EP1239147A2 - Düsenhalterbefestigung - Google Patents
Düsenhalterbefestigung Download PDFInfo
- Publication number
- EP1239147A2 EP1239147A2 EP02005421A EP02005421A EP1239147A2 EP 1239147 A2 EP1239147 A2 EP 1239147A2 EP 02005421 A EP02005421 A EP 02005421A EP 02005421 A EP02005421 A EP 02005421A EP 1239147 A2 EP1239147 A2 EP 1239147A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- nozzle holder
- support element
- holder according
- support
- nozzle
- 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.)
- Withdrawn
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/165—Filtering elements specially adapted in fuel inlets to injector
-
- 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 injection nozzles used in these fixed by nozzle holder In the case of injection systems of internal combustion engines, the injection nozzles used in these fixed by nozzle holder.
- the nozzle holders are attached using clamping screws attached to the internal combustion engine.
- a face of the injector facing the injector Nozzle holder holds the injection nozzle, which is in a bore on the cylinder head of an internal combustion engine is inserted in its installation position.
- the nozzle holder itself is received in the clamping screw surrounding this by means of a support element.
- the fuel injector includes one from a high pressure pump Fuel-fillable common high-pressure manifold (common rail) that over Injection lines with projecting into the combustion chamber of the internal combustion engine to be supplied Injectors is connected.
- the opening and closing movements of the injection valves are each controlled by an electrically controlled control valve, whereby the control valve is designed as a 3/2-way valve. This connects you to an injection port of the injection valve opening high pressure channel with the injection line or a relief line.
- There is a on the control valve member of the control valve High-pressure fillable hydraulic work space provided for adjustment the setting position of the control valve member of the control valve in a relief channel can be controlled.
- US 3,934,903 relates to an injector assembly. There is a connector on the nozzle holder slipped onto a base and is additionally held by means of a coupling ring, which is embedded in an annular groove on the nozzle holder, fixed in its installed position. At the Connection piece two flanges are formed, via which flexible hoses can be plugged in to a further injector arrangement or Lead fuel reservoir. Between the nozzle holder according to US 3,934,903 and the latter an insert washer is inserted.
- the assembly of a snap ring on the nozzle holder is difficult and time-consuming, since one Snap ring or washer have a low deformability, what when pushing the snap ring or a washer onto a nozzle holder Assembly step very hampered.
- the nominal size of the snap ring or washer corresponds to the diameter of an annular groove or a recess on the nozzle holder into which the snap ring or washer is seated after assembly.
- either the snap ring or the washer heated to achieve their expansion or the nozzle holder on which the snap ring or if the washer is to be installed it is cooled in total. Both mounting options are complex and for large series production, in which injection systems and their Components are manufactured, disadvantageous.
- the support element can, depending on the intended use be cut to the required length, which means an individual assembly for different purposes, in particular different nozzle holder diameters allows.
- a support element cut to length can be cut by a Clamping element, be it a clamping nut or a clamping screw, provided insertion opening assemble. With the front end, the support element runs into a channel that through recesses such as recesses or ring grooves on the nozzle holder and Clamping element is limited. If the entire length of the support element is received in the channel, can the assembly formed from the nozzle holder and clamping screw into the injector receiving bore above the combustion chamber. Also at this variant of the support element is a permanent one, due to the assembly Deformation of the support element excluded. The insertion opening in this variant is preferred as a hole on the key surface side of the clamping element educated.
- the helical spring-shaped support element can comprise a circumferential support ring.
- the circumferential support ring makes the deformability of its peripheral surface recorded wire material wound in closely adjacent turns reduced.
- the wire material wound as an outer winding around the support ring leaves do not press together easily, so that this embodiment variant of the invention proposed support element ensures a recording of high pressing forces.
- Support element is to be filled in, the support ring of the support element in different Diameter strengths to be formed, around which the individual turns are then of the outer wire are wound.
- One, for example, on a straight wire support ring section Coiled wire can be easily deformed into an open ring shape on a curve become; the assembly of the support element proposed according to the invention can very easy by simply plugging it into the free space, i.e. the ring groove.
- An open, curved wire ring as a support element is a connection of the open wire ends within the free space in which the support element is inserted in the circumferential direction becomes dispensable.
- FIG. 1 is a longitudinal section of a nozzle holder / injection nozzle arrangement refer to.
- a nozzle holder 1 is shown in FIG screwed to a housing 2.
- Housing 2 is the combustion chamber an internal combustion engine wall, through which in the lower area Nozzle cone 4 of an injection nozzle 3 protrudes. It can be the case with the internal combustion engine both an air-compressing internal combustion engine and a mixture-compressing, spark ignition engine act.
- By means of the essentially as rotationally symmetrical Component nozzle holder 1 is the injection nozzle 3 in one Housing bore 6 fixed.
- An annular collar 5 is provided on the injection nozzle 3, which rests on an annular surface 9 of the housing bore 6.
- the injector 3 is via a sleeve screwed onto the nozzle holder 1, for example, in its installed position held, the sleeve on which a key surface is formed, depending on the depth of the Bore 6 is screwed out of its guide thread to different degrees.
- An external thread 10 is provided in the head region 11 of the nozzle holder 1, via which additional components can be attached to the nozzle holder 1.
- the nozzle holder 1 is with provided in the illustration of Figure 1 inclined bore 12 which in a cross-sectional expansion 13 opens.
- a flow straightener 14 added, which is at its circumference individual in axial Direction extending circumferential slots 15 through which the fuel to the nozzle chamber (Not shown here) can flow out of the injector 3.
- With reference numeral 22 is denotes a drain hole through which fuel can flow into the leak oil.
- Inlet bore 22 is a disc-shaped support element 23 is arranged, on which a supports as a coil spring spring element 24.
- the wall of a combustion chamber of an internal combustion engine is a centering element on the nozzle holder 1 21 added, which as shown in Figure 1 as a spherical body is trained.
- the spherical body protrudes in a housing 2 Longitudinal slot 7 and prevents rotation of the nozzle holder 1 during this Mounting in the housing 2.
- a clamping nut or as a clamping screw Clamping element 16 on which an external thread 17 is located below a key attachment 31 is trained. With the external thread 17, the clamping element 16 is in the internal thread 8 the housing 2 screwed.
- the support element 20 is designed as a worm spring, which on the one hand enclosed by a recess 18 formed on the nozzle holder 1 or an annular groove is.
- a corresponding recess or recess on the clamping element 16 19 formed which receive the support member 20.
- the pre-assembled module formed from nozzle holder 1 and clamping element 16 in the Screwed in housing bore 6 for fixing the injector 3 prevents the centering element 21 during the screwing of the tensioning element 16 into the housing 2 of the nozzle holder 1.
- the clamping element 16 is so far screwed into the housing bore 6 until the lower end face of the nozzle holder 1 on Collar 5 of the injector 3 is applied.
- the collar 5 is pressed against the annular surface 9, so that the injection nozzle 3 through the nozzle holder 1 in the housing 2 in its installed position is held permanently.
- Support element 20 designed as a worm spring lies in recesses 18 or 19 of clamping element 16 and nozzle holder 1 and supports the nozzle holder 1 relatively to the clamping element 16.
- FIG. 1.1 shows details of a support element configured according to the invention removable for assembly between nozzle holder and clamping element.
- the support element 20 is preferably designed as a worm spring, the individual turns of which 26 are formed adjacent to each other in block length.
- the support member 20 is in the Diameter 25 of only a few millimeters, preferably 2 mm, and can be made accordingly assembled to form an endless support element 20 in the form of a ring be shaped.
- the open ends 27 of the clamping element cut into the installation length 20 suspended in a suitable manner or in any other way with each other connected.
- a support element 20 configured in this way has a radial extensibility on, which is a simple sliding of a support element procured as an endless ring 28 20 allowed on the nozzle holder 1.
- FIGS. 2.1 and 2.2 The representation according to FIGS. 2.1 and 2.2 is an insertion of a device designed according to the invention Support element to be removed through a hole on the circumference of a clamping element.
- this is as a worm spring, which has a front end 33 and a rear end 34.
- the front end 33 of the clamping element, which is made up to the appropriate length 20 is in the insertion direction 29 in a from the key side 31 of the clamping element 16 extending insertion opening 30 stirred.
- the leading end 33 passes one Channel 32, between the nozzle holder 1 and clamping element 16 through each of these trained recesses or recesses 18 and 19 is limited.
- Figures 3.1 and 3.2 is a completely formed in one of two recesses Remove the inserted support element.
- the rear one is by means of an insertion mandrel End 34 of the support element 20 designed as a worm spring, entirely through the insertion opening 30 inserted into the insertion channel 32, which of the recesses 18 and 19 is annularly limited on the nozzle holder 1 or on the tensioning element 16.
- the front end 33 of the worm spring Support element 20 and its rear end 34 a free space 35.
- the individual turns 26 of the spiral-shaped support element 20 are adjacent to each other in block length so that a uniform support effect of the nozzle holder 1 in the clamping element 16, be it a clamping screw or be it a clamping nut, can be achieved.
- the support element Due to the axial forces occurring during screwing, the support element, the only a radial deformability in the circumferential direction related to the nozzle body 1 inherent, in the recesses 18 and 19 of the nozzle holder 1 and clamping element 16th pressed.
- FIG. 4 shows a worm spring designed as a wrapped, reinforced support element.
- the illustration according to FIG. 4 shows that the support element 20 is annular curved portion is formed, the front end 33 and the rear end 34th are oriented by a distance 36 from one another.
- the variant of the support element 4 comprises a support ring 37 made of a wire material, on its peripheral surface 38, the individual turns 26 of an outer winding 41 abut each other.
- the winding of the outer winding 41 on the peripheral surface 38 of the Support ring 37 in the area of the front end 33 and the rear end 34 is selected so that recesses 39 of the front end 33 and recesses 40 at the rear end 34th such as when the front end 33 is moved towards one another onto the rear end 34 or in reverse direction, just interlock.
- the outer winding 41 is preferably made of a metallic material with a diameter 42 wound, the individual turns 26 of the outer winding 41 touching abut each other.
- the outer winding which acts as a support ring 37 41 receiving wire ring formed in a diameter 43.
- the total diameter the arrangement, a support ring 37 and an outer winding received thereon 41, is identified by reference numeral 25 in FIG. 4.
- Reference numeral 44 gives the joint of the open ends 33 and 34 respectively in the embodiment variant Figure 4 shown, comprising a support ring 37 comprising support element 20, i.e.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
- Figur 1
- eine Düsenhalter/Einspritzdüsenanordnung im Längsschnitt,
- Figur 1.1
- Details eines erfindungsgemäß ausgebildeten Stützelementes zur Montage zwischen Düsenhalter und Spannelement,
- Figuren 2.1 und 2.2
- das Einschieben eines erfindungsgemäß ausgebildeten Stützelementes durch eine Bohrung am Umfang eines Spannelementes und
- Figuren 3.1 und 3.2
- ein vollständig in einen von zwei Einstichen gebildeten Kanal eingeführtes Stützelement und
- Figur 4
- eine als umwickeltes, verstärktes Stützelement ausgebildete Wurmfeder.
- 1
- Düsenhalter
- 2
- Gehäuse (Brennraumwand)
- 3
- Einspritzdüse
- 4
- Düsenkegel
- 5
- ringförmiger Bund
- 6
- Gehäusebohrung
- 7
- Längsschlitz
- 8
- Innengewinde
- 9
- Ringfläche
- 10
- Düsenhaltergewinde
- 11
- Düsenhalterkopf
- 12
- Ablaufbohrung
- 13
- Querschnittserweiterung
- 14
- Strömungsgleichrichter
- 15
- Umfangsschlitz
- 16
- Spannelement
- 17
- Außengewinde
- 18
- Ausnehmung Düsenhalter
- 19
- Ausnehmung Spannschraube
- 20
- Stützelement
- 21
- Zentrierelement
- 22
- Zulaufbohrung
- 23
- Scheibe
- 24
- Federelement
- 25
- Durchmesser Stützelement
- 26
- Windung
- 27
- offenes Ende
- 28
- Stützelement in Ringform
- 29
- Einführrichtung
- 30
- Einführöffnung
- 31
- Schlüsselseite
- 32
- Kanal
- 33
- vorderes Ende
- 34
- hinteres Ende
- 35
- Freiraum
- 36
- Abstand der Enden 33, 34
- 37
- Stützring
- 38
- Umfangsfläche
- 39
- Ausnehmung vorderes Ende 33
- 40
- Ausnehmung hinteres Ende 34
- 41
- Außenwicklung
- 42
- Durchmesser Außenwicklung
- 43
- Durchmesser Stützring
- 44
- Stoßstelle Stützring
Claims (13)
- Düsenhalter zur Fixierung einer Einspritzdüse (3) in einer Bohrung (6) eines Gehäuses (2), wobei der Düsenhalter (1) über ein Spannelement (16) mit dem Gehäuse (2) verbunden wird und zwischen Düsenhalter (1) und dem Spannelement (16) ein Stützelement (20) vorgesehen ist, dadurch gekennzeichnet, daß das Stützelement (20) eine spiralfederförmig ausgebildete Wicklung (41) umfaßt.
- Düsenhalter gemäß Anspruch 1, dadurch gekennzeichnet, daß das Stützelement (20) in einem vom Düsenhalter (1) und vom Spannelement (16) begrenzten Kanal (32) aufgenommen ist.
- Düsenhalter gemäß Anspruch 2, dadurch gekennzeichnet, daß der Kanal (32) von einer Ausnehmung (18) am Düsenhalter (1) und von einer Ausnehmung (19) am Spannelement (16) begrenzt ist.
- Düsenhalter gemäß Anspruch 1, dadurch gekennzeichnet, daß Windungen (26) der Wicklung (41) in Blocklänge gewickelt aneinanderliegen.
