EP1785595B1 - Switchable rocker arm of a valve train of an internal combustion engine - Google Patents

Switchable rocker arm of a valve train of an internal combustion engine Download PDF

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Publication number
EP1785595B1
EP1785595B1 EP06122627A EP06122627A EP1785595B1 EP 1785595 B1 EP1785595 B1 EP 1785595B1 EP 06122627 A EP06122627 A EP 06122627A EP 06122627 A EP06122627 A EP 06122627A EP 1785595 B1 EP1785595 B1 EP 1785595B1
Authority
EP
European Patent Office
Prior art keywords
lever
face
valve
valve rocker
lifting
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.)
Not-in-force
Application number
EP06122627A
Other languages
German (de)
French (fr)
Other versions
EP1785595A1 (en
Inventor
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
Original Assignee
Schaeffler KG
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Filing date
Publication date
Application filed by Schaeffler KG filed Critical Schaeffler KG
Publication of EP1785595A1 publication Critical patent/EP1785595A1/en
Application granted granted Critical
Publication of EP1785595B1 publication Critical patent/EP1785595B1/en
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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
    • 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
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F01L13/0036—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
    • 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
    • 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
    • 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
    • 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
    • F01L1/181—Centre pivot rocking arms
    • F01L1/182—Centre pivot rocking arms the rocking arm being pivoted about an individual fulcrum, i.e. not about a common shaft
    • 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
    • F01L2001/186—Split rocking arms, e.g. rocker arms having two articulated parts and means for varying the relative position of these parts or for selectively connecting the parts to move in unison
    • 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
    • F01L2305/00—Valve arrangements comprising rollers
    • 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
    • F01L2820/00—Details on specific features characterising valve gear arrangements
    • F01L2820/03—Auxiliary actuators
    • F01L2820/031—Electromagnets
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2101—Cams
    • Y10T74/2107—Follower

Definitions

  • the invention relates to a switchable rocker arm of a valve train of an internal combustion engine, with an inner and a surrounding with its arms outer lever, the levers on a common axis relative to each other pivotally movable and coupling means are connected to each other in such a way that when coupled a large and at Decoupling a small or 0-valve stroke is generated, wherein the inner lever at one end at one end a system for a gas exchange valve and at the other end a complementary surface for a support element and the outer lever on each arm, a contact surface for a quasihubnocken and the inner lever a contact surface for has a small or 0-lift cam, wherein between the levers a lost-motion spring is provided, the arms of the outer lever terminate at one end immediately after their contact surfaces in end faces, wherein the inner lever, at least with a portion whose attachment for the ga Changeover valve, protrudes longitudinally beyond the end faces of the arms of the outer lever.
  • the object of the invention is therefore to provide a drag lever of the aforementioned type, in which the cited disadvantages are eliminated.
  • a drag lever is to be created, which is optimized in terms of its moment of inertia and the deflection.
  • this object is achieved in that the axis, viewed in the longitudinal direction of the drag lever from the other end, is arranged behind the complementary surface for the support element and in front of the contact surfaces for the lift cams.
  • a lost-motion spring at least one rotary leg spring, which is expediently clamped on the axis between an arm of the outer lever and the inner lever.
  • two lost-motion springs are provided which extend within the arms of the outer lever.
  • it is intended to other lost-motion springs such as helical compression springs or the like, which act between the levers. Due to the use of rotary torsion springs is a switchable drag lever, which in particular does not build high and has a compact design.
  • the proposed slide (piston) above the complementary surface in the inner lever as a coupling means can be very easily displaced in at least one direction by means of hydraulic medium which can be led out of the head of the support element and a short channel.
  • a provision can be made via the force of a mechanical spring means such as a helical compression or helical tension spring.
  • Other coupling means such as slide packages, balls, wedges, etc. may be provided.
  • an alternative imposition such as a magnetic, electromagnetic, etc. is thought.
  • the outer lever forms a box or U-profile and is connected at one end by the crossbar.
  • the crossbeam stabilizes on the one hand the outer lever, on the other he serves with its top as an excellent stop surface for the coupling agent.
  • a stop is provided. This can either be formed as an end of the inner lever at the other end outgoing approach that communicates with an underside of the crossbar.
  • the arms of the outer lever can be connected in the region of a transverse center plane of the finger lever by a transverse bar on the underside, on which the inner lever abuts with a lower surface.
  • an aligned assignment of the coupling means is created to its corresponding counter surface. It is clear that in this area, a low coupling play must be provided. This can be created by varying a height of the complementary surface on the crossbar or the height of the cross-girder crosswise below. Possibly. appropriate voting enclosures may be set up in these areas.
  • At least one of the levers should consist of a lightweight material such as sheet metal.
  • a lightweight material such as sheet metal.
  • the rocker arm if it consists of sheet material, to be represented with its essential components in a stamping bending process in mass production.
  • the region of the inner lever with the complementary surface at the other end may be provided separately between the side walls of the inner lever. However, a separate arrangement is provided behind a corresponding end-side end face of the inner lever. Alternatively, the region of the complementary surface with the corresponding receptacle for the coupling means can also experience a one-piece design with the inner lever.
  • a rotatable roller In concretization of the invention as a contact surface in the inner lever a rotatable roller and are provided as contact surfaces on the outer lever sliding surfaces.
  • all contact surfaces are provided with rotatable rollers or all contact surfaces only with sliding surfaces or that the contact surfaces on the outer lever are rotatable rollers and the contact surface is formed on the inner lever by a sliding surface.
  • the figures disclose a switchable drag lever 1 of a valve train of an internal combustion engine.
  • This consists of a U-like in plan view, thin-walled outer lever 4, between the arms 2, a bar-like inner lever 3 is received with its side walls 19.
  • the levers 3, 4 extend on a common axis 5 relative to each other pivotally.
  • the axis 5 is in the range of a transverse center plane of the finger lever.
  • the inner lever 3 has at one end 8 at a bottom 7 a system 9 for at least one gas exchange valve. At the other end 10, the inner lever 3 at the bottom 7 has a complementary surface 11 for mounting on a head of a support element. At the same time it can be seen that above the complementary surface 11 a longitudinally displaceable slider is positioned as a coupling means 6. This can be moved via hydraulic means in its coupling position. The latter can be conducted via a direct channel 27 from the head of the support element in front of an inner end of the coupling means 6.
  • the coupling means 6 is hydraulically extended in sections from the inner lever 3, for which a crossbar 16 at the other end 10, which connects the arms 2 of the outer lever 4, on its upper side 18 has a complementary surface 17.
  • the inner lever 3 has in this transverse region between its side walls 19 a rotatable and preferably roller bearing roller, which serves as a contact surface 13, for example, for a low-lift cam.
  • the axis 5 is provided with two lost-motion springs 14, which are designed here as torsion torsion springs. These springs 14 extend axially between the arms 2 of the outer lever 4 and the arms 19 of the inner lever 3. To create the appropriate space, the arms 2 of the outer lever 4 are formed in this area box-like.
  • a crossbar 26 may be used, which connects the arms 2 of the outer lever 4 approximately in the region of a transverse center plane of the finger lever 1, the inner lever 3 under cross-connects.
  • the inner lever 3 come into contact with a suitable region of its underside 7 on an upper side of the crossbar 26.
  • a reduction in the mass moment of inertia of the entire finger lever 1 can be achieved around this pivot point, which can lead to an increase in the maximum speed in the coupled state of the finger lever 1.
  • the mass moment of inertia of the outer lever 4 is reduced about the axis 5 in the decoupled state.
  • the outer lever 4 no longer experiences the relatively high deflection in the coupling state when cam is applied as in the cited prior art.
  • the outer lever 4 may be dimensioned weaker.

Landscapes

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

Description

Gebiet der ErfindungField of the invention

Die Erfindung betrifft einen schaltbaren Schlepphebel eines Ventiltriebs einer Brennkraftmaschine, mit einem Innen- und einem diesen mit seinen Armen umschließenden Außenhebel, wobei die Hebel auf einer gemeinsamen Achse relativ zueinander verschwenkbeweglich verlaufen und über Koppelmittel derartig miteinander verbindbar sind, dass bei Kopplung ein großer und bei Entkopplung ein kleiner oder 0-Ventilhub generiert ist, wobei der Innenhebel an einer Unterseite an einem Ende eine Anlage für ein Gaswechselventil und am anderen Ende eine Komplementärfläche für ein Abstützelement sowie der Außenhebel auf jedem Arm eine Anlauffläche für einen Großhubnocken und der Innenhebel eine Anlauffläche für einen Klein- oder 0-Hubnocken besitzt, wobei zwischen den Hebeln eine Lost-Motion-Feder vorgesehen ist, wobei die Arme des Außenhebels am einen Ende unmittelbar nach deren Anlaufflächen in Stirnseiten enden, wobei der Innenhebel, zumindest mit einem Bereich dessen Anlage für das Gaswechselventil, längs über die Stirnseiten der Arme des Außenhebels hinaussteht.The invention relates to a switchable rocker arm of a valve train of an internal combustion engine, with an inner and a surrounding with its arms outer lever, the levers on a common axis relative to each other pivotally movable and coupling means are connected to each other in such a way that when coupled a large and at Decoupling a small or 0-valve stroke is generated, wherein the inner lever at one end at one end a system for a gas exchange valve and at the other end a complementary surface for a support element and the outer lever on each arm, a contact surface for a Großhubnocken and the inner lever a contact surface for has a small or 0-lift cam, wherein between the levers a lost-motion spring is provided, the arms of the outer lever terminate at one end immediately after their contact surfaces in end faces, wherein the inner lever, at least with a portion whose attachment for the ga Changeover valve, protrudes longitudinally beyond the end faces of the arms of the outer lever.

Hintergrund der ErfindungBackground of the invention

Ein derartiger Schlepphebel geht aus der als gattungsbildend betrachteten DE 103 47 329 A1 hervor. Nachteilig ist bei diesem dessen relativ großes Massenträgheitsmoment um die Achse am anderen Ende. Damit einher geht, dass auch die den Außenhebel im Abschaltfall zurückführende Lost-Motion-Feder relativ stark ausgelegt werden muss. Die Reibarbeit ist erhöht und gleichzeitig kann die maximal fahrbare Drehzahl ggf. begrenzt sein. Auch findet am Außenhebel bei dessen Kopplung eine unnötig große Durchbiegung bei Nockenbeaufschlagung statt.Such a drag lever goes out of the class considered as generic DE 103 47 329 A1 out. The disadvantage of this is its relatively large moment of inertia about the axis at the other end. This goes hand in hand with the fact that the Lost Motion spring, which returns the outer lever in the event of a shutdown, also has to be designed relatively strong. The friction work is increased and at the same time the maximum mobile speed may be limited. Also takes place at the outer lever in the coupling an unnecessarily large deflection at Nockenbeaufschlagung.

Aufgabe der ErfindungObject of the invention

Aufgabe der Erfindung ist es daher, einen Schlepphebel der vorgenannten Art zu schaffen, bei dem die zitierten Nachteile beseitigt sind. Insbesondere soll ein Schlepphebel geschaffen werden, der hinsichtlich seines Massenträgheitsmoments und der Durchbiegung optimiert ist.The object of the invention is therefore to provide a drag lever of the aforementioned type, in which the cited disadvantages are eliminated. In particular, a drag lever is to be created, which is optimized in terms of its moment of inertia and the deflection.

