EP2582928B1 - Actuating device for displacing a cam unit - Google Patents
Actuating device for displacing a cam unit Download PDFInfo
- Publication number
- EP2582928B1 EP2582928B1 EP11715538.2A EP11715538A EP2582928B1 EP 2582928 B1 EP2582928 B1 EP 2582928B1 EP 11715538 A EP11715538 A EP 11715538A EP 2582928 B1 EP2582928 B1 EP 2582928B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- engagement pin
- sliding cam
- housing
- permanent
- actuator device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Not-in-force
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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
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
- F01L1/053—Camshafts overhead 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
- 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
- F01L13/0036—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 the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/16—Rectilinearly-movable armatures
- H01F7/1638—Armatures not entering the winding
- H01F7/1646—Armatures or stationary parts of magnetic circuit having permanent magnet
-
- 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
- F01L13/0036—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 the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
- F01L2013/0052—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 the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction with cams provided on an axially slidable sleeve
-
- 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
- F01L2820/03—Auxiliary actuators
- F01L2820/031—Electromagnets
Definitions
- Actuator device of a sliding cam system comprising at least one sliding cam and with an engaging pin projecting from a housing, wherein the housing is arranged on a component of a cylinder head or on the cylinder head of an internal combustion engine, and the engagement pin is contactable with at least one groove of the sliding cam system, the at least one Ausschrampe and wherein the engagement pin has a permanent holding magnet inside the housing and is subsequently dominated by a stationary spool core which can be magnetized by an electrical coil, and the engagement pin is spring-loaded in the direction of the sliding cam.
- Such a generic actuator is from the DE 102 40 774 A1 or the DE 10 2007 052252 known.
- an activation of the engagement pin takes place by energizing the coil, whereby a magnetic field is generated which is opposite to the field of the permanent holding magnet and displaces it.
- the displacement of the field causes a reduced holding force between permanent magnet and spool core, so in that the magnetic field generated by the coil and the force of the spring acting on the engagement pin causes the engagement pin to extend so that it engages in the groove of the sliding cam system and causes displacement of the sliding cam as desired.
- the backward movement of the engagement pin into its inner end position is initiated by the ejection ramp, which is to move the engagement pin against the force of the spring so far and with such acceleration of the sliding cam that the engagement pin with energized the coil by the permanent magnet and its magnetic field on the spool core is held.
- the object of the invention is therefore to improve an actuator with the features described above so that larger tolerances can be absorbed and also a desired lower distance of the engagement pins can be ensured each other.
- the actuating device generates an additional force to the force introduced by the ejection ramp, by means of which the engagement pin reliably reaches the inner end position.
- the tolerances that occur during installation of the electrically actuated device without significant impact on the operation of the engagement pin, so that the tolerances do not need to be kept very tight.
- the dimensions of the built-in housing parts, in particular the permanent holding magnet on the engagement pin can be kept smaller, so that a small distance of the engagement pins to each other can be realized.
- the engagement pin has at its end facing the sliding cam an opening in which an actuating member is slidably disposed, which is loaded in the direction of the sliding cam by means of a return spring.
- the position and the paths of the actuator and the force of the spring is so dimensioned that it is compressed, in particular in the area of the ejection ramp, but extended at the end of the ejection ramp and supported on this, so that the return spring of the actuator such a force generated on the engagement pin, that this overcomes the residual stroke and safely reaches its inner end position.
- the actuating member is formed on the engagement pin as a ball which is installed in a bore of the engagement pin with the associated spring and that the bore is narrowed at its end to a secure hold of the ball against falling out sure.
- the constriction can be done by caulking the edge of the hole.
- the engagement pin at its end facing the sliding cam and the ejection ramp in the region of its outlet to the high circle each have a permanent magnet and a permanent magnet and that these permanent magnets are installed with oppositely directed polarity facing each other.
