DE102009018767A1 - Fuel injection valve for internal combustion engine, has nozzle body with hollow chamber which is divided into valve seat hole and stud hole is adjacent to valve seat hole - Google Patents
Fuel injection valve for internal combustion engine, has nozzle body with hollow chamber which is divided into valve seat hole and stud hole is adjacent to valve seat hole Download PDFInfo
- Publication number
- DE102009018767A1 DE102009018767A1 DE102009018767A DE102009018767A DE102009018767A1 DE 102009018767 A1 DE102009018767 A1 DE 102009018767A1 DE 102009018767 A DE102009018767 A DE 102009018767A DE 102009018767 A DE102009018767 A DE 102009018767A DE 102009018767 A1 DE102009018767 A1 DE 102009018767A1
- Authority
- DE
- Germany
- Prior art keywords
- valve seat
- hole
- blind hole
- fuel injection
- valve
- 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.)
- Pending
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
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
-
- 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
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1866—Valve seats or member ends having multiple cones
-
- 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
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1886—Details of valve seats not covered by groups F02M61/1866 - F02M61/188
-
- 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
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1893—Details of valve member ends not covered by groups F02M61/1866 - F02M61/188
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
Die Erfindung betrifft eine Kraftstoffeinspritzdüse für eine Brennkraftmaschine gemäß dem Oberbegriff des Patentanspruchs 1.The The invention relates to a fuel injection nozzle for an internal combustion engine according to the preamble of claim 1
Eine
Kraftstoffeinspritzdüse der eingangs genannten Art ist
aus
Der Erfindung liegt die Aufgabe zugrunde, eine unter dem Gesichtspunkt von Kraftstoffverbrauch und Abgasemission einer Brennkraftmaschine verbesserte Kraftstoffeinspritzdüse bereitzustellen.Of the Invention is based on the object, a from the point of view of fuel consumption and exhaust emission of an internal combustion engine to provide improved fuel injector.
Dies wird mit einer Kraftstoffeinspritzdüse gemäß Anspruch 1 erreicht. Weiterbildungen der Erfindung sind in den abhängigen Ansprüchen definiert.This is with a fuel injector according to claim 1 reached. Further developments of the invention are in the dependent Claims defined.
Gemäß der Erfindung weist eine Kraftstoffeinspritzdüse für eine Brennkraftmaschine auf: einen Düsenkörper mit einem Hohlraum, der unterteilt ist in ein Ventilsitzloch und ein sich an das Ventilsitzloch anschließendes Sackloch, von dem wenigstens eine Kraftstoffeinspritzpassage abzweigt, wobei das Ventilsitzloch in Richtung zum Sackloch hin konisch zulaufend ausgebildet ist und an einer das Ventilsitzloch begrenzenden Innenwand eine erste Ventilsitzfläche definiert ist, und eine in den Hohlraum des Düsenkörpers axial verschiebbar eingesetzte Düsennadel, die einen Ventilsitzabschnitt und einen sich an den Ventilsitzabschnitt anschließenden Spitzenabschnitt aufweist, wobei der Ventilsitzabschnitt einen konisch zulaufenden Außenumfang hat, der eine zweite Ventilsitzfläche definiert, die eingerichtet ist zum Zusammenwirken mit der ersten Ventilsitzfläche, so dass ein im Durchflussquerschnitt steuerbares Ventil gebildet ist.According to the Invention has a fuel injector for an internal combustion engine on: a nozzle body with a cavity which is divided into a valve seat hole and a blind hole adjoining the valve seat hole, of the at least one fuel injection passage branches, wherein the valve seat hole tapering towards the blind hole is formed and on a valve seat hole bounding inner wall a first valve seat surface is defined, and an in the cavity of the nozzle body axially displaceable used nozzle needle having a valve seat portion and a tip portion adjoining the valve seat portion wherein the valve seat portion has a tapered Outside has a second valve seat surface defined for cooperation with the first valve seat surface, so that a controllable in the flow area valve is formed.
