EP3067524B1 - Element de reglage destine a un deplacement axial d'un ensemble de cames coulissant le long d'un axe d'arbre a came - Google Patents

Element de reglage destine a un deplacement axial d'un ensemble de cames coulissant le long d'un axe d'arbre a came Download PDF

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Publication number
EP3067524B1
EP3067524B1 EP15198234.5A EP15198234A EP3067524B1 EP 3067524 B1 EP3067524 B1 EP 3067524B1 EP 15198234 A EP15198234 A EP 15198234A EP 3067524 B1 EP3067524 B1 EP 3067524B1
Authority
EP
European Patent Office
Prior art keywords
camshaft
section
positioning element
guide
actuator
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
Application number
EP15198234.5A
Other languages
German (de)
English (en)
Other versions
EP3067524A1 (fr
Inventor
Florian Schulz
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.)
Kendrion Villingen GmbH
Original Assignee
Kendrion Villingen GmbH
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 Kendrion Villingen GmbH filed Critical Kendrion Villingen GmbH
Priority to PL15198234T priority Critical patent/PL3067524T3/pl
Publication of EP3067524A1 publication Critical patent/EP3067524A1/fr
Application granted granted Critical
Publication of EP3067524B1 publication Critical patent/EP3067524B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • 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
    • 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
    • F01L1/08—Shape of cams
    • 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
    • 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
    • F01L2013/0078—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 axially displacing the camshaft
    • 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
    • F01L2013/10—Auxiliary actuators for variable valve timing
    • F01L2013/101—Electromagnets

