EP0856098A1 - Dispositif et procede de diagnostic de l'etat d'une sonde disposee en amont du pot catalytique - Google Patents
Dispositif et procede de diagnostic de l'etat d'une sonde disposee en amont du pot catalytiqueInfo
- Publication number
- EP0856098A1 EP0856098A1 EP96934934A EP96934934A EP0856098A1 EP 0856098 A1 EP0856098 A1 EP 0856098A1 EP 96934934 A EP96934934 A EP 96934934A EP 96934934 A EP96934934 A EP 96934934A EP 0856098 A1 EP0856098 A1 EP 0856098A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- krich
- value
- probe
- signal
- krichp
- 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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
-
- 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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1439—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the position of the sensor
- F02D41/1441—Plural sensors
-
- 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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1493—Details
- F02D41/1495—Detection of abnormalities in the air/fuel ratio feedback system
-
- 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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
- F02D2041/1413—Controller structures or design
- F02D2041/1432—Controller structures or design the system including a filter, e.g. a low pass or high pass filter
Definitions
- the invention relates to internal combustion engines of the injection type and comprising a catalytic exhaust system preceded by a probe and, more particularly in such engines, a device and a method for diagnosing the state of the probe arranged in upstream of the catalytic converter.
- the diagnosis then consists in declaring the probe failure if one or more faults are detected.
- Such a diagnostic method is based on the analysis of the behavior of the probe in order to deduce therefrom a state of the probe by presuming degradation modes. For example, an aged probe has reduced voltage dynamics and / or extended tilt times.
- a dynamic reduced voltage probe may be good vis-à-vis the emission of pollutants if only this characteristic is affected.
- An object of the present invention is therefore to implement a device and a method for diagnosing the state of a probe disposed upstream of a catalytic converter associated with an internal combustion engine of the injection type which does not have the above-listed drawbacks of prior art devices and methods.
- Another object of the present invention is also to implement a device and a method for diagnosing the state of an upstream probe which does not call for measurements of the intrinsic characteristics of the probe.
- the method of the invention is based on monitoring the characteristics of the wealth loop which have an influence on the pollutant emissions, namely, the average period and the average wealth of the loop.
- the state of the upstream probe is evaluated on the basis of the effects it produces on the wealth loop, that is to say on pollutant emissions, and not on the basis of its own characteristics.
- the effects of the state of the upstream probe are likely to generate pollutant emissions by exceeding the limits of the "window" for proper operation of the catalytic converter, this excess being due to the drift in the average operating richness and / or the average period of the wealth loop which becomes too long.
- the invention proposes to implement a second non-linear probe which is arranged downstream of the catalytic converter and which is an integral part of a second feedback loop thanks to which the output voltage v ava ⁇ of the second probe, called the downstream probe, is controlled by a reference voltage VC ava ⁇ corresponding to the center of the window for the correct operation of the catalytic converter.
- the signal which is provided by this loop is used to modify the signal of the first feedback loop comprising the upstream probe.
- the invention relates to a device for diagnosing the state of a nonlinear probe disposed upstream of a catalytic converter associated with an internal combustion engine of the injection type controlled by an electronic computer, said engine comprising a first loop of control, including said non-linear probe, to supply the computer with a first KCL correction signal of the quantity of fuel injected and a second control loop, including a second non-linear probe arranged downstream of said catalytic converter to provide a second signal for correcting KRICH of the quantity of fuel injected, said diagnostic device being characterized in that it comprises: - a filtering circuit to which the second KRICH correction signal is applied to supply a filtered signal KRICHp, - a measuring circuit to which the output signal V t from the upstream probe is applied to determine the average value T of the correction period d e the first control loop, and - a logic circuit to determine the good or defective DIAG state of the upstream probe as a function of the values of the filtered signal KRICHp and of the average period T
- the logic circuit determines that the upstream probe is defective if the filtered signal is greater than a maximum value or less than a minimum value or even if the average period is greater than a maximum value.
- the maximum and minimum values of the filtered signal KRICHp are determined by calibration as a function of the value of the average period and are recorded in a memory. This memory is addressed by the value of the average period to provide the maximum and minimum values to which the value of the filtered signal is compared.
- the invention also relates to a method which comprises the following steps: filtering the second correction signal KRICH to obtain a filtered signal KRICHp,
- FIG. 1 is a block diagram of a double wealth control loop system to which the invention applies;
- FIG. 2-A and 2-B are diagrams showing how the richness correction is carried out with a single feedback loop comprising a probe upstream of the catalytic converter;
- FIGS 3-A and 3-B are diagrams showing a way of correcting the richness using a second feedback loop comprising a probe downstream of the catalytic converter;
- FIG. 4 is a diagram showing how to filter the correction signal KRICH to obtain a filtered signal KRICHp;
- FIG. 5 is a diagram showing an algorithm for calculating the average period of the signal from the upstream probe
- FIG. 6 is a diagram showing the curves which determine the zones of correct or defective operation of the upstream probe
- FIG. 7 is a diagram showing a decision algorithm for determining the state of the upstream probe.
- an internal combustion engine 10 is controlled, in a known manner, by an electronic computer 12.
- the exhaust gases from this engine are filtered by an exhaust pipe 14 of catalytic type, from which they escape towards the open air.
- a first probe 16 is disposed at the inlet of the exhaust pipe and measures the content of one of the main components of the exhaust gases, this component usually being oxygen.
- This probe is of the non-linear type and is often called, as indicated above, "lambda" probe or EGO probe.
- This probe provides on its output terminal an upstream electrical signal V ( Figure 2-A) which is applied to a comparator circuit 18 in which V a ⁇ non ⁇ . is compared with a threshold voltage v S a ⁇ rt ⁇ n -t- to determine the sign of V a ⁇ nont with respect to this threshold.
- the value of the threshold v S a ⁇ non t depends on the characteristics of the probe and corresponds to the tilting voltage of the probe when the stoichiometric conditions are met.
- the output terminal of the comparator circuit 18, which provides a binary signal 1 or 0, is connected to the input terminal of a first correction regulator 20 for richness regulation which is of the proportional type of gain P and integral of gain I
- the corrector circuit 20 supplies a signal KCL which has the form represented by the diagram of FIG. 2-B. It is this signal KCL which is supplied to the computer 12 to control the quantity of fuel to be injected.
- KCL which has the form represented by the diagram of FIG. 2-B. It is this signal KCL which is supplied to the computer 12 to control the quantity of fuel to be injected.
- This circuit 24 essentially consists of a comparator 28 to which the signal v ava ⁇ and a so-called reference signal VCa., v ,, al ! and a third corrector circuit 30 to which the signal (V downstream - VC downstream ) supplied by the comparator circuit 28 is applied.
- the third corrector circuit 30 is for example of the proportional and integral type and supplies the signal KRICH which is applied to the second correction circuit 22.
- the second corrector circuit 22 can introduce the KRICH correction in different ways, one of which will be explained in relation to the time diagrams of FIGS. 3-A and 3-B. These diagrams are plots of the KCL signal as modified by the second corrector circuit 22, the modified KCL signal being called KCL. ,,.
- the signal KRICH is applied during the lean-to-rich transitions which are detected by the first probe, which corresponds to the falling edge of the signal KCL.
- KRICH> 0 enrichment
- the plot of KCL ⁇ is that of figure 3-A while in the case where KRICH ⁇ 0 (depletion), the plot of KCL ⁇ is that of figure 3-B .
- the device for diagnosing the state of the probe 16 comprises the elements represented inside the rectangle 40 of the diagram in FIG. 1. It is a filter 32 to which the output signal KRICH of the correcting circuit is applied. 24 of the second loop as well as a calculation circuit 34 of the average period T m of the signal v amcm t of - The upstream probe 16.
- the output terminals of the filter 32 and of the calculation circuit 34 are connected to a logic circuit 36 which determine the good or bad state of the probe 16 as a function of the output signal KRICHp of the filter 32 and of the value T m of the mean period of the signal v am ⁇ nf
- the binary sig nal 1 or O of the good or bad state of probe 16 appears on the DIAG output terminal of logic circuit 36.
- the information which is provided by the computer 12 is as follows:
- Circuits 32 and 34 process the information listed above and only allow filtering and calculation of T m if the following conditions are met simultaneously:
- REG min and REG ma ⁇ being respectively the minimum and maximum values of the engine speed REG between which the diagnosis can be carried out;
- P m i n and p max being respectively the minimum and maximum values of the pressure P of the inlet manifold between which the diagnosis can be carried out.
- the filtering 32 performs the calculation of the filtered richness correction KRICHp according to the algorithm of FIG. 4. This calculation (step 42) is only carried out if the conditions listed above are fulfilled (step 44) and, in this case, the average wealth KRICHp is given by:
- KRICHp KRICHp + K (KRICH - KRICHp) with K a filtering factor between 0 and 1.
- the calculation circuit 34 performs the calculation of the average period T m according to the algorithm of FIG. 5. This calculation is only carried out if the conditions listed above are met (step 50). This calculation of the mean period T ⁇ is to count the transitions of the voltage V upstream of a value below the threshold vs. upstream ⁇ a vaj - eur upper threshold for a certain time interval T D and dividing the interval T D by the number N of transitions that have been detected.
- the algorithm for calculating the average period T of the first loop is represented by the diagram in FIG. 5.
- the first step (50) consists in checking whether the diagnostic conditions listed above are fulfilled. If the answer is "YES”, the step of counting 52 of the time T is started, that is to say that the calculation of the average period T_ begins.
- step 54 the old state STATE A of the probe corresponding to v upstream ⁇ vs upstream
- the counter for the duration T D of the diagnosis is increased by the value T of the counter 52.
- the next step 68 resets the counter 52 to zero for a new measurement T of the current period.
- STATE A 1 so that the condition of step 56 is not fulfilled, in which case the steps of the algorithm are repeated.
- the logic circuit 36 performs the steps of the algorithm of FIG. 7 so as to compare the value of KRICHp with values which have been determined to be limit values beyond which the probe is considered to be defective and this for a value determined T m of the mean period.
- These limit values called KRICH ma ⁇ for an excessively high richness and KRICH- j ⁇ for an excessive impoverishment, are determined by a calibration using a series of probes whose aging characteristics are known. This calibration makes it possible to plot the KRICH ⁇ na ⁇ and KRICH m ⁇ n curves as a function of the period T m (FIG. 6), curves which can be stored in the form of two cartographic tables or a single table combining the two.
- the cartographic tables can be produced by memories which are addressed by the value of T m , and the values read are KRICrL and KRI ⁇ L j . ⁇ For the value of T m (FIG. 6).
- the diagnosis is complete (step 94) and a new diagnosis can be launched to obtain a new value of KRICHp and of T m .
- KRICH ' max , KRICH' min and T ' ma ⁇ it is possible to limit oneself to choosing fixed thresholds for KRICH ' max , KRICH' min and T ' ma ⁇ and it is therefore no longer necessary to have two cartographic tables.
- the value of KRICHp is compared with the two selected thresholds while the value T m of the average value is compared with the threshold T ' a ⁇ . If KRICHp is greater than KRICH ' ma ⁇ , or less than KRICH' m ⁇ n or greater than T'_ a ⁇ , the probe is considered to be defective. Otherwise, the probe is considered good.
- the algorithm of FIG. 7 can be implemented in the form of software or in that of electronic circuits in which the comparison steps 80, 82 and 84 would be performed by number comparators.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9512238 | 1995-10-18 | ||
FR9512238A FR2740173B1 (fr) | 1995-10-18 | 1995-10-18 | Dispositif et procede de diagnostic de l'etat d'une sonde disposee en amont du pot catalytique |
PCT/FR1996/001631 WO1997014876A1 (fr) | 1995-10-18 | 1996-10-18 | Dispositif et procede de diagnostic de l'etat d'une sonde disposee en amont du pot catalytique |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0856098A1 true EP0856098A1 (fr) | 1998-08-05 |
EP0856098B1 EP0856098B1 (fr) | 1999-12-22 |
Family
ID=9483660
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96934934A Expired - Lifetime EP0856098B1 (fr) | 1995-10-18 | 1996-10-18 | Dispositif et procede de diagnostic de l'etat d'une sonde disposee en amont du pot catalytique |
Country Status (7)
Country | Link |
---|---|
US (1) | US6192310B1 (fr) |
EP (1) | EP0856098B1 (fr) |
JP (1) | JP3993891B2 (fr) |
KR (1) | KR100425426B1 (fr) |
DE (1) | DE69605816T2 (fr) |
FR (1) | FR2740173B1 (fr) |
WO (1) | WO1997014876A1 (fr) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2769985B1 (fr) * | 1997-10-17 | 1999-12-31 | Renault | Procede et systeme de surveillance du fonctionnement et du vieillissement d'un capteur a oxygene lineaire |
US6311680B1 (en) | 2000-03-21 | 2001-11-06 | Ford Global Technologies, Inc. | Active adaptive bias for closed loop air/fuel control system |
DE10128969C1 (de) * | 2001-06-15 | 2002-12-12 | Audi Ag | Verfahren zur Diagnose einer Führungssonde |
JP4802116B2 (ja) * | 2007-02-21 | 2011-10-26 | 日本特殊陶業株式会社 | ガスセンサの異常診断方法、ガスセンサの異常診断装置 |
JP4874918B2 (ja) * | 2007-10-01 | 2012-02-15 | 日本特殊陶業株式会社 | ガスセンサの異常診断方法、ガスセンサの異常診断装置 |
US9606160B2 (en) * | 2014-03-05 | 2017-03-28 | GM Global Technology Operations LLC | Detection of stuck in range sensor and method |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4747265A (en) * | 1985-12-23 | 1988-05-31 | Toyota Jidosha Kabushiki Kaisha | Double air-fuel ratio sensor system having improved exhaust emission characteristics |
DE4125154C2 (de) * | 1991-07-30 | 2001-02-22 | Bosch Gmbh Robert | Verfahren und Einrichtung zur Lambdasonden-Überwachung bei einer Brennkraftmaschine |
DE4139561A1 (de) * | 1991-11-30 | 1993-06-03 | Bosch Gmbh Robert | Verfahren und vorrichtung zum ueberwachen des alterungszustandes einer sauerstoffsonde |
US5337555A (en) * | 1991-12-13 | 1994-08-16 | Mazda Motor Corporation | Failure detection system for air-fuel ratio control system |
JP3303981B2 (ja) * | 1991-12-20 | 2002-07-22 | 株式会社日立製作所 | エンジン排気ガス浄化装置の診断装置 |
JP2978960B2 (ja) * | 1992-07-31 | 1999-11-15 | 本田技研工業株式会社 | 内燃エンジンの酸素センサ劣化検出装置 |
DE4331153C2 (de) * | 1992-09-26 | 2001-02-01 | Volkswagen Ag | Verfahren zur Gewinnung von fehlerspezifischen Beurteilungskriterien eines Abgaskatalysators und einer Regel-Lambdasonde |
US5656765A (en) * | 1995-06-28 | 1997-08-12 | General Motors Corporation | Air/fuel ratio control diagnostic |
-
1995
- 1995-10-18 FR FR9512238A patent/FR2740173B1/fr not_active Expired - Lifetime
-
1996
- 1996-10-18 EP EP96934934A patent/EP0856098B1/fr not_active Expired - Lifetime
- 1996-10-18 JP JP51557497A patent/JP3993891B2/ja not_active Expired - Fee Related
- 1996-10-18 KR KR10-1998-0702854A patent/KR100425426B1/ko not_active IP Right Cessation
- 1996-10-18 WO PCT/FR1996/001631 patent/WO1997014876A1/fr active IP Right Grant
- 1996-10-18 US US09/091,237 patent/US6192310B1/en not_active Expired - Lifetime
- 1996-10-18 DE DE69605816T patent/DE69605816T2/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9714876A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP3993891B2 (ja) | 2007-10-17 |
US6192310B1 (en) | 2001-02-20 |
DE69605816D1 (de) | 2000-01-27 |
WO1997014876A1 (fr) | 1997-04-24 |
FR2740173B1 (fr) | 1997-12-05 |
KR19990064350A (ko) | 1999-07-26 |
KR100425426B1 (ko) | 2004-07-15 |
JP2000508035A (ja) | 2000-06-27 |
DE69605816T2 (de) | 2000-07-27 |
EP0856098B1 (fr) | 1999-12-22 |
FR2740173A1 (fr) | 1997-04-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7340945B2 (en) | Failure detection apparatus and failure detection method for exhaust gas sensor | |
EP1759107B1 (fr) | Procede et dispositif pour gerer le fonctionnement d'un piege a oxydes d'azotes, et diagnostiquer son etat de vieillisement | |
EP1568863A1 (fr) | Procédé de diagnostic pour un catalyseur de gaz d'echappement d'un moteur thermique et vehicule mettant en oeuvre ce procédé | |
FR2857410A1 (fr) | Systeme de controle du bruit de combustion d'un moteur diesel de vehicule automobile | |
FR2900202A1 (fr) | Procede et appareil de commande pour gerer un moteur a combustion interne | |
FR2714729A1 (fr) | Dispositif d'exploitation du signal d'une sonde à oxygène. | |
FR2767198A1 (fr) | Procede de controle de la capacite de fonctionnement d'une sonde lambda | |
EP0856098B1 (fr) | Dispositif et procede de diagnostic de l'etat d'une sonde disposee en amont du pot catalytique | |
WO2010128262A1 (fr) | Procédé et dispositif de diagnostic de l'état de fonctionnement d'un système d'alimentation en carburant d'un moteur a combustion interne de véhicule automobile | |
FR2864145A1 (fr) | Procede de detection de la presence d'un systeme de depollution par mesure de temperature | |
WO2009098420A1 (fr) | Procede de detection de microcoupures electriques et de gestion du fonctionnement d'un moteur | |
WO2022018332A1 (fr) | Procede de correction d'une derive de mesure de richesse | |
FR3069573B1 (fr) | Procede d'analyse du fonctionnement d'un systeme anti-pollution d'un vehicule automobile | |
EP3511543A1 (fr) | Procédé d'estimation du vieillissement d'un catalyseur pour moteur thermique | |
WO1997014877A1 (fr) | Systeme et procedure de double boucle de commande pour moteur a combustion interne | |
EP0909888B1 (fr) | Procédé de surveillance du fonctionnement et du vieillissement d'un capteur à oxygène linéaire | |
FR2907169A1 (fr) | Systeme et procede de controle du fonctionnement d'un moteur a combustion interne avec compensation des derives et des dispersions de la mesure de debit d'air admis | |
WO2021148731A1 (fr) | Procede de surveillance d'une sequence de demarrage d'une turbomachine et systeme de surveillance mettant en oeuvre ce procede | |
WO2014199086A1 (fr) | Procédé de diagnostic de l'état de fonctionnement d'injecteurs de carburant dans un moteur à combustion interne, moteur à combustion interne et véhicule automobile utilisant un tel procédé | |
FR2840356A1 (fr) | Procede et dispositif de determination de parametres d'un systeme d'epuration des gaz d'echappement | |
EP4031759A1 (fr) | Procede de reglage de la richesse d'un moteur a combustion interne a allumage commande | |
WO2007034095A1 (fr) | Procede de traitement d'un signal de mesure representatif de la richesse en oxygene d'un gaz et dispositif correspondant | |
EP2650516A1 (fr) | Procédé d'estimation de la richesse dans un moteur à combustion de véhicule automobile | |
FR3096085A1 (fr) | Procédé de contrôle d’une sonde lambda | |
EP1036269A1 (fr) | Procede de controle de l'injection d'un moteur a combustion interne |
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 |
|
17P | Request for examination filed |
Effective date: 19980415 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE ES GB IT |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
17Q | First examination report despatched |
Effective date: 19981022 |
|
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 GB IT |
|
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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 19991222 Ref country code: GB Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19991222 Ref country code: ES Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY Effective date: 19991222 |
|
REF | Corresponds to: |
Ref document number: 69605816 Country of ref document: DE Date of ref document: 20000127 |
|
GBV | Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed] |
Effective date: 19991222 |
|
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: DE Payment date: 20101022 Year of fee payment: 15 |
|
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: 20130501 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 69605816 Country of ref document: DE Effective date: 20130501 |