EP1228306B1 - Soupape d'injection de carburant avec element tourbillonnaire - Google Patents

Soupape d'injection de carburant avec element tourbillonnaire Download PDF

Info

Publication number
EP1228306B1
EP1228306B1 EP01982155A EP01982155A EP1228306B1 EP 1228306 B1 EP1228306 B1 EP 1228306B1 EP 01982155 A EP01982155 A EP 01982155A EP 01982155 A EP01982155 A EP 01982155A EP 1228306 B1 EP1228306 B1 EP 1228306B1
Authority
EP
European Patent Office
Prior art keywords
swirl
fuel injection
injection valve
swirl element
fuel
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
EP01982155A
Other languages
German (de)
English (en)
Other versions
EP1228306A1 (fr
Inventor
Guenter Dantes
Detlef Nowak
Joerg Heyse
Michael Klaski
Wolfgang Mertzky
Matthias Waldau
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 EP1228306A1 publication Critical patent/EP1228306A1/fr
Application granted granted Critical
Publication of EP1228306B1 publication Critical patent/EP1228306B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
    • F02M51/0671—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/162—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
    • F02M61/18—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

Definitions

  • the invention relates to a fuel injection valve according to the preamble of claim 1.
  • Swirl-generating means located downstream of the valve seat are typically configured to introduce fuel into radially outer ends of swirl channels, which are then directed radially inwardly to a swirl chamber into which it enters with a tangential component. From the swirl chamber then exits the swirling fuel. From DE-OS 198 15 775 a fuel injection valve is already known in which downstream of the valve seat a swirl disk is provided which has such a flow course.
  • Examples of fuel injection valves with swirl elements upstream of the valve seat for example, WO 98/35159 or DE-OS 197 36 682.
  • the swirl elements are basically designed so that the fuel is supplied radially from the outside in the direction of the central valve seat.
  • a fuel injection valve in which a nozzle plate is provided downstream of the valve seat.
  • This nozzle plate has a plurality of Schaufelradä 21 arranged swirl pits, which are distributed annularly over the nozzle plate.
  • Each individual swirl depression has an inlet region from which the fuel with a partial radial component is transported in the direction of an annular gap with a larger diameter.
  • a fuel injection valve for fuel injection systems of internal combustion engines is already known, which is suitable for injecting fuel into two intake manifolds of an internal combustion engine in the direction of two intake valves.
  • the fuel injection valve has an actuator through which a valve member in the form of a valve needle, which cooperates with a fixed valve seat, which is formed on a valve seat body, for opening and closing the valve, is movable along a valve longitudinal axis.
  • a swirl element in the form of a cup-shaped attachment body is arranged downstream of the valve seat, which has an inlet region and four outlet openings.
  • the single inlet region is centrally provided in the swirl element, so that all swirl channels emanate from it to the corresponding outlet openings, through which fuel flows only radially from the inside to the outside.
  • Each swirl channel opens tangentially into exactly one circular swirl space, from which exactly one outlet opening is supplied with fuel.
  • the fuel injection valve is suitable for supplying individual intake valves with a plurality of fuel jets or for simultaneously supplying fuel to a plurality of intake valves of the internal combustion engine.
  • the fuel injection valve according to the invention with the characterizing features of claim 1 has the advantage that with him a very high Zerstäubungsgüte a fuel to be sprayed is achieved. As a consequence, with such an injection valve of an internal combustion engine u.a. reduces the exhaust emission of the internal combustion engine and also a reduction in fuel consumption can be achieved.
  • the swirl element is very simple and reliable attachable to the fuel injector. Due to the central flow of the swirl element, the required attachment points are far away from the valve seat, the subsequent outlet opening and the inlet area of the swirl element. Such an arrangement allows a reduction of the dead volume in the flow behind the valve seat. The risk of so-called post-splashes in engine operation is so greatly reduced because little or no fuel is stored in the inflow area.
  • the spray geometry lying radially further outward through the central flow of the swirl ducts may be advantageous in certain installation conditions, in particular when using the fuel injection valve for direct injection into the combustion chamber of a spark-ignition internal combustion engine, since in this way the risk of coking of the spray-off geometry is reduced.
  • the swirl element can be produced cost-effectively in a particularly simple manner.
  • a particular advantage is that the swirl elements can be reproduced in a very precise manner in very large quantities at the same time (high batchability).
  • the upstream layer is a cover layer with a central inlet opening which completely covers the swirl channels of a central swirl-generating layer.
  • the swirl generation layer is formed by a plurality of material regions, which predetermine the contours of the swirl channels due to their contouring and their geometric position relative to one another. Due to the electroplating process, the individual layers without separation or joints are built on each other so that they are homogeneous throughout Represent material. In this respect, "layers" are to be understood as mental aids.
  • FIG. 2 shows a plan view of a swirl element shown along line II in FIG. 1
  • FIG. 3 shows a noninventive embodiment of a fuel injection valve with a swirl element having an obliquely extending outlet opening
  • FIG 5 shows a longitudinal section through a swirl element produced by means of multilayer electroplating
  • FIG. 6 shows a cross-sectional view of a central swirl generation layer of the swirl element shown in FIG. 5.
  • FIG Figure 7 shows a second cross-sectional view of a central swirl generation layer by means of multilayer electroplating 8 shows a third cross-sectional view of a central swirl-producing layer of a swirl element produced by means of multilayer electroplating, and
  • FIG Figure 9 shows another embodiment of a fuel injection valve partially shown with a swirl element.
  • valve in the form of an injection valve for fuel injection systems of mixture-compression spark-ignition internal combustion engines partially and simplified.
  • the injector has a tubular valve seat carrier 1, in which a longitudinal opening 3 is formed concentrically to a valve longitudinal axis 2.
  • a valve needle 5 is arranged, which has a valve closing portion 7 at its downstream end.
  • 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 portion. 7 opposite end of the valve needle 5 by z. B. connected by means of a laser weld and aligned with the core 12.
  • another excitable actuator e.g. a piezo stack to be used in a comparable fuel injection valve or the actuation of the axially movable valve member by a hydraulic pressure or servo pressure.
  • the guiding element 14 has at least one flow opening 15, through which fuel can flow from the longitudinal opening 3 in the direction of a valve seat to guide the valve needle 5 during the axial movement.
  • the example disc-shaped guide member 14 is fixedly connected to a valve seat body 16, for example by means of a circumferential weld.
  • the valve seat body 16 is, for example, tightly mounted by welding at the end of the valve seat carrier 1 facing away from the core 12.
  • the position of the valve seat body 16 determines the size of the stroke of the valve needle 5, since the one end position of the valve needle 5 is fixed at non-energized solenoid 10 by the system of the valve closing portion 7 at a downstream conically tapered valve seat surface 22 of the valve seat body 16.
  • 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 valve closing portion 7 cooperates with the frusto-conical valve seat surface 22 of the valve seat body 16 to form a sealing seat. Downstream of the valve seat surface 22, the valve seat body 16 has a central outlet opening 23.
  • a e.g. disc-shaped swirl element 25 On the valve seat body 16 downstream of the outlet opening 23 is a e.g. disc-shaped swirl element 25 is arranged, which is secured, for example, in turn, by welding to the valve seat body 16.
  • the swirl element 25 has a single central inlet region 27, which immediately follows the outlet opening 23 of the valve seat body 16 and which lies in the region of the valve longitudinal axis 2. Starting from this inlet region 27, at least one swirl duct 28 extends radially outwards, which opens into an outlet opening 29 of the swirl element 25 there.
  • the fuel injection valve is designed in particular as a so-called multi-hole valve ( Figure 4), which is particularly suitable for direct injection of fuel into a combustion chamber, not shown.
  • fuel injectors for the direct injection of fuel into a combustion chamber whose outlet openings directly exposed to the combustion chamber atmosphere are strongly prone to coke.
  • the fuel injection valve according to the invention is to be avoided to a large extent that coking deposits of the combustion chamber in the region of the outlet openings 29 enforce this and thus significantly change the injection quantities over the life of the valve.
  • the swirl element 25 is a disk-shaped component which is embodied as a spray-perforated disk and which is designed in two layers, at least in the region of the opening structure 27, 28, 29.
  • the upper, the valve seat body 16 facing position includes the central inlet portion 27 and the at least one swirl duct 28, while the lower layer of the opening structure of the outlet opening 29 is formed.
  • the swirl element 25 is made for example of a metal sheet, wherein the opening contours are introduced by means of stamping, embossing, erosion and / or laser drilling.
  • FIG. 2 shows a plan view of the swirl element 25 shown along the line II in FIG. 1. It becomes clear that the swirl channel 28 extends radially outward from the central inlet region 27 in order to open tangentially into a swirl chamber 30 that is offset from the valve longitudinal axis 2.
  • the opening contour of the upper layer of the swirl element 25 thus largely corresponds to a 6-shape or 9-shape.
  • the edges of the inlet region 27, the swirl channel 28 and the swirl chamber 30 are beveled, for example, so that for the swirl channel 28 a notched channel or V-shaped geometry can result, which is thus inwardly roof ridge-shaped.
  • the outlet opening 29 running parallel to the valve longitudinal axis 2 projects with an offset to the swirl duct 28.
  • FIGS. 3 and 4 show two further exemplary embodiments of spin elements 25 which are not according to the invention.
  • FIG. 3 shows a second exemplary embodiment of a fuel injection valve with a swirl element 25 having an obliquely extending outlet opening 29 in the same view as FIG. 1, so that the same reference symbols are used for matching components.
  • the outlet opening 29 at an angle ⁇ to the valve longitudinal axis 2, wherein the outlet opening 29 extends inclined so that it is directed in Abspritzides to the valve longitudinal axis 2.
  • the direction of inclination can also be reversed; a skewed formation of the outlet opening 29 is possible.
  • FIG. 4 shows another embodiment of a swirl element 25 with three swirl channels 28 in a plan view. From the central inlet region 27 now go from three swirl channels 28, which extend, for example, by 120 ° to each other radially outward. At each of its ends, each swirl channel 28 opens into a respective swirl chamber 30, from which in turn the swirling fuel can enter an outlet opening 29 and be sprayed from there.
  • the swirl channels 28 can also be distributed unevenly over the circumference.
  • the outlet openings 29 For a desired filling of the combustion chamber with fuel, the outlet openings 29 For example, be aligned with different angles to the valve longitudinal axis 2, wherein, for example, all outlet openings 29 in the downstream direction at angles away from the valve longitudinal axis 2 or are directed towards it.
  • FIG. 5 shows a longitudinal section through a first swirl element 25 produced by multilayer electroplating.
  • the disk-shaped swirl element 25 is formed, for example. of three galvanically deposited layers, layers or layers, which thus follow one another axially when installed.
  • the three layers of the swirl element 25 will hereinafter be referred to according to their function with inlet layer 35, swirl-generating layer 36 and bottom layer 37.
  • the upper inlet layer 35 has a larger outer diameter than the swirl-generating layer 36 and the bottom layer 37.
  • Such an outer contour is expedient for a simple and secure installation of the swirl element 25 into a receiving opening 39 of a receiving part 40 (FIG. 9).
  • the fuel flows into the swirl element 25 centrally via a central inlet region 27, which is designed as a circular inlet opening, in the upper inlet layer 35, which is otherwise a pure material layer. From there, it passes downstream into a central region 42 of the central swirl generation layer 36. From the central region 42, the fuel can flow unimpeded into, for example, four swirl channels 28 in the middle one Swirl generation layer 36 enter.
  • the swirl-generating layer 36 is constructed by electrodeposition in such a way that material regions 43 and opening regions (central region 42, swirl channels 28) alternate in a specific desired structure.
  • FIG. 6 shows a cross-sectional view of the middle swirl generation layer 36 of the swirl element 25 shown in FIG. 5 for a better understanding.
  • the inner material regions 43 are kinked wing-like or formed arcuate or parabolic, so that arise as gaps between the material regions 43, the swirl channels 28 in similarly bent form.
  • the swirl channels 28 are flowed through from the central region 42 to the outside, where the emerging from them fuel due to the channel design enters into an annular flow region 44, partly against the inner wall of an outer material region 43 'bounces and is set in rotation.
  • the annular flow region 44 is thus surrounded by the likewise annular material region 43 'outside.
  • an annular gap in the lower bottom layer 37 adjoins the annular flow region 44 of the middle swirl generation layer 36 as outlet opening 29.
  • the outlet opening 29 is thus outwardly offset from the central inlet region 27 of the swirl element 25.
  • FIGS. 7 and 8 show two further cross-sectional views of a central swirl-producing layer 36 of a multilayer galvanic machining element 25.
  • three inner material regions 43 are provided in the middle swirl-generating layer 36, which in turn are deposited in such a way between them formed swirl channels 28 extend hook-shaped and a fuel flowing through them a swirl component is impressed.
  • the outer annular material region 43 ' is embodied hexagonally on its inner side, for example, so that the annular flow region 44 is bounded by this hexagonal wall.
  • the inner material regions 43 run parallel to the wall sections of the hexagonal inner side of the outer material region 43 '.
  • the material regions 43 of the swirl generation layer 36 of the swirl element 25 according to FIG. 8 are shaped in such a way that approximately the center of each individual outwardly pointing boundary surface 45 of the material regions 43 faces a corner point of the hexagonal inner side of the outer material region 43 '.
  • FIG. 9 shows a further exemplary embodiment of a partially illustrated fuel injection valve with a swirl element 25.
  • This swirl element 25 has a considerable difference compared with all previously described exemplary embodiments.
  • the bottom layer 37 of the swirl element 25 is designed with a smaller outer diameter than the outer diameter of the overlying swirl-generating layer 36 and has no outlet opening 29.
  • an inwardly standing collar 46 is provided on the receiving part 40 at the level of the bottom layer 37 of the swirl element 25. This collar 46 engages under the swirl element 25 on the swirl-generating layer 36 and reaches dimensionally accurate close to the bottom layer 37 zoom. Between the bottom layer 37 and the collar 46 remains a narrow gap which forms the outlet opening 29 as an annular gap.
  • the fastening possibilities of the receiving part 40 and of the swirl element 25 in the receiving part 40 with (laser) welds shown in FIG. 9 are correspondingly also applicable to attachment of the swirl elements 25 of FIGS. 5 to 8.
  • the width of the outlet opening 29 designed as an annular gap can be adjusted so that the outlet opening 29 represents the throttling cross section with respect to the cross section of the swirl channels 28.
  • the flow accumulation that thereby takes place in the flow region 44 and the outlet opening 29 causes the velocity field to be homogenized over the circumference of the outlet opening 29. In this respect, local fuel quantity accumulations and strands can be avoided.
  • the width of the annular gap outlet opening 29 can be increased in relation to the swirl channel widths, so that 28 fuel clusters are caused in the regions of the swirl channels opening into the flow region 44.
  • the z. B. of metal (titanium, steel), silicon, glass or ceramic can be made.
  • At least one auxiliary layer is optionally initially applied to the carrier plate.
  • This is, for example, an electroplating starter layer (eg TiCuTi, CrCuCr, Ni), which is required for the electrical conduction for the subsequent microplating.
  • the application of the auxiliary layer happens z. B. by sputtering or by electroless metal deposition.
  • a photoresist photoresist
  • the thickness of the photoresist should correspond to the thickness of the metal layer which is to be realized in the subsequent electroplating process, ie the thickness of the lower bottom layer 37 of the swirl element 25.
  • the resist layer may consist of one or more layers of a photoimageable film or a liquid resist (polyimide, Photoresist) exist. If, optionally, a sacrificial layer is to be electroplated into the later-produced resist structures, the thickness of the photoresist is to be increased by the thickness of the sacrificial layer.
  • the metal structure to be realized is to be transferred inversely in the photoresist by means of a photolithographic mask. One possibility is to expose the photoresist directly over the mask by means of UV exposure (printed circuit board imagesetter or semiconductor exposure device) (UV deep lithography) and subsequently to develop it.
  • the negative structure ultimately formed in the photoresist to the later layer 37 of the swirl element 25 is galvanically filled with metal (eg Ni, NiCo, NiFe, NiW, Cu) (metal deposition).
  • metal eg Ni, NiCo, NiFe, NiW, Cu
  • the metal adheres to the contour of the negative structure by electroplating, so that the predetermined contours are faithfully reproduced in it.
  • the steps from the optional application of the auxiliary layer must be repeated in accordance with the number of desired layers, so that two (lateral overgrowths) or three electroplating steps are carried out for a three-layer swirl element 25.
  • different metals can be used, but they can only be used in a new electroplating step.
  • the swirl elements 25 After depositing the upper inlet layer 35, the remaining photoresist is dissolved out of the metal structures by wet-chemical stripping. With smooth, passivated carrier plates (substrates), the swirl elements 25 can be detached from the substrate and singulated. For carrier plates with good adhesion of the swirl elements 25, the sacrificial layer is selectively etched away to substrate and swirl element 25, whereby the swirl elements 25 can be lifted off the carrier plate and separated.

Landscapes

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

Claims (11)

  1. Injecteur de carburant pour installations d'injection de carburant de moteurs à combustion interne, en particulier pour l'injection directe de carburant dans une chambre de combustion d'un moteur à combustion interne, comprenant un axe longitudinal de soupape (2), un actionneur (10, 11, 12), une partie de soupape mobile (5, 7) coopérant avec un siège de soupape fixe (22) pour ouvrir et fermer la soupape et qui est formé sur un corps de siège de soupape (16), et comprenant un élément tourbillonnaire (25) en aval du siège de soupape (22) et ayant au moins une zone d'admission (27) ainsi qu'au moins un orifice de sortie (29), et comportant au moins un canal tourbillonnaire (28) en amont de l'orifice de sortie (29), une seule zone d'admission (27) étant prévue centralement dans l'élément tourbillonnaire (25) duquel partent tous les canaux tourbillonnaires (28) traversés par le carburant exclusivement radialement de l'intérieur vers l'extérieur,
    caractérisé en ce que
    les nombreux canaux tourbillonnaires (28) débouchent dans un seul orifice de sortie (29) réalisé sous la forme d'une fente annulaire.
  2. Injecteur de carburant selon la revendication 1,
    caractérisé en ce qu'
    en aval du siège de soupape (22), un orifice de sortie (23) central dans le corps du siège de soupape (16), est dirigé directement sur la zone d'admission (27) de l'élément tourbillonnaire (25).
  3. Injecteur de carburant selon la revendication 1 ou 2,
    caractérisé en ce que
    l'élément tourbillonnaire (25) est en forme de disque.
  4. Injecteur de carburant selon l'une des revendications 1 à 3,
    caractérisé en ce que
    l'élément tourbillonnaire (25) est fixé directement au corps de siège de soupape (16).
  5. Injecteur de carburant selon l'une des revendications précédentes,
    caractérisé en ce que
    les canaux tourbillonnaires (28) ont une géométrie entaillée en forme de V ou de rainures.
  6. Injecteur de carburant selon l'une des revendications 1 à 4,
    caractérisé en ce que
    l'élément tourbillonnaire (25) est fabriqué par un dépôt galvanique de métaux en plusieurs couches.
  7. Injecteur de carburant selon la revendication 6,
    caractérisé en ce que
    l'élément tourbillonnaire (25) présente deux ou trois couches fixées directement les unes sur les autres par adhésion.
  8. Injecteur de carburant selon la revendication 6 ou 7,
    caractérisé en ce que
    la zone d'admission centrale (27) unique est prévue dans une couche d'admission supérieure (35), une zone centrale (42) se poursuit en aval dans une couche consécutive générant les tourbillons (36) de laquelle les canaux tourbillonnaires (28) s'étendent radialement vers l'extérieur, et l'orifice de sortie (29) situé plus à l'extérieur par rapport à la zone d'admission (27) est pratiqué dans une couche de fond inférieure (37).
  9. Injecteur de carburant selon la revendication 8,
    caractérisé en ce que
    la couche de production de tourbillons (36) présente plusieurs zones de matériaux intérieures (43) repliées en formes d'ailes ou qui ont une forme arquée ou parabolique de manière à obtenir des canaux tourbillonnaires (28) de même forme repliée entre les zones de matériaux (43) servant de zones intermédiaires.
  10. Injecteur de carburant selon l'une des revendications 1 à 3,
    caractérisé en ce que
    l'élément tourbillonnaire (25) est appliqué dans un élément de réception (40) fixé au corps de siège de soupape (16).
  11. Injecteur de carburant selon la revendication 10,
    caractérisé en ce que
    l'élément de réception (40) présente un col (46) qui dépasse par rapport à l'élément tourbillonnaire (25) de manière à former une zone intermédiaire entre l'élément tourbillonnaire (25) et le col (46) qui représente l'orifice de sortie (29).
EP01982155A 2000-10-04 2001-09-27 Soupape d'injection de carburant avec element tourbillonnaire Expired - Lifetime EP1228306B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10048935 2000-10-04
DE10048935A DE10048935A1 (de) 2000-10-04 2000-10-04 Brennstoffeinspritzventil
PCT/DE2001/003711 WO2002029244A1 (fr) 2000-10-04 2001-09-27 Soupape d'injection de carburant avec element tourbillonnaire

Publications (2)

Publication Number Publication Date
EP1228306A1 EP1228306A1 (fr) 2002-08-07
EP1228306B1 true EP1228306B1 (fr) 2006-03-15

Family

ID=7658533

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01982155A Expired - Lifetime EP1228306B1 (fr) 2000-10-04 2001-09-27 Soupape d'injection de carburant avec element tourbillonnaire

Country Status (5)

Country Link
US (1) US20030116650A1 (fr)
EP (1) EP1228306B1 (fr)
JP (1) JP2004510915A (fr)
DE (2) DE10048935A1 (fr)
WO (1) WO2002029244A1 (fr)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10154237A1 (de) * 2001-11-07 2003-05-15 Steag Microparts Gmbh Zerstäuber für manuelle Betätigung
US20060073348A1 (en) * 2004-10-06 2006-04-06 General Electric Company Electroplated fuel nozzle/swirler wear coat
JP2006152812A (ja) * 2004-11-25 2006-06-15 Denso Corp 燃料噴射弁およびその製造方法
DE102005023793B4 (de) * 2005-05-19 2012-01-12 Ulrich Schmid Vorrichtung zur Drallerzeugung in einem Kraftstoffeinspritzventil
JP4089915B2 (ja) * 2005-08-09 2008-05-28 三菱電機株式会社 燃料噴射弁
FR2906317A3 (fr) * 2006-09-25 2008-03-28 Renault Sas Injecteur de carburant pour moteur a combustion interne a injection directe
JP4618262B2 (ja) * 2007-03-16 2011-01-26 三菱電機株式会社 燃料噴射弁
JP5253480B2 (ja) * 2010-11-01 2013-07-31 日立オートモティブシステムズ株式会社 燃料噴射弁
DE102010063307A1 (de) 2010-12-16 2012-06-21 Robert Bosch Gmbh Ventil zum Abspritzen eines Fluids
DE102010064268A1 (de) 2010-12-28 2012-06-28 Robert Bosch Gmbh Einspritzventil
DE102011078508B4 (de) * 2011-07-01 2017-11-09 Lechler Gmbh Vollkegeldüse
DE102012211665A1 (de) 2011-08-18 2013-02-21 Robert Bosch Gmbh Ventil für ein strömendes Fluid
JP5961383B2 (ja) * 2012-01-11 2016-08-02 日立オートモティブシステムズ株式会社 燃料噴射弁
JP5875443B2 (ja) * 2012-03-30 2016-03-02 日立オートモティブシステムズ株式会社 燃料噴射弁
DE102012211191A1 (de) 2012-06-28 2014-01-02 Robert Bosch Gmbh Ventil zum Zumessen von Fluid
DE102013201453A1 (de) 2013-01-30 2014-08-14 Robert Bosch Gmbh Ventil zum Zumessen von Fluid
JP5980706B2 (ja) * 2013-03-19 2016-08-31 日立オートモティブシステムズ株式会社 燃料噴射弁
DE102013209272A1 (de) 2013-05-17 2014-11-20 Robert Bosch Gmbh Ventil zum Zumessen von Fluid
JP6239317B2 (ja) * 2013-08-29 2017-11-29 日立オートモティブシステムズ株式会社 燃料噴射弁
DE102013225948A1 (de) * 2013-12-13 2015-06-18 Continental Automotive Gmbh Düsenkopf und Fluid-Einspritzventil
JP2016050552A (ja) * 2014-09-02 2016-04-11 日立オートモティブシステムズ株式会社 燃料噴射弁
JP6448814B2 (ja) * 2015-10-05 2019-01-09 三菱電機株式会社 燃料噴射弁
JP6808356B2 (ja) * 2016-05-25 2021-01-06 日立オートモティブシステムズ株式会社 燃料噴射弁
DE102018203065A1 (de) * 2018-03-01 2019-09-05 Robert Bosch Gmbh Verfahren zur Herstellung eines Injektors
JP6979993B2 (ja) * 2018-08-02 2021-12-15 日立Astemo株式会社 燃料噴射弁
JP6609009B2 (ja) * 2018-08-02 2019-11-20 日立オートモティブシステムズ株式会社 燃料噴射弁
JPWO2021250836A1 (fr) * 2020-06-11 2021-12-16

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB531796A (en) * 1939-08-02 1941-01-10 Scintilla Ltd Fuel injector for internal combustion engines
US4995949A (en) * 1986-03-21 1991-02-26 Extrude Hone Corporation Orifice sizing using chemical, electrochemical, electrical discharge machining, plating, coating techniques
US4923169A (en) * 1987-12-23 1990-05-08 Siemens-Bendix Automotive Electronics L.P. Multi-stream thin edge orifice disks for valves
DE3808396C2 (de) * 1988-03-12 1995-05-04 Bosch Gmbh Robert Kraftstoffeinspritzventil
US5263645A (en) * 1991-11-01 1993-11-23 Paul Marius A Fuel injector system
US5397055A (en) * 1991-11-01 1995-03-14 Paul; Marius A. Fuel injector system
US5570841A (en) * 1994-10-07 1996-11-05 Siemens Automotive Corporation Multiple disk swirl atomizer for fuel injector
DE19703200A1 (de) * 1997-01-30 1998-08-06 Bosch Gmbh Robert Brennstoffeinspritzventil
DE19815775A1 (de) * 1998-04-08 1999-10-14 Bosch Gmbh Robert Drallscheibe und Brennstoffeinspritzventil mit Drallscheibe

Also Published As

Publication number Publication date
EP1228306A1 (fr) 2002-08-07
DE10048935A1 (de) 2002-04-11
JP2004510915A (ja) 2004-04-08
US20030116650A1 (en) 2003-06-26
DE50109233D1 (de) 2006-05-11
WO2002029244A1 (fr) 2002-04-11

Similar Documents

Publication Publication Date Title
EP1228306B1 (fr) Soupape d'injection de carburant avec element tourbillonnaire
EP0914556B1 (fr) Soupape d'injection de carburant
EP1012473B1 (fr) Disque de turbulence et soupape d'injection de carburant equipee de ce dernier
EP1003966B1 (fr) Soupape d'injection de carburant
EP0787255B1 (fr) Disque perfore, notamment pour soupapes d'injection
WO1999053193A1 (fr) Disque diffuseur et soupape d'injection de carburant equipee de ce dernier
EP1336048A1 (fr) Soupape d'injection de carburant
EP0783628B1 (fr) Soupape d'injection de carburant
EP1799996B1 (fr) Soupape d'injection de carburant
DE19815800A1 (de) Brennstoffeinspritzventil
EP1313942B1 (fr) Rondelle de turbulence, notamment pour soupapes d'injection de carburant
EP0783627B1 (fr) Soupape, notamment soupape d'injection de carburant
EP0939858B1 (fr) Disque perfore ou disque de pulverisation et soupape injectrice dotee d'un tel disque perfore ou disque de pulverisation
WO1999053190A1 (fr) Soupape d'injection de carburant et procede de montage de ladite soupape
EP1012471B1 (fr) Soupape d'injection de carburant
EP1402175B1 (fr) Soupape d'injection de carburant
DE10048936A1 (de) Drallscheibe und Brennstoffeinspritzventil mit Drallscheibe
DE19831845A1 (de) Lochscheibe bzw. Zerstäuberscheibe und Einspritzventil mit einer Lochscheibe bzw. Zerstäuberscheibe

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

17P Request for examination filed

Effective date: 20030506

RBV Designated contracting states (corrected)

Designated state(s): DE FR GB IT

17Q First examination report despatched

Effective date: 20050309

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 50109233

Country of ref document: DE

Date of ref document: 20060511

Kind code of ref document: P

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20060626

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

Ref country code: IT

Payment date: 20060930

Year of fee payment: 6

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20061218

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

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070403

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20060927

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20070531

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

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060927

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

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20061002

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

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070927