EP1427936B1 - Befestigungsanordnung zur befestigung von injektoren an einem zylinderkopf - Google Patents
Befestigungsanordnung zur befestigung von injektoren an einem zylinderkopf Download PDFInfo
- Publication number
- EP1427936B1 EP1427936B1 EP02774373A EP02774373A EP1427936B1 EP 1427936 B1 EP1427936 B1 EP 1427936B1 EP 02774373 A EP02774373 A EP 02774373A EP 02774373 A EP02774373 A EP 02774373A EP 1427936 B1 EP1427936 B1 EP 1427936B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- injector
- force
- cylinder head
- tensioning element
- sleeve
- 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
Links
- 210000000078 claw Anatomy 0.000 claims description 4
- 238000007789 sealing Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000000446 fuel Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
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
- 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 present invention relates to a fastening arrangement for fixing an injector to a cylinder head according to the preamble of claim 1.
- FIG. 4 shows a fastening arrangement for fastening an injector to a cylinder head according to the prior art.
- the injector 1 consists in a known manner of several injector modules 7, 2, 3, which are arranged one after the other in the axial direction MM of the injector.
- the main components of the injector are an injector body 7, a stop disk 2, an injection nozzle 3 and a nozzle retaining nut 4, which braces the injector modules 7, 2, 3 against each other.
- the nozzle lock nut 4 brings a predefined axial force F v .
- the axial force F v is designed such that both a sealing function is met at the interfaces between the individual injector modules, as well as a deformation and load inside the Injektormodule does not exceed a predetermined level to prevent damage to the components.
- the thus biased injector 1 is sealed by a sealing washer 5 on the cylinder head 6.
- the necessary force for sealing force F is applied directly to the injector body 1. In order to prevent damage to the components of the injector 1, this fastening force F must be limited. As a result, however, the seal between the cylinder head 6 and the injector 1 is limited. As a result, unwanted leaks and leaks can occur between the cylinder head 6 and the injector 1.
- an injection device for Injecting fuel into an internal combustion engine known after being mounted in a cylinder head an injector with a first engagement part and a second engagement part, which are arranged axially opposite one another as well as a fastener that around an outer perimeter the injector for attaching the injector to the cylinder head by means of a thread, wherein the fastening element is designed such that it on the first engagement part is present and pushes this in a direction in which the injector on the cylinder head via the threaded engagement with attached to the cylinder, and wherein the fastener is designed such that it bears against the second engagement part and pushes in an opposite direction when the Threaded engagement with the cylinder head is loosened to the To remove the injector from the cylinder head.
- the injector has several in the axial direction successive Injektormodule, which are clamped by means of biasing elements against each other. In this case, the fastening force to attach the injector indirectly or
- the fastening arrangement according to the invention for fastening the injector on the cylinder head is designed such that a fastening force for fixing the injector indirectly or directly on the biasing element of the injector attacks. This can prevent the fastening force acts directly on the injector modules. Thus it is possible that a higher fastening force than in the state of Technique is used, giving an improved seal between the cylinder head and the injector results. Because the fastening force is no longer directly on the injector modules is applied, can also damage the injector modules safely prevented. By the introduction the force on the biasing member of the injector can thus the fastening force is completely used for sealing become.
- the fastening force is preferably in Direction of the introduction of force introduced at a position, which after a first bracing contact between the biasing element and the injector modules.
- the fastening force sleeve-like component brought in.
- the sleeve-like component engages while on a formed on the biasing member collar.
- the fastening force on the sleeve-like component and the collar of the biasing member directly on the cylinder head transfer. It should be noted that between the biasing element and the cylinder head for better sealing still a sealing disc can be arranged.
- the collar is at a lower End region of the biasing element arranged. Thereby can be provided by the entire length of the biasing element Be exploited flexibility of the biasing element, to a force on the other components of the injector to prevent.
- the annular element is between the biasing member and the sleeve-like Component arranged an annular element.
- the annular element Around while a radial component introduced onto the biasing element the mounting force to keep as small as possible, points the annular element is a circular or oval cross section.
- the annular element may, for example designed as a stamping ring or as a slotted ring be.
- the annular element is designed as a nut, which screwed on an external thread on the biasing element is.
- the fastening force can then on the mother Preload element be initiated.
- a sleeve-like Component has the use of the mother opposite the training of a federal on the biasing element the advantage that the sleeve-like component also after the installation of the Injector can be plugged.
- a Federal has the sleeve-like component before the final assembly be attached to the injector, since after the final assembly of the Injector an attaching the sleeve-like component of the the Bund opposite side is not possible, since on Injector usually protruding components for e.g.
- the use of the nut thus has mounting advantages.
- the external thread for fastening the nut is preferably arranged at a position of the biasing member, which in the direction of the introduction of force in one position the first bracing contact of the biasing member with the injector modules is. Particularly preferred is the external thread arranged at the lower end portion of the biasing member.
- the injector and the mounting arrangement to allow the biasing element is preferably designed as a nozzle retaining nut.
- This is a first Verspannking advantageous via a thread and a second Clamping contact is by a paragraph on the nozzle retaining nut provided.
- the fastening force on the biasing element applied by means of a claw attached to the cylinder head can, for example, on the cylinder head screwed or caulked or attached differently be.
- the force application according to the invention of the fastening force can thus higher on the biasing element of the injector
- Axial forces for sealing between the injector and the Cylinder head can be realized as in the prior art.
- the introduction of the fastening force on the biasing element after a first bracing contact to a force on components of the injector completely ruled out.
- the biasing element There may be some flexibility be exploited of the biasing element. If the first bracing additionally formed from thread is, the exploitable flexibility can be further increased, because the thread has a rigid behavior of the biasing element further reduced. This applies in the same way when on the biasing element a nut is provided, over which the fastening force is initiated.
- FIG. 1 shows a fastening arrangement for fastening a Injector 1 on a cylinder head 6 according to a non-inventive Example shown.
- the injector 1 consists of several injector modules 7, 2, 3, which are arranged one after the other in the axial direction. More accurate the injector modules are as injector body 7, as stop disc 2 and formed as an injection nozzle 3.
- the injector modules 7, 2, 3 are in a known manner by means of a nozzle retaining nut 4 braced against each other, taking on the nozzle retaining nut 4 a first bracing contact 13 and a second Verspannitch 14 is formed to the injector modules.
- the first bracing 13 is formed as a thread and the second brace 14 is referred to as a heel in FIG the nozzle lock nut 4 is formed.
- the fastening arrangement for fastening the injector 1 am Cylinder head 6 consists mainly of a sleeve 8, which on a formed on the nozzle retaining nut 4 collar 9 is present.
- the collar 9 is at a lower end 10 formed on the outside of the nozzle lock nut 4.
- the fastening force F on the sleeve. 8 introduced so that the introduction of force through the sleeve 8, the collar 9 and a between the nozzle lock nut 4 and the Cylinder head 6 arranged sealing washer 5 on the cylinder head 6 takes place.
- the introduction of the fastening force F in the direction of the introduction of force in Figure 1 in Direction of the arrow F down
- a position which in the direction of the introduction of force after the first bracing contact 13 is located (see Figure 1).
- FIG. 2 shows a fastening arrangement according to a first embodiment Embodiment of the present invention shown.
- FIG. 2 shows a fastening arrangement according to a first embodiment Embodiment of the present invention shown.
- the same or functionally identical parts with the the same reference numerals as in FIG.
- the use of the stamping ring 11 results in a resultant introduction of force F G on the nozzle lock nut 4, which is composed of an axial force F A and a radial force F R.
- force F G on the nozzle lock nut 4
- F A axial force
- F R a radial force
- the contact area between the sleeve 8 and the ferrule 11 is formed such that the sleeve 8 corresponds to the outer contour of the stamping ring 11.
- the cross section of the stamping ring is preferably circular or oval. It should be noted that the connection region between the sleeve 8 and the stamping ring 11 may also be formed as a bevel.
- a nut 12 is provided, which on an external thread 15 on screwed lower end portion 10 of the nozzle lock nut 4 is.
- the mother 12 assumes the function of the federal 9th in the previous figures.
- the fastening force F thus becomes via the sleeve 8 and the nut 12 over the lower area the nozzle lock nut 4 transmitted to the sealing surfaces.
- the third embodiment in particular a mounting technical advantage to the effect that the sleeve. 8 not already attached during assembly of the injector 1 must be, but also attached after installation of the injector can be. Subsequently, then the mother 12th screwed onto the external thread 15 on the nozzle lock nut 4.
- the nut 12 may be formed, for example, as a groove nut be, which has recesses at their contact surfaces, so that it can be screwed on using a special tool. This can prevent them from being used a normal mother possible introduction of excessive radial forces is prevented.
- the present invention relates to a fastening arrangement for fixing an injector 1 to a cylinder head 6.
- the injector 1 has a plurality of successive in the axial direction Injector modules 7, 2, 3, which by means of a Biasing element 4 are braced against each other.
- a fastening force F for fixing the injector 1 engages the biasing element 4 to adverse effects of force on the injector modules to prevent.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Description
- Figur 1
- eine schematische Schnittansicht einer Befestigungsanordnung gemäß eines nicht erfindungsgemäßen Beispiels,
- Figur 2
- eine schematische Schnittansicht einer Befestigungsanordnung gemäß eines ersten Ausführungsbeispiels der vorliegenden Erfindung,
- Figur 3
- eine schematische Schnittansicht einer Befestigungsanordnung gemäß eines zweiten Ausführungsbeispiels der vorliegenden Erfindung und
- Figur 4
- eine schematische Schnittansicht einer Befestigungsanordnung gemäß dem Stand der Technik.
Claims (8)
- Befestigungsanordnung zur Befestigung eines Injektors (1) an einem Zylinderkopf (6), wobei der Injektor (1) mehrere in Axialrichtung (M-M) aufeinander folgende Injektormodule (7, 2, 3) aufweist, welche mittels eines Vorspannelements (4) gegeneinander verspannt sind, wobei eine über ein hülsenartiges Bauteil (8) eingebrachte Befestigungskraft (F) zur Befestigung des Injektors (1) mittelbar oder unmittelbar am Vorspannelement (4) angreift, dadurch gekennzeichnet, dass zwischen dem Vorspannelement (4) und dem hülsenartigen Bauteil (8) ein ringförmiges Element (11, 12) angeordnet ist, wobei das ringförmige Element (11) einen kreisförmigen oder ovalen Querschnitt aufweist.
- Befestigungsanordnung zur Befestigung eines Injektors (1) an einem Zylinderkopf (6), wobei der Injektor (1) mehrere in Axialrichtung (M-M) aufeinander folgende Injektormodule (7, 2, 3) aufweist, welche mittels eines Vorspannelements (4) gegeneinander verspannt sind, wobei eine über ein hülsenartiges Bauteil (8) eingebrachte Befestigungskraft (F) zur Befestigung des Injektors (1) mittelbar oder unmittelbar am Vorspannelement (4) angreift, dadurch gekennzeichnet, dass zwischen dem Vorspannelement (4) und dem hülsenartigen Bauteil ein ringförmiges Element angeordnet ist, wobei das ringförmige Element als Mutter ausgebildet ist, welche auf einem Außengewinde am Vorspannelement aufgeschraubt ist.
- Befestigungsanordnung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Befestigungskraft (F) in Richtung der Krafteinleitung an einer Position hinter einem ersten Verspannkontakt (13) zwischen dem Vorspannelement (4) und einem Injektormodul (7) in das Vorspannelement (4) eingebracht wird.
- Befestigungsanordnung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das hülsenartige Bauteil (8) an einem am Vorspannelement (4) ausgebildeten Bund (9) angreift.
- Befestigungsanordnung nach Anspruch 4, dadurch gekennzeichnet, dass der Bund (9) an einem unteren Endbereich (10) des Vorspannelements (4) angeordnet ist.
- Befestigungsanordnung nach Anspruch 2, dadurch gekennzeichnet, dass das Außengewinde (15) an einem unteren Endbereich (10) des Vorspannelements (4) angeordnet ist.
- Befestigungsanordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Vorspannelement (4) als Düsenspannmutter ausgebildet ist, wobei der erste Verspannkontakt (13) durch ein Gewinde ausgebildet ist.
- Befestigungsanordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Befestigungskraft (F) durch wenigstens eine am Zylinderkopf (6) befestigte Pratze aufgebracht wird.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10145988A DE10145988A1 (de) | 2001-09-18 | 2001-09-18 | Befestigungsanordnung zur Befestigung von Injektoren an einem Zylinderkopf |
DE10145988 | 2001-09-18 | ||
PCT/DE2002/003456 WO2003025384A1 (de) | 2001-09-18 | 2002-09-16 | Befestigungsanordnung zur befestigung von injektoren an einem zylinderkopf |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1427936A1 EP1427936A1 (de) | 2004-06-16 |
EP1427936B1 true EP1427936B1 (de) | 2005-08-03 |
Family
ID=7699431
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02774373A Expired - Lifetime EP1427936B1 (de) | 2001-09-18 | 2002-09-16 | Befestigungsanordnung zur befestigung von injektoren an einem zylinderkopf |
Country Status (5)
Country | Link |
---|---|
US (1) | US6886539B2 (de) |
EP (1) | EP1427936B1 (de) |
JP (1) | JP4248398B2 (de) |
DE (2) | DE10145988A1 (de) |
WO (1) | WO2003025384A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6868539B1 (en) * | 2000-06-28 | 2005-03-15 | Microsoft Corp. | System and method providing single application image |
DE102007001549A1 (de) * | 2007-01-10 | 2008-07-17 | Robert Bosch Gmbh | Dehnhülsenbefestigung |
US7513242B2 (en) * | 2007-05-03 | 2009-04-07 | Cummins Inc. | Fuel injector assembly with injector seal retention |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1948557A (en) * | 1931-07-03 | 1934-02-27 | Bosch Robert | Fuel spraying nozzle |
GB565793A (en) * | 1943-04-22 | 1944-11-28 | Paxman & Co Ltd Davey | Improvements in or relating to fuel injection devices for internal combustion engines |
DE3408012A1 (de) * | 1984-03-05 | 1985-09-05 | Gerhard Dipl.-Ing. Warren Mich. Mesenich | Elektromagnetisches einspritzventil |
DE3908796A1 (de) * | 1988-06-06 | 1989-12-14 | Bosch Gmbh Robert | Kraftstoff-einspritzduese fuer brennkraftmaschinen |
DE4315233A1 (de) * | 1993-05-07 | 1994-07-28 | Daimler Benz Ag | Direkteinspritzende Brennkraftmaschine mit einem im Zylinderkopf zwischen Gaswechselventilen angeordneten Kraftstoffeinspritzventil |
DE19508305A1 (de) * | 1995-03-09 | 1996-09-12 | Bayerische Motoren Werke Ag | Vorrichtung zur Halterung einer Einspritzdüse an einem Maschinenteil, insbesondere im/am Zylinderkopf einer Brennkraftmaschine |
DE19511703A1 (de) * | 1995-03-30 | 1996-10-02 | Bayerische Motoren Werke Ag | Vorrichtung zur Befestigung einer Einspritzdüse insbesondere am Zylinderkopf einer Brennkraftmaschine |
JPH0988765A (ja) * | 1995-09-27 | 1997-03-31 | Toyota Motor Corp | 内燃機関の燃料噴射弁の取付構造 |
JP3329998B2 (ja) * | 1995-10-17 | 2002-09-30 | 三菱電機株式会社 | 筒内噴射用燃料噴射弁 |
KR100301383B1 (ko) * | 1996-07-18 | 2002-07-03 | 오카메 히로무 | 연료분사장치 |
-
2001
- 2001-09-18 DE DE10145988A patent/DE10145988A1/de not_active Withdrawn
-
2002
- 2002-09-16 WO PCT/DE2002/003456 patent/WO2003025384A1/de active IP Right Grant
- 2002-09-16 JP JP2003528984A patent/JP4248398B2/ja not_active Expired - Fee Related
- 2002-09-16 DE DE50203840T patent/DE50203840D1/de not_active Expired - Fee Related
- 2002-09-16 EP EP02774373A patent/EP1427936B1/de not_active Expired - Lifetime
-
2004
- 2004-03-16 US US10/802,022 patent/US6886539B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2005502820A (ja) | 2005-01-27 |
DE10145988A1 (de) | 2003-05-08 |
US20040173186A1 (en) | 2004-09-09 |
JP4248398B2 (ja) | 2009-04-02 |
WO2003025384A1 (de) | 2003-03-27 |
DE50203840D1 (de) | 2005-09-08 |
US6886539B2 (en) | 2005-05-03 |
EP1427936A1 (de) | 2004-06-16 |
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