WO2006016090A1 - Procede de gestion de la regeneration d'un filtre a particules - Google Patents
Procede de gestion de la regeneration d'un filtre a particules Download PDFInfo
- Publication number
- WO2006016090A1 WO2006016090A1 PCT/FR2005/050581 FR2005050581W WO2006016090A1 WO 2006016090 A1 WO2006016090 A1 WO 2006016090A1 FR 2005050581 W FR2005050581 W FR 2005050581W WO 2006016090 A1 WO2006016090 A1 WO 2006016090A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- filter
- tefap
- catalytic
- temperature
- regeneration
- 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.)
- Ceased
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
- F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors
-
- 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
- F02D41/021—Introducing corrections for particular conditions exterior to the engine
- F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
- F02D41/024—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to increase temperature of the exhaust gas treating apparatus
- F02D41/0245—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to increase temperature of the exhaust gas treating apparatus by increasing temperature of the exhaust gas leaving the engine
-
- 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
- F02D41/021—Introducing corrections for particular conditions exterior to the engine
- F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
- F02D41/027—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus
- F02D41/029—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus the exhaust gas treating apparatus being a particulate filter
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N2430/00—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics
- F01N2430/08—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics by modifying ignition or injection timing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N2430/00—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics
- F01N2430/08—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics by modifying ignition or injection timing
- F01N2430/085—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics by modifying ignition or injection timing at least a part of the injection taking place during expansion or exhaust stroke
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Definitions
- the invention relates to the depollution of diesel engines. More specifically, it relates to the management of the regeneration of a particulate filter, or FAP, exhaust line provided with a catalytic member, by regulating the temperature at the inlet of the filter.
- Regeneration of the particulate filter by combustion of soot pollutants, or particles, contained therein, is generally performed through delayed injections (after the top dead center) of fuel.
- a catalytic member (either in the form of an oxidation catalyst upstream of the filter, or in the form of a catalytic material disposed within the filter), for oxidizing the reducing elements (HC, CO, H ⁇ ), the fuel injected late, which has not burned in the combustion chamber, burns in the catalytic part of the exhaust line.
- the regeneration of the filter is managed by regulating its inlet temperature. That is to say that You modify the quantity and / or the delay of the injections of gas oil, so as to have a temperature at the input of the FAP as close as possible (equal in absolute terms) to a temperature setpoint allowing the regeneration the FAP, while protecting the latter from possible deterioration due to the runaway of soot combustion reactions.
- This technique therefore makes it possible to control the thermal inputs upstream of the FAP, but without taking into account the contributions of HC and CO upstream of the catalyst.
- the present invention aims to overcome this major disadvantage, and to prevent the risk of temperature runaway within the catalytic body.
- the limitation of the temperature gradient across the catalytic member is imposed if the latter exceeds a threshold presenting a risk of degradation for the catalytic member.
- the gradient is limited by reducing the amount of fuel injected late after the top dead center (HWP) because it creates little input heat of the particulate filter, but brings a lot of HC and CO 1 responsible for the temperature gradient at the terminals of the catalytic organ.
- HWP top dead center
- FIG. 1 there is shown a catalytic particle filter 1, that is to say containing catalytic materials (not shown), for example platinum, to oxidize HC and CO mainly from the late injections.
- a temperature sensor 2 measuring the temperature at the inlet of the TeF ⁇ P filter.
- no output temperature sensor has been shown because the downstream temperature of the filter can advantageously be calculated on the basis of a conventional statistical model.
- the engine has a turbo 3 and a circuit BGk 4 (Exhaust Gas Recirculation).
- the diagram also shows a cylinder 6 of the engine with its fuel injector 7, its intake duct 8 and its exhaust duct 9. These two ducts are connected by the ESR circuit 4, with its EeR valve 4a.
- the intake duct 8 has a flowmeter 8a, a collector pressure sensor 8b and an intake flap 8c, II opens into an intake manifold 9.
- the circuit comprises a turbo ⁇ compressor 3 disposed between the ducts 8, 9.
- no oxidation catalyst has been shown, since it is assumed that a large quantity of catalytic material is disposed directly inside the filter (it is is therefore a catalytic particle filter). But the invention applies under the same conditions, if the catalyst is juxtaposed upstream of the filter.
- at least one delayed injection is carried out in the combustion chambers of the engine, which has the effect of increasing the temperature of the gases or the exhaust.
- the main injection is eventually followed by one or more late injections.
