[go: up one dir, main page]

EP1373714A1 - Injection valve - Google Patents

Injection valve

Info

Publication number
EP1373714A1
EP1373714A1 EP02737752A EP02737752A EP1373714A1 EP 1373714 A1 EP1373714 A1 EP 1373714A1 EP 02737752 A EP02737752 A EP 02737752A EP 02737752 A EP02737752 A EP 02737752A EP 1373714 A1 EP1373714 A1 EP 1373714A1
Authority
EP
European Patent Office
Prior art keywords
nozzle
nozzle body
centering
injection valve
centering tool
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.)
Granted
Application number
EP02737752A
Other languages
German (de)
French (fr)
Other versions
EP1373714B1 (en
Inventor
Wolfgang Stoecklein
Dietmar Schmieder
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 EP1373714A1 publication Critical patent/EP1373714A1/en
Application granted granted Critical
Publication of EP1373714B1 publication Critical patent/EP1373714B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • F02M63/0026—Valves characterised by the valve actuating means electrical, e.g. using solenoid using piezoelectric or magnetostrictive actuators
    • 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
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8092—Fuel injection apparatus manufacture, repair or assembly adjusting or calibration
    • 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
    • F02M2547/00—Special features for fuel-injection valves actuated by fluid pressure
    • F02M2547/003—Valve inserts containing control chamber and valve piston

Definitions

  • the invention is based on an injection valve, in particular for an internal combustion engine of a motor vehicle, according to the type defined in more detail in the preamble of claim 1.
  • Such a valve is known from practice and can be used in particular in connection with common rail accumulator injection systems for diesel combustion machines.
  • a known injection valve of the type mentioned in the introduction comprises a nozzle body, in which a nozzle needle is guided axially displaceably and which has, for example, six defined openings which lead to the combustion chamber of the internal combustion engine and are controlled by means of the nozzle needle.
  • the openings are in The position of the injection valve is arranged so that a defined injection angle and a defined injection direction are guaranteed.
  • the nozzle needle can be controlled by means of a valve-like actuating device which is arranged in a so-called holding body.
  • the actuating device can, for example, be equipped with a piezoelectric actuator unit which is used for the axial displacement of a so-called actuating piston, which interacts via a hydraulic coupler with a so-called actuating piston, which in turn is connected to a valve closing member in such a way that pressure changes in a so-called valve control chamber can be generated.
  • the pressure changes in the valve control chamber lead to an axial displacement of the nozzle needle, which in turn releases or closes the openings leading to the combustion chamber of the internal combustion engine.
  • the holding body generally has key surfaces, which are used to fix and adjust the injection valve on a cylinder head of the internal combustion engine.
  • key surfaces which are used to fix and adjust the injection valve on a cylinder head of the internal combustion engine.
  • it In order to be able to set a defined injection angle, it must be ensured that the holding body and the nozzle body have a defined orientation to one another. This has so far been ensured by centering pins arranged in bores of the holding body or of the nozzle body.
  • centering pins are difficult to assemble and, when tightening one of the holding bodies and body connecting nozzle clamping nut are sheared off.
  • centering pin bores reduce the high-pressure strength of the nozzle body, which can have a negative effect in particular on common rail injection valves in which pressures of up to 1.4 kbar prevail. Bore tolerances of the bores receiving the centering pins also cause inaccurate angular centering of the nozzle body and holding body.
  • the injection valve according to the invention with the features according to the preamble of claim 1, in which the nozzle body has means on its circumferential surface for engaging a centering tool, has the advantage that at least for angular orientation or angular centering of the nozzle body relative to the holding body Zylin - Der reconstructe omitted, since the nozzle body can be aligned with the holding body by means of a centering tool attachable to the outside of the nozzle body.
  • the means for engaging a centering tool are designed as at least one flat surface which is arranged on the circumference of the nozzle body.
  • a surface offers a simple possibility of engaging a correspondingly designed centering tool with at least one corresponding centering lug engaging on the flat surface.
  • the nozzle body can have two flat surfaces arranged on opposite sides.
  • An embodiment with only one flat surface offers the advantage, however, that the risk of rotating the nozzle body relative to the holding body by 180 ° is low, which would lead to incorrect orientation and would render the injection valve unusable.
  • the nozzle body on its circumferential surface with at least one groove or a blind hole-like hole in which a corresponding centering tool can engage.
  • the nozzle body and the holding body can be connected to one another via a nozzle clamping nut.
  • the nozzle body has an increased wall thickness in the area covered by the nozzle clamping nut.
  • the means for engaging the centering tool are designed in this area so that they are at least partially covered by the nozzle clamping nut.
  • the pressure holding capacity of the injection valve is thus ensured by the means for engaging the centering tool, which can be designed, for example, as ground surfaces.
  • the nozzle body can advantageously be oriented relative to the holding body in such a way that this surface is arranged parallel to key surfaces of the holding body.
  • any other orientation is also conceivable that enables easy centering.
  • FIG. 1 shows a schematic longitudinal section through an injection valve
  • FIG. 2 shows a detail of the injection valve according to FIG. 1 in accordance with area II shown in FIG. 1 in an enlarged illustration together with a centering tool
  • FIG. 3 shows a simplified cross section through the injection valve according to FIGS. 1 and 2 along the line III-III in FIG. 2,
  • Figure 4 is a simplified illustration of a centering tool in longitudinal section
  • FIG. 5 shows a plan view of the centering tool of FIG. 4 according to arrow V in FIG. 4.
  • an injection valve 1 is shown, which is intended in particular for fuel injection into a diesel engine.
  • the injection valve 1 comprises a valve control unit 2 and a nozzle unit 3 with a nozzle body 4, in which a nozzle needle 5 is arranged to be axially displaceable.
  • the free end 6 of the nozzle body 4 has a plurality of openings, not shown here, through which fuel can be injected into a combustion chamber of the internal combustion engine. Depending on the position of the nozzle needle 5, the openings are either opened or closed. An injection process is triggered or stopped via the position of the nozzle needle 5.
  • the injection valve 1 has the valve control unit 2, which fl chen 33 provided holding body 7 and a housing part 8 adjoining the holding body 7 in the axial direction.
  • the nozzle body 4, the housing part 8 and the holding body 7 are clamped to one another via a nozzle clamping nut 9, which rests with a collar 10 on a shoulder 11 of the nozzle body 4 and is fixed to the holding body 7 via a thread 12.
  • the shoulder 11 and / or the surface of the collar 10 of the nozzle clamping nut 9 lying against the shoulder 11 can be coated with a sliding material, for example Teflon, so that only a small torque is transmitted to the nozzle body 4 when the nozzle clamping nut 9 is tightened.
  • a piezoelectric actuator 14 and a so-called actuating piston 14 connected to the piezoelectric actuator 13 are arranged in the holding body 7 of the valve control unit 2.
  • the piezoelectric actuator 13 is connected via electrical lines 15 to a valve control, not shown here.
  • the actuating piston 14 interacts via a hydraulic coupler 15 with a so-called actuating piston 16, which is guided in the housing part 8 and is connected to a valve closing member 17.
  • the valve closing member 17 in turn interacts with a valve seat 18.
  • valve control room 19 which on the one hand bounded by a spring plate 23, in which an inlet throttle 20 and an outlet throttle 22 leading to the valve control unit 2 are formed, and secondly by a valve control piston 24, which forms a structural unit with the nozzle needle 5 and is designed to be axially displaceable in the spring plate 23 ,
  • An axial offset of the valve control piston 24 and thus the nozzle needle 5 can be adjusted by changing the pressure level in the valve control chamber 19.
  • the inlet throttle 20 connects a high-pressure chamber 21, which contains fuel intended for injection into the combustion chamber of the internal combustion engine, to the valve control chamber 19.
  • An injection start, an injection duration and an injection quantity via the openings arranged at the end 6 of the nozzle unit 3 are determined by means of the valve control unit 2.
  • valve closing member 18 is actuated by means of the piezoelectric actuator 13, as a result of which fuel can flow out of the valve control chamber 19 via the outlet throttle 22 and the pressure in the valve control chamber 19 drops. This shifts the
  • Valve control piston 24 and the nozzle needle 5 connected to it so that the openings leading to the combustion chamber are opened and fuel is injected into the combustion chamber. Accordingly, the injection process is stopped by closing the valve closing member 17.
  • the nozzle body 4 has in the region of the collar 10 of the valve clamping nut 9 two flat surfaces 25 and 26 which are aligned in parallel. The two surfaces 25 and 26 form so-called centering surfaces, which are used to attach one
  • Centering tool 30 serve.
  • the centering tool 30 has two centering lugs 31 and 32, each of which can be inserted into a gap between the annular collar 10 of the valve clamping nut 9 and the nozzle body 4 and thus bear against the centering surfaces 25 and 26, as in FIGS. 2 and 3 is recognizable.
  • FIG. 3 shows a cross section through the nozzle unit 3 and the centering tool 30 with the centering lugs 31 and 32 engaging in each case in a gap.
  • the nozzle clamping nut 9 is not shown.
  • the centering of the nozzle body 4, i.e. the angular orientation of the nozzle body 4 relative to the holding body 7 is achieved in that the nozzle body 4 is rotated relative to the holding body 7 by means of the centering tool 30, which rests against the centering surfaces 25 and 26 via the centering lugs 31 and 32, such that the centering surfaces 25 and 26 and the key surfaces 33, which are formed on the holding body 7, assume the respectively prescribed and required angular position.
  • centering pins can be used be dispensed with between the nozzle body 4 and the housing part 8.
  • FIGS. 4 and 5 show an alternative embodiment of a centering tool 40, by means of which a nozzle body, not shown here, can be rotated relative to a holding body of an injection valve and thus aligned.
  • the centering tool 40 is cup-shaped and has an axially aligned bore 41, so that the centering tool can be plugged onto the nozzle body.
  • the bore 41 of the centering tool 40 has a conical surface 42 designed in the manner of a chamfer, which merges into an axially aligned flat surface 43.
  • the centering tool 40 is plugged onto the nozzle body, which is pre-assembled with the holding body via a valve clamping nut, so that a conical surface corresponding to the nozzle body is formed on the conical surface 42 and one corresponding to the nozzle body on the flat surface 43 trained so-called centering nose.
  • the nozzle body has only one centering nose.
  • the centering tool 40 is rotated in the circumferential direction until the prescribed angular position has been assumed between the nozzle body and the holding body. Then the valve tightened nut so that the nozzle body and the holding body are rotatably connected.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Dram (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)

Abstract

The invention relates to an injection valve, particularly an injection valve for an internal combustion engine, comprising at least one nozzle body (4), in which a nozzle needle (5) is guided in an axially displaceable manner, and an at least one-piece retaining body (7), in which means for actuating the nozzle needle (5) are arranged. The peripheral surface of the nozzle body (4) comprises means (25, 26) that permit the engagement of a centering tool (30).

Description

EinspritzventilInjector
Stand der TechnikState of the art
Die Erfindung geht von einem Einspritzventil, insbesondere für eine Verbrennungsmaschine eines Kraftfahrzeuges, gemäß der im Oberbegriff des Patentanspruches 1 näher definierten Art aus .The invention is based on an injection valve, in particular for an internal combustion engine of a motor vehicle, according to the type defined in more detail in the preamble of claim 1.
Ein derartiges Ventil ist aus der Praxis bekannt und kann insbesondere in Verbindung mit Common-Rail-Speichereinspritzsystemen für Dieselverbrennungsmaschinen eingesetzt werden.Such a valve is known from practice and can be used in particular in connection with common rail accumulator injection systems for diesel combustion machines.
Ein bekanntes Einspritzventil der einleitend genannten Art umfaßt einen Düsenkörper, in dem eine Düsennadel axial verschiebbar geführt ist und der beispielsweise sechs definiert angeordnete Öffnungen aufweist, welche zu dem Ver- brennungsraum der Verbrennungsmaschine führen und mittels der Düsennadel gesteuert sind. Die Öffnungen sind in Ein- baulage des Einspritzventils so angeordnet, daß ein definierter Einspritzwinkel und eine definierte Einspritzrichtung gewährleistet sind.A known injection valve of the type mentioned in the introduction comprises a nozzle body, in which a nozzle needle is guided axially displaceably and which has, for example, six defined openings which lead to the combustion chamber of the internal combustion engine and are controlled by means of the nozzle needle. The openings are in The position of the injection valve is arranged so that a defined injection angle and a defined injection direction are guaranteed.
Die Düsennadel ist mittels einer ventilartig ausgebildeten Betätigungsvorrichtung ansteuerbar, die in einem sogenannten Haltekörper angeordnet ist. Die Betätigungsvorrichtung kann beispielsweise mit einer piezoelektrischen Aktuator- Einheit ausgestattet sein, die zur axialen Verschiebung ei- nes sogenannten Stellkolbens dient, welcher über einen hydraulischen Koppler mit einem sogenannten Betätigungskolben zusammenwirkt, der wiederum so mit einem Ventilschließglied verbunden ist, daß Druckänderungen in einem sogenannten Ventilsteuerraum erzeugt werden können. Die Druckänderungen in dem Ventilsteuerraum führen zu einer axialen Verschiebung der Düsennadel, wodurch wiederum die zu dem Verbrennungsraum der Verbrennungsmaschine führenden Öffnungen freigegeben bzw. verschlossen werden.The nozzle needle can be controlled by means of a valve-like actuating device which is arranged in a so-called holding body. The actuating device can, for example, be equipped with a piezoelectric actuator unit which is used for the axial displacement of a so-called actuating piston, which interacts via a hydraulic coupler with a so-called actuating piston, which in turn is connected to a valve closing member in such a way that pressure changes in a so-called valve control chamber can be generated. The pressure changes in the valve control chamber lead to an axial displacement of the nozzle needle, which in turn releases or closes the openings leading to the combustion chamber of the internal combustion engine.
Der Haltekörper weist in der Regel Schlüsselflächen auf, welche zur Fixierung und Justierung des Einspritzventils an einem Zylinderkopf der Verbrennungsmaschine dienen. Um einen definierten Einspritzwinkel einstellen zu können, muß gewährleistet sein, daß der Haltekörper und der Düsenkörper eine definierte Orientierung zueinander aufweisen. Dies wird bisher durch in Bohrungen des Haltekörpers bzw. des Düsenkörpers angeordnete Zentrierstifte gewährleistet .The holding body generally has key surfaces, which are used to fix and adjust the injection valve on a cylinder head of the internal combustion engine. In order to be able to set a defined injection angle, it must be ensured that the holding body and the nozzle body have a defined orientation to one another. This has so far been ensured by centering pins arranged in bores of the holding body or of the nozzle body.
Solche Zentrierstifte sind jedoch schlecht montierbar und können beim Anziehen einer den Haltekörper und den Düsen- körper miteinander verbindenden Düsenspannmutter abgeschert werden.However, such centering pins are difficult to assemble and, when tightening one of the holding bodies and body connecting nozzle clamping nut are sheared off.
Des weiteren verringern die Zentrierstiftbohrungen die Hochdruckfestigkeit des Düsenkörpers, was sich insbesondere bei Common-Rail-Einspritzventilen, in welchen Drücke bis zu 1,4 kbar herrschen, negativ auswirken kann. Auch verursachen Bohrungstoleranzen der die Zentrierstifte aufnehmenden Bohrungen eine ungenaue WinkelZentrierung von Düsenkörper und Haltekörper.In addition, the centering pin bores reduce the high-pressure strength of the nozzle body, which can have a negative effect in particular on common rail injection valves in which pressures of up to 1.4 kbar prevail. Bore tolerances of the bores receiving the centering pins also cause inaccurate angular centering of the nozzle body and holding body.
Vorteile der ErfindungAdvantages of the invention
Das Einspritzventil nach der Erfindung mit den Merkmalen nach dem Oberbegriff des Patentanspruches 1, bei welchem der Düsenkörper an seiner Umfangsfl che Mittel zum Angriff eines Zentrierwerkzeugs aufweist, hat demgegenüber den Vorteil, daß zumindest zur Winkelorientierung bzw. Winkelzen- trierung des Düsenkörpers gegenüber dem Haltekörper Zylin- derstifte entfallen, da der Düsenkörper mittels eines an der Außenseite des Düsenkörpers ansetzbaren Zentrierwerkzeugs gegenüber dem Haltekörper ausgerichtet werden kann.The injection valve according to the invention with the features according to the preamble of claim 1, in which the nozzle body has means on its circumferential surface for engaging a centering tool, has the advantage that at least for angular orientation or angular centering of the nozzle body relative to the holding body Zylin - Derstifte omitted, since the nozzle body can be aligned with the holding body by means of a centering tool attachable to the outside of the nozzle body.
Eine derartige Orientierung bzw. Zentrierung ist problemlos und mit hoher Präzision durchführbar, so daß gegenüber den Einspritzventilen nach dem Stand der Technik eine erleichterte und verbesserte Montage des Einspritzventils gewährleistet ist. Auch ergibt sich dadurch, daß die Bohrungen für die Zentrierstifte zumindest teilweise entfallen, der Vorteil einer erhöhten Hochdruckfestigkeit des Düsenkörpers.Such orientation or centering can be carried out easily and with high precision, so that, compared to the injection valves according to the prior art, easier and improved assembly of the injection valve is ensured. It also results from the fact that the bores for the centering pins are at least partially eliminated, the advantage of an increased high-pressure strength of the nozzle body.
Gemäß einer bevorzugten Ausführungsform des Einspritzventils nach der Erfindung sind die Mittel zum Angriff eines Zentrierwerkzeugs als mindestens eine plane Fläche ausgebildet, die am Umfang des Düsenkörpers angeordnet ist. Eine derartige Fläche bietet eine einfache Möglichkeit zum An- griff eines korrespondierend ausgebildeten Zentrierwerkzeugs mit mindestens einer entsprechenden, an der planen Fläche angreifenden Zentriernase. Beispielsweise kann der Düsenkörper zwei an gegenüberliegenden Seiten angeordnete plane Flächen aufweisen.According to a preferred embodiment of the injection valve according to the invention, the means for engaging a centering tool are designed as at least one flat surface which is arranged on the circumference of the nozzle body. Such a surface offers a simple possibility of engaging a correspondingly designed centering tool with at least one corresponding centering lug engaging on the flat surface. For example, the nozzle body can have two flat surfaces arranged on opposite sides.
Eine Ausführungsform mit nur einer planen Fläche bietet aber demgegenüber den Vorteil, daß die Gefahr gering ist, den Düsenkörper gegenüber dem Haltekorper um 180° zu verdrehen, was zu einer Fehlorientierung führen und das Ein- spritzventil unbrauchbar machen würde.An embodiment with only one flat surface offers the advantage, however, that the risk of rotating the nozzle body relative to the holding body by 180 ° is low, which would lead to incorrect orientation and would render the injection valve unusable.
Es ist aber auch denkbar, den Düsenkörper an seiner Um- fangsfläche mit mindestens einer Nut oder einer sacklochar- tigen Bohrung zu versehen, in welche ein entsprechendes Zentrierwerkzeug eingreifen kann.However, it is also conceivable to provide the nozzle body on its circumferential surface with at least one groove or a blind hole-like hole in which a corresponding centering tool can engage.
Der Düsenkörper und der Haltekörper können über eine Düsen- spannmutter miteinander verbunden sein. In der Regel weist der Düsenkörper in dem Bereich, der von der Düsenspannmut- ter überdeckt wird, eine erhöhte Wandstärke auf. Um dieThe nozzle body and the holding body can be connected to one another via a nozzle clamping nut. As a rule, the nozzle body has an increased wall thickness in the area covered by the nozzle clamping nut. To the
Hochdruckfestigkeit des Düsenkörpers nicht zu beeinträchti- gen, sind daher die Mittel zum Angriff des Zentrierwerkzeugs in diesem Bereich ausgebildet, so daß sie von der Dü- senspannmutter zumindest teilweise überdeckt sind. Damit ist das Druckhaltevermögen des Einspritzventils durch die Mittel zum Angriff des Zentrierwerkzeugs, welche beispielsweise als angeschliffene Flächen ausgebildet sein können, gewährleistet .The high-pressure strength of the nozzle body should not be Therefore, the means for engaging the centering tool are designed in this area so that they are at least partially covered by the nozzle clamping nut. The pressure holding capacity of the injection valve is thus ensured by the means for engaging the centering tool, which can be designed, for example, as ground surfaces.
Wenn die Mittel zum Angriff eines Zentrierwerkzeugs als mindestens eine plane Fläche ausgebildet sind, kann der Dusenkorper gegenüber dem Haltekörper in vorteilhafter Weise so ausgerichtet sein, daß diese Fläche parallel zu Schlüsselflächen des Haltekörpers angeordnet ist. Es ist aber auch jede andere Orientierung denkbar, die eine problemlose Zentrierung ermöglicht.If the means for engaging a centering tool are designed as at least one flat surface, the nozzle body can advantageously be oriented relative to the holding body in such a way that this surface is arranged parallel to key surfaces of the holding body. However, any other orientation is also conceivable that enables easy centering.
Weitere Vorteile und vorteilhafte Weiterbildungen des Gegenstandes nach der Erfindung ergeben sich aus der Beschreibung, der Zeichnung und den Patentansprüchen.Further advantages and advantageous developments of the object according to the invention result from the description, the drawing and the patent claims.
Zeichnungdrawing
Ein Ausführungsbeispiel des Einspritzventils nach der Er- findung ist in der Zeichnung schematisch vereinfacht dargestellt und wird in der nachfolgenden Beschreibung näher erläutert. Es zeigenAn embodiment of the injection valve according to the invention is shown schematically simplified in the drawing and is explained in more detail in the following description. Show it
Figur 1 einen schematisierten Längsschnitt durch ein Ein- spritzventil, Figur 2 einen Ausschnitt des Einspritzventils nach Figur 1 gemäß dem in Figur 1 ersichtlichen Bereich II in einer vergrößerten Darstellung zusammen mit einem Zentrierwerkzeug,FIG. 1 shows a schematic longitudinal section through an injection valve, FIG. 2 shows a detail of the injection valve according to FIG. 1 in accordance with area II shown in FIG. 1 in an enlarged illustration together with a centering tool,
Figur 3 einen vereinfachten Querschnitt durch das Ein- spritzventil nach den Figuren 1 und 2 entlang der Linie III-III in der Figur 2,3 shows a simplified cross section through the injection valve according to FIGS. 1 and 2 along the line III-III in FIG. 2,
Figur 4 eine vereinfachte Darstellung eines Zentrierwerkzeugs im Längsschnitt, undFigure 4 is a simplified illustration of a centering tool in longitudinal section, and
Figur 5 eine Draufsicht auf das Zentrierwerkzeug der Figur 4 gemäß dem Pfeil V in Figur 4.5 shows a plan view of the centering tool of FIG. 4 according to arrow V in FIG. 4.
Beschreibung des AusführungsbeispielsDescription of the embodiment
In der Zeichnung ist ein Einspritzventil 1 dargestellt, das insbesondere zur Kraftstoffeinspritzung in eine Dieselverbrennungsmaschine bestimmt ist. Das Einspritzventil 1 umfaßt eine Ventilsteuereinheit 2 und eine Düseneinheit 3 mit einem Düsenkörper 4, in dem eine Düsennadel 5 axial ver- schiebbar angeordnet ist.In the drawing, an injection valve 1 is shown, which is intended in particular for fuel injection into a diesel engine. The injection valve 1 comprises a valve control unit 2 and a nozzle unit 3 with a nozzle body 4, in which a nozzle needle 5 is arranged to be axially displaceable.
Der Düsenkörper 4 hat an seinem freien Ende 6 mehrere, hier nicht dargestellte Öffnungen, über die Kraftstoff in einen Verbrennungsraum der Verbrennungsmaschine eingespritzt wer- den kann. In Abhängigkeit von der Lage der Düsennadel 5 sind die Öffnungen entweder geöffnet oder verschlossen. Über die Lage der Düsennadel 5 wird also ein Einspritzvorgang ausgelöst bzw. gestoppt.The free end 6 of the nozzle body 4 has a plurality of openings, not shown here, through which fuel can be injected into a combustion chamber of the internal combustion engine. Depending on the position of the nozzle needle 5, the openings are either opened or closed. An injection process is triggered or stopped via the position of the nozzle needle 5.
Zur Betätigung der Düsennadel 5 weist das Einspritzventil 1 die Ventilsteuereinheit 2 auf, welcher einen mit Schlüssel- fl chen 33 versehenen Haltekörper 7 sowie ein sich an den Haltekörper 7 in axialer Richtung anschließendes Gehäuseteil 8 aufweist.To actuate the nozzle needle 5, the injection valve 1 has the valve control unit 2, which fl chen 33 provided holding body 7 and a housing part 8 adjoining the holding body 7 in the axial direction.
Der Düsenkörper 4, das Gehäuseteil 8 und der Haltekörper 7 sind über eine Düsenspannmutter 9 miteinander verspannt, welche mit einem Bund 10 an einer Schulter 11 des Düsenkörpers 4 anliegt und über ein Gewinde 12 an dem Haltekorper 7 fixiert ist. Die Schulter 11 und/oder die an der Schulter 11 anliegende Fläche des Bundes 10 der Düsenspannmutter 9 kann mit einem Gleitmaterial, beispielsweise Teflon, beschichtet sein, so daß beim Anziehen der Düsenspannmutter 9 nur ein geringes Drehmoment auf den Düsenkörper 4 übertragen wird.The nozzle body 4, the housing part 8 and the holding body 7 are clamped to one another via a nozzle clamping nut 9, which rests with a collar 10 on a shoulder 11 of the nozzle body 4 and is fixed to the holding body 7 via a thread 12. The shoulder 11 and / or the surface of the collar 10 of the nozzle clamping nut 9 lying against the shoulder 11 can be coated with a sliding material, for example Teflon, so that only a small torque is transmitted to the nozzle body 4 when the nozzle clamping nut 9 is tightened.
In dem Haltekörper 7 der Ventilsteuereinheit 2 sind ein piezoelektrischer Aktor 14 sowie ein mit dem piezoelektrischen Aktor 13 verbundener, sogenannter Stellkolben 14 angeordnet. Der piezoelektrische Aktor 13 ist über elektri- sehe Leitungen 15 mit einer hier nicht dargestellten Ventilsteuerung verbunden.A piezoelectric actuator 14 and a so-called actuating piston 14 connected to the piezoelectric actuator 13 are arranged in the holding body 7 of the valve control unit 2. The piezoelectric actuator 13 is connected via electrical lines 15 to a valve control, not shown here.
Der Stellkolben 14 wirkt über einen hydraulischen Koppler 15 mit einem sogenannten Betätigungskolben 16 zusammen, welcher in dem Gehäuseteil 8 geführt ist und mit einem Ventilschließglied 17 verbunden ist. Das Ventilschließglied 17 wirkt wiederum mit einem Ventilsitz 18 zusammen.The actuating piston 14 interacts via a hydraulic coupler 15 with a so-called actuating piston 16, which is guided in the housing part 8 and is connected to a valve closing member 17. The valve closing member 17 in turn interacts with a valve seat 18.
Durch Betätigung des Ventilschließglieds 16 mittels des piezoelektrischen Aktors 13 ist das Druckniveau in einem sogenannten Ventilsteuerräum 19 einstellbar, der zum einen von einem Federteller 23, in welchem eine Zulaufdrossel 20 und eine zu der VentilSteuereinheit 2 führende Ablaufdrossel 22 ausgebildet sind, und zum anderen von einem Ventil- steuerkolben 24 begrenzt, welcher mit der Düsennadel 5 eine Baueinheit bildet und axial verschiebbar in dem Federteller 23 ausgeführt ist. Ein axialer Versatz des Ventilsteuerkolbens 24 und damit der Düsennadel 5 kann über eine Änderung des Druckniveaus in dem Ventilsteuerräum 19 eingestellt werden.By actuating the valve closing member 16 by means of the piezoelectric actuator 13, the pressure level can be set in a so-called valve control room 19, which on the one hand bounded by a spring plate 23, in which an inlet throttle 20 and an outlet throttle 22 leading to the valve control unit 2 are formed, and secondly by a valve control piston 24, which forms a structural unit with the nozzle needle 5 and is designed to be axially displaceable in the spring plate 23 , An axial offset of the valve control piston 24 and thus the nozzle needle 5 can be adjusted by changing the pressure level in the valve control chamber 19.
Die Zulaufdrossel 20 verbindet einen Hochdruckraum 21, in welchem zur Einspritzung in den Verbrennungsraum der Verbrennungsmaschine vorgesehener Kraftstoff enthalten ist, mit dem Ventilsteuerraum 19.The inlet throttle 20 connects a high-pressure chamber 21, which contains fuel intended for injection into the combustion chamber of the internal combustion engine, to the valve control chamber 19.
Ein Einspritzbeginn, eine Einspritzdauer und eine Einspritzmenge über die an dem Ende 6 der Düseneinheit 3 angeordneten Öffnungen wird mittels der Ventilsteuereinheit 2 festgelegt .An injection start, an injection duration and an injection quantity via the openings arranged at the end 6 of the nozzle unit 3 are determined by means of the valve control unit 2.
Um einen Einspritzvorgang auszulösen, wird das Ventilschließglied 18 mittels des piezoelektrischen Aktors 13 betätigt, wodurch Kraftstoff aus dem Ventilsteuerraum 19 über die Ablaufdrossel 22 abströmen kann und der Druck in dem Ventilsteuerraum 19 abfällt. Dadurch verschiebt sich derIn order to trigger an injection process, the valve closing member 18 is actuated by means of the piezoelectric actuator 13, as a result of which fuel can flow out of the valve control chamber 19 via the outlet throttle 22 and the pressure in the valve control chamber 19 drops. This shifts the
Ventilsteuerkolben 24 und die mit diesem verbundene Düsennadel 5, so daß die zu dem Verbrennungsraum führenden Öffnungen freigegeben werden und Kraftstoff in den Verbrennungsraum eingespritzt wird. Entsprechend wird durch Schließen des Ventilschließglieds 17 der Einspritzvorgang gestoppt . Der Düsenkörper 4 weist im Bereich des Ringbundes 10 der Ventilspannmutter 9 zwei plane Flächen 25 und 26 auf, die parallel ausgerichtet sind. Die beiden Flächen 25 und 26 bilden sogenannte Zentrierflächen, die zum Ansetzen einesValve control piston 24 and the nozzle needle 5 connected to it, so that the openings leading to the combustion chamber are opened and fuel is injected into the combustion chamber. Accordingly, the injection process is stopped by closing the valve closing member 17. The nozzle body 4 has in the region of the collar 10 of the valve clamping nut 9 two flat surfaces 25 and 26 which are aligned in parallel. The two surfaces 25 and 26 form so-called centering surfaces, which are used to attach one
Zentrierwerkzeugs 30 dienen. Hierzu weist das Zentrierwerkzeug 30 zwei Zentriernasen 31 und 32 auf, die jeweils in einen Spalt zwischen dem Ringbund 10 der Ventilspannmutter 9 und dem Düsenkörper 4 einführbar sind und so an den Zen- trierflächen 25 und 26 anliegen, wie in Figur 2 und Figur 3 zu erkennen ist.Centering tool 30 serve. For this purpose, the centering tool 30 has two centering lugs 31 and 32, each of which can be inserted into a gap between the annular collar 10 of the valve clamping nut 9 and the nozzle body 4 and thus bear against the centering surfaces 25 and 26, as in FIGS. 2 and 3 is recognizable.
Der Figur 3 ist ein Querschnitt durch die Düseneinheit 3 und das Zentrierwerkzeug 30 mit den jeweils in einen Spalt eingreifenden Zentriernasen 31 und 32 zu entnehmen. Bei dieser Ansicht ist die Düsenspannmutter 9 nicht dargestellt .FIG. 3 shows a cross section through the nozzle unit 3 and the centering tool 30 with the centering lugs 31 and 32 engaging in each case in a gap. In this view, the nozzle clamping nut 9 is not shown.
Die Zentrierung des Düsenkörpers 4, d.h. die Winkelorien- tierung des Düsenkörpers 4 gegenüber dem Haltekörper 7 wird dadurch erreicht, daß der Düsenkörper 4 mittels des Zentrierwerkzeugs 30, das über die Zentriernasen 31 und 32 an den Zentrierflächen 25 und 26 anliegt, gegenüber dem Haltekörper 7 so verdreht wird, daß die Zentrierflächen 25 und 26 und die Schlüsselflächen 33, die an dem Haltekörper 7 ausgebildet sind, die jeweils vorgeschriebene und erforderliche Winkelstellung einnehmen.The centering of the nozzle body 4, i.e. the angular orientation of the nozzle body 4 relative to the holding body 7 is achieved in that the nozzle body 4 is rotated relative to the holding body 7 by means of the centering tool 30, which rests against the centering surfaces 25 and 26 via the centering lugs 31 and 32, such that the centering surfaces 25 and 26 and the key surfaces 33, which are formed on the holding body 7, assume the respectively prescribed and required angular position.
Durch die Ausbildung der Zentrierflächen 25 und 26 an der Außenseite des Düsenkδrpers 4 und des dadurch möglichen Angriffs des Zentrierwerkzeugs 30 kann auf Zentrierstifte zwischen dem Dusenkorper 4 und dem Gehäuseteil 8 verzichtet werden.Due to the formation of the centering surfaces 25 and 26 on the outside of the nozzle body 4 and the possible attack by the centering tool 30, centering pins can be used be dispensed with between the nozzle body 4 and the housing part 8.
In den Figuren 4 und 5 ist eine alternative Ausführungsform eines Zentrierwerkzeugs 40 dargestellt, mittels dessen ein hier nicht dargestellter Düsenkörper gegenüber einem Haltekörper eines Einspritzventils verdreht und damit ausgerichtet werden kann.FIGS. 4 and 5 show an alternative embodiment of a centering tool 40, by means of which a nozzle body, not shown here, can be rotated relative to a holding body of an injection valve and thus aligned.
Das Zentrierwerkzeug 40 ist becherförmig aufgebaut und weist eine axial ausgerichtete Bohrung 41 auf, so daß das Zentrierwerkzeug auf den Düsenkörper gesteckt werden kann. Im Mündungsbereich weist die Bohrung 41 des Zentrierwerkzeugs 40 eine nach Art einer Anfasung ausgebildete Kegel- fläche 42 auf, die in eine axial ausgerichtete ebene Fläche 43 übergeht.The centering tool 40 is cup-shaped and has an axially aligned bore 41, so that the centering tool can be plugged onto the nozzle body. In the mouth region, the bore 41 of the centering tool 40 has a conical surface 42 designed in the manner of a chamfer, which merges into an axially aligned flat surface 43.
Zum Zentrieren des Düsenkörpers gegenüber dem Haltekörper wird das Zentrierwerkzeug 40 auf den Düsenkörper gesteckt, welcher über eine Ventilspannmutter mit dem Haltekörper vormontiert ist, so daß an der Kegelfläche 42 eine an dem Düsenkörper korrespondierend ausgebildete Kegelfläche und an der ebenen Fläche 43 eine an dem Dusenkorper korrespondierend ausgebildete sogenannte Zentriernase anliegen. Der Düsenkörper hat in diesem Fall nur eine Zentriernase.To center the nozzle body with respect to the holding body, the centering tool 40 is plugged onto the nozzle body, which is pre-assembled with the holding body via a valve clamping nut, so that a conical surface corresponding to the nozzle body is formed on the conical surface 42 and one corresponding to the nozzle body on the flat surface 43 trained so-called centering nose. In this case, the nozzle body has only one centering nose.
In einem nachfolgenden Schritt wird das Zentrierwerkzeug 40 so lange in Umf ngsrichtung verdreht, bis zwischen dem Düsenkörper und dem Haltekörper die vorgeschriebene Winkel- Stellung eingenommen ist. Anschließend wird die Ventil- spannmutter angezogen, so daß der Düsenkörper und der Haltekörper drehfest miteinander verbunden sind . In a subsequent step, the centering tool 40 is rotated in the circumferential direction until the prescribed angular position has been assumed between the nozzle body and the holding body. Then the valve tightened nut so that the nozzle body and the holding body are rotatably connected.

Claims

Ansprüche Expectations
1. Einspritzventil, insbesondere für eine Verbrennungsmaschine, zumindest umfassend einen Düsenkörper (4) , in dem eine Düsennadel (5) axial verschiebbar geführt ist, sowie einen zumindest einteiligen Haltekörper (7) , in welchem Mittel zur Betätigung der Düsennadel (5) angeordnet sind, dadurch gekennzeichnet, daß der Düsenkörper (4) an seiner Umfangsflache Mittel (25, 26) zum Angriff eines Zentrierwerkzeugs (30) aufweist.1. Injection valve, in particular for an internal combustion engine, at least comprising a nozzle body (4), in which a nozzle needle (5) is axially displaceable, and an at least one-piece holding body (7), in which means for actuating the nozzle needle (5) are arranged , characterized in that the nozzle body (4) has on its peripheral surface means (25, 26) for engaging a centering tool (30).
2. Einspritzventil nach Anspruch 1, dadurch gekennzeichnet, daß die Mittel zum Angriff eines Zentrierwerkzeugs (30) als mindestens eine plane Fläche (25, 26) ausgebildet sind, die am Umfang des Düsenkörpers (4) angeordnet ist.2. Injection valve according to claim 1, characterized in that the means for engaging a centering tool (30) are designed as at least one flat surface (25, 26) which is arranged on the circumference of the nozzle body (4).
3. Einspritzventil nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Düsenkörper (4) und der Haltekörper (7) über eine Düsenspannmutter (9) miteinander verbunden sind, welche die Mittel (25, 26) zum Angriff eines Zentrierwerkzeugs (30) zumindest teilweise überdeckt. Einspritzventil nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß der Haltekörper (7) mindestens zwei Schlüsselflächen (33) aufweist, die im wesentlichen parallel zu den als mindestens eine plane Fläche (25, 26) ausgebildeten Mitteln zum Angriff eines Zentrierwerkzeugs (30) ausgerichtet sind. 3. Injection valve according to claim 1 or 2, characterized in that the nozzle body (4) and the holding body (7) via a nozzle clamping nut (9) are connected to each other, which means (25, 26) for engaging a centering tool (30) at least partially covered. Injection valve according to Claim 2 or 3, characterized in that the holding body (7) has at least two key surfaces (33) which are oriented essentially parallel to the means for engaging a centering tool (30) designed as at least one flat surface (25, 26) are.
EP02737752A 2001-03-29 2002-03-26 Injection valve Expired - Lifetime EP1373714B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10115649 2001-03-29
DE10115649 2001-03-29
PCT/DE2002/001092 WO2002079636A1 (en) 2001-03-29 2002-03-26 Injection valve

Publications (2)

Publication Number Publication Date
EP1373714A1 true EP1373714A1 (en) 2004-01-02
EP1373714B1 EP1373714B1 (en) 2010-07-28

Family

ID=7679606

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02737752A Expired - Lifetime EP1373714B1 (en) 2001-03-29 2002-03-26 Injection valve

Country Status (7)

Country Link
US (1) US7036754B2 (en)
EP (1) EP1373714B1 (en)
JP (1) JP2004518895A (en)
AT (1) ATE475803T1 (en)
DE (2) DE10139622B4 (en)
HU (1) HUP0302417A3 (en)
WO (1) WO2002079636A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050087624A1 (en) * 2002-05-10 2005-04-28 Siemens Aktiengesellschaft Injector for fuel injection
DE10250720A1 (en) * 2002-10-31 2004-05-13 Robert Bosch Gmbh Injector
DE102004011455A1 (en) * 2003-06-04 2004-12-30 Robert Bosch Gmbh Bourdon tube for actuator and method for assembling the Bourdon tube
WO2005080785A1 (en) * 2004-02-25 2005-09-01 Ganser-Hydromag Ag Fuel injection valve for internal combustion engines
DE102005015735A1 (en) * 2005-04-06 2006-10-12 Robert Bosch Gmbh Fuel injector
CH697562B1 (en) * 2005-08-09 2008-11-28 Ganser Hydromag Fuel injection valve.
DE102007045948B3 (en) * 2007-09-25 2008-09-25 L'orange Gmbh Mounting device for modular injector of internal combustion engine, has injector housing and nozzle body, which is connected with injector housing over axial overlapping of nozzle nut
DE102011051903A1 (en) 2011-07-18 2012-10-31 L'orange Gmbh Fuel injector has axially segmented housing structure with high- and low-side power supply connections, where hub-adjustable nozzle needle is accommodated in axial bore which is connected to high pressure side supply terminal
CN105563761A (en) * 2014-10-11 2016-05-11 柳道万和(苏州)热流道系统有限公司 Novel cylinder
DE102017101999A1 (en) * 2017-02-01 2018-08-02 Firma L'orange Gmbh Fuel injection injector for an internal combustion engine

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3499607A (en) 1968-05-07 1970-03-10 Bendix Corp Fuel injection valve device
GB1322943A (en) 1970-08-11 1973-07-11 Barkas Werke Veb Fuel injectors for internal combustion engines
US3716922A (en) * 1970-12-28 1973-02-20 E Shaver Gauging method and apparatus for diesel injector nozzles
DE2308261A1 (en) 1973-02-20 1974-08-22 Bosch Gmbh Robert FUEL INJECTOR
FR2228160B3 (en) 1973-05-02 1976-04-16 Atlantic Diesel As
US4413937A (en) * 1980-12-18 1983-11-08 Gutsche Guenter E Elements for a tool system
US4541206A (en) * 1983-10-17 1985-09-17 Iolab Corp. Fixture for holding an optical lens during tumbling
US4720903A (en) * 1986-12-12 1988-01-26 Sanford Landa Tool for assembly and disassembly of planetary for automatic transmission
IT220660Z2 (en) 1990-10-31 1993-10-08 Elasis Sistema Ricerca Fiat IMPROVEMENTS IN THE HIGH PRESSURE SHUTTER SYSTEM IN A PILOT VALVE OF AN ELECTROMAGNETIC INJECTOR FOR FUEL INJECTION SYSTEMS OF INTERNAL COMBUSTION ENGINES
EP0781917A1 (en) * 1995-12-26 1997-07-02 General Motors Corporation Fuel injector valve seat retention
US5680845A (en) * 1996-09-06 1997-10-28 Industrial Technology Research Institute Alignment device of dual-spray injectors for internal combustion engine
SE9700561D0 (en) * 1997-02-18 1997-02-18 Sigmec Ab Injectors for low emissions
GB9725805D0 (en) 1997-12-06 1998-02-04 Lucas Ind Plc Fuel injector nozzle
JP2000087828A (en) * 1998-09-11 2000-03-28 Honda Motor Co Ltd Engine
DE19951014A1 (en) * 1999-07-02 2001-01-04 Bosch Gmbh Robert Fuel injector

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO02079636A1 *

Also Published As

Publication number Publication date
DE10139622A1 (en) 2002-10-02
HUP0302417A3 (en) 2007-02-28
US7036754B2 (en) 2006-05-02
WO2002079636A1 (en) 2002-10-10
HUP0302417A2 (en) 2003-10-28
EP1373714B1 (en) 2010-07-28
DE50214552D1 (en) 2010-09-09
ATE475803T1 (en) 2010-08-15
DE10139622B4 (en) 2018-06-14
US20030168527A1 (en) 2003-09-11
JP2004518895A (en) 2004-06-24

Similar Documents

Publication Publication Date Title
EP0657644A2 (en) Fuel injection device for internal combustion engines
EP0657643B1 (en) Fuel injection device for internal combustion engines
EP0900332A1 (en) Valve for controlling fluids
WO2008083881A1 (en) Injector for injecting fuel into combustion chambers of internal combustion engines
EP1373714B1 (en) Injection valve
EP2206912A2 (en) Fuel injector
DE19936669A1 (en) Common rail injector
DE102008035087A1 (en) Injector
WO2008049665A1 (en) Fuel injection valve device
WO2007144226A1 (en) Fuel injector
WO2002092996A1 (en) Control valve for liquids
WO2005040598A1 (en) Valve for controlling a connection in a high-pressure liquid system, particularly a fuel injection device for an internal combustion engine
WO2001031191A2 (en) Fuel injection valve for internal combustion engines
WO2008058799A1 (en) Fuel injector
EP1504187B1 (en) Injector for fuel injection
DE10158337C1 (en) Fuel injection device used as an injector for internal combustion engines with direct injection comprises a discharge valve device having a valve component
EP4077908B1 (en) Injection nozzle for injecting fuel under high pressure
WO2005108773A1 (en) Injection valve for internal combustion engines
EP2165101B1 (en) Actuating arrangement
DE3841010A1 (en) ELECTROMAGNETICALLY ACTUABLE VALVE
WO2000017511A1 (en) Fuel injection device for internal combustion engines
EP1759115A1 (en) High pressure pump for a fuel injection device of an internal combustion engine
EP2146085B1 (en) Fuel injection valve device
WO2006048371A1 (en) Fuel injection device for an internal combustion engine
DE102005022535A1 (en) Nozzle group for injection valve comprises base body, needle guide body, nozzle needle movable within guide body, overlap area containing groove on guide body with anti-twist device; injection valve with said nozzle group

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

17P Request for examination filed

Effective date: 20031029

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

17Q First examination report despatched

Effective date: 20081017

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

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: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REF Corresponds to:

Ref document number: 50214552

Country of ref document: DE

Date of ref document: 20100909

Kind code of ref document: P

REG Reference to a national code

Ref country code: NL

Ref legal event code: VDEP

Effective date: 20100728

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

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100728

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100728

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

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101129

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100728

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

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

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100728

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101029

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

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100728

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100728

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100728

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

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101108

26N No opposition filed

Effective date: 20110429

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 50214552

Country of ref document: DE

Effective date: 20110429

BERE Be: lapsed

Owner name: ROBERT BOSCH G.M.B.H.

Effective date: 20110331

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

Ref country code: MC

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

Effective date: 20110331

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Effective date: 20110326

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20111130

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

Ref country code: BE

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

Effective date: 20110331

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: 20110331

Ref country code: CH

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

Effective date: 20110331

Ref country code: FR

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

Effective date: 20110331

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: 20110326

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 475803

Country of ref document: AT

Kind code of ref document: T

Effective date: 20110326

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

Ref country code: AT

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

Effective date: 20110326

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

Ref country code: LU

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

Effective date: 20110326

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

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100728

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

Ref country code: DE

Payment date: 20140523

Year of fee payment: 13

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50214552

Country of ref document: DE

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: 20151001