DE102006050032A1 - Injector, particularly common-rail injector, for injecting fuel into combustion chambers of internal-combustion engines, has control valve, which influences pressure in control chamber - Google Patents
Injector, particularly common-rail injector, for injecting fuel into combustion chambers of internal-combustion engines, has control valve, which influences pressure in control chamber Download PDFInfo
- Publication number
- DE102006050032A1 DE102006050032A1 DE200610050032 DE102006050032A DE102006050032A1 DE 102006050032 A1 DE102006050032 A1 DE 102006050032A1 DE 200610050032 DE200610050032 DE 200610050032 DE 102006050032 A DE102006050032 A DE 102006050032A DE 102006050032 A1 DE102006050032 A1 DE 102006050032A1
- Authority
- DE
- Germany
- Prior art keywords
- valve
- injector
- injector according
- hubanschlagsfläche
- pressure
- 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- Withdrawn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
- 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
- F02M47/027—Electrically 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
- 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
- F02M63/0014—Valves characterised by the valve actuating means
- F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
-
- 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
- F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
- F02M63/004—Sliding valves, e.g. spool valves, i.e. whereby the closing member has a sliding movement along a seat for opening and closing
-
- 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
- F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
- F02M63/0078—Valve member details, e.g. special shape, hollow or fuel passages in the valve member
- F02M63/008—Hollow valve members, e.g. members internally guided
-
- 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
-
- 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
- F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
- F02M2200/304—Fuel-injection apparatus having mechanical parts, the movement of which is damped using hydraulic 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
- F02M2547/00—Special features for fuel-injection valves actuated by fluid pressure
- F02M2547/003—Valve inserts containing control chamber and valve piston
Landscapes
- 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)
Abstract
Description
Stand der TechnikState of the art
Die Erfindung betrifft einen Injektor nach dem Oberbegriff des Anspruchs 1.The The invention relates to an injector according to the preamble of the claim 1.
Die
Offenbarung der ErfindungDisclosure of the invention
Technische AufgabeTechnical task
Der Erfindung liegt daher die Aufgabe zugrunde, einen Injektor vorzuschlagen, bei dem Anschlaggreller der Ventilhülse an der Hubanschlagsfläche auf einfache Weise, mit minimierten negativen Auswirkungen auf die Schaltzeit gedämpft werden.Of the The invention is therefore based on the object of proposing an injector, at the stop flash of the valve sleeve on the Hubanschlagsfläche simple way, with minimized negative effects on the switching time muted become.
Technische LösungTechnical solution
Diese Aufgabe wird mit den Merkmalen des Anspruchs 1 gelöst. Die Unteransprüche geben günstige Weiterbildungen der Erfindung an. Zudem fallen in den Rahmen der Erfindung alle Kombinationen aus zumindest zwei der in der Beschreibung, der Zeichnung und/oder den Ansprüchen offenbarten Merkmale.These The object is achieved with the features of claim 1. The under claims give cheap Further developments of the invention. In addition, fall within the framework of Invention all combinations of at least two of the in the description, the drawing and / or the claims disclosed features.
Der Erfindung liegt der Gedanke zugrunde, anstelle einer ebenen Hubanschlagsfläche eine konisch ausgeformte Hubanschlagsfläche vorzusehen, die mit einem entsprechenden Gegenkonus der Ventilhülse oder eines mit der Ventilhülse fest verbundenen Bauteils zusammenwirkt. Durch das Vorsehen eines kegelförmigen Hubanschlags wird eine gute Anschlags dämpfung erreicht und Anschlaggreller wirksam verhindert. Dabei wird mit Vorteil nur eine kleine radiale Hubanschlagsfläche benötigt, um eine große hydraulische sowie mechanische Anschlagsdämpfung zu realisieren. Hierdurch können negative Auswirkungen der Anschlagsdämpfung auf die Schließ- und/oder Öffnungszeit des Steuerventils erheblich reduziert werden. Bei dem Steuerventil handelt es sich bevorzugt um ein in axialer Richtung druckausgeglichenes Ventil. Bei einem in axialer Richtung druckausgeglichenen Steuerventil wirken auf den Ventilkolben bei geschlossenem Steuerventil keine oder nur minimale Druckkräfte in axialer Richtung. Eine Realisierung eines derartigen axialdruckausgeglichenen Steuerventils kann auf einfache Weise dadurch realisiert werden, dass eine Ventilhülse mit einer Hülsenbohrung eingesetzt wird, wobei die Hülsenbohrung den gleichen Durchmesser hat, wie der Ventilsitz. Die Ventilhülse liegt bevorzugt mit ihrem Innendurchmesser dichtend an der Ventilsitzfläche an. Durch das Vorsehen eines axial-druckausgeglichenen Steuerventils werden nur geringe Federkräfte und/oder geringe Aktuator-Schaltkräfte, insbesondere geringe Magnetkräfte zur Betätigung und/oder zum Halten des Steuerventils in seiner Schließstellung benötigt. Dies hat wiederum vorteilhafte Auswirkungen auf. das Anschlagverhalten des Ventilkolbens, insbesondere einer Ventilhülse, sowie auf den maximal benötigten Bauraum. Weiterhin können kleinere Ventilkolbenhübe und somit schnellere Schaltzeiten realisiert werden, wodurch die Mehrfacheinspritzfähigkeit verbessert wird.Of the Invention is based on the idea, instead of a flat Hubanschlagsfläche a conically shaped Hubanschlagsfläche provide that with a corresponding counter-cone of the valve sleeve or one with the valve sleeve firmly Connected component cooperates. By providing a conical stroke stop will be a good stop damping reached and effectively prevented stop burr. It is with Advantage only a small radial Hubanschlagsfläche needed to a large hydraulic as well as mechanical stop damping to realize. This allows negative impact of the impact attenuation on the closing and / or opening time of the control valve can be significantly reduced. At the control valve it is preferably a pressure-balanced in the axial direction Valve. In a pressure balanced in the axial direction control valve no effect on the valve piston with the control valve closed or only minimal pressure forces in the axial direction. A realization of such an axial pressure balanced Control valve can be easily realized by that a valve sleeve with a sleeve bore is used, wherein the sleeve bore has the same diameter as the valve seat. The valve sleeve is located preferably with its inner diameter sealingly against the valve seat surface. By providing an axial-pressure compensated control valve only small spring forces and / or low actuator switching forces, in particular low magnetic forces for Actuation and / or needed to hold the control valve in its closed position. This again has beneficial effects. the stop behavior the valve piston, in particular a valve sleeve, as well as the maximum required Space. Furthermore you can smaller valve piston strokes and thus faster switching times are realized, whereby the Multiple injection capability is improved.
Zur Aufnahme der in axialer Richtung wirkenden Druckkräfte ist mit Vorteil ein Bolzen vorgesehen, der in axialer Richtung innerhalb der Ventilhülse aufgenommen ist. Dieser Bolzen gibt die Druckkräfte an einen Injektorkörper weiter.to Recording the acting in the axial direction of compressive forces provided with advantage a bolt, which in the axial direction within the valve sleeve is included. This bolt transmits the pressure forces to an injector body.
Hierzu kann der Bolzen entweder fest mit dem Injektorkörper verbunden oder einstückig mit diesem ausgebildet sein. Es ist auch denkbar, dass der Bolzen keine feste Verbindung zu dem Injektorkörper aufweist, sondern sich lediglich an diesem abstützt. Dabei wird der Bolzen beispielsweise von dem auf ihn wirkenden Kraftstoffdruck an den Injektorkörper angedrückt.For this The bolt can either be firmly connected to the injector body or integral with this be educated. It is also conceivable that the bolt is not fixed Connection to the injector body has, but is supported only on this. This will be the bolt For example, from the fuel pressure acting on it to the injector pressed.
Von besonderem Vorteil ist es, wenn die kegelförmige Hubanschlagsfläche an dem Bolzen angeformt ist. Hierdurch wird die Konzentrizität der Hubanschlagsfläche zur Verstellachse der Ventilhülse wesentlich erhöht.Of particular advantage is when the ke Gelförmige Hubanschlagsfläche is integrally formed on the bolt. As a result, the concentricity of Hubanschlagsfläche is significantly increased to the adjustment of the valve sleeve.
Etwaige Winkelfehler zwischen Ventilhülse und Hubanschlagsfläche können gemäß einer vorteilhaften Weiterbildung der Erfindung dadurch reduziert werden, dass die Ventilhülse, vorzugsweise hochdruckdicht, mit ihrer inneren Mantelfläche an der äußeren Mantelfläche des Bolzens geführt ist.any Angle error between valve sleeve and Hubanschlagsfläche can according to a advantageous development of the invention can be reduced thereby that the valve sleeve, preferably high pressure-tight, with its inner circumferential surface on the outer surface of the Bolzens led is.
