EP2176524A1 - Dispositif d'inversion de l'entraînement de soupape d'un moteur à combustion interne - Google Patents

Dispositif d'inversion de l'entraînement de soupape d'un moteur à combustion interne

Info

Publication number
EP2176524A1
EP2176524A1 EP08801531A EP08801531A EP2176524A1 EP 2176524 A1 EP2176524 A1 EP 2176524A1 EP 08801531 A EP08801531 A EP 08801531A EP 08801531 A EP08801531 A EP 08801531A EP 2176524 A1 EP2176524 A1 EP 2176524A1
Authority
EP
European Patent Office
Prior art keywords
switching
unit
units
switching means
internal combustion
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
EP08801531A
Other languages
German (de)
English (en)
Other versions
EP2176524B1 (fr
Inventor
Alexander Von Gaisberg-Helfenberg
Jens Meintschel
Thomas Stolk
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mercedes Benz Group AG
Original Assignee
Daimler AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Daimler AG filed Critical Daimler AG
Publication of EP2176524A1 publication Critical patent/EP2176524A1/fr
Application granted granted Critical
Publication of EP2176524B1 publication Critical patent/EP2176524B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • F01L1/0532—Camshafts overhead type the cams being directly in contact with the driven valve
    • 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
    • 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

Definitions

  • the invention relates to a Brennkraftmaschinenventilt ⁇ ebumschaltvornchtung according to the preamble of claim 1
  • the invention has the object of providing a valve switching device in such a way that at a high reliability both volume and weight as well as costs can be saved
  • the task is solved in each case by the features of the independent claims, further embodiments of the invention can be taken from the dependent claims
  • the invention is based on an internal combustion engine valve drive switching device with a switching unit
  • the switching unit has at least one export unit with at least two switching units and at least one switching means, which is provided to actuate the at least two switching units at least partially offset in time in at least one operating mode.
  • the number of required switching means can thereby be reduced
  • Switchching unit is to be understood as meaning in particular a unit which is intended to effect a switching operation of at least one valve.
  • the term "provided” should be understood to mean specially equipped and / or designed.
  • a “unit” is to be understood as meaning in particular a unit which by virtue of a signal at least one process ausvigt once and which in particular from mechanical, quantum mechanical, electrical and / or electromagnetic components and in particular also from electronic components, if they do not affect the process at least insignificantly and particularly advantageous, may be formed under a "switching unit”
  • a unit can be understood, which is intended to effect a switching operation, in particular also in cooperation with at least one switching means or another unit.
  • a “switching means” is to be understood in particular as a means which is intended to initiate a switching operation, in particular also in cooperation with at least one switching unit or another unit
  • the export unit is provided to actuate the switching units independently of one another in at least one operating mode, at least as a function of where the switching elements are relative to the switching means.
  • the number of switching means required can be further reduced below that of the export unit a switching unit "actuated” is intended to mean in particular a cooperation and / or interaction of the export unit or parts of the export unit with the switching unit, which can cause a switching operation, in that the export unit actuates the switching units "independently” is meant in particular in that an actuation of a switching unit by the export unit does not influence an actuation of another switching unit by the export unit.
  • An "operating mode” is to be understood in particular as a type of operation
  • the export unit can comprise an electronic evaluation unit and be provided to execute a second switching operation on the basis of at least one signal and then dependent on an electronic evaluation.
  • the execution unit is provided in a particularly advantageous manner for a first switching operation and then independently according to at least one signal
  • a "signal" should be understood to mean, in particular, a triggering operation and / or a character, such as a current pulse with a defined meaning and / or a loading and / or positioning of a mechanical component initiated from outside the export unit in a switching position and / or mechanical Interaction can be understood.
  • a “triggering operation” is to be understood in particular as meaning a mechanical, electrical, quantum-mechanical and / or electromechanical process, which in particular can lead to a specific positioning of a switching means be understood.
  • a switching operation takes place “after” another switching operation, that the switching operations take place at least partially offset in time and / or are particularly advantageous in terms of overlapping with respect to time.
  • An electronic “evaluation” is intended in particular to be an electronic classification and / or evaluation a state and / or signal and / or operation. By performing "independently" of an electronic evaluation, it is intended in particular to mean an automated execution in a mechanical, quantum mechanical, electrical and / or electromagnetic manner.
  • the execution unit is at least partially formed as a mechanical unit. This can save design costs.
  • the execution unit is at least partially designed as a transmission.
  • the transmission can be designed in particular as a cam gear.
  • the expert appear appropriate sense gearbox conceivable, such as gear transmission, lever mechanism, hydraulic transmission, etc.
  • the execution unit is provided to effect a switching of a valve train and / or a change of at least one valve lift curve and / or switching off at least one valve and / or at least one change of operating modes of an internal combustion engine.
  • a simple and efficient operation of the valves of a valve train can be achieved.
  • a "valve train” is to be understood in particular as an assembly intended to at least partially permit a gas exchange in internal combustion engines based on a reciprocating piston engine and / or at least one function of the device and / or the interaction between different modes of operation.
  • valve lift curve is intended to mean the graph of the function obtained when the valve lift, which is relative to the cylinder, to which the valve is assigned, measured above the angle of rotation of the Ventilt ⁇ eb associated drive shaft in a Cartesian coordinate system orders under "different operating modes” should be understood in particular the operation of valves with different timing and / or valve lift curves Under a “change of operating modes” should here in particular the operation of the internal combustion engine with full load, with partial load, in Edzundungsbet ⁇ eb, with Zyhnderabscnies, with early or late inlet conclusion or other, the skilled person appear to be reasonable modes of operation
  • the output voltage ⁇ azu vorgesenen in response to at least one change in position of at least one of the switching units relative to the switching means to actuate one of the switching units
  • the number of required switching units and the number of necessary switching means can be reduced
  • switching direction is to be understood in particular a direction in which a component in an at least partially by the switching means
  • superimposed movements such as translational and rotational movements are also conceivable
  • the switching means corresponds to the switching units and the switching units are at least partially decoupled in their movement.
  • the switching units can be moved in different directions relative to the switching means.
  • one switching unit can rest relative to the switching means while another switching unit moves relative to the switching means
  • a switching unit "corresponding" to the switching means is understood to mean a switching unit which is designed in such a way that it interacts with the switching unit Wegmittei allows a switching operation.
  • Switching units which are at least partially "decoupled" in their movement should, in particular, be understood as switching units for which at least one movement of a switching unit relative to the other switching unit runs independently of the latter in at least one operating mode.
  • the execution unit is provided to actuate the switching units in at least one operating mode at the same time. This can be achieved in a structurally simple manner that a switching means can actuate two switching units at least partially decoupled.
  • the execution unit has at least two control means, which are positioned on mutually facing ends of the at least two switching units of the execution unit.
  • the extent of the individual components can be reduced, meaning in particular a means for controlling a process, in particular for controlling a switching process, by a "sieve means " .
  • the switching units may be associated with different valves, which in particular may be associated with different cylinders.
  • the switching units can be associated with only one valve.
  • control link is to be understood in particular at least one molding or several moldings together with their boundaries, which are intended to guide a switching means in at least one switching operation, and individually or together over a certain angular range, as preferably over more than 10 °, advantageously over more than 80 ° and particularly preferably over more than 180 °, in the circumferential direction of a drive shaft or connected to a drive shaft component, wherein the formations may be spatially separated from each other and this spatial separation can be canceled by a switching operation
  • a "formation” is to be understood as meaning an elevation or a recess which may have various forms of extension which appear expedient to the person skilled in the art, such as, in particular, an elongated extension shape.
  • a molding may in particular be a slot or a groove.
  • a slot is meant a narrow recess can be understood.
  • a “survey” is meant in particular an elevated location compared to the area surrounding the site and / or a bulge meant.
  • the execution unit has at least one control link, which is formed by at least two of the switching units. This can be realized in a particularly simple manner, a switching device for switching operations in which the switching units are involved.
  • control link is designed such that the switching units can be actuated by the switching means in a defined switching sequence.
  • control scenes can be used in a continuous operation.
  • a "defined switching sequence” should be understood in particular to take place according to a defined sequence and at least partially offset in time and / or separate switching operations, which in particular are also suitable for permanent operation with at least two defined defined switching sequences.
  • the execution unit has at least one control link, which is provided to effect a switching of a valve drive by interacting with the switching means.
  • the execution unit has at least one control link, which is provided to effect a switching of a valve drive by interacting with the switching means.
  • the switching unit has at least one control means, wherein the control means is provided to change due to an interaction with the switching means at least one function of the switching unit and / or the switching means.
  • a compact switching structure can be achieved.
  • a "function" is meant in particular a mode of action and in particular a mode of action in an interaction with another structural unit, which may be, for example, the switching means or the switching unit.
  • an advantage may be achieved by the function of immersing the switching means in the switching unit and / or pushing out the switching means from the switching unit and / or operating the switching unit by the switching means and / or switching the switching means from a switching unit another switching unit and / or calming the movement of a switching unit is.
  • immersing the switching means in the switching unit it is intended in particular to mean retraction of the switching means in the form of an elevation or pin into a groove or slot of a switching unit or designed as a pin switching means by pushing out of the groove or the slot of the switching unit to be understood.
  • a “calming down" of the movement of a switching unit should also be understood to mean an immobilization of the switching unit relative to the switching means after a movement of the switching unit relative to the switching means.
  • the execution unit has at least one control link, which is intended to be acted upon by the switching means in at least one radial direction.
  • This can be a structurally simple interaction between switching means and Steuerkuadore be achieved.
  • a "radial direction” is to be understood as meaning, in particular, a direction radial with respect to a drive shaft.
  • Actuating" the control link by the switching means should in particular mean that the switching means is intended, in the case of a movement, to form a control link apply and / or act with a force.
  • the execution unit has a camshaft and at least a majority of those shifting units, by which valve lift curves of valves associated with the camshaft are changeable, and that the shifting units are intended to be actuated by the shifting means.
  • This can be a coherent switching achieved and thus a malfunction of individual cams are prevented.
  • at least fifty percent, in particular at least seventy percent and particularly advantageously at least ninety percent of the total number should be meant by a "majority.”
  • a valve should be "assigned" to a camshaft, in particular, when the valve is directly or indirectly opened by means of the camshaft and / or closed.
  • the switching means is designed as a switching pin.
  • the switching means is designed as a switching pin.
  • the switching unit and at least one switching means are provided to interact with each other by an axial displacement of the switching unit relative to the Switching center! and thereby cause a switching of a valve train.
  • the valve train can be switched in a structurally simple way.
  • the switching unit is designed as an axially displaceable portion of a camshaft with cams with at least partially different contour. In this way, the switching unit can immediately perform a switching operation on a cam.
  • a "cam” is intended in particular to mean a curve-like projection on a shaft which rotates in an operating mode and which may be in the form of a camshaft. Teasing and / or a cam to be understood.
  • FIGS. 7a and 7b show an intermediate state at a fourth step of FIG
  • FIGS. 14a and 14b show an intermediate state at a third step of FIG
  • FIG. 15a and 15b an intermediate state at a fourth step of
  • FIGS. 16a and 16b show an intermediate state at a fifth step of FIG
  • FIGS. 19a and 19b show an intermediate state at an eighth step of FIG.
  • the execution unit 38 comprises two switching means 3, 4 formed by a respective switching pin, which can be actuated by the actuators 64, 65 or can be moved out of the actuators 64, 65 Delivery unit 38 Switching units 1, 2, which are parts of the camshaft 46
