EP1167729B1 - Actionneur piézo-électrique pour injecteur - Google Patents

Actionneur piézo-électrique pour injecteur Download PDF

Info

Publication number
EP1167729B1
EP1167729B1 EP00113992A EP00113992A EP1167729B1 EP 1167729 B1 EP1167729 B1 EP 1167729B1 EP 00113992 A EP00113992 A EP 00113992A EP 00113992 A EP00113992 A EP 00113992A EP 1167729 B1 EP1167729 B1 EP 1167729B1
Authority
EP
European Patent Office
Prior art keywords
actuator
terminal voltage
voltage
coupler
fuel
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.)
Expired - Lifetime
Application number
EP00113992A
Other languages
German (de)
English (en)
Other versions
EP1167729A1 (fr
EP1167729B2 (fr
Inventor
Jürgen BOSS
Johannes-Joerg Rueger
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8169130&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1167729(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to DE50009866T priority Critical patent/DE50009866D1/de
Priority to EP00113992A priority patent/EP1167729B2/fr
Publication of EP1167729A1 publication Critical patent/EP1167729A1/fr
Publication of EP1167729B1 publication Critical patent/EP1167729B1/fr
Application granted granted Critical
Publication of EP1167729B2 publication Critical patent/EP1167729B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/20—Output circuits, e.g. for controlling currents in command coils
    • F02D41/2096—Output circuits, e.g. for controlling currents in command coils for controlling piezoelectric injectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/22—Safety or indicating devices for abnormal conditions
    • F02D41/221—Safety or indicating devices for abnormal conditions relating to the failure of actuators or electrically driven elements

Definitions

  • the invention relates to a method for operating a Injector for fuel in which a piezoelectric actuator via a hydraulic coupler a Closing member drives. It continues to refer to one Fuel injection system with a number of such Injectors.
  • a fuel injection system As an essential ingredient can in one Internal combustion engine for introducing the fuel into the combustion chambers of the cylinder a fuel injection system be used.
  • a fuel injection system usually includes a number of injectors, the individually or in the manner of a so-called common-rail system (CR systems) via a central Supply system are fueled with fuel.
  • CR systems common-rail system
  • each injector is usually in a respective associated injection valve integrated over the fuel injection in a predetermined manner is adjustable.
  • the injection valves can be used for an electrical Control be provided with a piezoelectric actuator.
  • Such injection valve for the Fuel injection into the combustion chamber of a Internal combustion engine with a high pressure system or CR system is known from DE 197 328 02.
  • This injector is designed in a double-switching manner and has a Closure member, which is in one of two alternative Valve seats are each located in a closed position and thereby causing the injector to close. In a Middle position between the two valve seats takes that Closing member, however, an opening position.
  • the Closing member via a piezoelectric actuator drivable.
  • the piezoelectric Actuator charged to a drive voltage from the pressure in Common rail system is dependent. Due to the Drive voltage expands the actuator in the longitudinal direction. This length expansion is via a hydraulic coupler transferred to the closure member, so that on the one hand the amplified by the actuator hub is amplified and on the other hand the Closing member of a possible static Temperature expansion of the actuator is decoupled.
  • a charge of the piezoelectric actuator thus causes via the hydraulic coupler a transfer of Verschgresgliedes first from the first closed position in the Opening position and then from the opening position in the second closed position.
  • a discharge of the piezoelectric actuator due to the associated Contraction in the longitudinal direction via the hydraulic coupler a transfer of Verschnovgliedes first of the second closed position in the open position and then from the open position to the first closed position.
  • the invention is therefore based on the object, a method for operating a fuel injection system with a Number of injectors, each with a piezoelectric actuator via a hydraulic coupler a Closing member drives to specify with the one particular reliable fuel injection is guaranteed. moreover should be one for the implementation of the procedure especially appropriate fuel injection system can be specified.
  • this object is achieved according to the invention solved by after a charging process of an actuator whose Terminal voltage monitored and used to form a Diagnostic statement used for the respective injection valve is, with the diagnosis statement based on the temporal decline the terminal voltage after completion of the charging process is formed.
  • the invention is based on the consideration that the Fuel injection system in terms of Fuel injection operated particularly reliable can be done by providing direct and timely monitoring of the Valve lift the injectors is made. This will be promptly, that is, during or immediately after the current one Injection cycle, one for each injector Diagnosis statement made regarding its valve lift. Like yourself Surprisingly enough, this can be done as appropriate parameters on the basis of which Diagnosis statement is formed, the temporal evolution of the Terminal voltage of the respective actuator may be provided.
  • the loading phase namely, builds in the hydraulic Coupler a pressure on, which also after completion of the Recharging acts on the piezoelectric actuator and in this case with disconnected power supply one for the Pressure conditions in the coupler and consequently also for the Implementation of the drive voltage in valve lift characteristic piezo voltage generated.
  • the Terminal voltage on the piezoelectric actuator can thus without the requirement of a further sensor as a measurement parameter for the valve behavior with regard to the implementation of Control voltage can be used in Ventilhub.
  • the monitored terminal voltage for Formation of a diagnostic statement about the level of the Coupler of the respective injection valve used is unchanged held further external conditions - depending on the Coupler located medium; in particular results in a only partial filling of the coupler with fuel (effective medium: fuel-air mixture) in others Pressure conditions as a complete filling of the Coupler with fuel as a medium.
  • the for the Pressure conditions in the coupler characteristic Terminal voltage particularly favorable for the Fill level monitoring can be used.
  • a particularly reliable diagnostic statement is included achievable by these advantageously based on the temporal drop in terminal voltage after termination of the Charging process is formed.
  • the pressure builds in the hydraulic coupler due to outflowing medium again from; this pressure drop is about monitoring the Terminal voltage at the actuator in the form of a function of Time occurring voltage reduction detectable.
  • These Voltage reduction depends to a great extent from the degree of filling in the coupler: with a fully filled coupler is a comparatively pronounced voltage dip detectable.
  • this effect is only partial filled coupler significantly lower, since in this case when charging only air or an air-fuel mixture was compressed.
  • the diagnosis statement is based on a comparison of the difference from a first measured value for the terminal voltage immediately after the end of the Charging and a second reading for the Terminal voltage after expiry of a waiting time with a Limit formed.
  • the waiting time can be a solid Value of advantageously be given about 0.25 ms.
  • the waiting time but also depending on parameters characteristic of the injection cycle, such as For example, the driving time or the duration of a Splash break between two injections can be selected.
  • the waiting time can be chosen such that the second measured value immediately before a following Control intervention, such as an increase in Drive voltage, is determined.
  • the diagnosis statement is made directly for a correction intervention in the fuel injection system used. This is especially in finding a simple error based on the diagnostic statement a setpoint for the drive voltage of the respective actuator for a predetermined injection cycle, wherein the setpoint chosen so that, despite the noted not sufficient filling of the coupler after activation of the provided valve lift results.
  • the advantages achieved by the invention are in particular in that by evaluating the terminal voltage on simple way and without additional design effort a timely and reliable diagnosis and Function monitoring of each individual injection valve is possible.
  • the fuel injection system can thus especially reliable operated, with minor deviations corrective action immediately, for example with regard to a Tracking the drive voltage for each actuator, can be made.
  • the injection valve 1 of Figure 1 has a piezoelectric actuator 2, which has a number of comprises piezoelectric elements 4 connected in series.
  • the Actuator 2 is on the one hand with a housing wall 6 through which Terminals 7 of the actuator 2 are passed, and on the other hand with a servo piston 8 frictionally connected.
  • the actuating piston 8 closes with its from the actuator. 2 facing away from face 9 a hydraulic coupler 10 from.
  • the hydraulic coupler 10 in turn acts on a in a connecting channel 12 guided actuator piston 14, on whose end facing away from the coupler 10 end a closing member 16 is arranged.
  • This is as double-closing Control valve formed. It closes in a first Closed position, the rest position of the actuator. 2 corresponds to a first valve seat 18 of a valve chamber 20. In a second closed position, the maximum Actuation of the actuator 2 corresponds closes the Closing member 16, however, a second valve seat 22 of the Valve chamber 20.
  • Valve chamber 20 connected to a guide channel 24, the On the input side via a connecting piece 26 to a not illustrated pressure channel of a common rail fuel supply system of a motor vehicle connected.
  • a nozzle needle 28 arranged, which has a fuel spout 30 of the Connecting piece 26 branching fuel channel 32 dependent from one via the terminals 7 to the actuator. 2 applied drive voltage Ua releases or closes.
  • the injection valve 1 is, together with others Injectors 1, part of a fuel injection system 40, as shown schematically in Figure 2. there are the injection valves 1, of which in FIG For clarity, only four are shown, Fuel side to a common supply line 42nd connected.
  • the number of for the Fuel injection system 40 provided injectors depends on the further requirements of the supplying internal combustion engine, in particular, a Injector 1 for each cylinder to be fed be provided.
  • a central Control unit 44 For electrical control of the injectors 1 includes the fuel supply system 40 a central Control unit 44. This in turn has a control module 46th on, via lines 48 to the terminals 7 of the Injectors 1 is connected switched off. Farther the control unit 44 comprises a diagnostic unit 50 which a number of the injectors 1 respectively assigned and connected to their terminals 7 Voltage measuring 52 is connected. In addition, points the control unit 44 has a data storage module 54.
  • a high pressure which at a Common rail system, for example, between 200 and 1800 bar can amount. This pressure acts against the nozzle needle 28 and keeps it closed so that through the fuel spill 30 no fuel can escape. But if now as a result of applied to the actuator 2 control voltage Ua the Closing member 16 from the first valve seat 18 to the second Valve seat 22 or vice versa is moved, then the builds Pressure in the high pressure region of the guide channel 24 from, so that the nozzle needle 28 in the direction of the valve chamber 20th recedes and releases the fuel outlet 30. In In this case, a fuel injection takes place in the associated cylinder.
  • the determined difference of the terminal voltages Uk is less than the limit value, so as a diagnosis to a Inadequate refilling of the coupler 10 is closed.
  • another comparison of the difference of Terminal voltages Uk with a second limit or Minimum value made.
  • This comparison is still a distinction according to the effects of the error made: falls below the difference of Terminal voltages Uk also the second, even lower Limit value or minimum value, then a "fatal error" diagnosed, for example, an immediate shutdown of the internal combustion engine triggers. Is the difference of Although terminal voltages Uk below the first, but above the second limit, it becomes easier Error diagnosed, although the continued operation of the Internal combustion engine allowed, but for later Diagnostic purposes in the data storage module 54 is deposited.
  • Upon detection of a simple error in the Diagnostic unit 50 is also a setpoint for the Drive voltage Ua of the respective actuator 2 for a predetermined injection cycle, wherein the setpoint chosen so that, despite the noted not sufficient filling of the coupler 10 after a Activation of the proposed valve results.

