EP1524425A1 - Control method for regeneration of a particle filter - Google Patents

Control method for regeneration of a particle filter Download PDF

Info

Publication number
EP1524425A1
EP1524425A1 EP04300673A EP04300673A EP1524425A1 EP 1524425 A1 EP1524425 A1 EP 1524425A1 EP 04300673 A EP04300673 A EP 04300673A EP 04300673 A EP04300673 A EP 04300673A EP 1524425 A1 EP1524425 A1 EP 1524425A1
Authority
EP
European Patent Office
Prior art keywords
regeneration
function
engine
dilution
filter
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
Application number
EP04300673A
Other languages
German (de)
French (fr)
Other versions
EP1524425B1 (en
Inventor
Vincent Brochon
Jean-Paul Fouet
Christian Ginoux
Jacques Lafite
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.)
Renault SAS
Original Assignee
Renault SAS
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 Renault SAS filed Critical Renault SAS
Publication of EP1524425A1 publication Critical patent/EP1524425A1/en
Application granted granted Critical
Publication of EP1524425B1 publication Critical patent/EP1524425B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F02D41/22—Safety or indicating devices for abnormal conditions
    • 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
    • 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
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/047—Taking into account fuel evaporation or wall wetting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/16—Controlling lubricant pressure or quantity
    • F01M2001/165—Controlling lubricant pressure or quantity according to fuel dilution in oil
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2250/00—Engine control related to specific problems or objectives
    • F02D2250/11—Oil dilution, i.e. prevention thereof or special controls according thereto
    • 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
    • F02D41/30—Controlling fuel injection
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
    • F02D41/401—Controlling injection timing

Definitions

  • the invention relates to a control method for the regeneration of a particulate filter equipping a power train of a vehicle.
  • the heterogeneity of combustion processes in lean-burn engines, especially in diesel engines, has the effect of generating carbon particles, which can not be burned effectively in the engine. This is explained by example by the appearance, at the exit of the line exhaust, black smoke. This phenomenon is a source of pollution that we seek to reduce.
  • Regeneration devices driven by a calculator allow you to periodically burn particles trapped in the filter and to avoid the clogging of the latter.
  • the soot particles are essentially carbonaceous elements, and their combustion consumes oxygen to form gas carbonic.
  • Triggering the regeneration of the filter is controlled by a calculator that determines if the regeneration must take place and when it is in course, if it can continue. For that, the calculator receives information about the operation of the vehicle. These informations include for example the temperatures of the liquid engine cooling, upstream gases and downstream of the particulate filter, the speed of the vehicle, the mass of soot accumulated in the filter particles and the distance traveled since the last regeneration.
  • the calculator checks conditions on these information and only triggers regeneration if all conditions are satisfied.
  • the regeneration is maintained, although some conditions are no longer satisfied for a period below a predetermined threshold, of the order of one to two minutes. If at least one condition is no longer satisfied for a duration greater than said threshold, then the regeneration process is interrupted.
  • the operating conditions of the engine are modified to increase the temperature of the gases exhaust before they pass through the filter particles. These changes often relate to fuel injection, which can be delayed for at least one cylinder of the engine. These modifications increase fuel consumption and also the amount of fuel that dissolves in the oil the engine, passing through the space between the cylinder and the piston.
  • the invention aims to object a method of controlling a system of motorization comprising a particle filter receiving engine exhaust to restrain the particles of the exhaust gases, the process handling information and controlling the engine to obtain the regeneration of the particulate filter when necessary, characterized in that the method establishes an estimate of the dilution rate of fuel in oil, the process allowing the regeneration if the estimate of the dilution ratio is less than a predetermined dilution threshold.
  • the variation of the dilution ratio is evaluated by a first representative function evaporation, fuel when no regeneration of the particulate filter is in progress, and by a second function when a regeneration Particle filter is in progress.
  • a first representative function evaporation fuel when no regeneration of the particulate filter is in progress
  • a second function when a regeneration Particle filter is in progress.
  • the second function is the sum of the first function and a third function.
  • the variation in the rate of dilution is evaluated according to the speed of rotation of the motor and a variable representing the engine load. Indeed these variables are very influential on the variation of the dilution rate.
  • variable representing the motor load is a flow of injected fuel.
  • the first and the second function are stored as mappings.
  • the functions can be implemented from simple way, after a phase of development of the motorization system.
  • a motorization system implementing the method according to the invention and shown in FIG. 1, comprises a supercharged Diesel engine 1 by a turbocharger 2 and whose gases exhaust are treated by a particulate filter catalytic converter 3.
  • Engine 1 is supplied with air by a air circuit comprising an air intake 11, a compressor 12 of the turbocharger 2, a pipe of discharge 13 and an intake manifold 14 opening into engine combustion chambers 1, with only one chamber 15 being shown.
  • a gas recycling circuit exhaust has a stitching 18 on the tubing exhaust, a selector valve 19 orienting the exhaust gases to the discharge pipe either through a cooler 20, or through a direct driving 21.
  • a calculator 24 receives information on the operation of the motorization system and command the engine 1. It implements in particular the process according to the invention.
  • the calculator 24 determines whether the regeneration must be piloted or not. For that, he establishes whether certain criteria are met. When all criteria are met, a control signal from the regeneration is delivered. The calculator maintains the control signal of the regeneration during a predetermined duration D1 after at least one criterion is no longer satisfied.
  • the calculator takes into account a criterion on the dilution rate Pdil of fuel in the engine oil.
  • the dilution ratio is estimated by the calculator, and if the rate estimate Pdil dilution is greater than a threshold of dilution Sdil predetermined, the criterion is no longer satisfied.
  • step initialization 30 the estimation of the dilution ratio Dpil is initialized to either a null value if the oil is new, ie to a value previously estimated and memorized.
  • step 32 point to a step 32 if no regeneration is in progress, or to a step 33 in the case opposite.
  • step 32 an estimate of variation the dilution ratio dPdil is calculated by the opposite of the product of a function Evapap of evaporation of the fuel and a time step dt.
  • the function Fevap is calculated from a stored map, depending on the speed of rotation N and the flow rate of fuel Qc.
  • step 33 the variation estimate the dilution ratio dPdil is calculated as step 32 with additionally adding the product of a regeneration function Grégé of a time step dt.
  • the Grégé regeneration function is also calculated from a stored map, in depending on the speed of rotation N and the flow rate of fuel Qc.
  • the new dilution ratio Pdil (n) is calculated by adding to the dilution rate at the time step previous Pdil (n-1) rate variation estimate Dilution dilution.
  • step 35 and 36 it is ensured that the rate of dilution will not become negative. Then at the stage 37, the dilution ratio Pdil is compared with the threshold of dilution Sdil predetermined: if it is higher, the criterion is not satisfied and regeneration is prohibited (step 38). Otherwise, a regeneration is allowed (step 39).
  • step 40 the flow of the step is awaited. time before proceeding to a new step of calculation, resuming at step 31.
  • the invention is not limited to the mode of realization which has just been described only in as an example. We can use other variables representative of the engine load, such as airflow or air pressure intake.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Processes For Solid Components From Exhaust (AREA)
  • Networks Using Active Elements (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Filtration Of Liquid (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)

Abstract

The process establishes an estimate of the dilution rate (Pdil) of fuel in oil and authorizes the regeneration when the estimate of the dilution rate is less than a preset dilution threshold. The process handles data and controls the engine to achieve regeneration of the particle filter when necessary. The variation in dilution rate (dPdil) is evaluated by a first function (-Fevap) representing the evaporation of the fuel while no regeneration of the filter is in progress, and by a second function while the filter is being regenerated. The second function is the sum of the first function and a third function (Grege). The variation in the dilution rate is evaluated as a function of the speed of rotation of the engine (N) and a variable representing the load on the engine (Qc), such as the flow of injected fuel. The functions are recorded in the form of graphs.

Description

L'invention concerne un procédé de commande pour la régénération d'un filtre à particules équipant un groupe motopropulseur d'un véhicule.The invention relates to a control method for the regeneration of a particulate filter equipping a power train of a vehicle.

L'hétérogénéité des processus de combustion dans les moteurs à mélange pauvre, en particulier dans les moteurs Diesel, a pour effet de générer des particules de carbone, qui ne peuvent être brûlées efficacement dans le moteur. Cela se traduit par exemple par l'apparition, en sortie de la ligne d'échappement, de fumées noires. Ce phénomène est une source de pollution que l'on cherche à réduire.The heterogeneity of combustion processes in lean-burn engines, especially in diesel engines, has the effect of generating carbon particles, which can not be burned effectively in the engine. This is explained by example by the appearance, at the exit of the line exhaust, black smoke. This phenomenon is a source of pollution that we seek to reduce.

La présence d'un filtre à particules dans la ligne d'échappement du moteur permet de diminuer considérablement la quantité de particules, poussières et autres suies, émises dans l'atmosphère, et de satisfaire aux normes antipollution.The presence of a particulate filter in the engine exhaust line helps decrease considerably the amount of particles, dust and other soot, emitted into the atmosphere, and comply with anti-pollution standards.

Des dispositifs de régénération pilotés par un calculateur permettent de brûler périodiquement les particules piégées dans le filtre et d'éviter le colmatage de ce dernier. Les particules de suies sont des éléments essentiellement carbonés, et leur combustion consomme de l'oxygène pour former du gaz carbonique.Regeneration devices driven by a calculator allow you to periodically burn particles trapped in the filter and to avoid the clogging of the latter. The soot particles are essentially carbonaceous elements, and their combustion consumes oxygen to form gas carbonic.