Lösung der AufgabeSolution of the task

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, dass die Achse, in Längsrichtung des Schlepphebels vom anderen Ende aus gesehen, hinter der Komplementärfläche für das Abstützelement und vor den Anlaufflächen für die Hubnocken angeordnet ist.According to the invention, this object is achieved in that the axis, viewed in the longitudinal direction of the drag lever from the other end, is arranged behind the complementary surface for the support element and in front of the contact surfaces for the lift cams.

Somit sind die eingangs zitierten Nachteile wirkungsvoll beseitigt. Insbesondere ist an einen schaltbaren Schlepphebel mit Längsverriegelung gedacht, bei dem ein schieberartiges Koppelmittel oberhalb der Komplementärfläche für das Abstützelement im Innenhebel verläuft und längs mit einem Querbalken des Außenhebels am anderen Ende in Eingriff bringbar ist. Ggf. ist jedoch auch ein Schlepphebel mit Querverriegelung vorgesehen.Thus, the disadvantages cited above are effectively eliminated. In particular, thought of a switchable rocker arm with longitudinal locking, in which a slider-like coupling means extends above the complementary surface for the support element in the inner lever and along with a crossbar of Outer lever at the other end is engageable. Possibly. However, a drag lever with transverse locking is provided.

Im Vergleich zum beschreibungseinleitend zitierten Stand der Technik ist mit einer Reduzierung des Massenträgheitsmoments um den Schwenkpunkt (Komplementärfläche) zu rechnen. Hierdurch können ggf. größere Maximaldrehzahlen gefahren werden. Gleichzeitig ist die Durchbiegung des Außenhebels bei Nockenkontakt und Kopplung verringert, so dass der Schlepphebel schwächer dimensioniert werden kann.In comparison to the introductory cited prior art is to be expected with a reduction of the moment of inertia about the pivot point (complementary surface). As a result, larger maximum speeds may possibly be driven. At the same time the deflection of the outer lever is reduced in cam contact and coupling, so that the drag lever can be dimensioned smaller.

In Konkretisierung der Erfindung ist es vorgeschlagen, als Lost-Motion-Feder wenigstens eine Drehschenkelfeder vorzusehen, die zweckmäßigerweise auf der Achse zwischen einem Arm des Außenhebels und dem Innenhebel eingespannt ist. Vorzugsweise sind zwei Lost-Motion-Federn vorgesehen, die innerhalb der Arme des Außenhebels verlaufen. Alternativ ist auch an andere Lost-Motion-Federn wie Schraubendruckfedern oder dergleichen gedacht, die zwischen den Hebeln wirken. Aufgrund des Einsatzes der Drehschenkelfedern liegt ein schaltbarer Schlepphebel vor, der insbesondere nicht hoch baut und eine kompakte Bauform besitzt.In concretization of the invention, it is proposed to provide as a lost-motion spring at least one rotary leg spring, which is expediently clamped on the axis between an arm of the outer lever and the inner lever. Preferably, two lost-motion springs are provided which extend within the arms of the outer lever. Alternatively, it is intended to other lost-motion springs such as helical compression springs or the like, which act between the levers. Due to the use of rotary torsion springs is a switchable drag lever, which in particular does not build high and has a compact design.

Der vorgeschlagene Schieber (Kolben) oberhalb der Komplementärfläche im Innenhebel als Koppelmittel lässt sich sehr einfach über aus dem Kopf des Abstützelements und einen kurzen Kanal heranleitbares Hydraulikmittel in wenigstens eine Richtung verlagern. In die andere Richtung kann eine Rückstellung über die Kraft eines mechanischen Federmittels wie einer Schraubendruck- oder Schraubenzugfeder erfolgen. Ggf. können auch andere Koppelmittel wie Schieberpakete, Kugeln, Keile etc. vorgesehen sein. Auch ist an eine alternative Beaufschlagung wie eine magnetische, elektromagnetische etc. gedacht.The proposed slide (piston) above the complementary surface in the inner lever as a coupling means can be very easily displaced in at least one direction by means of hydraulic medium which can be led out of the head of the support element and a short channel. In the other direction, a provision can be made via the force of a mechanical spring means such as a helical compression or helical tension spring. Possibly. Other coupling means such as slide packages, balls, wedges, etc. may be provided. Also, an alternative imposition such as a magnetic, electromagnetic, etc. is thought.

In Draufsicht bildet der Außenhebel ein Kasten- oder U-Profil und ist am einen Ende durch den Querbalken verbunden. Der Querbalken stabilisiert zum einen den Außenhebel, zum anderen dient er mit seiner Oberseite als hervorragende Anschlagfläche für das Koppelmittel.In plan view, the outer lever forms a box or U-profile and is connected at one end by the crossbar. The crossbeam stabilizes on the one hand the outer lever, on the other he serves with its top as an excellent stop surface for the coupling agent.

