EP3292289B1 - Method for operating a water injection device for an internal combustion engine - Google Patents
Method for operating a water injection device for an internal combustion engine Download PDFInfo
- Publication number
- EP3292289B1 EP3292289B1 EP16716879.8A EP16716879A EP3292289B1 EP 3292289 B1 EP3292289 B1 EP 3292289B1 EP 16716879 A EP16716879 A EP 16716879A EP 3292289 B1 EP3292289 B1 EP 3292289B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- water
- injectors
- internal combustion
- combustion engine
- injector
- 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.)
- Active
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 145
- 238000002485 combustion reaction Methods 0.000 title claims description 35
- 238000002347 injection Methods 0.000 title claims description 31
- 239000007924 injection Substances 0.000 title claims description 31
- 238000000034 method Methods 0.000 title claims description 9
- 239000000446 fuel Substances 0.000 description 5
- 230000008014 freezing Effects 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000002528 anti-freeze Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000011045 prefiltration Methods 0.000 description 1
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
- F02D41/042—Introducing corrections for particular operating conditions for stopping the engine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/022—Adding fuel and water emulsion, water or steam
- F02M25/0221—Details of the water supply system, e.g. pumps or arrangement of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/022—Adding fuel and water emulsion, water or steam
- F02M25/0227—Control aspects; Arrangement of sensors; Diagnostics; Actuators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/022—Adding fuel and water emulsion, water or steam
- F02M25/025—Adding water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/022—Adding fuel and water emulsion, water or steam
- F02M25/025—Adding water
- F02M25/028—Adding water into the charge intakes
-
- 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
- F02B47/00—Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines
- F02B47/02—Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines the substances being water or steam
-
- 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
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
Definitions
- the present invention relates to a method for operating a water injection device for an internal combustion engine.
- a problem with known water injection systems is possible icing of water-carrying components of the water injection system.
- antifreeze components are added to the water in the water injection system.
- the inventive method for operating a water injection device for an internal combustion engine with the features of claim 1 has the advantage that damage to the components of the water injection device by icing can be avoided without the components being designed to withstand ice pressure. No additional fuel or additional components are required for this. Furthermore, a simple and inexpensive design of the water injection device is possible.
- a method for operating a water injection device for an internal combustion engine which has a water tank for storing water, a conveying element for conveying the water, which is connected to the water tank, at least two water injectors for injecting water, which are each connected to the conveying element are connected, and comprises a control unit which is set up to open the water injectors one after the other, the conveying element being set up to suck in the water in the water injectors one after the other and to supply it to the water tank when the water injectors are open, in order to prevent the water injectors from icing up. Since the water injectors are opened one by one after negative pressure is built up in a delivery line, it can be ensured that
- Residual water can be safely sucked out of each water injector. Furthermore, by opening the water injectors, air enters the water injectors, which leads to rapid delivery of the water from the water injectors to the water tank.
- the invention changes that
- the pump is set up to change the direction of rotation.
- the water injectors after switching off the internal combustion engine, in particular after each shutdown Internal combustion engine, open.
- the second water injector is opened when the first water injector is closed.
- the second water injector is opened after a predetermined time has elapsed after the first water injector was closed.
- the predetermined time is less than one second.
- FIG 1 the internal combustion engine 2, which has a plurality of cylinders, and part of the water injection device 1 according to the invention is shown schematically.
- the internal combustion engine 2 comprises a combustion chamber 20 per cylinder, in which a piston 21 can be moved back and forth. Furthermore, the internal combustion engine 2 preferably has an intake port 22 per cylinder, via which air is supplied to the combustion chamber 20 . Exhaust gas is discharged via an exhaust gas duct 23 .
- an inlet valve 25 is arranged on the inlet duct 22 and an outlet valve 26 is arranged on the exhaust gas duct 23 .
- Reference numeral 24 also designates a fuel injection valve.
- a water injector 6 is also arranged on the intake port 22 and injects water into the intake port 22 of the internal combustion engine 2 via a control unit 10 .
- one water injector 6 is provided per cylinder.
- two water injectors can be arranged per cylinder for better treatment or to increase the maximum quantity of water that can be injected per combustion cycle.
- the water injection device 1 comprises a conveying element 3 designed as a pump and an electric drive 4 for driving the pump. Furthermore, a water tank 5 is provided, which is connected to the conveying element 3 by a suction line 7 .
- a delivery line 8 connects the delivery element 3 to a distributor 9 or a rail to which a large number of water injectors 6 are connected.
- a first water injector 6a, a second water injector 6b, a third water injector 6c and a fourth water injector 6d are provided in this exemplary embodiment.
- the number of water injectors may vary depending on engine design and combustion requirements.
- FIG 2 the water injection device 1 according to the invention is shown in normal operation.
- Normal operation is understood to be operation in which water is conveyed in a first conveying direction X1 from the water tank 5 to the water injectors 6a, 6b, 6c and 6d, so that the water is injected into the inlet channels 22 of the internal combustion engine 2.
- a condensate of an evaporator (not shown) of an air conditioning system is preferably used for this, for which purpose the water injection device 1 according to the invention has an inlet line 11 .
- deionized water can be pumped into the water tank 5 via a refill line 12 .
- a sieve can optionally be provided in the refill line 12 .
- a pre-filter 16 is arranged in the first line 7 and a fine filter 17 in the second line 8, which can optionally be heated.
- a pressure regulator 15 in the form of an orifice plate 15 a and a check valve 15 b is arranged in a return line 13 which connects the delivery line 8 to the water tank 5 .
- the check valve 15b can be used as the pressure regulator 15.
- a pressure sensor 14 is also provided in the delivery line 8 for pressure control.
- a temperature or level sensor 18 is provided.
- the water injection device 1 is deactivated at temperatures below the freezing point of the water when driving or switching off the internal combustion engine, the water standing in the water injection device 1 can lead to icing of water-carrying components and in particular the water injectors 6.
- the water which is in the water injectors 6 is sucked out of the water injectors 6, in particular when the internal combustion engine 2 is switched off.
- the drive 4 of the conveying element 3 is controlled via the control unit 10 to change the operating direction of the conveying element 3 so that the water is supplied in a second conveying direction X2 through the conveying line 8 and the suction line 7 to the water tank 5 .
- the water injectors 6a, 6b, 6c and 6d are opened one after the other via the control unit 10. This will be in the Figures 3 to 6 shown.
- the first water injector 6a is opened for a first activation time and then closed again.
- the water from the first water injector 6a is thus pumped back into the water tank 5 ( figure 3 ).
- the first water injector 6a can be protected against icing.
- the second water injector 6b is opened for a second control time and closed again, so that the second water injector 6b is emptied ( figure 4 ).
- each water injector 6 is preferably closed before the next water injector 6 is emptied.
- the maximum suction force of the conveying element 3 can be used to empty each water injector 6, which ensures that no water remains in the water injectors 6.
- the first control time for the first water injector 6a, the second control time for the second water injector 6b and a third control time for the third water injector 6c and a fourth control time for the fourth water injector 6d are the same.
- the water injectors 6 can also be opened for different times.
- the suction of the water of the first water injector 6a, the second water injector 6b, the third water injector 6c and the fourth Water injector 6d are in the Figures 3 to 6 denoted by the reference symbols W a , W b , W c and W d .
- the water injector 1 protects the water injectors 6 from freezing, in particular when the internal combustion engine 2 is switched off. A fail-safe mode of operation of the water injection device 1 and thus of the internal combustion engine 2 is thereby ensured.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Fuel-Injection Apparatus (AREA)
Description
Die vorliegende Erfindung betrifft ein Verfahren zum Betreiben einer Wassereinspritzvorrichtung für eine Brennkraftmaschine.The present invention relates to a method for operating a water injection device for an internal combustion engine.
Aufgrund steigender Anforderungen an reduzierte Kohlenstoffdioxidemissionen werden Brennkraftmaschinen zunehmend hinsichtlich des Kraftstoffverbrauchs optimiert. Allerdings können bekannte Brennkraftmaschinen in Betriebspunkten mit hoher Last nicht optimal im Hinblick auf den Verbrauch betrieben werden, da der Betrieb durch Klopfneigung und hohe Abgastemperaturen begrenzt ist. Eine mögliche Maßnahme zur Reduzierung der Klopfneigung und zur Senkung der Abgastemperaturen ist die Einspritzung von Wasser. Hierbei sind üblicherweise separate Wassereinspritzsysteme vorhanden, um die Wassereinspritzung zu ermöglichen. So ist z.B. aus der
Ein Problem bei bekannten Wassereinspritzsystemen ist eine mögliche Vereisung von wasserführenden Komponenten des Wassereinspritzsystems. Um das System auch bei Temperaturen unterhalb des Gefrierpunktes des im Wassereinspritzsystem verwendeten Wassers zu betreiben, werden Frostschutzkomponenten dem Wasser des Wassereinspritzsystems zugesetzt.A problem with known water injection systems is possible icing of water-carrying components of the water injection system. In order to operate the system at temperatures below the freezing point of the water used in the water injection system, antifreeze components are added to the water in the water injection system.
Diese Komponenten beeinflussen jedoch das Brennverhalten der Brennkraftmaschine und erfordern zusätzliche Betriebsstoffe. Es ist aus der
Das erfindungsgemäße Verfahren zum Betreiben einer Wassereinspritzvorrichtung für eine Brennkraftmaschine mit den Merkmalen des Anspruchs 1 weist demgegenüber den Vorteil auf, dass eine Beschädigung der Bauteile der Wassereinspritzvorrichtung durch Vereisung vermieden werden kann, ohne dass die Bauteile eisdruckfest ausgelegt sind. Dazu sind kein weitere Betriebsstoff oder zusätzliche Komponenten erforderlich. Ferner ist ein einfaches und günstiges Design der Wassereinspritzvorrichtung möglich. Dies wird erfindungsgemäß durch ein Verfahren zum Betreiben einer Wassereinspritzvorrichtung für eine Brennkraftmaschine erreicht, welche einen Wassertank zur Speicherung von Wasser, ein Förderelement zur Förderung des Wassers, welches mit dem Wassertank verbunden ist, mindestens zwei Wasserinjektoren zum Einspritzen von Wasser, welche jeweils mit dem Förderelement verbunden sind, und eine Steuereinheit umfasst, welche eingerichtet ist, die Wasserinjektoren nacheinander zu öffnen, wobei das Förderelement eingerichtet ist, in den Wasserinjektoren befindliches Wasser nacheinander anzusaugen und zum Wassertank zuzuführen, wenn die Wasserinjektoren geöffnet sind, um eine Vereisung der Wasserinjektoren zu vermeiden. Da die Wasserinjektoren einer nach dem anderen geöffnet werden, nachdem Unterdruck in einer Förderleitung aufgebaut ist, kann sichergestellt werden, dassThe inventive method for operating a water injection device for an internal combustion engine with the features of
Wasserreste aus jedem Wasserinjektor sicher abgesaugt werden. Ferner tritt durch das Öffnen der Wasserinjektoren Luft in die Wasserinjektoren ein, was zu einer schnellen Förderung des Wassers aus den Wasserinjektoren zum Wassertank führt.Residual water can be safely sucked out of each water injector. Furthermore, by opening the water injectors, air enters the water injectors, which leads to rapid delivery of the water from the water injectors to the water tank.
Die Unteransprüche zeigen bevorzugte Weiterbildungen der Erfindung.The dependent claims show preferred developments of the invention.
Zum Fördern des Wassers zum Wassertank ändert erfindungsgemäß dasFor conveying the water to the water tank, the invention changes that
Förderelement die Betriebsrichtung. Insbesondere ist die Pumpe eingerichtet, die Drehrichtung zu ändern. Vorzugsweise werden die Wasserinjektoren nach dem Abstellen der Brennkraftmaschine, insbesondere nach jedem Abstellen der Brennkraftmaschine, geöffnet.conveying element the direction of operation. In particular, the pump is set up to change the direction of rotation. Preferably, the water injectors after switching off the internal combustion engine, in particular after each shutdown Internal combustion engine, open.
Weiter bevorzugt wird der zweite Wasserinjektor geöffnet, wenn der erste Wasserinjektor geschlossen ist.More preferably, the second water injector is opened when the first water injector is closed.
Insbesondere wird der zweite Wasserinjektor nach Ablauf einer vorbestimmten Zeit nach dem Schließen des ersten Wasserinjektors geöffnet. Vorzugsweise ist die vorbestimmte Zeit kleiner als eine Sekunde.In particular, the second water injector is opened after a predetermined time has elapsed after the first water injector was closed. Preferably, the predetermined time is less than one second.
Nachfolgend wird ein bevorzugtes Ausführungsbeispiel der Erfindung unter Bezugnahme auf die begleitende Zeichnung im Detail beschrieben. In der Zeichnung ist:
Figur 1- eine stark vereinfachte schematische Ansicht einer Brennkraftmaschine mit einer Wassereinspritzvorrichtung gemäß einem bevorzugten Ausführungsbeispiel der vorliegenden Erfindung,
Figur 2- eine vereinfachte schematische Ansicht der Wassereinspritzvorrichtung gemäß dem bevorzugten Ausführungsbeispiel im normalen Betrieb, und
Figuren 3 bis 6- vereinfachte, schematische Ansichten der erfindungsgemäßen Wassereinspritzvorrichtung, anhand deren das erfindungsgemäße Verfahren erläutert wird.
- figure 1
- a highly simplified schematic view of an internal combustion engine with a water injection device according to a preferred embodiment of the present invention,
- figure 2
- a simplified schematic view of the water injector according to the preferred embodiment in normal operation, and
- Figures 3 to 6
- simplified, schematic views of the water injection device according to the invention, on the basis of which the method according to the invention is explained.
Nachfolgend wird unter Bezugnahme auf die
In
Am Einlasskanal 22 ist ferner ein Wasserinjektor 6 angeordnet, welcher über eine Steuereinheit 10 Wasser in den Einlasskanal 22 der Brennkraftmaschine 2 einspritzt. In diesem Ausführungsbeispiel ist ein Wasserinjektor 6 pro Zylinder vorgesehen. Alternativ können zur besseren Aufbereitung oder zur Erhöhung der pro Verbrennungszyklus maximal einspritzbaren Wassermenge zwei Wasserinjektoren pro Zylinder angeordnet sein.A
In
In
Dafür wird bevorzugt ein Kondensat eines nicht gezeigten Verdampfers einer Klimaanlage verwendet, wozu die erfindungsgemäße Wassereinspritzvorrichtung 1 eine Zulaufleitung 11 aufweist.A condensate of an evaporator (not shown) of an air conditioning system is preferably used for this, for which purpose the
Alternativ oder zusätzlich zum Kondensat kann deionisiertes Wasser über eine Nachfüllleitung 12 in den Wassertank 5 gefördert werden. In der Nachfüllleitung 12 kann optional ein Sieb vorgesehen sein. Ferner sind ein Vorfilter 16 in der ersten Leitung 7 und ein Feinfilter 17 in der zweiten Leitung 8 angeordnet, welche optional beheizt werden können.As an alternative or in addition to the condensate, deionized water can be pumped into the
Wird nun über die Steuereinheit 10, welche bevorzugt als die Steuereinheit der Brennkraftmaschine 2 ausgebildet ist, eine Wassereinspritzung unter normalen Umgebungstemperaturen angefordert, so wird mittels des Förderelements 3 Wasser aus dem Wassertank 5 angesaugt. Zum Einstellen des gewünschten Systemdrucks im Verteiler 9 ist ein Druckregler 15 in der Form einer Blende 15a und eines Rückschlagventils 15b in einer Rücklaufleitung 13 angeordnet, welche die Förderleitung 8 mit dem Wassertank 5 verbindet. Nach einer alternativen Ausgestaltung der Erfindung kann nur das Rückschlagventil 15b als der Druckregler 15 benutzt werden. Zur Druckregelung ist ferner ein Drucksensor 14 in der Förderleitung 8 vorgesehen. Des Weiteren ist ein Temperatur- bzw. Füllstandssensor 18 vorgesehen.If a water injection under normal ambient temperatures is now requested via the
Wenn allerdings die Wassereinspritzvorrichtung 1 bei Temperaturen unterhalb des Gefrierpunktes des Wassers beim Fahren oder Abstellen der Brennkraftmaschine deaktiviert ist, kann es aufgrund des in der Wassereinspritzvorrichtung 1 stehenden Wassers zu einer Vereisung von wasserführenden Komponenten und insbesondere der Wasserinjektoren 6 führen.However, if the
Um eine solche Vereisung zu vermeiden, wird das Wasser, welches sich in den Wasserinjektoren 6 befindet, insbesondere im Abstellfall der Brennkraftmaschine 2, aus den Wasserinjektoren 6 abgesaugt. Dazu wird der Antrieb 4 des Förderelements 3 über die Steuereinheit 10 gesteuert, die Betriebsrichtung des Förderelements 3 zu ändern, so dass das Wasser in einer zweiten Förderrichtung X2 durch die Förderleitung 8 und die Ansaugleitung 7 zum Wassertank 5 zugeführt wird.In order to avoid such icing, the water which is in the
Nachdem Unterdruck in der Förderleitung 8 aufgebaut ist, werden die Wasserinjektoren 6a, 6b, 6c und 6d über die Steuereinheit 10 nacheinander geöffnet. Dies wird in den
Beim Öffnen der Wasserinjektoren 6 tritt Luft in die Wasserinjektoren 6 aufgrund des Unterdrucks in der Förderleitung 8 ein, was mit dem Bezugszeichen P bezeichnet ist. Durch die eintretende Luft wird das Wasser schnell zum Wassertank 5 gefördert.When the
Insbesondere wird der erste Wasserinjektor 6a für eine erste Ansteuerzeit geöffnet und wieder geschlossen. Somit wird das Wasser des ersten Wasserinjektors 6a zurück in den Wassertank 5 gefördert (
Nachdem eine vorbestimmte Zeit abgelaufen ist, wird der zweite Wasserinjektor 6b für eine zweite Ansteuerzeit geöffnet und wieder geschlossen, so dass der zweite Wasserinjektor 6b entleert wird (
In anderen Worten wird vorzugsweise jeder Wasserinjektor 6 geschlossen, bevor das Entleeren des nächsten Wasserinjektors 6 erfolgt. Somit kann die maximale Ansaugkraft des Förderelements 3 zum Entleeren jedes Wasserinjektors 6 benutzt, wodurch sichergestellt wird, dass keine Wasserreste in den Wasserinjektoren 6 verbleiben.In other words, each
Um eine gleichmäßige Entleerung aller Wasserinjektoren 6 zu ermöglichen, sind die erste Ansteuerzeit für den ersten Wasserinjektor 6a, die zweite Ansteuerzeit für den zweiten Wasserinjektor 6b sowie eine dritte Ansteuerzeit für den dritten Wasserinjektor 6c und eine vierte Ansteuerzeit für den vierten Wasserinjektor 6d gleich. Im Rahmen der Erfindung können die Wasserinjektoren 6 aber auch für unterschiedliche Zeiten geöffnet werden.In order to enable all
Das Absaugen des Wassers des ersten Wasserinjektors 6a, des zweiten Wasserinjektors 6b, des dritten Wasserinjektors 6c und des vierten Wasserinjektors 6d sind in den
Es sei angemerkt, dass die Reihenfolge, in welcher die Wasserinjektoren 6 geöffnet werden, an die jeweiligen Anforderungen angepasst werden kann.It should be noted that the order in which the
Durch die erfindungsgemäße Wassereinspritzvorrichtung 1 werden die Wasserinjektoren 6 vor einem Gefrieren, insbesondere im Abstellfall der Brennkraftmaschine 2, geschützt. Eine ausfallsichere Funktionsweise der Wassereinspritzvorrichtung 1 und damit der Brennkraftmaschine 2 wird hierdurch sichergestellt.The
Claims (4)
- Method for operating a water injection apparatus (1) with at least two water injectors (6a, 6b) and a conveying element (3) of an internal combustion engine (2), the water injection apparatus (1) comprising a conveying element (3), configured as a pump, and an electric drive (4) for driving the pump, a water tank (5) being provided, furthermore, which is connected by way of an intake line (7) to the conveying element (3), a conveying line (8) connecting the conveying element (3) to a distributor (9), to which a multiplicity of water injectors (6) are connected, the water injectors (6a, 6b) being opened one after another via a control unit (10), the conveying element (3) feeding water which is situated in the water injectors (6a, 6b) to the water tank (5) of the water injection apparatus (1) when the water injectors (6a, 6b) are open, in order to avoid icing up of the water injectors (6a, 6b), water which is situated in the water injectors (6a, 6b), in particular in the case of the internal combustion engine (2) being turned off, being extracted from the water injectors (6a, 6b) using negative pressure, the drive (4) of the conveying element (3) being controlled via the control unit (10) so as to change the operating direction of the conveying element (3), with the result that water is fed in a second conveying direction (X2) through the conveying line (8) and the intake line (7) to the water tank (5), the water injectors (6a, 6b) being opened one after another via the control unit (10) after negative pressure in the conveying line (8) is dissipated.
- Method according to Claim 1, the water injectors (6a, 6b) being opened after the internal combustion engine (2) is turned off, in particular after each instance of the internal combustion engine (2) being turned off.
- Method according to Claim 1 or 2, the second water injector (6b) being opened when the first water injector (6a) is closed.
- Method according to Claim 3, the second water injector (6b) being opened after a predefined time after the closure of the first water injector (6a) has elapsed.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015208508.2A DE102015208508A1 (en) | 2015-05-07 | 2015-05-07 | Water injection device for an internal combustion engine and method for operating such a water injection device |
PCT/EP2016/058519 WO2016177561A1 (en) | 2015-05-07 | 2016-04-18 | Water injection device for an internal combustion engine and method for operating a water injection device of said type |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3292289A1 EP3292289A1 (en) | 2018-03-14 |
EP3292289B1 true EP3292289B1 (en) | 2023-02-22 |
Family
ID=55755604
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16716879.8A Active EP3292289B1 (en) | 2015-05-07 | 2016-04-18 | Method for operating a water injection device for an internal combustion engine |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3292289B1 (en) |
CN (1) | CN107636293B (en) |
DE (1) | DE102015208508A1 (en) |
WO (1) | WO2016177561A1 (en) |
Families Citing this family (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016216235A1 (en) * | 2016-08-29 | 2018-03-01 | Bayerische Motoren Werke Aktiengesellschaft | APPARATUS FOR WATER INJECTION IN A VEHICLE AND METHOD FOR OPERATING SUCH A DEVICE |
DE102017200045A1 (en) * | 2017-01-04 | 2018-07-05 | Robert Bosch Gmbh | Water injection apparatus |
DE102017200298A1 (en) * | 2017-01-10 | 2018-07-12 | Robert Bosch Gmbh | Water injection device of an internal combustion engine and method for operating such a water injection device |
DE102017203609A1 (en) | 2017-02-23 | 2018-08-23 | Mahle International Gmbh | Device for injecting water into an internal combustion engine |
DE102017114213A1 (en) | 2017-06-27 | 2018-12-27 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Water injection valve arrangement |
DE102017211907A1 (en) * | 2017-07-12 | 2019-01-17 | Robert Bosch Gmbh | Distributor device for a water injection device of an internal combustion engine |
DE102017214481A1 (en) * | 2017-08-21 | 2019-02-21 | Robert Bosch Gmbh | Water injection device for an internal combustion engine |
DE102017215751A1 (en) * | 2017-09-07 | 2019-03-07 | Robert Bosch Gmbh | Water injection device with at least two tanks |
DE102017220914A1 (en) * | 2017-11-23 | 2019-05-23 | Robert Bosch Gmbh | Water injection device of an internal combustion engine |
DE102017222170B4 (en) * | 2017-12-07 | 2022-12-08 | Bayerische Motoren Werke Aktiengesellschaft | Switching behavior of injectors in a combustion engine |
FR3077340B1 (en) * | 2018-01-29 | 2022-07-15 | Plastic Omnium Advanced Innovation & Res | SYSTEM FOR INJECTION OF AN AQUEOUS SOLUTION INTO AN INJECTION ENGINE |
JP6907973B2 (en) * | 2018-03-12 | 2021-07-21 | トヨタ自動車株式会社 | Internal combustion engine control device |
DE102018206884A1 (en) * | 2018-05-04 | 2019-11-07 | Robert Bosch Gmbh | Method and device for filling an injection device for injecting water into an internal combustion engine |
DE102018208469B4 (en) | 2018-05-29 | 2024-02-08 | Kautex Textron Gmbh & Co. Kg | ARRANGEMENT AND METHOD FOR EMPTYING AT LEAST ONE LINE CONNECTED TO A LIQUID TANK |
FR3081923B1 (en) * | 2018-05-30 | 2021-06-11 | Plastic Omnium Advanced Innovation & Res | SYSTEM FOR INJECTING AN AQUEOUS SOLUTION IN AN INJECTION ENGINE |
DE102018208655A1 (en) * | 2018-05-30 | 2019-12-05 | Bayerische Motoren Werke Aktiengesellschaft | Water injection system for an internal combustion engine and motor vehicle with such a water injection system |
DE102018208901A1 (en) * | 2018-06-06 | 2019-12-12 | Robert Bosch Gmbh | Water injection device for an internal combustion engine |
DE102018210965A1 (en) * | 2018-07-04 | 2020-01-09 | Robert Bosch Gmbh | Water extraction device for a water injection device for an internal combustion engine |
DE102018220385A1 (en) | 2018-11-28 | 2020-05-28 | Robert Bosch Gmbh | Injection valve for a water injection system of an internal combustion engine and water injection system with such an injection valve |
DE102018220394A1 (en) | 2018-11-28 | 2020-05-28 | Robert Bosch Gmbh | Device for injecting water into a combustion chamber or into an intake tract of an internal combustion engine |
DE102019112907A1 (en) * | 2019-05-16 | 2020-11-19 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Water injection device of an internal combustion engine and method for venting a water rail of a water injection device |
DE102019210142A1 (en) * | 2019-07-10 | 2021-01-14 | Robert Bosch Gmbh | Injection valve for a water injection system of an internal combustion engine and water injection system with such an injection valve |
DE102020108134B3 (en) * | 2020-03-25 | 2021-07-08 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Internal combustion engine |
DE102020205582A1 (en) | 2020-05-04 | 2021-11-04 | Robert Bosch Gesellschaft mit beschränkter Haftung | Injection valve for a water injection system of an internal combustion engine and water injection system with such an injection valve |
DE102020205585A1 (en) | 2020-05-04 | 2021-11-04 | Robert Bosch Gesellschaft mit beschränkter Haftung | Injection valve for a water injection system of an internal combustion engine and water injection system with such an injection valve |
DE102020207594A1 (en) | 2020-06-19 | 2021-12-23 | Robert Bosch Gesellschaft mit beschränkter Haftung | Injection valve for a water injection system of an internal combustion engine and water injection system with such an injection valve |
DE102020212241A1 (en) | 2020-09-29 | 2022-03-31 | Robert Bosch Gesellschaft mit beschränkter Haftung | Injection valve for a water injection system of an internal combustion engine and water injection system with such an injection valve |
DE102020213842A1 (en) | 2020-11-04 | 2022-05-05 | Robert Bosch Gesellschaft mit beschränkter Haftung | Injection valve for a water injection system of an internal combustion engine and water injection system with such an injection valve |
DE102020214479A1 (en) | 2020-11-18 | 2022-05-19 | Robert Bosch Gesellschaft mit beschränkter Haftung | Injection valve for a water injection system of an internal combustion engine and water injection system with such an injection valve |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012220943A1 (en) * | 2011-11-30 | 2013-06-06 | Ford Global Technologies, Llc | Method for an exhaust gas fluid sensor |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4805571A (en) * | 1985-05-15 | 1989-02-21 | Humphrey Cycle Engine Partners, L.P. | Internal combustion engine |
US5125366A (en) * | 1990-10-11 | 1992-06-30 | Hobbs Cletus L | Water introduction in internal combustion engines |
DE4416886A1 (en) * | 1994-05-13 | 1995-11-16 | Mak Maschinenbau Krupp | Device for injecting water into diesel engines |
CN101135280A (en) * | 2007-10-01 | 2008-03-05 | 绵阳新晨动力机械有限公司 | Four-stroke petrol engine inner-vat sprinkler |
EP2923063A4 (en) * | 2012-11-20 | 2016-08-17 | Nostrum Energy Pte Ltd | Internally cooled exhaust gas recirculation system for internal combustion engine and method thereof |
DE102013204474A1 (en) * | 2013-03-14 | 2014-09-18 | Bayerische Motoren Werke Aktiengesellschaft | Injection system and method for operating an injection system |
DE102014204509A1 (en) * | 2014-03-12 | 2015-09-17 | Bayerische Motoren Werke Aktiengesellschaft | Water injection system for an internal combustion engine |
RU146725U1 (en) * | 2014-04-09 | 2014-10-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Вологодская государственная молочнохозяйственная академия имени Н.В. Верещагина" | SYSTEM FOR PRODUCING AND FEEDING A FUEL-WATER MIXTURE IN ICE |
-
2015
- 2015-05-07 DE DE102015208508.2A patent/DE102015208508A1/en not_active Withdrawn
-
2016
- 2016-04-18 WO PCT/EP2016/058519 patent/WO2016177561A1/en active Application Filing
- 2016-04-18 EP EP16716879.8A patent/EP3292289B1/en active Active
- 2016-04-18 CN CN201680026640.7A patent/CN107636293B/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012220943A1 (en) * | 2011-11-30 | 2013-06-06 | Ford Global Technologies, Llc | Method for an exhaust gas fluid sensor |
Also Published As
Publication number | Publication date |
---|---|
CN107636293B (en) | 2020-03-20 |
EP3292289A1 (en) | 2018-03-14 |
DE102015208508A1 (en) | 2016-11-10 |
WO2016177561A1 (en) | 2016-11-10 |
CN107636293A (en) | 2018-01-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP3292289B1 (en) | Method for operating a water injection device for an internal combustion engine | |
EP3292297B1 (en) | Water injection device of an internal combustion engine | |
EP2657502B1 (en) | High pressure injection strip for a fuel injection system for an internal combustion engine | |
DE102004009792B3 (en) | Fuel supply device for supplying the injectors to the combustion chambers of an internal combustion engine with fuel | |
EP3292291B1 (en) | Water injection device of an internal combustion engine, and method for operating a water injection device of said type | |
EP3346120B1 (en) | Water injection device of a combustion engine and method for operating same | |
EP1537325B1 (en) | Fuel injection device for an internal combustion engine | |
EP2217795B1 (en) | Fuel injection system for an internal combustion engine, comprising a hydrocarbon injector | |
EP1702157A1 (en) | Fuel injection device for an internal combustion engine | |
WO2018127316A1 (en) | Water injection device | |
DE19954695A1 (en) | Fuel injection system | |
EP1826396B1 (en) | Common rail fuel injection system | |
DE10137869A1 (en) | Injection system and method for its operation | |
EP1530681B2 (en) | Fuel injection device for an internal combustion engine | |
