EP3346122B1 - Soupape de commutation électromagnétique et pompe haute pression à carburant - Google Patents

Soupape de commutation électromagnétique et pompe haute pression à carburant Download PDF

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Publication number
EP3346122B1
EP3346122B1 EP17150745.2A EP17150745A EP3346122B1 EP 3346122 B1 EP3346122 B1 EP 3346122B1 EP 17150745 A EP17150745 A EP 17150745A EP 3346122 B1 EP3346122 B1 EP 3346122B1
Authority
EP
European Patent Office
Prior art keywords
pole piece
armature
disk
area
spring
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
EP17150745.2A
Other languages
German (de)
English (en)
Other versions
EP3346122A1 (fr
Inventor
Stephan BIAS
Jürgen Bohmann
Burhan Dagdelen
Andreas Mühlbauer
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.)
Vitesco Technologies GmbH
Original Assignee
Continental Automotive 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 Continental Automotive GmbH filed Critical Continental Automotive GmbH
Priority to EP17150745.2A priority Critical patent/EP3346122B1/fr
Publication of EP3346122A1 publication Critical patent/EP3346122A1/fr
Application granted granted Critical
Publication of EP3346122B1 publication Critical patent/EP3346122B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/46—Valves
    • F02M59/466—Electrically operated valves, e.g. using electromagnetic or piezoelectric 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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
    • F02M59/366—Valves being actuated electrically
    • 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
    • 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
    • F02M63/0021—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means characterised by the arrangement of mobile armatures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/088—Electromagnets; Actuators including electromagnets with armatures provided with means for absorbing shocks
    • 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
    • F02M2200/09—Fuel-injection apparatus having means for reducing noise
    • 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
    • F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
    • F02M2200/306—Fuel-injection apparatus having mechanical parts, the movement of which is damped using mechanical 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
    • F02M2200/90—Selection of particular materials
    • F02M2200/9015—Elastomeric or plastic 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/90—Selection of particular materials
    • F02M2200/9053—Metals
    • F02M2200/9061—Special treatments for modifying the properties of metals used for fuel injection apparatus, e.g. modifying mechanical or electromagnetic properties

Definitions

  • the invention relates to an electromagnetic switching valve for a fuel injection system of an internal combustion engine, as well as a high-pressure fuel pump having such an electromagnetic switching valve.
  • High-pressure fuel pumps in fuel injection systems in internal combustion engines are used to pressurize a high-pressure fuel, the pressure is for example in gasoline engines in the range of 150 bar to 400 bar and diesel engines in the range of 1500 bar to 2500 bar.
  • valve assemblies may be provided at various positions along the path that the fuel takes from a tank to the respective combustion chamber, for example as an intake valve on a high pressure fuel pump that pressurizes the fuel, but also as a relief valve at various positions of the fuel injection system, for example For example, on a common rail that stores the pressurized fuel before injection into the combustion chamber.
  • a spring holds a closing element of a valve region of such an electromagnetic switching valve open or closed against a volume flow or pressure.
  • the associated actuator area ie the magnetic actuator which opens or closes the closing element, is designed in such a way that that the spring can override the actuator force of the actuator in a certain time, thus switching the switching valve.
  • the moving parts of the electromagnetic switching valve have two boundaries in an axial direction of movement, i. an actuator force acting direction, are given. Due to the contact between the moving parts and these limitations, however, there is in each case a pulse, which is emitted via the components of the fuel injection system, for example the high-pressure fuel pump, as sound. The sound radiation is perceived as noise.
  • the object of the invention is to provide an electromagnetic switching valve, in which a sound radiation can be reduced to a minimum.
  • a high-pressure fuel pump having such an electromagnetic switching valve is the subject of the independent claim.
  • An electromagnetic switching valve for a fuel injection system of an internal combustion engine has a valve portion having a closing member and a valve seat for closing of the switching valve cooperate, on. Furthermore, the electromagnetic switching valve has a spring with a spring force acting on the closing element for biasing the closing element into an open or closed position, and an actuator area for moving the closing element with an actuator force opposite to the spring force.
  • the actuator region has an armature that is movable along an actuator force acting direction and that is coupled to the closing element for moving the closing element and a stationary pole piece.
  • a pole piece approaching surface of the pole piece is disposed toward the armature, and an armature approaching surface of the armature is disposed facing the pole piece so that the pole piece approximation surface and the anchor approaching surface directly face each other.
  • the pole piece has in the approach surface on a recess in which a plastic disc is fixed, which has a directed to the armature disc surface.
  • the pole piece approaching surface and the disk surface are offset from each other.
  • the spring is disposed between the armature and the pole piece and is supported with a spring end in the recess on the pole piece, wherein the plastic disc has a recess in which the spring is supported by the spring end, or the plastic disc has a through hole through which engages the spring with the spring end.
  • disc walls of the plastic disc, which form the recess or the through hole are arranged inclined obliquely outwardly away from the central longitudinal axis of the pole piece.
  • the movable armature moves toward the fixed pole piece along the actuator force acting direction because the armature is attracted by the pole piece. At some point, the armature engages the pole piece with the pole piece approach surface and the anchor approach surface touching. It is now proposed to insert in the pole piece an additional plastic disc, but not flush with the Pol Federationan conferencerungs phases concludes, but is arranged offset to her. Thereby, it is possible for the anchor approaching surface to strike the plastic disk without touching the pole piece approaching surface, so that the Plastic disc can decouple the components armature and pole piece metallic from each other. The momentum generated when the armature hits the pole piece is damped. By decoupling the metallic components from each other, the transmission to adjacent components is further reduced.
  • the staggered arrangement of pole piece approaching surface and disk surface also acts as a shock absorber so that upon impact of the armature in the pole piece, the pulse is first damped by the metallic armature striking the plastic disk.
  • the electromagnetic switching valve may be provided to a high-pressure fuel pump of the fuel injection system as an intake valve or as an exhaust valve, but it is also possible to provide the electromagnetic switching valve, for example, on a common rail for pressure control in the fuel injection system.
  • the electromagnetic switching valve can be designed as normally open or normally closed switching valve.
  • the spring is arranged between the armature and the pole piece and is supported by a spring end in the recess on the pole piece. It can be provided, for example, that the plastic disc has a recess in which the spring is supported by the spring end. Alternatively, however, it is also possible that the plastic disc has a through hole through which the spring engages with the spring end.
  • the spring is disposed between the armature and the pole piece to keep the armature in the de-energized state at a distance from the pole piece, wherein the spring force of the spring counteracts the Aktuatorkraft, and is suppressed in energized state, so that armature and pole piece toward each other move.
  • the spring at least at one of the two elements anchor or pole piece can support. It is advantageous if the area where the spring is supported, and should usually be provided as a guide for a spring end, at the same time takes on another function. This is the case when the recess serves both for accommodating or securing the plastic disk, as well as a guide region for the spring between the armature and pole piece.
  • the arrangement of the spring and the plastic disc together in the recess can be realized by a variety of embodiments. For example, it is possible to provide in the recess a shoulder on which the disc rests, whereby the disc has a smaller disc thickness than the recess is deep. However, it is also possible to form the disc thickness somewhat thicker than the recess is deep, so that the plastic disc is flush with a recess bottom, where the spring end of the spring is supported.
  • the disc walls of the plastic disc which form the recess or the through hole, are inclined obliquely outwardly away from the central longitudinal axis of the pole piece.
  • the plastic disk has a somewhat greater stability upon impact of the armature, since a base of the plastic disk, which lies opposite the point of impact, is somewhat wider than the region of the impact itself.
  • the plastic disc is fastened with a projection of the disc surface directed towards the armature to the pole piece approaching surface in the recess.
  • the plastic disc is secured in the recess with a disc surface recessed from the armature with respect to the pole piece approaching surface, the anchor at the anchor approaching surface in particular having a projection facing the pole piece which engages the recess as the armature and pole piece approach ,
  • the plastic disc can be fastened by injection of plastic cohesively in the recess on the pole piece, however, it is also possible to press an already finished plastic disc in the recess and thus to attach via a frictional connection or to fix positively over advantageous geometries.
  • the plastic disk has a disk thickness along the actuator force acting direction, wherein the disk surface is arranged offset in one embodiment by at least 10% of the disk thickness, in particular by at least 25% of the disk thickness, to the pole piece approaching surface. That is, with respect to its overall thickness, the plastic disk, when inserted with a projection in the recess, projects beyond the pole piece approaching surface by at least 10%, preferably at least 25%. Conversely, when the plastic disc is set back in the recess, the offset is at least 10% of the total disc thickness of the plastic disc, in particular at least 25% of the disc thickness.
  • the recess is advantageously arranged symmetrically directly around a central longitudinal axis of the pole piece arranged parallel to the actuator force acting direction, wherein in particular a cross-sectional area of the recess perpendicular to the actuator acting direction is at least 50%, in particular at least 65% of the cross-sectional area of the pole piece perpendicular to the actuator force acting direction.
  • the recess is applied in particular in the middle region of the pole piece, while the outer region is formed only by the pole piece approaching surface in order to weaken the magnetic field lines as little as possible.
  • the forces that occur through the impact of the anchor in the plastic disc thereby advantageously taken in the middle of the pole piece and discharged to the outside. As a result, the formation of noise can be advantageously counteracted.
  • the plastic disc is formed of an elastomeric material and therefore deforms under impact forces upon impact of the armature in the plastic disc.
  • the plastic disc on additional particles such as fibers or magnetic particles.
  • the fibers can advantageously also be magnetic. Magnetically, all materials are to be understood that can react to forces of a magnetic field.
  • a high-pressure fuel pump for a fuel injection system of an internal combustion engine advantageously has an electromagnetic switching valve described above.
  • Fig. 1 shows a schematic representation of a fuel injection system 10, with which an internal combustion engine fuel 12 is supplied from a tank 14 for combustion.
  • the fuel 12 is pumped from a backing pump 16 via a low pressure line 18 to a high-pressure fuel pump 20, where the fuel 12 is subjected to high pressure.
  • the pressurized fuel 12 is then conveyed to a so-called.
  • Common rail 22 and injected from there via injectors 24 into the combustion chambers of the internal combustion engine.
  • valves in particular electromagnetic switching valves 26, are provided to control the fuel flow through the fuel injection system 10.
  • the high-pressure fuel pump 20 may have an electromagnetic switching valve 26 as the inlet valve 28, but it is also possible for such a switching valve 26 to be provided as an outlet valve 30 on the high-pressure fuel pump 20.
  • an electromagnetic switching valve 26 is provided as a pressure reducing valve 32 on the common rail 22 in order to regulate the pressure in the common rail 22.
  • Fig. 2 shows a sectional view of such an electromagnetic switching valve 26th
  • the electromagnetic switching valve 26 has a valve region 34, which comprises a closing element 36 and a valve seat 38.
  • the closure member 36 cooperates with the valve seat 38 to close the switching valve 26.
  • the closing element 36 lifts off the valve seat 38, the switching valve 26 is in its open position.
