EP0934459B1 - Brennstoffeinspritzventil - Google Patents

Brennstoffeinspritzventil Download PDF

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Publication number
EP0934459B1
EP0934459B1 EP98947359A EP98947359A EP0934459B1 EP 0934459 B1 EP0934459 B1 EP 0934459B1 EP 98947359 A EP98947359 A EP 98947359A EP 98947359 A EP98947359 A EP 98947359A EP 0934459 B1 EP0934459 B1 EP 0934459B1
Authority
EP
European Patent Office
Prior art keywords
valve seat
swirl
fuel injection
valve
opening
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
EP98947359A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0934459A1 (de
Inventor
Martin Müller
Stefan Herold
Jochen Riefenstahl
Reinhold BRÜCKNER
Dirk Fischbach
Andreas Eichendorf
Martin BÜHNER
Rainer Norgauer
Jürgen VIRNEKÄS
Peter Schramm
Hans Weidler
Christian Preussner
Thomas Keil
Oliver Kirsten
Ottmar Martin
Wolfgang Leuschner
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 EP0934459A1 publication Critical patent/EP0934459A1/de
Application granted granted Critical
Publication of EP0934459B1 publication Critical patent/EP0934459B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • 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
    • 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
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
    • F02M61/12—Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies
    • 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.
  • EPC is already a Fuel injector known at its downstream End has a disc-shaped swirl element.
  • the valve has an electromagnetic circuit that actuates an axially movable along a longitudinal valve axis Valve needle is used.
  • One molded on the valve needle Valve closing section acts to open and close the Valve with a fixed valve seat.
  • Upstream of the The disk-shaped swirl element is arranged on the valve seat, wherein the swirl element has an inner opening area with a middle swirl chamber and with several in the swirl chamber has swirl channels.
  • the inner opening area extends completely over the entire axial thickness of the Swirl element.
  • the swirl channels start at enlarged Inlet areas and are by a peripheral edge area spaced from the outer periphery of the swirl element.
  • the fuel injector according to the invention with the characteristic features of the main claim has the Advantage that it is particularly simple is inexpensive to manufacture.
  • the disc-shaped Swirl element is very simply structured and therefore easily formable.
  • the swirl element only has the task to produce a swirling or rotating movement in the fuel and not as disturbing as possible turbulence in the fluid let develop. All other valve functions take over other components of the valve. So it can Twist element can be processed optimally. Since it is Swirl element is a single component, are in its Handling in the manufacturing process no restrictions expect.
  • swirl element according to the invention Compared to swirl bodies on one Frontal grooves or similar swirl-producing depressions can have in the swirl element according to the invention with an inner opening area is created by the simplest means be that over the entire axial thickness of the Swirl elements extends and from an outer circumferential Edge area is surrounded.
  • the Swirl element on otherwise more complicated to insert Grooves, trenches, notches, grooves or channels are dispensed with.
  • the guide element is also easy to manufacture. Especially the guide element advantageously serves only the Leadership of the projecting in a guide opening Valve needle. So there is a clear separation of functions the other two downstream elements.
  • 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 simple variation of an element different sprays to be sprayed (spray angle, static spray quantity) can be generated.
  • a desired extension of the Swirl channels achieved by bending or kinking.
  • the hook-shaped bent ends of the swirl channels 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 in the actual tangential swirl channels a, whereby a largely trouble-free swirl can be generated is.
  • 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 first guide and seating area as an enlarged one Section of Figure 1
  • Figure 3 an inventive Swirl element
  • Figure 4 shows a second guide and 5
  • Figure 6 shows a third guide and Seating area as an enlarged detail from FIG. 5
  • 7 shows a fourth guide and seating area
  • FIG. 8 a fifth guidance and seating area
  • FIG. 9 one sixth leadership and seating area.
  • electromagnetically actuatable valve in the form of an injection valve for Fuel injection systems from mixture-compressing, spark-ignited internal combustion engines has one of one Magnetic coil 1 at least partially surrounded, as an inner pole of a magnetic circuit, largely tubular 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. B. rod-shaped, a largely circular Cross-sectioned valve needle 20 arranged on a valve closing section 28 at its downstream end having.
  • This, for example, spherical or partial spherical or as shown in all figures conically tapered valve closing section 28 acts in known manner with that provided in the valve seat member 26 Valve seat surface 27 together.
  • outlet opening 32 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.
  • the electromagnetic circuit with the magnetic coil 1, the core 2, the housing parts 14 and 18 and the armature 19.
  • the armature 19 is with the valve closing section 28 facing away End of the valve needle 20 z. B. by a weld connected and aligned to the core 2.
  • Valve needle 20 during its axial movement with armature 19 along the valve longitudinal axis 8 serves on the one hand in Valve seat support 21 at the end facing armature 19 provided guide opening 34 and on the other arranged upstream of the valve seat element 26 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.
  • 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.
  • a first paragraph 49 serves as a contact surface for e.g. helical Compression spring 50.
  • the second stage 51 is a Enlarged installation space for the three elements 35, 47 and 26 created.
  • the swirl element 47 has one Outside diameter on it taut with little play in the through opening 24 of the valve seat carrier 21 is fitted can be.
  • the compression spring 50 enveloping the valve needle 20 braces the three elements 35, 47 and 26 softly in the Valve seat support 21, since it with its paragraph 49 opposite side against the guide element 35 suppressed.
  • To ensure a secure contact surface on the guide element 35 for the compression spring 50 is that of the swirl element 47 provided with a recess 52 facing away from the bottom 53 of the compression spring 50 is applied.
  • the guide element 35 has a dimensionally accurate inner Guide opening 55 through which the valve needle 20th moved through during their axial movement.
  • the outer diameter of the guide element 35 is chosen to be smaller than the diameter of the through hole 24 downstream the stage 51. This will fuel flow on the outside The circumference of the guide element 35 along in the direction of Valve seat surface 27 guaranteed.
  • the fuel flows downstream of the guide element 35 directly into the Swirl element 47, which FIG. 3 shows in a top view.
  • the guide element 35 on it lower end e.g. with a circumferential chamfer 56 Mistake.
  • valve seat element 26 Before a firm Connection of the valve seat element 26 to the valve seat carrier 21 is carried out, the Valve seat element 26.
  • the valve seat element 26 is through a tool e.g. in the form of a stamp 58 which is shown in FIG is only indicated schematically and that on the outer downstream end face of the valve seat element 26 and of the valve seat carrier 21 abuts against the longitudinal axis of the valve seat carrier 21 aligned.
  • This Welding alignment punch 58 has e.g. distributed over the scope some recesses 59 through which the valve seat element 26 spot welded to the valve seat support 21 becomes.
  • Valve seat element 26 After removing the stamp 58, the Valve seat element 26 completely circumferential with a tight one Weld seam 61 are welded. Below is for example, the guide element 35 against the Valve seat element 26 by means of the valve seat surface 27 seated valve needle 20 aligned.
  • FIG 3 is a between the guide member 35 and Valve seat element 26 embedded swirl element 47 as Individual component shown in a plan view, with as little play as possible on the circumference in the through opening 24 is performed.
  • the swirl element 47 can be inexpensive for example by punching, wire EDM, Laser cutting, etching or other known methods a sheet or by electrodeposition become.
  • Opening area 60 is formed over the entire axial Thickness of swirl element 47 extends.
  • the opening area 60 is by an inner swirl chamber 62 through which the Valve closing section 28 of the valve needle 20 through extends, and from a plurality of into the swirl chamber 62nd opening swirl channels 63 formed.
  • the swirl channels 63 open tangentially into the swirl chamber 62 and stand with their the swirl chamber 62 facing ends 65 not with the outer circumference of the swirl element 47 in connection. Much more remains between the ends 65 of the swirl channels 63 and the outer circumference of the swirl element 47 a circumferential Border area 66.
  • the swirl chamber 62 is after inside of the valve needle 20 (valve closing section 28) and outwards through the wall of the opening area 60 of the Swirl elements 47 limited.
  • the swirl channels 63 in the swirl chamber 62 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.
  • a desired extension of the swirl channels 63 e.g. achieved by bending or kinking.
  • the outer diameter of the swirl element 47 also has the valve seat element 26 this increased outside diameter.
  • the circumference of the valve seat element 26, the weld seam 61 can be provided in the region of the swirl element 47, so that the swirl element 47 outside of its swirl channels 63 is welded directly to the valve seat support 21.
  • the fuel injector is the valve seat carrier 21 designed to be significantly thinner than that in FIG. 1 shown embodiment. While the compression spring 50 with its lower end on the upper face of the Supporting guide element 35 without recess 52 is the Compression spring 50 with its opposite end on one Support disc 68 on. The support disk 68 is through a Weld tightly with the top end of the valve seat bracket 21 connected. Instead of the connecting channels 41 in Valve seat carrier 21 has the in this embodiment Support disc 68 several axially extending and continuous Connection channels 41. For improved flow of the Fuel is on the outer periphery of the guide member 35 formed at least one groove-like flow channel 69, which is particularly clear in Figure 6.
  • the leadership and seating area is a cutout shown in Figure 5 again in a changed 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 turn the three axially successive, disc-shaped Elements 35, 47 and 26 are formed.
  • At the bottom 25 of the Valve seat carrier 21 is the inner through opening 24 in Direction of flow tapered.
  • Corresponding also has valve seat member 26 for precise fitting in the valve seat support 21 a tapered Outer contour.
  • the three elements 35, 47 and 26 through the through opening 24 from above, ie from the side facing the armature 19 introduced, starting with the valve seat member 26 becomes.
  • the weld 61 is at the lower end 25 of the valve seat carrier 21 loaded significantly less.
  • the Swirl element 47 has such an outer diameter that it tightens with little play in the through hole 24 of the valve seat support 21 can be fitted.
  • FIG. 7 is another management and seating area shown, in which the end 25 of the valve seat carrier 21st circumferentially by an additional tubular Fastening part 70 is surrounded. Similar to that in FIG. 4
  • the exemplary embodiment shown are the swirl element 47 and the valve seat member 26 with a larger outer diameter provided as the diameter of the through opening 24, which is why the swirl element 47 at the end 25 of the valve seat carrier 21 abuts 82 on the end face.
  • the guide element 35 is as running flat disc and inside the Through opening 24 is arranged, the outer diameter is significantly smaller than the diameter of the Through opening 24 so that fuel on the outer circumference of the guide element 35 can flow axially along.
  • valve seat element 26 and Valve seat support 21 The fixed connection of valve seat element 26 and Valve seat support 21 is the additional Fastening part 70 achieved.
  • the thin-walled, tubular Fastening part 70 namely surrounds both that Valve seat element 26 and the swirl element 47 as well End 25 of the valve seat carrier 21.
  • the valve seat element 26 and the fastening part 70 With the weld 61 the valve seat element 26 and the fastening part 70 are on their lower, flush end faces with each other connected.
  • the Weld 61 is clear in such an embodiment less loaded than in the embodiment according to Figure 2. Die Welding can therefore be done with less thermal energy take place, thereby the shape accuracy of the valve seat element 26 is definitely guaranteed.
  • valve seat bracket 21 and fastening part 70 takes over a second, for example somewhat more than the weld 61 formed weld 71, e.g. upstream of the guide member 35 from the outer periphery of the Fastening part 70 is attached forth.
  • additional fastening part 70 can swirl element 47 and the guide element 35 very precisely to the longitudinal axis of the Valve seat carrier 21 are aligned, with what Tilting or jamming of the guide element 35 on the Valve needle 20 is avoided.
  • the swirl element 47 has such an outer diameter that it tightens in the Fastening part 70 can be fitted.
  • the compression spring 50 installed with one end on the resilient guide element 35 rests and with itself its end facing away from the guide element 35 on the shoulder 49 is supported in the valve seat support 21.
  • a sealing element 73 is used between an outer Heel 72 on the valve seat support 21 and that of the weld seam 61 for example.
  • valve closing section 28 instead of the frustoconical shape, otherwise e.g. be spherical.
  • the center of the ball is advantageously in the axial Height of the guide element 35. So it becomes effective prevents the valve needle 20 from being in the guide element 35 jammed.
  • FIG. 8 An embodiment in which one against Guide element 35 acting compression spring 50 is dispensed with, shows Figure 8.
  • Level 51 is not only used to enlarge the Opening diameter for receiving the elements 35, 47 and 26, but also as a contact surface for the upper end face of the guide element 35.
  • In order to flow the fuel in To ensure direction to the valve seat surface 27 is on outer circumference of the guide element 35 at least one groove-like flow channel 69 formed. This Flow channels 69 have on the upper end of the Guide element 35 such a large radial extent that Fuel from upstream of stage 51 unhindered into it can occur.
  • the fuel After flowing through the at least one flow channel 69 the fuel enters between the guide element 35 and swirl element 47 located annular space 76, which through the on the lower end face of the guide element 35 molded peripheral bevel 56 results. From the annulus 76 the fuel flows into the opening area 60, in particular in the ends 65 serving as collecting pockets Swirl channels 63 of swirl element 47. In the already explained Interfering turbulence occurring in the fluid is thus the collecting bags 65 dismantled.
  • the game between the valve needle 20 and the guide member 35 in the Guide opening 55 is very small, so it in this Area due to the pressure difference between the two End faces of the guide element 35 does not lead to a leakage current of the fuel is coming.
  • the one shown in FIG. The three elements 35, 47 and 26 are exemplary embodiments pre-fixed in the through opening 24.
  • the guide element 35 has a significantly larger one in the through opening 24 Play as the valve needle 20 in the guide opening 55.
  • the final alignment of the Guide element 35 opposite the valve seat element 26 be made, the alignment using the Valve needle 20 or a comparable contour having auxiliary body takes place. After aligning the Elements 35, 47 and 26 become axial against step 51 clamped in the valve seat support 21, and the valve seat element 26 while maintaining this tension with the Valve seat support 21 on the downstream end face welded (weld 61).
  • the exemplary embodiment according to FIG. 8 can also be carried out in this way be that the elements 35, 47 and 26 by little play or even pressure is fixed in the through opening 24 become.
  • the valve seat member 26 by the Weld 61 or by flanging in the through hole 24 be attached.
  • FIG. 9 shows a further guidance and seating area shown fuel injector according to the invention, in which no separate guide element 35 is provided. Rather, the part that forms the valve housing Valve seat carrier 21 a lower, the valve seat element 26 facing guide section 35 '.
  • the guide opening 55 for guiding the valve needle 20 is therefore in the Valve seat support 21 integrated.
  • the passage opening 24 in Valve seat carrier 21 thus ends as a guide opening 55 in downstream direction. Upstream of the guide opening 24 branches out of the through opening 24 into one downstream tapered Opening section 79 one or more, for example, at an angle flow openings 81 running to the longitudinal axis 8 of the valve, that on the lower spray-side end face 82 of the Valve seat support 21 end.
EP98947359A 1997-08-22 1998-07-28 Brennstoffeinspritzventil Expired - Lifetime EP0934459B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19736682A DE19736682A1 (de) 1997-08-22 1997-08-22 Brennstoffeinspritzventil
DE19736682 1997-08-22
PCT/DE1998/002135 WO1999010649A1 (de) 1997-08-22 1998-07-28 Brennstoffeinspritzventil

Publications (2)

Publication Number Publication Date
EP0934459A1 EP0934459A1 (de) 1999-08-11
EP0934459B1 true EP0934459B1 (de) 2002-10-23

Family

ID=7839919

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98947359A Expired - Lifetime EP0934459B1 (de) 1997-08-22 1998-07-28 Brennstoffeinspritzventil

Country Status (8)

Country Link
US (1) US6145761A (ja)
EP (1) EP0934459B1 (ja)
JP (2) JP4097713B2 (ja)
KR (1) KR100623402B1 (ja)
CN (1) CN1095932C (ja)
CZ (1) CZ292735B6 (ja)
DE (2) DE19736682A1 (ja)
WO (1) WO1999010649A1 (ja)

Families Citing this family (55)

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US6257508B1 (en) 1997-02-06 2001-07-10 Siemens Automotive Corporation Fuel injector having after-injection reduction arrangement
US6886758B1 (en) * 1997-02-06 2005-05-03 Siemens Vdo Automotive Corp. Fuel injector temperature stabilizing arrangement and method
US6179227B1 (en) * 1997-02-06 2001-01-30 Siemens Automotive Corporation Pressure swirl generator for a fuel injector
US6125818A (en) * 1997-03-19 2000-10-03 Hiatchi, Ltd. Fuel injector and internal combustion engine having the same
DE19736682A1 (de) * 1997-08-22 1999-02-25 Bosch Gmbh Robert Brennstoffeinspritzventil
JP3612421B2 (ja) * 1998-04-06 2005-01-19 株式会社日立製作所 複数部材からなる精密部品の同芯結合方法、燃料噴射弁の組立て方法、及び燃料噴射弁
RU2227226C2 (ru) * 1998-08-27 2004-04-20 Роберт Бош Гмбх Клапанная форсунка
DE19907897A1 (de) * 1999-02-24 2000-08-31 Bosch Gmbh Robert Brennstoffeinspritzventil
US6279844B1 (en) * 1999-03-18 2001-08-28 Siemens Automotive Corporation Fuel injector having fault tolerant connection
US6920690B1 (en) 1999-04-27 2005-07-26 Siemens Vdo Automotive Corp. Method of manufacturing a fuel injector seat
WO2000065227A1 (en) 1999-04-27 2000-11-02 Siemens Automotive Corporation Fuel injector seat with a sharp edge
JP3810583B2 (ja) * 1999-05-13 2006-08-16 三菱電機株式会社 燃料噴射弁
US6065692A (en) * 1999-06-09 2000-05-23 Siemens Automotive Corporation Valve seat subassembly for fuel injector
DE19927899A1 (de) * 1999-06-18 2000-12-21 Bosch Gmbh Robert Brennstoffeinspritzventil
DE19935262A1 (de) 1999-07-27 2001-02-01 Bosch Gmbh Robert Brennstoffeinspritzventil
DE19937961A1 (de) * 1999-08-11 2001-02-15 Bosch Gmbh Robert Brennstoffeinspritzventil und Verfahren zur Herstellung von Austrittsöffnungen an Ventilen
US6257496B1 (en) * 1999-12-23 2001-07-10 Siemens Automotive Corporation Fuel injector having an integrated seat and swirl generator
US6848634B1 (en) * 1999-12-30 2005-02-01 Siemens Vdo Automotive Corp. Fuel injector with thermally isolated seat
DE10037571A1 (de) * 2000-08-02 2002-02-14 Bosch Gmbh Robert Brennstoffeinspritzventil und Verfahren zu dessen Einstellung
DE10038293A1 (de) * 2000-08-05 2002-02-14 Bosch Gmbh Robert Brennstoffeinspritzventil
DE10046305A1 (de) 2000-09-19 2002-04-04 Bosch Gmbh Robert Brennstoffeinspritzventil
DE10046306A1 (de) 2000-09-19 2002-04-04 Bosch Gmbh Robert Brennstoffeinspritzventil
DE10049033B4 (de) * 2000-10-04 2005-08-04 Robert Bosch Gmbh Brennstoffeinspritzventil
DE10049034B4 (de) 2000-10-04 2005-08-04 Robert Bosch Gmbh Brennstoffeinspritzventil
DE10050053B4 (de) 2000-10-10 2005-04-28 Bosch Gmbh Robert Brennstoffeinspritzventil
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DE19736682A1 (de) 1999-02-25
CN1095932C (zh) 2002-12-11
US6145761A (en) 2000-11-14
JP2008106781A (ja) 2008-05-08
JP4097713B2 (ja) 2008-06-11
CZ292735B6 (cs) 2003-12-17
DE59806045D1 (de) 2002-11-28
WO1999010649A1 (de) 1999-03-04
EP0934459A1 (de) 1999-08-11
KR100623402B1 (ko) 2006-09-13
KR20000068730A (ko) 2000-11-25
CZ135999A3 (cs) 1999-12-15
JP2001504914A (ja) 2001-04-10
JP4510871B2 (ja) 2010-07-28
CN1237225A (zh) 1999-12-01

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