EP1838956A1 - Vorrichtung zur steuerung einer brennkraftmaschine - Google Patents
Vorrichtung zur steuerung einer brennkraftmaschineInfo
- Publication number
- EP1838956A1 EP1838956A1 EP05850088A EP05850088A EP1838956A1 EP 1838956 A1 EP1838956 A1 EP 1838956A1 EP 05850088 A EP05850088 A EP 05850088A EP 05850088 A EP05850088 A EP 05850088A EP 1838956 A1 EP1838956 A1 EP 1838956A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- actuator
- data
- resonant circuit
- control unit
- circuit
- 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.)
- Granted
Links
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
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
- F02D41/266—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor the computer being backed-up or assisted by another circuit, e.g. analogue
-
- 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
-
- 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
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2425—Particular ways of programming the data
- F02D41/2429—Methods of calibrating or learning
- F02D41/2432—Methods of calibration
- F02D41/2435—Methods of calibration characterised by the writing medium, e.g. bar code
-
- 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
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2425—Particular ways of programming the data
- F02D41/2429—Methods of calibrating or learning
- F02D41/2451—Methods of calibrating or learning characterised by what is learned or calibrated
- F02D41/2464—Characteristics of actuators
- F02D41/2467—Characteristics of actuators for injectors
Definitions
- the invention relates to a device for controlling an internal combustion engine according to the preamble of claim 1.
- a control unit reads data from a data carrier and used for control.
- the data carrier is assigned to at least one actuator and includes data that characterize this actuator.
- injectors which meter fuel to an internal combustion engine as a function of a drive signal have a data carrier which contains correction values with which deviations within a tolerance band of the individual injectors can be compensated. These correction data are determined at the end of the production of the injector and read into the data carrier.
- the data carrier can be designed in many different ways, for example as a barcode or as a read-only memory element.
- a system for acquiring information in which a device for storing information about the components is a data transponder arranged on the component.
- the arrangement of the data transponder directly on the component has the advantage that it can be read particularly reliable process. In particular, it is not external influences, such as oil / dirt and the like are subjected. Even contact problems on a component / reader interface, which can lead to incorrect programming, are thus excluded.
- the information stored on the data carrier or the device for storing information is read during the initial initialization of the control unit and used in later operation for controlling the internal combustion engine.
- the controllers include various functions that also determine correction values associated with an injector. Such a function is, for example, the so-called zero-quantity calibration.
- the data are usually stored only in the control unit and used to control the internal combustion engine.
- the individual injection quantity of an injector is detected at several test points. In this case, the deviation of the respective injection quantity from the desired value is determined.
- These data are placed in the Injektorfertigung in a suitable form on the injector or stored for example in the aforementioned transponder.
- the data is transmitted via suitable systems, for example via a camera system or by means of a diagnostic interface or by means of suitable readout systems for reading out transponders.
- DE 102 44 091 A1 proposes that the data carrier be formed on the injector in such a way that the control unit writes data into the data carrier. As a result, a simple exchange of the controller is possible in the event of a defect.
- the transponder is arranged on the outside of the component in order to allow the best possible data transmission. Due to this exposed position, however, there is now the risk of damaging the transponder, in particular if the component is an injector for injecting fuel, which is exposed to harsh operating conditions.
- the invention is based on the object to simplify an apparatus for controlling an internal combustion engine to the effect that with minimal installation effort a fail-safe bidirectional data transmission between the controller and the actuator, such as an injector for injecting fuel into the combustion chamber of an internal combustion engine is possible.
- the basic idea of the invention is to carry out a bidirectional data transmission between a control device and an actuator, for example an injector for fuel injection, by means of an electrical oscillating circuit, wherein the components of the oscillating circuit, inductors, capacitors and the like, in the control device and / or are arranged in the actuator, that is, for example, only in the control device or only in the actuator or distributed to the control device and the actuator are arranged.
- this is a transmission of data on properties of the injector or other data stored in data storage elements of the injector to the controller and conversely, a transfer of data from the controller to the data storage elements of the injector in an optimal manner feasible.
- the resonant circuit generates a modulated AC voltage signal which is transmitted via supply lines of the actuator.
- the resonant circuit generates a modulated AC voltage signal which is transmitted via supply lines of the actuator.
- no additional data lines, connector pins or the like are required.
- the data transmission is rather very advantageous over the supply lines, for example, the injector for fuel injection.
- the transmission of the data takes place by means of modulation of an alternating voltage signal.
- the modulation of the AC signal can be done in a variety of ways, for example by amplitude modulation, frequency modulation or by phase modulation.
- the AC signal may additionally comprise selection elements, are addressed by which selection circuits in the injectors.
