EP0646712A1 - Dispositif pour modifier le couple moteur dans des états de fonctionnement particuliers d'un moteur à combustion interne - Google Patents

Dispositif pour modifier le couple moteur dans des états de fonctionnement particuliers d'un moteur à combustion interne Download PDF

Info

Publication number
EP0646712A1
EP0646712A1 EP94115403A EP94115403A EP0646712A1 EP 0646712 A1 EP0646712 A1 EP 0646712A1 EP 94115403 A EP94115403 A EP 94115403A EP 94115403 A EP94115403 A EP 94115403A EP 0646712 A1 EP0646712 A1 EP 0646712A1
Authority
EP
European Patent Office
Prior art keywords
engine
value
block
threshold value
conditions
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
EP94115403A
Other languages
German (de)
English (en)
Other versions
EP0646712B1 (fr
Inventor
Stefano Scolari
Giancarlo Ricciardelli
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.)
Marelli Europe SpA
Original Assignee
Weber SRL
Magneti Marelli SpA
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 Weber SRL, Magneti Marelli SpA filed Critical Weber SRL
Publication of EP0646712A1 publication Critical patent/EP0646712A1/fr
Application granted granted Critical
Publication of EP0646712B1 publication Critical patent/EP0646712B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/12—Introducing corrections for particular operating conditions for deceleration
    • F02D41/123—Introducing corrections for particular operating conditions for deceleration the fuel injection being cut-off
    • F02D41/126—Introducing corrections for particular operating conditions for deceleration the fuel injection being cut-off transitional corrections at the end of the cut-off period
    • 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
    • F02D41/12—Introducing corrections for particular operating conditions for deceleration
    • F02D41/123—Introducing corrections for particular operating conditions for deceleration the fuel injection being cut-off

Definitions

  • the present invention relates to a system for varying the drive torque of a heat engine of a vehicle in particular operating conditions.
  • the system forming the subject of the present invention relates to a control strategy for controlling the introduction of fuel into the cylinders of the engine, causing it to change from a normal fuel-delivery condition to a fuel cut-off condition and vice versa.
  • the object of the present invention is that of providing a system for varying the drive torque in particular operating conditions of a heat engine of a motor vehicle, which will be free from the above mentioned disadvantages and which, therefore, reduces the engine vibrations upon change from a normal fuel-delivery condition to a fuel cut-off condition and vice versa.
  • a system for varying the drive torque, in particular operating conditions, of a vehicle heat engine comprising: a plurality of sensors operable to detect parameters of the engine such as the speed of rotation of the engine, the engine phase, the angular position of the air induction manifold butterfly valve, the engine coolant fluid temperature, the inducted air temperature, the battery voltage, and others; an electronic fuel injection device; a memory unit in which are stored, for each operating condition of the engine the mappings for management of the said fuel injection device; a control unit for controlling the said fuel injection device in normal fuel-air mixture delivery conditions; a data processing and comparison unit, operable to process the engine parameters and to manage the said control unit; first comparison means, for comparing, at each engine phase, the detected value of the angular position of the air induction manifold butterfly valve with a first threshold value; second comparison means, for comparing, at each engine phase, the detected value of the speed of rotation of the engine with a second threshold value; characterised in that it includes first means
  • a system for varying the drive torque of a heat engine (not illustrated) of a vehicle (not illustrated) in particular conditions is generally indicated with the reference number 1.
  • the system 1 controls the induction of the air-fuel mixture to the cylinders (not illustrated) of the engine to change from a normal delivery condition of the fuel-air mixture to a mixture cut-off condition and vice versa.
  • the system 1 comprises: an electronic central control unit 2; a plurality of sensors 3 connected to the central control unit 2 and operable to detect parameters of the engine such as the engine's speed of rotation, the engine phase, the angular position of the butterfly (throttle) valve (not illustrated) of the air induction manifold (not illustrated), the engine coolant fluid temperature, the inducted air temperature, the battery voltage of the battery (not illustrated) of the vehicle, and others; an electronic fuel injection device 4 controlled by the central control unit 2; an electronic ignition device 5 controlled by the central control unit 2; a device 6 for controlling a fuel pump (not illustrated), which device is managed by the central control unit 2; a device 7 for management of the rate of flow of aspirated air from the induction manifold; and a device 8 mounted on the dashboard (not illustrated) of the vehicle and operable to indicate the cut-off condition and the conditions of entering and leaving the cut-off condition.
  • parameters of the engine such as the engine's speed of rotation, the engine phase, the angular position of the butterfly (throttle
  • the central control unit 2 comprises; a unit 9 for detecting the magnitudes of the input signals from the sensors 3; a memory block 11 in which is stored, for each operating range of the engine, the management mappings for the devices 4,5,6 and 7; a memory block 12 in which are stored threshold values and the values of the coefficients which will be described hereinafter; a control block 13 for the devices 4,5,6 and 7 in normal fuel-air mixture delivery conditions; a block 14 for control of the devices 4,5,6,7 and 8 during the transfer from a normal fuel-air mixture delivery condition to a mixture cut-off condition and vice versa; a data processing and comparison block 15 for management of the blocks 13 and 14; and a counter 16 connected to the block 15.
  • the block 15 calculates the engines operating region, takes from the calculated range block 11 the management maps for the devices 4,5,6 and 7, and controls the block 13 according to the data of these maps, which then controls the devices 4,5,6 and 7.
  • each engine phase that is to say each 180° of the engine crankshaft, the system passes from block 21 to a block 23 in which the detected value F of the angular position of the induction manifold butterfly valve is compared with a threshold value MF1 memorised in block 12. If the value F is less than or equal to the value MF1, the system passes from block 23 to a block 24, whilst if not it returns from block 23 to block 21.
  • the detected value RPM of the speed of rotation of the engine is compared with a threshold value MRPM1 memorised in block 12. If the value RPM is greater than or equal to the value MRPM1, the system passes from block 24 to a block 25, whilst otherwise it returns from block 24 to block 21.
  • the unit 14 performs a control strategy on devices 4,5,6,7 and 8 for the purpose of changing to the cut-off condition in a predetermined number of engine phases N (which condition does not permit any flow of mixture to the engine) and for the purpose of indicating to the user the change to this cut-off condition by means of the device 8.
  • N which condition does not permit any flow of mixture to the engine
  • the system passes from block 25 to a block 26 in which, in unit 15 the value F is compared with the threshold value MF1. If the value F is less than or equal to the value MF1 the system passes from block 26 to a block 27, whilst otherwise it returns from block 26 to block 21.
  • the value RPM is compared with the threshold value MRPM1. If the value RPM is greater than or equal to the value of MRPM1 the system passes from block 27 to block 22, whilst otherwise it returns from block 27 to block 21.
  • FIG 4 is illustrated a preferred embodiment of the strategy performed by the block 25.
  • a table 28 ( Figure 5) of coefficients Ki memorised in block 12 is utilised.
  • the table 28 comprises N cells to each of which is associated a value of the coefficient Ki.
  • the system passes to a block 34 in which the injection time Tj just calculated is multiplied by the coefficient Ki1 in such a way as to define a new injection time Tji1.
  • the cylinder in the induction phase is controlled to have a fuel mixture injection according to the new injection time Tji1.
  • the system passes to a block 35 in which it is determined if the quantity C is greater than the number N of cells in the table 28. If this is so it passes from block 35 to a block 37 and from this to block 26 of Figure 2, whilst otherwise it passes from block 35 to a block 36 in which the quantity C of the counter 16 is incremented by one unit.
  • the system then returns to the block 32.
  • the device 8 is activated to indicate, for example by means of a warning lamp (not illustrated) the change to mixture cut-off conditions.
  • the block 25 allows the injection time Tji1 to be calculated cylinder by cylinder following a variation of the engine operating conditions.
  • the values of the coefficients Ki are processed in such a way as to vary the engine torque during the change from normal mixture-delivery conditions to cut-off conditions according to a law which does not involve sharp changes and therefore engine shocks.
  • Other parameters can contribute to the processing of the law of variation of the engine torque in different embodiments, such as the variation of the electronic ignition advance (by suitably managing the device 5), the variation in control of the fuel pump (by suitably managing the device 6) and/or the variation of the rate of flow of inducted air (by suitably managing the device 7).
  • the variation of the electronic ignition advance by suitably managing the device 5
  • the variation in control of the fuel pump by suitably managing the device 6
  • the variation of the rate of flow of inducted air by suitably managing the device 7
  • each engine phase that is each 180° of the engine crankshaft, the system passes from block 22 to a block 41 in which, in unit 15 the value Qa detected by a sensor 3, and relating to the rate of flow of air along the induction manifold, is compared with a threshold value MQa memorised in unit 12. If Qa is greater than MQa the system passes from block 41 to a block 42, whilst otherwise it passes from block 41 to a block 43.
  • the system passes from block 43 to a block 44 whilst otherwise it passes from block 43 to block 45.
  • the detected value RPM of the speed of rotation of the engine is compared with a threshold value MRPM2 memorised in unit 12. If the value RPM is greater than or equal to the value MRPM2 the system returns from block 44 to block 22 whilst otherwise it passes to a block 46.
  • the system compares the angular variation of the induction manifold butterfly valve, in a predetermined time ⁇ F/ ⁇ t with the threshold value MFt memorised in unit 12.
  • the system passes from block 45 to a block 47, whilst otherwise it passes from block 45 to block 48.
  • the system compares the variation of the speed of rotation of the engine in a predetermined time ⁇ RPM/ ⁇ t with a threshold value MRPMt memorised in unit 12. If the value ⁇ RPM/ ⁇ t is greater than or equal to the value MRPMt, the system passes from block 46 to a block 51, whilst otherwise it passes from block 46 to block 52.
  • a different quantity representative of the behaviour of the inducted air can be utilised, for example the parameter relating to the inducted air pressure can be utilised.
  • the parameter utilised in unit 41 detects possible rapid and unwanted decreases in the speed of rotation of the engine.
  • the angular position of the air induction manifold butterfly valve and therefore the angular position of the accelerator pedal is evaluated, which position represents the user's wish to leave the cut-off condition.
  • the rate of change of the angular position of the butterfly valve is evaluated and essentially gives the pressure exerted by the user on the accelerator pedal.
  • the system 1 envisages exit from the cut-off condition upon a variation in the rate of flow of inducted air (block 41), a variation in the angular position of the butterfly valve (block 43), and a variation in the engine speed (block 44). Moreover, the system 1 detects the way in which the angular position of the butterfly valve varies (block 45) and the way in which the speed of rotation of the engine (block 46) varies. Essentially the system 1 envisages five possibilities (blocks 42,47,48,51 and 52) to determine the exit from the cut-off condition.
  • block 12 five tables similar to the table 28 are memorised, each of which relates to a condition for exit from the cut-off condition.
  • the associated table is therefore taken from block 12.
  • block 53 similar to block 25 of Figures 2 and 4, and from block 53 it moves on to block 21 which represents the normal fuel mixture delivery conditions.
  • the operating diagram of block 25 illustrated in Figure 4 can be assumed as an operative scheme also for block 53.
  • a command strategy is performed in block 53, by means of the block 14, for control of devices 4,5,6,7 and 8 for the purpose of changing, in a predetermined number of engine phases N, from the mixture cut-off condition to normal mixture-delivery conditions, and for the purpose of indicating to the user, by means of the device 8, this change to normal mixture-delivery conditions.
  • FIG 4 alongside the reference numerals for the components of the block 25, and in parenthesis, are indicated the components of the block 53.
  • a table (corresponding to blocks 52,47,48,51 or 52 via which the block 53 is reached) of coefficients Ko memorised in block 12.
  • the table comprises N cells to each of which is associated a value of the coefficient Ko.
  • the block 53 includes a block 54 in which a quantity D is caused to assume the value 1 in counter 16; quantity D being associated with the sequence of cells of the said table. From block 54 the system passes to a block 55 in which the engine operating condition is evaluated and the injection time Tj is calculated for that operating condition.
  • the block 53 calculates an injection time Tjo1 following the variations in the operating conditions of the engine.
  • the values of the coefficients Ko are processed in such a way as to vary the engine torque, during the change from mixture cut-off conditions to normal delivery conditions, in dependence on a law of variation which does not involve sharp changes and therefore jolts or jerks of the engine.
  • the processing of the law of variation of the engine torque can also be in different forms, and can involve other parameters such as the variation of the electronic ignition advance, the variation of the fuel pump control, and/or variation of the rate of flow of inducted air.
  • the laws of variation of the engine torque both when entering and leaving the cut-off condition and in substance the tables of coefficients Ki and Ko can be the most varied possible, both as to values of coefficients Ki and Ko and as to number of cells. It is therefore possible to adapt the laws of variation of the engine torque upon entering and leaving the fuel cut-off condition both to the type of engine installed on the vehicle and to the performance which it is wished to obtain from the engine, particularly when leaving the fuel cut-off condition.

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)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
EP94115403A 1993-09-30 1994-09-29 Dispositif pour modifier le couple moteur dans des états de fonctionnement particuliers d'un moteur à combustion interne Expired - Lifetime EP0646712B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBO930389 1993-09-30
IT93BO000389A IT1264227B1 (it) 1993-09-30 1993-09-30 Sistema per la variazione della coppia motore in particolari condizio- ni di funzionamento di un motore endotermico di un veicolo.

Publications (2)

Publication Number Publication Date
EP0646712A1 true EP0646712A1 (fr) 1995-04-05
EP0646712B1 EP0646712B1 (fr) 1998-12-16

Family

ID=11339246

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94115403A Expired - Lifetime EP0646712B1 (fr) 1993-09-30 1994-09-29 Dispositif pour modifier le couple moteur dans des états de fonctionnement particuliers d'un moteur à combustion interne

Country Status (5)

Country Link
EP (1) EP0646712B1 (fr)
BR (1) BR9403625A (fr)
DE (1) DE69415257T2 (fr)
ES (1) ES2127864T3 (fr)
IT (1) IT1264227B1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2728305A1 (fr) * 1994-12-20 1996-06-21 Bosch Gmbh Robert Procede et dispositif pour commander un moteur a combustion interne d'un vehicule et reglage d'un regime en inertie forcee par modification de l'angle d'allumage
EP1318285A1 (fr) * 2000-09-14 2003-06-11 Toyota Jidosha Kabushiki Kaisha Regulateur de moteur a cylindree variable et regulateur de vehicule

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2406080A1 (fr) * 1977-10-11 1979-05-11 Nissan Motor Systeme d'injection de carburant pour un moteur a combustion interne de vehicule automobile, equipe d'un generateur de signal de commande de coupure de carburant
FR2414629A1 (fr) * 1978-01-17 1979-08-10 Bosch Gmbh Robert Procede et dispositif pour commander l'alimentation en carburant d'un moteur a combustion interne
US4259723A (en) * 1978-05-04 1981-03-31 Nippondenso Co., Ltd. Method for controlling operations of a combustion engine
GB2138176A (en) * 1983-04-06 1984-10-17 Honda Motor Co Ltd Method for controlling fuel supply to an internal combustion engine after termination of fuel cut
GB2141842A (en) * 1983-06-16 1985-01-03 Honda Motor Co Ltd Intake air quantity control method for internal combustion engines at termination of fuel cut operation
EP0501541A1 (fr) * 1991-02-28 1992-09-02 General Motors Corporation Procédé et dispositif pour commander l'injection de carburant

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2406080A1 (fr) * 1977-10-11 1979-05-11 Nissan Motor Systeme d'injection de carburant pour un moteur a combustion interne de vehicule automobile, equipe d'un generateur de signal de commande de coupure de carburant
FR2414629A1 (fr) * 1978-01-17 1979-08-10 Bosch Gmbh Robert Procede et dispositif pour commander l'alimentation en carburant d'un moteur a combustion interne
US4259723A (en) * 1978-05-04 1981-03-31 Nippondenso Co., Ltd. Method for controlling operations of a combustion engine
GB2138176A (en) * 1983-04-06 1984-10-17 Honda Motor Co Ltd Method for controlling fuel supply to an internal combustion engine after termination of fuel cut
GB2141842A (en) * 1983-06-16 1985-01-03 Honda Motor Co Ltd Intake air quantity control method for internal combustion engines at termination of fuel cut operation
EP0501541A1 (fr) * 1991-02-28 1992-09-02 General Motors Corporation Procédé et dispositif pour commander l'injection de carburant

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2728305A1 (fr) * 1994-12-20 1996-06-21 Bosch Gmbh Robert Procede et dispositif pour commander un moteur a combustion interne d'un vehicule et reglage d'un regime en inertie forcee par modification de l'angle d'allumage
EP1318285A1 (fr) * 2000-09-14 2003-06-11 Toyota Jidosha Kabushiki Kaisha Regulateur de moteur a cylindree variable et regulateur de vehicule
EP1318285A4 (fr) * 2000-09-14 2007-05-23 Toyota Motor Co Ltd Regulateur de moteur a cylindree variable et regulateur de vehicule
EP1939433A3 (fr) * 2000-09-14 2009-04-22 Toyota Jidosha Kabushiki Kaisha Appareil de contrôle pour moteur à cylindre variable, appareil de contrôle pour véhicule

Also Published As

Publication number Publication date
ITBO930389A1 (it) 1995-03-30
ES2127864T3 (es) 1999-05-01
DE69415257T2 (de) 1999-07-01
DE69415257D1 (de) 1999-01-28
ITBO930389A0 (it) 1993-09-30
IT1264227B1 (it) 1996-09-23
EP0646712B1 (fr) 1998-12-16
BR9403625A (pt) 1995-05-30

Similar Documents

Publication Publication Date Title
US5431139A (en) Air induction control system for variable displacement internal combustion engine
US5437253A (en) System and method for controlling the transient torque output of a variable displacement internal combustion engine
CN102128091B (zh) 加速踏板扭矩请求系统和方法
CN101182808B (zh) 基于交通状况的发动机响应调节
US6266597B1 (en) Vehicle and engine control system and method
US6347680B1 (en) Engine output controller
US7121233B2 (en) Control apparatus for an internal combustion engine
JP2001504918A (ja) 車両駆動ユニットの制御方法および装置
CN102072029A (zh) 用于控制发动机扭矩的系统和方法
CN102235251A (zh) 驾驶员扭矩请求系统和方法
US6259986B1 (en) Method for controlling an internal combustion engine
US6910990B2 (en) Engine control to reduce impacts due to transmission gear lash while maintaining high responsiveness to the driver
US6251044B1 (en) Method and arrangement for controlling a drive unit of a motor vehicle
CN101858264B (zh) 与惯量转移相匹配的空气调节扭矩补偿能量
US4846127A (en) Fuel supply control system for an automotive engine
US6808471B1 (en) Methods and apparatus for providing security for electronically-controlled cylinder activation and deactivation
GB2203570A (en) I.c. engine idle control
EP1835154A1 (fr) Contrôle électronique, système pour moteurs à carburateur, à allumage commandé, et à combustion interne
EP0646712B1 (fr) Dispositif pour modifier le couple moteur dans des états de fonctionnement particuliers d'un moteur à combustion interne
JP2871270B2 (ja) 坂路推定方法
EP0646710B1 (fr) Dispositif pour modifier le couple moteur dans des états de fonctionnement particuliers d'un moteur à combustion interne
JPH0575907B2 (fr)
JP2987269B2 (ja) 車両用制御装置
JPH09310637A (ja) 内燃機関のスロットル弁制御装置
JP2004506834A (ja) 内燃機関の駆動方法、コンピュータプログラム、開制御および／または閉ループ制御装置

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): DE ES FR GB SE

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: MAGNETI MARELLI S.P.A.

17P Request for examination filed

Effective date: 19950926

17Q First examination report despatched

Effective date: 19970206

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB SE

REF Corresponds to:

Ref document number: 69415257

Country of ref document: DE

Date of ref document: 19990128

ET Fr: translation filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2127864

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

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

Ref country code: FR

Payment date: 20030730

Year of fee payment: 10

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

Ref country code: SE

Payment date: 20030808

Year of fee payment: 10

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

Ref country code: GB

Payment date: 20030924

Year of fee payment: 10

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

Ref country code: ES

Payment date: 20030930

Year of fee payment: 10

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

Ref country code: DE

Payment date: 20031121

Year of fee payment: 10

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: 20040929

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

Ref country code: SE

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

Effective date: 20040930

Ref country code: ES

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

Effective date: 20040930

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: 20050401

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

Effective date: 20040929

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

Ref country code: FR

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

Effective date: 20050531

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20040930