EP4090844B1 - Commutateur de course d'aiguille et injecteur de carburant doté dudit commutateur de course d'aiguille - Google Patents

Commutateur de course d'aiguille et injecteur de carburant doté dudit commutateur de course d'aiguille Download PDF

Info

Publication number
EP4090844B1
EP4090844B1 EP21716974.7A EP21716974A EP4090844B1 EP 4090844 B1 EP4090844 B1 EP 4090844B1 EP 21716974 A EP21716974 A EP 21716974A EP 4090844 B1 EP4090844 B1 EP 4090844B1
Authority
EP
European Patent Office
Prior art keywords
seat plate
injector
ceramic
stroke switch
accordance
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
Application number
EP21716974.7A
Other languages
German (de)
English (en)
Other versions
EP4090844A1 (fr
Inventor
Norbert SCHÖFBÄNKER
Richard Pirkl
Klaus Weraneck
Carina Rauscher
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.)
Liebherr Components Deggendorf GmbH
Original Assignee
Liebherr Components Deggendorf GmbH
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 Liebherr Components Deggendorf GmbH filed Critical Liebherr Components Deggendorf GmbH
Publication of EP4090844A1 publication Critical patent/EP4090844A1/fr
Application granted granted Critical
Publication of EP4090844B1 publication Critical patent/EP4090844B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
    • 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
    • F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
    • F02M65/005—Measuring or detecting injection-valve lift, e.g. to determine injection timing
    • 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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
    • F02M51/0671—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto
    • 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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/166—Selection of particular materials
    • 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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F02M61/1886—Details of valve seats not covered by groups F02M61/1866 - F02M61/188
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/90—Selection of particular materials
    • F02M2200/9007—Ceramic materials
    • 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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting

Definitions

  • the present invention relates to a needle lift switch and a fuel injector with such a needle lift switch.
  • Such an injector typically has a nozzle needle (also: injector needle), which allows high-pressure fuel to escape to the outside when an outlet hole in the injector is released.
  • this nozzle needle acts like a plug allows fuel to escape when lifted. It is therefore necessary to lift this needle at relatively short intervals and to allow it to slide back into the outlet opening after a short time.
  • Hydraulic servo valves can be used to trigger this movement. Such valves, in turn, are controlled using an electromagnet. Alternatively, a piezo element can be used that reacts faster than the valve controlled by an electromagnet.
  • so-called servo valves are used, which control the nozzle needle and are themselves controlled via an electromagnetic valve or piezo valve.
  • a pressure level is built up using the fuel available under high pressure, which acts on the nozzle needle in the closing direction.
  • This control chamber or this control valve is typically connected to the high-pressure area of the fuel via an inlet throttle.
  • this control room has a small, closable outlet throttle from which the fuel can escape to a low-pressure area. If he does this, the pressure in the control chamber and the closing force acting on the nozzle needle are reduced because the high-pressure fuel in the control chamber can flow away. This causes the nozzle needle to move, which opens the outlet opening at the injector tip.
  • the outlet throttle of the valve is either closed or opened using an anchor element.
  • the injector state detection is of great importance for the controlled operation of the injector.
  • a seat plate of the injector which is electrically separated from the injector housing and passes current through at certain points so that the control valve arranged underneath and the nozzle needle are connected to the injector coil arranged above it.
  • the ability to pass an electrical signal through the seat plate is advantageous in terms of status detection, since when the injector is closed, an electrical circuit can be generated via which the contact of the nozzle needle in the nozzle needle seat of the injector. The prerequisite for this is of course that this electrical circuit is not already closed at another point, so that, among other things, the seat plate must be electrically insulated from the injector housing. The electrical circuit may only be closed via the nozzle needle and the nozzle needle seat.
  • the seat plate of the injector is therefore a component which, according to the invention, is used both as a contact element for passing through an electrical signal and at the same time must be insulated from the injector housing. Furthermore, the seat plate contains a passage running from top to bottom, which represents the outlet throttle of an injector. By placing an anchor element and sealing the passage, the control chamber underneath is filled with high-pressure fuel via an inlet, so that the nozzle needle is pushed into its closed position. When the anchor element is lifted from a through opening, the fuel stored under high pressure flows out and reduces the influence of force acting on the nozzle needle, so that it lifts off from its outlet openings and fuel can thereby flow out.
  • the needle lift switch for a fuel injector has a seat plate with a plate-like base body and a passage connecting the two flat sides of the plate-like base body, an anchor element which is connected to the passage the seat plate can be lifted off and placed thereon in a sealing manner, and comprises a control valve which is arranged on the side of the seat plate opposite the anchor element and is designed to interact with a nozzle needle, the seat plate being electrically insulated from an injector housing surrounding it and having an electrical connection to it the injector housing can only be achieved via the nozzle needle that interacts with the seat plate.
  • the needle lift switch is characterized in that at least one ceramic and/or plastic part contacting the seat plate is present to insulate the seat plate from the surrounding injector housing.
  • the at least one ceramic and/or plastic part is an all-ceramic part. Ceramic is dimensionally stable, particularly under high and pulsating pressure loads, and exhibits outstanding wear resistance.
  • the at least one ceramic and/or plastic part can be designed to be detachable from the seat plate. It is therefore clear that the ceramic and/or plastic part does not merely represent a coating of the seat plate but is a separate part from the seat plate.
  • the nozzle needle base body is made of an electrically conductive material, for example a metal, and preferably the plastic and/or ceramic sleeve is made of an electrical insulator, which contains, for example, the components Al 2 O 3 , Zr 2 O 3 and/or Si 3 Ni 3 or consists of at least one of these components.
  • Zirconium oxide is particularly advantageous in use here because it has a very similar thermal expansion coefficient to steel and is therefore also well suited for press fittings. Due to the almost identical thermal expansion behavior, press fittings can also be realized for applications with high temperature fluctuations (e.g. in injection nozzles). Zirconium oxide is very tough compared to other ceramic materials and can therefore be used particularly advantageously in the event of sudden or pulsating stresses, such as those caused by pressure waves in the injector. Tribologically, zirconium oxide has clear advantages compared to aluminum oxide because it hardly causes any wear on the contact partners.
  • the at least one ceramic and / or plastic part has a sleeve shape, in particular a ring shape or a cylindrical jacket shape, which is suitable for radially surrounding the seat plate, the seat plate preferably being inserted into the sleeve-shaped ceramic and / or plastic part in order to achieve radial centering of the seat plate and to form electrical insulation between the seat plate and the injector housing.
  • This sleeve-shaped ceramic and/or plastic part essentially serves to protect the current-carrying seat plate from direct electrical contact with the injector housing surrounding the seat plate. Contact with the injector housing should only take place via the nozzle needle and the nozzle needle seat that accommodates the nozzle needle when the injector is closed, in order to easily detect whether the injector is open or closed.
  • the sleeve-shaped ceramic and/or plastic part is firmly connected to the injector housing for radially surrounding the seat plate, preferably by a material or positive connection such as gluing or soldering.
  • the at least one ceramic and / or plastic part is a seat part that cooperates with the anchor element and can be placed sealingly on the passage of the seat plate, the seat part preferably having a cylindrical shape.
  • the seat part can have rounded corners for placing on the passage of the seat plate in order to avoid the edges breaking off, with the mass finishing process preferably being used to produce the rounded corners. Providing rounded corners is advantageous because it can prevent the edges from breaking off during operation.
  • the seat part can be a ceramic part, which is preferably produced by hot isostatic pressing. Ceramic also shows excellent wear resistance even when the fuel contains small solid particles that have an abrasive effect when flowing along the seat part achieve.
  • the injector injects fuel and the seat part is lifted from the passage of the seat plate, fuel flows out of the passage at a very high speed and comes into contact with the seat part.
  • the seat part electrically insulates the seat plate from the anchor element and from an anchor guide of the anchor element.
  • the at least one ceramic and / or plastic part is a seat plate support, which is arranged on the flat side of the plate-like base body of the seat plate facing the anchor element, and the seat plate is supported by an anchor guide of the anchor element or the Injector housing electrically insulated.
  • the seat plate support rests on the flat side of the plate-like base body of the seat plate facing the anchor element and preferably has a ring shape.
  • the seat plate support prevents conductive contact from the anchor guide to the seat plate, so that it is electrically insulated from it.
  • the invention further relates to a fuel injector with a needle lift switch according to one of the preceding variants.
  • the fuel injector has an injector state detection, which detects an injector state of a closed injector based on a current flowing through the nozzle needle and injector housing.
  • the invention also includes an engine with a fuel injector according to one of the above variants.
  • Fig. 1 shows a partial sectional view of an injector 10 from the prior art. You can see the injector 10, which has a housing 14 in which several injector components are arranged. Essential to the function of the injector 10 are the injector needle 15, the valve formed by the armature 11 and seat plate 1 and the electromagnet 12, 13, which has a coil winding 16, an inner magnetic pole 12 and an outer magnetic pole 13. In addition, a recess is provided in the inner magnetic pole 12 for arranging the spring 17, which presses the anchor element 11 in the direction of the valve in order to close the outlet throttle of the valve in a fluid-tight manner when the electromagnet 12, 13 is de-energized.
  • the electromagnet 12, 13 If the electromagnet 12, 13 is activated, it pulls the anchor element 11 away from the valve with the help of magnetic force, so that high-pressure fuel can flow out of the passage 6 from a control chamber that can be closed by the valve. Since this reduces the pressure in the control chamber that acts on the injector needle 15, it can slide out of a closed position and enables fuel to be dispensed from the injector 10. However, if the electromagnet 12, 13 is put into a de-energized state, the magnetic force acting on the anchor element 11, so that the spring element 17 presses the anchor element 11 onto the outlet opening of the valve and seals the control chamber or the passage 6. This causes the pressure acting on the injector needle 15 to increase, causing it to return to its closed position is pressed. This means that fuel no longer flows out of the outlet opening of the injector 10.
  • Fig. 2 shows a sectional view of an injector 10 with a needle lift switch 20 according to the invention.
  • a sleeve-shaped ceramic and/or plastic part 3 which surrounds the seat plate in the radial circumferential direction.
  • the sleeve 3 can be firmly connected to the injector housing, in particular glued or soldered. In addition to electrical insulation, the sleeve 3 serves to radially center the seat plate 1.
  • a seat part 4 can be seen, which preferably consists of ceramic (e.g. Al 2 O 3 or Si 2 Ni 3 ), and interacts with the anchor element 11 in such a way that it can close the passage 6 of the seat plate. If the anchor element 11 is pulled by the seat plate 1, the passage 6 of the seat plate 1 also opens and high-pressure fuel flows out, so that the pressure in the control chamber drops and the nozzle needle 15 lifts out of its nozzle needle seat comes.
  • ceramic e.g. Al 2 O 3 or Si 2 Ni 3
  • an insulating seat part 4 is now provided between the anchor element 11 and the seat plate.
  • This generally cylindrical element can have rounded edges and must be checked for cracks due to the dynamic impacting stress. It is also advantageous if it is produced using hot isostatic pressing.
  • the seat part if it is made of ceramic, since ceramic has excellent wear resistance and is particularly durable against the abrasive effects of solid particles present in the fuel. Fuel flows at high speed at the underside of the seat part 4 if the injector is in its open position.
  • the seat part 4 electrically insulates the seat plate 1 from the anchor element 11 and the anchor guide or the injector housing.
  • a seat plate support 5 is shown as a further ceramic and/or plastic part, which separates the seat plate 1 from the anchor guide or the injector housing 14 on its side facing the anchor element 11.
  • the seat plate support is advantageously made of ceramic. Ceramic remains dimensionally stable even under high pressure loads, so that deformation that changes the armature stroke setting cannot occur.
  • the seat plate support 5 is advantageously in a ring which has an inner diameter that is larger than the outer diameter of the seat part 4. Finally, both ceramic and/or plastic parts 4, 5 rest on the flat side of the seat plate 1 facing the anchor element 11.
  • Fig. 3 is an enlarged view Fig. 2 , from which you can see the ceramic and/or plastic parts particularly well.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Electromagnetism (AREA)
  • Fuel-Injection Apparatus (AREA)

Claims (15)

  1. Commutateur de course d'aiguille (20) pour un injecteur de carburant (10), comprenant :
    une plaque de siège (1) dotée d'un corps de base en forme de plaque et d'un passage (6) reliant les deux côtés plans du corps de base en forme de plaque,
    un élément d'ancrage (11) qui peut être soulevé du passage (6) de la plaque de siège (1) et placé sur celui-ci de manière étanchéifiante, et
    une soupape de commande (2) qui est disposée sur le côté de la plaque de siège (1) opposé à l'élément d'ancrage (11) et qui est conçue pour coopérer avec une aiguille d'injection (15), dans lequel
    la plaque de siège (1) est isolée électriquement par rapport à un boîtier d'injecteur (14) l'entourant et une liaison électrique avec le boîtier d'injecteur (14) est réalisable uniquement par le biais de l'aiguille d'injection (15) coopérant avec la plaque de siège (1),
    caractérisé par
    au moins une pièce en céramique et/ou en matière plastique (3, 4, 5) en contact avec la plaque de siège (1) pour réaliser l'isolation de la plaque de siège (1) par rapport au boîtier d'injecteur (14) l'entourant.
  2. Commutateur de course d'aiguille (20) selon la revendication 1, dans lequel l'au moins une pièce en céramique et/ou en matière plastique (3, 4, 5) est une pièce en céramique intégrale.
  3. Commutateur de course d'aiguille (20) selon l'une des revendications précédentes, dans lequel l'au moins une pièce en céramique et/ou en matière plastique (3, 4, 5) est réalisée de manière détachable par rapport à la plaque de siège (1).
  4. Commutateur de course d'aiguille (20) selon l'une des revendications précédentes, dans lequel l'au moins une pièce en céramique et/ou en matière plastique (3, 4, 5) comprend les constituants Al2O3, Si3Ni3 et/ou Zr2O3 ou est constituée d'au moins un de ces constituants.
  5. Commutateur de course d'aiguille (20) selon l'une des revendications précédentes, dans lequel l'au moins une pièce en céramique et/ou en matière plastique (3) présente une forme de manchon, en particulier une forme de bague ou une forme d'enveloppe de cylindre, qui est adaptée pour entourer radialement la plaque de siège (1), la plaque de siège (1) étant de préférence insérée dans la pièce en céramique et/ou en matière plastique (3) en forme de manchon, pour obtenir un centrage radial de la plaque de siège (1) et former une isolation électrique entre la plaque de siège (1) et le boîtier d'injecteur (14).
  6. Commutateur de course d'aiguille (20) selon la revendication 5, dans lequel la pièce en céramique et/ou en matière plastique (3) en forme de manchon destinée à entourer radialement la plaque de siège (1) est solidement fixée au boîtier d'injecteur (14), de préférence par un assemblage par liaison de matière ou par complémentarité de forme tel que par collage ou par soudage.
  7. Commutateur de course d'aiguille (20) selon l'une des revendications précédentes, dans lequel l'au moins une pièce en céramique et/ou en matière plastique est une pièce de siège (4), qui coopère avec l'élément d'ancrage (11) et qui peut être placée sur le passage (6) de la plaque de siège (1) de manière étanchéifiante, la pièce de siège (4) présentant de préférence une forme de cylindre.
  8. Commutateur de course d'aiguille (20) selon la revendication 7, dans lequel la pièce de siège (4) destinée à être placée sur le passage (6) de la plaque de siège (1) présente des angles arrondis afin d'éviter une rupture des bords, le procédé de tribofinition étant de préférence utilisé pour fabriquer les angles arrondis.
  9. Commutateur de course d'aiguille (20) selon l'une des revendications précédentes 7 ou 8, dans lequel la pièce de siège (4) est une pièce en céramique qui est de préférence fabriquée par compression isostatique à chaud.
  10. Commutateur de course d'aiguille (20) selon l'une des revendications précédentes 7 à 9, dans lequel la pièce de siège (4) isole électriquement la plaque de siège (1) par rapport à l'élément d'ancrage (11) et à un guidage d'ancrage de l'élément d'ancrage (11).
  11. Commutateur de course d'aiguille (20) selon l'une des revendications précédentes, dans lequel l'au moins une pièce en céramique et/ou en matière plastique est un support de plaque de siège (5) qui est disposé sur le côté plan orienté vers l'élément d'ancrage (11) du corps de base en forme de plaque de la plaque de siège (1), et la plaque de siège (1) est isolée électriquement par rapport à un guidage d'ancrage de l'élément d'ancrage (11) ou au boîtier d'injecteur (14).
  12. Commutateur de course d'aiguille (20) selon la revendication 11, dans lequel le support de plaque de siège (5) repose sur le côté plan orienté vers l'élément d'ancrage (11) du corps de base en forme de plaque de la plaque de siège (1) et présente de préférence un forme de bague.
  13. Injecteur de carburant (10) doté d'un commutateur de course d'aiguille (20) selon l'une des revendications précédentes.
  14. Injecteur de carburant (10) selon la revendication 13, dans lequel l'injecteur de carburant (10) dispose d'une reconnaissance d'état d'injecteur qui reconnaît un état d'injecteur d'un injecteur (10) fermé à l'aide d'un courant circulant dans l'aiguille d'injection (15) et le boîtier d'injecteur (14).
  15. Moteur doté d'un injecteur de carburant (10) selon la revendication 13 ou 14.
EP21716974.7A 2020-03-30 2021-03-25 Commutateur de course d'aiguille et injecteur de carburant doté dudit commutateur de course d'aiguille Active EP4090844B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020108668.7A DE102020108668A1 (de) 2020-03-30 2020-03-30 Nadelhubschalter und Kraftstoffinjektor mit einem solchen Nadelhubschalter
PCT/EP2021/057776 WO2021198024A1 (fr) 2020-03-30 2021-03-25 Commutateur de course d'aiguille et injecteur de carburant doté dudit commutateur de course d'aiguille

Publications (2)

Publication Number Publication Date
EP4090844A1 EP4090844A1 (fr) 2022-11-23
EP4090844B1 true EP4090844B1 (fr) 2024-02-21

Family

ID=75426563

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21716974.7A Active EP4090844B1 (fr) 2020-03-30 2021-03-25 Commutateur de course d'aiguille et injecteur de carburant doté dudit commutateur de course d'aiguille

Country Status (5)

Country Link
US (1) US20230146257A1 (fr)
EP (1) EP4090844B1 (fr)
CN (1) CN115349052A (fr)
DE (1) DE102020108668A1 (fr)
WO (1) WO2021198024A1 (fr)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6220980A (ja) 1985-07-18 1987-01-29 Diesel Kiki Co Ltd 電磁弁
GB8627868D0 (en) 1986-11-21 1986-12-31 Lucas Ind Plc Fuel injection nozzle
DE3834444A1 (de) 1988-10-10 1990-04-12 Mesenich Gerhard Elektromagnetisches einspritzventil mit membranfeder
JP3719468B2 (ja) 1996-09-02 2005-11-24 株式会社デンソー 蓄圧式燃料噴射装置
DE102005018589A1 (de) 2005-04-21 2006-11-02 Siemens Ag Nadelführungskörper für einen Injektor eines Einspritzsystems sowie Kontaktiervorrichtung mit einem Nadelführungskörper und Injektor mit einer Kontaktiervorrichtung
JP2009197947A (ja) 2008-02-22 2009-09-03 Denso Corp 電磁弁および燃料噴射弁
FR3050770B1 (fr) 2016-04-29 2019-12-20 Delphi Technologies Ip Limited Injecteur de carburant
DE102017116383A1 (de) 2017-07-20 2019-01-24 Liebherr-Components Deggendorf Gmbh Injektor zum Einspritzen von Krafstoff
DE102018101351A1 (de) * 2018-01-22 2019-07-25 Liebherr-Components Deggendorf Gmbh Sitzplatte für einen Injektor und Verfahren zur Herstellung einer solchen Sitzplatte
DE102019121538A1 (de) * 2019-08-09 2021-02-11 Liebherr-Components Deggendorf Gmbh Sitzplatte für einen Injektor und Verfahren zum Herstellen einer solchen Sitzplatte

Also Published As

Publication number Publication date
WO2021198024A1 (fr) 2021-10-07
US20230146257A1 (en) 2023-05-11
CN115349052A (zh) 2022-11-15
DE102020108668A1 (de) 2021-09-30
EP4090844A1 (fr) 2022-11-23

Similar Documents

Publication Publication Date Title
DE19531652A1 (de) Kraftstoffeinspritzventil für Brennkraftmaschinen
DE10034444A1 (de) Brennstoffeinspritzventil
EP2156046B1 (fr) Ajustement de trajet d'armature pour électrovanne
DE112011104463T5 (de) Solenoidaktuator und Kraftstoffinjektor mit demselben
DE102010030600A1 (de) Minimierung des Ankerschließprellens durch ein Verzögerungsglied im Restluftspalt
DE102009000183A1 (de) Brennstoffeinspritzventil
WO2005095789A1 (fr) Dispositif d'injection de carburant dans la chambre de combustion d'un moteur a combustion interne a capteur de levee d'aiguille
DE102012206586A1 (de) Verfahren zum Betreiben eines Kraftstoffinjektors
EP1607620B1 (fr) Injecteur de carburant avec manchon de serrage comme butée pour une aiguille
EP4090844B1 (fr) Commutateur de course d'aiguille et injecteur de carburant doté dudit commutateur de course d'aiguille
WO2021197947A1 (fr) Aiguille d'injection pour injecteur de carburant, et logement d'injecteur pour aiguille d'injection
EP2496824B1 (fr) Ensemble soupape de commande
WO2021028349A1 (fr) Plaque de siège d'injecteur et procédé de fabrication de plaque de siège de ce type
DE102007049945A1 (de) Brennstoffeinspritzventil
DE10063260A1 (de) Brennstoffeinspritzventil
WO2021233653A1 (fr) Injecteur de carburant
EP3559438B1 (fr) Injecteur de carburant et utilisation de celui-ci
DE102007040115A1 (de) Steuerventil für einen Kraftstoffinjektor
EP3111079A1 (fr) Injecteur de carburant
DE102018218705A1 (de) Ventil zum Zumessen eines Fluids, insbesondere Brennstoffeinspritzventil
DE102018101351A1 (de) Sitzplatte für einen Injektor und Verfahren zur Herstellung einer solchen Sitzplatte
DE102018202107A1 (de) Elektromagnetisch betätigbares Steuerventil für einen Kraftstoffinjektor und Kraftstoffinjektor
DE10134526B4 (de) Schaltventil für Kraftstoffeinspritzsystem
DE102009055045A1 (de) Einspritzventil
DE102021206186A1 (de) Gasdosierventil und Verfahren zur Herstellung eines solchen

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

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: 20220816

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

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
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: 20230920

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

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20240115

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: DE

Ref legal event code: R096

Ref document number: 502021002768

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

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

Ref country code: FR

Payment date: 20240321

Year of fee payment: 4

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: 20240221

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

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: 20240621

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

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: 20240221

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

Ref country code: DE

Payment date: 20240403

Year of fee payment: 4

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

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240522

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

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: 20240221

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: 20240521

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: 20240221

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

Ref country code: CH

Payment date: 20240401

Year of fee payment: 4

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

Ref country code: ES

Payment date: 20240401

Year of fee payment: 4

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: 20240521

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: 20240521

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: 20240221

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: 20240221

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: 20240621

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: 20240221

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: 20240522

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: 20240221

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240221

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

Ref country code: IT

Payment date: 20240401

Year of fee payment: 4

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

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240221

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: 20240621

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: 20240221

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: 20240621

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: 20240221

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: 20240221

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

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: 20240221

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: 20240221