EP1618298B1 - Soupape d'injection de carburant pour moteurs a combustion interne - Google Patents

Soupape d'injection de carburant pour moteurs a combustion interne Download PDF

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Publication number
EP1618298B1
EP1618298B1 EP04707203A EP04707203A EP1618298B1 EP 1618298 B1 EP1618298 B1 EP 1618298B1 EP 04707203 A EP04707203 A EP 04707203A EP 04707203 A EP04707203 A EP 04707203A EP 1618298 B1 EP1618298 B1 EP 1618298B1
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EP
European Patent Office
Prior art keywords
arrangement
fuel injection
injection valve
fuel
magnet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
EP04707203A
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German (de)
English (en)
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EP1618298A1 (fr
Inventor
Andreas GRÜNDL
Bernhard Hoffmann
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Compact Dynamics GmbH
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Compact Dynamics GmbH
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Publication of EP1618298A1 publication Critical patent/EP1618298A1/fr
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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
    • 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
    • F02M51/0614—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of electromagnets or fixed armature
    • F02M51/0617—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of electromagnets or fixed armature having two or more electromagnets
    • F02M51/0621—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of electromagnets or fixed armature having two or more electromagnets acting on one mobile armature
    • 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
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
    • F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
    • F02M45/08—Injectors peculiar 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
    • 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
    • F02M51/0635—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding
    • F02M51/0642—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature having a valve attached thereto
    • F02M51/0653—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature having a valve attached thereto the valve being an elongated body, e.g. a needle valve
    • 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
    • H01F7/16—Rectilinearly-movable armatures
    • H01F2007/1676—Means for avoiding or reducing eddy currents in the magnetic circuit, e.g. radial slots

Definitions

  • the invention relates to a fuel injection valve for fuel injection systems of internal combustion engines, in particular for the direct injection of fuel into a combustion chamber of an internal combustion engine.
  • a fuel injection valve for fuel injection systems of internal combustion engines in particular for the direct injection of fuel into a combustion chamber of an internal combustion engine.
  • the fuel injector of the present invention has a fuel inlet adapted to allow fuel to flow into the fuel injector and an electrically controllable actuator cooperating with a valve assembly to direct fuel in a directly or indirectly controlled manner through a fuel outlet to flow into the combustion chamber.
  • the electromagnetic actuator to be energized solenoid coil assembly, cooperating with this substantially soft magnetic magnetic yoke assembly, and cooperating with this substantially soft magnetic magnetic armature arrangement.
  • a fuel injection valve of the above type is known in a variety of designs from several manufacturers (Robert Bosch, Siemens VDO Automotive).
  • these known arrangements have the disadvantage that the number of strokes per working cycle of the internal combustion engine is very limited. In particular, it is so it is not possible to provide the required number of high-speed internal combustion engines required for efficient engine management multiple injections per stroke.
  • the precise variation of the stroke of the valve needle is only very limited possible in these arrangements.
  • the conventional electromagnetic actuators have proven to be a limiting factor for the further development of efficient fuel injectors.
  • an electromagnetic injection valve for controlling an amount of fuel to be fed into an internal combustion engine with an actuatable by an electromagnetic coil system valve body, wherein the valve body cooperates with a magnet armature of the electromagnetic coil system.
  • the electromagnetic coil system has at least two symmetrical to the central longitudinal axis and concentrically arranged coils with identical characteristics that are integrated into a magnetic circuit such that between two adjacent coils each have a first pole body is disposed, and the inner and outer Coil is adjacent to a second polar body.
  • the pole bodies are dimensioned such that a radial sectional area of a middle first pole body corresponds to the sum of the sectional areas of the adjacent second pole bodies.
  • the function depends significantly on the symmetry of the spatial design of the electromagnetic coil system.
  • the time delay of the electrical and magnetic field structure depends primarily on the geometry of the magnetic circuit and in particular on the field diffusion and the eddy currents occurring.
  • the US 5,035,360 shows a fuel injection valve for fuel injection systems of internal combustion engines for direct injection of fuel into a combustion chamber of an internal combustion engine.
  • the fuel injector has a fuel inlet and an electrically controllable actuator that cooperates with a valve assembly to exhaust fuel through a fuel outlet into the combustion chamber.
  • the actuating device has a magnetic coil arrangement to be energized, a soft-magnetic magnet yoke arrangement cooperating therewith and a soft-magnetic magnet armature arrangement cooperating therewith.
  • the magnet yoke arrangement has a plurality of pole webs, which are surrounded by solenoid coil assemblies which are adapted to pass on opposite flanks of the pole webs in each case oppositely directed electrical current.
  • the invention solves this problem in a valve arrangement of the above type by the features of claim 1.
  • the fuel injector not only necessary for gasoline engines opening / closing forces, but even required for a diesel direct injection opening / closing forces can provide with significantly more strokes per stroke (at least about twice as many as a Piezo Linear.Aktor today's design) with an electromagnetic actuator.
  • the valve assembly according to the invention allows the realization of opening / closing cycles with about 40 - 50 microseconds and less. This enables multiple injection processes for efficient engine management both for gasoline engines and for diesel engines.
  • the inventive arrangement allows a very precise control of the course of the stroke over time.
  • the state of the art (for example, from the DE 100 05 182 A1 ) calls for a centrally symmetric geometry of the pole webs.
  • the outer iron rings have a smaller cross-section than the inner, etc. This affects the design of the magnetic armature.
  • the invention allows an extent free dimensioning of the magnetic yoke, the magnet coil and armature assembly, resulting in the invention, for example, a relatively lighter-weight magnet armature with an improved valve dynamics results.
  • the pole webs have a pitch which is about 2 to about 30 times, preferably about 5 to about 20 times, and more preferably about 10 times greater than one between the magnet yoke assembly and the magnet armature assembly formed air gap in a rest position of the actuator.
  • the ratio between the pitch of the pole web, so a dimension which co-determines the magnetically active surface of the pole web, and the air gap is a function of the size of the valve significantly influencing size.
  • the invention assumes that the ratio should be in the range of between about 2 and about 30, where any ratio between these limits is within the scope of the invention and primarily on the design conditions or requirements (available installation diameter, length, required valve lift, Valve member dynamics, etc.).
  • pole webs have a substantially asymmetrical shape to the central longitudinal axis of the fuel injection valve is avoided that lead manufacturing inaccuracies or fluctuations in the magnetic field generation, or temperature fluctuations to undesirable operating conditions. Rather, the non-rotationally symmetrical to the central axis of the design of the magnetic yoke or the magnetic coil so far is much less sensitive.
  • the pole webs have a spiral shape to the central longitudinal axis of the fuel injection valve.
  • the pole webs have a substantially polygonal, preferably quadrangular shape and are arranged side by side to form spaces for receiving the solenoid coil assemblies, wherein the pole webs are preferably arranged parallel to each other.
  • At least two adjacent pole webs are surrounded by at least one electromagnet coil arrangement at least partially meandering.
  • a characteristic of the invention is that at least one electromagnet coil arrangement at least partially encloses non-circularly shaped pole webs.
  • a cascading of several valve actuators along the axis of movement of the valve assembly can take place by the actuator more than one assembly formed by the magnet coil assembly, the magnet yoke assembly, and the magnet Anchor arrangement comprises. These assemblies act together on the valve assembly - either in the same direction or in opposite directions.
  • the actuator acts on a movable valve member to move it between an open position and a closed position relative to a stationary valve seat cooperating with the valve member and located downstream of the fuel inlet.
  • the actuating device acts on a movable valve member to move it relative to a cooperating with the valve member fixed valve seat between an open position and a closed position.
  • the magnet yoke arrangement and / or the magnet armature arrangement can be arranged eccentrically or asymmetrically with respect to a center axis of the fuel injection valve.
  • the soft magnetic magnetic yoke assembly may be formed of at least two assembled shell parts with recesses, wherein in each recess in each case a solenoid coil assembly is received, which terminates in the direction of movement substantially flush with the respective end face of the shell parts wherein the end faces together define a cavity, in which the magnet armature assembly is movably received along the central longitudinal axis.
  • the solenoid coil assembly may be formed on at least one side of the soft magnetic armature assembly by a plurality of solenoid coils that terminate approximately flush with one of the end surfaces of one of the shell halves.
  • the individual ring coils may have a thickness of about 20 to about 80% of the magnet yoke iron.
  • the individual coils on one side of the magnetically soft magnet armature arrangement can be set up to be energized in opposite directions.
  • the yoke iron can be formed by iron sheets insulated against each other at least on one side of the magnetically soft magnet armature arrangement.
  • the invention is based on the principle to orient the solenoid coil assembly and the magnet armature assembly substantially at right angles to each other.
  • the magnet coil arrangement and the magnet armature arrangement can at least partially, preferably completely overlap in the radial direction to the central longitudinal axis. This realizes a particularly efficient magnetic circuit that allows very small valve opening / closing times.
  • the magnet yoke arrangement can be designed as a substantially cylindrical soft-magnetic disk body with interruptions oriented radially or tangentially to the central longitudinal axis. These breaks may be simple slots or formed to increase the stability of the magnet yoke assembly by material having a higher magnetic resistance than the material of the soft magnetic disk body.
  • the magnet armature arrangement can be formed by two or more spaced-apart strip-shaped soft magnetic sections.
  • the spatial separations may be simple slots or formed to increase the stability by material having a higher magnetic resistance than the material of the strip-shaped soft magnetic sections.
  • the magnet armature assembly may be a soft magnetic disc with recesses, preferably radially oriented, reaching to the edge of the disc slots, or elongated holes designed. Again, the reaching to the edge of the disc slots or slots can be simple recesses or be formed to increase the stability of material having a higher magnetic resistance than the material of the soft magnetic disc.
  • the magnet armature arrangement can also be constructed in multiple layers, with a ceramic layer being arranged between two soft iron layers. This layer structure is attached to the valve rod. To further improve the stability, the two iron layers can also be connected together along the outer circumference.
  • the soft magnetic armature assembly and the valve member can be interconnected and biased by a spring assembly in the open position or the closed position and bring by energizing the solenoid coil assembly in the closed position or the open position.
  • two of the above-described actuators may be provided which act in opposite directions on the valve member and bring this at respective energization in the closed position or the open position.
