DE102009000206A1 - Fuel injector for internal combustion engines - Google Patents
Fuel injector for internal combustion engines Download PDFInfo
- Publication number
- DE102009000206A1 DE102009000206A1 DE200910000206 DE102009000206A DE102009000206A1 DE 102009000206 A1 DE102009000206 A1 DE 102009000206A1 DE 200910000206 DE200910000206 DE 200910000206 DE 102009000206 A DE102009000206 A DE 102009000206A DE 102009000206 A1 DE102009000206 A1 DE 102009000206A1
- Authority
- DE
- Germany
- Prior art keywords
- nozzle needle
- fuel injector
- pressure chamber
- annular gap
- injector according
- 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- Withdrawn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
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
-
- 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
- F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
- F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
- F02M47/022—Mechanically actuated valves draining the chamber to release the closing pressure
-
- 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
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
- F02M61/12—Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies
-
- 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
- F02M61/161—Means for adjusting injection-valve lift
-
- 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
- F02M61/20—Closing valves mechanically, e.g. arrangements of springs or weights or permanent magnets; Damping of valve lift
- F02M61/205—Means specially adapted for varying the spring tension or assisting the spring force to close the injection-valve, e.g. with damping of valve lift
-
- 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
- F02M2200/28—Details of throttles in fuel-injection apparatus
Abstract
Es wird ein Kraftstoffinjektor für Brennkraftmaschinen mit einem in einem Gehäuse (10) ausgebildeten Druckraum (16) vorgeschlagen, in dem eine Düsennadel (15) hubverstellbar angeordnet ist. Der Druckraum (16) ist in einen düsennadelsitzfernen Speicherdruckraum (26) und einen düsennadelsitznahen Düsennadeldruckraum (25) aufgeteilt, wobei zwischen dem Speicherdruckraum (26) und dem Düsennadeldruckraum (25) ein als Ringspaltdrossel ausgebildetes hydraulisches Drosselelement (40) angeordnet ist. An der Düsennadel (15) sind mindestens zwei in Strömungsrichtung des Kraftstoffs hintereinander liegende Ringspaltdrosselelemente (41.1 bis 41.n) angeordnet.A fuel injector for internal combustion engines with a pressure chamber (16) formed in a housing (10) is proposed, in which a nozzle needle (15) is arranged to be adjustable in stroke. The pressure chamber (16) is divided into a nozzle space remote memory pressure chamber (26) and a nozzle needle near the nozzle needle pressure chamber (25), between the accumulator pressure chamber (26) and the nozzle needle pressure chamber (25) designed as an annular gap throttle hydraulic throttle element (40) is arranged. At the nozzle needle (15) at least two annular gap in the flow direction of the fuel annular gap (41.1 to 41.n) are arranged.
Description
Die Erfindung betrifft einen Kraftstoffinjektor für Brennkraftmaschinen mit den Merkmalen des Oberbegriffs des Anspruchs 1.The The invention relates to a fuel injector for internal combustion engines with the features of the preamble of claim 1.
Stand der TechnikState of the art
Ein
derartiger Kraftstoffinjektor ist aus
Zur
hydraulischen Drosselung der hydraulischen Verbindung zwischen dem
Speicherdruckraum und dem Düsennadeldruckraum wurde in
der
Aufgabe der vorliegenden Erfindung ist es, ein hydraulisches Drosselelement zwischen dem Speicherdruckraum und dem Düsennadeldruckraum auszuführen, das geringere Anforderungen an die Fertigungstoleranzen stellt.task The present invention is a hydraulic throttle element between the storage pressure space and the nozzle needle pressure space, which makes lower demands on the manufacturing tolerances.
Offenbarung der ErfindungDisclosure of the invention
Die Aufgabe der Erfindung wird mit den kennzeichnenden Maßnahmen des Anspruchs 1 gelöst. Durch die Ausbildung von mindestens zwei in Strömungsrichtung des zugeführten Kraftstoffs hintereinander liegenden Ringspaltdrosselelementen ist es möglich, ein hydraulische Drosselung zur Ausbildung einer auf die Düsennadel wirkenden Schließkraft zu realisieren, die in der Gesamtwirkung eine geringere Sensitivität hinsichtlich der Spaltweite der Spaltdrossel aufweist. Dadurch ist es möglich, die Spaltweite an den einzelnen Ringspaltdrosselelementen größer zu dimensionieren, wodurch die Anforderungen an die Fertigungsgenauigkeit reduziert werden kann. Zusätzlich wird wegen der größeren Spaltweiten an den einzelnen Ringspaltdrosselelementen die Empfindlichkeit gegenüber im Kraftstoff mitgeführten Partikeln reduziert.The The object of the invention is with the characterizing measures of claim 1. By training at least two in the flow direction of the supplied fuel successive annular gap throttle elements it is possible a hydraulic throttling to form a on the nozzle needle to realize effective closing force, in the overall effect a lower sensitivity in terms of gap width having the gap choke. This makes it possible to change the gap width larger at the individual annular gap throttle elements to dimension, eliminating the demands on manufacturing accuracy can be reduced. In addition, because of the larger gap widths at the individual annular gap throttle elements the sensitivity to reduced in the fuel entrained particles.
Vorteilhafte Weiterbildungen der Erfindung sind durch die Maßnahmen der Unteransprüche möglich.advantageous Further developments of the invention are by the measures the dependent claims possible.
Ausführungsbeispieleembodiments
Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert.embodiments The invention are illustrated in the drawing and in the following description explained in more detail.
Es zeigen:It demonstrate:
Die
Düsennadel
Im
Düsenkörper
Am
düsennadelsitzfernen Kolbenabschnitt
In
den Speicherdruckraum
Zum Öffnen
der Düsennadel
Zwischen
dem Speicherdruckraum
Beim
Ausführungsbeispiel in
Beim
Ausführungsbeispiel gemäß
Aus
den
Beim
Ausführungsbeispiel gemäß
Beim
Ausführungsbeispiel gemäß
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 2006036447 A1 [0002] - DE 2006036447 A1 [0002]
- - DE 102007032741 [0003] - DE 102007032741 [0003]
Claims (11)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200910000206 DE102009000206A1 (en) | 2009-01-14 | 2009-01-14 | Fuel injector for internal combustion engines |
CN2009801546532A CN102282354A (en) | 2009-01-14 | 2009-11-17 | Fuel injector for internal combustion engines |
EP09753107A EP2387661B1 (en) | 2009-01-14 | 2009-11-17 | Fuel injector for internal combustion engines |
PCT/EP2009/065278 WO2010081574A1 (en) | 2009-01-14 | 2009-11-17 | Fuel injector for internal combustion engines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200910000206 DE102009000206A1 (en) | 2009-01-14 | 2009-01-14 | Fuel injector for internal combustion engines |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102009000206A1 true DE102009000206A1 (en) | 2010-07-15 |
Family
ID=41682737
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200910000206 Withdrawn DE102009000206A1 (en) | 2009-01-14 | 2009-01-14 | Fuel injector for internal combustion engines |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2387661B1 (en) |
CN (1) | CN102282354A (en) |
DE (1) | DE102009000206A1 (en) |
WO (1) | WO2010081574A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010043363A1 (en) | 2010-11-04 | 2012-05-10 | Robert Bosch Gmbh | Magnet armature assembly of fuel injector for injecting fuel into combustion chamber of combustion engine, has compression springs that are arranged radially at equal angular distances from one another along longitudinal axis |
WO2012171770A1 (en) | 2011-06-14 | 2012-12-20 | Robert Bosch Gmbh | Fuel injector for an internal combustion engine |
