DE102006013958B4 - Fuel injector - Google Patents
Fuel injector Download PDFInfo
- Publication number
- DE102006013958B4 DE102006013958B4 DE102006013958.5A DE102006013958A DE102006013958B4 DE 102006013958 B4 DE102006013958 B4 DE 102006013958B4 DE 102006013958 A DE102006013958 A DE 102006013958A DE 102006013958 B4 DE102006013958 B4 DE 102006013958B4
- Authority
- DE
- Germany
- Prior art keywords
- coupler
- injection valve
- fuel injection
- fuel
- valve 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.)
- Expired - Fee Related
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 66
- 238000002347 injection Methods 0.000 claims abstract description 35
- 239000007924 injection Substances 0.000 claims abstract description 35
- 238000002485 combustion reaction Methods 0.000 claims abstract description 10
- 239000012528 membrane Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Images
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
- F02M61/08—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 the valves opening in direction of fuel flow
-
- 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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/0603—Injectors peculiar thereto with means directly operating the valve needle using piezoelectric or magnetostrictive operating means
-
- 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
- F02M2200/16—Sealing of fuel injection apparatus 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/70—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger
- F02M2200/703—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic
-
- 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
- F02M63/0012—Valves
- F02M63/0057—Means for avoiding fuel contact with valve actuator, e.g. isolating actuators by using bellows or diaphragms
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
Brennstoffeinspritzventil (1), insbesondere zum direkten Einspritzen von Brennstoff in einen Brennraum einer Brennkraftmaschine, mit einem piezoelektrischen oder magnetostriktiven Aktor (2) sowie mit einem hydraulischen Koppler (25), der mit einem Hydraulikmedium gefüllt ist, wobei der Koppler (25) einen Kopplerzylinder (28) und einen darin verschieblichen Kopplerkolben (27) sowie ein Ausgleichsvolumen (34) umfasst, aus welchem das Hydraulikmedium in einen Kopplerspalt (31) gelangt, dadurch gekennzeichnet, dass der Koppler (25) eine relativ zu einem Gehäuse (4) des Brennstoffeinspritzventils (1) verschieblich angeordnete Führung (26) aufweist, die von einem brennstoffführenden Rohr (21) zentral durchgriffen ist.Fuel injection valve (1), in particular for the direct injection of fuel into a combustion chamber of an internal combustion engine, with a piezoelectric or magnetostrictive actuator (2) and with a hydraulic coupler (25) which is filled with a hydraulic medium, wherein the coupler (25) is a coupler cylinder (28) and a coupler piston (27) displaceable therein and a compensation volume (34) from which the hydraulic medium passes into a coupler gap (31), characterized in that the coupler (25) has a relative to a housing (4) of the fuel injection valve (1) slidably disposed guide (26) which is penetrated by a fuel-carrying tube (21) centrally.
Description
sStand der TechnikState of the art
Die Erfindung geht aus von einem Brennstoffeinspritzventil nach der Gattung des Hauptanspruchs.The invention relates to a fuel injection valve according to the preamble of the main claim.
Aus der Offenlegungsschrift
Nachteilig an dem aus der
Weiterhin sind diverse Lösungen bekannt, dem Brennstoffeinspritzventil den Brennstoff zentral zuzuführen, jedoch ist es hierbei meist nicht möglich, einen hydraulischen Koppler zu integrieren, um thermische und mechanische Längenänderungen des Aktors zu kompensieren, wodurch es zu Schädigungen des Aktors bis zu völliger Unbrauchbarkeit des Brennstoffeinspritzventils kommen kann.Furthermore, various solutions are known to supply the fuel centrally to the fuel injector, but this is usually not possible to integrate a hydraulic coupler to compensate for thermal and mechanical changes in length of the actuator, resulting in damage to the actuator to the complete uselessness of the fuel injector can.
Aus der
Aus der
Aus der
Aus der
Vorteile der ErfindungAdvantages of the invention
Das erfindungsgemäße Brennstoffeinspritzventil mit den kennzeichnenden Merkmalen des Hauptanspruchs hat demgegenüber den Vorteil, dass sowohl ein hydraulischer Koppler als auch eine zentrale Brennstoffzufuhr kombiniert werden, was dadurch ermöglicht wird, dass der Koppler eine relativ zu einem Gehäuse des Brennstoffeinspritzventils verschieblich angeordnete Führung aufweist, die von einem brennstoffführenden Rohr durchgriffen ist.The fuel injection valve according to the invention with the characterizing features of the main claim has the advantage that both a hydraulic coupler and a central fuel supply are combined, which is made possible by the fact that the coupler has a relative to a housing of the fuel injection valve slidably disposed guide, which of a fuel-carrying pipe is penetrated.
Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen des im Hauptanspruch angegebenen Brennstoffeinspritzventils möglich.The measures listed in the dependent claims advantageous refinements and improvements of the main claim fuel injector are possible.
Weiterhin ist von Vorteil, dass die Krafteinleitung in die Führung in einfacher Weise über eine Druckscheibe durch eine sich gehäuseseitig abstützende Feder erfolgt.A further advantage is that the force is introduced into the guide in a simple manner via a pressure washer by a spring which is supported on the housing side.
Vorteilhafterweise ist der Koppler über zwei Dichtringe abgedichtet, so dass nur geringfügige Leckageverluste des Hydraulikmediums zu verzeichnen sind.Advantageously, the coupler is sealed by two sealing rings, so that only slight leakage losses of the hydraulic medium are recorded.
Besonders vorteilhaft ist, dass sich der Kopplerkolben über eine kardanische Lagerung an dem Aktor abstützt, wodurch sowohl axiale als auch radiale Toleranzen ausgeglichen werden können.It is particularly advantageous that the coupler piston is supported via a cardan bearing on the actuator, whereby both axial and radial tolerances can be compensated.