Eine zusätzliche Dämpfung des Anschlags der Ventilhülse an der Hubanschlagsfläche kann gemäß einer vorteilhaften Weiterbildung der Erfindung dadurch erreicht werden, dass innerhalb der Ventilhülse ein Dämpfungsraum vorgesehen ist, der einerseits von der Ventilhülse und andererseits, von der Stirnfläche des Bolzens begrenzt ist. Zur Erzielung der Dämpfungseigenschaft ist der Dämpfungsraum mit Vorteil über mindestens eine Drossel mit einer Ventilsitzkammer hydraulisch verbunden, wobei die Ventilsitzkammer wiederum hydraulisch mit der Steuerkammer verbunden ist. Über die Ventilsitzkammer kann Kraftstoff aus der Steuerkammer bei geöffnetem Steuerventil in einem Bereich mit niedrigem Kraftstoffdruck abfließen.A additional damping the stop of the valve sleeve at the Hubanschlagsfläche can according to a advantageous development of the invention can be achieved thereby that inside the valve sleeve a damping room is provided, on the one hand by the valve sleeve and on the other hand, from the end face of the Bolzens is limited. To achieve the damping property of the Damping room with Advantage over at least one throttle hydraulically connected to a valve seat chamber, wherein the valve seat chamber in turn hydraulically with the control chamber connected is. about the valve seat chamber may release fuel from the control chamber when open Flow control valve in a range of low fuel pressure.
In Weiterbildung der Erfindung ist mit Vorteil vorgesehen, dass der Aktuator als Elektromagnetantrieb ausgebildet ist, wobei mindestens eine Ankerplatte vorgesehen ist, die fest mit dem Ventilkolben, insbesondere der Ventilhülse, verbunden oder einstückig mit diesem ausgebildet ist, um den Ventilkolben bei Bestromung des Elektromagnetantriebes in axialer Richtung zu verstellen. Selbstverständlich ist es denkbar, anstelle eines Elektromagnetantriebs beispielsweise einen Piezoaktuator vorzusehen.In Development of the invention is provided with advantage that the Actuator is designed as an electromagnetic drive, wherein at least an anchor plate is provided which is fixed to the valve piston, in particular the valve sleeve, connected or in one piece is formed with this to the valve piston during energization of the Electromagnetic actuator to adjust in the axial direction. Of course it is conceivable, instead of an electromagnetic drive, for example a Provide piezoelectric actuator.
Bevorzugt weist der Ventilkolben, insbesondere an seinem oberen, der Ventilsitzfläche abgewandten Bereich einen Innenkonus auf, der mit einem Außenkonus (Hubanschlagsfläche) zusammenwirkt. Dabei sind Innenkonus und Außenkonus formkongruent zueinander ausgebildet. Alternativ dazu ist es denkbar, dass der Ventilkolben einen Außenkonus aufweist und mit einer formkongruenten innenkonusförmigen Hubanschlagsfläche, beispielsweise am Injektorkörper oder an einem mit diesem verbundenen Bauteil, insbesondere einem Bolzen, zusammenwirkt.Prefers has the valve piston, in particular at its upper, the valve seat surface facing away Area an inner cone, which interacts with an outer cone (Hubanschlagsfläche). Here are inner cone and outer cone form congruent with each other. Alternatively, it is conceivable the valve piston has an outer cone and with a shape-congruent inner cone-shaped Hubanschlagsfläche, for example on the injector body or on a component connected thereto, in particular a Bolt, cooperates.
