DE102004010289A1 - Fuel injection valve for internal combustion engine, has two bearings that are made from leaf spring unit whose sides are respectively fixed on edge areas of valve body and valve needle, so that bearings are not shifted in axial direction - Google Patents
Fuel injection valve for internal combustion engine, has two bearings that are made from leaf spring unit whose sides are respectively fixed on edge areas of valve body and valve needle, so that bearings are not shifted in axial direction Download PDFInfo
- Publication number
- DE102004010289A1 DE102004010289A1 DE102004010289A DE102004010289A DE102004010289A1 DE 102004010289 A1 DE102004010289 A1 DE 102004010289A1 DE 102004010289 A DE102004010289 A DE 102004010289A DE 102004010289 A DE102004010289 A DE 102004010289A DE 102004010289 A1 DE102004010289 A1 DE 102004010289A1
- Authority
- DE
- Germany
- Prior art keywords
- valve
- leaf spring
- injection valve
- needle
- valve body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
- F02M61/12—Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/168—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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/20—Closing valves mechanically, e.g. arrangements of springs or weights or permanent magnets; Damping of valve lift
-
- 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
- F02M2200/306—Fuel-injection apparatus having mechanical parts, the movement of which is damped using mechanical means
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)
Abstract
Description
Die Erfindung geht aus von einem Kraftstoff-Einspritzventil für Brennkraftmaschinen nach dem Oberbegriff des Anspruchs 1.The The invention is based on a fuel injection valve for internal combustion engines according to the preamble of claim 1.
Bei heute üblicherweise eingesetzten Kraftstoff-Einspritzventilen ist die Ventilnadel in dem aus bautechnischen Gründen relativ langen, hohlzylindrischen Ventilkörper an zwei Lagerstellen geführt. Jede Lagerstelle besteht aus einem Führungsring, der im Ventilkörper festgesetzt ist und die Ventilnadel mit einem Gleitzylinder umschließt. Diese Gleitführungen haben ein unvermeidliches radiales Spiel, sind reibungsbehaftet, was durch Schmutzablagerungen noch verstärkt wird, und unterliegen einem nicht unbeachtlichen Verschleiß. Darüber hinaus müssen bei der Fertigung sehr enge Toleranzen bezüglich des Außendurchmessers der Ventilnadel und des Innendurchmessers des Führungszylinder eingehalten werden.at today usually used fuel injectors is the valve needle in for structural reasons relatively long, hollow cylindrical valve body led to two bearings. each Bearing consists of a guide ring, the in the valve body is fixed and encloses the valve needle with a sliding cylinder. These sliding guides have an inevitable radial play, are frustrated, which is reinforced by dirt deposits, and are not subject to one irrelevant wear. About that have to go out very tight tolerances with regard to the outside diameter during production maintained the valve needle and the inner diameter of the guide cylinder become.
Bei
einem bekannten Kraftstoff-Einspritzventil (
Vorteile der ErfindungAdvantages of invention
Das erfindungsgemäße Kraftstoff-Einspritzventil mit den Merkmalen des Anspruchs 1 hat den Vorteil, dass durch den Einsatz der Blattfeder-Elemente die Lagerung der Ventilnadel im Ventilkörper verschleißarm, robust gegen Verschmutzung und toleranzunempfindlich ist. Die Reibungsverluste sind stark reduziert, so dass auch der die Ventilnadel betätigende Elektromagnet leistungsärmer und damit baukleiner ausgeführt werden kann. Da die Blattfeder-Elemente als kostengünstige Blechstanzteile oder Blechtiefziehteile mit nur groben Toleranzvorgaben hergestellt werden können, sind die Fertigungskosten gering.The Fuel injection valve according to the invention with the features of claim 1 has the advantage that by the Use of the leaf spring elements the storage of the valve needle in Valve body wear-resistant, robust against pollution and tolerance insensitive. The friction losses are greatly reduced, so that even the valve needle actuated Electromagnet low-power and thus built smaller can be. Since the leaf spring elements as inexpensive sheet metal stampings or Sheet metal parts with only rough tolerance specifications are produced can, the production costs are low.
Durch die in den weiteren Ansprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen des im Anspruch 1 angegebenen Kraftstoff-Einspritzventils möglich.By in the further claims listed activities are advantageous developments and improvements of the claim 1 specified fuel injector possible.
Gemäß einer vorteilhaften Ausführungsform der Erfindung sind die Blattfeder-Elemente in Axialrichtung vorgespannt. Dadurch wird eine Spielfreiheit der Ventilnadel in Hubrichtung erreicht. Die Vorspannung der beiden Blattfeder-Elemente ist dabei gleichgerichtet. Durch eine geeignete Wahl der Vorspannung der Blattfeder-Elemente kann auch das Öffnungs- oder Schließverhalten des Einspritzventils begünstigt werden.According to one advantageous embodiment of the Invention, the leaf spring elements are biased in the axial direction. As a result, a backlash of the valve needle is achieved in the stroke direction. The bias of the two leaf spring elements is rectified. By a suitable choice of the bias of the leaf spring elements can also be the opening or closing behavior the injection valve favors become.
Gemäß einer vorteilhaften Ausführungsform der Erfindung sind die Blattfeder-Elemente aus dünnem Federblech hergestellt. Beispielhaft beträgt die Materialstärke des Federblechs 0,1 mm bis 0,3 mm. Solche Blattfeder-Elemente sind besonders vorteilhaft für kleine Hübe der Ventilnadel geeignet, die beispielhaft zwischen 30 μm bis 100μm liegen.According to one advantageous embodiment of the Invention, the leaf spring elements are made of thin spring steel. Exemplary the material thickness of the spring plate 0.1 mm to 0.3 mm. Such leaf spring elements are especially advantageous for small strokes the valve needle suitable, which are for example between 30 .mu.m to 100 .mu.m.
Zeichnungdrawing
Die Erfindung ist anhand eines in der Zeichnung dargestellten Ausführungsbeispiels in der nachfolgenden Beschreibung näher erläutert. Es zeigen:The Invention is based on an embodiment shown in the drawing explained in more detail in the following description. Show it:
Beschreibung des Ausführungsbeispielsdescription of the embodiment
Das
in
Die
Ventilnadel
Zum
Erreichen einer radial spielfreien, reibungsarmen, weitgehend verschleißfreien
und verschmutzungsunempfindlichen Hublagerung der Ventilnadel
Das
in der unteren Lagerstelle
Selbstverständlich ist
es möglich,
die Blattfeder-Elemente
Ein
weiteres Ausführungsbeispiel
für das Blattfeder-Element
Alle
in
In
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004010289A DE102004010289A1 (en) | 2004-03-03 | 2004-03-03 | Fuel injection valve for internal combustion engine, has two bearings that are made from leaf spring unit whose sides are respectively fixed on edge areas of valve body and valve needle, so that bearings are not shifted in axial direction |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004010289A DE102004010289A1 (en) | 2004-03-03 | 2004-03-03 | Fuel injection valve for internal combustion engine, has two bearings that are made from leaf spring unit whose sides are respectively fixed on edge areas of valve body and valve needle, so that bearings are not shifted in axial direction |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102004010289A1 true DE102004010289A1 (en) | 2005-09-22 |
Family
ID=34877277
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102004010289A Withdrawn DE102004010289A1 (en) | 2004-03-03 | 2004-03-03 | Fuel injection valve for internal combustion engine, has two bearings that are made from leaf spring unit whose sides are respectively fixed on edge areas of valve body and valve needle, so that bearings are not shifted in axial direction |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102004010289A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2923066B1 (en) * | 2012-11-26 | 2020-03-11 | Robert Bosch GmbH | Valve device |
-
2004
- 2004-03-03 DE DE102004010289A patent/DE102004010289A1/en not_active Withdrawn
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2923066B1 (en) * | 2012-11-26 | 2020-03-11 | Robert Bosch GmbH | Valve device |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1073837B1 (en) | Fuel injection valve | |
EP2175124B1 (en) | Fuel injector for internal combustion engines | |
WO1998042976A1 (en) | Electromagnetically operated valve | |
EP0796393B1 (en) | Electromagnetically operable valve, especially fuel injection valve | |
DE19631066A1 (en) | Fuel injector | |
DE102008005532A1 (en) | Fuel injector whose control valve element has a support region | |
DE19522284B4 (en) | Fuel injector | |
EP0935707A1 (en) | Fuel injection valve | |
DE102007047426A1 (en) | Injector with piezo actuator | |
EP2201240B1 (en) | Injector | |
EP0937203B1 (en) | Fuel injection valve | |
DE19949814A1 (en) | Pressure regulating valve for a storage fuel injection system for internal combustion engines | |
DE102007047152A1 (en) | Injector with an annulus separate anchor space | |
DE10055483B4 (en) | Fuel injector | |
DE102008040680A1 (en) | Fuel injector | |
DE19900037A1 (en) | Fuel injector | |
DE102007011047A1 (en) | Magnetventilinjektor | |
WO2007065752A1 (en) | Deformation-optimized armature guide for solenoid valves | |
DE102004010289A1 (en) | Fuel injection valve for internal combustion engine, has two bearings that are made from leaf spring unit whose sides are respectively fixed on edge areas of valve body and valve needle, so that bearings are not shifted in axial direction | |
DE102006050042A1 (en) | Injector, particularly common rail injector, for fuel injection in combustion chambers of internal-combustion engines, has actuator arranged in injector body, which is arranged to operate valve case of control valve | |
DE102007049945A1 (en) | Fuel injector | |
EP1055065B1 (en) | Fuel injection valve | |
DE10142974B4 (en) | Fuel injector | |
EP1105641B1 (en) | Fuel injection valve | |
DE102010062077A1 (en) | Valve device with an at least partially cylindrical movement element |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8110 | Request for examination paragraph 44 | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |