the nozzle needle 10 separates from the damping piston 42 and performs a fast closing movement.
  • the damping piston 42 is then reset by the nozzle spring 16.
  • the damping chamber 38 is filled via the central through-bore 45, which is also referred to as Dämpfungsraum spallpfad, and the open sealing seat between the damping piston 42 and the nozzle needle 10.
  • the Dämpfungsraum spallpfad 45 is so to the control line 28 that it is filled with new, cold fuel. This results in a forced flushing of the damping chamber 38th
  • the pressure booster piston 25 is returned by the pressure booster spring 27 in its initial position, wherein the pressure booster pressure chamber 22 is filled via the filling path 47 with the check valve 34.
  • This filling flow is designed so that thereby the heated amount from the damping chamber 38 and the damping path 46 is conveyed into the pressure booster pressure chamber and injected in sequence.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Claims (3)

  1. Installation pour injecter du carburant dans la chambre de combustion d'un moteur à combustion interne comportant un injecteur de carburant (1) recevant du carburant mis à une pression élevée par une source de haute pression de carburant (2) et actionnée par une installation de soupape de dosage (12) qui commande la pression dans une chambre de commande d'amplification de pression (23) pour que la pression dans une chambre d'amplification de pression (22) délimitée par un piston amplificateur de pression (25), chambre qui reçoit du carburant de la source de carburant à haute pression (2) par l'intermédiaire d'un chemin de remplissage (47) équipé d'un clapet antiretour (34), et qui communique avec une chambre de pression (15) d'aiguille d'injecteur qui soulève le piston amplificateur de pression (25) pour ouvrir l'aiguille d'injecteur (10) et injecter du carburant,
    la chambre de commande d'amplification de pression (23) étant reliée par une conduite de commande (28) qui comporte un organe d'étranglement (29) et est reliée par l'installation de soupape de dosage (12) à la source de carburant à haute pression (2) et à une chambre à ressort de buse (17),
    une chambre d'amortissement (38) étant prévue à partir de laquelle du carburant est refoulé par un chemin d'amortissement (46) équipé d'une soupape d'amortissement (36),
    le chemin d'amortissement (46) débouchant dans un chemin de remplissage (47), et
    le chemin d'amortissement (46) étant relié au chemin de remplissage (47),
    caractérisée en ce que
    le chemin de remplissage (47) débouche dans une conduite de liaison (32) passant entre le clapet antiretour (34) et la conduite de commande (28) de façon que le carburant refoulé de la chambre d'amortissement (38) au moment d'une opération d'injection à travers l'organe d'étranglement d'amortissement (36), arrive par le chemin d'amortissement (46) dans le chemin de remplissage (47) de la chambre d'amplification de pression (22).
  2. Installation d'injection de carburant selon la revendication 1,
    caractérisée en ce que
    la chambre d'amortissement (38) est délimitée par un piston d'amortissement (42) comportant un chemin de remplissage de la chambre d'amortissement (45) par lequel on remplit la chambre d'amortissement (38).
  3. Installation d'injection de carburant selon la revendication 1 ou 2,
    caractérisée en ce que
    l'installation à soupape de dosage (12) et/ou l'aiguille d'injecteur (10) et/ou le piston amplificateur de pression (25) sont intégrés dans l'injecteur de carburant (1).
EP05106765A 2004-11-04 2005-07-22 Dispositif d'injection de carburant Not-in-force EP1657428B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004053274A DE102004053274A1 (de) 2004-11-04 2004-11-04 Kraftstoffeinspritzeinrichtung

Publications (2)

Publication Number Publication Date
EP1657428A1 EP1657428A1 (fr) 2006-05-17
EP1657428B1 true EP1657428B1 (fr) 2008-11-26

Family

ID=35429454

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05106765A Not-in-force EP1657428B1 (fr) 2004-11-04 2005-07-22 Dispositif d'injection de carburant

Country Status (3)

Country Link
US (1) US7171951B2 (fr)
EP (1) EP1657428B1 (fr)
DE (2) DE102004053274A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004017305A1 (de) * 2004-04-08 2005-10-27 Robert Bosch Gmbh Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen mit direkt ansteuerbaren Düsennadeln
US7293547B2 (en) * 2005-10-03 2007-11-13 Caterpillar Inc. Fuel injection system including a flow control valve separate from a fuel injector
DE102006062491A1 (de) * 2006-12-28 2008-07-03 Robert Bosch Gmbh Vorrichtung zur Dosierung von Kraftstoff zum Abgassystem eines Verbrennungsmotors
DE102007027667A1 (de) 2007-06-15 2008-12-18 Robert Bosch Gmbh Injektor mit Druckverstärker und Nadelhubsteuerung über DV-Kolben
US20090057438A1 (en) * 2007-08-28 2009-03-05 Advanced Propulsion Technologies, Inc. Ultrasonically activated fuel injector needle
US7578283B1 (en) 2008-06-30 2009-08-25 Caterpillar Inc. System for selectively increasing fuel pressure in a fuel injection system
US20100096473A1 (en) * 2008-10-20 2010-04-22 Caterpillar Inc. Variable flow rate valve for mechnically actuated fuel injector
EP2478210A4 (fr) * 2009-09-17 2013-06-05 Int Engine Intellectual Prop Injecteur-pompe a haute pression
CN106089522B (zh) * 2016-07-29 2018-11-06 中国北方发动机研究所(天津) 一种电控喷油器

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10229412A1 (de) * 2002-06-29 2004-01-29 Robert Bosch Gmbh Kraftstoffinjektor mit Druckübersetzer für Mehrfacheinspritzung
DE10229415A1 (de) * 2002-06-29 2004-01-29 Robert Bosch Gmbh Einrichtung zur Nadelhubdämpfung an druckgesteuerten Kraftstoffinjektoren
US7320310B2 (en) * 2003-04-02 2008-01-22 Robert Bosch Gmbh Fuel injector provided with provided with a pressure transmitter controlled by a servo valve
DE10315015B4 (de) * 2003-04-02 2005-12-15 Robert Bosch Gmbh Kraftstoffinjektor mit Druckverstärker und Servoventil mit optimierter Steuermenge
DE10335059A1 (de) * 2003-07-31 2005-02-17 Robert Bosch Gmbh Schaltventil für einen Kraftstoffinjektor mit Druckübersetzer
DE102004024527A1 (de) * 2004-05-18 2005-12-15 Robert Bosch Gmbh Kraftstoffeinspritzeinrichtung

Also Published As

Publication number Publication date
EP1657428A1 (fr) 2006-05-17
DE502005006051D1 (de) 2009-01-08
US20060090734A1 (en) 2006-05-04
US7171951B2 (en) 2007-02-06
DE102004053274A1 (de) 2006-05-11

Similar Documents

Publication Publication Date Title
EP1657428B1 (fr) Dispositif d'injection de carburant
EP1598551B1 (fr) Dispositif d'injection de carburant
EP1577538B1 (fr) Dispositif d'injection de combustible pour des moteurs à combustion interne avec amortissement de la levée de l'aiguille
EP1654456B1 (fr) Dispositif d'injection de carburant pour moteur a combustion interne
WO2004003374A1 (fr) Systeme a rampe commune comprenant une buse variable et un systeme multiplicateur de pression
EP1584813A2 (fr) Injecteur pour moteur à combustion avec une aiguille d'injection contrôlée directement
EP1520099B1 (fr) Injecteur de carburant a multiplicateur de pression a reduction de pression rapide lors de l'injection
EP1520100B1 (fr) Dispositif permettant d'amortir la course de l'aiguille sur des injecteurs de carburant commandes par pression
EP1865192B1 (fr) Injecteur de carburant doté d'une assistance adaptative à la direction
DE102005030220A1 (de) Injektor mit zuschaltbarem Druckübersetzer
DE10335059A1 (de) Schaltventil für einen Kraftstoffinjektor mit Druckübersetzer
EP1558843B1 (fr) Systeme d'injection de carburant pour moteurs a combustion interne
EP1117921B1 (fr) Injecteur de carburant pour un système carburant à rampe commune
DE102004015744A1 (de) Common-Rail-Injektor
EP1872008B1 (fr) Injecteur de carburant s'ouvrant a deux niveaux
DE102005032464A1 (de) Kraftstoffinjektor mit Vorsteuerraum
WO2004022929A1 (fr) Actionneur hydraulique de soupape servant a actionner une soupape d'echange de gaz
EP1541859B1 (fr) Injecteur
EP1655477B1 (fr) Servo-valve électro-hydraulique
EP1908953B1 (fr) Dispositif d'injection de carburant
EP1907686B1 (fr) Injecteur de carburant
DE10251932A1 (de) Kraftstoffeinspritzeinrichtung mit integriertem Druckverstärker
DE10315489B3 (de) Kraftstoffinjektor mit Druckübersetzer und in ein Düsenmodul integriertem Dämpfungskolben
DE10132248A1 (de) Kraftstoffinjektor mit 2-Wege-Ventilsteuerung
DE102018200565A1 (de) Injektor zur Dosierung von gasförmigem Kraftstoff, Gaseinblassystem mit einem solchen Injektor und Verfahren zum Betreiben dieses Injektors

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

17P Request for examination filed

Effective date: 20061117

17Q First examination report despatched

Effective date: 20061214

AKX Designation fees paid

Designated state(s): DE FR GB IT

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 502005006051

Country of ref document: DE

Date of ref document: 20090108

Kind code of ref document: P

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20090827

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20090722

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20100331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090722

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100202

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090722