DE102008048514A1 - Electromagnetic valve i.e. 2/2-way-seat valve, has inlet channel attached to pressure medium chamber, and seal designed as thin section, which is attached on inner surface of valve guide and/or on outer surface of valve closing member - Google Patents
Electromagnetic valve i.e. 2/2-way-seat valve, has inlet channel attached to pressure medium chamber, and seal designed as thin section, which is attached on inner surface of valve guide and/or on outer surface of valve closing member Download PDFInfo
- Publication number
- DE102008048514A1 DE102008048514A1 DE102008048514A DE102008048514A DE102008048514A1 DE 102008048514 A1 DE102008048514 A1 DE 102008048514A1 DE 102008048514 A DE102008048514 A DE 102008048514A DE 102008048514 A DE102008048514 A DE 102008048514A DE 102008048514 A1 DE102008048514 A1 DE 102008048514A1
- Authority
- DE
- Germany
- Prior art keywords
- valve
- pressure medium
- closure member
- space
- guide
- 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.)
- Ceased
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0644—One-way valve
- F16K31/0655—Lift valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0686—Braking, pressure equilibration, shock absorbing
- F16K31/0693—Pressure equilibration of the armature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
- F16K41/06—Spindle sealings with stuffing-box ; Sealing rings with at least one ring attached to both spindle and housing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
- F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
- F01L2001/34423—Details relating to the hydraulic feeding circuit
- F01L2001/34426—Oil control valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
Description
Gebiet der ErfindungField of the invention
Die Erfindung betrifft ein Elektromagnetventil. Dieses umfasst einen Magnetankerraum, einen Druckmittelraum, einen jeweils an den Druckmittelraum angeschlossenen Druckmitteleinlasskanal und Druckmittelauslasskanal, einen Ventilsitz und ein Ventilschließglied, das bei Anlage am Ventilsitz die Verbindung zwischen dem Druckmitteleinlasskanal und dem Druckmittelauslasskanal sperrt, sowie eine zwischen dem Magnetankerraum und dem Druckmittelraum verlaufende Ventilführung zur längsbeweglichen Lagerung des Ventilschließglieds, wobei zwischen dem Ventilschließglied und der Ventilführung eine das Ventilschließglied umschließende und den Magnetankerraum vom Druckmittelraum separierende Dichtung aus einem Polymer mit niedrigem Reibkoeffizienten wie Polytetrafluorethylen verläuft.The The invention relates to a solenoid valve. This includes one Magnetankerraum, a pressure medium space, one to the pressure medium space connected pressure medium inlet channel and pressure medium outlet channel, a valve seat and a valve closing member, which when plant at the valve seat, the connection between the pressure medium inlet channel and the Druckmittelauslasskanal locks, as well as between the magnet armature space and the pressure medium space extending valve guide for longitudinally movable Storage of the valve closure member, wherein between the valve closure member and the valve guide a the valve closing member enclosing and the magnet armature space from the pressure medium space Separating seal made of a polymer with a low coefficient of friction as polytetrafluoroethylene runs.
Hintergrund der ErfindungBackground of the invention
Bei
einem derartigen Elektromagnetventil dient die Dichtung der Vermeidung
von unerwünschten Spaltleckageströmen durch die
Spielpassung zwischen dem Ventilschließglied und der Ventilführung
in Richtung des Magnetankerraums und mithin der hydraulischen Druckausgeglichenheit
des Ventilschließglieds. In der
Aufgabe der ErfindungObject of the invention
Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, ein Elektromagnetventil der eingangs genannten Art so fortzubilden, dass die den Magnetankerraum vom Druckmittelraum separierende Dichtung bei ausreichender Dichtwirkung eine möglichst geringe und zudem vom Druck im Druckmittelraum weitgehend unabhängige Reibung am Ventilschließglied erzeugt.Of the The present invention is therefore based on the object, a solenoid valve of the aforementioned type so that the magnet armature space from the pressure medium space separating seal with sufficient sealing effect the lowest possible and also from the pressure in the pressure medium space largely independent friction on the valve closure member generated.
Zusammenfassung der ErfindungSummary of the invention
Die Lösung dieser Aufgabe ergibt sich aus den kennzeichnenden Merkmalen des Anspruchs 1 während vorteilhafte Weiterbildungen und Ausgestaltungen der Erfindung den Unteransprüchen entnehmbar sind. Demnach soll die Dichtung als Dünnschicht ausgebildet sein, die auf der Innenmantelfläche der Ventilführung und/oder auf der Außenmantelfläche des Ventilschließglieds aufgebracht ist. Un ter dem Begriff Dünnschicht ist ein Oberflächenüberzug zu verstehen, der mittels eines bekannten Beschichtungsverfahrens auf den Trägerkörper aufgebracht wird und fest auf diesem haftet. Dies schließt auch ein rohrförmiges Polymer-Ausgangsmaterial ein, das in die Innenmantelfläche der Ventilführung eingelegt bzw. über die Außenmantelfläche des Ventilschließglieds gestülpt und mittels thermischer Behandlung an der entsprechenden Oberfläche fest haftend zur Anlage kommt. Zur weiteren Verbesserung seiner Gleiteigenschaften kann der PTFE-Werkstoff zudem auch Anteile von Kohlenstoff, Glasfaser oder Bronze aufweisen. Die bezüglich Reibung am Ventilschließglied weitgehende Druckunabhängigkeit der so ausgebildeten Dichtung resultiert aus der geringen Wandstärke der Polymerdichtung, die sich in Verbindung mit ihrer geringen Elastizität (insbesondere im Falle von PTFE) auch bei sehr hohen Drücken im Druckmittelraum nur unwesentlich verformen kann.The Solution to this problem arises from the characterizing Features of claim 1 during advantageous developments and embodiments of the invention, the dependent claims are. Accordingly, the seal should be formed as a thin film be on the inside surface of the valve guide and / or on the outer circumferential surface of the valve closure member is applied. Below the term thin film is a Surface coating to understand by means of a known coating method on the carrier body is applied and firmly adhering to this. This concludes also a tubular polymer starting material which in the inner circumferential surface of the valve guide inserted or over the outer circumferential surface of the valve closure member slipped over and by thermal treatment at the appropriate Surface firmly adhering to the plant comes. To further In addition, the PTFE material can also improve its sliding properties Shares of carbon, glass fiber or bronze. The re Friction on the valve closure member extensive pressure independence the seal thus formed results from the small wall thickness the polymer seal, in conjunction with their low elasticity (especially in the case of PTFE) even at very high pressures can deform only insignificantly in the pressure medium space.
Ein im Hinblick auf die Herstellkosten des Elektromagnetventils weiterer Vorteil der Erfindung ist darin zu sehen, dass der eingangs erwähnte Niederhalter, der für die Lagefixierung eines separaten Dichtrings erforderlich ist, und die zugehörige Druckfeder entfallen können.One with regard to the manufacturing costs of the solenoid valve further Advantage of the invention is the fact that the above-mentioned Hold-down device for fixing the position of a separate sealing ring is required, and the associated compression spring omitted can.
In konkretisierter Weiterbildung der Erfindung soll die Dünnschicht eine Stärke von 0,1 mm bis 0,3 mm aufweisen.In concretized development of the invention, the thin film have a thickness of 0.1 mm to 0.3 mm.
Im Falle der auf die Innenmantelfläche der Ventilführung aufgebrachten Dünnschicht ist es unter Fertigungs-, d. h. Beschichtungsaspekten zweckmäßig, die Ventilführung als Metallring auszubilden, der mittels Pressverband in einer stirnseitigen Senkung eines den Magnetankerraum einerseits und den Druckmittelraum andererseits begrenzenden Magnetkerns befestigt ist. Dabei kann es vorgesehen sein, dass die Dünnschicht in radial einwärtiger Richtung konvex ausgebildet ist. Im Hinblick auf unvermeidliche Rundlauftoleranzen ermöglicht die konvexe Ausgestaltung der Dichtung einen geringfügigen rotatorischen Freiheitsgrad des Ventilschließglieds und mithin dessen optimale Ausrichtung am Ventilsitz.in the Trap on the inner surface of the valve guide applied thin film, it is under manufacturing, d. H. Coating aspects expedient, the valve guide form as a metal ring, by means of press fit in a frontal Lowering the magnet armature space on the one hand and the pressure medium space on the other hand, limiting magnetic core is attached. It can it can be provided that the thin layer in radially inward Direction is convex. With regard to inevitable Concentricity tolerances allows the convex design the seal a slight rotational degree of freedom the valve closure member and thus its optimal orientation at the valve seat.
In weiterer, geometrisch bevorzugter Konkretisierung sollen der Metallring einen im wesentlichen rechteckförmigen Querschnitt und die Dünnschicht einen im wesentlichen kreissegmentförmigen Querschnitt aufweisen.In Another, geometrically preferred concretization of the metal ring a substantially rectangular cross-section and the thin film has a substantially circular segment-shaped cross-section exhibit.
Im Falle der auf die Außenmantelfläche des Ventilschließglieds aufgebrachten Dünnschicht kann es außerdem zweckmäßig sein, die Außenmantelfläche lediglich lokal im Bereich der Ventilführung mit der Dünnschicht zu versehen.in the Fall on the outer circumferential surface of the valve closure member applied thin film, it may also be appropriate be, the outer circumferential surface only locally in Area of the valve guide with the thin film to provide.
Schließlich sollen, sofern es möglich und zweckmäßig ist, die vorgenannten Merkmale und Ausgestaltungen der Erfindung auch beliebig miteinander kombinierbar sein.After all should, if possible and appropriate is, the aforementioned features and embodiments of the invention also be combined with each other as desired.
Kurze Beschreibung der ZeichnungenBrief description of the drawings
Weitere Merkmale der Erfindung ergeben sich aus der nachfolgenden Beschreibung und aus den Zeichnungen, in denen Ausführungsbeispiele der Erfindung dargestellt sind. Dabei sind gleiche oder funktionsgleiche Bauteile oder Merkmale mit gleichen Bezugszahlen versehen. Es zeigen:Further Features of the invention will become apparent from the following description and from the drawings, in which embodiments of the Invention are shown. Here are the same or functionally identical Components or features provided with the same reference numbers. Show it:
Detaillierte Beschreibung der ZeichnungenDetailed description the drawings
Die
aus Magnetanker
Das
Ventilschließglied
Oberhalb
des Federanschlags
Zur
Reduzierung des hydraulischen Widerstands ist der Magnetanker
Bei
dem Ausführungsbeispiel gemäß
Ein
weiteres Ausführungsbeispiel für ein erfindungsgemäßes
Hydraulikventil
- 11
- ElektromagnetventilSolenoid valve
- 22
- Ventilgehäusevalve housing
- 33
- Magnetkernmagnetic core
- 44
- MagnetankerraumArmature space
- 55
- DruckmittelraumPressure fluid chamber
- 66
- Hülseshell
- 77
- Endscheibeend disk
- 88th
- Magnetankerarmature
- 99
- Ventilstößeltappet
- 1010
- Stufenbohrung des Magnetankersstepped bore of the magnet armature
- 1111
- RückstellfederReturn spring
- 1212
- VentilschließgliedValve closure member
- 1313
- Durchgangsbohrung des MagnetkernsThrough Hole of the magnetic core
- 1414
- BuchseRifle
- 1515
- Ventilfedervalve spring
- 1616
- Federanschlagspring stop
- 1717
- Ringkörperring body
- 1818
- Ventilsitzvalve seat
- 1919
- DruckmitteleinlasskanalPressure fluid inlet channel
- 2020
- DruckmittelauslasskanalDruckmittelauslasskanal
- 2121
- DruckausgleichsbohrungPressure compensating bore
- 2222
- Ventilführungvalve guide
- 2323
- Dichtungpoetry
- 2424
- Metallringmetal ring
- 2525
- Senkungreduction
- 2626
- Inneneinstichinternal groove
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - DE 102005049122 A1 [0002] DE 102005049122 A1 [0002]
- - DE 4103365 A1 [0002] - DE 4103365 A1 [0002]
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008048514A DE102008048514A1 (en) | 2008-09-23 | 2008-09-23 | Electromagnetic valve i.e. 2/2-way-seat valve, has inlet channel attached to pressure medium chamber, and seal designed as thin section, which is attached on inner surface of valve guide and/or on outer surface of valve closing member |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008048514A DE102008048514A1 (en) | 2008-09-23 | 2008-09-23 | Electromagnetic valve i.e. 2/2-way-seat valve, has inlet channel attached to pressure medium chamber, and seal designed as thin section, which is attached on inner surface of valve guide and/or on outer surface of valve closing member |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102008048514A1 true DE102008048514A1 (en) | 2010-03-25 |
Family
ID=41693849
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102008048514A Ceased DE102008048514A1 (en) | 2008-09-23 | 2008-09-23 | Electromagnetic valve i.e. 2/2-way-seat valve, has inlet channel attached to pressure medium chamber, and seal designed as thin section, which is attached on inner surface of valve guide and/or on outer surface of valve closing member |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102008048514A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2626543A1 (en) * | 2012-02-13 | 2013-08-14 | Fiat Powertrain Technologies S.p.A. | Gaseous fuel injector device for internal combustion engines |
DE102011075043B4 (en) | 2011-05-02 | 2023-04-13 | Schaeffler Technologies AG & Co. KG | Seal for switching valves |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4103365A1 (en) | 1991-02-05 | 1992-08-13 | Teves Metallwaren Alfred | PRESSURE CONTROL VALVE |
DE102005049122A1 (en) | 2005-04-15 | 2006-10-19 | Continental Teves Ag & Co. Ohg | Improved cartridge solenoid valve, has holding plate connected detachably to valve mounting, with interlocking- or interference connection to valve casing |
DE102005054132A1 (en) * | 2005-11-14 | 2007-05-16 | Bosch Gmbh Robert | Tribological system for use with e.g. magnetic valve, of e.g. internal combustion engine, has two friction partners that exhibit two-part layer with hard primary layer and outer sliding layer, where sliding layer is fixed lubricant layer |
DE102007001650A1 (en) * | 2007-01-11 | 2008-07-17 | Robert Bosch Gmbh | Valve e.g. solenoid valve, for use in e.g. internal-combustion engine, has valve unit with flat seat, for releasing and closing opening, where flow direction of gaseous medium through opening is same as actuation direction for opening valve |
-
2008
- 2008-09-23 DE DE102008048514A patent/DE102008048514A1/en not_active Ceased
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4103365A1 (en) | 1991-02-05 | 1992-08-13 | Teves Metallwaren Alfred | PRESSURE CONTROL VALVE |
DE102005049122A1 (en) | 2005-04-15 | 2006-10-19 | Continental Teves Ag & Co. Ohg | Improved cartridge solenoid valve, has holding plate connected detachably to valve mounting, with interlocking- or interference connection to valve casing |
DE102005054132A1 (en) * | 2005-11-14 | 2007-05-16 | Bosch Gmbh Robert | Tribological system for use with e.g. magnetic valve, of e.g. internal combustion engine, has two friction partners that exhibit two-part layer with hard primary layer and outer sliding layer, where sliding layer is fixed lubricant layer |
DE102007001650A1 (en) * | 2007-01-11 | 2008-07-17 | Robert Bosch Gmbh | Valve e.g. solenoid valve, for use in e.g. internal-combustion engine, has valve unit with flat seat, for releasing and closing opening, where flow direction of gaseous medium through opening is same as actuation direction for opening valve |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011075043B4 (en) | 2011-05-02 | 2023-04-13 | Schaeffler Technologies AG & Co. KG | Seal for switching valves |
EP2626543A1 (en) * | 2012-02-13 | 2013-08-14 | Fiat Powertrain Technologies S.p.A. | Gaseous fuel injector device for internal combustion engines |
US9316192B2 (en) | 2012-02-13 | 2016-04-19 | Fiat Powertrain Technologies S.P.A. | Gaseous-fuel-injector device for internal-combustion engines |
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Owner name: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, 91074 H, DE |
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