EP1469191B1 - Ventilanordnung - Google Patents

Ventilanordnung Download PDF

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Publication number
EP1469191B1
EP1469191B1 EP03008590A EP03008590A EP1469191B1 EP 1469191 B1 EP1469191 B1 EP 1469191B1 EP 03008590 A EP03008590 A EP 03008590A EP 03008590 A EP03008590 A EP 03008590A EP 1469191 B1 EP1469191 B1 EP 1469191B1
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EP
European Patent Office
Prior art keywords
valve
centring sleeve
valve needle
assembly
valve body
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 - Fee Related
Application number
EP03008590A
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English (en)
French (fr)
Other versions
EP1469191A1 (de
Inventor
Angelo D'arrigo
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.)
Continental Automotive GmbH
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Continental Automotive 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 Continental Automotive GmbH filed Critical Continental Automotive GmbH
Priority to EP03008590A priority Critical patent/EP1469191B1/de
Priority to DE60329269T priority patent/DE60329269D1/de
Publication of EP1469191A1 publication Critical patent/EP1469191A1/de
Application granted granted Critical
Publication of EP1469191B1 publication Critical patent/EP1469191B1/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • F02M61/04—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
    • F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
    • 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
    • F02M61/161—Means for adjusting injection-valve lift

Definitions

  • the present invention refers to a valve assembly, in particular for use in an injector unit for injecting fuel into a vehicle engine, comprising a valve body with a valve body cavity and a valve orifice, in which valve body cavity there is installed a valve seat assembly comprising the valve orifice and a valve seat being fixed into the valve body to one of the openings of the valve body cavity and a valve needle assembly comprising a valve needle movable along its longitudinal axis between a closed position, in which the valve needle obturates the valve orifice, and an open position, in which the valve needle does not obturate the valve orifice, the valve needle assembly being guided in an axially centered way by at least two coaxial guiding zones inside the valve body cavity and axially apart from each other.
  • the invention further refers to a method for producing a valve assembly, in particular for use in an injector unit for injecting fuel into a vehicle engine, comprising the steps of providing a valve body with a valve body cavity having at least two openings; providing a valve needle assembly comprising a valve needle movable along its longitudinal axis; providing a first guiding element having an inner diameter corresponding substantially to the outer diameter of a first section of the valve needle assembly, and a second guiding element having an inner diameter corresponding substantially to the outer diameter of a second section of the valve needle assembly; providing and fixing a valve seat assembly comprising an orifice and a valve seat to one of the openings of the valve body cavity.
  • Injector units for injecting fuel into a modern vehicle engine comprise valve assemblies for metering the fuel with high precision with respect to volume and time of injection.
  • Common valve assemblies as illustrated e.g. in Fig. 5 , mainly consist of a valve body and a valve needle assembly.
  • the valve needle assembly usually comprises the valve needle movable along its longitudinal axis and some actuator unit that can be the armature of an electro-magnetic actuation means.
  • the valve body that may be assembled from several parts provides an outer application surface e.g. for outer holding means and an inner cavity, that can be flooded with fuel.
  • the cavity comprises at least two openings: one, into which the valve needle assembly is inserted and another one providing the valve orifice, which is opened and closed by the valve needle.
  • valve needle The perfect longitudinal movement of the valve needle is very critical. Any lateral movement or misalignment yields substantial wear of the valve needle and/or the valve seat. Thus, some guiding of the movement is required.
  • the lower guide usually is configured as an aperture situated in the area of the valve seat and valve orifice.
  • the aperture's diameter substantially matches the diameter of the valve needle.
  • the upper guide often is configured as an eyelet around the valve body's rim, where the valve needle assembly is inserted.
  • the upper guide acts as a centring means when assembling the valve assembly, while the lower guide acts as a guiding means at every single movement of the valve needle in operation.
  • JP 2000-018134 A discloses an injector with a valve needle consisting of two parts that are connected via two connecting members.
  • a guide sleeve is press-fit.
  • Within the nozzle body a guide surface is formed that guides the guide sleeve of the valve needle when the valve needle moves in axial direction to open or close the valve.
  • the guide sleeve is divided into an upper and a lower part.
  • the bore of the guide sleeve and the outside surface of the connecting members are conically formed.
  • the two parts of the guide sleeve fit around the connecting members of the valve needle.
  • a spring presses the upper guide sleeve onto the lower guide sleeve.
  • US 4 903 898 discloses an injector valve with a valve needle comprising two guide sections that are axially separated from one another and both guide the valve needle in the guide bore of the nozzle body and leave free an axial passageway for the fuel.
  • the guide sections are formed as pentagons with rounded corners in between the flat faces that form the pentagon. The rounded corners guide the valve needle in the guide bore.
  • US 4 944 486 discloses an electromagnetically actuatable valve and method for its manufacture.
  • the valve has a tubular metal connection fitting.
  • An intermediate part is connected tightly to the connection fitting, adjoining it at one end concentrically with the longitudinal axis of the valve.
  • the intermediate part is manufactured from nonmagnetic metal.
  • a metal valve seat body Remote from the connection fitting, a metal valve seat body is connected to the intermediate part.
  • the intermediate part is tubular and has a coaxial guide bore, into which an armature extends. The armature is guided during its displacement motion by the guide bore.
  • Disposed at its end toward the valve seat body the armature has a valve closing body connected to it.
  • a plastic sheath surrounds at least part of the intermediate part.
  • the valve assembly according to the present invention improves a valve assembly according to the prior art by a centring sleeve being fixed inside the valve body cavity, which centring sleeve comprises the at least two guiding zones.
  • the upper and the lower guides are no longer configured as separate parts being installed in different process steps. Rather, the upper and the lower guides are provided by one single element featuring the correct alignment proportions and being inserted into the valve body as a whole.
  • the valve needle assembly comprises a fluid outlet inside the centring sleeve and the centring sleeve comprises at least one lateral opening in its lateral wall to allow a fluid flow from the fluid outlet into the valve body cavity.
  • the fuel is filled into the valve body cavity through the valve needle assembly.
  • the valve needle assembly is situated inside the centring sleeve, the openings according to this preferred embodiment act as a channel through which the fuel may stream into the valve body cavity.
  • the centring sleeve is shaped with respect to the coaxiality of its at least two guiding zones after having been fixed inside the valve body cavity.
  • this procedure may rise the problem of distortion due to the welding heat applied. It may, thus, be better to insert and fix a centring sleeve roughly shaped and to shape it with some special high precision tool after the fixing. This is particularly advantageous, if the wall of the centring sleeve is not too thick.
  • shapeing may, as explained below, include sizing e.g. of diameters.
  • a first guiding zone - namely the lower guide - is configured as an opening in an end face of the centring sleeve with a diameter corresponding to the diameter of the valve needle.
  • a guiding zone corresponds substantially to the aperture of the prior art without featuring its problems mentioned above.
  • the lower guide may also be configured as a cylindrical guiding zone, though this configuration might be disadvantageous in terms of friction between the valve needle and the lower guide.
  • the centring sleeve is made from a non-magnetic metal, like e.g. a non-magnetic corrosion resistant steel such as SAE 200 series Austenitic.
  • a non-magnetic corrosion resistant steel such as SAE 200 series Austenitic.
  • the centring sleeve acts additionally as a non-magnetic shell which is required for magnetic insulation, when the valve needle is actuated electro-magnetically.
  • the centring sleeve is configured as a single piece, it is possible that the centring sleeve is assembled from at least two parts being permanently fixed to each other. In this case it is possible to adjust the size, e.g. the length of the centring sleeve according to the particular application.
  • the centring sleeve comprises a connection port for a fluid tube, which connection port is preferably positioned outside the valve body cavity.
  • valve needle assembly comprises an electro-magnetic armature to move the valve needle upon electrical actuation. This way the valve needle can be moved electro-magnetically, i.e. with high precision with respect to volume and time of injection.
  • the method according to the present invention improves the method according to the prior art by the first and the second guiding elements being configured as coaxial and guiding zones of a single centring sleeve, positioned axially apart from each other, the centring sleeve being inserted into the valve body cavity as a whole.
  • valve body as such may be produced with lower precision, lowering the overall costs.
  • the method further comprises the steps: inserting and fixing the centring sleeve partially inside the valve body cavity; then shaping the centring sleeve with respect to the coaxiality and/or the diameters of its guiding zones; then inserting the valve needle assembly into the centring sleeve.
  • this procedure may rise the problem of distortion due to the welding heat applied. It may, thus, be better to insert and fix a centring sleeve roughly shaped and to shape it with some special high precision tool after fixing. This is particularly advantageous, if the wall of the centring sleeve is not too thick.
  • a first guiding zone - namely the lower guide - is configured as an opening in an end face of the centring sleeve with a diameter corresponding to the diameter of the valve needle.
  • a guiding zone corresponds substantially to the aperture of the prior art without featuring its problems mentioned above.
  • the lower guide may also be configured as a cylindrical guiding zone, though this configuration might be disadvantageous in terms of friction between the valve needle and the lower guide.
  • the method further comprises the step of checking the coaxiality of the centring sleeve's end face opening and its cylindrical guiding part by a double concentric pin gage.
  • a double concentric pin gage in particular a Go/No Go-Gage, the upper and the lower guides can be checked together as well as separately, yielding more information about possible errors in the system setup.
  • the method further comprises the step of attaching a fluid tube to the centring sleeve.
  • the axial travel of the valve needle is adjusted by inserting the fuel tube accordingly deep into the centring sleeve in order to provide a first stop for the valve needle, while the valve seat is providing an opposite stop for the valve needle.
  • FIG. 5 illustrates a valve assembly 10' according to the prior art.
  • a valve needle assembly 12' comprises a valve needle 14', which is movable along its longitudinal axis upon actuation by an actuating unit 16', which is configured as an electro-magnetic armature.
  • the valve needle assembly 12' is positioned in a valve body cavity 20' of a valve body 18'.
  • the valve needle assembly 12' is positioned such, that, upon actuation, the valve needle 14' closes and opens a valve orifice 22' by moving to an from a valve seat 24'.
  • valve body is assembled from several parts, namely the actual valve body 18', a non-magnetic shell 26' and valve body shell 28'. All three parts are fixed permanently by welds W.
  • the non-magnetic shell also acts as a connection port for a fuel tube 30'.
  • the perfectly linear movement of the valve needle 14' is essential for a long lifetime operation of the valve assembly 10'.
  • two guiding zones are provided inside the valve body cavity, namely an upper guide 32' and a lower guide 34'.
  • the upper guide 32' is configured as a metallic sleeve crimped on the upper rim of the valve body 18'.
  • the inner diameter of the upper guide 32' matches the outer diameter of the actuating unit 16' of the valve needle assembly 12'.
  • the lower guide 34' is configured as an aperture having a diameter, that matches the diameter of the valve needle 14' and which is positioned near the valve seat 24'. It is obvious, that the proper alignment of the upper guide 32' and the lower guide 34' is crucial. However, as they are configured as two separate elements being inserted and fixed in the valve body cavity 20' in different steps, it is difficult to obtain such proper alignment.
  • Fig. 1 illustrates a centring sleeve 36 according to the present invention in two different views rotated by 90° to each other.
  • Fig. 2 illustrates a complete valve assembly with fuel tube according to the present invention in two different views rotated by 90° to each other. Both Figures will be described together in the following. Like reference numerals without prime (') symbolize like or functionally equal elements as in Fig. 5 .
  • the centring sleeve 36 is inserted and permanently fixed in the valve body 18. In its lower end face it comprises an opening of a diameter matching the diameter of the valve needle 14. This opening acts as a lower guide 34. In its upper part the centring sleeve features a first cylindrical part, acting as an upper guide 32. The outer diameter of the upper guide 32 matches the inner diameter of the valve body, while its inner diameter matches the diameter of the armature 16 of the valve needle assembly 14. In the embodiment of Figs. 1 and 2 the centring sleeve 36 also comprises a second cylindrical part at its upper end, that serves as the non-magnetic shell 26, if the centring sleeve 36 is made from some non-magnetic material as is preferred.
  • the centring sleeve 36 may as well be assembled from several pieces fixed permanently to each other prior to inserting the centring sleeve 36 into the valve body 18.
  • the centring sleeve is assembled from two axially movable section, its length can be adapted to the special application before fixing the sections together.
  • the centring sleeve may be produced by any suitable technique and may be a flanged or dished part, an extruded part, a press forging part, a part machined from a solid rod, etc. It may feature different wall thicknesses along its length or not.
  • the fuel to be injected is supplied from the fuel tube through the valve needle assembly 14 via a fuel outlet 38.
  • the fuel outlet 38 is situated inside the centring sleeve 36.
  • the centring sleeve 36 features two lateral openings 40, through which the fuel may stream into the valve body cavity 20, as is indicated by the arrows 42.
  • the particular geometric shape of the lateral openings 40 may be designed according to optimised fuel flow conditions and is not restricted to the shape shown.
  • Fig. 3 illustrates eight steps a) to h) of a preferred embodiment of the method according to the present invention.
  • a centring sleeve 36 according to the invention is inserted into the cavity 20 of a valve body 18.
  • the centring sleeve 36 is configured as described before, having a lower guide 34, an upper guide 32 and a terminal section 26 serving as a non-magnetic shell.
  • the centring sleeve features two openings 40.
  • the dimensions of the centring sleeve 36 substantially match the final specifications, this is not crucial, since in the preferred embodiment of Fig. 3 there is provided a special sizing step (see below).
  • the centring sleeve 36 and the valve body 18 are location fixed to each other. It is possible to provide the centring sleeve 18 with a mechanical stop to obtain a specified insertion depth.
  • step b) the valve body 18 and the centring sleeve 36 are permanently fixed to each other, e.g. by welding, furnace brazing, gluing etc.
  • step c) the upper and lower guides 32, 34 are sized and shaped correctly.
  • This step is very advantageous since the welding heat of step c) might create some distortions of the centring sleeve, corrupting the required coaxiality of the upper and the lower guide 32, 34.
  • the shaping and sizing process is carried out by a particular tool 44.
  • the tool 44 mainly compresses the material inducing plastic deformation and a good, i.e. minimized, surface roughness is obtained yielding reduced friction in the successive insertion process of the valve needle assembly 12.
  • Fig. 4b illustrates the simpler version, where the sizing tool 44 is configured as one piece with two different sections 46, 48 corresponding to the upper and the lower guides 32, 34.
  • the sizing tool 44 is configured as one piece with two different sections 46, 48 corresponding to the upper and the lower guides 32, 34.
  • the sizing tool 44 is configured as one piece with two different sections 46, 48 corresponding to the upper and the lower guides 32, 34.
  • Around each of the sections 46, 48 there are coaxial rims with increasing diameter such that insertion of the tool 44 leads to an increasing compression of the centring sleeve's wall material. It is preferred, that the diameter of the largest rim of each section is slightly larger than the desired corresponding inner diameter of the centring sleeve taking into account material settlement.
  • Fig. 4a illustrates a further embodiment, in which the tool 44 comprises an outer tool body 52 and an inner movable shaft 54.
  • the tool body comprises a first section 46 for sizing the upper guide 32, while the shaft 54 comprises a second section 48 for sizing the lower guide 34.
  • the advantage of this version of the tool 44 is, that the axial distance between upper and lower guides 32, 34 may vary. However, such a tool is more difficult to machine.
  • step d) of Fig. 3 the coaxiality and the inner diameters of the upper and the lower guides are checked by a special gage 56.
  • the gage 56 is preferably configured as a double concentric Go/No Go-gage having an outer gage body 58 and an inner movable gage shaft 60.
  • the gage body 58 has a diameter corresponding to the desired diameter of the upper guide 32, while the gage shaft 60 has a diameter corresponding to the desired diameter of the lower guide 34.
  • the advantage of such double concentric gage is, that the upper and the lower guides 32, 34 may be checked separately as well as simultaneously, which is important for checking their coaxialty.
  • valve seat assembly is inserted into the valve body 18.
  • the valve seat assembly comprises the valve seat 24 as such as well as the valve orifice 22 and is fixed and sealed hermetically.
  • step f) the valve needle assembly 12 is inserted into the centring sleeve 36 being perfectly guided by the upper and lower guides 32, 34 provided by the centring sleeve 36 according to the invention.
  • the valve needle assembly may be the same in the prior art.
  • step g) the fuel tube 30 is inserted into the terminal section of the centring sleeve 36. It is pushed down to the desired insertion depth.
  • This step can be used to adjust the axial travel of the valve needle 14.
  • the armature 16 is activated by a slave coil.
  • the fuel tube 30 is pushed down towards the valve needle 12 until there is a certain gap between the valve needle assembly impact surface and the fuel tube impact surface. This gap determines the axial travel of the valve needle 14.
  • This adjustment is a step by step process and requires a correct dimensioning and shaping of the lower part of the fuel tube 30.
  • step h) the fuel tube 30 is permanently fixed to the centring sleeve 36 e.g. by welding.

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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)
  • Manufacturing & Machinery (AREA)
  • Fuel-Injection Apparatus (AREA)

Claims (14)

  1. Ventilanordnung, insbesondere zur Verwendung in einer Einspritzeinheit zum Einspritzen von Kraftstoff in einen Fahrzeugmotor, umfassend einen Ventilkörper (18) mit einem Ventilkörperhohlraum (20) und einer Ventilöffnung (22), wobei in dem Ventilkörperhohlraum (20) eine Ventilsitzanordnung (22, 24) installiert ist, umfassend die Ventilöffnung (22) und einen Ventilsitz (24), der in dem Ventilkörper (18) an einer der Öffnungen des Ventilkörperhohlraums (20) befestigt ist, und eine Ventilnadelanordnung, umfassend eine Ventilnadel (14), die entlang ihrer Längsachse zwischen einer geschlossenen Position, in der die Ventilnadel (14) die Ventilöffnung (22) verschließt, und einer offenen Position, in der die Ventilnadel (14) die Ventilöffnung (22) nicht verschließt, bewegbar ist, wobei die Ventilnadelanordnung (14) in einer axial zentrierten Weise von mindestens zwei koaxialen Führungszonen (32; 34) geführt wird, die im Inneren des Ventilkörperhohlraums (20) und axial voneinander beabstandet angeordnet sind, dadurch gekennzeichnet, dass
    eine Zentrierbuchse (36) im Inneren des Ventilkörperhohlraums (20) befestigt ist, wobei die Zentrierbuchse (36) die mindestens zwei Führungszonen (32; 34) umfasst.
  2. Ventilanordnung nach Anspruch 1, dadurch gekennzeichnet,
    dass
    die Ventilnadelanordnung (14) einen Fluidauslass (38) im Inneren der Zentrierbuchse (36) umfasst, und die Zentrierbuchse (36) mindestens eine seitliche Öffnung (40) in ihrer Seitenwand umfasst, um zu gestatten, dass ein Fluid vom Fluidauslass (38) in den Ventilkörperhohlraum (20) fließt.
  3. Ventilanordnung nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass
    eine erste Führungszone (34) als Öffnung in einer Endfläche der Zentrierbuchse (36) mit einem Durchmesser entsprechend dem Durchmesser der Ventilnadel (14) ausgestaltet ist.
  4. Ventilanordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Zentrierbuchse (36) aus einem nicht magnetischen Metall hergestellt ist.
  5. Ventilanordnung nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass
    die Zentrierbuchse (36) aus mindestens zwei Teilen zusammengebaut ist, die permanent aneinander befestigt sind.
  6. Ventilanordnung nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass
    die Zentrierbuchse (36) einen Anschlussstutzen für ein Fluidrohr (30) umfasst.
  7. Ventilanordnung nach Anspruch 6, dadurch gekennzeichnet,
    dass
    der Anschlussstutzen außerhalb des Ventilkörperhohlraums (20) positioniert ist.
  8. Ventilanordnung nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass
    die Ventilnadelanordnung einen elektromagnetischen Anker (16) umfasst, um die Ventilnadel (14) aufgrund einer elektrischen Betätigung zu bewegen.
  9. Verfahren zum Herstellen einer Ventilanordnung, insbesondere zur Verwendung in einer Einspritzeinheit zum Einspritzen von Kraftstoff in einen Fahrzeugmotor, umfassend die folgenden Schritte
    - Bereitstellen eines Ventilkörpers (18) mit einem Ventilkörperhohlraum (20), der mindestens zwei Öffnungen aufweist;
    - Bereitstellen einer Ventilnadelanordnung, umfassend eine Ventilnadel (14), die entlang ihrer Längsachse bewegbar ist;
    - Bereitstellen eines ersten Führungselements (34), das einen Innendurchmesser entsprechend im Wesentlichen dem Außendurchmesser eines ersten Abschnitts der Ventilnadelanordnung (12, 12') aufweist, und eines zweiten Führungselements (32), das einen Innendurchmesser entsprechend im Wesentlichen dem Außendurchmesser eines zweiten Abschnitts der Ventilnadelanordnung (12) aufweist;
    - Bereitstellen und Befestigen einer Ventilsitzanordnung (22, 24), umfassend eine Öffnung (22) und einen Ventilsitz (24), an einer der Öffnungen des Ventilkörperhohlraums (20),
    dadurch gekennzeichnet, dass
    die ersten und zweiten Führungselemente koaxial und als Führungszonen (34; 32) einer einzelnen Zentrierbuchse (36) ausgestaltet sind, die axial voneinander beabstandet positioniert sind, wobei die Zentrierbuchse (36) zusammen in den Ventilkörperhohlraum (20) als Ganzes eingesetzt wird.
  10. Verfahren nach Anspruch 9, dadurch gekennzeichnet, dass
    es überdies die folgenden Schritte umfasst:
    - Einsetzen und Befestigen der Zentrierbuchse (36), teilweise im Inneren des Ventilkörperhohlraums;
    - dann Formschleifen der Zentrierbuchse (36) in Bezug auf die Koaxialität und/oder die Durchmesser der Führungszonen (34; 32);
    - dann Einsetzen der Ventilnadelanordnung (12) in die Zentrierbuchse (36).
  11. Verfahren nach einem der Ansprüche 9 oder 10, dadurch gekennzeichnet, dass
    die erste Führungszone (34) als eine Öffnung in einer Endfläche der Zentrierbuchse (36) mit einem Durchmesser entsprechend dem Durchmesser der Ventilnadel (14) ausgestaltet ist.
  12. Verfahren nach einem der Ansprüche 9 bis 11, dadurch gekennzeichnet, dass
    es überdies den Schritt des Prüfens der Koaxialität der Führungszonen (34, 32) der Zentrierbuchse (36) durch eine doppelkonzentrische Messlehre (56) (pin gage) umfasst.
  13. Verfahren nach einem der Ansprüche 9 bis 12, dadurch gekennzeichnet, dass
    es überdies den Schritt des Anbringens eines Kraftstoffrohrs (30) an der Zentrierbuchse (36) umfasst.
  14. Verfahren nach Anspruch 13, dadurch gekennzeichnet, dass
    der Axialhub der Ventilnadel (14) durch Einsetzen des Kraftstoffrohrs (30) entsprechend tief in die Zentrierbuchse (36) eingestellt wird, um einen ersten Anschlag für die Ventilnadel (14) bereitzustellen, während der Ventilsitz (24) einen gegenüberliegenden Anschlag für die Ventilnadel (14) bereitstellt.
EP03008590A 2003-04-14 2003-04-14 Ventilanordnung Expired - Fee Related EP1469191B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP03008590A EP1469191B1 (de) 2003-04-14 2003-04-14 Ventilanordnung
DE60329269T DE60329269D1 (de) 2003-04-14 2003-04-14 Ventilanordnung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03008590A EP1469191B1 (de) 2003-04-14 2003-04-14 Ventilanordnung

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EP1469191A1 EP1469191A1 (de) 2004-10-20
EP1469191B1 true EP1469191B1 (de) 2009-09-16

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DE102017218208A1 (de) * 2017-10-12 2019-04-18 Continental Automotive Gmbh Magnetventil - Hülse mit kombinierter Führung von Anker und Pin

Citations (3)

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US4944486A (en) * 1988-07-23 1990-07-31 Robert Bosch Gmbh Electromagnetically actuatable valve and method for its manufacture
EP0905371A2 (de) * 1997-09-24 1999-03-31 MAGNETI MARELLI S.p.A. Elektromagnetisches Einspritzventil
US20010002681A1 (en) * 1995-12-19 2001-06-07 Clemens Willke Fuel injection valve

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GB2112455B (en) * 1981-12-24 1984-12-05 Lucas Ind Plc Guiding outwardly opening valves in fuel injectors
US4552312A (en) * 1983-01-14 1985-11-12 Tohoku Mikuni Kogyo Kabushiki Kaisha Fuel injection valve
DE8632002U1 (de) * 1986-11-28 1988-03-31 Robert Bosch Gmbh, 7000 Stuttgart, De
GB8628600D0 (en) * 1986-11-29 1987-01-07 Lucas Ind Plc Fuel injection nozzles
JP2000018134A (ja) * 1998-06-30 2000-01-18 Isuzu Motors Ltd インジェクタ
EP1262654A4 (de) * 2000-01-26 2005-04-06 Hitachi Ltd Elektromagnetisch betätigter brennstoffinjektor
DE10031573A1 (de) * 2000-06-29 2002-01-17 Bosch Gmbh Robert Hochdruckfester Injektor zur Kraftstoffeinspritzung in Kompaktbauweise

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4944486A (en) * 1988-07-23 1990-07-31 Robert Bosch Gmbh Electromagnetically actuatable valve and method for its manufacture
US20010002681A1 (en) * 1995-12-19 2001-06-07 Clemens Willke Fuel injection valve
EP0905371A2 (de) * 1997-09-24 1999-03-31 MAGNETI MARELLI S.p.A. Elektromagnetisches Einspritzventil

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DE60329269D1 (de) 2009-10-29

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