DE102004061031A1 - High-pressure fuel injection device for an internal combustion engine - Google Patents
High-pressure fuel injection device for an internal combustion engine Download PDFInfo
- Publication number
- DE102004061031A1 DE102004061031A1 DE200410061031 DE102004061031A DE102004061031A1 DE 102004061031 A1 DE102004061031 A1 DE 102004061031A1 DE 200410061031 DE200410061031 DE 200410061031 DE 102004061031 A DE102004061031 A DE 102004061031A DE 102004061031 A1 DE102004061031 A1 DE 102004061031A1
- Authority
- DE
- Germany
- Prior art keywords
- sealing element
- pressure fuel
- connecting piece
- internal combustion
- combustion engine
- 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- Withdrawn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
- 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
- F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
-
- 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
- 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
-
- 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
- F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
- F02M2200/803—Fuel injection apparatus manufacture, repair or assembly using clamp elements and fastening means; e.g. bolts or screws
-
- 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
- F02M2200/858—Mounting of fuel injection apparatus sealing arrangements between injector and engine
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Die Erfindung betrifft eine Hochdruck-Kraftstoffeinspritzvorrichtung (1) für eine Brennkraftmaschine, insbesondere für eine direkteinspritzende, fremdgezündete Brennkraftmaschine, mit wenigstens einer einendseitig mit einem Steckabschnitt (14) in einem Anschlussstutzen (6) eines Kraftstoff-Hochdruckspeichers (2) und anderendseitig in einer Sitzbohrung (10) eines Zylinderkopfes (8) der Brennkraftmaschine gehaltenen Einspritzdüse (4), wobei dem Steckabschnitt (14) und dem Anschlussstutzen (6) wenigstens ein Dichtelement (16) radial zwischengeordnet ist. DOLLAR A Die Erfindung sieht vor, dass das Dichtelement (16) in einer im Anschlussstutzen (6) ausgebildeten Ringkammer (18) aufgenommen ist, welche auf der vom Kraftstoff-Hochdruckspeicher (2) wegweisenden Seite durch eine das Dichtelement (16) hintergreifende Ringschulter (24) begrenzt ist.The invention relates to a high-pressure fuel injection device (1) for an internal combustion engine, in particular for a direct injection, spark ignition internal combustion engine, with at least one einendseitig with a plug portion (14) in a connecting piece (6) of a high-pressure fuel storage (2) and the other end in a seat bore (10) of a cylinder head (8) of the internal combustion engine held injection nozzle (4), wherein the plug portion (14) and the connecting piece (6) at least one sealing element (16) is arranged radially in between. DOLLAR A The invention provides that the sealing element (16) in a connecting piece (6) formed annular chamber (18) is received, which on the side facing away from the fuel high-pressure accumulator (2) by a side engaging the sealing element (16) annular shoulder ( 24) is limited.
Description
Die Erfindung geht aus von einer Hochdruck-Kraftstoffeinspritzvorrichtung für eine Brennkraftmaschine, insbesondere für eine direkt einspritzende, fremdgezündete Brennkraftmaschine, mit wenigstens einer einendseitig mit einem Steckabschnitt in einem Anschlussstutzen eines Kraftstoff-Hochdruckspeichers und anderendseitig in einer Sitzbohrung eines Zylinderkopfes der Brennkraftmaschine gehaltenen Einspritzdüse, wobei dem Steckabschnitt und dem Anschlussstutzen wenigstens ein Dichtelement radial zwischengeordnet ist, gemäß der Gattung von Anspruch 1.The The invention is based on a high-pressure fuel injection device for one Internal combustion engine, in particular for a direct injection, spark ignition Internal combustion engine, with at least one einendseitig with a Plug-in section in a connecting piece of a high-pressure fuel storage and anderendseitig in a seat bore of a cylinder head of the Internal combustion engine held injector, the plug section and the connecting piece at least one sealing element radially interposed is, according to the genus of claim 1.
Eine
gattungsgemäße Hochdruck-Kraftstoffeinspritzvorrichtung
ist aus der
Der vorliegenden Erfindung liegt demgegenüber die Aufgabe zugrunde, eine Hochdruck-Kraftstoffeinspritzvorrichtung der eingangs erwähnten Art derart weiter zu entwickeln, dass sie ein günstigeres Geräuschverhalten aufweist.Of the The present invention is based on the object, a High-pressure fuel injection device of the type mentioned in the beginning continue to develop that they have a more favorable noise behavior having.
Erfindungsgemäß wird diese Aufgabe durch die kennzeichnenden Merkmale von Anspruch 1 gelöst.According to the invention this Problem solved by the characterizing features of claim 1.
