EP0914556B1 - Soupape d'injection de carburant - Google Patents

Soupape d'injection de carburant

Info

Publication number
EP0914556B1
EP0914556B1 EP97949951A EP97949951A EP0914556B1 EP 0914556 B1 EP0914556 B1 EP 0914556B1 EP 97949951 A EP97949951 A EP 97949951A EP 97949951 A EP97949951 A EP 97949951A EP 0914556 B1 EP0914556 B1 EP 0914556B1
Authority
EP
European Patent Office
Prior art keywords
valve seat
fuel injection
seat body
perforated
inlet
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 - Lifetime
Application number
EP97949951A
Other languages
German (de)
English (en)
Other versions
EP0914556A1 (fr
Inventor
Heinz Fuchs
Günter DANTES
Jörg HEYSE
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0914556A1 publication Critical patent/EP0914556A1/fr
Application granted granted Critical
Publication of EP0914556B1 publication Critical patent/EP0914556B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
    • F02M61/184—Discharge orifices having non circular sections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/162—Means to impart a whirling motion to fuel upstream or near discharging orifices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/166—Selection of particular materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F02M61/1853—Orifice plates
    • F02M61/186—Multi-layered orifice plates
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S239/00—Fluid sprinkling, spraying, and diffusing
    • Y10S239/90—Electromagnetically actuated fuel injector having ball and seat type valve

