EP3938630A1 - Elektromagnetische stellanordnung - Google Patents
Elektromagnetische stellanordnungInfo
- Publication number
- EP3938630A1 EP3938630A1 EP20706412.2A EP20706412A EP3938630A1 EP 3938630 A1 EP3938630 A1 EP 3938630A1 EP 20706412 A EP20706412 A EP 20706412A EP 3938630 A1 EP3938630 A1 EP 3938630A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- magnetic field
- shift gate
- detection means
- detection
- electric field
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/121—Guiding or setting position of armatures, e.g. retaining armatures in their end position
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/142—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices
- G01D5/145—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices influenced by the relative movement between the Hall device and magnetic fields
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/081—Magnetic constructions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/16—Rectilinearly-movable armatures
- H01F7/1607—Armatures entering the winding
-
- 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
- F01L2013/10—Auxiliary actuators for variable valve timing
- F01L2013/101—Electromagnets
-
- 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
- F01L2800/00—Methods of operation using a variable valve timing mechanism
- F01L2800/14—Determining a position, e.g. phase or lift
-
- 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
- F01L2820/04—Sensors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/081—Magnetic constructions
- H01F2007/086—Structural details of the armature
Definitions
- the present invention relates to an electromagnetic actuating arrangement according to the preamble of claim 1, an electromagnetic actuating device according to the preamble of claim 1 1 and a use according to claim 15.
- Such an actuating arrangement is known from practice, comprising an electromagnetic actuating device, which is particularly known as
- Camshaft adjusting device is suitable and has an armature unit which can be driven in response to an energization of a stationary, axially aligned coil unit along or parallel to the axial direction.
- the armature unit is designed to interact with a slide and / or tappet unit extending in the axial direction, in particular a
- Camshaft adjustment of an internal combustion engine can be effected.
- the slide and / or tappet unit engages in a shift gate, which can in particular be arranged on a slide cam.
- the shift gate can in particular be arranged on a slide cam.
- Shift gate arranged on the circumference of the sliding cam.
- the shift gate can be penetrated by a transverse center plane.
- known setting arrangements or sliding cam actuators can have Hall sensors for detecting the armature position. These Hall sensors are arranged completely within the actuator housing and can only determine the axial position of the shift gate indirectly via the position of the armature. Such Hall sensors for lifting position detection of the armature of the
- Sliding cam actuators are mostly realized by overmolding in a plastic housing.
- the disadvantage of such a stroke detection on the armature is that it cannot be determined directly in which axial position the shift gate is located.
- Another disadvantage of the lift detection on the armature is that the integrated sensor can only detect whether an armature is retracted or extended. In the case of a sliding cam actuator with several armatures, however, it is not possible to distinguish which armature is extended. A second Hall sensor would also be required for this.
- Another possibility for determining the position of the shift gate is to arrange a separate sensor completely outside of the actuator housing.
- a disadvantage of this construction is the exposed position of the sensor on a cylinder head.
- such a sensor requires additional fastening elements for its installation on the cylinder head and considerable installation space.
- the construction of the fastening elements and a mounting geometry - usually on a cylinder head cover in the context of an internal combustion engine - entails considerable additional effort.
- an additional connector with a cable harness is required to connect the sensor.
- Sensors are also known from practice which can detect the direction of the magnetic field by means of perpendicular and also by means of inclined magnetic field lines with respect to the sensitive surface.
- detection means also referred to as 3D sensors, determine from the direction of the magnetic field the exact space would be in three spatial directions and are cost-intensive.
- the invention is therefore based on the object, an electromagnetic actuator assembly, an electromagnetic actuator and the To propose the use of the actuating arrangement which overcomes the problems of the prior art, in particular by creating an actuating arrangement which enables cost-effective manufacture, a flexible structural design and high-quality and clear position detection of the shift gate while at the same time requiring little installation space.
- an electromagnetic actuating arrangement comprising an electromagnetic actuating device, in particular a camshaft adjusting device, with a housing and at least one armature unit which can be driven in response to an energization of a stationary, axially oriented coil unit along or parallel to the axial direction and which can interact with at least one slide and / or tappet unit extending in the axial direction, in particular a tappet unit causing camshaft adjustment of an internal combustion engine, is formed.
- the actuating arrangement also comprises at least one shift gate which can be arranged on a sliding cam and is penetrated by a transverse central plane.
- the actuating device comprises a detection device for contactless magnetic and / or electrical interaction with the shift gate, which at least one Includes magnetic field and / or electric field detection means, which is designed to create and / or detect a detection field acting directly on the shift gate, and comprises a detection field evaluation means, which is designed to determine the position of the shift gate by means of the measured detection field.
- the magnetic field and / or electric field detection means is at least partially arranged outside the housing of the actuating device.
- the advantageous effect also results in particular from the fact that the shape of the adjusting device and the positioning of the magnetic field and / or electric field detection means can be designed very flexibly and a single common plug connection for the adjusting device and the magnetic field and / or electric field detection means can be formed is.
- the previously used stroke sensor for determining the armature position and thus for indirectly determining the shift gate position can be omitted, which opens up design leeway, creates a low level of design complexity and furthermore lowers costs.
- the axial position of the shift gate can be detected by means of the magnetic field and / or electric field detection means, preferably in that a measured analog signal is first converted into a digital signal and in that, for at least defined axial positions of the shift gate, characteristic position-related magnetic fields and / or electric fields (voltage potential) and / or sensor signal values are known and / or can be stored in a memory of the evaluation means and / or by comparing and / or offsetting the currently recorded detection field with the stored data or a
- Detection field map (for example magnetic field map) by the evaluation means, the axial position of the shift gate can be determined.
- the detection field can for example be a magnetic, an electromagnetic and / or an electric field.
- the detection field is deserted at least in the space between the detection means and the shift gate.
- the evaluation means is basically a technical intelligence which is designed to process and / or evaluate the signal from the magnetic field and / or electric field detection means. It can be, for example, an engine control unit with which the actuating device for
- the evaluation means can, however, also be integrated directly into the housing as a self-sufficient or separate processing unit for the engine control unit in order to form an “embedded system”.
- the transverse center plane which extends through the shift gate is arranged in such a way that the adjustment axis which axially extends through the shift gate coincides with a normal vector of the transverse center plane.
- the transverse center plane is arranged geometrically in the center.
- the magnetic field detection means comprises a magnetic field sensor, in particular a Hall sensor, preferably a linear Hall sensor.
- a Hall sensor is inexpensive and contributes in an advantageous manner to the effects according to the invention, in particular in that it can detect the deformation of the detection field caused by the shift gate.
- a linear Hall sensor is particularly suitable for position detection, since its output does not assume a discrete switching state depending on the detection field, but rather outputs a signal proportional to the field strength.
- This output signal can be made available as a pulse width modulated signal (PWM signal), preferably to a control device or to the detection field evaluation means.
- PWM signal pulse width modulated signal
- the magnetic field detection means additionally or alternatively comprises a permanent magnet means for creating the detection field.
- This generated magnetic or electromagnetic field is particularly suitable in the setting arrangement according to the invention. Since the magnetic field detection means has a considerable spatial distance from the coil unit compared to the arrangements known from the prior art, the own magnetic field generated by the permanent magnet is useful for determining the position of the shift gate. Alternatively or additionally, it is conceivable that the electric field
- Detection means is a capacitive sensor.
- a position of the shift gate can also be detected when non-conductive materials such as plastic are used for this.
- the switching gate serves as a switching flag that changes the detection field in the case of a capacitive sensor. This change can be measured by means of a capacitive sensor and assigned to an axial shift gate position.
- a longitudinal central axis extending through the at least one magnetic field and / or electric field detection means in the longitudinal direction of an adjustment axis of the
- the at least one magnetic field and / or electric field detection means is thus arranged eccentrically with respect to the central position in order to generate a clear signal. If the magnetic field and / or electric field detection means be centered on the
- the detection of the shift gate position would possibly be subject to strong tolerances and thus not robust and reliable.