- the late-injected gas oil does not burn in the combustion chamber, but in the catalytic part of the exhaust line, where HC and CO oxidize by increasing the temperature of the gases.
- the late injection also has the effect of increasing the input / output temperature gradient of the catalyst.
- the Vmventlon method illustrated in FIG. 2 proposes controlling this temperature gradient during the regeneration phases. Specifically, it is expected to regulate the amount of gasoil injected late, preferably after the top dead center, so as to maintain between the inlet and the outlet of the catalytic member, a permissible temperature gradient; although it is no longer reached, in some cases, the temperature set point of regeneration temperature FAP, this arrangement makes it possible to preserve the catalyst from cracks due to a too high temperature gradient.
- the proposed solution has the advantage of taking into account the effect of the contributions of HC, CO in the management of the regeneration of the FAP.
- the engine of the vehicle may be equipped with an ESR system, a turbocharger and / or an intake flap, within the scope of the invention the engine may also have, a common high-pressure intake manifold or an injection system direct.
- the invention applies under the same conditions in the absence of one or more of these elements.
- the management of the regeneration of the FAP is ensured by a regulation of the temperature at the inlet of the TeFAP filter. That is to say that the quantity and / or the delay of the injections of gas oil is modified, so as to have an inlet temperature of FAP TeFAP, as close as possible (equal in absolute terms) to a set temperature given, allowing the regeneration of the FAP while protecting, as much as possible, a deterioration by runaway reaction.
- the difference (C) between the setpoint (A) and the measured temperature value (B) of the TeFAP filter (t) is continuously calculated.
- the engine calculator deduces a first injection pattern (D).
- the occurrence of the input / output temperature gradient (E) of the catalytic element is monitored at each occurrence of the computer. If this gradient exceeds a certain threshold (F), deviation ( ⁇ ) - (E) - (F) ⁇ 0, the computer imposes a second injection pattern to limit the amount of gas oil injected late to maintain the gradient (E) below the threshold (F).
- the threshold (F) depends on the materials used in the catalyst.
- the inlet and outlet temperatures of the catalytic member can be indifferently determined by means of sensors, or by physical or statistical modeling (for example by neural networks).
- This method has very large advantages for managing the regeneration of a FAP, because it provides in a simple way the protection of the catalytic member of the exhaust line, minimizing the impact of protection on the course of the regeneration.
- the catalytic member generally has a high thermal inertia, so that modifications of the fuel injection exert their influence on the temperature gradient only after a certain lapse of time.
- the thermal inertia of the catalytic element must be taken into account in the control loop to avoid any risk of deterioration.
- Another safety margin will have to be introduced to take into account that on a part of the operating field of the engine (especially at low loads), it is practically impossible to cancel the temperature gradient, even when stopping any late injection. because after stopping the late injection, the outlet temperature of the catalytic member may remain a few tens of degrees higher than the inlet temperature.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0451575A FR2873160B1 (fr) | 2004-07-19 | 2004-07-19 | Procede de gestion de la regeneration d'un filtre a particules |
| FR0451575 | 2004-07-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006016090A1 true WO2006016090A1 (fr) | 2006-02-16 |
Family
ID=34949508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2005/050581 Ceased WO2006016090A1 (fr) | 2004-07-19 | 2005-07-13 | Procede de gestion de la regeneration d'un filtre a particules |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR2873160B1 (fr) |
| WO (1) | WO2006016090A1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2942501A1 (fr) * | 2009-02-20 | 2010-08-27 | Renault Sas | Dispositif et procede de pilotage d'une montee en temperature d'un filtre a particules de vehicule automobile. |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2910535B1 (fr) * | 2006-12-21 | 2009-09-04 | Renault Sas | Moteur a combustion interne pour vehicule automobile comprenant un dispositif de filtrage et procede de controle correspondant |
| FR2911920B1 (fr) * | 2007-01-25 | 2009-04-10 | Peugeot Citroen Automobiles Sa | Procede et systeme de limitation de la temperature a l'echappement d'un moteur diesel. |
| US8826647B2 (en) * | 2010-04-27 | 2014-09-09 | GM Global Technology Operations LLC | Electrically heated filter regeneration methods and systems |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4881369A (en) * | 1986-05-27 | 1989-11-21 | Nissan Motor Company, Limited | Exhaust gas purifying apparatus |
| JPH0336419A (ja) * | 1989-06-30 | 1991-02-18 | Hitachi Ltd | 触媒燃焼器用燃料制御方法 |
| EP0442648A2 (fr) * | 1990-02-14 | 1991-08-21 | Lucas Industries Public Limited Company | Procédé et appareil pour contrôler le fonctionnement d'un converteur catalytique |
| DE4227207A1 (de) * | 1992-08-17 | 1994-02-24 | Emitec Emissionstechnologie | Katalysatorüberprüfung mittels Störgrößenverarbeitung |
| US5447696A (en) * | 1993-06-29 | 1995-09-05 | Toyota Jidosha Kabushiki Kaisha | Electrically heated catalytic converter system for an engine |
| EP0743429A2 (fr) * | 1995-05-18 | 1996-11-20 | Toyota Jidosha Kabushiki Kaisha | Dispositif de purification des gaz d'échappement d'un moteur diesel |
| US5592815A (en) * | 1994-11-11 | 1997-01-14 | Volkswagen Ag | Process for monitoring the conversion rate of an exhaust catalyst |
| US5647205A (en) * | 1993-03-19 | 1997-07-15 | Siemens Aktiengesellschaft | Process for checking the conversion capability of a catalyst |
| FR2774427A1 (fr) * | 1998-02-02 | 1999-08-06 | Peugeot | Systeme d'aide a la regeneration d'un filtre a particules integre dans une ligne d'echappement de moteur diesel notamment pour vehicule automobile |
| FR2804168A1 (fr) * | 2000-01-20 | 2001-07-27 | Peugeot Citroen Automobiles Sa | Systeme d'aide a la regeneration d'un filtre a particules integre dans une ligne d'echappement d'un moteur diesel de vehicule automobile |
| FR2829526A1 (fr) * | 2001-09-12 | 2003-03-14 | Volkswagen Ag | Regeneration d'un filtre a particules d'un moteur diesel |
| EP1344906A2 (fr) * | 2002-03-12 | 2003-09-17 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Dispositif de commande des émissions d'un moteur |
| US20040112044A1 (en) * | 2001-03-17 | 2004-06-17 | Holger Plote | Method and device for monitoring an exhaust gas treatment system |
| EP1431530A1 (fr) * | 2002-12-16 | 2004-06-23 | Nissan Motor Company, Limited | Dispositif de régénération d'un filtre à particules |
-
2004
- 2004-07-19 FR FR0451575A patent/FR2873160B1/fr not_active Expired - Lifetime
-
2005
- 2005-07-13 WO PCT/FR2005/050581 patent/WO2006016090A1/fr not_active Ceased
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4881369A (en) * | 1986-05-27 | 1989-11-21 | Nissan Motor Company, Limited | Exhaust gas purifying apparatus |
| JPH0336419A (ja) * | 1989-06-30 | 1991-02-18 | Hitachi Ltd | 触媒燃焼器用燃料制御方法 |
| EP0442648A2 (fr) * | 1990-02-14 | 1991-08-21 | Lucas Industries Public Limited Company | Procédé et appareil pour contrôler le fonctionnement d'un converteur catalytique |
| DE4227207A1 (de) * | 1992-08-17 | 1994-02-24 | Emitec Emissionstechnologie | Katalysatorüberprüfung mittels Störgrößenverarbeitung |
| US5647205A (en) * | 1993-03-19 | 1997-07-15 | Siemens Aktiengesellschaft | Process for checking the conversion capability of a catalyst |
| US5447696A (en) * | 1993-06-29 | 1995-09-05 | Toyota Jidosha Kabushiki Kaisha | Electrically heated catalytic converter system for an engine |
| US5592815A (en) * | 1994-11-11 | 1997-01-14 | Volkswagen Ag | Process for monitoring the conversion rate of an exhaust catalyst |
| EP0743429A2 (fr) * | 1995-05-18 | 1996-11-20 | Toyota Jidosha Kabushiki Kaisha | Dispositif de purification des gaz d'échappement d'un moteur diesel |
| FR2774427A1 (fr) * | 1998-02-02 | 1999-08-06 | Peugeot | Systeme d'aide a la regeneration d'un filtre a particules integre dans une ligne d'echappement de moteur diesel notamment pour vehicule automobile |
| FR2804168A1 (fr) * | 2000-01-20 | 2001-07-27 | Peugeot Citroen Automobiles Sa | Systeme d'aide a la regeneration d'un filtre a particules integre dans une ligne d'echappement d'un moteur diesel de vehicule automobile |
