DE10235402A1 - Swivel lever for a variable stroke valve train - Google Patents
Swivel lever for a variable stroke valve train Download PDFInfo
- Publication number
- DE10235402A1 DE10235402A1 DE10235402A DE10235402A DE10235402A1 DE 10235402 A1 DE10235402 A1 DE 10235402A1 DE 10235402 A DE10235402 A DE 10235402A DE 10235402 A DE10235402 A DE 10235402A DE 10235402 A1 DE10235402 A1 DE 10235402A1
- Authority
- DE
- Germany
- Prior art keywords
- swivel lever
- hand
- housing
- backdrop
- stroke
- 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- Withdrawn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
- 239000002184 metal Substances 0.000 claims abstract description 6
- 238000002485 combustion reaction Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000005495 investment casting Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004061 bleaching Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 229910000760 Hardened steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 235000019589 hardness Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- F01L13/0005—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
- 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
-
- 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
-
- 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
- F01L2820/01—Absolute values
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Schwenkhebel (3) mit zumindest einem Gehäuse (17), für einen hubvariablen Ventiltrieb (2) in einem Zylinderkopf (1) einer Brennkraftmaschine, der einerseits mit einem Rollenelement (4) mit einem Schwingdrehpunkt (4') auf einer Kulissenbahn (5') 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 (4') von einer Verstelleinrichtung (11) zur Hubhöhenverstellung parallel zur Kulissenbahn (5') gesteuert verschiebbar ist, wobei das Gehäuse (17) und die Kulisse (5) aus Blech gefertigt sind. DOLLAR A Durch die erfindungsgemäße Ausgestaltung des Gehäuses werden die Herstellkosten sowie das Gewicht des Schwenkhebels reduziert.Swivel lever (3) with at least one housing (17) for a variable-stroke valve train (2) in a cylinder head (1) of an internal combustion engine, which on the one hand has a roller element (4) with a pivot point (4 ') on a slide track (5') 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, the swivel lever (3) for adjusting the stroke between the support points on the one hand by a cam (9) of a camshaft ( 9 ') can be pivoted in a controlled manner against a force of a spring (10) 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 housing (17) and the slide ( 5) are made of sheet metal. DOLLAR A The design of the housing according to the invention reduces the manufacturing costs and the weight of the pivoting lever.
Description
Die Erfindung betrifft einen Schwenkhebel für einen hubvariablen Ventiltrieb gemäß der Merkmale im Oberbegriff des Patentanspruches 1.The invention relates to a pivot lever for one stroke variable valve train according to the characteristics in the preamble of claim 1.
Sie geht von der noch nicht veröffentlichten deutschen
Patentanmeldung
Die im Feingussverfahren hergestellten Schwenkhebelgehäuse weisen üblicherweise ein relativ hohes Gewicht auf, wodurch die höchste Drehzahl der Brennkraftmaschine eingeschränkt sein könnte, darüber hinaus sind die Herstellkosten für Feingussteile hoch.The swivel lever housings manufactured in the investment casting process usually have a relatively high weight, resulting in the highest speed of the internal combustion engine limited could be, about that In addition, the manufacturing costs for investment castings high.
Aufgabe der vorliegenden Erfindung ist es, einen gattunsgemäßen Schwenkhebel leichter im Gewicht und billiger in der Herstellung zu machen.Object of the present invention is a generic swivel lever lighter in weight and cheaper to manufacture.
Diese Aufgabe wird durch das Merkmal im kennzeichnenden Teil des Patentanspruches 1 gelöst.This task is characterized by the feature solved in the characterizing part of claim 1.
In vorteilhafter Weise kann das Gehäuse als Biege, Stanz- oder Schweißkonstruktion ausgeführt werden. Diese preisgünstigen Herstellverfahren reduzieren die Herstellkosten. Ferner kann die Bauteilstärke im Zuge der Blechumformung minimal ausgelegt werden, da in vorteilhafter Weise bei der Umformung eine Materialverfestigung eintritt. Aufgrund der Gewichtsreduzierung sind mit dem Ventiltrieb höhere Drehzahlen erreichbar.Advantageously, the housing can be used as a bend, Stamped or welded construction be carried out. These inexpensive Manufacturing processes reduce manufacturing costs. Furthermore, the component size be designed minimally in the course of sheet metal forming, because in more advantageous How material hardening occurs during the forming process. by virtue of to reduce weight are higher speeds with the valve train reachable.
