EP1366285B1 - Fastening device - Google Patents
Fastening device Download PDFInfo
- Publication number
- EP1366285B1 EP1366285B1 EP02719641A EP02719641A EP1366285B1 EP 1366285 B1 EP1366285 B1 EP 1366285B1 EP 02719641 A EP02719641 A EP 02719641A EP 02719641 A EP02719641 A EP 02719641A EP 1366285 B1 EP1366285 B1 EP 1366285B1
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- EP
- European Patent Office
- Prior art keywords
- fuel injection
- injection valve
- holding
- cylinder head
- fastening device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
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- 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
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
- F02M69/462—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down
- F02M69/465—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down of fuel rails
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- 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
- F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors
Definitions
- the invention relates to a fuel injection valve with a fastening device for fastening the fuel injection valve according to the preamble of the main claim.
- DE 29 26 490 C2 discloses a fastening device for a fuel injection valve for attachment to a suction pipe, in which the axial fixation of the fuel injection valve to the fuel rail or to a plug-in nipple by a fastener, which is designed as a U-shaped securing clip which is provided with two radially resilient legs.
- the securing clip engages in the assembled state by corresponding recesses of the plug-in nipple and can be latched in a recess formed as an annular groove in a connecting piece of the fuel injection valve.
- the axial clearance between the recesses and the securing clip as well as between the annular groove and the securing clip should be kept small in order to achieve an exact fixation of the fuel injection valve without tension of the seal.
- a disadvantage of the fastening device known from DE 29 26 490 C2 is in particular the bracing effect of the various mounting parts on the fuel injection valve.
- the power flow generated in the fuel injection valve leads to deformations and thus changes in the stroke of the valve needle to jamming and to a pressure or bending load of the housing parts, which are generally thin-walled and welded together at several points.
- each fastening measure leads, for example by a support collar to increase the radial extent of the fuel injection valve and thus to an increased space requirement during installation.
- a fastening device for fastening a fuel injection valve in a cylinder head of an internal combustion engine which comprises at least one hold-down, which is fixed to an end face of the cylinder head and the fuel injection valve fixed in a receiving bore of the cylinder head.
- the hold-down device designed in the form of a clamping claw is supported by a bearing section on a flange formed on a downstream end of the fuel injection valve, wherein the fuel injection valve is at least partially enclosed by a fork-like configuration of the hold-down device.
- the hold-down is shaped so that it is biased in the assembled state in some way.
- the annular projecting beyond the outer contour of the fuel injection valve flange is flat with a flat support surface, which engages the support portion of the blank holder.
- the fuel injection valve according to the invention with a fastening device for the fuel injection valve having the characterizing features of the main claim has the advantage that the fuel injection valve at a discharge end has a collar or paragraph attached thereto, on which a flexible hold-down engages which the end of the fuel injection valve in whole or in part includes, whereby the fuel injection valve is held down in the cylinder head.
- a flexible hold-down engages which the end of the fuel injection valve in whole or in part includes, whereby the fuel injection valve is held down in the cylinder head.
- axial or bending forces act on the valve housing only at the downstream end.
- the paragraph is provided in an advantageous manner in the transition to a spherical shape at the downstream end of the fuel injection valve.
- hold-downs can be produced simply by stamping from sheet metal and are suitable both for individual fuel injection valves and for row arrangements of fuel injection valves.
- the hold-downs are fixed by screws or clamps in a simple manner on the front side of the cylinder head.
- a further advantage is that the hold-down is formed in the form of a hold-down pot, which gives the fuel injection valve in the receiving bore of the cylinder head greater stability.
- Another advantage is the formation of slits and elastic tabs at the end of the hold-down pot, which allow a quick and easy assembly and disassembly of the fuel injector.
- the fastening device can be installed in almost any receiving bore of a cylinder head and can thus also be used as an adapter for large bore cross-sections.
- Fig. 1 shows a highly schematic partial section through a first embodiment of an inventively designed fastening device for a fuel injection valve.
- a fuel injection valve 1 is designed in the form of a directly injecting fuel injection valve 1, which is installed in a cylinder head 2 for the direct injection of fuel into a combustion chamber of a non-illustrated, in particular mixture-compressing spark-ignition internal combustion engine.
- the fuel injection valve 1 has a connection to a fuel feed line 4 at an inlet end 3.
- the fuel injection valve 1 has a connection 5 for the electrical contacting for actuating the fuel injection valve 1.
- a shoulder 7 is formed, which bears against a wall 8 of a receiving bore 9 of the cylinder head 2.
- the paragraph 7 can be made for example by turning, or it can be fixed by welding a spherical shape at the downstream end 6 of the fuel injection valve 1, which also still a good guide in the receiving bore 9 is achieved.
- a fastening device 10 is provided according to the invention.
- the fastening device 10 consists of a hold-down 11, which in the present first embodiment is formed in two parts and abuts the downstream end 6 of the fuel injection valve 1.
- the hold-down device 11 are punched from sheet metal, for example.
- the hold-down devices 11 are supported on the shoulder 7 formed at the downstream end 6 of the fuel injection valve 1.
