EP0937201B1 - Electromagnetically operated valve - Google Patents

Electromagnetically operated valve Download PDF

Info

Publication number
EP0937201B1
EP0937201B1 EP98945005A EP98945005A EP0937201B1 EP 0937201 B1 EP0937201 B1 EP 0937201B1 EP 98945005 A EP98945005 A EP 98945005A EP 98945005 A EP98945005 A EP 98945005A EP 0937201 B1 EP0937201 B1 EP 0937201B1
Authority
EP
European Patent Office
Prior art keywords
valve
connecting part
slot
valve according
closing 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 - Lifetime
Application number
EP98945005A
Other languages
German (de)
French (fr)
Other versions
EP0937201A1 (en
Inventor
Ferdinand Reiter
Dieter Maier
Ferdinand HÜMMER
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 EP0937201A1 publication Critical patent/EP0937201A1/en
Application granted granted Critical
Publication of EP0937201B1 publication Critical patent/EP0937201B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • 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

Definitions

  • the invention is based on an electromagnetic actuatable valve according to the preamble of the main claim.
  • Out DE-PS 38 31 196 is already an electromagnetic actuatable valve known, the one in a Through hole of a valve seat carrier axially movable Has valve needle.
  • the valve needle is from one cylindrical armature, a spherical valve closing body and a pipe or pipe connecting both components sleeve-shaped connecting part formed.
  • the connecting part is made from a flat sheet of metal that subsequently rolled or bent until there is a cylindrical, sleeve-like shape. In this form the connecting part has one over its entire length axial length extending slot on either run parallel to the axis or at an angle to the longitudinal axis of the valve can.
  • From DE-OS 40 08 675 is already an electromagnetic actuated valve known in which the valve closing body is attached to the connecting part with a weld seam, the weld seam at least in the area of Longitudinal slot or additionally in other places in Circumferential direction is interrupted.
  • the electromagnetically actuated valve 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 advantage is there a connecting part with relatively large tolerances. at it has low weight and great stability Connection part a large-area hydraulic Flow cross section.
  • connection part a large-area hydraulic Flow cross section.
  • the connecting part below is resilient Tension can be inserted into the inner opening of the anchor, see above that disadvantageous chip formation during anchor assembly is avoided.
  • the valve closing body on end of the connecting part facing away from the anchor is very simple and be securely attached as the slit is a clear one has a reduced opening width.
  • connection part from one Manufacture sheet metal by largely cutting sheet metal sections rectangular shape first punched out and then rolled or be bent.
  • the slot of the connecting part will formed by the fact that the elongated End faces of the sheet metal section with a small distance in each case face each other.
  • Valve closing body for example spherical is formed on the with a slot taper trained end of the connecting part by a 360 ° completely circumferential weld seam achievable, which is a very possesses high dynamic strength.
  • the notch advantageously has a Teardrop shape, being directly on the lower face of the connecting part has a very small opening width is present.
  • Sink marks of The weld seam on the notch would not be critical, however the dynamic load is much lower than the above the entire axial length of the connecting part Slot.
  • FIG. 1 shows it partially shown electromagnetically actuated Valve
  • Figure 2 shows a sheet metal section for forming a Connecting part of an axially movable valve needle
  • Figure 3 shows a connecting part as a single component.
  • FIG. 1 is an embodiment Electromagnetically actuated valve in the form of a Injector for fuel injection systems from mixture-compression-ignition internal combustion engines partially shown.
  • the valve has a tubular one Valve seat support 1, in the concentric to one Longitudinal valve axis 2, a longitudinal bore 3 is formed.
  • a longitudinal bore 3 is formed in the longitudinal bore 3 in the longitudinal bore 3 in the longitudinal bore 3 in the longitudinal bore 3 in the longitudinal bore 3 axially movable valve needle 6 arranged.
  • the valve is actuated electromagnetically in known way.
  • Die Valve needle 6 is removed from armature 12, for example one spherical valve closing body 13 and one of the two Connecting parts 14 connecting parts formed, wherein the connecting part 14 has a tubular shape.
  • the return spring 8 is supported with its lower end the upper end face of the connecting part 14.
  • the anchor 12 is with the end facing away from the valve closing body 13 of the connecting part 14 connected by a weld 15 and aligned with the core 11.
  • Valve closing body 13 with the end facing away from the armature 12 the connecting part 14 e.g. with a weld 16 tight connected.
  • the magnetic coil 10 surrounds the core 11, which end of the magnet coil 10 not enclosing one fuel inlet connector, the the Supply of the medium to be measured by means of the valve, here Fuel, serves, represents.
  • valve seat carrier 1 With the lower end of the core 11 and with the Valve seat carrier 1 is concentric with the valve longitudinal axis 2 tightly a tubular, metallic intermediate part 19 connected for example by welding.
  • Valve longitudinal axis 2 In the downstream end of the core 11 facing away from the core Valve seat support 1 is concentric with Valve longitudinal axis 2 extending longitudinal bore 3 cylindrical valve seat body 25 tight by welding assembled.
  • the valve seat body 25 has the core 11 facing a fixed valve seat 26.
  • the solenoid 10 is of at least one, for example trained as a bracket, as a ferromagnetic element serving guide element 30 in the circumferential direction at least partially surrounded, the one end of the core 11th and with its other end on the valve seat support 1 is applied and with these e.g. by welding, soldering or one Adhesive connection is connected.
  • valve seat body 25 To guide the valve closing body 13 during the Axial movement serves a guide opening 31 of the Valve seat body 25. At its one, the Valve closing body 13 facing away from the lower end face 32 the valve seat body 25 with a e.g. cup-shaped trained spray plate 34 concentric and firm connected.
  • the connection of valve seat body 25 and Spray plate 34 is carried out, for example, by a circumferential and dense, e.g. using a laser trained weld 45. This type of assembly is the risk of undesired deformation of the Spray plate 34 in the area of its at least one, for example four by eroding or punching molded spray openings 46 avoided.
  • the insertion depth of the valve seat body 25 and Spray plate 34 existing valve seat part in the Longitudinal bore 3 determines i.a. the adjustment of the stroke of the Valve needle 6, since the one end position of the valve needle 6 at non-excited solenoid 10 by the system of Valve closing body 13 on the surface of the valve seat 26 of the valve seat body 25 is fixed.
  • the other The end position of the valve needle 6 is when the solenoid is excited 10 for example by creating an upper end face 22 of the armature 12 on a lower end face 35 of the core 11 established.
  • the path between these two end positions Valve needle 6 represents the stroke.
  • the spherical valve closing body 13 interacts with the surface tapering in the direction of the flow of the valve seat 26 of the valve seat body 25 together, the downstream of the guide opening 31 of the valve seat body 25 is trained.
  • the guide opening 31 has at least a flow passage 27 on a flow of the Medium in the direction of the valve seat 26 of the valve seat body 25 allows.
  • flow passages in the form of grooves or flattening may be provided.
  • FIG. 3 shows the connecting part 14 according to the invention the valve needle 6 again as a single component before Achieve the firm connections with the anchor 12 and the Valve closing body 13 shown, while FIG. 2 shows a sheet metal section 50 from which the connecting part 14 can be produced.
  • the connecting part 14 is, for example, a chamfer 48 shaped like a ring.
  • a chamfer 48 shaped like a ring.
  • the core 11 enters one inner longitudinal opening 52 inflowing fuel to the outside in the longitudinal bore 3 of the valve seat carrier 1.
  • the fuel reaches Valve seat 26 and to those provided downstream Spray openings 46 through which the fuel in a Intake pipe or a cylinder of an internal combustion engine is hosed.
  • the slot 51 represents a large area hydraulic flow cross section through which the Fuel very quickly from the inner longitudinal opening 52 in the longitudinal bore 3 can reach.
  • the thin-walled Connecting part 14 ensures the lowest weight greatest stability.
  • the connecting part 14th optionally provided with a plurality of flow openings 55 which penetrate the wall of the connecting part 14.
  • the for example circular and already punched in the flow openings 55 introduced into the sheet metal section 50 are exemplary only in the sheet metal section 50 of Figures 2 and shown on the connecting part 14 in Figure 3.
  • the e.g. twelve Flow openings 55 are alternating Rows of two and three are arranged in the sheet metal section 50. Changes in number and location of Flow openings 55 can be easily implemented.
  • connection part 14 is produced in such a way that from a flat, the thickness of the tube wall of the Connecting part 14 having sheet metal sections 50, as one is shown in Figure 2, with largely rectangular shape made for example by stamping become.
  • the sheet metal sections 50 have a longer and one shorter extension, the longer extension of the Length of the connecting part 14 to be produced in axial Direction and the shorter extension approximately the circumference of the to be produced connecting part 14 correspond.
  • each sheet metal section 50 After punching out the sheet metal sections 50 with the top Contour is described under each sheet metal section Using a mandrel in the shape of the desired one Connecting part 14 rolled or bent. Thereby form the each elongated end faces of the connecting part 14 forming sheet metal section 50, the slot 51 by face each other at a short distance. While the Width of the slot 51 in the circumferential direction over the largest Part of its longitudinal extent, for example, about 0.5 mm amounts to 57 in the area of the widenings Slot area 58 with a reduction in the width of the Slot to approx. 0.1 mm.
  • Notch 59 is provided which e.g. is arranged so that the slot at the periphery of the rolled connecting part 14 51 is exactly opposite.
  • the drop-shaped, for example trained notch 59 has on the lower end face 60 only a small opening width, which, however, from the Face 60 is wider, wider, or bulbous is executed. From the contour shown in Figure 2 deviating contours (piston-shaped, balloon-shaped, vice versa U-shaped) of the notch 59 are also conceivable.
  • the manufacture of the connecting part 14 from one Sheet metal section 50 is a particularly light and simple Production method, which means the use of different Materials and which enables series production in large quantities allowed.
  • the connecting part 14 resilient so that for the inner opening of the armature 12th and the connecting part 14 itself relatively coarse tolerances can be chosen. Due to the resilient Resilience is the connector 14 under tension in the inner opening of the armature 12 can be inserted.
  • Connecting part 14 is the weld 16 with a very high dynamic strength achievable.
  • the weld seam 16 between connecting part 14 and valve closing body 13 e.g. with the help of a so-called continuous wave laser manufactured.
  • the valve needle 6 under the continuous laser beam rotated and continuous welded.
  • the dynamic load in the area of Notch 59 is also far less than in one over the entire length of the connecting part 14 extending slot, so that a possibly occurring minimal interruption of the weld 16 at the notch 59 would be uncritical.

Landscapes

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

Description

Die Erfindung geht aus von einem elektromagnetisch betätigbaren Ventil nach der Gattung des Hauptanspruchs. Aus der DE-PS 38 31 196 ist bereits ein elektromagnetisch betätigbares Ventil bekannt, das eine in einer Durchgangsbohrung eines Ventilsitzträgers axial bewegbare Ventilnadel aufweist. Die Ventilnadel wird von einem zylindrischen Anker, einem kugelförmigen Ventilschließkörper und einem beide Bauteile miteinander verbindenden rohr- bzw. hülsenförmigen Verbindungsteil gebildet. Das Verbindungsteil wird aus einem ebenen Metallblech hergestellt, das nachfolgend gerollt oder gebogen wird, bis es eine zylindrische, hülsenähnliche Form annimmt. In dieser Form weist das Verbindungsteil einen sich über seine gesamte axiale Länge erstreckenden Schlitz auf, der entweder achsparallel oder schräg zur Ventillängsachse verlaufen kann. Die beiden in Längsrichtung verlaufenden Stirnflächen der verwendeten Metallbleche liegen den Schlitz zwischen sich bildend mit konstantem Abstand einander gegenüber. Beim Herstellen einer festen Verbindung zwischen Verbindungsteil und Ventilschließkörper durch Anbringen einer Schweißnaht mittels Laser (Continuous Wave Laser) entstehen an dem relativ breiten Schlitz nachteilige Einfallstellen. Dabei ist eine Einfallstelle ein solcher Bereich, an dem weniger Material zum Aufschmelzen vorhanden ist und an dem infolgedessen Material nach innen einfällt. In der Konsequenz besitzt die Schweißnaht an einer solchen Stelle eine dellenförmige konkave Vertiefung, die eine gewisse Störung der Schweißnaht darstellt. Obwohl der Laserstrahl beim Überstreichen des Schlitzes nicht ausgeblendet wird, kann die Schweißnaht im Bereich des Schlitzes sogar eine Unterbrechung aufweisen.The invention is based on an electromagnetic actuatable valve according to the preamble of the main claim. Out DE-PS 38 31 196 is already an electromagnetic actuatable valve known, the one in a Through hole of a valve seat carrier axially movable Has valve needle. The valve needle is from one cylindrical armature, a spherical valve closing body and a pipe or pipe connecting both components sleeve-shaped connecting part formed. The connecting part is made from a flat sheet of metal that subsequently rolled or bent until there is a cylindrical, sleeve-like shape. In this form the connecting part has one over its entire length axial length extending slot on either run parallel to the axis or at an angle to the longitudinal axis of the valve can. The two end faces running in the longitudinal direction the metal sheets used are between the slot forming at a constant distance from each other. At the Establish a firm connection between the connecting part and valve closing body by attaching a weld by means of lasers (continuous wave lasers) relatively wide slot adverse sink marks. there is a sink area such an area where less Material for melting is available and on which as a result material collapses inside. In the The weld seam has the consequence at such a point a dent-shaped concave depression that has a certain Represents weld seam fault. Although the laser beam is not hidden when the slot is covered, the weld in the area of the slot can even be a To have an interruption.

Aus der DE-OS 40 08 675 ist bereits ein elektromagnetisch betätigbares Ventil bekannt, bei dem der Ventilschließkörper mit einer Schweißnaht an dem Verbindungsteil befestigt ist, wobei die Schweißnaht mindestens im Bereich des Längsschlitzes oder noch zusätzlich an weiteren Stellen in Umfangsrichtung unterbrochen ist.From DE-OS 40 08 675 is already an electromagnetic actuated valve known in which the valve closing body is attached to the connecting part with a weld seam, the weld seam at least in the area of Longitudinal slot or additionally in other places in Circumferential direction is interrupted.

Vorteile der ErfindungAdvantages of the invention

Das erfindungsgemäße elektromagnetisch betätigbare Ventil mit den kennzeichnenden Merkmalen des Hauptanspruchs hat den Vorteil, daß es auf besonders einfache Art und Weise kostengünstig herstellbar ist. Es ergibt sich der Vorteil eines Verbindungsteils mit relativ großen Toleranzen. Bei geringem Gewicht und großer Stabilität besitzt das Verbindungsteil einen großflächigen hydraulischen Strömungsquerschnitt. Infolge des sich über die gesamte axiale Länge erstreckenden Schlitzes ist das Verbindungsteil federelastisch, wodurch die Verbindungen mit dem Anker und dem Ventilschließkörper erleichtert werden. Durch die federelastische Nachgiebigkeit ist das Verbindungsteil unter Spannung in die innere Öffnung des Ankers einschiebbar, so daß eine nachteilige Spanbildung bei der Ankermontage vermieden wird. Andererseits kann der Ventilschließkörper am dem Anker abgewandten Ende des Verbindungsteils sehr einfach und sicher befestigt werden, da der Schlitz eine deutlich reduzierte Öffnungsweite besitzt. Beim Anwenden einer durchgehenden Laserschweißung (Continuous Wave Laser) zum Befestigen des Ventilschließkörpers an dem Verbindungsteil wird in vorteilhafter Weise eine Schweißnaht erzielt, die keine wesentliche Unterbrechung besitzt. Die Verkleinerung der Schlitzweite an einem Ende des Verbindungsteils führt zu einer Vergrößerung des verschweißten Querschnitts und fast zu einer Vermeidung von Einfallstellen der Schweißnaht an den Schlitzrändern. Der Schlitz des aus einem unmagnetischen Material gefertigten Verbindungsteils vermeidet eine unerwünschte Wirbelstrombildung.The electromagnetically actuated valve 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 advantage is there a connecting part with relatively large tolerances. at it has low weight and great stability Connection part a large-area hydraulic Flow cross section. As a result of the whole Axial length extending slot is the connecting part resilient, creating connections with the anchor and the valve closing body can be facilitated. Through the The connecting part below is resilient Tension can be inserted into the inner opening of the anchor, see above that disadvantageous chip formation during anchor assembly is avoided. On the other hand, the valve closing body on end of the connecting part facing away from the anchor is very simple and be securely attached as the slit is a clear one has a reduced opening width. When applying one continuous laser welding (continuous wave laser) for Attach the valve closing body to the connecting part is advantageously achieved a weld that has no significant interruption. The downsizing the slot width at one end of the connector leads to an enlargement of the welded cross-section and almost to avoid sink marks on the weld seam the slit edges. The slot of a non-magnetic Material manufactured connecting part avoids one undesirable eddy current formation.

Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen des im Hauptanspruch angegebenen Ventils möglich.By the measures listed in the subclaims advantageous further developments and improvements of the Main claim specified valve possible.

Besonders vorteilhaft ist es, das Verbindungsteil aus einem Metallblech zu fertigen, indem Blechabschnitte in weitgehend rechteckiger Form zuerst ausgestanzt und nachfolgend gerollt oder gebogen werden. Der Schlitz des Verbindungsteils wird dadurch gebildet, daß die jeweils langgestreckten Stirnseiten des Blechabschnitts mit geringem Abstand jeweils einander gegenüberliegen.It is particularly advantageous to make the connecting part from one Manufacture sheet metal by largely cutting sheet metal sections rectangular shape first punched out and then rolled or be bent. The slot of the connecting part will formed by the fact that the elongated End faces of the sheet metal section with a small distance in each case face each other.

In vorteilhafter Weise ist die feste Verbindung des Ventilschließkörpers, der beispielsweise kugelförmig ausgebildet ist, an dem mit einer Schlitzverjüngung ausgebildeten Ende des Verbindungsteils durch eine um 360° vollständig umlaufende Schweißnaht erzielbar, die eine sehr hohe dynamische Festigkeit besitzt.The fixed connection of the Valve closing body, for example spherical is formed on the with a slot taper trained end of the connecting part by a 360 ° completely circumferential weld seam achievable, which is a very possesses high dynamic strength.

Von Vorteil ist es, am dem Ventilschließkörper zugewandten unteren Ende des Verbindungsteils am Umfang dem Schlitz genau gegenüberliegend eine Ausklinkung vorzusehen, mit der ein sicheres Ausspülen der Ventilnadel gewährleistet wird. In vorteilhafter Weise weist die Ausklinkung eine Tropfenform auf, wobei unmittelbar an der unteren Stirnseite des Verbindungsteils eine sehr geringe Öffnungsweite vorliegt. Somit wird die Gefahr einer Unterbrechung der Schweißnaht deutlich herabgesetzt. Einfallstellen der Schweißnaht an der Ausklinkung wären jedoch unkritisch, da die dynamische Belastung sehr viel geringer ist als am über die gesamte axiale Länge des Verbindungsteils verlaufenden Schlitz.It is advantageous to face the valve closing body lower end of the connecting part at the circumference of the slot provide a notch opposite, with which a safe rinsing of the valve needle is guaranteed. The notch advantageously has a Teardrop shape, being directly on the lower face of the connecting part has a very small opening width is present. Thus the risk of an interruption of the Weld seam significantly reduced. Sink marks of The weld seam on the notch would not be critical, however the dynamic load is much lower than the above the entire axial length of the connecting part Slot.

Ebenfalls vorteilhaft ist es, die Wandung des Verbindungsteils mit mehreren sie durchdringenden Strömungsöffnungen zu versehen, um eine unerwünschte Beeinflussung des abgespritzten Brennstoffs durch die Strömungsverhältnisse im Ventil zu vermeiden.It is also advantageous to the wall of the Connecting part with several penetrating Flow openings to provide an undesirable Influencing the sprayed fuel by the Avoid flow conditions in the valve.

Zeichnungdrawing

Ausführungsbeispiele der Erfindung sind in der Zeichnung vereinfacht dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen Figur 1 ein teilweise dargestelltes elektromagnetisch betätigbares Ventil, Figur 2 einen Blechabschnitt zur Ausformung eines Verbindungsteils einer axial bewegbaren Ventilnadel und Figur 3 ein Verbindungsteil als Einzelbauteil.Embodiments of the invention are in the drawing shown in simplified form and in the following Description explained in more detail. 1 shows it partially shown electromagnetically actuated Valve, Figure 2 shows a sheet metal section for forming a Connecting part of an axially movable valve needle and Figure 3 shows a connecting part as a single component.

Beschreibung der AusführungsbeispieleDescription of the embodiments

In der Figur 1 ist als ein Ausführungsbeispiel ein elektromagnetisch betätigbares Ventil in der Form eines Einspritzventils für Brennstoffeinspritzanlagen von gemischverdichtenden fremdgezündeten Brennkraftmaschinen teilweise dargestellt. Das Ventil hat einen rohrförmigen Ventilsitzträger 1, in dem konzentrisch zu einer Ventillängsachse 2 eine Längsbohrung 3 ausgebildet ist. In der Längsbohrung 3 ist eine axial bewegliche Ventilnadel 6 angeordnet.In Figure 1 is an embodiment Electromagnetically actuated valve in the form of a Injector for fuel injection systems from mixture-compression-ignition internal combustion engines partially shown. The valve has a tubular one Valve seat support 1, in the concentric to one Longitudinal valve axis 2, a longitudinal bore 3 is formed. In the longitudinal bore 3 is an axially movable valve needle 6 arranged.

Die elektromagnetische Betätigung des Ventils erfolgt in bekannter Weise. Zur axialen Bewegung der Ventilnadel 6 und damit zum Öffnen entgegen der Federkraft einer Rückstellfeder 8 bzw. Schließen des Ventils dient ein nur teilweise dargestellter elektromagnetischer Kreis mit einer Magnetspule 10, einem Kern 11 und einem Anker 12. Die Ventilnadel 6 wird von dem Anker 12, einem beispielsweise kugelförmigen Ventilschließkörper 13 und einem die beiden Einzelteile verbindenden Verbindungsteil 14 gebildet, wobei das Verbindungsteil 14 eine rohrförmige Gestalt aufweist. Die Rückstellfeder 8 stützt sich mit ihrem unteren Ende an der oberen Stirnfläche des Verbindungsteils 14 ab. Der Anker 12 ist mit dem dem Ventilschließkörper 13 abgewandten Ende des Verbindungsteils 14 durch eine Schweißnaht 15 verbunden und auf den Kern 11 ausgerichtet. Andererseits ist auch der Ventilschließkörper 13 mit dem dem Anker 12 abgewandten Ende des Verbindungsteils 14 z.B. mit einer Schweißnaht 16 fest verbunden. Die Magnetspule 10 umgibt den Kern 11, der das sich durch die Magnetspule 10 umschließende Ende eines nicht näher gekennzeichneten Brennstoffeinlaßstutzens, der der Zufuhr des mittels des Ventils zuzumessenden Mediums, hier Brennstoff, dient, darstellt.The valve is actuated electromagnetically in known way. For the axial movement of the valve needle 6 and to open against the spring force of one Return spring 8 or closing the valve only serves partially shown electromagnetic circuit with a Solenoid 10, a core 11 and an armature 12. Die Valve needle 6 is removed from armature 12, for example one spherical valve closing body 13 and one of the two Connecting parts 14 connecting parts formed, wherein the connecting part 14 has a tubular shape. The return spring 8 is supported with its lower end the upper end face of the connecting part 14. The anchor 12 is with the end facing away from the valve closing body 13 of the connecting part 14 connected by a weld 15 and aligned with the core 11. On the other hand, too Valve closing body 13 with the end facing away from the armature 12 the connecting part 14 e.g. with a weld 16 tight connected. The magnetic coil 10 surrounds the core 11, which end of the magnet coil 10 not enclosing one fuel inlet connector, the the Supply of the medium to be measured by means of the valve, here Fuel, serves, represents.

Mit dem unteren Ende des Kerns 11 sowie mit dem Ventilsitzträger 1 ist konzentrisch zur Ventillängsachse 2 dicht ein rohrförmiges, metallenes Zwischenteil 19 beispielsweise durch Schweißen verbunden. In das stromabwärts liegende, dem Kern 11 abgewandte Ende des Ventilsitzträgers 1 ist in der konzentrisch zur Ventillängsachse 2 verlaufenden Längsbohrung 3 ein zylinderförmiger Ventilsitzkörper 25 durch Schweißen dicht montiert. Der Ventilsitzkörper 25 weist dem Kern 11 zugewandt einen festen Ventilsitz 26 auf.With the lower end of the core 11 and with the Valve seat carrier 1 is concentric with the valve longitudinal axis 2 tightly a tubular, metallic intermediate part 19 connected for example by welding. In the downstream end of the core 11 facing away from the core Valve seat support 1 is concentric with Valve longitudinal axis 2 extending longitudinal bore 3 cylindrical valve seat body 25 tight by welding assembled. The valve seat body 25 has the core 11 facing a fixed valve seat 26.

Die Magnetspule 10 ist von wenigstens einem beispielsweise als Bügel ausgebildeten, als ferromagnetisches Element dienenden Leitelement 30 in Umfangsrichtung wenigstens teilweise umgeben, das mit seinem einen Ende an dem Kern 11 und mit seinem anderen Ende an dem Ventilsitzträger 1 anliegt und mit diesen z.B. durch Schweißen, Löten oder eine Klebeverbindung verbunden ist.The solenoid 10 is of at least one, for example trained as a bracket, as a ferromagnetic element serving guide element 30 in the circumferential direction at least partially surrounded, the one end of the core 11th and with its other end on the valve seat support 1 is applied and with these e.g. by welding, soldering or one Adhesive connection is connected.

Zur Führung des Ventilschließkörpers 13 während der Axialbewegung dient eine Führungsöffnung 31 des Ventilsitzkörpers 25. An seiner einen, dem Ventilschließkörper 13 abgewandten unteren Stirnseite 32 ist der Ventilsitzkörper 25 mit einer z.B. topfförmig ausgebildeten Spritzlochscheibe 34 konzentrisch und fest verbunden. Die Verbindung von Ventilsitzkörper 25 und Spritzlochscheibe 34 erfolgt beispielsweise durch eine umlaufende und dichte, z.B. mittels eines Lasers ausgebildete Schweißnaht 45. Durch diese Art der Montage ist die Gefahr einer unerwünschten Verformung der Spritzlochscheibe 34 im Bereich seiner wenigstens einen, beispielsweise vier durch Erodieren oder Stanzen ausgeformten Abspritzöffnungen 46 vermieden.To guide the valve closing body 13 during the Axial movement serves a guide opening 31 of the Valve seat body 25. At its one, the Valve closing body 13 facing away from the lower end face 32 the valve seat body 25 with a e.g. cup-shaped trained spray plate 34 concentric and firm connected. The connection of valve seat body 25 and Spray plate 34 is carried out, for example, by a circumferential and dense, e.g. using a laser trained weld 45. This type of assembly is the risk of undesired deformation of the Spray plate 34 in the area of its at least one, for example four by eroding or punching molded spray openings 46 avoided.

Die Einschubtiefe des aus Ventilsitzkörper 25 und Spritzlochscheibe 34 bestehenden Ventilsitzteils in die Längsbohrung 3 bestimmt u.a. die Einstellung des Hubs der Ventilnadel 6, da die eine Endstellung der Ventilnadel 6 bei nicht erregter Magnetspule 10 durch die Anlage des Ventilschließkörpers 13 an der Fläche des Ventilsitzes 26 des Ventilsitzkörpers 25 festgelegt ist. Die andere Endstellung der Ventilnadel 6 wird bei erregter Magnetspule 10 beispielsweise durch die Anlage einer oberen Stirnseite 22 des Ankers 12 an einer unteren Stirnseite 35 des Kerns 11 festgelegt. Der Weg zwischen diesen beiden Endstellungen der Ventilnadel 6 stellt den Hub dar.The insertion depth of the valve seat body 25 and Spray plate 34 existing valve seat part in the Longitudinal bore 3 determines i.a. the adjustment of the stroke of the Valve needle 6, since the one end position of the valve needle 6 at non-excited solenoid 10 by the system of Valve closing body 13 on the surface of the valve seat 26 of the valve seat body 25 is fixed. The other The end position of the valve needle 6 is when the solenoid is excited 10 for example by creating an upper end face 22 of the armature 12 on a lower end face 35 of the core 11 established. The path between these two end positions Valve needle 6 represents the stroke.

Der kugelförmige Ventilschließkörper 13 wirkt mit der sich in Strömungsrichtung kegelstumpfförmig verjüngenden Fläche des Ventilsitzes 26 des Ventilsitzkörpers 25 zusammen, die stromabwärts der Führungsöffnung 31 des Ventilsitzkörpers 25 ausgebildet ist. Die Führungsöffnung 31 weist wenigstens einen Strömungsdurchlaß 27 auf, der eine Strömung des Mediums in Richtung zum Ventilsitz 26 des Ventilsitzkörpers 25 ermöglicht. Andererseits können auch am Ventilschließkörper 13 Strömungsdurchlässe in Form von Nuten oder Abflachungen vorgesehen sein.The spherical valve closing body 13 interacts with the surface tapering in the direction of the flow of the valve seat 26 of the valve seat body 25 together, the downstream of the guide opening 31 of the valve seat body 25 is trained. The guide opening 31 has at least a flow passage 27 on a flow of the Medium in the direction of the valve seat 26 of the valve seat body 25 allows. On the other hand, on Valve closing body 13 flow passages in the form of grooves or flattening may be provided.

In der Figur 3 ist das erfindungsgemäße Verbindungsteil 14 der Ventilnadel 6 nochmals als Einzelbauteil vor dem Erzielen der festen Verbindungen mit dem Anker 12 und dem Ventilschließkörper 13 dargestellt, während die Figur 2 einen Blechabschnitt 50 zeigt, aus dem das Verbindungsteil 14 herstellbar ist. Am stromaufwärtigen Ende des Verbindungsteils 14 ist beispielsweise eine Fase 48 ringförmig ausgeformt. In der Wandung des rohr- bzw. hülsenförmigen Verbindungsteils 14 ist ein langgestreckter, die Wandung radial vollständig durchdringender Schlitz 51 vorgesehen, der sich über die gesamte Länge des Verbindungsteils 14 erstreckt, dabei jedoch mindestens zwei axial verlaufende Bereiche unterschiedlicher Schlitzbreite bzw. -weite in Umfangsrichtung des Verbindungsteils 14 aufweist.3 shows the connecting part 14 according to the invention the valve needle 6 again as a single component before Achieve the firm connections with the anchor 12 and the Valve closing body 13 shown, while FIG. 2 shows a sheet metal section 50 from which the connecting part 14 can be produced. At the upstream end of the The connecting part 14 is, for example, a chamfer 48 shaped like a ring. In the wall of the pipe or sleeve-shaped connecting part 14 is an elongated, slot 51 penetrating completely through the wall provided that extends over the entire length of the Connecting part 14 extends, but at least two axially extending areas of different slot widths or width in the circumferential direction of the connecting part 14 having.

Durch den Schlitz 51 gelangt der aus dem Kern 11 in eine innere Längsöffnung 52 zuströmende Brennstoff nach außen in die Längsbohrung 3 des Ventilsitzträgers 1. Über die Strömungsdurchlässe 27 im Ventilsitzkörper 25 oder am Umfang des Ventilschließkörpers 13 gelangt der Brennstoff bis zum Ventilsitz 26 und zu den stromabwärts vorgesehenen Abspritzöffnungen 46, über die der Brennstoff in ein Saugrohr oder einen Zylinder einer Brennkraftmaschine abgespritzt wird. Der Schlitz 51 stellt einen großflächigen hydraulischen Strömungsquerschnitt dar, über den der Brennstoff sehr schnell aus der inneren Längsöffnung 52 in die Längsbohrung 3 gelangen kann. Das dünnwandige Verbindungsteil 14 gewährleistet bei geringstem Gewicht größte Stabilität.Through the slot 51, the core 11 enters one inner longitudinal opening 52 inflowing fuel to the outside in the longitudinal bore 3 of the valve seat carrier 1. About the Flow passages 27 in the valve seat body 25 or on the circumference of the valve closing body 13, the fuel reaches Valve seat 26 and to those provided downstream Spray openings 46 through which the fuel in a Intake pipe or a cylinder of an internal combustion engine is hosed. The slot 51 represents a large area hydraulic flow cross section through which the Fuel very quickly from the inner longitudinal opening 52 in the longitudinal bore 3 can reach. The thin-walled Connecting part 14 ensures the lowest weight greatest stability.

Um eine unerwünschte Beeinflussung der Strahlform des aus den Abspritzöffnungen 46 abgespritzten Brennstoffs durch den zum Ventilsitz 26 eventuell unsymmetrisch strömenden Brennstoff zu vermeiden, wird das Verbindungsteil 14 optional mit mehreren Strömungsöffnungen 55 versehen, die die Wandung des Verbindungsteils 14 durchdringen. Die beispielsweise kreisförmigen und durch Stanzen bereits in den Blechabschnitt 50 eingebrachten Strömungsöffnungen 55 sind beispielhaft nur im Blechabschnitt 50 der Figur 2 und am Verbindungsteil 14 in Figur 3 dargestellt. Die z.B. zwölf Strömungsöffnungen 55 sind dabei in sich abwechselnden Zweier- und Dreierreihen im Blechabschnitt 50 angeordnet. Abänderungen bezüglich Anzahl und Lage der Strömungsöffnungen 55 sind problemlos realisierbar.To undesirably affect the beam shape of the the sprayed out openings 46 by the fuel to the valve seat 26 possibly flowing asymmetrically To avoid fuel, the connecting part 14th optionally provided with a plurality of flow openings 55 which penetrate the wall of the connecting part 14. The for example circular and already punched in the flow openings 55 introduced into the sheet metal section 50 are exemplary only in the sheet metal section 50 of Figures 2 and shown on the connecting part 14 in Figure 3. The e.g. twelve Flow openings 55 are alternating Rows of two and three are arranged in the sheet metal section 50. Changes in number and location of Flow openings 55 can be easily implemented.

Die Herstellung des Verbindungsteils 14 erfolgt derart, daß aus einem ebenen, die Dicke der Rohrwandung des Verbindungsteils 14 aufweisenden Metallblech Blechabschnitte 50, wie einer in Figur 2 dargestellt ist, mit weitgehend rechteckiger Form beispielsweise durch Stanzen hergestellt werden. Die Blechabschnitte 50 weisen eine längere und eine kürzere Erstreckung auf, wobei die längere Erstreckung der Länge des herzustellenden Verbindungsteils 14 in axialer Richtung und die kürzere Erstreckung etwa dem Umfang des herzustellenden Verbindungsteils 14 entsprechen. An ihrem einem Ende 56, an dem der Ventilschließkörper 13 später befestigt wird, besitzen die Blechabschnitte 50 an ihren beiden Längsseiten minimal über die ansonsten rechteckförmige Kontur hinausstehende, symmetrische Aufweitungen bzw. Verbreiterungen 57.The connection part 14 is produced in such a way that from a flat, the thickness of the tube wall of the Connecting part 14 having sheet metal sections 50, as one is shown in Figure 2, with largely rectangular shape made for example by stamping become. The sheet metal sections 50 have a longer and one shorter extension, the longer extension of the Length of the connecting part 14 to be produced in axial Direction and the shorter extension approximately the circumference of the to be produced connecting part 14 correspond. On hers one end 56 at which the valve closing body 13 later is attached, have the sheet metal sections 50 on their both long sides minimally over the otherwise rectangular contour protruding, symmetrical Widening or widening 57.

Nach dem Ausstanzen der Blechabschnitte 50 mit oben beschriebener Kontur wird jeder Blechabschnitt etwa unter Zuhilfenahme eines Dornes in die Form des gewünschten Verbindungsteils 14 gerollt bzw. gebogen. Dabei bilden die jeweils langgestreckten Stirnflächen des das Verbindungsteil 14 bildenden Blechabschnitts 50 den Schlitz 51, indem sie mit geringem Abstand einander gegenüberliegen. Während die Breite des Schlitzes 51 in Umfangsrichtung über den größten Teil seiner Längserstreckung beispielsweise ca. 0,5 mm beträgt, ergibt sich im Bereich der Aufweitungen 57 ein Schlitzbereich 58 mit einer Verkleinerung der Breite des Schlitzes auf ca. 0,1 mm.After punching out the sheet metal sections 50 with the top Contour is described under each sheet metal section Using a mandrel in the shape of the desired one Connecting part 14 rolled or bent. Thereby form the each elongated end faces of the connecting part 14 forming sheet metal section 50, the slot 51 by face each other at a short distance. While the Width of the slot 51 in the circumferential direction over the largest Part of its longitudinal extent, for example, about 0.5 mm amounts to 57 in the area of the widenings Slot area 58 with a reduction in the width of the Slot to approx. 0.1 mm.

Am unteren Ende 56 des Blechabschnitts 50 ist optional eine Ausklinkung 59 vorgesehen, die z.B. so angeordnet ist, daß sie am Umfang des gerollten Verbindungsteils 14 dem Schlitz 51 genau gegenüberliegt. Die beispielsweise tropfenförmig ausgebildete Ausklinkung 59 weist an der unteren Stirnseite 60 nur eine geringe Öffnungsweite auf, die jedoch von der Stirnseite 60 entfernt breiter, weiter oder bauchiger ausgeführt ist. Von der in Figur 2 dargestellten Kontur abweichende Konturen (kolbenförmig, ballonförmig, umgekehrt U-förmig) der Ausklinkung 59 sind ebenso denkbar. Durch die Ausklinkung 59 wird vermieden, daß nach dem Anschweißen des Ventilschließkörpers 13 aufgrund des sehr schmalen Schlitzes 51 im Schlitzbereich 58 am unteren Ende 56 ein Sackloch in dem Verbindungsteil 14 entsteht. Ein sicheres Ausspülen der Ventilnadel 6 wird also voll gewährleistet. At the lower end 56 of the sheet metal section 50 there is an optional one Notch 59 is provided which e.g. is arranged so that the slot at the periphery of the rolled connecting part 14 51 is exactly opposite. The drop-shaped, for example trained notch 59 has on the lower end face 60 only a small opening width, which, however, from the Face 60 is wider, wider, or bulbous is executed. From the contour shown in Figure 2 deviating contours (piston-shaped, balloon-shaped, vice versa U-shaped) of the notch 59 are also conceivable. Through the Notching 59 is avoided that after welding the Valve closing body 13 due to the very narrow slot 51 in the slot area 58 at the lower end 56 a blind hole in the connecting part 14 is formed. A safe rinsing out of the Valve needle 6 is therefore fully guaranteed.

Die Fertigung des Verbindungsteils 14 aus einem Blechabschnitt 50 stellt eine besonders leichte und einfache Herstellungsart dar, die den Einsatz unterschiedlicher Materialien ermöglicht und die eine Serienfertigung in großen Stückzahlen erlaubt. Durch das Vorsehen des Schlitzes 51 im Verbindungsteil 14 ist das Verbindungsteil 14 federelastisch, so daß für die innere Öffnung des Ankers 12 und das Verbindungsteil 14 selbst relativ grobe Toleranzen gewählt werden können. Durch die federelastische Nachgiebigkeit ist das Verbindungsteil 14 unter Spannung in die innere Öffnung des Ankers 12 einschiebbar.The manufacture of the connecting part 14 from one Sheet metal section 50 is a particularly light and simple Production method, which means the use of different Materials and which enables series production in large quantities allowed. By providing the slot 51 in the connecting part 14 is the connecting part 14 resilient so that for the inner opening of the armature 12th and the connecting part 14 itself relatively coarse tolerances can be chosen. Due to the resilient Resilience is the connector 14 under tension in the inner opening of the armature 12 can be inserted.

Durch die sehr geringe Öffnungsweite des Schlitzes 51 im Schlitzbereich 58 am Ende 56 bzw. der optional vorgesehenen Ausklinkung 59 an der Stirnseite 60 und dem damit fast rundum an dem Ventilschließkörper 13 anliegenden Verbindungsteil 14 ist die Schweißnaht 16 mit einer sehr hohen dynamischen Festigkeit erzielbar. Die Schweißnaht 16 zwischen Verbindungsteil 14 und Ventilschließkörper 13 wird z.B. mit Hilfe eines sogenannten Continuous Wave Lasers hergestellt. Dabei wird die Ventilnadel 6 unter dem kontinuierlichen Laserstrahl gedreht und durchgehend verschweißt. Durch die deutliche Verkleinerung des Schlitzes 51 werden gegenüber bekannten geschlitzten Ventilnadelhülsen der verschweißte Querschnitt vergrößert und die Einfallstellen der Schweißnaht an den Schlitzrändern derart deutlich bis zur fast völligen Vermeidung reduziert, daß eine durchgehende Schweißnaht 16 weitgehend störungsfrei vorliegt. Die dynamische Belastung im Bereich der Ausklinkung 59 ist außerdem bei weitem geringer als bei einem über die gesamte Länge des Verbindungsteils 14 verlaufenden Schlitz, so daß eine eventuell auftretende minimale Unterbrechung der Schweißnaht 16 an der Ausklinkung 59 unkritisch wäre.Due to the very small opening width of the slot 51 in Slot area 58 at the end 56 or the optionally provided Notch 59 on the end face 60 and thus almost all around the valve closing body 13 Connecting part 14 is the weld 16 with a very high dynamic strength achievable. The weld seam 16 between connecting part 14 and valve closing body 13 e.g. with the help of a so-called continuous wave laser manufactured. The valve needle 6 under the continuous laser beam rotated and continuous welded. By significantly reducing the size of the slot 51 are compared to known slotted valve needle sleeves the welded cross section enlarged and the Sink marks of the weld seam at the slit edges in this way significantly reduced to almost complete avoidance that a continuous weld 16 largely trouble-free is present. The dynamic load in the area of Notch 59 is also far less than in one over the entire length of the connecting part 14 extending slot, so that a possibly occurring minimal interruption of the weld 16 at the notch 59 would be uncritical.

Claims (8)

  1. Electromagnetically actuable valve, in particular fuel injection valve for fuel injection systems of mixture-compressing spark-ignition internal combustion engines, with a valve longitudinal axis (2), with a core (11) at least partially surrounded by a magnet coil (10), with an armature (12), with a valve-closing body (13) which cooperates with a valve seat (26), and with a tubular connecting part (14) connecting the armature (12) and the valve-closing body (13), the connecting part (14) being provided with a slot (51) which passes through the wall and runs over the entire axial length of the connecting part (14), characterized in that the slot (51) possesses at the end (56) facing the valve-closing body (13), in a slot region (58), a smaller orifice width than over its remaining axial extent.
  2. Valve according to Claim 1, characterized in that the connecting part (14) is formed from a metal sheet.
  3. Valve according to Claim 1 or 2, characterized in that the orifice width of the slot (51) at the end (56) amounts to only approximately 20% of the orifice width of its remaining extent.
  4. Valve according to one of the preceding claims, characterized in that the wall of the connecting part (14) is provided with at least one flow orifice (55) passing through said wall.
  5. Valve according to Claim 1, characterized in that at the end (56) of the connecting part (14) a notch (59) is provided on the circumference of the latter, and exactly opposite the slot (51), which notch is open towards a lower end face (60).
  6. Valve according to Claim 5, characterized in that the notch (59) is shaped in the form of a drop, the orifice width narrowing towards the lower end face (60).
  7. Valve according to Claim 2, characterized in that the connecting part (14) is capable of being produced by stamping and subsequent rolling or bending.
  8. Valve according to Claim 7, characterized in that a metal-sheet portion (50) stamped out of the metal sheet in order to produce the connecting part (14) has an essentially rectangular shape, widenings (57) which project slightly on the longitudinal sides of the metal-sheet portion (50) being provided at one end (56) of the latter.
EP98945005A 1997-09-11 1998-07-17 Electromagnetically operated valve Expired - Lifetime EP0937201B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19739850 1997-09-11
DE19739850A DE19739850A1 (en) 1997-09-11 1997-09-11 Electromagnetically actuated valve
PCT/DE1998/002003 WO1999013212A1 (en) 1997-09-11 1998-07-17 Electromagnetically operated valve

Publications (2)

Publication Number Publication Date
EP0937201A1 EP0937201A1 (en) 1999-08-25
EP0937201B1 true EP0937201B1 (en) 2002-07-10

Family

ID=7841950

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98945005A Expired - Lifetime EP0937201B1 (en) 1997-09-11 1998-07-17 Electromagnetically operated valve

Country Status (8)

Country Link
US (1) US6089475A (en)
EP (1) EP0937201B1 (en)
JP (1) JP3998729B2 (en)
KR (1) KR100573185B1 (en)
CN (1) CN1091218C (en)
BR (1) BR9806168A (en)
DE (2) DE19739850A1 (en)
WO (1) WO1999013212A1 (en)

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6047907A (en) 1997-12-23 2000-04-11 Siemens Automotive Corporation Ball valve fuel injector
US20010002680A1 (en) 1999-01-19 2001-06-07 Philip A. Kummer Modular two part fuel injector
GB9914642D0 (en) * 1999-06-24 1999-08-25 Lucas Ind Plc Fuel injector
DE10014962A1 (en) * 2000-03-25 2001-10-04 Gsf Forschungszentrum Umwelt Pulsable capillary valve
US6676044B2 (en) * 2000-04-07 2004-01-13 Siemens Automotive Corporation Modular fuel injector and method of assembling the modular fuel injector
US6481646B1 (en) 2000-09-18 2002-11-19 Siemens Automotive Corporation Solenoid actuated fuel injector
US6655609B2 (en) 2000-12-29 2003-12-02 Siemens Automotive Corporation Modular fuel injector having a low mass, high efficiency electromagnetic actuator and having an integral filter and o-ring retainer assembly
US6508417B2 (en) 2000-12-29 2003-01-21 Siemens Automotive Corporation Modular fuel injector having a snap-on orifice disk retainer and having a lift set sleeve
US6502770B2 (en) 2000-12-29 2003-01-07 Siemens Automotive Corporation Modular fuel injector having a snap-on orifice disk retainer and having a terminal connector interconnecting an electromagnetic actuator with an electrical terminal
US6520421B2 (en) 2000-12-29 2003-02-18 Siemens Automotive Corporation Modular fuel injector having an integral filter and o-ring retainer
US6695232B2 (en) 2000-12-29 2004-02-24 Siemens Automotive Corporation Modular fuel injector having interchangeable armature assemblies and having a lift set sleeve
US6533188B1 (en) 2000-12-29 2003-03-18 Siemens Automotive Corporation Modular fuel injector having a snap-on orifice disk retainer and having an integral filter and dynamic adjustment assembly
US6511003B2 (en) 2000-12-29 2003-01-28 Siemens Automotive Corporation Modular fuel injector having an integral or interchangeable inlet tube and having a terminal connector interconnecting an electromagnetic actuator with an electrical terminal
US6550690B2 (en) 2000-12-29 2003-04-22 Siemens Automotive Corporation Modular fuel injector having interchangeable armature assemblies and having an integral filter and dynamic adjustment assembly
US6536681B2 (en) 2000-12-29 2003-03-25 Siemens Automotive Corporation Modular fuel injector having a surface treatment on an impact surface of an electromagnetic actuator and having an integral filter and O-ring retainer assembly
US6708906B2 (en) * 2000-12-29 2004-03-23 Siemens Automotive Corporation Modular fuel injector having a surface treatment on an impact surface of an electromagnetic actuator and having an integral filter and dynamic adjustment assembly
US6811091B2 (en) 2000-12-29 2004-11-02 Siemens Automotive Corporation Modular fuel injector having an integral filter and dynamic adjustment assembly
US6499668B2 (en) 2000-12-29 2002-12-31 Siemens Automotive Corporation Modular fuel injector having a surface treatment on an impact surface of an electromagnetic actuator and having a terminal connector interconnecting an electromagnetic actuator with an electrical terminal
US6523761B2 (en) 2000-12-29 2003-02-25 Siemens Automotive Corporation Modular fuel injector having an integral or interchangeable inlet tube and having a lift set sleeve
US6565019B2 (en) 2000-12-29 2003-05-20 Seimens Automotive Corporation Modular fuel injector having a snap-on orifice disk retainer and having an integral filter and O-ring retainer assembly
US6769636B2 (en) 2000-12-29 2004-08-03 Siemens Automotive Corporation Modular fuel injector having interchangeable armature assemblies and having an integral filter and O-ring retainer assembly
US6523760B2 (en) 2000-12-29 2003-02-25 Siemens Automotive Corporation Modular fuel injector having interchangeable armature assemblies and having a terminal connector interconnecting an electromagnetic actuator with an electrical terminal
US6523756B2 (en) 2000-12-29 2003-02-25 Siemens Automotive Corporation Modular fuel injector having a low mass, high efficiency electromagnetic actuator and having a lift set sleeve
US6547154B2 (en) 2000-12-29 2003-04-15 Siemens Automotive Corporation Modular fuel injector having a terminal connector interconnecting an electromagnetic actuator with a pre-bent electrical terminal
US6568609B2 (en) 2000-12-29 2003-05-27 Siemens Automotive Corporation Modular fuel injector having an integral or interchangeable inlet tube and having an integral filter and o-ring retainer assembly
US6607143B2 (en) 2000-12-29 2003-08-19 Siemens Automotive Corporation Modular fuel injector having a surface treatment on an impact surface of an electromagnetic actuator and having a lift set sleeve
US6520422B2 (en) 2000-12-29 2003-02-18 Siemens Automotive Corporation Modular fuel injector having a low mass, high efficiency electromagnetic actuator and having a terminal connector interconnecting an electromagnetic actuator with an electrical terminal
US6698664B2 (en) 2000-12-29 2004-03-02 Siemens Automotive Corporation Modular fuel injector having an integral or interchangeable inlet tube and having an integral filter and dynamic adjustment assembly
US6676043B2 (en) 2001-03-30 2004-01-13 Siemens Automotive Corporation Methods of setting armature lift in a modular fuel injector
US6687997B2 (en) 2001-03-30 2004-02-10 Siemens Automotive Corporation Method of fabricating and testing a modular fuel injector
US7093362B2 (en) 2001-03-30 2006-08-22 Siemens Vdo Automotive Corporation Method of connecting components of a modular fuel injector
US6904668B2 (en) 2001-03-30 2005-06-14 Siemens Vdo Automotive Corp. Method of manufacturing a modular fuel injector
US7621469B2 (en) * 2006-11-29 2009-11-24 Continental Automotive Canada, Inc. Automotive modular LPG injector
KR101134836B1 (en) * 2010-08-27 2012-04-13 현대자동차주식회사 Injector for Engine
JP5995073B2 (en) * 2012-09-28 2016-09-21 株式会社ケーヒン Fuel injection valve
JP6061074B2 (en) * 2012-09-28 2017-01-18 株式会社ケーヒン Fuel injection valve
JP5990848B2 (en) * 2012-09-28 2016-09-14 株式会社ケーヒン Fuel injection valve

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3831196A1 (en) * 1988-09-14 1990-03-22 Bosch Gmbh Robert ELECTROMAGNETICALLY ACTUABLE VALVE
DE4003228A1 (en) * 1990-02-03 1991-08-22 Bosch Gmbh Robert ELECTROMAGNETICALLY ACTUABLE VALVE
DE4008675A1 (en) 1990-03-17 1991-09-19 Bosch Gmbh Robert ELECTROMAGNETICALLY ACTUABLE VALVE
US5199648A (en) * 1991-03-20 1993-04-06 Zexel Corporation Fuel injection valve
DE4131500A1 (en) * 1991-09-21 1993-03-25 Bosch Gmbh Robert ELECTROMAGNETICALLY OPERATED INJECTION VALVE
DE4229730A1 (en) * 1992-09-05 1994-03-10 Bosch Gmbh Robert Electromagnetically actuated fuel injector

Also Published As

Publication number Publication date
US6089475A (en) 2000-07-18
EP0937201A1 (en) 1999-08-25
KR20000068946A (en) 2000-11-25
CN1239535A (en) 1999-12-22
JP2001504917A (en) 2001-04-10
BR9806168A (en) 1999-10-19
WO1999013212A1 (en) 1999-03-18
DE19739850A1 (en) 1999-03-18
JP3998729B2 (en) 2007-10-31
DE59804720D1 (en) 2002-08-14
CN1091218C (en) 2002-09-18
KR100573185B1 (en) 2006-04-24

Similar Documents

Publication Publication Date Title
EP0937201B1 (en) Electromagnetically operated valve
EP0871822B1 (en) Electromagnetically controlled valve
EP0772738B1 (en) Electromagnetically operated valve
DE19641785C2 (en) Valve needle for an injection valve
EP0812389B1 (en) Fuel injection valve
EP1877660B1 (en) Fuel injection valve and method for the assembly thereof
DE19638201A1 (en) Fuel injection valve for IC engines
DE19712590A1 (en) Electromagnetically actuated valve
WO1996003579A1 (en) Valve needle for an electromagnetic valve and method of producing the same
DE4109868A1 (en) ADJUSTING SOCKET FOR AN ELECTROMAGNETICALLY ACTUABLE VALVE AND METHOD FOR THE PRODUCTION THEREOF
EP1062421B1 (en) Fuel injector
EP0717816B1 (en) Electromagnetically actuated valve
EP0383063B1 (en) Magnet armature
EP0937200B1 (en) Electromagnetically actuated valve
EP0383064A1 (en) Magnet armature
EP1399669A1 (en) Fuel injection valve
EP0925441B1 (en) Electromagnetically actuated valve
EP1200729B1 (en) Method for adjusting the valve lift of an injection valve
WO1998055763A1 (en) Fuel injection valve
DE19503820C2 (en) Electromagnetically actuated valve and method for producing a guide on a valve
DE4018317C1 (en)
DE19751847A1 (en) Fuel injection valve
WO2003027489A1 (en) Fuel injection valve
DE102008055095A1 (en) Electromagnetically actuated valve, particularly fuel injection valve for fuel injection system of internal-combustion engines, has valve longitudinal axis, core partially surrounded by magnetic coil, armature and valve closing body

Legal Events

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

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE FR GB IT LI

17P Request for examination filed

Effective date: 19990920

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 20010920

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB IT LI

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: SCINTILLA AG, DIREKTION

REF Corresponds to:

Ref document number: 59804720

Country of ref document: DE

Date of ref document: 20020814

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

Effective date: 20020919

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

Free format text: ORIGINAL CODE: 0009261

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

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

26N No opposition filed

Effective date: 20030411

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

Ref country code: CH

Payment date: 20040723

Year of fee payment: 7

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

Ref country code: LI

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

Effective date: 20050731

Ref country code: CH

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

Effective date: 20050731

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: FR

Payment date: 20060719

Year of fee payment: 9

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

Ref country code: GB

Payment date: 20060721

Year of fee payment: 9

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

Effective date: 20070717

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

Ref country code: GB

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

Effective date: 20070717

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20080331

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

Ref country code: FR

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

Effective date: 20070731

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

Ref country code: IT

Payment date: 20140724

Year of fee payment: 17

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

Ref country code: IT

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

Effective date: 20150717

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

Ref country code: DE

Payment date: 20170927

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59804720

Country of ref document: DE