EP1143118B1 - Vorrichtung zur Hubverstellung eines Gaswechselventils im Zylinderkopf einer Brennkraftmaschine - Google Patents
Vorrichtung zur Hubverstellung eines Gaswechselventils im Zylinderkopf einer Brennkraftmaschine Download PDFInfo
- Publication number
- EP1143118B1 EP1143118B1 EP01106205A EP01106205A EP1143118B1 EP 1143118 B1 EP1143118 B1 EP 1143118B1 EP 01106205 A EP01106205 A EP 01106205A EP 01106205 A EP01106205 A EP 01106205A EP 1143118 B1 EP1143118 B1 EP 1143118B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lever
- cylinder head
- cam
- control shaft
- 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.)
- Expired - Lifetime
Links
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
- 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
Definitions
- the invention relates to a preamble of claim 1 Device for stroke adjustment of a gas exchange valve in the cylinder head Internal combustion engine, wherein a cooperating with the gas exchange valve
- the transmission element is in line contact with an idle stroke curve and one Stroke curve control path on one lever, the other Lever end in line contact is with a cam on one in the cylinder head controlled rotatable and fixable control shaft, one in the cylinder head for Control shaft camshaft arranged in parallel via a cam on a cam track acts on the swivel lever to actuate the gas exchange valve.
- Such a device is known for example from DE 42 23 172 C1.
- the to achieve a variable stroke - zero stroke to full stroke - from Cam of a camshaft swiveled pivot lever in its free Lever end adjacent to the line contact with one used for stroke adjustment Cam is guided over a slot on a bolt fixed to the housing.
- this slot guide many swivel levers on a common guide pin or common guide rod a multi-cylinder internal combustion engine increased friction with the danger a tilt of the swivel lever (s).
- a common one Guide rod for the swivel levers of similar gas exchange valves a cylinder row in an internal combustion engine requires an increased space.
- the invention is based, for a device for stroke adjustment the task a gas exchange valve a space-saving design while avoiding the Point out the danger of the tilting lever tilting due to friction.
- the invention advantageously takes up less installation space Device for stroke adjustment of a gas exchange valve achieved, with a friction Canting of the swivel lever guided according to the invention by means of a relatively simple design of the support surfaces on the shaft sections of the Tax wave is avoided.
- the background of the spherical support surfaces according to the invention is that the backdrops of the pivot lever are completed in one operation and thus the same Contour and same angle errors.
- the ones that interact with the scenery Support surfaces of the shaft sections are in two successive Work steps completed, with a cylindrical design of the shaft sections or the support surfaces are different diameters and different or can even result in opposite conicity.
- the support surfaces have a Show crowning of approx. 10 - 15 ⁇ m.
- the swivel levers advantageously carry only in Area of the support surface of the backdrop and not on its edges. This allows the otherwise wear does not occur because the point of contact of the two Sliding partners quickly by smoothing the surfaces to a touch ellipse expands long until the occurring Hertzian pressures are safely borne can.
- a device 1 for stroke adjustment of a section only shown Gas exchange valve 2 in a cylinder head 3, only indicated, one not shown Internal combustion engine includes one that interacts with the gas exchange valve 2 Transmission element 4, which is in line contact via a roller 5 with a control path 6 comprising an idle stroke curve 6 ′ and a stroke curve 6 ′′ a swivel lever 7.
- the swivel lever 7 projects from the other end 8 of the lever a rolling element 8 'in line contact with one of the stroke settings of the gas exchange valve 2 serving cam 9 on a controlled in the cylinder head 3 and fixable control shaft 10, which has a parallel arranged in the cylinder head 3, Not shown camshaft is associated with a cam at 11 on a Roller 12 acts on the pivot lever 7 for actuating the stroke of the gas exchange valve 2.
- pivot lever 7 The space-saving, pivotable arrangement of the pivot lever 7 is this on the one hand during a cam-controlled and against one only in sections Return spring 13 caused pivoting movement over the Line-end contact of the rolling element 8 'on the lever end with the cam plate 9 and furthermore with support surfaces 14 on shaft sections 15 of the control shaft 10 on both sides the cam 9 on the other hand interacting slidably Swivel lever scenes 16 performed.
- the support surfaces 14 have a crown of approximately 10-15 ⁇ m.
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)
Description
- Figur 1
- eine erfindungsgemäße Vorrichtung zur Hubverstellung eines Gaswechselventils in perspektivischer Ansicht,
- Figur 2
- einen Schwenkhebel nach Figur 1 in perspektivischer Darstellung.
Claims (3)
- Vorrichtung zur Hubverstellung eines Gaswechselventils im Zylinderkopf einer Brennkraftmaschine,wobei ein mit dem Gaswechselventil (2) zusammenwirkendes Übertragungselement (4) in Linienberührung steht mit einer eine Leerhubkurve (6') und eine Hubkurve (6") umfassenden Steuerbahn (6) an einem Schwenkhebel (7), deram anderen Hebelende (8) in Linienberührung (bei 8') steht mit einer Kurvenscheibe (9) auf einer im Zylinderkopf (3) gesteuert dreh- und fixierbaren Steuerwelle (10), wobeieine im Zylinderkopf (3) zur Steuerwelle (10) parallel angeordnete Nockenwelle über einen Nocken auf eine Kurvenbahn (Rolle 12) am Schwenkhebel (7) zur Hubbetätigung des Gaswechselventils (2) einwirkt,dass der Schwenkhebel (7) einerseits während einer nockengesteuerten und gegen eine Rückstellfeder (13) bewirkten Schwenkbewegung über die hebelendseitige Linienberührung (bei 8') mit der Kurvenscheibe (9) undferner über mit Stützflächen (14) an Wellenabschnitten (15) der Steuerwelle (10) beiderseits der Kurvenscheibe (9) andererseits gleitbeweglich zusammenwirkenden Schwenkhebel-Kulissen (16) geführt ist, wobeidie mit den Schwenkhebel-Kulissen (16) zusammenwirkenden Stützflächen (14) der Wellenabschnitte (15) der Steuerwelle (10) ballig ausgebildet sind.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Stützflächen (14) eine Balligkeit von ca. 10 - 15 µm aufweisen.
- Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass sich die balligen Stützflächen (14) jeweils von der benachbarten Kurvenscheibe (9) ausgehend jeweils über einen wesentlichen Teil des Wellenabschnittes (15) erstrecken.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10017441 | 2000-04-07 | ||
DE10017441A DE10017441A1 (de) | 2000-04-07 | 2000-04-07 | vorrichtung zur Hubverstellung eines Gaswechselventils im Zylinderkopf einer Brennkraftmaschine |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1143118A2 EP1143118A2 (de) | 2001-10-10 |
EP1143118A3 EP1143118A3 (de) | 2002-11-13 |
EP1143118B1 true EP1143118B1 (de) | 2003-08-13 |
Family
ID=7638002
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01106205A Expired - Lifetime EP1143118B1 (de) | 2000-04-07 | 2001-03-14 | Vorrichtung zur Hubverstellung eines Gaswechselventils im Zylinderkopf einer Brennkraftmaschine |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1143118B1 (de) |
DE (2) | DE10017441A1 (de) |
ES (1) | ES2204773T3 (de) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10235400A1 (de) * | 2002-08-02 | 2004-02-19 | Bayerische Motoren Werke Ag | Zylinderkopf für eine Brennkraftmaschine mit einem hubvariablen Ventiltrieb |
DE10235402A1 (de) * | 2002-08-02 | 2004-02-12 | Bayerische Motoren Werke Ag | Schwenkhebel für einen hubvariablen Ventiltrieb |
DE10260557A1 (de) * | 2002-12-21 | 2004-07-01 | Ina-Schaeffler Kg | Zwischenhebel für einen variablen Ventiltrieb einer Brennkraftmaschine |
JP4248343B2 (ja) * | 2003-05-01 | 2009-04-02 | ヤマハ発動機株式会社 | エンジンの動弁装置 |
JP4248344B2 (ja) * | 2003-05-01 | 2009-04-02 | ヤマハ発動機株式会社 | エンジンの動弁装置 |
DE10322250B4 (de) * | 2003-05-13 | 2008-01-17 | Federal-Mogul Wiesbaden Gmbh & Co. Kg | System mit Hilfsnockenwelle und mindestens zwei Lagern und Verfahren zur Herstellung eines Systems mit Hilfsnockenwelle und mindestens zwei Lagern |
EP1496211A1 (de) * | 2003-07-08 | 2005-01-12 | Bayerische Motoren Werke Aktiengesellschaft | Schwenkhebel für einen hubvariablen Ventiltrieb |
DE102005040959A1 (de) * | 2005-08-30 | 2007-03-08 | Bayerische Motoren Werke Ag | Hubvariabler Ventiltrieb für eine Brennkraftmaschine |
DE102006018511A1 (de) * | 2006-04-21 | 2007-10-25 | Schaeffler Kg | Schwinghebel für einen hubvariablen Ventiltrieb |
DE102006018510A1 (de) * | 2006-04-21 | 2007-10-25 | Schaeffler Kg | Schwinghebel für einen hubvariablen Ventiltrieb |
DE102007033821B4 (de) * | 2007-07-18 | 2013-10-31 | Hydraulik-Ring Gmbh | Arbeitskurve eines variablen Ventiltriebs |
CN101550853B (zh) * | 2009-05-08 | 2011-04-06 | 上海汽车集团股份有限公司 | 发动机气门连续可变驱动机构 |
DE102011075236A1 (de) * | 2011-05-04 | 2012-11-08 | Schaeffler Technologies AG & Co. KG | Zwischenhebel |
DE102011077527A1 (de) * | 2011-06-15 | 2012-12-20 | Schaeffler Technologies AG & Co. KG | Zwischenhebel |
DE102014100748B4 (de) * | 2014-01-23 | 2017-04-27 | Pierburg Gmbh | Übertragungsanordnung für einen mechanisch steuerbaren Ventiltrieb sowie mechanisch steuerbarer Ventiltrieb |
DE102016220394B3 (de) * | 2016-10-18 | 2017-12-28 | Schaeffler Technologies AG & Co. KG | Zwischenhebel eines variablen Ventiltriebs |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4223172C1 (en) | 1992-07-15 | 1993-08-19 | Bayerische Motoren Werke Ag, 8000 Muenchen, De | Cylinder head for IC engine - bearing cover for cam shaft bearing also acts for bearing for eccentric shaft |
DE4326331A1 (de) | 1992-07-15 | 1995-02-09 | Bayerische Motoren Werke Ag | Ventiltrieb einer Brennkraftmaschine |
EP0638706A1 (de) * | 1993-08-05 | 1995-02-15 | Bayerische Motoren Werke Aktiengesellschaft | Ventiltrieb einer Brennkraftmaschine |
DE19708484B4 (de) * | 1997-03-03 | 2006-07-13 | Bayerische Motoren Werke Ag | Vorrichtung zur Änderung des Ventilhubverlaufes eines Hubventils, insbesondere eines Gaswechselventils von Brennkraftmaschinen |
-
2000
- 2000-04-07 DE DE10017441A patent/DE10017441A1/de not_active Withdrawn
-
2001
- 2001-03-14 EP EP01106205A patent/EP1143118B1/de not_active Expired - Lifetime
- 2001-03-14 ES ES01106205T patent/ES2204773T3/es not_active Expired - Lifetime
- 2001-03-14 DE DE50100476T patent/DE50100476D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP1143118A3 (de) | 2002-11-13 |
EP1143118A2 (de) | 2001-10-10 |
DE10017441A1 (de) | 2001-10-11 |
DE50100476D1 (de) | 2003-09-18 |
ES2204773T3 (es) | 2004-05-01 |
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