- Düsenhalter gemäß Anspruch 1, dadurch gekennzeichnet, daß das Stützelement (20) als endlose Wurmfeder (28) ausgebildet ist.
- Düsenhalter gemäß Anspruch 1, dadurch gekennzeichnet, daß das Stützelement (20) als Wurmfeder (28) ausgebildet ist, welche ein vorderes Ende (33) und ein hinteres Ende (34) aufweist.
- Düsenhalter gemäß Anspruch 1, dadurch gekennzeichnet, dass das Stützelement (20) einen Stützring (37) umfaßt, welcher die Wicklung (41) aufnimmt.
- Düsenhalter gemäß Anspruch 7, dadurch gekennzeichnet, dass der Stützring (37) geteilt ausgebildet ist und auf seine Umfangsfläche (38) ein vorderes Ende (33) und ein hinteres Ende (34) der Wicklung (41) einander gegenüberliegend ausgebildet sind.
- Düsenhalter gemäß Anspruch 7, dadurch gekennzeichnet, dass die Enden (33, 34) der Wicklung (41) am Stützring (37) zueinander komplementär geformte Ausnehmungen (39, 40) definieren.
- Düsenhalter gemäß Anspruch 6, dadurch gekennzeichnet, daß das Spannelement (16) eine Einführöffnung (29) für ein vorderes Ende (33) des Stützelementes (20) umfaßt.
- Düsenhalter gemäß Anspruch 6, dadurch gekennzeichnet, daß nach vollständigem Einführen des Stützelementes (20) in den Kanal (32) das vordere Ende (33) und das hintere Ende (34) des Stützelementes (20) einen Freiraum (35) begrenzen.
- Düsenhalter gemäß Anspruch 1, dadurch gekennzeichnet, daß das Stützelement (20) mit einem Durchmesser (25) zwischen 1 und 10 mm ausgebildet ist.
- Düsenhalter gemäß Anspruch 12, dadurch gekennzeichnet, daß der Durchmesser (25) des Stützelementes (20) bevorzugt 2 mm beträgt.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10111481 | 2001-03-09 | ||
DE10111481 | 2001-03-09 | ||
DE10205088A DE10205088A1 (de) | 2001-03-09 | 2002-02-07 | Düsenhalterbefestigung |
DE10205088 | 2002-02-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1239147A2 true EP1239147A2 (de) | 2002-09-11 |
EP1239147A3 EP1239147A3 (de) | 2008-02-20 |
Family
ID=26008731
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02005421A Withdrawn EP1239147A3 (de) | 2001-03-09 | 2002-03-08 | Düsenhalterbefestigung |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP1239147A3 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014090475A1 (de) * | 2012-12-10 | 2014-06-19 | Robert Bosch Gmbh | Anordnung für eine brennstoffeinspritzanlage mit einer komponente und einem elastisch verformbaren entkoppelelement |
US10060401B2 (en) | 2016-04-22 | 2018-08-28 | Caterpillar Inc. | Fuel inlet filter for fuel injectors |
CN115523069A (zh) * | 2021-06-24 | 2022-12-27 | 曼能源解决方案公司-德国曼能源解决方案欧洲股份公司之分公司 | 燃料阀组件 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19701879A1 (de) | 1997-01-21 | 1998-07-23 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2308261A1 (de) * | 1973-02-20 | 1974-08-22 | Bosch Gmbh Robert | Kraftstoffeinspritzduese |
FR2762051B1 (fr) * | 1997-04-10 | 1999-05-21 | Peugeot | Dispositif de fixation d'un injecteur de carburant sur une culasse de moteur a combustion interne |
FR2763379B1 (fr) * | 1997-05-16 | 1999-07-16 | Renault | Bride de fixation d'un injecteur |
-
2002
- 2002-03-08 EP EP02005421A patent/EP1239147A3/de not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19701879A1 (de) | 1997-01-21 | 1998-07-23 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014090475A1 (de) * | 2012-12-10 | 2014-06-19 | Robert Bosch Gmbh | Anordnung für eine brennstoffeinspritzanlage mit einer komponente und einem elastisch verformbaren entkoppelelement |
US10060401B2 (en) | 2016-04-22 | 2018-08-28 | Caterpillar Inc. | Fuel inlet filter for fuel injectors |
CN115523069A (zh) * | 2021-06-24 | 2022-12-27 | 曼能源解决方案公司-德国曼能源解决方案欧洲股份公司之分公司 | 燃料阀组件 |
EP4108906A1 (de) * | 2021-06-24 | 2022-12-28 | Man Energy Solutions, branch of Man Energy Solutions SE, Germany | Brennstoffventilanordnung |
Also Published As
Publication number | Publication date |
---|---|
EP1239147A3 (de) | 2008-02-20 |
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