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EP0889205B1 - Rocker arrangement for valve drive in an internal combustion engine - Google Patents

Rocker arrangement for valve drive in an internal combustion engine Download PDF

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Publication number
EP0889205B1
EP0889205B1 EP98111276A EP98111276A EP0889205B1 EP 0889205 B1 EP0889205 B1 EP 0889205B1 EP 98111276 A EP98111276 A EP 98111276A EP 98111276 A EP98111276 A EP 98111276A EP 0889205 B1 EP0889205 B1 EP 0889205B1
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EP
European Patent Office
Prior art keywords
shaft
axis
rocker
hub
rocker arm
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.)
Expired - Lifetime
Application number
EP98111276A
Other languages
German (de)
French (fr)
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EP0889205A1 (en
Inventor
Paul Dipl.-Ing. Breidenbach
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.)
GM Deutschland Holdings GmbH
Original Assignee
Adam Opel GmbH
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Filing date
Publication date
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Publication of EP0889205A1 publication Critical patent/EP0889205A1/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases
    • F02F7/0043—Arrangements of mechanical drive elements
    • F02F7/0046—Shape of casings adapted to facilitate fitting or dismantling of engine parts
    • 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
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • F01L1/053—Camshafts overhead type
    • 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
    • F01L2810/00—Arrangements solving specific problems in relation with valve gears
    • F01L2810/02—Lubrication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder

Definitions

  • the invention relates to an arrangement of rocker arms or Rocker arms for valve control of internal combustion engines according to the preamble of claim 1.
  • rocker arms shows, for example DE 35 03 313.
  • rocker arms can outside of the cylinder head with the continuous Axle pre-assembled and then together with this Bearing blocks are attached to the cylinder head.
  • the cylinder head is a has continuous bearing bore for the axis in which the axis from one end of the cylinder head is inserted, the rocker arms gradually for thread each cylinder onto the axle.
  • rocker arm or rocker arm in the cylinder head of internal combustion engines to be stored individually. So is z. B. according to DE 42 34 868 a rocker arm on it Bearing side only with a ball socket on an inside Cylinder head housing held ball pin. An active connection between several rocker arms within a cylinder head is in such a design hardly feasible.
  • Such individual bearings can be the assembly effort reduce the valve timing. But then you are not advantageously applicable if several rocker arms or Rocker arms are provided for the purpose of valve shutdown pressurized oil is applied via a common axis should be.
  • the invention has for its object an arrangement of rocker arms or rocker arms for valve control to create in the cylinder head of internal combustion engines that a single installation or removal of each rocker arm or Rocker arm without affecting the other rocker arm
  • the rocker arm permits and thus a rational assembly enables and with which all rocker arms or Rocker arms are held on a common axis and can be supplied with oil through them.
  • the common axis is a row of rocker arms or rocker arms in the cylinder head of the internal combustion engine stored so that they are in the bearing bore is rotatable, but in a predetermined position opposite a twisting movement can be determined. It is the functional axis aligned so that its cylindrical Side in the direction of force application the hub body of the rocker arm or rocker arm aligned is.
  • cylindrical bearing surface of the hub body to the cylindrical surface of the axis is adapted, can between the cylindrical surfaces of the axle and the hub body form a load-bearing oil film in the usual way. alternative this can also be limited to the cylindrical bearing surfaces, a rolling bearing may be provided, such as this z. B. without flattening of the axis also with DE 35 03 313 is proposed.
  • the hub bodies of rocker arms or rocker arms are on theirs the side facing away from the operating force with a hub opening through which a sector of is cut out of the hub circumference by less than 180 °.
  • a Hub opening created by this recess impaired the bearing behavior of the hub body not because due to the forces from the valve train work in one direction.
  • a cylinder head 1 of an internal combustion engine forms together with a piston, not shown, a combustion chamber 2, which is followed by an intake duct 3 and an exhaust duct 4.
  • the intake duct 3 is through an inlet valve 5, and the outlet channel 4 can be closed by an outlet channel 6.
  • the invention is based on the example below of the inlet valve 5 and its valve actuation parts shown.
  • the inlet valve 5 is in its by the valve spring 7 Closed position held as shown.
  • a rocker arm 8 lies with its end 9, in which there is a hydraulic Valve clearance compensation element 10 is located on the upper end of the shaft 11 of the inlet valve 5.
  • the Rocker arm 8 has a hub body 12, which is is supported on an axle 13 mounted in the cylinder head 1. Between the hub body 12 and the end 9 of the rocker arm 8, a roller 14 is rotatably arranged on the rocker arm 8, on which a cam 15 on the cylinder head 1 mounted camshaft 16 acts and so the inlet valve 5 can open.
  • the axis 13 has a running along its central axis Bore 17 on, of the channels 18 to be connected radially Oil channels 19 in the body of the rocker arm 8 for supplying the valve clearance compensation elements 10 to lead.
  • the axis 13 is parallel to the central axis with a Provide flattening 20.
  • the flattening 20 is in the Cross section of the axis 13 through an angle of approximately 120 ° limited.
  • the hub body 12 of the rocker arm 8 has a hub opening 21, which has a sector of approximately 120 ° of the hub circumference spares.
  • the axis 13 is in its bearing bore in the cylinder head 1 set so that its remaining cylindrical surface part with the remaining cylindrical surface of the hub body 12 is in contact.
  • the so overlapping cylindrical surfaces transmit the operating forces between the rocker arm 8 and the axle 13. Between a load-bearing lubricating film can form on them. Between that originating from the bore 17 of the axis 13 Channel 18 and the oil channel 19 in the rocker arm 8 is there is a uniform oil pressure, one Leakage between the cylindrical surfaces remains low and is irrelevant to motor operation.
  • the axis 13 in its bearing bore be rotated by about 90 ° so that they face each other the rocker arm 8 assumes a position as shown in FIG. 2 is shown.
  • the measure between the two outer boundaries 22 of the hub opening 21 is small Amount greater than the dimension between the flattening 20 and the opposite outer circumference on the axis 13. The hub opening 21 can thus be from the functional position twisted axis 13 placed over or be removed.
  • the invention is not restricted to the exemplary embodiment, but in the same way for the arrangement of a Rocker arm applicable.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

The valve lifters are born on a continuous shaft via hub bodies. The shaft (13) has a circular profile with a flat section (20). The hub bodies (12) have an opening on the side away from the operational contact force. The residual circumferential bearing angle of the hub bodies, and the residual circumferential angle of the shaft cross section are larger than 180 degrees . The shaft is turnable and lockable in its bearing. The shaft has one or more axis-parallel bores (17), and channels (18) branching radially off the bores to the hub bodies, for the supply of oil.

Description

Die Erfindung betrifft eine Anordnung von Kipphebeln oder Schlepphebeln für die Ventilsteuerung von Brennkraftmaschinen gemäß dem Oberbegriff des Patentanspruches 1.The invention relates to an arrangement of rocker arms or Rocker arms for valve control of internal combustion engines according to the preamble of claim 1.

Eine derartige Anordnung für Kipphebel zeigt beispielsweise DE 35 03 313. Bei der Montage können solche Kipphebel außerhalb des Zylinderkopfes mit der durchgehenden Achse vormontiert und dann mit dieser gemeinsam mittels Lagerböcken im Zylinderkopf befestigt werden. Eine andere Möglichkeit besteht darin, daß der Zylinderkopf eine durchgängige Lagerbohrung für die Achse aufweist, in welche die Achse von einer Stirnseite des Zylinderkopfes her eingesteckt wird, wobei die Kipphebel nach und nach für jeden Zylinder auf die Achse aufgefädelt werden.Such an arrangement for rocker arms shows, for example DE 35 03 313. During assembly, such rocker arms can outside of the cylinder head with the continuous Axle pre-assembled and then together with this Bearing blocks are attached to the cylinder head. Another Possibility is that the cylinder head is a has continuous bearing bore for the axis in which the axis from one end of the cylinder head is inserted, the rocker arms gradually for thread each cylinder onto the axle.

In beiden Fällen kann eine den Betriebsbedingungen angemessene Lagerung der Kipphebel erzielt werden, wobei die Achse auch eine oder mehrere zentrale Bohrungen zur Führung von Öl an die einzelnen Kipphebel aufweisen kann. Nachteilig ist bei einer solchen Ausführung der hohe Montageaufwand, da jeder Kipp- oder Schlepphebel einzeln auf die Achse in der richtigen Reihenfolge aufgefädelt werden muß, um dann gemeinsam mit ihr im Zylinderkopf montiert zu werden. In both cases, one can be appropriate to the operating conditions Storage of the rocker arm can be achieved, the Axis also one or more central holes for guidance of oil to the individual rocker arms. The disadvantage of such a design is the high assembly effort, because each rocker arm or finger lever opens individually the axis must be threaded in the correct order must then be mounted together with her in the cylinder head to become.

Es ist auch bekannt, Kipphebel oder Schlepphebel im Zylinderkopf von Brennkraftmaschinen einzeln zu lagern. So ist z. B. gemäß DE 42 34 868 ein Schlepphebel an seiner Lagerseite lediglich mit einer Kugelpfanne auf einem im Zylinderkopfgehäuse gehaltenen Kugelbolzen aufgesetzt. Eine Wirkverbindung zwischen mehreren Schlepphebeln innerhalb eines Zylinderkopfes ist bei einer solchen Ausführung kaum ausführbar.It is also known rocker arm or rocker arm in the cylinder head of internal combustion engines to be stored individually. So is z. B. according to DE 42 34 868 a rocker arm on it Bearing side only with a ball socket on an inside Cylinder head housing held ball pin. An active connection between several rocker arms within a cylinder head is in such a design hardly feasible.

Ähnlich verhält es sich z. B. bei den Kipphebeln nach DE 12 29 334, bei denen die Kipphebelachse von einem Gleitstein gebildet ist, der mit einem im Zylinderkopfgehäuse verankerten Bolzen gehalten ist.It is similar z. B. with the rocker arms according to DE 12 29 334, in which the rocker arm axis of a sliding block is formed with one in the cylinder head housing anchored bolt is held.

Derartige einzelne Lagerungen können den Montageaufwand der Ventilsteuerung reduzieren. Sie sind jedoch dann nicht vorteilhaft anwendbar, wenn mehrere Kipphebel oder Schlepphebel vorgesehen sind, die zum Zweck einer Ventilabschaltung über eine gemeinsame Achse mit Drucköl beaufschlagt werden sollen.Such individual bearings can be the assembly effort reduce the valve timing. But then you are not advantageously applicable if several rocker arms or Rocker arms are provided for the purpose of valve shutdown pressurized oil is applied via a common axis should be.

Der Erfindung liegt die Aufgabe zugrunde, eine Anordnung von Kipphebeln oder Schlepphebeln für die Ventilsteuerung im Zylinderkopf von Brennkraftmaschinen zu schaffen, die einen einzelnen Ein- oder Ausbau jedes Kipphebels oder Schlepphebels ohne Beeinträchtigung der übrigen Kippoder Schlepphebel zuläßt und so eine rationelle Montage ermöglicht und bei der trotzdem alle Kipphebel oder Schlepphebel auf einer gemeinsamen Achse gehalten sind und durch diese mit Öl versorgt werden können.The invention has for its object an arrangement of rocker arms or rocker arms for valve control to create in the cylinder head of internal combustion engines that a single installation or removal of each rocker arm or Rocker arm without affecting the other rocker arm The rocker arm permits and thus a rational assembly enables and with which all rocker arms or Rocker arms are held on a common axis and can be supplied with oil through them.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Patentanspruches 1 gelöst.This object is achieved by the features of Claim 1 solved.

Vorteilhafte Weiterbildungen der Erfindung sind Gegenstand der Unteransprüche. Advantageous developments of the invention are the subject of subclaims.

Gemäß der Erfindung ist die gemeinsame Achse einer Reihe von Kipp- oder Schlepphebeln im Zylinderkopf der Brennkraftmaschine so gelagert, daß sie in der Lagerbohrung verdrehbar ist, jedoch in einer vorgegebenen Stellung gegenüber einer Verdrehbewegung festlegbar ist. Dabei ist in Funktionslage die Achse so ausgerichtet, daß ihre zylindrische Seite in Richtung zur Krafteinleitung durch die Nabenkörper der Kipp- bzw. Schlepphebel ausgerichtet ist.According to the invention, the common axis is a row of rocker arms or rocker arms in the cylinder head of the internal combustion engine stored so that they are in the bearing bore is rotatable, but in a predetermined position opposite a twisting movement can be determined. It is the functional axis aligned so that its cylindrical Side in the direction of force application the hub body of the rocker arm or rocker arm aligned is.

Da die zylindrische Lagerfläche der Nabenkörper an die zylindrische Fläche der Achse angepaßt ist, kann sich zwischen den zylindrischen Flächen von Achse und Nabenkörper in üblicher Weise ein tragender Ölfilm bilden. Alternativ dazu kann auch, begrenzt auf die zylindrischen tragenden Flächen, eine Wälzlagerung vorgesehen sein, wie dies z. B. ohne eine Abplattung der Achse auch mit DE 35 03 313 vorgeschlagen ist.Since the cylindrical bearing surface of the hub body to the cylindrical surface of the axis is adapted, can between the cylindrical surfaces of the axle and the hub body form a load-bearing oil film in the usual way. alternative this can also be limited to the cylindrical bearing surfaces, a rolling bearing may be provided, such as this z. B. without flattening of the axis also with DE 35 03 313 is proposed.

Die Nabenkörper von Kipp- bzw. Schlepphebeln sind an ihren der Betriebsauflagekraft abgewandten Seite jeweils mit einer Nabenöffnung versehen, durch den ein Sektor von weniger als 180° aus dem Nabenumfang ausgespart ist. Eine durch diese Aussparung entstandene Nabenöffnung beeinträchtigt das Lagerverhalten des Nabenkörpers nicht, da durch die vom Ventiltrieb herrührenden Kräfte immer nur in einer Richtung wirken.The hub bodies of rocker arms or rocker arms are on theirs the side facing away from the operating force with a hub opening through which a sector of is cut out of the hub circumference by less than 180 °. A Hub opening created by this recess impaired the bearing behavior of the hub body not because due to the forces from the valve train work in one direction.

Die Abplattung entlang einer Längsseite der Achse in Verbindung mit der Nabenöffnung im Nabenkörper ermöglicht ein Zusammenfügen von im Zylinderkopf eingesetzter Achse und jedem einzelnen Kipp- bzw. Schlepphebel. Dazu ist die Achse in ihrer Lagerbohrung so zu verdrehen, daß die Ebene der Abplattung etwa in Richtung der Montagebewegung liegt. Bei dieser Position kann jeder der Nabenkörper mit der Nabenöffnung radial über die Achse gesteckt werden. Nach einem Verdrehen der Achse um ca. 90° in ihrer Lagerbohrung in eine Richtung, daß die zylindrischen Flächen von Achse und Nabenkörper aneinanderliegen, besteht zwischen Achse und Kipp- bzw. Schlepphebel Formschluß.The flattening along a long side of the axis in connection with the hub opening in the hub body a joining of the axis inserted in the cylinder head and every single rocker arm or rocker arm. This is the To turn the axis in its bearing bore so that the plane the flattening approximately in the direction of the assembly movement lies. In this position, each of the hub bodies can be used the hub opening are inserted radially over the axis. After turning the axis by approx. 90 ° in its bearing bore in one direction that the cylindrical surfaces of axle and hub body lie against each other, exists between Axle and rocker arm or rocker arm positive locking.

Durch Bohrungen entlang dem Zentrum der Achse sowie durch radiale Kanäle von diesen Bohrungen zur tragenden zylindrischen Fläche der Achse und durch anschließende Ölkanäle in den Kipp- bzw. Schlepphebeln kann von der Stirnseite der Achse an alle auf dieser Achse gelagerten Kippbzw. Schlepphebel Öl unter einem definierten Druck zu Ventilspielausgleichselementen oder Ventilabschalteinrichtungen geleitet werden, und zwar in gleicher Weise, wie dies bei aufgefädelten Kipp- oder Schlepphebeln auch der Fall ist.Through holes along the center of the axis as well as through radial channels from these holes to the bearing cylindrical Surface of the axis and through subsequent oil channels in the rocker arms or rocker arms can be from the front the axis to all tipping or. Rocker arm oil under a defined pressure Valve clearance compensation elements or valve shutdown devices are managed in the same way, like this with threaded rocker arms or finger levers the case is.

Ein Ausführungsbeispiel der Erfindung ist nachstehend anhand von Zeichnungen näher beschrieben. Es zeigen

Fig. 1:
die Anordnung eines Schlepphebels innerhalb eines Ventiltriebs einer Brennkraftmaschine im Schnitt;
Fig. 2:
den Schlepphebel nach Figur 1 in Verbindung mit seiner Achse während der Montage.
An embodiment of the invention is described below with reference to drawings. Show it
Fig. 1:
the arrangement of a rocker arm within a valve train of an internal combustion engine in section;
Fig. 2:
the rocker arm according to Figure 1 in connection with its axis during assembly.

Ein Zylinderkopf 1 einer Brennkraftmaschine bildet zusammen mit einem nicht dargestellten Kolben einen Brennraum 2, dem sich ein Ansaugkanal 3 und ein Auslaßkanal 4 anschließt. Der Ansaugkanal 3 ist durch ein Einlaßventil 5, und der Auslaßkanal 4 ist durch ein Auslaßkanal 6 verschließbar. Die Erfindung ist im folgenden am Beispiel des Einlaßventiles 5 und seiner Ventilbetätigungsteile dargestellt.A cylinder head 1 of an internal combustion engine forms together with a piston, not shown, a combustion chamber 2, which is followed by an intake duct 3 and an exhaust duct 4. The intake duct 3 is through an inlet valve 5, and the outlet channel 4 can be closed by an outlet channel 6. The invention is based on the example below of the inlet valve 5 and its valve actuation parts shown.

Das Einlaßventil 5 wird durch die Ventilfeder 7 in seiner Schließstellung wie dargestellt gehalten. Ein Schlepphebel 8 liegt mit seinem Ende 9, in dem sich ein hydraulisches Ventilspielausgleichselement 10 befindet, auf dem oberen Ende des Schaftes 11 des Einlaßventiles 5 auf. Der Schlepphebel 8 weist einen Nabenkörper 12 auf, der sich auf einer im Zylinderkopf 1 gelagerten Achse 13 abstützt. Zwischen dem Nabenkörper 12 und dem Ende 9 des Schlepphebels 8 ist am Schlepphebel 8 eine Rolle 14 drehbar angeordnet, auf welche ein Nocken 15 einer am Zylinderkopf 1 gelagerten Nockenwelle 16 einwirkt und so das Einlaßventil 5 öffnen kann.The inlet valve 5 is in its by the valve spring 7 Closed position held as shown. A rocker arm 8 lies with its end 9, in which there is a hydraulic Valve clearance compensation element 10 is located on the upper end of the shaft 11 of the inlet valve 5. The Rocker arm 8 has a hub body 12, which is is supported on an axle 13 mounted in the cylinder head 1. Between the hub body 12 and the end 9 of the rocker arm 8, a roller 14 is rotatably arranged on the rocker arm 8, on which a cam 15 on the cylinder head 1 mounted camshaft 16 acts and so the inlet valve 5 can open.

Die Achse 13 weist eine entlang ihrer Mittelachse verlaufende Bohrung 17 auf, von der Kanäle 18 radial zu anschließenden Ölkanälen 19 in den Körpern der Schlepphebel 8 zur Versorgung der Ventilspielausgleichselemente 10 führen. Die Achse 13 ist parallel zur Mittelachse mit einer Abplattung 20 versehen. Die Abplattung 20 ist im Querschnitt der Achse 13 durch einen Winkel von etwa 120° begrenzt.The axis 13 has a running along its central axis Bore 17 on, of the channels 18 to be connected radially Oil channels 19 in the body of the rocker arm 8 for supplying the valve clearance compensation elements 10 to lead. The axis 13 is parallel to the central axis with a Provide flattening 20. The flattening 20 is in the Cross section of the axis 13 through an angle of approximately 120 ° limited.

Der Nabenkörper 12 des Schlepphebels 8 hat eine Nabenöffnung 21, die einen Sektor von annähernd 120° des Nabenumfanges ausspart.The hub body 12 of the rocker arm 8 has a hub opening 21, which has a sector of approximately 120 ° of the hub circumference spares.

Die Achse 13 ist in ihrer Lagerbohrung im Zylinderkopf 1 so festgelegt, daß ihr verbleibender zylindrischer Oberflächenteil mit der verbleibenden zylindrischen Fläche des Nabenkörpers 12 in Berührung ist. Die sich so überdeckenden zylindrischen Flächen übertragen die Betriebskräfte zwischen dem Schlepphebel 8 und der Achse 13. Zwischen ihnen kann sich ein tragender Schmierfilm ausbilden. Zwischen dem von der Bohrung 17 der Achse 13 ausgehenden Kanal 18 und dem Ölkanal 19 im Schlepphebel 8 wird sich ein einheitlicher Öldruck einstellen, wobei eine Leckage zwischen den zylindrischen Flächen gering bleibt und für den motorischen Betrieb unerheblich ist.The axis 13 is in its bearing bore in the cylinder head 1 set so that its remaining cylindrical surface part with the remaining cylindrical surface of the hub body 12 is in contact. The so overlapping cylindrical surfaces transmit the operating forces between the rocker arm 8 and the axle 13. Between a load-bearing lubricating film can form on them. Between that originating from the bore 17 of the axis 13 Channel 18 and the oil channel 19 in the rocker arm 8 is there is a uniform oil pressure, one Leakage between the cylindrical surfaces remains low and is irrelevant to motor operation.

Für die Montage oder für eine repaturbedingte Demontage des Schlepphebels 8 kann die Achse 13 in ihrer Lagerbohrung um etwa 90° verdreht werden, so daß sie gegenüber dem Schlepphebel 8 eine Lage einnimmt, wie sie in Figur 2 dargestellt ist. Das Maß zwischen den beiden äußeren Begrenzungen 22 der Nabenöffnung 21 ist um einen geringen Betrag größer als das Maß zwischen der Abflachung 20 und dem gegenüberliegenden äußeren Umfang an der Achse 13. Die Nabenöffnung 21 kann somit über die aus ihrer Funktionslage verdrehte Achse 13 hinweg aufgesetzt oder auch abgenommen werden.For assembly or for repair-related disassembly the rocker arm 8, the axis 13 in its bearing bore be rotated by about 90 ° so that they face each other the rocker arm 8 assumes a position as shown in FIG. 2 is shown. The measure between the two outer boundaries 22 of the hub opening 21 is small Amount greater than the dimension between the flattening 20 and the opposite outer circumference on the axis 13. The hub opening 21 can thus be from the functional position twisted axis 13 placed over or be removed.

Zur Montage oder Demontage eines Schlepphebels 8 ist es somit nicht erforderlich, die Achse 13 aus ihrer Lagerbohrung im Zylinderkopf 1 zu entfernen. Sie ist dazu lediglich um einen Betrag von ca. 90° für die Dauer der Montage zu verdrehen. Bei einer Montage ist nach Aufsetzen des Schlepphebels 8 auf die so verdrehte Achse 13 und anschließendes Zurückdrehen der Achse 13 in ihre Funktionslage der Schlepphebel 8 mit seinem Nabenkörper 12 auf der Achse 13 formschlüssig und funktionssicher gehalten. Bei einer Demontage kann nach Verdrehen der Achse 13 der ursprünglich formschlüssig gehaltene Schlepphebel 8 radial von der Achse 13 abgenommen werden.To assemble or disassemble a rocker arm 8 it is therefore not necessary, the axis 13 from its bearing hole to remove in cylinder head 1. It is only for this by an amount of approximately 90 ° for the duration of the To twist assembly. When assembling is after putting on of the rocker arm 8 on the thus rotated axis 13 and then turning axis 13 back into its functional position the rocker arm 8 with its hub body 12 the axis 13 is held in a form-fitting and reliable manner. When disassembling after turning the axis 13 rocker arms 8 originally held in a form-fitting manner radially be removed from the axis 13.

Die Erfindung ist nicht auf das Ausführungsbeispiel beschränkt, sondern in gleicher Weise für die Anordnung eines Kipphebels anwendbar.The invention is not restricted to the exemplary embodiment, but in the same way for the arrangement of a Rocker arm applicable.

Bei Anordnung von mehreren längs in der Achse 13 verlaufenden Bohrungen ist es auch möglich, mehrere Ölkanäle in den Schlepphebeln bzw. Kipphebeln gesteuert mit Öl zu versorgen, um damit z. B. neben einem Ventilspielausgleichselement auch eine Ventilabschaltungseinrichtung zu betätigen.If several are arranged along the axis 13 It is also possible to drill multiple oil channels in the rocker arms or rocker arms controlled with oil supply to z. B. in addition to a valve clearance compensation element also a valve shutdown device actuate.

Claims (5)

  1. Arrangement of rockers or cam followers for the valve actuation of internal combustion engines with a through-shaft mounted in the cylinder head of the engine for supporting a row of rockers or cam followers and with hub bodies on the rockers or cam followers with which the rockers or cam followers are mounted pivotably on the shaft, characterised in that the shaft (13) has a cross-section which is provided with a flattened portion (20) and otherwise round, the hub bodies (12) are provided with a hub opening (21) on the side facing away from the operational bearing force, the remaining bearing angle at circumference of the hub bodies (12) as well as the remaining angle at circle circumference of the cross-section of the shaft (13) are greater than 180° and the shaft (13) can be rotated and fixed in its mounting.
  2. Arrangement according to claim 1, characterised in that the shaft (13) is provided with one or more bores (17) running with parallel axes and channels (18) branching off from the latter radially to the hub bodies (12) for conducting oil.
  3. Arrangement according to claim 2, characterised in that the rocker or cam follower (8) carries at one of its lever ends (9) a hydraulically operated valve clearance compensating element (10).
  4. Arrangement according to any of claims 1 to 3, characterised in that the rocker or cam follower (8) is provided with a roller (14) as the cam follower.
  5. Arrangement according to any of claims 1 to 4, characterised in that the rocker or cam follower is constructed in two parts and provided with a hydraulically operated valve cut-out device.
EP98111276A 1997-07-04 1998-06-18 Rocker arrangement for valve drive in an internal combustion engine Expired - Lifetime EP0889205B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19728533A DE19728533A1 (en) 1997-07-04 1997-07-04 Arrangement of rocker arms or rocker arms for valve control of internal combustion engines
DE19728533 1997-07-04

Publications (2)

Publication Number Publication Date
EP0889205A1 EP0889205A1 (en) 1999-01-07
EP0889205B1 true EP0889205B1 (en) 2002-05-15

Family

ID=7834601

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98111276A Expired - Lifetime EP0889205B1 (en) 1997-07-04 1998-06-18 Rocker arrangement for valve drive in an internal combustion engine

Country Status (3)

Country Link
EP (1) EP0889205B1 (en)
AT (1) ATE217684T1 (en)
DE (2) DE19728533A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPP996099A0 (en) 1999-04-23 1999-05-20 Silverbrook Research Pty Ltd A method and apparatus(sprint01)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1229334B (en) * 1960-12-07 1966-11-24 Ford Werke Ag Rocker arm arrangement for the valve control of internal combustion engines
JPS58172409A (en) * 1982-04-02 1983-10-11 Nissan Motor Co Ltd Valve rocker device of internal-combustion engine
FR2542372B1 (en) * 1983-03-08 1987-01-23 Mitsubishi Motors Corp ROCKER AND MANUFACTURING METHOD THEREOF
US4497307A (en) * 1984-02-03 1985-02-05 General Motors Corporation Integral rocker arm hydraulic lifter and bearing assembly
DE4234868C2 (en) 1992-10-16 1999-10-28 Schaeffler Waelzlager Ohg Process for the production of a rocker arm or rocker arm
DE19535498A1 (en) * 1995-09-25 1997-03-27 Audi Ag Valve tappet axle with fluid bores

Also Published As

Publication number Publication date
DE19728533A1 (en) 1999-01-07
EP0889205A1 (en) 1999-01-07
DE59804116D1 (en) 2002-06-20
ATE217684T1 (en) 2002-06-15

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