EP2798195B1 - Lever device and a fuel injection valve - Google Patents
Lever device and a fuel injection valve Download PDFInfo
- Publication number
- EP2798195B1 EP2798195B1 EP12813825.2A EP12813825A EP2798195B1 EP 2798195 B1 EP2798195 B1 EP 2798195B1 EP 12813825 A EP12813825 A EP 12813825A EP 2798195 B1 EP2798195 B1 EP 2798195B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lever
- injection valve
- housing
- coupled
- output element
- 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.)
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Links
- 238000002347 injection Methods 0.000 title claims description 36
- 239000007924 injection Substances 0.000 title claims description 36
- 239000000446 fuel Substances 0.000 title description 3
- 230000009471 action Effects 0.000 claims description 21
- 230000008878 coupling Effects 0.000 claims description 15
- 238000010168 coupling process Methods 0.000 claims description 15
- 238000005859 coupling reaction Methods 0.000 claims description 15
- 239000012530 fluid Substances 0.000 claims description 7
- 230000008901 benefit Effects 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 230000001419 dependent effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Images
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
- 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
- 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
- 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
- F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
-
- 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
- F02M63/0026—Valves characterised by the valve actuating means electrical, e.g. using solenoid using piezoelectric or magnetostrictive actuators
-
- 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
- F02M2200/701—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger mechanical
- F02M2200/702—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger mechanical with actuator and actuated element moving in different directions, e.g. in opposite directions
Definitions
- Injection valves for an internal combustion engine of a motor vehicle may have actuators which are designed in particular as piezoactuators.
- Such actuators have a piezoceramic material.
- Such actuators may change their longitudinal extent depending on an electric field acting in the piezoceramic material.
- a lever device can be provided which translates the stroke of the actuator.
- Piezoelectric actuators which are used as actuators, in particular in injection valves for internal combustion engines in motor vehicles, are arranged in a housing so that a lifting movement in the axial direction can be performed.
- WO02 / 057622 A1 discloses a valve for controlling fluids, comprising an actuator and a mechanical translator for translating a stroke of the actuator. Further, a return element and a valve element is provided.
- the translator is designed as a kidney-shaped rocker arm, which has punctiform bearing points.
- the at least one lever element is rotationally fixed relative to the output element with respect to the force action axis.
- the at least one lever element is prevented from rotating with respect to the output element, whereby changes in the injection quantities, the can arise through such a rotational movement of the at least one lever element, can be avoided.
- the at least one lever element is positioned so reliably relative to the output element. As a result, a permanently reliable operation of the lever device can be made possible.
- the coupling portion of the lever member has a flat wall portion, and the output member has a flat wall portion.
- the planar wall section of the lever element interacts with the planar wall section of the output element in such a way that the at least one lever element is coupled to the output element in a rotationally fixed manner with respect to the force action axis.
- planar wall section of the lever element and the planar wall section of the output element are in particular planar in a plane which is approximately plane-parallel to the force action axis.
- the coupling portion of the lever member has a further planar wall portion, and the housing recess has a flat wall portion.
- the planar wall section of the lever element acts in such a way with the planar wall section of the housing recess together, that the at least one lever element is coupled to the housing rotationally fixed with respect to the force action axis.
- planar wall section of the lever element and the planar wall section of the housing recess are in particular planar in a plane which is approximately plane-parallel to the force action axis.
- the coupling portion of the lever member has a recess
- the housing has a pin.
- the pin is arranged in the recess of the coupling portion of the lever member such that the at least one lever member is rotatably coupled to the housing with respect to the force action axis.
- the invention is characterized by an injection valve, which comprises the lever device and a valve needle.
- the valve needle is coupled to the output element or forms the output element.
- the drive element and the valve needle are coupled to one another via the lever device in such a way that, depending on a control signal, the valve needle prevents fluid flow through the injection valve in a closed position and otherwise releases it. Due to the coupling of the lever member relative to the housing or the valve needle, such a valve can be operated permanently reliable.
- FIG. 1 shows a valve, in particular an injection valve 10 for an internal combustion engine in a motor vehicle.
- the injection valve 10 has a housing 12.
- the housing 12 has an intermediate disc 12a, which is arranged between two tubular sections 12b of the housing 12.
- the washer 12a and the two tubular portions 12b are fixedly coupled together and together form the housing 12.
- a housing recess 14 with a fluid inlet 16 and a fluid outlet 18 is formed in the housing 12.
- fuel can be supplied to the injection valve 10 in the region of the fluid inlet 16.
- the injector 10 further includes a drive element 26 coupled to the actuator 24.
- the drive element 26 preferably includes a pin or rod that transmits the stroke and a drive force of the actuator 24.
- the actuator 24 and the drive element 26 are coupled together in the axial direction.
- a stroke of the drive element 26 is dependent on an axial extent of the piezoelectric actuator 24, which is dependent on a control signal which can be supplied to the piezoelectric actuator 24.
- the drive element 26 further comprises a preferably bell-shaped component 27.
- a lever device 28 is further arranged.
- the lever device 28 comprises the drive element 26 and a lever element 30 or a plurality of lever elements 30.
- the lever device 28 has two lever elements 30.
- the lever elements 30 are coupled to the drive element 26.
- the lever elements 30 are coupled to an output element 32.
- the output element 32 is arranged in the housing recess 14.
- the output element 32 is preferably coupled to the valve needle 20.
- the valve needle 20 may also form the output element 32.
- the drive member 26, the lever member 30 and the output member 32 cooperate such that the stroke of the drive member 26 is transmitted to the valve needle 20 and that the valve needle 20 is thus moved to its closed position or to an open position.
- a force action axis A of a drive force of the drive member 26 passes through the drive member 26 and as a force action axis of a driven force further through the Output element 32.
- the force action axis is offset by the drive element 26 to the force action axis by the output member 32nd
- FIG. 2 shows an embodiment of the lever device 28 in a cross section.
- the coupling portions 34 of the lever members 30 have planar wall portions 38.
- the housing recess 14 of the housing 12 has two planar wall portions 40, which face each other with respect to the force A axis.
- one of the planar wall sections 38 of one of the lever elements 30 acts with one of plan wall portions 40 of the housing recess 14 together. It can thereby be achieved that the lever element 30 is coupled to the housing 12 in a rotationally fixed manner with respect to the force action axis A.
- the rotationally fixed coupling of the lever members 30 to the housing 12 it is possible that the contact conditions between the lever members 30 and the housing 12 can be kept constant over a long period of time.
- the injection behavior of the injection valve 10 can be kept constant over a long period of time.
- the coupling sections 34 of the lever elements 30 each have a recess 44.
- the pins 42 engage in the recesses 44 of the coupling sections 34 of the lever elements 30. It can thus be achieved that the lever elements 30 are rotationally fixedly coupled to the intermediate disk 12a of the housing 12 with respect to the force action axis A.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Fuel-Injection Apparatus (AREA)
Description
Die Erfindung betrifft eine Hebelvorrichtung für ein Einspritzventil mit einem Gehäuse, mindestens einem Hebelelement, einem Antriebselement und einem Abtriebselement. Die Erfindung betrifft ferner ein Einspritzventil für eine Brennkraftmaschine eines Kraftfahrzeugs, das die Hebelvorrichtung und eine Ventilnadel aufweist, die mit dem Abtriebselement gekoppelt ist oder die das Abtriebselement bildet.The invention relates to a lever device for an injection valve having a housing, at least one lever element, a drive element and an output element. The invention further relates to an injection valve for an internal combustion engine of a motor vehicle, which comprises the lever device and a valve needle which is coupled to the output element or which forms the output element.
Einspritzventile für eine Brennkraftmaschine eines Kraftfahrzeugs können Aktuatoren aufweisen, die insbesondere als Piezoaktuatoren ausgebildet sind. Derartige Aktuatoren weisen ein piezokeramisches Material auf. Derartige Aktuatoren können ihre Längsausdehnung verändern abhängig von einem elektrischen Feld, das in dem piezokeramischen Material wirkt. Des Weiteren kann eine Hebelvorrichtung vorgesehen sein, die den Hub des Aktuators übersetzt.Injection valves for an internal combustion engine of a motor vehicle may have actuators which are designed in particular as piezoactuators. Such actuators have a piezoceramic material. Such actuators may change their longitudinal extent depending on an electric field acting in the piezoceramic material. Furthermore, a lever device can be provided which translates the stroke of the actuator.
Piezoelektrische Aktuatoren, die als Stellglieder genutzt werden, insbesondere in Einspritzventilen für Brennkraftmaschinen in Kraftfahrzeugen, sind so in einem Gehäuse angeordnet, dass eine Hubbewegung in axialer Richtung ausgeführt werden kann.Piezoelectric actuators, which are used as actuators, in particular in injection valves for internal combustion engines in motor vehicles, are arranged in a housing so that a lifting movement in the axial direction can be performed.
Die Aufgabe der Erfindung ist, eine Hebelvorrichtung für ein Einspritzventil zu schaffen, die dauerhaft zuverlässig ist. Die Aufgabe ist ferner, ein Einspritzventil zu schaffen, das eine lange Lebensdauer hat.The object of the invention is to provide a lever device for an injection valve, which is permanently reliable. The object is also to provide an injection valve, which has a long life.
Die Aufgabe wird gelöst durch die Merkmale der unabhängigen Patentansprüche. Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen gekennzeichnet.The object is solved by the features of the independent claims. Advantageous developments of the invention are characterized in the subclaims.
Gemäß eines ersten Aspekts zeichnet sich die Erfindung aus durch eine Hebelvorrichtung für ein Einspritzventil, mit einem Gehäuse, das eine Gehäuseausnehmung aufweist, mindestens einem Hebelelement, das in der Gehäuseausnehmung angeordnet ist, einem Antriebselement, das in der Gehäuseausnehmung angeordnet ist und mit dem mindestens einen Hebelelement gekoppelt ist zum Einwirken auf das mindestens eine Hebelelement in Richtung einer Kraftwirkungsachse, und einem in der Gehäuseausnehmung angeordneten Abtriebselement. Das Abtriebselement ist derart mit dem mindestens einen Hebelelement gekoppelt, dass das Abtriebselement mittels des mindestens einen Hebelelements in Richtung der Kraftwirkungsachse bewegbar ist. Das mindestens eine Hebelelement weist einen Kopplungsabschnitt auf, der derart ausgebildet oder angeordnet ist, dass das mindestens eine Hebelelement mit dem Abtriebselement drehfest bezüglich der Kraftwirkungsachse gekoppelt ist.According to a first aspect, the invention is characterized by a lever device for an injection valve, with a housing having a housing recess, at least one lever element which is arranged in the housing recess, a drive element which is arranged in the housing recess and with the at least one Lever element is coupled for acting on the at least one lever element in the direction of a force action axis, and arranged in the housing recess output member. The output element is coupled to the at least one lever element such that the output element is movable by means of the at least one lever element in the direction of the force action axis. The at least one lever element has a coupling section which is designed or arranged such that the at least one lever element is coupled to the output element in a rotationally fixed manner with respect to the force action axis.
Das mindestens eine Hebelelement ist gegenüber dem Abtriebselement rotatorisch fixiert bezüglich der Kraftwirkungsachse.The at least one lever element is rotationally fixed relative to the output element with respect to the force action axis.
Dies hat den Vorteil, dass das mindestens eine Hebelelement gegenüber dem Abtriebselement an einer Rotationsbewegung gehindert ist, wodurch Veränderungen der Einspritzmengen, die durch eine derartige Rotationsbewegung des mindestens einen Hebelelements entstehen können, vermieden werden können. Das mindestens eine Hebelelement ist so zuverlässig gegenüber dem Abtriebselement positioniert. Dadurch kann ein dauerhaft zuverlässiger Betrieb der Hebelvorrichtung ermöglicht werden. Der Kopplungsabschnitt des Hebelelements weist einen planen Wandabschnitt auf, und das Abtriebselement weist einen planen Wandabschnitt auf. Der plane Wandabschnitt des Hebelelements wirkt derart mit dem planen Wandabschnitt des Abtriebselements zusammen, dass das mindestens eine Hebelelement mit dem Abtriebselement drehfest bezüglich der Kraftwirkungsachse gekoppelt ist.This has the advantage that the at least one lever element is prevented from rotating with respect to the output element, whereby changes in the injection quantities, the can arise through such a rotational movement of the at least one lever element, can be avoided. The at least one lever element is positioned so reliably relative to the output element. As a result, a permanently reliable operation of the lever device can be made possible. The coupling portion of the lever member has a flat wall portion, and the output member has a flat wall portion. The planar wall section of the lever element interacts with the planar wall section of the output element in such a way that the at least one lever element is coupled to the output element in a rotationally fixed manner with respect to the force action axis.
Der plane Wandabschnitt des Hebelelements und der plane Wandabschnitt des Abtriebselements sind insbesondere plan in einer Ebene, die annähernd planparallel zur Kraftwirkungsachse ist.The planar wall section of the lever element and the planar wall section of the output element are in particular planar in a plane which is approximately plane-parallel to the force action axis.
Dies hat den Vorteil, dass die planen Wandabschnitte des Hebelelements und des Abtriebselements fertigungstechnisch besonders einfach zu realisieren sind. Damit können das Hebelelement und das Abtriebselement in sehr einfacher und zuverlässiger Weise hergestellt werden. Des Weiteren kann eine Rotationsbewegung des Hebelelements gegenüber dem Abtriebselement zuverlässig verhindert werden.This has the advantage that the planar wall sections of the lever element and the output element are particularly easy to realize in terms of manufacturing technology. Thus, the lever member and the output member can be produced in a very simple and reliable manner. Furthermore, a rotational movement of the lever element relative to the output element can be reliably prevented.
Beispielsweise, nicht Teil der Erfindung, weist der Kopplungsabschnitt des Hebelelements einen weiteren planen Wandabschnitt auf, und die Gehäuseausnehmung weist einen planen Wandabschnitt auf. Der plane Wandabschnitt des Hebelelements wirkt derart mit dem planen Wandabschnitt der Gehäuseausnehmung zusammen, dass das mindestens eine Hebelelement mit dem Gehäuse drehfest bezüglich der Kraftwirkungsachse gekoppelt ist.For example, not part of the invention, the coupling portion of the lever member has a further planar wall portion, and the housing recess has a flat wall portion. The planar wall section of the lever element acts in such a way with the planar wall section of the housing recess together, that the at least one lever element is coupled to the housing rotationally fixed with respect to the force action axis.
Der plane Wandabschnitt des Hebelelements und der plane Wandabschnitt der Gehäuseausnehmung sind insbesondere plan in einer Ebene, die annähernd planparallel zur Kraftwirkungsachse ist.The planar wall section of the lever element and the planar wall section of the housing recess are in particular planar in a plane which is approximately plane-parallel to the force action axis.
Dies hat den Vorteil, dass das Hebelelement und das Gehäuse in sehr einfacher Weise gefertigt sein können. Des Weiteren kann eine Rotationsbewegung des Hebelelements gegenüber dem Gehäuse zuverlässig verhindert sein.This has the advantage that the lever element and the housing can be made in a very simple manner. Furthermore, can a rotational movement of the lever member relative to the housing to be reliably prevented.
In einem weiteren Beispiel weist der Kopplungsabschnitt des Hebelelements eine Ausnehmung auf, und das Gehäuse weist einen Stift auf. Der Stift ist derart in der Ausnehmung des Kopplungsabschnitts des Hebelelements angeordnet, dass das mindestens eine Hebelelement mit dem Gehäuse drehfest bezüglich der Kraftwirkungsachse gekoppelt ist. Dies hat den Vorteil, dass so eine Rotationsbewegung des Hebelelements gegenüber dem Gehäuse besonders zuverlässig verhindert werden kann.In another example, the coupling portion of the lever member has a recess, and the housing has a pin. The pin is arranged in the recess of the coupling portion of the lever member such that the at least one lever member is rotatably coupled to the housing with respect to the force action axis. This has the advantage that such a rotational movement of the lever member relative to the housing can be particularly reliably prevented.
Gemäß eines zweiten Aspekts zeichnet sich die Erfindung aus durch ein Einspritzventil, das die Hebelvorrichtung und eine Ventilnadel umfasst. Die Ventilnadel ist mit dem Abtriebselement gekoppelt oder bildet das Abtriebselement. Das Antriebselement und die Ventilnadel sind derart über die Hebelvorrichtung miteinander gekoppelt, dass abhängig von einem Stellsignal die Ventilnadel in einer Schließposition einen Fluidfluss durch das Einspritzventil verhindert und diesen ansonsten freigibt. Aufgrund der Kopplung des Hebelelements gegenüber dem Gehäuse beziehungsweise der Ventilnadel kann ein solches Ventil dauerhaft zuverlässig betrieben werden.According to a second aspect, the invention is characterized by an injection valve, which comprises the lever device and a valve needle. The valve needle is coupled to the output element or forms the output element. The drive element and the valve needle are coupled to one another via the lever device in such a way that, depending on a control signal, the valve needle prevents fluid flow through the injection valve in a closed position and otherwise releases it. Due to the coupling of the lever member relative to the housing or the valve needle, such a valve can be operated permanently reliable.
Ausführungsbeispiele der Erfindung sind im Folgenden anhand der schematischen Zeichnungen erläutert. Es zeigen:
-
Figur 1 eine schematische Darstellung eines Einspritzventils, -
Figur 2 einen Querschnitt durch eine Hebelvorrichtung in einer ersten Ausführungsform, -
Figur 3 einen Querschnitt durch eine Hebelvorrichtung, nicht Teil der Erfindung, -
Figur 4 einen Querschnitt durch eine Hebelvorrichtung, nicht Teil der Erfindung, und -
Figur 5 einen weiteren Querschnitt durch die Hebelvorrichtung des Beispiels derFigur 4 .
-
FIG. 1 a schematic representation of an injection valve, -
FIG. 2 a cross section through a lever device in a first embodiment, -
FIG. 3 a cross section through a lever device, not part of the invention, -
FIG. 4 a cross section through a lever device, not part of the invention, and -
FIG. 5 a further cross section through the lever device of the example ofFIG. 4 ,
Elemente gleicher Konstruktion oder Funktion sind figurenübergreifend mit den gleichen Bezugszeichen versehen.Elements of the same construction or function are provided across the figures with the same reference numerals.
Das Einspritzventil 10 hat ein Gehäuse 12. Das Gehäuse 12 hat eine Zwischenscheibe 12a, die zwischen zwei rohrförmigen Abschnitten 12b des Gehäuses 12 angeordnet ist. Die Zwischenscheibe 12a und die beiden rohrförmigen Abschnitte 12b sind fest miteinander gekoppelt und bilden zusammen das Gehäuse 12 aus. In dem Gehäuse 12 ist eine Gehäuseausnehmung 14 mit einem Fluideintritt 16 und einem Fluidaustritt 18 ausgebildet. Über einen nicht dargestellten Anschluss, der mit der Gehäuseausnehmung 14 hydraulisch gekoppelt ist, kann dem Einspritzventil 10 im Bereich des Fluideintritts 16 Kraftstoff zugeführt werden.The
In der Gehäuseausnehmung 14 ist axial bewegbar eine Ventilnadel 20 angeordnet, die in einer Schließposition eine Einspritzdüse 22 verschließt und anderenfalls einen Kraftstofffluss durch die Einspritzdüse 22 ermöglicht.In the housing recess 14, a
Das Einspritzventil 10 umfasst einen piezoelektrischen Aktuator 24. Anstelle des piezoelektrischen Aktuators 24 kann auch ein anderer Aktuator vorgesehen sein, z.B. ein magnetostriktiver Aktuator oder ein elektromagnetischer Aktuator.The
Das Einspritzventil 10 umfasst weiter ein mit dem Aktuator 24 gekoppeltes Antriebselement 26. Das Antriebselement 26 weist vorzugsweise einen Stift oder eine Stange auf, der beziehungsweise die den Hub und eine Antriebskraft des Aktuators 24 überträgt. Der Aktuator 24 und das Antriebselement 26 sind in axialer Richtung miteinander gekoppelt. Ein Hub des Antriebselements 26 ist abhängig von einer axialen Ausdehnung des piezoelektrischen Aktuators 24, die abhängig von einem Stellsignal ist, das dem piezoelektrischen Aktuator 24 zugeführt werden kann. Das Antriebselement 26 umfasst ferner ein vorzugsweise glockenförmiges Bauelement 27.The
In der Gehäuseausnehmung 14 des Einspritzventils 10 ist ferner eine Hebelvorrichtung 28 angeordnet. Die Hebelvorrichtung 28 umfasst das Antriebselement 26 und ein Hebelelement 30 oder mehrere Hebelelemente 30. In den gezeigten Ausführungsformen hat die Hebelvorrichtung 28 zwei Hebelelemente 30. Die Hebelelemente 30 sind mit dem Antriebselement 26 gekoppelt. Ferner sind die Hebelelemente 30 mit einem Abtriebselement 32 gekoppelt. Das Abtriebselement 32 ist in der Gehäuseausnehmung 14 angeordnet. Das Abtriebselement 32 ist vorzugsweise mit der Ventilnadel 20 gekoppelt. Die Ventilnadel 20 kann auch das Abtriebselement 32 bilden. Das Antriebselement 26, das Hebelelement 30 und das Abtriebselement 32 wirken derart zusammen, dass der Hub des Antriebselements 26 auf die Ventilnadel 20 übertragen wird und dass die Ventilnadel 20 damit in ihre Schließposition oder in eine Offenposition bewegt wird.In the
Eine Kraftwirkungsachse A einer Antriebskraft des Antriebselements 26 verläuft durch das Antriebselement 26 und als Kraftwirkungsachse einer Abtriebskraft weiter durch das Abtriebselement 32. In weiteren Ausführungsformen ist die Kraftwirkungsachse durch das Antriebselement 26 versetzt zu der Kraftwirkungsachse durch das Abtriebselement 32.A force action axis A of a drive force of the
Die Hebelelemente 30 haben jeweils einen Kopplungsabschnitt 34. In der in
In dem in
In dem in den
Die Kopplungsabschnitte 34 der Hebelelemente 30 haben jeweils eine Ausnehmung 44. Die Stifte 42 greifen in die Ausnehmungen 44 der Kopplungsabschnitte 34 der Hebelelemente 30 ein. Damit kann erreicht werden, dass die Hebelelemente 30 drehfest mit der Zwischenscheibe 12a des Gehäuses 12 bezüglich der Kraftwirkungsachse A gekoppelt sind.The
Durch die drehfeste Kopplung zwischen den Hebelelementen 30 und dem Gehäuse 12 kann erreicht werden, dass die Hebelelemente 30 auch über eine Vielzahl von Einspritzvorgängen eine feste Position gegenüber dem Gehäuse 12 einnehmen können. Dadurch können auch über eine Vielzahl von Einspritzvorgängen des Einspritzventils 10 stabile Einspritzverhältnisse des Einspritzventils 10 erreicht werden. Dadurch kann erreicht werden, dass sich Bauteiltoleranzen nur geringfügig auf die Einspritzmengen des Einspritzventils 10 auswirken.Due to the rotationally fixed coupling between the
Claims (2)
- Lever device (28) for an injection valve, having- a housing (12) which has a housing recess (14),- at least one lever element (30) which is arranged in the housing recess (14),- a drive element (26) which is arranged in the housing recess (14) and is coupled to the at least one lever element (30) for acting on the at least one lever element in the direction of a force action axis (A), and- an output element (32) which is arranged in the housing recess (14) and is coupled to the at least one lever element (30) in such a way that the output element (32) can be moved in the direction of the force action axis (A) by means of the at least one lever element (30),characterized in that the at least one lever element (30) has a coupling section (34) in order to couple the lever element (30) fixedly to the output element (32) so as to rotate with it with regard to the force action axis (A),
the coupling section (34) of the lever element (30) having a planar wall section (38), and the output element (32) having a planar wall section (36), and the planar wall section (38) of the lever element (30) interacting with the planar wall section (36) of the output element (32) in such a way that the at least one lever element (30) is coupled to the output element (32) fixedly so as to rotate with it with regard to the force action axis (A). - Injection valve (10) which has- a lever device (28) according to one of the preceding claims,- a valve needle (20) which is coupled to the output element (32) or which forms the output element (32),in which injection valve (10) the drive element (26) and the valve needle (20) are coupled to one another via the lever device (28) in such a way that, depending on an actuating signal, the valve needle (20) prevents a fluid flow through the injection valve (10) in a closed position and otherwise releases a fluid flow through the injection valve (10).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011090196A DE102011090196A1 (en) | 2011-12-30 | 2011-12-30 | Lever and injector |
PCT/EP2012/076183 WO2013098161A1 (en) | 2011-12-30 | 2012-12-19 | Lever device and a fuel injection valve |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2798195A1 EP2798195A1 (en) | 2014-11-05 |
EP2798195B1 true EP2798195B1 (en) | 2017-01-11 |
Family
ID=47557068
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12813825.2A Active EP2798195B1 (en) | 2011-12-30 | 2012-12-19 | Lever device and a fuel injection valve |
Country Status (4)
Country | Link |
---|---|
US (1) | US9500169B2 (en) |
EP (1) | EP2798195B1 (en) |
DE (1) | DE102011090196A1 (en) |
WO (1) | WO2013098161A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011090200A1 (en) | 2011-12-30 | 2013-07-04 | Continental Automotive Gmbh | Lever and injector |
DE102011090196A1 (en) | 2011-12-30 | 2013-07-04 | Continental Automotive Gmbh | Lever and injector |
FR3037923B1 (en) * | 2015-06-23 | 2018-05-04 | Airbus Helicopters | METHOD FOR CONTROLLING A TRIMOTIVE MOTOR INSTALLATION FOR A ROTARY WING AIRCRAFT |
Family Cites Families (25)
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GB1470525A (en) | 1973-08-29 | 1977-04-14 | Girling Ltd | Abutment assemblies for internal shoe drum brakes |
DE3311690C2 (en) | 1983-03-30 | 1985-05-30 | Heilmeier & Weinlein Fabrik für Oel-Hydraulik GmbH & Co KG, 8000 München | Electromagnetically operated valve |
US5121730A (en) | 1991-10-11 | 1992-06-16 | Caterpillar Inc. | Methods of conditioning fluid in an electronically-controlled unit injector for starting |
US6607178B1 (en) | 1997-09-29 | 2003-08-19 | Siemens Aktiengesellschaft | Thrust device, fuel injection valve having such a device, and method for manufacturing a thrust transfer element |
DE19757659C1 (en) | 1997-12-23 | 1999-06-17 | Siemens Ag | Fuel injection valve with compensation surface e.g. for motor vehicle IC engine |
DE19857615C1 (en) * | 1998-12-14 | 2000-07-13 | Siemens Ag | Lever translator |
DE19921242C1 (en) | 1999-05-07 | 2000-10-26 | Siemens Ag | Method of positioning control drive in common rail fuel injector for motor vehicle internal combustion engine |
DE10002720A1 (en) * | 1999-08-20 | 2001-03-29 | Bosch Gmbh Robert | Valve for controlling liquids |
WO2001014731A1 (en) | 1999-08-20 | 2001-03-01 | Robert Bosch Gmbh | Valve for controlling the flow of liquids |
DE10101799A1 (en) | 2001-01-17 | 2002-07-18 | Bosch Gmbh Robert | Valve for controlling fluids has an actuator, a mechanical changeover device for switching over the stroke in the actuator, a readjusting device and a valve element. |
WO2002086982A1 (en) | 2001-04-20 | 2002-10-31 | Siemens Aktiengesellschaft | Device for transmitting the deflection of an actuator and method for producing the same |
US6595436B2 (en) | 2001-05-08 | 2003-07-22 | Cummins Engine Company, Inc. | Proportional needle control injector |
DE10304240A1 (en) | 2003-02-03 | 2004-10-28 | Volkswagen Mechatronic Gmbh & Co. Kg | Device for transmitting a deflection of an actuator |
DE10308613A1 (en) | 2003-02-27 | 2004-09-16 | Siemens Ag | Valve with a lever, lever and method for producing a lever |
DE10326707B3 (en) * | 2003-06-11 | 2005-01-27 | Westport Germany Gmbh | Valve device and method for injecting gaseous fuel |
DE102005020366A1 (en) * | 2005-05-02 | 2006-11-09 | Robert Bosch Gmbh | Injector for motor vehicle internal combustion engine fuel system has nozzle with axially slidable piston connected to needle via connecting volume |
DE102005024707A1 (en) * | 2005-05-30 | 2006-12-07 | Robert Bosch Gmbh | fuel Injector |
DE102006017034B4 (en) * | 2006-04-11 | 2008-01-24 | Siemens Ag | Piezo actuator, method for producing a piezo actuator and injection system with such |
DE102006031567A1 (en) * | 2006-07-07 | 2008-01-10 | Siemens Ag | Injection system and method for manufacturing an injection system |
DE102009018289B3 (en) | 2009-04-21 | 2010-06-17 | Continental Automotive Gmbh | Method and device for operating an injection valve |
DE102010044285B4 (en) | 2010-09-03 | 2014-02-27 | Continental Automotive Gmbh | Method and device for adjusting an idle stroke of an actuator of an injector and injector assembly |
DE102011075732B4 (en) | 2011-05-12 | 2021-02-11 | Vitesco Technologies GmbH | Control method for an injection valve and injection system |
US8844842B2 (en) | 2011-08-12 | 2014-09-30 | Caterpillar Inc. | Three-way needle control valve and dual fuel injection system using same |
DE102011090200A1 (en) | 2011-12-30 | 2013-07-04 | Continental Automotive Gmbh | Lever and injector |
DE102011090196A1 (en) | 2011-12-30 | 2013-07-04 | Continental Automotive Gmbh | Lever and injector |
-
2011
- 2011-12-30 DE DE102011090196A patent/DE102011090196A1/en not_active Ceased
-
2012
- 2012-12-19 WO PCT/EP2012/076183 patent/WO2013098161A1/en active Application Filing
- 2012-12-19 US US14/369,812 patent/US9500169B2/en active Active
- 2012-12-19 EP EP12813825.2A patent/EP2798195B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP2798195A1 (en) | 2014-11-05 |
WO2013098161A1 (en) | 2013-07-04 |
DE102011090196A1 (en) | 2013-07-04 |
US20150028135A1 (en) | 2015-01-29 |
US9500169B2 (en) | 2016-11-22 |
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