EP0163097A2 - Injection valve - Google Patents

Injection valve Download PDF

Info

Publication number
EP0163097A2
EP0163097A2 EP85104655A EP85104655A EP0163097A2 EP 0163097 A2 EP0163097 A2 EP 0163097A2 EP 85104655 A EP85104655 A EP 85104655A EP 85104655 A EP85104655 A EP 85104655A EP 0163097 A2 EP0163097 A2 EP 0163097A2
Authority
EP
European Patent Office
Prior art keywords
fuel
guide
metering
injection valve
nozzle needle
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.)
Ceased
Application number
EP85104655A
Other languages
German (de)
French (fr)
Other versions
EP0163097A3 (en
Inventor
Waldemar Hans
Mathias Linssen
Rudolf Dr. Dipl.-Ing. Sauer
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6236381&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0163097(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0163097A2 publication Critical patent/EP0163097A2/en
Publication of EP0163097A3 publication Critical patent/EP0163097A3/en
Ceased legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
    • F02M51/0671—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto
    • F02M51/0675—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 valve body having cylindrical guiding or metering portions, e.g. with fuel passages
    • F02M51/0678—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 valve body having cylindrical guiding or metering portions, e.g. with fuel passages all portions having fuel passages, e.g. flats, grooves, diameter reductions
    • 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
    • F02M51/08—Injectors peculiar thereto with means directly operating the valve needle specially for low-pressure fuel-injection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/162—Means to impart a whirling motion to fuel upstream or near discharging orifices
    • F02M61/163—Means being injection-valves with helically or spirally shaped grooves
    • 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
    • F02M61/165—Filtering elements specially adapted in fuel inlets to injector

Definitions

  • the invention is based on an injection valve according to the preamble of the main claim.
  • An injection valve is already known in which, in order to avoid deposits on the metering cross-sections, which arise from combustion residues in the intake pipe or through evaporation residues from the fuel and can lead to a change in the metered fuel quantity, the metering cross-sections are moved upstream of the sealing section and as surfaces are formed on a guide section of the nozzle needle. This has the disadvantage that both the manufacturing tolerances of the guide bore and the metering surfaces on the guide section must be taken into account when manufacturing the metering cross sections.
  • the injection valve according to the invention with the characterizing - nenden contrast, features of the main claim has the advantage that the formation of deposits on the fuel avoided measuring points and the fuel metering points can be manufactured in a simple manner.
  • FIG. 1 shows a first exemplary embodiment of an injection valve according to the invention
  • FIG. 2 shows a detail of a second exemplary embodiment of an injection valve according to the invention.
  • the fuel injection valve for example shown in FIG. 1 for a fuel injection system of a mixed-ignition spark-ignition internal combustion engine has a valve housing 1 made of ferromagnetic material, in which a magnet coil 3 is arranged on a coil carrier 2.
  • the magnet coil 3 has a power supply via a plug connection 4 which is embedded in a plastic ring 5 which partially encompasses the valve housing 1.
  • the coil carrier 2 of the magnet coil 3 is seated in a coil space 6 of the valve housing 1 on a connecting piece 7 which supplies fuel, for example gasoline, and which projects partially into the valve housing 1.
  • the valve housing 1 partially encloses a nozzle body 9 facing away from the fuel nozzle 7.
  • the cylindrical armature 14 of the fuel injection valve is located between an end face 11 of the connecting piece 7 and a stop plate 12 which has a certain thickness and which is placed on an inner shoulder 13 of the valve housing 1 for the precise adjustment of the valve.
  • the armature 14 consists of a magnetic material which is not susceptible to corrosion.
  • a compression spring 16 acting on the armature 14 is arranged between the armature 14 and a pipe insert 15 fastened in the connecting piece 7 by pulling it in.
  • a nozzle needle 17 is fastened in the armature 14 by inserting it with an annular groove end 18 into an anchor hole 19 of the armature 14 and holding it in such a way that the anchor material is pressed radially inward into the annular grooves of the annular groove end 18.
  • the nozzle needle 17 penetrates with radial clearance a through opening 20 in the stop plate 12 and a guide bore 21 in the nozzle body 9 and protrudes with a needle pin 22 from an injection opening 23 of the nozzle body 9. Between the guide bore 21 of the nozzle body 9 and the injection opening 23, a conical valve seat surface 24 is formed, which cooperates with a conical sealing section 25 on the nozzle needle 17.
  • the length of the nozzle needle 17 and the armature 14 is based on the seal Section 25 dimensioned such that the armature 14 leaves a working gap A in the non-excited state of the magnet coil 3 with respect to the end face 11 of the connecting piece 7.
  • the nozzle needle 17 has two guide sections 33 and 34, which give the nozzle needle 17 guidance in the guide bore 21 and have an axial passage for the fuel, for which purpose the guide section 33 located upstream of the guide section 34 is designed, for example, as a square.
  • a recess 37 is provided between the passage opening 20 and the circumference of the stop plate 12, the clear width of which is larger than the diameter of the nozzle needle in the corresponding region 38 of the nozzle needle 17 between the annular groove end 18 and the stop shoulder 39 of the nozzle needle 17.
  • the magnetic flux is passed through the jacket of the valve housing 1 via a magnetic flux guide section 40 to the cylindrical armature 14 and from there via the connector 7 serving as the core with a guide flange 4 + 1 back to the valve housing.
  • the magnetic flux guide paragraph 40 of the valve housing 1 is directed radially inward and engages around the armature 14.
  • cylindrical guides Cut 34 metering holes 43 for example four, through which the fuel can flow from upstream of the guide section 34 to the downstream of the guide section 34, with a pressure drop of approximately 80 to 85% taking place, while the remaining pressure is used for fuel processing, between the injection opening 23 and the needle pin 22 degrades.
  • the metering holes 43 are not open in the radial direction towards the guide hole 21 and can run parallel to the guide hole 21 or, as shown in FIG. 2, inclined, these metering holes additionally being able to run in such a way that the fuel emerges from the metering holes 43 with a swirl.
  • the metering holes 43 can be easily produced without being influenced by the manufacturing tolerances of the guide hole 21 and the guide section 34.
  • the arrangement of the metering holes 43 upstream of the valve seat surface 24 prevents deposits on the metering holes 43. Deposits in the relatively large gap between the needle pin 22 and the wall of the injection opening 23 only have a negligible influence on the metered fuel quantity.

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)

Abstract

Es wird ein Einspritzventil für Kraftstoffeinspritzanlagen für Brennkraftmaschinen vorgeschlagen, das zur Einspritzung von Kraftstoff in das Saugrohr dient. Das Einspritzventil umfaßt ein Ventilgehäuse (1) aus ferromagnetischem Material, in dem ein als Kern dienender Anschlußstutzen (7) gehalten ist, mit dem ein Anker (14) zusammenwirkt. Mit dem Ventilgehäuse (1) ist ein Düsenkorper (9) mit einem Ventilsitz (24) verbunden, mit dem ein Dichtabschnitt (25) einer Düsennadel (17) zusammenarbeitet. Die Düsennadel (17) wird durch Führungsabschnitte (33, 34) in einer Führungsbohrung (21) des Düsenkorpers (9) geführt, wobei dur sich an den Dichtabschnitt (25) anschließende Führungsabschnitt (34) mit Zumeßbohrungen (43) versehen ist. Durch die Kraftstoffzumessung stromaufwärts des Ventilsitzes (24) wird eine Beeinträchtigung der Kraftstoffzumessung durch Ablagerungen vermieden.An injection valve for fuel injection systems for internal combustion engines is proposed, which is used to inject fuel into the intake manifold. The injection valve comprises a valve housing (1) made of ferromagnetic material, in which a connecting piece (7) serving as a core is held, with which an armature (14) cooperates. A nozzle body (9) is connected to the valve housing (1) with a valve seat (24), with which a sealing section (25) of a nozzle needle (17) cooperates. The nozzle needle (17) is guided through guide sections (33, 34) in a guide bore (21) of the nozzle body (9), the guide section (34) adjoining the sealing section (25) being provided with metering bores (43). The fuel metering upstream of the valve seat (24) prevents the fuel metering from being impaired by deposits.

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einem Einspritzventil nach der Gattung des Hauptanspruchs. Es ist bereits ein Einspritzventil bekannt, bei dem zur Vermeidung von Ablagerungen an den Zumeßquerschnitten, die durch Verbrennungsrückstände im Ansaugrohr oder durch Abdampfrückstände aus dem Kraftstoff entstehen und zu einer Änderung der zugemessenen Kraftstoffmenge führen können, die Zumeßquerschnitte nach stromaufwärts des Dichtabschnittes verlegt werden und als Flächen an einem Führungsabschnitt der Düsennadel ausgebildet sind. Dabei ergibt sich der Nachteil, daß bei der Fertigung der Zumeßquerschnitte sowohl die Fertigungstoleranzen der Führungsbohrung als auch der Zumeßflächen an dem Führungsabschnitt berücksichtigt werden müssen.The invention is based on an injection valve according to the preamble of the main claim. An injection valve is already known in which, in order to avoid deposits on the metering cross-sections, which arise from combustion residues in the intake pipe or through evaporation residues from the fuel and can lead to a change in the metered fuel quantity, the metering cross-sections are moved upstream of the sealing section and as surfaces are formed on a guide section of the nozzle needle. This has the disadvantage that both the manufacturing tolerances of the guide bore and the metering surfaces on the guide section must be taken into account when manufacturing the metering cross sections.

Vorteile der ErfindungAdvantages of the invention

Das erfindungsgemäße Einspritzventil mit den kennzeich- nenden Merkmalen des Hauptanspruchs hat demgegenüber den Vorteil, daß die Bildung von Belägen an den Kraftstoffzumeßstellen vermieden und die Kraftstoffzumeßstellen auf einfache Art und Weise gefertigt werden können.The injection valve according to the invention with the characterizing - nenden contrast, features of the main claim has the advantage that the formation of deposits on the fuel avoided measuring points and the fuel metering points can be manufactured in a simple manner.

Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen des im Hauptanspruch angegebenen Einspritzventiles möglich. Besonders vorteilhaft ist es, die Zumeßbohrungen geneigt zur Führungsbohrung auszubilden, wodurch der abgespritzte Kraftstoffstrahl in seiner Form und Aufbereitung beeinflußt werden kann, insbesondere durch Erzeugung eines Dralls.Advantageous further developments and improvements of the injection valve specified in the main claim are possible through the measures listed in the subclaims. It is particularly advantageous to design the metering bores inclined to the guide bore, as a result of which the sprayed fuel jet can be influenced in its shape and processing, in particular by generating a swirl.

Zeichnungdrawing

Ausführungsbeispiele der Erfindung sind in der Zeichnung vereinfacht dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen Figur 1 ein erstes Ausführungsbeispiel eines erfindungsgemäßen Einspritzventiles, Figur 2 ausschnittsweise ein zweites Ausführungsbeispiel eines erfindungsgemäßen Einspritzventiles.Embodiments of the invention are shown in simplified form in the drawing and explained in more detail in the following description. FIG. 1 shows a first exemplary embodiment of an injection valve according to the invention, FIG. 2 shows a detail of a second exemplary embodiment of an injection valve according to the invention.

Beschreibung der AusführungsbeispieleDescription of the embodiments

Das in der Figur 1 beispielsweise dargestellte Kraftstoffeinspritzventil für eine Kraftstoffeinspritzanlage einer gemischverdiehtenden fremdgezündeten Brennkraftmaschine hat ein Ventilgehäuse 1 aus ferromagnetischem Material, in dem auf einem Spulenträger 2 eine Magnetspule 3 angeordnet ist. Die Magnetspule 3 hat eine Stromzuführung über einen Steckanschluß 4, der in einem das Ventilgehäuse 1 teilweise umgreifenden.Kunststoffring 5 eingebettet ist.The fuel injection valve for example shown in FIG. 1 for a fuel injection system of a mixed-ignition spark-ignition internal combustion engine has a valve housing 1 made of ferromagnetic material, in which a magnet coil 3 is arranged on a coil carrier 2. The magnet coil 3 has a power supply via a plug connection 4 which is embedded in a plastic ring 5 which partially encompasses the valve housing 1.

Der Spulenträger 2 der Magnetspule 3 sitzt in einem Spulenraum 6 des Ventilgehäuses 1 auf einem den Kraftstoff, beispielsweise Benzin zuführenden Anschlußstutzen 7, der teilweise in das Ventilgehäuse 1 ragt. Das Ventilgehäuse 1 umschließt dem Kraftstoffstutzen 7 abgewandt teilweise einen Düsenkörper 9.The coil carrier 2 of the magnet coil 3 is seated in a coil space 6 of the valve housing 1 on a connecting piece 7 which supplies fuel, for example gasoline, and which projects partially into the valve housing 1. The valve housing 1 partially encloses a nozzle body 9 facing away from the fuel nozzle 7.

Zwischen einer Stirnfläche 11 des Anschlußstutzens 7 und einer zum genauen Einstellen des Ventils eine bestimmte Dicke aufweisenden Anschlagplatte 12, die auf eine Innenschulter 13 des Ventilgehäuses 1 aufgesetzt ist, befindet sich der zylindrische Anker 14 des Kraftstoffeinspritzventils. Der Anker 14 besteht aus einem nicht korrosionsanfälligen, magnetischen Material. Zwischen dem Anker 14 und einem im Anschlußstutzen 7 durch Einziehen desselben befestigten Rohreinsatz 15 ist eine auf den Anker 14 einwirkende Druckfeder 16 angeordnet. Auf der anderen Seite ist im Anker 14 eine Düsennadel 17 befestigt, indem diese mit einem Ringnutende 18 in eine Ankerbohrung 19 des Ankers 14 eingesetzt und dadurch gehalten wird, daß das Ankermaterial radial nach innen in die Ringnuten des Ringnutendes 18 gepreßt wird.The cylindrical armature 14 of the fuel injection valve is located between an end face 11 of the connecting piece 7 and a stop plate 12 which has a certain thickness and which is placed on an inner shoulder 13 of the valve housing 1 for the precise adjustment of the valve. The armature 14 consists of a magnetic material which is not susceptible to corrosion. A compression spring 16 acting on the armature 14 is arranged between the armature 14 and a pipe insert 15 fastened in the connecting piece 7 by pulling it in. On the other hand, a nozzle needle 17 is fastened in the armature 14 by inserting it with an annular groove end 18 into an anchor hole 19 of the armature 14 and holding it in such a way that the anchor material is pressed radially inward into the annular grooves of the annular groove end 18.

Die Düsennadel 17 durchdringt mit Radialspiel eine Durchgangsöffnung 20 in der Anschlagplatte 12 und eine Führungsbohrung 21 im Düsenkörper 9 und ragt mit einem Nadelzapfen 22 aus einer Einspritzöffnung 23 des Düsenkörpers 9 heraus. Zwischen der Führungsbohrung 21 des Düsenkörpers 9 und der Einspritzöffnung 23 ist eine kegelige Ventilsitzfläche 24 gebildet, die mit einem kegligen Dichtabschnitt 25 an der.Düsennadel 17 zusammenwirkt. Die Länge der Düsennadel 17 und des Ankers 14 ist ausgehend von dem Dichtabschnitt 25 derart bemessen, daß der Anker 14 im nichterregten Zustand der Magnetspule 3 gegenüber der Stirnfläche 11 des Anschlußstutzens 7 einen Arbeitsspalt A freiläßt.The nozzle needle 17 penetrates with radial clearance a through opening 20 in the stop plate 12 and a guide bore 21 in the nozzle body 9 and protrudes with a needle pin 22 from an injection opening 23 of the nozzle body 9. Between the guide bore 21 of the nozzle body 9 and the injection opening 23, a conical valve seat surface 24 is formed, which cooperates with a conical sealing section 25 on the nozzle needle 17. The length of the nozzle needle 17 and the armature 14 is based on the seal Section 25 dimensioned such that the armature 14 leaves a working gap A in the non-excited state of the magnet coil 3 with respect to the end face 11 of the connecting piece 7.

Die Düsennadel 17 hat zwei Führungsabschnitte 33 und 34, die der Düsennadel 17 in der Führungsbohrung 21 Führung geben sowie einen Axialdurchgang für den Kraftstoff aufweisen, wozu der stromaufwärts des Führungsabschnittes 34 liegende Führungsabschnitt 33 beispielsweise als Vierkant ausgebildet ist.The nozzle needle 17 has two guide sections 33 and 34, which give the nozzle needle 17 guidance in the guide bore 21 and have an axial passage for the fuel, for which purpose the guide section 33 located upstream of the guide section 34 is designed, for example, as a square.

Zwischen der Durchgangsöffnung 20 und dem-Umfang der Anschlagplatte 12 ist eine Aussparung 37 vorgesehen, deren Lichte Weite größer als der Durchmesser der Düsennadel in dem entsprechenden Bereich 38 der Düsennadel 17 zwischen dem Ringnutende 18 und der Anschlagschulter 39 der Düsen- nadel 17 ist. In erregtem Zustand der Magnetspule 3 wird der Anker 14 in Öffnungsrichtung der Düsennadel 17 entgegen der Kraft der Druckfeder 16 bewegt und liegt mit der Anschlagschulter 39 an der Anschlagplatte 12 an.A recess 37 is provided between the passage opening 20 and the circumference of the stop plate 12, the clear width of which is larger than the diameter of the nozzle needle in the corresponding region 38 of the nozzle needle 17 between the annular groove end 18 and the stop shoulder 39 of the nozzle needle 17. When the magnet coil 3 is excited, the armature 14 is moved in the opening direction of the nozzle needle 17 against the force of the compression spring 16 and bears against the stop plate 12 with the stop shoulder 39.

Der Magnetfluß wird durch den Mantel des Ventilgehäuses 1 über einen Magnetflußleitabsatz 40 zum zylindrischen Anker 14 geleitet und von dort über den als Kern dienenden Anschlußstutzen 7 mit einem Leitflansch 4+1 zurück zum Ventilgehäuse. Der Magnetflußleitabsatz 40 des Ventilgehäuses 1 ist radial nach innen gerichtet und umgreift den Anker 14.The magnetic flux is passed through the jacket of the valve housing 1 via a magnetic flux guide section 40 to the cylindrical armature 14 and from there via the connector 7 serving as the core with a guide flange 4 + 1 back to the valve housing. The magnetic flux guide paragraph 40 of the valve housing 1 is directed radially inward and engages around the armature 14.

Erfindungsgemäß sind in dem nahe des Dichtabschnittes 25 an der Düsennadel 17 zylindrisch ausgebildeten Führungsabschnitt 34 Zumeßbohrungen 43 eingearbeitet, beispielsweise vier, über die der Kraftstoff von stromaufwärts des Führungsabschnittes 34 nach stromabwärts des Führungsabschnittes 34 strömen kann, wobei ca. ein Druckabfall von 80 bis 85 % erfolgt, während sich der restliche Druck zur Kraftstoffaufbereitung dienend, zwischen der Einspritzöffnung 23 und dem Nadelzapfen 22 abbaut. Die Zumeßbohrungen 43 sind nicht in radialer Richtung zur Führungsbohrung 21 hin geöffnet und können parallel zur Führungsbohrung 21 verlaufen oder, wie in Figur 2 gezeigt, geneigt, wobei diese Zumeßbohrungen zusätzlich so verlaufen können, daß der Kraftstoff aus den Zumeßbohrungen 43 mit einem Drall austritt.According to the invention, in the vicinity of the sealing section 25 on the nozzle needle 17 are cylindrical guides Cut 34 metering holes 43, for example four, through which the fuel can flow from upstream of the guide section 34 to the downstream of the guide section 34, with a pressure drop of approximately 80 to 85% taking place, while the remaining pressure is used for fuel processing, between the injection opening 23 and the needle pin 22 degrades. The metering holes 43 are not open in the radial direction towards the guide hole 21 and can run parallel to the guide hole 21 or, as shown in FIG. 2, inclined, these metering holes additionally being able to run in such a way that the fuel emerges from the metering holes 43 with a swirl.

Die Zumeßbohrungen 43 können unbeeinflußt durch die Fertigungstoleranzen der Führungsbohrung 21 und des Führungsabschnittes 34 einfach hergestellt werden. Durch die Anordnung der Zumeßbohrungen 43 stromaufwärts der Ventilsitzfläche 24 werden Ablagerungen an den Zumeßbohrungen 43 verhindert. Ablagerungen in dem relativ großen Spalt zwischen dem Nadelzapfen 22 und der Wandung der Einspritzöffnung 23 führen nur zu einer vernachlässigbar geringen Beeinflussung der zugemessenen Kraftstoffmenge.The metering holes 43 can be easily produced without being influenced by the manufacturing tolerances of the guide hole 21 and the guide section 34. The arrangement of the metering holes 43 upstream of the valve seat surface 24 prevents deposits on the metering holes 43. Deposits in the relatively large gap between the needle pin 22 and the wall of the injection opening 23 only have a negligible influence on the metered fuel quantity.

Claims (3)

1. Einspritzventil für Kraftstoffeinspritzanlagen von Brennkraftmaschinen mit einem in einem Düsenkörper vorgesehenen Ventilsitz und einer Düsennadel, die einen mit dem Ventilsitz zusammenwirkenden Dichtabschnitt und stromaufwärts einen die Düsennadel in einer Führungsbohrung mit seinem Umfang führenden Führungsabschnitt aufweist, dadurch gekennzeichnet, daß am Führungsabschnitt (34) zur Kraftstoffzumessung dienende Zumeßbohrungen (43) ausgebildet sind, über die der Kraftstoff von stromaufwärts des Führungsabschnittes (34) nach stromabwärts des Führungsabschnittes (34) strömen kann.1.Injection valve for fuel injection systems of internal combustion engines with a valve seat provided in a nozzle body and a nozzle needle, which has a sealing section interacting with the valve seat and upstream one of the nozzle needle in a guide bore with its circumferential guide section, characterized in that the guide section (34) for Dosing holes (43) serving for fuel metering are formed through which the fuel can flow from upstream of the guide section (34) to downstream of the guide section (34). 2. Einspritzventil nach Anspruch 1, dadurch gekennzeichnet, daß die Zumeßbohrungen (43) parallel zur Führungsbohrung (21) verlaufen.2. Injection valve according to claim 1, characterized in that the metering bores (43) run parallel to the guide bore (21). 3. Einspritzventil nach Anspruch 1, dadurch gekennzeichnet, daß die Zumeßbohrungen (43) geneigt zur Führungsbohrung (21) verlaufen.3. Injection valve according to claim 1, characterized in that the metering bores (43) are inclined to the guide bore (21).
EP85104655A 1984-05-19 1985-04-17 Injection valve Ceased EP0163097A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3418761 1984-05-19
DE19843418761 DE3418761A1 (en) 1984-05-19 1984-05-19 INJECTION VALVE

Publications (2)

Publication Number Publication Date
EP0163097A2 true EP0163097A2 (en) 1985-12-04
EP0163097A3 EP0163097A3 (en) 1987-11-11

Family

ID=6236381

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85104655A Ceased EP0163097A3 (en) 1984-05-19 1985-04-17 Injection valve

Country Status (4)

Country Link
US (1) US4651931A (en)
EP (1) EP0163097A3 (en)
JP (1) JPS60256552A (en)
DE (1) DE3418761A1 (en)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3543289A1 (en) * 1985-12-07 1987-06-11 Bosch Gmbh Robert Injection valve
DE3602956A1 (en) * 1986-01-31 1987-08-06 Vdo Schindling ELECTROMAGNETICALLY ACTUABLE FUEL INJECTION VALVE
DE3624477A1 (en) * 1986-07-19 1988-01-28 Bosch Gmbh Robert INJECTION VALVE
DE3624476A1 (en) * 1986-07-19 1988-01-28 Bosch Gmbh Robert INJECTION VALVE
US5161743A (en) * 1986-10-24 1992-11-10 Nippondenso Co., Ltd. Electromagnetic fuel injection valve for internal combustion engine
US5156342A (en) * 1986-10-24 1992-10-20 Nippondenso Co. Ltd. Electromagnetic fuel injection valve for internal combustion engine
JP2643175B2 (en) * 1986-10-24 1997-08-20 株式会社デンソー Electromagnetic fuel injection valve for internal combustion engine
US5080287A (en) * 1986-10-24 1992-01-14 Nippondenso Co., Ltd. Electromagnetic fuel injection valve for internal combustion engine
JPH02503101A (en) * 1986-10-30 1990-09-27 ジーメンス・アクティエンゲゼルシャフト high pressure swirl injector
DE8632002U1 (en) * 1986-11-28 1988-03-31 Robert Bosch Gmbh, 7000 Stuttgart Fuel injection valve
DE3643523A1 (en) * 1986-12-19 1988-06-30 Bosch Gmbh Robert INJECTION VALVE FOR FUEL INJECTION SYSTEMS
DE8802722U1 (en) * 1988-03-01 1988-04-14 Industrial Technology Research Institute, Hsinchu Mini fuel injector
DE3825135A1 (en) * 1988-07-23 1990-01-25 Bosch Gmbh Robert ELECTROMAGNETICALLY ACTUABLE VALVE
US5172865A (en) * 1989-01-12 1992-12-22 Toyota Jidosha Kabushiki Kaisha Fuel supply device of an engine
DE3904447A1 (en) * 1989-02-15 1990-08-16 Bosch Gmbh Robert MAGNETIC TANK
DE3914486A1 (en) * 1989-05-02 1990-11-08 Bosch Gmbh Robert METHOD FOR PRODUCING A VALVE NEEDLE AND VALVE NEEDLE
DE3925212C2 (en) * 1989-07-29 1997-03-27 Bosch Gmbh Robert Electromagnetically actuated valve
US4971254A (en) * 1989-11-28 1990-11-20 Siemens-Bendix Automotive Electronics L.P. Thin orifice swirl injector nozzle
US5100102A (en) * 1990-10-15 1992-03-31 Ford Motor Company Compact electronic fuel injector
DK167502B1 (en) * 1991-10-04 1993-11-08 Man B & W Diesel Gmbh FUEL ENGINE FOR COMBUSTION ENGINES
JP3136829B2 (en) * 1993-05-06 2001-02-19 株式会社デンソー Fuel injection valve
JP3473884B2 (en) * 1996-07-29 2003-12-08 三菱電機株式会社 Fuel injection valve
DE19633260A1 (en) * 1996-08-17 1998-02-19 Bosch Gmbh Robert Injection valve, in particular for injecting fuel directly into a combustion chamber of an internal combustion engine
US5862996A (en) * 1997-01-10 1999-01-26 The Procter & Gamble Company Laminar flow nozzle
DE10049518B4 (en) * 2000-10-06 2005-11-24 Robert Bosch Gmbh Fuel injector
DE50105211D1 (en) * 2001-11-16 2005-03-03 Bosch Gmbh Robert Fuel injector
DE602004018259D1 (en) * 2004-01-28 2009-01-22 Continental Automotive Italy S Injection valve with deformable needle
JP4296519B2 (en) * 2006-12-19 2009-07-15 株式会社日立製作所 Fuel injection valve
ATE551521T1 (en) * 2008-04-18 2012-04-15 Magneti Marelli Spa FUEL INJECTION NOZZLE WITH DIRECT CLOSURE OPERATION FOR COMBUSTION ENGINES
DE102008031271B4 (en) * 2008-07-02 2011-07-28 Continental Automotive GmbH, 30165 Nozzle assembly for an injection valve
US8573559B1 (en) * 2012-04-18 2013-11-05 Husco Automotive Holdings, LLC Control valve with area independent pressure sensing
US8931717B2 (en) * 2012-10-03 2015-01-13 Control Components, Inc. Nozzle design for high temperature attemperators
US8955773B2 (en) * 2012-10-03 2015-02-17 Control Components, Inc. Nozzle design for high temperature attemperators
US10288280B2 (en) 2014-08-04 2019-05-14 Cci Italy Srl Dual cone spray nozzle assembly for high temperature attemperators

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1912727A1 (en) * 1969-03-13 1970-10-01 Curt Berger Process for the surface treatment of ammunition cases made of non-metallic materials, such as cartridges, and ammunition containers made according to this
US4192466A (en) * 1977-02-21 1980-03-11 Kabushiki Kaisha Toyota Chuo Kenkyusho Swirl injection valve
GB2123085A (en) * 1982-07-06 1984-01-25 Bosch Gmbh Robert I c engine fuel injection valve
DE3418762A1 (en) * 1984-05-19 1985-11-21 Robert Bosch Gmbh, 7000 Stuttgart INJECTION VALVE

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1664613A (en) * 1926-01-27 1928-04-03 Louis O French Electromagnetic valve
US2332909A (en) * 1937-04-14 1943-10-26 Fuscaldo Ottavio Fuel injection valve apparatus
US2687869A (en) * 1950-04-06 1954-08-31 Borg Warner Flow restrictor valve
DE2127460C3 (en) * 1971-06-03 1973-11-22 Maschinenfabrik Augsburg-Nuernberg Ag, 8900 Augsburg Rotationally symmetrical fuel injector
GB1470373A (en) * 1973-06-30 1977-04-14 British Leyland Uk Ltd Fuel injector
JPS5348120A (en) * 1976-10-14 1978-05-01 Nippon Denso Co Ltd Solenoid fuel injection valve
JPS5469830A (en) * 1977-11-16 1979-06-05 Katsumi Eguchi Single seat type spherical regulating valve
JPS55161957A (en) * 1979-06-05 1980-12-16 Nippon Denso Co Ltd Solenoid type fuel injection valve

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1912727A1 (en) * 1969-03-13 1970-10-01 Curt Berger Process for the surface treatment of ammunition cases made of non-metallic materials, such as cartridges, and ammunition containers made according to this
US4192466A (en) * 1977-02-21 1980-03-11 Kabushiki Kaisha Toyota Chuo Kenkyusho Swirl injection valve
GB2123085A (en) * 1982-07-06 1984-01-25 Bosch Gmbh Robert I c engine fuel injection valve
DE3418762A1 (en) * 1984-05-19 1985-11-21 Robert Bosch Gmbh, 7000 Stuttgart INJECTION VALVE

Also Published As

Publication number Publication date
US4651931A (en) 1987-03-24
DE3418761A1 (en) 1985-11-21
EP0163097A3 (en) 1987-11-11
JPS60256552A (en) 1985-12-18

Similar Documents

Publication Publication Date Title
EP0163097A2 (en) Injection valve
DE3225180A1 (en) INJECTION VALVE
DE3502410A1 (en) ELECTROMAGNETICALLY ACTUABLE FUEL INJECTION VALVE
EP0310819A1 (en) Fuel injection valve
EP0937202A1 (en) Fuel injection valve
DE3418762A1 (en) INJECTION VALVE
EP0310607A1 (en) Fuel injection valve.
DE2900176A1 (en) INJECTION VALVE FOR FUEL INJECTION SYSTEMS
DE3643523A1 (en) INJECTION VALVE FOR FUEL INJECTION SYSTEMS
DE3328467A1 (en) ELECTROMAGNETICALLY ACTUABLE VALVE
DE3012416A1 (en) Fuel-injection valve with capillary channel - which prevents gas reaching metering point and forming deposits reducing cross=section
DE3540660C2 (en)
EP1155231A1 (en) Fuel injection valve
EP1434942B1 (en) Fuel injection valve
DE4131499C1 (en) IC engine fuel injection valve - has ring gap between downstream continuation of sealing and seating surfaces of nozzle
DE4229730A1 (en) Electromagnetically actuated fuel injector
DE10065528A1 (en) Fuel injector
DE10046306A1 (en) Fuel injector
DE2905099C2 (en)
EP1066468B1 (en) Fuel injection valve
DE10050055A1 (en) Fuel injection valve for internal combustion engine has threaded rod as spiral forming element
DE10050752B4 (en) Fuel injection valve with a swirl-generating element
DE10049034B4 (en) Fuel injector
DE3411537A1 (en) Electromagnetically operatable fuel injection valve
DE3543289A1 (en) Injection valve

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: 19850417

AK Designated contracting states

Designated state(s): DE FR GB IT

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB IT

17Q First examination report despatched

Effective date: 19880519

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

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 19901126

APAF Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNE

RIN1 Information on inventor provided before grant (corrected)

Inventor name: HANS, WALDEMAR

Inventor name: LINSSEN, MATHIAS

Inventor name: SAUER, RUDOLF, DR. DIPL.-ING.