EP1258629A2 - Verfahren zur Herstellung von Dichtungsbereichen für Bauteile von Speichereinspritzvorrichtungen sowie Bauteilen mit derartigem Dichtungsbereich - Google Patents
Verfahren zur Herstellung von Dichtungsbereichen für Bauteile von Speichereinspritzvorrichtungen sowie Bauteilen mit derartigem Dichtungsbereich Download PDFInfo
- Publication number
- EP1258629A2 EP1258629A2 EP02100470A EP02100470A EP1258629A2 EP 1258629 A2 EP1258629 A2 EP 1258629A2 EP 02100470 A EP02100470 A EP 02100470A EP 02100470 A EP02100470 A EP 02100470A EP 1258629 A2 EP1258629 A2 EP 1258629A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- sealing
- component
- line
- areas
- rail
- 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- Withdrawn
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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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
- F02M55/025—Common rails
-
- 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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/004—Joints; Sealings
- F02M55/005—Joints; Sealings for high pressure conduits, e.g. connected to pump outlet or to injector inlet
Definitions
- the present invention relates to a method for manufacturing of sealing areas for components of accumulator injectors and components with such manufactured Sealing areas and sealing arrangements between the component the storage injector and a line.
- Accumulator injectors e.g. Common rail systems
- the Accumulator injection device meet various requirements.
- memory injectors of this type are being used increasingly asked the task, significantly higher To provide system pressures above 1500 bar.
- These high Pressure requirements place great demands on the components used Loads regarding their operational and durability represents a major problem in particular the tightness the interfaces between the components of the storage injection devices and the lines connecting the components
- the repeated disconnection and connection hides of these highly stressed connections between the components and the management significant dangers of damage or impairment the sealing points on the connections.
- a method for producing Sealing areas for components of accumulator injectors which is a step of pressure forming of the sealing area by means of a stamp, in order a local, permanent increase in strength at the sealing area to generate the component.
- the method according to the invention can increase the hardness of the sealing area in one step provide.
- the invention does not have to the entire component is made of a high-strength material or the entire component of a strength-increasing Undergo post-treatment, but there will be only local strength increases at the sealing areas carried out. This can reduce manufacturing costs both from a procedural point of view and in terms of the cost of materials for memory injector components be significantly reduced.
- the component itself must securely supported and fixed during pressure forming to ensure an exact and coaxial compression.
- the hardness of the sealing area will vary, creating an optimal one Hardness can be set for the respective sealing area can. It is also easily possible that different Sealing areas on a component have different hardnesses have, since the forming parameters are changed quickly can.
- Components can thus be produced using the method according to the invention are produced by accumulator injectors, which also the future higher system pressures over 1500 Resist bar and secure seals on connections between enable the component and cables. According to the invention can thus reduce the cost of the components of accumulator injection systems can be significantly reduced.
- Pressure forming is preferably carried out as cold forming. This allows the method according to the invention to be particularly effective be provided inexpensively.
- the sealing areas on bores of the component are preferred arranged for connecting cables.
- component / line must on the one hand a high level of tightness can be guaranteed, which is ensured by the inventive Procedure is guaranteed, on the other hand must tightness even after repeated opening or reconnection the connection between the component and the line be tight.
- the sealing areas are tapered in particular conical. This can be an enlarged Sealing surface can be achieved, creating the seal becomes even safer.
- Stamp used which has a tapered guide mandrel having.
- the guide mandrel is used during pressure forming inserted into a hole in the component so that on the one hand the punch is centered with respect to the bore and on the other hand a closure of the bore due to the Prepressing process is prevented.
- the area simply formed around the bore as a sealing area are reduced without reducing the bore diameter.
- the high-strength stamp is a negative of corresponds to the respective sealing areas and accordingly is trained.
- the component of a storage injection device according to the invention with at least one according to the inventive method can be, for example Rail, a distributor, a high pressure pump or an injector his.
- the component preferably has a plurality of sealing regions on, the sealing areas each different Exhibit hardness. This can be done by the method according to the invention easily provided, for example by Exchange the stamp or change the forming parameters simple way different hardnesses on different sealing areas can be provided.
- a sealing arrangement between a line and a component of a storage injector provided.
- the sealing arrangement is thereby formed by a pair of sealing surfaces, the Sealing surface of the component according to the inventive method is hardened and greater hardness than a sealing surface the line has.
- the sealing surface of the line is particularly preferred in the Assembly of the line to the component is plastically deformed, because the hardness of the pipe sealing surface is less than the hardness is the component sealing surface. This can be a particularly safe and tight seal achieved between the two parts become.
- the line is preferably by means of a union nut attached to the component.
- the sealing surface pairing according to the invention can be between a rail and a line, a distributor and one Line, a high pressure pump and a line and / or one Injector and a line can be formed.
- FIGS. 1 to 3 Embodiment described according to the present invention.
- Figure 1 is a component of a memory injection device exemplified a rail 1, which is particularly for Distribution of the fuel to the individual injectors serves.
- the rail 1 is a cylindrical body with a predetermined internal volume, of which several lines 2 go to connections 5 for the injectors. Still is a line 2 from a connection 6 for a high pressure pump provided the rail with fuel under pressure provided.
- the lines 2 are each by means of union nuts 7 attached to the rail.
- Figure 1 are the sealing areas occurring on the rail marked with arrows. As shown in Figure 1, are the sealing areas between the rail 1 and the lines 2 or the sensor 15.
- FIGS. 2 and 3 the invention is shown schematically Process for the production of a sealing area shown.
- the rail 1 several holes 8 are provided through which the fuel can flow from or into lines 2.
- the holes 8 are provided on projecting areas 16 on the rail and point a conically widening area on the outside of the rail on, which serves as a sealing surface 9.
- On the outside the protruding areas 16 is in each case an external thread 11 provided, which for screwing on the union nuts 3 serves.
- the method according to the invention for producing sealing areas with increased strength is by means of a Stamp 12 executed, on which a guide pin 13 is arranged is.
- the stamp 12 has a stamp surface 14 which, as a corresponding negative to the sealing surface 9 is formed (see FIG. 2).
- the stamp 12 is now in Direction of arrow F in the bore 8 in the rail, wherein the guide pin 13, which is also slightly conical is inserted into the bore 8 for centering.
- the guide pin 13 serves in addition to the guide the tool also to prevent the hole from becoming 8 close due to the pressure deformation on the sealing surfaces 9 can.
- the Rail 1 must be during the upsetting process supported for the manufacture of the sealing area and be fixed to an exact and coaxial compression sure.
- the sealing area 10 on the rail 1 after implementation the procedure is shown schematically.
- Other areas of the rail 1 are not compressed.
- this is only a local, permanent one Strength increase provided on the sealing surfaces, whereas other areas of the rail 1 remain untreated.
- only the positions at the Accumulator injection components are hardened, which act as sealing areas 10 are used. This can be done by a simple Pressure forming can be achieved by means of a stamp 12, so that the method according to the invention is particularly inexpensive is.
- A can be used for the storage injection component cheaper material than used in the prior art become.
- the respective hardness of the sealing surfaces 9 can depending on the forming parameters (forming force, forming speed, Lubricant, temperature) for each hole can be set separately so that, if desired, different sealing properties can be obtained.
- the seal according to the invention is particularly thereby improves that the correspondingly designed for the sealing surface 9 Cable end is less hard than the sealing area 10 has. This can help with the attachment the line 2 on the rail 1 is at least partially plastic Deformation on the sealing area of line 2 take place, whereby the sealing becomes even more secure.
- targeted hardening according to the invention can only be carried out precisely defined and particularly vulnerable interfaces of the Component are carried out. This allows cheaper Starting materials are used for the component and it is not a costly thermal treatment of the whole Component necessary.
- the seal according to the invention enables sufficient sealing in the event of repeated use Attaching and detaching the cables to the component.
- a method for producing Sealing areas 10 for components 1 of accumulator injectors provided.
- the process includes the Step of pressure forming the sealing area 10 by means of a stamp 12 to provide a local, permanent increase in strength to produce at the sealing area 10.
- a Component with a sealing region 10 produced in this way and a sealing arrangement between component 1 and one Line 2 provided.
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 schematische, perspektivische Ansicht eines Rails mit verschiedenen Verbindungsbereichen, an welchen Dichtflächen ausgebildet sind,
- Figur 2
- eine schematische Schnittdarstellung des Dichtungsbereichs sowie eines Stempels zum Durchführen des erfindungsgemäßen Verfahrens und
- Figur 3
- eine schematische Schnittansicht des Dichtungsbereichs des Bauteils nach dem Durchführen des erfindungsgemäßen Verfahrens.
Claims (13)
- Verfahren zur Herstellung eines Dichtungsbereichs (10) für ein Bauteil (1) einer Speichereinspritzvorrichtung umfassend den Schritt des Druckumformens des Dichtungsbereichs (10) mittels eines Stempels (12), um eine lokale, bleibende Festigkeitssteigerung am Dichtungsbereich (10) zu erzeugen.
- Verfahren nach Anspruch 1 dadurch gekennzeichnet, dass das Druckumformen als Kaltumformen durchgeführt wird.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Dichtungsbereiche (10) an Bohrungen (8) des Bauteils (1) für das Anschließen von Leitungen (2) angeordnet sind.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Dichtungsbereiche (10) als sich verjüngende Bereiche, insbesondere als konische Bereiche, ausgebildet sind.
- Verfahren nach einem der Ansprüche 1 bis 4, , dadurch gekennzeichnet, dass der Stempel (12) zum Durchführen des Druckumformens einen sich verjüngenden Führungsdorn (13) aufweist, welcher beim Druckumformen in die Bohrung (8) des Bauteils (1) eingeführt wird.
- Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das Bauteil (1) der Speichereinspritzvorrichtung ein Rail, ein Verteilerstück, eine Hochdruckpumpe oder ein Injektor ist.
- Bauteil für eine Speichereinspritzvorrichtung mit mindestens einem gemäß dem Verfahren nach einem der Ansprüche 1 bis 5 hergestellten Dichtungsbereich (10).
- Bauteil nach Anspruch 7, dadurch gekennzeichnet, dass das Bauteil (1) mehrere Dichtungsbereiche (10) aufweist, wobei die Dichtungsbereiche (10) unterschiedliche Härten aufweisen.
- Bauteil nach Anspruch 7 oder 8, dadurch gekennzeichnet, dass das Bauteil der Speichereinspritzvorrichtung ein Rail, ein Verteilerstück, eine Hochdruckpumpe oder ein Injektor ist.
- Dichtungsanordnung zwischen einer Leitung (2) und einem Bauteil (1) einer Speichereinspritzvorrichtung, dadurch gekennzeichnet, dass die Dichtungsanordnung durch eine Dichtflächenpaarung ausgebildet ist, wobei die Dichtfläche (9) des Bauteils (1) durch Anwendung des Verfahrens nach einem der Ansprüche 1 bis 6 eine größere Härte als eine Dichtfläche der Leitung aufweist.
- Dichtungsanordnung nach Anspruch 10, dadurch gekennzeichnet, dass die Dichtfläche der Leitung (2) bei der Montage der Leitung (2) an das Bauteil (1) plastisch verformt wird.
- Dichtungsanordnung nach Anspruch 10 oder 11, dadurch gekennzeichnet, dass die Leitung (2) mittels einer Überwurfmutter (3) an dem Bauteil (1) der Speichereinspritzvorrichtung befestigt ist.
- Dichtungsanordnung nach einem der Ansprüche 10 bis 12, dadurch gekennzeichnet, dass die Dichtflächenpaarung zwischen einem Rail und einer Leitung, einem Verteilerstück und einer Leitung, einer Hochdruckpumpe und einer Leitung und/oder einem Injektor und einer Leitung ausgebildet ist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10123649 | 2001-05-15 | ||
| DE10123649 | 2001-05-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1258629A2 true EP1258629A2 (de) | 2002-11-20 |
| EP1258629A3 EP1258629A3 (de) | 2004-03-10 |
Family
ID=7684884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02100470A Withdrawn EP1258629A3 (de) | 2001-05-15 | 2002-05-10 | Verfahren zur Herstellung von Dichtungsbereichen für Bauteile von Speichereinspritzvorrichtungen sowie Bauteilen mit derartigem Dichtungsbereich |
Country Status (1)
| Country | Link |
|---|---|
| EP (1) | EP1258629A3 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022083934A1 (de) * | 2020-10-19 | 2022-04-28 | Robert Bosch Gmbh | Fluidverteiler für eine einspritzanlage und einspritzanlage für gemischverdichtende, fremdgezündete brennkraftmaschinen |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE944254C (de) * | 1953-09-01 | 1956-06-14 | Maschb G M B H | Oberflaechen- und Tiefenhaerten von Bohrungen in austenitischen Staehlen |
| DE3801703C1 (de) * | 1988-01-21 | 1989-02-09 | Juergen Dipl.-Ing. 8402 Neutraubling De Guido | |
| GB2322819B (en) * | 1997-03-03 | 2000-12-13 | Usui Kokusi Sangyo Kaisha Ltd | Method for improving fatique strength due to repeated pressure at branch hole part in member for high pressure fluid. |
| US6263862B1 (en) * | 1998-03-02 | 2001-07-24 | Usui Kokusai Sangyo Kaisha Limited | Common rail and method of manufacturing the same |
| DE19923951A1 (de) * | 1999-05-25 | 2000-11-30 | Delphi Tech Inc | Verteilerleiste für ein Kraftstoffeinspritzsystem |
-
2002
- 2002-05-10 EP EP02100470A patent/EP1258629A3/de not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022083934A1 (de) * | 2020-10-19 | 2022-04-28 | Robert Bosch Gmbh | Fluidverteiler für eine einspritzanlage und einspritzanlage für gemischverdichtende, fremdgezündete brennkraftmaschinen |
| CN116348672A (zh) * | 2020-10-19 | 2023-06-27 | 罗伯特·博世有限公司 | 用于喷射设备的流体分配器和用于混合压缩的外源点火式内燃机的喷射设备 |
| US12018634B2 (en) | 2020-10-19 | 2024-06-25 | Robert Bosch Gmbh | Fluid distributor for an injection system and injection system for mixture-compressing, externally ignited internal combustion engines |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1258629A3 (de) | 2004-03-10 |
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