  • the switching units 1, 2 have a common Main extension direction, which coincides with a main extension direction of the camshaft 46.
  • the switching means 3, 4 also have a common main extension direction which extends radially to the camshaft 46 and to the switching units 1, 2.
  • the switching means 3, 4 are each provided to actuate the two switching units 1, 2.
  • a switching means 3, 4 which takes place in its main direction of extension to the switching units 1, 2, first a loading of a switching unit 1, 2 and then an interaction between the switching means 3, 4 and the switching units 1, 2 takes place, which is described with reference to Figures 4a to 19b and due to which an axial displacement of the switching units 1, 2 takes place relative to the switching means 3, 4 along the main extension direction of the switching units 1, 2.
  • With the axial displacement of the switching units 1, 2 takes place an axial displacement of belonging to the Schaitmaschineen 1, 2 cams 7, 6, 46, 50, 26, 27, 28, 29, 30, 31 instead.
  • the cams 7, 8 and 48, 50 have a different contour such that the maximum radial extent of the cams 8, 50 differs from the maximum radial extent of the cams 48, 7. Since the camshaft 46 comprises only the cams 7, 8, 48, 50, 26, 27, 28, 29, 30, 31, both switching means 3, 4 can each have those switching units 1, 2, through which valve lift curves of valves, that of the camshaft 46 are assigned, are changeable, press.
  • the switching unit 1 has a control means 52, which is formed by sections 9, 11, 13, 16, 18 (see Figure 3), which are formed by four grooves. Furthermore, the switching unit 2 has a control means 54, which is formed by sections 10, 12, 14, 15, 17 (see Figure 3), which are formed by four grooves.
  • the control means 52, 54 are positioned in end regions or on ends 56, 58 of the shunting units 1, 2, which face each other in the main extension direction of the camshaft 46 and are directly adjacent.
  • the control means 52, 54 form two control slots 5, 6, which are arranged one behind the other in the main direction of extension of the camshaft 46.
  • the control scenes 5, 6 are thus each formed by the two switching units 1, 2.
  • the switching means 3, 4 are arranged so that they can act on the control gates 5, 6 in the radial direction in a switching operation.
  • the switching means 3, 4 are along the main extension direction of the camshaft 46 in the same Sequence as the Steuerkuiissen 6, 5 arranged one behind the other.
  • the Druckmittei 3, the control link 6 and the switching means 4 act on the control link 5.
  • FIG. 2 shows a development of one of the control slots 5 or 6, which extends over more than one camshaft revolution, namely approximately 540 °. In principle, other angle ranges which appear reasonable to the person skilled in the art are also conceivable.
  • each of the control slots 5, 6 allows a change of the switching means 3, 4 during a switching operation from one switching unit 2 to another switching unit 1 and back.
  • Figure 3 shows schematically a plan view of the developments of the control blocks 5 and 6, which form a transmission 42, which is designed as a cam gear.
  • the settlement of the two Steuerkuiissen 5, 6 is formed by two L-shaped Teiien a settlement of the switching units 1, 2, which have a rectangular shape between two switching operations, in which different switching means 3, 4 are involved.
  • An L-shaped part in each case comprises two halves of the control cams 5, 6, which belong to different control cams 5, 6.
  • the control blocks 5, 6 have the sections 9 to 18, which cause different functions of the switching means 3, 4 and / or the switching units 1, 2 in interaction with the switching means 3, 4, wherein the different sections 9 to 18 of the control blocks 5, 6 come into operative connection with the switching means 3, 4 as a function of the angle of rotation of the camshaft 46 (see FIG. 1).
  • the sections 9 to 18 are immersion sections 9 and 10, operating sections 11 and 12, Ausschiebeabête 13 and 14, transition sections 15 and 16 and reassurance sections 17 and 18.
  • the functions is a dipping of the switching means 3, 4 in the immersion section 9, 10 of the control link 5 or 6, a pushing out of the switching means 3, 4 from a Ausschiebeabêt 13, 14 of the control link 5 or 6, operating at least one of the switching units 1 or 2, by the switching unit 1, 2 on the in the operating section 11, 12 located switching means 3, 4 is shifted, a change of the switching means 3, 4 from one of the switching units 1, 2 to another switching unit 1, 2 and a calming the switching movement of the switching units 1, 2.
  • the switching means 3, 4 come depending on the direction of rotation of Camshaft 46 with the sections 9 to 18 in different orders in operative connection.
  • FIGS. 4a, 4b to 11a, 11b and 12a, 12b to 19a, 19b show, by means of individual intermediate states, a switchover of valve drives, which are actuated by the cams 7, 8, 48, 50 of the camshaft 46 (see FIG Displacement of the two switching units 1, 2, wherein in the figures 4a, 4b to 11a, 11b, the switching operation to the right and in Figs. 12a, 12b to 19a, 19b, the switching operation is shown to the left. In the switching operation to the left, the switching units 1, 2 move such that the ends 56, 58 move relative to the switching means 3, 4 in the direction of the cams 48, 50 in a main extension direction 62 (see FIGS.