Definitions

  • the present invention relates to an actuating element for axially displacing a displaceably mounted camshaft or a camshaft section displaceably mounted on a shaft along the camshaft axis. Furthermore, the invention relates to a device for axially displacing a camshaft or a camshaft section, comprising an axially displaceable camshaft or an axially displaceable camshaft section, which or has one or more projections, and such an actuating element.
  • Camshafts have a number of cams that represent eccentric portions on the camshaft.
  • the cams can either be fixedly arranged on the camshaft or on camshaft sections which can be applied in a rotationally fixed but axially displaceable manner to a cylindrical shaft. With the cams adjacent axially displaceable components can be moved by turning the camshaft at regular intervals.
  • a prominent application of the camshafts is thereby the opening and closing of valves in an internal combustion engine.
  • it is possible to change the engine characteristics for example, from a comfort-oriented to a sporty characteristic, which, inter alia, by changing the valve lift caused by the Shape of the cam is determined, is implemented.
  • different engine speeds require variable valve lifts to optimize torque and fuel consumption.
  • a second section is a second cam, which is smaller in comparison to the first cam and has a different geometry, and thus the valve when turning the camshaft with a second lift curve compared to the first lift curve less far and for a shorter time with a other speed profile opens.
  • a valve which cooperates with the first section is not actuated at all during rotation of the camshaft, which is the case, for example, when the cylinder is switched off.
  • the in FIG. 1 shown camshaft portion each has two of these sections, so that two of these camshaft sections must be provided for a four-cylinder internal combustion engine.
  • the actuators Since the plungers of the actuators have to be moved back and forth coordinated with each other, the actuators are constructed relatively complicated.
  • the grooves must be milled into the camshaft, which is therefore particularly associated with a considerable manufacturing effort, since a separate groove is provided for each plunger, which also each have their own cross-section.
  • the camshaft is weakened in the area in which the grooves are arranged, which increases the likelihood of breakage in this area. This probability is increased by voltage spikes caused by the grooves.
  • the axial displacement of the camshaft or the camshaft section takes place in the following manner:
  • the actuator is moved to the first position, in which the projection cooperates with the actuating element.
  • the camshaft is rotated by a certain amount, for example, 90 °, wherein the projection moves along the guide portion so that the shape of the guide portion dictates the amount and motion profile of the axial displacement of the camshaft or camshaft portion along the camshaft axis.
  • the actuator is moved to the second position and the camshaft can be used as intended.
  • the guide section comprises one or more guide surfaces of the actuating element, which are inclined at least in sections with respect to a center plane of the actuating element.
  • the median plane should be such that it divides the actuator into two substantially equal halves.
  • the guide surfaces are the outer surfaces of the actuating element, which limit the actuating element to the outside. The guide surfaces thus enclose an angle with the median plane.
  • the guide portion comprises a first guide surface and a second guide surface, wherein the first guide surface and the second guide surface are inclined in opposite directions with respect to the center plane.
  • a first projection with the first guide surface together whereby the camshaft or the camshaft portion is axially displaced in the first direction.
  • a second projection cooperates with the second guide surface, whereby the camshaft or the camshaft portion is axially displaced in the opposite direction.
  • the two projections can be arranged axially spaced on the camshaft. Between the two adjustment steps, the adjusting element is moved to the second position.
  • the first guide groove and the second guide groove intersect.
  • the camshaft can be displaced axially by turning in the same direction with a projection both one and in the opposite direction.
  • the two guide grooves can be designed so that the projection is axially positioned after passing through the first guide groove, that it then engages in the second guide groove, without the actuator must be axially displaced or a second projection must be provided.
  • a very compact actuator can be provided, which allows the displacement of the camshaft or the camshaft portion in both directions with only one projection, without the actuator must be arranged axially displaceable. Consequently, a very cost-effective and mechanically simple camshaft displacement can be realized.
  • the first guide groove has a first cross section and the second guide groove has a second cross section which differs from the first cross section.
  • This embodiment is particularly suitable when a plurality of first guide grooves and a plurality of second guide grooves are provided.
  • the actuator can be moved a little further to the camshaft, for example, during axial advancement of the camshaft or the camshaft portion, so that the projection of the deeper groove is clearly guided even at crossing points.
  • the actuator is moved slightly less far to the camshaft, so that the projection is guided only by the less deep groove and does not intervene in the deeper groove at the intersection. Consequently, then there are several first positions in which the projection can interact only with a specific groove. Alternatively, multiple protrusions of different sizes may be used.
  • the tubular curved section sweeps over a first angle of about 70 ° to about 110 ° or a second angle of about 160 ° to about 200 ° relative to a center plane of the actuating element.
  • the tubular arched portion covers an angle of 90 ° or 180 °, it can be manufactured particularly easy to manufacture.
  • the actuator can be mounted with a arranged on the bisecting the first or second angle bearing portion. In this case, a rocker-like mounting of the actuating element is realized.
  • the tubular arched portion is then divided by the storage portion into first and second subsections. In this case, the actuator can be moved not only between the first and the second, but between the second and a third position. In the first position, the projection can engage in the first subsection and in the third position in the second subsection.
  • the actuator can be mounted so that when failure of a moving means with which the actuator is moved, it is ensured that the camshaft or the camshaft portion remain in a usable position or is reset in this. As a result, the internal combustion engine can continue to be operated and the camshaft or the camshaft section can be automatically returned to an uncritical position even if the movement device fails. This is particularly important in a cylinder deactivation, so that it is prevented that all cylinders can be switched off in case of failure of the moving device.
  • the engine will not be damaged and the vehicle will continue to function albeit limited, allowing the driver to visit the service unaided. The reliability is thereby increased.
  • the actuating element has an actuating portion which cooperates with an actuator for moving the actuating element between the first position and the second position.
  • the actuator can move the actuating element between the first and the second position solely by pressing and / or pulling the operating section by utilizing the lever ratios with a very small adjusting force.
  • a special embodiment of the actuating portion is not necessary.
  • the actuator can be constructed very simply.
  • the device according to the invention design the axial adjustment of a camshaft or of a camshaft section in a particularly simple manner, in particular, because the camshaft does not have to be provided with difficult to be produced guide grooves, which also weaken the camshaft at this point. Rather, it is sufficient to provide the camshaft or the camshaft section with a projection or to use a projection already present on the camshaft or the camshaft section, namely one of the cams, for the axial displacement of the camshaft.
  • the projection may have any shape and may, for example, also angled contours, which are comparable to a finger follower include.
  • the guide portion comprises one or more guide surfaces of the actuator, which are at least partially inclined with respect to a center plane of the actuator and the actuator is arranged with respect to the camshaft so that the center plane is substantially parallel to a plane perpendicular to a camshaft axis extending camshaft plane ,
  • the guide surfaces include a certain angle with respect to a camshaft plane extending perpendicular to the camshaft axis, so that a force acting parallel to the camshaft axis is exerted on the projection when the camshaft is rotated and the actuator is in the first position , By this axially acting force, the camshaft or the camshaft portion is moved along the camshaft axis.
  • the guide section preferably has one or more guide grooves which are inclined at least in sections relative to a center plane, wherein the actuating element is arranged with respect to the camshaft such that the midplane extends substantially parallel to a camshaft plane extending perpendicular to a camshaft axis. This also ensures that when rotating the camshaft, an axial force exerted by the guide grooves on the projection is, whereby the camshaft or the camshaft portion is axially displaced.
  • the device may comprise an actuator which cooperates with an actuating portion of the actuating element for moving the actuating element between the first position and the second position.
  • an actuator it is possible to move the actuator in the desired manner between the first and the second position.
  • the actuator can be integrated into a control and regulating circuit of an internal combustion engine so that the camshaft or the camshaft section can be displaced axially in one direction or the other due to a specific event.
  • the projection or projections are formed by cams of the camshaft or by the camshaft section.
  • the camshaft or not at all made to be able to be axially displaced with the device according to the invention, since the cams themselves can interact with the actuator so that an axial adjustment of the camshaft or camshaft section is possible.
  • An additional manufacturing effort on the camshaft or on the camshaft section is not necessary. consequently can the camshaft produce particularly favorable, without having to give up the axial displacement.
  • the projection is designed as a pin mounted in the camshaft or in the camshaft section.
  • the cams themselves form the projection
  • an additional manufacturing effort is necessary to secure the pin in the camshaft or in the camshaft section, but clearly compared to the known in the art, axially displaceable camshaft is lower, since the camshafts according to the invention need not be provided with a complicated groove.
  • the manufacturing effort for attaching the pin in the camshaft or in the camshaft section is comparatively small.
  • a bolt or a pin can be used as an alternative to the pin.
  • the pin can be formed by the main body of the camshaft or the camshaft section, so that it does not represent a separate component.
  • the abrasion can interfere with the operation of the Camshaft and the device according to the invention affect. If, however, the pin is rotatably mounted, the pin is rubbed off evenly, so that no flattening arise. Furthermore, the abrasion can be reduced by the fact that the pin does not slide along the guide portion, but rolls on the guide portion. The rolling can be promoted by roughening the contact areas between the pin and the guide portion.
  • first cam 20 actuates an unillustrated valve of an internal combustion engine, also not shown, with a first lift curve
  • second cam 22 actuates the valve with a second lift curve, whereby the valve is opened less widely and for a shorter time than with the first lift curve.
  • the internal combustion engine can be operated with different characteristics, for example in a comfort-oriented or a sporty mode.
  • the camshaft portion 10 In order to operate the engine in the various modes or to completely shut off a cylinder, the camshaft portion 10 must be along the camshaft axis A N are axially displaced, so that the valve with one of the three sections 18 1 to 18 3 on the lateral surface 14 of the camshaft portion 10 can cooperate.
  • FIG. 2 a first embodiment of an actuating element according to the invention 24 1 is shown with reference to a perspective view.
  • the adjusting element 24 1 according to the invention has a tubular curved section 26 and a storage section 28.
  • the storage section 28 is designed approximately hollow cylindrical, so that the adjusting element 24 1 can be rotatably supported about a rotational axis A D.
  • the bearing can also be designed so that the actuator 24 1 along the axis of rotation A D is displaced, but this is not required.
  • the tubular curved section 26 is subdivided into two substantially equal halves from a central plane E, which runs essentially perpendicular to the axis of rotation A D.
  • positioning element 24 1 the present invention has a number of guide portions 30 which are formed in the illustrated example of guide surfaces 32 and guide grooves 34th
  • the actuating element 24 1 has a first guide surface 32 1 and a second guide surface 32 2 , which at the same time constitute the left and right outer surfaces of the tubular curved section 26 of the actuating element 24 1 relative to the center plane E.
  • the first and the second guide surface 32 1 , 32 2 are inclined with respect to the center plane E by a certain angle, wherein the distance between the two guide surfaces 32 1 , 32 2 increases with increasing distance from the axis of rotation A D. Consequently, the tubular curved portion 26 has a trapezoidal shape in its development.
  • first guide grooves 34 1 and two second guide grooves 34 2 which are respectively parallel to each other and also inclined with respect to the center plane E. But it is just as possible, the two first guide grooves 34 1 do not run parallel to each other, which may also apply to the second guide grooves 34 2 .
  • the first guide surface 32 1 extend parallel to the first guide grooves 34 1 and the second guide surface 32 2 parallel to the second guide grooves 34 2 , where also other courses are conceivable. It is also possible to provide more than two first guide grooves 34 1 and two second guide grooves 34 2 .
  • the first guide grooves 34 1 and the second guide grooves 34 2 are oppositely inclined with respect to each other, so that some of the guide grooves 34 intersect within the tubular arched portion 26.
  • the two first guide grooves 34 1 have a first cross section Q 1 and the two second guide grooves 34 2 have a second cross section Q 2 , wherein the second cross section Q 2 is wider than the first cross section Q 1 .
  • both the first and the second guide grooves 34 1 , 34 2 have a substantially rectangular cross-section.
  • FIG. 3 a first embodiment of a device according to the invention 36 1 is shown with reference to a perspective view.
  • the device 36 1 comprises an axially displaceable along the camshaft axis A N camshaft portion 10 and the in FIG. 2 shown actuator 24 1 .
  • the camshaft portion 10 is substantially identical to that in the FIG. 1 is shown, however, has two projections 38 which are arranged in one of the disk-shaped sections 16.
  • the two projections 38 are realized as a first pin 40 and a second pin 42 which are radially projecting to a certain extent on the disc-shaped portion 16 and, for example, as hardened pins 40, 42 are formed.
  • the two pins 40, 42 are pressed into the camshaft section 10 and aligned with each other.
  • FIG. 3 is clearly visible that the tubular curved portion 26 sweeps over a lying in the center plane E angle of about 90 °. Furthermore, it can be seen that the axis of rotation A D , about which the adjusting element 24 1 is rotatably mounted, and the camshaft axis A N are parallel. In addition, a comparison of the Figures 2 and 3 in that the adjusting element 24 1 is arranged with respect to the camshaft section 10 such that the median plane E runs parallel to a plane perpendicular to the camshaft axis A N.
  • the adjusting element 24 1 can be mounted, for example, on the cylinder head or on the valve train of the internal combustion engine or on the engine cover.
  • the actuator 24 1 is moved with a plunger 44 of an actuator 45 shown only greatly simplified between a first position and a second position.
  • the actuator may comprise an electromagnet, wherein only one plunger 44 is sufficient to realize more complicated Verstellab réelle the camshaft section 10.
  • the first position should be defined so that at least one of the pins 40, 42 cooperates with the actuator 24 1
  • the second position should be defined so that none of the pins 40, 42 cooperates with the actuator 24 1 .
  • the first position may change during the displacement of the camshaft section 10.
  • the plunger acts 44 with an actuating portion 46 together, which has a recess 48 in the present example, in which the plunger 44 engages.
  • one of the pins 40, 42 slides along one of the guide surfaces 32 or one of the guide grooves 34, thereby selecting a force acting along the camshaft axis A N on the respective pin 40, 42 due to its inclination with respect to the center plane E not shown is applied, so that the camshaft portion 10 is axially displaced along the camshaft axis A N. If the camshaft portion 10 has been moved to the desired axial position, the actuator 24 1 is moved back to the second position.
  • the adjusting element 24 1 is moved up again to the camshaft section 10, wherein the inclination of the guide grooves 34 is selected so that the pin 42 engages after passing through a guide groove 34 in the next guide groove 34.
  • the pin 42 then engages the left of the first guide grooves 34 1 , so that the camshaft portion 10 is further axially displaced in the same direction that the portion 18 3 cooperates with the valve.
  • camshaft section 10 If the camshaft section 10 is to be pushed back axially, then either the first pin 40 is used by a corresponding rotation of the camshaft section 10, which protrudes a little further beyond the lateral surface 14 in comparison to the second pin 42, or the actuating element 24 1 becomes slightly further on Camshaft section 10 moved up and brought back the second pin 42 into engagement. This ensures that the pins 40, 42 are guided only by the lower second guide grooves 34 2 . A further axial displacement of the camshaft section 10 can also take place via the guide surfaces 32 1 and 32 2 .
  • the actuator 24 1 can be pulled by the plunger 44 in the second position or a spring mechanism can be provided, which biases the actuator 24 in the first or second position, so that the plunger 44 has to apply only one-directional force, causing the Actuator 45 can be very simple.
  • the actuator may also include a bistable solenoid.
  • the two camshaft sections 10 1 , 10 2 are moved axially with the same actuator 24 2 .
  • the axial displacement of the camshaft sections 10 1 , 10 2 along the camshaft axis A N is done in the manner described above.
  • FIG. 5 a third embodiment of the actuator 24 according to the invention 24 3 is shown with reference to a perspective view.
  • FIG. 6 shows a third embodiment of the inventive device 36 3 with the in FIG. 5 shown actuator 24 3 , which cooperates with a camshaft portion 10.
  • the camshaft section 10 has two pins 40, 42 which are in FIG. 6 are not recognizable and contrary to the in FIG. 3 embodiment shown are not aligned.
  • the actuator 24 3 is in the second position when the first subsection 50 and the second subsection 52 have the same distance to the camshaft section 10, so that the actuator 24 3 with none of the two pins 40, 42 cooperates.
  • the actuator 45 pulls the plunger 44 towards itself, the actuator 243 is rotated in a first direction about the axis of rotation A D and the first subsection 50 of the tubular arched portion 26 cooperates with the in FIG. 6 rear pin 40 together.
  • a magnet may be formed pressing, which rotates the pin in a cam. The pin then rotates in the direction of track 26 and 50 and should not be engaged. The magnet is pressed. The half shell with Adjustment track is not engaged. If the adjustment pin passes through the axis of rotation 28, it can be inserted into the corresponding track on the second quarter shell and displaces the cam, for example, to the left. If the actuator is not actuated when meshing on the first half-shell in tracks 26 and 50, it is for example pushed to the right. Analogously, this happens with pulling variants.