| US20040112044A1 (en) * | 2001-03-17 | 2004-06-17 | Holger Plote | Method and device for monitoring an exhaust gas treatment system |
| FR2829526A1 (fr) * | 2001-09-12 | 2003-03-14 | Volkswagen Ag | Regeneration d'un filtre a particules d'un moteur diesel |
| EP1344906A2 (fr) * | 2002-03-12 | 2003-09-17 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Dispositif de commande des émissions d'un moteur |
| EP1431530A1 (fr) * | 2002-12-16 | 2004-06-23 | Nissan Motor Company, Limited | Dispositif de régénération d'un filtre à particules |
Non-Patent Citations (1)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 015, no. 171 (M - 1108) 30 April 1991 (1991-04-30) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2942501A1 (fr) * | 2009-02-20 | 2010-08-27 | Renault Sas | Dispositif et procede de pilotage d'une montee en temperature d'un filtre a particules de vehicule automobile. |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2873160A1 (fr) | 2006-01-20 |
| FR2873160B1 (fr) | 2008-02-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| FR2899932A1 (fr) | Procede et dispositif de controle de la regeneration d'un systeme de depollution | |
| EP2092168B1 (fr) | Procede de determination de la quantite de carburant a injecter dans une ligne d'echappement en vue de regenerer un filtre a particules | |
| FR2833994A1 (fr) | Procede et dispositif de controle de l'etat de fonctionnement d'un convertisseur catalytique d'une ligne d'echappement d'un moteur a combustion interne | |
| US20190264594A1 (en) | Increase aftertreatment temperature during light load operation | |
| EP1836380A1 (fr) | Procede et dispositif de regeneration d'un filtre a particules integre dans une ligne d'echappement d'un moteur a combustion interne | |
| FR2873160A1 (fr) | Procede de gestion de la regeneration d'un filtre a particules | |
| EP1524425B1 (fr) | Procédé de commande pour la régénération d'un filtre à particules | |
| FR3062418A1 (fr) | Procede de controle des emissions d'oxydes d'azote a l'echappement d'un moteur a combustion interne | |
| EP2401495B1 (fr) | Procede de gestion de l'arret automatique du moteur d'un vehicule automobile | |
| FR2880914A1 (fr) | Ligne d'echappement pour moteur de vehicule automobile | |
| FR2928967A1 (fr) | Regeneration sans surchauffe d'un dispositif de post-traitement de vehicule automobile | |
| WO2008037902A1 (fr) | Dispositif de commande d'un ensemble moteur a moteur diesel permettant une strategie de regeneration du filtre a particules amelioree | |
| EP1877657B1 (fr) | Procede de commande d'un moteur de vehicule pour reguler la temperature d'un filtre a particules | |
| EP1650420B1 (fr) | Système et procédé de régularisation de la régénération d'un filtre à particules de moteur à combustion interne | |
| EP2946098A1 (fr) | Système de traitement des gaz d'échappement d'un moteur sur un véhicule automobile et son procédé de commande | |
| WO2020083826A1 (fr) | Procede de coordination de consignes de suralimentation et de recirculation des gaz d'echappement dans un dispositif de traction pour vehicule automobile | |
| FR2907162A3 (fr) | Procede et dispositif de controle d'un systeme de depollution et vehicule muni du dispositif | |
| EP3816416B1 (fr) | Procédé de régénération d'un piège à oxydes d azote de moteur à combustion interne équipé d'un catalyseur de réduction sélective des oxydes d azote | |
| EP2718552B1 (fr) | Procédé de régénération d'un filtre à particules pour véhicule automobile | |
| FR2981690A3 (fr) | Procede de depollution d'un moteur a combustion interne et moteur a combustion interne fonctionnant a richesse 1 | |
| EP1759100B1 (fr) | Procede de controle de la regeneration d'un filtre a particules | |
| FR3088957A1 (fr) | Dispositif et procédé de commande de la régénération d'un filtre à particules d'une ligne d'échappement d'un moteur à combustion interne | |
| FR3029571A3 (fr) | Procede de controle d'un dispositif de motorisation et dispositif de motorisation associe | |
| EP2444640A1 (fr) | Procédé de commande de la régéneration d'un filtre à particules | |
| FR2942501A1 (fr) | Dispositif et procede de pilotage d'une montee en temperature d'un filtre a particules de vehicule automobile. |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KM KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NG NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
| AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU LV MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |