EP4088017A1 - Electromagnetic actuator - Google Patents

Electromagnetic actuator

Info

Publication number
EP4088017A1
EP4088017A1 EP20823858.4A EP20823858A EP4088017A1 EP 4088017 A1 EP4088017 A1 EP 4088017A1 EP 20823858 A EP20823858 A EP 20823858A EP 4088017 A1 EP4088017 A1 EP 4088017A1
Authority
EP
European Patent Office
Prior art keywords
heat
coil
actuator
elastic member
control rod
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.)
Pending
Application number
EP20823858.4A
Other languages
German (de)
French (fr)
Inventor
Christophe Tapin
Romain Vit
Thierry Thibault
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.)
Delphi Technologies IP Ltd
Original Assignee
Delphi Technologies IP Ltd
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 Delphi Technologies IP Ltd filed Critical Delphi Technologies IP Ltd
Publication of EP4088017A1 publication Critical patent/EP4088017A1/en
Pending legal-status Critical Current

Links

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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • F02M63/0017—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means
    • 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
    • F02M2200/26—Fuel-injection apparatus with elastically deformable elements other than coil springs
    • 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
    • F02M2200/50—Arrangements of springs for valves used in fuel injectors or fuel injection pumps

Definitions

  • the present invention relates to an electromagnetic actuator for a fuel injector used in vehicle engines.
  • Fuel injection systems for modern internal combustion engines, particularly compression ignition engines, include a plurality of fuel injectors arranged to emit an atomized jet of high pressure fuel. in a combustion chamber of the engine.
  • a fuel injector known for use in such a system It includes an injection needle. The needle slides within the bore formed in a nozzle body and can cooperate with a seat to control the delivery of fuel through one or more outlet openings. The movement of the needle is controlled using a high pressure control chamber and a low pressure chamber that communicates with the low pressure drain tank.
  • an actuator is electrically supplied to effect the opening, which causes the displacement of an armature and a valve element, also called a valve stem by professionals, in contact with it.
  • control valve identified as a control valve.
  • the control valve is located in the low pressure chamber, the control valve then moves upward against the action of an actuator coil spring.
  • the length of the spring is reduced and an oscillation propagates from turn to turn to then propagate on the control valve and the oscillation thus goes back and forth creating disturbances in the flow of fuel.
  • the propagation of the oscillation disrupts the movement of the reinforcement integral with the valve. This generates high frequencies which disturbs the multiple injections. Oscillations occur in the forces applied to close or open the control valve. This problem is explained by a disturbed movement of the armature caused by oscillations undergone by the spring. This problem will be solved by the present invention, which will be described later.
  • the present invention aims to solve the problem of displacement of the armature caused by the oscillations undergone by the spring.
  • the invention consists of an electromagnetic actuator of a diesel fuel injector.
  • the actuator comprises a fixed electric coil provided with an axial blind hole, an elastic device compressed between a pin and a control rod moving towards the coil when the latter is electrically supplied.
  • the resilient device permanently pushes a valve assembly including the control rod attached to a magnetic frame to a position remote from the coil.
  • the valve assembly includes the elastic device arranged in a blind hole.
  • the elastic device comprises an elastic member and a heat-shrinkable element encapsulating the elastic member.
  • the heat-shrinkable element is further heat-shrunk around the elastic member.
  • the heat-shrinkable element has a wall of substantially constant thickness.
  • the elastic member is a compression coil spring.
  • a diesel fuel injector comprises an electromagnetic actuator as described above.
  • FIG 1 is an axial section of the electromagnetic actuator according to the invention comprising an encapsulated spring.
  • FIG 2 is a sectional view of the invention comprising a heat shrinkable member, a spring and an elastic member.
  • top-to-bottom orientation is arbitrarily chosen and, words and phrases such as "above, below, above, below " may be used without any intention of limit the invention.
  • FIG. 1 is shown a part of the injector 10 of diesel fuel according to the invention.
  • the injector 10 includes a needle 12 sliding in a bore 14.
  • the injector 10 extends along a longitudinal axis X.
  • the movement of the needle 12 is controlled using two chambers, a high pressure control chamber 16 and a low pressure chamber 18, which communicates with the low pressure drain tank.
  • an actuator 20 comprising a coil 22 and which is electrically supplied during the opening step, engages a movable magnetic armature 24 moving towards the coil 22 and a valve element 26 in contact and fixed to it. Armature 24.
  • the valve member 26 is also referred to as the control rod 26.
  • the control rod 26 and the armature 24 attached together constitute a valve assembly 28.
  • the valve assembly 28 located in the chamber. low pressure 18, moves upward against the action of an elastic device 30 of the actuator 20, thus the valve assembly 28 moves away from its seat.
  • the fuel can escape from the control chamber 16 to the low pressure chamber 18 which is at a low pressure of the order of 5 bar with peaks of up to 25 bar through a return passage (not shown). .
  • the electromagnetic actuator 20 of the diesel fuel injector 10 comprises a calibration pin 32 and the elastic device 30 compressed between the pin 32 and the control rod 26.
  • the elastic device 30 pushes back. permanently the valve assembly 28 to a position remote from the coil 22.
  • the resilient device 30 is arranged in an axial blind hole 34.
  • the elastic device 30 comprises an elastic member 36 and a heat-retractable element 38 encapsulating the elastic member 36.
  • the elastic device 30 is compressed between the pin 32 arranged in the bottom of the blind hole 34 and the control rod 26.
  • the heat element retractable 38 is heat-shrunk around the elastic member 36.
  • the heat-shrinkable element 38 has a wall of substantially constant thickness with a value of 0.05 mm after shrinking.
  • the resilient member 36 is a coil spring 36 of compression.
  • the elastic member 36 is arranged in the axial blind hole 34.
  • the axial helical spring 36 extends along the longitudinal axis X.
  • the helical spring 36 extends between a first coil 40 in contact with the magnetic armature 22 and a last coil 42 in contact with the pin 32.

Abstract

The invention relates to an electromagnetic actuator (20) of a diesel fuel injector (10), the actuator (20) comprising: - a fixed electrical coil (22) provided with an axial blind hole (34), - a resilient device (30) compressed between a pin (32) and a control rod (26) moving towards the coil (22) when the latter is electrically energised, the resilient device (30) permanently urging a valve assembly (28) comprising the control rod (26) attached to a magnetic armature (24) towards a position remote from the coil (22), the valve assembly (28) comprising the resilient device (30) being arranged in a blind hole (34), characterised in that the resilient device (30) comprises a resilient member (36) and a heat-shrinkable element (38) encapsulating the resilient member (36).

Description

Actionneur électromagnétique Electromagnetic actuator
DOMAINE TECHNIQUE La présente invention concerne un actionneur électromagnétique pour un injecteur de carburant utilisé dans les moteurs de véhicule. TECHNICAL FIELD The present invention relates to an electromagnetic actuator for a fuel injector used in vehicle engines.
ARRIERE-PLAN TECHNOLOGIQUE DE L’INVENTION Des systèmes d'injection de carburant pour moteurs à combustion interne moderne, en particulier les moteurs à allumage par compression, comprennent une pluralité d'injecteurs de carburant agencés pour émettre un jet atomisé de carburant à haute pression dans une chambre de combustion du moteur. Un injecteur de carburant connu pour être utilisé dans un tel système. Il comprend une aiguille d'injection. L'aiguille est glissante à l'intérieur de l’alésage formé dans un corps de buse et pouvant coopérer avec un siège pour commander la distribution de carburant à travers une ou plusieurs ouvertures de sortie. Le mouvement de l'aiguille est contrôlé à l'aide d’une chambre de commande à haute pression et d’une chambre à basse pression qui communique avec le réservoir de vidange à basse pression. Lorsqu’au début de l’injection, un actionneur est alimenté électriquement pour réaliser l’ouverture, ce qui entraîne le déplacement d’une armature et un élément de soupape, également appelé tige de vanne par les professionnels, en contact avec celui-ci, identifié comme une soupape de commande. La soupape de commande est située dans la chambre à basse pression, la soupape de commande se déplace alors vers le haut contre l'action d'un ressort de bobine de l'actionneur. A ce stade, la longueur du ressort est réduite et une oscillation se propage de spire en spire pour ensuite se propager sur la soupape de commande et l’oscillation fait ainsi des allers retours créant des perturbations du flux de carburant. La propagation de l’oscillation vient perturber le déplacement de l'armature solidaire de l'organe de soupape. Cela engendre des hautes fréquences qui perturbe les multiples injections. Il se produit alors des oscillations sur les forces appliquées pour fermer ou ouvrir la soupape de commande. Ce problème s’explique par un déplacement perturbé de l’armature causé par des oscillations subies par le ressort. Ce problème sera résolu par la présente invention, qui va être décrite plus loin. BACKGROUND OF THE INVENTION Fuel injection systems for modern internal combustion engines, particularly compression ignition engines, include a plurality of fuel injectors arranged to emit an atomized jet of high pressure fuel. in a combustion chamber of the engine. A fuel injector known for use in such a system. It includes an injection needle. The needle slides within the bore formed in a nozzle body and can cooperate with a seat to control the delivery of fuel through one or more outlet openings. The movement of the needle is controlled using a high pressure control chamber and a low pressure chamber that communicates with the low pressure drain tank. When, at the start of injection, an actuator is electrically supplied to effect the opening, which causes the displacement of an armature and a valve element, also called a valve stem by professionals, in contact with it. , identified as a control valve. The control valve is located in the low pressure chamber, the control valve then moves upward against the action of an actuator coil spring. At this stage, the length of the spring is reduced and an oscillation propagates from turn to turn to then propagate on the control valve and the oscillation thus goes back and forth creating disturbances in the flow of fuel. The propagation of the oscillation disrupts the movement of the reinforcement integral with the valve. This generates high frequencies which disturbs the multiple injections. Oscillations occur in the forces applied to close or open the control valve. This problem is explained by a disturbed movement of the armature caused by oscillations undergone by the spring. This problem will be solved by the present invention, which will be described later.
RESUME DE L’INVENTION SUMMARY OF THE INVENTION
La présente invention vise à résoudre le problème de déplacement de l’armature causé par les oscillations subies par le ressort. L’invention consiste en un actionneur électromagnétique d’un injecteur de carburant diesel. L’actionneur comprend une bobine électrique fixe pourvue d’un trou borgne axial, un dispositif élastique comprimé entre un pion et une tige de commande se déplaçant vers la bobine lorsque celle-ci est électriquement alimentée. Le dispositif élastique repousse en permanence un ensemble de soupape comprenant la tige de commande fixée à une armature magnétique vers une position éloignée de la bobine. L’ensemble de soupape comprend le dispositif élastique agencé dans un trou borgne. De plus le dispositif élastique comprend un membre élastique et un élément thermo rétractable encapsulant le membre élastique. L’élément thermo rétractable est de plus thermo rétracté autour du membre élastique. En outre l’élément thermo-rétractable a une paroi d'épaisseur sensiblement constante. Le membre élastique est un ressort héliocoïdale de compression. De plus un injecteur de carburant diesel comprend un actionneur électromagnétique tel que décrit ci-dessus. The present invention aims to solve the problem of displacement of the armature caused by the oscillations undergone by the spring. The invention consists of an electromagnetic actuator of a diesel fuel injector. The actuator comprises a fixed electric coil provided with an axial blind hole, an elastic device compressed between a pin and a control rod moving towards the coil when the latter is electrically supplied. The resilient device permanently pushes a valve assembly including the control rod attached to a magnetic frame to a position remote from the coil. The valve assembly includes the elastic device arranged in a blind hole. In addition, the elastic device comprises an elastic member and a heat-shrinkable element encapsulating the elastic member. The heat-shrinkable element is further heat-shrunk around the elastic member. In addition, the heat-shrinkable element has a wall of substantially constant thickness. The elastic member is a compression coil spring. In addition, a diesel fuel injector comprises an electromagnetic actuator as described above.
BREVE DESCRIPTION DES DESSINS BRIEF DESCRIPTION OF THE DRAWINGS
D’autres caractéristiques, buts et avantages de l’invention apparaîtront à la lecture de la description détaillée qui va suivre, et en regard des dessins annexés, donnés à titre d’exemple non limitatif :Other characteristics, aims and advantages of the invention will become apparent on reading the detailed description which follows, and with reference to the accompanying drawings, given by way of non-limiting example:
[Fig 1] est une coupe axiale de l’actionneur électromagnétique selon l’invention comprenant un ressort encapsulé. [Fig 2] est une coupe de l’invention comprenant un élément thermo rétractable, un ressort et un membre élastique. [Fig 1] is an axial section of the electromagnetic actuator according to the invention comprising an encapsulated spring. [Fig 2] is a sectional view of the invention comprising a heat shrinkable member, a spring and an elastic member.
DESCRIPTION DES MODES DE REALISATION PREFERES DESCRIPTION OF THE PREFERRED EMBODIMENTS
Pour faciliter et clarifier la description qui suit, l'orientation de haut en bas est choisi arbitrairement et, les mots et expressions tels que " ci-dessus, ci-dessous, dessus, dessous ..." peuvent être utilisé sans aucune intention de limiter l'invention. To facilitate and clarify the following description, the top-to-bottom orientation is arbitrarily chosen and, words and phrases such as "above, below, above, below ..." may be used without any intention of limit the invention.
Conformément à la figure 1 est représenté une partie de l’injecteur 10 de carburant diesel selon l’invention. L’injecteur 10 comprend une aiguille 12 coulissante dans un alésage 14. L’injecteur 10 s’étend le long d’un axe longitudinal X. According to Figure 1 is shown a part of the injector 10 of diesel fuel according to the invention. The injector 10 includes a needle 12 sliding in a bore 14. The injector 10 extends along a longitudinal axis X.
Le mouvement de l'aiguille 12 est contrôlé à l'aide de deux chambres, une chambre de commande 16 à haute pression et une chambre à basse pression 18, qui communique avec le réservoir de vidange à basse pression. Lorsque débute l'injection, un actionneur20 comprenant une bobine 22 et qui est alimenté électriquement lors de l’étape d'ouverture, engage une armature 24 magnétique mobile se déplaçant vers la bobine 22 et un élément de soupape 26 en contact et fixé à l’armature 24. L’élément de soupape 26 est appelé aussi la tige de commande 26. La tige de commande 26 et l’armature 24 fixés ensemble constitue un ensemble de soupape 28. L’ensemble de soupape 28, situé dans la chambre à basse pression 18, se déplace vers le haut contre l'action d'un dispositif élastique 30 de l'actionneur 20, ainsi l’ensemble de soupape 28 s’éloigne loin de son siège. En conséquence, le carburant peut s'échapper de la chambre de commande 16 vers la chambre basse pression 18 qui est à une basse pression de l’ordre de 5 bars avec des pointes pouvant atteindre 25 bars par un passage de retour (non représenté). The movement of the needle 12 is controlled using two chambers, a high pressure control chamber 16 and a low pressure chamber 18, which communicates with the low pressure drain tank. When the injection begins, an actuator 20 comprising a coil 22 and which is electrically supplied during the opening step, engages a movable magnetic armature 24 moving towards the coil 22 and a valve element 26 in contact and fixed to it. Armature 24. The valve member 26 is also referred to as the control rod 26. The control rod 26 and the armature 24 attached together constitute a valve assembly 28. The valve assembly 28, located in the chamber. low pressure 18, moves upward against the action of an elastic device 30 of the actuator 20, thus the valve assembly 28 moves away from its seat. As a result, the fuel can escape from the control chamber 16 to the low pressure chamber 18 which is at a low pressure of the order of 5 bar with peaks of up to 25 bar through a return passage (not shown). .
Comme représenté dans la figure 1 , l’actionneur 20 électromagnétique de l’injecteur 10 de carburant diesel comprend un pion 32 de tarage et le dispositif élastique 30 comprimé entre le pion 32 et la tige de commande 26. Le dispositif élastique 30 repousse en permanence l’ensemble de soupape 28 vers une position éloignée de la bobine 22. Le dispositif élastique 30 est agencé dans un trou borgne 34 axial. Le dispositif élastique 30 comprend un membre élastique 36 et un élément thermo rétractable 38 encapsulant le membre élastique 36. Le dispositif élastique 30 est comprimé entre le pion 32 agencé dans le fond du trou borgne 34 et la tige de commande 26. L’élément thermo rétractable 38 est thermo rétracté autour du membre élastique 36. L’élément thermo-rétractable 38 a une paroi d'épaisseur sensiblement constante d’une valeur de 0,05 mm après rétreint. Comme représenté dans la figure 1 et la figure 2, le membre élastique 36 est un ressort 36 hélicoïdal de compression. Le membre élastique 36 est agencé dans le trou borgne 34 axial. Le ressort 36 hélicoïdal axial s’étend selon l’axe longitudinal X. Le ressort 36 hélicoïdal s’étend entre une première spire 40 en contact avec l’armature 22 magnétique et une dernière spire 42 en contact avec le pion 32. As shown in Figure 1, the electromagnetic actuator 20 of the diesel fuel injector 10 comprises a calibration pin 32 and the elastic device 30 compressed between the pin 32 and the control rod 26. The elastic device 30 pushes back. permanently the valve assembly 28 to a position remote from the coil 22. The resilient device 30 is arranged in an axial blind hole 34. The elastic device 30 comprises an elastic member 36 and a heat-retractable element 38 encapsulating the elastic member 36. The elastic device 30 is compressed between the pin 32 arranged in the bottom of the blind hole 34 and the control rod 26. The heat element retractable 38 is heat-shrunk around the elastic member 36. The heat-shrinkable element 38 has a wall of substantially constant thickness with a value of 0.05 mm after shrinking. As shown in Figure 1 and Figure 2, the resilient member 36 is a coil spring 36 of compression. The elastic member 36 is arranged in the axial blind hole 34. The axial helical spring 36 extends along the longitudinal axis X. The helical spring 36 extends between a first coil 40 in contact with the magnetic armature 22 and a last coil 42 in contact with the pin 32.
Nous allons décrire la méthode de réalisation de l’invention dans ce qui suit: We will describe the method of making the invention in the following:
- pourvoir le membre élastique 36 et l’élément thermo rétractable 38, - provide the elastic member 36 and the heat-shrinkable element 38,
- encapsuler le membre élastique 36 par l’élément thermo rétractable 38, - encapsulate the elastic member 36 with the heat-shrinkable element 38,
- faire glisser l’élément thermo rétractable 38 sur le membre élastique 36 et positionnez-la au centre du membre élastique 36, - slide the heat-shrinkable element 38 on the elastic member 36 and position it in the center of the elastic member 36,
- chauffer l’élément thermo rétractable 38, à l’aide d’un générateur d'air chaud. - heat the heat-shrinkable element 38, using a hot air generator.
LISTE DES REFERENCES UTILISEES LIST OF REFERENCES USED
10 injecteur 12 aiguille 14 alésage 10 injector 12 needle 14 bore
16 chambre de commande 18 chambre basse pression 20 actionneur 16 control chamber 18 low pressure chamber 20 actuator
22 bobine 22 coil
24 armature 24 frame
26 tige de commande 26 control rod
28 ensemble de soupape28 valve assembly
30 dispositif élastique 30 elastic device
32 pion 32 pawn
34 trou borgne 34 blind hole
36 membre élastique 36 elastic member
38 élément thermo rétractable38 heat-shrinkable element
40 première spire 40 first turn
42 dernière spire 42 last turn
X axe longitudinal X longitudinal axis

Claims

REVENDICATIONS: CLAIMS:
1. Actionneur (20) électromagnétique d’un injecteur (10) de carburant diesel, l’actionneur (20) comprenant : 1. Electromagnetic actuator (20) of a diesel fuel injector (10), the actuator (20) comprising:
- une bobine (22) électrique fixe pourvue d’un trou borgne (34) axial, - a fixed electrical coil (22) provided with an axial blind hole (34),
- un dispositif élastique (30) comprimé entre un pion (32) et une tige de commande (26) se déplaçant vers la bobine (22) lorsque celle-ci est électriquement alimentée, le dispositif élastique (30) repoussant en permanence un ensemble de soupape (28) comprenant la tige de commande (26) fixée à une armature (24) magnétique vers une position éloignée de la bobine (22), l’ensemble de soupape (28) comprenant le dispositif élastique (30) agencé dans un trou borgne (34), caractérisé en ce le dispositif élastique (30) comprend un membre élastique (36) et un élément thermo rétractable (38) encapsulant le membre élastique (36). - an elastic device (30) compressed between a pin (32) and a control rod (26) moving towards the coil (22) when the latter is electrically supplied, the elastic device (30) constantly pushing back a set of valve (28) comprising the control rod (26) attached to a magnetic frame (24) to a position remote from the coil (22), the valve assembly (28) comprising the resilient device (30) arranged in a hole blind (34), characterized in that the elastic device (30) comprises an elastic member (36) and a heat-shrinkable element (38) encapsulating the elastic member (36).
2. Actionneur (20) selon la revendication précédente, dans lequel l’élément thermo-rétractable (38) est thermo rétracté autour du membre élastique (36), l’élément thermo-rétractable (38) ayant une paroi d'épaisseur sensiblement constante. 2. Actuator (20) according to the preceding claim, wherein the heat-shrinkable element (38) is heat-shrunk around the elastic member (36), the heat-shrinkable element (38) having a wall of substantially constant thickness. .
3. Actionneur (20) selon l’une quelconque des revendications 1 à 2, dans lequel le membre élastique (36) est un ressort héliocoïdale de compression. 3. Actuator (20) according to any one of claims 1 to 2, wherein the elastic member (36) is a compression coil spring.
4. Injecteur (10) de carburant diesel comprenant un actionneur (20) électromagnétique selon l’une quelconque des revendications précédentes. 4. Diesel fuel injector (10) comprising an electromagnetic actuator (20) according to any preceding claim.
EP20823858.4A 2020-01-09 2020-12-16 Electromagnetic actuator Pending EP4088017A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2000185A FR3106161B1 (en) 2020-01-09 2020-01-09 Electromagnetic actuator
PCT/EP2020/086458 WO2021139983A1 (en) 2020-01-09 2020-12-16 Electromagnetic actuator

Publications (1)

Publication Number Publication Date
EP4088017A1 true EP4088017A1 (en) 2022-11-16

Family

ID=70008866

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20823858.4A Pending EP4088017A1 (en) 2020-01-09 2020-12-16 Electromagnetic actuator

Country Status (3)

Country Link
EP (1) EP4088017A1 (en)
FR (1) FR3106161B1 (en)
WO (1) WO2021139983A1 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3024499B1 (en) * 2014-07-31 2019-05-03 Delphi Technologies Ip Limited DOUBLE SPRING ACTUATOR
FR3055370B1 (en) * 2016-09-01 2020-05-01 Delphi Technologies Ip Limited COIL ASSEMBLY

Also Published As

Publication number Publication date
FR3106161B1 (en) 2021-12-03
FR3106161A1 (en) 2021-07-16
WO2021139983A1 (en) 2021-07-15

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