EP1847690B1 - Swing arm for a variable stroke valve gear - Google Patents
Swing arm for a variable stroke valve gear Download PDFInfo
- Publication number
- EP1847690B1 EP1847690B1 EP07105922A EP07105922A EP1847690B1 EP 1847690 B1 EP1847690 B1 EP 1847690B1 EP 07105922 A EP07105922 A EP 07105922A EP 07105922 A EP07105922 A EP 07105922A EP 1847690 B1 EP1847690 B1 EP 1847690B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- face
- swing arm
- stroke
- end portion
- valve
- 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.)
- Not-in-force
Links
- 238000002485 combustion reaction Methods 0.000 claims description 8
- 238000005452 bending Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
-
- 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
- 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
- F01L2301/00—Using particular materials
-
- 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
Definitions
- the invention relates to a rocker arm for a variable-stroke valve drive of an internal combustion engine, which is produced in a stamping and bending process of sheet metal and has the following features: Front side of a first end portion is a convexly cylindrical and concentric about a swing axis extending support surface arranged for supporting the rocker arm on a in the internal combustion engine circular arc extending link track and tapping an eccentric adjustment, through which eccentric the position of the swing axis is set on the slide track for varying the valve lift, the front side of a second end portion is rigidly connected to the rocker arm, a Leerhubkurve and an adjoining , A Hubkurve having Hubübertragungs phenomenon arranged for a valve lever and in a central portion is a Nockenanlauf phenomenon.
- rocker arm is considered from the considered generic DE 102 35 402 A1 out.
- the rocker arm proposed there is supported as an adjustable transmission element of the variable-stroke valve drive with its first end portion on a stationary in the engine stationary, arcuate slide track and operated with the running at the second end Hub Hubungsungs founded a drag lever, the his- a gas exchange valve acted upon.
- the opening profile of the gas exchange valve is variably adjustable by the displaceable on the slide track by means of an adjustment in the form of an eccentric swing axis of the support surface in conjunction with the Hubübertragungs tone, which is composed of a Leerhubkurve and a lift curve, a Nockenanlauf phenomenon acting cam lift in a variable pivoting movement of the finger lever.
- both the support surface and the cam contact surface are each formed as a roller mounted on a rocker arm mounted in the rocker arm.
- the invention is therefore an object of the invention to avoid these disadvantages and thus to provide a rocker arm, which is both high precision corresponding lowest, for the opening history of the gas exchange valve relevant component tolerances as well as inexpensive to produce and beyond a low mass effect unfolds.
- the support surface is designed as a sliding surface rigidly connected to the rocker arm, which extends on a cylinder shell produced by means of the stamping and bending process and opened to the second end portion.
- a moderate friction disadvantage of the entire valve drive friction which can be minimized by suitable friction and wear-reducing coatings of the sliding surfaces, is overcompensated by the fact that the precision requirements for the rocker arm due to the substitution of a bearing with additional tolerances roller bearing contact surface thanks to a rigid sliding surface, considerably less expensive and, thanks to the reduced component complexity, also significantly less expensive to fulfill.
- the weight of the rocker arm and thus its mass effect is positively influenced, since the material cost for a rigid sliding surface naturally limited to their contact area relative to their contact partners and their connection to the rocker arm.
- the rocker arm is to be made as a one-piece sheet metal forming part, both the support surface and the cam contact surface are formed as rigidly connected to the rocker sliding surfaces.
- both the support surface and the cam contact surface are formed as rigidly connected to the rocker sliding surfaces.
- a first embodiment of a rocker arm 1a according to the invention for a variable-stroke valve drive for throttle-free load control of an internal combustion engine is disclosed.
- the oscillating lever 1a produced in a stamping and bending process of sheet metal material has two spaced side walls 2, which are connected to one another at a first end section 3 via a cylindrical shell 4 and at a second end section 5 via an end wall 6.
- a Hubübertragungs character 10 for a valve lever which is usually designed as mounted on a support roller roller follower. This transmits the of a lifting cam 11, which adjoins the Hubübertragungs character 10 to a Leerhubkurve 12, predetermined stroke movement of oscillating about the swing axis 8 oscillating lever 1a on a gas exchange valve of the internal combustion engine.
- the oscillating lever 1a is acted upon in a central section 13 via a cam contact surface 14 by a cam of a camshaft of the internal combustion engine, the cam abutment surface 14 in this exemplary embodiment being designed as a roller 16 sliding or roller-mounted on a bolt connecting the side walls 2 is.
- FIG. 3 A second embodiment of a rocker arm 1b according to the invention is shown in FIG. 3 shown.
- This oscillating lever 1 b is likewise a component produced in a stamping and bending process from sheet metal, but in this case in one piece.
- the rocker arm 1b is different relative to the rocking lever 1a characterized in that both the support surface 9 and on a side wall 2 connecting the transverse web 17 extending cam contact surface 14 are formed as rigid sliding surfaces 7 and 18 respectively
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)
Description
Die Erfindung betrifft einen Schwinghebel für einen hubvariablen Ventiltrieb einer Brennkraftmaschine, welcher in einem Stanz-Biegeprozess aus Blechwerkstoff hergestellt ist und folgende Merkmale aufweist: Stirnseitig eines ersten Endabschnitts ist eine konvex zylindrisch ausgebildete und konzentrisch um eine Schwingachse verlaufende Abstützfläche angeordnet zur Abstützung des Schwinghebels an einer in der Brennkraftmaschine kreisbogenförmig verlaufenden Kulissenbahn und zum Abgriff eines Exzenters einer Verstelleinrichtung, durch welchen Exzenter die Position der Schwingachse auf der Kulissenbahn zur Variation des Ventilhubs festgelegt ist, stirnseitig eines zweiten Endabschnitts ist eine mit dem Schwinghebel starr verbundene, eine Leerhubkurve und eine sich daran anschließende, eine Hubkurve aufweisende Hubübertragungsfläche für einen Ventilhebel angeordnet und in einem Mittelabschnitt befindet sich eine Nockenanlauffläche.The invention relates to a rocker arm for a variable-stroke valve drive of an internal combustion engine, which is produced in a stamping and bending process of sheet metal and has the following features: Front side of a first end portion is a convexly cylindrical and concentric about a swing axis extending support surface arranged for supporting the rocker arm on a in the internal combustion engine circular arc extending link track and tapping an eccentric adjustment, through which eccentric the position of the swing axis is set on the slide track for varying the valve lift, the front side of a second end portion is rigidly connected to the rocker arm, a Leerhubkurve and an adjoining , A Hubkurve having Hubübertragungsfläche arranged for a valve lever and in a central portion is a Nockenanlauffläche.
Ein derartiger Schwinghebel geht aus der als gattungsbildend betrachteten
Wie es in der ebenfalls gattungsgemäßen
Ein weiterer Nachteil ergibt sich aus dem höheren Gewicht des mit den Wälzlagerungen versehenen Schwinghebels, dessen Massenwirkung von einem zusätzlich zur Ventilfeder vorzusehenden Federmittel abgestützt werden muss. Insofern können die sich hieraus ergebenden Reaktionskräfte zu einer beträchtlichen Aufhebung der ursprünglich durch die Wälzlagerung erzielten Reibungsvorteile führen.A further disadvantage arises from the higher weight of the rocker arm provided with the roller bearings, the mass action of which must be supported by a spring means to be provided in addition to the valve spring. In this respect, the resulting reaction forces can lead to a significant cancellation of the initial friction achieved by the rolling bearing.
Der Erfindung liegt daher die Aufgabe zugrunde, diese geschilderten Nachteile zu vermeiden und somit einen Schwinghebel zu schaffen, der sowohl hochpräzise entsprechend geringster, für den Öffnungsverlauf des Gaswechselventils maßgeblicher Bauteiltoleranzen als auch kostengünstig herstellbar ist und darüber hinaus eine geringe Massenwirkung entfaltet.The invention is therefore an object of the invention to avoid these disadvantages and thus to provide a rocker arm, which is both high precision corresponding lowest, for the opening history of the gas exchange valve relevant component tolerances as well as inexpensive to produce and beyond a low mass effect unfolds.
Erfindungsgemäß wird diese Aufgabe dadurch gelöst, dass die Abstützfläche als mit dem Schwinghebel starr verbundene Gleitfläche ausgebildet ist, die auf einer mittels des Stanz-Biegeprozesses hergestellten und zum zweiten Endabschnitt hin geöffneten Zylinderschale verläuft. Ein sich dabei gegenüber den vorgenannten Wälzkontakten einstellender moderater Reibungsnachteil der gesamten Ventiltriebsreibung, welcher überdies durch geeignete reibungs - und verschleißreduzierende Beschichtungen der Gleitflächen minimiert werden kann, wird dadurch überkompensiert, dass sich die Präzisionsanforderungen an den Schwinghebels aufgrund der Substitution einer mit zusätzlichen Toleranzen behafteten wälzgelagerten Kontaktfläche durch eine starre Gleitfläche erheblich aufwandsärmer und dank der reduzierten Bauteilkomplexität auch deutlich kostengünstiger erfüllen lassen. Darüber hinaus wird auch das Gewicht des Schwinghebels und somit dessen Massenwirkung positiv beeinflusst, da sich der Materialaufwand für eine starre Gleitfläche naturgemäß auf deren Kontaktbereich gegenüber ihrem Kontaktpartner und auf deren Anbindung an den Schwinghebel beschränkt.According to the invention, this object is achieved in that the support surface is designed as a sliding surface rigidly connected to the rocker arm, which extends on a cylinder shell produced by means of the stamping and bending process and opened to the second end portion. A moderate friction disadvantage of the entire valve drive friction, which can be minimized by suitable friction and wear-reducing coatings of the sliding surfaces, is overcompensated by the fact that the precision requirements for the rocker arm due to the substitution of a bearing with additional tolerances roller bearing contact surface thanks to a rigid sliding surface, considerably less expensive and, thanks to the reduced component complexity, also significantly less expensive to fulfill. About that In addition, the weight of the rocker arm and thus its mass effect is positively influenced, since the material cost for a rigid sliding surface naturally limited to their contact area relative to their contact partners and their connection to the rocker arm.
In einer hinsichtlich seiner Herstellkosten und seines Gewichts besonders bevorzugten Weiterbildung der Erfindung soll der Schwinghebel als einteiliges Blechumformteil hergestellt sein, wobei sowohl die Abstützfläche als auch die Nockenanlauffläche als mit dem Schwinghebel starr verbundene Gleitflächen ausgebildet sind. Zugunsten seiner Formsteifigkeit soll der Schwinghebel weiterhin zwei beabstandete Seitenwände aufweisen, die am ersten Endabschnitt über die Zylinderschale, am zweiten Ensabschnitt über eine die Hubübertragungsfläche bildende Stirnwand und im Mittelabschnitt über einen die Nockenanlauffläche bildenden Quersteg miteinander verbunden sind. Diese abwechselnd kasten- und U-profilförmige Ausgestaltung des überdies aufgrund der fehlenden Wälzlager vergleichsweise schmal bauenden Schwinghebels dient in hohem Maße zu dessen Versteifung, so dass insbesondere auch der Herstellungsaufwand für den im zitierten Stand der Technik vorgeschlagenen Versteifungsbügel zwischen den Seitenwänden entfallen kann.In a particularly advantageous in terms of its manufacturing costs and its weight of the invention, the rocker arm is to be made as a one-piece sheet metal forming part, both the support surface and the cam contact surface are formed as rigidly connected to the rocker sliding surfaces. In favor of its dimensional stability of the rocker arm should continue to have two spaced side walls, which are connected to each other at the first end portion of the cylinder shell, the second Ens section via the Hubübertragungsfläche forming end wall and in the middle section via a cam contact surface forming crosspiece. This alternately box- and U-shaped profile of the addition due to the lack of rolling bearings comparatively narrow-built rocker arm is used to a great extent to its stiffening, so that in particular the production cost of the proposed in the cited prior art stiffening bracket between the side walls can be omitted.
Weitere Merkmale der Erfindung ergeben sich aus der nachfolgenden Beschreibung und aus den Zeichnungen, in denen Ausführungsbeispiele der Erfindung vereinfacht dargestellt sind. Sofern nicht anders aufgeführt, sind dabei funktionsgleiche Merkmale mit gleichen Bezugszeichen versehen. Es zeigen:
- Figur 1
- ein erstes Ausführungsbeispiel eines Schwinghebels in perspektivischer Darstellung;
Figur 2- den Schwinghebel gemäß
Figur 1 in der Seitenansicht und - Figur 3
- ein zweites Ausführungsbeispiel eines Schwinghebels in perspektivischer Darstellung.
- FIG. 1
- a first embodiment of a rocker arm in perspective view;
- FIG. 2
- according to the rocker arm
FIG. 1 in the side view and - FIG. 3
- A second embodiment of a rocker arm in perspective view.
In den
Auf der Außenseite der Stirnwand 6 verläuft eine Hubübertragungsfläche 10 für einen Ventilhebel, der üblicherweise als auf einem Abstützelement gelagerter Rollenschlepphebel ausgebildet ist. Dieser überträgt die von einer Hubkurve 11, die sich auf der Hubübertragungsfläche 10 an eine Leerhubkurve 12 anschließt, vorgegebene Hubbewegung des um die Schwingachse 8 pendelnden Schwinghebels 1a auf ein Gaswechselventil der Brennkraftmaschine.On the outside of the
Ferner ist der Schwinghebel 1a in einem Mittelabschnitt 13 über eine Nockenanlauffläche 14 von einem Nocken einer - hier nicht dargestellten - Nockenwelle der Brennkraftmaschine beaufschlagt, wobei die Nockenanlauffläche 14 in diesem Ausführungsbeispiel als auf einem die Seitenwände 2 verbindenden Bolzen 15 gleit- oder wälzgelagerte Rolle 16 ausgebildet ist.Furthermore, the oscillating
Ein zweites Ausführungsbeispiel eines erfindungsgemäßen Schwinghebels 1b ist in
- 1a, b1a, b
- Schwinghebelrocker
- 22
- SeitenwandSide wall
- 33
- erster Endabschnittfirst end section
- 44
- Zylinderschalecylindrical shell
- 55
- zweiter Endabschnittsecond end section
- 66
- Stirnwandbulkhead
- 77
- Gleitflächesliding surface
- 88th
- Schwingachseswing axle
- 99
- Abstützflächesupporting
- 1010
- HubübertragungsflächeHubübertragungsfläche
- 1111
- Hubkurvestroke curve
- 1212
- LeerhubkurveLeerhubkurve
- 1313
- Mittelabschnittmidsection
- 1414
- NockenanlaufflächeCam contacting surface
- 1515
- Bolzenbolt
- 1616
- Rollerole
- 1717
- Querstegcrosspiece
- 1818
- Gleitflächesliding surface
Claims (3)
- Swing arm for a variable stroke valve gear of an internal combustion engine, produced in a stamping/bending process from sheet metal material and having:- on the end face of a first end portion (3), a convexly cylindrically designed supporting face (9), running concentrically about a swing axis (8), for supporting the swing arm (1a, 1b) on a slotted track running in an arc of a circle in the internal combustion engine and for picking off an eccentric of an adjusting device, by means of which eccentric the position of the swing axis (8) on the slotted track is fixed for the purpose of varying the valve stroke,- on the end face of a second end portion (5), a stroke transmission face (10) for a valve lever, which stroke transmission face is rigidly connected to the swing arm (1a, 1b) and has an idling-stroke curve (12) and a stroke curve (11) adjoining the latter, and- in a middle portion (13), a cam run-on face (14), characterized in that the supporting face (9) is designed as a sliding face (7) which is rigidly connected to the swing arm (1a, 1b) and which runs on a cylinder shell (4) produced by means of the stamping/bending process and open towards the second end portion (5).
- Swing arm according to Claim 1, characterized in that both the supporting face (9) and the cam run-on face (14) are designed as sliding faces (7, 18) rigidly connected to the swing arm (1b), the swing arm (1b) being produced as a one-part sheet metal preform.
- Swing arm according to Claim 2, characterized in that the swing arm (1b) has two spaced-apart side walls (2) which are connected to one another at the first end portion (3) via the cylinder shell (4), at the second end portion (5) via an end wall (6) forming the stroke transmission face (10) and in the middle portion (13) via a crosspiece (17) forming the cam run-on face (14).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006018511A DE102006018511A1 (en) | 2006-04-21 | 2006-04-21 | Rocker arm for a variable-stroke valve train |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1847690A2 EP1847690A2 (en) | 2007-10-24 |
EP1847690A3 EP1847690A3 (en) | 2010-01-27 |
EP1847690B1 true EP1847690B1 (en) | 2013-01-16 |
Family
ID=38255020
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07105922A Not-in-force EP1847690B1 (en) | 2006-04-21 | 2007-04-11 | Swing arm for a variable stroke valve gear |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1847690B1 (en) |
CN (1) | CN101059088A (en) |
DE (1) | DE102006018511A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011003898B4 (en) | 2011-02-10 | 2021-09-09 | Schaeffler Technologies AG & Co. KG | Intermediate lever |
CN103147818B (en) * | 2013-02-28 | 2015-05-06 | 长城汽车股份有限公司 | Drive device with variable valve lift, engine and vehicle |
CN103161538B (en) * | 2013-02-28 | 2015-04-22 | 长城汽车股份有限公司 | Variable valve lift driving device rocker mechanism used for engine |
DE102013217298A1 (en) | 2013-08-30 | 2015-03-05 | Schaeffler Technologies Gmbh & Co. Kg | Rocker arm for a valve train of an internal combustion engine of a vehicle and method for producing a rocker arm |
DE102016220397A1 (en) * | 2016-10-18 | 2017-08-10 | Schaeffler Technologies AG & Co. KG | Intermediate lever of a variable valve train |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1178655A (en) * | 1956-07-06 | 1959-05-13 | Austin Motor Co Ltd | Mechanism for controlling overhead valves of internal combustion engines |
DE1845656U (en) * | 1959-02-03 | 1962-01-25 | Daimler Benz Ag | DEVICE FOR OPERATING THE VALVES IN COMBUSTION ENGINE. |
DE2819356A1 (en) * | 1978-05-03 | 1979-11-08 | Bayerische Motoren Werke Ag | ROCKING LEVER FOR THE VALVE DRIVE OF COMBUSTION ENGINE |
US6199527B1 (en) * | 1998-03-12 | 2001-03-13 | Nsk Ltd. | Sheet metal rocker arm, manufacturing method thereof, cam follower with said rocker arm, and assembling method thereof |
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 |
DE10205216B4 (en) * | 2002-02-08 | 2006-04-27 | Robert Bosch Gmbh | Actuator with variable stroke for an oscillating component |
JP2003239713A (en) * | 2002-02-18 | 2003-08-27 | Toyota Motor Corp | Valve mechanism for internal combustion engine |
KR20060038358A (en) * | 2003-03-18 | 2006-05-03 | 제너럴 모터즈 코오포레이션 | Engine valve actuator assembly |
DE10316990A1 (en) * | 2003-04-11 | 2004-10-28 | Rolf Jung | Fully-variable valve operating gear for vehicle engine includes cams with inclined running surfaces operated in longitudinal direction by adjuster |
US6684832B1 (en) * | 2003-04-28 | 2004-02-03 | Roberto Marcelo Codina | Oscillating camshaft controlled valve operating device |
JP2004353643A (en) * | 2003-05-26 | 2004-12-16 | Zenji Ishikawa | Valve mechanism of four-cycle internal combustion engine |
JP4237643B2 (en) * | 2003-08-25 | 2009-03-11 | ヤマハ発動機株式会社 | Valve mechanism of internal combustion engine |
JP4255878B2 (en) * | 2004-05-07 | 2009-04-15 | ダイハツ工業株式会社 | Valve mechanism in internal combustion engine |
US7089899B1 (en) * | 2005-07-11 | 2006-08-15 | Eaton Corporation | Stamped two-step rocker arm component |
-
2006
- 2006-04-21 DE DE102006018511A patent/DE102006018511A1/en not_active Withdrawn
-
2007
- 2007-04-11 EP EP07105922A patent/EP1847690B1/en not_active Not-in-force
- 2007-04-20 CN CNA2007101012650A patent/CN101059088A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
EP1847690A3 (en) | 2010-01-27 |
DE102006018511A1 (en) | 2007-10-25 |
CN101059088A (en) | 2007-10-24 |
EP1847690A2 (en) | 2007-10-24 |
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