- the signal could not be clearly assigned to a shift gate position.
- Mirror plane of symmetry of the shift gate is arranged.
- the the The mirror symmetry plane extending through the shift gate is arranged in such a way that the adjustment axis extending axially through the shift gate coincides with a normal vector of the transverse center plane.
- the mirror plane of symmetry can coincide with the transverse center plane - but it does not have to. In this case, mirror symmetry can mean complete symmetry, but also mirror symmetry in sections. It is decisive that, at least in the engagement position, there are different shift gate geometries on both sides of the magnetic field and / or electric field detection means, viewed in the direction of the adjustment axis.
- This embodiment is based on the idea that a magnetic field and / or electric field detection means, which is aligned or arranged in the middle of a shift gate that is at least partially mirror-symmetrical with respect to its mirror symmetry plane, may either not deliver any or no clear signal.
- the magnetic field and / or electric field detection means can now output different signals in a simple and unambiguous manner, which clearly make at least the axial position of the shift gate recognizable.
- This embodiment enables the unambiguous detection of up to three switching positions, for example using only a single detection means.
- An engagement position or a switching position is given when at least one tappet unit can functionally intervene in the shift gate.
- the magnetic field detection means can advantageously be designed to detect the negative and / or positive magnetic field or flux density and / or the field strength. It is also conceivable that the detection means only detect those magnetic field lines that are oriented perpendicular to its sensitive surface. By shifting the shift gate, the proportion of the magnetic field lines detected by the detection means changes. In addition, it can Detection means detect the direction of the magnetic flux (positive / negative) of the vertical magnetic field lines.
- a known detection means is unnecessary, which detects the direction of the magnetic field not only by means of vertical but also by means of oblique magnetic field lines with respect to the sensitive surface and is also referred to as a 3D sensor.
- Another advantage of the invention is that the position of the shift gate can be detected by means of a significantly more cost-effective detection means.
- a longitudinal center axis of the at least one magnetic field and / or electric field detection means extending through the at least one magnetic field and / or electric field detection means is arranged and / or can be arranged such that in the longitudinal direction of an adjustment axis of the sliding cam on both sides of the magnetic field and / or electric field detection means the shift gate has different external geometry courses, preferably different detectable geometries.
- the magnetic field and / or electric field detection means is arranged at least partially in the area between the housing and the shift gate. This allows the detection means to go even further away from the coil unit and closer to the shift gate.
- Such an arrangement leads in particular to a housing with a low complexity and little space requirement.
- the magnetic field and / or electric field detection means can be at least partially integrated into the housing of the electromagnetic actuating device, with the housing being able to be manufactured using an injection molding process.
- the injection molding process can be a plastic injection molding process.
- the detection means can be integrated into the housing in a particularly advantageous manner. Only a single, preferably one-piece housing can therefore be designed.
- the adjusting arrangement is a
- Magnetic field shielding means for shielding the detection field from the magnetic field of the at least one coil unit.
- This shielding means can for example be the housing or a housing section in order to avoid influencing the detection field, which can lead to an unambiguous detection.
- the electromagnetic actuating device can have a plurality of electromagnetic actuator units which can be selectively actuated for the independent exertion of an actuating force on a corresponding plurality of plunger units mounted axially parallel to one another.
- the electromagnetic actuating device can alternatively have a single actuator unit which can be selectively activated to exert an actuating force on a tappet unit.
- An actuator unit can comprise a coil unit and an armature unit as well as a slide and / or tappet unit - for example, an embodiment with two actuator units is conceivable.
- the actuator units can in one common, preferably cylindrical and / or hollow cylindrical housing can be provided. As a result, an adjusting device with several slide and / or tappet units can also be created, which takes up a small amount of space.
- the direct distance between the sensitive surface of the at least one magnetic field and / or electric field detection means and the shift gate is between 0 mm and 2.0 mm, preferably between 0.5 mm and 1.0 mm.
- the direct distance can also be referred to as the radial distance in relation to the shift gate.
- the distance can, however, be subject to tolerances to a small extent. The smallest possible distance is preferred, which leads to a greater signal strength.
- an electromagnetic adjusting device is also proposed, in particular a camshaft adjusting device, with a housing and at least one armature unit which can be driven along or parallel to the axial direction in response to a current flow to a stationary, axially aligned coil unit, which armature unit is to interact with at least one in the axial direction extending slide and / or tappet unit, in particular a tappet unit effecting a camshaft adjustment of an internal combustion engine.
- the actuating device comprises a detection device which comprises at least one magnetic field and / or electric field detection means which is designed to create and / or detect a detection field that can be directly applied to the shift gate.
- the adjusting device is designed to work together with a detection field evaluation means, which is designed to determine the position of the shift gate by means of the measured detection field, the magnetic field and / or electric field detection means is arranged at least partially outside the housing.
- the electromagnetic actuating device according to the invention essentially has the advantages of the actuating arrangement, to which reference is hereby made.
- a longitudinal central axis extending through the at least one magnetic field and / or electric field detection means is preferably arranged in a direction parallel to a longitudinal plunger plane extending longitudinally through the at least one plunger unit at a distance from a plunger central plane, the distance preferably being half the direct distance corresponds between two immediately adjacent ram units.
- the magnetic field detection means comprises a magnetic field sensor, in particular a Hall sensor, preferably a linear Hall sensor, and / or a permanent magnet means. This results in the aforementioned advantages.
- the actuating device comprises only a single magnetic field and / or electric field detection means, preferably designed for the exclusive detection of perpendicular to a sensitive surface aligned magnetic field lines.
- the actuating arrangement can also comprise only a single magnetic field and / or electric field detection means. Since, with the aid of the invention, an unambiguous detection of up to three switching positions is possible with only one detection means, no further detection means, as was previously known, are required with such a construction.
- the use of the electromagnetic actuating arrangement according to one of claims 1 to 10 or the electromagnetic actuating device according to one of claims 1 1 to 14 in an internal combustion engine is proposed, use in a motor vehicle internal combustion engine being preferred.
- the advantages according to the invention are particularly evident in such a use.
- features disclosed according to the device should also apply and be claimable as disclosed according to the method.
- features disclosed in accordance with the method should also apply and be claimable as disclosed in accordance with the device.
- FIG. 1 a -1 c schematic views of an inventive
- FIG. 2 a side view of the adjusting device according to FIG. 1 a;
- FIG. 3 a perspective view of the adjusting device according to FIG.
- FIG. 4 a view from below of the adjusting device according to FIG. 1 a; 5: a diagram of a magnetic field measurement;
- FIG. 8 a view from below of the adjusting device according to FIG. 7; and FIG. 9: a side view of the adjusting device according to FIG. 7.
- FIGS. 1 a to 1 c show identical elements in three different positions of a shift gate 12, the shift gate 12 being axially adjustable along an adjustment axis 30, for example to adjust a camshaft.
- the shift gate 12 being axially adjustable along an adjustment axis 30, for example to adjust a camshaft.
- FIGS. 1 a to 1 c show identical elements in three different positions of a shift gate 12, the shift gate 12 being axially adjustable along an adjustment axis 30, for example to adjust a camshaft.
- FIGS. 1 a to 1 c show identical elements in three different positions of a shift gate 12, the shift gate 12 being axially adjustable along an adjustment axis 30, for example to adjust a camshaft.
- An adjusting arrangement which is shown in FIGS. 1a to 6c, comprises an electromagnetic adjusting device 2, which is designed as a camshaft adjusting device.
- the actuating device 2 has a housing 4, within which two armature units (not shown) can be driven in response to a current supply to two stationary, axially aligned coil units along or parallel to the axial direction.
- the actuating device 2 thus comprises a plurality of electromagnetic actuator units which can be selectively activated for the independent exertion of an actuating force on a corresponding plurality of slides and / or tappets 8, 10 mounted axially parallel to one another.
