EP0653693B1 - Appareil pour réguler la chute de tension aux bornes d'un utilisateur - Google Patents

Appareil pour réguler la chute de tension aux bornes d'un utilisateur Download PDF

Info

Publication number
EP0653693B1
EP0653693B1 EP94112798A EP94112798A EP0653693B1 EP 0653693 B1 EP0653693 B1 EP 0653693B1 EP 94112798 A EP94112798 A EP 94112798A EP 94112798 A EP94112798 A EP 94112798A EP 0653693 B1 EP0653693 B1 EP 0653693B1
Authority
EP
European Patent Office
Prior art keywords
current
voltage
consumer
load
transistor
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
EP94112798A
Other languages
German (de)
English (en)
Other versions
EP0653693A2 (fr
EP0653693A3 (fr
Inventor
Klaus Dressler
Andreas Dipl.-Ing. Koch (Fh)
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 EP0653693A2 publication Critical patent/EP0653693A2/fr
Publication of EP0653693A3 publication Critical patent/EP0653693A3/fr
Application granted granted Critical
Publication of EP0653693B1 publication Critical patent/EP0653693B1/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
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
    • G05F3/02—Regulating voltage or current
    • G05F3/08—Regulating voltage or current wherein the variable is DC
    • G05F3/10—Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics
    • G05F3/16—Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics being semiconductor devices
    • G05F3/20—Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations
    • G05F3/26—Current mirrors
    • G05F3/267—Current mirrors using both bipolar and field-effect technology
    • 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
    • F02D2041/2017—Output circuits, e.g. for controlling currents in command coils using means for creating a boost current or using reference switching
    • 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
    • F02D2041/202—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit
    • F02D2041/2058—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit using information of the actual current value