Eine Ausgestaltung gemäß der Patentansprüche 2 und 3 gewährleistet hinreichende Festigkeit des Bauteils und eine teure Kombination unterschiedlicher Materialien ist nicht notwendig.An embodiment according to claims 2 and 3 guaranteed sufficient strength of the component and an expensive combination different materials is not necessary.
Durch eine geeignete Materialstärkenauswahl gemäß Patentanspruch 4 kann die beste Abstimmung zwischen Gewichtreduzierung und notwendiger Festigkeit erzielt werden.Through a suitable choice of material thickness according to claim 4 can be the best balance between weight reduction and necessary Strength can be achieved.
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
dieselben Bauteile in
Im vorliegenden Ausführungsbeispiel
sind die zwei Seitenwangen
Neben einer einstöckigen Herstellung aus Blech
durch Umformung ist es auch möglich,
das Gehäuse
- 11
- Zylinderkopfcylinder head
- 22
- Hubvariabler VentiltriebHubvariabler valve train
- 33
- Schwenkhebelpivoting lever
- 3a3a
- Erste SeitenwangeFirst side cheek
- 3b3b
- Zweite SeitenwangeSecond side cheek
- 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
- 1515
- Erste BohrungFirst drilling
- 15'15 '
- Zweite BohrungSecond drilling
- 1616
- Versteifungsbügelstiffener
- 1717
- Gehäusecasing
Claims (4)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10235402A DE10235402A1 (en) | 2002-08-02 | 2002-08-02 | Swivel lever for a variable stroke valve train |
| DE50300275T DE50300275D1 (en) | 2002-08-02 | 2003-07-03 | Swivel lever for a variable-stroke valve drive |
| EP03015069A EP1387049B1 (en) | 2002-08-02 | 2003-07-03 | Rocker arm for a variable lift valve drive |
| DE10330673A DE10330673A1 (en) | 2002-08-02 | 2003-07-08 | Rocker lever for lift-variable valve gear in cylinder head of internal combustion engine has housing and control track are manufactured in one piece by means of powder-metallurgical injection moulding process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10235402A DE10235402A1 (en) | 2002-08-02 | 2002-08-02 | Swivel lever for a variable stroke valve train |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE10235402A1 true DE10235402A1 (en) | 2004-02-12 |
Family
ID=30010567
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE10235402A Withdrawn DE10235402A1 (en) | 2002-08-02 | 2002-08-02 | Swivel lever for a variable stroke valve train |
| DE50300275T Expired - Lifetime DE50300275D1 (en) | 2002-08-02 | 2003-07-03 | Swivel lever for a variable-stroke valve drive |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE50300275T Expired - Lifetime DE50300275D1 (en) | 2002-08-02 | 2003-07-03 | Swivel lever for a variable-stroke valve drive |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1387049B1 (en) |
| DE (2) | DE10235402A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| DE102010009399A1 (en) | 2010-02-26 | 2011-09-01 | Schaeffler Technologies Gmbh & Co. Kg | Operating lever for stroke-variable gas exchange valve gear of internal-combustion engine, has lever housing, which is formed with two side panels and base, which is connected with side panels |
| WO2012107121A1 (en) * | 2011-02-10 | 2012-08-16 | Schaeffler Technologies AG & Co. KG | Intermediate lever |
| CN103321707A (en) * | 2012-03-23 | 2013-09-25 | 谢夫勒科技股份两合公司 | Variable valve train for an internal combustion engine |
| CN103354861A (en) * | 2011-02-10 | 2013-10-16 | 谢夫勒科技股份两合公司 | Intermediate lever |
| WO2014086346A1 (en) | 2012-12-06 | 2014-06-12 | Schaeffler Technologies AG & Co. KG | Intermediate lever |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011077527A1 (en) * | 2011-06-15 | 2012-12-20 | Schaeffler Technologies AG & Co. KG | intermediate lever |
| DE102014206314A1 (en) * | 2014-04-02 | 2015-10-08 | Schaeffler Technologies AG & Co. KG | Method for producing an intermediate lever |
| DE102014208809A1 (en) * | 2014-05-09 | 2015-11-12 | Schaeffler Technologies AG & Co. KG | Rocker arm assembly for a valve train of an internal combustion engine and method for mounting a rocker arm assembly |
| DE102014208810A1 (en) * | 2014-05-09 | 2015-11-12 | Schaeffler Technologies AG & Co. KG | Rocker arm assembly for a valve train of an internal combustion engine and method for mounting a rocker arm assembly |
| DE102014109573A1 (en) | 2014-07-09 | 2016-01-14 | Pierburg Gmbh | Mechanically controllable valve train |
| DE102016220394B3 (en) * | 2016-10-18 | 2017-12-28 | Schaeffler Technologies AG & Co. KG | Intermediate lever of a variable valve train |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3805590A1 (en) * | 1987-02-24 | 1988-09-01 | Gen Motors Corp | VALVE ACTUATION FOR INTERNAL COMBUSTION ENGINES |
| DE19810462A1 (en) * | 1998-03-11 | 1999-09-16 | Daimler Chrysler Ag | Lightweight rocker arm for IC engine |
| DE19816020A1 (en) * | 1998-04-09 | 1999-10-14 | Volkswagen Ag | Rocker arm |
| JP2001065315A (en) * | 1999-08-27 | 2001-03-13 | Nsk Ltd | Rocker arm made of sheet metal |
| EP1255027A1 (en) * | 2001-05-03 | 2002-11-06 | STS System Technology Services GmbH | Mechanic control of variable lift of an intake valve of an internal combustion engine |
Family Cites Families (7)
| 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 |
| 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 |
| DE19708484B4 (en) * | 1997-03-03 | 2006-07-13 | Bayerische Motoren Werke Ag | Device for changing the Ventilhubverlaufes a lift valve, in particular a gas exchange valve of internal combustion engines |
| DE19913742A1 (en) * | 1999-03-26 | 2000-09-28 | Bayerische Motoren Werke Ag | Device for stroke adjustment of a gas exchange valve in the cylinder head of an internal combustion engine |
| 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 |
| 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 |
-
2002
- 2002-08-02 DE DE10235402A patent/DE10235402A1/en not_active Withdrawn
-
2003
- 2003-07-03 EP EP03015069A patent/EP1387049B1/en not_active Expired - Lifetime
- 2003-07-03 DE DE50300275T patent/DE50300275D1/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3805590A1 (en) * | 1987-02-24 | 1988-09-01 | Gen Motors Corp | VALVE ACTUATION FOR INTERNAL COMBUSTION ENGINES |
| DE19810462A1 (en) * | 1998-03-11 | 1999-09-16 | Daimler Chrysler Ag | Lightweight rocker arm for IC engine |
| DE19816020A1 (en) * | 1998-04-09 | 1999-10-14 | Volkswagen Ag | Rocker arm |
| JP2001065315A (en) * | 1999-08-27 | 2001-03-13 | Nsk Ltd | Rocker arm made of sheet metal |
| EP1255027A1 (en) * | 2001-05-03 | 2002-11-06 | STS System Technology Services GmbH | Mechanic control of variable lift of an intake valve of an internal combustion engine |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| EP1862649A1 (en) * | 2006-04-21 | 2007-12-05 | Schaeffler KG | Swing arm for a valve operating mechanism with a variable |
| DE102010009399A1 (en) | 2010-02-26 | 2011-09-01 | Schaeffler Technologies Gmbh & Co. Kg | Operating lever for stroke-variable gas exchange valve gear of internal-combustion engine, has lever housing, which is formed with two side panels and base, which is connected with side panels |
| WO2012107121A1 (en) * | 2011-02-10 | 2012-08-16 | Schaeffler Technologies AG & Co. KG | Intermediate lever |
| CN103354861A (en) * | 2011-02-10 | 2013-10-16 | 谢夫勒科技股份两合公司 | Intermediate lever |
| CN103354861B (en) * | 2011-02-10 | 2016-08-10 | 舍弗勒技术股份两合公司 | Intermediate lever |
| CN103321707A (en) * | 2012-03-23 | 2013-09-25 | 谢夫勒科技股份两合公司 | Variable valve train for an internal combustion engine |
| DE102012204682A1 (en) | 2012-03-23 | 2013-09-26 | Schaeffler Technologies AG & Co. KG | Hubvariabler valve drive for an internal combustion engine |
| US9004023B2 (en) | 2012-03-23 | 2015-04-14 | Schaeffler Technologies AG & Co. KG | Variable valve train for an internal combustion engine |
| CN103321707B (en) * | 2012-03-23 | 2017-04-12 | 舍弗勒技术股份两合公司 | Variable stroke valve train for internal combustion engine |
| WO2014086346A1 (en) | 2012-12-06 | 2014-06-12 | Schaeffler Technologies AG & Co. KG | Intermediate lever |
| DE102012222374A1 (en) | 2012-12-06 | 2014-06-12 | Schaeffler Technologies Gmbh & Co. Kg | intermediate lever |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1387049B1 (en) | 2005-01-26 |
| EP1387049A1 (en) | 2004-02-04 |
| DE50300275D1 (en) | 2005-03-03 |
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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 |