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WO2002029213A1 - Disconnectable support element - Google Patents

Disconnectable support element Download PDF

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Publication number
WO2002029213A1
WO2002029213A1 PCT/EP2001/009977 EP0109977W WO0229213A1 WO 2002029213 A1 WO2002029213 A1 WO 2002029213A1 EP 0109977 W EP0109977 W EP 0109977W WO 0229213 A1 WO0229213 A1 WO 0229213A1
Authority
WO
WIPO (PCT)
Prior art keywords
bore
inner element
outer housing
housing
slide
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
Application number
PCT/EP2001/009977
Other languages
German (de)
French (fr)
Inventor
Michael Haas
Bodo RÖRIG
Dieter Schmidt
Joachim Seitz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IHO Holding GmbH and Co KG
INA Waelzlager Schaeffler OHG
Original Assignee
INA Schaeffler KG
INA Waelzlager Schaeffler OHG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE2000148620 external-priority patent/DE10048620A1/en
Application filed by INA Schaeffler KG, INA Waelzlager Schaeffler OHG filed Critical INA Schaeffler KG
Priority to JP2002532768A priority Critical patent/JP2004522885A/en
Priority to AU2001287705A priority patent/AU2001287705A1/en
Priority to CA002421871A priority patent/CA2421871A1/en
Publication of WO2002029213A1 publication Critical patent/WO2002029213A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • F01L1/20—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
    • 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
    • F01L1/14—Tappets; Push rods
    • 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

Definitions

  • the invention relates to a switchable support element for a valve train of an internal combustion engine, with an outer housing, an inner element, a hydraulic lash adjuster and coupling means, the outer housing with its outer jacket being installed in a receptacle of a cylinder head and having a longitudinal bore in which the inner element is axially decoupled Movable, which has a further bore in which a pressure piston with a head is received as part of the play compensation element, the coupling means consisting of at least one bore running radially or secant in the inner element and in the outer housing and at least one associated slide, which bores in a relative position of the inner element to the outer housing are aligned with one another, and the slide for the coupling case is partially displaced from the bore of the outer housing into the bore of the inner element by means of a loading means is noticeable.
  • a generic support element is shown in DE 44 22 340 A1.
  • a saw called lost-motion compression spring which increases the overall length.
  • the bore for the slide in the inner element leads radially through the entire inner element and is arranged axially below the play compensation element. This results in an unfavorable nested construction. Since, for example, cooling water or gas exchange ducts run in the immediate area of the receptacle in the cylinder head for the support element, the installation depth of the relatively long support element is limited or existing cylinder heads have to be changed in a complex manner. However, these changes are often not possible, since this would represent an intervention in the flow conditions, in particular in the gas exchange channels.
  • the object of the invention is therefore to create a support element of the aforementioned type which can be switched off and in which the disadvantages cited are eliminated with simple means.
  • this object is achieved in that the bore of the inner element is made as a blind bore, the axial line of which intersects the further bore of the inner element.
  • the loading means for the slide which is manufactured, for example, as a rod
  • the loading means for the slide are to be installed in a housing which runs in the cylinder head and adjoins the receptacle of the outer housing.
  • a height stop for the inner element relative to the outer housing can also be realized in this area.
  • additional anti-rotation devices or height stop devices can be dispensed with.
  • the housing for the actuating means is expediently arranged in a region of the cylinder head which does not cut the cooling ducts, gas exchange ducts mentioned above, but also spark plug ducts, camshaft bearings and the like.
  • the slide with its loading means is therefore largely outside the support element and only engages it radially or secant-like. It is also conceivable for the slider to engage in a skewed manner or for direct coupling via, for example, balls, pawls or bolts which are acted upon by the slider, so that the latter is not a direct engagement element.
  • the slide is acted upon electromagnetically or hydraulically.
  • the latter itself can delimit a pressure chamber for hydraulic medium on its outer end face or can be designed as an actuator rod which is provided with an anchor plate for electromagnetic exposure.
  • the invention is explained in more detail with reference to the drawing.
  • the single figure shows a schematic representation of a support element that can be switched off in longitudinal section.
  • FIG. 1 discloses a support element 1 that can be switched off.
  • This consists of an outer housing 2, which is installed with its outer jacket 3 in a fixed position in a receptacle 4 of a cylinder head 5.
  • the outer housing 2 has a longitudinal bore 6.
  • An inner element 7 with its outer jacket 8 runs in this.
  • An axially movable pressure piston 10 is installed in a bore 9 of the inner element 7 as part of a hydraulic lash adjuster element 11, which is not explained in detail.
  • a high-pressure chamber 14 for hydraulic medium runs between a bottom 12 of the inner element 7 and a facing check valve 13.
  • a lost motion spring 14b is clamped between the bottom 12 and a bottom 14a of the outer housing 2.
  • the pressure piston 10 has a head 15 projecting beyond the inner element 7. This serves as a support for a switchable or non-switchable rocker arm, not shown in the drawing.
  • the inner element 7 and the outer housing 2 each have a bore 16, 17 which are aligned with one another in the illustration shown here.
  • the bore 16 of the inner element 7 is designed as a blind bore and runs on one Height of the pressure piston 10. It thus intersects the bore 9 of the inner element 7 with its axial line.
  • the bore 17 of the outer housing 2 is made as a through hole.
  • a housing section 18 of a housing 19 runs therein.
  • the inside of the housing section 18 extends into an axial groove 21 of the outer casing 8 and is laterally encompassed by this axial groove 21.
  • This design serves to prevent the inner element 7 from rotating relative to the outer housing 2 and thus a circumferential position assignment of the bores 16, 17. It can be provided that an axial shoulder 21, which engages under the inner side 20, also has an axial shoulder Location assignment of the holes 16, 17 is realized.
  • the bores 16, 17 are part of a coupling means 22.
  • Another component of the coupling means 22 is a slide 23, which is only indicated here in the drawing. It extends in the housing 19 or is enclosed by the housing section 18. Since, according to the variant shown here, the bores 16, 17 are aligned with one another, the slide 23 could be displaced in sections with its inner end face 25 into the bore 16 of the inner element 7 by the force of its action means 24. The support element 1 would thus be switched on and the gas exchange valve acted upon by the rocker arm would open in the sense of a maximum stroke.
  • the inner element 7 is thus displaced relative to the outer housing 2 when the cam is lifted.
  • the gas exchange valve would remain closed and the rocker arm would pivot on the support element side.
  • the support element 1 requires only a very small amount of space.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

The invention relates to a disconnectable, hydraulic support element (1), which has minimum space requirements. A bore (16) for a slide (23), configured as a blind bore runs at the side of a plunger (10) of a hydraulic play compensation element (11) in the internal element (7). The bore in the internal element no longer needs to be nested with the play compensation element, as is usually the case in prior art. The slider (23) is also integrated into a housing (19), which runs through the cylinder head (5).

Description

Bezeichnung der Erfindung Name of the invention

Abschaltbares AbstützelementSupport element that can be switched off

Beschreibungdescription

Gebiet der ErfindungField of the Invention

Die Erfindung betrifft ein abschaltbares Abstützelement für einen Ventiltrieb einer Brennkraftmaschine, mit einem Außengehäuse, einem Innenelement, einem hydraulischen Spielausgleichselement und Koppelmitteln, wobei das Außengehäuse mit seinem Außenmantel in eine Aufnahme eines Zylinderkopfes eingebaut ist und eine Längsbohrung hat, in welcher das Innenelement im Entkoppelfall axial beweglich verläuft, das eine weitere Bohrung besitzt, in der ein Druckkolben mit einem Kopf als Bestandteil des Spielausgleichselements aufgenommen ist, wobei die Koppelmittel aus wenigstens einer radial oder sekantenartig im Innenelement und in dem Außengehäuse verlaufenden Bohrung und wenigstens einem zugeordneten Schieber bestehen, welche Bohrungen in einer Relativstellung des. Innenelements zum Außengehäuse zueinander fluchten und wobei der Schieber für den Koppelfall über ein Beaufschlagungsmittel abschnittsweise von der Bohrung des Außengehäuses in die Bohrung des Innenelements verlagerbar ist.The invention relates to a switchable support element for a valve train of an internal combustion engine, with an outer housing, an inner element, a hydraulic lash adjuster and coupling means, the outer housing with its outer jacket being installed in a receptacle of a cylinder head and having a longitudinal bore in which the inner element is axially decoupled Movable, which has a further bore in which a pressure piston with a head is received as part of the play compensation element, the coupling means consisting of at least one bore running radially or secant in the inner element and in the outer housing and at least one associated slide, which bores in a relative position of the inner element to the outer housing are aligned with one another, and the slide for the coupling case is partially displaced from the bore of the outer housing into the bore of the inner element by means of a loading means is noticeable.