Ceci est effectué en élevant la température au sein du filtre à particules jusqu'à une température de l'ordre de 550 à 650 °C, température à partir de laquelle les particules de carbone retenues dans le filtre s'enflamment spontanément.This is done by raising the temperature to within the particulate filter to a temperature of the order of 550 to 650 ° C, temperature from which carbon particles retained in the filter ignite spontaneously.

Le déclenchement de la régénération du filtre est contrôlé par un calculateur qui détermine si la régénération doit avoir lieu et, quand elle est en cours, si elle peut continuer. Pour cela, le calculateur reçoit des informations sur le fonctionnement du véhicule. Ces informations comprennent par exemple les températures du liquide de refroidissement du moteur, des gaz en amont et en aval du filtre à particules, la vitesse du véhicule, la masse de suie accumulée dans le filtre à particules et la distance parcourue depuis la dernière régénération.Triggering the regeneration of the filter is controlled by a calculator that determines if the regeneration must take place and when it is in course, if it can continue. For that, the calculator receives information about the operation of the vehicle. These informations include for example the temperatures of the liquid engine cooling, upstream gases and downstream of the particulate filter, the speed of the vehicle, the mass of soot accumulated in the filter particles and the distance traveled since the last regeneration.

Le calculateur vérifie des conditions sur ces informations et ne déclenche la régénération que si toutes les conditions sont satisfaites. La régénération est maintenue, même si certaines conditions ne sont plus satisfaites pendant une durée inférieure à un seuil prédéterminé, de l'ordre d'une à deux minutes. Si au moins une condition n'est plus satisfaite pendant une durée supérieure audit seuil, alors le processus de régénération est interrompu.The calculator checks conditions on these information and only triggers regeneration if all conditions are satisfied. The regeneration is maintained, although some conditions are no longer satisfied for a period below a predetermined threshold, of the order of one to two minutes. If at least one condition is no longer satisfied for a duration greater than said threshold, then the regeneration process is interrupted.

Pour déclencher et. maintenir la régénération, les conditions de fonctionnement du moteur sont modifiées pour augmenter la température des gaz d'échappement avant leur passage dans le filtre à particules. Ces modifications concernent souvent l'injection de carburant, qui peut être retardée pour au moins un cylindre du moteur. Ces modifications augmentent la consommation de carburant et également la quantité de carburant qui se dissout dans l'huile du moteur, en passant par l'espace entre le cylindre et le piston.To trigger and. maintain regeneration, the operating conditions of the engine are modified to increase the temperature of the gases exhaust before they pass through the filter particles. These changes often relate to fuel injection, which can be delayed for at least one cylinder of the engine. These modifications increase fuel consumption and also the amount of fuel that dissolves in the oil the engine, passing through the space between the cylinder and the piston.

Avec une nouvelle génération de filtres à particules catalytiques, qui intègrent les fonctions de pot catalytique et de filtre à particules, on doit agir pendant toute la durée de la régénération pour maintenir les conditions permettant la combustion des suies piégées dans le filtre. Les inconvénients mentionnés précédemment sont donc prolongés pendant toute la durée de la régénération. De plus, ils sont aggravés dans certaines conditions de fonctionnement du moteur, dans lesquelles peu de chaleur est naturellement apportée aux gaz d'échappement.With a new generation of filters catalytic particles, which integrate the functions of catalytic converter and particulate filter, one must act throughout the regeneration period for maintain the conditions for the combustion of soot trapped in the filter. The inconvenients previously mentioned are therefore prolonged during the entire duration of the regeneration. In addition, they are aggravated under certain operating conditions of the engine, in which little heat is naturally brought to the exhaust.

L'augmentation de la quantité de carburant diluée dans l'huile du moteur a pour effet de faire varier les caractéristiques de l'huile, éventuellement jusqu'à un point où le moteur pourrait se détériorer.Increasing the amount of fuel diluted in the engine oil has the effect of making vary the characteristics of the oil, possibly to a point where the engine could deteriorate.

C'est donc un objectif de l'invention de proposer un procédé de commande d'un système de motorisation à moteur Diesel d'un véhicule comportant un filtre à particules limitant la dilution de carburant dans l'huile pour éviter de détériorer le moteur.It is therefore an objective of the invention of propose a method of controlling a system of engine with a diesel engine of a vehicle comprising a particulate filter limiting the dilution of fuel in the oil to avoid damaging the engine.

Avec ces objectifs en vue, l'invention a pour objet un procédé de commande d'un système de motorisation comportant un filtre à particules recevant des gaz d'échappement du moteur pour retenir les particules des gaz d'échappement, le procédé traitant des informations et commandant le moteur pour obtenir la régénération du filtre à particules lorsque nécessaire, caractérisé en ce que le procédé établit une estimation du taux de dilution de carburant dans l'huile, le procédé autorisant la régénération si l'estimation du taux de dilution est inférieur à un seuil de dilution prédéterminé.With these objectives in mind, the invention aims to object a method of controlling a system of motorization comprising a particle filter receiving engine exhaust to restrain the particles of the exhaust gases, the process handling information and controlling the engine to obtain the regeneration of the particulate filter when necessary, characterized in that the method establishes an estimate of the dilution rate of fuel in oil, the process allowing the regeneration if the estimate of the dilution ratio is less than a predetermined dilution threshold.

Ainsi, la régénération est interdite si le taux de dilution est trop important. Le moteur est préservé contre un risque de détérioration.Thus, regeneration is prohibited if the rate dilution is too important. The engine is preserved against a risk of deterioration.

De préférence, la variation du taux de dilution est évaluée par une première fonction représentative de l'évaporation, du carburant lorsque aucune régénération du filtre à particules n'est en cours, et par une deuxième fonction lorsqu'une régénération du filtre à particules est en cours. On simule bien ainsi la différence de comportement selon qu'une régénération est en cours ou non.Preferably, the variation of the dilution ratio is evaluated by a first representative function evaporation, fuel when no regeneration of the particulate filter is in progress, and by a second function when a regeneration Particle filter is in progress. We simulate well so the difference in behavior according to that regeneration is in progress or not.

Selon un perfectionnement, la deuxième fonction est la somme de la première fonction et d'une troisième fonction.According to an improvement, the second function is the sum of the first function and a third function.

De manière avantageuse, la variation du taux de dilution est évaluée en fonction de la vitesse de rotation du moteur et d'une variable représentant la charge du moteur. En effet ces variables sont très influentes sur la variation du taux de dilution.Advantageously, the variation in the rate of dilution is evaluated according to the speed of rotation of the motor and a variable representing the engine load. Indeed these variables are very influential on the variation of the dilution rate.

De manière particulière, la variable représentant la charge moteur est un débit de carburant injecté.In a particular way, the variable representing the motor load is a flow of injected fuel.

De préférence, la première et la deuxième fonction sont mémorisées sous forme de cartographies. Ainsi, les fonctions peuvent être mises en oeuvre de manière simple, après une phase de mise au point du système de motorisation.Preferably, the first and the second function are stored as mappings. Thus, the functions can be implemented from simple way, after a phase of development of the motorization system.

L'invention sera mieux comprise et d'autres particularités et avantages apparaítront à la lecture de la description qui va suivre, la description faisant référence aux dessins annexés parmi lesquels :

  • la figure 1 est une vue schématique d'un système de motorisation conforme à l'invention ;
  • la figure 2 est un organigramme de la commande de régénération du filtre à particules.
The invention will be better understood and other features and advantages will appear on reading the description which follows, the description referring to the appended drawings among which:
  • Figure 1 is a schematic view of a motorization system according to the invention;
  • Figure 2 is a flowchart of the regeneration control of the particulate filter.

Un système de motorisation mettant en oeuvre le procédé selon l'invention et représenté sur la figure 1, comporte un moteur 1 du type Diesel suralimenté par un turbocompresseur 2 et dont les gaz d'échappement sont traités par un filtre à particules catalytique 3. Le moteur 1 est alimenté en air par un circuit d'air comprenant une prise d'air 11, un compresseur 12 du turbocompresseur 2, une conduite de refoulement 13 et une tubulure d'admission 14 débouchant dans des chambres de combustion du moteur 1, une seule chambre 15 étant représentée.A motorization system implementing the method according to the invention and shown in FIG. 1, comprises a supercharged Diesel engine 1 by a turbocharger 2 and whose gases exhaust are treated by a particulate filter catalytic converter 3. Engine 1 is supplied with air by a air circuit comprising an air intake 11, a compressor 12 of the turbocharger 2, a pipe of discharge 13 and an intake manifold 14 opening into engine combustion chambers 1, with only one chamber 15 being shown.

Les gaz d'échappement E produits par la combustion sont évacués de la chambre 15 par une tubulure d'échappement 16, traversent une turbine 17 du turbocompresseur, puis le filtre à particules catalytique 3. Un circuit de recyclage des gaz d'échappement comporte un piquage 18 sur la tubulure d'échappement, une vanne de sélection 19 orientant les gaz d'échappement vers la conduite de refoulement soit en passant par un refroidisseur 20, soit par une conduite directe 21. The exhaust gases E produced by the combustion are removed from chamber 15 by a exhaust pipe 16, pass through a turbine 17 turbocharger, then the particulate filter catalytic 3. A gas recycling circuit exhaust has a stitching 18 on the tubing exhaust, a selector valve 19 orienting the exhaust gases to the discharge pipe either through a cooler 20, or through a direct driving 21.

Un calculateur 24 reçoit des informations sur le fonctionnement du système de motorisation et commande le moteur 1. Il met en oeuvre en particulier le procédé selon l'invention.A calculator 24 receives information on the operation of the motorization system and command the engine 1. It implements in particular the process according to the invention.

Le calculateur 24 détermine si la régénération doit être pilotée ou non. Pour cela, il établit si certains critères sont satisfaits. Lorsque tous les critères sont satisfaits, un signal de commande de la régénération est délivré. Le calculateur maintient le signal de commande de la régénération pendant une durée prédéterminée D1 après qu'au moins un critère n'est plus satisfait.The calculator 24 determines whether the regeneration must be piloted or not. For that, he establishes whether certain criteria are met. When all criteria are met, a control signal from the regeneration is delivered. The calculator maintains the control signal of the regeneration during a predetermined duration D1 after at least one criterion is no longer satisfied.

Selon l'invention, parmi les critères cités précédemment, le calculateur prend en compte un critère sur le taux de dilution Pdil de carburant dans l'huile du moteur. Le taux de dilution est estimé par le calculateur, et si l'estimation du taux de dilution Pdil est supérieure à un seuil de dilution Sdil prédéterminé, le critère n'est, plus satisfait.According to the invention, among the criteria cited previously, the calculator takes into account a criterion on the dilution rate Pdil of fuel in the engine oil. The dilution ratio is estimated by the calculator, and if the rate estimate Pdil dilution is greater than a threshold of dilution Sdil predetermined, the criterion is no longer satisfied.

Pour l'élaboration de ce critère, on se réfère à l'organigramme de la figure 2. Dans une étape d'initialisation 30, l'estimation du taux de dilution Dpil est initialisé soit à une valeur nulle si l'huile est neuve, soit à une valeur précédemment estimée et mémorisée. A l'étape de test 31, on oriente vers une étape 32 si aucune régénération n'est en cours, ou vers une étape 33 dans le cas contraire.For the development of this criterion, reference is made to the flowchart in Figure 2. In a step initialization 30, the estimation of the dilution ratio Dpil is initialized to either a null value if the oil is new, ie to a value previously estimated and memorized. At the test stage 31, point to a step 32 if no regeneration is in progress, or to a step 33 in the case opposite.

Lors de l'étape 32, une estimation de variation du taux de dilution dPdil est calculée par l'opposé du produit d'une fonction Févap d'évaporation du carburant et d'un pas de temps dt. La fonction Févap est calculée à partir d'une cartographie mémorisée, en fonction de la vitesse de rotation N et du débit de carburant Qc.In step 32, an estimate of variation the dilution ratio dPdil is calculated by the opposite of the product of a function Evapap of evaporation of the fuel and a time step dt. The function Fevap is calculated from a stored map, depending on the speed of rotation N and the flow rate of fuel Qc.

Lors de l'étape 33, l'estimation de variation du taux de dilution dPdil est calculée comme à l'étape 32 avec en plus l'ajout du produit d'une fonction de régénération Grégé d'un pas de temps dt. La fonction de régénération Grégé est également calculée à partir d'une cartographie mémorisée, en fonction de la vitesse de rotation N et du débit de carburant Qc.In step 33, the variation estimate the dilution ratio dPdil is calculated as step 32 with additionally adding the product of a regeneration function Grégé of a time step dt. The Grégé regeneration function is also calculated from a stored map, in depending on the speed of rotation N and the flow rate of fuel Qc.

Après l'évaluation de l'une des étapes 32 ou 33, le nouveau taux de dilution Pdil(n) est calculé en ajoutant au taux de dilution au pas de temps précédent Pdil(n-1) l'estimation de variation du taux de dilution dPdil.After the evaluation of one of the steps 32 or 33, the new dilution ratio Pdil (n) is calculated by adding to the dilution rate at the time step previous Pdil (n-1) rate variation estimate Dilution dilution.

Aux étapes 35 et 36, on s'assure que le taux de dilution ne deviendra pas négatif. Ensuite, à l'étape 37, le taux de dilution Pdil est comparé au seuil de dilution Sdil prédéterminé : s'il est supérieur, le critère n'est pas satisfait et une régénération est interdite (étape 38). Dans le cas contraire, une régénération est autorisée (étape 39).In steps 35 and 36, it is ensured that the rate of dilution will not become negative. Then at the stage 37, the dilution ratio Pdil is compared with the threshold of dilution Sdil predetermined: if it is higher, the criterion is not satisfied and regeneration is prohibited (step 38). Otherwise, a regeneration is allowed (step 39).

A l'étape 40, on attend l'écoulement du pas de temps dt avant de procéder à un nouveau pas de calcul, en reprenant à l'étape 31.At step 40, the flow of the step is awaited. time before proceeding to a new step of calculation, resuming at step 31.

L'invention n'est pas limitée au mode de réalisation qui vient d'être décrit uniquement à titre d'exemple. On pourra utiliser d'autres variables représentative de la charge du moteur, telle que le débit d'air ou la pression d'air d'admission.The invention is not limited to the mode of realization which has just been described only in as an example. We can use other variables representative of the engine load, such as airflow or air pressure intake.

Claims (6)

Procédé de commande d'un système de motorisation comportant un moteur (1), un filtre à particules (3) recevant des gaz d'échappement du moteur (1) pour retenir les particules des gaz d'échappement, le procédé traitant des informations et commandant le moteur (1) pour obtenir la régénération du filtre à particules (3) lorsque nécessaire, caractérisé en ce que le procédé établit une estimation du taux de dilution (Pdil) de carburant dans l'huile, le procédé autorisant la régénération si l'estimation du taux de dilution (Pdil) est inférieur à un seuil de dilution prédéterminé (Sdil).A method of controlling a drive system comprising a motor (1), a particulate filter (3) receiving engine exhaust gases (1) for retaining the exhaust particles, the method processing the information and controlling the engine (1) to obtain the regeneration of the particulate filter (3) when necessary, characterized in that the method establishes an estimate of the dilution ratio (Pdil) of fuel in the oil, the process allowing the regeneration if the estimate of the dilution ratio (Pdil) is below a predetermined dilution threshold (Sdil). Procédé de commande selon la revendication 1, dans lequel la variation du taux de dilution (dPdil) est évaluée par une première fonction (-Févap) représentative de l'évaporation du carburant lorsque aucune régénération du filtre à particules n'est en cours, et par une deuxième fonction lorsqu'une régénération du filtre à particules est en cours.Control method according to claim 1, wherein the variation in the rate of dilution (dPdil) is evaluated by a first function (-Fevap) representative of the evaporation of fuel when no regeneration of the filter at particles is in progress, and by a second function when a regeneration of the filter to particles is in progress. Procédé de commande selon la revendication 2, dans lequel la deuxième fonction est la somme de la première fonction (-Févap) et d'une troisième fonction (Grégé).Control method according to claim 2, wherein the second function is the sum of the first function (-Fevap) and a third function (Grégé). Procédé de commande selon l'une des revendications 1 à 3, dans lequel la variation du taux de dilution (dPdil) est évaluée en fonction de la vitesse de rotation du moteur (N) et d'une variable représentant la charge du moteur (Qc).Control method according to one of Claims 1 to 3, wherein the variation of dilution rate (dPdil) is evaluated according to the speed of rotation of the motor (N) and a variable representing the load of the motor (Qc). Procédé de commande selon la revendication 4, dans lequel la variable représentant la charge moteur est un débit de carburant injecté (Qc).Control method according to claim 4, wherein the variable representing the engine load is an injected fuel flow (Qc). Procédé de commande selon la revendication 2 ou 3, dans lequel les fonctions (Févap, Grégé) sont mémorisées sous forme de cartographies.Control method according to claim 2 or 3, wherein the functions (Feévap, Grégé) are stored in the form of maps.
EP04300673A 2003-10-13 2004-10-11 Control method for regeneration of a particle filter Active EP1524425B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0311926A FR2860830B1 (en) 2003-10-13 2003-10-13 CONTROL METHOD FOR REGENERATING A PARTICLE FILTER
FR0311926 2003-10-13

Publications (2)

Publication Number Publication Date
EP1524425A1 true EP1524425A1 (en) 2005-04-20
EP1524425B1 EP1524425B1 (en) 2006-05-17

Family

ID=34355418

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04300673A Active EP1524425B1 (en) 2003-10-13 2004-10-11 Control method for regeneration of a particle filter

Country Status (5)

Country Link
EP (1) EP1524425B1 (en)
AT (1) ATE326624T1 (en)
DE (1) DE602004000902T2 (en)
ES (1) ES2259436T3 (en)
FR (1) FR2860830B1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1722087A2 (en) 2005-05-13 2006-11-15 HONDA MOTOR CO., Ltd. Exhaust gas purifying apparatus for internal combustion engine
FR2890411A1 (en) * 2005-09-05 2007-03-09 Peugeot Citroen Automobiles Sa SYSTEM FOR DETERMINING THE DILUTION RATE OF THE LUBRICATING OIL OF A MOTOR VEHICLE HEAT ENGINE BY FUEL FUEL THEREOF
EP1798404A1 (en) * 2005-12-14 2007-06-20 Nissan Motor Co., Ltd. Post injection control of internal combustion engine
WO2008056231A2 (en) * 2006-11-09 2008-05-15 Toyota Jidosha Kabushiki Kaisha Vehicle diesel engine and control method of the same
FR2933735A1 (en) * 2008-07-08 2010-01-15 Peugeot Citroen Automobiles Sa Exhaust gas post-treatment system's regeneration controlling method for internal combustion engine of motor vehicle, involves considering rate of fuel in lubricant for controlling regeneration of post-treatment system
FR3040738A1 (en) * 2015-09-07 2017-03-10 Peugeot Citroen Automobiles Sa METHOD FOR CONTROLLING A DILUTION OF A FUEL IN A LUBRICATING OIL OF A THERMAL MOTOR OF A MOTOR VEHICLE

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007031355A1 (en) * 2007-07-05 2009-01-08 Ford Global Technologies, LLC, Dearborn Exhaust gas treatment device i.e. nitrogen oxide adsorber, regeneration procedure controlling method for use in motor vehicle, involves generating regeneration request when predicted values lie below pre-determined threshold values
DE102007034822A1 (en) * 2007-07-26 2009-01-29 Ford Global Technologies, LLC, Dearborn Method for controlling regeneration operation of pollutant catalyst or particle filter of exhaust gas system, involves selecting activation rules depending on detection of respective operating characteristic
FR2941909B1 (en) * 2009-02-10 2011-02-18 Renault Sas METHOD AND DEVICE FOR CONTROLLING A MOTORIZATION SYSTEM FOR A MOTOR VEHICLE
FR2974853B1 (en) 2011-05-06 2015-05-01 Renault Sa METHOD OF ESTIMATING DILUTION OF FUEL IN THE OIL OF AN INTERNAL COMBUSTION ENGINE

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1281852A2 (en) * 2001-08-03 2003-02-05 C.R.F. Società Consortile per Azioni Method of initiating regeneration of a particulate filter for a direct-injection diesel engine with a common rail injection system
EP1308617A1 (en) * 2001-11-05 2003-05-07 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Control device and method for a diesel engine
US20030168039A1 (en) * 2001-12-04 2003-09-11 Oliver Ebelsheiser Method for operating an internal combustion engine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1281852A2 (en) * 2001-08-03 2003-02-05 C.R.F. Società Consortile per Azioni Method of initiating regeneration of a particulate filter for a direct-injection diesel engine with a common rail injection system
EP1308617A1 (en) * 2001-11-05 2003-05-07 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Control device and method for a diesel engine
US20030168039A1 (en) * 2001-12-04 2003-09-11 Oliver Ebelsheiser Method for operating an internal combustion engine

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1722087A2 (en) 2005-05-13 2006-11-15 HONDA MOTOR CO., Ltd. Exhaust gas purifying apparatus for internal combustion engine
EP1722087A3 (en) * 2005-05-13 2008-08-13 HONDA MOTOR CO., Ltd. Exhaust gas purifying apparatus for internal combustion engine
US7611567B2 (en) 2005-05-13 2009-11-03 Honda Motor Co., Ltd. Exhaust gas purifying apparatus for internal combustion engine
FR2890411A1 (en) * 2005-09-05 2007-03-09 Peugeot Citroen Automobiles Sa SYSTEM FOR DETERMINING THE DILUTION RATE OF THE LUBRICATING OIL OF A MOTOR VEHICLE HEAT ENGINE BY FUEL FUEL THEREOF
WO2007028919A1 (en) * 2005-09-05 2007-03-15 Peugeot Citroen Automobiles Sa System for determining rate of dilution of a motor vehicle heat engine lubricating oil by the supply fuel thereof
EP1798404A1 (en) * 2005-12-14 2007-06-20 Nissan Motor Co., Ltd. Post injection control of internal combustion engine
US7779622B2 (en) 2005-12-14 2010-08-24 Nissan Motor Co., Ltd. Post injection control of internal combustion engine
WO2008056231A2 (en) * 2006-11-09 2008-05-15 Toyota Jidosha Kabushiki Kaisha Vehicle diesel engine and control method of the same
WO2008056231A3 (en) * 2006-11-09 2008-07-03 Toyota Motor Co Ltd Vehicle diesel engine and control method of the same
US8087233B2 (en) 2006-11-09 2012-01-03 Toyota Jidosha Kabushiki Kaisha Vehicle diesel engine and control method of the same
FR2933735A1 (en) * 2008-07-08 2010-01-15 Peugeot Citroen Automobiles Sa Exhaust gas post-treatment system's regeneration controlling method for internal combustion engine of motor vehicle, involves considering rate of fuel in lubricant for controlling regeneration of post-treatment system
FR3040738A1 (en) * 2015-09-07 2017-03-10 Peugeot Citroen Automobiles Sa METHOD FOR CONTROLLING A DILUTION OF A FUEL IN A LUBRICATING OIL OF A THERMAL MOTOR OF A MOTOR VEHICLE

Also Published As

Publication number Publication date
DE602004000902D1 (en) 2006-06-22
ES2259436T3 (en) 2006-10-01
ATE326624T1 (en) 2006-06-15
FR2860830A1 (en) 2005-04-15
EP1524425B1 (en) 2006-05-17
DE602004000902T2 (en) 2007-04-26
FR2860830B1 (en) 2006-01-13

Similar Documents

Publication Publication Date Title
FR2899932A1 (en) METHOD AND DEVICE FOR CONTROLLING THE REGENERATION OF A DEPOLLUTION SYSTEM
EP1524425B1 (en) Control method for regeneration of a particle filter
EP1694953B1 (en) Method for controlling the regeneration of a particulate filter
FR3070431A1 (en) EXHAUST GAS PURIFYING SYSTEM FOR INTERNAL COMBUSTION ENGINE
EP1877657B1 (en) Method of controlling a vehicle engine in order to regulate the temperature of a particle filter
EP3402975B1 (en) Method for managing a turbocharged motor vehicle engine
EP1650420B1 (en) System and method for regulation of the particulate filter regeneration of an internal combustion engine
FR2914945A3 (en) Fuel dilution ratio estimating method for diesel type internal combustion engine, involves reducing dilution ratio having threshold value, which is fraction of dilution ratio estimated at end of regeneration phase
EP3601764B1 (en) Improved cleaning installation for an internal combustion engine
EP1106804B1 (en) Control method for a motor vehicle drive unit to increase the richness of the exhaust gas during regeneration of a nitrogen oxide trap
EP2078839B1 (en) Quick-heating strategy to compensate for the aging of an oxidation catalyst in a diesel engine.
EP2718552B1 (en) Method of regenerating a particulate filter for a motor vehicle
EP3546716B1 (en) Method and device for controlling the regeneration of a particulate filter
WO2019058040A1 (en) Method for regenerating a particulate filter for a heat engine
FR2860832A1 (en) Controlling engine with particle filter for engine exhaust gases, comprises use of criterion indicating stable engine operation to define when to regenerate filter
FR2878566A1 (en) METHOD AND DEVICE FOR STOPPING A PARTICLE FILTER REGENERATION OF DIESEL MOTOR OF MOTOR VEHICLE
FR2928686A3 (en) Post-treatment device i.e. particle filter, regenerating method for oil engine of motor vehicle, involves modifying engine distribution curve by modifying opening and/or closing angles of valves for improving pumping work of engine
FR2877039A1 (en) Regeneration of particle filter mounted in exhaust line of automobile engine comprises initiating process when level of contamination of filter exceeds predetermined value, with temperature of filter increased to burn off particles
FR2846049A1 (en) METHOD FOR REGENERATING A PARTICLE FILTER AND DEVICE FOR IMPLEMENTING IT
FR2876737A1 (en) Particle filter`s regeneration phase controlling system for motor vehicle, has control system for interrupting regeneration phase of filter when temperature rise, detected in downstream of filter during phase, is lesser than threshold value
WO2006042987A1 (en) System and method for regulating and regenerating a particulate filter of an internal combustion engine
EP1418324A2 (en) Method and apparatus for the regeneration of a particle filter
FR2897640A1 (en) Particle filter regenerating method for e.g. diesel type internal combustion engine, involves adjusting temperature of exhaust gas to value higher than or equal to temperature necessary for regeneration of filter
FR2879655A1 (en) Re-generation control system for particle filter installed in exhaust channel of automobile vehicle, especially diesel engine, comprises memory unit, comparison device, identification device, and device for establishing inlet temperature
EP1491750A1 (en) Method and apparatus for regenerating a catalytic particulate filter

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL HR LT LV MK

17P Request for examination filed

Effective date: 20050728

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

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

Ref country code: PL

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: 20060517

Ref country code: CZ

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: 20060517

Ref country code: IE

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: 20060517

Ref country code: NL

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: 20060517

Ref country code: SK

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: 20060517

Ref country code: AT

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: 20060517

Ref country code: RO

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: 20060517

Ref country code: FI

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: 20060517

Ref country code: SI

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: 20060517

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: 20060517

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

REF Corresponds to:

Ref document number: 602004000902

Country of ref document: DE

Date of ref document: 20060622

Kind code of ref document: P

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

Effective date: 20060726

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060817

Ref country code: DK

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: 20060817

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2259436

Country of ref document: ES

Kind code of ref document: T3

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

Ref country code: PT

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: 20061017

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

Ref country code: MC

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

Effective date: 20061031

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

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

Effective date: 20070220

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20070629

BERE Be: lapsed

Owner name: RENAULT S.A.S.

Effective date: 20061031

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

Ref country code: GR

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: 20060818

Ref country code: FR

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

Effective date: 20061031

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

Ref country code: EE

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: 20060517

Ref country code: BG

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: 20060817

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

Ref country code: TR

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: 20060517

Ref country code: HU

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: 20061118

Ref country code: LU

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

Effective date: 20061011

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

Ref country code: CY

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: 20060517

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: BE

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: 20061031

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

Ref country code: LI

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

Effective date: 20081031

Ref country code: CH

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

Effective date: 20081031

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

Ref country code: GB

Payment date: 20211022

Year of fee payment: 18

Ref country code: ES

Payment date: 20211223

Year of fee payment: 18

Ref country code: DE

Payment date: 20211020

Year of fee payment: 18

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602004000902

Country of ref document: DE

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

Effective date: 20221011

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: 20230503

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: 20221011

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20231127

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: 20221012

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: 20221012