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 PDFInfo
- 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
- Authority
- 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
Links
Images
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
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
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
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
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
Die Ausgestaltung gemäß Patentanspruch 5 reduziert ebenfalls die Herstellkosten
bzw. den Montageaufwand und somit die Montagekosten.The embodiment according to
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
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
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
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.
- 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-
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
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-
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
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
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
- 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)
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.
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).
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.
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.
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.
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.
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.
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.
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 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1387050A1 true EP1387050A1 (en) | 2004-02-04 |
EP1387050B1 EP1387050B1 (en) | 2005-03-16 |
Family
ID=30010566
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03015070A Expired - Lifetime EP1387050B1 (en) | 2002-08-02 | 2003-07-03 | Cylinder head for an internal combustion engine with variable lift valve drive |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1387050B1 (en) |
DE (2) | DE10235400A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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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DE4326331A1 (en) * | 1992-07-15 | 1995-02-09 | Bayerische Motoren Werke Ag | Valve gear of an internal combustion engine |
DE19509604A1 (en) * | 1995-03-16 | 1996-09-19 | Bayerische Motoren Werke Ag | Valve train of an internal combustion engine |
EP0780547A1 (en) * | 1995-12-22 | 1997-06-25 | Siemens Aktiengesellschaft | Internal combustion engine valve lift varying device |
DE19904840A1 (en) * | 1999-02-08 | 2000-08-10 | Iav Gmbh | Valve drive for IC engines has thrust crank-like pressure lever supported on valve shaft and on intermittently rotating support body |
EP1143118A2 (en) * | 2000-04-07 | 2001-10-10 | Bayerische Motoren Werke Aktiengesellschaft | Device for varying the valve lift in an engine cylinder head |
DE10100173A1 (en) * | 2001-01-04 | 2002-07-11 | Fev Motorentech Gmbh | Fully variable mechanical valve train for a piston internal combustion engine |
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WO1993008377A1 (en) * | 1991-10-25 | 1993-04-29 | Peter Kuhn | Device for actuating the valves in an internal-combustion engine by means of rotating cams |
US5463987A (en) * | 1994-07-13 | 1995-11-07 | Cukovich; Mark S. | Variable valve timing mechanism |
DE10123186A1 (en) * | 2001-05-12 | 2002-11-14 | Bayerische Motoren Werke Ag | Valve gear device for variable lift adjustment is for gas exchange valve of internal combustion engine and has valve vai intermediary of transmission component effectively connected to roller movable around rotary axis |
-
2002
- 2002-08-02 DE DE10235400A patent/DE10235400A1/en not_active Withdrawn
-
2003
- 2003-07-03 DE DE50300363T patent/DE50300363D1/en not_active Expired - Lifetime
- 2003-07-03 EP EP03015070A patent/EP1387050B1/en not_active Expired - Lifetime
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DE4326331A1 (en) * | 1992-07-15 | 1995-02-09 | Bayerische Motoren Werke Ag | Valve gear of an internal combustion engine |
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Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
Also Published As
Publication number | Publication date |
---|---|
DE50300363D1 (en) | 2005-04-21 |
EP1387050B1 (en) | 2005-03-16 |
DE10235400A1 (en) | 2004-02-19 |
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