DE102006022481A1 - Cylinder head for an internal combustion engine with a variable-stroke valve drive - Google Patents
Cylinder head for an internal combustion engine with a variable-stroke valve drive Download PDFInfo
- Publication number
- DE102006022481A1 DE102006022481A1 DE200610022481 DE102006022481A DE102006022481A1 DE 102006022481 A1 DE102006022481 A1 DE 102006022481A1 DE 200610022481 DE200610022481 DE 200610022481 DE 102006022481 A DE102006022481 A DE 102006022481A DE 102006022481 A1 DE102006022481 A1 DE 102006022481A1
- Authority
- DE
- Germany
- Prior art keywords
- cylinder head
- variable
- hand
- actuating element
- adjusting device
- 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.)
- Withdrawn
Links
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
-
- 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
- F01L13/0015—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
- F01L2820/00—Details on specific features characterising valve gear arrangements
- F01L2820/03—Auxiliary actuators
- F01L2820/032—Electric motors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Zylinderkopf (1) für eine Brennkraftmaschine mit zumindest zwei Zylindern und mit einem hubvariablen Ventiltrieb (2) mit einem Schwenkhebel (3), der einerseits mit einem Rollenelement (4) mit einem Schwingdrehpunkt auf einer Kulissenbahn einer Kulisse (5) und andererseits mit einer Steuerbahn (6) auf ein 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 von einer Verstelleinrichtung (11) zur Hubhöhenverstellung parallel zur Kulissenbahn (5') gesteuert verschiebbar ist, wobei die Verstelleinrichtung (11) von einem geodätisch über dem Ventiltrieb angeordneten Stellelement (12) in ihrer Lage veränderbar ist, wobei das Stellelement (12) an dem Zylinderkopf (1) angeordnet ist, wobei eine Längsachse (12') des Stellelementes (12) weitgehend in Richtung einer Zylinderachse ausgerichtet ist. Die vorgeschlagene Ausgestaltung erlaubt eine äußerst kompakte und steife Anordnung des hubvariablen Ventiltriebs.Cylinder head (1) for an internal combustion engine with at least two cylinders and with a variable-stroke valve drive (2) with a pivot lever (3), on the one hand with a roller element (4) with a swing fulcrum on a link path 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 of a spring (10 Controlled pivotally and on the other hand, the oscillating fulcrum of an adjusting device (11) for lifting height parallel to the slide track (5 ') is controlled displaced, wherein the adjusting device (11) of a geodetically arranged over the valve gear actuator (12) is variable in position, said the adjusting element (12) on the cylinder head (1) is arranged, wherein a longitudinal axis (12 ') of the adjusting element (12) weitgeh end is aligned in the direction of a cylinder axis. The proposed embodiment allows an extremely compact and rigid arrangement of the variable-stroke valve drive.
Description
Die Erfindung betrifft einen Zylinderkopf für eine Brennkraftmaschine mit einem hubvariablen Ventiltrieb mit den Merkmalen aus dem Oberbegriff des Patentanspruches 1.The The invention relates to a cylinder head for an internal combustion engine with a variable stroke valve train with the features of the preamble of Claim 1.
Die
Erfindung geht von dem aktuellen BMW Reihensechszylinder-Ottomotor
mit Magnesium-Kurbelgehäuse
und Valvetronic aus. Valvetronic ist hierbei die Bezeichnung für einen
hubvariablen Ventiltrieb, wie er beispielsweise in der deutschen
Offenlegungsschrift
Auch wenn die Serienausgestaltung prinzipiell keinen Nachteil aufweist, ist es aus Packagegründen wünschenswert, die Baugröße eines gattungsgemäßen Ventiltriebes zu verringern.Also if the series design has no disadvantage in principle, it is for package reasons desirable, the size of a generic valve train to reduce.
Diese Aufgabe wird erfindungsgemäß durch die Merkmale im kennzeichnenden Teil des Patentanspruches 1 gelöst.These The object is achieved by the Characteristics solved in the characterizing part of claim 1.
In vorteilhafter Weise wird durch die vorgeschlagene Ausgestaltung nicht nur die Baugröße des Zylinderkopfes reduziert, sondern darüber hinaus die Steifigkeit der Anbindung des Stellelementes an die Verstelleinrichtung verbessert.In Advantageously, by the proposed embodiment not just the size of the cylinder head reduced, but about it In addition, the rigidity of the connection of the actuating element to the adjusting device improved.
Durch die Ausgestaltung gemäß Patentanspruch 2 wird die Steifigkeit des gesamten Verstellantriebes, bestehend aus dem Stellelement und der Verstelleinrichtung, nochmals verbessert.By the embodiment according to claim 2, the rigidity of the entire adjustment, consisting from the actuator and the adjustment, again improved.
In bevorzugter Weise wird die Verstelleinrichtung gemäß Patentanspruch 3 entweder durch eine Linearbewegung oder eine Drehbewegung des Stellelementes in der Lage verändert.In Preferably, the adjusting device according to claim 3 either by a linear movement or a rotational movement of Stellelementes able changed.
Die Ausgestaltung gemäß Patentanspruch 4 ist ein in der Praxis bewährtes Stellelement.The Embodiment according to claim 4 is a proven in practice Actuator.
Bei Verwendung eines bürstenlosen Elektromotors gemäß Patentanspruch 5 muss keine öldichte Abdichtung der Stator-/Rotoreinheit vorgesehen werden, da diese auch direkt im Ölnebel läuft. Damit entfällt der Reibungsnachteil eines Wellendichtringes.at Using a brushless Electric motor according to claim 5 does not need oil-tight seal the stator / rotor unit are provided, as these also directly in the oil mist running. This is eliminated the friction disadvantage of a shaft seal.
Um Längenänderungen aufgrund von Temperaturänderungen im Verstellantrieb möglichst gering zu halten, kann das Stellelement gemäß Patentanspruch 6 von einem Schmiermittel oder einem Kühlmittel der Brennkraftmaschine temperiert werden.Around changes in length due to temperature changes in the adjustment as possible To keep low, the actuator according to claim 6 of a Lubricant or a coolant the internal combustion engine to be tempered.
Im Folgenden ist die Erfindung anhand eines bevorzugten Ausführungsbeispieles in einer einzigen Figur näher erläutert.in the The invention is based on a preferred embodiment in a single figure closer explained.
Im
Folgenden ist die Funktionsweise des hubvariablen Ventiltriebs
Der hubvariable Ventiltrieb
The variable stroke valve train
Zwischen
der Steuerbahn
Zur
Verstellung der Verstelleinrichtung
In
einer weiteren Ausführungsform
kann ein Abschnitt des Stellelementes
Auch
ist es in weiteren Ausführungsformen möglich, das
Stellelement
Die
Anordnung des Stellelementes
- 11
- Zylinderkopfcylinder head
- 22
- hubvariabler Ventiltriebhubvariabler valve train
- 2'2 '
- Ventiltriebvalve train
- 33
- Schwenkhebelpivoting lever
- 44
- Rollenelementroller element
- 55
- Kulissescenery
- 66
- Steuerbahncontrol track
- 77
- Zwischenelementintermediate element
- 88th
- GaswechselventilGas exchange valve
- 99
- Nockencam
- 9'9 '
- Nockenwellecamshaft
- 1010
- Federfeather
- 1111
- Verstelleinrichtungadjustment
- 1212
- Stellelementactuator
- 12'12 '
- Längsachselongitudinal axis
- 1313
- Kurvenscheibecam
- 1414
- Gewindeschneckethreaded screw
- 1515
- Zündeinrichtungignition device
- 1616
- SpielausgleichselementLash adjuster
Claims (7)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200610022481 DE102006022481A1 (en) | 2006-05-13 | 2006-05-13 | Cylinder head for an internal combustion engine with a variable-stroke valve drive |
EP20070006942 EP1854967B1 (en) | 2006-05-13 | 2007-04-03 | Cylinder head for a combustion engine with a variable stroke valve operating mechanism |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200610022481 DE102006022481A1 (en) | 2006-05-13 | 2006-05-13 | Cylinder head for an internal combustion engine with a variable-stroke valve drive |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102006022481A1 true DE102006022481A1 (en) | 2007-11-15 |
Family
ID=38255016
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200610022481 Withdrawn DE102006022481A1 (en) | 2006-05-13 | 2006-05-13 | Cylinder head for an internal combustion engine with a variable-stroke valve drive |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1854967B1 (en) |
DE (1) | DE102006022481A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011082226A1 (en) * | 2011-09-07 | 2013-03-07 | Bayerische Motoren Werke Aktiengesellschaft | Double leg spring for a variable-stroke valve drive in a cylinder head of an internal combustion engine |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008057135B4 (en) * | 2008-11-13 | 2020-11-12 | Audi Ag | Internal combustion engine with a valve train having a roller rocker arm |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11264310A (en) * | 1998-03-18 | 1999-09-28 | Honda Motor Co Ltd | Valve system for internal combustion engine |
DE19825308A1 (en) * | 1998-06-05 | 1999-12-09 | Bayerische Motoren Werke Ag | Variable valve train for an internal combustion engine |
JP2003003812A (en) * | 2001-06-19 | 2003-01-08 | Suzuki Motor Corp | Valve mechanism and internal combustion engine equipped with the same |
DE10211998A1 (en) * | 2002-03-18 | 2003-10-02 | Ina Schaeffler Kg | Device for controlling the cylinder charge of a spark ignition internal combustion engine |
JP2004353643A (en) * | 2003-05-26 | 2004-12-16 | Zenji Ishikawa | Valve mechanism of four-cycle internal combustion engine |
JP2005042642A (en) * | 2003-07-24 | 2005-02-17 | Honda Motor Co Ltd | Engine valve system |
EP1557540A1 (en) * | 2004-01-20 | 2005-07-27 | HONDA MOTOR CO., Ltd. | Valve system for internal combustion engine |
FR2872542A1 (en) * | 2004-07-05 | 2006-01-06 | Renault Sas | Variable actuation device for valve of internal combustion engine, has lever position adjustment units configured for shifting lever angularly around cam axis, where lever transmits movement of cam to valve |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10100173A1 (en) * | 2001-01-04 | 2002-07-11 | Fev Motorentech Gmbh | Fully variable mechanical valve train for a piston internal combustion engine |
DE10206465A1 (en) * | 2002-02-16 | 2003-08-28 | Mahle Ventiltrieb Gmbh | Control unit for a gas exchange valve in a combustion engine with a multi-component drive, has curved part with separate sectional effects |
DE10312959B4 (en) | 2003-03-24 | 2006-10-05 | Thyssenkrupp Automotive Ag | Device for the variable actuation of gas exchange valves of internal combustion engines |
JP4238203B2 (en) | 2004-01-30 | 2009-03-18 | 本田技研工業株式会社 | engine |
-
2006
- 2006-05-13 DE DE200610022481 patent/DE102006022481A1/en not_active Withdrawn
-
2007
- 2007-04-03 EP EP20070006942 patent/EP1854967B1/en active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11264310A (en) * | 1998-03-18 | 1999-09-28 | Honda Motor Co Ltd | Valve system for internal combustion engine |
DE19825308A1 (en) * | 1998-06-05 | 1999-12-09 | Bayerische Motoren Werke Ag | Variable valve train for an internal combustion engine |
JP2003003812A (en) * | 2001-06-19 | 2003-01-08 | Suzuki Motor Corp | Valve mechanism and internal combustion engine equipped with the same |
DE10211998A1 (en) * | 2002-03-18 | 2003-10-02 | Ina Schaeffler Kg | Device for controlling the cylinder charge of a spark ignition internal combustion engine |
JP2004353643A (en) * | 2003-05-26 | 2004-12-16 | Zenji Ishikawa | Valve mechanism of four-cycle internal combustion engine |
JP2005042642A (en) * | 2003-07-24 | 2005-02-17 | Honda Motor Co Ltd | Engine valve system |
EP1557540A1 (en) * | 2004-01-20 | 2005-07-27 | HONDA MOTOR CO., Ltd. | Valve system for internal combustion engine |
FR2872542A1 (en) * | 2004-07-05 | 2006-01-06 | Renault Sas | Variable actuation device for valve of internal combustion engine, has lever position adjustment units configured for shifting lever angularly around cam axis, where lever transmits movement of cam to valve |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011082226A1 (en) * | 2011-09-07 | 2013-03-07 | Bayerische Motoren Werke Aktiengesellschaft | Double leg spring for a variable-stroke valve drive in a cylinder head of an internal combustion engine |
Also Published As
Publication number | Publication date |
---|---|
EP1854967B1 (en) | 2012-08-15 |
EP1854967A3 (en) | 2010-03-24 |
EP1854967A2 (en) | 2007-11-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
R005 | Application deemed withdrawn due to failure to request examination |
Effective date: 20130514 |