EP0644324B1 - Fuel dosing method for diesel engines - Google Patents
Fuel dosing method for diesel engines Download PDFInfo
- Publication number
- EP0644324B1 EP0644324B1 EP94109088A EP94109088A EP0644324B1 EP 0644324 B1 EP0644324 B1 EP 0644324B1 EP 94109088 A EP94109088 A EP 94109088A EP 94109088 A EP94109088 A EP 94109088A EP 0644324 B1 EP0644324 B1 EP 0644324B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- injection
- injection quantity
- values
- established
- internal combustion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
-
- 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
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
-
- 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
- F02D2250/32—Air-fuel ratio control in a diesel engine
Definitions
- the invention relates according to the preamble of claim 1 to a method known from EP-B 0 377 596 for fuel metering of a diesel internal combustion engine.
- the fuel metering in the part-load range of the internal combustion engine is controlled, whereas the fuel metering at full load is carried out in a regulated manner via additional signals from a lambda probe arranged in the exhaust line of the internal combustion engine.
- the injection pump part is given a load point-dependent injection quantity from a characteristic map as a function of an accelerator pedal position and other operating parameters.
- a characteristic map as a function of an accelerator pedal position and other operating parameters.
- it is also customary in the injection pump from the context of the quantity signal box position or delivery time and machine or pump speed to determine the respective injection quantity.
- the invention is based on the object of avoiding the injection quantities which differ in the known method of fuel metering for the reasons mentioned above by operating-dependent corrective measures on the injection pump.
- the injection correction according to the invention is used in accordance with claim 4 for lower to medium partial load and exhaust gas recirculation regulated by air mass, and in accordance with claim 5 at full load for limiting the injection quantity.
- an injection quantity value is specified from a map to the signal box of a speed-controlled quantity signal box. Furthermore, in the case of such injection pumps, injection quantities are determined from the correlation of the quantity signal box position and the machine or pump speed, the values of which are relatively inaccurate due to different fuel quality and exemplary tolerance-related scattering caused by the injection equipment and changes related to runtime.
- the voltage signals of a lean lambda probe acted upon by the exhaust gas of the diesel internal combustion engine are fed to an arithmetic unit of the electronic injection pump, the actual or effective injection quantity being derived from the respective actual lambda value and an associated actual intake air mass value is calculated or determined.
- This determined for each load point, effective injection quantity value is also determined from the quantity signal box position or delivery period and machine or. Pump speed-determined relatively inaccurate injection quantity value in relation to the formation of a correction signal. With the aid of this correction signal, the injection quantity resulting from the deviation caused by the injection equipment and / or the fuel is corrected.
- an injection quantity-relevant operating parameter e.g. Machine or pump speed - affects the signal formation disadvantageously or unfavorably.
- the dynamic rates of change are therefore compared over a predetermined period of time with a predetermined, maximum rate of change. If this maximum rate of change is exceeded within the time window, the signal generation is stopped and restarted. This means that correction signals are not generated in the event of a relatively rapid dynamic load change.
- the values stored in a target map for injection quantities of an electronic injection pump can be overwritten by the corrected injection quantity values.
- the method according to the invention serves to limit the injection quantity and thus to avoid black smoke.
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)
- Exhaust-Gas Circulating Devices (AREA)
Description
Die Erfindung bezieht sich nach dem Oberbegriff des Patentanspruches 1 auf ein aus der EP-B 0 377 596 bekanntes Verfahren zur Kraftstoffzumessung einer Diesel-Brennkraftmaschine.The invention relates according to the preamble of claim 1 to a method known from EP-B 0 377 596 for fuel metering of a diesel internal combustion engine.
Bei diesem bekannten Verfahren erfolgt die Kraftstoffzumessung im Teillastbereich der Brennkraftmaschine gesteuert, wogegen die Kraftstoffzumessung an der Vollast über zusätzliche Signale einer im Abgasstrang der Brennkraftmaschine angeordneten Lambda-Sonde geregelt erfolgt.In this known method, the fuel metering in the part-load range of the internal combustion engine is controlled, whereas the fuel metering at full load is carried out in a regulated manner via additional signals from a lambda probe arranged in the exhaust line of the internal combustion engine.
Weiter ist es bekannt, Lambda-Sonden-Signale zur Beeinflussung einer Abgasrückführeinrichtung bei Diesel-Brennkraftmaschinen zu verwenden.It is also known to use lambda probe signals to influence an exhaust gas recirculation device in diesel internal combustion engines.
Bei elektronischen Diesel-Einspritzpumpen wird dem Einspritzpumpenteil aus einem Kennfeld in Abhängigkeit einer Fahrpedalstellung und weiteren Betriebskenngrößen eine lastpunktabhängige Einspritzmenge vorgegeben. Zur Regelung dieser Einspritzmenge ist es ferner üblich, in der Einspritzpumpe aus dem Zusammenhang von Mengenstellwerksposition oder Förderdauer und Maschinen- bzw. Pumpen-Drehzahl die jeweilige Einspritzmenge zu ermitteln.In the case of electronic diesel injection pumps, the injection pump part is given a load point-dependent injection quantity from a characteristic map as a function of an accelerator pedal position and other operating parameters. To regulate this injection quantity, it is also customary in the injection pump from the context of the quantity signal box position or delivery time and machine or pump speed to determine the respective injection quantity.
Von nicht erfaßtem Einfluß auf die eingespritzten Kraftstoffmengen sind die unterschiedlichen Kraftstoffqualitäten, die exemplarischen toleranzbedingten Streuungen in der Einspritzpumpe und die laufzeitabhängigen Veränderungen der gesamten Einspritzausrüstung.The different fuel qualities, the exemplary tolerance-related variations in the injection pump and the runtime-dependent changes in the entire injection equipment have no influence on the injected fuel quantities.
Der Erfindung liegt die Aufgabe zugrunde, die bei dem bekannten Verfahren der Kraftstoffzumessung aus den vorgenannten Gründen abweichenden Einspritzmengen durch betriebsabhängige Korrekturmaßnahmen an der Einspritzpumpe zu vermeiden.The invention is based on the object of avoiding the injection quantities which differ in the known method of fuel metering for the reasons mentioned above by operating-dependent corrective measures on the injection pump.
Diese Aufgabe wird durch die im Kennzeichen des Patentanspruches 1 angegebenen Merkmale vorteilhaft einfach gelöst. Durch die erfindungsgemäße Ermittlung der tatsächlichen Einspritzmenge aus dem Lambda-Istwert und dem Ansaugluftmassen-Istwert in einem Lastpunkt und der weiteren erfindungsgemäßen Korrelation dieses Einspritzmengen-Wertes mit dem in der Einspritzpumpe vor allem über eine drehzahlabhängige Mengenstellwerksposition bestimmten Einspritzmengen-Wert zur Bildung eines Korrektursignals kann in vorteilhafter Weise mit dessen Hilfe eine einspritzausrüstungs- und/oder kraftstoffseitig bedingte abweichende Einspritzmenge korrigiert werden.This object is advantageously achieved simply by the features specified in the characterizing part of patent claim 1. The inventive determination of the actual injection quantity from the actual lambda value and the actual intake air mass value at a load point and the further correlation of this injection quantity value with the injection quantity value determined in the injection pump, above all via a speed-dependent quantity signal box position, to form a correction signal an injection equipment and / or fuel-related different injection quantity are advantageously corrected with the aid of this.
Um den Vorteil der erfindungsgemäßen Einspritz-Korrektur voll auszunützen, sind im Anspruch 2 Merkmale zur Erzielung eines quasi-stationären Lastpunktes angegeben. Mit innerhalb eines vorbestimmten Zeitfensters abgeschlossenen Maßnahmen zur Einspritz-Korrektur ist eine Verzerrung der korrigierten Einspritzmengen-Werte durch dynamisches Maschinenverhalten unterbunden.In order to take full advantage of the injection correction according to the invention, features are specified in claim 2 for achieving a quasi-stationary load point. With measures for injection correction completed within a predetermined time window, distortion of the corrected injection quantity values by dynamic machine behavior is prevented.
Im Anspruch 3 ist eine Adaption der korrigierten Einspritzmengen-Werte in einem Soll-Kennlinienfeld für Einspritzmengen beschrieben. Damit werden in vorteilhafter Weise größere Abweichungen von vornherein vermieden.In claim 3, an adaptation of the corrected injection quantity values is described in a target characteristic field for injection quantities. This advantageously avoids major deviations from the outset.
Zur Verbesserung des Emissionverhaltens der Diesel-Brennkraftmaschine findet die erfindungsgemäße Einspritz-Korrektur gemäß Anspruch 4 bei unterer bis mittlerer Teillast und luftmassengeregelter Abgasrückführung Anwendung sowie gemäß Anspruch 5 an der Vollast zur Einspritzmengen-Begrenzung.To improve the emission behavior of the diesel internal combustion engine, the injection correction according to the invention is used in accordance with claim 4 for lower to medium partial load and exhaust gas recirculation regulated by air mass, and in accordance with claim 5 at full load for limiting the injection quantity.
Das Verfahren ist im folgenden beschrieben.The procedure is described below.
Bei einer Diesel-Brennkraftmaschine mit elektronischer Einspritzpumpe wird in Abhängigkeit vom Betriebszustand (Start, Leerlauf, Last) und von Betriebskenngrößen (Motordrehzahl, Fahrpedalstellung, Temperaturen, u.a.) aus einem Kennfeld ein Einspritzmengen-Wert dem Stellwerk eines drehzahlgesteuerten Mengenstellwerks vorgegeben. Weiter werden bei derartigen Einspritzpumpen aus der Korrelation von Mengenstellwerksposition und Maschinen- bzw. Pumpendrehzahl Einspritzmengen bestimmt, deren Werte aufgrund unterschiedlicher Kraftstoffqualität sowie einspritzausrüstungsseitig bedingter exemplarischer toleranzbedingter Streuungen und laufzeitabhängiger derungen relativ ungenau sind.In a diesel internal combustion engine with an electronic injection pump, depending on the operating state (start, idling, load) and operating parameters (engine speed, accelerator pedal position, temperatures, etc.), an injection quantity value is specified from a map to the signal box of a speed-controlled quantity signal box. Furthermore, in the case of such injection pumps, injection quantities are determined from the correlation of the quantity signal box position and the machine or pump speed, the values of which are relatively inaccurate due to different fuel quality and exemplary tolerance-related scattering caused by the injection equipment and changes related to runtime.
Zur Erzielung von an Lastpunkten besser angepaßten Einspritzmengen werden die Spannungssignale einer vom Abgas der Diesel-Brennkraftmaschine beaufschlagten Mager-Lambda-Sonde einem Rechenwerk der elektronischen Einspritzpumpe zugeführt, wobei aus dem jeweiligen Lambda-Istwert und einem zugehörigen Ansaugluftmassen-Istwert die tatsächliche bzw. effektive Einspritzmenge errechnet bzw. ermittelt wird. Dieser je Lastpunkt jeweils ermittelte, effektive Einspritzmengen-Wert wird zudem aus Mengenstellwerksposition bzw. Förderdauer und maschinen-bzw. pumpen-drehzahlbestimmten relativ ungenauen Einspritzmengen-Wert in Bezug gesetzt zur Bildung eines Korrektursignals. Mit Hilfe dieses Korrektursignals wird die aus der einspritzausrüstungs- und/oder kraftstoffseitig bedingten Abweichung resultierende Einspritzmenge korrigiert.In order to achieve injection quantities that are better adapted to load points, the voltage signals of a lean lambda probe acted upon by the exhaust gas of the diesel internal combustion engine are fed to an arithmetic unit of the electronic injection pump, the actual or effective injection quantity being derived from the respective actual lambda value and an associated actual intake air mass value is calculated or determined. This determined for each load point, effective injection quantity value is also determined from the quantity signal box position or delivery period and machine or. Pump speed-determined relatively inaccurate injection quantity value in relation to the formation of a correction signal. With the aid of this correction signal, the injection quantity resulting from the deviation caused by the injection equipment and / or the fuel is corrected.
Während der Ermittlung der für einen Lastpunkt tatsächlichen Einspritzmenge und der pumpenseitig bestimmten Einspritzmenge sowie deren Korrelation zur Bildung eines Korrektursignals können dynamische Änderungsraten einer einspritzmengenrelevanten Betriebskenngröße - z.B. Maschinen- bzw. Pumpen-Drehzahl - die Signalbildung nachteilig bzw. ungünstig beeinflussen. Zur Erzielung eines quasi-stationären Lastpunktes werden daher die dynamischen Änderungsraten über eine vorbestimmte Zeitspanne mit einer vorgegebenen, maximalen Änderungsrate verglichen. Bei Überschreiten dieser maximalen Änderungsrate innerhalb des Zeitfensters wird die Signalbildung abgebrochen und neu gestartet. Damit unterbleibt bei einem relativ raschen dynamischen Lastwechsel die Bildung von Korrektursignalen.During the determination of the actual injection quantity for a load point and the injection quantity determined on the pump side and their correlation to the formation of a correction signal, dynamic rates of change of an injection quantity-relevant operating parameter - e.g. Machine or pump speed - affect the signal formation disadvantageously or unfavorably. To achieve a quasi-stationary load point, the dynamic rates of change are therefore compared over a predetermined period of time with a predetermined, maximum rate of change. If this maximum rate of change is exceeded within the time window, the signal generation is stopped and restarted. This means that correction signals are not generated in the event of a relatively rapid dynamic load change.
Um größere Abweichungen der Einspritzmengen durch fest abgelegte Einspritzmengen-Kennfeld-Werte von vornherein zu vermeiden, können die in einem Soll-Kennfeld für Einspritzmengen einer elektronischen Einspritzpumpe abgelegten Werte durch die korrigierten Einspritzmengen-Werte überschrieben werden.In order to avoid major deviations in the injection quantities from the stored injection quantity map values from the outset, the values stored in a target map for injection quantities of an electronic injection pump can be overwritten by the corrected injection quantity values.
Vorteilhaft ist die Verwendung der erfindungsgemäß korrigierten Einspritzmengen bei unterer bis mittlerer Teillast und luftmassengeregelter Abgasrückführung im Hinblick auf verbessertes Emissionsverhalten der Diesel-Brennkraftmaschine. An der Vollast dient das erfindungsgemäße Verfahren zur Einspritzmengen-Begrenzung und damit zur Vermeidung von Schwarzrauch.It is advantageous to use the injection quantities corrected according to the invention at lower to medium partial loads and exhaust gas recirculation regulated by air mass with regard to improved emission behavior of the diesel internal combustion engine. At full load, the method according to the invention serves to limit the injection quantity and thus to avoid black smoke.
Claims (5)
- A method for metering fuel to a diesel internal combustion engine- wherein a value for injection quantity established in a characteristics map is specified to an injection pump of the internal combustion engine as a function of operating state and operating characteristics, with- load-dependent injection quantities influenced through a lambda probe impinged upon by the exhaust gas of the diesel internal combustion engine,characterised in that- at one load level the effective injection quantity is established from the available lambda actual value and an intake air mass actual value, and- this established injection quantity value is compared to the injection quantity which is especially determined through a speed-dependent quantity regulating unit setting to form a correction signal, by means of which- a deviating injection quantity attributable to the injection system and/or fuel is corrected.
- A method according to claim 1, characterised in that dynamic rates of change in an operating characteristic such as engine speed occurring during establishment of the different injection quantity values of a load level and the subsequent formation of correction values are compared over a predetermined time period with a pre-established maximum rate of change, and the formation of the correction values is interrupted if the maximum rate of change is exceeded.
- A method according to claim 1 and claim 2, characterised in that values deposited in a characteristics map for desired injection quantities can be overwritten with corrected injection quantity values.
- A method according to claims 1 to 3, characterised in that corrected injection quantities are used at low to middle partial loads and air masscontrolled exhaust gas recirculation.
- A method according to claims 1 to 4, characterised by the use at full load to limit injection quantities.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4332103A DE4332103A1 (en) | 1993-09-22 | 1993-09-22 | Method for metering fuel in a diesel internal combustion engine |
| DE4332103 | 1993-09-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0644324A1 EP0644324A1 (en) | 1995-03-22 |
| EP0644324B1 true EP0644324B1 (en) | 1997-09-10 |
Family
ID=6498234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94109088A Expired - Lifetime EP0644324B1 (en) | 1993-09-22 | 1994-06-14 | Fuel dosing method for diesel engines |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0644324B1 (en) |
| DE (2) | DE4332103A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3878258B2 (en) * | 1996-11-01 | 2007-02-07 | 株式会社日立製作所 | Engine control device |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3011595A1 (en) * | 1980-03-26 | 1981-10-01 | Robert Bosch Gmbh, 7000 Stuttgart | CORRECTION DEVICE FOR A FUEL MEASURING SYSTEM IN AN INTERNAL COMBUSTION ENGINE |
| DE3248745A1 (en) * | 1982-12-31 | 1984-07-05 | Robert Bosch Gmbh, 7000 Stuttgart | Control system for an internal combustion engine |
| DE3400513A1 (en) * | 1984-01-10 | 1985-07-18 | Robert Bosch Gmbh, 7000 Stuttgart | FULL LOAD LIMIT OF AN INTERNAL COMBUSTION ENGINE |
| DE3510216A1 (en) * | 1985-03-21 | 1986-09-25 | Robert Bosch Gmbh, 7000 Stuttgart | METHOD FOR INFLUENCING THE FUEL METERING IN AN INTERNAL COMBUSTION ENGINE |
| DE3729771A1 (en) * | 1987-09-05 | 1989-03-16 | Bosch Gmbh Robert | METHOD AND DEVICE FOR MEASURING FUEL IN A DIESEL INTERNAL COMBUSTION ENGINE |
| SU1576705A2 (en) * | 1988-05-17 | 1990-07-07 | Челябинский Политехнический Институт Им.Ленинского Комсомола | Rotational speed governor of internal combustion engine |
| DE3925877C2 (en) * | 1989-08-04 | 1998-10-08 | Bosch Gmbh Robert | Method and device for controlling the fuel metering in a diesel internal combustion engine |
| DE3929746A1 (en) * | 1989-09-07 | 1991-03-14 | Bosch Gmbh Robert | METHOD AND DEVICE FOR CONTROLLING AND REGULATING A SELF-IGNITIONING INTERNAL COMBUSTION ENGINE |
| DE4031367A1 (en) * | 1990-10-04 | 1992-04-09 | Bosch Gmbh Robert | CONTROL SYSTEM FOR A SELF-IGNITION COMBUSTION ENGINE |
| JPH04311643A (en) * | 1991-04-10 | 1992-11-04 | Hitachi Ltd | Engine cylinder inflow air quantity computing method and fuel injection control method |
-
1993
- 1993-09-22 DE DE4332103A patent/DE4332103A1/en not_active Withdrawn
-
1994
- 1994-06-14 EP EP94109088A patent/EP0644324B1/en not_active Expired - Lifetime
- 1994-06-14 DE DE59404016T patent/DE59404016D1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP0644324A1 (en) | 1995-03-22 |
| DE4332103A1 (en) | 1995-03-23 |
| DE59404016D1 (en) | 1997-10-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE19606652B4 (en) | Method of setting the air-fuel ratio for an internal combustion engine with a downstream catalytic converter | |
| DE2633617C2 (en) | Method and device for determining setting variables in an internal combustion engine, in particular the duration of fuel injection pulses, the ignition angle, the exhaust gas recirculation rate | |
| DE4117440C2 (en) | Adaptive fuel / air mixture setting to take fuel properties into account | |
| DE3590028C2 (en) | ||
| DE102008001244B4 (en) | Oxygen sensor output correction device for an internal combustion engine | |
| DE2829958C2 (en) | ||
| EP0152604B1 (en) | Control and regulation method for the operating parameters of an internal-combustion engine | |
| DE3717368C2 (en) | Device for damping jerky vibrations in motor vehicles | |
| DE102008001241B4 (en) | Oxygen sensor delivery corrector for an internal combustion engine | |
| DE60306697T2 (en) | Method and apparatus for controlling the injection of an internal combustion engine, in particular a diesel engine with a common rail injection system | |
| DE3929746A1 (en) | METHOD AND DEVICE FOR CONTROLLING AND REGULATING A SELF-IGNITIONING INTERNAL COMBUSTION ENGINE | |
| DE3408223A1 (en) | CONTROL AND REGULATING METHOD FOR THE OPERATING CHARACTERISTICS OF AN INTERNAL COMBUSTION ENGINE | |
| DE4436121C2 (en) | Regulation of the fuel supply to an internal combustion engine | |
| DE3145246A1 (en) | Method and device for controlling the idling speed of an internal combustion engine | |
| DE69007685T2 (en) | Control system of an engine. | |
| DE60300343T2 (en) | Method for calculating the engine torque | |
| DE102006020675A1 (en) | Method for lambda and torque control of an internal combustion engine and program algorithm | |
| DE10343759B4 (en) | Method and device for determining the deviation of the actual injection quantity from a calculated reference injection quantity of a fuel injection system | |
| DE4128718A1 (en) | METHOD AND DEVICE FOR FUEL QUANTITY CONTROL FOR A COMBUSTION ENGINE WITH CATALYST | |
| DE102010064184B4 (en) | Method for operating an injection system for an internal combustion engine | |
| DE4312587A1 (en) | Method and device for controlling a fuel injection system | |
| EP0210177A1 (en) | Method for modifying the operation parameters of internal combustion machines. | |
| DE19545924B4 (en) | Methods and apparatus for controlling air / fuel ratio learning of an internal combustion engine | |
| DE3933723A1 (en) | FUEL-AIR RATIO CONTROL DEVICE FOR AN INTERNAL COMBUSTION ENGINE | |
| DE3143398A1 (en) | Method for controlling the air-fuel ratio |
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 FR GB IT |
|
| 17P | Request for examination filed |
Effective date: 19950908 |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| 17Q | First examination report despatched |
Effective date: 19961203 |
|
| 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 FR GB IT |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19970912 |
|
| ET | Fr: translation filed | ||
| REF | Corresponds to: |
Ref document number: 59404016 Country of ref document: DE Date of ref document: 19971016 |
|
| ITF | It: translation for a ep patent filed |
Owner name: STUDIO JAUMANN P. & C. S.N.C. |
|
| 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: DE Payment date: 20110727 Year of fee payment: 18 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20120627 Year of fee payment: 19 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20120626 Year of fee payment: 19 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20120719 Year of fee payment: 19 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 59404016 Country of ref document: DE Effective date: 20130101 |
|
| 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: 20130101 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20130614 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20140228 |
|
| 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: 20130614 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130614 Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130701 |