EP1049871B1 - Soupape d'injection de carburant - Google Patents

Soupape d'injection de carburant Download PDF

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Publication number
EP1049871B1
EP1049871B1 EP99953590A EP99953590A EP1049871B1 EP 1049871 B1 EP1049871 B1 EP 1049871B1 EP 99953590 A EP99953590 A EP 99953590A EP 99953590 A EP99953590 A EP 99953590A EP 1049871 B1 EP1049871 B1 EP 1049871B1
Authority
EP
European Patent Office
Prior art keywords
swirl
valve
fuel injection
injection valve
valve according
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
EP99953590A
Other languages
German (de)
English (en)
Other versions
EP1049871A1 (fr
Inventor
Klaus Noller
Martin Müller
Reinhold BRÜCKNER
Jürgen Rapp
Rainer Kocik
Jürgen Schubert
Konrad Funk
Clemens Willke
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
Priority claimed from DE19927196A external-priority patent/DE19927196A1/de
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1049871A1 publication Critical patent/EP1049871A1/fr
Application granted granted Critical
Publication of EP1049871B1 publication Critical patent/EP1049871B1/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
    • 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

Definitions

  • the invention is based on a fuel injector according to the genus of the main claim.
  • the valve needle is with great play from the opening of the stop plate, since the Fuel to be supplied to the valve seat also has this opening must happen.
  • the swirl element are at the bottom Introduced several tangential grooves on the face, that from the outer circumference to a medium one Swirl chamber is enough. By resting the swirl element with its lower end face on the valve seat body the grooves are available as swirl channels.
  • the fuel injector according to the invention with the characteristic features of the main claim has the Advantage that it is in a particularly simple way is inexpensive to manufacture.
  • the disk-shaped swirl element is very simple structured and therefore easy to shape.
  • the Swirl element has the task of To generate rotary motion in the fuel and as possible not to cause disturbing turbulence in the fluid. All other valve functions take over other components of the Valve. So the twist element can be optimally processed become. Since the swirl element is a single component deals with its handling in the manufacturing process no restrictions expected. Compared to Swirl bodies that have grooves or similar on one end face have swirl-generating depressions can in the Twist element with the simplest of means an inner one Opening area can be created that extends across the entire extends axial thickness of the swirl element and from one outer peripheral edge area is surrounded.
  • the guide element is also easy to manufacture.
  • the guide element advantageously serves with a inner guide opening of the leadership of the projecting Valve needle.
  • the modular structure of the elements and the associated Separation of functions has the advantage that the individual Components can be designed very flexibly, so that by simply varying an element different sprays to be sprayed (spray angle, static spray quantity) can be generated. You can also easily additional spraying or fastening elements are provided his. Despite the variable structure of the individual Elements enables the fixed connection of all elements among themselves a very easy handling of this Valve body.
  • Embodiments of the invention are in the drawing shown in simplified form and in the following Description explained in more detail.
  • 1 shows a first Embodiment of a fuel injector
  • figure 2 shows a second example of a fuel injector, only the downstream valve end is shown
  • Figure 3 a first leadership and seating area as enlarged Detail from Figure 2
  • Figure 4 a second guide and Seating area
  • Figure 5 shows a third leadership and Seating area
  • Figure 6 a fourth guide and Seating area
  • Figure 7 a fifth leadership and Seating area
  • Figure 8 a sixth leadership and Seating area
  • Figure 9 a seventh leadership and Seating area
  • Figure 10 a swirl element
  • Figure 11 a first Guide element
  • Figure 12 shows a second guide element
  • Figure 13 the swirl element according to FIG. 10 and the guide element according to FIG.
  • FIG. 16 a plan view of an eighth guidance and seating area
  • Figure 17 is a section along the line XVII-XVII in Figure 16
  • FIG. 18 a ninth guidance and seating area
  • Figure 19 shows a tenth leadership and seating area.
  • FIG. 1 for example, as a Embodiment shown electromagnetically actuatable valve in the form of an injection valve for Fuel injection systems from spark ignition systems
  • Internal combustion engines have one of a magnetic coil 1 at least partially surrounded, as the inner pole of one Serving magnetic circuit, tubular, largely hollow cylindrical core 2.
  • the fuel injector is particularly suitable as a high pressure injector for direct injection of fuel into a combustion chamber Internal combustion engine.
  • a tiered one Spool 3 made of plastic takes a winding Magnetic coil 1 and allows in connection with the core 2 and an annular, non-magnetic, from the Magnetic coil 1 partially surrounded intermediate part 4 with a L-shaped cross section a particularly compact and short Structure of the injection valve in the area of the solenoid coil 1.
  • the core 2 of the magnetic circuit also serves as Fuel inlet port, the longitudinal opening 7 a Represents fuel supply channel.
  • an outer metal (e.g. ferritic) housing part 14 which as the outer pole or outer guide element closes the magnetic circuit and the Solenoid 1 completely at least in the circumferential direction surrounds.
  • a fuel filter 15 is provided for the Filtering out such fuel components ensures that due to their size in the injector clogging or Can cause damage.
  • the fuel filter 15 is z. B. fixed by pressing in the core 2.
  • the core 2 forms with the housing part 14 that on the inlet side End of the fuel injector, with the top Housing part 14, for example in the axial direction seen just downstream via the magnetic coil 1 extends beyond.
  • the upper housing part 14 closes tight and tight to a lower tubular housing part 18, the Z. B. consists of an axially movable valve part an armature 19 and a rod-shaped valve needle 20 or encloses an elongated valve seat support 21 or receives.
  • the two housing parts 14 and 18 are, for. B. with a circumferential weld seam firmly connected.
  • the valve seat support 21 has an internal one over its entire axial extent Through opening 24 which is concentric with the Longitudinal valve axis 8 runs.
  • valve seat carrier 21 With its lower end 25, which also the downstream completion of the whole Fuel injector, surrounds the Valve seat carrier 21 in the through opening 24 fitted disc-shaped valve seat element 26 with a narrowing frustoconically downstream Valve seat surface 27.
  • the through opening 24 is the z.
  • This, for example, spherical or partial spherical or rounded or conical tapered valve closing section 28 acts in a known manner Way with that provided in the valve seat member 26 Valve seat surface 27 together.
  • the axially movable Valve part can be in addition to the version shown with an anchor 19, valve needle 20 and valve closing section 28 also completely otherwise as an axially movable valve closing body, e.g. be designed as a flat anchor. Downstream of the Valve seat surface 27 is at least in valve seat element 26 an outlet opening 32 is introduced for the fuel.
  • the injection valve is actuated in a known manner Way electromagnetic.
  • a piezo actuator as excitable Actuator is also conceivable.
  • actuation via a controlled pressure-loaded piston also serves for the injection valve the magnet coil 1, the core 2, the housing parts 14 and 18 and the anchor 19.
  • the anchor 19 is with the Valve closing section 28 facing away from the end of the valve needle 20 z. B. connected by a weld and on the core 2nd aligned.
  • valve seat support 21 On the armature 19 facing end provided guide opening 34 and on the other hand, an upstream of the valve seat member 26 arranged disc-shaped guide element 35 with a dimensionally accurate guide opening 55.
  • the anchor 19 is during its axial movement surrounded by the intermediate part 4.
  • a Swirl element 47 arranged so that all three elements 35, 47 and 26 lie directly on top of each other and Find valve seat bracket 21.
  • the three disc-shaped elements 35, 47 and 26 firmly bonded together.
  • Pressed or screwed adjusting sleeve 38 is used Setting the spring preload using a centering piece 39 with its upstream side on the adjusting sleeve 38 adjacent return spring 33, which with their opposite side is supported on the anchor 19.
  • At anchor 19 are one or more bore-like flow channels 40 provided through which the fuel from the longitudinal opening 7th in the core 2 from downstream of the flow channels 40 trained connecting channels 41 near the guide opening 34 in the valve seat support 21 into the through opening 24 can reach.
  • the stroke of the valve needle 20 is determined by the installation position of the Valve seat element 26 predetermined. A final position of the Valve needle 20 is through when the magnet coil 1 is not energized the installation of the valve closing section 28 on the Valve seat surface 27 of the valve seat element 26 fixed, while the other end position of the valve needle 20 at excited magnet coil 1 by the system of the armature 19 on the downstream end of the core 2 results.
  • the Surfaces of the components in the latter stop area are chrome-plated, for example.
  • the electrical contacting of the magnetic coil 1 and thus their excitation takes place via contact elements 43, which are still outside of the bobbin 3 with a Plastic extrusion 44 are provided.
  • the Plastic encapsulation 44 can also be used for other Components (e.g. housing parts 14 and 18) of the Extend fuel injector. From the Plastic extrusion 44 runs an electrical Connection cable 45, through which the energization of the solenoid 1 he follows. The plastic extrusion 44 protrudes through the in Upper housing part 14 interrupted in this area.
  • FIG 2 shows a second embodiment of a Fuel injector, with only the downstream Valve end is shown.
  • the valve seat support 21 in Area of the guide opening 34 several axially parallel extending connecting channels 41 are provided.
  • To be safe To allow flow into the valve seat support 21 is the passage opening 24 with a larger diameter trained, while the valve seat support 21 thin-walled is executed.
  • the leadership and seating area is a cutout shown in Figure 2 again in a modified scale to this valve area designed according to the invention better clarify.
  • the in the spray end 25 of the Valve seat support 21 in its through opening 24 The proposed leadership and seating area is in the figure 3 shown and for all other subsequent ones embodiments according to the invention in principle three axially successive, disc-shaped, functionally separate elements formed that are fixed to each other are connected.
  • the guide element 35, the very flat Swirl element 47 and valve seat element 26 follow in the downstream direction successively the guide element 35, the very flat Swirl element 47 and valve seat element 26.
  • the valve seat element 26 partially has one Outside diameter on that it taut with little play in a lower portion 49 of the through opening 24 of the Valve seat support 21 downstream one in the Through opening 24 provided stage 51 can be fitted can.
  • the guide element 35 and the swirl element 47 have, for example, a slightly smaller one Outside diameter as the valve seat member 26.
  • the guide element 35 has a dimensionally accurate inner Guide opening 55 through which the valve needle 20th moved through during their axial movement. From the outside The guide element 35 has a circumference over the circumference distributes several recesses 56, one of which Fuel flow on the outer periphery of the guide member 35 along into the swirl element 47 and further in the direction to the valve seat surface 27 is guaranteed. Based on the figures 10 to 15 become embodiments of the swirl element 47 or of the guide member 35 described in more detail.
  • the three elements 35, 47 and 26 lie directly with theirs respective end faces to each other and already exist their assembly in the valve seat support 21 firmly together connected before.
  • the solid connection of the individual disc-shaped elements 35, 47 and 26 takes place cohesively on the outer circumference of the elements 35, 47, 26, welding or bonding are preferred joining methods.
  • welding spots or short weld seams 60 in the peripheral areas provided in which the guide element 35 none Has recesses 56.
  • the entire multi-disc valve body is, for example inserted into the through opening 24 until the upper end face 59 of the guide element 35 on the step 51 is applied.
  • the valve body is attached e.g. by means of a weld seam 61 achieved by means of a laser lower end of the valve between valve seat element 26 and valve seat bracket 21.
  • Valve seat element 26 has a circumferential flange 64, which reaches under the downstream end of the valve seat support 21.
  • the top 65 of the circumferential flange 64 is in one Clamping with the guide opening 55 and Valve seat surface 27 ground. The insertion of the three-disc valve body takes place until the Top 65 of the flange 64 at the end 25 of the Valve seat support 21.
  • the Exit opening 32 is e.g. inclined to Valve longitudinal axis 8 introduced, wherein it downstream in a convexly curved spray region 66 ends.
  • FIG. 5 essentially corresponds the example shown in Figure 4, the essential Difference is that now an additional fourth disk-shaped spraying element 67 in the form of a Spray plate is provided, which is the outlet opening 32 has.
  • the spray 67 and that Valve seat element 26 are e.g. via a means Laser welding achieved weld seam 68 firmly with one another connected, the weld being in a ring shape circumferential recess 69 is made.
  • Next to the Laser welding is also bonding or resistance welding et al suitable joining methods for this connection.
  • both components are fixed connected to each other (weld 61).
  • the valve seat element 26 has wear protection reasons has a high carbon content and is highly rewarded. from that the weldability is less good.
  • the Spraying element 67 is made of a weldable one Material made.
  • the weld 68 must also only be slightly resilient.
  • the outlet opening 32 can inexpensive late in the manufacturing process e.g. by drilling be introduced. At the entrance to the exit opening 32 there is a sharp hole edge due to the turbulence in the flow are generated, from which an atomization in particularly fine droplets result.
  • valve seat member 26 now an obliquely inclined to the valve longitudinal axis 8 Exit opening 32 on.
  • the outlet opening 32 is divided for example, in a first inclined cone Section 71 and a downstream second inclined cylindrical portion 72, the Section 72 inclination to the longitudinal valve axis 8 is greater than that of section 71 to the valve longitudinal axis 8.
  • the valve seat element 26 has a central convex domed spray area 66, in which the outlet opening 32 ends. With such a design of the outlet opening 32 the fuel is particularly low in turbulence Seat area deflected into the outlet opening 32. Thereby the flow scatter can be minimized.
  • a completely frustoconical outlet opening 32 is also conceivable as an alternative.
  • the Valve seat element 26 has one on its outer circumference Paragraph 75 on that of the annular Fastening element 74 is encompassed.
  • a weld 68 is the fastener 74 from a well weldable Material firmly connected to the valve seat member 26.
  • the Valve seat member 26 has e.g. between the valve seat surface 27 and the outlet opening 32 a cylindrical section 76. This creates a pronounced inner spray hole edge 77 at the transition to the outlet opening 32, at which a sharp The flow is diverted.
  • the resulting Turbulence ensures a particularly fine atomization of the Fuel.
  • FIG 8. A slightly modified from the example of Figure 4 Embodiment is shown in Figure 8.
  • the main difference is one on the outer circumference of the valve seat element 26 above the top 65 of the Flange 64 provided circumferential groove 78.
  • grinding tool e.g. a grinding wheel
  • On chamfers at the immediate end 25 of the valve seat carrier 21 can thus be dispensed with.
  • Figure 9 shows an example comparable to Figure 7, wherein instead of the annular fastener 74 sleeve-shaped fastener 74 'is used, the with a bottom portion 79 fixed to the valve seat member 26 and with a jacket section 80 fixed to the Valve seat support 21 is connected.
  • the sleeve-shaped Fastening element 74 ' is made of a well weldable Material made.
  • the highly stressed weld 61 is thus attached to two easily weldable materials.
  • the Weld seam 68 is only slightly loaded because of the Bottom portion 79 of the valve seat element 26 partially embraces.
  • FIG 10 is a between the guide member 35 and Valve seat element 26 embedded swirl element 47 as Individual component shown in a top view.
  • the Swirl element 47 can be inexpensively, for example, by means of Stamping, wire EDM, laser cutting, etching or others known methods from a sheet or by galvanic Deposition.
  • an inner opening area 90 is formed, which over the entire axial thickness of the swirl element 47 extends.
  • the Opening area 90 is surrounded by an inner swirl chamber 92, through which the valve closing section 28 of the valve needle extends 20 extends through, and from a variety of in the Swirl chamber 92 opening swirl channels 93 are formed.
  • the Swirl channels 93 open tangentially into the swirl chamber 92 and stand with their ends 95 facing away from the swirl chamber 92 not with the outer circumference of the swirl element 47 in Connection. Rather, there remains between the as Inlet pockets formed ends 95 of the swirl channels 93 and the outer circumference of the swirl element 47 a circumferential Border area 96.
  • the swirl chamber 92 becomes inside of the valve needle 20 (valve closing section 28) and outwards through the wall of the opening area 90 of the Swirl elements 47 limited.
  • the swirl channels 93 in the swirl chamber 92 get the Fuel imprinted an angular momentum, which in the further Flow is maintained up to the outlet opening 32.
  • the centrifugal force makes the fuel hollow-conical hosed.
  • the ends 95 of the swirl channels 93 serve as Collecting bags that cover a large area for form low-turbulence inflow of fuel. After Flow deflection occurs slowly and the fuel low turbulence into the tangential swirl channels 93 a, whereby a largely trouble-free swirl can be generated is.
  • Figures 11 and 12 are two embodiments of Guide elements 35 removable, but in many other design variants can also be used.
  • about the guide elements 35 have their outer circumference alternating recesses 56 and protruding tooth-shaped Areas 98.
  • the tooth-shaped areas 98 can sharp-edged ( Figure 12) or rounded ( Figure 11) be formed.
  • Figure 12 With a symmetrical formation of the Areas 98 and the recesses 56 can Guide elements 35 are installed on both sides.
  • the Manufacturing of the guide elements 35 takes place e.g. by Punching.
  • the Recess base 99 inclined so that the Recess base 99 advantageously perpendicular to the Axes of the swirl channels 93 of the underlying one Swirl elements 47 run.
  • FIG. 13 shows a top view of the swirl element 47 according to FIG 10 and the guide element 35 arranged above it 12 in the assembled state, which clearly is that the ends 95 of the swirl channels 93 as Inlet pockets for the fuel just below the Recesses 56 are arranged between the areas 98.
  • the ends 95 of the swirl channels 93 of the swirl element 47 and the Recesses 56 of the guide element 35 are in their Rotation exactly aligned to each other.
  • the swirl element 47 has, for example, the same number of swirl channels 93 95 centering areas 100 in the peripheral region of the ends have a slightly larger outer diameter than that Remaining areas 101 of swirl element 47. Over the circumference seen, the increases alternate representing centering areas 100 with the recessed Remaining areas 101. The welding 60 is to the recessed remaining areas 101 of swirl element 47 performed. With the centering areas 100 there is a Centering of the entire valve body in the lower section 49 of the passage opening 24 in the valve seat carrier 21.
  • the swirl element 47 can also be the areas 98 of the Guide element 35 as slightly radially protruding Centering areas 100 'may be formed.
  • Figure 15 are a Swirl element 47 according to FIG. 10 and a guide element 35 similar to Figure 11, one above the other in the assembled State shown, the guide member 35 with several centering areas 100 'distributed over the circumference is executed.
  • On the guide element 35 e.g. everyone second area 98 a radially slightly larger Extent than the intermediate areas 98, where the centering areas 100 'slightly above the Project outside diameter of the swirl element 47 so that centering in the valve seat support 21 is made possible.
  • Figures 16 and 17, 18 and 19 are three more Illustrated embodiments that differ from those in the Figures 1 to 15 designs shown thereby distinguish that the guide element 35 with a smaller outside diameter than the downstream one Swirl element 47 is formed, whereby different Possibilities for the cohesive connection of Guide element 35, swirl element 47 and valve seat element 26 result.
  • the seat area Guide element 35 with such an outer diameter executed that the ends designed as inlet pockets 95 of the swirl channels 93 are at least partially exposed.
  • On this way can be geared to a Guide element 35 with recesses 56 (see Figures 11 and 12) can be dispensed with, since the fuel is now on the outside Extent directly into the ends 95 of the swirl channels 93 can flow in.
  • the guide element 35 is due to its simple geometry very inexpensive e.g. by punching formable. In an advantageous manner, the in the previously described exemplary embodiments necessary Alignment of the rotational position of the guide element 35 for Swirl element 47.
  • the guide element 35 only provides a cover for the swirl element 47, which is independent of position can be attached to the swirl channels 93.
  • the ends 95 of the swirl channels 93 are also circumferentially extending extensions 103 so large executed that in the area of each end 95 Weld spot or a short weld 60 are set can.
  • the weld spot or weld seam becomes 60 made where the outer edge of the Guide element 35 exactly over the boundary wall of the Extension 103 of the end 95 of the respective swirl channel 93 stands, with which a particularly simple and inexpensive firm integral connection of guide element 35, Swirl element 47 and valve seat element 26 can be achieved.
  • the weld spots or welds 60 as Weld-throughs include all three elements 35, 47 and 26, so that there are very reliable connections.
  • valve seat member 26 which as cylindrical component without shoulders on the outer contour manufactured and is therefore very stiff against bending. With his top 65 trained without heel Valve seat element 26 in its radial outer area on Valve seat support 21 so that to achieve a fixed Connection of the two components very easily the weld 61 is attachable.

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  • 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 (19)

  1. Injecteur de carburant pour des installations d'injection de carburant de moteur thermique notamment pour l'injection directe de carburant dans la chambre de combustion d'un moteur thermique comportant un élément d'actionnement excité de l'extérieur, un corps d'obturation de soupape mobile axialement le long d'un axe longitudinal de soupape, et qui coopère avec un siège de soupape fixe pour ouvrir et fermer la soupape, ce siège étant réalisé sur un élément formant siège de soupape, avec un élément de rotation en forme de disque prévu directement en amont du siège de soupape ainsi qu'un élément de guidage réalisé en amont de l'élément de rotation, cet élément de guidage ayant une ouverture de guidage intérieure pour guider le corps d'obturation de soupape qui traverse l'orifice de guidage,
    caractérisé en ce que
    l'élément de guidage (35), l'élément de rotation (47) et l'élément formant siège à soupape (26) sont reliés solidairement par une liaison par la matière.
  2. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    l'élément de rotation (47) possède une zone d'ouverture intérieure (90) avec plusieurs canaux de rotation (93) s'étendant complètement dans toute l'épaisseur axiale de l'élément de rotation (47), les canaux de rotation (93) n'étant pas reliés par une zone marginale périphérique (96) à la périphérie extérieure de l'élément de rotation (47).
  3. Injecteur de carburant selon la revendication 2,
    caractérisé en ce que
    la zone d'ouverture intérieure (90) de l'élément de rotation (47) est formée par estampage.
  4. injecteur de carburant selon la revendication 2 ou 3,
    caractérisé en ce que
    la zone d'ouverture intérieure (90) est formée d'une chambre de rotation intérieure (92) et de plusieurs canaux de rotation (93) débouchant dans la chambre de rotation (92).
  5. Injecteur de carburant selon la revendication 4,
    caractérisé en ce que
    les canaux de rotation (93) ont des extrémités (95) éloignées de la chambre de rotation (92), ces extrémités ayant en tant que poches d'entrée, une section plus grande que le reste des canaux de rotation (93).
  6. Injecteur de carburant selon la revendication 1.
    caractérisé en ce que
    l'élément de guidage (35) présente des zones (98) qui viennent en saillie en forme de dents, alternées à la périphérie extérieure avec des cavités (56) dans l'intervalle.
  7. Injecteur de carburant selon les revendications 5 et 6,
    caractérisé en ce que
    l'élément de rotation (47) est prévu en aval de l'élément de guidage (35) de façon que les extrémités (95) des canaux de rotation (93) se trouvent directement en dessous des cavités (56) de l'élément de guidage (35) pour permettre le passage du carburant.
  8. injecteur de carburant selon la revendication 6 ou 7,
    caractérisé en ce que
    les cavités (56) ont un fond (99) perpendiculaire ou incliné par rapport au flanc des zones (98).
  9. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    l'élément de guidage (35) a un diamètre extérieur plus petit que l'élément de rotation (47) et la liaison solidaire par la matière est réalisée au niveau de la périphérie extérieure de l'élément de guidage (35).
  10. Injecteur de carburant selon les revendications 5 et 9,
    caractérisé en ce que
    les extrémités (95) des canaux de rotation (93) sont réalisées de façon que chaque fois une paroi de limitation se trouve en aval, exactement sous le bord extérieur de l'élément de guidage (35) pour avoir dans cette zone une liaison par la matière.
  11. Injecteur de carburant selon l'une des revendications précédentes,
    caractérisé en ce que
    l'élément de guidage (35), l'élément de rotation (47) et l'élément formant siège de soupape (26) sont placés ensemble dans un orifice traversant (24) d'un support de siège de soupape (21) pour être ainsi entourés au moins partiellement par ce support de siège de soupape (21).
  12. Injecteur de carburant selon la revendication 11,
    caractérisé en ce que
    l'orifice traversant (24) possède un épaulement (51) qui se poursuit dans la direction aval par un segment inférieur (49) de plus grand diamètre recevant les éléments (35, 26, 47).
  13. Injecteur de carburant selon la revendication 12,
    caractérisé en ce que
    l'élément de guidage (35) possède une face frontale supérieure (59) par laquelle l'élément de guidage (35) s'applique en partie contre le gradin ou épaulement (51) du support formant siège à soupape (21).
  14. Injecteur de carburant selon l'une des revendications 11 à 13,
    caractérisé en ce que
    l'élément formant siège de soupape (26) est relié solidairement au support de siège de soupape (21) par un cordon de soudure périphérique (61).
  15. Injecteur de carburant selon la revendication 14,
    caractérisé en ce que
    l'élément formant siège à soupape (26) comporte une bride (64) munie de la liaison solidaire avec le support formant siège à soupape (21).
  16. Injecteur de carburant selon la revendication 11,
    caractérisé en ce que
    l'élément formant siège de soupape (26) comporte un élément d'éjection (67) relié solidairement à celui-ci et qui comporte au moins un orifice de sortie (32) en étant relié solidairement au support de siège de soupape (21).
  17. Injecteur de carburant selon la revendication 11,
    caractérisé par
    un élément de fixation (74, 74') relié solidairement à l'élément formant siège de soupape (26) et cet élément de fixation est lui-même relié solidairement au support formant siège de soupape (21).
  18. injecteur de carburant selon les revendications 11 ou 12,
    caractérisé en ce que
    l'élément de rotation (47) et/ou l'élément de guidage (35) ont des zones de centrage (100, 100') à leur périphérie extérieure, ces zones servant au centrage des éléments (35, 47, 26) dont l'orifice traversant (24).
  19. injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    la liaison solidaire entre l'élément de guidage (35), l'élément de rotation (47) et l'élément formant siège de soupape (26) est réalisée par soudage, brasage, nouage ou collage.
EP99953590A 1998-08-27 1999-08-25 Soupape d'injection de carburant Expired - Lifetime EP1049871B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19838949 1998-08-27
DE19838949 1998-08-27
DE19927196A DE19927196A1 (de) 1998-08-27 1999-06-15 Brennstoffeinspritzventil
DE19927196 1999-06-15
PCT/DE1999/002657 WO2000012891A1 (fr) 1998-08-27 1999-08-25 Soupape d'injection de carburant

Publications (2)

Publication Number Publication Date
EP1049871A1 EP1049871A1 (fr) 2000-11-08
EP1049871B1 true EP1049871B1 (fr) 2003-07-30

Family

ID=26048420

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99953590A Expired - Lifetime EP1049871B1 (fr) 1998-08-27 1999-08-25 Soupape d'injection de carburant

Country Status (9)

Country Link
US (1) US6296199B1 (fr)
EP (1) EP1049871B1 (fr)
JP (1) JP4593784B2 (fr)
CN (1) CN1104555C (fr)
AU (1) AU741787B2 (fr)
BR (1) BR9906683A (fr)
ES (1) ES2205895T3 (fr)
RU (1) RU2227226C2 (fr)
WO (1) WO2000012891A1 (fr)

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DE10046305A1 (de) * 2000-09-19 2002-04-04 Bosch Gmbh Robert Brennstoffeinspritzventil
DE10049034B4 (de) * 2000-10-04 2005-08-04 Robert Bosch Gmbh Brennstoffeinspritzventil
DE10055513B4 (de) * 2000-11-09 2006-03-09 Robert Bosch Gmbh Brennstoffeinspritzventil
DE10063259A1 (de) * 2000-12-19 2002-07-11 Bosch Gmbh Robert Brennstoffeinspritzventil
DE10103051B4 (de) * 2001-01-24 2006-07-27 Robert Bosch Gmbh Brennstoffeinspritzventil
ITBO20010279A1 (it) * 2001-05-08 2002-11-08 Magneti Marelli Spa Iniettore di carburante con attuatore piezoelettrico alloggiato in una camera isolata
ITBO20010482A1 (it) * 2001-07-27 2003-01-27 Magneti Marelli Powertrain Spa Corpo valvola per un iniettore di carburante
US6899290B2 (en) * 2002-06-24 2005-05-31 Delphi Technologies, Inc. Fuel swirler plate for a fuel injector
US7021570B2 (en) * 2002-07-29 2006-04-04 Denso Corporation Fuel injection device having injection hole plate
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US7168637B2 (en) * 2004-11-05 2007-01-30 Visteon Global Technologies, Inc. Low pressure fuel injector nozzle
US7051957B1 (en) * 2004-11-05 2006-05-30 Visteon Global Technologies, Inc. Low pressure fuel injector nozzle
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US7185831B2 (en) * 2004-11-05 2007-03-06 Ford Motor Company Low pressure fuel injector nozzle
US7137577B2 (en) * 2004-11-05 2006-11-21 Visteon Global Technologies, Inc. Low pressure fuel injector nozzle
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US8517284B2 (en) 2009-05-13 2013-08-27 Caterpillar Inc. System and method for internal cooling of a fuel injector
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JP2012026466A (ja) * 2010-07-20 2012-02-09 Advics Co Ltd 電磁弁
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CN103256106B (zh) * 2012-12-28 2015-12-23 湖南吉利汽车部件有限公司 无气动辅助scr喷射系统
JP6080087B2 (ja) * 2014-02-28 2017-02-15 株式会社デンソー 燃料噴射弁
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CN107956619B (zh) * 2017-11-24 2020-07-07 广西卡迪亚科技有限公司 一种单孔雾化喷油器及其旋流雾化结构
CN107725243A (zh) * 2017-11-24 2018-02-23 广西卡迪亚科技有限公司 一种单孔雾化喷油器及其后置雾化结构
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Also Published As

Publication number Publication date
JP4593784B2 (ja) 2010-12-08
US6296199B1 (en) 2001-10-02
RU2227226C2 (ru) 2004-04-20
CN1275185A (zh) 2000-11-29
CN1104555C (zh) 2003-04-02
AU741787B2 (en) 2001-12-06
JP2002523682A (ja) 2002-07-30
AU1028700A (en) 2000-03-21
EP1049871A1 (fr) 2000-11-08
WO2000012891A1 (fr) 2000-03-09
BR9906683A (pt) 2000-10-17
ES2205895T3 (es) 2004-05-01

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