- This embodiment of the invention ensures that the repulsive magnetic forces of the permanent magnet and the permanent magnet in the end region of the ejection ramp generate such a force that the engagement pin overcomes the resulting even at unfavorable tolerance residual stroke and moves securely in its inner end position.
- the permanent holding magnet is surrounded on the engagement pin within the housing by a retaining cap or a retaining plate which is fastened to the engagement pin in order to fix the permanent retaining magnet securely on the engagement pin.
- FIGS. 1 to 7 is, as far as shown in detail, 1 denotes a camshaft of a reciprocating internal combustion engine, on the rotatably but slidably a sliding cam 2 is arranged, which has at least one groove 3 in addition to the cams for the gas exchange valves, which includes an ejection 4.
- the ejection ramp 4 extends to a designated 18 high circle of the sliding cam 2 in the region of the groove 3.
- a generally designated 5 actuator which has a housing 6, a coil 7 with a spool core 8 and an engagement pin 9 ,
- the engagement pin 9 is arranged radially movable within the housing 6 with respect to the groove 3 and has in the interior a spring 10 which biases the engagement pin 9 in the direction of the sliding cam 2.
- the spool core 8 is adjacent to the engagement pin 9, a permanent holding magnet 11 is fixed, the magnetic force is greater than the force of the spring 10, which is supported at its inner end to the spool core 8.
- the permanent holding magnet 11 is enclosed by a retaining cap 12 which fixes it to the engagement pin 9.
- the engagement pin 9 further has at its the sliding cam 2 end facing a bore 13 in which a return spring 14 is installed, which loads a ball 15 in the direction of the sliding cam 2.
- the ball 15 stands so far that it is pressed at least in the region of the ejection ramp 4 against the force of the return spring 14 in the bore 13, so that the return spring stores force that relaxes at the end of the ejector ramp and accelerates the engagement pin 9 so strong in that it arrives safely in the inner end position.
- FIGS. 4 and 5 It can also be seen that larger tolerances are also bridged here.
- each two engagement pins 9 can be installed close to each other and even a distance of only 5 mm can be achieved.
- the ends of the engagement pins 9 are formed according to the previously described embodiments of the invention and equipped with permanent magnets 16 or balls 15.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Valve Device For Special Equipments (AREA)
Description
Aktorvorrichtung eines Schiebenockensystems, mit zumindest einem Schiebenocken und mit einem aus einem Gehäuse herausragenden Eingriffsstift, wobei das Gehäuse an einem Bauteil eines Zylinderkopfes oder an dem Zylinderkopf einer Brennkraftmaschine angeordnet ist, und der Eingriffsstift mit zumindest einer Nut des Schiebenockensystems kontaktierbar ist, die zumindest eine Auswurframpe aufweist, und wobei der Eingriffsstift innerhalb des Gehäuses einen Permanenthaltemagneten aufweist und daran anschließend von einem feststehenden durch eine elektrische Spule magnetisierbaren Spulenkern beherrscht ist und der Eingriffsstift in Richtung zum Schiebenocken federbelastet ist.Actuator device of a sliding cam system, comprising at least one sliding cam and with an engaging pin projecting from a housing, wherein the housing is arranged on a component of a cylinder head or on the cylinder head of an internal combustion engine, and the engagement pin is contactable with at least one groove of the sliding cam system, the at least one Auswurframpe and wherein the engagement pin has a permanent holding magnet inside the housing and is subsequently dominated by a stationary spool core which can be magnetized by an electrical coil, and the engagement pin is spring-loaded in the direction of the sliding cam.
Eine derartiger gattungsbildender Aktor ist aus der
Die Rückwärtsbewegung des Eingriffsstiftes in seine innere Endlage wird durch die Auswurframpe eingeleitet, die den Eingriffsstift gegen die Kraft der Feder soweit und mit solcher Beschleunigung von dem Schiebenocken weg bewegen soll, dass der Eingriffsstift bei abgeschalteter Bestromung der Spule durch den Permanenthaltemagneten und dessen Magnetfeld am Spulenkern festgehalten wird.The backward movement of the engagement pin into its inner end position is initiated by the ejection ramp, which is to move the engagement pin against the force of the spring so far and with such acceleration of the sliding cam that the engagement pin with energized the coil by the permanent magnet and its magnetic field on the spool core is held.