Definitions

  • the invention relates to a device for regulating one Voltage drop according to the generic term of the independent consumer Claim.
  • Devices for regulating a voltage are known in which the difference between a target voltage and the measured voltage is fed to a controller. This controller forms a manipulated variable to act on an actuator.
  • the controllers used usually include operational amplifiers and capacities.
  • the operational amplifiers in particular require one very high expenditure on components and application. So conventional Controllers are set so that they work stably.
  • the invention has for its object in a device to provide a voltage regulator mentioned in the introduction, the is as simple as possible. This task is carried out by the in the Features characterized independent claim solved.
  • the device according to the invention has the advantage that the voltage regulator has very few easily integrated components. Furthermore, the voltage regulator works stably and does not incline Vibrations. In particular, the controller does not need to be specially designed become. The dynamics of the controller is only a few components determined and is therefore easy to control.
  • the invention is described below with reference to the drawing Embodiment explained.
  • the figure shows a schematic Representation of the circuit arrangement.
  • the exemplary embodiment described is a Device for regulating the voltage on a consumer, in particular on an electromagnetic consumer.
  • the device according to the invention in connection with internal combustion engines to be used, especially when metering Fuel in a combustion chamber of the internal combustion engine.
  • a solenoid valve can then be used in a particularly advantageous manner for controlling the metering of fuel into the internal combustion engine be used.
  • GDP Begin of Injection Period
  • the applied to the solenoid valve Tension to a constant value using a voltage regulator is regulated. It is particularly advantageous if the following Described device for determining the start of injection and / or used to characterize the injection end becomes.
  • the consumer is a Solenoid valve for determining the injected into an internal combustion engine Amount of fuel.
  • the device is used to Regulate the voltage at the solenoid valve to determine the point in time can, in which the armature of the solenoid valve reaches its end position.
  • FIG. 1 are essential elements of a device schematically for controlling a solenoid-controlled fuel metering device shown.
  • a connection of a consumer 100 in particular of an electromagnetic consumer is connected to a voltage supply device (Ubat).
  • the second connection of the consumer 100 stands via a switching means 110 and a sensor 145 with ground in Connection.
  • the sensor 145 is connected to an evaluation circuit 140 Connection.
  • the switching means 110 is preferably a field effect transistor realized.
  • Voltage current transformers 421 and 422 tap the potential values present at the connections of the consumer 100.
  • the voltage current transformers 421 and 422 apply a current I H and I L to a block 400.
  • block 400 is connected to a reference voltage V CC via a current source 450.
  • An output of block 400 is connected to the gate of field effect transistor 110 via a gate resistor 423.
  • block 400 is shown in more detail in FIG. Elements already described in FIG. 1 are shown in FIG. 2 with corresponding ones Reference numbers marked.
  • the voltage current transformers act on block 400, which is essentially a first Current mirror 410 and a second current mirror 420 include.
  • the Voltage current transformers act on the first current mirror 410 Stream.
  • the first current mirror 410 is in turn with a second Current mirror 420 connected. This is over a gate resistance 423 in connection with the gate of the field effect transistor 110.
  • a current mirror is usually understood to mean interconnection two semiconductor elements in such a way that a current through the one semiconductor element a corresponding or proportional Current through the other semiconductor element results. If two transistors are used for a current mirror circuit, the two switching paths of the transistors form two current paths.
  • a transistor 440 serves as the second Current path and a transistor 445 as the first current path.
  • the potentials at the two connections of the consumer 100 are over the two resistors 421 and 422 tapped.
  • the first resistor 421 is connected to the collector of the transistor via a node 449 440 of the second current path of the first current mirror in connection.
  • the second resistor 422 is connected to a node 448 with the collector of transistor 445 of the first current path of the first current mirror in connection.
  • the base of transistor 440 and the base of transistor 445 are connected via point 446.
  • the point 446 is also with the point 448 connected.
  • a transistor 430 forms the first Rung.
  • the collector of transistor 430 is above the Point 438 in connection with point 449.
  • a transistor 435 forms the second rung.
  • the base of transistor 430 is with the base of transistor 435 and point 436. This point 436 is connected to point 438.
  • the collector-emitter current of transistor 430 is impressed on transistor 435.
  • the second current path is connected to a reference voltage V CC via a current source 450.
  • the collector of transistor 435 is connected via node 439 to current source 450, to gate resistor 423 and thus to the gate of field-effect transistor 110.
  • This device now works as a voltage regulator as follows.
  • the Potential values at consumer 100 are determined by the resistors 421 and 422 converted into currents.
  • the first current mirror 410 forms the difference between the two current values. This actual current is a measure represents the voltage drop across the consumer.
  • This actual current becomes the first current path of the second current mirror 420 acted upon. This current is mirrored and with that of compared to the current source 450 supplied target current. This one from the Current source 450 supplied target current serves as the target value. With the Differential current between target current and actual current becomes the gate of the Field effect transistor applied.
  • the target current is chosen so that through the second path of the current mirror 420 in the steady state, a current flows that the corresponds to the setpoint value supplied by the current source 450. Are these the two currents are the same, that is to say the one falling off at the consumer 100 Voltage corresponds to the target voltage, so no gate current flows the switching means remains in its position.
  • the voltage drop across the consumer is too high, it flows in correspondingly higher current through the current mirror, which in turn causes that the gate is discharged and the switching means is locked. This causes the voltage at consumer 100 to drop.
  • the voltage at the consumer is too low a value assumes. In this case, too little current flows through the current mirror and the gate is charged via the gate current.
  • the field effect transistor becomes conductive or enables one stronger current flow through the consumer.
  • the procedure is as follows.
  • the one to be regulated Voltage at consumer 100 is generated by voltage current transformers 421 and 422 and the current mirror 410 converted to a current.
  • the Current mirror 420 regulates the voltage drop across the consumer the target current. This takes place in that of the first current mirror 410 delivered current mirrored and in node 439 is subtracted from the target current.
  • This differential current becomes Control of the field effect transistor used. That is, the Current changes the gate charge and thus the state of the field effect transistor.
  • the voltage regulation has settled when the current in the second current path is equal to that from the current source delivered electricity is.
  • the second current mirror serves to bring the I current to this current level adapt.
  • the actual current directly with the Target current is compared.
  • the second current mirror the differential current is supplied as an input variable.
  • the current provided by the current source 450 corresponds to the am Consumer dropping voltage. By changing the current value directly affect the voltage at the consumer. It exists a fixed, preferably proportional relationship between the current supplied by the power source 450 and the consumer falling voltage. Therefore, through the power source 450 is one Variable setpoint specification for the voltage drop across the consumer possible.
  • the second current mirror essentially works as a controller Proportional behavior. Due to the capacities between gate and Source or between the gate and drain of the field effect transistor 110 there is also an integral behavior of the current control.
  • the dynamics of the controller are essentially determined by the current source and determines the capacitances of the field effect transistor 110.
  • the Dynamics can therefore be influenced very easily. Because no operational amplifiers no stability problems arise, that the controller is not prone to vibrations.
  • the circuit shown in the figure in particular the current mirror 410 and 420 can be easily integrated. All measuring voltages are immediately converted into currents. This has the advantage that there are no high voltages at the input of the integrated circuit. Due to the voltage current transformer there is a high common mode rejection possible.
  • the evaluation circuit determines from that by the solenoid valve 100 flowing current the time when the anchor of the energized Solenoid valve has reached an end position.
  • the course over time of the current is evaluated at a constant voltage to determine whether this course a kink or a significant change in Differential quotient of the current has.
  • the voltage at the solenoid valve by means of the device described regulated to a constant value.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Nonlinear Science (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Automation & Control Theory (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Electrical Variables (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Claims (6)

  1. Dispositif de régulation d'une tension aux bornes d'un consommateur (100), selon lequel le consommateur (100) et un organe de réglage (110) sont branchés en série entre la masse et la tension d'alimentation,
    caractérisé par
    des premiers moyens (421, 422, 410) qui convertissent les valeurs de potentiel aux bornes du consommateur (100) en des valeurs d'intensité et forment un courant réel correspondant à la différence des deux intensités obtenues par conversion,
    un second moyen (450) pour prédéfinir un courant de consigne,
    des moyens de régulation (400), qui en fonction de la comparaison du courant réel et du courant de consigne prédéfinissent une grandeur de commande appliquée à l'organe de réglage.
  2. Dispositif selon la revendication 1,
    caractérisé en ce que
    les premiers moyens comprennent au moins un miroir de courant qui fournit un courant correspondant à la tension aux bornes du consommateur.
  3. Dispositif selon les revendications 1 ou 2,
    caractérisé en ce que
    les moyens de régulation comprennent au moins un miroir de courant.
  4. Dispositif selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    l'organe de réglage reçoit la différence entre le courant réel et le courant de consigne.
  5. Dispositif selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    l'organe de réglage est un transistor à effet de champ.
  6. Dispositif selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    le consommateur est une électrovanne fixant la quantité de carburant à injecter dans un moteur à combustion interne et le dispositif est utilisé pour déterminer une des grandeurs caractérisant le début de l'injection et/ou la fin de l'injection.
EP94112798A 1993-10-20 1994-08-17 Appareil pour réguler la chute de tension aux bornes d'un utilisateur Expired - Lifetime EP0653693B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4335687 1993-10-20
DE4335687A DE4335687A1 (de) 1993-10-20 1993-10-20 Vorrichtung zur Regelung einer an einem Verbraucher abfallenden Spannung

Publications (3)

Publication Number Publication Date
EP0653693A2 EP0653693A2 (fr) 1995-05-17
EP0653693A3 EP0653693A3 (fr) 1995-08-30
EP0653693B1 true EP0653693B1 (fr) 2001-11-21

Family

ID=6500535

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94112798A Expired - Lifetime EP0653693B1 (fr) 1993-10-20 1994-08-17 Appareil pour réguler la chute de tension aux bornes d'un utilisateur

Country Status (5)

Country Link
US (1) US5572111A (fr)
EP (1) EP0653693B1 (fr)
JP (1) JP3638318B2 (fr)
DE (2) DE4335687A1 (fr)
ES (1) ES2168281T3 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19726773A1 (de) * 1997-06-24 1999-01-07 Bosch Gmbh Robert Verfahren zum Abgleichen eines Stromreglers
DE10140706A1 (de) 2001-08-18 2003-02-27 Mahle Filtersysteme Gmbh Hochgeschwindigkeitsstelleinrichtung
US8438672B2 (en) 2005-11-11 2013-05-14 Masco Corporation Of Indiana Integrated electronic shower system
JP4715807B2 (ja) * 2007-05-24 2011-07-06 トヨタ自動車株式会社 燃料噴射装置の調整方法、及び燃料噴射装置の制御装置
DE102008007211B4 (de) * 2008-02-01 2017-10-26 Continental Automotive Gmbh Schaltungsanordnung zum Ansteuern einer induktiven Last und Verwendung einer solchen Schaltungsanordnung
TWI358621B (en) * 2008-03-11 2012-02-21 Asustek Comp Inc Voltage adjusting apparatus
JP5493711B2 (ja) * 2009-10-29 2014-05-14 Ｊｆｅスチール株式会社 溶射補修材料

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2888632A (en) * 1956-08-23 1959-05-26 Baldwin Piano Co Transistor current regulating circuits
US2991407A (en) * 1958-02-17 1961-07-04 Sylvania Electric Prod Current supply apparatus
US3549983A (en) * 1968-06-18 1970-12-22 Union Carbide Corp High efficiency high power d.c. series type voltage regulator
DE3405599A1 (de) * 1984-02-16 1985-08-22 Siemens AG, 1000 Berlin und 8000 München Stromfuehler fuer den regelkreis eines schaltreglers
JPH0666600B2 (ja) * 1989-10-02 1994-08-24 株式会社東芝 電流検出回路
US5237262A (en) * 1991-10-24 1993-08-17 International Business Machines Corporation Temperature compensated circuit for controlling load current
JPH07121252A (ja) * 1993-10-26 1995-05-12 Rohm Co Ltd 安定化電源回路内蔵ｉｃ

Also Published As

Publication number Publication date
JPH07279741A (ja) 1995-10-27
ES2168281T3 (es) 2002-06-16
US5572111A (en) 1996-11-05
DE59409968D1 (de) 2002-01-03
DE4335687A1 (de) 1995-04-27
EP0653693A2 (fr) 1995-05-17
JP3638318B2 (ja) 2005-04-13
EP0653693A3 (fr) 1995-08-30

Similar Documents

Publication Publication Date Title
DE19814681B4 (de) Current-Mode-Schaltregler
DE2338538B2 (de) Schaltungsanordnung zur geregelten Gleichstromversorgung
EP0765438B1 (fr) Procede et dispositif de commande d'un consommateur electromagnetique
DE4029794A1 (de) Verfahren und einrichtung zur ansteuerung eines elektromagnetischen verbrauchers
DE2538301A1 (de) Verfahren und vorrichtung zum steuern einer elektromagnetisch betaetigten einspritzduese
EP0653693B1 (fr) Appareil pour réguler la chute de tension aux bornes d'un utilisateur
EP0233191A1 (fr) Circuit de reglage de l'alimentation haute tension d'un filtre electrostatique.
DE69525533T2 (de) Treiberschaltung für eine Einspritzdüse
EP0693756A1 (fr) Procédé et dispositif d'excitation d'un consommateur électromagnétique
DE3022685A1 (de) Einrichtung zur durchflussmassenmessung bei einer brennkraftmaschine
DE4414609B4 (de) Einrichtung zur Ansteuerung eines Verbrauchers
DE4034081C2 (de) Stromregelschaltung für einen induktiven Verbraucher
DE4209474A1 (de) Einrichtung zur Steuerung wenigstens eines elektrischen Verbrauchers in einem Fahrzeug
EP0720770B1 (fr) Procede et dispositif permettant d'exciter un consommateur electromagnetique
DE19646052A1 (de) Verfahren und Vorrichtung zur Ansteuerung eines Verbrauchers
DE3325044A1 (de) Stromregler fuer einen elektromagnetischen verbraucher in verbindung mit brennkraftmaschinen
DE3738055A1 (de) Verfahren zur temperaturregelung von gluehkerzen bei dieselmotoren und schaltungsanordnung zur durchfuehrung des verfahrens
DE3516112A1 (de) Integrierbare lastspannung-samplingschaltung fuer effektivlast-mittelwertspannungs-steuereinrichtung
DE3312108A1 (de) Vorrichtung zur elektronischen steuerung der stellung eines stellglieds
DE3909141A1 (de) Schaltungsanordnung fuer den betrieb eines elektromagnetischen verbrauchers
DE19854305A1 (de) Verfahren und Vorrichtung zur Ansteuerung eines elektromagnetischen Verbrauchers
DE1751611B2 (de) Elektronische regelvorrichtung fuer die einspritzmengenregelung einer brennkraftmaschine
DE3813066A1 (de) Geschalteter stromregler
DE4415361A1 (de) Verfahren und Vorrichtung zur Steuerung eines elektromagnetischen Verbrauchers
DE3511966C2 (de) Stromregelung für einen elektromagnetischen Verbraucher in Verbindung mit 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: A2

Designated state(s): DE ES FR GB IT SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE ES FR GB IT SE

17P Request for examination filed

Effective date: 19960229

17Q First examination report despatched

Effective date: 19990430

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB IT SE

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

REF Corresponds to:

Ref document number: 59409968

Country of ref document: DE

Date of ref document: 20020103

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

Effective date: 20020212

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2168281

Country of ref document: ES

Kind code of ref document: T3

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

Ref country code: FR

Payment date: 20090819

Year of fee payment: 16

Ref country code: ES

Payment date: 20090821

Year of fee payment: 16

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

Ref country code: SE

Payment date: 20090821

Year of fee payment: 16

Ref country code: GB

Payment date: 20090821

Year of fee payment: 16

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

Ref country code: IT

Payment date: 20090825

Year of fee payment: 16

EUG Se: european patent has lapsed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20100817

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20110502

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: 20100817

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: 20100831

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: 20100817

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20111019

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

Ref country code: ES

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

Effective date: 20100818

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

Ref country code: SE

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

Effective date: 20100818

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

Ref country code: DE

Payment date: 20131025

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59409968

Country of ref document: DE

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 EXPIRATION OF PROTECTION

Effective date: 20140819