Zur Darstellung einer fluchtenden Zuordnung des Koppelmittels zu der Komplementärfläche an der Oberseite des Querbalkens ist ein Anschlag vorgesehen. Dieser kann entweder als von einer Stirnfläche des Innenhebels am anderen Ende ausgehender Ansatz ausgebildet sein, der mit einer Unterseite des Querbalkens kommuniziert. Alternativ können die Arme des Außenhebels im Bereich einer Quermittelebene des Schlepphebels durch einen Querbalken an der Unterseite verbunden sein, auf dem der Innenhebel mit einer Unterfläche anschlägt. Somit ist im Nockengrundkreis eine fluchtende Zuordnung des Koppelmittels zu seiner entsprechenden Gegenfläche geschaffen. Klar ist, dass in diesem Bereich auch ein geringes Koppelspiel vorgesehen sein muss. Dieses kann über Variation einer Höhe der Komplementärfläche am Querbalken oder der Höhe des mittig untergreifenden Querbalkens geschaffen werden. Ggf. können in diesen Bereichen geeignete Abstimmbeilagen aufgelegt werden.To illustrate an alignment of the coupling means to the complementary surface at the top of the crossbar a stop is provided. This can either be formed as an end of the inner lever at the other end outgoing approach that communicates with an underside of the crossbar. Alternatively, the arms of the outer lever can be connected in the region of a transverse center plane of the finger lever by a transverse bar on the underside, on which the inner lever abuts with a lower surface. Thus, in the cam base circle an aligned assignment of the coupling means is created to its corresponding counter surface. It is clear that in this area, a low coupling play must be provided. This can be created by varying a height of the complementary surface on the crossbar or the height of the cross-girder crosswise below. Possibly. appropriate voting enclosures may be set up in these areas.

Gemäß einer zweckmäßigen Fortbildung der Erfindung soll wenigstens eines der Hebel (Außen- oder Innenhebel) aus einem Leichtbauwerkstoff wie Blech bestehen. Dies wirkt sich günstig auf die Fertigungskosten und die Masse des Schlepphebels aus. Vorzugsweise soll der Schlepphebel, sofern er aus Blechwerkstoff besteht, mit seinen wesentlichen Bauteilen in einem Stanz- Biegeprozess in Massenfertigung dargestellt werden.According to an expedient development of the invention, at least one of the levers (outer or inner lever) should consist of a lightweight material such as sheet metal. This has a favorable effect on the manufacturing costs and the mass of the finger lever. Preferably, the rocker arm, if it consists of sheet material, to be represented with its essential components in a stamping bending process in mass production.

Der Bereich des Innenhebels mit der Komplementärfläche am anderen Ende kann zwischen den Seitenwänden des Innenhebels separat vorgesehen sein. Jedoch ist auch eine separate Anordnung hinter einer entsprechenden endseitigen Stirnfläche des Innenhebels vorgesehen. Alternativ hierzu kann der Bereich der Komplementärfläche mit der entsprechenden Aufnahme für das Koppelmittel auch eine einteilige Ausbildung mit dem Innenhebel erfahren.The region of the inner lever with the complementary surface at the other end may be provided separately between the side walls of the inner lever. However, a separate arrangement is provided behind a corresponding end-side end face of the inner lever. Alternatively, the region of the complementary surface with the corresponding receptacle for the coupling means can also experience a one-piece design with the inner lever.

In Konkretisierung der Erfindung ist als Anlauffläche im Innenhebel eine drehbare Rolle und sind als Anlaufflächen am Außenhebel Gleitflächen vorgesehen. Somit hat nur der Bereich, welcher statistisch bzw. empirisch gesehen den häufigsten Nockenkontakt hat, die aufwändigere Drehverbindung. Es kann jedoch auch zweckmäßig und vorgesehen sein, dass sämtliche Anlaufflächen mit drehbaren Rollen bzw. sämtliche Anlaufflächen lediglich mit Gleitflächen versehen sind oder dass die Anlaufflächen am Außenhebel drehbare Rollen sind und die Anlauffläche am Innenhebel durch eine Gleitfläche gebildet ist.In concretization of the invention as a contact surface in the inner lever a rotatable roller and are provided as contact surfaces on the outer lever sliding surfaces. Thus, only the area that statistically or empirically has the most frequent cam contact, the more complex rotary joint. However, it may also be expedient and provided that all contact surfaces are provided with rotatable rollers or all contact surfaces only with sliding surfaces or that the contact surfaces on the outer lever are rotatable rollers and the contact surface is formed on the inner lever by a sliding surface.

Kurze Beschreibung der ZeichnungShort description of the drawing

Die Erfindung ist zweckmäßigerweise anhand der Zeichnung näher erläutert. Es zeigen:

Figur 1
in einer räumlichen Ansicht den erfindungsgemäßen Schlepphebel und die
Figur 2
einen Schnitt entlang der Längsmittelebene des Schlepphebels.
The invention is suitably explained in more detail with reference to the drawing. Show it:
FIG. 1
in a three-dimensional view of the rocker arm and the invention
FIG. 2
a section along the longitudinal center plane of the finger lever.

Ausführliche Beschreibung der ZeichnungDetailed description of the drawing

Die Figuren offenbaren einen schaltbaren Schlepphebel 1 eines Ventiltriebs einer Brennkraftmaschine. Dieser besteht aus einem in Draufsicht U-ähnlichen, dünnwandigen Außenhebel 4, zwischen dessen Armen 2 ein balkenartiger Innenhebel 3 mit seinen Seitenwänden 19 aufgenommen ist. Die Hebel 3, 4 verlaufen auf einer gemeinsamen Achse 5 relativ verschwenkbeweglich zueinander. Die Achse 5 liegt im Bereich einer Quermittelebene des Schlepphebels 1.The figures disclose a switchable drag lever 1 of a valve train of an internal combustion engine. This consists of a U-like in plan view, thin-walled outer lever 4, between the arms 2, a bar-like inner lever 3 is received with its side walls 19. The levers 3, 4 extend on a common axis 5 relative to each other pivotally. The axis 5 is in the range of a transverse center plane of the finger lever. 1

Der Innenhebel 3 hat an einem Ende 8 an einer Unterseite 7 eine Anlage 9 für wenigstens ein Gaswechselventil. Am anderen Ende 10 hat der Innenhebel 3 an der Unterseite 7 eine Komplementärfläche 11 zur Lagerung auf einem Kopf eines Abstützelements. Gleichzeitig ist zu erkennen, dass oberhalb der Komplementärfläche 11 ein längs verlagerbarer Schieber als Koppelmittel 6 positioniert ist. Dieser kann über Hydraulikmittel in seine Koppelposition verlagert werden. Letzteres ist über einen direkten Kanal 27 aus dem Kopf des Abstützelements vor eine Innenstirn des Koppelmittels 6 leitbar. Für einen gewünschten Koppelfall wird das Koppelmittel 6 hydraulisch abschnittsweise aus dem Innenhebel 3 ausgefahren, wofür ein Querbalken 16 am anderen Ende 10, welcher die Arme 2 des Außenhebels 4 verbindet, an seiner Oberseite 18 eine Komplementärfläche 17 besitzt.The inner lever 3 has at one end 8 at a bottom 7 a system 9 for at least one gas exchange valve. At the other end 10, the inner lever 3 at the bottom 7 has a complementary surface 11 for mounting on a head of a support element. At the same time it can be seen that above the complementary surface 11 a longitudinally displaceable slider is positioned as a coupling means 6. This can be moved via hydraulic means in its coupling position. The latter can be conducted via a direct channel 27 from the head of the support element in front of an inner end of the coupling means 6. For a desired coupling case, the coupling means 6 is hydraulically extended in sections from the inner lever 3, for which a crossbar 16 at the other end 10, which connects the arms 2 of the outer lever 4, on its upper side 18 has a complementary surface 17.

Auf der Seite des einen Endes 8 hat der Außenhebel 4 nach der Achse 5 zwei Anlaufflächen 12 für respektive Großhubnocken. Diese sind hier als Gleitflächen ausgebildet. Der Innenhebel 3 besitzt in diesem Querbereich zwischen seinen Seitenwänden 19 eine drehbare und vorzugsweise wälzgelagerte Rolle, die als Anlauffläche 13 beispielsweise für einen Niedrighubnocken dient.On the side of the one end 8 of the outer lever 4 has after the axis 5 two contact surfaces 12 for respectively Großhubnocken. These are designed here as sliding surfaces. The inner lever 3 has in this transverse region between its side walls 19 a rotatable and preferably roller bearing roller, which serves as a contact surface 13, for example, for a low-lift cam.

Es ist zu erkennen, dass der Innenhebel 3 mit seinem Abschnitt, welcher die Anlage 9 am einen Ende 8 hat, über Stirnseiten 15 des Außenhebels 4 hinaussteht. Der Außenhebel 4 ist somit unmittelbar nach seinen Anlaufflächen 12 "abgekürzt". Offenbart ist zudem, dass der Innenhebel 3 im Bereich des einen Endes 8 durch einen Quersteg 20 verbunden ist, welcher an seiner Unterseite die vorgenannte Anlage 9 besitzt.It can be seen that the inner lever 3 with its section, which has the system 9 at one end 8, projects beyond end faces 15 of the outer lever 4. The outer lever 4 is thus "shortened" immediately after its contact surfaces 12. It is also disclosed that the inner lever 3 is connected in the region of one end 8 by a transverse web 20 which has the abovementioned abutment 9 on its underside.

Wie Figur 1 zeigt, ist die Achse 5 mit zwei Lost-Motion-Federn 14 versehen, die hier als Drehschenkelfedern ausgebildet sind. Diese Federn 14 verlaufen axial zwischen den Armen 2 des Außenhebels 4 und den Armen 19 des Innenhebels 3. Zur Schaffung des entsprechenden Bauraums sind die Arme 2 des Außenhebels 4 in diesem Bereich kastenartig ausgeformt.As FIG. 1 shows, the axis 5 is provided with two lost-motion springs 14, which are designed here as torsion torsion springs. These springs 14 extend axially between the arms 2 of the outer lever 4 and the arms 19 of the inner lever 3. To create the appropriate space, the arms 2 of the outer lever 4 are formed in this area box-like.

Um eine fluchtende Lagezuordnung des Innenhebels 3 zum Außenhebel 4 bei Nockengrundkreisdurchlauf zu garantieren, werden zwei Vorschläge gemacht. Entweder steht am anderen Ende 10 von einem unteren Abschnitt 22 des Innenhebels 3 ein Ansatz 24 ab. Auf diesem kann der Querbalken 16 des Außenhebels 4 mit seiner Unterseite 25 zur Anlage kommen.In order to guarantee an aligned position assignment of the inner lever 3 to the outer lever 4 at Nockengrundkreisdurchlauf, two proposals are made. Either is at the other end 10 of a lower portion 22 of the inner lever 3, a projection 24 from. On this, the cross bar 16 of the outer lever 4 come to rest with its bottom 25.

Alternativ hierzu kann ein Querbalken 26 benutzt werden, der die Arme 2 des Außenhebels 4 in etwa im Bereich einer Quermittelebene des Schlepphebels 1, den Innenhebel 3 untergreifend, verbindet. Hierzu kann der Innenhebel 3 mit einem geeigneten Bereich seiner Unterseite 7 in Anlage auf einer Oberseite des Querbalkens 26 kommen.Alternatively, a crossbar 26 may be used, which connects the arms 2 of the outer lever 4 approximately in the region of a transverse center plane of the finger lever 1, the inner lever 3 under cross-connects. For this purpose, the inner lever 3 come into contact with a suitable region of its underside 7 on an upper side of the crossbar 26.

Wie beschreibungseinleitend dargelegt, ist die Achse 5, in Längsrichtung des Schlepphebels 1 gesehen, zwischen der Komplementärfläche 11 für das Abstützelement und den Anlaufflächen 12, 13 für die Hubnocken angeordnet. Somit wurde diese Achse 5, bezogen auf den beschreibungseinleitend zitierten Stand der Technik, deutlich weiter in Richtung zur Hebelmitte verlagert. Sie liegt jetzt deutlich näher am Schwenkpunkt des gesamten Schlepphebels 1 (Komplementärfläche 11). Hierdurch ist eine Reduzierung des Massenträgheitsmoments des gesamten Schlepphebels 1 um diesen Schwenkpunkt erzielbar, was zu einer Erhöhung der maximalen Drehzahl im gekoppelten Zustand des Schlepphebels 1 führen kann. Gleichzeitig ist auch im entkoppelten Zustand das Massenträgheitsmoment des Außenhebels 4 um die Achse 5 reduziert. Auch erfährt der Außenhebel 4 im Koppelzustand bei Nockenbeaufschlagung nicht mehr die relativ hohe Durchbiegung wie im beschreibungseinleitend zitierten Stand der Technik. Somit kann der Außenhebel 4 ggf. schwächer dimensioniert werden.As described in the introduction, the axis 5, viewed in the longitudinal direction of the finger lever 1, between the complementary surface 11 for the support element and the contact surfaces 12, 13 arranged for the lifting cams. Thus, this axis 5, based on the introductory cited prior art, significantly shifted towards the center of the lever. It is now much closer to the pivot point of the entire finger lever 1 (complementary surface 11). As a result, a reduction in the mass moment of inertia of the entire finger lever 1 can be achieved around this pivot point, which can lead to an increase in the maximum speed in the coupled state of the finger lever 1. At the same time, the mass moment of inertia of the outer lever 4 is reduced about the axis 5 in the decoupled state. Also, the outer lever 4 no longer experiences the relatively high deflection in the coupling state when cam is applied as in the cited prior art. Thus, the outer lever 4 may be dimensioned weaker.

Liste der BezugszahlenList of reference numbers

  1. 1) Schlepphebel1) drag lever
  2. 2) Arm2) arm
  3. 3) Innenhebel3) Inner lever
  4. 4) Außenhebel4) outside lever
  5. 5) Achse5) axis
  6. 6) Koppelmittel6) Coupling agent
  7. 7) Unterseite7) bottom
  8. 8) Ende8) End
  9. 9) Anlage9) attachment
  10. 10) Ende10) End
  11. 11) Komplementärfläche11) Complementary surface
  12. 12) Anlauffläche12) contact surface
  13. 13) Anlauffläche13) contact surface
  14. 14) Lost-Motion-Feder14) Lost motion spring
  15. 15) Stirnseite15) front side
  16. 16) Querbalken16) Crossbeams
  17. 17) Komplementärfläche17) Complementary surface
  18. 18) Oberseite18) top
  19. 19) Seitenwand19) side wall
  20. 20) Quersteg20) crosspiece
  21. 21) Abschnitt21) section
  22. 22) Abschnitt22) section
  23. 23) Stirnfläche23) face
  24. 24) Ansatz24) Approach
  25. 25) Unterseite25) bottom
  26. 26) Querbalken26) Crossbeams
  27. 27) Kanal27) channel

Claims (9)

  1. Adjustable valve rocker lever (1) of a valve timing gear of an internal combustion engine, having an inner lever (3) and an outer lever (4) enclosing the former with its arms (2), the levers (3, 4) running on a common axis (5) so that they can swivel relative to one another and being connectable to one another by way of coupling links (6) in such a way that a large valve lift is generated when coupled and a small or zero valve lift is generated when decoupled, the inner lever (3) on an underside (7) at one end (8) having a seating face (9) for an exhaust and refill valve and at the other end (10) a complementary face (11) for a support element, and the outer lever (4) on each arm having a lifting face (12) for a main lift cam and the inner lever (3) having a lifting face (13) for a low or zero-lift cam, a lost-motion spring (14) being provided between the levers (3, 4), the arms (2) of the outer lever (4) at one end (8) terminating in end faces (15) directly after their lifting faces (12), the inner lever (3), at least with an area of its seating face (9) for the exhaust and refill valve, protruding lengthwise beyond the end faces (15) of arms (2) of the outer lever (4), characterized in that the axis (5), viewed from the other end (10) in the longitudinal direction of the valve rocker lever (1), is arranged behind the complementary face (11) for the support element and in front of the lifting faces (12, 13) for the lifting cams.
  2. Valve rocker lever according to Claim 1, characterized in that at least one torsion spring or a set of torsion springs is provided as lost-motion spring (14), which is/are clamped on the axis (5) between an arm (2) of the outer lever (4) and the inner lever (3).
  3. Valve rocker lever according to Claim 1, characterized in that in the inner lever (3), in the area above its complementary face (11) for the support element, a slide displaceable in the longitudinal direction of the valve rocker lever (1) is applied as coupling link (6), the arms (2) of the outer lever (4) at the other end (10) being connected by a strap-like cross member (16) and the coupling link (6) in the event of coupling being displaceable in sections on a complementary face (17) on an upper side (18) of the cross member (16).
  4. Valve rocker lever according to Claim 3, characterized in that the inner lever (3) comprises two essentially upright and thin-walled side walls (19), which at least in the area of one end (8) are connected by a cross web (20) to the seating face (9) for the exhaust and refill valve, the coupling link (6) running either in a separate insert between or at the face behind the side walls (19) or in a section (21) integrally formed with the side walls (19).
  5. Valve rocker lever according to Claim 3, characterized in that from a lower section (22) of an end face (23) of the inner lever (3) at the other end (10) a shoulder (24) protrudes, on which in a base circle phase of the cams the cross member (16) strikes with its underside (25) for alignment of the coupling link (6) with the complementary face (17) on the upper side (18) of the cross member (16).
  6. Valve rocker lever according to Claim 3, characterized in that on the underside (7) and in the longitudinal section of the lifting faces (12, 13) the arms (2) of the outer lever (4) are undercut by a cross member (26), on which, in a base circle phase of the cams, the inner lever (3) strikes with an underside for alignment of the coupling link (6) with the complementary face (17) on the upper side (18) of the cross member (16).
  7. Valve rocker lever according to Claim 1, characterized in that at least one of the components, either the inner lever (3) or the outer lever (4), is composed of a thin-walled, lightweight material such as sheet metal.
  8. Valve rocker lever according to Claim 1, characterized in that a rotatable roller is provided as lifting face (13) in the inner lever (3) and slide faces are provided as lifting faces (12) on the outer lever (4).
  9. Valve rocker lever according to Claim 1 or 3, characterized in that the coupling link (6) is displaceable in at least one moving direction by hydraulic fluid, which can be conducted via a duct (27) breaching the complementary face (11) in the inner lever (3).
EP06122627A 2005-11-10 2006-10-20 Switchable rocker arm of a valve train of an internal combustion engine Not-in-force EP1785595B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005053596A DE102005053596A1 (en) 2005-11-10 2005-11-10 Switchable drag lever of a valve train of an internal combustion engine

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EP1785595A1 EP1785595A1 (en) 2007-05-16
EP1785595B1 true EP1785595B1 (en) 2008-06-25

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US (1) US7377247B2 (en)
EP (1) EP1785595B1 (en)
KR (1) KR20070050368A (en)
DE (2) DE102005053596A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9790823B2 (en) 2010-03-19 2017-10-17 Eaton Corporation Switching rocker arm

Families Citing this family (51)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004051422A1 (en) * 2004-10-22 2006-05-24 Schaeffler Kg Switchable drag lever
KR100867842B1 (en) * 2006-10-10 2008-11-10 현대자동차주식회사 Various valve lift follower for vehicle
DE102007029465A1 (en) * 2007-06-26 2009-01-08 Schaeffler Kg Switchable drag lever of a valve train of an internal combustion engine
US7761217B2 (en) * 2008-03-04 2010-07-20 Delphi Technologies, Inc. Diagnostics for two-mode variable valve activation devices
US9284859B2 (en) 2010-03-19 2016-03-15 Eaton Corporation Systems, methods, and devices for valve stem position sensing
US9938865B2 (en) 2008-07-22 2018-04-10 Eaton Corporation Development of a switching roller finger follower for cylinder deactivation in internal combustion engines
US8985074B2 (en) 2010-03-19 2015-03-24 Eaton Corporation Sensing and control of a variable valve actuation system
US9708942B2 (en) 2010-03-19 2017-07-18 Eaton Corporation Rocker arm assembly and components therefor
US9581058B2 (en) 2010-08-13 2017-02-28 Eaton Corporation Development of a switching roller finger follower for cylinder deactivation in internal combustion engines
US20190309663A9 (en) 2008-07-22 2019-10-10 Eaton Corporation Development of a switching roller finger follower for cylinder deactivation in internal combustion engines
US10415439B2 (en) 2008-07-22 2019-09-17 Eaton Intelligent Power Limited Development of a switching roller finger follower for cylinder deactivation in internal combustion engines
US9016252B2 (en) 2008-07-22 2015-04-28 Eaton Corporation System to diagnose variable valve actuation malfunctions by monitoring fluid pressure in a hydraulic lash adjuster gallery
US9038586B2 (en) 2010-03-19 2015-05-26 Eaton Corporation Rocker assembly having improved durability
US9291075B2 (en) 2008-07-22 2016-03-22 Eaton Corporation System to diagnose variable valve actuation malfunctions by monitoring fluid pressure in a control gallery
US9228454B2 (en) 2010-03-19 2016-01-05 Eaton Coporation Systems, methods and devices for rocker arm position sensing
DE102010011420A1 (en) * 2009-03-19 2010-09-30 Schaeffler Technologies Gmbh & Co. Kg Switchable drag lever of a valve train of an internal combustion engine
DE102009019680A1 (en) * 2009-04-30 2010-11-11 Schaeffler Technologies Gmbh & Co. Kg Valve train system
DE102010015719A1 (en) * 2009-06-01 2010-12-30 Schaeffler Technologies Gmbh & Co. Kg Switchable drag lever for a valve train of an internal combustion engine
US11181013B2 (en) 2009-07-22 2021-11-23 Eaton Intelligent Power Limited Cylinder head arrangement for variable valve actuation rocker arm assemblies
US10087790B2 (en) 2009-07-22 2018-10-02 Eaton Corporation Cylinder head arrangement for variable valve actuation rocker arm assemblies
US9194261B2 (en) 2011-03-18 2015-11-24 Eaton Corporation Custom VVA rocker arms for left hand and right hand orientations
JP2011208631A (en) * 2010-03-12 2011-10-20 Nsk Ltd Tappet roller bearing
US9874122B2 (en) 2010-03-19 2018-01-23 Eaton Corporation Rocker assembly having improved durability
US9885258B2 (en) 2010-03-19 2018-02-06 Eaton Corporation Latch interface for a valve actuating device
JP5668953B2 (en) * 2010-03-19 2015-02-12 イートン コーポレーションＥａｔｏｎ Ｃｏｒｐｏｒａｔｉｏｎ Switchable rocker arm
KR101145638B1 (en) * 2010-05-06 2012-07-11 현대자동차주식회사 Variable valve lift apparatus
KR101209737B1 (en) * 2010-10-22 2012-12-07 현대자동차주식회사 Variable valve lift system
WO2012103401A2 (en) * 2011-01-27 2012-08-02 Scuderi Group, Llc Lost-motion variable valve actuation system with cam phaser
EP2668377A1 (en) 2011-01-27 2013-12-04 Scuderi Group, Inc. Lost-motion variable valve actuation system with valve deactivation
DE102011003900A1 (en) * 2011-02-10 2012-08-16 Schaeffler Technologies Gmbh & Co. Kg intermediate lever
JP2015506436A (en) 2012-01-06 2015-03-02 スクデリ グループ インコーポレイテッド Lost motion variable valve actuation system
DE102012204367A1 (en) 2012-03-20 2013-09-26 Man Diesel & Turbo Se Switchable rocker arm
EP2653673A1 (en) 2012-04-19 2013-10-23 Eaton S.r.l. A switchable rocker arm
USD750670S1 (en) 2013-02-22 2016-03-01 Eaton Corporation Rocker arm
EP2961947B1 (en) * 2013-03-01 2019-05-01 Eaton Corporation Latch interface for a valve actuating device
WO2014151845A1 (en) 2013-03-15 2014-09-25 Scuderi Group, Inc. Split-cycle engines with direct injection
DE112015000034T5 (en) 2014-03-03 2015-11-19 Eaton Corporation Valve operating device and method for its production
KR20160057761A (en) * 2014-11-14 2016-05-24 현대자동차주식회사 Variable valve lift appratus
US9816409B2 (en) 2014-12-09 2017-11-14 Hyundai Motor Company Variable valve lift apparatus
CN104696037A (en) * 2015-03-18 2015-06-10 杭州新坐标科技股份有限公司 Low inertia high strength roller rocker
USD791190S1 (en) 2015-07-13 2017-07-04 Eaton Corporation Rocker arm assembly
USD833482S1 (en) 2015-07-13 2018-11-13 Eaton Corporation Rocker arm
EP3332101A4 (en) 2015-08-05 2019-09-25 Eaton Intelligent Power Limited Switching rocker arm for internal exhaust gas recirculation
USD830414S1 (en) 2015-12-10 2018-10-09 Eaton S.R.L. Roller rocker arm of an engine
US10006322B2 (en) 2016-04-26 2018-06-26 Hyundai Motor Company Variable valve lift apparatus
KR101855770B1 (en) 2016-08-17 2018-05-09 현대자동차 주식회사 Varible vavle duration apparatus
WO2018068041A1 (en) 2016-10-07 2018-04-12 Eaton Corporation Three roller rocker arm with cantilevered rollers and lost motion spring over valve or over rocker arm pivot
DE102017204877A1 (en) 2017-03-23 2018-09-27 Bayerische Motoren Werke Aktiengesellschaft Valve drive for an internal combustion engine and cylinder head
DE102017112468B3 (en) 2017-06-07 2018-07-19 Schaeffler Technologies AG & Co. KG Hydraulic support element
CN216142793U (en) 2018-02-23 2022-03-29 伊顿智能动力有限公司 Switching roller finger follower
US10502102B1 (en) * 2018-07-10 2019-12-10 Schaeffler Technologies AG & Co. KG Actuation arrangement for a switchable lever

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2753197A1 (en) * 1976-12-15 1978-06-22 Eaton Corp VALVE CONTROL DEVICE
DE10137490A1 (en) * 2001-07-31 2003-02-13 Ina Schaeffler Kg Valve control device for internal combustion engine has a multi-part drag lever with primary lever and a secondary lever on each side of same and actuated by second cam
DE10155825A1 (en) * 2001-11-14 2003-05-22 Ina Schaeffler Kg Rocker arm used in a valve gear of an internal combustion engine comprises an outer lever having an inner lever positioned between its arms which pivot relative to each other
US6668779B2 (en) * 2002-05-08 2003-12-30 Delphi Technologies, Inc. Two-step finger follower rocker arm assembly
DE10257705A1 (en) * 2002-12-11 2004-06-24 Ina-Schaeffler Kg Valve lever for valve train of internal combustion engine has outer lever enclosing inner lever with arms and swiveled away from it when decoupled
DE10310226A1 (en) * 2003-03-08 2004-09-16 Ina-Schaeffler Kg Drag lever of a valve train of an internal combustion engine
DE10316189A1 (en) * 2003-04-09 2004-10-28 Ina-Schaeffler Kg Tow lever for a combustion engine valve drive has outer and inner levers connected through an axle across the inner lever
DE10347329A1 (en) * 2003-10-11 2005-05-04 Ina Schaeffler Kg Operating lever for a combustion engine valve drive has coupled inner and outer levers and can be changed for different lift actions for at least one gas exchange valve
ATE435359T1 (en) * 2004-02-25 2009-07-15 Delphi Tech Inc HYDRAULIC VALVE CLEARANCE COMPENSATOR
US7546822B2 (en) * 2004-03-03 2009-06-16 Timken Us Corporation Switching finger follower assembly
DE102005048984A1 (en) * 2005-10-13 2007-04-19 Schaeffler Kg Switchable drag lever

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9790823B2 (en) 2010-03-19 2017-10-17 Eaton Corporation Switching rocker arm

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KR20070050368A (en) 2007-05-15
US20070101958A1 (en) 2007-05-10
EP1785595A1 (en) 2007-05-16
DE102005053596A1 (en) 2007-05-16
US7377247B2 (en) 2008-05-27
DE502006000981D1 (en) 2008-08-07

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