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 (9)

  1. Procédé de fonctionnement d'un système d'injection de carburant (40) comportant un certain nombre d'injecteurs (1), dans lesquels respectivement un actionneur piézoélectrique (2) pousse un organe de fermeture (16) par le biais d'un coupleur hydraulique (10),
    selon lequel
    la tension de serrage (Uk) d'un actionneur (2) est contrôlée après un processus de charge de celui-ci et utilisée pour la formation d'un message de diagnostic pour l'injecteur respectif (1), le message de diagnostic étant formé à l'aide de la diminution dans le temps de la tension de serrage (Uk) après la fin du processus de charge.
  2. Procédé selon la revendication 1,
    selon lequel
    un message de diagnostic relatif au niveau de remplissage du coupleur (10) de l'injecteur respectif (1) est formé à l'aide de la tension de serrage (Uk) contrôlée.
  3. Procédé selon la revendication 2,
    selon lequel
    la différence entre la tension de serrage (Uk) mesurée immédiatement après la fin du processus de charge et la tension de serrage (Uk) mesurée après écoulement d'un temps d'attente prédéterminé, est comparée à une valeur limite.
  4. Procédé selon la revendication 3,
    selon lequel
    en fonction de la différence entre la tension de serrage (Uk) mesurée immédiatement après la fin du processus de charge et la tension de serrage (Uk) mesurée après écoulement d'un temps d'attente prédéterminé, on prédétermine une valeur de consigne pour la tension de commande (Ua) de l'actionneur respectif (2) pour un cycle d'injection ultérieur.
  5. Procédé selon la revendication 3 ou 4,
    selon lequel
    on choisit en tant que temps d'attente un temps d'environ 0,25 ms à partir de la fin du processus de charge.
  6. Procédé selon l'une des revendications 3 à 5,
    selon lequel
    on prédétermine en tant que valeur limite une valeur de tension fixe d'environ 25 à 30 V.
  7. Procédé selon l'une des revendications 3 à 5,
    selon lequel
    comme valeur limite on prédétermine une valeur de tension dépendante du point de fonctionnement, qui est dérivée d'une caractéristique déterminée à l'aide d'un précédent étalonnage.
  8. Système d'injection de carburant (40) comportant un certain nombre d'injecteurs (1), dans lesquels respectivement un actionneur piézoélectrique (2) pousse un organe de fermeture (16) par le biais d'un coupleur hydraulique (10), l'actionneur (2) de chaque injecteur (1) étant relié à un dispositif de mesure de tension associé (52) qui, de son côté, est raccordé du côté de la sortie à une unité de diagnostic (50),
    dans lequel des moyens prévus pour former un message de diagnostic pour l'injecteur respectif (1) à l'aide d'une diminution dans le temps d'une tension de serrage (Uk) de l'actionneur (2) après la fin d'un processus de charge de l'actionneur (2).
  9. Système d'injection de carburant (40) selon la revendication 8,
    dans lequel l'unité de diagnostic (50) est reliée à un module de stockage de données (54).
EP00113992A 2000-07-01 2000-07-01 Actionneur piézo-électrique pour injecteur Expired - Lifetime EP1167729B2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE50009866T DE50009866D1 (de) 2000-07-01 2000-07-01 Piezoelektrischer Aktor eines Einspritzventils
EP00113992A EP1167729B2 (fr) 2000-07-01 2000-07-01 Actionneur piézo-électrique pour injecteur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00113992A EP1167729B2 (fr) 2000-07-01 2000-07-01 Actionneur piézo-électrique pour injecteur

Publications (3)

Publication Number Publication Date
EP1167729A1 EP1167729A1 (fr) 2002-01-02
EP1167729B1 true EP1167729B1 (fr) 2005-03-23
EP1167729B2 EP1167729B2 (fr) 2009-09-09

Family

ID=8169130

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00113992A Expired - Lifetime EP1167729B2 (fr) 2000-07-01 2000-07-01 Actionneur piézo-électrique pour injecteur

Country Status (2)

Country Link
EP (1) EP1167729B2 (fr)
DE (1) DE50009866D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11867314B2 (en) 2018-05-31 2024-01-09 Fas Medic S.A. Method and apparatus for energising a solenoid of a valve assembly

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10239614A1 (de) 2002-08-29 2004-03-11 Robert Bosch Gmbh Verfahren zum Betreiben eines Kraftstoffeinspritzsystems, Computerprogramm sowie Steuer- und/oder Regelgerät zum Betreiben eines Kraftstoffeinspritzsystems und Brennkraftmaschine
DE10336639A1 (de) * 2003-08-08 2005-03-03 Robert Bosch Gmbh Verfahren und Vorrichtung zur Funktionsdiagnose eines Piezoaktors eines Kraftstoffzumesssystems einer Brennkraftmaschine
DE10349824A1 (de) 2003-10-24 2005-06-02 Robert Bosch Gmbh Verfahren zur Diagnose einer Kraftstoff-Einspritzvorrichtung, welche einen Piezoaktor aufweist
DE102004007798A1 (de) * 2004-02-18 2005-09-08 Robert Bosch Gmbh Verfahren und Vorrichtung zum Bestimmen der Ladeflanken eines piezoelektrischen Aktors
ES2293438T3 (es) * 2005-07-22 2008-03-16 Delphi Technologies, Inc. Procedimiento y dispositivo para controlar y analizar el funcionamiento de un actuador piezoelectrico.
DE502005002053D1 (de) * 2005-08-04 2008-01-03 Delphi Tech Inc Verfahren und Vorrichtung zum Überwachen und Beurteilen der Funktion eines piezoelektrischen Aktors
EP1860312B1 (fr) * 2006-05-23 2009-03-18 Delphi Technologies, Inc. Procédé de fonctionnement d'un injecteur à carburant
DE102008027516B3 (de) * 2008-06-10 2010-04-01 Continental Automotive Gmbh Verfahren zur Einspritzmengenabweichungsdetektion und zur Korrektur einer Einspritzmenge sowie Einspritzsystem
DE102015208436B4 (de) * 2015-05-06 2019-09-05 Continental Automotive Gmbh Überwachungsverfahren und Überwachungsvorrichtung zur Überwachung eines Füllvorgangs einer Injektoranordnung mit einem Kraftstoff und Befüllungsverfahren zum Befüllen einer Injektoranordnung

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999067527A2 (fr) * 1998-06-25 1999-12-29 Siemens Aktiengesellschaft Procede et dispositif pour commander un actionneur capacitif

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2707804B2 (ja) † 1990-06-18 1998-02-04 トヨタ自動車株式会社 圧電素子の駆動装置
DE19711903C2 (de) * 1997-03-21 1999-03-18 Siemens Ag Vorrichtung und Verfahren zum Ansteuern eines piezogesteuerten Kraftstoffeinspritzventils
DE19732802A1 (de) 1997-07-30 1999-02-04 Bosch Gmbh Robert Kraftstoffeinspritzvorrichtung für Brennkraftmaschinen
DE19733560B4 (de) * 1997-08-02 2007-04-05 Robert Bosch Gmbh Verfahren und Vorrichtung zum Laden und Entladen eines piezoelektrischen Elements
DE19804196A1 (de) * 1998-02-03 1999-08-12 Siemens Ag Verfahren zur Auswertung von Kennwerten piezo-mechanischer Systeme
US6420817B1 (en) † 2000-02-11 2002-07-16 Delphi Technologies, Inc. Method for detecting injection events in a piezoelectric actuated fuel injector

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999067527A2 (fr) * 1998-06-25 1999-12-29 Siemens Aktiengesellschaft Procede et dispositif pour commander un actionneur capacitif

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11867314B2 (en) 2018-05-31 2024-01-09 Fas Medic S.A. Method and apparatus for energising a solenoid of a valve assembly

Also Published As

Publication number Publication date
EP1167729A1 (fr) 2002-01-02
EP1167729B2 (fr) 2009-09-09
DE50009866D1 (de) 2005-04-28

