EP3054149B1 - Device for fixing at least one fuel injection nozzle - Google Patents
Device for fixing at least one fuel injection nozzle Download PDFInfo
- Publication number
- EP3054149B1 EP3054149B1 EP16000187.1A EP16000187A EP3054149B1 EP 3054149 B1 EP3054149 B1 EP 3054149B1 EP 16000187 A EP16000187 A EP 16000187A EP 3054149 B1 EP3054149 B1 EP 3054149B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel injection
- injection nozzle
- retaining
- fastening
- cylinder head
- 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.)
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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
- 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
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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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/85—Mounting of fuel injection apparatus
- F02M2200/855—Mounting of fuel injection apparatus using clamp elements or fastening means, e.g. bolts or screws
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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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/85—Mounting of fuel injection apparatus
- F02M2200/856—Mounting of fuel injection apparatus characterised by mounting injector to fuel or common rail, or vice versa
Definitions
- the invention relates to a device for fixing at least one fuel injection nozzle for an internal combustion engine according to the preamble of patent claim 1.
- JPH03182680 A with which a fuel injection nozzle of an internal combustion engine is arranged in a bore of a cylinder head.
- the device has a holding device which is designed in the manner of a two-armed lever and engages on the one hand with a first arm on a collar-like stop of the fuel injection nozzle and on the other hand with a second arm on a screw head of a cylinder head screw. Between the two arms extends a fastening screw which is screwed into a thread in the cylinder head and spans the fuel injector with the interposition of a seal against a stop in the bore of the cylinder head.
- a nozzle tip of the fuel injection valve penetrates a passage opening in the cylinder head and is thereby connected to a combustion chamber of the internal combustion engine.
- From the DE 195 54 065 A1 shows an assembly for mounting an injection nozzle in a holder, which is provided with a receiving opening for the injection nozzle.
- a clamping element is attached at the injection nozzle.
- the clamping element is connected to the holder in such a way that the injection nozzle rests against a stop in the receiving opening frictionally.
- a sealing washer is installed between the injection nozzle and stop.
- a nozzle tip of the injector penetrates a through hole in the holder, so that fuel can be introduced into a downstream combustion chamber.
- the DE 26 49 357 indicates a connection of a fuel injection nozzle with a cylinder head of an internal combustion engine again.
- the fuel injector rests with a guide shaft in a bore of the cylinder head. Outside the bore, a pressure piece acts on the fuel injection nozzle, so that said by means of a fastening screw Fuel injector is clamped in the axial direction against a stop in the bore. Central longitudinal axes of the fastening screws and the fuel injection nozzle run at a defined distance from one another.
- the device with the holding device holds the fuel injection nozzle in exemplary fashion on the housing section of the internal combustion engine.
- both the fuel injector with the holding device as well as the holding device with the housing portion in a simple way connect - easy is also the disassembly.
- the realizable with expert skills holding device is mentioned in this context.
- the structural design of the holding device with mounting flange, casing pot and mounting flange sets standards in the field of fixing fuel injectors.
- At least the enveloping pot is formed by a rotationally symmetrical body to which the mounting flange and serving for axial and radial locking bushing are connected problem-free, serving to secure the fuel injector in the retaining sleeve commercially available feather keys.
- a determination of the holding device according to the invention is when the fastening screws are arranged gleichichtex distributed on a circumferential center line of its mounting flange. An excellent connection of the holding device via the mounting flange and the fastening screws is achieved in that said holding device is fastened to the housing section which represents a valve cover of the internal combustion engine. An excellent interaction of the holding device with the fuel injector results when the existing example of resilient steel Covering pot in the axial direction has defined resilient properties.
- the shroud is carried out according to the invention from the mounting flange in the direction of retaining sleeve in the manner of a converging conical shell.
- the jacket of Hommelopfs is adjacent to the mounting flange in the direction of retaining sleeve provided with a first only over a partial length of the shell conical shell portion, extending from one end of the partial length of the shell to the retaining sleeve, a second shell portion.
- a high-level further design of the holding device is achieved in that it is well suited for receiving two fuel injectors and has a first and a second Hüllopf with a first and a second retaining sleeve.
- the first and the second enveloping pot are combined to form a structural unit produced substantially from one piece, which rests with a surrounding supporting flange on a corresponding receiving plane on the housing section that represents a valve cover.
- this embodiment is complemented by the fact that adjacent to the receiving plane of the valve cover a cross-sectionally U-shaped groove is provided for receiving a sealing body, which is effective between the channel and the unit.
- this holding device is specifically optimized by a single fastening screw is arranged in a central longitudinal plane between the first and the second Hüllopf, which is in operative connection with a thread of the cylinder head and the assembly holds the valve cover functionally in position.
- a cylinder head 2 is shown, the two cam valves not shown, valves 3, 4 receives and is bolted to a valve cover 5.
- the internal combustion engine 1 is designed as an outboard motor for driving a ship's propeller and installed in a boat.
- This internal combustion engine has two parallel crankshafts which are aligned upright to a waterline of the boat. Both crankshafts are actuated by two reciprocating pistons which are reciprocated in horizontal bores of cylinders of a cylinder crankcase. Each reciprocating piston acts on said crankshafts with two connecting rods.
- the internal combustion engine 1 operates in the diesel process, with direct injection; Type Common Rail. From the DE 10 2012 015 907 B3 The latter specific features of the internal combustion engine 1 with two parallel crankshafts with description and drawings represent plausible.
- the direct injection comprises for the cylinder fuel injectors 8, 9, to whose fixing to the valve cover 5 of the internal combustion engine 1, a device 10 is provided, Fig. 2 ,
- Each fuel injector 8 is at least partially inserted into a bore 11 of the cylinder head 2, the fuel injector 8 with a nozzle tip 12 a combustion chamber 13 between the cylinder head 2 and a reciprocating piston 14 supplies fuel.
- the fuel injector 8 forms with a holding device 15 a, for example, preassembled unit 16 and the holding device 15 is fixedly connected by means of a screw 17 with a housing portion 18 of the internal combustion engine 1.
- the holding device 15 -Version I- spans the fuel injection nozzle with the interposition of a sealing washer 19 against a stop 20 in the bore 11 of the cylinder head. 2
- the holding device 15 has a casing nozzle 21 which surrounds the fuel injection nozzle 8 in regions and has a fastening flange 22 on a side facing away from the nozzle tip 12.
- a holding bushing 23 is provided on the casing pot 21, which delimits a partial region 22 of the fuel injection nozzle 8 with a bore 24.
- retaining bushing 23 and fuel injector 8 only schematically illustrated commercial feathers 25 are effective, whereby the fuel injector 8 is secured in the axial and radial directions.
- a sealing body 25 ' is provided on a side facing the mounting flange 22, which is effective between a bore portion of the bore 24 and a shaft portion of the fuel injection nozzle 8 and prevents fuel leakage.
- the enveloping pot 21 is a rotationally symmetrical body, which is made with the mounting flange 22 and the retaining sleeve 23 in one piece, Fig. 3 -; However, it is also conceivable to manufacture said parts separately from each other and then to assemble them.
- the screw 17 comprises fastening screws 26, 27, 28, which are arranged uniformly distributed on a circumferential center line 29 of the annular mounting flange 22, and the holding device 15 on the valve cover 5 performing housing section 18 holds -. Fig. 2 -.
- the enveloping pot 21, which projects into the valve cover 5, has defined resilient properties in the axial direction AA.
- spring steel is suitable; but also the use of composite materials is possible for the production of said sheath pot.
- the enveloping pot 21 is designed in the manner of a tapered conical jacket 30 from the fastening flange 22 in the direction of the retaining sleeve 23, being provided starting from the fastening flange 22 to the retaining sleeve 23 with a first jacket section 31 extending only over a partial length TI of the jacket 30. And from one end 32 of the partial length TI of the first jacket portion 31 extends to the retaining bushing 23, a second shell portion 33.
- the first shell portion 31 includes with respect to a central longitudinal plane BB a smaller angle ⁇ than a corresponding angle ⁇ of the second shell portion 33rd
- a holding device 34 is designed to accommodate two fuel injection nozzles 35, 36 -Version II- and consists of a first enveloping pot 37 and a second enveloping pot 38, which are connected to a first retaining sleeve 39 and a second retaining sleeve 40.
