EP1039103A2 - Device for modifying the valve lift in an engine cylinder head - Google Patents

Device for modifying the valve lift in an engine cylinder head Download PDF

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Publication number
EP1039103A2
EP1039103A2 EP00104801A EP00104801A EP1039103A2 EP 1039103 A2 EP1039103 A2 EP 1039103A2 EP 00104801 A EP00104801 A EP 00104801A EP 00104801 A EP00104801 A EP 00104801A EP 1039103 A2 EP1039103 A2 EP 1039103A2
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EP
European Patent Office
Prior art keywords
lever
cam
rotation
axis
control shaft
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.)
Granted
Application number
EP00104801A
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German (de)
French (fr)
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EP1039103B1 (en
EP1039103A3 (en
Inventor
Rolf Dr. Schlachter
Anton Schollweck
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Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
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Publication of EP1039103A2 publication Critical patent/EP1039103A2/en
Publication of EP1039103A3 publication Critical patent/EP1039103A3/en
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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
    • F01L13/0063—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
    • 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
    • F01L13/0015—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

Definitions

  • the invention relates to a Device for stroke adjustment of a gas exchange valve in the cylinder head Internal combustion engine, one interacting 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 pivoted swivel lever in its free Lever end adjacent to the line contact with a 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).
  • the common Guide rod for the swivel levers of all cylinders of the internal combustion engine an increased space requirement.
  • the invention is based, for a device for stroke adjustment the task a gas exchange valve a space-saving construction without the risk of to show frictional tilting of the swivel lever.
  • each pivot lever has a common one Hinge pin is guided by means of two spaced-apart articulation levers.
  • the device for stroke adjustment can be subjected to higher loads on the swivel lever are without the risk of removing line contact. This affects advantageous on acoustics and wear of the device. Further reduced in advantageously the friction. Through the safer according to the invention Swivel lever can also reduce the preload of the return springs, malfunctions are nevertheless excluded.
  • a device 1 for stroke adjustment of a gas exchange valve 2 in the cylinder head 3 ( Figure 3) of an internal combustion engine, not shown, includes one with the gas exchange valve 2 cooperating transmission element 4, which in 5 via a roller Line contact is with an idle stroke curve 6 'and a stroke curve 6' ' Control path 6 on a pivot lever 7.
  • the pivot lever 7 is on other lever end 8 at 8 'in line contact with one of the stroke settings of the Gas exchange valve 2 serving cam 9 controlled on one in the cylinder head 3 rotatable and fixable control shaft 10, one in the cylinder head 3 for Control shaft 10 arranged in parallel camshaft 11 via a cam 12 on a Cam track or roller 13 on the pivot lever 7 for actuating the gas exchange valve 2 acts.
  • the articulation point 17 of the articulation lever 16 on the swivel lever 7 through an intersection of two circular arcs "K 1 , K 2 " around the end points 18, 18 'is a fictitious trajectory 19 of the axis of rotation 15 of the control shaft 10, approximated by an arc determined, the fictitious trajectory 19 of the control shaft axis of rotation 15 with a fixed four-bar joint a, b, c with the coupling "b" pivot lever 7 serves as a kinematically equivalent replacement of the real adjustment of the cam 9 for the area of the idle stroke curve 6 ', the End points 20, 20 'determine the circular arc centers 18, 18' on the fictitious trajectory 19.
  • crank “a” is finally the distance from the center of curvature of the cam track or the axis of rotation 23 of the roller 13 of the pivot lever 7 from the axis of rotation 24 of the camshaft 11 acting on the roller 13 via the cam 12 fixed.
  • FIG. 1 A possible embodiment of the articulation lever 16 can be seen in FIG. 1, the upper part of the articulation lever 16 being bow-shaped for easier assembly is executed. It is non-positive on the cylindrical part of the control shaft 10 held, and can also be secured against detachment.
  • the pivot lever 7 is preferably via a common hinge pin 25 by means of two spaced-apart, fork-like link levers 16 guided.

Abstract

The device incorporates a pivot lever (7), which executes pivot movements due to a cam (12) and a return spring (14), and is guided by a link lever (16). This moves coaxially to the rotary axis (15) of the regulator shaft. Its link point on the pivot lever is defined by a crossing point of two circular arcs about the end points of a fictional curve of the rotary axis. With an imaginary four-bar linkage (a,b,c) with 'b' corresponding to the pivot lever, the fictional curve serves as kinematically equivalent replacement for the actual displacement of the cam disc (9) for the empty stroke curve. The end points (20,20') of this curve determine the centers of the fictional curve.

Description

Die Erfindung bezieht sich gemäß dem Oberbegriff des Patentanspruches 1 auf eine Vorrichtung zur Hubverstellung eines Gaswechselventils im Zylinderkopf einer Brennkraftmaschine, wobei ein mit dem Gaswechselventil zusammenwirkendes Übertragungselement in Linienberührung steht mit einer eine Leerhubkurve und eine Hubkurve umfassenden Steuerbahn an einem Schwenkhebel, der am anderen Hebelende in Linienberührung steht mit einer Kurvenscheibe auf einer im Zylinderkopf gesteuert dreh- und fixierbaren Steuerwelle, wobei eine im Zylinderkopf zur Steuerwelle parallel angeordnete Nockenwelle über einen Nocken auf eine Kurvenbahn am Schwenkhebel zur Hubbetätigung des Gaswechselventils einwirkt.According to the preamble of claim 1, the invention relates to a Device for stroke adjustment of a gas exchange valve in the cylinder head Internal combustion engine, one interacting 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.

Eine derartige Vorrichtung ist beispielsweise aus der DE 42 23 172 C1 bekannt. Hierbei ist der zur Erzielung eines variablen Hubes - Null-Hub bis Voll-Hub - vom Nocken einer Nockenwelle verschwenkte Schwenkhebel in seinem freien Hebelende benachbart der Linienberührung mit einer der Hubeinstellung dienenden Kurvenscheibe über ein Langloch an einem gehäusefesten Bolzen geführt. Wie insbesondere aus den Figuren der weiteren DE 43 26 331 A1 zu einer bauartgleichen Vorrichtung ersichtlich, ergibt sich mit dieser Langlochführung vieler Schwenkhebel auf einem gemeinsamen Führungsbolzen bzw. gemeinsamen Führungsstange bei einer mehrzylindrigen Brennkraftmaschine eine erhöhte Reibung mit der Gefahr einer Verkantung des/der Schwenkhebel. Weiter ist mit der Anordnung der gemeinsamen Führungsstange für die Schwenkhebel sämtlicher Zylinder der Brennkraftmaschine ein erhöhter Platzbedarf verbunden.Such a device is known for example from DE 42 23 172 C1. Here is the to achieve a variable stroke - zero stroke to full stroke - from Cam of a camshaft pivoted swivel lever in its free Lever end adjacent to the line contact with a stroke adjustment Cam is guided over a slot on a bolt fixed to the housing. How in particular from the figures of the further DE 43 26 331 A1 to an identical design Device visible, results with 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). Next is the arrangement of the common Guide rod for the swivel levers of all cylinders of the internal combustion engine an increased space requirement.

Der Erfindung liegt die Aufgabe zugrunde, für eine Vorrichtung zur Hubverstellung eines Gaswechselventils eine bauraumsparende Konstruktion ohne die Gefahr einer reibungsbehafteten Verkantung des Schwenkhebels aufzuzeigen.The invention is based, for a device for stroke adjustment the task a gas exchange valve a space-saving construction without the risk of to show frictional tilting of the swivel lever.

Diese Aufgabe ist mit dem Patentanspruch 1 gelöst. Diese Lösung sieht vor, daß der Schwenkhebel in seinen vom Nocken und einer Rückstellfeder bewirkten Schwenkbewegungen mittels eines koaxial zur Drehachse der Steuerwelle drehbeweglich gelagerten Anlenkhebels geführt ist, dessen Anlenkpunkt am Schwenkhebel durch einen Schnittpunkt zweier Kreisbögen um die Endpunkte einer fiktiven, durch einen Kreisbogen angenäherten Bahnkurve der Drehachse der Steuerwelle bestimmt ist, wobei die fiktive Bahnkurve der Steuerwellen-Drehachse bei festgehalten gedachtem Viergelenk (a, b, c) mit der Koppel "b" = Schwenkhebel als kinematisch äquivalenter Ersatz der realen Verstellung der Kurvenscheibe für den Bereich der Leerhubkurve dient, deren Endpunkte die Kreisbögen-Mittelpunkte auf der fiktiven Bahnkurve bestimmen.This object is achieved with patent claim 1. This solution provides that the Swivel lever in its swivel movements caused by the cam and a return spring rotatable by means of a coaxial to the axis of rotation of the control shaft mounted pivot lever is guided, the pivot point on the pivot lever an intersection of two arcs around the end points of a fictitious one Circular arc approximate path curve of the axis of rotation of the control shaft is determined, where the fictitious trajectory of the control shaft axis of rotation is held in mind Four-bar linkage (a, b, c) with the coupling "b" = swivel lever as kinematically equivalent Replacement of the real adjustment of the cam disc for the area of the idle stroke curve serves, whose end points are the centers of the circular arcs on the fictitious curve determine.

Der Vorteil der Erfindung ist, daß jeder Schwenkhebel über einen gemeinsamen Gelenkbolzen mittels zweier, beabstandet angeordneter Anlenkhebeln geführt ist.The advantage of the invention is that each pivot lever has a common one Hinge pin is guided by means of two spaced-apart articulation levers.

Zur kinematischen Auslegung der als ein Viergelenk betrachteten Vorrichtung wird weiter vorgeschlagen, daß auf der von der Drehachse einer am Übertragungselement angeordneten Rolle ausgehenden Kurbel "c" des Viergelenks (a, b, c) ein Mittelpunkt (M) eines Radiusstrahls der Leerhubkurve abgebildet ist, wobei der Mittelpunkt (M) sich beim Verstellen der Kurvenscheibe für die Hubverstellung auf einem Kreisbogen um die Rollen-Drehachse am Übertragungselement jenseits der Steuerwellen-Drehachse bewegt, und daß ferner mit der Kurbel "a" der Abstand des Krümmungsmittelpunktes der Kurvenbahn des Schwenkhebels von der Drehachse der auf die Kurvenbahn über den Nocken einwirkenden Nockenwelle festgelegt ist.For the kinematic interpretation of the device considered as a four-bar link further suggested that on the one of the axis of rotation on the transmission element arranged roller outgoing crank "c" of the four-bar linkage (a, b, c) Center point (M) of a radius beam of the idle stroke curve is shown, the center point (M) when adjusting the cam for the stroke adjustment an arc around the roller axis of rotation on the transmission element beyond Control shaft axis of rotation moves, and that further with the crank "a" the distance of the Center of curvature of the curved path of the pivot lever from the axis of rotation the camshaft acting on the cam track above the cam is fixed.

Mit der erfindungsgemäßen kinematischen Auslegung und Anordnung des Anlenkhebels am Schwenkhebel kann die Vorrichtung zur Hubverstellung höher belastet werden ohne die Gefahr der Aufhebung von Linienberührungen. Dies wirkt sich vorteilhaft auf Akustik und Verschleiß der Vorrichtung aus. Weiter reduziert sich in vorteilhafter Weise die Reibung. Durch den erfindungsgemäß sicherer geführten Schwenkhebel kann auch die Vorspannung der Rückstellfedern reduziert werden, wobei trotzdem Fehlfunktionen ausgeschlossen sind.With the kinematic design and arrangement of the link lever according to the invention the device for stroke adjustment can be subjected to higher loads on the swivel lever are without the risk of removing line contact. This affects advantageous on acoustics and wear of the device. Further reduced in advantageously the friction. Through the safer according to the invention Swivel lever can also reduce the preload of the return springs, malfunctions are nevertheless excluded.

Die Erfindung ist anhand eines in der Zeichnung dargestellten Ausführungsbeispiels beschrieben. Es zeigt

Figur 1
eine erfindungsgemäße Vorrichtung zur Hubverstellung eines Gaswechselventils in Frontalansicht,
Figur 2
die Vorrichtung nach Figur 1 in Seitenansicht bei weggelassener Rückstellfeder,
Figur 3
die Vorrichtung nach Figur 1 als Viergelenk mit weiteren kinematischen Daten für den Anlenkhebel.
The invention is described with reference to an embodiment shown in the drawing. It shows
Figure 1
an inventive device for stroke adjustment of a gas exchange valve in front view,
Figure 2
2 shows the device according to FIG. 1 in a side view with the return spring omitted,
Figure 3
the device of Figure 1 as a four-bar linkage with additional kinematic data for the link lever.

Eine Vorrichtung 1 zur Hubverstellung eines Gaswechselventils 2 im Zylinderkopf 3 (Figur 3) einer nicht gezeigten Brennkraftmaschine umfaßt ein mit dem Gaswechselventil 2 zusammenwirkendes Übertragungselement 4, das über eine Rolle 5 in Linienberührung steht mit einer eine Leerhubkurve 6' und eine Hubkurve 6'' umfassenden Steuerbahn 6 an einem Schwenkhebel 7. Der Schwenkhebel 7 steht am anderen Hebelende 8 bei 8' in Linienberührung mit einer der Hubeinstellung des Gaswechselventils 2 dienenden Kurvenscheibe 9 auf einer im Zylinderkopf 3 gesteuert dreh- und fixierbaren Steuerwelle 10, wobei eine im Zylinderkopf 3 zur Steuerwelle 10 parallel angeordnete Nockenwelle 11 über einen Nocken 12 auf eine Kurvenbahn bzw. Rolle 13 am Schwenkhebel 7 zur Hubbetätigung des Gaswechselventils 2 einwirkt.A device 1 for stroke adjustment of a gas exchange valve 2 in the cylinder head 3 (Figure 3) of an internal combustion engine, not shown, includes one with the gas exchange valve 2 cooperating transmission element 4, which in 5 via a roller Line contact is with an idle stroke curve 6 'and a stroke curve 6' ' Control path 6 on a pivot lever 7. The pivot lever 7 is on other lever end 8 at 8 'in line contact with one of the stroke settings of the Gas exchange valve 2 serving cam 9 controlled on one in the cylinder head 3 rotatable and fixable control shaft 10, one in the cylinder head 3 for Control shaft 10 arranged in parallel camshaft 11 via a cam 12 on a Cam track or roller 13 on the pivot lever 7 for actuating the gas exchange valve 2 acts.