Similar Documents

Publication Publication Date Title
EP1268999B1 (fr) Procede de determination de la pression de rampe d'une soupape d'injection comprenant un actionneur piezo-electrique
DE10032022B4 (de) Verfahren zur Bestimmung der Ansteuerspannung für ein Einspritzentil mit einem piezoelektrischen Aktor
DE102006047181B4 (de) Kraftstoffeinspritzsystem, das zum Gewährleisten einer verbesserten Zuverlässigkeit zum Diagnostizieren eines Ventils ausgelegt ist
EP1272754B1 (fr) Procede de diagnostic de la commande de tension pour actionneur piezo-electrique d'une soupape d'injection
DE102009018289B3 (de) Verfahren und Vorrichtung zum Betreiben eines Einspritzventils
EP1664511B1 (fr) Procede de determination de la tension de commande d'un actionneur piezoelectrique d'une soupape d'injection
EP1172541B1 (fr) Actionneur piézo-électrique pour système d'injection
EP1167729B1 (fr) Actionneur piézo-électrique pour injecteur
EP1430208A1 (fr) Dispositif d'injection de carburant destine a un moteur a combustion interne
EP1613851B1 (fr) Procede pour determiner la tension d'amorcage individuelle d'un element piezo-electrique
DE10357872A1 (de) Verfahren und Vorrichtung zur Bestimmung der Ansteuerspannung für einen piezoelektrischen Aktor eines Einspritzventils
DE102005040532B4 (de) Stromquelle und Steuervorrichtung
EP1472454B1 (fr) Procede et dispositif de detection d'etats de fonctionnement d'un ensemble pompe-gicleur
DE102015208436B4 (de) Überwachungsverfahren und Überwachungsvorrichtung zur Überwachung eines Füllvorgangs einer Injektoranordnung mit einem Kraftstoff und Befüllungsverfahren zum Befüllen einer Injektoranordnung
DE10305525A1 (de) Verfahren und Vorrichtung zur Adaption der Druckwellenkorrektur in einem Hochdruck-Einspritzsystem eines Kraftfahrzeuges im Fahrbetrieb
WO2003091559A1 (fr) Dispositif et procede pour commander le piezo-actionneur d'une soupape de commande d'une unite pompe-gicleur
DE102015217776A1 (de) Verfahren zur Erkennung einer Schädigung einer Düsennadel eines Kraftstoffinjektors oder des Düsennadelsitzes
DE10313133B3 (de) Anordnung zum Überwachen von Betriebsparametern in einem Verbrennungsmotor
DE10301822B4 (de) Verfahren zur Bestimmung der Längenausdehnung eines piezoelektrischen Aktors
DE102007061946A1 (de) Verfahren zum Betreiben einer Kraftstoff-Einspritzvorrichtung
EP1394397A2 (fr) Procédé, et appareil de commande et/ou de régulation destinés à un moteur à combustion interne
DE102006001377A1 (de) Verfahren zum Betreiben eines piezoelektrischen Aktors wenigstens eines Injektors, insbesondere einer Kraftstoffeinspritzanlage eines Kraftfahrzeugs
DE10306458A1 (de) Verfahren zur Bestimmung der Ansteuerspannung eines piezoelektrischen Aktors eines Einspritzventils
DE10304740A1 (de) Verfahren und Vorrichtung zur Bestimmung der Schaltspannung eines Piezostellers insbesondere eines Injektors einer Kraftstoffeinspritzanlage
DE10328788A1 (de) Verfahren und Vorrichtung zur Ansteuerung von Einspritzventilaktoren eines Kraftstoffzumesssytems einer Brennkraftmaschine

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): DE FR GB

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20020702

AKX Designation fees paid

Free format text: DE FR GB

17Q First examination report despatched

Effective date: 20030120

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ROBERT BOSCH GMBH

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

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: GERMAN

REF Corresponds to:

Ref document number: 50009866

Country of ref document: DE

Date of ref document: 20050428

Kind code of ref document: P

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20050804

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLAX Notice of opposition and request to file observation + time limit sent

Free format text: ORIGINAL CODE: EPIDOSNOBS2

26 Opposition filed

Opponent name: SIEMENS AG CT IP SV

Effective date: 20051223

ET Fr: translation filed
PLBB Reply of patent proprietor to notice(s) of opposition received

Free format text: ORIGINAL CODE: EPIDOSNOBS3

PLAB Opposition data, opponent's data or that of the opponent's representative modified

Free format text: ORIGINAL CODE: 0009299OPPO

PLAB Opposition data, opponent's data or that of the opponent's representative modified

Free format text: ORIGINAL CODE: 0009299OPPO

R26 Opposition filed (corrected)

Opponent name: SIEMENS AKTIENGESELLSCHAFT

Effective date: 20051223

APBM Appeal reference recorded

Free format text: ORIGINAL CODE: EPIDOSNREFNO

APBP Date of receipt of notice of appeal recorded

Free format text: ORIGINAL CODE: EPIDOSNNOA2O

APAH Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNO

APBU Appeal procedure closed

Free format text: ORIGINAL CODE: EPIDOSNNOA9O

PUAH Patent maintained in amended form

Free format text: ORIGINAL CODE: 0009272

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

Free format text: STATUS: PATENT MAINTAINED AS AMENDED

27A Patent maintained in amended form

Effective date: 20090909

AK Designated contracting states

Kind code of ref document: B2

Designated state(s): DE FR GB

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 17

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20170724

Year of fee payment: 18

Ref country code: FR

Payment date: 20170720

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20170927

Year of fee payment: 18

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50009866

Country of ref document: DE

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

Effective date: 20180701

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: 20190201

Ref country code: GB

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

Effective date: 20180701

Ref country code: FR

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

Effective date: 20180731