DE102010004215B4 (en) | A device for preventing engine stall in a vehicle equipped with a diesel injection system | |
DE102006060299A1 (en) | Method for operating a fuel system for an internal combustion engine | |
WO2004027250A1 (en) | Fuel injection unit for internal combustion engines | |
EP1361359B1 (en) | Fuel injection device for internal combustion engines | |
DE102013204093B4 (en) | Method for venting a fuel supply line and an internal combustion engine | |
DE19941850B4 (en) | Injection system for an internal combustion engine | |
DE19839579C1 (en) | Two=stage filtering system for fuel supply to injectors | |
WO2005038236A1 (en) | Fuel injection device for an internal combustion engine | |
DE102010064171A1 (en) | Pressure control arrangement of a fuel supply system | |
AT512437A1 (en) | DEVICE FOR INJECTING FUEL IN THE COMBUSTION ENGINE OF AN INTERNAL COMBUSTION ENGINE | |
DE102017214481A1 (en) | Water injection device for an internal combustion engine |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
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 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20171207 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ROBERT BOSCH GMBH |
|
17Q | First examination report despatched |
Effective date: 20200417 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
INTG | Intention to grant announced |
Effective date: 20221122 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
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: AT Ref legal event code: REF Ref document number: 1549662 Country of ref document: AT Kind code of ref document: T Effective date: 20230315 Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 502016015604 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG9D |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: MP Effective date: 20230222 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: RS 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: 20230222 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: 20230622 Ref country code: NO 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: 20230522 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: 20230222 Ref country code: LV 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: 20230222 Ref country code: LT 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: 20230222 Ref country code: HR 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: 20230222 Ref country code: ES 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: 20230222 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20230627 Year of fee payment: 8 |
|
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: 20230222 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: 20230222 Ref country code: IS 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: 20230622 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: 20230523 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: 20230222 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SM 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: 20230222 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: 20230222 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: 20230222 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: 20230222 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: 20230222 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20230420 Year of fee payment: 8 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 502016015604 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
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: 20230222 |
|
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: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20230418 |
|
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 |
|
REG | Reference to a national code |
Ref country code: BE Ref legal event code: MM Effective date: 20230430 |
|
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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230222 |
|
26N | No opposition filed |
Effective date: 20231123 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
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: 20230222 Ref country code: MC 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: 20230222 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20230430 Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20230422 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20230430 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: MM4A |
|
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 NON-PAYMENT OF DUE FEES Effective date: 20230430 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20230418 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20230418 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20230222 |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MM01 Ref document number: 1549662 Country of ref document: AT Kind code of ref document: T Effective date: 20230418 |