DE10235400A1 - Cylinder head for an internal combustion engine with a variable stroke valve train - Google Patents
Cylinder head for an internal combustion engine with a variable stroke valve train Download PDFInfo
- Publication number
- DE10235400A1 DE10235400A1 DE10235400A DE10235400A DE10235400A1 DE 10235400 A1 DE10235400 A1 DE 10235400A1 DE 10235400 A DE10235400 A DE 10235400A DE 10235400 A DE10235400 A DE 10235400A DE 10235400 A1 DE10235400 A1 DE 10235400A1
- Authority
- DE
- Germany
- Prior art keywords
- backdrop
- cylinder head
- hand
- combustion engine
- internal combustion
- 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- Withdrawn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
- 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
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
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, wobei die Kulisse (5) am Zylinderkopf (1) angeordnet ist. DOLLAR A Aufgrund der vorgeschlagenen Ausgestaltung des hubvariablen Ventiltriebes wird für den hubvariablen Ventiltrieb eine höchste Steifigkeit erreicht.Cylinder head (1) for an internal combustion engine with a variable-stroke valve train (2), with a swivel lever (3), which on the one hand has a roller element (4) with an oscillation pivot point (4 ') on a slide track (5'), a slide (5) and on the other hand with a control track (6) on an intermediate element (7) to a gas exchange valve (8) without play, the swivel lever (3) for adjusting the stroke between the support points on the one hand by a cam (9) of a camshaft (9 ') against a force A spring (10) can be pivoted in a controlled manner and, on the other hand, the pivot point (4 ') can be displaced in a controlled manner by an adjusting device (11) for adjusting the lifting height parallel to the slide track (5'), the slide (5) being arranged on the cylinder head (1). DOLLAR A Due to the proposed design of the variable stroke valve train, the highest degree of rigidity is achieved for the variable valve train.
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 one Internal combustion engine with a stroke variable valve train according to the features in the preamble of claim 1.
Sie geht von der noch nicht veröffentlichten deutschen
Patentanmeldung
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 stroke variables Valve train is the backlash of the swivel 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 it is therefore the setting as possible can be rigidly integrated into the variable valve train.
Diese Aufgabe wird erfindungsgemäß durch das Merkmal im kennzeichnenden Teil des Patentanspruchs 1 gelöst.This object is achieved by the Feature in the characterizing part of claim 1 solved.
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.The configuration according to the invention leads to a high rigidity of the entire valve train arrangement. Furthermore the arrangement of the backdrop directly on the cylinder head offers favorable installation conditions as well as high mechanical processing accuracy for the whole Valve train in 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 of installing the backdrop on the cylinder head. The variant of a detachable connection, e.g. a screw connection, especially manufacturing advantages in Regarding costs and simplicity in the production of the overall system. In contrast, offers the variant of pouring the backdrop in the cylinder head an even higher manufacturing precision, because the finishing is done after pouring.
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 further reduce the manufacturing costs in an advantageous manner. This measure reduces the number of individual components as well as assembly on or pouring into the cylinder head.
Die Ausgestaltung gemäß Patentanspruch 5 reduziert ebenfalls die Herstellkosten bzw. den Montageaufwand und somit die Montagekosten.The design according to claim 5 also reduces manufacturing costs and assembly costs and thus the assembly 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 good wear properties when operating the variable stroke valve train, because the backdrop from a tougher one Material is manufactured as the cylinder head. Furthermore is the production as a sintered component inexpensive and in terms of selected Material for optimal wear resistance interpretations.
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 execution according to claim 7 omitted separate lubricant lines, which reduces the manufacturing costs of the Cylinder head can be significantly reduced again. Furthermore construction space is saved due to the highly integrated design as well the weight of the cylinder head is reduced.
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 a configuration according to claim 8 takes over the backdrop not only the task of guiding the swivel lever but also also the task of axially guiding the pivot lever. Further separate axial guide elements can thus omitted.
Im Folgenden ist die Erfindung anhand eines bevorzugten Ausführungsbeispieles in zwei Figuren näher erläutert.The invention is described below of a preferred embodiment closer in two figures explained.
Für
die selben Bauteile in
Um eine möglichst große Steifigkeit im hubvariablen
Ventiltrieb
Im vorliegenden Ausführungsbeispiel
ist die Kulisse
Ferner ist es möglich mehrere Kulissen
In weiteren Ausführungsvarianten können direkt
in die Kulissen
- 11
- Zylinderkopfcylinder head
- 22
- Hubvariabler VentiltriebHubvariabler valve train
- 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)
Priority Applications (3)
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 |
DE50300363T DE50300363D1 (en) | 2002-08-02 | 2003-07-03 | Cylinder head for an internal combustion engine with a variable-stroke valve drive |
EP03015070A EP1387050B1 (en) | 2002-08-02 | 2003-07-03 | Cylinder head for an internal combustion engine with variable lift valve drive |
Applications Claiming Priority (1)
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 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10235400A1 true DE10235400A1 (en) | 2004-02-19 |
Family
ID=30010566
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10235400A Withdrawn DE10235400A1 (en) | 2002-08-02 | 2002-08-02 | Cylinder head for an internal combustion engine with a variable stroke valve train |
DE50300363T Expired - Lifetime DE50300363D1 (en) | 2002-08-02 | 2003-07-03 | Cylinder head for an internal combustion engine with a variable-stroke valve drive |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE50300363T Expired - Lifetime DE50300363D1 (en) | 2002-08-02 | 2003-07-03 | Cylinder head for an internal combustion engine with a variable-stroke valve drive |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1387050B1 (en) |
DE (2) | DE10235400A1 (en) |
Cited By (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 |
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 |
DE102008059992B4 (en) * | 2008-01-22 | 2017-04-06 | Hyundai Motor Co. | Continuously variable valve lift device |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE502006008907D1 (en) | 2005-03-03 | 2011-03-31 | Hydraulik Ring Gmbh | VARIABLE MECHANICAL VALVE CONTROL OF AN INTERNAL COMBUSTION ENGINE |
DE102006018510A1 (en) * | 2006-04-21 | 2007-10-25 | Schaeffler Kg | Swinging arm for stroke-variable valve gear of internal combustion engine, has stroke area, where maximum width of stroke area is formed larger or equal to maximum width of idle-stroke area and larger than minimum width of idle-stroke area |
CN103925029B (en) * | 2013-01-15 | 2016-04-06 | 长城汽车股份有限公司 | Variable valve lift driving device |
DE102013106646A1 (en) | 2013-06-25 | 2015-01-08 | Pierburg Gmbh | Spring arrangement for a variable valve train of an internal combustion engine |
DE102014100748B4 (en) * | 2014-01-23 | 2017-04-27 | Pierburg Gmbh | Transmission arrangement for a mechanically controllable valve train and mechanically controllable valve train |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
WO1996002738A1 (en) * | 1994-07-13 | 1996-02-01 | Cukovich Mark S | Variable valve timing mechanism |
DE10100173A1 (en) * | 2001-01-04 | 2002-07-11 | Fev Motorentech Gmbh | Fully variable mechanical valve train for a piston internal combustion engine |
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 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
DE19548389A1 (en) * | 1995-12-22 | 1997-06-26 | Siemens Ag | Adjustment device for the stroke of a gas exchange valve of an internal combustion engine |
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 |
DE10017441A1 (en) * | 2000-04-07 | 2001-10-11 | Bayerische Motoren Werke Ag | Device for stroke adjustment of a gas exchange valve in the cylinder head of an internal combustion engine |
-
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
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
WO1996002738A1 (en) * | 1994-07-13 | 1996-02-01 | Cukovich Mark S | Variable valve timing mechanism |
DE10100173A1 (en) * | 2001-01-04 | 2002-07-11 | Fev Motorentech Gmbh | Fully variable mechanical valve train for a piston internal combustion engine |
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 |
Non-Patent Citations (2)
Title |
---|
BECKER,Walter,u.a.:Fertigungstechnik Metall, VEB-Verlag Technik, Berlin, 1974, 3.Aufl., Wissensspeicher für die Berufsbildung, S.20-21, S.37-39 * |
BECKER,Walter,u.a.:Fertigungstechnik Metall, VEB-Verlag Technik, Berlin, 1974, 3.Aufl., Wissensspeicher für die Berufsbildung, S.20-21, S.37-39; |
Cited By (6)
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 |
US7225773B2 (en) | 2004-02-20 | 2007-06-05 | Bayerische Motoren Werke Aktiengesellschaft | Variable stroke valve drive for an internal combustion engine |
DE102004021646A1 (en) * | 2004-05-03 | 2005-12-01 | Bayerische Motoren Werke Ag | Adjusting shaft of a variable-stroke valve drive |
DE102008059992B4 (en) * | 2008-01-22 | 2017-04-06 | Hyundai Motor Co. | Continuously variable valve lift device |
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 |
EP2568131A1 (en) | 2011-09-07 | 2013-03-13 | Bayerische Motoren Werke Aktiengesellschaft | Splitter for a variable stroke valve gear |
Also Published As
Publication number | Publication date |
---|---|
EP1387050A1 (en) | 2004-02-04 |
EP1387050B1 (en) | 2005-03-16 |
DE50300363D1 (en) | 2005-04-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8139 | Disposal/non-payment of the annual fee |