- Each armature unit interacts with a tappet unit 6, 7 which extends in the axial direction and which in particular are each designed as a tappet unit 6, 7 which effects a cam adjustment of an internal combustion engine.
- the tappet unit 6 includes the tappet 8 and the tappet unit 7 includes the tappet 10.
- Each of the tappets 8, 10 is assigned a separate anchor unit.
- the tappets 8 and 10 are arranged adjacent to one another in the axial adjustment direction of the shift gate 12 and penetrated by a tappet longitudinal plane 58 shown in FIGS. 2 and 4 in their longitudinal direction.
- the adjusting arrangement also includes the shift gate 12, which is arranged on a sliding cam 14.
- the shift gate 12 has three groove walls 16, 18 and 20, so that a guide groove 22 and 24 for the tappets 8 and 10 is formed between adjacent groove walls 16 and 20 or between 20 and 18. There are thus three set positions, which are shown in FIGS. 1 a to 1 c. At least one of the tappets 8 and 10 can be used for the axial adjustment of the shift gate 12 in at least one corresponding guide groove 22, 24 engage. At least one of the groove walls 16, 18 and 20 interacts with the detection field and change or deform it depending on the axial position of the shift gate 12.
- the shift gate 12 is penetrated by a transverse center plane 56 in such a way that it is supported by the adjustment axis 30 which axially penetrates the shift gate 12 is also penetrated as the normal axis.
- the transverse center plane 56 intersects the plunger longitudinal plane 58 at a right angle. In the axial direction of the shift gate 12, the transverse center plane 56 is arranged geometrically in the center. A mirror symmetry plane of the shift gate 12 without a reference symbol coincides with the transverse center plane 56.
- the actuating device 2 has a detection device or a single shift gate position detection device which includes a magnetic field detection means which is designed as a linear Hall sensor 26.
- the magnetic field detection means or the Hall sensor 26 serves to detect a detection field which acts directly on the shift gate 12.
- the actuating arrangement comprises a permanent magnet, not shown, for creating the detection field, which is located between the Hall sensor 26 and the shift gate 12.
- the setting arrangement can have a detection field evaluation means 32, which is designed to determine the position of the shift gate 12 by means of the measured detection field.
- a data line 36 can be provided, which is shown wired, but can also be wireless and connects one plug connector 50 to the detection field evaluation means 32 .
- the actuating arrangement can comprise a magnetic field shielding means for shielding the detection field from the at least one magnetic field of the at least one coil unit of the actuating device 2.
- the Hall sensor 26 is at least partially arranged outside the housing 4 in such a way that it is arranged in the area between the housing 4 and the shift gate 12, as shown in particular by the side view in the direction of the adjustment axis 30 in FIG. 2.
- the direct distance (A) between the sensitive surface of the Hall sensor 26 and the shift gate 12 is between 0 mm and 2.0 mm.
- the Hall sensor 26 is partially integrated into the plastic housing 4 of the actuating device 2, the housing 4 being manufactured using an injection molding process. The Hall sensor 26 is thus arranged adjacent to the exit end of the housing 4.
- FIGS. 1 a to 6c comprises a single Hall sensor 26, which is penetrated by a longitudinal center axis 27 in its longitudinal direction and, based on a tappet center plane 52, is centered between the two tappets 8 and 10 in the direction of the adjustment axis 30 of the shift gate 12 or of the sliding cam 14 is arranged offset by an offset V1.
- the Hall sensor 26 has a sensitive surface 26a.
- the offset V1 shown does not correspond to exactly half of the direct distance between the two immediately adjacent ram units 6, 7, which is also shown in FIG.
- the plunger center plane 52 intersects the plunger longitudinal plane 58 at a right angle, as FIG. 4 shows.
- the Hall sensor 26 is arranged offset by an offset V2 with respect to the tappet longitudinal plane 58 in the direction of the shift gate 12 or the sliding cam 14, which is orthogonal to the direction of the adjustment axis 30, as FIGS. 2 and 4 show. 1 b also shows that the Hall sensor 26 in the direction of the adjustment axis 30 of the shift gate 12 or the sliding cam 14 by an offset V4 is arranged offset to the transverse center plane 56, this arrangement applies to the illustrated center position MS.
- a common plug connection 50 for the adjusting device 2 and / or the magnetic field detection means can be formed integrally with the housing 4.
- the basic knowledge of the invention is that the detection field changes or deforms with the axial adjustment of the shift gate 12, each axial position of the shift gate 12 generates its own characteristic field and thus every field change or deformation makes it possible to determine an axial position of the shift gate 12, provided the magnetic field - Detection means is suitably arranged.
- FIG. 3 shows the adjusting device 2 according to the first embodiment in isolation from a perspective view from below. Recesses 60 serving as fixing means can be seen, each of which can be penetrated by a screw for fixing the adjusting device 2 to a fixing partner.
- FIG. 4 shows in particular the offsets V1 and V2 and the obliteration and alignment of the planes 52 and 58 with one another.
- An offset V3 can also be seen between the longitudinal center axis 27 of the Hall sensor 26 and a longitudinal axis of the plunger 10.
- the offset V3 is zero in the event that offset V1 corresponds to exactly half of the direct distance between the two immediately adjacent ram units 6, 7. In other words, there is no offset V3 if the longitudinal center axis 27 and the longitudinal axis of the plunger 10 are not offset from one another transversely to the adjustment axis 30 - otherwise V3> 0.
- FIG. 5 now shows in a diagram the change in the measured magnetic field or the flux density in Gauss [G] compared to an axial adjustment of the shift gate 12 along its adjustment axis 30 in millimeters [mm].
- FIG. 5 shows a first tolerance position (0.5 mm ) the sensitive surface of the Hall sensor 26 to the shift gate 12 and a second tolerance position (1.0 mm) of the sensitive surface of the Hall sensor 26 to the shift gate 12, the tolerance position can also be referred to as sensor distance A. It can be seen that each axial position of the shift gate 12 generates a unique characteristic change in the magnetic field and thus an axial position of the shift gate 12 can be determined.
- Switching thresholds for the setting arrangement can be stored in a memory 34 of the evaluation means 32. Each switching threshold is defined via a duty cycle in percent and not directly via the Flux density value.
- the signal from the Hall sensor 26 is evaluated.
- the detected flux density value is output in a percentage duty cycle, that is to say in a PWM value.
- Duty cycle is understood as an expression for the percentage of the maximum power with which a pulse width modulation (PWM) controls a consumer.
- PWM pulse width modulation
- the left setting position of the shift gate 12 for the setting device 2 is entered in FIG. 5 by means of a dash-dot line, which setting position corresponds to FIGS. 1a and 6a.
- the plunger 10 can engage in the guide groove 22.
- the plunger 8 lies outside of a possibility of engagement in the shift gate 12.
- the sensor 26 lies between the two groove walls 16 and 20.
- a middle setting position or middle position MS is drawn in by means of a dashed line in FIG. 5, which corresponds to the axial position of the shift gate 12 shown in FIGS. 1 b and 6 b.
- the plunger 8 can engage in the guide groove 22 and the plunger 10 can engage in the guide groove 24.
- the sensor 26 lies between the two groove walls 18 and 20.
- FIG. 5 a right setting position is drawn in by means of a dash-dot-dot line, which corresponds to the axial position of the shift gate 12 shown in FIGS. 1c and 6c.
- the tappet 8 can engage in the guide groove 24, the tappet 10 being outside of a possibility of engagement in the shift gate 12 is, as shown in Figs. 1c and 6c.
- the sensor 26 lies on the right-hand side of the groove wall 18.
- evaluation means 32 is also designed to determine each axial position of the shift gate 12.
- the shift gate 12 can be moved between the left and the right set position by about 10.5 mm, this dimension being merely an example and depending on the distance between adjacent tappet units and shift gate geometries, different magnetic field profiles result.
- the middle position MS is about 5.25 mm away from the two outer setting positions. In the middle position MS, the Hall sensor 26 is shifted to the right by approximately 2.8 mm relative to the ordinate axis shown. This shift corresponds to dimension V4.
- the actuating device 2 comprises a single electromagnetic actuator unit, which can be selectively activated to exert an actuating force on a slide and / or tappet 8.
- the actuating device 2 has a detection device or a single shift gate position detection device which comprises a magnetic field detection means which is designed as a linear Hall sensor 26.
- the magnetic field detection means or the Hall sensor 26 serves to detect a detection field which acts directly on the shift gate 12.
- the Hall sensor 26 is partially integrated into the housing 4.
- the actuating arrangement comprises a permanent magnet, not shown, for creating the detection field, which is deserted between the Hall sensor 26 and the shift gate 12.
- the adjustment axis 30 is shown as a representative of the shift gate 12 and the sliding cam 14.
- the longitudinal center axis 27 and the longitudinal axis of the plunger 8 are arranged offset from one another transversely to the adjustment axis 30, which is why the offset V3 is not equal to zero.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019106365.5A DE102019106365A1 (de) | 2019-03-13 | 2019-03-13 | Elektromagnetische Stellanordnung |
PCT/EP2020/053633 WO2020182400A1 (de) | 2019-03-13 | 2020-02-12 | Elektromagnetische stellanordnung |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3938630A1 true EP3938630A1 (de) | 2022-01-19 |
Family
ID=69645931
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20706412.2A Pending EP3938630A1 (de) | 2019-03-13 | 2020-02-12 | Elektromagnetische stellanordnung |
Country Status (5)
Country | Link |
---|---|
US (1) | US11923137B2 (de) |
EP (1) | EP3938630A1 (de) |
CN (1) | CN113631800B (de) |
DE (1) | DE102019106365A1 (de) |
WO (1) | WO2020182400A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102021214169A1 (de) | 2021-12-11 | 2023-06-15 | Volkswagen Aktiengesellschaft | Schiebenockenanordnung mit Sensor zur Erfassung der Position der Schiebenocken |
DE102022128376A1 (de) | 2022-10-26 | 2024-05-02 | Eto Magnetic Gmbh | Verfahren zum Erkennen einer Nockenstückposition eines Ventiltriebs für eine Brennkraftmaschine und Ventiltrieb |
AT526912A1 (de) * | 2023-01-19 | 2024-08-15 | Ktm Ag | Ventiltriebvorrichtung |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006016650B4 (de) * | 2006-04-08 | 2019-05-16 | Schaeffler Technologies AG & Co. KG | Nockenwellentrieb für eine Brennkraftmaschine |
DE102008049103A1 (de) | 2008-09-26 | 2010-04-01 | Daimler Ag | Ventiltriebvorrichtung |
DE202010010371U1 (de) * | 2010-07-16 | 2011-10-17 | Eto Magnetic Gmbh | Elektromagnetische Stellvorrichtung |
DE102010035186A1 (de) * | 2010-08-24 | 2012-03-01 | Schaeffler Technologies Gmbh & Co. Kg | Ventiltrieb einer Brennkraftmaschine |
DE102011011455A1 (de) * | 2011-02-17 | 2012-08-23 | Daimler Ag | Ventiltriebbetätigungsvorrichtung |
DE102013206311A1 (de) * | 2012-05-14 | 2013-11-14 | Denso Corporation | Elektromagnetischer Aktor |
US9291478B2 (en) * | 2012-05-31 | 2016-03-22 | Allegro Microsystems, Llc | Magnetic field sensor with improved sensitivity to magnetic fields |