- identifiers such as serial numbers or the like may be included in the data transmission signals emitted by the injectors.
- the actuators for example injectors
- the actuators are electrically connected to one of their poles and if the respective other poles are guided on switch elements inside or outside the control device-for example in paged out amplifiers-then a selection of the actuator with which data communication is to take place can be effected Switching elements or parallel arranged other switching elements are made.
- circuit arrangements are provided which prevent rectifying effects as far as possible.
- the controllers have final stage topologies that include one or more freewheeling diodes for realizing slow and / or fast freewheels of the magnetic field energy of the actuator (s) for the purpose of current regulation or energy recovery.
- parasitic antiparallel diodes in some types of transistors such as Mosfet's, or additional discrete antiparallel diodes in circuits with IGBTs (Insulated Gate Bipolar Transistors) for the sinusoidal AC signals used, which are mostly in the high frequency range, act as rectifiers and unfavorably deform the waveform the signals. This can lead to malfunction and the emission of unwanted radio frequency interference due to the harmonics contained in non-sinusoidal signals.
- the circuits for avoiding these rectifier effects can be realized, for example, that the aforementioned diode lines are selectively operated with a sufficient bias for the signal in the reverse direction. This bias voltage can be ratiometrically generated to the total supply voltage, so that the signal amplitude to improve the data transmission security and to ensure the energy transfer described in more detail below for power conditioning for the circuitry in the actuator can reach a sufficiently large value.
- the data transmission takes place in times during which no injections take place, for example, in the case of an injector. But it is also possible to carry out the data transmission when a sufficiently long time substantially constant drive signals exist. In this way, the function of the actuator, such as the injector, is not affected during data transmission. There are also no electromagnetic interference that could exceed legal limits. As a result, an accidental switching on the actuator acting as a consumer is very advantageous excluded.
- the components of the resonant circuit are preferably arranged depending on the actuators used in the control unit or in the circuit associated with the actuator.
- the subcircuits of the resonant circuit can be capacitive and / or electronic or electromechanical switch to existing power amplifier circuits of the Controller are coupled. As a result, the operation of the final stage and the actuator, such as the injector for fuel injection, not affected.
- the data transfer in the simplest case, two discrete sine frequencies or to use an on-off keying of the oscillator.
- a data transmission according to the so-called "frequency hopping" method is possible. At least two discrete frequencies are used fixedly or dynamically according to a transmission protocol. In this case, the evaluation circuits only have to evaluate the presence of the two or more frequencies changing in the rhythm of the data transmission or the on-keying of a frequency.
- the data transmission can be carried out on a wide variety of types of actuators, which are inductive, capacitive or ohmic consumers.
- the actuator is an injector with a piezoelectric actuator
- the capacitance of the actuator itself forms a component of the resonant circuit, in which case the inductance of this resonant circuit is arranged in the control unit.
- an inductance of this magnetic circuit can form a component of the resonant circuit.
- the capacitances of the resonant circuit are arranged in this embodiment in the control unit and / or in the consumer.
- an additional inductance, which is preferably arranged in the control unit, and a capacitance, which is preferably arranged in the consumer are required for the realization of a resonant circuit.
- the AC signal for optimal power supply is set to a uniform level immediately below the threshold of the actuator.
- circuitry may be provided in the actuator that amplifies the rectified AC signal. Such circuitry is required whenever the voltage is not sufficient by simple rectification to drive the data transfer circuitry and other circuitry, such as, e.g. to provide a microcontroller for data processing, data storage and control of data transmission in the consumer.
- the increase of the voltage value can be done by means of voltage multiplication, for example passively by means of diodes or actively with controlled active switches.
- a transformer can be provided to increase the voltage. In this case, the inductance of the transformer forms part of the total inductance of the resonant circuit and affects its frequency.
- the frequency of the resonant circuit and / or the ability of the resonant circuit to generate a vibration can be used very advantageously for diagnosing the functionality of the controller, in particular an output stage of the controller and / or the actuator.
- the figure shows schematically a block diagram of a device making use of the invention. Description of an embodiment
- An apparatus for controlling an internal combustion engine shown in the figure, has a control unit 100.
- the control unit 100 includes a control unit 110, which in turn includes several functions. These are inter alia a so-called quantity compensation control 112 and / or a zero quantity calibration 114.
- the control unit is connected via supply lines 130, 140 to an actuator 200.
- a resonant circuit 300 For transmitting data as well as energy from the control unit 100 to the actuator 200 and vice versa, a resonant circuit 300 is provided whose components are distributed to the control unit 100 and the actuator 200.
