DE20220138U1 - Valve train with cams for variable actuation of valves for internal combustion engines - Google Patents
Valve train with cams for variable actuation of valves for internal combustion engines Download PDFInfo
- Publication number
- DE20220138U1 DE20220138U1 DE20220138U DE20220138U DE20220138U1 DE 20220138 U1 DE20220138 U1 DE 20220138U1 DE 20220138 U DE20220138 U DE 20220138U DE 20220138 U DE20220138 U DE 20220138U DE 20220138 U1 DE20220138 U1 DE 20220138U1
- Authority
- DE
- Germany
- Prior art keywords
- cylinder head
- valve
- transmission arrangement
- valve train
- cam
- 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.)
- Expired - Lifetime
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
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/18—Rocking arms or levers
- F01L1/185—Overhead end-pivot rocking arms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/20—Adjusting or compensating clearance
- F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
- F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
- F01L1/2405—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically by means of a hydraulic adjusting device located between the cylinder head and rocker arm
-
- 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
-
- 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
- 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)
Abstract
Ventiltrieb mit Nocken zur variablen Betätigung von Ventilen für Verbrennungsmotoren mit folgender Bauart,
– eine Nockenwelle (1) ist im Zylinderkopf (ZK) drehbar gelagert und weist eine feste Lage zu Ventilen (2) und deren zugeordneten Hubübertragungsanordnung (3) auf,
– in einem Zylinderkopf (ZK) angeordneten, mittels Federkraft schließenden Ventilen (2) ist jeweils eine lagefest geführte Hubübertragungsanordnung (3) zugeordnet,
– ein zur Ventilhubeinstellung in seiner Stellung veränderliches Element (4) ist im Zylinderkopf (ZK) ortfest geführt, sowie dabei um eine im Zylinderkopf (ZK) fest positionierte Schwenkachse ( A4) schwenkbar angeordnet und weist am Umfang nacheinander verlaufend eine Stützkurve (41) und eine Steuerkurve (42) auf,
– ein Zwischenglied (5) ist an dem, in seiner Stellung veränderlichen Element (4) abgestützt, jedoch dabei relativ verlagerbar geführt und steht mit einem Nocken (11) der ortsfest im Zylinderkopf (ZK) gelagerten Nockenwelle (1) sowie der dem Ventil (2) zugeordneten Hubübertragungsanordnung (3) im Eingriff,
– das...Valve train with cams for variable actuation of valves for internal combustion engines of the following type,
A camshaft (1) is rotatably mounted in the cylinder head (ZK) and has a fixed position with respect to valves (2) and their associated stroke transmission arrangement (3),
- In a cylinder head (ZK) arranged by spring force closing valves (2) is assigned a positionally guided stroke transmission arrangement (3),
- An element (4) which is variable in its position in the valve stroke is guided in the cylinder head (ZK) in a stationary manner, and is pivotably arranged about a pivot axis (A4) which is fixedly positioned in the cylinder head (ZK) and has a support curve (41) running in succession on the circumference a control curve (42),
- An intermediate member (5) is supported on the element (4), which is variable in its position, but is guided in a relatively displaceable manner and stands with a cam (11) of the camshaft (1) which is fixed in the cylinder head (ZK) and the valve ( 2) associated stroke transmission arrangement (3) is engaged,
- the...
Description
Die Erfindung betrifft Ventiltriebe mit Nocken zur variablen Betätigung von Ventilen für Verbrennungsmotoren gemäß dem Oberbegriff des 1. SchutzanspruchesThe invention relates to valve trains with cams for variable actuation of valves for Internal combustion engines according to the generic term of the 1st claim for protection
Gattungsgemäße Ventiltriebe weisen eine Nockenwelle auf, die im Zylinderkopf drehbar gelagert ist und der eine Hubübertragungsanordnung, in Form eines Kipp- oder Schwenkhebels, zugeordnet ist und welche sich vorzugsweise mit einem Spielausgleichselement am Zylinderkopf abstützt. Ein zur Ventilhubeinstellung in seiner Stellung zu verschwenkendes Element ist im Zylinderkopf ortsfest gelagert. Ein Zwischenglied ist an diesem Element abgestützt und steht weiterhin mit einem Nocken, der ortsfest im Zylinderkopf gelagerten Nockenwelle sowie der dem Ventil zugeordneten Hubübertragungsanordnung im Eingriff. Das in seiner Stellung um eine im Zylinderkopf fest positionierte Schwenkachse zu verschwenkende Element weist in Bereichen ihres Umfangens eine Stütz- und Steuerkurve auf, auf der sich das Zwischenglied mit einer sich U-förmig öffnenden Innenkontur auf der Außenkontur der Stütz- und Steuerkurve kraftschlüssig, während der Hubbewegung schwenkend abstützt.Valve drives of the generic type have a camshaft which is rotatably mounted in the cylinder head and which has a stroke transmission arrangement, in the form of a tipping or Swivel lever is assigned and which is preferably with a Backlash compensation element supported on the cylinder head. On for valve stroke adjustment element to be pivoted in its position is in the cylinder head stored stationary. An intermediate link is supported on this element and still stands with a cam, which is fixed in the cylinder head Camshaft and the stroke transmission arrangement assigned to the valve in engagement. That in its position around one in the cylinder head Positioned pivot axis element to be pivoted points in areas its scope a support and control curve on which the pontic is located with a U-shaped opening Inner contour on the outer contour the support and control curve non-positive, while supports the lifting movement pivoting.
Ungünstig sind bei der bekannten Ausführung sowohl die wirkenden Kräfte bei der Bewegungsübertragung als auch die in den kinematischen Elementen auftretenden Belastungen.Are unfavorable in the known execution both the acting forces when transferring motion as well as the loads occurring in the kinematic elements.
Der Erfindung liegt die Aufgabe zugrunde, einen Ventiltrieb zur variablen Betätigung von Ventilen der gattungsgemäßen Art hinsichtlich der Kinematik und wirkender Kräfte im Ventiltrieb zu verbessern und dabei auch kompakt auszuführen.The invention is based on the object a valve train for variable actuation of valves of the generic type to improve in terms of kinematics and acting forces in the valve train while also being compact.
Erfindungsgemäß wird dies durch einen Aufbau gemäß dem kennnzeichenden Teil des ersten Schutzanspruches erreicht.According to the invention, this is achieved through a structure according to the characteristic Part of the first claim for protection achieved.
Es ergeben sich neben günstigen kinematischen Verhältnissen im Zwischenglied Druck- und nur geringe Biegebeanspruchungen bei der Ventilbetätigung, weil in der geschlossenen Stellung des Ventils die jeweiligen Eingriffsebenen am Zwischenglied zwischen der Steuerkurve und der Hubübertragungsanordnung etwa parallel oder wenig geneigt zueinander verlaufen und die Eingriffslinien in einem Bereich liegen, der sich nahe um die Verbindungslinie zwischen der Schwenkachse und der Achse einer Rolle an der Hubübertragungsanordnung erstreckt.In addition to cheap kinematic relationships in the pontic pressure and only slight bending stresses the valve actuation, because in the closed position of the valve, the respective engagement levels on the intermediate link between the control cam and the stroke transmission arrangement run approximately parallel or slightly inclined to each other and the lines of engagement in an area that is close to the connecting line between the pivot axis and the axis of a roller on the stroke transmission arrangement extends.
Die Stützkurve für das Zwischenglied ist dabei vorteilhaft auf der dem Nocken zugewandten Hälfte des in seiner Stellung veränderlichen Elementes angeordnet. In weiteren Unteransprüchen sind vorteilhafte Ausgestaltungen genannt, die in der Beschreibung im Zusammenhang mit ihren Wirkungen erläutert werden.The support curve for the pontic is included advantageous on the cam facing half of the position variable Element arranged. Advantageous refinements are in further subclaims called, which are explained in the description in connection with their effects.
Anhand von Darstellungen werden nachfolgend Ausführungsbeispiele der Erfindung beschrieben.Based on representations are below embodiments described the invention.
Es zeigtIt shows
In
Ein in seiner Stellung veränderliches
Element
Es steht mit einem Nocken
Das in seiner Stellung veränderliche
Element
Das Zwischenglied
Die Außenkontur der Stützkurve
Zur Verminderung von Reibungsverlusten steht
sowohl eine Rolle
In
Kinematisch vorteilhaft ist die Stützkurve
Eine baulich vorteilhafte Gestaltung
ergibt sich, wenn die Abstützung
der Hubübertragungsanordnung
Vorteilhaft ist am Zwischenglied
Funktion und Bewegungen in erfindungsgemäßen EinrichtungenFunction and movements in devices according to the invention
Durch die Gestaltung und die eingestellte Winkelstellung
des Elementes
In
Bei Drehung aus dem Grundkreisbereich
gegen den Uhrzeigersinn wird die Rolle
Aus dem Vergleich der Lage des Endes
FE 5 der Feder
In
Die Eingriffslinien EL zwischen Zwischenglied
In diesem Falle verlaufen aber die
Eingriffsebenen EE am Zwischenglied
Bei dieser Ausführung ist die Stützkurve
In
- 11
- Nockenwellecamshaft
- 1111
- Nockencam
- 22
- VentilValve
- 33
- HubübertragungsanordnungHubübertragungsanordnung
- 3131
- SpielausgleichselementLash adjuster
- 3232
- Rollenhebelroller lever
- 3333
- Rollerole
- 44
- Element, in seiner Stellung veränderlich, schwenkbarElement, variable in position, swiveling
- 4141
- Stützkurvesupport curve
- 4242
- Steuerkurvecam
- 55
- Zwischengliedintermediary
- 5151
- Innenkonturinner contour
- 5252
- Außenkonturouter contour
- 5353
- Rollerole
- 5454
- Rollerole
- 5555
- Gleitstützesliding support
- 141141
- Stützkurvesupport curve
- A 4A 4
-
Schwenkachse
von
4 Swivel axis of4 - A 33A 33
-
Achse
von
33 Axis of33 - EEEE
- Eingriffsebenintervention level
- ELEL
- Eingriffslinieline of action
- FF
-
Feder,
deren Kraft an
5 angreift und gegen4 und11 anlegt.Spring whose power is on5 attacks and against4 and11 invests. - FE 5FE 5
-
Ende
der Feder
5 End of feather5 - KBKB
- KreisbogenkonturArc contour
- VLVL
- Verbindungslinieconnecting line
- ZKZK
- Zylinderkopfcylinder head
Claims (7)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20220138U DE20220138U1 (en) | 2002-12-20 | 2002-12-20 | Valve train with cams for variable actuation of valves for internal combustion engines |
US10/370,290 US6955146B2 (en) | 2000-12-11 | 2003-02-19 | System for variably actuating valves in internal combustion engines |
DE10320324A DE10320324A1 (en) | 2002-12-20 | 2003-05-06 | Valve actuating system for internal combustion engine has intermediate component supported and pivotably guided on variable position component to engage cam of camshaft and stroke-transmitting arrangement |
EP03012206A EP1375847A3 (en) | 2000-12-11 | 2003-06-06 | Variable valve drive |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20220138U DE20220138U1 (en) | 2002-12-20 | 2002-12-20 | Valve train with cams for variable actuation of valves for internal combustion engines |
Publications (1)
Publication Number | Publication Date |
---|---|
DE20220138U1 true DE20220138U1 (en) | 2004-04-29 |
Family
ID=32240662
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE20220138U Expired - Lifetime DE20220138U1 (en) | 2000-12-11 | 2002-12-20 | Valve train with cams for variable actuation of valves for internal combustion engines |
DE10320324A Pending DE10320324A1 (en) | 2002-12-20 | 2003-05-06 | Valve actuating system for internal combustion engine has intermediate component supported and pivotably guided on variable position component to engage cam of camshaft and stroke-transmitting arrangement |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10320324A Pending DE10320324A1 (en) | 2002-12-20 | 2003-05-06 | Valve actuating system for internal combustion engine has intermediate component supported and pivotably guided on variable position component to engage cam of camshaft and stroke-transmitting arrangement |
Country Status (1)
Country | Link |
---|---|
DE (2) | DE20220138U1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004011639A1 (en) * | 2004-03-10 | 2005-09-29 | Ina-Schaeffler Kg | Variable mechanical valve train control |
DE102004038473A1 (en) * | 2004-08-07 | 2006-02-23 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Valve train for charge exchange valves of internal combustion engines |
DE102005010182A1 (en) * | 2005-03-03 | 2006-09-21 | Entec Consulting Gmbh | Variable mechanical valve control for internal combustion engine has intermediate lever, which is connected to valve push rod by means of shaft, such that slide gate roller, is displaced by camshaft in slide gate |
DE102005035315A1 (en) * | 2005-07-28 | 2007-02-01 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Variable valve train for internal combustion engines |
DE102005035314A1 (en) * | 2005-07-28 | 2007-05-03 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Valve train for charge exchange valves of four-stroke internal combustion engines |
US7603973B2 (en) | 2005-03-03 | 2009-10-20 | Hydraulik-Ring Gmbh | Variable mechanical valve control for an internal combustion engine |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007016766A (en) * | 2005-06-06 | 2007-01-25 | Toyota Motor Corp | Variable valve gear |
US7748356B2 (en) | 2005-06-17 | 2010-07-06 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Valve train for internal combustion engines |
CN102061956B (en) * | 2009-05-21 | 2017-08-25 | 杨鲁川 | drive device |
AT510527B1 (en) * | 2010-09-23 | 2012-09-15 | Avl List Gmbh | FOUR-STROKE COMBUSTION ENGINE WITH A MOTOR BRAKE |
DE102014109573A1 (en) | 2014-07-09 | 2016-01-14 | Pierburg Gmbh | Mechanically controllable valve train |
-
2002
- 2002-12-20 DE DE20220138U patent/DE20220138U1/en not_active Expired - Lifetime
-
2003
- 2003-05-06 DE DE10320324A patent/DE10320324A1/en active Pending
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004011639A1 (en) * | 2004-03-10 | 2005-09-29 | Ina-Schaeffler Kg | Variable mechanical valve train control |
DE102004038473A1 (en) * | 2004-08-07 | 2006-02-23 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Valve train for charge exchange valves of internal combustion engines |
DE102004038473B4 (en) * | 2004-08-07 | 2006-08-10 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Valve train for charge exchange valves of internal combustion engines |
US7603973B2 (en) | 2005-03-03 | 2009-10-20 | Hydraulik-Ring Gmbh | Variable mechanical valve control for an internal combustion engine |
DE102005010182A1 (en) * | 2005-03-03 | 2006-09-21 | Entec Consulting Gmbh | Variable mechanical valve control for internal combustion engine has intermediate lever, which is connected to valve push rod by means of shaft, such that slide gate roller, is displaced by camshaft in slide gate |
US7624711B2 (en) | 2005-03-03 | 2009-12-01 | Hydraulik-Ring Gmbh | Variable mechanical valve control for an internal combustion engine |
DE102005010182B4 (en) * | 2005-03-03 | 2016-05-25 | Kolbenschmidt Pierburg Innovations Gmbh | Variable mechanical valve control of an internal combustion engine |
DE102005035315A1 (en) * | 2005-07-28 | 2007-02-01 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Variable valve train for internal combustion engines |
DE102005035314A1 (en) * | 2005-07-28 | 2007-05-03 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Valve train for charge exchange valves of four-stroke internal combustion engines |
DE102005035315B4 (en) * | 2005-07-28 | 2007-05-10 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Variable valve train for internal combustion engines |
US7367298B2 (en) | 2005-07-28 | 2008-05-06 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Variable valve gear for internal combustion engine |
US7412951B2 (en) | 2005-07-28 | 2008-08-19 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Valve gear for load change valves of four-stroke internal combustion engines |
DE102005035314B4 (en) * | 2005-07-28 | 2013-03-14 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Valve train for charge exchange valves of four-stroke internal combustion engines |
Also Published As
Publication number | Publication date |
---|---|
DE10320324A1 (en) | 2004-07-15 |
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Effective date: 20040603 |
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