Definitions

  • the invention relates to a fuel injection valve for fuel injection systems of internal combustion engines.
  • a fuel injection valve which has a valve seat body on which a fixed valve seat is formed.
  • This valve seat formed in the valve seat body acts in the injection valve axially movable valve closing body together.
  • the valve seat body is adjoined in the downstream direction by a flat nozzle straightening plate in which an H-shaped depression facing the valve seat is provided as the inlet region.
  • To the H-shaped inlet region in the downstream direction four Abspritzlöcher, so that a fuel to be sprayed can distribute over the inlet area to the spray holes.
  • An influence of the flow geometry in the nozzle orifice plate through the valve seat body should not occur. Rather, a flow passage downstream of the valve seat in the valve seat body is designed so far that the valve seat body has no influence on the opening geometry of the Düsenrichtplatte.
  • a fuel injection valve for fuel injection systems of internal combustion engines which has a fixed valve seat having valve seat body.
  • a conical valve closing portion is provided, which cooperates with the valve seat, wherein the valve needle is axially movable along a valve longitudinal axis.
  • the fuel injector has a plastic protective cap.
  • This protective cap has an inlet area and a plurality of outlet openings in a middle area, wherein an upper functional area having the inlet area has a different opening geometry in cross section than a lower functional level having the outlet openings in this central cap area.
  • the valve seat body partially covers the inlet area of the protective cap directly with a lower end side such that the outlet openings are covered by the valve seat body.
  • the inlet region in the protective cap is formed in that a single central depression of the lower end face of the valve seat body facing in the bottom part of the otherwise cup-shaped protective cap is formed. Starting from this one depression of the protective cover, all the outlet openings extend.
  • the fuel injection valve according to the invention with the features of the independent claim 1 has the advantage that in a simple manner a uniform Feinstzerstäubung the fuel is achieved without additional energy, with a particularly high Zerstäubungsgüte and adapted to the particular requirements beam shaping is achieved.
  • This is achieved in an advantageous manner in that a downstream of a valve seat arranged perforated disc has an opening geometry for a complete axial passage of the fuel, which is bounded by a solid valve seat comprising the valve seat body.
  • the valve seat body already assumes the function of influencing the flow in the perforated disc, which could be achieved in previously known perforated discs by the upper layers or functional levels.
  • an S-impact is achieved in the flow for atomization improvement of the fuel, since the valve seat body covers the outlet openings of the perforated disk with a lower end face.
  • valve seat body and perforated disc S-blow in the flow allows the formation of strange beam shapes with a high Zerstäubungsgüte.
  • the perforated discs allow in conjunction with appropriately designed valve seat bodies for one-, two- and multi-jet sprays beam cross sections in countless variations, such. As rectangles, triangles, crosses, ellipses.
  • Such unusual beam shapes allow accurate optimal adaptation to given geometries, eg. B. to different Saugrohrqueritese of internal combustion engines. This results in the advantages of a shape-adapted utilization of the available cross-section for homogeneously distributed, exhaust gas-reducing mixture introduction and avoidance of harmful Wandfilmstromronne on Saugrohrwandung. With such a fuel injection valve, therefore, the exhaust emission of the internal combustion engine can be reduced and also a reduction in fuel consumption can be achieved.
  • perforated disks By means of electrodeposition, perforated disks can be produced in a reproducible manner in an extremely precise and cost-effective manner in very large numbers simultaneously. In addition, this production allows an extremely large design freedom, since the contours of the openings in the perforated disc can be selected freely. Particularly in comparison to silicon perforated disks, in which due to the crystal axes achievable contours are strictly predetermined (truncated pyramids), a flexible shape is very advantageous.
  • the metallic deposition has the advantage of a very large variety of materials, especially in comparison to the production of silicon wafers. The most diverse metals with their different magnetic properties and hardnesses can be used in the production of perforated discs.
  • a functional plane is characterized by a constant opening geometry viewed over its axial thickness, which differs correspondingly from the opening geometry of the subsequent functional plane. Since the valve seat body ultimately defines the entry geometry in the perforated disc, two functional levels are sufficient to achieve an S-shaped flow path.
  • the advantages of a simpler, cheaper and shorter in time production since on the one hand less metallic material must be deposited and on the other hand can be dispensed with electroplating starting layers.
  • the photoresist can be removed much easier.
  • the accuracy in the production of perforated discs can be better check, because all opening contours of the perforated disc from an outer end face are visible.
  • FIG. 2 shows a perforated disk of Figure 1 in a plan view
  • Figure 3 shows a partially illustrated inventive injection valve with a perforated disk downstream of the valve seat body
  • Figure 4 is a perforated disk of Figure 3 in 6 shows a perforated disk in section along the line VI-VI in Figure 5
  • Figure 7 shows a perforated disk according to the invention in a plan view
  • Figure 8 shows a perforated disk in section along the line VIII-VIII 9 shows a perforated disk according to the invention in a plan view
  • FIG. 10 shows a perforated disk in section along the line XX in FIG. 9
  • FIG. 11 shows a perforated disk according to the invention in a plan view
  • FIG. 12 shows a perforated disk in section along the line XII-XII in FIG 11th
  • FIG 1 is as an example a valve in the form of an injection valve for Fuel injection systems of mixture-compression spark-ignition internal combustion engines partially shown.
  • the injection valve has a tubular valve seat carrier 1 in which a longitudinal opening 3 is formed concentrically to a valve longitudinal axis 2.
  • a longitudinal opening 3 is formed concentrically to a valve longitudinal axis 2.
  • the actuation of the injection valve takes place in a known manner, for example electromagnetically.
  • a schematically indicated electromagnetic circuit with a solenoid 10, an armature 11 and a core 12.
  • the armature 11 is connected to the valve closing body. 7 opposite end of the valve needle 5 by z. B. connected by means of a laser weld and aligned with the core 12.
  • a guide opening 15 of a valve seat body 16 which is mounted in the downstream, the core 12 remote from the end of the valve seat support 1 in the concentric with the valve longitudinal axis 2 extending longitudinal opening 3 by welding.
  • lower end face 17 of the valve seat body 16 with a z. B.
  • cup-shaped perforated disc carrier 21 concentrically and firmly connected, thus at least with an outer ring portion 22 abuts directly against the valve seat body 16.
  • the perforated disc carrier 21 has a similar shape as already known cup-shaped injection perforated discs, wherein a central region of the perforated disc carrier 21 is provided with a passage opening 20 without Zumeßfunktion.
  • a perforated disc 23 is disposed upstream of the through hole 20 so as to completely cover the through hole 20.
  • the perforated disc 23 represents only one insert part which can be inserted into the perforated disc carrier 21.
  • the perforated disc carrier 21 is designed with a bottom part 24 and a retaining edge 26.
  • the retaining edge 26 extends in the axial direction facing away from the valve seat body 16 and is bent conically outward to its end.
  • the bottom part 24 is formed by the outer ring portion 22 and the central through hole 20.
  • connection of the valve seat body 16 and the perforated disc carrier 21 is effected, for example, by a circumferential and sealed first weld 25 formed by a laser.
  • a circumferential and sealed first weld 25 formed by a laser.
  • the perforated disc 23 comprises z.
  • a Functional level should have over its axial extent in each case a largely constant opening contour, so that just the next functional level has a different opening contour.
  • the depth of insertion of the valve seat body 16, cup-shaped perforated disc carrier 21 and perforated disc 23 valve seat portion in the longitudinal opening 3 determines the size of the stroke of the valve needle 5, since the one end position of the valve needle 5 at non-energized solenoid 10 by the system of the valve closing body 7 at a downstream conically tapered valve seat surface 29 of the valve seat body 16 is fixed.
  • the other end position of the valve needle 5 is fixed in the excited magnet coil 10, for example, by the system of the armature 11 to the core 12. The path between these two end positions of the valve needle 5 thus represents the stroke.
  • the spherical valve closing body 7 cooperates with the frusto-conical valve seat surface 29 of the valve seat body 16 in the axial direction between the guide opening 15 and a lower cylindrical, extending to the end face 17 outlet opening 31 of the valve seat body 16 is formed.
  • a clamping with the perforated disc carrier 21 as an indirect attachment of the perforated disc 23 on the valve seat body 16 has the advantage that temperature-induced deformations are avoided, which could possibly occur in processes such as welding or soldering in a direct attachment of the perforated disc 23.
  • the perforated disc carrier 21 is by no means an exclusive condition for fixing the perforated disc 23. Since the mounting options are not essential to the invention, only the reference to common known joining methods, such as welding, soldering or gluing, should be made here.
  • the z. B. of metal (titanium, copper), silicon, glass or ceramic can exist.
  • at least one auxiliary layer is first electroplated onto the carrier plate.
  • This is, for example, an electroplating starter layer (eg Cu), which is required for the electrical conduction for the subsequent microplating.
  • the electroplating starter layer can also serve as a sacrificial layer in order subsequently to allow a simple singulation of the perforated disc structures by etching.
  • the application of the auxiliary layer typically CrCu or CrCuCr
  • a photoresist photoresist
  • the thickness of the photoresist should correspond to the thickness of the metal layer that is to be realized in the subsequent electroplating process, ie the thickness of the lower functional level of the perforated disc 23.
  • the metal structure to be realized is to be inversely transmitted in the photoresist by means of a photolithographic mask. One possibility is to expose the photoresist directly via the mask by means of UV exposure (UV deep lithography).
  • the negative structure ultimately resulting in the photoresist to the later functional level of the perforated disc 23 is filled with metal (eg Ni, NiCo) galvanically (metal deposition).
  • the metal adheres to the contour of the negative structure by electroplating, so that the predetermined contours are faithfully reproduced in it.
  • the steps must be repeated from the optional application of the auxiliary layer according to the number of desired axially consecutive opening contours, wherein z. B. the two functional levels of the perforated disc 23 can also be generated in a galvanic step.
  • a further electroplating starter layer is advantageously not required when constructing a perforated disc 23 comprising two functional levels.
  • the singling out of the perforated disks 23 for this purpose, the sacrificial layer is etched away, whereby the perforated disks 23 lift off from the carrier plate. Thereafter, the remaining photoresist is dissolved out of the metal structures.
  • FIG. 2 shows, as a non-inventive example of a perforated disk 23, the perforated disk 23 shown in section in FIG. 1 in a plan view.
  • the perforated disc 23 is designed as a flat, circular component having at least two axially successive functional levels.
  • a lower, first deposited functional level 35 has outlet openings 39 defined by the microplating, while the microgalvanically produced opening contour of an upper functional level 36 is additionally influenced or limited by the valve seat body 16.
  • Both functional levels 35 and 36 are z. B. produced in a galvanic step.
  • the upper functional level 36 has an inlet area 40, which has a rectangular contour and ultimately represents a depression in the perforated disc 23. Starting from the inlet region 40, the z. B. four outlet ports 39, which are arranged near the four corners of the inlet portion 40 and executed with square cross-sections, through the lower functional level 35 to a lower end face 38 of the perforated disc 23 ( Figure 1).
  • the valve seat body 16 is formed with its lower outlet opening 31 such that the lower end face 17 of the valve seat body 16 partially forms an upper cover of the inlet portion 40 of the upper functional level 36 of the perforated disc 23 and thus defines the entrance surface of the fuel in the perforated disc 23.
  • the outlet opening 31 has a smaller diameter than the diameter of an imaginary circle on which the outlet openings 39 of the perforated disc 23 are located. In other words, there is a complete offset of the inlet opening 31 and the outlet openings 39 defining the inlet of the perforated disc 23.
  • the valve seat body 16 covers all outlet openings 39.
  • the transversal impulses transverse to the flow due to the turbulence cause the droplet distribution density in the spray spray to be very uniform. This results in a reduced probability of droplet coagulation, ie associations of small droplets to larger droplets.
  • the consequence of the advantageous reduction of the average droplet diameter in the spray is a relatively homogeneous spray distribution. Due to the S-blow, a fine-scale (high-frequency) turbulence is generated in the fluid, which causes the jet to disintegrate into correspondingly fine droplets immediately after emerging from the perforated disk 23.
  • FIG. 3 shows an exemplary embodiment of a partially illustrated injection valve according to the invention.
  • the comparison with the non-inventive example shown in Figure 1 same or equivalent components are characterized by the same reference numerals.
  • the injection valve of Figure 3 corresponds essentially to the injection valve of Figure 1, which is why in the following only the differing regions outlet opening 31, perforated disc 23 and disc carrier 21 are explained in more detail.
  • the outlet opening 31 now represents the extension of the valve seat surface 29 which tapers frustoconically in the flow direction and therefore likewise has a frustoconical shape.
  • the valve seat surface 29 thus follows in the downstream direction no cylindrical area.
  • the turn having two functional levels 35 and 36 possessing perforated disc 23 has in this embodiment four formed in the upper functional level 36 inlet portions 40, which is clearly the figure 4 as a plan view of the perforated disc 23 can be removed.
  • the valve seat body 16 covers with its lower end face 17, the four inlet regions 40 in turn such that a complete offset of the outlet opening 31 and the four formed in the lower functional level 35 outlet openings 39 is formed.
  • the four inlet regions 40 are separated from one another by material regions of the upper functional plane 36, which are built up from the lower functional plane 35 by further microgalvanic deposition.
