EP1179134B1 - Injection nozzle - Google Patents
Injection nozzle Download PDFInfo
- Publication number
- EP1179134B1 EP1179134B1 EP01915037A EP01915037A EP1179134B1 EP 1179134 B1 EP1179134 B1 EP 1179134B1 EP 01915037 A EP01915037 A EP 01915037A EP 01915037 A EP01915037 A EP 01915037A EP 1179134 B1 EP1179134 B1 EP 1179134B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nozzle
- injection
- nozzle needle
- holes
- fuel
- 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 - Lifetime
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Classifications
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- 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
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- 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
- F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
- F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
- F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
- F02M45/08—Injectors peculiar thereto
- F02M45/086—Having more than one injection-valve controlling discharge orifices
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- 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
- F02M2200/46—Valves, e.g. injectors, with concentric valve bodies
Definitions
- the invention relates to a fuel injector having a nozzle body having a first and a second group of spray holes, a first and a second nozzle needle and a separate pressure chamber for each nozzle needle, so that they independently between a closed position in which the corresponding injection needle associated injection holes are closed, and an injection position are adjustable, in which the corresponding injection holes are opened.
- the invention also relates to a method for operating a fuel injection nozzle.
- a fuel injection nozzle of the type mentioned is known.
- the injection holes of a group are each arranged along a circle, with an inner circle and an outer circle concentric therewith.
- the nozzle needle associated with the outer spray holes is designed as a hollow cylinder, and the nozzle needle associated with the inner spray holes is arranged in the interior of the hollow nozzle needle.
- a separating sleeve is arranged, which is acted upon by a compression spring in contact with a sealing seat in the nozzle body, which is formed between the two injection hole circles.
- the inner injection holes are used for pre-injection, while the outer injection holes are provided for main injection. In any case, the separating sleeve ensures during opening of the nozzle needles that the two groups of spray holes remain separated.
- a disadvantage of this known construction is the comparatively high construction costs. Since the spray holes of the two groups are very close to each other, both the two nozzle needles and the separating sleeve must be accommodated in a very small space.
- an injection valve which has a nozzle body with a first and a second group of spray holes, wherein the injection holes are opened or closed by two nozzle needles guided one inside the other.
- the nozzle needles are controlled separately.
- the object of the invention is to develop an injector of the type mentioned in such a way that a simpler structure is achieved. Furthermore, a flexible use of the two groups of spray holes to be made possible by a suitable control of the two nozzle needles. The object of the invention is also to provide a method for operating an injection nozzle of the type mentioned.
- a stop chamber is provided for at least one of the nozzle needles, which is provided with a hydraulic connection.
- a hydraulic stroke stop for the corresponding nozzle needle is created, which delimits the opening movement of the nozzle needle gentler than a conventional mechanical stroke stop.
- a longer life of the nozzle needle is achieved.
- the method according to claim 4 offers the advantage that any of the various injection holes can be used for both the pre- and the main injection. In this way, a Vario bin can be achieved, since by appropriate control of one of the two nozzle needles or both nozzle needles, the total cross-sectional area of the injection holes can be adapted to the respective injection. If a long time only one row of holes is operated, can be prevented by appropriate, possibly only temporary switching to the other row of holes that verkokt the other row of holes.
- the method according to claim 4 can in principle also be used in an injection nozzle in which a separating sleeve is provided between the two nozzle needles, which facilitates the sealing between the various rows of holes.
- the injection nozzle 10 shown in Fig. 1 has a nozzle body 12 which is provided with two groups of spray holes 14, 16.
- the spray holes of each group are arranged along a circle with the two circles formed concentric and the circle of the first injection holes 14 surrounds the circle formed by the second injection holes 16.
- a first nozzle needle 18 and a second nozzle needle 20 are arranged inside the nozzle body.
- the first nozzle needle 18 has an annular cross-section, that is, it is hollow, and the second nozzle needle 20 is arranged in the interior of the first nozzle needle 18.
- the first nozzle needle 18 cooperates with the spray holes 14 of the first group, and the second nozzle needle 20 cooperates with the spray holes 16 of the second group.
- Each nozzle needle rests against the nozzle body 12 in such a way that, viewed in the radial direction, it is sealed on the inside and the outside of the corresponding injection hole circle
- the first nozzle needle 18 is provided with a collar 22 which bears against the nozzle body 12, so that a pressure chamber 24 is formed. This is provided with a fuel port 26 so that the pressure chamber 24 can be pressurized.
- a stop chamber 27 is formed, in which a compression spring 28 is arranged. This is supported on the nozzle body 12 and acts on the first nozzle needle 18 against the nozzle body 12, so that the injection holes 14 are closed.
- the stop chamber 27 is provided with a hydraulic connection 30, by means of which the pressure prevailing in the stop chamber 27 pressure can be varied.
- the second nozzle needle 20 is provided with a collar 32 so that a pressure chamber 34 is formed, which is provided with a fuel port 36, and a stop chamber 37, in which a compression spring 38 is arranged and which is provided with a hydraulic connection 40 ,
- the injection nozzle 10 is connected to a fuel injection system, which has a high-pressure accumulator 42 for the fuel to be injected. From this lead supply lines 44, 46 to the fuel ports 26, 36, wherein switchable valves 48, 50 are provided, by means of which the connection from the supply lines to the fuel connections can be opened and closed. Either 312-way valves or two 212-way valves each can be used.
- the first nozzle needle 18 When fuel is supplied to the first pressure chamber 24 via the fuel flange 26, the first nozzle needle 18 opens as soon as the opening force generated in the pressure chamber 24 is greater than the closing force generated by the compression spring 28 and optionally the pressure in the stop chamber 27. It can then be injected through the injection holes 14 fuel.
- the hydraulic stop chamber 27 allows a gentle limitation of the opening stroke of the first nozzle needle 18, wherein this limit can be variably controlled by a switchable valve which is assigned to the hydraulic connection 30.
- opening of the second nozzle needle 20 can be brought about by supplying fuel via the fuel connection 36.
- the fuel present in the pressure chamber 34 is then guided through a bore 52 in the interior of the second nozzle needle 20 to the front end thereof, so that the fuel can escape through the injection holes 16.
- an annular gap between the first nozzle needle 18 and the second nozzle needle 20 could be used, in which case a seal against the stop chamber 27 of the first nozzle needle would have to be provided.
- the opening stroke of the second nozzle needle can be variably controlled by the hydraulic stop chamber 37 and the hydraulic port 40.
- the spray cross-section can be freely selected. Any one of the one or the other group of spray holes 14, 16 may be used, or even both spray hole groups at the same time. For example, both the pre- and the main injection at low load by opening the injection holes of a group done while for the Full-load operation both injection-hole groups are used simultaneously for injection. Also can be switched during operation of one injection hole group to another injection hole group to avoid coking the spray holes that are currently not used.
- outwardly opening injectors in which the use of different spray rows causes the nozzle needle must cover large strokes, the present design creates an internal injector, which allows a low choice of the spray cross section with small opening stroke of the corresponding nozzle needle with low construction costs.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fuel-Injection Apparatus (AREA)
Description
Die Erfindung betrifft eine Kraftstoff-Einspritzdüse mit einem Düsenkörper, der eine erste und eine zweite Gruppe von Spritzlöchern aufweist, einer ersten und einer zweiten Düsennadel sowie einer separaten Druckkammer für jede Düsennadel, so daß diese unabhängig voneinander zwischen einer geschlossen Stellung, in der die der entsprechenden Düsennadel zugeordneten Spritzlöcher geschlossen sind, und einer Einspritzstellung verstellbar sind, in der die entsprechenden Spritzlöcher geöffnet sind. Die Erfindung betrifft auch ein Verfahren zum Betreiben einer Kraftstoff-Einspritzdüse.The invention relates to a fuel injector having a nozzle body having a first and a second group of spray holes, a first and a second nozzle needle and a separate pressure chamber for each nozzle needle, so that they independently between a closed position in which the corresponding injection needle associated injection holes are closed, and an injection position are adjustable, in which the corresponding injection holes are opened. The invention also relates to a method for operating a fuel injection nozzle.
Aus der DE 40 23 223 A1 ist eine Kraftstoff-Einspritzdüse der eingangs genannten Art bekannt. Die Spritzlöcher einer Gruppe sind jeweils entlang einem Kreis angeordnet, wobei ein innerer Kreis und ein zu diesem konzentrischer äußerer Kreis gebildet sind. Die den äußeren Spritzlöchern zugeordnete Düsennadel ist als Hohlzylinder ausgeführt, und die den inneren Spritzlöchern zugeordnete Düsennadel ist im Inneren der hohlen Düsennadel angeordnet. Zwischen der inneren Düsennadel und der äußeren Düsennadel ist eine Trennhülse angeordnet, die von einer Druckfeder in Anlage an einen Dichtsitz im Düsenkörper beaufschlagt wird, der zwischen den beiden Spritzlochkreisen ausgebildet ist. Die inneren Spritzlöcher dienen zur Voreinspritzung, während die äußeren Spritzlöcher zur Haupteinspritzung vorgesehen sind. In jedem Fall gewährleistet die Trennhülse während des Öffnens der Düsennadeln, daß die beiden Gruppen von Spritzlöchern voneinander getrennt bleiben.From DE 40 23 223 A1 discloses a fuel injection nozzle of the type mentioned is known. The injection holes of a group are each arranged along a circle, with an inner circle and an outer circle concentric therewith. The nozzle needle associated with the outer spray holes is designed as a hollow cylinder, and the nozzle needle associated with the inner spray holes is arranged in the interior of the hollow nozzle needle. Between the inner nozzle needle and the outer nozzle needle, a separating sleeve is arranged, which is acted upon by a compression spring in contact with a sealing seat in the nozzle body, which is formed between the two injection hole circles. The inner injection holes are used for pre-injection, while the outer injection holes are provided for main injection. In any case, the separating sleeve ensures during opening of the nozzle needles that the two groups of spray holes remain separated.
Nachteilig bei dieser bekannten Konstruktion ist der vergleichsweise hohe Bauaufwand. Da die Spritzlöcher der beiden Gruppen sehr nahe beieinander liegen, müssen auf sehr kleinem Bauraum sowohl die beiden Düsennadeln als auch die Trennhülse untergebracht werden.A disadvantage of this known construction is the comparatively high construction costs. Since the spray holes of the two groups are very close to each other, both the two nozzle needles and the separating sleeve must be accommodated in a very small space.
Aus der DE 42 10 563 A1 ist ein Einspritzventil bekannt, das einen Düsenkörper mit einer ersten und einer zweiten Gruppe von Spritzlöchern aufweist, wobei die Spritzlöcher durch zwei ineinander geführte Düsennadeln geöffnet bzw. geschlossen werden. Die Düsennadeln sind dabei separat ansteuerbar.From DE 42 10 563 A1 an injection valve is known, which has a nozzle body with a first and a second group of spray holes, wherein the injection holes are opened or closed by two nozzle needles guided one inside the other. The nozzle needles are controlled separately.
Die Aufgabe der Erfindung besteht darin, eine Einspritzdüse der eingangs genannten Art dahingehend weiterzubilden, daß ein einfacherer Aufbau erzielt wird. Weiterhin soll eine flexible Nutzung der beiden Gruppen von Spritzlöchern durch eine geeignete Ansteuerung der beiden Düsennadeln ermöglicht werden. Die Aufgabe der Erfindung besteht auch darin, ein Verfahren zum Betreiben einer Einspritzdüse der eingangs genannten Art zu schaffen.The object of the invention is to develop an injector of the type mentioned in such a way that a simpler structure is achieved. Furthermore, a flexible use of the two groups of spray holes to be made possible by a suitable control of the two nozzle needles. The object of the invention is also to provide a method for operating an injection nozzle of the type mentioned.
Gemäß einer bevorzugten Ausführungsform der Erfindung ist für mindestens eine der Düsennadeln eine Anschlagkammer vorgesehen, die mit einem Hydraulikanschluß versehen ist. Auf diese Weise wird ein hydraulischer Hubanschlag für die entsprechende Düsennadel geschaffen, der die Öffnungsbewegung der Düsennadel sanfter begrenzt als ein üblicher mechanischer Hubanschlag. Somit wird eine höhere Lebensdauer der Düsennadel erzielt.According to a preferred embodiment of the invention, a stop chamber is provided for at least one of the nozzle needles, which is provided with a hydraulic connection. In this way, a hydraulic stroke stop for the corresponding nozzle needle is created, which delimits the opening movement of the nozzle needle gentler than a conventional mechanical stroke stop. Thus, a longer life of the nozzle needle is achieved.
Das Verfahren gemäß Patentanspruch 4 bietet den Vorteil, daß beliebig die verschiedenen Spritzlöcher sowohl für die Vor- als auch die Haupteinspritzung verwendet werden können. Auf diese Weise kann ein Varioeffekt erzielt werden, da durch die geeignete Ansteuerung einer der beiden Düsennadeln oder beider Düsennadeln die Gesamtquerschnittsfläche der Einspritzlöcher an die jeweilige Einspritzung angepaßt werden kann. Falls längere Zeit nur eine Lochreihe betätigt wird, kann durch geeignetes, unter Umständen nur kurzzeitiges Umschalten auf die andere Lochreihe verhindert werden, daß die andere Lochreihe verkokt. Das Verfahren gemäß Patentanspruch 4 kann grundsätzlich auch bei einer Einspritzdüse verwendet werden, bei der zwischen den beiden Düsennadeln eine Trennhülse vorgesehen ist, welche die Abdichtung zwischen den verschiedenen Lochreihen erleichtert.The method according to claim 4 offers the advantage that any of the various injection holes can be used for both the pre- and the main injection. In this way, a Varioeffekt can be achieved, since by appropriate control of one of the two nozzle needles or both nozzle needles, the total cross-sectional area of the injection holes can be adapted to the respective injection. If a long time only one row of holes is operated, can be prevented by appropriate, possibly only temporary switching to the other row of holes that verkokt the other row of holes. The method according to claim 4 can in principle also be used in an injection nozzle in which a separating sleeve is provided between the two nozzle needles, which facilitates the sealing between the various rows of holes.
Vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen.Advantageous embodiments of the invention will become apparent from the dependent claims.
Die Erfindung wird nachfolgen unter Bezugnahme auf eine bevorzugte Ausführungsform beschrieben, die in den beigefügten Zeichnungen dargestellt ist. In diesen zeigen:
- Fig. 1 eine erfindungsgemäße Kraftstoff-Einspritzdüse im Querschnitt;
- Fig. 2 schematisch ein Kraftstoff-Einspritzsystem, bei dem die Einspritzdüse von Fig. 1 verwendet wird.
- 1 shows a fuel injection nozzle according to the invention in cross section.
- Fig. 2 shows schematically a fuel injection system in which the injection nozzle of Fig. 1 is used.
Die in Fig. 1 gezeigte Einspritzdüse 10 weist einen Düsenkörper 12 auf, der mit zwei Gruppen von Spritzlöchern 14, 16 versehen ist. Die Spritzlöcher jeder Gruppe sind entlang einem Kreis angeordnet, wobei die beiden gebildeten Kreise konzentrisch sind und der Kreis der ersten Spritzlöcher 14 den von den zweiten Spritzlöchern 16 gebildeten Kreis umgibt.The
Im Inneren des Düsenkörpers sind eine erste Düsennadel 18 und eine zweite Düsennadel 20 angeordnet. Die erste Düsennadel 18 weist einen ringförmigen Querschnitt auf, ist also hohl ausgebildet, und die zweite Düsennadel 20 ist im Inneren der ersten Düsennadel 18 angeordnet. Die erste Düsennadel 18 wirkt mit den Spritzlöchern 14 der ersten Gruppe zusammen, und die zweite Düsennadel 20 wirkt mit den Spritzlöchern 16 der zweiten Gruppe zusammen. Jede Düsennadel liegt dabei so am Düsenkörper 12 an, daß in radialer Richtung betrachtet auf der Innenseite und der Außenseite des entsprechenden Spritzlochkreises abgedichtet wirdInside the nozzle body, a
Die erste Düsennadel 18 ist mit einem Bund 22 versehen, der an dem Düsenkörper 12 anliegt, so daß eine Druckkammer 24 gebildet ist. Diese ist mit einem Kraftstoffanschluß 26 versehen, so daß die Druckkammer 24 mit Druck beaufschlagt werden kann.The
Auf der von der Druckkammer 24 abgewandten Seite des Bundes 22 ist eine Anschlagkammer 27 gebildet, in welcher eine Druckfeder 28 angeordnet ist. Diese stützt sich an dem Düsenkörper 12 ab und beaufschlagt die erste Düsennadel 18 gegen den Düsenkörper 12, so daß die Spritzlöcher 14 geschlossen sind. Die Anschlagkammer 27 ist mit einem Hydraulikanschluß 30 versehen, mittels dem der in der Anschlagkammer 27 herrschende Druck variiert werden kann.On the side facing away from the
In vergleichbarer Weise ist die zweite Düsennadel 20 mit einem Bund 32 versehen, so daß eine Druckkammer 34 gebildet ist, die mit einem Kraftstoffanschluß 36 versehen ist, sowie eine Anschlagkammer 37, in der eine Druckfeder 38 angeordnet ist und die mit einem Hydraulikanschluß 40 versehen ist.Similarly, the
Anhand von Fig. 2 wird nun die Funktionsweise der beschriebenen Einspritzdüse erläutert. Die Einspritzdüse 10 ist an ein Kraftstoff-Einspritzsystem angeschlossen, das einen Hochdruckspeicher 42 für den einzuspritzenden Kraftstoff aufweist. Von diesem führen Versorgungsleitungen 44, 46 zu den Kraftstoffanschlüssen 26, 36, wobei schaltbare Ventile 48, 50 vorgesehen sind, mittels denen die Verbindung von den Versorgungsleitungen zu den Kraftstoffanschlüssen geöffnet und geschlossen werden kann. Es können entweder 312-Wege-Ventile oder jeweils zwei 212-Wege-Ventile verwendet werden.Based on Fig. 2, the operation of the injector described will now be explained. The
Wenn der ersten Druckkammer 24 über den Kraftstoffanschfuß 26 Kraftstoff zugeführt wird, öffnet die erste Düsennadel 18, sobald die in der Druckkammer 24 erzeugte Öffnungskraft größer ist als die von der Druckfeder 28 und gegebenenfalls dem Druck in der Anschlagkammer 27 erzeugte Schließkraft. Es kann dann Kraftstoff durch die Spritzlöcher 14 eingespritzt werden. Die hydraulische Anschlagkammer 27 ermöglicht dabei eine sanfte Begrenzung des Öffnungshubes der ersten Düsennadel 18, wobei diese Begrenzung durch ein schaltbares Ventil, das dem Hydraulikanschluß 30 zugeordnet ist, variabel gesteuert werden kann.When fuel is supplied to the
In vergleichbarer Weise kann durch Zufuhr von Kraftstoff über den Kraftstoffanschluß 36 ein Öffnen der zweiten Düsennadel 20 herbeigeführt werden. Der in der Druckkammer 34 vorliegenden Kraftstoff wird dann durch eine Bohrung 52 im Inneren der zweiten Düsennadel 20 zu deren vorderen Ende geführt, so daß der Kraftstoff durch die Spritzlöcher 16 austreten kann. Alternativ könnte ein Ringspalt zwischen der ersten Düsennadel 18 und der zweiten Düsennadel 20 verwendet werden, wobei dann noch eine Abdichtung gegenüber der Anschlagkammer 27 der ersten Düsennadel vorgesehen werden müßte. Auch der Öffnungshub der zweiten Düsennadel kann durch die hydraulische Anschlagkammer 37 und den Hydraulikanschluß 40 variabel gesteuert werden.In a comparable manner, opening of the
Mit der beschriebenen Einspritzdüse kann der Spritzquerschnitt frei gewählt werden. Es kann beliebig entweder die eine oder die andere Gruppe der Spritzlöcher 14, 16 verwendet werden oder sogar beide Spritzlochgruppen gleichzeitig. Beispielsweise kann sowohl die Vor- als auch die Haupteinspritzung bei geringer Last durch Öffnen der Spritzlöcher einer Gruppe erfolgen, während für den Vollastbetrieb beide Spritzlochgruppen gleichzeitig zur Einspritzung verwendet werden. Auch kann während des Betriebes von der einen Spritzlochgruppe zur anderen Spritzlochgruppe umgeschaltet werden, um ein Verkoken der Spritzlöcher zu vermeiden, die gerade nicht benutzt werden. Im Gegensatz zu außenöffnenden Einspritzdüsen, bei denen die Verwendung von unterschiedlichen Spritzlochreihen dazu führt, daß die Düsennadel große Hübe zurücklegen muß, schafft die vorliegenden Gestaltung eine innenöffnende Einspritzdüse, die bei geringem Bauaufwand eine freie Wahl des Spritzquerschnittes bei kleinem öffnungshub der entsprechenden Düsennadel ermöglicht.With the injection nozzle described, the spray cross-section can be freely selected. Any one of the one or the other group of
Claims (4)
- Fuel injection nozzle (10) having a nozzle body (12) which has a first and a second group of injection holes (14, 16), a first and a second nozzle needle (18, 20) and in each case a separately actuable pressure chamber (24, 34) for each nozzle needle, with the result that the latter can be adjusted independently of one another between a closed position, in which the injection holes which are assigned to the corresponding nozzle needle are closed, and an injection position, in which the corresponding injection holes are open, the two nozzle needles (18, 20) adjoining one another and the first nozzle needle (18) being of hollow configuration and the second nozzle needle (20) extending through the first, characterized in that the fuel for the injection holes (16) which are assigned to the second nozzle needle (20) is fed through a hole (52) in the interior of the second nozzle needle (20), and in that the injection holes (14, 16) are arranged in each case along a circle.
- Injection nozzle according to Claim 1, characterized in that a stop chamber (27, 37) having a hydraulic connection (30, 40) which is assigned to a switchable valve is provided for at least one of the nozzle needles.
- Injection nozzle according to Claim 2, characterized in that a compression spring (28, 38) is arranged in the stop chamber (27, 37).
- Method for operating a fuel injection nozzle (10) according to one of the preceding claims, characterized in that both the injection holes (14) of the first group and the injection holes (16) of the second group are used for a pre-injection and a main injection.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10010863A DE10010863A1 (en) | 2000-03-06 | 2000-03-06 | Fuel injection nozzle; has nozzle body with two groups of nozzle holes opened and closed by two nozzle needles, which are independently operated and are arranged next to each other |
| DE10010863 | 2000-03-06 | ||
| PCT/DE2001/000727 WO2001066932A1 (en) | 2000-03-06 | 2001-02-24 | Injection nozzle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1179134A1 EP1179134A1 (en) | 2002-02-13 |
| EP1179134B1 true EP1179134B1 (en) | 2007-06-06 |
Family
ID=7633690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01915037A Expired - Lifetime EP1179134B1 (en) | 2000-03-06 | 2001-02-24 | Injection nozzle |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US6769634B2 (en) |
| EP (1) | EP1179134B1 (en) |
| JP (1) | JP2003526047A (en) |
| BR (1) | BR0104955A (en) |
| DE (2) | DE10010863A1 (en) |
| PL (1) | PL350628A1 (en) |
| WO (1) | WO2001066932A1 (en) |
Families Citing this family (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0021296D0 (en) * | 2000-08-30 | 2000-10-18 | Ricardo Consulting Eng | A dual mode fuel injector |
| US6725838B2 (en) * | 2001-10-09 | 2004-04-27 | Caterpillar Inc | Fuel injector having dual mode capabilities and engine using same |
| DE10163654A1 (en) * | 2001-12-21 | 2003-07-03 | Bosch Gmbh Robert | Fuel injection system for internal combustion engines |
| FR2840367B1 (en) | 2002-06-04 | 2004-12-10 | Renault Sa | FUEL INJECTOR FOR A DIESEL-TYPE MOTOR VEHICLE INTERNAL COMBUSTION ENGINE |
| US6945475B2 (en) * | 2002-12-05 | 2005-09-20 | Caterpillar Inc | Dual mode fuel injection system and fuel injector for same |
| DE10261175A1 (en) * | 2002-12-20 | 2004-07-08 | Daimlerchrysler Ag | spool valve |
| DE10326045A1 (en) * | 2003-06-10 | 2004-12-30 | Robert Bosch Gmbh | Injection nozzle for internal combustion engines |
| DE10348925A1 (en) * | 2003-10-18 | 2005-05-12 | Bosch Gmbh Robert | Fuel injector with multipart, directly controlled injection valve member |
| DE10352504A1 (en) * | 2003-11-11 | 2005-06-02 | Robert Bosch Gmbh | injection |
| DE10358861A1 (en) * | 2003-12-16 | 2005-07-14 | Robert Bosch Gmbh | injection |
| DE102004015360A1 (en) * | 2004-03-30 | 2005-10-20 | Bosch Gmbh Robert | Fuel injection valve for internal combustion engines |
| DE102004057244A1 (en) * | 2004-11-26 | 2006-06-01 | Robert Bosch Gmbh | fuel Injector |
| EP1693561B1 (en) * | 2005-01-19 | 2008-03-05 | Delphi Technologies, Inc. | Fuel injector |
| US20060196974A1 (en) * | 2005-03-01 | 2006-09-07 | Caterpillar Inc. | Fuel injector having a gradually restricted drain passageway |
| ATE439515T1 (en) * | 2005-04-28 | 2009-08-15 | Delphi Tech Inc | INJECTOR |
| US8286613B2 (en) * | 2006-07-04 | 2012-10-16 | Renault Trucks | Nozzle assembly a fuel injector and an internal combustion engine comprising such an injector |
| JP4265645B2 (en) * | 2006-11-07 | 2009-05-20 | トヨタ自動車株式会社 | Fuel injection device |
| JP4331225B2 (en) * | 2007-04-10 | 2009-09-16 | トヨタ自動車株式会社 | Fuel injection control device for internal combustion engine |
| EP2011993B1 (en) * | 2007-07-06 | 2011-09-14 | Delphi Technologies Holding S.à.r.l. | Dual spray injection nozzle |
| US7685990B2 (en) * | 2007-11-29 | 2010-03-30 | Delphi Technologies, Inc. | Dual mode combustion apparatus and method |
| FI124121B (en) * | 2010-12-01 | 2014-03-31 | Wärtsilä Finland Oy | Internal combustion engine control method and internal combustion engine |
| FI20115418A0 (en) * | 2011-05-03 | 2011-05-03 | Waertsilae Finland Oy | FUEL INJECTION UNIT AND SYSTEM |
| HUE027556T2 (en) * | 2012-06-13 | 2016-10-28 | Delphi Int Operations Luxembourg Sarl | Fuel injector |
| CN104533684B (en) * | 2014-11-26 | 2017-07-28 | 中国北方发动机研究所(天津) | A kind of many band fuel nozzles of double control valve |
| DE102016200237B4 (en) | 2016-01-12 | 2022-01-20 | Ford Global Technologies, Llc | Direct-injection supercharged internal combustion engine with water injection and method for operating such an internal combustion engine |
| NL1041770B1 (en) * | 2016-03-18 | 2017-10-03 | Cereus Tech B V | Improved fuel injection devices. |
| US10392987B2 (en) | 2017-03-29 | 2019-08-27 | Cummins Emission Solutions Inc. | Assembly and methods for NOx reducing reagent dosing with variable spray angle nozzle |
| PL443052A1 (en) * | 2022-12-05 | 2024-06-10 | Progresja Spółka Akcyjna | Hydroinjection nozzle |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5647387B2 (en) * | 1974-08-20 | 1981-11-09 | ||
| DE2710216A1 (en) * | 1977-03-09 | 1978-09-14 | Bosch Gmbh Robert | FUEL INJECTOR |
| DE3036583A1 (en) * | 1980-09-27 | 1982-05-13 | Robert Bosch Gmbh, 7000 Stuttgart | FUEL INJECTION NOZZLE |
| JPS6036772A (en) * | 1983-08-10 | 1985-02-25 | Diesel Kiki Co Ltd | Fuel injection valve |
| DE4115477C2 (en) * | 1990-05-17 | 2003-02-06 | Avl Verbrennungskraft Messtech | Injection nozzle for an internal combustion engine |
| DE4023223A1 (en) | 1990-07-21 | 1992-01-23 | Bosch Gmbh Robert | FUEL INJECTION NOZZLE FOR INTERNAL COMBUSTION ENGINES |
| DE4210563A1 (en) * | 1991-04-15 | 1992-10-22 | Volkswagen Ag | FUEL INJECTION NOZZLE FOR AN INTERNAL COMBUSTION ENGINE WORKING WITH PRIMARY AND MAIN INJECTION |
| US5458292A (en) * | 1994-05-16 | 1995-10-17 | General Electric Company | Two-stage fuel injection nozzle |
| JPH07317624A (en) * | 1994-05-21 | 1995-12-05 | Nippon Clean Engine Lab Co Ltd | Fuel injection valve and advance injection combustion system therewith |
| JPH07324661A (en) * | 1994-05-30 | 1995-12-12 | Mitsubishi Motors Corp | Fuel injection method and fuel injection nozzle for direct injection type diesel engine |
| US5899389A (en) * | 1997-06-02 | 1999-05-04 | Cummins Engine Company, Inc. | Two stage fuel injector nozzle assembly |
| GB9916464D0 (en) * | 1999-07-14 | 1999-09-15 | Lucas Ind Plc | Fuel injector |
| GB9922408D0 (en) * | 1999-09-23 | 1999-11-24 | Lucas Ind Plc | Fuel injector |
| US6637675B2 (en) * | 2001-07-13 | 2003-10-28 | Cummins Inc. | Rate shaping fuel injector with limited throttling |
-
2000
- 2000-03-06 DE DE10010863A patent/DE10010863A1/en not_active Ceased
-
2001
- 2001-02-24 US US09/959,731 patent/US6769634B2/en not_active Expired - Fee Related
- 2001-02-24 JP JP2001565523A patent/JP2003526047A/en active Pending
- 2001-02-24 PL PL01350628A patent/PL350628A1/en unknown
- 2001-02-24 EP EP01915037A patent/EP1179134B1/en not_active Expired - Lifetime
- 2001-02-24 BR BR0104955-0A patent/BR0104955A/en not_active Application Discontinuation
- 2001-02-24 WO PCT/DE2001/000727 patent/WO2001066932A1/en active IP Right Grant
- 2001-02-24 DE DE50112588T patent/DE50112588D1/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| None * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2001066932A1 (en) | 2001-09-13 |
| EP1179134A1 (en) | 2002-02-13 |
| US6769634B2 (en) | 2004-08-03 |
| JP2003526047A (en) | 2003-09-02 |
| BR0104955A (en) | 2002-02-19 |
| DE10010863A1 (en) | 2001-09-27 |
| US20030098371A1 (en) | 2003-05-29 |
| DE50112588D1 (en) | 2007-07-19 |
| PL350628A1 (en) | 2003-01-27 |
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