Vorteile der ErfindungAdvantages of the invention
Die Erfindung basiert auf dem Gedanken, das Dichtelement in einer im Anschlussstutzen ausgebildeten Ringkammer aufzunehmen, welche auf der vom Kraftstoff-Hochdruckspeicher weg weisenden Seite durch eine das Dichtelement hintergreifende Ringschulter begrenzt ist. Weil das Dichtelement nun nicht mehr im Steckabschnitt der Einspritzdüse, sondern am Anschlussstutzen aufgenommen ist, kann der Durchmesser des Steckabschnitts und damit die hydraulisch wirksame Fläche kleiner ausfallen. Dies resultiert in einer geringeren Einspannkraft der Einspritzdüse in der Sitzbohrung des Zylinderkopfs und damit einer nachgiebigeren Lagerung, was die Übertragung von Körperschall reduziert. Die eventuell auf das Dichtelement wirkende, aus dem im Rail herrschenden Druck resultierende Druckkraft kann dann von der Ringschulter aufgenommen werden, gegen welche sich das Dichtelement abstützt.The Invention is based on the idea of the sealing element in an im Socket trained annular chamber to record, which on the from the fuel high-pressure accumulator away side by a the sealing element engaging behind annular shoulder is limited. Because the sealing element no longer in the mating portion of the injector, but is received on the connection piece, the diameter of the plug-in section and thus the hydraulically effective area will be smaller. This results in a lower clamping force of the injector in the Seat bore of the cylinder head and thus a more flexible storage, what the transmission of structure-borne noise reduced. The possibly acting on the sealing element, from the in the rail prevailing pressure resulting pressure force can then from the annular shoulder are received against which the sealing element supported.
Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen der Erfindung möglich.By in the subclaims listed activities are advantageous developments and improvements of the invention possible.
Gemäß einer besonders zu bevorzugenden Ausführungsform ist das Dichtelement in axialer Richtung gesehen zwischen einem hochdruckspeicherseitigen Absatz des Anschlussstutzens und einem Stützring gehalten. Der Stützring sorgt für eine definierte Lage des Dichtelements in der Ringkammer und verhindert schwingungsbedingte Verlagerungen. Weiterhin kann er auch die Druckkräfte aufnehmen, welche daraus resultieren, dass das Dichtelement mit dem Druck im Rail beaufschlagt ist. Die Ringschulter wird vorzugsweise durch einen an der Stirnfläche des Anschlussstutzens angesetzten Ring gebildet.According to one particularly preferable embodiment is the sealing element seen in the axial direction between a high pressure accumulator side paragraph of the connecting piece and a support ring held. The support ring takes care of a defined position of the sealing element in the annular chamber and prevented vibration-related shifts. Furthermore, he can also absorb the pressure forces, which result from the fact that the sealing element with the pressure in Rail is acted upon. The annular shoulder is preferably through one on the face formed of the connecting piece attached ring.
Zeichnungendrawings
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt. In der Zeichnung zeigt die einzige Figur eine Querschnittsdarstellung eines Abschnitts einer Hochdruck-Kraftstoffeinspritzvorrichtung für direkt einspritzende, fremdgezündete Brennkraftmaschine gemäß einer bevorzugten Ausführungsform der Erfindung.One embodiment the invention is shown in the drawing. In the drawing the sole figure shows a cross-sectional view of a section a high pressure fuel injector for direct Injecting, externally ignited Internal combustion engine according to a preferred embodiment the invention.
Beschreibung des AusführungsbeispielsDescription of the embodiment
In
der Figur ist der für
die Erfindung wesentliche Abschnitt einer Hochdruck-Kraftstoffeinspritzvorrichtung
Die
Hochdruck-Kraftstoffeinspritzvorrichtung
Weil
das Dichtelement
Je
nach Größe des Dichtelements
Claims (4)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410061031 DE102004061031A1 (en) | 2004-12-18 | 2004-12-18 | High-pressure fuel injection device for an internal combustion engine |
PCT/EP2005/012831 WO2006063689A1 (en) | 2004-12-18 | 2005-12-01 | High-pressure fuel injection device for an internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410061031 DE102004061031A1 (en) | 2004-12-18 | 2004-12-18 | High-pressure fuel injection device for an internal combustion engine |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102004061031A1 true DE102004061031A1 (en) | 2006-06-29 |
Family
ID=35659008
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200410061031 Withdrawn DE102004061031A1 (en) | 2004-12-18 | 2004-12-18 | High-pressure fuel injection device for an internal combustion engine |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE102004061031A1 (en) |
WO (1) | WO2006063689A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2112367B1 (en) | 2008-04-23 | 2011-09-14 | Continental Automotive GmbH | Coupling arrangement and fuel injector |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2908095C2 (en) * | 1979-03-02 | 1984-02-16 | Robert Bosch Gmbh, 7000 Stuttgart | Fuel injection system for internal combustion engines |
US4844515A (en) * | 1986-02-14 | 1989-07-04 | General Motors Corporation | Fuel connection |
US5394850A (en) * | 1993-11-19 | 1995-03-07 | Siemens Electric Limited | Top-feed fuel injector mounting in an integrated air-fuel system |
GB2333323B (en) * | 1998-01-15 | 2001-09-05 | Ford Motor Co | Fuel line press-fit pressure diagnostic port |
US6374806B1 (en) * | 1999-10-25 | 2002-04-23 | International Truck And Engine Corp. | Actuating fluid delivery system for a fuel injector |
US6419282B1 (en) * | 2000-08-09 | 2002-07-16 | Siemens Automotive Corporation | Compliant zero evaporative fuel connection |
-
2004
- 2004-12-18 DE DE200410061031 patent/DE102004061031A1/en not_active Withdrawn
-
2005
- 2005-12-01 WO PCT/EP2005/012831 patent/WO2006063689A1/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
WO2006063689A1 (en) | 2006-06-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
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 |
|
8139 | Disposal/non-payment of the annual fee |