EP0889205A1 - Rocker arrangement for valve drive in an internal combustion engine - Google Patents

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

Info

Publication number
EP0889205A1
EP0889205A1 EP98111276A EP98111276A EP0889205A1 EP 0889205 A1 EP0889205 A1 EP 0889205A1 EP 98111276 A EP98111276 A EP 98111276A EP 98111276 A EP98111276 A EP 98111276A EP 0889205 A1 EP0889205 A1 EP 0889205A1
Authority
EP
European Patent Office
Prior art keywords
axis
rocker arm
rocker arms
rocker
hub
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.)
Granted
Application number
EP98111276A
Other languages
German (de)
French (fr)
Other versions
EP0889205B1 (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.)
Adam Opel GmbH
Original Assignee
Adam Opel GmbH
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
Application filed by Adam Opel GmbH filed Critical Adam Opel GmbH
Publication of EP0889205A1 publication Critical patent/EP0889205A1/en
Application granted granted Critical
Publication of EP0889205B1 publication Critical patent/EP0889205B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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 or frames
    • 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.
  • Such an arrangement for rocker arms shows, for example DE 35 03 313.
  • tilting hoists 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 or
  • 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.
  • 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.
  • Of 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 recesses.
  • 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.

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 Kipphebei 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 tilting hoists 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 Kipp- oder 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 or 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. Alternatively 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 of 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. Of 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 recesses.

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)

Anordnung von Kipphebeln oder Schlepphebeln für die Ventilbetätigung von Brennkraftmaschinen mit einer im Zylinderkopf der Brennkraftmaschine gelagerten durchgehenden Achse zur Abstützung einer Reihe von Kipp- oder Schlepphebeln und mit Nabenkörpern an den Kipp- oder Schlepphebeln, mit denen die Kipp- oder Schlepphebel schwenkbar auf der Achse gelagert sind, dadurch gekennzeichnet, daß die Achse (13) einen mit einer Abplattung (20) versehenen und im übrigen kreisrunden Querschnitt aufweist, die Nabenkörper (12) an der von der Betriebsauflagekraft abgewandten Seite mit einer Nabenöffnung (21) versehen sind, der verbleibende Lagerumfangswinkel der Nabenkörper (12) sowie der verbleibende Kreisumfangswinkel des Querschnitts der Achse (13) größer als 180° sind und die Achse (13) in ihrer Lagerung verdrehbar und festlegbar ist.Arrangement of rocker arms or rocker arms for valve actuation of internal combustion engines with a continuous axle mounted in the cylinder head of the internal combustion engine to support a series of rocker arms or rocker arms and with hub bodies on the rocker arms or rocker arms with which the rocker arms or rocker arms are pivotably mounted on the axle characterized in that the axis (13) has a flattened portion (20) and an otherwise circular cross section, the hub bodies (12) are provided with a hub opening (21) on the side facing away from the operating force, the remaining bearing circumferential angle the hub body (12) and the remaining circumferential angle of the cross section of the axis (13) are greater than 180 ° and the axis (13) can be rotated and fixed in its mounting. Anordnung nach Anspruch 1, dadurch gekennzeichnet, daß die Achse (13) mit einer oder mehreren achsparallel verlaufenden Bohrungen (17) und von diesen radial zu den Nabenkörpern (12) abzweigenden Kanälen (18) zur Führung von Öl versehen ist.Arrangement according to Claim 1, characterized in that the axis (13) is provided with one or more bores (17) running parallel to the axis and channels (18) branching from them radially to the hub bodies (12) for guiding oil. Anordnung nach Anspruch 2, dadurch gekennzeichnet, daß der Kipp- oder Schlepphebel (8) an einem seiner Hebelenden (9) ein hydraulisch betätigtes Ventilspielausgleichselement (10) trägt.Arrangement according to claim 2, characterized in that the rocker arm or rocker arm (8) carries a hydraulically actuated valve lash adjuster (10) on one of its lever ends (9). Anordnung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Kipp- oder Schlepphebel (8) mit einer Rolle (14) als Nockenfolger versehen ist.Arrangement according to one of claims 1 to 3, characterized in that the rocker arm or rocker arm (8) is provided with a roller (14) as a cam follower. Anordnung nach zumindest einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Kipp- oder Schlepphebel zweigeteilt ausgeführt und mit einer hydraulisch betätigten Ventilabschaltungseinrichtung versehen ist.Arrangement according to at least one of claims 1 to 4, characterized in that the rocker arm or rocker arm is designed in two parts and is provided with a hydraulically operated valve shut-off 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 true EP0889205A1 (en) 1999-01-07
EP0889205B1 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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8059309B2 (en) 1999-04-23 2011-11-15 Silverbrook Research Pty Ltd Duplex printer with internal hard drive

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0091096A1 (en) * 1982-04-02 1983-10-12 Nissan Motor Co., Ltd. Valve operating system of internal combustion engine
GB2138093A (en) * 1983-03-08 1984-10-17 Mitsubishi Motors Corp Rocker arm for internal combustion engine
DE3503313A1 (en) 1984-02-03 1985-08-14 Gen Motors Corp ROCKER ARM ARRANGEMENT
DE4234868A1 (en) 1992-10-16 1994-04-21 Schaeffler Waelzlager Kg Rocker arm or rocker arm for a valve train of a reciprocating piston internal combustion engine
DE19535498A1 (en) * 1995-09-25 1997-03-27 Audi Ag Valve tappet axle with fluid bores

Family Cites Families (1)

* 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

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0091096A1 (en) * 1982-04-02 1983-10-12 Nissan Motor Co., Ltd. Valve operating system of internal combustion engine
GB2138093A (en) * 1983-03-08 1984-10-17 Mitsubishi Motors Corp Rocker arm for internal combustion engine
DE3503313A1 (en) 1984-02-03 1985-08-14 Gen Motors Corp ROCKER ARM ARRANGEMENT
DE4234868A1 (en) 1992-10-16 1994-04-21 Schaeffler Waelzlager Kg Rocker arm or rocker arm for a valve train of a reciprocating piston internal combustion engine
DE19535498A1 (en) * 1995-09-25 1997-03-27 Audi Ag Valve tappet axle with fluid bores

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8059309B2 (en) 1999-04-23 2011-11-15 Silverbrook Research Pty Ltd Duplex printer with internal hard drive

Also Published As

Publication number Publication date
EP0889205B1 (en) 2002-05-15
ATE217684T1 (en) 2002-06-15
DE19728533A1 (en) 1999-01-07
DE59804116D1 (en) 2002-06-20

Similar Documents

Publication Publication Date Title
DE19700316C2 (en) Rocker arm arrangement
DE10230108B4 (en) Device for adjusting the stroke of a valve actuated by a camshaft
DE112009002211B4 (en) Engine braking device for an internal combustion engine
EP0636206B1 (en) Valve actuating mechanism for an internal combustion engine
DE10348367A1 (en) Compact two-stage rocker arm arrangement
DE4301453C2 (en) Variable valve control of internal combustion engines
DE102006054168A1 (en) Two-stage rocker arm with roller element cam followers
DE102005039368A1 (en) Switchable valve actuation mechanism
DE4410381C2 (en) Valve train for an internal combustion engine
DE19757504A1 (en) Constructed camshaft for internal combustion engine
DE4237777C2 (en) Valve actuator
EP0023250B1 (en) Actuating mechanism for inlet or exhaust valves of internal-combustion engines
DE102007016209B4 (en) Valve train for gas exchange valves with axial force reduction in camshaft
EP1387048B1 (en) Rocking lever for valve drive with variable lift
DE3330141A1 (en) Valve control for internal combustion engines
EP1205643A1 (en) Valve drive in an internal combustion engine
DE102011106565A1 (en) Full variable stroke valve controller for internal combustion engine, has lever whose return spring is formed as yoke spring, where windings of yoke spring are arranged below cam shaft, and leg of yoke spring engages from downside at lever
EP0889205B1 (en) Rocker arrangement for valve drive in an internal combustion engine
DE19744600A1 (en) Switchable valve train for internal combustion engines
DE4337330C2 (en) Roller tappet with two rollers per valve for valve drives of internal combustion engines with an overhead camshaft
DE19630309C2 (en) Device for interrupting the flow of power between a camshaft and at least one valve
DE19519399A1 (en) Valve train of an internal combustion engine
EP1590554B1 (en) Fully variable mechanical valve drive mechanism for a piston-type internal combustion engine comprising adjustable valve play compensation
DE10047255A1 (en) Automatic decompression device for valve-controlled internal combustion engines has decompression lever mounted on one end face of camshaft by means of slot and is loaded against centrifugal force action by spring
EP1118762A2 (en) Cylinder head for a valve controlled combustion engine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT DE FR GB

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 19990519

AKX Designation fees paid

Free format text: AT DE FR GB

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

17Q First examination report despatched

Effective date: 20011031

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT DE FR GB

REF Corresponds to:

Ref document number: 217684

Country of ref document: AT

Date of ref document: 20020615

Kind code of ref document: T

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 59804116

Country of ref document: DE

Date of ref document: 20020620

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20020720

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20030218

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

Free format text: REGISTERED BETWEEN 20090219 AND 20090225

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

Free format text: REGISTERED BETWEEN 20090305 AND 20090311

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

Free format text: REGISTERED BETWEEN 20091029 AND 20091104

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

Free format text: REGISTERED BETWEEN 20091105 AND 20091111

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 59804116

Country of ref document: DE

Owner name: GM GLOBAL TECHNOLOGY OPERATIONS LLC (N. D. GES, US

Free format text: FORMER OWNER: GM GLOBAL TECHNOLOGY OPERATIONS, INC., DETROIT, MICH., US

Effective date: 20110323

Ref country code: DE

Ref legal event code: R081

Ref document number: 59804116

Country of ref document: DE

Owner name: GM GLOBAL TECHNOLOGY OPERATIONS LLC (N. D. GES, US

Free format text: FORMER OWNER: GM GLOBAL TECHNOLOGY OPERATIONS, INC., DETROIT, US

Effective date: 20110323

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20110621

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20110615

Year of fee payment: 14

Ref country code: AT

Payment date: 20110526

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20120613

Year of fee payment: 15

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 217684

Country of ref document: AT

Kind code of ref document: T

Effective date: 20120618

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20120618

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20130228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120702

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120618

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120618

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 59804116

Country of ref document: DE

Effective date: 20140101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140101