DE10241445A1 - Fuel injection control valve has first valve component which with regard to HP flow direction is installed before first sealing face and second valve component with regard to LP flow direction is located after second sealing face - Google Patents
Fuel injection control valve has first valve component which with regard to HP flow direction is installed before first sealing face and second valve component with regard to LP flow direction is located after second sealing face Download PDFInfo
- Publication number
- DE10241445A1 DE10241445A1 DE2002141445 DE10241445A DE10241445A1 DE 10241445 A1 DE10241445 A1 DE 10241445A1 DE 2002141445 DE2002141445 DE 2002141445 DE 10241445 A DE10241445 A DE 10241445A DE 10241445 A1 DE10241445 A1 DE 10241445A1
- Authority
- DE
- Germany
- Prior art keywords
- valve
- valve body
- sealing surface
- flow direction
- sealing face
- 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- Withdrawn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
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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0003—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure
- F02M63/0005—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure using valves actuated by fluid pressure
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Die Erfindung bezieht sich auf ein Kraftstoffsteuerventil für eine Einspritzdüse mit einem Hochdruckzuflusskanal, einem Hochdruckabflusskanal, einem Niederdruckabflusskanal und einem Steuerstößel mit einer, zwei Endlagen aufweisenden Ventilnadel mit einem, einer ersten Dichtfläche zugeordneten ersten Ventilkörper und einem, einer zweiten Dichtfläche zugeordneten zweiten Ventilkörper, wobei, mit Bezug zur Strömungsrichtung, die erste Dichtfläche nach dem Hochdruckzuflusskanal und vor dem Hochdruckabflusskanal angeordnet ist und die zweite Dichtfläche nach dem Hochdruckabflusskanal und vor dem Niederdruckabflusskanal vorgesehen ist.The invention relates to a Fuel control valve for an injection nozzle with a high pressure feed channel, a high pressure drain channel, a Low pressure drainage channel and a control plunger with one, two end positions having valve needle with a, a first sealing surface associated first valve body and one, a second sealing surface associated second valve body, wherein, with respect to the flow direction, the first sealing surface after the high pressure inlet channel and before the high pressure drainage channel is arranged and the second sealing surface after the high-pressure drainage channel and is provided in front of the low pressure drainage channel.
Es ist bereits eine Kraftstoffeinspritzvorrichtung
aus der
Der Erfindung liegt die Aufgabe zugrunde, ein Kraftstoffsteuerventil derart auszubilden und anzuordnen, dass ein einfacher und kostengünstiger Aufbau gewährleistet ist.The invention is based on the object Fuel control valve in such a form and arrange that a simple and inexpensive construction guaranteed is.
Gelöst wird die Aufgabe erfindungsgemäß dadurch, dass der erste Ventilkörper mit Bezug zu einer Hochdruckströmungsrichtung vor der ersten Dichtfläche angeordnet ist und der zweite Ventilkörper mit Bezug zu einer Niederdruckströmungsrichtung nach der zweiten Dichtfläche vorgesehen ist, wobei der Steuerstößel niederdruckseitig unmittelbar am zweiten Ventilkörper angeordnet ist. Hierdurch wird erreicht, dass durch eine einfache Verjüngung des Ventildurchflussquerschnitts zwischen den beiden Dichtflächen der geschlossene Zustand des Kraftstoffsteuerventils gewährleistet ist. Durch die entsprechende Verbreiterung des Ventildurchflussquerschnitts im Bereich der zweiten Dichtfläche wird die zweite Dichtfläche gebildet, die in der Durchflussstellung des Kraftstoffsteuerventils mit dem zweiten Ventilkörper in Kontakt steht. Daneben kann durch die erfindungsgemäße Anordnung des Steuerstößels auf der Niederdruckseite die notwendige Dichtung zum Kraftstoffsteuerventilgehäuse weniger aufwendig gestaltet sein.The problem is solved according to the invention by that the first valve body with respect to a high-pressure flow direction in front of the first sealing surface is arranged and the second valve body with respect to a low pressure flow direction after the second sealing surface is provided, wherein the control plunger low pressure side directly on second valve body is arranged. This ensures that by a simple Rejuvenation of the Valve flow cross section between the two sealing surfaces of the closed state of the fuel control valve ensures is. By the corresponding broadening of the valve flow cross section in the area of the second sealing surface becomes the second sealing surface formed in the flow position of the fuel control valve with the second valve body in contact. In addition, by the arrangement according to the invention of the control ram the low pressure side the necessary seal to the fuel control valve body less be elaborately designed.
Hierzu ist es vorteilhaft, dass die Ventilnadel zweiteilig ausgebildet ist bzw. aus einem ersten Ventilkörper und einem damit form- und/oder kraftschlüssig verbundenen zweiten Ventilkörper besteht, wobei der zweite Ventilkörper und der Steuerstößel materialidentisch und/oder einteilig ausgebildet sind. Somit kann das Kraftstoffsteuerventilgehäuse im Wesentlichen einteilig ausgebildet sein, während die Ventilnadel montiert wird.For this it is advantageous that the Valve needle is formed in two parts or from a first valve body and a form-fitting and / or non-positively connected second valve body, wherein the second valve body and the control ram material identical and / or formed in one piece. Thus, the fuel control valve housing substantially be formed in one piece while the valve needle is mounted.
Eine zusätzliche Möglichkeit ist gemäß einer Weiterbildung, dass die Ventilnadel innerhalb eines Ventilgehäuses verschiebbar gelagert ist, wobei an der dem Steuerstößel gegenüberliegenden Seite der Ventilnadel ein als Schiebelager ausge bildetes Axiallager für die Ventilnadel vorgesehen ist. Die Anordnung des Schiebelagers innerhalb des Kraftstoffsteuerventilgehäuses im Hochdruckbereich gewährleistet eine einfache Ausbildung des Lagersitzes, da keine Hochdruckdichtungen realisiert werden müssen.An additional possibility is according to a development, that the valve needle is displaceably mounted within a valve housing is, being at the opposite of the control plunger Side of the valve needle as a sliding bearing out formed thrust bearing for the Valve needle is provided. The arrangement of the sliding bearing inside of the fuel control valve body in the high pressure area ensures a simple design of the bearing seat, as no high pressure seals must be realized.
Ferner ist es vorteilhaft, dass das Axiallager und das Ventilgehäuse materialidentisch und/oder einteilig ausgebildet sind, wobei das Ventilgehäuse eine Wandstärke zwischen 1 mm und 4 mm, insbesondere zwischen 1,5 mm und 2,5 mm aufweist.Furthermore, it is advantageous that the Thrust bearing and the valve body are formed material identical and / or in one piece, wherein the Valve housing one Wall thickness between 1 mm and 4 mm, in particular between 1.5 mm and 2.5 mm having.
Gemäß einer bevorzugten Ausführungsform der erfindungsgemäßen Lösung ist schließlich vorgesehen, dass die erste Dichtfläche, die zweite Dichtfläche, der erste Ventilkörper und der zweite Ventilkörper kegelförmig ausgebildet sind, wobei der Kegelwinkel des Ventilkörpers kleiner ist, als der Kegelwinkel der jeweiligen Dichtfläche. Somit ergibt sich eine bestimmte Endlage der Ventilnadel in beiden Endlagen.According to a preferred embodiment of inventive solution in the end provided that the first sealing surface, the second sealing surface, the first valve body and the second valve body conical are formed, wherein the cone angle of the valve body smaller is, as the cone angle of the respective sealing surface. This results in a certain End position of the valve needle in both end positions.
Vorteilhaft ist es auch, dass der erste Ventilkörper und/oder der zweite Ventilkörper zumindest teilweise kugelförmig ausgebildet ist.It is also advantageous that the first valve body and / or the second valve body at least partially spherical is trained.
Zudem ist es vorteilhaft, dass mindestens eine Vorspannfeder für den Steuerstößel vorgesehen ist, die innerhalb und/oder außerhalb des Ventilgehäuses angeordnet ist. Je nach Beanspruchung kann die Vorspannfeder leichter ausgewechselt bzw. überprüft werden.In addition, it is advantageous that at least one Preloading spring for the control tappet is provided the inside and / or outside of the valve housing is arranged. Depending on the load, the preload spring can be lighter be replaced or checked.
Weitere Vorteile und Einzelheiten der Erfindung sind in den Patentansprüchen und in der Beschreibung erläutert und in den Figuren dargestellt.Further advantages and details The invention are in the claims and in the description explained and shown in the figures.
Dabei zeigen:Showing:
Das in
Die Ventilnadel
Gemäß
Die Ventilnadel
Die Ventilkörper
In der in
Die Einspritzdüse
Gemäß
Der zweite Ventilkörper
Der Steuerstößel
Im Gegensatz zu
- 11
- KraftstoffsteuerventilFuel control valve
- 1.11.1
- HochdruckzuflusskanalHigh pressure inlet channel
- 1.21.2
- HochdruckabflusskanalHigh-pressure discharge channel
- 1.31.3
- NiederdruckabflusskanalLow pressure drain channel
- 1.41.4
- erste Dichtflächefirst sealing surface
- 1.51.5
- zweite Dichtflächesecond sealing surface
- 1.61.6
- Ventilgehäusevalve housing
- 1.71.7
- Axiallagerthrust
- 2.12.1
- Ventilnadelvalve needle
- 2.22.2
- Steuerstößelcontrol tappet
- 2.32.3
- erster Ventilkörperfirst valve body
- 2.42.4
- zweiter Ventilkörpersecond valve body
- 2.52.5
- Vorspannfederbiasing spring
- 2.62.6
- Sitzflächeseat
- 2.6'2.6 '
- Sitzflächeseat
- 33
- Einspritzdüseinjection
- 3.13.1
- Düsennadelnozzle needle
- 3.23.2
- DüsennadelfederNozzle needle spring
- 3.33.3
- Austrittsöffnungoutlet opening
- 3.3'3.3 '
- Austrittsöffnungoutlet opening
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2002141445 DE10241445A1 (en) | 2002-09-06 | 2002-09-06 | Fuel injection control valve has first valve component which with regard to HP flow direction is installed before first sealing face and second valve component with regard to LP flow direction is located after second sealing face |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2002141445 DE10241445A1 (en) | 2002-09-06 | 2002-09-06 | Fuel injection control valve has first valve component which with regard to HP flow direction is installed before first sealing face and second valve component with regard to LP flow direction is located after second sealing face |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE10241445A1 true DE10241445A1 (en) | 2004-03-18 |
Family
ID=31724469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2002141445 Withdrawn DE10241445A1 (en) | 2002-09-06 | 2002-09-06 | Fuel injection control valve has first valve component which with regard to HP flow direction is installed before first sealing face and second valve component with regard to LP flow direction is located after second sealing face |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE10241445A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119957399A (en) * | 2024-09-05 | 2025-05-09 | 中国航发动力股份有限公司 | A precision assembled valve core and valve body structure and processing method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3680782A (en) * | 1969-10-24 | 1972-08-01 | Sopromi Soc Proc Modern Inject | Electromagnetic injectors |
| DE19701879A1 (en) * | 1997-01-21 | 1998-07-23 | Bosch Gmbh Robert | Fuel injection device for internal combustion engines |
| DE19744723A1 (en) * | 1997-10-10 | 1999-04-15 | Bosch Gmbh Robert | Fuel injector |
| EP0967388A2 (en) * | 1998-06-22 | 1999-12-29 | Diesel Ricerche S.p.A. | Improved injection device in diesel engines of the common-rail type |
-
2002
- 2002-09-06 DE DE2002141445 patent/DE10241445A1/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3680782A (en) * | 1969-10-24 | 1972-08-01 | Sopromi Soc Proc Modern Inject | Electromagnetic injectors |
| DE19701879A1 (en) * | 1997-01-21 | 1998-07-23 | Bosch Gmbh Robert | Fuel injection device for internal combustion engines |
| DE19744723A1 (en) * | 1997-10-10 | 1999-04-15 | Bosch Gmbh Robert | Fuel injector |
| EP0967388A2 (en) * | 1998-06-22 | 1999-12-29 | Diesel Ricerche S.p.A. | Improved injection device in diesel engines of the common-rail type |
Non-Patent Citations (2)
| Title |
|---|
| JP 61008463 A.,In: Patent Abstracts of Japan * |
| JP 61008463 A.,In: Patent Abstracts of Japan; |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119957399A (en) * | 2024-09-05 | 2025-05-09 | 中国航发动力股份有限公司 | A precision assembled valve core and valve body structure and processing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
| 8127 | New person/name/address of the applicant |
Owner name: DAIMLERCHRYSLER AG, 70327 STUTTGART, DE |
|
| 8127 | New person/name/address of the applicant |
Owner name: DAIMLER AG, 70327 STUTTGART, DE |
|
| 8120 | Willingness to grant licenses paragraph 23 | ||
| 8141 | Disposal/no request for examination |