- the holding-down devices 11 are provided with side parts 16 on an end face 12 of the cylinder head 2 either, as shown on the left in FIG. 1, by means of a screw 13 screwed into the cylinder head 2 or, as shown in FIG. 1 on the right, by means of a likewise on the front side 12 of the cylinder head 2 attached clamping claw 14 attached.
- the latter is characterized by an easier mountability, as can be dispensed with a hole in the hold-11.
- hold-down 11 is chosen so that by the fixing of the side parts 16 on the end face 12 of the cylinder head 2, a spring action is created, which presses the fuel injector 1 via the shoulder 7 in the receiving bore 9 in the cylinder head 2.
- the axial stability of the fuel injection valve 1 is achieved on the one hand by the leadership of the fuel line 4, on the other hand by the partial enclosure of the hold-11 in the region of the downstream end 6 of the fuel injection valve 1.
- FIGS. 2A and 2B illustrate a schematic plan view of two variants of the fastening device 10 of the fuel injection valve 1 according to the invention. Identical components are provided in all figures with corresponding reference numerals.
- Fig. 2A illustrates a symmetrical pair of hold-downs 11, which serve to secure a single fuel injector 1, while Fig. 2B of a possible series arrangement of several fuel injectors 1 account, by each adjacent hold-down 11 are made in one piece for ease of attachment and further stabilization ,
- FIG. 3 shows a schematic plan view of a second exemplary embodiment of a fastening device 10 designed according to the invention for a fuel injection valve 1.
- the second exemplary embodiment described in FIG. 3 is formed in one piece or in cup shape.
- a hold-down pot 17 in turn has two side parts 16 with holes 15 for fastening the hold-down pot 17 on the end face 12 of the cylinder head 2.
- a recess 18 serves to carry out the electrical line, not shown, for actuating the fuel injection valve 1.
- Such a hold-down pot 17 can be produced, for example, by deep-drawing.
- At least one slit 19, in the present embodiment of which two are arranged symmetrically at a downstream end 22 of the hold-down pot 17 is provided.
- Fig. 5 shows a schematic view of the attachment process of a fuel injection valve 1 in the fastening device 10 shown in FIGS. 3 and 4.
- the fuel injection valve 1 If the fuel injection valve 1 is pressed further against the spring force of the tabs 21 in the hold-down pot 17, they grab the inlet side of the paragraph 7 back to their original shape and are applied to the fuel injector 1. At the same time can be achieved by a brief tightening of the assembled fuel injector 1, that the tabs 21 are supported on the shoulder 7 and fix the fuel injector 1 after mounting fuel injector 1 and hold-down pot 17 in the receiving bore 9 of the cylinder head 2. If the fuel injection valve 1 to be dismantled, it is pulled out of the hold-down pot 17, which is facilitated by a spherical shape of the paragraph 7.
- the attachment of the hold-down pot 17 can be done as in the first embodiment by means of screws 13 which are guided through the holes 15, or by means of clamping claws 14.
- the invention is not limited to the illustrated embodiment and, for example, for fuel injection valves 1 for injection into the combustion chamber of a self-igniting internal combustion engine applicable.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Description
Die Erfindung geht aus von einem Brennstoffeinspritzventil mit einer Befestigungsvorrichtung zur Befestigung des Brennstoffeinspritzventils nach der Gattung des Hauptanspruchs.The invention relates to a fuel injection valve with a fastening device for fastening the fuel injection valve according to the preamble of the main claim.
Es ist bereits aus der DE 29 26 490 C2 eine Befestigungsvorrichtung für ein Brennstoffeinspritzventil zur Befestigung an einem Saugrohr bekannt, bei welcher die axiale Fixierung des Brennstoffeinspritzventils an der Brennstoffverteilerleitung bzw. an einem Stecknippel durch ein Befestigungselement erfolgt, das als U-förmige Sicherungsklammer gestaltet ist, die mit zwei in radialer Richtung federnden Schenkeln versehen ist. Die Sicherungsklammer greift dabei im montierten Zustand durch entsprechende Aussparungen des Stecknippels und ist in eine als Ringnut ausgebildete Ausnehmung in einem Anschlußstutzen des Brennstoffeinspritzventils einrastbar. Das axiale Spiel zwischen den Aussparungen und der Sicherungsklammer sowie zwischen der Ringnut und der Sicherungsklammer soll dabei klein gehalten werden, um eine exakte Fixierung des Brennstoffeinspritzventils ohne Verspannungen der Dichtung zu erreichen.It is already known from DE 29 26 490 C2 discloses a fastening device for a fuel injection valve for attachment to a suction pipe, in which the axial fixation of the fuel injection valve to the fuel rail or to a plug-in nipple by a fastener, which is designed as a U-shaped securing clip which is provided with two radially resilient legs. The securing clip engages in the assembled state by corresponding recesses of the plug-in nipple and can be latched in a recess formed as an annular groove in a connecting piece of the fuel injection valve. The axial clearance between the recesses and the securing clip as well as between the annular groove and the securing clip should be kept small in order to achieve an exact fixation of the fuel injection valve without tension of the seal.
Nachteilig an der aus der DE 29 26 490 C2 bekannten Befestigungsvorrichtung ist insbesondere die verspannende Wirkung der verschiedenen Halterungsteile auf das Brennstoffeinspritzventil. Der im Brennstoffeinspritzventil erzeugte Kraftfluß führt zu Verformungen und somit zu Hubänderungen der Ventilnadel bis zum Verklemmen sowie zu einer Druck- oder Biegebelastung der Gehäuseteile, die im allgemeinen dünnwandig und an mehreren Stellen miteinander verschweißt sind. Zudem führt jede Befestigungsmaßnahme beispielsweise durch einen Auflagebund zu einer Vergrößerung der radialen Ausdehnung des Brennstoffeinspritzventils und damit zu einem erhöhten Platzbedarf beim Einbau.A disadvantage of the fastening device known from DE 29 26 490 C2 is in particular the bracing effect of the various mounting parts on the fuel injection valve. The power flow generated in the fuel injection valve leads to deformations and thus changes in the stroke of the valve needle to jamming and to a pressure or bending load of the housing parts, which are generally thin-walled and welded together at several points. In addition, each fastening measure leads, for example by a support collar to increase the radial extent of the fuel injection valve and thus to an increased space requirement during installation.
Aus der WO 99/00595 A ist bereits eine Befestigungsvorrichtung zur Befestigung eines Brennstoffeinspritzventils in einem Zylinderkopf einer Brennkraftmaschine bekannt, die zumindest einen Niederhalter, der an einer Stirnseite des Zylinderkopfes befestigt ist und das Brennstoffeinspritzventil in einer Aufnahmebohrung des Zylinderkopfes fixiert, umfasst. Der in Form einer Spannpratze ausgebildete Niederhalter stützt sich mit einem Auflageabschnitt auf einem an einem abströmseitigen Ende des Brennstoffeinspritzventils ausgebildeten Flansch ab, wobei das Brennstoffeinspritzventil durch eine gabelartige Ausbildung des Niederhalters zumindest teilweise umfasst ist. Der Niederhalter ist dabei so geformt, dass er in montiertem Zustand in gewisser Weise vorgespannt ist. Der ringförmig über die Außenkontur des Brennstoffeinspritzventils überstehende Flansch ist plan mit einer ebenen Auflagefläche ausgeführt, an die der Auflageabschnitt des Niederhalters angreift.From WO 99/00595 A, a fastening device for fastening a fuel injection valve in a cylinder head of an internal combustion engine is already known, which comprises at least one hold-down, which is fixed to an end face of the cylinder head and the fuel injection valve fixed in a receiving bore of the cylinder head. The hold-down device designed in the form of a clamping claw is supported by a bearing section on a flange formed on a downstream end of the fuel injection valve, wherein the fuel injection valve is at least partially enclosed by a fork-like configuration of the hold-down device. The hold-down is shaped so that it is biased in the assembled state in some way. The annular projecting beyond the outer contour of the fuel injection valve flange is flat with a flat support surface, which engages the support portion of the blank holder.
Das erfindungsgemäße Brennstoffeinspritzventil mit einer Befestigungsvorrichtung für das Brennstoffeinspritzventil mit den kennzeichnenden Merkmalen des Hauptanspruchs hat demgegenüber den Vorteil, daß das Brennstoffeinspritzventil an einem abspritzseitigen Ende einen daran befestigten Bund oder Absatz aufweist, an welchem ein biegsamer Niederhalter angreift, welcher das Ende des Brennstoffeinspritzventils ganz oder teilweise umfaßt, wodurch das Brennstoffeinspritzventil im Zylinderkopf niedergehalten wird. Dadurch wirken Axial- oder Biegekräfte nur am abströmseitigen Ende auf das Ventilgehäuse. Der Absatz ist dabei in vorteilhafter Weise im Übergang zu einer Kugeligen Form am abströmseitigen Ende des Brennstoffeinspritzventils vorgesehen.The fuel injection valve according to the invention with a fastening device for the fuel injection valve having the characterizing features of the main claim has the advantage that the fuel injection valve at a discharge end has a collar or paragraph attached thereto, on which a flexible hold-down engages which the end of the fuel injection valve in whole or in part includes, whereby the fuel injection valve is held down in the cylinder head. As a result, axial or bending forces act on the valve housing only at the downstream end. The paragraph is provided in an advantageous manner in the transition to a spherical shape at the downstream end of the fuel injection valve.
Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen des im Hauptanspruch angegebenen Brennstoffeinspritzventils mit einer Befestigungsvorrichtung möglich.The measures listed in the dependent claims advantageous refinements and improvements of the main claim fuel injection valve with a fastening device are possible.
Von Vorteil ist insbesondere, daß die Niederhalter einfach durch Stanzen aus Blech herstellbar und sowohl für einzelne Brennstoffeinspritzventile als auch für Reihenanordnungen von Brennstoffeinspritzventilen geeignet sind.It is of particular advantage that the hold-downs can be produced simply by stamping from sheet metal and are suitable both for individual fuel injection valves and for row arrangements of fuel injection valves.
Vorteilhafterweise sind die Niederhalter durch Schrauben oder Spannpratzen in einfacher Weise an der Stirnseite des Zylinderkopfes fixiert.Advantageously, the hold-downs are fixed by screws or clamps in a simple manner on the front side of the cylinder head.
Von Vorteil ist weiterhin, daß der Niederhalter in Form eines Niederhaltetopfes ausgeformt ist, der dem Brennstoffeinspritzventil in der Aufnahmebohrung des Zylinderkopfes eine größere Stabilität verleiht.A further advantage is that the hold-down is formed in the form of a hold-down pot, which gives the fuel injection valve in the receiving bore of the cylinder head greater stability.
Ebenfalls von Vorteil ist dabei die Ausbildung von Schlitzungen und elastischen Laschen am Ende des Niederhaltetopfes, die eine schnelle und einfache Montage und Demontage des Brennstoffeinspritzventils erlauben.Another advantage is the formation of slits and elastic tabs at the end of the hold-down pot, which allow a quick and easy assembly and disassembly of the fuel injector.
Durch Stufen im Niederhaltetopf ist die Befestigungsvorrichtung in nahezu jede Aufnahmebohrung eines Zylinderkopfes einbaubar und kann dadurch auch als Adapter bei zu großen Bohrungsquerschnitten verwendet werden.Through steps in the hold-down pot, the fastening device can be installed in almost any receiving bore of a cylinder head and can thus also be used as an adapter for large bore cross-sections.
Ausführungsbeispiele der Erfindung sind in der Zeichnung vereinfacht dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen:
- Fig. 1
- eine schematische Ansicht eines ersten Ausführungsbeispiels einer erfindungsgemäß ausgestalteten Befestigungsvorrichtung für ein Brennstoffeinspritzventil,
- Fig. 2A-B
- jeweils eine schematische Aufsicht auf die erfindungsgemäß ausgestaltete Befestigungsvorrichtung,
- Fig. 3
- eine schematische Aufsicht auf ein zweites Ausführungsbeispiel einer erfindungsgemäßen Befestigungsvorrichtung,
- Fig. 4
- eine schematische Schnittansicht der in Fig. 3 dargestellten Befestigungsvorrichtung, und
- Fig. 5
- eine schematische Ansicht des Befestigungsvorgangs eines Brennstoffeinspritzventils mit der in Fig. 3 und Fig. 4 dargestellten Befestigungsvorrichtung.
- Fig. 1
- FIG. 2 a schematic view of a first exemplary embodiment of a fastening device according to the invention for a fuel injection valve, FIG.
- Fig. 2A-B
- in each case a schematic plan view of the inventively designed fastening device,
- Fig. 3
- a schematic plan view of a second embodiment of a fastening device according to the invention,
- Fig. 4
- a schematic sectional view of the fastening device shown in Fig. 3, and
- Fig. 5
- a schematic view of the attachment process of a fuel injection valve with the fastening device shown in Fig. 3 and Fig. 4.
Fig. 1 zeigt einen stark schematisierten Teilschnitt durch ein erstes Ausführungsbeispiel einer erfindungsgemäß ausgestalteten Befestigungsvorrichtung für ein Brennstoffeinspritzventil.Fig. 1 shows a highly schematic partial section through a first embodiment of an inventively designed fastening device for a fuel injection valve.
Ein Brennstoffeinspritzventil 1 ist dabei in Form eines direkt einspritzenden Brennstoffeinspritzventils 1 ausgeführt, das zum direkten Einspritzen von Brennstoff in einen Brennraum einer nicht weiter dargestellten, insbesondere gemischverdichtenden, fremdgezündeten Brennkraftmaschine in einen Zylinderkopf 2 eingebaut ist. Das Brennstoffeinspritzventil 1 weist an einem zulaufseitigen Ende 3 eine Verbindung zu einer Brennstoffzuleitung 4 auf. Das Brennstoffeinspritzventil 1 verfügt über einen Anschluß 5 für die elektrische Kontaktierung zur Betätigung des Brennstoffeinspritzventils 1.A fuel injection valve 1 is designed in the form of a directly injecting fuel injection valve 1, which is installed in a
An einem abströmseitigen Ende 6 des Brennstoffeinspritzventils 1 ist ein Absatz 7 ausgebildet, der an einer Wandung 8 einer Aufnahmebohrung 9 des Zylinderkopfes 2 anliegt. Der Absatz 7 kann dabei beispielsweise durch Drehen hergestellt werden, oder es kann mittels Schweißen eine kugelige Form am abströmseitigen Ende 6 des Brennstoffeinspritzventils 1 befestigt werden, wodurch zudem noch eine gute Führung in der Aufnahmebohrung 9 erzielt wird.At a
Um das Brennstoffeinspritzventil 1 in der Aufnahmebohrung 9 des Zylinderkopfes 2 zu fixieren, ist erfindungsgemäß eine Befestigungsvorrichtung 10 vorgesehen. Die Befestigungsvorrichtung 10 besteht aus einem Niederhalter 11, welcher im vorliegenden ersten Ausführungsbeispiel zweiteilig ausgebildet ist und am abströmseitigen Ende 6 des Brennstoffeinspritzventils 1 anliegt. Vorzugsweise sind die Niederhalter 11 aus Blech beispielsweise gestanzt. Die Niederhalter 11 stützen sich an dem am abströmseitigen Ende 6 des Brennstoffeinspritzventils 1 ausgebildeten Absatz 7 ab. Die Niederhalter 11 sind mit Seitenteilen 16 an einer Stirnseite 12 des Zylinderkopfes 2 entweder, wie in Fig. 1 links dargestellt, mittels einer in den Zylinderkopf 2 einschraubten Schraube 13, oder, wie in Fig. 1 rechts dargestellt, mittels einer ebenfalls an der Stirnseite 12 des Zylinderkopfes 2 angebrachten Spannpratze 14 befestigt. Letztere zeichnet sich durch eine leichtere Montierbarkeit aus, da auf eine Bohrung im Niederhalter 11 verzichtet werden kann.In order to fix the fuel injection valve 1 in the
Die bevorzugte Form der Niederhalter 11 ist dabei so gewählt, daß durch die Fixierung der Seitenteile 16 an der Stirnseite 12 des Zylinderkopfes 2 eine Federwirkung entsteht, die das Brennstoffeinspritzventil 1 über den Absatz 7 in die Aufnahmebohrung 9 im Zylinderkopf 2 drückt. Die axiale Stabilität des Brennstoffeinspritzventils 1 wird dabei einerseits durch die Führung der Brennstoffleitung 4, andererseits durch die teilweise Umfassung der Niederhalter 11 im Bereich des abströmseitigen Endes 6 des Brennstoffeinspritzventils 1 erreicht.The preferred form of hold-down 11 is chosen so that by the fixing of the
Fig. 2A und 2B stellen eine schematische Aufsicht auf zwei Varianten der erfindungsgemäßen Befestigungsvorrichtung 10 des Brennstoffeinspritzventils 1 dar. Gleiche Bauteile sind dabei in allen Figuren mit übereinstimmenden Bezugszeichen versehen.2A and 2B illustrate a schematic plan view of two variants of the
Blickt man in Strömungsrichtung des Brennstoffs auf die Befestigungsvorrichtung 10, erkennt man die über die Stirnseite 12 des Zylinderkopfes 2 herausragenden Seitenteile 16 der Niederhalter 11. Sie sind in Fig. 2A und 2B beispielhaft mit Bohrungen 15 zur Befestigung am Zylinderkopf 2 versehen.If one looks in the direction of flow of the fuel on the
Fig. 2A stellt dabei ein symmetrisches Paar von Niederhaltern 11 dar, die zur Befestigung eines einzelnen Brennstoffeinspritzventils 1 dienen, während Fig. 2B einer möglichen Reihenanordnung mehrerer Brennstoffeinspritzventile 1 Rechnung trägt, indem zur einfacheren Befestigung und zur weiteren Stabilisierung jeweils benachbarte Niederhalter 11 einstückig ausgeführt sind.Fig. 2A illustrates a symmetrical pair of hold-downs 11, which serve to secure a single fuel injector 1, while Fig. 2B of a possible series arrangement of several fuel injectors 1 account, by each adjacent hold-down 11 are made in one piece for ease of attachment and further stabilization ,
Fig. 3 zeigt eine schematische Aufsicht auf ein zweites Ausführungsbeispiel einer erfindungsgemäß ausgestalteten Befestigungsvorrichtung 10 für ein Brennstoffeinspritzventil 1.3 shows a schematic plan view of a second exemplary embodiment of a
Im Gegensatz zu dem in Fig. 1 beschriebenen Ausführungsbeispiel der Befestigungsvorrichtung 10 ist das in Fig. 3 beschriebene zweite Ausführungsbeispiel einstückig bzw. in Topfform ausgebildet. Ein Niederhaltetopf 17 weist wiederum zwei Seitenteile 16 mit Bohrungen 15 zur Befestigung des Niederhaltetopfes 17 an der Stirnseite 12 des Zylinderkopfes 2 auf. Eine Ausnehmung 18 dient der Durchführung der nicht dargestellten elektrischen Leitung zur Betätigung des Brennstoffeinspritzventils 1. Ein solcher Niederhaltetopf 17 kann beispielsweise durch Tiefziehen hergestellt werden.In contrast to the exemplary embodiment of the
Um das Brennstoffeinspritzventil 1 mit dem an seinem abströmseitigen Ende 6 ausgebildeten Absatz 7 in den Niederhaltetopf 17 einführen zu können, ist zumindest eine Schlitzung 19, im vorliegenden Ausführungsbeispiel derer zwei, die symmetrisch an einem abströmseitigen Ende 22 des Niederhaltetopfes 17 angeordnet sind, vorgesehen. Zur Anpassung an die äußere Form des Brennstoffeinspritzventils 1 bzw. der Aufnahmebohrung 9 des Zylinderkopfes 2 weist der Niederhaltetopf 17, wie in Fig. 4 verdeutlicht, mehrere Stufen 20 auf.In order to introduce the fuel injection valve 1 with the formed at its
Fig. 5 stellt eine schematische Ansicht des Befestigungsvorgangs eines Brennstoffeinspritzventils 1 in der in Fig. 3 und 4 dargestellten Befestigungsvorrichtung 10 dar.Fig. 5 shows a schematic view of the attachment process of a fuel injection valve 1 in the
Wie bereits weiter oben erwähnt, muß bei einer topfförmigen Ausbildung der Befestigungsvorrichtung 10 zumindest eine Schlitzung 19 vorhanden sein, um das durch den Absatz 7 verdickte Ende 6 des Brennstoffeinspritzventils 1 in den Niederhaltetopf 17 einrasten zu können. Der Vorgang, mittels dessen das Brennstoffeinspritzventil 1 in den Niederhaltetopf 17 eingefügt wird, ist in Fig. 5 stark schematisiert dargestellt.As already mentioned above, in a cup-shaped design of the
Beim Einschieben des Brennstoffeinspritzventils 1 weichen zunächst der Schlitzung 19 benachbarte Laschen 21 des Niederhaltetopfes 17 durch den Druck auf den Absatz 7 am abströmseitigen Ende 6 des Brennstoffeinspritzventils 1 zurück. Dies ist aus dem linken Teil von Fig. 5 ersichtlich.When inserting the fuel injection valve 1 first of the
Wird das Brennstoffeinspritzventil 1 weiter gegen die Federkraft der Laschen 21 in den Niederhaltetopf 17 gedrückt, schnappen diese zulaufseitig des Absatzes 7 in ihre ursprüngliche Form zurück und liegen am Brennstoffeinspritzventil 1 an. Gleichzeitig kann durch ein kurzzeitiges Anziehen des montierten Brennstoffeinspritzventils 1 erreicht werden, daß sich die Laschen 21 an dem Absatz 7 abstützen und nach der Montage von Brennstoffeinspritzventil 1 und Niederhaltetopf 17 in der Aufnahmebohrung 9 des Zylinderkopfes 2 das Brennstoffeinspritzventil 1 fixieren. Soll das Brennstoffeinspritzventil 1 demontiert werden, wird es aus dem Niederhaltetopf 17 herausgezogen, was durch eine kugelige Form des Absatzes 7 erleichtert wird.If the fuel injection valve 1 is pressed further against the spring force of the
Die Befestigung des Niederhaltetopfes 17 kann wie im ersten Ausführungsbeispiel mittels Schrauben 13, die durch die Bohrungen 15 geführt werden, oder mittels Spannpratzen 14 erfolgen.The attachment of the hold-down
Die Erfindung ist nicht auf das dargestellte Ausführungsbeispiel beschränkt und beispielsweise auch für Brennstoffeinspritzventile 1 zur Einspritzung in den Brennraum einer selbstzündenden Brennkraftmaschine anwendbar.The invention is not limited to the illustrated embodiment and, for example, for fuel injection valves 1 for injection into the combustion chamber of a self-igniting internal combustion engine applicable.
Claims (9)
- Fuel injection valve with a fastening device for fastening the fuel injection valve (1) in a cylinder head (2) of an internal combustion engine, with at least one holding-down device (11) which is fastened to one end face (12) of the cylinder head (2) and fixes the fuel injection valve (1) in a reception bore (9) of the cylinder head (2), the at least one holding-down device (11) being supported on a step (7), which is formed at an outflow-side end (6) of the fuel injection valve (1), and at least partially surrounding the fuel injection valve (1), the holding-down device (11) being shaped such that it is prestressed in the mounted state, characterized in that the step (7) on the fuel injection valve (1) is provided at the transition to a conical shape at the outflow-side end (6).
- Fuel injection valve with a fastening device according to Claim 1, characterized in that the at least one holding-down device (11) has a side part (16) which projects beyond the end face (12) of the cylinder head (2).
- Fuel injection valve with a fastening device according to Claim 2, characterized in that the side part (16) of the at least one holding-down device (11) is fastened to the end face (12) of the cylinder head (2) by means of at least one screw (13) which engages through at least one bore (15) in the side part (16).
- Fuel injection valve with a fastening device according to Claim 2, characterized in that the side part (16) of the at least one holding-down device (11) is fastened to the end face (12) of the cylinder head (2) by means of at least one tension claw (14) which presses the side part (16) onto the end face (12) of the cylinder head (2).
- Fuel injection valve with a fastening device according to one of Claims 1 to 4, characterized in that in each case two adjacent holding-down devices (11) for the fastening of fuel injection valves (1) arranged in series are produced in one piece.
- Fuel injection valve with a fastening device according to Claim 1, characterized in that the holding-down device (11) is designed in the shape of a holding-down pot (17) which is produced in one piece.
- Fuel injection valve with a fastening device according to Claim 6, characterized in that the holding-down pot (17) has at least one slot (19) at an outflow-side end (22).
- Fuel injection valve with a fastening device according to Claim 7, characterized in that the holding-down pot (17) has at least one elastically deformable tab (21) at its outflow-side end (22).
- Fuel injection valve with a fastening device according to one of Claims 6 to 8, characterized in that the side parts (16) of the holding-down pot (17) are fixed to the end face (12) of the cylinder head (2) in each case by means of at least one screw (13) which projects through a bore (15) or in each case by means of at least one tension claw (14).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06117773A EP1722099B1 (en) | 2001-02-28 | 2002-02-27 | Fastening device |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10109408 | 2001-02-28 | ||
DE10109408A DE10109408A1 (en) | 2001-02-28 | 2001-02-28 | fastening device |
PCT/DE2002/000696 WO2002068815A1 (en) | 2001-02-28 | 2002-02-27 | Fastening device |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06117773A Division EP1722099B1 (en) | 2001-02-28 | 2002-02-27 | Fastening device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1366285A1 EP1366285A1 (en) | 2003-12-03 |
EP1366285B1 true EP1366285B1 (en) | 2006-11-02 |
Family
ID=7675651
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02719641A Expired - Lifetime EP1366285B1 (en) | 2001-02-28 | 2002-02-27 | Fastening device |
EP06117773A Expired - Lifetime EP1722099B1 (en) | 2001-02-28 | 2002-02-27 | Fastening device |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06117773A Expired - Lifetime EP1722099B1 (en) | 2001-02-28 | 2002-02-27 | Fastening device |
Country Status (7)
Country | Link |
---|---|
US (1) | US6772736B2 (en) |
EP (2) | EP1366285B1 (en) |
JP (1) | JP2004518863A (en) |
CN (1) | CN1457393A (en) |
CZ (1) | CZ20023489A3 (en) |
DE (3) | DE10109408A1 (en) |
WO (1) | WO2002068815A1 (en) |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10140797A1 (en) * | 2001-08-20 | 2003-07-31 | Bosch Gmbh Robert | Compensation element for a fuel injector |
JP3997946B2 (en) * | 2002-07-26 | 2007-10-24 | 株式会社デンソー | Fuel supply device |
DE10256668A1 (en) | 2002-12-04 | 2004-07-29 | Robert Bosch Gmbh | support element |
DE10338715B4 (en) * | 2003-08-22 | 2014-07-17 | Robert Bosch Gmbh | Compensation element for a fuel injection valve |
DE102004055317A1 (en) | 2004-11-16 | 2006-05-24 | Bosch Rexroth Aktiengesellschaft | Electric induction machine and primary section |
DE502006006106D1 (en) * | 2005-03-03 | 2010-03-25 | Bosch Gmbh Robert | FUEL INJECTION EQUIPMENT |
US7469680B2 (en) * | 2005-09-30 | 2008-12-30 | Caterpillar Inc. | Fluid system having quill-mounted manifold |
DE102006019306A1 (en) * | 2006-04-26 | 2007-10-31 | Robert Bosch Gmbh | Fastener for fuel injector of e.g. common rail injection system, has bearing surface formed at inner edge of fastener that is implemented as locking bracket, where latch overlapping injector body is implemented in inner edge of bracket |
DE102006056704A1 (en) * | 2006-11-30 | 2008-06-05 | Robert Bosch Gmbh | Fuel injector and fuel injection system |
EP1967728B1 (en) * | 2007-03-08 | 2009-10-14 | Continental Automotive GmbH | Coupling device and fuel supply arrangement |
EP1998038B1 (en) | 2007-05-31 | 2010-07-14 | Continental Automotive GmbH | Fixing device for fixing a fuel injector in a cylinder head of a combustion engine |
DE102007035714A1 (en) * | 2007-07-30 | 2009-02-05 | Robert Bosch Gmbh | Fuel injection system with compensation element |
JP4937891B2 (en) * | 2007-11-30 | 2012-05-23 | 愛三工業株式会社 | Fuel supply device |
JP5408010B2 (en) * | 2010-04-08 | 2014-02-05 | 株式会社デンソー | High pressure pump |
US20110265767A1 (en) * | 2010-05-03 | 2011-11-03 | Delphi Technologies, Inc. | Isolater for fuel injector |
DE112011103126T5 (en) * | 2010-10-20 | 2013-09-12 | Illinois Tool Works Inc. | Fuel injector mounting arrangement |
US9109563B2 (en) * | 2011-03-31 | 2015-08-18 | Denso International America, Inc. | Cradled fuel injector mount assembly |
DE102011084064A1 (en) * | 2011-10-06 | 2013-04-11 | Schaeffler Technologies AG & Co. KG | Downholder for a fuel injector |
US8424509B1 (en) * | 2011-10-28 | 2013-04-23 | Continental Automotive Systems Us, Inc. | Fuel injector cup rotation limiting structure for an isolated fuel rail system |
CN103527375B (en) * | 2013-09-22 | 2016-03-09 | 安徽中鼎动力有限公司 | A kind of oil sprayer pressing sleeve device of two-cycle engine |
JP6256918B2 (en) * | 2014-09-30 | 2018-01-10 | 本田技研工業株式会社 | Injector assembly |
DE102015001614A1 (en) * | 2015-02-07 | 2016-08-11 | Neander Motors Ag | Device for fixing at least one fuel injection nozzle |
DE102016225695A1 (en) * | 2016-12-21 | 2018-06-21 | Robert Bosch Gmbh | Arrangement with at least one valve and a holder |
CN111433450B (en) * | 2017-12-08 | 2022-01-28 | 沃尔沃卡车集团 | Device for a common rail fuel injection system |
FR3112575A1 (en) * | 2020-07-17 | 2022-01-21 | Renault S.A.S | Gas fuel injection rail. |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4133321A (en) * | 1972-12-21 | 1979-01-09 | Robert Bosch Gmbh | Clamping device for fuel injection nozzles |
US4066213A (en) * | 1976-04-16 | 1978-01-03 | Deere & Company | Fuel injection nozzle assembly |
DE2926490A1 (en) | 1979-06-30 | 1981-02-05 | Bosch Gmbh Robert | FUEL INJECTION SYSTEM |
IN159427B (en) * | 1982-11-27 | 1987-05-16 | Perkins Engines Group | |
DE3406487A1 (en) * | 1984-02-23 | 1985-08-29 | Bayerische Motoren Werke AG, 8000 München | INJECTION VALVE FOR MIX-COMPRESSIVE COMBUSTION ENGINES, ESPECIALLY FOR SINGLE SUCTION PIPE INJECTION |
US5121731A (en) * | 1991-06-20 | 1992-06-16 | Siemens Automotive L.P. | Means for mounting a fuel injector on a fuel rail |
US5706786A (en) * | 1994-12-28 | 1998-01-13 | Cummins Engine Company, Inc. | Distortion reducing load ring for a fuel injector |
JPH08312503A (en) * | 1995-03-10 | 1996-11-26 | Mitsubishi Motors Corp | Installation structure of fixed object, especially, of injector for cylinder injection type internal combustion engine |
DE19511703A1 (en) * | 1995-03-30 | 1996-10-02 | Bayerische Motoren Werke Ag | Device for fastening an injection nozzle, in particular to the cylinder head of an internal combustion engine |
WO1997030282A1 (en) * | 1996-02-12 | 1997-08-21 | Filterwerk Mann + Hummel Gmbh | Intake system |
JP3765132B2 (en) * | 1996-09-06 | 2006-04-12 | 日産自動車株式会社 | Fuel injection nozzle fixing device in direct injection diesel engine |
FR2763649B1 (en) * | 1997-05-20 | 1999-06-25 | Peugeot | DEVICE FOR FIXING A FUEL INJECTOR ON A CYLINDER HEAD OF AN INTERNAL COMBUSTION ENGINE, AND A METHOD FOR MOUNTING THIS INJECTOR |
DE19735665A1 (en) * | 1997-06-25 | 1999-01-07 | Bosch Gmbh Robert | Fuel injection system |
JP2000145580A (en) | 1998-11-11 | 2000-05-26 | Isuzu Motors Ltd | Fixing structure of injector |
DE19857485A1 (en) * | 1998-12-14 | 2000-06-15 | Bosch Gmbh Robert | Assembly device for assembling and disassembling a fuel injector |
JP3871016B2 (en) * | 2000-05-22 | 2007-01-24 | スズキ株式会社 | Fuel injector mounting structure for in-cylinder injection engine |
-
2001
- 2001-02-28 DE DE10109408A patent/DE10109408A1/en not_active Withdrawn
-
2002
- 2002-02-27 US US10/275,053 patent/US6772736B2/en not_active Expired - Fee Related
- 2002-02-27 DE DE50208596T patent/DE50208596D1/en not_active Expired - Lifetime
- 2002-02-27 CZ CZ20023489A patent/CZ20023489A3/en unknown
- 2002-02-27 EP EP02719641A patent/EP1366285B1/en not_active Expired - Lifetime
- 2002-02-27 WO PCT/DE2002/000696 patent/WO2002068815A1/en active IP Right Grant
- 2002-02-27 DE DE50213305T patent/DE50213305D1/en not_active Expired - Lifetime
- 2002-02-27 JP JP2002567695A patent/JP2004518863A/en not_active Withdrawn
- 2002-02-27 EP EP06117773A patent/EP1722099B1/en not_active Expired - Lifetime
- 2002-02-27 CN CN02800451.5A patent/CN1457393A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
WO2002068815A1 (en) | 2002-09-06 |
US20030154961A1 (en) | 2003-08-21 |
DE50213305D1 (en) | 2009-04-02 |
EP1722099B1 (en) | 2009-02-18 |
EP1722099A3 (en) | 2006-11-29 |
CN1457393A (en) | 2003-11-19 |
JP2004518863A (en) | 2004-06-24 |
CZ20023489A3 (en) | 2004-05-12 |
EP1722099A2 (en) | 2006-11-15 |
DE10109408A1 (en) | 2002-09-05 |
EP1366285A1 (en) | 2003-12-03 |
DE50208596D1 (en) | 2006-12-14 |
US6772736B2 (en) | 2004-08-10 |
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