EP3947927A1 - Schiebenockensystem und motor - Google Patents
Schiebenockensystem und motorInfo
- Publication number
- EP3947927A1 EP3947927A1 EP20715302.4A EP20715302A EP3947927A1 EP 3947927 A1 EP3947927 A1 EP 3947927A1 EP 20715302 A EP20715302 A EP 20715302A EP 3947927 A1 EP3947927 A1 EP 3947927A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sliding cam
- cam
- dad
- sliding
- elements
- 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
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
- 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
- F01L1/047—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
- 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
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
-
- 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
- F01L2001/0471—Assembled camshafts
- F01L2001/0473—Composite camshafts, e.g. with cams or cam sleeve being able to move relative to the inner camshaft or a cam adjusting rod
-
- 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
- F01L13/0005—Deactivating valves
- F01L2013/001—Deactivating cylinders
-
- 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
- F01L2820/00—Details on specific features characterising valve gear arrangements
- F01L2820/03—Auxiliary actuators
-
- 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
- the invention relates to a sliding cam system according to the preamble of
- Claim 1 Furthermore, the invention relates to a motor with such
- a sliding cam system of the type mentioned above is known for example from DE 10 2011 054 218 A1.
- a rotatably mounted camshaft is provided.
- the camshaft includes several sliding cams.
- Sliding cams can move axially.
- the axial movement of the sliding cams is initiated by an actuator.
- a coupling rod is fixed to a gearshift fork
- the coupling rod includes scenes.
- the backdrops are solid with the
- Coupling rod connected. The scenes are each one more
- the further sliding cams have pins which interact with the respectively assigned slides in such a way that the further sliding cams are shifted in accordance with the movement of the sliding cam firmly connected to the coupling rod.
- the invention is therefore based on the object of specifying a sliding cam system of the type mentioned at the outset, by means of which installation space can be saved and that can be achieved with low production and cost outlay.
- the invention is also based on the object of specifying a motor with such a sliding cam system.
- this object is achieved with a view to
- the task is made concrete by a sliding cam system for one
- Internal combustion engine with at least one camshaft comprising a
- Support shaft released with at least two sliding cam elements.
- Sliding cam elements each comprise a shift gate with at least one switching groove, the sliding cam elements being axially displaceable to the carrier shaft by at least one actuator pin.
- At least one adjusting element is arranged on the carrier shaft, the
- Adjusting element is axially displaceable in the direction of the longitudinal axis of the carrier shaft.
- the adjusting element is axially displaceable along the longitudinal axis of the carrier shaft.
- the adjustment element has at least two coupling pins, a first coupling pin in the area of the first
- Sliding cam element is arranged and a second coupling pin is arranged in the region of the second sliding cam element.
- the coupling pins each cooperate with a shift gate of the associated sliding cam element in such a way that the adjusting element causes a movement of the first sliding cam element initiated by the actuator pin to the second
- Sliding cam element is transferable.
- the sliding cam system according to the invention allows the transmission of an axial movement of a conventionally switched sliding cam element to at least one further sliding cam element.
- Actuator in particular by an actuator pin, is initiated.
- the actuator pin engages in a first shift groove in the shift gate of the first
- the actuator pin is not movable in the axial direction of the support shaft.
- the actuator pin is guided in sections in the switching groove and delimited by at least one flank of the switching groove.
- the sliding cam element can be displaced in an axial direction through the course of the switching groove.
- the actuator pin is only arranged in the switching groove during the shifting process.
- the first coupling pin engages in a second switching groove.
- the first coupling pin is permanently arranged in the second switching groove.
- the first coupling pin interacts with the second switching groove in such a way that the axial movement of the
- Sliding cam element is transferred to the adjusting element.
- the movement is transmitted offset in time due to the angular offset of the actuator pin to the adjusting element.
- the first sliding cam element comprises an annular groove in which the first coupling pin engages permanently and thus enables the adjustment element to be displaced at the same time.
- the second coupling pin is on the adjusting element in the axial direction
- Carrier wave arranged offset from the first coupling pin.
- Coupling pin interacts with a second sliding cam element.
- the second coupling pin engages in a switching groove in the switching gate of the second sliding cam element.
- the second coupling pin is arranged on a flank of the switching groove of the second sliding cam element.
- Adjusting element comprises several coupling pins, which with further
- the advantage of the sliding cam system according to the invention is that the adjusting element has a simple and space-saving structure. Since the coupling pins of the adjusting element in the scenes of the sliding cam elements intervene, the adjusting element can be arranged closer to the support shaft, whereby less space is required by the camshaft.
- the adjusting element is arranged parallel to a longitudinal axis of the carrier shaft. Movement in the axial direction of the carrier shaft is thereby easy
- the adjusting element is arranged on a rail for this purpose.
- the adjusting element comprises at least one receiving element and the carrier shaft at least one
- Locking element which interact with one another during operation in such a way that the adjusting element is locked between two changes in position.
- Sliding cam element does not carry out any undesired movements, for example triggered by shocks or vibrations.
- the locking element forms an abutment for the receiving element, so that the locking element is at least partially acted upon by the forces acting during the change in position of the at least second sliding cam element.
- a circular disk is on the carrier shaft and on the
- the circular disk is arranged between the extensions during operation.
- the extensions limit the circular disk in the axial direction.
- the circular disk forms an abutment for the extensions of the
- Adjustment element In other words, the adjusting element is supported by an extension against the circular disk.
- the circular disk absorbs the switching forces of the second sliding cam element.
- the circular disk includes a
- the adjusting element advantageously comprises a spring-ball locking mechanism.
- the adjusting element is also secured axially. An axial movement of the adjusting element in the area of the recess of the circular disk is only possible possible if the axial movement is initiated by the first sliding cam element.
- the at least one actuator pin and the at least two coupling pins are offset in a circumferential direction of the carrier shaft, in particular offset by 90 ° in a circumferential direction of the carrier shaft. More precisely, the actuator pin and the coupling pin are offset from one another in the circumferential direction. This is an offset switching of the
- the shift gate of the first sliding cam element particularly preferably comprises a first shift groove and at least one second shift groove, the first shift groove being provided for receiving the at least one actuator pin and the second switching groove being provided for receiving the first coupling pin.
- the first switching groove and the second switching groove also particularly preferably have the same angle of rotation, the radius of the first switching groove being greater than the radius of the second switching groove. This is an offset switching of the
- Sliding cam element have at least in sections a V-shaped profile. By changing the groove width in the axial direction of the carrier shaft, a stepless displacement of the sliding cam element can be implemented.
- Other shapes, for example S-shaped, are conceivable.
- Sliding cam element at least in sections a Y-shaped profile. This makes it possible for the first sliding cam element to have a second
- the second switching groove for the first coupling pin is particularly preferably arranged at least in sections in the center of the Y-shaped first switching groove. This enables the second sliding cam element to be shifted directly.
- the second switching groove is also advantageously designed as a circumferentially extending groove with a constant radius, in which the first coupling pin is permanently arranged such that an axial displacement of the first sliding cam element can be transmitted directly to the adjusting element. More precisely, it is thus possible that a time-shifted or phase-shifted axial movement of the at least second sliding cam element is dependent only on the shift gate of the at least second sliding cam element.
- the first switching groove of the first sliding cam element has areas with different radii, each of which is an area of the first sliding cam element, in particular one
- the shift gate of the second sliding cam element has a V-shaped profile at least in sections.
- the V-shaped profile is easy to implement, for example by milling.
- the carrier shaft advantageously comprises at least a third, in particular at least a fourth, sliding cam element. This is how it is
- Sliding cam system can be used in larger internal combustion engines. It is conceivable that the sliding cam system comprises several camshafts.
- the sliding cam elements are designed as double sliding cam elements, each of the
- Double slide cam is designed to control valves of two cylinders.
- Valve cams in particular cam sections with one or more cam contours, from a single cylinder and also valve cams, in particular cam sections with one or more cam contours, can be mounted on the respective sliding cam elements several cam contours, be arranged by several adjacent cylinders.
- the valve cams of the respective sliding cam element can be mounted on the respective sliding cam elements several cam contours, be arranged by several adjacent cylinders.
- double slide cam elements can be used that include valve cams of two adjacent cylinders.
- the double sliding cam elements can be designed to actuate valves of two adjacent, in particular separate, cylinders.
- the camshaft can have exactly two double sliding cam elements, each double sliding cam element controlling at least one valve of two adjacent cylinders during operation.
- Such camshafts can be used in four-cylinder variants of internal combustion engines.
- the slide cam elements can be configured to control at least one valve from a single cylinder.
- the camshaft can have exactly three sliding cam elements. Such camshafts can be used in three-cylinder variants of internal combustion engines.
- valve cams for associated intake valves and / or associated exhaust valves can be arranged.
- Double sliding cam elements can be used for internal combustion engines with only one camshaft.
- This camshaft can be used in internal combustion engines, for example, as a single overhead camshaft (SOHC) arranged at the top.
- SOHC overhead camshaft
- the switching grooves of the first and second sliding cam elements are arranged offset from one another at an angle of rotation such that the second sliding cam element can be displaced with a time offset to the first sliding cam element along a longitudinal direction of the support shaft.
- the time-shifted displacement of the sliding cam element enables a time-shifted activation and / or deactivation of the valves of a cylinder of an internal combustion engine.
- the second and the third sliding cam element each have a V-shaped profile, at least in sections, the V-shaped profiles each having a constant radius.
- V-shaped profiles with a constant radius are advantageous because no entry or ejection path in the second and third sliding cam elements are necessary.
- the switching grooves of the first, second and third sliding cam elements are offset from one another at an angle of rotation such that the second and third sliding cam elements can each be displaced with a time offset relative to the first sliding cam element along a longitudinal direction of the carrier shaft.
- valves of a cylinder in particular a plurality of cylinders, to be activated and / or deactivated at different times.
- the sliding cam elements each have at least one cam section for controlling a valve of a cylinder, with at least one lifting cam contour for actuating the valve being formed in the cam section.
- the sliding cam elements preferably each have at least two cam sections for controlling valves of only one cylinder, with at least one lifting cam contour for actuating the respective valve being formed in the cam sections.
- the sliding cam elements can only switch valves of one cylinder.
- the cam sections of the sliding cam elements are thus assigned to only one cylinder.
- Cam section have several cam contours, preferably with different strokes, so that actuation of the associated valve in several switching stages, i. is possible with different strokes.
- the sliding cam elements in particular double sliding cam elements, each have at least two
- Cam sections for controlling valves of two adjacent cylinders At least one lifting cam contour for actuating the valve of one of the two adjacent cylinders is formed in each of the two cam sections.
- the sliding cam elements preferably have, in particular
- Double slide cam elements each having at least four cam sections for controlling valves of two adjacent cylinders, wherein in the
- Cam sections at least one lifting cam contour is formed for actuating the respective valve. In other words, they can
- Sliding cam elements in particular double sliding cam elements, are each assigned to two cylinders.
- Cam section allows that can have several cam contours, preferably with different strokes. This enables actuation of the respective associated valves in several switching stages, i.e. is possible with different strokes.
- the respective cam section is used to control an associated valve of a cylinder.
- the associated valve can be actuated by the cam portion, i. a stroke can be transferred to this, or the associated valve is not actuated and the cylinder is therefore switched off.
- the respective cam section preferably has at least two
- Lifting cam contours in particular at least three lifting cam contours, for actuating the valve, the lifting cam contours each comprising different strokes.
- the associated valve can be operated in two switching stages.
- the respective cam section can have at least three lift cam contours with different lifts. This means that the associated valve can be operated in a total of three switching stages.
- the sliding cam element is axially displaced, the associated valve can thus be acted upon with three different strokes.
- Internal combustion engine For example, this allows you to switch between different operating modes of the internal combustion engine, for example full load operation, partial load operation.
- the cam section additionally has at least one zero lift cam contour for switching off the cylinder assigned to the valve, the zero lift cam contour adjoining a lift cam contour.
- the cam section can have a lifting cam contour and an adjacent one
- the sliding cam element can be switched between the lifting cam contour or the zero lift cam contour. This corresponds to a two-stage control of the valve.
- the cam portion can be two
- the sliding cam element can be switched between the two lift cam contours or between one of the two lift contours and the zero lift cam contour. This corresponds to a three-stage control of the valve. Further combinations of several lift cam contours and at least one zero lift cam contour are possible.
- the lifting cam contour corresponds to a contour which causes the associated valve to lift during operation.
- the lifting cam contour is part of a lifting cam.
- the zero-lift cam contour does not cause the associated valve to lift.
- the zero-lift cam contour is part of a zero-lift cam.
- the zero-lift cam contour is preferably circular, in particular cylindrical.
- the zero-lift cam contour is used advantageously for cylinder deactivation.
- At least one multiple actuator with at least two actuator pins, in particular at least three actuator pins is provided, by means of which the sliding cam elements can be brought into at least two, in particular three, axial positions in order to achieve different switching positions, in particular for two-stage, three-stage or multi-stage control to allow for the valves. Due to the two actuator pins of the multiple actuator, the sliding cam elements coupled to one another by the adjusting element can be shifted between a total of two axial positions. At this
- Execution has the at least one cam section of the respective
- Sliding cam element preferably has a lifting cam contour and a
- the sliding cam elements coupled to one another by the adjusting element can be shifted between a total of three axial positions.
- the at least one cam section of the respective sliding cam element preferably has two lifting cam contours with different strokes and one
- first sliding cam element and the multiple actuator are arranged in a first axial region of the carrier shaft and the second and / or third sliding cam element is / are arranged in a second axial region of the carrier shaft adjoining the first axial region.
- first sliding cam element and the multiple actuator are arranged in the longitudinal direction of the carrier shaft between the second and the third sliding cam element, in particular centrally, and the second and / or third sliding cam element is / are arranged in a second axial region of the carrier shaft adjoining the first axial region . Due to the different arrangement of the sliding cam elements and the
- the sliding cam system is variably adaptable to the existing installation space situation and the tolerance position.
- the locking element has, at least in sections, a circular disk or an annular disk, the locking element between the first and the second
- Sliding cam element is arranged.
- the locking element can be arranged between an axial end of the support shaft and one of the sliding cam elements.
- the axis end is the longitudinal end of the carrier shaft.
- the camshaft is designed with two double sliding cam elements
- the locking element can be arranged between the two double cam elements or between an axle end or longitudinal end of the support shaft and one the double cam elements be arranged.
- a design of the camshaft with more than two double sliding cam elements is possible.
- Carrier wave is suitable.
- the locking element is formed integrally with the carrier shaft.
- the locking element is preferably formed by at least one recess in the carrier shaft.
- the recess can be formed by at least two circumferential grooves and at least one longitudinal passage connecting the grooves.
- the grooves can be designed to run radially around the carrier shaft.
- the receiving element is arranged in one of the two grooves, at least partially depending on the axial position of the sliding cam elements. If the axial position of the sliding cam elements and thus of the adjusting element is changed during a shifting operation, the receiving element passes through the longitudinal passage and changes from the first to the second circumferential groove. That supports itself
- This configuration of the recess is used in a two-stage control of the valves, in particular by means of two contours of the respective cam sections.
- the recess can be formed by a total of three circumferential grooves and two longitudinal passages.
- a longitudinal passage connects two grooves so that a total of three axial positions are possible when the sliding cam elements are moved axially.
- the power transmission from the receiving element to the carrier shaft can take place as described above.
- the receiving element is suitable for the
- Locking element in particular the circular disk or the annular disk
- the integral embodiment of the locking element has the advantage that a locking element as a separate component can be omitted.
- the locking element is replaced by the recess in the carrier shaft.
- the structure of the sliding cam system is simplified and costs are saved.
- At least one camshaft bearing in particular roller bearing and / or slide bearing, is provided.
- a part of the camshaft bearing forms the locking element.
- the carrier shaft has at least two locking elements. Furthermore, the receiving element forms the
- Adjusting element preferably at least one extension which cooperates with one or both locking elements during operation, so that at least one of the two locking elements at least partially with the one
- the locking element can be arranged on one of the two locking elements or between the two locking elements, depending on the axial position of the sliding cam elements.
- the locking elements limit the extension in the axial direction
- the locking elements each form an abutment for the extension of the adjusting element.
- the adjustment element is supported with an extension against one of the two locking elements.
- the locking element takes the
- the locking element comprises a recess which is formed on an angle of rotation of the locking element in such a way that the locking element does not collide with the extension in the event of an axial change in position of the adjusting element.
- the carrier shaft has at least one locking element.
- the receiving element of the adjusting element preferably forms at least two extensions which interact with the locking element during operation, so that the locking element can at least partially be acted upon by the forces acting when the second and / or third sliding cam element changes position.
- the locking element can be arranged on one of the two extensions or between the two extensions, depending on the axial position of the sliding cam elements. The extensions limit the locking element in the axial direction.
- the locking element forms an abutment for the extensions of the adjusting element.
- the adjusting element is supported against the locking element with one of the two extensions or two extensions.
- the locking element thus absorbs the switching forces of the second or third sliding cam element.
- the locking element comprises a recess which is formed on an angle of rotation of the locking element in such a way that the locking element does not collide with any extension when the adjusting element changes axially.
- Cylinder head in particular in a cylinder cover, a stop is formed and the adjusting element has a stop element which cooperates with the stop in the cylinder head in such a way that the axial displacement of the
- Adjusting element is limited.
- the receiving element is
- Stop element the receiving element together with the stop of the cylinder head limiting the axial displacement of the adjusting element during operation.
- the stop and receiving element form a single element. This reduces the number of components and the effort involved in
- the adjusting element has at least one stop end in the displacement direction, which during operation interacts with a counterpart, in particular the cylinder head, in such a way that the axial displacement of the adjusting element is limited.
- the stop end can be formed by a longitudinal end of the adjusting element.
- the adjusting element preferably has two longitudinal ends and thus two stop ends which limit a displacement path along the longitudinal axis of the carrier shaft. To can the longitudinal ends with stop areas of the cylinder head cover
- This also has the advantage that the starting point and the end point of the axial displacement of the adjusting element are fixed. Furthermore, components are reduced as a result, since the longitudinal ends of the adjusting element limit the axial displacement path instead of a separate stop element.
- the locking element is arranged non-rotatably on the support shaft and is displaceable along a longitudinal direction of the support shaft, the locking element in the cylinder head, in particular in the
- Cylinder head cover is axially guided.
- the bearing can be designed in one piece or in two parts with the cylinder head.
- a one-piece design with the cylinder head enables inexpensive and easy production. Furthermore, installation space and weight can be saved in this way.
- the two-part design enables the use of various high-strength materials. This enables the absorption of greater forces and a reduction in wear. Furthermore, the bearing can be replaced if necessary. Furthermore, the influence of different thermal expansions can be kept small with different materials. For example, the
- the locking element is arranged non-rotatably on the carrier shaft and is fixed in the longitudinal direction of the carrier shaft.
- the locking element which is arranged non-rotatably on the support shaft and fixed in the longitudinal direction, is advantageous with regard to the manufacturing tolerances, since almost all axial positions are predetermined by the camshaft. Furthermore, the thermal expansion in this way only has an influence on the groove width of the Primary cam. The play in the shift gate, the cam widths and thus the displacement can be kept small, which makes the dynamic
- the spring-ball locking of the adjusting element can preferably have the function of the stop.
- the adjusting element is furthermore preferably arranged offset at an angle of rotation to the at least one actuator pin.
- the second switching groove is arranged at an axial end of the first sliding cam element next to the first switching groove, or the second switching groove is arranged between two axial ends of the first
- Sliding cam element is arranged, the second switching groove in the
- the first switching groove is the first
- Sliding cam element at least partially Y-shaped or at least partially S-shaped.
- the invention relates to a
- Camshaft comprising a support shaft with at least two
- Double sliding cam elements which are each designed to control valves of two cylinders, the double sliding cam elements each having a switching gate with at least one switching groove and at least one
- cam section with at least one wing cam contour.
- Double slide cam elements are axial to the at least one actuator pin Slidable carrier shaft. Furthermore, at least one adjusting element is arranged parallel to a longitudinal axis of the carrier shaft, which is axially displaceable in the direction of the longitudinal axis of the carrier shaft.
- the adjusting element has at least two coupling pins, a first coupling pin 17a 'being arranged in the area of the first double sliding cam element and a second coupling pin being arranged in the area of the second double sliding cam element.
- the coupling pins each interact with a shift gate of the respective associated double sliding cam element in such a way that a movement of the first double sliding cam element initiated by the actuator pin can be transmitted to the second double sliding cam element by the adjusting element.
- a motor with at least one such sliding cam system is also disclosed and claimed. It is possible for the motor to have several, in particular at least two, according to the invention
- the engine can have six cylinders in an in-line arrangement.
- the engine can have six cylinders in an in-line arrangement.
- the engine can have two of the above
- the two sliding cam systems of the six-cylinder engine can have a common support shaft on which the sliding cam elements of the two sliding cam systems are arranged so as to be axially displaceable.
- at least two actuators, in particular, are preferably used for the axial adjustment of the sliding cam elements
- actuators are used, preferably one actuator in each case
- Fig. 1 is a perspective view of an inventive
- Fig. 2 is a further perspective view of an inventive
- FIG. 3 shows a side view of an exemplary embodiment of a sliding cam system according to the invention
- Fig. 5 is a perspective view of another according to the invention.
- FIG. 6 shows a side view of an exemplary embodiment according to the invention of a sliding cam system in a cylinder head
- FIG. 7 shows a further side view of the sliding cam system according to FIG. 6;
- Fig. 8 is a side view of another according to the invention.
- FIG. 9 shows a further side view of the sliding cam system according to FIG. 8.
- FIG. 10 shows a side view of an exemplary embodiment according to the invention of a sliding cam system in a cylinder head
- FIG. 12 shows a side view of the sliding cam system according to FIG. 11;
- Fig. 13 is a perspective view of another according to the invention.
- Embodiment of a sliding cam system shows a side view of the sliding cam system according to FIG. 13;
- Fig. 15 is a perspective view of another according to the invention.
- FIG. 16 is a side view of the sliding cam system according to FIG. 15;
- FIG. 17 shows a schematic representation of a carrier wave of a further exemplary embodiment according to the invention
- FIG. 18 shows a schematic illustration of a carrier shaft with a locking element and an adjusting element of a further exemplary embodiment of a sliding cam system according to the invention.
- the sliding cam system comprises a carrier shaft 11.
- a first and a second sliding cam element 12a, 12b are arranged on the carrier shaft 11 so as to be axially movable with respect to a longitudinal axis of the carrier shaft 11. It is conceivable that more than two sliding cam elements are arranged on the carrier shaft 11.
- the carrier shaft 11 comprises three roller bearings 20. One roller bearing 20 is arranged at each of the axial ends of the carrier shaft 11 and another roller bearing 20 is arranged between the sliding cam elements 12a, 12b.
- the roller bearings 20 are locked by retaining rings 21.
- the number of roller bearings 20 and retaining rings 21 and the positions of the bearing points are variable.
- the shift gate 13 of the first sliding cam element 12a comprises a first and a second shift groove 14a, 14b.
- the switching grooves 14a, 14b are at least partially V-shaped. In other words, is the width of the two
- Switching grooves 14a, 14b not constant.
- the width is to be understood as the distance between the flanks of the switching grooves 14a, 14b in the axial direction from the carrier shaft 11.
- the flanks of the switching grooves 14a, 14b approach in the V-shaped section
- the two switching grooves 14a, 14b are arranged at the same angle of rotation.
- the first switching groove 14a has a larger radius than the second switching groove 14b.
- radius is to be understood as the amount of the distance between the groove base surface of the first or second switching groove 14a, 14b from the central longitudinal axis of the carrier shaft 11.
- the outer diameter of the shift gate 13 and the radius of the groove base area thus determine the groove depth.
- the first switching groove 14a includes a step.
- the first switching groove 14a is designed as a projection or a shoulder.
- the first switching groove 14a has a varying radius. I.e. the first switching groove 14a has sections with a larger radius and a smaller radius. The radius is changed continuously.
- the areas are each assigned to an entry area, an exit area or a displacement area.
- the second switching groove 14b has a constant radius.
- the width of the second switching groove 14b is smaller than the width of the first switching groove 14a.
- the actuator pins 15 are arranged on the carrier shaft 11.
- the actuator pins 15 are essentially only in one direction orthogonal to
- the central longitudinal axis of the carrier shaft 11 is movable.
- the actuator pins 15 are assigned to the first switching groove 14a. I.e. the actuator pins only interact with the first switching groove 14a.
- the actuator pins 15 are spaced apart from one another in the axial direction of the carrier shaft 11. As a result, depending on the position of the first sliding cam element, one of the two actuator pins 15 can be inserted into the first switching groove 14a. By introducing the actuator pins 15, an axial movement of the first sliding cam element 14a can be initiated.
- an actuator pin 15 is inserted into the first switching groove 14a.
- the inserted actuator pin 15 interacts with a flank of the first switching groove 14a. More precisely, the
- actuator pin 15 a flank of the first switching groove 14a with a force directed against the flank. This results in the axial displacement of the first sliding cam element 12a. The direction of the displacement thus depends on the edge with which the inserted actuator pin 15 interacts.
- An actuator pin 15 is assigned to each flank of the first switching groove 14a.
- An adjusting element 16 is arranged parallel to the carrier shaft 11.
- Adjusting element 16 is axially movable.
- the adjusting element is offset by 90 ° in relation to the actuator pins 15.
- the adjusting element 16 comprises a first and a second coupling pin 17a, 17b and a receiving element 18.
- the first and the second coupling pin 17a, 17b are each arranged at an axial end of the adjusting element 16.
- the receiving element 18 comprises three extensions and is arranged between the axial ends of the adjusting element 16.
- the coupling pins 17a, 17b and the receiving element 18 extend orthogonally to the central longitudinal axis of the
- the first coupling pin 17a is the second switching groove 14b of the first
- the first and second coupling pins 17a, 17b are essentially rotatably arranged on the adjustment element 16.
- the first coupling pin 17a is permanently in engagement with the second switching groove 14b of the first sliding cam element 12a.
- the first coupling pin 17a is acted upon by a flank of the second switching groove 14b with a force.
- the adjusting element 16 is displaced in the effective direction of the force. Since the adjustment element 16 and thus the coupling pins 17a, 17b are offset from one another by 90 ° in the circumferential direction and the first and second switching grooves 14a, 14b are arranged at the same angle of rotation, the adjustment element 16 is shifted accordingly in time.
- the second coupling pin 17b is arranged in the area of the second sliding cam element 12b.
- the second sliding cam element 12b comprises a switching groove 14.
- the switching groove 14 has a V-shaped section.
- the second coupling pin 17b is permanently in engagement with the switching groove 14.
- the switching groove 14 of the second sliding cam element 12b is arranged in such a way that switching of the second sliding cam element 12a is offset in time to the first sliding cam element 12a
- Sliding cam element 12b can be realized.
- the second coupling pin 17b is moved axially in the switching groove 14. More precisely, the second coupling pin 17b is moved to one of the flanks of the switching groove 14.
- the second coupling pin 17b cooperates essentially in the same way with the switching groove 14 as that Actuator pins 15 with the first switching groove 14a of the first sliding cam element 12a.
- the carrier shaft 11 comprises a locking element 19 in the form of a circular disk.
- the locking element 19 is arranged between the first and the second sliding cam element 12a, 12b.
- the locking element 19 is axially limited by the receiving element 18.
- Locking element 19 has a support function.
- the locking element 19 forms an abutment for the receiving element 18.
- the locking element 19 absorbs the forces during the switching process and thus enables the adjustment element 16 to be fixed. Furthermore, it prevents the interaction of the
- the receiving element 18 comprises two receptacles for the locking element 19.
- the locking element 19 comprises a recess. This enables the adjustment element to be moved through the circular disk.
- the recess is in the area of the
- the recess is like this in the
- Adjusting element 16 additionally comprises a spring-ball lock (not shown).
- the sliding cam system essentially corresponds to the sliding cam system according to FIGS. 1 to 4.
- the illustrated sliding cam system comprises a third sliding cam element 12c and the first sliding cam element 12a has a different shape
- the carrier shaft 11 comprises roller bearings 20 and retaining rings 21.
- the roller bearings 20 and retaining rings 21 are at the axial ends of the Support shaft 11 and arranged between the sliding cam elements 12a, 12b, 12c.
- the adjusting element 16 is arranged parallel to the carrier shaft 11.
- Adjusting element 16 is guided in a rail and by 45 ° to 60 ° in
- the adjusting element 16 comprises a third coupling pin 17c, which is arranged in the area of the third sliding cam element 12c.
- An actuator 23 with the actuator pins 15 is arranged in the area of the first sliding cam element 12a.
- the first sliding cam element 12a has a Y-shaped first switching groove 14a.
- the second switching groove 14b is designed as a groove extending over the entire circumference of the first sliding cam element 12a, in particular as an annular groove.
- the radius of the second switching groove 14b is smaller than the radius of the first switching groove 14a.
- the first and second switching grooves 14a, 14b thus have different angles of rotation.
- the first coupling pin 17a is as described above
- Embodiment permanently engaged with the second switching groove 14b.
- the continuous second switching groove 14b enables the adjusting element 16 to be shifted directly without a time offset, i.e. Adjusting element 16 and the first sliding cam element 12a move essentially simultaneously.
- the switching grooves 14 of the second and third sliding cam elements 12b, 12c are arranged on the outer circumferential surface in such a way that the sliding cam elements 12b, 12c can be switched with a time delay.
- the second and third coupling pins 17b, 17c cooperate with the switching grooves 14 in a known manner, as already described for FIGS. 1 to 4.
- a locking element 19 is arranged between the second and the third sliding cam element 12b, 12c.
- the locking element 19 comprises a circular disk with a recess.
- An extension is arranged on the adjusting element 16 in the area of the circular disk.
- the circular disk forms an abutment for the extension.
- the circular disk interacts with the extension during a shifting process in such a way that the first coupling pin is relieved during the shifting process. In other words, the extension is supported against the circular disk.
- the recess is arranged on the angle of rotation at which the displacement of the first adjusting element 16 takes place.
- a further embodiment of a sliding cam system is shown.
- the sliding cam system is arranged in a cylinder head 25.
- the sliding cam system comprises three sliding cam elements 12a, 12b, 12c.
- the cam contours 22 enclose the switching groove 14.
- the cam contours 22 of the sliding cam elements 12a, 12b, 12c are arranged exclusively on one side in the axial direction next to the switching groove 14. The switching groove 14 will be discussed in greater detail later.
- the sliding cam elements 12a, 12b, 12c each have two
- a first cam section 29a adjoins the shift gate 13 of the sliding cam element 12a, 12b, 12c.
- a second cam section 29b is arranged at a distance from the first cam section 29a in the axial direction.
- the cam sections 29a, 29b of the respective sliding cam element 12a, 12b, 12c are designed identically. Alternatively, it is possible for the cam sections 29a, 29b of the respective sliding cam element 12a, 12b, 12c to differ from one another.
- Flubnockenkontur 31 a defined lift and a zero lift cam contour 32. This also applies to the cam contours 22 according to FIGS. 1 to 4.
- the two cam contours 31, 32 are adjacent to each other in the axial direction
- Zero lift cam contour 32 i.e. instead of the zero lift cam contour 32 have a further lift cam contour 31.
- the three lifting cam contours 31 can have different strokes.
- cam sections 29 By forming the cam sections 29 with two different cam sections 29 with two different cam sections 29
- the valve of a cylinder assigned to the respective cam section 29 can have cam contours 22 in two different switching positions during operation being controlled. Specifically, during operation, a defined stroke can be transmitted to the valve by the lifting cam contour 31 and the valve can thus be actuated. In addition, the cylinder assigned to the valve can be switched off during operation by means of the zero lift cam contour 32.
- the first sliding cam element 12a comprises the first switching groove 14a and the second switching groove 14b.
- the first shift groove 14a has a Y-shaped shift gate 13.
- the second switching groove 14b extends along a circumferential direction of the first slide cam member 12a.
- the switching grooves 14 of the second and third sliding cam elements 12b, 12c are V-shaped.
- the locking element 19 is arranged between the second and the third sliding cam element 12b, 12c.
- the locking element 19 has a circular disk or an annular disk.
- the locking element 19 is rotationally fixed on the
- Carrier shaft 11 arranged.
- the circular disk or the annular disk has a recess.
- the recess extends along a circumferential direction of the circular disk or the annular disk.
- the cylinder head 25 comprises an axial bearing in which the circular disk or the annular disk of the locking element 19 is guided and / or supported.
- the adjusting element 16 is at an angle of rotation about the longitudinal axis of the
- Carrier shaft 11 is arranged offset to actuator pins 15. To the
- Adjusting elements 16 are arranged offset coupling pins 17a, 17b, 17c in the axial direction.
- the first coupling pin 17a engages in the second switching groove 14b of the first sliding cam element 12a.
- the second coupling pin 17b engages in the switching groove 14 of the second sliding cam element 12b and the third
- Coupling pin 17c engages in switching groove 14 of third sliding cam element 12c.
- a spring-ball locking device 24 is arranged between the first and the second coupling pin 17a, 17b. Other shapes are possible instead of the sphere.
- the adjusting element 16 has a stop element 27.
- the stop element 27 is designed as an extension which extends away in a direction orthogonal to a longitudinal direction of the adjusting element 16. Other shapes are possible.
- the stop element 27 is arranged between the first coupling pin 17a and the second coupling pin 17b. That is more precise
- Stop element 27 is arranged between the recesses or the notches for the spring-ball lock 14 and the first coupling pin 17a.
- the receiving element 18 arranged.
- the receiving element 18 has a single extension that extends in the direction of the camshaft 10.
- a stop 26 is arranged in the cylinder head 25.
- the stop 26 is designed as a recess in the cylinder head 25.
- the stop element 27 protrudes into the recess.
- FIG. 7 the exemplary embodiment according to FIG. 6 is shown without the cylinder head 25.
- the axial bearing 28 for the locking element 19 can be clearly seen.
- the axial bearing 28 is designed as a single part.
- the axial bearing has a connecting portion connected to the cylinder head 25.
- the axial bearing can be formed in one piece with the cylinder head 25.
- the axial bearing 28 includes a through gap.
- FIGS. 8 and 9 correspond to FIG.
- the cylinder head 25 in FIGS. 8 and 9 does not have an axial bearing 28 for the locking element 19.
- the locking element 19 is arranged on the support shaft 11 in a rotationally fixed manner and fixed in the axial direction.
- FIG. 10 shows a combination of those shown in FIGS. 6 to 9
- the stop 26 in FIG. 10 is not absolutely necessary. Alternatively, the stop 26 can be omitted.
- the freedom of movement of the adjusting element 16 is then limited by the spring-ball locking mechanism 24.
- the first switching groove 14a of the first sliding cam element 12a is used for
- the second switching groove 14b is used to receive the first coupling pin 17a.
- the receiving element 18 and the locking element 19 work together in such a way that the receiving element 18 moves through the recess in the circular disk.
- the recess in the circular disk is arranged at an angle of rotation to the longitudinal axis of the support shaft 11 such that the receiving element 18 when the first sliding cam element 12a is moved from one side to the other
- Disc changes. During the displacement of the second and / or the third sliding cam element 12b, 12c, the receiving element 18 is supported against the uninterrupted area of the circular disk.
- the circular disk or the annular disk is the same as when moving the second and third
- the locking element 19 with a circular disk forms an abutment for the extension of the adjusting element 16.
- the locking element 19 enables two defined positions of the adjusting element 16.
- the stop 26 and the stop element 27 limit the axial
- the spring-ball locking 24 of the adjusting element 16 prevents undesired movements of the adjusting element 16. This improves operational safety. It is also possible that the spring-ball lock 24 the
- the function of the stop 26 and the stop element 27 takes over. This is particularly advantageous if the locking element 19 is fixed on the carrier shaft in the axial direction.
- the linear guide of the adjusting element 16 is formed in the cylinder head 25. Active lubrication of the adjusting element 16 is thus possible.
- 11 and 12 as well as 13 and 14 show two further embodiments of a sliding cam system.
- the sliding cam system according to FIGS. 11 to 14 essentially correspond to the sliding cam system according to FIGS. 9 and 10.
- no extension is formed here as a stop element 27 on the adjustment element 16.
- the adjusting element 16 can have a stop element 27, as described in FIG. 6.
- the two sliding cam systems according to FIGS. 11 to 14 are arranged in a cylinder head 25 (not shown).
- the respective sliding cam system comprises three sliding cam elements 12a, 12b, 12c.
- the first sliding cam element 12a has in each case a shift gate 13 with a first shift groove 14a and a second shift groove 14b.
- the first switching groove 14a is Y-shaped.
- the first switching groove 14a can also have a different shape.
- the second switching groove 14b is designed as a radially circumferential groove.
- the second switching groove 14b is designed as an annular groove.
- the second switching groove 14b is arranged at an axial end of the first sliding cam element 12a and adjoins the first switching groove 14a.
- the second switching groove 14b can be arranged at a different axial position on the first sliding cam element 12a.
- the switching grooves 14 of the second and third sliding cam elements 12b, 12c are V-shaped.
- the sliding cam elements 12a, 12b, 12c each have two cam sections 29, in each of which three cam contours 22 are formed.
- a first cam section 29a adjoins the shift gate 13 of the
- a second cam section 29b is arranged at a distance from the first cam section 29a in the axial direction.
- the Cam sections 29a, 29b of the respective sliding cam element 12a, 12b, 12c are designed identically. Alternatively, it is possible for the cam sections 29a, 29b of the respective sliding cam element 12a, 12b, 12c to differ from one another.
- Zero lift cam contour 32 The two lift cam contours 31 are provided adjacent to one another in the axial direction.
- the zero lift cam contour 32 adjoins one of the two lift cam contours 31 in the axial direction.
- Zero lift cam contour 32 i.e. instead of the zero lift cam contour 32 have a further lift cam contour 31.
- the three lifting cam contours 31 can have different strokes.
- the valve of a cylinder assigned to the respective cam section 29 can be controlled in three different switching positions during operation. Specifically, two different strokes can be transmitted to the valve during operation by the two lifting cam contours 31 and the valve can thus be actuated. In addition, the cylinder assigned to the valve can be switched off during operation by means of the zero lift cam contour 32.
- the sliding cam system according to FIGS. 11 and 12 has two locking elements 19 which are arranged on the support shaft 11 in a rotationally fixed manner.
- the locking elements 19 are arranged axially between the second and third sliding cam elements 12b, 12c.
- the locking elements 19 are each formed by a circular disk or an annular disk.
- the respective circular disk or the annular disk has a recess. The recess extends along a circumferential direction of the circular disk or the annular disk.
- the two locking elements 19 are axially spaced from one another.
- the distance between the two locking elements 19 corresponds essentially to the width of a receiving element 18 of the adjusting element 16.
- the receiving element 18 is formed by a single extension 33 which extends in the direction of the Camshaft 10 extends.
- the extension 33 is designed such that a
- Gap 34 can accommodate the extension 33 axially between the two locking elements 19.
- the receiving element 18 is arranged between the second and the third coupling pin 17b, 17c.
- the adjusting element 16 here has a total of two receiving elements 18 in the form of extensions 33.
- the two receiving elements 18 extend in the direction of the longitudinal axis of the support shaft 11 and together form one
- the adjusting element 16 according to FIGS. 11 to 14 is arranged offset from the actuator pins 15 at an angle of rotation about the longitudinal axis of the carrier shaft 11.
- coupling pins 17a On the adjusting element 16, coupling pins 17a,
- the first coupling pin 17a engages in the second switching groove 14b of the first sliding cam element 12a.
- the second coupling pin 17b engages in the switching groove 14 of the second sliding cam element 12b and the third coupling pin 17c engages in the switching groove 14 of the third sliding cam element 12c.
- a multiple actuator 23 which has a total of three actuator pins 15, is also arranged in the region of the first sliding cam element 12a.
- the three actuator pins 15 make a total of three
- Axial positions of the three sliding cam elements 12a, 12b, 12c are possible.
- the first coupling pin 17a is, as described above, permanently engaged with the second switching groove 14b.
- the continuously circumferential second switching groove 14b enables the adjusting element 16 to be shifted directly without a time offset, i.e. Adjusting element 16 and the first sliding cam element 12a move essentially simultaneously.
- first sliding cam element 12a and the adjusting element 16 are of a first
- the second and third sliding cam elements 12b, 12c are axially offset by the coupling pins 17a, 17b.
- the extension 33 is in the second axial position 36b between the two locking elements 19.
- Locking element 19 transmits. In the second axial position 36b, the locking element 19 is located in a region of the outer circumference between the two extensions 33.
- the first sliding cam element 12a with the adjusting element 16 is attached to a third,
- the extension 33 changes from the space 34 between the two locking elements 19 axially outward and cooperates with the second locking element 19 to transmit the adjustment forces.
- the extension 33 is located on the third
- the second extension 33 changes axially from the intermediate space 34 between the two locking elements 19 to the outside and interacts with the second locking element 19 to transmit the adjustment forces.
- the extension 33 is located on the third
- Locking element 19 is transmitted.
- the second extension 33 is located on the further outside of the locking element 19.
- a spring-ball lock 24 is arranged between the first and the second coupling pin 17a, 17b in order to releasably fix the adjusting element 16 in the longitudinal direction at the axial positions 36a, 36b, 36c.
- Other shapes are possible instead of the sphere.
- a three-stage control of a valve requires a total of three cam contours, in particular flub cam contours 31, zero lift cam contours 32, and a multiple actuator 23 with at least three actuator pins 15 in the sliding cam systems according to the invention.
- Sliding cam elements for controlling valves of only one cylinder two double sliding cam elements, which are designed to control valves of two cylinders.
- the sliding cam system according to FIGS. 15 and 16 is also arranged in a cylinder head 25 (not shown).
- the first of the two double sliding cam elements 12a ', 12b' each has a switching gate 13 with a first switching groove 14a and a second switching groove 14b.
- the design of the shift gate 13 and the shift grooves 14a, 14b are designed and arranged as described in FIGS. 11 to 14.
- the switching groove 14 of the second double slide cam element 12b ' is V-shaped.
- the double slide cam elements 12a ', 12b' each have four
- Two cam sections 29 are arranged in the longitudinal direction on one axial side of the shift gate 13. In other words it is
- Shift gate 13 arranged axially between two pairs of the cam sections 29 while the two first cam sections 29a of the pairs adjoin the
- Shift gate 13 of the double sliding cam element 12a ', 12b' is arranged at a distance in the axial direction from the first cam section 29a of the same pair.
- Cam sections 29a, 29b of the respective double sliding cam element 12a ', 12b' are designed identically. Alternatively, it is possible that the
- Cam sections 29a, 29b of the respective double slide cam element 12a ', 12b' differ from one another.
- the total of two cam contours 22 per cam section 29 form two lifting cam contours 31 with different strokes.
- the lifting cam contours 31 are provided adjacent to one another in the axial direction.
- the valve of a cylinder assigned to the respective cam section 29 can be controlled in two different switching positions during operation. Specifically, during operation, the lifting cam contours 31 can transfer two different strokes to the valve and thus actuate the valve.
- Double sliding cam elements 12a ', 12b' have a total of three cam contours 22, so that a three-stage control of a valve of a cylinder is made possible.
- the displacement process of the double sliding cam elements 12a ', 12b' takes place as described in FIGS. 1 to 4.
- FIGS. 15 and 16 only the actuator with the two actuator pins 15 is not shown.
- the configuration of the adjusting element 16 and the locking element 19 corresponds to that in FIG.
- FIGS. 13 and 14 described. These only differ in the number of possible axial positions. According to FIGS. 15 and 16, only two axial positions are possible for the axial displacement of the double sliding cam elements 12a ', 12b'. Furthermore, in contrast to FIGS. 13 and 14, there are no two
- Receiving elements 19 or extensions 33 are provided, but only a single extension 33.
- the extension 33 transmits the adjusting forces of the second double sliding cam element 12b ′ to the locking element 19.
- the locking element 19 is as in FIGS. 11 to 14
- a support shaft 11 of a further exemplary embodiment of a sliding cam system is shown.
- the locking element 19 is formed integrally with the support shaft 11.
- the locking element 19 is formed by a recess 37 in the support shaft 11.
- the recess 37 can be formed by milling and / or turning.
- the recess 37 is formed by two circumferential grooves 38 and a longitudinal passage 39 connecting the grooves 38.
- the grooves 38 are formed in the support shaft 11 in a radially circumferential manner.
- the receiving element 18 is dependent on the respective axial position 36a, 36b of the sliding cam element 12a, 12b or
- Double sliding cam element 12a ', 12b' partially arranged in one of the two grooves 38. If the axial position 36a, 36b, and thus the adjusting element 16, is changed during a shifting process, this is done
- Receiving element 18 the longitudinal passage 39 and changes from the first to the second circumferential groove 36a, 36b.
- the receiving element 18 is supported against the groove walls in order to transmit the forces that occur during the axial displacement to the carrier shaft 11.