  • the closing element 36 is formed as a plate 40, which rests flat on the valve seat plate 42 of the valve seat 38 in the closed position of the switching valve 26.
  • the closing element 36 in this case comprises a pin 44 which pushes the plate 40 away from the valve seat plate 42 and thus opens the switching valve 26.
  • the switching valve 26 further includes a spring 46 which in the present embodiment biases the closing member 36 with a spring force FF toward the open position and thus keeps the switching valve 26 in its open position.
  • the switching valve 26 further includes an actuator portion 48 which is formed as a magnetic actuator and the closing member 36 can move with an actuator force FA, which is opposite to the spring force FF.
  • the switching valve 26 has an armature 50, which is movable along an actuator force acting direction RA, and a fixed pole piece 52.
  • the actuator region 48 comprises a coil 54, by means of which a magnetic field can be established in the actuator region 48 when a voltage is applied from the outside. By this magnetic field, the armature 50 is attracted by the pole piece 52 and moves in the direction of the pole piece 52 along the Aktuatorkraftrial RA. As the armature 50 and the pin 44 are coupled together, the pin 44 is thus pulled away from the armature 50 by the closing element 36, so that the closing element 36 can rest against the valve seat plate 42 and thus comes into its closed position.
  • the armature 50 has an armature approaching surface 56 disposed facing the pole piece 52, and the pole piece 52 has a pole piece approaching surface 58 disposed facing the armature 50.
  • pole piece approach surface 58 and anchor approach surface 56 directly oppose each other.
  • anchor approach surface 56 and pole piece approach surface 58 move toward each other.
  • the pole piece 52 has in the pole piece approaching surface 58 a recess 60 in which a plastic disk 62 is attached. This has a disk surface 64 directed towards the armature 50.
  • the plastic disk 62 is secured in the recess 60 with a protrusion 66 of the disk surface 64 facing the armature 50 with respect to the pole piece approaching surface 58. That is, the pole piece approaching surface 58 and the disk surface 64 are offset from each other of the actuator force acting direction RA.
  • Fig. 3 shows a sectional view of a portion of the switching valve 26 in the region in which the armature 50 and pole piece 52 opposite, in a first embodiment.
  • the plastic disk 62 has a disk thickness DS along the actuator force acting direction RA, wherein the protrusion 66 is so large that the disk surface 64 is offset by about 25% of the disk thickness DS to the pole piece approaching surface 58.
  • the recess 60 has a shoulder 68 in which the plastic disk 62 is fastened.
  • the spring 46 of the switching valve 26 is also supported in the recess 60, to which the plastic disc 62 has a through hole 70 through which the spring 46 can reach through with a spring end 72, with which it is supported in the recess 60.
  • Disc walls 74 of the plastic disc 62, which form the through hole 70 are obliquely inclined away from a central longitudinal axis AM of the pole piece 52 so as to absorb forces acting upon impact of the armature 50 in the plastic disc 62, better within the plastic disc 62 and the Spring 46 can be mounted better.
  • Fig. 4 shows a sectional view of a second embodiment of the switching valve 26 in the region of armature 50 and pole piece 52.
  • the plastic disc 62 is not secured with a projection 66 in the recess 60, but is set back from the armature 50 with respect to the pole piece approaching surface 58.
  • the armature 50 has at its anchor approaching surface 56 a to the pole piece 52 facing projection 76.
  • This projection 76 engages in the approach of armature 50 and pole piece 52 in the recess 60 and strikes on the plastic disk 52.
  • the structure of the switching valve 26 and in particular the arrangement of spring 46 and plastic disc 62 substantially corresponds to the first embodiment in FIG Fig. 3 ,
  • Fig. 5 shows a third embodiment of a switching valve 26 in a sectional view in the region of armature 50 and pole piece 52.
  • the plastic disc 62 has a disc thickness DS, which is greater than the depth T of the recess 60 along the Aktuarorkraftwirkraum RA.
  • the plastic disk 62 is fixed to the same surface on which also the spring end 72 of the spring 46 is supported.
  • Fig. 6 shows a sectional view of a fourth embodiment not according to the invention, in which the plastic disc 62 has a recess 78 in which the spring 46 is supported. Therefore, the spring 46 does not penetrate the plastic disk 62 through a provided through hole 70, but the recess 60 is completely filled with the plastic disk 62nd
  • the recess 60 is arranged symmetrically immediately about the central longitudinal axis AM, which extends parallel to the Aktuarorkraftwirkraum RA.
  • a cross-sectional area FQ of the recess 60 and thus also a cross-sectional area FQ of the plastic disc 62 is at least 50% of the cross-sectional area of the pole piece 52 perpendicular to the Aktuatorkraftwirkraum RA.
  • the means that the plastic disc 62 is disposed in the center of the pole piece 52, and so forces acting on the impact of the armature 50 in the pole piece 52 and the plastic disc 62 can be discharged from the center to the outside.
  • the plastic disk 62 may be formed, for example, of an elastomer.
  • additional particles may be provided in the plastic disk, which are magnetic, such as magnetic particles or magnetic fibers.
  • 62 fibers may be provided to support the power dissipation in the plastic disc, which are arranged in the direction of force flow and thus facilitate the dissipation of impact forces.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Magnetically Actuated Valves (AREA)

Claims (11)

  1. Soupape de commande électromagnétique (26) pour un système d'injection de carburant (10) d'un moteur à combustion interne, présentant :
    - une zone de soupape (34) avec un élément de fermeture (36) et avec un siège de soupape (38), lesquels interagissent pour fermer la soupape de commande (26) ;
    - un ressort (46) avec une force de ressort (FF) agissant sur l'élément de fermeture (36) pour la précontrainte de l'élément de fermeture (36) dans une position d'ouverture ou de fermeture ;
    - une zone d'actionneur (48) pour le déplacement de l'élément de fermeture (36) avec une force d'actionneur (FA) opposée à la force de ressort (FF) ;
    la zone d'actionneur (48) présentant une ancre (50) mobile le long de la direction d'action de la force d'actionneur (RA), laquelle ancre est accouplée à l'élément de fermeture (36) pour le déplacement de l'élément de fermeture (36), et une pièce polaire fixe (52), une surface de rapprochement de pièce polaire (58) de la pièce polaire (52) étant disposée face à l'ancre (50), et une surface de rapprochement d'ancre (56) de l'ancre (50) étant disposée face à la pièce polaire (52), de telle sorte que la surface de rapprochement de pièce polaire (58) et la surface de rapprochement d'ancre (56) sont directement opposées l'une à l'autre,
    la pièce polaire (50) présentant un évidement (60) dans la surface de rapprochement de pièce polaire (58), dans lequel une rondelle en plastique (62) est fixée, laquelle présente une surface de rondelle (64) orientée vers l'ancre (50),
    la surface de rapprochement de pièce polaire (58) et la surface de rondelle (64) étant disposées de façon décalée l'une par rapport à l'autre,
    caractérisée en ce que
    le ressort (46) est disposé entre l'ancre (50) et la pièce polaire (52) et s'appuie sur la pièce polaire (52) avec une extrémité de ressort (72) dans l'évidement (60),
    la rondelle en plastique (62) présentant un renfoncement (78) dans lequel le ressort (46) s'appuie avec l'extrémité de ressort (72), ou la rondelle en plastique (62) présentant un trou traversant (70) par lequel le ressort (46) passe avec l'extrémité de ressort (72), et
    des parois de rondelle (74) de la rondelle en plastique (62) formant le renfoncement (78) ou le trou traversant (70) étant disposées avec une inclinaison oblique vers l'extérieur de l'axe longitudinal central (AM) de la pièce polaire (52).
  2. Soupape de commande électromagnétique (26) selon la revendication 1, caractérisée en ce que la rondelle en plastique (62) est fixée dans l'évidement (60) avec une projection (66) de la surface de rondelle (64) orientée vers l'ancre (50), par rapport à la surface de rapprochement de pièce polaire (52).
  3. Soupape de commande électromagnétique (26) selon la revendication 1, caractérisée en ce que la rondelle en plastique (62) est fixée dans l'évidement (50) avec une surface de rondelle (64) en retrait par rapport à l'ancre (50), relativement à la surface de rapprochement de pièce polaire (58), l'ancre (50) présentant en particulier une saillie (76) faisant face à la pièce polaire (52), sur la surface de rapprochement d'ancre (56), laquelle saillie pénètre dans l'évidement (60) lors du rapprochement de l'ancre (50) et de la pièce polaire (52).
  4. Soupape de commande électromagnétique (26) selon l'une des revendications 1 à 3,
    caractérisée en ce que la rondelle en plastique (62) présente une épaisseur de rondelle (DS) le long de la direction d'action de la force d'actionneur (RA), la surface de rondelle (64) étant disposée de façon décalée d'au moins 10 % de l'épaisseur de rondelle (DS), en particulier d'au moins 25 % de l'épaisseur de rondelle (DS), par rapport à la surface de rapprochement de pièce polaire (58).
  5. Soupape de commande électromagnétique (26) selon l'une des revendications 1 à 4,
    caractérisée en ce que l'évidement (60) est disposé dans la pièce polaire (52) directement de façon symétrique sur un axe longitudinal central (AM) de la pièce polaire (52) disposé parallèlement à la direction d'action de la force d'actionneur (RA), une surface d'aire de section (FQ) de l'évidement (60),
    verticalement par rapport à la direction d'action de la force d'actionneur (RA), étant d'au moins 50 % de la surface d'aire de section de la pièce polaire (52), verticalement par rapport à la direction d'action de la force d'actionneur (RA).
  6. Soupape de commande électromagnétique (26) selon la revendication 5, une surface d'aire de section (FQ) de l'évidement (60), verticalement par rapport à la direction d'action de la force d'actionneur (RA), s'élevant à au moins 65 % de la surface d'aire de section de la pièce polaire (52), verticalement par rapport à la direction d'action de la force d'actionneur (RA).
  7. Soupape de commande électromagnétique (26) selon l'une des revendications 1 à 6,
    caractérisée en ce que la rondelle en plastique (62) est formée dans un matériau élastomère.
  8. Soupape de commande électromagnétique (26) selon l'une des revendications 1 à 7,
    caractérisée en ce que la rondelle en plastique (62) présente des particules additionnelles.
  9. Soupape de commande électromagnétique (26) selon la revendication 8,
    caractérisée en ce que les particules additionnelles comprennent des fibres.
  10. Soupape de commande électromagnétique (26) selon la revendication 8 ou 9,
    caractérisée en ce que les particules additionnelles comprennent des particules magnétiques.
  11. Pompe haute pression à carburant (20) pour un système d'injection de carburant (10) d'un moteur à combustion interne, présentant une soupape de commande électromagnétique (26) selon l'une des revendications 1 à 10.
EP17150745.2A 2017-01-10 2017-01-10 Soupape de commutation électromagnétique et pompe haute pression à carburant Active EP3346122B1 (fr)

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EP3346122B1 true EP3346122B1 (fr) 2019-07-17

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CN115735055A (zh) * 2020-06-24 2023-03-03 贺尔碧格维恩有限公司 电磁阀

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Publication number Priority date Publication date Assignee Title
DE10017030B4 (de) * 2000-03-31 2005-05-19 Rausch & Pausch Gmbh Magnetventil
DE10124747A1 (de) * 2001-05-21 2002-11-28 Bosch Gmbh Robert Brennstoffeinspritzventil
MY138028A (en) * 2004-02-27 2009-04-30 Keihin Corp Electromagnetic fuel injection valve
DE102013218854A1 (de) * 2013-09-19 2015-03-19 Robert Bosch Gmbh Elektromagnetisch ansteuerbares Saugventil

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