EP1387050A1 - Cylinder head for an internal combustion engine with variable lift valve drive - Google Patents

Cylinder head for an internal combustion engine with variable lift valve drive Download PDF

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Publication number
EP1387050A1
EP1387050A1 EP03015070A EP03015070A EP1387050A1 EP 1387050 A1 EP1387050 A1 EP 1387050A1 EP 03015070 A EP03015070 A EP 03015070A EP 03015070 A EP03015070 A EP 03015070A EP 1387050 A1 EP1387050 A1 EP 1387050A1
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EP
European Patent Office
Prior art keywords
cylinder head
link
combustion engine
internal combustion
backdrop
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
EP03015070A
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German (de)
French (fr)
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EP1387050B1 (en
Inventor
Michael Allgeier
Torsten Eder
Klaus Dr. Benedikt
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.)
Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
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Publication date
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Publication of EP1387050A1 publication Critical patent/EP1387050A1/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
    • 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
    • F01L13/0021—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 by modification of rocker arm ratio
    • F01L13/0026—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 by modification of rocker arm ratio by means of an eccentric
    • 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
    • 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
    • F01L13/0063—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 by modification of cam contact point by displacing an intermediate lever or wedge-shaped intermediate element, e.g. Tourtelot
    • F01L2013/0068—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 by modification of cam contact point by displacing an intermediate lever or wedge-shaped intermediate element, e.g. Tourtelot with an oscillating cam acting on the valve of the "BMW-Valvetronic" 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
    • F01L2303/00—Manufacturing of components used in valve arrangements
    • 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

Definitions

  • the invention relates to a cylinder head for an internal combustion engine with a variable stroke valve train according to the features in the preamble of the claim 1.
  • valve drive device for variable stroke adjustment a gas exchange valve of an internal combustion engine described.
  • Valve train device is the gas exchange valve with the interposition of a Transmission element with a movable about a rotation axis roller in operative connection with a control path comprising a no-lift curve and a lift curve, in an end region of a stroke for the gas exchange valve of a cam of a camshaft controlled pivot lever is arranged.
  • Object of the present invention is therefore, the backdrop as stiff as possible in the to integrate variable stroke valve train.
  • An embodiment according to claim 2 includes two technological variants the assembly of the scenery on the cylinder head. So the variant offers a detachable Compound, e.g. a screw, especially manufacturing advantages in terms of cost and simplicity in making the overall system. In contrast, offers the variant of pouring the scenery in the cylinder head an even higher manufacturing precision, since the finishing after the Pouring done.
  • a detachable Compound e.g. a screw
  • the embodiment according to claim 5 also reduces the production costs or the installation effort and thus the installation costs.
  • the manufacturing possibilities of the backdrop according to claim 6 ensure the Operation of the variable stroke valve train good wear characteristics, since the scenery made of a harder material than the cylinder head. In addition, it is the production as a sintered component cost and in relation to the selected Material designed for optimum wear resistance.
  • Fig. 1 shows a variable-stroke valve drive 2, which is shown in a rudimentary manner Cylinder head 1 is arranged.
  • the variable stroke valve train 2 consists essentially from a pivot lever 3, with a roller element 4 and a swing fulcrum 4 ', and a gate 5 with a slide track 5', an intermediate element 7, a gas exchange valve 8, a cam 9, which is arranged on a camshaft 9 ' is and a spring 10 and an adjusting device 11.
  • the backdrop 5 is stationary poured into the cylinder head 1.
  • the pivot lever 3 is supported on the one hand via the roller element 4 on the slide track 5 'of the link 5 from and the other with a control track 6, which consists of a Leerhubkurve 6 'and a lift curve 6 " on the intermediate element 7 from.
  • the intermediate element 7 is a roller cam follower, whose role is rotatable about a rotation axis 12.
  • the rotation axis 12 is also the center of the slide track 5 'in a Nullhub ein.
  • the Intermediate element is supported on the one hand by the axis of rotation 12 on a clearance compensation element 14, here a hydraulic valve clearance compensation element, and on the other hand on the gas exchange valve 8 from. Between the control track 6 and the first roller element 4 is on the pivot lever 3 another roller element thirteenth arranged.
  • Fig. 2 shows a three-dimensional view of the cast in a cylinder head 1 Gate 5 with the adjusting device 11, on which the first roller element 4 on the one hand and on the slide track 5 'on the other hand supported. Shown is a staggered in Nockenwellenachscardi double arrangement, of which only is addressed in more detail to the reader facing arrangement. Furthermore, in approximately centrally in the pivot lever 3, the second roller element 13 can be seen, which is supported on the cam 9 of the camshaft shown 9 'shown.
  • the backdrop 5 poured directly into the cylinder head 1. It is thus an integral part of the cylinder head 1.
  • a detachable connection such as a screw, conceivable.
  • the gate 5 is made of a sintered material, but it can also be produced by forging or casting.
  • the cylinder head 1 is preferably made of a light metal alloy.
  • This backdrop block is used either for a cylinder of Not shown internal combustion engine or for all cylinders simultaneously as Backing 5.
  • the set blocks can also be forged, cast or sintered be.
  • the attachment in the cylinder head 1 is analogous to the attachment of a single Gate 5 in the cylinder head 1.