- This configuration of the recess 37 is used in a two-stage control of the valves, in particular by means of two contours of the respective cam sections 29.
- the locking element 19 as a recess 37 of the support shaft 11 can be used in the sliding cam systems according to FIGS. 1 to 4 and / or FIGS. 15 and 16.
- the recess 37 can be formed by a total of three circumferential grooves 38 and two longitudinal passages 39.
- a longitudinal passage 39 connects two grooves 38, so that when the sliding cam elements 12a, 12b or
- Double sliding cam elements 12a ', 12b' a total of three axial positions 36a
- Fig. 18 shows a schematic representation of part of another
- FIG. 18 shows an adjusting element 16 with a receiving element 18, which is designed as an extension 33.
- the extension 33 is also designed as described in FIGS. 11 to 14.
- the receiving element 18 is not only used for power transmission or for
- each stop areas 41 are provided against which the adjusting element 16 strikes in the direction of displacement to limit the axial displacement path.
- the adjusting element 16 has two stop ends 42, which form the longitudinal ends of the adjusting element 16, which, during operation, are attached to the respective
- Hit stop area 41 Further alternatives for limiting the axial displacement path are possible.
- Stop element 27, as described in FIG. 7, have. This applies not only to the design of the stop element 27, but also to the type of
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Abstract
Description
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Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019107626.9A DE102019107626A1 (de) | 2019-03-25 | 2019-03-25 | Schiebenockensystem und Motor |
| PCT/EP2020/058182 WO2020193560A1 (de) | 2019-03-25 | 2020-03-24 | Schiebenockensystem und motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3947927A1 true EP3947927A1 (de) | 2022-02-09 |
| EP3947927B1 EP3947927B1 (de) | 2024-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20715302.4A Active EP3947927B1 (de) | 2019-03-25 | 2020-03-24 | Schiebenockensystem und motor |
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| Country | Link |
|---|---|
| US (1) | US12071869B2 (de) |
| EP (1) | EP3947927B1 (de) |
| CN (1) | CN113728152B (de) |
| DE (1) | DE102019107626A1 (de) |
| WO (1) | WO2020193560A1 (de) |
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| DE102020210260A1 (de) | 2020-08-12 | 2022-02-17 | Thyssenkrupp Ag | Schiebenockensystem |
| DE102020210263A1 (de) | 2020-08-12 | 2022-02-17 | Thyssenkrupp Ag | Schiebenockensystem und Brennkraftmaschine damit |
| DE102020210265A1 (de) | 2020-08-12 | 2022-02-17 | Thyssenkrupp Ag | Schiebenockensystem für eine Brennkraftmaschine mit integriertem Arretierelement |
| DE102020210262A1 (de) | 2020-08-12 | 2022-02-17 | Thyssenkrupp Ag | Schiebenockensystem und Brennkraftmaschine damit |
| DE102020210257A1 (de) | 2020-08-12 | 2022-02-17 | Thyssenkrupp Ag | Schiebenockensystem und Brennkraftmaschine damit |
| DE102020210264A1 (de) | 2020-08-12 | 2022-02-17 | Thyssenkrupp Ag | Sensorrad mit Arretierabschnitt, Sensorsystem und Schiebenockensystem mit Sensorrad |
| DE102020210258A1 (de) | 2020-08-12 | 2022-02-17 | Thyssenkrupp Ag | Schiebenockensystem |
| DE102020210259A1 (de) | 2020-08-12 | 2022-02-17 | Thyssenkrupp Ag | Schiebenockensystem |
| DE102021210649A1 (de) | 2021-09-23 | 2023-03-23 | Thyssenkrupp Ag | Schaltkulisse, Schiebenockensystem und Nockenwelle |
| DE102022208999A1 (de) * | 2022-08-30 | 2024-02-29 | Thyssenkrupp Ag | Zylinderkopfhaube, sowie Verfahren zur Montage einer Zylinderkopfhaube |
| DE102022210544A1 (de) | 2022-10-06 | 2024-04-11 | Thyssenkrupp Ag | Schiebenockensystem, sowie Verfahren zur Betätigung eines Schiebenockensystems |
| DE102023107254A1 (de) | 2023-03-22 | 2024-09-26 | Thyssenkrupp Ag | Schiebenockensystem |
| DE102023107438A1 (de) | 2023-03-24 | 2024-09-26 | Thyssenkrupp Ag | Schiebenockenwelle, sowie Verfahren zum Verschieben eines Schiebenockens |
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|---|---|---|---|---|
| DE102007010149A1 (de) | 2007-03-02 | 2008-09-04 | Audi Ag | Ventiltrieb für Gaswechselventile einer Brennkraftmaschine mit verschiebbarem Nockenträger und Doppelschneckentrieb |
| DE102007010157A1 (de) * | 2007-03-02 | 2008-06-26 | Audi Ag | Ventiltrieb einer Brennkraftmaschine mit dreistufigen Nockenprofilgruppen und axial beweglichen Kulissen- oder Eingriffselementen |
| DE102007037232A1 (de) | 2007-08-07 | 2009-02-12 | Eto Magnetic Gmbh | Vorrichtung zur Nockenwellenverstellung einer Brennkraftmaschine |
| DE102007037747B4 (de) | 2007-08-10 | 2022-06-15 | Mercedes-Benz Group AG | Brennkraftmaschinenventiltriebumschaltvorrichtung |
| DE102007052249B4 (de) | 2007-11-02 | 2023-12-14 | Mercedes-Benz Group AG | Brennkraftmotorenventiltriebumschaltvorrichtung |
| DE102008005639B4 (de) | 2008-01-23 | 2021-10-21 | Daimler Ag | Ventiltriebvorrichtung |
| DE102008050776A1 (de) | 2008-10-08 | 2010-04-15 | Daimler Ag | Ventiltriebvorrichtung |
| DE102008054254A1 (de) | 2008-10-31 | 2010-05-06 | Schaeffler Kg | Nockenwelle für einen hubvariablen Ventiltrieb einer Brennkraftmaschine |
| DE102008060166A1 (de) | 2008-11-27 | 2010-06-02 | Dr.Ing.H.C.F.Porsche Aktiengesellschaft | Ventiltrieb für Gaswechselventile einer Brennkraftmaschine |
| DE202009011804U1 (de) | 2009-09-01 | 2011-01-13 | Eto Magnetic Gmbh | Vorrichtung zur Nockenwellenverstellung einer Brennkraftmaschine |
| JP5615828B2 (ja) | 2009-10-06 | 2014-10-29 | ヤマハ発動機株式会社 | エンジンの動弁装置 |
| DE102010004591B4 (de) | 2010-01-14 | 2021-08-19 | Audi Ag | Gebauter Nockenträger für Ventiltrieb |
| DE102010021903A1 (de) * | 2010-05-29 | 2011-12-01 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Ventiltrieb zur Betätigung von Gaswechselventilen von Brennkraftmaschinen |
| DE102010025100A1 (de) | 2010-06-25 | 2011-12-29 | Neumayer Tekfor Holding Gmbh | Verstellbare Nockenwelle |
| DE102011011456A1 (de) * | 2011-02-17 | 2012-08-23 | Daimler Ag | Brennkraftmaschinenventiltriebvorrichtung |
| DE102011001123A1 (de) | 2011-03-07 | 2012-09-13 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Brennkraftmaschine |
| DE102011002141B4 (de) * | 2011-04-18 | 2022-07-14 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Nockenwelle mit unterschiedliche Nockenprofile aufweisendem Schiebestück |
| DE102011078434A1 (de) | 2011-06-30 | 2013-01-03 | Schaeffler Technologies AG & Co. KG | Lagerung einer Nockenwelle mittels Wälzlagern |
| DE102011108728B4 (de) * | 2011-07-27 | 2013-02-07 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Ventiltrieb für Brennkraftmaschinen zur Betätigung von Gaswechselventilen |
| DE102011080267A1 (de) | 2011-08-02 | 2013-02-07 | Schaeffler Technologies AG & Co. KG | Verschiebenutkontur von Schiebenockeneinheiten einer Hubkolbenbrennkraftmaschine |
| DE102011053333A1 (de) | 2011-09-07 | 2013-03-07 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Mehrzylindrige Brennkraftmaschine sowie Verfahren zum Betreiben einer mehrzylindrigen Brennkraftmaschine |
| DE102011054218B4 (de) * | 2011-10-06 | 2023-03-23 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Brennkraftmaschine und Ventiltrieb für eine Brennkraftmaschine |
| DE102011116653B4 (de) | 2011-10-21 | 2023-11-09 | Mercedes-Benz Group AG | Ventiltriebvorrichtung |
| DE102011085702A1 (de) | 2011-11-03 | 2013-05-08 | Schaeffler Technologies AG & Co. KG | Ventiltrieb einer Brennkraftmaschine mit zumindest einem Schiebenockensystem |
| DE102012022123A1 (de) | 2011-12-17 | 2013-05-23 | Daimler Ag | Nocken-Schiebestück und Verfahren zu dessen Herstellung |
| DE102011121684B4 (de) | 2011-12-17 | 2024-02-08 | Mercedes-Benz Group AG | Nocken-Schiebestück |
| DE102012004419A1 (de) | 2012-03-08 | 2013-09-12 | Daimler Ag | Kraftfahrzeugventiltriebverstellvorrichtung |
| DE102012004911B4 (de) | 2012-03-09 | 2018-10-04 | Audi Ag | Ventiltrieb einer Brennkraftmaschine |
| DE102012008555B4 (de) | 2012-04-27 | 2014-11-27 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Vorrichtung für einen Ventiltrieb zum Umschalten des Hubs von Gaswechselventilen einer Brennkraftmaschine |
| JP5920624B2 (ja) * | 2012-06-05 | 2016-05-18 | 株式会社デンソー | カムシフト装置 |
| DE102012217300A1 (de) | 2012-09-25 | 2014-03-27 | Schaeffler Technologies Gmbh & Co. Kg | Gebautes Nockenstück für einen hubvariablen Ventiltrieb |
| DE102012112038B4 (de) | 2012-12-10 | 2021-09-09 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Schiebenocken für einen Ventiltrieb einer Brennkraftmaschine |
| DE102012112795A1 (de) | 2012-12-20 | 2014-06-26 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Ventiltrieb für eine Brennkraftmaschine |
| DE102013009757A1 (de) | 2013-06-11 | 2014-12-11 | Daimler Ag | Ventiltriebvorrichtung für eine Brennkraftmaschine |
| DE102013111410B4 (de) | 2013-10-16 | 2024-12-24 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Ventiltrieb für eine Brennkraftmaschine sowie Brennkraftmaschine |
| DE102013113348B4 (de) | 2013-12-02 | 2017-04-13 | Karlheinz Mayer | Vorrichtung zum Messen von DNA-Quantenzuständen sowie Verwendung derselben |
| DE102013113349B4 (de) | 2013-12-03 | 2021-02-11 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Schiebenockensystem mit einer Arretierung |
| DE102014007189B4 (de) | 2014-05-15 | 2021-03-18 | Audi Ag | Ventiltrieb für Gaswechselventile mit Nockenträger- und Grundwellenverzahnung im Rastmittelbereich |
| DE102014216058A1 (de) | 2014-08-13 | 2016-02-18 | Schaeffler Technologies AG & Co. KG | Verriegelungsvorrichtung für eine schaltbare Ventiltriebkomponente |
| WO2016161281A1 (en) * | 2015-04-02 | 2016-10-06 | Eaton Corporation | Split axial cam shifting system variable valve actuation functions |
| WO2016177479A1 (de) | 2015-05-05 | 2016-11-10 | Volkswagen Aktiengesellschaft | Ventiltriebvorrichtung |
| DE102015220602A1 (de) | 2015-10-22 | 2017-04-27 | Schaeffler Technologies AG & Co. KG | Kulissenabschnitt für ein Nockenstück eines Ventiltriebs |
| US10539051B2 (en) * | 2015-11-06 | 2020-01-21 | Borgwarner Inc. | Valve operating system providing variable valve lift and/or variable valve timing |
| FR3043716B1 (fr) * | 2015-11-12 | 2019-10-11 | Psa Automobiles Sa. | Ensemble de distribution variable pour un moteur a combustion interne |
| DE102016204892A1 (de) | 2016-03-23 | 2017-09-28 | Mahle International Gmbh | Ventiltrieb für eine Brennkraftmaschine |
| DE102016005454A1 (de) | 2016-05-03 | 2017-11-09 | Daimler Ag | Ventiltriebvorrichtung, insbesondere für eine Brennkraftmaschine |
| DE102017205151A1 (de) * | 2017-03-27 | 2018-09-27 | Mahle International Gmbh | Ventiltrieb für eine Brennkraftmaschine |
| WO2018195370A1 (en) | 2017-04-20 | 2018-10-25 | Borgwarner Inc. | Variable valve lift valve operating system having one or more motion control rings |
| DE102017221870A1 (de) * | 2017-12-05 | 2018-11-22 | Bayerische Motoren Werke Aktiengesellschaft | Ventiltrieb für eine Brennkraftmaschine |
| DE102018111942A1 (de) | 2018-05-17 | 2019-11-21 | Schaeffler Technologies AG & Co. KG | Schiebenockenwelle |
| DE102018112417A1 (de) | 2018-05-24 | 2019-11-28 | Schaeffler Technologies AG & Co. KG | Schiebenockenwelle |
| DE102018112415A1 (de) | 2018-05-24 | 2019-11-28 | Schaeffler Technologies AG & Co. KG | Schiebenockenwelle |
| DE102018112414A1 (de) | 2018-05-24 | 2019-11-28 | Schaeffler Technologies AG & Co. KG | Schiebenockenwelle |
| DE102018112416A1 (de) | 2018-05-24 | 2019-11-28 | Schaeffler Technologies AG & Co. KG | Schiebenockenwelle |
| DE102018112419A1 (de) | 2018-05-24 | 2019-11-28 | Schaeffler Technologies AG & Co. KG | Schiebenockenwelle |
| DE102019102103A1 (de) | 2019-01-29 | 2019-11-28 | Schaeffler Technologies AG & Co. KG | Schaltstange zum Schalten zumindest einer Ventiltriebkomponente in einer Brennkraftmaschine und Verfahren zur Herstellung einer Schaltstange |
-
2019
- 2019-03-25 DE DE102019107626.9A patent/DE102019107626A1/de not_active Withdrawn
-
2020
- 2020-03-24 WO PCT/EP2020/058182 patent/WO2020193560A1/de not_active Ceased
- 2020-03-24 EP EP20715302.4A patent/EP3947927B1/de active Active
- 2020-03-24 CN CN202080031290.XA patent/CN113728152B/zh active Active
- 2020-03-24 US US17/598,091 patent/US12071869B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| EP3947927B1 (de) | 2024-10-16 |
| CN113728152B (zh) | 2024-06-04 |
| DE102019107626A1 (de) | 2020-10-01 |
| US20220186640A1 (en) | 2022-06-16 |
| WO2020193560A1 (de) | 2020-10-01 |
| US12071869B2 (en) | 2024-08-27 |
| CN113728152A (zh) | 2021-11-30 |
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