- the first and second enveloping cups 37, 38 are combined by a frame 41 to form a substantially oval structural unit 42 made of metal, plastic or the like, e.g. and consists of one piece, e.g. is made by forming.
- the assembly 42 and the frame 41 is provided with a circumferential support flange 43 which rests on a corresponding receiving plane 44 of a housing portion 45 in the form of a valve cover 46.
- a cross-sectionally U-shaped groove 47 Adjacent to the receiving plane 44 of the valve cover 46 is a cross-sectionally U-shaped groove 47 is provided, wherein the cross section is inclined by 90 ° to the side.
- the channel 47 serves to receive a sealing body 48, which is effective between channel 47 and frame 41 of the assembly 38.
- a fastening screw 49 is provided in a central longitudinal plane C-C between the first enveloping pot 37 and the second enveloping pot 38, which is in operative connection with a thread 50 in a cylinder head 51 and holds the assembly 32 under tension on the valve cover 42 in position.
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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)
Description
Die Erfindung bezieht sich auf eine Einrichtung zur Festsetzung zumindest einer Kraftstoffeinspritzdüse für eine Brennkraftmaschine nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a device for fixing at least one fuel injection nozzle for an internal combustion engine according to the preamble of
Es ist eine Einrichtung bekannt,
Aus der
Die
Weitere Einrichtungen zur Festsetzung von Kraftstoffeinspritzdüsen sind insbesondere aus der
Es ist Aufgabe der Erfindung eine Einrichtung zur Festsetzung wenigstens einer Kraftstoffeinspritzdüse mit einer Haltevorrichtung zu konzipieren, die sich durch gute Funktion, einfache Montage und leichte Umsetzbarkeit auszeichnet.It is an object of the invention to design a device for fixing at least one fuel injector with a holding device, which is characterized by good function, ease of installation and ease of implementation.
Nach der Erfindung wird diese Aufgabe durch die Merkmale des Patentanspruchs 1 gelöst. Weitere, die Erfindung ausgestaltende Merkmale sind in den Unteransprüchen enthalten.According to the invention, this object is solved by the features of
Die mit der Erfindung hauptsächlich erzielten Vorteile sind darin zu sehen, dass die Einrichtung mit der Haltevorrichtung die Kraftstoffeinspritzdüse an dem Gehäuseabschnitt der Brennkraftmaschine vorbildlich in Lage hält. Dabei lassen sich sowohl die Kraftstoffeinspritzdüse mit der Haltevorrichtung wie auch die Haltevorrichtung mit dem Gehäuseabschnitt auf einfache Weise verbinden - einfach ist auch die Demontage. Und auch die mit fachmännischem Können realisierbare Haltevorrichtung ist in diesem Zusammenhang zu erwähnen. Die bauliche Gestaltung der Haltevorrichtung mit Befestigungsflansch, Hülltopf und Befestigungsflansch setzt auf dem Gebiet Festsetzung von Kraftstoffeinspritzdüsen Maßstäbe. Hervorzuheben ist, dass zumindest der Hülltopf durch einen rotationssymmetrischen Körper gebildet wird, an den der Befestigungsflansch und die zur Axial- und auch Radialsicherung dienende Haltebuchse problemfrei anschließbar sind, wobei zur Sicherung der Kraftstoffeinspritzdüse in der Haltbuchse handelsübliche Passfedern dienen. Eine erfindungsgemäße Festlegung der Haltevorrichtung ist, wenn die Befestigungsschrauben geleichmäßig verteilt auf einer Umfangsmittellinie ihres Befestigungsflansches angeordnet sind. Ein hervorragender Anschluss der Haltevorrichtung über den Befestigungsflansch und die Befestigungsschrauben wird dadurch erreicht, dass besagte Haltevorrichtung an dem einen Ventildeckel der Brennkraftmaschine darstellenden Gehäuseabschnitt befestigt ist. Ein vorzügliches Zusammenwirken der Haltevorrichtung mit der Kraftstoffeinspritzdüse ergibt sich, wenn der z.B. aus federndem Stahl bestehende Hülltopf in axialer Richtung definiert federnde Eigenschaften besitzt. Unterstützt wird dies dadurch, dass der Hülltopf erfindungsgemäß vom Befestigungsflansch aus in Richtung Haltebuchse nach Art eines zusammenlaufenden konischen Mantels ausgeführt ist. Darüber hinaus ist positiv, dass der Mantel des Hülltopfs benachbart dem Befestigungsflansch in Richtung Haltebuchse mit einem ersten lediglich über eine Teillänge des Mantels konischen Mantelabschnitt versehenen ist, wobei sich von einem Ende der Teillänge des Mantels aus bis zur Haltebuchse ein zweiter Mantelabschnitt erstreckt. Vorteilhaft bei dieser Ausbildung ist, dass der erste Mantelabschnitt bezogen auf eine Mittellängsachse des Hülltopfs einen kleineren Winkel einschließt als ein entsprechender Winkel des zweiten Mantelabschnitts.The advantages achieved by the invention are to be seen in the fact that the device with the holding device holds the fuel injection nozzle in exemplary fashion on the housing section of the internal combustion engine. In this case, both the fuel injector with the holding device as well as the holding device with the housing portion in a simple way connect - easy is also the disassembly. And also the realizable with expert skills holding device is mentioned in this context. The structural design of the holding device with mounting flange, casing pot and mounting flange sets standards in the field of fixing fuel injectors. It should be emphasized that at least the enveloping pot is formed by a rotationally symmetrical body to which the mounting flange and serving for axial and radial locking bushing are connected problem-free, serving to secure the fuel injector in the retaining sleeve commercially available feather keys. A determination of the holding device according to the invention is when the fastening screws are arranged gleichichmäßig distributed on a circumferential center line of its mounting flange. An excellent connection of the holding device via the mounting flange and the fastening screws is achieved in that said holding device is fastened to the housing section which represents a valve cover of the internal combustion engine. An excellent interaction of the holding device with the fuel injector results when the existing example of resilient steel Covering pot in the axial direction has defined resilient properties. This is supported by the fact that the shroud is carried out according to the invention from the mounting flange in the direction of retaining sleeve in the manner of a converging conical shell. In addition, it is positive that the jacket of Hüllopfs is adjacent to the mounting flange in the direction of retaining sleeve provided with a first only over a partial length of the shell conical shell portion, extending from one end of the partial length of the shell to the retaining sleeve, a second shell portion. An advantage of this design is that the first shell portion includes a smaller angle relative to a central longitudinal axis of the enveloping pot than a corresponding angle of the second shell portion.
Eine hochrangige weitere Ausbildung der Haltevorrichtung wird dadurch erreicht, dass sie sich zur Aufnahme von zwei Kraftstoffeinspritzdüsen gut eignet und einen ersten und einen zweiten Hülltopf mit einer ersten und einer zweiten Haltebuchse besitzt. Beispiel gebend dabei ist, dass der erste und der zweite Hülltopf zu einer im Wesentlichen aus einem Stück hergestellten Baueinheit zusammengefasst sind, die mit einem umlaufenden Stützflansch auf einer korrespondierenden Aufnahmeebene an dem einen Ventildeckel darstellenden Gehäuseabschnitt aufliegt. Auf besondere Art ergänzt wird diese Ausführung dadurch, dass benachbart der Aufnahmeebene des Ventildeckels eine im Querschnitt U-förmige Rinne zur Aufnahme eines Dichtkörpers vorgesehen ist, der zwischen Rinne und Baueinheit wirksam ist. Schließlich wird diese Haltevorrichtung gezielt optimiert, indem in einer Mittellängsebene zwischen dem ersten und dem zweiten Hülltopf eine einzige Befestigungsschraube angeordnet ist, die mit einem Gewinde des Zylinderkopfs in Wirkverbindung steht und die Baueinheit am Ventildeckel funktionsgerecht in Lage hält.A high-level further design of the holding device is achieved in that it is well suited for receiving two fuel injectors and has a first and a second Hüllopf with a first and a second retaining sleeve. By way of example, it is hereby given that the first and the second enveloping pot are combined to form a structural unit produced substantially from one piece, which rests with a surrounding supporting flange on a corresponding receiving plane on the housing section that represents a valve cover. In a special way, this embodiment is complemented by the fact that adjacent to the receiving plane of the valve cover a cross-sectionally U-shaped groove is provided for receiving a sealing body, which is effective between the channel and the unit. Finally, this holding device is specifically optimized by a single fastening screw is arranged in a central longitudinal plane between the first and the second Hüllopf, which is in operative connection with a thread of the cylinder head and the assembly holds the valve cover functionally in position.
In der Zeichnung werden Ausführungsbeispiele der Erfindung gezeigt, die nachstehend näher erläutert werden.In the drawings, embodiments of the invention are shown, which are explained in more detail below.
Es zeigen:
- Fig. 1
- eine schematische Teilschrägansicht auf eine Brennkraftmaschine;
- Fig. 2
- einen Schnitt nach der Linie II-II der
Fig. 1 in größerem Maßstab mit einer ersten Ausführungsform einer Haltevorrichtung für eine Kraftstoffeinspritzdüse -Version I-; - Fig. 3
- eine Einzelheit X der
Fig. 2 in größerem Maßstab; - Fig. 4
- eine schematische Schrägansicht einer Innenseite eines Ventildeckels mit einer Verschraubung der Haltevorrichtung nach den
Fig. 2 und3 ; - Fig. 5
- eine schematische Schrägansicht von oben auf die Haltevorrichtung mit Einspritzventil;
- Fig. 6
- einen Schnitt nach der Linie IV-IV
Fig. 1 mit einer Haltevorrichtung für mehrere Kraftstoffeinspritzdüsen -Version II-; und - Fig. 7
- eine isometrische Explosionszeichnung der Haltevorrichtung nach
Fig. 6 .
- Fig. 1
- a schematic partial oblique view of an internal combustion engine;
- Fig. 2
- a section along the line II-II of
Fig. 1 on a larger scale with a first embodiment of a holding device for a fuel injector -version I-; - Fig. 3
- a detail X the
Fig. 2 on a larger scale; - Fig. 4
- a schematic oblique view of an inner side of a valve cover with a screw connection of the holding device according to the
Fig. 2 and3 ; - Fig. 5
- a schematic oblique view from above of the holding device with injection valve;
- Fig. 6
- a section along the line IV-IV
Fig. 1 with a holding device for a plurality of fuel injection nozzles -Version II-; and - Fig. 7
- an isometric exploded view of the holding device according to
Fig. 6 ,
Von einer Brennkraftmaschine 1 ist ein Zylinderkopf 2 gezeigt, der zwei nicht gezeigte, Ventile betätigende Nockenwellen 3, 4 aufnimmt und mit einem Ventildeckel 5 verschraubt ist. Etwa parallel zum Ventildeckel 5 erstreckt sich eine Abdeckhaube 6 einer Ansaugkammer 7, die zumindest teilweise vom Ventildeckel 5 gebildet wird -
Die Direkteinspritzung umfasst für die Zylinder Kraftstoffeinspritzdüsen 8, 9, zu deren Festsetzung an dem Ventildeckel 5 der Brennkraftmaschine 1 eine Einrichtung 10 vorgesehen ist -
Die Haltevorrichtung 15 weist einen die Kraftstoffeinspritzdüse 8 bereichsweise umringenden Hülltopf 21 auf, der auf einer der Düsenspitze 12 abgekehrten Seite einen Befestigungsflansch 22 verfügt. Mit Abstand zum Befestigungsflansch 22 ist am Hülltopf 21 eine Haltebuchse 23 vorgesehen, die einen Teilbereich 22 der Kraftstoffeinspritzdüse 8 mit einer Bohrung 24 begrenzt. Zwischen Haltebuchse 23 und Kraftstoffeinspritzdüse 8 sind nur schematisch dargestellte handelsübliche Passfedern 25 wirksam, wodurch die Kraftstoffeinspritzdüse 8 in axialer und radialer Richtung gesichert ist. Innerhalb der Haltebuchse 23 ist auf einer dem Befestigungsflansch 22 zugekehrten Seite ein Dichtkörper 25' vorgesehen, der zwischen einem Bohrungsabschnitt der Bohrung 24 und einem Schaftbereich der Kraftstoffeinspritzdüse 8 wirksam ist und Kraftstoffaustritt verhindert.The holding
Der Hülltopf 21 ist ein rotationssymmetrischer Körper, der mit dem Befestigungsflansch 22 und der Haltebuchse 23 aus einem Stück hergestellt ist -
Der Hülltopf 21, der in den Ventildeckel 5 hineinragt, verfügt in axialer Richtung A-A über definiert federnde Eigenschaften. Als Werkstoff für den Hülltopf 21 eignet sich Federstahl; aber auch der Einsatz von Verbundwerkstoffen ist für die Herstellung des besagten Hülltopf möglich. Der Hülltopf 21 ist vom Befestigungsflansch 22 aus in Richtung Haltebuchse 23 nach Art eines sich verjüngenden konischen Mantels 30 gestaltet, wobei er beginnend am Befestigungsflansch 22 zur Haltbuchse 23 hin mit einem ersten lediglich über eine Teillänge TI des Mantels 30 verlaufenden Mantelabschnitt 31 versehen ist. Und von einem Ende 32 der Teillänge TI des ersten Mantelabschnitts 31 aus erstreckt sich bis zur Haltebuchse 23 ein zweiter Mantelabschnitt 33. Der erste Mantelabschnitt 31 schließt bezogen auf eine Mittellängsebene B-B einen kleineren Winkel α ein als ein entsprechender Winkel β des zweiten Mantelabschnitts 33.The enveloping
Eine Haltevorrichtung 34 ist zur Aufnahme von zwei Kraftstoffeinspritzdüsen 35, 36 ausgebildet -Version II- und setzt sich aus einem ersten Hülltopf 37 und einem zweiten Hülltopf 38 zusammen, die mit einer ersten Haltebuchse 39 und einer zweiten Haltebuchse 40 verbunden sind. Der erste und der zweite Hülltopf 37, 38 sind über einen Rahmen 41 zu einer im Wesentlichen ovalen Baueinheit 42 zusammengefasst, die aus Metall, Kunststoff oder dergl. z.B. besteht und aus einem Stück z.B. durch Umformen hergestellt ist. Die Baueinheit 42 bzw. der Rahmen 41 ist mit einem umlaufenden Stützflansch 43 versehen, der auf einer korrespondierenden Aufnahmeebene 44 eines Gehäuseabschnitts 45 in Gestalt eines Ventildeckels 46 aufliegt.A holding
Benachbart der Aufnahmeebene 44 des Ventildeckels 46 ist eine im Querschnitt U-förmig ausgebildete Rinne 47 vorgesehen, wobei der Querschnitt um 90° zur Seite geneigt ist. Die Rinne 47 dient zur Aufnahme eines Dichtkörpers 48, der zwischen Rinne 47 und Rahmen 41 der Baueinheit 38 wirksam ist. Schließlich ist in einer Mittellängsebene C-C zwischen dem ersten Hülltopf 37 und dem zweiten Hülltopf 38 eine Befestigungsschraube 49 vorgesehen, die mit einem Gewinde 50 in einem Zylinderkopf 51 in Wirkverbindung steht und die Baueinheit 32 unter Spannung am Ventildeckel 42 in Lage hält.Adjacent to the receiving
Claims (11)
- Device (10) comprising a cylinder head (2) and a retaining device (15) for fixing at least one fuel injection nozzle (8) for an internal combustion engine (1), which fuel injection nozzle (8) can be inserted in a bore (11) of a cylinder head (2) and can supply fuel to a combustion chamber (13) between the cylinder head (2) and a reciprocating piston (14) by means of a nozzle tip (12), it being possible, by means of the retaining device (15) and a plurality of fastening screws (17), to hold the fuel injection nozzle (8) in position on a housing portion (18) of the internal combustion engine (1) such that the retaining device (15) clamps the fuel injection nozzle (8) against a stop (20) in the bore (11) of the cylinder head (2), the retaining device (15) of the fuel injection nozzle (8) comprising a jacket cup (21) which surrounds said nozzle at least in portions and which has a fastening flange (22) and a retaining bushing (23) at least for axially securing the fuel injection nozzle (8), and it being possible to fasten the retaining device (15) on the housing portion (18) by means of the fastening flange (22) using fastening screws (26, 27 and 28), characterized in that the fastening flange (22) is annular and the evenly distributed fastening screws (26, 27 and 28) are arranged on a circumferential center line (29) of said fastening flange (22), the jacket cup (21) being designed in the manner of a tapered conical casing (30) from the fastening flange (22) in the direction of the retaining bushing (23).