Kurze Beschreibung der ZeichnungenBrief description of the drawings
Weitere
Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus
der nachfolgenden Beschreibung eines bevorzugten Ausführungsbeispieles
sowie anhand der Zeichnung; diese zeigt in der einzigen
Ausführungsform der ErfindungEmbodiment of the invention
In
der einzigen
Die
Düsenspannmutter
Innerhalb
des Düsenkörpers
Wenn
die Düsennadel
Die
Düsennadel
Innerhalb
des Bauteils
Die
Düsennadel
Die
Steuerkammer
Mittels
eines elektromagnetischen Aktuators
Durch
die Vorspannfeder
Die
Durchflussquerschnitte der Zulaufdrossel
Der
Niederdruckraum
Das
Steuerventil
Die
Ventilhülse
Die
Schraubenfeder
Der
untere Teilabschnitt
Die
in der Zeichnungsebene untere Stirnfläche
Bei
dem Steuerventil
Claims (10)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200610050032 DE102006050032A1 (en) | 2006-10-24 | 2006-10-24 | Injector, particularly common-rail injector, for injecting fuel into combustion chambers of internal-combustion engines, has control valve, which influences pressure in control chamber |
PCT/EP2007/058921 WO2008049666A1 (en) | 2006-10-24 | 2007-08-28 | Injector having a control valve which has a conical stroke stop face |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200610050032 DE102006050032A1 (en) | 2006-10-24 | 2006-10-24 | Injector, particularly common-rail injector, for injecting fuel into combustion chambers of internal-combustion engines, has control valve, which influences pressure in control chamber |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102006050032A1 true DE102006050032A1 (en) | 2008-04-30 |
Family
ID=38752468
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200610050032 Withdrawn DE102006050032A1 (en) | 2006-10-24 | 2006-10-24 | Injector, particularly common-rail injector, for injecting fuel into combustion chambers of internal-combustion engines, has control valve, which influences pressure in control chamber |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE102006050032A1 (en) |
WO (1) | WO2008049666A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008128884A1 (en) * | 2007-04-19 | 2008-10-30 | Robert Bosch Gmbh | Fuel injector with a magnetic valve |
WO2009135708A1 (en) * | 2008-05-06 | 2009-11-12 | Robert Bosch Gmbh | Fuel injector comprising a control valve having a compression stage |
WO2009138279A1 (en) * | 2008-05-16 | 2009-11-19 | Robert Bosch Gmbh | Solenoid valve having an armature slot configuration |
WO2009146974A1 (en) * | 2008-06-02 | 2009-12-10 | Robert Bosch Gmbh | Fuel injector with perforated seat nozzle |
EP2146085A1 (en) | 2008-07-16 | 2010-01-20 | Robert Bosch GmbH | Fuel injection valve device |
EP3333408A1 (en) * | 2016-12-06 | 2018-06-13 | Robert Bosch GmbH | Electromagnetically operated control valve for a fuel injector, fuel injector |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007011317A1 (en) * | 2007-03-08 | 2008-09-11 | Robert Bosch Gmbh | Fuel injector with an improved version of a control valve for controlling a nozzle needle |
CN113250878B (en) * | 2021-06-18 | 2022-08-16 | 中国北方发动机研究所(天津) | Control plunger part of common rail fuel injector |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9322850D0 (en) * | 1993-11-05 | 1993-12-22 | Lucas Ind Plc | Control valve |
GB9526522D0 (en) * | 1995-12-23 | 1996-02-28 | Lucas Ind Plc | Valve arrangement |
DE19643430C2 (en) * | 1996-10-22 | 2000-05-04 | Man B & W Diesel As | Large engine |
DE10132249A1 (en) * | 2001-07-04 | 2003-01-23 | Bosch Gmbh Robert | Fuel injector with force-balanced control valve |
-
2006
- 2006-10-24 DE DE200610050032 patent/DE102006050032A1/en not_active Withdrawn
-
2007
- 2007-08-28 WO PCT/EP2007/058921 patent/WO2008049666A1/en active Application Filing
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008128884A1 (en) * | 2007-04-19 | 2008-10-30 | Robert Bosch Gmbh | Fuel injector with a magnetic valve |
WO2009135708A1 (en) * | 2008-05-06 | 2009-11-12 | Robert Bosch Gmbh | Fuel injector comprising a control valve having a compression stage |
WO2009138279A1 (en) * | 2008-05-16 | 2009-11-19 | Robert Bosch Gmbh | Solenoid valve having an armature slot configuration |
WO2009146974A1 (en) * | 2008-06-02 | 2009-12-10 | Robert Bosch Gmbh | Fuel injector with perforated seat nozzle |
EP2146085A1 (en) | 2008-07-16 | 2010-01-20 | Robert Bosch GmbH | Fuel injection valve device |
EP3333408A1 (en) * | 2016-12-06 | 2018-06-13 | Robert Bosch GmbH | Electromagnetically operated control valve for a fuel injector, fuel injector |
Also Published As
Publication number | Publication date |
---|---|
WO2008049666A1 (en) | 2008-05-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R012 | Request for examination validly filed |
Effective date: 20130711 |
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R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |