DE102011077530A1 - Switchable support element for valve train of internal combustion engine, has slider arranged in radial bore, where continuous flow of hydraulic fluid is conducted through path such that slider is moved out of contact from inner element - Google Patents
Switchable support element for valve train of internal combustion engine, has slider arranged in radial bore, where continuous flow of hydraulic fluid is conducted through path such that slider is moved out of contact from inner element Download PDFInfo
- Publication number
- DE102011077530A1 DE102011077530A1 DE201110077530 DE102011077530A DE102011077530A1 DE 102011077530 A1 DE102011077530 A1 DE 102011077530A1 DE 201110077530 DE201110077530 DE 201110077530 DE 102011077530 A DE102011077530 A DE 102011077530A DE 102011077530 A1 DE102011077530 A1 DE 102011077530A1
- Authority
- DE
- Germany
- Prior art keywords
- housing
- coupling
- oil path
- bore
- hydraulic fluid
- 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- Withdrawn
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Classifications
-
- 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
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/18—Rocking arms or levers
- F01L1/185—Overhead end-pivot rocking arms
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- 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
- F01L1/20—Adjusting or compensating clearance
- F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
- F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
- F01L1/2405—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically by means of a hydraulic adjusting device located between the cylinder head and rocker arm
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- 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
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0005—Deactivating valves
Abstract
Description
Die Erfindung betrifft ein schaltbares Abstützelement für einen Ventiltrieb einer Brennkraftmaschine, mit einem Gehäuse, in dessen Bohrung ein axial bewegliches, über eine Lost-Motion-Feder aus dem Gehäuse heraus beaufschlagtes Innenelement verläuft, wobei wenigstens ein Koppelschieber in einer Radialbohrung des Gehäuse sitzt, der für einen Koppelfall über eine mechanische Feder abschnittsweise mit einer Mitnehmerfläche des Innenelements in Eingriff bringbar ist und für einen Entkoppelfall über vor dessen Innenstirn aus einem Hauptölpfad im Abstützelement heranleitbares, druckbeaufschlagtes Hydraulikmittel aus der Mitnehmerfläche zurückfahrbar ist. The invention relates to a switchable support member for a valve train of an internal combustion engine, with a housing, in the bore of an axially movable, via a lost-motion spring from the housing acted upon inner element, wherein at least one coupling slide is seated in a radial bore of the housing for a coupling case via a mechanical spring in sections with a driver surface of the inner member is engageable and for a decoupling via voran the inner end of a main oil path in the support heranleitbares, pressurized hydraulic fluid from the driver surface is moved back.
Ein derartiges Abstützelement geht aus der zum Zeitpunkt der Einreichung dieser Anmeldung noch nicht veröffentlichten
Der Erfindung liegt daher die Aufgabe zugrunde, ein Abstützelement der vorgenannten Art zu schaffen, bei dem die aufgezeigten Nachteile beseitigt sind.The invention is therefore an object of the invention to provide a support member of the aforementioned type, in which the disadvantages are eliminated.
Erfindungsgemäß wird diese Aufgabe dadurch gelöst, dass im Abstützelement ein Nebenölpfad verläuft, über welchen im Entkoppelfall ein ununterbrochener Strom an druckbeaufschlagtem Hydraulikmittel vor die Innenstirn des Koppelschiebers leitbar ist, derart, dass der Koppelschieber außer Kontakt vom Innenelement vorgespannt ist.According to the invention, this object is achieved in that in the support a minor oil path passes, over which in the decoupling a continuous stream of pressurized hydraulic fluid in front of the inner end of the coupling slide is conductive, such that the coupling slide is biased out of contact from the inner element.
Somit sind die vorgenannten Nachteile beseitigt. Der oder die Koppelschieber bleiben auch im Entkoppelzustand des Systems durch den aus dem Nebenölpfad anliegenden, i. d. R. gedrosselten Hydraulikmitteldruck radial nach außen vorgespannt, so dass es beim Zurückfahren des Innenelements in dessen Grundposition nicht mehr zu dem vorbeschriebenen Kantenverschleiß im Koppelbereich kommt. Des weiteren werden evtl. im System angehäufte Luftblasen einfach gesagt weggespült.Thus, the aforementioned disadvantages are eliminated. The one or more coupling slide remain in the decoupling state of the system by the voltage applied from the auxiliary oil path, i. d. R. throttled hydraulic fluid pressure biased radially outwards, so that it no longer comes to the above-described edge wear in the coupling region during retraction of the inner member in its basic position. Furthermore, possibly accumulated in the system air bubbles are simply washed away.
Bevorzugt sind, wie oben genannt, zwei sich diametral gegenüberliegende Koppelschieber vorgesehen, so dass sich die Bauteilbelastungen wie Flächenpressungen im Koppelfall in Grenzen halten. Ggf. können auch umfangsverteilt mehr als zwei Koppelschieber appliziert sein.Preferably, as mentioned above, two diametrically opposed coupling slide provided, so that the component loads such as surface pressures keep in the coupling case within limits. Possibly. can be applied circumferentially distributed more than two coupling slide.
Es ist besonders vorteilhaft, die Koppelschieber in ihrem Koppelbereich abzuflachen, so dass es aufgrund einer vergleichsweisen breiten Kontaktfläche im Koppelzustand ebenfalls zu einer Reduzierung der Kontaktpressung kommt. Alternativ können die Koppelschieber auch durchgehend zylindrisch vorliegen. Vorteilhaft ist es in diesem Kontext, dass, im Gegensatz zum eingangs genannten Stand der Technik, durch den Nebenölpfad (+Hauptölpfad) im Entkoppelvorgang nunmehr die gesamte projizierte Stirnfläche des jeweiligen Koppelkolbens mit Hydraulikmittel beaufschlagt wird, also auch die Fläche bei der Abflachung, so dass sich die Schaltzeiten verkürzen.It is particularly advantageous to flatten the coupling slides in their coupling region, so that, due to a comparatively wide contact surface in the coupling state, the contact pressure is also reduced. Alternatively, the coupling slide can also be present continuously cylindrical. It is advantageous in this context that, in contrast to the aforementioned prior art, by the Nebenölpfad (+ Hauptölpfad) in Entkoppelvorgang now the entire projected end face of the respective coupling piston is acted upon by hydraulic fluid, including the surface in the flattening, so that shorten the switching times.
Der vorschlagsgemäße Nebenölpfad zweigt zweckmäßigerweise von dem als sekantenartigen Querkanal im Gehäuse ausgebildeten Hauptölpfad ab. Er ist als Vertiefung in der Bohrung des Gehäuses dargestellt, die bspw. spanend oder auch spanlos eingebracht werden kann. Alternativ ist für den Nebenölpfad auch an ein geschlossenes Röhrchensystem im Gehäuse oder Innenelement gedacht. Auch kann der Nebenölpfad als separat vom Außenmantel des Gehäuses ausgehender Pfad vorliegen.The proposed minor oil path expediently branches off from the main oil path formed as a secant-like transverse channel in the housing. It is shown as a depression in the bore of the housing, which can be introduced, for example, by cutting or without cutting. Alternatively, the secondary oil path is also intended for a closed tube system in the housing or inner element. Also, the minor oil path may be present as a separate outgoing from the outer shell of the housing path.
Aufgrund der Stufung des oder der Koppelschieber ergibt sich im Entkoppelfall im Stufenbereich eine Druckkammer für das Hydraulikmittel aus dem Nebenölpfad, der vorzugsweise in einem oberen Bereich der Radialbohrung für den jeweiligen Koppelschieber einmündet. Due to the grading of the coupler or slide results in the decoupling case in the stage area a pressure chamber for the hydraulic fluid from the Nebenölpfad, which preferably opens into an upper region of the radial bore for the respective coupling slide.
Als Federmittel zur Verlagerung des oder der Koppelschieber radial nach innen ist eine am Außenmantel des Gehäuses in einer Ringnut verlaufende Bügelfeder vorgesehen. Es kann auch eine Wurmfeder appliziert sein oder jeder Koppelschieber hat eine diesem zugeordnete Schraubendruckfeder bzw. wird er auch in Koppelrichtung über Hydraulikmitteldruck beaufschlagt. Die Ringnut sorgt für eine gute Lagefixierung der Bügelfeder und auch dafür, dass der radiale Bauraum des Gehäuses, welches massiv oder aus Stahlblech dargestellt sein kann, nicht unnötig erhöht ist. As a spring means for displacing the coupling slide or radially inwardly, a bow spring extending on the outer jacket of the housing in an annular groove is provided. It may also be applied a worm spring or each coupling slide has a helical compression spring associated therewith or he is also acted upon in the coupling direction via hydraulic fluid pressure. The annular groove ensures a good positional fixation of the bow spring and also that the radial space of the housing, which may be solid or made of sheet steel, is not unnecessarily increased.
Die Erfindung wird anhand der Zeichnung erläutert. Es zeigen:The invention will be explained with reference to the drawing. Show it:
Dargestellt ist ein schaltbares Abstützelement
Im Gehäuse
In einer ringsegmentartigen Nut
Für einen Koppelfall des Innenelements
Für einen Entkoppelfall des Innenelements
Außerdem verläuft im Abstützelement
Der Nebenölpfad
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- Abstützelementsupporting
- 22
- Gehäusecasing
- 33
- Bohrungdrilling
- 44
- Lost-Motion-FederLost-motion spring
- 55
- Innenelementinner element
- 66
- Koppelschiebercoupling slide
- 77
- Radialbohrungradial bore
- 88th
- Federfeather
- 99
- Mitnehmerflächeentraining
- 1010
- Innenstirninterior forehead
- 1111
- HauptölpfadMain oil path
- 1212
- NebenölpfadBesides oil path
- 1313
- Oberseitetop
- 1414
- Abflachungflattening
- 1515
- Außenmantelouter sheath
- 1616
- QuerkanalQuerkanal
- 1717
- Außenmantelouter sheath
- 1818
- Querschlitztransverse slot
- 1919
- Oberseitetop
- 2020
- nicht vergebennot forgiven
- 2121
- Unterseitebottom
- 2222
- Mündungmuzzle
- 2323
- Abschnittsection
- 2424
- Oberseitetop
- 2525
- Mündungmuzzle
- 2626
- Randedge
- 2727
- Nutgroove
- 2828
- EndeThe End
- 2929
- Außenstirnouter end
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES 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 of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 102010052175 [0002] DE 102010052175 [0002]
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201110077530 DE102011077530A1 (en) | 2011-06-15 | 2011-06-15 | Switchable support element for valve train of internal combustion engine, has slider arranged in radial bore, where continuous flow of hydraulic fluid is conducted through path such that slider is moved out of contact from inner element |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201110077530 DE102011077530A1 (en) | 2011-06-15 | 2011-06-15 | Switchable support element for valve train of internal combustion engine, has slider arranged in radial bore, where continuous flow of hydraulic fluid is conducted through path such that slider is moved out of contact from inner element |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102011077530A1 true DE102011077530A1 (en) | 2012-12-20 |
Family
ID=47228232
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE201110077530 Withdrawn DE102011077530A1 (en) | 2011-06-15 | 2011-06-15 | Switchable support element for valve train of internal combustion engine, has slider arranged in radial bore, where continuous flow of hydraulic fluid is conducted through path such that slider is moved out of contact from inner element |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102011077530A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012201056A1 (en) | 2012-01-25 | 2013-07-25 | Schaeffler Technologies AG & Co. KG | Shiftable valve drive element e.g. plunger, for internal combustion engine, has bending spring section preceding end projection at outer front of coupling piston, and adaptingly running at outer front as region of end piece of spring |
WO2015197055A1 (en) * | 2014-06-24 | 2015-12-30 | Schaeffler Technologies AG & Co. KG | Automatic valve play compensation device for a valve drive of a reciprocating-piston internal combustion engine |
DE102014213334A1 (en) | 2014-07-09 | 2016-01-14 | Schaeffler Technologies AG & Co. KG | Switchable valve drive member |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010052175A1 (en) | 2010-11-22 | 2012-05-24 | Schaeffler Technologies Gmbh & Co. Kg | Switchable supporting member for valve train of combustion engine, has transverse channels crossing at outer casing, which opens out to axial channel directly in pressure chamber in front of inner front portion of coupling slider |
-
2011
- 2011-06-15 DE DE201110077530 patent/DE102011077530A1/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010052175A1 (en) | 2010-11-22 | 2012-05-24 | Schaeffler Technologies Gmbh & Co. Kg | Switchable supporting member for valve train of combustion engine, has transverse channels crossing at outer casing, which opens out to axial channel directly in pressure chamber in front of inner front portion of coupling slider |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012201056A1 (en) | 2012-01-25 | 2013-07-25 | Schaeffler Technologies AG & Co. KG | Shiftable valve drive element e.g. plunger, for internal combustion engine, has bending spring section preceding end projection at outer front of coupling piston, and adaptingly running at outer front as region of end piece of spring |
WO2015197055A1 (en) * | 2014-06-24 | 2015-12-30 | Schaeffler Technologies AG & Co. KG | Automatic valve play compensation device for a valve drive of a reciprocating-piston internal combustion engine |
DE102014213334A1 (en) | 2014-07-09 | 2016-01-14 | Schaeffler Technologies AG & Co. KG | Switchable valve drive member |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R079 | Amendment of ipc main class |
Free format text: PREVIOUS MAIN CLASS: F01L0001240000 Ipc: F01L0001180000 |
|
R081 | Change of applicant/patentee |
Owner name: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES AG & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20140214 Owner name: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20120827 Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20120827 Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES AG & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20140214 |
|
R081 | Change of applicant/patentee |
Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20150407 |
|
R005 | Application deemed withdrawn due to failure to request examination |