  • the switching units 1, 2 move in a direction opposite main extension direction 60 (see Figures 5 ⁇ and 5b).
  • the switching operations to the right and to the left each refer to two switching operations in which the individual switching units 1, 2 are moved relative to the switching means 3, 4 in the axial direction.
  • the switching operation is executed to the right.
  • the right-hand switching means 3 is retracted by the actuator 65 (see FIG. 1) into the immersion section 9 of the control link 6 on the basis of a signal given by the actuator 65 in the form of a magnetic field.
  • the right-hand switching means 3 is located in the actuating section 12 of the control link 6 and starts to shift the right-hand switching unit 2 in the main extension direction 60 of the camshaft 46 (see FIG. 1), which is an axial direction
  • the displacement of the right-hand switching unit 2 is calmed and is then completed.
  • the switching means 3 After shifting the switching unit 2, which is a position change relative to the switching means 3, 4, the switching means 3 actuates the switching unit 1.
  • the right switching means 3 is just before the operating portion 11 of the control link 6 of the switching unit 1.
  • the right-hand switching means 3 is located in the actuating section 11 of the control link 6 of the left switching unit 1 and starts its displacement in the main extension direction 60.
  • the displacement of the left switching unit 1 is completed.
  • the right-hand switching means 3 is located in the ejection section 14 the control link 6 of the right switching unit 2 and is pushed back into the starting position in the direction of a vertical axis 19 which extends in the radial direction relative to the camshaft 46 (see Figure 1).
  • the right-hand switching means 3 is again in the starting position. The two switching operations in which the switching units 1, 2 are shifted to the right relative to the switching means 3, 4, so run after the actuator 64 or the actuator 65 (see Figure 1) has given the signal, with rotating camshaft 46 automated , So without further, coming from outside of the execution unit 38 signals. The same applies to the switching operations in which the switching units 1, 2 are successively moved to the left.
  • the left-hand switching means 4 is retracted by the actuator 64 (see FIG. 1) into the immersion section 10 of the control link 5 on the basis of a signal given by the actuator 64.
  • the left-hand switching means 4 is located shortly before the beginning of the actuating section 11 of the control link 5 in the left-hand switching unit 1.
  • the left-hand switching means 4 is located in FIG Operating portion 11 of the control link 5 of the left switching unit 1 and starts to shift the left switching unit 1 in the main extension direction 62, which is also an axial direction.
  • a fourth step according to FIGS. 15 a and 15 b the displacement of the left switching unit 1 to the left is completed.
  • the displacement of the right-hand switching unit 2 in the main extension direction 62 begins to the left.
  • the switching means 4 In order to shift the switching units 1, 2 to the left, the switching means 4 must therefore actuate the switching units 1, 2 independently of each other.
  • the displacement of the right-hand switching unit 2 is calmed and is then completed.
  • the left switching means 4 is located in the ejection section 13 of the control link 5 of the left switching unit 1 and is pushed back into the starting position in the direction of a vertical axis 20.
  • Step 19a and 19b the left switching means 4 is again in the starting position.
  • both switching units 1, 2 are operated simultaneously at times. The same applies to the switching process to the right.
  • the switching means 3, 4 correspond to the switching units 1, 2.
  • the two switching units 1, 2 can be actuated by the switching means 3, 4 in a defined switching sequence.
  • the switching operations to the left and to the right can therefore be repeated as often as desired in alternating order.
  • the switching units 1, 2 are brought by the control scenes 5, 6 to the immersion, actuation, change over and calm again and again in different switching states.
  • the switching units 1, 2 are shifted individually and successively in the same direction to the left or to the right.
  • the switching units 1, 2 are thus partially decoupled in their movement in the main extension direction of the camshaft 46 (see FIG. 1).
  • each switching means 3, 4 each assigned a switching direction.
  • valve lift curves of valves which are opened and closed due to the rotation of the camshaft 46 in an operating mode, are changed. Furthermore, valves can be switched off by the switching and thus remain closed. With a change of the valve lift curves may be accompanied by a change of the operating modes of the internal combustion engine.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

L'invention est basée sur un dispositif d'inversion de l'entraînement de soupape d'un moteur à combustion interne, qui présente une unité d'inversion (36). L'invention propose que l'unité d'inversion (36) présente au moins une unité d'exécution (38) qui présente au moins deux unités d'inversion (1, 2) et au moins un moyen d'inversion (3, 4) prévu pour actionner au moins dans un mode de fonctionnement les deux unités ou plus d'inversion (1, 2) avec un décalage temporel au moins partiel.
EP08801531.8A 2007-08-10 2008-08-07 Dispositif d'inversion de l'entraînement de soupape d'un moteur à combustion interne Active EP2176524B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007037746.2A DE102007037746B4 (de) 2007-08-10 2007-08-10 Brennkraftmaschinenventiltriebumschaltvorrichtung
PCT/EP2008/006489 WO2009021668A1 (fr) 2007-08-10 2008-08-07 Dispositif d'inversion de l'entraînement de soupape d'un moteur à combustion interne

Publications (2)

Publication Number Publication Date
EP2176524A1 true EP2176524A1 (fr) 2010-04-21
EP2176524B1 EP2176524B1 (fr) 2019-12-04

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP08801531.8A Active EP2176524B1 (fr) 2007-08-10 2008-08-07 Dispositif d'inversion de l'entraînement de soupape d'un moteur à combustion interne

Country Status (6)

Country Link
US (1) US8347838B2 (fr)
EP (1) EP2176524B1 (fr)
JP (1) JP5204844B2 (fr)
CN (1) CN101779009B (fr)
DE (1) DE102007037746B4 (fr)
WO (1) WO2009021668A1 (fr)

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DE102007037745A1 (de) 2007-08-10 2009-02-12 Daimler Ag Brennkraftmaschinenventiltriebumschaltvorrichtung
DE102007037747B4 (de) 2007-08-10 2022-06-15 Mercedes-Benz Group AG Brennkraftmaschinenventiltriebumschaltvorrichtung
DE102008029325A1 (de) * 2008-06-20 2009-12-24 Daimler Ag Ventiltriebvorrichtung
DE102008029349A1 (de) * 2008-06-20 2009-12-24 Daimler Ag Ventiltriebvorrichtung
DE102011011457A1 (de) 2011-02-17 2012-08-23 Daimler Ag Brennkraftmaschinenventiltriebvorrichtung
DE102011056833B4 (de) * 2011-12-21 2023-03-23 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Ventiltriebvorrichtung für eine Brennkraftmaschine
DE102012004420A1 (de) * 2012-03-08 2013-09-12 Daimler Ag Kraftfahrzeugventiltriebverstellvorrichtung
DE102015014175A1 (de) * 2015-11-03 2017-05-04 Daimler Ag Ventiltriebvorrichtung
DE102016005454A1 (de) * 2016-05-03 2017-11-09 Daimler Ag Ventiltriebvorrichtung, insbesondere für eine Brennkraftmaschine
US20180094554A1 (en) * 2016-10-05 2018-04-05 GM Global Technology Operations LLC Variable camshaft
DE102018000435B4 (de) 2018-01-19 2020-12-03 Daimler Ag Ventiltrieb für eine Verbrennungskraftmaschine. insbesondere eines Kraftfahrzeugs

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JP3526757B2 (ja) * 1998-08-04 2004-05-17 本田技研工業株式会社 内燃機関用動弁装置
JP3535431B2 (ja) * 1999-12-28 2004-06-07 本田技研工業株式会社 内燃機関の動弁装置
DE10212327A1 (de) * 2001-09-11 2003-03-27 Porsche Ag Ventiltrieb für eine Brennkraftmaschine
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DE102004011586A1 (de) * 2003-03-21 2004-10-07 Audi Ag Ventiltrieb einer einen Zylinderkopf aufweisenden Brennkraftmaschine
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DE102007037745A1 (de) * 2007-08-10 2009-02-12 Daimler Ag Brennkraftmaschinenventiltriebumschaltvorrichtung
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JP5204844B2 (ja) 2013-06-05
JP2010535966A (ja) 2010-11-25
CN101779009B (zh) 2012-10-03
DE102007037746B4 (de) 2022-06-15
WO2009021668A1 (fr) 2009-02-19
EP2176524B1 (fr) 2019-12-04
US20100180843A1 (en) 2010-07-22
DE102007037746A1 (de) 2009-02-12
US8347838B2 (en) 2013-01-08
CN101779009A (zh) 2010-07-14

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