DE102012014048B4 (de) * | 2012-07-14 | 2019-06-27 | Audi Ag | Verfahren zum Betreiben eines Ventiltriebs einer Brennkraftmaschine |
DE102013204655A1 (de) * | 2013-03-18 | 2014-09-18 | Schaeffler Technologies Gmbh & Co. Kg | Ventiltrieb eines Verbrennungsmotors |
DE102013213125A1 (de) * | 2013-07-04 | 2015-01-08 | Schaeffler Technologies Gmbh & Co. Kg | Schiebenockensystem mit Arretierung und Positionserkennung |
JP6428484B2 (ja) * | 2015-05-20 | 2018-11-28 | 株式会社デンソー | 電磁アクチュエータ |
JP6672693B2 (ja) * | 2015-10-19 | 2020-03-25 | いすゞ自動車株式会社 | 可変動弁機構 |
US10280847B2 (en) * | 2017-03-29 | 2019-05-07 | GM Global Technology Operations LLC | Method for retracting a partially extended sliding camshaft actuator pin |
-
2019
- 2019-03-13 DE DE102019106365.5A patent/DE102019106365A1/de active Pending
-
2020
- 2020-02-12 WO PCT/EP2020/053633 patent/WO2020182400A1/de unknown
- 2020-02-12 EP EP20706412.2A patent/EP3938630A1/de active Pending
- 2020-02-12 US US17/438,491 patent/US11923137B2/en active Active
- 2020-02-12 CN CN202080020444.5A patent/CN113631800B/zh active Active
Also Published As
Publication number | Publication date |
---|---|
WO2020182400A1 (de) | 2020-09-17 |
US11923137B2 (en) | 2024-03-05 |
CN113631800B (zh) | 2024-09-20 |
US20220148781A1 (en) | 2022-05-12 |
CN113631800A (zh) | 2021-11-09 |
DE102019106365A1 (de) | 2020-09-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2352910B1 (de) | Elektromagnetische nockenwellen-verstellvorrichtung | |
EP1826533B1 (de) | Magnetischer Sensor | |
EP3938630A1 (de) | Elektromagnetische stellanordnung | |
EP2072961B1 (de) | Sensor | |
EP1862767A2 (de) | Sicherheits-Positionssensor für Zylinder, Zylinder mit einem solchen Positionssensor | |
WO2013127531A1 (de) | Kraftfahrzeugschloss | |
DE102011103169A1 (de) | Elektromagnetischer Antrieb, Antriebsanlage und deren Verwendung | |
DE10242841A1 (de) | Ausrücklager für eine Kupplung mit einem Magnetgeber | |
EP1832851B1 (de) | Positionsgeber für ein Stellelement, Linearmotor und Verfahren zum Herstellen eines Linearmotors | |
WO2013186001A1 (de) | Magnetgeberring einer rotorlagesensorik eines elektrisch kommutierten elektromotors | |
EP1150416B1 (de) | Elektrodynamischer Lineardirektantrieb | |
DE102009015486A1 (de) | Elektromagnetischer Aktuator | |
EP2860496A2 (de) | Linearmotor | |
DE102007019923A1 (de) | Nockenwellenverstellsystem | |
DE102013109165A1 (de) | Kraftfahrzeugschloss | |
DE102019204839B4 (de) | Elektromagnetische Antriebseinrichtung und damit ausgestattetes Proportional-Magnetventil | |
DE102006038162A1 (de) | Elektromotor mit Messsystem für Position oder Bewegung | |
EP2775485A2 (de) | Elektromagnetische Stellvorrichtung, insbesondere zur Nockenwellenverstellung einer Brennkraftmaschine | |
DE102007062099B4 (de) | Positionserfassungseinrichtung | |
DE102013102276B4 (de) | Verdrehschutz | |
DE4445069A1 (de) | Polarisiertes Relais | |
EP0569669B1 (de) | Doppelt wirkender elektromagnetischer Linearmotor | |
EP1088952B1 (de) | Kraftfahrzeug-Türschloss | |
DE102019112422A1 (de) | Lenkmomentensensoranordnung | |
DE102012204322B4 (de) | Bidirektionale elektromagnetische Stellvorrichtung |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20210824 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
17Q | First examination report despatched |
Effective date: 20230621 |