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

Claims (18)

  1. Elément de réglage du coulissement axial d'un arbre à cames monté coulissant selon l'axe (AN) de l'arbre à cames ou d'un segment d'arbre à cames (10) monté coulissant sur un arbre (15) le long de l'axe d'arbre à cames (AN), dans lequel,
    - l'élément de réglage (24) est mobile entre une première position et une second position,
    - l'élément de réglage (24) a un segment de guidage (30) par lequel une ou plusieurs saillies d'un arbre à cames monté coulissant axialement ou d'un segment d'arbre à cames (10) monté coulissant axialement, coopèrent dans une première position, pour que l'arbre à cames ou le segment d'arbre à cames (10) soit coulissant axialement par rotation autour de l'axe d'arbre à cames (AN), et
    - dans la seconde position, la saillie (38) ne coopère pas avec le segment guidage (30),
    - le segment de guidage (30) comporte une ou plusieurs surfaces de guidage (32) l'élément de réglage (24) et qui sont inclinées, au moins par segment, par rapport au plan médian (E) de l'élément réglage (24),
    - le segment de guidage (30) a une première surface de guidage (321) et une seconde surface de guidage (322),
    - la première surface de guidage (321) et la seconde surface de guidage (322) étant inclinées de façon opposée par rapport au plan médian (E) et les surfaces extérieures de l'élément de réglage (24) qui délimitent l'élément de réglage vers l'extérieur.
    caractérisé en ce que
    le segment de guidage (30) a une ou plusieurs rainures de guidage (34) qui sont inclinées au moins par segment par rapport au plan médian (E), et
    le segment de guidage (30) a une première rainure de guidage (341) et une seconde rainure de guidage (342),
    la première rainure de guidage (341) et la seconde rainure de guidage (342)
    étant inclinées en sens opposé par rapport au plan médian (E) .
  2. Elément de réglage selon la revendication 1,
    caractérisé en ce que
    la première rainure de guidage (341) et la seconde rainure de guidage (342) se croisent.
  3. Elément de réglage selon la revendication 2,
    caractérisé en ce que
    la première rainure de guidage (341) a une première section (Q1) et le seconde rainure de guidage (342) a une seconde section (Q2) qui diffère de la première section (Q1) .
  4. Elément de réglage selon l'une des revendications 1 à 3,
    caractérisé en ce que
    les rainures de guidage (34) ont une première extrémité (X1) et une seconde extrémité (X2),
    les rainures de guidage (34) ayant, dans la région de la première extrémité (X1), une profondeur initiale (T) et qui s'annule dans la région de la seconde extrémité (X2).
  5. Elément de réglage selon l'une des revendications précédentes,
    caractérisé en ce que
    l'élément de réglage (24) a un segment de palier (28) qui reçoit l'élément de réglage (24) pivotant entre la première position et le seconde position.
  6. Elément de réglage selon l'une des revendications précédentes,
    caractérisé en ce que
    l'élément de réglage (24) a un segment bombé (26) de forme tubulaire dans lequel se trouve le segment de guidage (30).
  7. Elément de réglage selon la revendication 6, caractérisé en ce que le segment bombé (26) de forme tubulaire développe par rapport au plan médian (E) de l'élément de réglage (24) un premier angle compris entre 70° et 110° et un second angle compris entre 160° et 200°.
  8. Elément de réglage selon l'une des revendications précédentes,
    caractérisé en ce que
    l'élément de réglage (24) a un segment d'actionnement (46) qui coopère avec un actionneur (45) pour déplacer l'élément de réglage (24) entre sa première position et sa seconde position.
  9. Elément de réglage selon la revendication 8,
    caractérisé en ce que
    le segment d'actionnement (46) a une profondeur (48) ou un perçage traversant recevant un poussoir (44) de l'actionneur (45) .
  10. Dispositif de coulissement axial d'un arbre à cames ou d'un segment d'arbre à cames (10), comprenant :
    - un arbre à cames coulissant axialement ou un segment d'arbre à cames (10) coulissant axialement et muni d'une ou plusieurs saillies (38), et
    - un élément de réglage (24) selon l'une des revendications précédentes.
  11. Dispositif selon la revendication 10,
    caractérisé en ce que
    le segment de guidage (30) a une ou plusieurs surfaces de guidage (32) de l'élément de réglage (24), et qui, par rapport au plan médian (E) l'élément de réglage (24), sont inclinées au moins par segment et l'élément de réglage (24) est disposé par rapport à l'arbre à cames ou au segment d'arbre à cames (10) pour que le plan médian (E) soit pratiquement parallèle à un plan d'arbre à cames (EN) perpendiculaire à l'axe (AN) de l'arbre à cames.
  12. Dispositif selon la revendication 10 ou 11,
    caractérisé en ce que
    le segment de guidage (30) a une ou plusieurs rainures de guidage (34), inclinées par segment par rapport au plan médian (E) et l'élément de réglage (24) est disposé par rapport à l'arbre à cames ou au segment d'arbre à cames (10) pour que le plan médian (E) soit pratiquement parallèle à un plan d'arbre à cames (EN) perpendiculaire à l'axe (AN) de l'arbre à cames.
  13. Dispositif selon l'une des revendications 10 à 12,
    caractérisé en ce que
    l'élément de réglage (24) a un segment de palier (28) par lequel l'élément de réglage (24) est monté à rotation autour d'un axe de rotation (AD) tournant entre la première position et le seconde position,
    l'axe de rotation (AD) étant pratiquement parallèle à l'axe (AN) de l'arbre à cames.
  14. Dispositif selon l'une des revendications 10 à 13,
    caractérisé en ce que
    le dispositif a un actionneur (45) coopérant avec un segment d'actionnement (46) de l'élément de réglage (24) pour limiter le mouvement de l'élément de réglage (24) entre la première position et la seconde position.
  15. Dispositif selon l'une des revendications 10 à 14,
    caractérisé en ce que
    la ou les saillies (38) sont formées par des cames (20, 22) de l'arbre à cames ou du segment d'arbre à cames (10).
  16. Dispositif selon l'une des revendications 10 à 15,
    caractérisé en ce que
    la saillie (38) est réalisée sous la forme d'une broche (40, 42) fixée dans l'arbre à cames ou dans le segment d'arbre à cames (10).
  17. Dispositif selon la revendication 16,
    caractérisé en ce que
    la broche (40, 42) est montée en rotation dans l'arbre à cames ou dans le segment l'arbre à cames (10).
  18. Procédé de coulissement axial d'un arbre à cames coulissant axialement le long de l'axe (AN) de l'arbre à cames ou d'un segment d'arbre à cames (10) monté coulissant le long de l'axe de l'arbre à cames,
    l'arbre à cames ou le segment d'arbre à cames (10) ayant une ou plusieurs saillies (38),
    procédé comprenant les étapes suivantes consistant à :
    - déplacer l'élément de réglage (24) selon l'une des revendications 1 à 9, entre une première position et une seconde position,
    - un segment de guidage (30) de l'élément de réglage coopérant dans une première position avec une ou plusieurs saillies (38) de l'arbre à cames ou du segment d'arbre à cames (10),
    - l'arbre à cames ou segment d'arbre à cames (10) étant coulissant axialement selon l'axe (AN) de l'arbre à cames et dans la seconde position, la saillie (38) ne coopère pas avec le segment guidage (30).
EP15198234.5A 2015-03-13 2015-12-07 Element de reglage destine a un deplacement axial d'un ensemble de cames coulissant le long d'un axe d'arbre a came Not-in-force EP3067524B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15198234T PL3067524T3 (pl) 2015-03-13 2015-12-07 Element nastawczy do osiowego przesuwania wału krzywkowego zamocowanego przesuwnie wzdłuż osi wału krzywkowego

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015103761.0A DE102015103761A1 (de) 2015-03-13 2015-03-13 Stellelement zum axialen Verschieben einer entlang einer Nockenwellenachse verschiebbar gelagerten Nockenwelle

Publications (2)

Publication Number Publication Date
EP3067524A1 EP3067524A1 (fr) 2016-09-14
EP3067524B1 true EP3067524B1 (fr) 2019-10-16

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Application Number Title Priority Date Filing Date
EP15198234.5A Not-in-force EP3067524B1 (fr) 2015-03-13 2015-12-07 Element de reglage destine a un deplacement axial d'un ensemble de cames coulissant le long d'un axe d'arbre a came

Country Status (5)

Country Link
US (1) US9976454B2 (fr)
EP (1) EP3067524B1 (fr)
CN (1) CN105971683B (fr)
DE (1) DE102015103761A1 (fr)
PL (1) PL3067524T3 (fr)

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DE102017205141A1 (de) * 2017-03-27 2018-09-27 Mahle International Gmbh Ventiltrieb für eine Brennkraftmaschine
DE102017205151A1 (de) * 2017-03-27 2018-09-27 Mahle International Gmbh Ventiltrieb für eine Brennkraftmaschine
DE102017205572A1 (de) * 2017-03-31 2018-10-04 Mahle International Gmbh Ventiltrieb für eine Brennkraftmaschine
DE102017214793A1 (de) * 2017-08-24 2019-02-28 Bayerische Motoren Werke Aktiengesellschaft Ventiltrieb für eine Brennkraftmaschine
DE102018000435B4 (de) * 2018-01-19 2020-12-03 Daimler Ag Ventiltrieb für eine Verbrennungskraftmaschine. insbesondere eines Kraftfahrzeugs
AT521446B1 (de) * 2018-06-21 2021-12-15 Avl List Gmbh Ventiltriebvorrichtung für eine brennkraftmaschine
CN111457295B (zh) * 2020-04-28 2022-03-25 大庆恒驰电气有限公司 一种可调节的led照明灯

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DE10054623A1 (de) * 2000-11-03 2002-05-08 Audi Ag Vorrichtung zum Umschalten zumindest eines Nockenpaketes
DE102004033798B4 (de) * 2004-07-12 2015-12-17 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Ventiltrieb zur Betätigung von Gaswechselventilen von Brennkraftmaschinen
DE102004055852A1 (de) * 2004-09-30 2006-04-13 Bayerische Motoren Werke Ag Ventiltrieb für eine Brennkraftmaschine, insbesondere zur selektiven Zylinderzuschaltung
DE102007010151A1 (de) * 2007-03-02 2008-04-24 Audi Ag Ventiltrieb einer Brennkraftmaschine mit dreistufigen Nockenprofilgruppen und verschiebbaren Nockenträgern mit ausziehbaren Eingriffselementen
DE102007010152A1 (de) * 2007-03-02 2008-04-24 Audi Ag Ventiltrieb einer Brennkraftmaschine mit dreistufigen Nockenprofilgruppen und radial beweglichen Kulissenelementen
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Also Published As

Publication number Publication date
PL3067524T3 (pl) 2020-03-31
US20160265397A1 (en) 2016-09-15
DE102015103761A1 (de) 2016-09-29
EP3067524A1 (fr) 2016-09-14
CN105971683A (zh) 2016-09-28
CN105971683B (zh) 2018-11-20
US9976454B2 (en) 2018-05-22

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