Eine erfindungsgemäß vorteilhaft bauraumsparende Konstruktion ohne die Gefahr einer reibungsbehafteten Verkantung des Schwenkhebels 7 ist dadurch erreicht, daß der Schwenkhebel 7 in seinen vom Nocken 12 und einer Rückstellfeder 14 bewirkten Schwenkbewegungen gemäß Pfeil "A" mittels eines koaxial zur Drehachse 15 der Steuerwelle 10 drehbeweglich gelagerten Anlenkhebel 16 geführt ist.An advantageous construction space-saving construction according to the invention without the risk frictional tilting of the swivel lever 7 is achieved that the pivot lever 7 caused in his by the cam 12 and a return spring 14 Swivel movements according to arrow "A" using a coaxial to the axis of rotation 15 of the control shaft 10 rotatably mounted articulation lever 16 is guided.

Wie aus Figur 3 ersichtlich, ist der Anlenkpunkt 17 des Anlenkhebels 16 am Schwenkhebel 7 durch einen Schnittpunkt zweier Kreisbögen "K1, K2" um die Endpunkte 18, 18' einer fiktiven, durch einen Kreisbogen angenäherten Bahnkurve 19 der Drehachse 15 der Steuerwelle 10 bestimmt, wobei die fiktive Bahnkurve 19 der Steuerwellen-Drehachse 15 bei festgehalten gedachtem Viergelenk a, b, c mit der Koppel "b" = Schwenkhebel 7 als kinematisch äquivalenter Ersatz der realen Verstellung der Kurvenscheibe 9 für den Bereich der Leerhubkurve 6' dient, deren Endpunkte 20, 20' die Kreisbögen-Mittelpunkte 18, 18' auf der fiktiven Bahnkurve 19 bestimmen.As can be seen from FIG. 3, the articulation point 17 of the articulation lever 16 on the swivel lever 7 through an intersection of two circular arcs "K 1 , K 2 " around the end points 18, 18 'is a fictitious trajectory 19 of the axis of rotation 15 of the control shaft 10, approximated by an arc determined, the fictitious trajectory 19 of the control shaft axis of rotation 15 with a fixed four-bar joint a, b, c with the coupling "b" = pivot lever 7 serves as a kinematically equivalent replacement of the real adjustment of the cam 9 for the area of the idle stroke curve 6 ', the End points 20, 20 'determine the circular arc centers 18, 18' on the fictitious trajectory 19.

Weiter ist aus Figur 3 ersichtlich, daß auf der von der Drehachse 21 einer am Übertragungselement 4 angeordneten Rolle 5 ausgehenden Kurbel "c" des Viergelenks a, b, c ein Mittelpunkt "M" eines Radiusstrahls RLH der Leerhubkurve 6' abgebildet ist, wobei der Mittelpunkt "M" sich beim Verstellen der Kurvenscheibe 9 auf einem Kreisbogen 22 um die Rollen-Drehachse 21 am Übertragungselement 4 jenseits der Steuerwellen-Drehachse 15 bewegt.It can also be seen from FIG. 3 that a center "M" of a radius beam R LH of the idle stroke curve 6 'is shown on the crank "c" of the four-bar linkage a, b, c starting from the axis of rotation 21 of a roller 5 arranged on the transmission element 4, wherein the center point "M" moves on a circular arc 22 around the roller axis of rotation 21 on the transmission element 4 beyond the control shaft axis of rotation 15 when the cam disc 9 is adjusted.

Mit der Kurbel "a" ist schließlich der Abstand des Krümmungsmittelpunktes der Kurvenbahn bzw. der Drehachse 23 der Rolle 13 des Schwenkhebels 7 von der Drehachse 24 der auf die Rolle 13 über den Nocken 12 einwirkenden Nockenwelle 11 festgelegt. With the crank "a" is finally the distance from the center of curvature of the cam track or the axis of rotation 23 of the roller 13 of the pivot lever 7 from the axis of rotation 24 of the camshaft 11 acting on the roller 13 via the cam 12 fixed.

Eine mögliche Ausführungsform des Anlenkhebels 16 ist aus Figur 1 ersichtlich, wobei zur einfacheren Montage der obere Teil des Anlenkhebels 16 bügelförmig ausgeführt ist. Er ist auf dem zylindrischen Teil der Steuerwelle 10 kraftschlüssig gehalten, und kann zusätzlich gegen Ablösen gesichert sein.A possible embodiment of the articulation lever 16 can be seen in FIG. 1, the upper part of the articulation lever 16 being bow-shaped for easier assembly is executed. It is non-positive on the cylindrical part of the control shaft 10 held, and can also be secured against detachment.

Vorzugsweise ist der Schwenkhebel 7 über einen gemeinsamen Gelenkbolzen 25 mittels zweier, beabstandet angeordneter, gabelartig gestalteter Anlenkhebel 16 geführt.The pivot lever 7 is preferably via a common hinge pin 25 by means of two spaced-apart, fork-like link levers 16 guided.

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), der am anderen Hebelende (8) in Linienberührung (bei 8')steht mit einer Kurvenscheibe (9) auf einer im Zylinderkopf (3) gesteuert dreh- und fixierbaren Steuerwelle (10), wobei eine im Zylinderkopf (3) zur Steuerwelle (10) parallel angeordnete Nockenwelle (11) über einen Nocken (12) auf eine Kurvenbahn (Rolle 13) am Schwenkhebel (7) zur Hubbetätigung des Gaswechselventils (2) einwirkt,
dadurch gekennzeichnet, daß der Schwenkhebel (7) in seinen vom Nocken (12) und einer Rückstellfeder (14) bewirkten Schwenkbewegungen (Pfeil "A") mittels eines koaxial zur Drehachse (15) der Steuerwelle (10) drehbeweglich gelagerter Anlenkhebels (16) geführt ist, dessen Anlenkpunkt (17) am Schwenkhebel (7) durch einen Schnittpunkt zweier Kreisbögen (K1, K2) um die Endpunkte (18, 18') einer fiktiven, durch einen Kreisbogen angenäherten Bahnkurve 19 der Drehachse (15) der Steuerwelle (10) bestimmt ist, wobei die fiktive Bahnkurve (19) der Steuerwellen-Drehachse (15) bei festgehalten gedachtem Viergelenk (a, b, c) mit der Koppel "b" = Schwenkhebel (7) als kinematisch äquivalenter Ersatz der realen Verstellung der Kurvenscheibe (9) für den Bereich der Leerhubkurve (6') dient, deren Endpunkte (20, 20') die Kreisbögen-Mittelpunkte (18, 18') der fiktiven Bahnkurve (19) bestimmen. Device for stroke adjustment of a gas exchange valve in the cylinder head of an internal combustion engine, A transmission element (4) cooperating with the gas exchange valve (2) is in line contact with a control path (6) comprising an idle stroke curve (6 ') and a stroke curve (6'') on a swivel lever (7) at the other end of the lever (8) in line contact (at 8 ') stands with a cam disc (9) on a control shaft (10) which can be rotated and fixed in the cylinder head (3), whereby a camshaft (11) arranged parallel to the control shaft (10) in the cylinder head (3) acts via a cam (12) on a cam track (roller 13) on the swivel lever (7) for actuating the gas exchange valve (2),
characterized, that the pivot lever (7) in its by the cam (12) and a return spring (14) caused pivoting movements (arrow "A") by means of a coaxially to the axis of rotation (15) of the control shaft (10) rotatably mounted articulated lever (16), the The articulation point (17) on the swivel lever (7) is determined by an intersection of two circular arcs (K 1 , K 2 ) around the end points (18, 18 ') of a fictitious trajectory 19 of the axis of rotation (15) of the control shaft (10) approximated by an arc is where the fictitious trajectory (19) of the control shaft axis of rotation (15) with the intended four-bar linkage (a, b, c) with the coupling "b" = pivot lever (7) as a kinematically equivalent replacement of the real adjustment of the cam disc (9) for the area the idle stroke curve (6 ') serves whose End points (20, 20 ') determine the centers of the circular arcs (18, 18') of the fictitious trajectory (19). Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß auf der von der Drehachse (21) einer am Übertragungselement (4) angeordneten Rolle (5) ausgehenden Kurbel "c" des Viergelenks (a, b, c) ein Mittelpunkt (M) eines Radiusstrahls (RLH) der Leerhubkurve (6') abgebildet ist, wobei der Mittelpunkt (M) sich beim Verstellen der Kurvenscheibe (9) auf einem Kreisbogen (22) um die Rollen-Drehachse (21) am Übertragungselement (4) jenseits der Steuerwellen-Drehachse (15) bewegt, und daß ferner mit der Kurbel "a" der Abstand des Krümmungsmittelpunktes der Kurvenbahn (Rolle 13) des Schwenkhebels (7) von der Drehachse (24) der auf die Kurvenbahn (Rolle 13) über den Nocken (12) einwirkenden Nockenwelle (11) festgelegt ist. Device according to claim 1, characterized in that a center (M) of a radius beam (R LH ) of the idle stroke curve (6 ') on the crank "c" of the four-bar linkage (a, b, c) extending from the axis of rotation (21) of a roller (5) arranged on the transmission element (4) ) is shown, whereby the center point (M) moves during the adjustment of the cam disc (9) on a circular arc (22) about the roller axis of rotation (21) on the transmission element (4) beyond the control shaft axis of rotation (15), and that furthermore, with the crank "a", the distance of the center of curvature of the cam track (roller 13) of the pivot lever (7) from the axis of rotation (24) of the cam track (roller 13) above the cam (12) acting camshaft (11) is fixed . Vorrichtung nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß jeder Schwenkhebel (7) über einen gemeinsamen Gelenkbolzen (25) mittels zweier, beabstandet angeordneter Anlenkhebeln (16) geführt ist.Device according to claims 1 and 2, characterized in that each swivel lever (7) is guided via a common hinge pin (25) by means of two articulated levers (16) arranged at a distance.
EP00104801A 1999-03-26 2000-03-06 Device for modifying the valve lift in an engine cylinder head Expired - Lifetime EP1039103B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19913742A DE19913742A1 (en) 1999-03-26 1999-03-26 Device for stroke adjustment of a gas exchange valve in the cylinder head of an internal combustion engine
DE19913742 1999-03-26

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Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10144988C1 (en) * 2001-09-12 2002-10-24 Bayerische Motoren Werke Ag Valve drive used in a cylinder head of an I.C. engine comprises a double sided spring consisting of side springs forming a common intermediate side which is held by a positioning element on which two positioning clips are arranged
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WO2004059133A1 (en) * 2002-12-27 2004-07-15 Boesl-Flierl Gerlinde Valve actuation device for variable valve control of gas-exchange valves of an internal combustion engine
WO2004085805A1 (en) * 2003-03-24 2004-10-07 Thyssenkrupp Automotive Ag Device for the actuation of charge exchange valves in reciprocating piston engines
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FR2862083A1 (en) * 2003-11-07 2005-05-13 Siemens Vdo Automotive Heat engines valve controlling device, has sensor associated to electronic control unit having computer for converting information regarding opening and closing states of valve into absolute reference angle with respect to crankshaft
WO2005052326A1 (en) * 2003-10-29 2005-06-09 Ricardo Uk Limited, Engine valvegear
WO2005078244A3 (en) * 2004-02-17 2005-10-13 Honda Motor Co Ltd Valve train for internal combustion engine
EP1619361A1 (en) * 2003-05-01 2006-01-25 Yamaha Hatsudoki Kabushiki Kaisha Valve-moving device for engine
EP1710402A1 (en) * 2003-12-18 2006-10-11 Toyota Jidosha Kabushiki Kaisha Variable valve mechanism
US7207306B2 (en) 2001-12-06 2007-04-24 Denso Corporation Apparatus for controlling engine
CN1322227C (en) * 2001-07-17 2007-06-20 泰森克鲁普汽车股份公司 Variable valve-stroke controller
EP1387048A3 (en) * 2002-08-02 2007-07-25 Bayerische Motoren Werke Aktiengesellschaft Rocking lever for valve drive with variable lift
WO2007110174A1 (en) * 2006-03-25 2007-10-04 Daimler Ag Stroke-transmittting device
EP1561014B1 (en) * 2002-11-16 2008-04-30 Mechadyne plc Engine with variable lift valve mechanism
CN100439664C (en) * 2003-12-12 2008-12-03 宝马股份公司 Electrical valve actuating device comprising a rotary actuator
EP1619362A3 (en) * 2004-07-20 2010-01-27 Bayerische Motoren Werke Aktiengesellschaft Valve train for an internal combustion engine
EP1591632A3 (en) * 2004-04-28 2010-09-08 Honda Motor Co., Ltd. Valve train of internal combustion engine
CN102678221A (en) * 2011-03-08 2012-09-19 朱譞晟 Fully variable valve timing and lift mechanism with double connecting rods
WO2012149921A3 (en) * 2011-04-07 2012-12-27 ECCIng EXPERTENTEAMS Valve train and method for control time variation
WO2013114041A1 (en) 2012-02-02 2013-08-08 Melchior Jean F Device for the variable control of at least one valve, for example for a reciprocating engine
DE10136336B4 (en) * 2001-05-08 2015-11-12 Bayerische Motoren Werke Aktiengesellschaft Mounting aid for mounting and dismounting a leg spring for a variable-stroke valve drive in a cylinder head of an internal combustion engine
CN107956527A (en) * 2016-10-18 2018-04-24 舍弗勒技术股份两合公司 The intermediate push rod of variable valve driving apparatus

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10058539C2 (en) * 2000-11-24 2003-07-17 Konrad Harter Maschb Gmbh Assembly tool for a torsion spring and method for assembling such a torsion spring
DE10061618B4 (en) * 2000-12-11 2004-06-03 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Device for the variable actuation of valves by means of cams for internal combustion engines
US6955146B2 (en) 2000-12-11 2005-10-18 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr System for variably actuating valves in internal combustion engines
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
DE10125082A1 (en) 2001-05-23 2002-11-28 Bayerische Motoren Werke Ag Valve drive device for an internal combustion engine comprises a piston having a device for attaching a tool for mechanical stroke actuation for play-free closing of the contact surfaces of a trailing lever and a valve drive element
DE10140635B4 (en) * 2001-08-13 2010-12-02 Entec Consulting Gmbh Device for variable valve lift adjustment of gas exchange valves of an internal combustion engine
DE10205216B4 (en) * 2002-02-08 2006-04-27 Robert Bosch Gmbh Actuator with variable stroke for an oscillating component
DE10302260B4 (en) * 2003-01-22 2005-03-24 Thyssenkrupp Automotive Ag Device for actuating the charge exchange valves in reciprocating engines
DE10306907B4 (en) * 2003-02-17 2004-12-09 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Valve train with variably adjustable stroke for valves of internal combustion engines
US7107949B2 (en) 2003-02-19 2006-09-19 Iav Gmbh Ingenieurgesellschaft Auto Und Verkeh Device for variable activation of valves for internal combustion engines
DE102005024361A1 (en) * 2005-05-27 2006-12-07 Bayerische Motoren Werke Ag Drive unit for motor vehicle e.g. passenger motor vehicle has first and second internal combustion engine connected by clutch mechanism depending upon power required whereby internal combustion engine has hypocycloidic crank drive
CN101858233B (en) * 2010-04-29 2016-04-20 朱譞晟 Comprise full Variable Valve Time method and the mechanism of speed-changing swing mechanism

Citations (2)

* Cited by examiner, † Cited by third party
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 (en) 1992-07-15 1995-02-09 Bayerische Motoren Werke Ag Valve gear of an internal combustion engine

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3422803A (en) * 1967-06-07 1969-01-21 Gen Motors Corp Internal combustion engine construction and method for operation with lean air-fuel mixtures
DE2629554A1 (en) * 1976-07-01 1978-01-12 Daimler Benz Ag Charge regulator for mixture compression engine - has valve actuator lever moved by cam with adjustable rotation centre
GB2171454A (en) * 1985-02-26 1986-08-28 South Western Ind Res An adjustable valve actuator for an engine
GB8723256D0 (en) * 1987-10-03 1987-11-04 Jaguar Cars Valve mechanisms
GB8920361D0 (en) * 1989-09-08 1989-10-25 Jaguar Cars Valve mechanisms
DE19532334A1 (en) * 1995-09-01 1997-03-06 Bayerische Motoren Werke Ag Variable valve train, especially for internal combustion engines
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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 (en) 1992-07-15 1995-02-09 Bayerische Motoren Werke Ag Valve gear of an internal combustion engine

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* Cited by examiner, † Cited by third party
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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
US6792903B2 (en) 2001-05-03 2004-09-21 Sts System Technology Services Gmbh Mechanical control of the intake valve lift adjustment in an internal combustion engine
DE10122152A1 (en) * 2001-05-08 2002-11-21 Bayerische Motoren Werke Ag Assembly aid for leg spring of variable-lift valve drive releasably connects first and second arms of spring with intermediate arm in prestressed working position
DE10122152B4 (en) * 2001-05-08 2005-07-21 Bayerische Motoren Werke Ag Assembly aid and a method for assembly and disassembly for a leg spring for a variable-stroke valve drive in a cylinder head of an internal combustion engine
DE10136336B4 (en) * 2001-05-08 2015-11-12 Bayerische Motoren Werke Aktiengesellschaft Mounting aid for mounting and dismounting a leg spring for a variable-stroke valve drive in a cylinder head of an internal combustion engine
CN1322227C (en) * 2001-07-17 2007-06-20 泰森克鲁普汽车股份公司 Variable valve-stroke controller
DE10144988C1 (en) * 2001-09-12 2002-10-24 Bayerische Motoren Werke Ag Valve drive used in a cylinder head of an I.C. engine comprises a double sided spring consisting of side springs forming a common intermediate side which is held by a positioning element on which two positioning clips are arranged
US7207306B2 (en) 2001-12-06 2007-04-24 Denso Corporation Apparatus for controlling engine
US7281510B2 (en) 2001-12-06 2007-10-16 Denso Corporation Apparatus for controlling engine
WO2003078802A1 (en) * 2002-03-18 2003-09-25 Ina-Schaeffler Kg Method and device for controlling the cylinder charge of an externally ignited internal combustion engine
WO2003095805A1 (en) * 2002-05-13 2003-11-20 Thyssenkrupp Automotive Ag Drive and displacement system for variable valve-controlled distribution
WO2003106818A1 (en) * 2002-06-13 2003-12-24 Delphi Technologies, Inc Variable valve actuation mechanism with oscillating cam
US6868811B2 (en) 2002-06-13 2005-03-22 Delphi Technologies, Inc. Frameless variable valve actuation mechanism
EP1387048A3 (en) * 2002-08-02 2007-07-25 Bayerische Motoren Werke Aktiengesellschaft Rocking lever for valve drive with variable lift
EP1387049A1 (en) * 2002-08-02 2004-02-04 Bayerische Motoren Werke Aktiengesellschaft Rocker arm for a variable lift valve drive
US7111598B2 (en) 2002-11-14 2006-09-26 Bayerische Motoren Werke Ag Pivoting actuator system for controlling the stroke of a gas exchange valve in the cylinder head of an internal combustion engine
WO2004044392A1 (en) * 2002-11-14 2004-05-27 Bayerische Motoren Werke Aktiengesellschaft Pivoting actuator system for controlling the stroke of a gas exchange valve in the cylinder head of an internal combustion engine
EP1561014B1 (en) * 2002-11-16 2008-04-30 Mechadyne plc Engine with variable lift valve mechanism
US7055478B2 (en) 2002-12-21 2006-06-06 Ina-Schaeffler Kg Intermediate lever for a variable valve train of an internal combustion engine
WO2004057160A1 (en) * 2002-12-21 2004-07-08 Ina-Schaeffler Kg Intermediate lever for a variable valve drive of an internal combustion engine
US7044094B2 (en) 2002-12-27 2006-05-16 Gerlinde Bosl-Flierl Valve-lift device for the variable control of gas-exchange valves of an internal combustion engine
WO2004059133A1 (en) * 2002-12-27 2004-07-15 Boesl-Flierl Gerlinde Valve actuation device for variable valve control of gas-exchange valves of an internal combustion engine
CN100385095C (en) * 2002-12-27 2008-04-30 格林德·博斯尔-弗利尔 Valve-lift device for the variable control of gas-exchange valves of an internal combustion engine
WO2004085805A1 (en) * 2003-03-24 2004-10-07 Thyssenkrupp Automotive Ag Device for the actuation of charge exchange valves in reciprocating piston engines
EP1619361A1 (en) * 2003-05-01 2006-01-25 Yamaha Hatsudoki Kabushiki Kaisha Valve-moving device for engine
EP1619361A4 (en) * 2003-05-01 2008-11-26 Yamaha Motor Co Ltd Valve-moving device for engine
EP1496211A1 (en) * 2003-07-08 2005-01-12 Bayerische Motoren Werke Aktiengesellschaft Rocker arm for a variable lift valve drive
WO2005052326A1 (en) * 2003-10-29 2005-06-09 Ricardo Uk Limited, Engine valvegear
FR2862083A1 (en) * 2003-11-07 2005-05-13 Siemens Vdo Automotive Heat engines valve controlling device, has sensor associated to electronic control unit having computer for converting information regarding opening and closing states of valve into absolute reference angle with respect to crankshaft
CN100439664C (en) * 2003-12-12 2008-12-03 宝马股份公司 Electrical valve actuating device comprising a rotary actuator
EP1710402A1 (en) * 2003-12-18 2006-10-11 Toyota Jidosha Kabushiki Kaisha Variable valve mechanism
EP1710402A4 (en) * 2003-12-18 2009-11-11 Toyota Motor Co Ltd Variable valve mechanism
US7367297B2 (en) 2004-02-17 2008-05-06 Honda Motor Co., Ltd. Valve train for internal combustion engine
CN100406691C (en) * 2004-02-17 2008-07-30 本田技研工业株式会社 Valve system for internal combustion engine
WO2005078244A3 (en) * 2004-02-17 2005-10-13 Honda Motor Co Ltd Valve train for internal combustion engine
US7588003B2 (en) 2004-02-17 2009-09-15 Honda Motor Co., Ltd. Valve train for internal combustion engine
EP1591632A3 (en) * 2004-04-28 2010-09-08 Honda Motor Co., Ltd. Valve train of internal combustion engine
EP1619362A3 (en) * 2004-07-20 2010-01-27 Bayerische Motoren Werke Aktiengesellschaft Valve train for an internal combustion engine
US8136491B2 (en) 2006-03-25 2012-03-20 Daimler Ag Stroke-transmitting device
WO2007110174A1 (en) * 2006-03-25 2007-10-04 Daimler Ag Stroke-transmittting device
CN102678221A (en) * 2011-03-08 2012-09-19 朱譞晟 Fully variable valve timing and lift mechanism with double connecting rods
WO2012149921A3 (en) * 2011-04-07 2012-12-27 ECCIng EXPERTENTEAMS Valve train and method for control time variation
US9091218B2 (en) 2011-04-07 2015-07-28 Kurt Imren Yapici Valve train and method for control time variation
WO2013114041A1 (en) 2012-02-02 2013-08-08 Melchior Jean F Device for the variable control of at least one valve, for example for a reciprocating engine
CN107956527A (en) * 2016-10-18 2018-04-24 舍弗勒技术股份两合公司 The intermediate push rod of variable valve driving apparatus
CN107956527B (en) * 2016-10-18 2022-02-25 舍弗勒技术股份两合公司 Intermediate push rod of variable valve driving device

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ES2224939T3 (en) 2005-03-16
DE50008179D1 (en) 2004-11-18
DE19913742A1 (en) 2000-09-28
EP1039103B1 (en) 2004-10-13
EP1039103A3 (en) 2001-09-26

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