  • the fuel injection valve according to the invention can be set up and dimensioned to protrude into the combustion chamber of a foreign-fired internal combustion engine, or into the combustion chamber of a self-igniting internal combustion engine.
  • Fuel injection valve is shown with a to a central longitudinal axis M substantially rotationally symmetrical valve housing 10 in a schematic longitudinal section in a half-open position.
  • a fuel injection valve is used for direct injection of fuel in the not further illustrated combustion chamber of an internal combustion engine.
  • the fuel injector 10 has a radially oriented, lateral fuel inlet 12 through which pressurized fuel can flow into the fuel injector by means of a pump or other pressure transducer not further illustrated.
  • the fuel inlet approximately in 14 indicated in central Fig. 1 Provide the upper portion of the fuel injection valve.
  • a central fuel passage 16 extends through a pipe 17 to a fuel outlet 18.
  • a valve assembly 20 is provided to allow the fuel to flow in a controlled manner through the fuel outlet 18 into the combustion chamber of the internal combustion engine.
  • Valve assembly 20 is formed by a valve member 20a located in the central fuel passage 16 and tapering toward the fuel outlet 18, and a valve seat 20b cooperating with the valve member 20a and configured in accordance with the shape of the valve member 20a.
  • valve member 20a is connected via an actuating rod 22 with an electrically controllable actuator 24 to the valve member 20a between an open position and a closed position (in Fig. 1 move up and down).
  • actuating rod 22 with an electrically controllable actuator 24 to the valve member 20a between an open position and a closed position (in Fig. 1 move up and down).
  • the actuating device 24 is formed by a solenoid coil arrangement 24a, a soft-magnetic magnet yoke arrangement 24b cooperating therewith, and a soft-magnetic magnet armature arrangement 24c cooperating therewith.
  • the magnetically soft magnetic yoke arrangement 24b is formed from two shell halves 24b 'and 24b "which are joined approximately at the level of the section line II-II and have recesses 26a, 26b Fig. 1 in the plan view in the Fig. 4 and 5 shown longitudinal extent and are limited by also approximately trapezoidal or parallelogram-shaped pole webs 25b.
  • a solenoid coil assembly 24a 'and 24a is received, which is flush with the respective end faces 27a, 27b of the shell halves 24b' and 24b" complete.
  • the end surfaces 27a, 27b of the shell halves 24b 'and 24b "define a cavity 28 in which the magnet armature assembly 24c is movably received along the central axis M.
  • the pole webs 25b have a substantially quadrangular shape and are arranged side by side to form spaces for accommodating the solenoid coil assemblies 24a ', 24a "
  • the pole lands 25b are preferably arranged parallel to each other be formed in one piece soft iron, from which the pole web or the spaces are formed in.
  • Interruptions may be incorporated in the form of slots or slotted holes filled with electrically insulating material.
  • the Magnetjochanix as a molded part made of sintered iron powder or to assemble from several mutually insulated sections and to glue if necessary.
  • Fig. 2 shows the soft magnetic magnet armature assembly 24c. It has a soft magnetic armature disc 24c which is arranged around the central axis M around. To keep the induced eddy currents in the armature disk 24c as low as possible during operation of the fuel injection valve, the armature disk 24c is provided with radially oriented interruptions 36. These interruptions have the shape of reaching to the edge of the armature disc 24c slots 36. This results in radially oriented strips 25 which are connected to each other in the center of the disc 24c.
  • the solenoid coil assembly 24a and the radially oriented tabs 25 of the soft magnetic armature disc 24c may be oriented substantially perpendicular to one another. It will be understood that this can be realized either in the form described above with radially oriented strips 25 of the armature assembly 24b and a helical solenoid coil assembly 24a or magnet yoke assembly 24b, or vice versa. But also with anchor parts and a star-shaped solenoid arrangement.
  • Magnetic armature assembly 24c is a circular ferrous disk having a shape described in more detail below.
  • the Etektromagnet coil assembly 24a and the magnet armature assembly 24c overlap in the radial direction with respect to the central axis (M).
  • M central axis
  • the solenoid coil assembly 24a has a smaller outer diameter than the armature disc 24c, so that from the solenoid coil assembly 24a penetrates magnetic flux practically without significant leakage losses in the armature disc 24c penetrates. This results in a particularly efficient magnetic circuit that allows very low valve opening / closing times and high holding forces.
  • the armature disk 24c can also be a closed disk made of soft iron, provided that the above-described embodiment of the magnet yoke or magnet coil arrangement ensures that the leakage losses or eddy current losses are low enough are the respective purpose.
  • the armature disk 24c is rigidly connected to the operating rod 22 and longitudinally movably received in the pipe 17 along the center axis M in the pipe 17, in an armature space 34 bounded by the shell halves 24b 'and 24b "of the magnet yoke assembly 24b is loaded with the actuating rod 22 by a coil spring 40 arranged coaxially with respect to the central axis M, so that the valve member 20a located at the end of the actuating rod 22 is seated in a fluid-tight manner in the valve seat 20b, ie is urged into its closed position during energization of one of the coils (for example 24a ') of the solenoid coil assembly 24a induces a low-turbulence magnetic field in the magnet yoke assembly 24b, which pulls the armature disk 24c with the actuating rod 22 toward the respective shell half 24b' in which the energized coil is located Valve member 20a away from the valve seat 20b in its open position
  • a not further illustrated embodiment of the invention is to couple via the actuating rod 22 with the valve member 20a a plurality (two or more) armature discs 24c, on each of which acts on one or both sides of a spider yoke assembly.
  • the coil arrangement 24a can be designed to be multi-part on both sides of the soft-magnetic magnet armature arrangement 24c.
  • two or more solenoid coil assemblies 24a ', 24a are provided which are substantially flush with the respective end faces 27a, 27b of the shell halves 24b' and 24b".
  • This embodiment can with the same volume of construction an increased magnetic field density and thus also have an increased valve member holding force and valve member operating speed.
  • the yoke iron between the individual coils 24a of one side can be formed here by mutually insulated iron sheets.
  • the two embodiments are shown with electrically controllable actuators 24 in which a central actuating rod 22 is moved by a disk-shaped magnetic armature assembly 24c. It is also possible to provide a tube instead of the central actuating rod 22, on the end face of the magnet armature is arranged.
  • Fig. 3 Every single pole is surrounded by a separate winding. Because of the better overview are in Fig. 3 not all pole webs provided with solenoid coil arrangements shown. In this case, all the solenoid coil assemblies 24a 'and 24a "either wound in the opposite direction and energized in the opposite direction in the same direction winding on opposite flanks 25a', 25a" of the pole webs 25b respectively in opposite directions directed electrical current.
  • the configuration shown has one (or more) windings which are inserted into the recesses 26a, 26b between the pole webs 25b of the magnet yoke arrangement in a maander-shaped manner.
  • the pole webs 25b (and also the recesses 26) have an essentially asymmetrical shape relative to the center longitudinal axis M of the fuel injection valve, in which case the opposing sides 25a, 25a "of each of the pole webs 25b, wherein at least one electromagnet coil arrangement 24a ', 24a "non-annularly shaped pole web at least partially encloses so that on the flanks of oppositely directed electrical current is passed.
  • an electromagnetic coil arrangement 24a is produced integrally with the cooperating soft-magnetic magnet yoke arrangement 24b.
  • a soft iron-containing, elongated yoke plate 50 is surrounded on both sides with a conductor strip 52 by this to a - in the later, finished state inside - longitudinal edge 50 'of the yoke plate 50 is folded over.
  • a soft iron-containing sheet metal strip 54 is arranged, the same is thick as the conductor strip 52 and also to the - in the finished state inside - longitudinal edge 50 'of the yoke plate 50 is folded over.
  • the metal strip 54 lying next to the conductor strip 52 serves, together with the section of the yoke plate 50 on which it rests flat, to form - in the finished state - the back of the magnetic yoke.
  • the conductor strip 52 projects beyond the lateral longitudinal edge 50 "of the yoke plate 50 at both ends for electrical contacting, in the finished state, after which a second layer of a soft iron-containing, elongated yoke plate 56 is placed, so that a layer structure consisting of the first yoke plate 50, the conductor strip 52 and the sheet metal strip 54, and the second yoke plate 56.
  • This layer structure is then in the in Fig. 5 shown spiraled together to obtain the existing of a coil and a yoke overall structure.
  • the first and second yoke laminations 50, 56 are close together and the overall structure is a cylindrical former. It is understood that the conductor strip 52 is electrically isolated from the soft iron side 50, 54, 56.
  • the in Fig. 1 shown, to the central longitudinal axis M coaxial air gap between the magnet yoke assembly 24b and the magnet armature assembly 24c in the rest position of the actuator 24 formed air gap is about 10 times greater than the pitch of the pole webs.
  • the grid dimension in this embodiment is the transverse dimension of the pole webs. In the magnetic yoke 24b after the Fig. 5, 6 the grid dimension is the thickness of the yoke plate 40. Other geometries of the pole webs are also possible.
  • the smallest structures of the pole webs, ie their longitudinal dimensions, transverse dimensions, thickness, etc., which lead to a finely divided shape of the poles of the magnetic yoke acting on the magnet armature, are decisive for the grid dimension. This small grid leads to high magnetic flux density and thus to high tightening or holding forces of the valve assembly and also to a low switching time, since the electrical and magnetic losses or the induced counter forces are very low.
  • armature disk 24c is constructed in several layers.