WO2013034543A1 (en) * | 2011-09-08 | 2013-03-14 | Delphi Technologies Holding S.À.R.L. | Injection nozzle |
WO2014206753A1 (en) * | 2013-06-27 | 2014-12-31 | Delphi International Operations Luxembourg S.À R.L. | Fuel injector |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009029562A1 (en) * | 2009-07-30 | 2011-02-03 | Robert Bosch Gmbh | Fuel injection valve for internal combustion engines |
CN104847556A (en) * | 2015-05-19 | 2015-08-19 | 中国重汽集团重庆燃油喷射系统有限公司 | Non-static leakage oil sprayer |
CN109681360A (en) * | 2019-02-28 | 2019-04-26 | 一汽解放汽车有限公司 | A kind of long needle-valve for fuel injection valve |
CN110529317A (en) * | 2019-08-23 | 2019-12-03 | 一汽解放汽车有限公司 | A kind of fuel injection valve valve pocket assembly |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006036447A1 (en) | 2006-08-04 | 2008-02-07 | Robert Bosch Gmbh | Injector for a fuel injection system |
DE102007032741A1 (en) | 2007-07-13 | 2009-01-15 | Robert Bosch Gmbh | Fuel injection valve for internal combustion engines |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10019153A1 (en) * | 2000-04-18 | 2001-10-25 | Bosch Gmbh Robert | Fuel injection valve for IC engines has valve bore with valve member and valve piston loaded by hydraulic closing force to engage on valve member |
DE10149961A1 (en) * | 2001-10-10 | 2003-04-30 | Bosch Gmbh Robert | Fuel injection device for internal combustion engine, especially common rail injector, has flow path control sections interacting to give defined flow characteristic against time |
DE10348928A1 (en) * | 2003-10-18 | 2005-05-12 | Bosch Gmbh Robert | Fuel injection device for automobile internal combustion engine has throttle in path of fuel to injection opening for reducing force acting on jet needle in opening direction |
JP4608555B2 (en) * | 2005-02-22 | 2011-01-12 | シーメンス ヴィディーオー オートモーティヴ コーポレイション | Fuel injection assembly |
US7690588B2 (en) * | 2007-07-31 | 2010-04-06 | Caterpillar Inc. | Fuel injector nozzle with flow restricting device |
-
2009
- 2009-01-14 DE DE200910000206 patent/DE102009000206A1/en not_active Withdrawn
- 2009-11-17 WO PCT/EP2009/065278 patent/WO2010081574A1/en active Application Filing
- 2009-11-17 CN CN2009801546532A patent/CN102282354A/en active Pending
- 2009-11-17 EP EP09753107A patent/EP2387661B1/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006036447A1 (en) | 2006-08-04 | 2008-02-07 | Robert Bosch Gmbh | Injector for a fuel injection system |
DE102007032741A1 (en) | 2007-07-13 | 2009-01-15 | Robert Bosch Gmbh | Fuel injection valve for internal combustion engines |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010043363A1 (en) | 2010-11-04 | 2012-05-10 | Robert Bosch Gmbh | Magnet armature assembly of fuel injector for injecting fuel into combustion chamber of combustion engine, has compression springs that are arranged radially at equal angular distances from one another along longitudinal axis |
WO2012171770A1 (en) | 2011-06-14 | 2012-12-20 | Robert Bosch Gmbh | Fuel injector for an internal combustion engine |
DE102011077464A1 (en) | 2011-06-14 | 2012-12-20 | Robert Bosch Gmbh | Fuel injector for an internal combustion engine |
WO2013034543A1 (en) * | 2011-09-08 | 2013-03-14 | Delphi Technologies Holding S.À.R.L. | Injection nozzle |
CN103764998A (en) * | 2011-09-08 | 2014-04-30 | 德尔福技术控股有限公司 | Injection nozzle |
US9234487B2 (en) | 2011-09-08 | 2016-01-12 | Delphi International Operations Luxembourg S.A.R.L. | Injection nozzle |
CN103764998B (en) * | 2011-09-08 | 2016-09-14 | 德尔福国际运营卢森堡有限公司 | Nozzle |
WO2014206753A1 (en) * | 2013-06-27 | 2014-12-31 | Delphi International Operations Luxembourg S.À R.L. | Fuel injector |
EP2818687A1 (en) * | 2013-06-27 | 2014-12-31 | Delphi International Operations Luxembourg S.à r.l. | Fuel injector |
Also Published As
Publication number | Publication date |
---|---|
EP2387661A1 (en) | 2011-11-23 |
CN102282354A (en) | 2011-12-14 |
EP2387661B1 (en) | 2012-10-03 |
WO2010081574A1 (en) | 2010-07-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20140801 |