Hintergrund der ErfindungBackground of the Invention

Ein gattungsgemäßes Abstützelement geht aus der DE 44 22 340 A1 hervor. Zur Rückführung des dortigen Innenelements in Nockenrichtung ist eine söge- nannte lost-motion-Druckfeder vorgesehen, welche die Baulänge erhöht. Dabei führt die Bohrung für den Schieber im Innenelement radial durch das gesamte Innenelement und ist axial unterhalb des Spielausgleichselements angeordnet. Somit liegt eine ungünstige übereinander geschachtelte Bauweise vor. Da im unmittelbaren Bereich der Aufnahme im Zylinderkopf für das Abstützelement beispielsweise Kühlwasser- bzw. Gaswechselkanäle verlaufen, sind der Einbautiefe des relativ langen Abstützelements Grenzen gesetzt bzw. müssen an sich vorhandene Zylinderköpfe aufwändig geändert werden. Diese Änderungen sind jedoch oft nicht möglich, da dies einen Eingriff in die Strömungsverhältnis- se, insbesondere in den Gaswechselkanälen darstellen würde.A generic support element is shown in DE 44 22 340 A1. To return the inner element there in the cam direction, a saw called lost-motion compression spring, which increases the overall length. The bore for the slide in the inner element leads radially through the entire inner element and is arranged axially below the play compensation element. This results in an unfavorable nested construction. Since, for example, cooling water or gas exchange ducts run in the immediate area of the receptacle in the cylinder head for the support element, the installation depth of the relatively long support element is limited or existing cylinder heads have to be changed in a complex manner. However, these changes are often not possible, since this would represent an intervention in the flow conditions, in particular in the gas exchange channels.

Aufgabe der ErfindungObject of the invention

Aufgabe der Erfindung ist es daher, ein abschaltbares Abstützelement der vor- genannten Art zu schaffen, bei welchem die zitierten Nachteile mit einfachen Mitteln beseitigt sind.The object of the invention is therefore to create a support element of the aforementioned type which can be switched off and in which the disadvantages cited are eliminated with simple means.

Zusammenfassung der ErfindungSummary of the invention

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, dass die Bohrung des Innenelements als Sackbohrung gefertigt ist, deren Axiallinie die weitere Bohrung des Innenelements schneidet.According to the invention, this object is achieved in that the bore of the inner element is made as a blind bore, the axial line of which intersects the further bore of the inner element.

Somit sind mit einfachen Mitteln die vorgenannten Nachteile beseitigt. Die bis- her im Stand der Technik vorzufindende übereinander geschachtelte Ausbildung des Spielausgleichselements mit der Bohrung im Innenelement für den Schieber ist vermieden. Somit liegt ein abschaltbares Abstützelement vor, das kürzer als die Lösungen gemäß dem o. g. Stand der Technik baut und somit leicht in bisher ausgeführte Zylinderköpfe eingebaut werden kann.The aforementioned disadvantages are thus eliminated with simple means. The stacked configuration of the play compensation element with the bore in the inner element for the slide, which was previously found in the prior art, is avoided. Thus there is a support element that can be switched off and is shorter than the solutions according to the above-mentioned. State of the art builds and can therefore be easily installed in previously executed cylinder heads.

Selbstverständlich können auch mehrere umfangsverteilte Koppelmittel appli- ziert werden, wodurch sich höhere Belastbarkeiten ergeben. Die Beaufschlagungsmittel für den beispielsweise als Stange gefertigten Schieber sollen gemäß einer zweckmäßigen Ausbildung der Erfindung in einem Gehäuse eingebaut sein, das im Zylinderkopf verläuft und an die Aufnahme des Außengehäuses angrenzt. Gleichzeitig ist es vorgeschlagen, über eine Innenstirnseite eines Gehäuseabschnitts eine einfache Verdrehsicherung des Innenelements gegenüber dem Außengehäuse zu schaffen. Zudem kann auch in diesem Bereich ein Höhenanschlag für das Innenelement gegenüber dem Außengehäuse realisiert sein. Aufgrund dieser Maßnahmen kann auf weitere Verdrehsicherungs- bzw. Höhenanschlagmittel verzichtet werden. Das Gehäu- se für die Beaufschlagungsmittel ist in zweckmäßiger Weise in einem Bereich des Zylinderkopfes angeordnet, der nicht die eingangs genannten Kühlkanäle, Gaswechselkanäle aber auch Zündkerzenschächte, Nockenwellenlager und ähnliches schneidet.Of course, several coupling means distributed around the circumference can also be applied, which results in higher load capacities. According to an expedient embodiment of the invention, the loading means for the slide, which is manufactured, for example, as a rod, are to be installed in a housing which runs in the cylinder head and adjoins the receptacle of the outer housing. At the same time, it is proposed to create a simple anti-rotation device for the inner element relative to the outer housing via an inner end face of a housing section. In addition, a height stop for the inner element relative to the outer housing can also be realized in this area. As a result of these measures, additional anti-rotation devices or height stop devices can be dispensed with. The housing for the actuating means is expediently arranged in a region of the cylinder head which does not cut the cooling ducts, gas exchange ducts mentioned above, but also spark plug ducts, camshaft bearings and the like.

Der Schieber mit seinem Beaufschlagungsmittel liegt somit weitestgehend außerhalb des Abstützelements und greift dieses nur radial bzw. sekantenartig an. Denkbar ist auch ein windschiefer Eingriff des Schiebers bzw. eine unmittelbare Kopplung über beispielsweise Kugeln, Klinken oder Bolzen, welche vom Schieber beaufschlagt werden, so dass dieser nicht unmittelbares Ein- griffsglied ist.The slide with its loading means is therefore largely outside the support element and only engages it radially or secant-like. It is also conceivable for the slider to engage in a skewed manner or for direct coupling via, for example, balls, pawls or bolts which are acted upon by the slider, so that the latter is not a direct engagement element.

Gemäß einer weiteren zweckmäßigen Fortbildung der Erfindung ist es vorgesehen, den Schieber elektromagnetisch bzw. hydraulisch zu beaufschlagen. Beispielsweise kann dieser selbst an seiner Außenstirnseite einen Druckraum für Hydraulikmittel begrenzen bzw. als Aktuatorstange ausgebildet sein, die mit einer Ankerplatte für eine elektromagnetische Beaufschlagung versehen ist.According to a further expedient development of the invention, it is provided that the slide is acted upon electromagnetically or hydraulically. For example, the latter itself can delimit a pressure chamber for hydraulic medium on its outer end face or can be designed as an actuator rod which is provided with an anchor plate for electromagnetic exposure.

Schließlich ist es vorgesehen, auch Rückstellmittel für den Schieber entgegen der Kraft des elektromagnetischen bzw. hydraulischen Beaufschlagungsmittels mit in das Gehäuse einzubauen. Dies ist eine weitere Maßnahme in Richtung Verkleinerung des schaltbaren Abstützelements. Mit vom Schutzumfang der Erfindung einbezogen ist auch eine Lösung, bei welcher das Abstützelement nicht vollständig sondern nur lediglich teilweise vom Nockenhub abschaltbar ist. Denkbar ist es auch, Abschaltstufen durch auf unterschiedlicher Höhe angeordnete Bohrungen im Innenelement für den Schieber zu realisieren.Finally, provision is also made to incorporate restoring means for the slide against the force of the electromagnetic or hydraulic loading means into the housing. This is a further measure in the direction of downsizing the switchable support element. Also included in the scope of the invention is a solution in which the support element cannot be switched off completely but only partially from the cam lift. It is also conceivable to implement switch-off stages by means of bores arranged at different heights in the inner element for the slide.

Kurze Beschreibung der ZeichnungBrief description of the drawing

Die Erfindung ist anhand der Zeichnung näher erläutert. Es zeigt die einzige Figur in einer schematischen Darstellung ein abschaltbäres Abstützelement im Längsschnitt.The invention is explained in more detail with reference to the drawing. The single figure shows a schematic representation of a support element that can be switched off in longitudinal section.

Ausführliche Beschreibung der ZeichnungDetailed description of the drawing

Die Figur 1 offenbart ein abschaltbares Abstützelement 1. Dieses besteht aus einem Außengehäuse 2, das mit seinem Außenmantel 3 ortsfest in eine Aufnahme 4 eines Zylinderkopfes 5 eingebaut ist. Das Außengehäuse 2 hat eine Längsbohrung 6. In dieser verläuft ein Innenelement 7 mit seinem Außenmantel 8. In eine Bohrung 9 des Innenelements 7 ist ein axial beweglicher Druck- kolben 10 als Bestandteil eines nicht näher erläuterten hydraulischen Spielausgleichselements 11 eingebaut. Zwischen einem Boden 12 des Innenelements 7 und einem zugewandten Rückschlagventil 13 verläuft ein Hochdruckraum 14 für Hydraulikmittel. Gleichzeitig ist zwischen dem Boden 12 und einem Boden 14a des Außengehäuses 2 eine lost-motion-Feder 14b ein- gespannt. Zudem offenbart die Figur, dass der Druckkolben 10 einen das Innenelement 7 überragenden Kopf 15 hat. Dieser dient als Abstützung für einen zeichnerisch nicht dargestellten schaltbaren bzw. nichtschaltbaren Schlepphebel.FIG. 1 discloses a support element 1 that can be switched off. This consists of an outer housing 2, which is installed with its outer jacket 3 in a fixed position in a receptacle 4 of a cylinder head 5. The outer housing 2 has a longitudinal bore 6. An inner element 7 with its outer jacket 8 runs in this. An axially movable pressure piston 10 is installed in a bore 9 of the inner element 7 as part of a hydraulic lash adjuster element 11, which is not explained in detail. A high-pressure chamber 14 for hydraulic medium runs between a bottom 12 of the inner element 7 and a facing check valve 13. At the same time, a lost motion spring 14b is clamped between the bottom 12 and a bottom 14a of the outer housing 2. In addition, the figure discloses that the pressure piston 10 has a head 15 projecting beyond the inner element 7. This serves as a support for a switchable or non-switchable rocker arm, not shown in the drawing.

Das Innenelement 7 sowie das Außengehäuse 2 besitzen je eine Bohrung 16, 17, die in der hier gezeigten Darstellung zueinander fluchten. Die Bohrung 16 des Innenelements 7 ist als Sackbohrung ausgebildet und verläuft auf einer Höhe des Druckkolbens 10. Sie schneidet somit mit ihrer Axiallinie die Bohrung 9 des Innenelements 7.The inner element 7 and the outer housing 2 each have a bore 16, 17 which are aligned with one another in the illustration shown here. The bore 16 of the inner element 7 is designed as a blind bore and runs on one Height of the pressure piston 10. It thus intersects the bore 9 of the inner element 7 with its axial line.

Die Bohrung 17 des Außengehäuses 2 hingegen ist als Durchgangsbohrung gefertigt. In dieser verläuft ein Gehäuseabschnitt 18 eines Gehäuses 19. Der Gehäuseabschnitt 18 erstreckt sich mit seiner Innenseite 20 in eine Axialnut 21 des Außenmantels 8 und ist von dieser Axialnut 21 seitlich umfasst. Diese Ausbildung dient als Verdrehsicherung des Innenelements 7 gegenüber dem Außengehäuse 2 und somit einer umfangsmäßigen Lagezuordnung der Boh- rungen 16, 17. Vorgesehen kann es sein, dass über einen zeichnerisch nicht dargestellten Absatz der Axialnut 21 , welcher die Innenseite 20 untergreift, auch eine axiale Lagezuordnung der Bohrungen 16, 17 realisiert ist.The bore 17 of the outer housing 2, however, is made as a through hole. A housing section 18 of a housing 19 runs therein. The inside of the housing section 18 extends into an axial groove 21 of the outer casing 8 and is laterally encompassed by this axial groove 21. This design serves to prevent the inner element 7 from rotating relative to the outer housing 2 and thus a circumferential position assignment of the bores 16, 17. It can be provided that an axial shoulder 21, which engages under the inner side 20, also has an axial shoulder Location assignment of the holes 16, 17 is realized.

Die Bohrungen 16, 17 sind Bestandteil eines Koppelmittels 22. Weiterer Be- standteil des Koppelmittels 22 ist ein hier zeichnerisch nur angedeuteter Schieber 23. Dieser verläuft im Gehäuse 19 bzw. ist vom Gehäuseabschnitt 18 umschlossen. Da gemäß der hier dargestellten Variante die Bohrungen 16, 17 zueinander fluchten, könnte der Schieber 23 über die Kraft seines Beaufschlagungsmittels 24 mit seiner Innenstirnseite 25 abschnittsweise in die Bohrung 16 des Innenelements 7 verschoben werden. Das Abstützelement 1 wäre somit zugeschaltet und das vom Schlepphebel beaufschlagte Gaswechselventil würde im Sinne eines Maximalhubes öffnen. Für den Abschaltfall würde das Beaufschlagungsmittel 24 bzw. ein auf den Schieber 23 einwirkendes Rückstellmittel (nicht dargestellt) wie eine Druckfeder den Schieber 23 soweit in das Gehäuse 19 rückverlagern, dass die Bohrung 16 des Innenelements 7 freigegeben ist. Das Innenelement 7 wird somit relativ zum Außengehäuse 2 bei Nockenhub verschoben. Das Gaswechselventil bliebe geschlossen und der Schlepphebel würde auf der Abstützelementseite verschwenken.The bores 16, 17 are part of a coupling means 22. Another component of the coupling means 22 is a slide 23, which is only indicated here in the drawing. It extends in the housing 19 or is enclosed by the housing section 18. Since, according to the variant shown here, the bores 16, 17 are aligned with one another, the slide 23 could be displaced in sections with its inner end face 25 into the bore 16 of the inner element 7 by the force of its action means 24. The support element 1 would thus be switched on and the gas exchange valve acted upon by the rocker arm would open in the sense of a maximum stroke. In the event of a shutdown, the loading means 24 or a restoring means (not shown) acting on the slider 23, like a compression spring, would move the slider 23 back into the housing 19 to such an extent that the bore 16 of the inner element 7 is released. The inner element 7 is thus displaced relative to the outer housing 2 when the cam is lifted. The gas exchange valve would remain closed and the rocker arm would pivot on the support element side.

Besonderer Vorteil der Erfindung ist es, dass das Abstützelement 1 nur einen sehr geringen Bauraum benötigt. Durch die seitlich des Druckkolbens 10 angeordnete Bohrung 16 in dem Innenelement 7, die hier lediglich als Sackbohrung gefertigt ist, entfällt die bisher im Stand der Technik übereinander geschach- telte Bauweise der Durchgangsbohrung im Innenelement für den Schieber mit dem hydraulischen Spielausgleichselement. It is a particular advantage of the invention that the support element 1 requires only a very small amount of space. The bore 16 in the inner element 7 arranged laterally of the pressure piston 10, which is here only made as a blind bore, eliminates the hitherto chess stacked in the prior art. Partial design of the through hole in the inner element for the slide with the hydraulic lash adjuster.

Liste der BezugszahlenList of reference numbers

Abstützelement AußengehäuseSupport element outer housing

Außenmantelouter sheath

Aufnahmeadmission

Zylinderkopfcylinder head

Längsbohrunglongitudinal bore

Innenelementfemale member

Außenmantelouter sheath

Bohrungdrilling

Druckkolben hydraulisches SpielausgleichselementPressure piston hydraulic lash adjuster

Bodenground

Rückschlagventilcheck valve

Hochdruckraum a Boden b lost-motion-FederHigh pressure room a floor b lost motion spring

Kopfhead

Bohrungdrilling

Bohrungdrilling

Gehäuseabschnitthousing section

Gehäusecasing

Innenseiteinside

Axialnutaxial groove

Koppelmittelcoupling means

Schieberpusher

Beaufschlagungsmittelbiasing

Innenstirnseite Inside front side

Claims

Patentansprüche claims 1. Abschaltbares Abstützelement (1) für einen Ventiltrieb einer Brennkraftmaschine, mit einem Außengehäuse (2), einem Innenelement (7), einem hydraulischen Spielausgleichselement (11) und Koppelmitteln (22), wobei das Außengehäuse (2) mit seinem Außenmantel (3) in eine Aufnahme (4) eines Zylinderkopfes (5) eingebaut ist und eine Längsbohrung (6) hat, in welcher das Innenelement (7) im Entkoppelfall axial beweglich verläuft, das eine weitere Bohrung (9) besitzt, in der ein Druckkolben (10) mit einem Kopf (15) als Bestandteil des Spielausgleichselements (11) aufgenommen ist, wobei die Koppelmittel (22) aus wenigstens einer radial oder sekantenartig im Innenelement (7) und in dem Außengehäuse (2) verlaufenden Bohrung (16, 17) und wenigstens einem zugeordneten Schieber (23) bestehen, welche1. Switchable support element (1) for a valve train of an internal combustion engine, with an outer housing (2), an inner element (7), a hydraulic play compensation element (11) and coupling means (22), the outer housing (2) with its outer jacket (3) is installed in a receptacle (4) of a cylinder head (5) and has a longitudinal bore (6) in which the inner element (7) is axially movable in the case of decoupling, which has a further bore (9) in which a pressure piston (10) with a head (15) as part of the play compensation element (11), the coupling means (22) consisting of at least one bore (16, 17) running radially or secant in the inner element (7) and in the outer housing (2) and at least one assigned slide (23), which Bohrungen (16, 17) in einer Relativstellung des Innenelements (7) zum Außengehäuse (2) zueinander fluchten und wobei der Schieber (23) für den Koppelfall über ein Beaufschlagungsmittel (24) abschnittsweise von der Bohrung (17) des Außengehäuses (2) in die Bohrung (16) des Innenele- ments (7) verlagerbar ist, dadurch gekennzeichnet, dass die Bohrung (16) des Innenelements (7) als Sackbohrung gefertigt ist, deren Axiallinie die weitere Bohrung (9) des Innenelements (7) schneidet.Bores (16, 17) in a relative position of the inner element (7) to the outer housing (2) are aligned with one another and the slider (23) for coupling is connected in sections via a loading means (24) from the bore (17) of the outer housing (2) the bore (16) of the inner element (7) is displaceable, characterized in that the bore (16) of the inner element (7) is made as a blind bore, the axial line of which intersects the further bore (9) of the inner element (7). 2. Abstützelement nach Anspruch 1 , dadurch gekennzeichnet, dass der Schieber (23) als Stange ausgebildet ist, die im Entkoppelfall mit ihrer Innenstirnseite (25) vor der Bohrung (16) des Innenelements (7) verläuft, wobei das Beaufschlagungsmittel (24) in einem in den Zylinderkopf (5) eingebauten Gehäuse (19) verläuft, das sich mit einem dem Abstützelement (1) zugewandten Gehäuseabschnitt (18) durch die Bohrung (17) des Außenge- häuses (2) erstreckt und über eine Innenseite (20) in einer Axialnut (21) oder an einer Abflachung eines Außenmantels (8) des Innenelements (7) geführt ist. 2. Support element according to claim 1, characterized in that the slide (23) is designed as a rod which, in the case of decoupling, runs with its inner end face (25) in front of the bore (16) of the inner element (7), the loading means (24) in a housing (19) installed in the cylinder head (5), which extends with a housing section (18) facing the support element (1) through the bore (17) of the outer housing (2) and over an inside (20) in an axial groove (21) or on a flat surface of an outer casing (8) of the inner element (7). 3. Abstützelement nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Schieber (23) über ein elektromagnetisches bzw. hydraulisches Beaufschlagungsmittel (24) verlagerbar ist.3. Supporting element according to claim 1 or 2, characterized in that the slide (23) can be displaced via an electromagnetic or hydraulic loading means (24). 4. Abstützelement nach Anspruch 3, sofern dieser auf Anspruch 2 rückbezogen ist, dadurch gekennzeichnet, dass dem Schieber (23) Rückstellmittel wie wenigstens eine Druckfeder zugeordnet sind, die entgegen einer Verstellrichtung des Beaufschlagungsmittels (24) wirken und mit in das Gehäuse (19) eingebaut sind. 4. Support element according to claim 3, insofar as this is related to claim 2, characterized in that the slide (23) is associated with restoring means such as at least one compression spring, which act counter to an adjustment direction of the loading means (24) and into the housing (19). are installed.
PCT/EP2001/009977 2000-09-30 2001-08-30 Disconnectable support element Ceased WO2002029213A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2002532768A JP2004522885A (en) 2000-09-30 2001-08-30 Removable support member
AU2001287705A AU2001287705A1 (en) 2000-09-30 2001-08-30 Disconnectable support element
CA002421871A CA2421871A1 (en) 2000-09-30 2001-08-30 Disconnectable support element

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE2000148620 DE10048620A1 (en) 2000-09-30 2000-09-30 Switchable support element for valve drive of internal combustion engine has bore for slider formed as blind bore in inner element with axial line intersecting further bore of inner element
DE10048620.7 2000-09-30
US23730000P 2000-10-02 2000-10-02
US60/237,300 2000-10-02

Publications (1)

Publication Number Publication Date
WO2002029213A1 true WO2002029213A1 (en) 2002-04-11

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PCT/EP2001/009977 Ceased WO2002029213A1 (en) 2000-09-30 2001-08-30 Disconnectable support element

Country Status (3)

Country Link
JP (1) JP2004522885A (en)
AU (1) AU2001287705A1 (en)
WO (1) WO2002029213A1 (en)

Cited By (4)

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Publication number Priority date Publication date Assignee Title
JP2004286028A (en) * 2003-03-19 2004-10-14 Eaton Corp Dual valve lift and valve deactivation
EP1544422A1 (en) * 2003-11-05 2005-06-22 EATON AUTOMOTIVE S.p.A. Valve deactivation system and latchable hydraulic lash adjuster therefore
WO2007080488A3 (en) * 2006-01-10 2007-09-27 Eaton Corp Valve control system including deactivating rocker arm
DE102006047447A1 (en) * 2006-10-07 2008-04-10 Schaeffler Kg Rocker arm support arrangement for use in intake/exhaust valve drive for internal combustion (IC) engine, has snap ring, which serves as anti-twist plate, fitted around annular groove around outer casing of housing of rocker arm support

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Publication number Priority date Publication date Assignee Title
JP2008190392A (en) * 2007-02-02 2008-08-21 Otics Corp Variable valve mechanism

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EP0608925A1 (en) * 1993-01-28 1994-08-03 General Motors Corporation Compact valve-lifters
WO1994021899A1 (en) * 1993-03-25 1994-09-29 Lotus Cars Limited Valve control means
DE4422340A1 (en) 1993-07-14 1995-01-19 Bayerische Motoren Werke Ag Shut-off device for an internal combustion engine lifting valve
DE4442965A1 (en) * 1994-12-02 1996-06-05 Audi Ag Switchable valve for internal combustion engine
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JPS59168208A (en) * 1983-03-15 1984-09-21 Honda Motor Co Ltd Valve driving mechanism for internal-combustion engine having function to render part of mechanism inoperative
EP0608925A1 (en) * 1993-01-28 1994-08-03 General Motors Corporation Compact valve-lifters
WO1994021899A1 (en) * 1993-03-25 1994-09-29 Lotus Cars Limited Valve control means
DE4422340A1 (en) 1993-07-14 1995-01-19 Bayerische Motoren Werke Ag Shut-off device for an internal combustion engine lifting valve
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004286028A (en) * 2003-03-19 2004-10-14 Eaton Corp Dual valve lift and valve deactivation
EP1544422A1 (en) * 2003-11-05 2005-06-22 EATON AUTOMOTIVE S.p.A. Valve deactivation system and latchable hydraulic lash adjuster therefore
WO2007080488A3 (en) * 2006-01-10 2007-09-27 Eaton Corp Valve control system including deactivating rocker arm
DE102006047447A1 (en) * 2006-10-07 2008-04-10 Schaeffler Kg Rocker arm support arrangement for use in intake/exhaust valve drive for internal combustion (IC) engine, has snap ring, which serves as anti-twist plate, fitted around annular groove around outer casing of housing of rocker arm support

Also Published As

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JP2004522885A (en) 2004-07-29
AU2001287705A1 (en) 2002-04-15

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