- Device according to claim 1, characterized in that at least the jacket cup (21) of the retaining device (15) is formed by a rotationally symmetrical body.
- Device according to claims 1 and 2, characterized in that the retaining device (15) is fastened to the housing portion (18) by means of the fastening flange (22) and the fastening screws (26, 27, and 28), which housing portion constitutes a valve cover (5) of the internal combustion engine (1).
- Device according to claim 1, characterized in that one or more feather keys (25) operate between the retaining device (15) and the fuel injection nozzle (8).
- Device according to one or more of the preceding claims, characterized in that the jacket cup (21) which consists of resilient steel, for example, has defined resilient properties in the axial direction (A-A).
- Device according to claim 1, characterized in that the casing (30) of the jacket cup (21) is provided, adjacent to the fastening flange (22) in the direction of the retaining bushing (23), with a first casing portion (31) which only extends over a partial length (TI) of the casing (30), a second casing portion (33) extending from one end (32) of the partial length (TI) of the first casing portion (31) to the retaining bushing (23).
- Device according to claim 6, characterized in that the first casing portion (31), with respect to a central longitudinal plane (B-B) of the jacket cup (21), encloses an angle (α) that is smaller than a corresponding angle (β) of the second casing portion (33).
- Device according to one or more of the preceding claims, characterized in that a retaining device (34) is designed to receive two fuel injection nozzles (34 and 35) and has a first and a second jacket cup (37 and 38) and a first and a second retaining bushing (40 and 41).
- Device according to claim 8, characterized in that the first and the second jacket cup (38 and 39) are combined to form a component (42) which is substantially produced from one piece, and, by means of a circumferential, for example oval, support flange (43), rests on a corresponding receiving plane (44) of a housing portion (45) which constitutes a valve cover (46) of the internal combustion engine (1).
- Device according to claim 9, characterized in that a cross-sectionally U-shaped groove (47) for receiving a sealing body (48) is provided adjacent to the receiving plane (44) of the valve cover (46), which sealing body operates between the groove (47) and the component (42).
- Device according to claims 8 and 9, characterized in that a fastening screw (49) is arranged on a central longitudinal plane (C-C) between the first and the second jacket cup (37 and 38), which fastening screw is in operative connection with a thread (50) in a cylinder head (51) and holds the component (42) in position on the valve cover (46) under tension.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015001614.8A DE102015001614A1 (en) | 2015-02-07 | 2015-02-07 | Device for fixing at least one fuel injection nozzle |
Publications (2)
Publication Number | Publication Date |
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EP3054149A1 EP3054149A1 (en) | 2016-08-10 |
EP3054149B1 true EP3054149B1 (en) | 2019-08-07 |
Family
ID=55237482
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP16000187.1A Active EP3054149B1 (en) | 2015-02-07 | 2016-01-27 | Device for fixing at least one fuel injection nozzle |
Country Status (5)
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US (1) | US20160230729A1 (en) |
EP (1) | EP3054149B1 (en) |
JP (1) | JP6742744B2 (en) |
DE (1) | DE102015001614A1 (en) |
ES (1) | ES2749105T3 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106286059A (en) * | 2016-09-13 | 2017-01-04 | 中国北方发动机研究所(天津) | A kind of fuel injector for internal combustion engines locating sleeve structure |
GB2620755A (en) * | 2022-07-20 | 2024-01-24 | Jcb Res | Fuel injector seal |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT350854B (en) | 1976-08-26 | 1979-06-25 | List Hans | DEVICE FOR FASTENING A FUEL INJECTION NOZZLE RECEIVED IN A BORE OF A CYLINDER HEAD OF A COMBUSTION MACHINE |
JPS61549Y2 (en) * | 1980-09-25 | 1986-01-09 | ||
JPH03182680A (en) | 1989-12-08 | 1991-08-08 | Nissan Motor Co Ltd | Securing structure for fuel injection nozzle |
DE19857485A1 (en) * | 1998-12-14 | 2000-06-15 | Bosch Gmbh Robert | Assembly device for assembling and disassembling a fuel injector |
DE19954065A1 (en) | 1999-11-10 | 2001-05-23 | Bosch Gmbh Robert | Assembly for fastening an injection nozzle in a holder |
JP2001140729A (en) * | 1999-11-17 | 2001-05-22 | Yanmar Diesel Engine Co Ltd | Fuel injection valve mounting structure of engine |
DE10007174A1 (en) * | 2000-02-17 | 2001-08-30 | Siemens Ag | Clamp element for securing fuel injection valve in engine block - has opening for insertion of fuel injection valve communicating with opening of reduced width for retention of inserted valve |
DE10109408A1 (en) * | 2001-02-28 | 2002-09-05 | Bosch Gmbh Robert | fastening device |
JP3997946B2 (en) * | 2002-07-26 | 2007-10-24 | 株式会社デンソー | Fuel supply device |
EP1529955A1 (en) * | 2003-11-06 | 2005-05-11 | Renault s.a.s. | Fuel injector clamping means |
DE102005009118A1 (en) * | 2005-03-01 | 2006-09-14 | Dr.Ing.H.C. F. Porsche Ag | Cylinder head for a direct-injection internal combustion engine |
EP2187039B1 (en) * | 2005-03-03 | 2014-05-07 | Robert Bosch GmbH | Fuel injection system |
US7334572B1 (en) * | 2007-01-30 | 2008-02-26 | Ford Global Technologies, Llc | System and method for securing fuel injectors |
DE102008009385A1 (en) * | 2008-02-14 | 2009-08-27 | Volkswagen Ag | Internal-combustion engine has actuator and actuator locking cylinder head, in which fuel injection devices are arranged for each actuator, and fastening elements are provided for attachment of tensioning bracket at cylinder head |
US8047183B2 (en) * | 2009-05-29 | 2011-11-01 | Cummins Intellectual Properties, Inc. | Fuel injector, clamping assembly and method of mounting a fuel injector |
DE102012206890A1 (en) * | 2012-04-26 | 2013-10-31 | Robert Bosch Gmbh | Arrangement with a fuel distributor and a plurality of fuel injection valves |
DE102012015907B3 (en) | 2012-08-10 | 2013-10-17 | Neander Motors Ag | Lifting cylinder combustion engine e.g. outboard type diesel engine, for watercraft, has shaft fixed directly or indirectly to supercharger device at upper front wall of component, which comprises cylinder head and cylinder housing |
EP2811113A1 (en) * | 2013-06-06 | 2014-12-10 | Caterpillar Global Mining Europe GmbH | Modular cutting head |
JP6514553B2 (en) * | 2014-06-18 | 2019-05-15 | マルヤス工業株式会社 | High pressure fuel delivery pipe assembly for direct injection engines |
JP2016075192A (en) * | 2014-10-03 | 2016-05-12 | トヨタ自動車株式会社 | Cylinder head |
-
2015
- 2015-02-07 DE DE102015001614.8A patent/DE102015001614A1/en not_active Ceased
-
2016
- 2016-01-27 EP EP16000187.1A patent/EP3054149B1/en active Active
- 2016-01-27 ES ES16000187T patent/ES2749105T3/en active Active
- 2016-02-05 US US15/016,533 patent/US20160230729A1/en not_active Abandoned
- 2016-02-08 JP JP2016021781A patent/JP6742744B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
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None * |
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ES2749105T3 (en) | 2020-03-19 |
JP6742744B2 (en) | 2020-08-19 |
EP3054149A1 (en) | 2016-08-10 |
JP2016145576A (en) | 2016-08-12 |
DE102015001614A1 (en) | 2016-08-11 |
US20160230729A1 (en) | 2016-08-11 |
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