Die Kraftstoffeinspritzdüse zeichnet sich dadurch aus, dass das Sackloch bzw. dessen im Wesentlichen geradliniger bzw. planarer Wandungsabschnitt in Richtung zu einem Boden des Sacklochs hin konisch zulaufend ausgebildet ist. Bevorzugt weist der Hohlraum einen kreisförmigen Querschnitt auf und weist der Boden des Sacklochs bzw. dessen Wandungsabschnitt eine kurvenförmig gekrümmte Kontur, wie eine kreisförmig gekrümmte Kontur oder eine hyperbelförmig gekrümmte Kontur, auf.The Fuel injector is characterized in that the blind hole or its substantially rectilinear or planar Wall section towards a bottom of the blind hole conically is formed tapered. Preferably, the cavity has a circular Cross-section and has the bottom of the blind hole or its wall portion a curved curved contour, like a circular one curved contour or a hyperbolic curved Contour, up.
Ferner endet der Spitzenabschnitt der Drehzahl bevorzugt punktförmig in einer Spitze und erstreckt sich über eine Ebene des Sacklochs, in der die Kraftstoffeinspritzpassage von dem Sackloch abzweigt, hinaus in das Sackloch hinein, was weitere strömungstechnische Vorteile mit sich bringt.Further ends the tip portion of the speed preferably punctiform in a tip and extends over a plane of the Blind hole, in the fuel injection passage from the blind hole branches off, out into the blind hole in what further fluidic Benefits.
Dadurch, dass gemäß der Erfindung das Sackloch konisch bzw. kegelig ausgebildet ist, weist das Sackloch bei gleicher Dimensionierung des Ventils ein gegenüber dem Stand der Technik reduziertes Volumen auf, was zu geringerem Kraftstoffverbrauch, weniger Kohlenwasserstoff-Emissionen (HC-Emissionen) und verringerter Verkokung der Kraftstoffeinspritzdüse (im Schwerölbetrieb) führt, wodurch auch der Verschleiß benachbarter Bauteile reduziert wird.Thereby, that according to the invention, the blind hole conical or conical, the blind hole has the same dimensions the valve a reduced volume compared to the prior art resulting in lower fuel consumption, less hydrocarbon emissions (HC emissions) and reduced coking of the fuel injector (in heavy oil operation) leads, whereby the wear of adjacent Components is reduced.
Ferner reduziert sich durch die konische bzw. kegelige Ausgestaltung des Sacklochs im Betrieb der erfindungsgemäßen Kraftstoffeinspritzdüse die Wandablösung des einströmenden Kraftstoffs, was zu verringerter Kavitation und weniger Druckverlust führt, wodurch die Zerstäubung bei der Einspritzung des Kraftstoffs und damit die Verbrennung optimiert werden.Further is reduced by the conical or conical design of the Blind hole during operation of the fuel injection nozzle according to the invention the wall separation of the incoming fuel, resulting in reduced cavitation and less pressure loss, whereby the atomization during the injection of the fuel and thus the combustion can be optimized.
Mit anderen Worten stellt die erfindungsgemäße Ausgestaltung der Kraftstoffeinspritzdüse eine optimale Lösung hinsichtlich maximalem Sacklochdruck und minimalem Sacklochvolumen und ggf. zusätzlichen Randbedingungen dar. Bevorzugt beträgt ein die Konizität des Sacklochs definierender Sacklochwinkel 60 Grad bis 70 Grad.With In other words, the embodiment of the invention provides the fuel injector is an optimal solution in terms of maximum blind hole pressure and minimum blind hole volume and possibly additional boundary conditions. Preferably, a the conicity of the blind hole defining blind hole angle 60 degrees to 70 degrees.
Gemäß einer Ausführungsform der Erfindung ist ein Düsennadeldurchmesser an einem Übergang vom Ventilsitzabschnitt zum Spitzenabschnitt etwas größer, als ein Hohlraumdurchmesser an einem Übergang vom Ventilsitzloch zum Sackloch.According to one Embodiment of the invention is a nozzle needle diameter at a transition from the valve seat portion to the tip portion slightly larger than a cavity diameter at a transition from the valve seat hole to the blind hole.
Dadurch setzt die Düsenadel in einem Schließzustand des Ventils mit ihrer Ventilsitzfläche (zweite Ventilsitzfläche) etwas höher auf der Ventilsitzfläche (erste Ventilsitzfläche) des Düsenkörpers auf, so dass der Übergang von Ventilsitzloch zu Sackloch freiliegt. Mit dieser geometrischen Gestaltung wird bei offenem Ventil eine kontinuierliche Querschnittsverringerung des zuströmenden Kraftstoffs erreicht und ein ”Umschlagen” der Strömung vermieden. Bevorzugt beträgt ein die Konizität des Ventilsitzlochs und des Ventilsitzabschnitts definierender Ventilsitzwinkel ca. 90 Grad.Thereby sets the nozzle needle in a closed state of Valve with its valve seat surface (second valve seat surface) slightly higher on the valve seat surface (first valve seat surface) of the nozzle body, so the transition from valve seat hole to blind hole exposed. With this geometric Design becomes a continuous cross-sectional reduction when the valve is open reaches the inflowing fuel and a "turnover" of Flow avoided. Preferably, a is the Conicity of the valve seat hole and the valve seat portion defining valve seat angle about 90 degrees.
Im Folgenden wird die Erfindung anhand einer bevorzugten Ausführungsform und unter Bezugnahme auf die beigefügte Figur detaillierter beschrieben.in the The invention is based on a preferred embodiment and with reference to the attached figure in more detail described.
In
Die
Kraftstoffeinspritzdüse
Der
Düsenkörper
Das
Ventilsitzloch
Das
Sackloch
Der
Hohlraum
Die
Düsennadel
Der
Ventilsitzabschnitt
Der
Spitzenabschnitt
Gemäß der
gezeigten Ausführungsform beträgt der die Konizität
des Ventilsitzlochs
Die
Düsennadel
Gemäß der
gezeigten Ausführungsform ist der Düsennadeldurchmesser
du etwas größer als der Hohlraumdurchmesser DU, so dass im gezeigten Schließzustand
des Ventils V der Übergang an der Düsennadel
Mit dieser geometrischen Gestaltung wird bei offenem Ventil V eine kontinuierliche Querschnittsverringerung des zuströmenden Kraftstoffs erreicht und ein ”Umschlagen” der Strömung vermieden.With This geometric design is a continuous valve V open Cross-section reduction of the incoming fuel reached and avoided a "turnover" of the flow.
Im
Fazit wird gemäß der Erfindung dadurch, dass das
Sackloch
Ferner
reduziert sich durch die konische bzw. kegelige Ausgestaltung des
Sacklochs
- 11
- Kraftstoffeinspritzdüsefuel Injector
- 1010
- Düsenkörpernozzle body
- 2020
- Düsennadelnozzle needle
- 2121
- VentilsitzabschnittValve seat portion
- 2222
- zweite Ventilsitzflächesecond Valve seat
- 2525
- Spitzenabschnitttip portion
- 3030
- Hohlraumcavity
- 3131
- VentilsitzlochValve seat hole
- 3232
- erste Ventilsitzflächefirst Valve seat
- 3333
- KraftstoffeinspritzpassageFuel injection passage
- 3535
- Sacklochblind
- 3636
- Bodenground
- VV
- VentilValve
- DU D U
- HohlraumdurchmesserCavity diameter
- dU d U
- DüsennadeldurchmesserNozzle needle diameter
- Δh.delta.h
- Höhendifferenzheight difference
- εε
- SacklochwinkelBlind angle
- σσ
- VentilsitzwinkelValve seat angle
- αα
- SpitzenwinkelPoint angle
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - DE 102006043460 A1 [0002] - DE 102006043460 A1 [0002]
Claims (4)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009018767A DE102009018767A1 (en) | 2009-04-24 | 2009-04-24 | Fuel injection valve for internal combustion engine, has nozzle body with hollow chamber which is divided into valve seat hole and stud hole is adjacent to valve seat hole |
KR1020100003996A KR101231963B1 (en) | 2009-04-24 | 2010-01-15 | Fuel injection nozzle for an internal combustion engine |
JP2010027840A JP5606750B2 (en) | 2009-04-24 | 2010-02-10 | Fuel injection nozzle for combustion engine |
FI20105373A FI126814B (en) | 2009-04-24 | 2010-04-12 | Fuel injection nozzle for internal combustion engine |
CN2010101659380A CN101871412B (en) | 2009-04-24 | 2010-04-23 | Fuel injection nozzle for internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009018767A DE102009018767A1 (en) | 2009-04-24 | 2009-04-24 | Fuel injection valve for internal combustion engine, has nozzle body with hollow chamber which is divided into valve seat hole and stud hole is adjacent to valve seat hole |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102009018767A1 true DE102009018767A1 (en) | 2010-10-28 |
Family
ID=42133219
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102009018767A Pending DE102009018767A1 (en) | 2009-04-24 | 2009-04-24 | Fuel injection valve for internal combustion engine, has nozzle body with hollow chamber which is divided into valve seat hole and stud hole is adjacent to valve seat hole |
Country Status (5)
Country | Link |
---|---|
JP (1) | JP5606750B2 (en) |
KR (1) | KR101231963B1 (en) |
CN (1) | CN101871412B (en) |
DE (1) | DE102009018767A1 (en) |
FI (1) | FI126814B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2461014A1 (en) * | 2010-12-06 | 2012-06-06 | OMT Officine Meccaniche Torino S.p.A. | Nozzle with long service life for high-pressure mechanical injectors operating with heavy fuel |
WO2012010657A3 (en) * | 2010-07-23 | 2012-06-14 | Continental Automotive Gmbh | Nozzle body comprising a blind hole |
KR101231963B1 (en) * | 2009-04-24 | 2013-02-08 | 만 디젤 앤 터보 에스이 | Fuel injection nozzle for an internal combustion engine |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019103512A1 (en) * | 2019-02-12 | 2020-08-13 | Liebherr-Components Deggendorf Gmbh | Nozzle for a fuel injector |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19841192A1 (en) * | 1998-09-09 | 2000-03-16 | Bosch Gmbh Robert | Fuel injection valve for internal combustion engines |
DE10328331A1 (en) * | 2002-06-25 | 2004-01-29 | Denso Corp., Kariya | Fuel injection nozzle for injecting fuel into the cylinder of internal combustion engine comprisesn injection passage having micropassages tapering from the inner side of seat passage or blind hole toward the outer side of the nozzle body |
DE102005025135A1 (en) * | 2005-06-01 | 2006-12-07 | Robert Bosch Gmbh | Fuel injection valve for internal combustion engines |
DE102006043460A1 (en) | 2006-09-15 | 2008-03-27 | Man Diesel Se | Method for optimizing injection nozzle for internal combustion engine, involves sliding nozzle body and needle axially in bore of body, where particle swarm optimization is used for geometric arrangement of nozzle |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3836080A (en) * | 1973-09-10 | 1974-09-17 | Ambac Ind | Fuel injection nozzle |
JP2541338B2 (en) * | 1990-03-28 | 1996-10-09 | 日本電装株式会社 | Fuel injection nozzle |
JP3028863B2 (en) * | 1991-05-23 | 2000-04-04 | 株式会社デンソー | Fuel injection valve |
JPH0763139A (en) * | 1993-08-27 | 1995-03-07 | Nippondenso Co Ltd | Fuel injection nozzle |
DE10315821A1 (en) * | 2002-11-11 | 2004-05-27 | Robert Bosch Gmbh | Motor vehicle internal combustion engine injection valve has housing with bore and pressure space defining throttled connection with valve shoulder on needle |
AT500773B8 (en) * | 2004-08-24 | 2007-02-15 | Bosch Gmbh Robert | INJECTION NOZZLE FOR INTERNAL COMBUSTION ENGINES |
EP1757803B1 (en) | 2005-08-24 | 2007-12-12 | Delphi Technologies, Inc. | Injection nozzle |
DE102009018767A1 (en) * | 2009-04-24 | 2010-10-28 | Man Diesel & Turbo Se | Fuel injection valve for internal combustion engine, has nozzle body with hollow chamber which is divided into valve seat hole and stud hole is adjacent to valve seat hole |
-
2009
- 2009-04-24 DE DE102009018767A patent/DE102009018767A1/en active Pending
-
2010
- 2010-01-15 KR KR1020100003996A patent/KR101231963B1/en active IP Right Grant
- 2010-02-10 JP JP2010027840A patent/JP5606750B2/en active Active
- 2010-04-12 FI FI20105373A patent/FI126814B/en active IP Right Grant
- 2010-04-23 CN CN2010101659380A patent/CN101871412B/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19841192A1 (en) * | 1998-09-09 | 2000-03-16 | Bosch Gmbh Robert | Fuel injection valve for internal combustion engines |
DE10328331A1 (en) * | 2002-06-25 | 2004-01-29 | Denso Corp., Kariya | Fuel injection nozzle for injecting fuel into the cylinder of internal combustion engine comprisesn injection passage having micropassages tapering from the inner side of seat passage or blind hole toward the outer side of the nozzle body |
DE102005025135A1 (en) * | 2005-06-01 | 2006-12-07 | Robert Bosch Gmbh | Fuel injection valve for internal combustion engines |
DE102006043460A1 (en) | 2006-09-15 | 2008-03-27 | Man Diesel Se | Method for optimizing injection nozzle for internal combustion engine, involves sliding nozzle body and needle axially in bore of body, where particle swarm optimization is used for geometric arrangement of nozzle |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101231963B1 (en) * | 2009-04-24 | 2013-02-08 | 만 디젤 앤 터보 에스이 | Fuel injection nozzle for an internal combustion engine |
WO2012010657A3 (en) * | 2010-07-23 | 2012-06-14 | Continental Automotive Gmbh | Nozzle body comprising a blind hole |
EP2461014A1 (en) * | 2010-12-06 | 2012-06-06 | OMT Officine Meccaniche Torino S.p.A. | Nozzle with long service life for high-pressure mechanical injectors operating with heavy fuel |
ITTO20100969A1 (en) * | 2010-12-06 | 2012-06-07 | O M T Ohg Torino S P A | HIGH-LIFE OPERATING PULVERIZER FOR HIGH-PRESSURE MECHANICAL INJECTORS OPERATING WITH HEAVY FUEL |
Also Published As
Publication number | Publication date |
---|---|
KR101231963B1 (en) | 2013-02-08 |
JP2010255620A (en) | 2010-11-11 |
CN101871412B (en) | 2013-05-29 |
FI20105373A0 (en) | 2010-04-12 |
FI126814B (en) | 2017-06-15 |
JP5606750B2 (en) | 2014-10-15 |
KR20100117501A (en) | 2010-11-03 |
CN101871412A (en) | 2010-10-27 |
FI20105373A (en) | 2010-10-25 |
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Legal Events
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OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
R012 | Request for examination validly filed | ||
R081 | Change of applicant/patentee |
Owner name: MAN ENERGY SOLUTIONS SE, DE Free format text: FORMER OWNER: MAN DIESEL & TURBO SE, 86153 AUGSBURG, DE |
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R016 | Response to examination communication |