DE10235403A1 - Swivel lever for a variable stroke valve train - Google Patents
Swivel lever for a variable stroke valve train Download PDFInfo
- Publication number
- DE10235403A1 DE10235403A1 DE10235403A DE10235403A DE10235403A1 DE 10235403 A1 DE10235403 A1 DE 10235403A1 DE 10235403 A DE10235403 A DE 10235403A DE 10235403 A DE10235403 A DE 10235403A DE 10235403 A1 DE10235403 A1 DE 10235403A1
- Authority
- DE
- Germany
- Prior art keywords
- roller element
- roller
- swivel lever
- hand
- lever
- 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- Withdrawn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
- F01L13/0005—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)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
Schwenkhebel (3) 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 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 das Rollenelement (4) von einer Verstelleinrichtung (11) zur Hubhöhenverstellung parallel zur Kulissenbahn (5') gesteuert verschiebbar ist, wobei das Rollenelement (4) aus zumindest einem ersten Rollenelement (4a) und einem zweiten Rollenelement (4b) besteht und radial von zumindest einem Wälzlager (12) gelagert ist. DOLLAR A Aufgrund der vorgeschlagenen Ausgestaltung des Schwenkhebels wird die innere Reibung und somit der Verschleiß des Schwenkhebels vermindert.Swivel lever (3) 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 an oscillation pivot point (4 ') on a slide track (5'), a slide (5) and on the other hand A control track (6) is supported without play on an intermediate element (7) to a gas exchange valve (8), 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 of a spring (10) can be pivoted in a controlled manner and, on the other hand, the roller element (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 roller element (4) comprising at least a first roller element (4a) and a second roller element ( 4b) and is supported radially by at least one roller bearing (12). DOLLAR A Due to the proposed design of the pivot lever, the internal friction and thus the wear of the pivot lever is reduced.
Description
Die Erfindung betrifft einen Schwenkhebel für einen hubvariablen Ventiltrieb gemäß der Merkmale im Oberbegriff des Patentanspruchs 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
Da das erste Rollenelement
Aufgabe der vorliegenden Erfindung ist es, reibungsmindernde Maßnahmen für einen gattungsgemäßen Schwenkhebel aufzuzeigen.Object of the present invention is to reduce friction for one generic pivot lever show.
Diese Aufgabe wird durch die Merkmale im kennzeichnenden Teil des Patentanspruchs 1 gelöst.This task is due to the characteristics solved in the characterizing part of claim 1.
Die Aufteilung des Rollenelementes in zwei separate Rollenelemente führt dazu, dass in vorteilhafter Weise das erste Rollenelement oder das zweite Rollenelement jeweils nur entweder mit der Kulisse oder mit der Verstelleinheit in Wirkverbindung steht. Fertigungstechnisch bedingte Toleranzen bei der Rollenfertigung können durch diese Anordnung besser ausgeglichen werden, wodurch die innere Reibung und somit der Verschleiß gesenkt wird.The division of the role element in two separate roll elements leads to more advantageous Way the first roller element or the second roller element each only in operative connection either with the backdrop or with the adjustment unit stands. Manufacturing-related tolerances in roll production can can be better compensated by this arrangement, which makes the inner Friction and thus wear are reduced becomes.
Bei einer Ausgestaltung gemäß Patentanspruch 2 addieren sich die Lagertoleranzen des ersten Rollenelementes und des zweiten Rollenelementes, wodurch fertigungstechnisch bedingte Toleranzen noch besser ausgeglichen werden können.In a configuration according to claim 2 add up the bearing tolerances of the first roller element and of the second roller element, so that production-related Tolerances can be compensated even better.
Die aufwendige Ausgestaltung gemäß der Patentansprüche 3 und 4 weist beim Betrieb des Schwenkhebels die geringsten Reibungsverluste und somit den geringsten Verschleiß auf.The complex design according to claims 3 and 4 has the lowest friction losses during operation of the pivot lever and therefore the least wear.
Die Ausgestaltung gemäß Patentanspruch 5 weist im Betrieb die beste Kraftverteilung sowie die geringste Reibung auf, was wiederum die Lebensdauer erhöht, die innere Reibung, den Verschleiß und den Brennstoffverbrauch der Brennkraftmaschine minimiert.The design according to claim 5 shows the best power distribution and the lowest in operation Friction, which in turn increases the lifespan, the internal friction Wear and the Fuel consumption of the internal combustion engine is minimized.
Im Folgenden ist die Erfindung anhand zweier bevorzugter Ausführungsbeispiele in fünf Figuren näher erläutert.The invention is described below two preferred embodiments in five Figures closer explained.
Für
die selben Bauteile gelten in den
In weiteren Ausführungsbeispielen kann auch
nur ein erstes Rollenelement
In einem weiteren Ausführungsbeispiel
kann, wie im Fall des ersten Ausführungsbeispieles nur ein einziges
erstes Rollenelement
Für
alle Ausführungsbeispiele
gilt, dass die Wälzlager
- 11
- Zylinderkopfcylinder head
- 22
- Hubvariabler VentiltriebHubvariabler valve train
- 33
- Schwenkhebelpivoting lever
- 3'3 '
- Gehäusecasing
- 44
- Rollenelementroller element
- 4a4a
- Erstes Rollenelementfirst roller element
- 4b4b
- Zweites Rollenelementsecond 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
- Drittes Rollenelementthird roller element
- 1414
- SpielausgleichselementLash adjuster
- 1515
- Erste BohrungFirst drilling
- 15'15 '
- Zweite BohrungSecond drilling
- 1616
- Erster Bolzenfirst bolt
- 16'16 '
- Zweiter Bolzensecond bolt
- 1717
- Wälzlagerroller bearing
- 17', 17'',17 ', 17 ''
-
17''' Separates Wälzlager17 ''' Separate roller bearing
Claims (5)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10235403A DE10235403A1 (en) | 2002-08-02 | 2002-08-02 | Swivel lever for a variable stroke valve train |
EP03015068A EP1387048B1 (en) | 2002-08-02 | 2003-07-03 | Rocking lever for valve drive with variable lift |
DE50312150T DE50312150D1 (en) | 2002-08-02 | 2003-07-03 | Swivel lever for a variable-stroke valve drive |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10235403A DE10235403A1 (en) | 2002-08-02 | 2002-08-02 | Swivel lever for a variable stroke valve train |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10235403A1 true DE10235403A1 (en) | 2004-02-12 |
Family
ID=30010568
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10235403A Withdrawn DE10235403A1 (en) | 2002-08-02 | 2002-08-02 | Swivel lever for a variable stroke valve train |
DE50312150T Expired - Lifetime DE50312150D1 (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 |
---|---|---|---|
DE50312150T Expired - Lifetime DE50312150D1 (en) | 2002-08-02 | 2003-07-03 | Swivel lever for a variable-stroke valve drive |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1387048B1 (en) |
DE (2) | DE10235403A1 (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 |
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 |
DE102006018512A1 (en) * | 2006-04-21 | 2007-10-25 | Schaeffler Kg | Roller element for a pivotable machine part |
DE102015118884A1 (en) * | 2015-11-04 | 2017-05-04 | Pierburg Gmbh | Mechanically controllable valve train |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4766007B2 (en) * | 2007-06-14 | 2011-09-07 | トヨタ自動車株式会社 | Variable valve gear |
DE102011003898B4 (en) * | 2011-02-10 | 2021-09-09 | Schaeffler Technologies AG & Co. KG | Intermediate lever |
DE102011003900A1 (en) * | 2011-02-10 | 2012-08-16 | Schaeffler Technologies Gmbh & Co. Kg | intermediate lever |
DE102014100748B4 (en) * | 2014-01-23 | 2017-04-27 | Pierburg Gmbh | Transmission arrangement for a mechanically controllable valve train and mechanically controllable valve train |
DE102014109573A1 (en) * | 2014-07-09 | 2016-01-14 | Pierburg Gmbh | Mechanically controllable valve train |
DE102016122179A1 (en) * | 2016-11-18 | 2018-05-24 | Pierburg Gmbh | Mechanically controllable valve train |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4223173A1 (en) * | 1992-07-15 | 1994-01-20 | Bayerische Motoren Werke Ag | Valve mechanism for vehicle IC engine - has different lift curves for each pair of valves per cylinder controlled by roller-actuated eccentrics |
DE4446725A1 (en) * | 1993-07-06 | 1996-01-11 | Meta Motoren Energietech | Method for variably controlling valve in IC engine |
EP1022443A1 (en) * | 1999-01-19 | 2000-07-26 | Ford Global Technologies, Inc. | Variable valve drive for internal combustion engine |
DE19920512A1 (en) * | 1999-05-05 | 2000-11-09 | Opel Adam Ag | Device for actuating a valve with a variable stroke on internal combustion engines |
DE19960742A1 (en) * | 1999-12-16 | 2001-06-21 | Iav Gmbh | Variable valve drive, preferably for combustion engine, has pressure roller rotatably mounted in swinging arm with pivot axis fixed relative to cylinder head but adjustable in position |
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 (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
EP1096115B1 (en) * | 1999-10-29 | 2002-07-10 | STS System Technology Services GmbH | Mechanically controlled intake valve lift in an internal combustion engine |
DE10016103A1 (en) * | 2000-03-31 | 2001-10-04 | Audi Ag | Variable valve timing |
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 DE10235403A patent/DE10235403A1/en not_active Withdrawn
-
2003
- 2003-07-03 EP EP03015068A patent/EP1387048B1/en not_active Expired - Lifetime
- 2003-07-03 DE DE50312150T patent/DE50312150D1/en not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4223173A1 (en) * | 1992-07-15 | 1994-01-20 | Bayerische Motoren Werke Ag | Valve mechanism for vehicle IC engine - has different lift curves for each pair of valves per cylinder controlled by roller-actuated eccentrics |
DE4446725A1 (en) * | 1993-07-06 | 1996-01-11 | Meta Motoren Energietech | Method for variably controlling valve in IC engine |
EP1022443A1 (en) * | 1999-01-19 | 2000-07-26 | Ford Global Technologies, Inc. | Variable valve drive for internal combustion engine |
DE19920512A1 (en) * | 1999-05-05 | 2000-11-09 | Opel Adam Ag | Device for actuating a valve with a variable stroke on internal combustion engines |
DE19960742A1 (en) * | 1999-12-16 | 2001-06-21 | Iav Gmbh | Variable valve drive, preferably for combustion engine, has pressure roller rotatably mounted in swinging arm with pivot axis fixed relative to cylinder head but adjustable in position |
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 (5)
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 |
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 |
DE102006018512A1 (en) * | 2006-04-21 | 2007-10-25 | Schaeffler Kg | Roller element for a pivotable machine part |
DE102015118884A1 (en) * | 2015-11-04 | 2017-05-04 | Pierburg Gmbh | Mechanically controllable valve train |
Also Published As
Publication number | Publication date |
---|---|
EP1387048A3 (en) | 2007-07-25 |
EP1387048B1 (en) | 2009-11-25 |
EP1387048A2 (en) | 2004-02-04 |
DE50312150D1 (en) | 2010-01-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP3170997B1 (en) | Variable valve drive with a rocker arm | |
EP0389609B1 (en) | Device for actuating the valves of internal combustion engines with adjustable valve-lifting cam | |
DE10006018B4 (en) | Variable valve drive for load control of a spark-ignited internal combustion engine | |
EP2126292A1 (en) | Valve drive for gas exchange valves of an internal combustion engine, comprising an axially movable bearing | |
DE102006054168A1 (en) | Two-stage rocker arm with roller element cam followers | |
EP0761935A2 (en) | Variable valve driving gear, particularly for internal combustion engines | |
DE102008015197B4 (en) | Valve mechanism of an engine | |
DE102004057438A1 (en) | Gear train consists of tilt lever that operates with gas exchange valve and is connected to push rod that has adjustment system that comprises an adjustable oscillating lever that works with a tappet shaft and cam | |
DE10235403A1 (en) | Swivel lever for a variable stroke valve train | |
DE10235402A1 (en) | Swivel lever for a variable stroke valve train | |
DE102004057439A1 (en) | Valve operating mechanism for gas exchange valve of diesel engine, has non-adjustable oscillating arm that is shifted in direction of base circle of cam at sliding surface over circular arc-shaped upper surface of adjustable oscillating arm | |
EP1205643A1 (en) | Valve drive in an internal combustion engine | |
EP1050669A2 (en) | Valve driving arrangement with variable lift for an internal combustion engine | |
EP1022443B1 (en) | Variable valve drive for internal combustion engine | |
DE19904840A1 (en) | Valve drive for IC engines has thrust crank-like pressure lever supported on valve shaft and on intermittently rotating support body | |
DE10235400A1 (en) | Cylinder head for an internal combustion engine with a variable stroke valve train | |
DE102008015218B4 (en) | Valve mechanism of an engine | |
DE102004038473B4 (en) | Valve train for charge exchange valves of internal combustion engines | |
EP1590554B1 (en) | Fully variable mechanical valve drive mechanism for a piston-type internal combustion engine comprising adjustable valve play compensation | |
DE10235401A1 (en) | Lift stroke-variable valve gear for cylinder head of internal combustion engine has second pivoting lever installed stationary on first lever to form one-piece and material uniform double lever arrangement | |
WO2005026503A2 (en) | Fully variable lift valve controller | |
EP1288451B1 (en) | Cylinder head for an internal combustion engine with a variable lift valve controlling device | |
DE10306154A1 (en) | Valve drive mechanism for an internal combustion engine has a drive shaft and cams to rotate coaxially around the drive shaft | |
DE102011104548A1 (en) | Full variable stroke valve controller for combustion engine in automobile, has eccentric and supporting shafts rotated at pivot point of intermediate lever during valve opening duration in order to vary valve lift | |
DE3901966A1 (en) | Valve drive for a reciprocating valve with mechanical compensation of the valve play |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8127 | New person/name/address of the applicant |
Owner name: BAYERISCHE MOTOREN WERKE AG, 80809 MUENCHEN, DE Owner name: PEUGEOT CITROEN AUTOMOBILES S.A., VELIZY-VILLA, FR |
|
8128 | New person/name/address of the agent |
Representative=s name: BEETZ & PARTNER PATENTANWAELTE, 80538 MUENCHEN |
|
8141 | Disposal/no request for examination | ||
8170 | Reinstatement of the former position | ||
8110 | Request for examination paragraph 44 | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20120301 |