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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)
  • Magnetically Actuated Valves (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

L'invention concerne une soupape d'injection de carburant pour des systèmes d'injection de carburant de moteurs à combustion interne, ladite soupape servant notamment à injecter du carburant directement dans une chambre de combustion d'un moteur à combustion interne. Cette soupape d'injection présente une entrée de carburant (12) conçue pour permettre au carburant de pénétrer dans la soupape d'injection de carburant, ainsi qu'un dispositif d'actionnement (24) à commande électrique, coopérant avec un ensemble soupape (28) pour faire sortir le carburant par une sortie de carburant (18) et l'injecter, de manière commandée directement ou indirectement, dans la chambre de combustion. Ce dispositif d'actionnement (24) présente un ensemble bobine magnétique (24a) à alimenter en courant, un ensemble culasse magnétique (24b), sensiblement magnétique doux, coopérant avec l'ensemble bobine magnétique, ainsi qu'un ensemble induit magnétique (24c), sensiblement magnétique doux, coopérant avec l'ensemble culasse magnétique. Ce dernier (24b) et/ou l'ensemble induit magnétique sont conçus de manière à réduire les courants de Foucault.

Claims (17)

  1. Soupape d'injection de carburant pour des systèmes d'injection de carburant pour moteurs à combustion interne, servant notamment à injecter du carburant directement dans un compartiment de combustion d'un moteur à combustion interne, comprenant
    - une admission de carburant (12) conçue pour faire pénétrer le carburant dans la soupape d'injection de carburant,
    - un dispositif d'actionnement (24) à commande électrique qui coopère avec un système de soupape (20) pour faire sortir le carburant par commande directe ou indirecte par une sortie de carburant (18) et l'injecter dans le compartiment de combustion,
    -- ledit dispositif d'actionnement (24) présentant un dispositif de bobine magnétique (24a) à alimenter en courant électrique, un dispositif étrier magnétique (24b) à magnétisme sensiblement doux qui coopère avec le dispositif de bobine magnétique, et un dispositif à induit magnétique (24c) à magnétisme sensiblement doux,
    caractérisée en ce que
    - le dispositif étrier magnétique (24b) présente plusieurs segments polaires (25b), lesquels
    sont au moins partiellement entourés par des dispositifs de bobine électromagnétique (24a', 24a") conçus pour faire circuler le long des côtés opposés (25a', 25a") des segments polaires (25b) un courant électrique dirigé à chaque fois en sens contraire,
    -- se présentent sous une forme pour l'essentiel polygonale, sont disposés les uns à côté des autres de manière à former des espaces intermédiaires destinés au logement des dispositifs de bobine électromagnétique (24a', 24a") et sont montés parallèlement les uns par rapport aux autres,
    -- au moins deux segments polaires (25b) voisins étant entourés par au moins un dispositif de bobine électromagnétique (24a', 24a") en forme de méandre.
  2. Soupape d'injection de carburant selon la revendication 1, caractérisée en ce que
    - les segments polaires (25b) présentent une cote de quadrillage qui est 2 à 30 fois, de préférence 5 à 20 fois, et de manière plus particulièrement préférée à peu près dix fois plus grande que l'entrefer formé entre le dispositif étrier magnétique (24b) et le dispositif à induit magnétique (24c) lorsque le dispositif d'actionnement (24) est au repos.
  3. Soupape d'injection de carburant selon l'une des revendications 1 ou 2, caractérisée en ce que
    - un segment polaire (25b) est à chaque fois entouré au moins partiellement par un dispositif de bobine électromagnétique (24a', 24a").
  4. Soupape d'injection de carburant selon l'une des revendications 1 à 3, caractérisée en ce que
    - le dispositif d'actionnement (24) présente plus d'un sous-ensemble constitué par le dispositif de bobine magnétique (24a), le dispositif étrier magnétique (24b) et le dispositif à induit magnétique (24c), ces sous-ensembles agissant conjointement dans le même sens ou en sens contraire sur le système de soupape (20).
  5. Soupape d'injection de carburant selon l'une des revendications 1 à 4, caractérisée en ce que
    - le dispositif d'actionnement (24) agit sur un obturateur mobile (20a) du système de soupape (20) pour faire se déplacer ledit obturateur entre une position ouverte et une position fermée par rapport à un siège de soupape (20b) fixe coopérant avec l'obturateur de soupape (20a) et disposé en aval de l'admission de carburant (12).
  6. Soupape d'injection de carburant selon l'une des revendications précédentes,
    caractérisée en ce que
    - le dispositif étrier magnétique (24b) à magnétisme doux présente au moins deux parties de coque assemblées (24b', 24b") comportant des réservations (26a, 26b) dans chacune desquelles est logé un dispositif de bobine électromagnétique (24a', 24a") qui se termine pour l'essentiel en affleurement avec le côté frontal (27a, 27b) correspondant d'une des parties de la coque (24b', 24b"), les côtés frontaux (27a, 27b) délimitant ensemble une cavité dans laquelle le dispositif à induit magnétique (24c) est logé de manière mobile le long de l'axe médian longitudinal (M).
  7. Soupape d'injection de carburant selon l'une des revendications précédentes,
    caractérisée en ce que
    - le dispositif de bobine électromagnétique (24a', 24a") est constitué sur au moins un côté du dispositif à induit magnétique (24c) à magnétisme doux par plusieurs dispositifs à bobine électromagnétique qui se terminent pour l'essentiel en affleurement avec un des côtés frontaux (27a, 27b) de l'une des moitiés de coque (24b', 24b").
  8. Soupape d'injection de carburant selon l'une des revendications précédentes,
    caractérisée en ce que
    - les bobines ont chacune une épaisseur comprise entre environ 20 et environ 80 % du fer de l'étrier magnétique logé entre deux bobines.
  9. Soupape d'injection de carburant selon l'une des revendications précédentes,
    caractérisée en ce que
    - les bobines sont chacune disposées sur un côté du dispositif à induit magnétique (24c) de manière à être alimentées par un courant en sens contraire.
  10. Soupape d'injection de carburant selon l'une des revendications précédentes,
    caractérisée en ce que
    - le fer de l'étrier logé entre les bobines disposées sur un côté du dispositif à induit magnétique (24c) est constitué par des tôles de fer isolées les unes des autres.
  11. Soupape d'injection de carburant selon l'une des revendications précédentes,
    caractérisée en ce que
    - le dispositif de bobine électromagnétique (24a) et le dispositif à induit magnétique (24c) sont orientés perpendiculairement l'un par rapport à l'autre.
  12. Soupape d'injection de carburant selon l'une des revendications précédentes,
    caractérisée en ce que
    - le dispositif de bobine électromagnétique (24a) et le dispositif à induit magnétique (24c) se chevauchent au moins partiellement dans le sens radial par rapport à l'axe médian (M).
  13. Soupape d'injection de carburant selon l'une des revendications précédentes,
    caractérisée en ce que
    - le dispositif à induit magnétique (24c) est conçu sous forme d'un corps discoïde à magnétisme doux qui est pour l'essentiel cylindrique et muni d'interruptions (36) orientées radialement.
  14. Soupape d'injection de carburant selon l'une des revendications précédentes,
    caractérisée en ce que
    - le dispositif à induit magnétique (24c) est formé par deux segments (25) ou plus qui sont en forme de bandes et séparés dans l'espace les uns des autres.
  15. Soupape d'injection de carburant selon l'une des revendications précédentes,
    caractérisée en ce que
    - le dispositif à induit magnétique (24c) et l'obturateur de soupape (20a) sont reliés l'un à l'autre et précontraints par un ensemble ressort (40) dans la position ouverte ou dans la position fermée, et peuvent être amenés dans la position ouverte ou dans la position fermée par alimentation en courant du dispositif de bobine magnétique (24a).
  16. Système de soupape d'injection de carburant selon l'une des revendications précédentes, caractérisée en ce que
    - la soupape d'injection de carburant est conçue et dimensionnée pour faire saillie dans le compartiment de combustion d'un moteur à combustion à allumage commandé.
  17. Soupape d'injection de carburant selon l'une des revendications 1 à 14, caractérisée en ce que
    - la soupape d'injection de carburant est conçue et dimensionnée pour faire saillie dans le compartiment de combustion d'un moteur à combustion à allumage automatique.
EP04707203A 2003-04-29 2004-02-02 Soupape d'injection de carburant pour moteurs a combustion interne Expired - Fee Related EP1618298B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2003119285 DE10319285B3 (de) 2003-04-29 2003-04-29 Brennstoff-Einspritzventil für Brennkraftmaschinen
PCT/EP2004/000929 WO2004097207A1 (fr) 2003-04-29 2004-02-02 Soupape d'injection de carburant pour moteurs a combustion interne

Publications (2)

Publication Number Publication Date
EP1618298A1 EP1618298A1 (fr) 2006-01-25
EP1618298B1 true EP1618298B1 (fr) 2008-07-02

Family

ID=32892455

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04707203A Expired - Fee Related EP1618298B1 (fr) 2003-04-29 2004-02-02 Soupape d'injection de carburant pour moteurs a combustion interne

Country Status (7)

Country Link
US (1) US7533834B2 (fr)
EP (1) EP1618298B1 (fr)
JP (1) JP2006524771A (fr)
KR (1) KR20060021303A (fr)
CN (1) CN1780979A (fr)
DE (2) DE10319285B3 (fr)
WO (1) WO2004097207A1 (fr)

Cited By (1)

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US10823305B2 (en) 2015-09-24 2020-11-03 Vitesco Technologies GmbH Laminated solenoid armature for an electromagnetic activation device and injection valve for metering a fluid

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DE102004032229B3 (de) 2004-07-02 2006-01-05 Compact Dynamics Gmbh Brennstoff-Einspritzventil
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DE102007028203B3 (de) * 2007-06-15 2008-12-04 Siemens Ag Magnetisches Antriebssystem für eine Schalteinrichtung
US7552719B2 (en) * 2007-12-04 2009-06-30 Caterpillar Inc. Solenoid assembly having slotted stator
DE102007062176A1 (de) * 2007-12-21 2009-06-25 Robert Bosch Gmbh Druckregelventil zur Regelung des Drucks in einem Hochdruck-Kraftstoffspeicher
DE102009038730B4 (de) 2009-08-27 2014-03-13 Vacuumschmelze Gmbh & Co. Kg Blechpaket aus weichmagnetischen Einzelblechen, elektromagnetischer Aktor und Verfahren zu deren Herstellung sowie Verwendung eines weichmagnetischen Blechpakets
KR20110029443A (ko) * 2009-09-15 2011-03-23 현대자동차주식회사 연료 분사량 편차 감소를 위한 콘트롤 밸브 및 이를 포함한 인젝터
US8807463B1 (en) * 2013-03-14 2014-08-19 Mcalister Technologies, Llc Fuel injector with kinetic energy transfer armature
FR3084772B1 (fr) * 2018-08-01 2021-06-18 Schneider Electric Ind Sas Actionneur electromagnetique et appareil de commutation electrique comportant cet actionneur

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10823305B2 (en) 2015-09-24 2020-11-03 Vitesco Technologies GmbH Laminated solenoid armature for an electromagnetic activation device and injection valve for metering a fluid

Also Published As

Publication number Publication date
KR20060021303A (ko) 2006-03-07
DE10319285B3 (de) 2004-09-23
WO2004097207A1 (fr) 2004-11-11
US20070175436A1 (en) 2007-08-02
EP1618298A1 (fr) 2006-01-25
CN1780979A (zh) 2006-05-31
US7533834B2 (en) 2009-05-19
JP2006524771A (ja) 2006-11-02
DE502004007492D1 (de) 2008-08-14

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