Problematisch bei dieser gattungsgemäßen Ausgestaltung ist, dass je nach Toleranzlage des Aktors radial zum Schiebenocken die Bewegung und Beschleunigung des Eingriffsstiftes durch die Auswurfsrampe nicht ausreicht, dass dieser die innere Position erreicht und durch den Permanenthaltemagneten gegen die Kraft der Feder stabilisiert wird.The problem with this generic embodiment is that depending on the tolerance position of the actuator radially to the sliding cam movement and acceleration of the engagement pin by the ejection ramp is insufficient that this reaches the inner position and is stabilized by the permanent magnet against the force of the spring.
Weiterhin besteht das Problem, dass bei Schiebenockensystemen mit drei oder mehreren Schiebenocken mindestens zwei Eingriffsstifte vorgesehen sein müssen. Dabei wird ein geringer Abstand der Eingriffsstifte, der durch den Abstand der Gaswechselventile, den Abstand der Zylinder der Brennkraftmaschine und die Anzahl der Schiebenocken vorgegeben ist, verlangt. Durch den geringen Abstand ist das im Stand der Technik beschriebene Design des Aktors nicht mehr in der Lage den Eingriffsstift mit ausreichender Geschwindigkeit und Kraft zu bewegen und zu halten.Furthermore, there is the problem that in sliding cam systems with three or more sliding cam at least two engagement pins must be provided. In this case, a small distance of the engagement pins, which is determined by the distance of the gas exchange valves, the distance of the cylinder of the internal combustion engine and the number of sliding cam is required. Due to the short distance described in the prior art design of the actuator is no longer able to move the engagement pin with sufficient speed and force and hold.
Aufgabe der Erfindung ist es daher, einen Aktor mit den eingangs beschriebenen Merkmalen so zu verbessern, dass größere Toleranzen aufgefangen werden können und auch ein gewünschter geringerer Abstand der Eingriffsstifte zueinander sichergestellt werden kann.The object of the invention is therefore to improve an actuator with the features described above so that larger tolerances can be absorbed and also a desired lower distance of the engagement pins can be ensured each other.
Die Aufgabe der Erfindung wird durch die Merkmale des Anspruchs 1 gelöst.The object of the invention is solved by the features of claim 1.
Die Betätigungseinrichtung erzeugt zu der durch die Auswurframpe eingeleiteten Kraft eine Zusatzkraft, durch die der Eingriffsstift die innere Endlage sicher erreicht. Dadurch sind die Toleranzen, die beim Einbau der elektrisch betätigbaren Vorrichtung entstehen, ohne nennenswerten Einfluss auf die Betätigung des Eingriffsstiftes, sodass die Toleranzen nicht besonders eng gehalten werden müssen. Des Weiteren können die Abmessungen der im Gehäuse einbebauten Teile, insbesondere des Permanenthaltemagneten am Eingriffsstift kleiner gehalten werden, so dass auch ein geringer Abstand der Eingriffsstifte zueinander verwirklicht werden kann.The actuating device generates an additional force to the force introduced by the ejection ramp, by means of which the engagement pin reliably reaches the inner end position. As a result, the tolerances that occur during installation of the electrically actuated device, without significant impact on the operation of the engagement pin, so that the tolerances do not need to be kept very tight. Furthermore, the dimensions of the built-in housing parts, in particular the permanent holding magnet on the engagement pin can be kept smaller, so that a small distance of the engagement pins to each other can be realized.
In einer vorteilhaften Ausgestaltung der Erfindung wird vorgeschlagen, dass der Eingriffsstift an seinem dem Schiebenocken zugewandten Ende eine Öffnung aufweist, in der ein Betätigungsglied verschiebbar angeordnet ist, das in Richtung zum Schiebenocken mittels einer Rückstellfeder belastet ist. Dabei ist die Lage und der Wege des Betätigungsgliedes und die Kraft der Feder so bemessen, dass es, insbesondere im Bereich der Auswurframpe, zusammengedrückt wird, sich aber am Ende der Auswurframpe verlängert und an dieser abstützt, so dass die Rückstellfeder des Betätigungsgliedes eine solche Kraft auf den Eingriffsstift erzeugt, dass dieser den Resthub überwindet und sicher in seine innere Endlage gelangt.In an advantageous embodiment of the invention it is proposed that the engagement pin has at its end facing the sliding cam an opening in which an actuating member is slidably disposed, which is loaded in the direction of the sliding cam by means of a return spring. The position and the paths of the actuator and the force of the spring is so dimensioned that it is compressed, in particular in the area of the ejection ramp, but extended at the end of the ejection ramp and supported on this, so that the return spring of the actuator such a force generated on the engagement pin, that this overcomes the residual stroke and safely reaches its inner end position.
In weiterer Ausgestaltung der Erfindung wird vorgeschlagen, dass das Betätigungsglied am Eingriffsstift als Kugel ausgebildet ist, die in einer Bohrung des Eingriffsstiftes mit der zugeordneten Feder eingebaut ist und dass die Bohrung an ihrem Ende verengt ist, um einen sicheren Halt der Kugel gegen Herausfallen sicherzustellen. Die Verengung kann durch eine Verstemmung des Randes der Bohrung erfolgen.In a further embodiment of the invention it is proposed that the actuating member is formed on the engagement pin as a ball which is installed in a bore of the engagement pin with the associated spring and that the bore is narrowed at its end to a secure hold of the ball against falling out sure. The constriction can be done by caulking the edge of the hole.
In einer alternativen Ausgestaltung der Erfindung wird vorgeschlagen, dass der Eingriffsstift an seinem dem Schiebenocken zugewandten Ende und die Auswurfsrampe im Bereich ihres Auslaufs zum Hochkreis je einen Permanentmagneten und einen Permanentgegenmagneten aufweisen und dass diese Permanentmagnete mit einander zugerichteter gegensinniger Polung eingebaut sind.In an alternative embodiment of the invention, it is proposed that the engagement pin at its end facing the sliding cam and the ejection ramp in the region of its outlet to the high circle each have a permanent magnet and a permanent magnet and that these permanent magnets are installed with oppositely directed polarity facing each other.
Durch diese Ausgestaltung der Erfindung wird erreicht, dass die sich abstoßenden Magnetkräfte des Permanentmagneten und des Permanentgegenmagneten im Endbereich der Auswurfsrampe eine solche Kraft erzeugen, dass der Eingriffsstift den auch bei ungünstiger Toleranz entstehenden Resthub überwindet und sicher in seine innere Endlage bewegt.This embodiment of the invention ensures that the repulsive magnetic forces of the permanent magnet and the permanent magnet in the end region of the ejection ramp generate such a force that the engagement pin overcomes the resulting even at unfavorable tolerance residual stroke and moves securely in its inner end position.
Weiterhin ist es zweckmäßig, wenn der Permanenthaltemagnet am Eingriffsstift innerhalb des Gehäuses von einer Haltekappe oder einem Halteblech umgeben ist, das am Eingriffsstift befestigt ist, um den Permanenthaltemagneten sicher am Eingriffsstift festzulegen.Furthermore, it is expedient if the permanent holding magnet is surrounded on the engagement pin within the housing by a retaining cap or a retaining plate which is fastened to the engagement pin in order to fix the permanent retaining magnet securely on the engagement pin.
Zur weiteren Erläuterung der Erfindung wird auf die Zeichnungen verwiesen, in denen Ausführungsbeispiele der Erfindung vereinfacht dargestellt sind.For further explanation of the invention reference is made to the drawings, in which embodiments of the invention are shown in simplified form.
Es zeigen:
- Fig. 1:
- einen Schnitt durch einen Schiebenocken und einen zugeordneten Aktor,
- Fig. 2 u. 3:
- Schnitte entsprechend
Fig. 1 , in denen unterschiedliche Einbautoleranzen dargestellt sind, - Fig. 4 u. 5:
- Schnitte mit verschiedenen Toleranzlagen entsprechend den
Fig. 2 und 3 in modifizierter Ausgestaltung der Erfindung, - Fig. 6 u. 7:
- Schnitte durch Aktoren, die zu einer Baueinheit zusammengefasst sind, wobei die Eingriffsstifte dicht nebeneinander liegen.
- Fig. 1:
- a section through a sliding cam and an associated actuator,
- Fig. 2 u. 3:
- Cuts accordingly
Fig. 1 in which different installation tolerances are shown, - Fig. 4 u. 5:
- Cuts with different tolerance positions according to the
FIGS. 2 and 3 in a modified embodiment of the invention, - Fig. 6 u. 7:
- Cuts by actuators, which are combined to form a unit, wherein the engagement pins are close together.
In den
Die Kugel 15 steht dabei soweit vor, dass sie zumindest im Bereich der Auswurframpe 4 gegen die Kraft der Rückstellfeder 14 in die Bohrung 13 eingedrückt wird, so dass die Rückstellfeder Kraft speichert, die sich am Ende der Auswurfsrampe entspannt und den Eingriffsstift 9 so stark beschleunigt, dass dieser sicher in die innere Endlage gelangt.The
Dadurch werden, wie den
In den Ausführungsbeispielen gemäß den
Wie den
In den
Die Enden der Eingriffsstifte 9 sind entsprechend den zuvor beschriebenen Ausgestaltungen der Erfindung ausgebildet und mit Permanentmagneten 16 oder Kugeln 15 ausgestattet.The ends of the
- 11
- Nockenwellecamshaft
- 22
- Schiebenockenpushers
- 33
- Nutgroove
- 44
- Auswurframpeejection ramp
- 55
- Aktoractuator
- 66
- Gehäusecasing
- 77
- SpuleKitchen sink
- 88th
- SpulenkernPlunger
- 99
- Eingriffsstiftengagement pin
- 1010
- Federfeather
- 1111
- PermanenthaltemagnetPermanent holding magnet
- 1212
- Haltekapperetaining cap
- 1313
- Bohrungdrilling
- 1414
- RückstellfederReturn spring
- 1515
- KugelBullet
- 1616
- Permanentmagnetpermanent magnet
- 1717
- PermanentgegenmagnetPermanent counter magnet
- 1818
- Hochkreishigh circle
Claims (6)
- Actuator device of a sliding cam system, having at least one sliding cam (2) and having an engagement pin (9) which projects out of a housing (6), wherein the housing (6) can be fastened to a component of a cylinder head or to the cylinder head of an internal combustion engine, and the engagement pin (9) can be placed in contact with at least one groove (3) of the sliding cam system, which groove has at least one throw-out ramp (4) which is oriented in the direction of the housing (6) and which brings about a force acting on the engagement pin (9), and wherein the engagement pin (9) has, within the housing (6), a permanent holding magnet (11) and, adjoining the latter, is controlled by a static coil core (9) which can be magnetized by an electrical coil (7), and the engagement pin (9) is spring-loaded in the direction of the sliding cam (2), characterized in that, at least at that end region of the engagement pin (9) which faces toward the sliding cam (2), there is installed an actuating device which is active in the region in which the throw-out ramp (4) runs out at the high circle (18), which actuating device generates an auxiliary force - which arises in addition to the force brought about by the throw-out ramp (4) - on the engagement pin (9) in the direction of the housing (6), by means of which auxiliary force the engagement pin reliably reaches an inner end position.
- Actuator device according to Claim 1, characterized in that the actuating device comprises, on that end of the engagement pin (9) which faces toward the sliding cam (2), an opening in which there is displaceably arranged an actuating element which is loaded in the direction of the sliding cam (2) by means of a restoring spring (14).
- Actuator device according to Claim 2, characterized in that the actuating element is a ball (15) which is arranged in a bore (13) and the movement of which in the direction of the sliding cam (2) is limited by a constriction at the end of the bore (13).
- Actuator device according to Claim 1, characterized in that the actuating device has, at that end of the engagement pin (9) which faces toward the sliding cam (2) and in the region in which the throw-out ramp (4) runs out at the high circle (18), respectively one permanent magnet (16) and permanent counter-magnet (17), and in that said permanent magnets are installed with opposite poles directed toward one another.
- Actuator device according to one of the preceding claims, characterized in that the permanent holding magnet (11) on the engagement pin (9) is surrounded by a holding cap (12) which is fastened to the engagement pin (9).
- Actuator device according to one of the preceding claims, characterized in that the sliding cam system has three or more cams and a corresponding number of grooves (3), and in that at least two actuators (5) are arranged adjacent to one another within a housing (6).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010024030A DE102010024030A1 (en) | 2010-06-16 | 2010-06-16 | Actuator device for adjusting a sliding cam system |
PCT/EP2011/056295 WO2011157466A1 (en) | 2010-06-16 | 2011-04-20 | Actuator device for adjusting a sliding cam system |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2582928A1 EP2582928A1 (en) | 2013-04-24 |
EP2582928B1 true EP2582928B1 (en) | 2016-03-23 |
Family
ID=44487186
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11715538.2A Not-in-force EP2582928B1 (en) | 2010-06-16 | 2011-04-20 | Actuating device for displacing a cam unit |
Country Status (4)
Country | Link |
---|---|
US (1) | US8616167B2 (en) |
EP (1) | EP2582928B1 (en) |
DE (1) | DE102010024030A1 (en) |
WO (1) | WO2011157466A1 (en) |
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DE102020129626A1 (en) | 2020-11-10 | 2022-05-12 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Valve train for an internal combustion engine and internal combustion engine |
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DE102008024086A1 (en) | 2008-05-17 | 2009-11-19 | Daimler Ag | Valve drive device |
DE102008060169B4 (en) * | 2008-11-27 | 2023-02-09 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Valve train for gas exchange valves of an internal combustion engine |
DE102008060167B4 (en) | 2008-11-27 | 2021-05-27 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Valve train of an internal combustion engine |
DE102009008422A1 (en) | 2009-02-11 | 2010-08-12 | Daimler Ag | Ventiltriebumschaltvorrichtung |
-
2010
- 2010-06-16 DE DE102010024030A patent/DE102010024030A1/en not_active Withdrawn
-
2011
- 2011-04-20 WO PCT/EP2011/056295 patent/WO2011157466A1/en active Application Filing
- 2011-04-20 US US13/701,900 patent/US8616167B2/en not_active Expired - Fee Related
- 2011-04-20 EP EP11715538.2A patent/EP2582928B1/en not_active Not-in-force
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020129626A1 (en) | 2020-11-10 | 2022-05-12 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Valve train for an internal combustion engine and internal combustion engine |
DE102020129626B4 (en) | 2020-11-10 | 2022-05-19 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Valve train for an internal combustion engine and internal combustion engine |
Also Published As
Publication number | Publication date |
---|---|
EP2582928A1 (en) | 2013-04-24 |
DE102010024030A1 (en) | 2011-12-22 |
WO2011157466A1 (en) | 2011-12-22 |
US20130098318A1 (en) | 2013-04-25 |
US8616167B2 (en) | 2013-12-31 |
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