Zeichnungdrawing
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung vereinfacht dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen:An embodiment of the invention is shown in simplified form in the drawing and explained in more detail in the following description. Show it:
Beschreibung des Ausführungsbeispiels Description of the embodiment
In
Das Brennstoffeinspritzventil
Abströmseitig des Aktormoduls
Die Ventilnadel
An dem Einsatz
Eine zweite Membran
In die Einstellhülse
Der dem Brennstoffeinspritzventil
Das beschriebene Ausführungsbeispiel eines Brennstoffeinspritzventils
Es ist bekannt, zum Ausgleich derartiger Toleranzen einen hydraulischen Koppler einzusetzen, welcher mit einem Hydraulikmedium befüllt ist, welches je nach Belastungszustand aus einem Ausgleichsvolumen in einen Kopplerspalt und zurück geleitet wird. Derartige Lösungen sind jedoch bedingt durch die Bauform des hydraulischen Kopplers meist mit einer seitlichen Brennstoffzufuhr versehen, welche die Herstellung und Montage der Bauteile aufwendig macht.It is known to use to compensate for such tolerances a hydraulic coupler which is filled with a hydraulic medium, which is passed depending on the load state of a compensating volume in a coupler gap and back. However, such solutions are usually provided by the design of the hydraulic coupler with a lateral fuel supply, which makes the manufacture and assembly of the components consuming.
Erfindungsgemäß ist daher vorgesehen, einen hydraulischen Koppler
Ein bevorzugtes Ausführungsbeispiel eines mit einem derartigen Koppler
Dabei ist der Koppler
Zuströmseitig stützt sich an der Führung
Der Kopplerkolben
Wird der Aktor
Die Montage des erfindungsgemäßen Kopplers
Da durch die Dichtringe
Durch die beschriebene erfindungsgemäße Ausbildung des Kopplers
Die Erfindung ist nicht auf das dargestellte Ausführungsbeispiel beschränkt und auch für beliebige andere Bauweisen von Brennstoffeinspritzventilen
Claims (10)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006013958.5A DE102006013958B4 (en) | 2006-03-27 | 2006-03-27 | Fuel injector |
ITMI20070556 ITMI20070556A1 (en) | 2006-03-27 | 2007-03-21 | FUEL INJECTION VALVE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006013958.5A DE102006013958B4 (en) | 2006-03-27 | 2006-03-27 | Fuel injector |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102006013958A1 DE102006013958A1 (en) | 2007-10-04 |
DE102006013958B4 true DE102006013958B4 (en) | 2016-11-10 |
Family
ID=38460062
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102006013958.5A Expired - Fee Related DE102006013958B4 (en) | 2006-03-27 | 2006-03-27 | Fuel injector |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE102006013958B4 (en) |
IT (1) | ITMI20070556A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011006202A1 (en) * | 2011-03-28 | 2012-10-04 | Robert Bosch Gmbh | Valve for metering a medium |
DE102014201065A1 (en) * | 2014-01-22 | 2015-07-23 | Robert Bosch Gmbh | Valve for metering fluid |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4858439A (en) * | 1987-03-03 | 1989-08-22 | Toyota Jidosha Kabushiki Kaisha | Device for varying a stroke |
DE29708546U1 (en) * | 1997-05-14 | 1998-09-10 | Fev Motorentech Gmbh & Co Kg | Electric solid state actuator with hydraulic transmission |
DE10357189A1 (en) * | 2003-12-08 | 2005-07-07 | Robert Bosch Gmbh | Fuel injector |
DE102004002134A1 (en) * | 2004-01-15 | 2005-08-04 | Robert Bosch Gmbh | Fuel injection valve has second seal on other side of pot floor from piston forming second balancing chamber with first pot floor that has flow connection via choke element to coupler gap |
DE60302329T2 (en) * | 2003-02-04 | 2006-06-22 | Siemens Vdo Automotive S.P.A., Fauglia | Compensator to compensate for thermal expansion for a metering device |
-
2006
- 2006-03-27 DE DE102006013958.5A patent/DE102006013958B4/en not_active Expired - Fee Related
-
2007
- 2007-03-21 IT ITMI20070556 patent/ITMI20070556A1/en unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4858439A (en) * | 1987-03-03 | 1989-08-22 | Toyota Jidosha Kabushiki Kaisha | Device for varying a stroke |
DE29708546U1 (en) * | 1997-05-14 | 1998-09-10 | Fev Motorentech Gmbh & Co Kg | Electric solid state actuator with hydraulic transmission |
DE60302329T2 (en) * | 2003-02-04 | 2006-06-22 | Siemens Vdo Automotive S.P.A., Fauglia | Compensator to compensate for thermal expansion for a metering device |
DE10357189A1 (en) * | 2003-12-08 | 2005-07-07 | Robert Bosch Gmbh | Fuel injector |
DE102004002134A1 (en) * | 2004-01-15 | 2005-08-04 | Robert Bosch Gmbh | Fuel injection valve has second seal on other side of pot floor from piston forming second balancing chamber with first pot floor that has flow connection via choke element to coupler gap |
Also Published As
Publication number | Publication date |
---|---|
ITMI20070556A1 (en) | 2007-09-28 |
DE102006013958A1 (en) | 2007-10-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R012 | Request for examination validly filed |
Effective date: 20121212 |
|
R016 | Response to examination communication | ||
R016 | Response to examination communication | ||
R016 | Response to examination communication | ||
R018 | Grant decision by examination section/examining division | ||
R020 | Patent grant now final | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |