EP0513037B1 - Electromagnetically operated valve - Google Patents

Electromagnetically operated valve Download PDF

Info

Publication number
EP0513037B1
EP0513037B1 EP91902298A EP91902298A EP0513037B1 EP 0513037 B1 EP0513037 B1 EP 0513037B1 EP 91902298 A EP91902298 A EP 91902298A EP 91902298 A EP91902298 A EP 91902298A EP 0513037 B1 EP0513037 B1 EP 0513037B1
Authority
EP
European Patent Office
Prior art keywords
valve
fuel
injection
inlet pipe
magnetic coil
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
EP91902298A
Other languages
German (de)
French (fr)
Other versions
EP0513037A1 (en
Inventor
Peter Romann
Ferdinand Reiter
Rudolf Babitzka
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
Priority to EP94101334A priority Critical patent/EP0602001B1/en
Publication of EP0513037A1 publication Critical patent/EP0513037A1/en
Application granted granted Critical
Publication of EP0513037B1 publication Critical patent/EP0513037B1/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
    • 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
    • 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
    • F02M51/005—Arrangement of electrical wires and connections, e.g. wire harness, sockets, plugs; Arrangement of electronic control circuits in or on fuel injection apparatus
    • 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
    • F02M51/0614—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of electromagnets or fixed armature
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S239/00—Fluid sprinkling, spraying, and diffusing
    • Y10S239/90—Electromagnetically actuated fuel injector having ball and seat type valve
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor

Definitions

  • the invention relates to an electromagnetically actuated valve according to the preamble of patent claim 1.
  • a valve is also known, the solenoid of which is provided with a plastic coating and which is surrounded by the metal valve housing. Connection pins of the solenoid protrude from the valve housing and are enclosed by a plastic sheathing forming the connector.
  • valve according to the invention with the characterizing features of claim 1 has the advantage of simple manufacture and assembly, which allows inexpensive series production, since only one valve overmolding tool is required for various embodiments of the electrical connector. As a result, there is greater flexibility in assembly. Another advantage is that the magnetic coil is easy to handle and electrical connector existing plastic injection molding.
  • an axial gap is formed between the end face of the core end facing the armature and a shoulder of the intermediate part, in which, by clamping, a stroke which forms a residual air gap between the inlet-side end face of the armature and the core end, the stroke of the valve closing body during the opening process the valve-limiting non-magnetic stop disc is arranged.
  • the fuel inlet connector has a constant outer diameter over its entire length.
  • cylindrical valve seat body has a constant outer diameter.
  • a valve with the features of claim 6 enables a compact, short design of the valve.
  • FIG. 1 shows an exemplary embodiment of a valve designed according to the invention
  • FIG. 2 shows the independent plastic injection-molded part consisting of a magnetic coil and an electrical connector.
  • the electromagnetically actuated valve for example shown in FIG. 1, in the form of an injection valve for fuel injection systems of internal combustion engines, has a fuel inlet connection 1, which is surrounded by a magnet coil 4 and serves as the core, and which has a constant outer diameter, for example by means of centerless loops, over its entire length for the best possible use of space .
  • the magnet coil 4 with a coil body 2, as shown in FIG. 2 is provided with a plastic coating 7, at the same time an electrical connector plug 21 is also molded, so that there is an independent plastic injection part containing the magnet coil 4 and the connector plug 21.
  • the magnet coil 4 which has a stepped coil body 2 in the radial direction with a winding 13 which is stepped in the radial direction, in conjunction with the fuel inlet connector 1 having a constant outer diameter, enables a short and compact structure of the injection valve, as will be explained below.
  • a tubular metallic intermediate part 6 is connected by welding concentrically to a longitudinal valve axis 5 and partially overlaps the core end 3 with an upper cylinder section 41 axially.
  • the stepped bobbin 2 partially overlaps the fuel inlet connector 1 and, with a step 42 of larger diameter, the cylinder section 41 of the intermediate part 6.
  • the intermediate section 6 is provided at its end facing away from the fuel inlet connector 1 with a lower cylinder section 43 which engages over a tubular connecting part 14 and with it is tightly connected by welding.
  • a cylindrical valve seat body 8 is tightly mounted by welding. The lining up of fuel inlet connector 1, intermediate part 6, connecting part 14 and valve seat body 8 thus represents a rigid metal unit.
  • the valve seat body 8 has a constant outer diameter, for example formed by centerless grinding, so that the valve seat body 8 can be fully inserted into the connecting part 14 can and through the longer coverage better tightness between valve seat body 8 and the inner bore 30 of the connecting part 14 is achieved.
  • a tubular armature 12 is connected by welding, which is guided by a guide collar 15 of the intermediate part 6.
  • a valve closing body 10 which interacts with the valve seat 9 of the valve seat body 8, is connected to the latter, for example by soldering or welding, which is designed, for example, as a ball.
  • At least one spray opening 33 Downstream of the valve seat 9, at least one spray opening 33, for example formed by eroding, is formed in the valve seat body 8.
  • the weld seam 35 between the valve seat body 8 and the connecting part 14 is from the spray opening (s) 33 and relatively far away from the valve seat 9, so that an influence on quantity and leakage due to a distortion of the valve seat body 8 occurring due to the high temperatures occurring during welding is effectively prevented.
  • an axial gap 29 is formed, in which, by clamping, a residual air gap between the inlet-side end face 26 of the armature 12 and the end face 23 of the core end 3 forming, the stroke of the valve closing body 10 during the opening process of the valve limiting non-magnetic stop disc 27 is arranged.
  • the clamped stop disc 27 protects the end face 23 of the core end 3 because of its greater bending stiffness better from wear than a loose disc, in which there is a risk of tilting and uneven striking.
  • the magnet coil 4 is surrounded by at least one guide element 16, which is designed as a bracket in the exemplary embodiment and serves as a ferromagnetic element, which extends in the axial direction over the entire length of the magnet coil 4 and at least partially surrounds the magnet coil 4 in the circumferential direction and with one end thereof Fuel inlet connector 1 and with its other end on the connecting part 14 and z. B. is connected by welding.
  • a part of the valve is enclosed by a plastic sheathing 18, which extends axially from the fuel inlet connector 1, extends axially via the magnetic coil 4 with connector 21 and the at least one guide element 16, and thereby radially extending side faces of an annular groove provided on the circumference of the inlet-side end 44 of the fuel inlet connector 1 25 forms.
  • the bottom of the groove which for example has a sealing ring 45, has an annular groove 25 formed by the circumference of the fuel inlet port 1.
  • the plastic casing 18 engages in a holding groove 46 at the inlet end 44 of the fuel inlet connector 1.
  • the described plastic encapsulation 7 of the solenoid 4 in connection with the injection molded connector 21 allows a high degree of flexibility in the assembly of differently designed valves, since only one extrusion tool is required for connecting connectors 21 and solenoids 4 of different design to produce the plastic casing 18.
  • the magnet coil 4 which has the coil body 2 stepped in the radial direction with the winding 13 stepped in the radial direction, enables a compact and short design of the valve by projecting beyond the upper cylinder section 41 of the intermediate part 6 and thus causing the individual parts to be interleaved.

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)
  • Fuel-Injection Apparatus (AREA)
  • Magnetically Actuated Valves (AREA)
  • Electromagnets (AREA)

Abstract

In existing electromagnetically operated valves with a fuel-inlet pipe acting as the core of a coil magnet surrounding it, at least part of the valve is surrounded by a plastic shell with an integrally moulded connector plug. Different valve injection-moulding tools are necessary, however, for different designs of electric plug. With the new valve, the electric plug (21) is injection-moulded at the same time as the coil magnet surround (4) is moulded, thus forming an independent injection-moulded plastic part. Only one valve injection-moulding tool is necessary for different designs of electric plug, thus giving greater assembly-line flexibility. The valve is suitable for use in fuel-injection systems.

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einem elektromagnetisch betätigbaren Ventil nach der Gattung des Patentanspruchs 1.The invention relates to an electromagnetically actuated valve according to the preamble of patent claim 1.

In der DE-A-38 25 135 ist bereits ein elektromagnetisch betätigbares Ventil vorgeschlagen worden, bei dem zumindest ein Teil des Ventils von einer Kunststoffummantelung umschlossen wird und an die ein elektrischer Anschlußstecker angeformt ist. Je nach Ausführungsform des elektrischen Anschlußsteckers sind aber verschiedene Ventilumspritzungswerkzeuge erforderlich. Dies verhindert eine kostengünstige flexible Montage.In DE-A-38 25 135 an electromagnetically actuated valve has already been proposed, in which at least part of the valve is enclosed by a plastic jacket and to which an electrical connector is molded. Depending on the embodiment of the electrical connector, however, different valve extrusion tools are required. This prevents inexpensive flexible assembly.

Bekannt ist gemäß der GB-A-2 212 982 ebenfalls ein Ventil, dessen Magnetspule mit einer Kunststoffumspritzung versehen ist und die vom metallenen Ventilgehäuse umgeben wird. Anschlußpins der Magnetspule ragen aus dem Ventilgehäuse heraus und werden von einer den Anschlußstecker bildenden Kunststoffummantelung umschlossen.According to GB-A-2 212 982 a valve is also known, the solenoid of which is provided with a plastic coating and which is surrounded by the metal valve housing. Connection pins of the solenoid protrude from the valve housing and are enclosed by a plastic sheathing forming the connector.

Vorteile der ErfindungAdvantages of the invention

Das erfindungsgemäße Ventil mit den kennzeichnenden Merkmalen des Patentanspruchs 1 hat demgegenüber den Vorteil einer einfachen Herstellung und Montage, was eine kostengünstige Serienfertigung erlaubt, da für verschiedene Ausführungsformen des elektrischen Anschlußsteckers nur noch ein Ventilumspritzungswerkzeug erforderlich ist. Als Folge ergibt sich eine größere Flexibilität bei der Montage. Als weiterer Vorteil ist eine gute Handhabbarkeit des aus Magnetspule und elektrischem Anschlußstecker bestehenden Kunststoffspritzteiles zu nennen.The valve according to the invention with the characterizing features of claim 1 has the advantage of simple manufacture and assembly, which allows inexpensive series production, since only one valve overmolding tool is required for various embodiments of the electrical connector. As a result, there is greater flexibility in assembly. Another advantage is that the magnetic coil is easy to handle and electrical connector existing plastic injection molding.

Durch die in den abhängigen Ansprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen des im Patentanspruch 1 angegebenen Ventils möglich.The measures listed in the dependent claims allow advantageous developments and improvements of the valve specified in claim 1.

Besonders vorteilhaft ist es, am Umfang des zulaufseitigen Endes des Brennstoffeinlaßstutzens eine Ringnut vorzusehen, deren radial sich erstreckende Seitenflächen durch die einen Teil des Ventils umschließende Kunststoffummantelung und deren Nutgrund durch den Umfang des Brennstoffeinlaßstutzens gebildet wird.It is particularly advantageous to provide an annular groove on the circumference of the inlet-side end of the fuel inlet connector, the radially extending side surfaces of which are formed by the plastic casing surrounding part of the valve and the groove base of which is formed by the circumference of the fuel inlet connector.

Vorteilhaft ist es auch, wenn zwischen der Stirnfläche des dem Anker zugewandten Kernendes und einer Schulter des Zwischenteiles ein axialer Spalt gebildet ist, in dem durch Einklemmen eine, einen Restluftspalt zwischen der zulaufseitigen Stirnseite des Ankers und dem Kernende bildende, den Hub des Ventilschließkörpers beim Öffnungsvorgang des Ventils begrenzende nichtmagnetische Anschlagscheibe angeordnet ist.It is also advantageous if an axial gap is formed between the end face of the core end facing the armature and a shoulder of the intermediate part, in which, by clamping, a stroke which forms a residual air gap between the inlet-side end face of the armature and the core end, the stroke of the valve closing body during the opening process the valve-limiting non-magnetic stop disc is arranged.

Es ist ebenfalls vorteilhaft, wenn der Brennstoffeinlaßstutzen über seine gesamte Länge einen konstanten Außendurchmesser aufweist.It is also advantageous if the fuel inlet connector has a constant outer diameter over its entire length.

Besonders vorteilhaft ist es, wenn der zylinderförmige Ventilsitzkörper einen konstanten Außendurchmesser aufweist.It is particularly advantageous if the cylindrical valve seat body has a constant outer diameter.

Ein Ventil mit den Merkmalen des Patentanspruchs 6 ermöglicht eine kompakte kurze Bauform des Ventils.A valve with the features of claim 6 enables a compact, short design of the valve.

Zeichnungdrawing

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung vereinfacht dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen Figur 1 ein Ausführungsbeispiel eines erfindungsgemäß ausgestalteten Ventils und Figur 2 das aus Magnetspule und elektrischem Anschlußstecker bestehende eigenständige Kunststoffspritzteil.An embodiment of the invention is shown in simplified form in the drawing and explained in more detail in the following description. FIG. 1 shows an exemplary embodiment of a valve designed according to the invention, and FIG. 2 shows the independent plastic injection-molded part consisting of a magnetic coil and an electrical connector.

Beschreibung des AusführungsbeispielsDescription of the embodiment

Das in der Figur 1 beispielsweise dargestellte elektromagnetisch betätigbare Ventil in Form eines Einspritzventils für Brennstoffeinspritzanlagen von Brennkraftmaschinen hat einen von einer Magnetspule 4 umgebenen als Kern dienenden Brennstoffeinlaßstutzen 1, der zur bestmöglichen Raumausnutzung über seine gesamte Länge einen konstanten, beispielsweise mittels Centerless-Schleifen ausgebildeten Außendurchmesser aufweist. Die Magnetspule 4 mit einem Spulenkörper 2 ist, wie in der Figur 2 dargestellt, mit einer Kunststoffumspritzung 7 versehen, wobei zugleich ein elektrischer Anschlußstecker 21 mitangespritzt wird, so daß sich ein die Magnetspule 4 und den Anschlußstecker 21 beinhaltendes eigenständiges Kunststoffspritzteil ergibt. Die in radialer Richtung einen gestuften Spulenkörper 2 mit einer in radialer Richtung gestuften Bewicklung 13 aufweisende Magnetspule 4 ermöglicht in Verbindung mit dem einen konstanten Außendurchmesser aufweisenden Brennstoffeinlaßstutzen 1 einen kurzen und kompakten Aufbau des Einspritzventils, wie anschließend erläutert wird.The electromagnetically actuated valve, for example shown in FIG. 1, in the form of an injection valve for fuel injection systems of internal combustion engines, has a fuel inlet connection 1, which is surrounded by a magnet coil 4 and serves as the core, and which has a constant outer diameter, for example by means of centerless loops, over its entire length for the best possible use of space . The magnet coil 4 with a coil body 2, as shown in FIG. 2, is provided with a plastic coating 7, at the same time an electrical connector plug 21 is also molded, so that there is an independent plastic injection part containing the magnet coil 4 and the connector plug 21. The magnet coil 4, which has a stepped coil body 2 in the radial direction with a winding 13 which is stepped in the radial direction, in conjunction with the fuel inlet connector 1 having a constant outer diameter, enables a short and compact structure of the injection valve, as will be explained below.

Mit einem unteren Kernende 3 des Brennstoffeinlaßstutzens 1 ist konzentrisch zu einer Ventillängsachse 5 dicht ein rohrförmiges metallenes Zwischenteil 6 durch Schweißen verbunden und übergreift dabei mit einem oberen Zylinderabschnitt 41 das Kernende 3 teilweise axial. Der gestufte Spulenkörper 2 übergreift teilweise den Brennstoffeinlaßstutzen 1 und mit einer Stufe 42 größeren Durchmessers den Zylinderabschnitt 41 des Zwischenteils 6. Das Zwischenteil 6 ist an seinem dem Brennstoffeinlaßstutzen 1 abgewandten Ende mit einem unteren Zylinderabschnitt 43 versehen, der ein rohrförmiges Verbindungsteil 14 übergreift und mit diesem durch Schweißen dicht verbunden ist. In das stromabwärts liegende Ende des Verbindungsteils 14 ist ein zylinderförmiger Ventilsitzkörper 8 durch Schweißen dicht montiert. Die Aneinanderreihung von Brennstoffeinlaßstutzen 1, Zwischenteil 6, Verbindungsteil 14 und Ventilsitzkörper 8 stellt somit eine starre metallene Einheit dar. Der Ventilsitzkörper 8 weist einen konstanten, beispielsweise mittels Centerless-Schleifen ausgebildeten Außendurchmesser auf, so daß der Ventilsitzkörper 8 vollständig in das Verbindungsteil 14 eingesetzt werden kann und durch die längere Überdeckung eine bessere Dichtheit zwischen Ventilsitzkörper 8 und der Innenbohrung 30 des Verbindungsteiles 14 erzielt wird.With a lower core end 3 of the fuel inlet connector 1, a tubular metallic intermediate part 6 is connected by welding concentrically to a longitudinal valve axis 5 and partially overlaps the core end 3 with an upper cylinder section 41 axially. The stepped bobbin 2 partially overlaps the fuel inlet connector 1 and, with a step 42 of larger diameter, the cylinder section 41 of the intermediate part 6. The intermediate section 6 is provided at its end facing away from the fuel inlet connector 1 with a lower cylinder section 43 which engages over a tubular connecting part 14 and with it is tightly connected by welding. In the downstream end of the connecting part 14, a cylindrical valve seat body 8 is tightly mounted by welding. The lining up of fuel inlet connector 1, intermediate part 6, connecting part 14 and valve seat body 8 thus represents a rigid metal unit. The valve seat body 8 has a constant outer diameter, for example formed by centerless grinding, so that the valve seat body 8 can be fully inserted into the connecting part 14 can and through the longer coverage better tightness between valve seat body 8 and the inner bore 30 of the connecting part 14 is achieved.

Eine in eine Strömungsbohrung 19 des Brennstoffeinlaßstutzens 1 eingeschobene, in Längsrichtung einen Schlitz 31 aufweisende Einstellhülse 20, die beispielsweise aus gerolltem Federstahlblech ausgeformt ist, dient zur Einstellung der Federvorspannung einer an der Einstellhülse 20 anliegenden Rückstellfeder 32, die sich stromabwärts an einem Verbindungsrohr 11 abstützt. Mit dem der Rückstellfeder 32 zugewandten Ende des Verbindungsrohres 11 ist durch Schweißen ein rohrförmiger Anker 12 verbunden, der durch einen Führungsbund 15 des Zwischenteils 6 geführt wird. Am anderen Ende des Verbindungsrohres 11 ist mit diesem ein mit dem Ventilsitz 9 des Ventilsitzkörpers 8 zusammenwirkender Ventilschließkörper 10 beispielsweise durch Löten oder Schweißen verbunden, der beispielsweise als Kugel ausgebildet ist. Stromabwärts des Ventilsitzes 9 ist im Ventilsitzkörper 8 wenigstens eine, beispielsweise durch Erodieren geformte Abspritzöffnung 33 ausgebildet. Die Schweißnaht 35 zwischen Ventilsitzkörper 8 und Verbindungsteil 14 ist von der/den Abspritzöffnung/en 33 und vom Ventilsitz 9 relativ weit entfernt, so daß eine Mengenbeeinflussung und Undichtheit durch einen aufgrund der beim Schweißen auftretenden hohen Temperaturen erfolgenden Verzug des Ventilsitzkörpers 8 wirkungsvoll verhindert wird.An adjusting sleeve 20 inserted into a flow bore 19 of the fuel inlet connector 1 and having a slot 31 in the longitudinal direction, which is formed, for example, from rolled spring steel sheet, serves to adjust the spring preload of a return spring 32 abutting the adjusting sleeve 20, which is supported downstream on a connecting pipe 11. With the return spring 32 facing the end of the connecting tube 11, a tubular armature 12 is connected by welding, which is guided by a guide collar 15 of the intermediate part 6. At the other end of the connecting tube 11, a valve closing body 10, which interacts with the valve seat 9 of the valve seat body 8, is connected to the latter, for example by soldering or welding, which is designed, for example, as a ball. Downstream of the valve seat 9, at least one spray opening 33, for example formed by eroding, is formed in the valve seat body 8. The weld seam 35 between the valve seat body 8 and the connecting part 14 is from the spray opening (s) 33 and relatively far away from the valve seat 9, so that an influence on quantity and leakage due to a distortion of the valve seat body 8 occurring due to the high temperatures occurring during welding is effectively prevented.

Zwischen der Stirnfläche 23 des dem Anker 12 zugewandten Kernendes 3 und einer zum oberen Zylinderabschnitt 41 führenden Schulter 24 des Zwischenteiles 6 ist ein axialer Spalt 29 gebildet, in dem durch Einklemmen eine, einen Restluftspalt zwischen der zulaufseitigen Stirnseite 26 des Ankers 12 und der Stirnfläche 23 des Kernendes 3 bildende, den Hub des Ventilschließkörpers 10 beim Öffnungsvorgang des Ventils begrenzende nichtmagnetische Anschlagscheibe 27 angeordnet ist. Die geklemmte Anschlagscheibe 27 schützt die Stirnfläche 23 des Kernendes 3 wegen ihrer größeren Biegesteifigkeit besser vor Verschleiß als eine lose Scheibe, bei der die Gefahr des Verkantens und des ungleichmäßigen Anschlagens besteht.Between the end face 23 of the core end 3 facing the armature 12 and a shoulder 24 of the intermediate part 6 leading to the upper cylinder section 41, an axial gap 29 is formed, in which, by clamping, a residual air gap between the inlet-side end face 26 of the armature 12 and the end face 23 of the core end 3 forming, the stroke of the valve closing body 10 during the opening process of the valve limiting non-magnetic stop disc 27 is arranged. The clamped stop disc 27 protects the end face 23 of the core end 3 because of its greater bending stiffness better from wear than a loose disc, in which there is a risk of tilting and uneven striking.

Die Magnetspule 4 ist von wenigstens einem, im Ausführungsbeispiel als Bügel ausgebildeten, als ferromagnetisches Element dienenden Leitelement 16 umgeben, das sich in axialer Richtung über die gesamte Länge der Magnetspule 4 erstreckt und die Magnetspule 4 in Umfangsrichtung wenigstens teilweise umgibt und mit seinem einen Ende am Brennstoffeinlaßstutzen 1 und mit seinem anderen Ende am Verbindungsteil 14 anliegt und mit diesen z. B. durch Verschweißen verbunden ist.The magnet coil 4 is surrounded by at least one guide element 16, which is designed as a bracket in the exemplary embodiment and serves as a ferromagnetic element, which extends in the axial direction over the entire length of the magnet coil 4 and at least partially surrounds the magnet coil 4 in the circumferential direction and with one end thereof Fuel inlet connector 1 and with its other end on the connecting part 14 and z. B. is connected by welding.

Ein Teil des Ventils ist von einer Kunststoffummantelung 18 umschlossen, die sich vom Brennstoffeinlaßstutzen 1 ausgehend axial über die Magnetspule 4 mit Anschlußstecker 21 und das wenigstens eine Leitelement 16 erstreckt und dabei sich radial erstreckende Seitenflächen einer am Umfang des zulaufseitigen Endes 44 des Brennstoffeinlaßstutzens 1 vorgesehenen Ringnut 25 bildet. Der Nutgrund der beispielsweise einen Dichtring 45 aufweisenden Ringnut 25 wird durch den Umfang des Brennstoffeinlaßstutzens 1 ausgebildet. Die Kunststoffummantelung 18 greift am zulaufseitigen Ende 44 des Brennstoffeinlaßstutzens 1 in eine Haltenut 46.A part of the valve is enclosed by a plastic sheathing 18, which extends axially from the fuel inlet connector 1, extends axially via the magnetic coil 4 with connector 21 and the at least one guide element 16, and thereby radially extending side faces of an annular groove provided on the circumference of the inlet-side end 44 of the fuel inlet connector 1 25 forms. The bottom of the groove, which for example has a sealing ring 45, has an annular groove 25 formed by the circumference of the fuel inlet port 1. The plastic casing 18 engages in a holding groove 46 at the inlet end 44 of the fuel inlet connector 1.

Die beschriebene Kunststoffumspritzung 7 der Magnetspule 4 in Verbindung mit dem zugleich angespritzten Anschlußstecker 21 erlaubt eine hohe Flexibilität bei der Montage verschieden ausgebildeter Ventile, da für verschieden ausgeführte Anschlußstecker 21 und Magnetspulen 4 zur Erzeugung der Kunststoffummantelung 18 nur ein Umspritzungswerkzeug erforderlich ist. Die den in radialer Richtung gestuften Spulenkörper 2 mit der in radialer Richtung gestuften Bewicklung 13 aufweisende Magnetspule 4 ermöglicht eine kompakte und kurze Bauform des Ventils, indem sie den oberen Zylinderabschnitt 41 des Zwischenteils 6 überragt und damit eine Verschachtelung der einzelnen Teile bewirkt.The described plastic encapsulation 7 of the solenoid 4 in connection with the injection molded connector 21 allows a high degree of flexibility in the assembly of differently designed valves, since only one extrusion tool is required for connecting connectors 21 and solenoids 4 of different design to produce the plastic casing 18. The magnet coil 4, which has the coil body 2 stepped in the radial direction with the winding 13 stepped in the radial direction, enables a compact and short design of the valve by projecting beyond the upper cylinder section 41 of the intermediate part 6 and thus causing the individual parts to be interleaved.

Claims (6)

  1. An electromagnetically operated valve, in particular fuel injection valve for fuel injection systems of internal combustion engines, having a fuel-inlet pipe (1) which is surrounded by a magnetic coil (4) and serves as a core, having an armature (12) by means of which a valve closing element (10) which interacts with a fixed valve seat (9) can be operated, having a tubular metal inter-mediate part (6) which is tightly connected by one of its ends to one end (3) of the core of the fuel-inlet pipe (1), which end (3) faces the armature (12) and is tightly connected by its other end to a tubular connecting part (14), having a metal valve seat element (8) which has the fixed valve seat (9) and is attached to the connecting part (14) at its end facing away from the intermediate part (6), having at least one conduction element (16) which is constructed as a bracket, serves as a ferromagnetic element, extends in the axial direction over the entire length of the magnetic coil (4) and at least partially surrounds the magnetic coil (4) in the circumferential direction, having a plastic shell (18) which encloses at least part of the valve, and having an electric plug (21), wherein the magnetic coil (4) is enclosed by an injection-molded plastic part (7) which at the same time forms the electric plug (21), so that the magnetic coil (4) is formed together with the plug (21) as an independent injection-molded plastic part and is additionally enclosed by the plastic shell (18).
  2. The valve as claimed in claim 1, wherein an annular groove (25) is provided at the circumference of the supply-side end (44) of the fuel-inlet pipe (1), its regularly extending side faces being formed by the plastic shell (18) which encloses part of the valve and its groove base being formed by the circumference of the fuel-inlet pipe (1).
  3. The valve as claimed in claim 1 or 2, wherein an axial gap (29) is formed between one end face (23) of the end (3) of the core facing the armature (12) and one shoulder (24) of the intermediate part (6), in which gap (29) a non-magnetic stop plate (27), which forms a residual air gap between the supply-side end side (26) of the armature (12) and the end (3) of the core and which bounds the stroke of the valve closing element (10) during the opening process of the valve, is arranged by clamping.
  4. The valve as claimed in claims 1 to 3, wherein the fuel-inlet pipe (1) has a constant external diameter over its entire length.
  5. The valve as claimed in claims 1 to 4, wherein the valve seat element (8) has a constant external diameter.
  6. The valve as claimed in claim 1, wherein the magnetic coil (4) has a coil element (2) which is stepped in the radial direction and has a winding (13) which is stepped in the radial direction.
EP91902298A 1990-02-03 1991-01-21 Electromagnetically operated valve Expired - Lifetime EP0513037B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP94101334A EP0602001B1 (en) 1990-02-03 1991-01-21 Electromagnetically operated injection valve

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4003228 1990-02-03
DE4003228A DE4003228A1 (en) 1990-02-03 1990-02-03 ELECTROMAGNETICALLY ACTUABLE VALVE
PCT/DE1991/000050 WO1991011611A2 (en) 1990-02-03 1991-01-21 Electromagnetically operated valve

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP94101334.4 Division-Into 1994-01-29

Publications (2)

Publication Number Publication Date
EP0513037A1 EP0513037A1 (en) 1992-11-19
EP0513037B1 true EP0513037B1 (en) 1994-09-28

Family

ID=6399369

Family Applications (2)

Application Number Title Priority Date Filing Date
EP91902298A Expired - Lifetime EP0513037B1 (en) 1990-02-03 1991-01-21 Electromagnetically operated valve
EP94101334A Expired - Lifetime EP0602001B1 (en) 1990-02-03 1991-01-21 Electromagnetically operated injection valve

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP94101334A Expired - Lifetime EP0602001B1 (en) 1990-02-03 1991-01-21 Electromagnetically operated injection valve

Country Status (9)

Country Link
US (3) US5275341A (en)
EP (2) EP0513037B1 (en)
JP (2) JP2986542B2 (en)
KR (1) KR0185731B1 (en)
BR (1) BR9105985A (en)
DE (3) DE4003228A1 (en)
ES (2) ES2062761T3 (en)
RU (1) RU2092735C1 (en)
WO (1) WO1991011611A2 (en)

Families Citing this family (110)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4131500A1 (en) * 1991-09-21 1993-03-25 Bosch Gmbh Robert ELECTROMAGNETICALLY OPERATED INJECTION VALVE
DE4221757C2 (en) * 1992-07-02 1997-05-15 Rexroth Mannesmann Gmbh Solenoid operated proportional directional valve
DE4325842A1 (en) * 1993-07-31 1995-02-02 Bosch Gmbh Robert Fuel injection valve
DE4412277A1 (en) * 1994-04-09 1995-10-12 Bosch Gmbh Robert Electromagnetically actuated fuel injector
US5433386A (en) * 1994-06-24 1995-07-18 Siemens Automotive L.P. Fuel injector having an adjustment tube that discourages support for a vapor bubble dome
US5494223A (en) * 1994-08-18 1996-02-27 Siemens Automotive L.P. Fuel injector having improved parallelism of impacting armature surface to impacted stop surface
US5592356A (en) * 1994-09-27 1997-01-07 Synchro-Start Products, Inc. Dual coil actuator with timing circuit
JPH08189439A (en) * 1994-12-28 1996-07-23 Zexel Corp Solenoid type fuel injection valve and its nozzle assembly fitting method
US5577663A (en) * 1995-05-19 1996-11-26 Siemens Automotive Corporation Bottom feed injector with top calibration feed
DE19632196B4 (en) * 1996-08-09 2004-11-04 Robert Bosch Gmbh Electromagnetically actuated valve
DE19647587A1 (en) 1996-11-18 1998-05-20 Bosch Gmbh Robert Fuel injector
JPH10196488A (en) * 1997-01-08 1998-07-28 Aisan Ind Co Ltd Electromagnetic fuel injection valve
US5944262A (en) * 1997-02-14 1999-08-31 Denso Corporation Fuel injection valve and its manufacturing method
DE19712922B4 (en) * 1997-03-27 2005-08-11 Robert Bosch Gmbh Fuel injector
DE19727414A1 (en) 1997-06-27 1999-01-07 Bosch Gmbh Robert Method of manufacturing a solenoid for a valve and valve with a solenoid
DE19739850A1 (en) * 1997-09-11 1999-03-18 Bosch Gmbh Robert Electromagnetically actuated valve
US6047907A (en) * 1997-12-23 2000-04-11 Siemens Automotive Corporation Ball valve fuel injector
US6019297A (en) * 1998-02-05 2000-02-01 Siemens Automotive Corporation Non-magnetic shell for welded fuel injector
DE19827136A1 (en) * 1998-06-18 1999-12-23 Bosch Gmbh Robert Fuel injector
US20010002680A1 (en) 1999-01-19 2001-06-07 Philip A. Kummer Modular two part fuel injector
US6279844B1 (en) * 1999-03-18 2001-08-28 Siemens Automotive Corporation Fuel injector having fault tolerant connection
GB9914642D0 (en) * 1999-06-24 1999-08-25 Lucas Ind Plc Fuel injector
GB9919661D0 (en) * 1999-08-20 1999-10-20 Lucas Industries Ltd Actuator housing
JP2001082283A (en) * 1999-09-20 2001-03-27 Hitachi Ltd Solenoid fuel injection valve
JP4186145B2 (en) * 1999-09-30 2008-11-26 株式会社デンソー connector
DE10008554A1 (en) * 2000-02-24 2001-08-30 Bosch Gmbh Robert Fuel injection valve for internal combustion engines
US6409145B1 (en) 2000-02-28 2002-06-25 Delphi Technologies, Inc. Plunger assembly having a preset spring force pre-load
WO2001066933A1 (en) * 2000-03-08 2001-09-13 Hitachi, Ltd. Electromagnetic type fuel injection valve
US20040108395A1 (en) * 2001-09-13 2004-06-10 Hitachi, Ltd. Electromagnetic fuel injector
US6676044B2 (en) 2000-04-07 2004-01-13 Siemens Automotive Corporation Modular fuel injector and method of assembling the modular fuel injector
JP4158187B2 (en) 2000-05-12 2008-10-01 株式会社デンソー Fuel injection valve
DE10029280A1 (en) * 2000-06-14 2001-12-20 Bosch Gmbh Robert Encapsulation of a magnet coil for fuel injection uses an injection mold for a plastics to be injected between the coil and the housing and cover the electrical connection in a single-stage operation
JP2002048030A (en) * 2000-07-31 2002-02-15 Hitachi Ltd Fuel injection valve and internal combustion engine mounted with the same
DE10039077A1 (en) * 2000-08-10 2002-02-21 Bosch Gmbh Robert Fuel injection valve esp. of IC engines with solenoid coil and armature and return spring also valve needle for operating valve closing body which together with valve seat surface forms sealed seat
DE10042650C1 (en) * 2000-08-30 2002-05-02 Thomas Magnete Gmbh Switching valve has a holding part engaging around the entire valve body; with a guide part between holding part and valve body guiding the valve body within it and holding a part outside it
US6481646B1 (en) 2000-09-18 2002-11-19 Siemens Automotive Corporation Solenoid actuated fuel injector
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
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
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
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
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
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
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
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
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
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
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
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
US6543707B2 (en) 2000-12-29 2003-04-08 Siemens Automotive Corporation Modular fuel injector having a lift set sleeve
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
US6520421B2 (en) 2000-12-29 2003-02-18 Siemens Automotive Corporation Modular fuel injector having an integral filter and o-ring retainer
US6811091B2 (en) 2000-12-29 2004-11-02 Siemens Automotive Corporation Modular fuel injector having an integral filter and dynamic adjustment assembly
US6695232B2 (en) 2000-12-29 2004-02-24 Siemens Automotive Corporation Modular fuel injector having interchangeable armature assemblies 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
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
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
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
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
US6499677B2 (en) 2000-12-29 2002-12-31 Siemens Automotive Corporation Modular fuel injector having a low mass, high efficiency electromagnetic actuator and having an integral filter and dynamic adjustment assembly
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
DE10112143A1 (en) * 2001-03-14 2002-09-19 Bosch Gmbh Robert Fuel injector
US6687997B2 (en) 2001-03-30 2004-02-10 Siemens Automotive Corporation Method of fabricating and testing a modular fuel injector
US6904668B2 (en) 2001-03-30 2005-06-14 Siemens Vdo Automotive Corp. Method of manufacturing a modular fuel injector
US6676043B2 (en) 2001-03-30 2004-01-13 Siemens Automotive Corporation Methods of setting armature lift in 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
JP3719978B2 (en) * 2001-12-27 2005-11-24 株式会社日立製作所 Fuel injection valve
JP2003328901A (en) * 2002-05-13 2003-11-19 Hitachi Unisia Automotive Ltd Fuel injection valve
JP4082929B2 (en) * 2002-05-21 2008-04-30 株式会社日立製作所 Fuel injection valve
DE10240469A1 (en) * 2002-09-03 2004-03-11 Wabco Gmbh & Co. Ohg magnetic valve
US6644568B1 (en) * 2002-10-24 2003-11-11 Visteon Global Technologies, Inc. Fuel injector with spiral-wound spring adjustment tube
US6830201B2 (en) * 2002-12-26 2004-12-14 Robert Bosch Gmbh High pressure control valve for a fuel injector
US6978950B2 (en) * 2003-02-21 2005-12-27 Siemens Vdo Automotive Corporation High flow, tubular closure member for a fuel injector
US7007924B2 (en) * 2003-06-27 2006-03-07 Parker-Hannifin Corporation One-piece coil conduit
DK175664B1 (en) * 2003-12-23 2005-01-10 Ln Systems Aps Internal combustion engine comprises at least one cylinder with corresponding top piece, piston moving backward and forward in cylinder
DE102004025969A1 (en) * 2004-05-18 2005-12-15 Hydraulik-Ring Gmbh Solenoid valve for cam shaft adjustment device, has magnetic part comprising housing connected with bush of valve part, and seal arranged in housing for sealing valve in mounting position, where housing has axial retaining components
DE102004037541B4 (en) * 2004-08-03 2016-12-29 Robert Bosch Gmbh Fuel injector
US7552880B2 (en) * 2004-08-05 2009-06-30 Continental Automotive Systems Us, Inc. Fuel injector with a deep-drawn thin shell connector member and method of connecting components
JP3955055B2 (en) 2004-09-27 2007-08-08 株式会社ケーヒン Electromagnetic fuel injection valve
BRPI0516023B1 (en) * 2004-09-27 2018-04-03 Keihin Corporation ELECTROMAGNETIC FUEL INJECTION VALVE
JP2006242046A (en) 2005-03-01 2006-09-14 Hitachi Ltd Fuel injection valve
DE102009000183A1 (en) 2009-01-13 2010-07-15 Robert Bosch Gmbh Fuel injection valve for fuel injection systems of internal combustion engines, particularly for direct injection of fuel in combustion chamber of internal combustion engine, has actuator and flow choke provided in fuel supply
DE102009022496A1 (en) * 2009-05-25 2011-01-05 Focke & Co.(Gmbh & Co. Kg) Valve, in particular glue valve
US8317112B2 (en) * 2010-01-25 2012-11-27 Continental Automotive Systems Us, Inc. High pressure fuel injector seat that resists distortion during welding
DE102013216836A1 (en) * 2013-08-23 2015-02-26 Continental Automotive Gmbh Actuator for actuating an injection valve and injection valve
DE102013225829A1 (en) 2013-12-13 2015-06-18 Robert Bosch Gmbh Fuel injector
DE102013225834A1 (en) 2013-12-13 2015-06-18 Robert Bosch Gmbh Fuel injector
DE102013225817A1 (en) 2013-12-13 2015-06-18 Robert Bosch Gmbh Fuel injector
DE102013225840A1 (en) 2013-12-13 2015-06-18 Robert Bosch Gmbh Fuel injector
DE102013225812A1 (en) 2013-12-13 2015-06-18 Robert Bosch Gmbh Fuel injector
DE102013225820A1 (en) 2013-12-13 2015-06-18 Robert Bosch Gmbh Fuel injector
DE102014225994A1 (en) 2014-12-16 2016-06-16 Robert Bosch Gmbh Fuel injector
DE102014226003A1 (en) 2014-12-16 2016-06-16 Robert Bosch Gmbh Fuel injector
DE102014225999A1 (en) 2014-12-16 2016-06-16 Robert Bosch Gmbh Fuel injector
DE102015217673A1 (en) 2015-09-15 2017-03-16 Continental Automotive Gmbh Injection device for metering a fluid and motor vehicle with such an injection device
DE102015226528A1 (en) 2015-12-22 2017-06-22 Robert Bosch Gmbh Fuel injector
DE102015226541A1 (en) 2015-12-22 2017-06-22 Robert Bosch Gmbh Fuel injector
DE102015226533A1 (en) 2015-12-22 2017-06-22 Robert Bosch Gmbh Fuel injector
DE102015226515A1 (en) 2015-12-22 2017-06-22 Robert Bosch Gmbh Fuel injector
DE102016226142A1 (en) 2016-12-23 2018-06-28 Robert Bosch Gmbh Fuel injector
DE102016226135A1 (en) 2016-12-23 2018-06-28 Robert Bosch Gmbh Fuel injector
DE102017206057A1 (en) 2017-04-10 2018-10-11 Robert Bosch Gmbh Coil assembly for electromagnetic valves
JP6782668B2 (en) * 2017-06-16 2020-11-11 日立オートモティブシステムズ株式会社 Fuel injection valve
US10502112B2 (en) * 2017-09-14 2019-12-10 Vitesco Technologies USA, LLC Injector for reductant delivery unit having fluid volume reduction assembly
US10947880B2 (en) 2018-02-01 2021-03-16 Continental Powertrain USA, LLC Injector for reductant delivery unit having fluid volume reduction assembly
DE102020214154A1 (en) 2020-11-11 2022-05-12 Robert Bosch Gesellschaft mit beschränkter Haftung fuel injector
DE102020215217A1 (en) 2020-12-02 2022-06-02 Robert Bosch Gesellschaft mit beschränkter Haftung fuel injector
DE102020215215A1 (en) 2020-12-02 2022-06-02 Robert Bosch Gesellschaft mit beschränkter Haftung fuel injector
DE102020215218A1 (en) 2020-12-02 2022-06-02 Robert Bosch Gesellschaft mit beschränkter Haftung fuel injector
DE102020215621A1 (en) 2020-12-10 2022-06-15 Robert Bosch Gesellschaft mit beschränkter Haftung fuel injector
DE102020215794A1 (en) 2020-12-14 2022-06-15 Robert Bosch Gesellschaft mit beschränkter Haftung fuel injector

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2403770A1 (en) * 1974-01-26 1975-08-14 Bosch Gmbh Robert ELECTROMAGNETIC 3-WAY VALVE ARRANGEMENT
DE2755400A1 (en) * 1977-12-13 1979-06-21 Bosch Gmbh Robert FUEL INJECTION SYSTEM FOR COMBUSTION ENGINES, IN PARTICULAR FOR STRATIFIC CHARGE ENGINES
DE3010612A1 (en) * 1980-03-20 1981-10-01 Robert Bosch Gmbh, 7000 Stuttgart ELECTROMAGNETICALLY ACTUABLE VALVE
FR2492894B1 (en) * 1980-10-29 1985-06-07 Renault BALL ELECTROMAGNETICALLY CONTROLLED INJECTOR
JPS58137864U (en) * 1982-02-18 1983-09-16 愛三工業株式会社 electromagnetic fuel injector
US4646974A (en) * 1985-05-06 1987-03-03 General Motors Corporation Electromagnetic fuel injector with orifice director plate
US4610080A (en) * 1985-07-29 1986-09-09 Allied Corporation Method for controlling fuel injector lift
DE3528296A1 (en) * 1985-08-07 1987-02-19 Fluidtech Gmbh MAGNETIC VALVE
DE3535124A1 (en) * 1985-10-02 1987-04-02 Bosch Gmbh Robert ELECTROMAGNETICALLY ACTUABLE FUEL INJECTION VALVE
DE3723225A1 (en) * 1987-07-14 1989-01-26 Bosch Gmbh Robert Solenoid valve with flow through the interior
DE3739494A1 (en) * 1987-11-21 1989-06-01 Sueddeutsche Kuehler Behr VALVE FOR CONTROLLING THE COOLING WATER CIRCUIT IN COMBUSTION ENGINES
IT213013Z2 (en) * 1987-11-24 1989-10-13 Weber Srl EXCITATION COIL FOR A FUEL DOSING AND SPRAYING VALVE FOR A FUEL INJECTION DEVICE IN AN INTERNAL COMBUSTION ENGINE
IT1211626B (en) * 1987-12-24 1989-11-03 Weber Srl ELECTROMAGNETIC FUEL INJECTOR OF THE PERFECT TYPE
US5001987A (en) * 1988-06-29 1991-03-26 Heico Inc. Lightweight car-on-track system
DE3825135A1 (en) * 1988-07-23 1990-01-25 Bosch Gmbh Robert ELECTROMAGNETICALLY ACTUABLE VALVE
DE3831196A1 (en) * 1988-09-14 1990-03-22 Bosch Gmbh Robert ELECTROMAGNETICALLY ACTUABLE VALVE
DE3841142C2 (en) * 1988-12-07 1994-09-29 Bosch Gmbh Robert Injector
DE4109868A1 (en) * 1991-03-26 1992-10-01 Bosch Gmbh Robert ADJUSTING SOCKET FOR AN ELECTROMAGNETICALLY ACTUABLE VALVE AND METHOD FOR THE PRODUCTION THEREOF
US5207387A (en) * 1991-07-29 1993-05-04 Siemens Automotive L.P. Means for attenuating audible noise from a solenoid-operated fuel injector

Also Published As

Publication number Publication date
JPH05503976A (en) 1993-06-24
DE4003228C2 (en) 1992-11-26
DE59107672D1 (en) 1996-05-15
KR0185731B1 (en) 1999-03-20
JP3027353B2 (en) 2000-04-04
WO1991011611A2 (en) 1991-08-08
EP0602001B1 (en) 1996-04-10
ES2086971T3 (en) 1996-07-01
US5580001A (en) 1996-12-03
JP2986542B2 (en) 1999-12-06
RU2092735C1 (en) 1997-10-10
DE4003228A1 (en) 1991-08-22
EP0602001A2 (en) 1994-06-15
DE59103119D1 (en) 1994-11-03
WO1991011611A3 (en) 1991-09-19
EP0602001A3 (en) 1994-11-17
JPH10122085A (en) 1998-05-12
BR9105985A (en) 1992-11-10
ES2062761T3 (en) 1994-12-16
EP0513037A1 (en) 1992-11-19
US5275341A (en) 1994-01-04
KR920703997A (en) 1992-12-18
US6341412B1 (en) 2002-01-29

Similar Documents

Publication Publication Date Title
EP0513037B1 (en) Electromagnetically operated valve
EP0865574B1 (en) Fuel injection valve and method of producing the same
EP0944769B1 (en) Fuel injection valve
EP1789673B1 (en) Fuel injection valve
DE19722720C2 (en) Fuel injector with a simplified construction and assembly
EP0352444A1 (en) Electromagnetically operated valve and method for its production
EP1966479B1 (en) Electromagnetically operated valve
EP1358402B1 (en) Fuel injection valve
WO2002066818A1 (en) Fuel injection valve
EP1797313B1 (en) Fuel injection valve
WO1999013211A1 (en) Electromagnetically actuated valve
EP0455758B1 (en) Electromagnetically operated fuel-injection valve
EP2212543B1 (en) Fuel injection valve
EP2205853B1 (en) Electromagnetically activated valve
DE4113682A1 (en) INJECTION VALVE
EP0934461A1 (en) Fuel injection valve
DE3411537A1 (en) Electromagnetically operatable fuel injection valve
WO2000075503A1 (en) Fuel injection valve and method for producing the same
EP1114250A1 (en) Fuel injection valve
WO2003027489A1 (en) Fuel injection valve
DE102007049966A1 (en) Electromagnetically actuatable valve for fuel injection system of mixture-compressing, spark-ignited internal combustion engine, has plastic parts arranged on valve seat carrier and connecting port, where plastic parts are formed as spacers
DE4424463A1 (en) Fuel injection valve with closure element acting on seat

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): DE ES FR GB IT

17P Request for examination filed

Effective date: 19920707

17Q First examination report despatched

Effective date: 19931005

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB IT

ET Fr: translation filed
REF Corresponds to:

Ref document number: 59103119

Country of ref document: DE

Date of ref document: 19941103

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2062761

Country of ref document: ES

Kind code of ref document: T3

ITF It: translation for a ep patent filed

Owner name: STUDIO JAUMANN

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

Effective date: 19941207

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
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

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

Ref country code: GB

Payment date: 20030113

Year of fee payment: 13

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

Ref country code: FR

Payment date: 20030117

Year of fee payment: 13

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

Ref country code: ES

Payment date: 20030123

Year of fee payment: 13

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: 20040121

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

Ref country code: ES

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

Effective date: 20040122

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

Ref country code: DE

Payment date: 20040310

Year of fee payment: 14

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

Effective date: 20040121

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: 20040930

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

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;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050121

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20040122

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

Ref country code: DE

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

Effective date: 20050802