- a first component 150 and in the actuator 200, a second component 250 of the resonant circuit 300 are arranged in the control unit 100.
- the first component 150 in the control unit 100 may be formed for example by a capacitance and / or inductance.
- the second component 250 in the actuator 200 can be realized in a corresponding manner by an inductance or capacitance or by an ohmic load.
- the data transmission takes place to a circuit 260 in the actuator 200, which stores and / or processes the transmitted data.
- the data transmission takes place by means of modulated AC voltage signals, wherein several different types of modulation can be used.
- Modulation types that are easy to generate and evaluate are the amplitude modulation and the frequency modulation.
- Different types of phase modulation which are known per se from the telecommunications sector, can also be used.
- resonant circuit 300 is generally low in quality, frequency modulation allows for low energy consumption and simple and inexpensive circuitry.
- a reactance preferably a capacitor, is connected in parallel to the resonant circuit 300 in the control device 100 or the actuator 200 by means of an electronic switch (not shown).
- the evaluation of the frequency changes takes place by means of frequency discriminators, which are part of the circuit 260, by counting the times between zero crossings or exceeding specifiable thresholds in the signal.
- the circuit 260 may include a microcontroller. The same applies to the control unit 110 too. It can be provided that the control unit 110 simultaneously demodulates the transmitted data again, that is, receives to obtain information about the quality of the transmitted information.
- control circuit 260 sends the received data or other information, such as checksums or the like, back to the control unit 110 so as to give the control unit 100 information about the bidirectional transmission path. Namely, if there is no possibility to establish a data transmission to the actuator 200, in particular if the oscillator 300 is unable to form a vibratory structure or massive frequency errors occur, it can be concluded that the actuator 200 has an error. Thus, an indirect detection of errors of the actuator 200 is possible.
- the AC voltage signal can also be provided for supplying power to the components 250 of the oscillator 300 arranged in the actuator 200 as well as to the circuit 260 associated with the actuator 200.
- the AC signal is rectified in a suitable manner and optionally amplified.
- the rectification and gain circuit 270 is part of the circuit 260. It can also be provided to couple the component 150 of the oscillator 300 capacitively and / or via electronic or electromechanical switches to existing output stage circuits of the control unit 110 (not shown), for example. This ensures that the normal function of the final stage and the actuator 200 is not affected.
- auxiliary current sources or reverse pull-up resistors may be provided in a known manner, which generate a bias voltage. This bias is used simultaneously in actuators having piezoelectric consumers, to prevent their piezoceramics are reformed.
- the generated AC signal is a harmonic sine wave signal.
- the frequency or the frequencies resulting from the modulation are placed in a frequency range which is outside of possible interfering radio or data transmission frequency bands. As a possible frequency range, the range of 100 KHz to 140 KHz in question. The area lies below the German long-wave range and above the time signal transmitter Mainflingen. Other frequency ranges are conceivable. These are adapted to the actuators. It should be emphasized that the frequencies do not have to be kept very stable. They merely have to lie within the specified limits of the available frequency band. For this reason, the capacities of the resonant circuit 300 can be realized by inexpensive ceramic capacitors with a tolerance of ⁇ 10%.
- the device described above for the bidirectional transmission of data from the control unit 100 to the actuator 200 may also be used for a diagnosis of the actuator 200, in particular for a diagnosis of a final stage of the actuator, which is part of the control unit 110, and / or the actuator 200 become.
- the frequency of the resonant circuit 300 in the control unit 110 is evaluated and / or the ability of the resonant circuit 300 to generate a vibration for diagnosing the functionality of the control unit 110, in particular an output stage, which is part of this control unit 110, or the actuator 200 used. If the frequency deviates, for example, from a predefinable value, or the resonant circuit 300 does not oscillate generated, it is assumed that a defect of the controller 100 and / or the actuator 200.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Fuel-Injection Apparatus (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005001425A DE102005001425A1 (de) | 2005-01-12 | 2005-01-12 | Vorrichtung zur Steuerung einer Brennkraftmaschine |
PCT/EP2005/056666 WO2006074846A1 (de) | 2005-01-12 | 2005-12-12 | Vorrichtung zur steuerung einer brennkraftmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1838956A1 true EP1838956A1 (de) | 2007-10-03 |
EP1838956B1 EP1838956B1 (de) | 2009-02-11 |
Family
ID=35976563
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05850088A Not-in-force EP1838956B1 (de) | 2005-01-12 | 2005-12-12 | Vorrichtung zur steuerung einer brennkraftmaschine |
Country Status (5)
Country | Link |
---|---|
US (1) | US20080255747A1 (de) |
EP (1) | EP1838956B1 (de) |
CN (1) | CN100529371C (de) |
DE (2) | DE102005001425A1 (de) |
WO (1) | WO2006074846A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007020061B3 (de) | 2007-04-27 | 2008-10-16 | Siemens Ag | Verfahren und Datenträger zum Auslesen und/oder Speichern von injektorspezifischen Daten zur Steuerung eines Einspritzsystems einer Brennkraftmaschine |
EP2325465A1 (de) * | 2009-11-24 | 2011-05-25 | Delphi Technologies Holding S.à.r.l. | Kraftstoffeinspritzdüsen-Kommunikationssystem |
US9306723B2 (en) | 2010-02-20 | 2016-04-05 | Google Technology Holdings LLC | Multi-carrier control signaling in wireless communication system |
DE102015104107B4 (de) * | 2014-03-20 | 2019-12-05 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | Aktor mit integriertem treiber |
KR101619633B1 (ko) * | 2014-11-06 | 2016-05-11 | 현대오트론 주식회사 | 솔레노이드 밸브를 구동시키기 위한 파형 신호 출력 장치 및 방법 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5634448A (en) * | 1994-05-31 | 1997-06-03 | Caterpillar Inc. | Method and structure for controlling an apparatus, such as a fuel injector, using electronic trimming |
US5575264A (en) * | 1995-12-22 | 1996-11-19 | Siemens Automotive Corporation | Using EEPROM technology in carrying performance data with a fuel injector |
FR2804557B1 (fr) * | 2000-01-31 | 2003-06-27 | St Microelectronics Sa | Adaptation de la puissance d'emission d'un lecteur de transpondeur electromagnetique |
US6418913B1 (en) * | 2000-10-25 | 2002-07-16 | International Engine Intellectual Property Company, L.L.C. | Electric-actuated fuel injector having a passive or memory circuit as a calibration group identifier |
US6671611B1 (en) * | 2000-11-28 | 2003-12-30 | Bombardier Motor Corporation Of America | Method and apparatus for identifying parameters of an engine component for assembly and programming |
DE10117809A1 (de) * | 2001-04-10 | 2002-10-17 | Bosch Gmbh Robert | System und Verfahren zum Erfassen von Informationen |
US6691677B2 (en) * | 2002-02-15 | 2004-02-17 | Cummins Inc. | Fuel delivery device and fuel delivery system |
DE10213349A1 (de) * | 2002-03-26 | 2003-10-09 | Bosch Gmbh Robert | System zum Erfassen von Informationen |
DE10229019A1 (de) * | 2002-06-28 | 2004-01-29 | Robert Bosch Gmbh | Verfahren zur Steuerung eines Kraftstoffzumeßsystems einer Brennkraftmaschine |
DE10236820A1 (de) * | 2002-08-10 | 2004-02-26 | Robert Bosch Gmbh | Verfahren zum Individualisieren eines mit einem piezoelektrischen Element versehenen Injektors einer Brennkraftmaschine, Verfahren zur Ansteuerung eines piezoelektrischen Elements, Injektor, sowie Brennkraftmaschine |
DE10244091A1 (de) * | 2002-09-23 | 2004-04-01 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine |
DE10312914A1 (de) * | 2003-03-22 | 2004-10-07 | Robert Bosch Gmbh | Kraftstoffeinspritzventil und Brennkraftmaschinenanlage |
JP4487922B2 (ja) * | 2005-12-15 | 2010-06-23 | 株式会社デンソー | 燃料噴射装置の初期設定方法、および燃料噴射装置の初期設定方法に用いられる初期設定装置 |
-
2005
- 2005-01-12 DE DE102005001425A patent/DE102005001425A1/de not_active Withdrawn
- 2005-12-12 DE DE502005006630T patent/DE502005006630D1/de active Active
- 2005-12-12 US US11/793,664 patent/US20080255747A1/en not_active Abandoned
- 2005-12-12 CN CNB200580046472XA patent/CN100529371C/zh not_active Expired - Fee Related
- 2005-12-12 WO PCT/EP2005/056666 patent/WO2006074846A1/de active Application Filing
- 2005-12-12 EP EP05850088A patent/EP1838956B1/de not_active Not-in-force
Non-Patent Citations (1)
Title |
---|
See references of WO2006074846A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN100529371C (zh) | 2009-08-19 |
WO2006074846A1 (de) | 2006-07-20 |
DE102005001425A1 (de) | 2006-07-20 |
US20080255747A1 (en) | 2008-10-16 |
CN101099035A (zh) | 2008-01-02 |
EP1838956B1 (de) | 2009-02-11 |
DE502005006630D1 (de) | 2009-03-26 |
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