EP0789810B1 - Soupape d'injection de carburant - Google Patents

Soupape d'injection de carburant Download PDF

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Publication number
EP0789810B1
EP0789810B1 EP96917360A EP96917360A EP0789810B1 EP 0789810 B1 EP0789810 B1 EP 0789810B1 EP 96917360 A EP96917360 A EP 96917360A EP 96917360 A EP96917360 A EP 96917360A EP 0789810 B1 EP0789810 B1 EP 0789810B1
Authority
EP
European Patent Office
Prior art keywords
valve
closing body
armature
needle portion
fuel injection
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
EP96917360A
Other languages
German (de)
English (en)
Other versions
EP0789810A1 (fr
Inventor
Ferdinand Reiter
Assadollah Awarzamani
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 EP0789810A1 publication Critical patent/EP0789810A1/fr
Application granted granted Critical
Publication of EP0789810B1 publication Critical patent/EP0789810B1/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
    • F02M51/0682—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 the body being hollow and its interior communicating with the fuel flow
    • 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
    • F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
    • 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
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49405—Valve or choke making
    • Y10T29/49412—Valve or choke making with assembly, disassembly or composite article making

Definitions

  • the invention is based on a fuel injector according to the genus of claim 1 or claim 6.
  • a fuel injector is already known, the one Includes valve needle, which in turn consists of an anchor, a Valve closing member and an anchor with the z.
  • the enumerated Parts are separate parts represents that only by means of cohesive joining processes, e.g. B. by laser welding. So are at least two more cohesive through the application Joining procedures achieved before. Due to the high thermal loads in processes such as welding or soldering can lead to undesirable deformations on the Valve needle come.
  • the anchor engages around the connecting pipe completely radial and at least partially axial, since that Connection tube in a continuous longitudinal opening of the Anchor is attached.
  • the connecting pipe itself also points a continuous inner longitudinal opening in the fuel can flow towards the valve closing member, which then near the valve closing member by in the wall of the Connecting pipe inserted, radially extending Cross openings emerges.
  • a Known fuel injector which is a valve needle which has anchors from the three components, Valve needle section and valve closing body, wherein the valve needle section is sleeve-shaped and firm is connected to the armature and the valve closing body, and at which the fixed connection between the valve needle section and anchor made non-cohesively by flanging is.
  • the spherical valve closing body is as usual with such valve needles, on the sleeve-shaped Valve needle section integrally through a weld or weld spots attached.
  • JP 63-183266 A is an axially movable valve part Known as a valve needle, the only two connected together Has components. On the one hand, this is one tubular inner core (anchor) and the other around one projectile-like valve closing body attached to the anchor made of plastic. An anchor and one Valve closing body connecting sleeve-shaped Valve needle section is not provided.
  • the anchor points a sleeve shape and has a lower one Receiving area for the valve closing body.
  • the Valve closing body is used to secure it in the Receiving area of the anchor inserted and caulking fixed.
  • valve needle valve closing body and Valve needle section as a connecting part between the anchor and Valve closing body through the application of a non-integral joining process is achieved.
  • Joining processes are particularly well known for this Processes such as pressing or pressing, clamping or squeezing.
  • valve closing body It is advantageous to have one in the valve closing body provide cylindrical recess into which the sleeve-shaped Valve needle section is introduced.
  • a tensioning body In the A tensioning body is inserted, which is at least partially surrounded by the valve closing body.
  • the actual pressing i.e. the making of the solid Connection of valve needle section and valve closing body takes place only after inserting the tensioning body.
  • retractable tool is a on the bracing body axially acting pressure force applied.
  • a tool engagement side Depression knockout
  • the material of the Bracing body is now plastically deformed so that due to the good surface pressure an optimal connection between the valve needle portion and the valve closing body arises.
  • valve closing body Form cylinder section
  • the sleeve-shaped Valve needle section on the cylinder section of the Valve closing body is pushed.
  • the Valve needle section engages in the area of Cylinder section an annular body on which a press tool acts to the firm connection of valve needle section and valve closing body.
  • FIG. 1 shows it Fuel injection valve with an inventive Valve needle
  • Figure 2 shows a first connection type two Components of a valve needle
  • Figure 3 shows a second Connection type of two components of a valve needle
  • Figure 4 a third type of connection of two components of a valve needle
  • FIG. 5 shows a fourth type of connection between two components of one Valve needle
  • Figures 2 and 3 options for Connecting spherical valve closing bodies and sleeve-shaped valve needle sections
  • Fuel injection valve for fuel injection systems from mixture-compressing, spark-ignition internal combustion engines has one surrounded by a magnetic coil 1, as Fuel inlet connector serving tubular core 2, the for example, a constant over its entire length Has outer diameter.
  • stepped bobbin 3 takes a winding of Magnetic coil 1 and allows in connection with the core 2 a compact design of the injection valve in the area of Solenoid coil 1.
  • valve seat support 16 which is fixed, for example is connected to the intermediate part 12.
  • Valve seat carrier 16 runs a longitudinal bore 17, the is formed concentrically with the valve longitudinal axis 10.
  • a valve needle 18 according to the invention with a z. B. tubular or tubular Valve needle section 19 arranged.
  • valve closing body 24 At the downstream end 23 of the valve needle portion 19 is a valve closing body 24 provided, for example at least one largely has spherical outer contour and on its circumference for example, five flats 25 to flow past Fuel are provided.
  • the spherical, for example trained valve closing body 24 is there according to the invention with the tubular valve needle section 19 through the use of a non-material Joining procedure firmly connected.
  • the injection valve is actuated in a known manner Way z. B. electromagnetic.
  • Way z. B. electromagnetic For the axial movement of the Valve needle 18 and thus to open against the spring force a return spring 26 or to close the Injector serves the electromagnetic circuit with the Solenoid 1, the core 2 and an armature 27.
  • a return spring 26 or to close the Injector serves the electromagnetic circuit with the Solenoid 1, the core 2 and an armature 27.
  • armature 27 Der for example tubular anchor 27 is with a Valve closing body 24 facing away from the end 20 of this first embodiment inserted into the anchor 27 Valve needle section 19 fixed by a weld connected and aligned to the core 2.
  • the anchor 27 and connecting the valve closing body 24 Valve needle section 19 forms together with these two Components the valve needle 18th
  • Valve seat carrier 16 In the downstream end of the core 2 facing away Valve seat carrier 16 is in the longitudinal bore 17 cylindrical valve seat body 29, which has a fixed Has valve seat 30, tightly mounted by welding.
  • the valve closing body 24 to Guiding the valve closing body 24 during the Axial movement of the valve needle 18 along the Longitudinal valve axis 10 serves a guide opening 32 of the Valve seat body 29.
  • the valve closing body 24 also cooperates the tapered in the direction of flow Valve seat 30 of the valve seat body 29 together.
  • a cup-shaped, for example trained spray plate 34 firmly and tightly by a z.
  • At least one, for example, four formed by eroding or stamping Spray openings 39 are provided.
  • the insertion depth of the valve seat body 29 with the Spray plate 34 determines the size of the stroke of the Valve needle 18.
  • One end position is the Valve needle 18 when the solenoid 1 is not energized by the Installation of the valve closing body 24 on the valve seat 30 of the Valve seat body 29 set while the other End position of the valve needle 18 when the solenoid coil 1 is excited results from the installation of the armature 27 at the core end 9.
  • Adjustment sleeve 48 is used to adjust the spring preload the return spring 26 resting on the adjusting sleeve 48, which in turn is on the opposite side of the Valve needle section 19 is supported.
  • the injector is largely enclosed with a plastic extrusion 51, starting from the core 2 in the axial direction over the Solenoid coil 1 extends to the valve seat support 16.
  • plastic encapsulation 51 belongs, for example co-molded electrical connector 52.
  • valve needle 18 shows a valve needle 18 as a single component shown enlarged, with only the tubular Valve needle section 19 and valve closing body 24 are shown and on the representation of the armature 27 is waived.
  • the non-integral connection according to the invention firm connection between the valve needle portion 19 and the valve closing body 24 can thus be explained in more detail.
  • a Pipe wall radially penetrating slot 58 is provided z. B. over the entire length of the valve needle portion 19 extends and through which the anchor 27 into one Inner channel 59 of the valve needle section 19 flowing in Fuel into the longitudinal bore 17 and so to the valve seat 30 can reach.
  • a fuel flow in the Injection valve up to the at least one spray opening 39 ensures the fuel in an intake manifold or hosed a cylinder of an internal combustion engine becomes.
  • the slot 58 provides a large area hydraulic flow cross section through which the Fuel very quickly from the inner channel 59 in the Longitudinal bore 17 and the valve seat 30 can flow.
  • other, e.g. B. circular flow openings in the valve needle section 19 be provided, which then the fuel more evenly distribute the scope.
  • the manufacture of the Valve needle section 19 from a sheet metal section a particularly light and simple method of manufacture, the also allows the use of various materials.
  • this part is resilient, so that for the inner Opening of the armature 27, the valve needle section 19 itself and also the valve closing body 24 have relatively rough tolerances can be chosen because of the resilient Compliance of the valve needle section 19 with its two Ends under tension in the other components can be inserted, which also facilitates assembly.
  • valve needle 18 In the case of the valve needle 18 according to the invention, the previously usual, with an integral joining process (e.g. Welding) Valve needle section 19 and valve closing body 24 through a connection with non-cohesive Joining processes, such as pressing, clamping or squeezing, is achieved, replaced.
  • the embodiment of Figure 2 is from one side of the A recess 62 extends circumferentially in the valve closing body 24 generated, which is cylindrical and one Has diameter that is approximately the diameter of the tubular valve needle section 19 corresponds.
  • Manufacturing methods for the recess 62 are available Drilling, milling, eroding or grinding.
  • the deepening 62 extends z. B. in a spherical Valve closing body 24 up to the center of the ball or to the level of a spherical equator 63 with a dash-dot line is indicated.
  • valve needle section 19 In this recess 62 is the Valve needle section 19 with its one end section 64 pushed in, passing through the slot 58 and with it connected spring elasticity is possible Valve needle section 19 by slight compression to bring a slightly smaller diameter and so that To slide in to simplify.
  • the valve needle section 19 can then be relieved and presses with his End portion 64 due to its springback against the inner side wall of the recess 62, while a End surface 65 of the valve needle portion 19 z. B. on one Base 66 of the recess 62 stands up.
  • an additional cylindrical Bracing body 68 made of an easily deformable material (e.g. soft metal) into the valve needle portion 19 of its end face 69 opposite the end face 65 brought in.
  • the cylindrical bracing body 68 has one slightly smaller diameter than the inner channel 59 of the valve needle section 19.
  • the tensioning body slips 68 along the inner channel 59 into the recess 62 of the Valve closing body 24, where it e.g. also on the Recess base 66 rests.
  • the actual pressing, thus establishing the fixed connection of Valve needle section 19 and valve closing body 24 takes place only after inserting the tensioning body 68.
  • a tool 70 axially retractable into the inner channel 59, z. B. in the form of a stamp is on the Bracing body 68 on its end surface 65 facing away Page 72 applied an axially acting compressive force.
  • a recess 75 (Knockout) may be provided, the z. B. centrally located and has a conical contour.
  • the recess 75 in the clamping body 68 can also, depending on the tool shape trough-shaped, funnel-shaped, crater-shaped, channel-shaped or be otherwise trained.
  • valve needle 18 with a non-integral connection of Valve closing body 24 and valve needle section 19 shows the Figure 3.
  • it is for example spherical valve closing body 24 machined on one side so that there is no longer a spherical contour in this area.
  • This processing is done for. B. only on one half of the ball, so that on the other side of the ball starting from the ball equator 63 the spherical shape remains, namely as spherical Section 77, in the specific case as a hemisphere section.
  • This spherical section 77 of the valve closing body 24 accordingly cooperates with the valve seat 30.
  • valve seat 30 cooperating section 77 exactly one hemisphere represents as shown in Figure 3; it can also be bigger or be smaller.
  • contour z On the spherical section 77 opposite side is the contour z. B. means Turning, grinding or eroding so that a extending out of the spherical portion 77 Cylinder section 78 is formed.
  • This cylinder section 78 has approximately a diameter on as the inner channel 59 of the valve needle portion 19, so that the valve needle portion 19 with its one End section 64 very simply onto the cylinder section 78 can be postponed.
  • a firm connection of valve closing body 24 and Valve needle section 19 is achieved by an annular body 82 on the valve needle section 19 at its end section 64 is pushed on and / or pressed on.
  • the ring body 82 can be closed or slotted.
  • valve closing body 24 can also have any other shape have and therefore conical, cylindrical or otherwise be trained.
  • FIGs 4 and 5 show two embodiments of Valve needles 18, in which only the sleeve-shaped Valve needle section 19 and one attached to it Anchor 27 can be seen and on a representation of the on the the armature 27 opposite side of the Valve needle section 19 to be attached Valve closing body 24 is dispensed with.
  • Valve closing body 24 u. a. with the valve needle sections 19 be connected.
  • FIGs 4 and 5 but Rather, it is shown that there is a firm connection of valve needle section 19 and armature 27 also use non-integral joining methods. It when the armature 27 is stepped is particularly advantageous is executed.
  • the tube-like anchor 27 has an inner Longitudinal opening 86, which extends over the entire length of the Anchor 27 extends to u. a. also the fuel supply in To ensure direction to the valve closing body 24.
  • On Upper paragraph 87 in the longitudinal opening 86 serves, for example as a support for the return spring 26.
  • the Longitudinal opening 86 next to paragraph 87 another downstream stage 88 through which the Cross section of the longitudinal opening 86 seen in the flow direction extended.
  • the size of this level 88 is e.g. B. chosen so that the tubular valve needle portion 19 into the inner Longitudinal opening 86 of the armature 27 extends, in this way far that the valve needle portion 19 with its upper End face 69 abuts the step 88 and the diameter the longitudinal opening 86 above the step 88 the diameter of the inner channel 59 of the valve needle section 19 corresponds.
  • the valve needle section 19 is inserted into the longitudinal opening 86 pressed in, d. H.
  • valve needle section 19 can e.g. B. in its upper, surrounded by the anchor 27 Knurled area, whereby further (larger) Tolerances for the fit can be selected.
  • Press connections are based on the friction between the Connection partners due to surface pressure caused by Deformation due to an oversize of the two components to each other. The non-positive Connection can easily pull the tensile forces when opening of the injection valve act on the valve needle 18, take up.
  • valve needle section 19 In the second embodiment of a press connection between valve needle section 19 and armature 27 according to FIG. 5 the sleeve-shaped valve needle section 19 on the Outer contour of the armature 27 is pressed.
  • the outer contour of the Armature 27 extends, for example, in steps, with an outer one Level 89 e.g. B. approximately in the middle of the axial extent the armature 27 is provided. Seen in the direction of flow there is a reduction in the level 89 The outer diameter of the armature 27.
  • the inner longitudinal opening 86 in anchor 27 now extends to the upper paragraph 87 for the return spring 26 with a constant diameter.
  • the Valve needle section 19 is thus on a lower one anchor portion 90 having a reduced outer diameter pressed that the valve needle portion 19 with its upper Face 69 abuts the step 89.
  • the inner channel 59 of the Valve needle section 19 points downstream of armature 27 approximately the same diameter as the outer diameter of the lower anchor section 90.

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

Claims (11)

  1. Soupape d'injection de carburant comportant un mandrin (2) entouré d'une bobine magnétique (1), un siège de soupape fixe (30), une pièce d'ancrage tournée vers le mandrin (2), un pointeau de soupape (18) agissant avec le siège de soupape (30) et formée de la pièce d'ancrage (27), d'un corps de fermeture de la soupape (24) et d'un segment du pointeau de soupape (19) en forme de gousse, le segment du pointeau de soupape (19) se trouvant entre la pièce d'ancrage (27) et le corps de fermeture de la soupape (24), la pièce d'ancrage (27), le segment du pointeau de soupape (19) et le corps de fermeture de la soupape (24) étant fixés directement les uns aux autres et l'assemblage fixe entre le segment du pointeau de soupape (19) et le corps de fermeture de la soupape (24) ne présentant pas d'écoulement du carburant,
    caractérisée en ce que
    le corps de fermeture de la soupape (24) présente une gorge (62), partant de sa surface, dans laquelle le segment du pointeau de soupape (19) s'encastre dans un segment d'extrémité (64) et dans laquelle le segment du pointeau de soupape (19) comporte, dans le sens de la longueur, un canal interne continu (59) dans lequel se trouve un corps haubané (68) entouré au moins en partie par le corps de fermeture de la soupape (24).
  2. Soupape d'injection de carburant selon la revendication 1,
    caractérisée en ce que
    la gorge (62) dans le corps de fermeture de la soupape (24) est cylindrique et qu'elle présente un fond de gorge (66) contre lequel s'appuient le segment du pointeau de soupape (19) et le corps haubané (68).
  3. Soupape d'injection de carburant selon la revendication 2,
    caractérisée en ce que
    le fond (66) de la gorge (62) dans le corps de fermeture de la soupape (24) traverse le centre du corps de fermeture de la soupape de forme sphérique (24) et se situe ainsi au niveau d'un équateur de la bille (63).
  4. Soupape d'injection de carburant selon la revendication 1,
    caractérisée en ce que
    le corps haubané (68) est cylindrique et présente, avant la construction de l'assemblage fixe, un diamètre extérieur extrêmement plus petit que le diamètre du canal intérieur (59) du segment du pointeau de soupape (19).
  5. Soupape d'injection de carburant selon l'une des revendications 1 à 4,
    caractérisée en ce que
    le corps haubané (68) présente un côté supérieur (72) qui sort de la gorge (62) du corps de fermeture de la soupape (24) et est muni d'une gorge (75) dans laquelle un outil (70) peut intervenir dans la construction d'un assemblage fixe.
  6. Soupape d'injection de carburant comportant un mandrin (2) entouré d'une bobine magnétique (1), un siège de soupape fixe (30), une pièce d'ancrage (27) tournée vers le mandrin (2), un pointeau de soupape (18) concourrant avec le siège de soupape (30) et formé de la pièce d'ancrage (27), d'un corps de fermeture de la soupape (24) et d'un segment du pointeau de soupape (19) en forme de gousse, le segment du pointeau de soupape (19) se trouvant entre la pièce d'ancrage (27) et le corps de fermeture de la soupape (24), la pièce d'ancrage (27), le segment du pointeau de soupape (19) et le corps de fermeture de la soupape (24) étant fixés directement les uns aux autres et 1' assemblage fixe entre le segment du pointeau de soupape (19) et le corps de fermeture de la soupape (24) ne présentant pas d'écoulement du carburant,
    caractérisée en ce que
    le corps de fermeture de la soupape (24) présente un segment de cylindre (78) qui s'encastre dans un canal interne (59) d'un segment d'extrémité (64) du segment du pointeau de soupape (19) et en ce qu'un corps de bague (82) est emmanché par pression sur le segment d'extrémité (64).
  7. Soupape d'injection de carburant selon la revendication 6,
    caractérisée en ce que
    le corps de fermeture de la soupape (24) présente un segment circulaire (77) de forme demi-sphérique et en ce que le passage au segment de cylindre (78) s'effectue au niveau d'un équateur de la bille (63).
  8. Soupape d'injection de carburant selon les revendications 6 ou 7,
    caractérisée en ce que
    le corps de la bague (82) entourant le segment d'extrémité (64) du segment du pointeau de soupape (19) est complètement fermé ou présente une fente.
  9. Soupape d'injection de carburant selon les revendications 1 ou 6,
    caractérisée en ce que
    l'assemblage fixe entre le segment du pointeau de soupape (19) et la pièce d'ancrage (27) ne permet pas non plus d'écoulement du carburant.
  10. Soupape d'injection de carburant selon la revendication 9,
    caractérisée en ce que
    le segment du pointeau de soupape (19) est partiellement emmanché dans une ouverture longitudinale (86) de la pièce d'ancrage (27).
  11. Soupape d'injection de carburant selon la revendication 9,
    caractérisée en ce que
    le segment du pointeau de soupape (19) est partiellement emmanché sur le contour extérieur d'un segment (90) de la pièce d'ancrage (27).
EP96917360A 1995-09-06 1996-06-19 Soupape d'injection de carburant Expired - Lifetime EP0789810B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19532865A DE19532865A1 (de) 1995-09-06 1995-09-06 Brennstoffeinspritzventil
DE19532865 1995-09-06
PCT/DE1996/001078 WO1997009528A1 (fr) 1995-09-06 1996-06-19 Soupape d'injection de carburant

Publications (2)

Publication Number Publication Date
EP0789810A1 EP0789810A1 (fr) 1997-08-20
EP0789810B1 true EP0789810B1 (fr) 2003-09-03

Family

ID=7771385

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96917360A Expired - Lifetime EP0789810B1 (fr) 1995-09-06 1996-06-19 Soupape d'injection de carburant

Country Status (8)

Country Link
US (1) US5875975A (fr)
EP (1) EP0789810B1 (fr)
JP (1) JPH10510026A (fr)
CN (1) CN1067744C (fr)
BR (1) BR9606621A (fr)
DE (2) DE19532865A1 (fr)
ES (1) ES2206577T3 (fr)
WO (1) WO1997009528A1 (fr)

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DE19752468A1 (de) * 1997-11-27 1999-06-02 Mercedes Benz Lenkungen Gmbh Drehschieberventil für Servolenkungen und Verfahren zu dessen Herstellung
US6047907A (en) 1997-12-23 2000-04-11 Siemens Automotive Corporation Ball valve fuel injector
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US6372585B1 (en) * 1998-09-25 2002-04-16 Texas Instruments Incorporated Semiconductor device method
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ES2206577T3 (es) 2004-05-16
BR9606621A (pt) 1997-09-30
DE59610702D1 (de) 2003-10-09
WO1997009528A1 (fr) 1997-03-13
US5875975A (en) 1999-03-02
CN1164885A (zh) 1997-11-12
DE19532865A1 (de) 1997-03-13
JPH10510026A (ja) 1998-09-29
EP0789810A1 (fr) 1997-08-20
CN1067744C (zh) 2001-06-27

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