  • the perforated disc carrier 21 is executed angled near the passage opening 20, so that it can engage under the perforated disc 23 at its outer edge with precision and can press against the end face 17 of the valve seat body 16.
  • FIG. 4 shows the arrangement of the four z.
  • the inlet portions 40 are formed by 90 ° to each other, wherein the inlet portions 40 do not touch, since they are separated from electrodeposited material regions of the upper functional level 36 from each other. In this case, an almost square material region is formed in the center of the perforated disc 23, starting from which the four inlet regions 40 extend radially outwardly.
  • FIG. 7 to 12 further embodiments of two functional levels 35 and 36 having perforated discs 23 are shown, which, similar to Figures 3 and 4, according to the invention by the valve seat body 16 experience a flow influence.
  • All subsequent embodiments according to the invention of the perforated discs 23 of Figures 7 to 12 have in common that they have several completely separate from each other inlet portions 40 in the upper functional level 36 and in the same number of outlet ports 39 in the lower functional level 35, wherein the inlet portions 40 each with respect to Their width or width are designed so that all outlet openings 39 are completely overflowed. This means that none of the inlet regions 40 bounding walls covers the outlet openings 39. As a result, the inlet portions 40 usually have larger cross-sections than the outlet ports 39 emanating therefrom.
  • the inlet area 40 is designed in a double diamond-like shape, the two diamonds being connected by a central connecting area 42, so that only a single inlet area 40 is present.
  • FIG. 6 is a sectional view taken along a line VI-VI in FIG. 5.
  • perforated discs 23 of Figures 7 to 12 have different opening geometries of the inlet portions 40 and the outlet openings 39 relative to the non-inventive example shown in Figures 5 and 6, to illustrate that very easily other jet patterns or Abspritzmuster can be achieved .
  • a conical jet spray FIGS. 7 and 8
  • asymmetrical jet images FIGS. 9 and 10
  • swirling jet images FIGS. 11 and 11
  • FIG. 7 and 8 has, for example, four circular inlet regions 40, which are arranged substantially uniformly around the center of the perforated disk 23 and are also designed in the same size.
  • an outlet opening 39 which in turn has a square cross-section in the illustrated exemplary embodiment, runs through the lower functional plane 35.
  • Other cross-sectional shapes eg circular, oval, polygonal
  • the outlet openings 39 do not extend from the center of the inlet areas 40 to the lower one End face 38 of the perforated disc 23, but are formed in the plan view of the perforated disc 23 in the clockwise direction behind the respective centers of the inlet regions 40. This becomes particularly clear in the figure 8, which represents the perforated disc 23 as a section along a line VIII-VIII in Figure 7.
  • FIGS. 9 and 10 show a perforated disk 23 with which an asymmetrical spray pattern can be generated.
  • the perforated disc 23 has three oval or egg-shaped inlet portions 40 in the upper functional level 36 and three formed in the lower functional level 35 outlet openings 39, which are formed, for example, square. In each case an inlet region 40 forms with each outlet opening 39 a functional unit with a complete axial passage for the fuel.
  • the three inlet portions 40 are asymmetrically distributed in the form of a triangle over the perforated disc surface 23, wherein the three outlet openings 39 also constitute eccentric outlets from the inlet regions 40.
  • Such a perforated disc 23 with an asymmetrically producible jet pattern can be used in particular in so-called oblique jet valves. This is even under unfavorable installation conditions a very targeted zipping z. B. ensures an intake valve of an internal combustion engine without wetting the wall of a suction pipe.
  • FIG. 10 is a sectional view taken along a line XX in FIG. 9.
  • FIGS. 11 and 12 A last embodiment of a perforated disk 23 is shown in FIGS. 11 and 12, wherein FIG. 12 is a sectional view along a line XII-XII in FIG.
  • FIG. 12 is a sectional view along a line XII-XII in FIG.
  • the inlet regions 40 are designed to be six-shaped or nine-shaped depending on the view, wherein the protruding from the approximately circular shaped portions 43 Tangentialarme 44 are pointing largely clockwise pointing to the center of the perforated disc 23 and ultimately to the valve longitudinal axis 2 out.
  • the valve seat body 16 covers the inlet portions 40, for example, such that the fuel from the outlet opening 31 can enter only into the Tangentialarme 44, from where it flows into the circular areas 43 of the inlet portions 40 and in the middle there running, circular cross-sections having outlet ports 39th can occur.
  • the swirling fuel leaves the orifice plate 23 via the outlet ports 39.
  • the swirling action of the fuel is a particularly sputtering-promoting measure of the fuel. Similar to the six- or nine-shaped inlet regions 40, differently shaped swirl-producing inlet regions 40 may be provided in their place. the z. B. spiral, sickle-shaped or circular arc are executed.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Claims (8)

  1. Injecteur de carburant pour installations d'injection de carburant de moteurs à combustion interne, doté d'un axe longitudinal de soupape (2), d'un corps de siège de soupape présentant un siège de soupape fixe (29), d'un obturateur de soupape (7) coopérant avec le siège de soupape (29) et mobile axialement le long de l'axe longitudinal de soupape (2), d'un disque perforé (23) en amont du siège de soupape (29) et présentant une zone d'entrée (40) et au moins une ouverture de sortie (39), un plan fonctionnel supérieur (36) contenant la zone d'entrée (40) ayant en section transversale une géométrie d'ouverture différente d'un plan fonctionnel inférieur (35) présentant au moins une ouverture de sortie (39) et le corps de siège de soupape (16) recouvrant partiellement directement la zone d'entrée (40) du disque perforé (23) avec une face avant inférieure (17) de sorte qu'au moins deux orifices de sortie (39) soient recouverts par le corps de siège de soupape (16), dans lequel
    le disque perforé (23) comporte plusieurs zones d'entrée (40) séparées complètement les unes des autres par des zones de matière du plan fonctionnel supérieur (36) autant d'ouvertures (39) de manière de sortie qu'exactement une ouverture de sortie (39) parte de chaque zone d'entrée (40), et que le corps de siège de soupape (16) recouvre partiellement directement toutes les zones d'entrée (40) du disque perforé (23) avec la face frontale inférieure (17) pour que toutes les ouvertures de sortie (39) soient recouvertes par le corps de siège de soupape (16).
  2. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    les plans fonctionnels inférieur et supérieur (35, 36) du disque perforé (23) sont montés métalliquement l'un sur l'autre.
  3. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    chaque zone d'entrée (40) du disque perforé (23) présente une plus grande section transversale que chaque ouverture de sortie individuelle (39).
  4. Injecteur de carburant selon la revendication 3,
    caractérisé en ce qu'
    aucune ouverture de sortie (39) n'est recouverte par une paroi de la zone d'entrée respective (40).
  5. Injecteur de carburant selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    les ouvertures de sortie (39) ont des sections transversales carrées, rectangulaires, polygonales, circulaires ou ovales.
  6. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    les zones d'entrée (40) sont disposées à la surface du disque perforé (23) pour créer des jets coniques, planes, asymétriques ou à plusieurs faisceaux.
  7. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    les zones d'entrée (40) sont formées pour créer une contrainte tourbillonnaire du carburant.
  8. Injecteur de carburant selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    le disque perforé (23) peut être fixé sur le corps de siège de soupape (16) à l'aide d'un support de pastille.
EP97949951A 1997-01-30 1997-11-19 Soupape d'injection de carburant Expired - Lifetime EP0914556B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19703200A DE19703200A1 (de) 1997-01-30 1997-01-30 Brennstoffeinspritzventil
DE19703200 1997-01-30
PCT/DE1997/002706 WO1998034026A1 (fr) 1997-01-30 1997-11-19 Soupape d'injection de carburant

Publications (2)

Publication Number Publication Date
EP0914556A1 EP0914556A1 (fr) 1999-05-12
EP0914556B1 true EP0914556B1 (fr) 2006-10-04

Family

ID=7818678

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97949951A Expired - Lifetime EP0914556B1 (fr) 1997-01-30 1997-11-19 Soupape d'injection de carburant

Country Status (6)

Country Link
US (1) US6170763B1 (fr)
EP (1) EP0914556B1 (fr)
JP (1) JP2000508739A (fr)
KR (1) KR100623891B1 (fr)
DE (2) DE19703200A1 (fr)
WO (1) WO1998034026A1 (fr)

Families Citing this family (82)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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JP2000508739A (ja) 2000-07-11
US6170763B1 (en) 2001-01-09
DE59712741D1 (de) 2006-11-16
DE19703200A1 (de) 1998-08-06
WO1998034026A1 (fr) 1998-08-06
KR20000064808A (ko) 2000-11-06
KR100623891B1 (ko) 2006-12-13

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