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)

Abstract

The cam track (5) is located on the cylinder head (1).

Description

Die Erfindung betrifft einen Zylinderkopf für eine Brennkraftmaschine mit einem hubvariablen Ventiltrieb gemäß der Merkmale im Oberbegriff des Patentanspruchs 1.The invention relates to a cylinder head for an internal combustion engine with a variable stroke valve train according to the features in the preamble of the claim 1.

Sie geht von der noch nicht veröffentlichten deutschen Patentanmeldung DE 101 23 186 aus. In dieser ist eine Ventiltriebsvorrichtung zur variablen Hubverstellung eines Gaswechselventils einer Brennkraftmaschine beschrieben. Bei der Ventiltriebsvorrichtung steht das Gaswechselventil unter Zwischenschaltung eines Übertragungselementes mit einer um eine Drehachse beweglichen Rolle in Wirkverbindung mit einer, eine Leerhubkurve und eine Hubkurve umfassenden Steuerbahn, die in einem Endbereich eines zur Hubbetätigung des Gaswechselventils von einem Nocken einer Nockenwelle gesteuerten Schwenkhebels angeordnet ist. Der mittels einer Feder über eine Rolle dem Nocken spielfrei zugeordnete Schwenkhebel ist andernends zur variablen Hubverstellung des Gaswechselventils über einen mittels einer Verstelleinrichtung gesteuert lageveränderbaren und fixierbaren Schwingdrehpunkt längs einer Kreisbahn abgestützt. Zur Erzielung einer rein rotatorischen Bewegung bzw. reinen Schwenkbewegung des Schwenkhebels um seinen Schwingdrehpunkt bei einem reduzierten Hub des Gaswechselventils ist eine, an einem Gehäuseteil der Brennkraftmaschine angeordneten Kreisbahn als Kulisse mit einem Radius "R" um die Drehachse der Rolle des Übertragungselementes zur gesteuerten lageveränderbaren Abstützung des Schwenkhebels vorgesehen. It is based on the not yet published German patent application DE 101 23 186 from. In this is a valve drive device for variable stroke adjustment a gas exchange valve of an internal combustion engine described. In the Valve train device is the gas exchange valve with the interposition of a Transmission element with a movable about a rotation axis roller in operative connection with a control path comprising a no-lift curve and a lift curve, in an end region of a stroke for the gas exchange valve of a cam of a camshaft controlled pivot lever is arranged. Of the by means of a spring via a roller cam associated with the play associated pivoting lever is the other hand for variable stroke adjustment of the gas exchange valve via a controlled by means of an adjustment position variable and fixable Oscillating fulcrum supported along a circular path. To achieve a purely rotational Movement or pure pivoting movement of the pivot lever to his Vibration fulcrum at a reduced lift of the gas exchange valve is on a housing part of the internal combustion engine arranged circular path as a backdrop with a radius "R" about the axis of rotation of the roller of the transmission element to the controlled position variable support of the pivot lever provided.

Ausschlaggebend für die Qualität eines gattungsgemäßen hubvariablen Ventiltriebs ist die Spielfreiheit des Schwenkhebels, sowie eine hohe Steifigkeit der einzelnen Bauelemente.Decisive for the quality of a generic variable stroke valve train is the backlash of the pivot lever, as well as a high rigidity of the individual Components.

Aufgabe der vorliegenden Erfindung ist es daher, die Kulisse möglichst steif in den hubvariablen Ventiltrieb zu integrieren.Object of the present invention is therefore, the backdrop as stiff as possible in the to integrate variable stroke valve train.

Diese Aufgabe wird erfindungsgemäß durch das Merkmal im kennzeichnenden Teil des Patentanspruchs 1 gelöst.
Die erfindungsgemäße Ausgestaltung führt zu einer hohen Steifigkeit der gesamten Ventiltriebsanordnung. Darüber hinaus bietet die Anordnung der Kulisse direkt am Zylinderkopf günstige Montagebedingungen sowie eine hohe mechanische Bearbeitungsgenauigkeit für den gesamten Ventiltrieb bei der Fertigung.This object is achieved by the feature in the characterizing part of patent claim 1.
The inventive design results in a high rigidity of the entire valve train assembly. In addition, the arrangement of the scenery directly on the cylinder head offers favorable installation conditions and high mechanical machining accuracy for the entire valve train during production.

Eine Ausgestaltung nach Patentanspruch 2 beinhaltet zwei technologische Varianten der Montage der Kulisse am Zylinderkopf. So bietet die Variante einer lösbaren Verbindung, wie z.B. einer Schraubverbindung, vor allem fertigungstechnische Vorteile in Bezug auf Kosten und Einfachheit bei der Herstellung des Gesamtsystems. Demgegenüber bietet die Variante des Eingießens der Kulisse in den Zylinderkopf eine noch höhere fertigungstechnische Präzision, da die Endbearbeitung nach dem Eingießen erfolgt.An embodiment according to claim 2 includes two technological variants the assembly of the scenery on the cylinder head. So the variant offers a detachable Compound, e.g. a screw, especially manufacturing advantages in terms of cost and simplicity in making the overall system. In contrast, offers the variant of pouring the scenery in the cylinder head an even higher manufacturing precision, since the finishing after the Pouring done.

Die Maßnahmen gemäß der Patentansprüche 3 und 4 reduzieren nochmals in vorteilhafter Weise die Herstellkosten. Die Anzahl der Einzelbauteile wird durch diese Maßnahme verringert sowie die Montage am bzw. das Eingießen im Zylinderkopf erleichtert.The measures according to claims 3 and 4 reduce again in an advantageous manner Way the manufacturing costs. The number of individual components is through this Measure reduced as well as the mounting on or pouring into the cylinder head facilitated.

Die Ausgestaltung gemäß Patentanspruch 5 reduziert ebenfalls die Herstellkosten bzw. den Montageaufwand und somit die Montagekosten.The embodiment according to claim 5 also reduces the production costs or the installation effort and thus the installation costs.

Die Herstellmöglichkeiten der Kulisse gemäß Patentanspruch 6 gewährleisten beim Betrieb des hubvariablen Ventiltriebs gute Verschleißeigenschaften, da die Kulisse aus einem härteren Material gefertigt wird als der Zylinderkopf. Darüber hinaus ist die Herstellung als Sinterbauteil kostengünstig und in Bezug auf das ausgewählte Material für optimale Verschleißfestigkeit auslegbar.The manufacturing possibilities of the backdrop according to claim 6 ensure the Operation of the variable stroke valve train good wear characteristics, since the scenery made of a harder material than the cylinder head. In addition, it is the production as a sintered component cost and in relation to the selected Material designed for optimum wear resistance.

Bei der Ausführung gemäß Patentanspruch 7 entfallen separate Schmiermittelleitungen, wodurch die Herstellkosten des Zylinderkopfes nochmals wesentlich reduziert werden. Darüber hinaus wird aufgrund der hochintegrierten Bauweise Bauraum eingespart sowie das Gewicht des Zylinderkopfes reduziert.In the embodiment according to claim 7 accounts for separate lubricant lines, whereby the manufacturing cost of the cylinder head again significantly reduced become. In addition, due to the highly integrated design space Saved and reduced the weight of the cylinder head.

Bei einer Ausgestaltung gemäß Patentanspruch 8 übernimmt die Kulisse nicht nur die Aufgabe der Führung des Schwenkhebels sondern auch noch die Aufgabe der axialen Führung des Schwenkhebels. Weitere separate axiale Führungselemente können somit entfallen.In an embodiment according to claim 8 takes over the backdrop not only the task of guiding the pivot lever but also the task of axial guidance of the pivot lever. Other separate axial guide elements can thus be omitted.

Im Folgenden ist die Erfindung anhand eines bevorzugten Ausführungsbeispieles in zwei Figuren näher erläutert.

Fig. 1
zeigt den schematischen Aufbau eines hubvariablen Ventiltriebes,
Fig. 2
zeigt eine dreidimensionale Aufsicht auf eine in einem Zylinderkopf eingegossene Kulisse.
In the following the invention with reference to a preferred embodiment is explained in more detail in two figures.
Fig. 1
shows the schematic structure of a variable-stroke valve train,
Fig. 2
shows a three-dimensional view of a cast in a cylinder head backdrop.

Für die selben Bauteile in Fig. 1 und Fig. 2 gelten dieselben Bezugszeichen.The same reference numerals apply to the same components in FIGS. 1 and 2.

Fig. 1 zeigt einen hubvariablen Ventiltrieb 2, der in einem ansatzweise dargestellten Zylinderkopf 1 angeordnet ist. Der hubvariable Ventiltrieb 2 besteht im Wesentlichen aus einem Schwenkhebel 3, mit einem Rollenelement 4 und einem Schwingdrehpunkt 4', sowie einer Kulisse 5 mit einer Kulissenbahn 5', einem Zwischenelement 7, einem Gaswechselventil 8, einem Nocken 9, der auf einer Nockenwelle 9' angeordnet ist sowie einer Feder 10 und einer Verstelleinrichtung 11. Die Kulisse 5 ist ortsfest in den Zylinderkopf 1 eingegossen. Der Schwenkhebel 3 stützt sich einerseits über das Rollenelement 4 auf der Kulissenbahn 5' der Kulisse 5 ab und andererseits mit einer Steuerbahn 6, die aus einer Leerhubkurve 6' und einer Hubkurve 6" besteht, auf dem Zwischenelement 7 ab. Das Zwischenelement 7 ist ein Rollenschlepphebel, dessen Rolle um eine Drehachse 12 drehbar ist. Die Drehachse 12 ist gleichzeitig der Mittelpunkt der Kulissenbahn 5' in einer Nullhubstellung. Das Zwischenelement stützt sich einerseits von der Drehachse 12 auf einem Spielausgleichselement 14, hier einem hydraulischen Ventilspielausgleichselement, und andererseits auf dem Gaswechselventil 8 ab. Zwischen der Steuerbahn 6 und dem ersten Rollenelement 4 ist an den Schwenkhebel 3 ein weiteres Rollenelement 13 angeordnet. Dieses steht in Wirkverbindung mit dem Nocken 9. Bei Drehung der Nockenwelle 9' schwenkt der Schwenkhebel 3 und drückt mit seiner Hubkurve 6" das Gaswechselventil in eine nicht näher dargestellte Öffnungsstellung weg. Das erste Rollenelement 4 ist neben der Abstützung auf der Kulissenbahn 5' weiter an einer Verstelleinrichtung 11 abgestützt, mit der der Schwingdrehpunkt 4' des ersten Rollenelements 4 parallel zur Kulissenbahn 5' verschoben werden kann. Eine derartige Verschiebung bewirkt eine Veränderung des Ventilhubes.Fig. 1 shows a variable-stroke valve drive 2, which is shown in a rudimentary manner Cylinder head 1 is arranged. The variable stroke valve train 2 consists essentially from a pivot lever 3, with a roller element 4 and a swing fulcrum 4 ', and a gate 5 with a slide track 5', an intermediate element 7, a gas exchange valve 8, a cam 9, which is arranged on a camshaft 9 ' is and a spring 10 and an adjusting device 11. The backdrop 5 is stationary poured into the cylinder head 1. The pivot lever 3 is supported on the one hand via the roller element 4 on the slide track 5 'of the link 5 from and the other with a control track 6, which consists of a Leerhubkurve 6 'and a lift curve 6 " on the intermediate element 7 from. The intermediate element 7 is a roller cam follower, whose role is rotatable about a rotation axis 12. The rotation axis 12 is also the center of the slide track 5 'in a Nullhubstellung. The Intermediate element is supported on the one hand by the axis of rotation 12 on a clearance compensation element 14, here a hydraulic valve clearance compensation element, and on the other hand on the gas exchange valve 8 from. Between the control track 6 and the first roller element 4 is on the pivot lever 3 another roller element thirteenth arranged. This is in operative connection with the cam 9. When turning the Camshaft 9 'pivots the pivot lever 3 and presses with its lift curve 6 " the gas exchange valve in an open position, not shown away. The first roller element 4 is next to the support on the link path 5 'on an adjusting device 11 supported, with the swing pivot 4 'of the first Roller element 4 parallel to the slide track 5 'can be moved. Such Displacement causes a change in the valve lift.

Fig. 2 zeigt eine dreidimensionale Aufsicht auf die in einem Zylinderkopf 1 eingegossene Kulisse 5 mit der Verstelleinrichtung 11, auf der sich das erste Rollenelement 4 einerseits und auf der Kulissenbahn 5' andererseits abstützt. Dargestellt ist eine in Nockenwellenachsrichtung versetzte doppelte Anordnung, von der aber nur auf die dem Leser zugewandte Anordnung näher eingegangen wird. Ferner ist in etwa mittig im Schwenkhebel 3 das zweite Rollenelement 13 erkennbar, welches sich auf dem Nocken 9 der geschnitten dargestellten Nockenwelle 9' abstützt.Fig. 2 shows a three-dimensional view of the cast in a cylinder head 1 Gate 5 with the adjusting device 11, on which the first roller element 4 on the one hand and on the slide track 5 'on the other hand supported. Shown is a staggered in Nockenwellenachsrichtung double arrangement, of which only is addressed in more detail to the reader facing arrangement. Furthermore, in approximately centrally in the pivot lever 3, the second roller element 13 can be seen, which is supported on the cam 9 of the camshaft shown 9 'shown.

Um eine möglichst große Steifigkeit im hubvariablen Ventiltrieb 2 zu erreichen, ist die Kulisse 5 direkt in den Zylinderkopf 1 eingegossen. Sie ist somit integraler Bestandteil des Zylinderkopfes 1. In anderen Ausführungen ist statt des Eingießens auch eine lösbare Verbindung, wie beispielsweise eine Schraubverbindung, denkbar.In order to achieve the greatest possible rigidity in the variable-stroke valve drive 2, is the backdrop 5 poured directly into the cylinder head 1. It is thus an integral part of the cylinder head 1. In other embodiments, instead of pouring Also, a detachable connection, such as a screw, conceivable.

Im vorliegenden Ausführungsbeispiel ist die Kulisse 5 aus einem Sintermaterial hergestellt, sie kann aber auch durch Schmieden oder durch Gießen produziert werden. Der Zylinderkopf 1 besteht vorzugsweise aus einer Leichtmetalllegierung.In the present embodiment, the gate 5 is made of a sintered material, but it can also be produced by forging or casting. The cylinder head 1 is preferably made of a light metal alloy.

Ferner ist es möglich mehrere Kulissen 5 zu einem nicht dargestellten Kulissenblock zusammenzufassen. Dieser Kulissenblock dient entweder für einen Zylinder der nicht dargestellten Brennkraftmaschine oder für sämtliche Zylinder gleichzeitig als Kulisse 5. Auch die Kulissenblöcke können geschmiedet, gegossen oder gesintert sein. Die Befestigung in dem Zylinderkopf 1 ist analog der Befestigung einer einzelnen Kulisse 5 im Zylinderkopf 1.Furthermore, it is possible several scenes 5 to a backdrop block, not shown summarize. This backdrop block is used either for a cylinder of Not shown internal combustion engine or for all cylinders simultaneously as Backing 5. The set blocks can also be forged, cast or sintered be. The attachment in the cylinder head 1 is analogous to the attachment of a single Gate 5 in the cylinder head 1.

in weiteren Ausführungsvarianten können direkt in die Kulissen 5 bzw. Kulissenblöcke Schmiermittelkanäle integriert werden, wodurch externe, bzw. separate Schmiermittelleitungen entfallen können. Darüber hinaus können die Kulissen 5, bzw. Kulissenblöcke auch derart ausgestaltet sein, dass sie gleichzeitig als axiale Führung für den Schwenkhebel 3 fungieren. in further embodiments can directly into the scenes 5 or backdrop blocks Lubricant channels are integrated, making external, or separate Lubricant lines can be omitted. In addition, the scenes 5, or gate blocks also be designed such that they simultaneously as axial Guide the pivot lever 3.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Zylinderkopfcylinder head
22
Hubvariabler VentiltriebHubvariabler valve drive
33
Schwenkhebelpivoting lever
44
Erstes RollenelementFirst roller element
4'4 '
SchwingdrehpunktSwing fulcrum
55
Kulissescenery
5'5 '
Kulissenbahnlink path
66
Steuerbahncontrol track
6'6 '
LeerhubkurveLeerhubkurve
6"6 "
Hubkurvestroke curve
77
Zwischenelementintermediate element
88th
GaswechselventilGas exchange valve
99
Nockencam
9'9 '
Nockenwellecamshaft
1010
Federfeather
1111
Verstelleinrichtungadjustment
1212
Drehachseaxis of rotation
1313
Zweites RollenelementSecond roller element
1414
SpielausgleichselementLash adjuster

Claims (8)

Zylinderkopf (1) für eine Brennkraftmaschine mit einem hubvariablen Ventiltrieb (2), mit einem Schwenkhebel (3), der einerseits mit einem Rollenelement (4) mit einem Schwingdrehpunkt (4') auf einer Kulissenbahn (5') einer Kulisse (5) und andererseits mit einer Steuerbahn (6) auf einem Zwischenelement (7) zu einem Gaswechselventil (8) spielfrei abgestützt ist, wobei der Schwenkhebel (3) zur Hubeinstellung zwischen den Abstützpunkten einerseits von einem Nocken (9) einer Nockenwelle (9') entgegen einer Kraft einer Feder (10) gesteuert schwenkbar und andererseits der Schwingdrehpunkt (4') von einer Verstelleinrichtung (11) zur Hubhöhenverstellung parallel zur Kulissenbahn (5') gesteuert verschiebbar ist,
dadurch gekennzeichnet, dass die Kulisse (5) am Zylinderkopf (1) angeordnet ist.Cylinder head (1) for an internal combustion engine with a variable-stroke valve drive (2), with a pivot lever (3), on the one hand with a roller element (4) with a swing pivot point (4 ') on a link path (5') of a link (5) and on the other hand with a control track (6) on an intermediate element (7) to a gas exchange valve (8) is supported without play, wherein the pivot lever (3) for stroke adjustment between the support points on the one hand by a cam (9) of a camshaft (9 ') against a force a spring (10) controlled pivotable and on the other hand, the oscillating pivot point (4 ') of an adjusting device (11) for lifting height parallel to the guide path (5') is controlled displaced,
characterized in that the link (5) on the cylinder head (1) is arranged. Kulisse nach Patentanspruch 1,
dadurch gekennzeichnet, dass die Kulisse (5) lösbar mit dem Zylinderkopf (1) verbunden oder teilweise in den Zylinderkopf (1) eingegossen ist. Gate according to claim 1,
characterized in that the link (5) releasably connected to the cylinder head (1) or partially cast in the cylinder head (1). Kulisse nach Patentanspruch 1 oder 2,
dadurch gekennzeichnet, dass zumindest zwei Kulissen (5) zu einem Kulissenblock zusammenfassbar sind.A backdrop according to claim 1 or 2,
characterized in that at least two scenes (5) are summarized to a sliding block. Kulisse nach einem der zuvor genannten Patentansprüche, wobei die Brennkraftmaschine mehr als einen Zylinder aufweist,
dadurch gekennzeichnet, dass jedem Zylinder ein Kulissenblock zuordenbar ist.A gate according to any one of the preceding claims, wherein the internal combustion engine has more than one cylinder,
characterized in that each cylinder a link block is assigned. Kulisse nach einem der zuvor genannten Patentansprüche,
dadurch gekennzeichnet, dass allen Zylindern der Brennkraftmaschine ein gemeinsamer Kulissenblock zuordenbar ist.A backdrop according to one of the aforementioned claims,
characterized in that all cylinders of the internal combustion engine, a common block block is assigned. Kulisse nach einem der zuvor genannten Patentansprüche,
dadurch gekennzeichnet, dass die Kulisse (5) oder der Kulissenblock geschmiedet oder gesintert oder gegossen ist.A backdrop according to one of the aforementioned claims,
characterized in that the link (5) or the link block is forged or sintered or cast. Kulisse nach einem der zuvor genannten Patentansprüche,
dadurch gekennzeichnet, dass in die Kulisse (5) oder in den Kulissenblock eine Schmiervorrichtung integriert ist.A backdrop according to one of the aforementioned claims,
characterized in that in the slide (5) or in the sliding block a lubricating device is integrated. Kulisse nach einem der zuvor genannten Patentansprüche,
dadurch gekennzeichnet, dass der Schwenkhebel (3) von der Kulisse (5) in axialer Richtung führbar ist.A backdrop according to one of the aforementioned claims,
characterized in that the pivot lever (3) of the link (5) can be guided in the axial direction.
EP03015070A 2002-08-02 2003-07-03 Cylinder head for an internal combustion engine with variable lift valve drive Expired - Lifetime EP1387050B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10235400A DE10235400A1 (en) 2002-08-02 2002-08-02 Cylinder head for an internal combustion engine with a variable stroke valve train
DE10235400 2002-08-02

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EP1387050A1 true EP1387050A1 (en) 2004-02-04
EP1387050B1 EP1387050B1 (en) 2005-03-16

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DE (2) DE10235400A1 (en)

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WO2006092312A1 (en) * 2005-03-03 2006-09-08 Hydraulik-Ring Gmbh Variable mechanical valve control for an internal combustion engine
EP1862649A1 (en) * 2006-04-21 2007-12-05 Schaeffler KG Swing arm for a valve operating mechanism with a variable
CN103925029A (en) * 2013-01-15 2014-07-16 长城汽车股份有限公司 Variable valve lift driving device
WO2014206591A1 (en) * 2013-06-25 2014-12-31 Pierburg Gmbh Spring arrangement for a variable valve drive of an internal combustion engine
WO2015110189A1 (en) * 2014-01-23 2015-07-30 Pierburg Gmbh Transmission assembly for a mechanically controllable valve train, and mechanically controllable valve train

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DE102004008389A1 (en) 2004-02-20 2005-09-08 Bayerische Motoren Werke Ag Valve drive for an I.C. engine comprises a first adjusting device with a cam whose radius increases or decreases over a periphery with respect to a rotating axle
DE102004021646A1 (en) * 2004-05-03 2005-12-01 Bayerische Motoren Werke Ag Adjusting shaft of a variable-stroke valve drive
KR100993368B1 (en) * 2008-01-22 2010-11-09 현대자동차주식회사 Continuous variable valve lift apparatus
DE102011082227A1 (en) 2011-09-07 2013-03-07 Bayerische Motoren Werke Aktiengesellschaft Setting for a variable stroke valve train in a cylinder head of an internal combustion engine

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WO2006092312A1 (en) * 2005-03-03 2006-09-08 Hydraulik-Ring Gmbh Variable mechanical valve control for an internal combustion engine
US7603973B2 (en) 2005-03-03 2009-10-20 Hydraulik-Ring Gmbh Variable mechanical valve control for an internal combustion engine
US7624711B2 (en) 2005-03-03 2009-12-01 Hydraulik-Ring Gmbh Variable mechanical valve control for an internal combustion engine
EP1862649A1 (en) * 2006-04-21 2007-12-05 Schaeffler KG Swing arm for a valve operating mechanism with a variable
CN103925029A (en) * 2013-01-15 2014-07-16 长城汽车股份有限公司 Variable valve lift driving device
CN103925029B (en) * 2013-01-15 2016-04-06 长城汽车股份有限公司 Variable valve lift driving device
WO2014206591A1 (en) * 2013-06-25 2014-12-31 Pierburg Gmbh Spring arrangement for a variable valve drive of an internal combustion engine
US9784142B2 (en) 2013-06-25 2017-10-10 Pierburg Gmbh Spring arrangement for a variable valve drive of an internal combustion engine
WO2015110189A1 (en) * 2014-01-23 2015-07-30 Pierburg Gmbh Transmission assembly for a mechanically controllable valve train, and mechanically controllable valve train
CN105658918A (en) * 2014-01-23 2016-06-08 皮尔伯格有限责任公司 Transmission assembly for a mechanically controllable valve train, and mechanically controllable valve train
CN105658918B (en) * 2014-01-23 2019-10-01 皮尔伯格有限责任公司 Drive assembly and Mechanical controllable formula valve mechanism for Mechanical controllable formula valve mechanism

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DE50300363D1 (en) 2005-04-21
EP1387050B1 (en) 2005-03-16
DE10235400A1 (en) 2004-02-19

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