EP2775485A2 - Dispositif d'actionnement électromagnétique, notamment pour le réglage de l'arbre à cames d'un moteur à combustion interne - Google Patents

Dispositif d'actionnement électromagnétique, notamment pour le réglage de l'arbre à cames d'un moteur à combustion interne Download PDF

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Publication number
EP2775485A2
EP2775485A2 EP14156741.2A EP14156741A EP2775485A2 EP 2775485 A2 EP2775485 A2 EP 2775485A2 EP 14156741 A EP14156741 A EP 14156741A EP 2775485 A2 EP2775485 A2 EP 2775485A2
Authority
EP
European Patent Office
Prior art keywords
armature
pole core
electromagnetic actuator
operative connection
permanent magnet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP14156741.2A
Other languages
German (de)
English (en)
Other versions
EP2775485A3 (fr
EP2775485B1 (fr
Inventor
Tsuneo Suzuki
Harald Burkart
Sören Rosenbaum
Mikhail Revin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kendrion Villingen GmbH
Original Assignee
Kendrion Villingen GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kendrion Villingen GmbH filed Critical Kendrion Villingen GmbH
Priority to PL14156741T priority Critical patent/PL2775485T3/pl
Publication of EP2775485A2 publication Critical patent/EP2775485A2/fr
Publication of EP2775485A3 publication Critical patent/EP2775485A3/fr
Application granted granted Critical
Publication of EP2775485B1 publication Critical patent/EP2775485B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
    • H01H36/0006—Permanent magnet actuating reed switches
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1638—Armatures not entering the winding
    • H01F7/1646—Armatures or stationary parts of magnetic circuit having permanent magnet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F01L13/0036—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
    • F01L2013/0052—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction with cams provided on an axially slidable sleeve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2820/00—Details on specific features characterising valve gear arrangements
    • F01L2820/03—Auxiliary actuators
    • F01L2820/031—Electromagnets

Definitions

  • the invention relates to an electromagnetic actuator according to the preamble of patent claim 1 and an adjusting device for internal combustion engines, in particular for camshaft adjustment.
  • a generic electromagnetic actuator is as a device for the camshaft adjustment of an internal combustion engine from the DE 10 2007 037 232 A1 known.
  • Such devices for camshaft adjustment have two or more plungers, which are the same or opposite or independently moved by energizing coil units to cause by cooperation with a respective cam groove of the camshaft axial, predetermined adjustment of the camshaft, whereby a cam different cam tracks can be assigned, for example, to perform a cylinder shutdown or valve lift switching.
  • the known electromagnetic actuator according to the DE 10 2007 037 232 A1 has a multi-part plunger unit, which consists of a hollow plunger and an inner plunger held by this, wherein both the hollow plunger is associated with a pole core cooperating armature and designed as a permanent magnet inner plunger a flat armature. Further, a first coil unit surrounding the pole core and a second coil unit enclosing the hollow and inner plunger are provided, which is arranged axially to the first coil unit in the adjusting device.
  • This second coil unit causes a movement of the flat armature of the hollow tappet in the adjustment direction, that is pushed out of the housing in a parking position, but while the armature of the inner tappet magnetically adhere to the pole core due to its permanent magnetic property, so the inner tappet remains in its retracted rest position.
  • the first coil unit is energized so that the armature of the inner plunger is repelled due to the permanent magnetic property of the pole core.
  • a permanent magnet unit which holds the two armature assemblies in their rest positions, in which the first armature assembly is in magnetic operative connection with the first pole core and the second armature arrangement is in magnetic operative connection with the second pole core, without energy being required for this operating position.
  • the coil unit is only required for the magnetic active connections of the two armature arrangements to be influenced by the respective pole core, so that either the magnetic operative connection between the first armature arrangement and the first pole core or the magnetic operative connection between the second armature arrangement and the second pole core is released, to thereby allow movement of the first armature assembly together with the first actuator or movement of the second armature assembly together with the second actuator.
  • a first spring element is provided, which biases the first anchor assembly against the first pole core in the direction of adjustment.
  • a second spring element is provided which biases the second armature assembly against the second pole core in the direction of adjustment.
  • the permanent magnet unit is designed such that, when the coil unit is de-energized, both the first armature arrangement with the first pole core and the second armature arrangement with the second pole core are brought into magnetic operative connection becomes.
  • a permanent magnet unit has a field strength such that the holding force of the armature arrangements caused thereby at the respective pole cores can not be overcome by the respective spring elements, ie, that the permanent magnet unit is designed in such a way that the first and second magnetically active connections are produced Anchor assembly is held in their rest positions.
  • the coil unit is designed such that depending on the Bestromungsraum either the magnetic operative connection between the first armature assembly and the first pole core or the operative connection between the second armature assembly and the second pole core is repealed.
  • the second armature arrangement comprises an armature with an armature plate, wherein the armature plate is in operative connection with the second actuating element.
  • the second pole core is designed for slidably receiving the first armature arrangement with a blind hole.
  • the structural design of the adjusting device according to the invention is further simplified in that further education a tubular receiving element is provided, which is connected at one end to the first pole core and the other end to the second pole core.
  • the coil unit is arranged on this receiving element at the end of the tubular receiving element adjacent to the first pole core.
  • the permanent magnet unit is arranged on the second pole core radially circumferentially.
  • the permanent magnet unit is constructed of annular ring-like permanent magnets. This can be used to build a magnetic field generated by these permanent magnets, which is substantially homogeneous and in particular a high holding force for generating the magnetic active connections between the first and second armature assembly and the first and second pole core.
  • the first actuating element is designed as a plunger, on which the first armature arrangement immovably and the second armature arrangement is arranged displaceably.
  • the second adjusting element is also designed as a ram and is arranged offset axially in the adjusting device.
  • the plunger of the second actuating element is biased counter to the direction of adjustment by means of a spring element and bears against the anchor plate of the second anchor arrangement in a surface-locking manner.
  • a plunger is neither force nor cohesively connected to the anchor plate, but is loosely attached to the same. This results in a smooth movement in the movement of the plunger of the second anchor assembly.
  • the adjusting device according to the invention can advantageously be used as an adjusting unit for an internal combustion engine, in particular for adjusting a camshaft of the internal combustion engine.
  • the electromagnetic actuator 1 comprises a multi-part housing 2 for receiving its components and is constructed from a first tubular housing part 2a and a second housing part 2b.
  • the second housing part 2b is flange-mounted in the axial direction on the first housing part 2a.
  • a first pole core 20 forms an end face of this first housing part 2a.
  • This first pole core 20 is associated with a first armature arrangement 10, which consists of a on a first actuator 11 immovably arranged armature 12.
  • This first control element 11 is designed as a plunger and serves as an axis for guiding the first armature assembly 10.
  • the plunger 11 is mounted on the one hand in a central bore 23 of the pole core 20 and the other in the second housing section 2b.
  • the first pole core 20 has a radial circumferential flange 22 which produces the connection to the first housing part 2 a and is furthermore connected to a tubular receiving element 3, which receives a second pole core 40 at the opposite end.
  • This second pole core 40 has a blind hole 41 whose contour is adapted to the outer contour of the armature 12 of the first armature assembly 10, so that a movement of this armature 12 together with the plunger 11 from the rest position I in adjusting device R1 in a parking position II is possible , The frontal distance of this second pole core 40 to the first pole core 20 is kept small, so that even in the illustrated position of the armature 12, this is still partially enclosed by the second pole core 40. Furthermore, this second pole core 40 has a central through-bore 42 for receiving the plunger 11.
  • a bore 4 is provided in the second housing portion 2b, which in the direction of the second pole core 40 in a blind hole 5 ends.
  • an armature 32 of a second armature arrangement 30 which is displaceably arranged on the plunger 11 is provided, which cooperates with the second pole core 40.
  • a spring element 34 is arranged, so that when concerns of the armature 32 on the second pole core 40 of the armature 32 is biased in the direction of adjustment R1.
  • This second armature assembly 30 comprises, in addition to the armature 32, an anchor plate 33 connected to the same, which is circumferentially adapted to the inner contour of the first tubular housing part 2a, and a second actuating element 31 mounted in the second housing part 2b by means of a bore 6, which corresponds to the first actuating element 11 is also designed as a plunger.
  • a spring element 36 is provided, which is supported on the one hand in a blind hole 7 of the bore 6 and on the other hand at one end on the plunger 31 arranged receiving element 35.
  • An energizable coil unit 50 is arranged on the receiving element 3 and encloses the first pole core 20 and the voltage applied to this pole core 20 first armature assembly 10.
  • This coil unit 50 is followed in the axial direction of an annular permanent magnet unit 60, which surrounds the second pole core 40.
  • This permanent magnet unit 60 is made from a plurality of circular segment-like, for example, six circular segment magnets. These circular segment magnets are arranged in the adjusting device 1 such that their magnetic axes 61 are aligned in the radial direction with respect to the plunger 11 forming the central axis.
  • the one magnetic circuit 62 surrounds the coil unit 50 by the associated field lines starting from the permanent magnet unit 60 via the first housing part 2a, the first pole core 20, the armature 12 of the first armature assembly 10th and extend back into the permanent magnet unit 60 via the second pole core 40.
  • the permanent magnet unit 60 is arranged such that the direction of the field lines corresponds to the indicated directional arrows of the magnetic circuit 62.
  • the other magnetic circuit 63 is formed on the opposite side of the coil unit 50 and extends from the permanent magnet unit 60 via the second pole core 40 and the armature 32 of the second armature assembly 30 and closes again on the first housing part 2a. Again, the direction of the field lines corresponds to the indicated directional arrows of the magnetic circuit 63.
  • both the armature 12 of the first armature assembly 10 abut the first pole core 10 and the armature 32 of the second armature assembly 30 to the second pole core 40, the associated column S1 and S2 are negligible, resulting in a high field line density at these columns S1 and S2 yields and the resulting magnetic forces both the armature 12 and the armature 32 to the pole core 20 and 40 hold.
  • this is also surrounded on the edge side by the second pole core 40, so that even there, the magnetic resistance is low.
  • the properties of the permanent magnet unit 60 are selected such that the magnetic forces generated at the gaps S1 and S2 are greater than the corresponding restoring forces of the two spring elements 13 and 34.
  • the plunger 11 and 31 are held in their rest positions I.
  • FIG. 2 shows a control portion of a camshaft 70 with two cam grooves 71 and 72, so that by cooperation with a plunger as the first actuating element 11 and a further plunger as the second actuator 31, an axial back and forth the camshaft 70 is effected. If the plunger 11 is extended from its rest position I into its parking position II, ie lowered into the control groove 71, a simultaneous rotation of the camshaft causes its displacement in the direction L. The camshaft 70 is pushed back in the direction R in its initial position by extending the plunger 31 from its rest position I in the control groove 72 at simultaneous rotation of the camshaft 70, but only after the plunger 11 has been retracted to its rest position I.
  • FIG. 3 shows in a 360 ° -Abwicklung the two cam grooves 71 and 72, the associated actuating movements of the two plungers 11 and 31.
  • the energization of the coil unit 50 is therefore synchronized with the rotational movement of the camshaft 70.
  • the field lines of the magnetic circuit 62 generated by the permanent magnet unit 60 in the region of the first pole core 20, the armature 12 of the first anchor assembly 10 and the second pole core 40 are neutralized, so that under the spring force of the prestressed spring element 13 of the armature 12 together with the plunger 11 is moved in the direction of adjustment R1 until the armature 12 abuts the second pole core 40.
  • the plunger 11 has reached its parking position II and is engaged with the cam 71.
  • the magnetic circuit 63 further generated by the permanent magnet unit 60 is amplified, so that the holding force of the armature 32 of the second armature assembly 30 on the second pole core 40 increases.
  • the plunger 31 of the second anchor assembly 30 remains in its rest position I.
  • the plunger 11 remains in its parking position II until the camshaft 70 has reached the angle of rotation 270 ° and while the camshaft 70 is axially displaced in the direction L. From this rotational position, the groove depth of the cam groove 71 decreases, whereby the plunger 11 is pushed back in the direction of its rest position I, until at a point P of the magnetic circuit 62 generated by the permanent magnet unit 60 in the region of the gap S1 leads to an increase in the field line density, so that thereby the armature 12 of the first armature assembly 10 is pulled against the spring force of the spring element 13 to the first pole core 20 and thus again reaches its rest position I or the zero position.
  • FIG. 6 shows the position corresponding to the point P of the armature 12 of the first armature assembly 10, in the edge first contact between this armature 12 and the first pole core 20 and thereby a sufficient field strength for complete movement of the armature 12 is generated in its rest position I.
  • the coil unit 50 is energized with reverse polarity, so that no longer the field lines of the magnetic circuit 62 are neutralized by the field lines of the coil unit 50 generated thereby, but the field lines of the further magnetic circuit 63, as in FIG. 7 is shown.
  • the field lines of the magnetic field 51 generated by the coil unit 50 is now directed so that the magnetic field 63 of the permanent magnet unit 60 is neutralized, whereas its magnetic field 62 undergoes a gain.
  • the holding force generated at the gap S2 is no longer sufficient to hold the armature 32 against the spring force of the preloaded spring element 34 on the second pole core 40, so that the second armature arrangement 30 is moved by the spring element 34 in the direction of adjustment R1 until the second armature arrangement 30 moves Anchor 32 on the groove bottom 5a of the blind hole 5 abuts and at the same time the plunger 31 is moved against the spring element 36 from its rest position I in its parking position II, so that it now engages in the cam groove 72 of the camshaft 70.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
  • Electromagnets (AREA)
EP14156741.2A 2013-03-06 2014-02-26 Dispositif d'actionnement électromagnétique, notamment pour le réglage de l'arbre à cames d'un moteur à combustion interne Not-in-force EP2775485B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL14156741T PL2775485T3 (pl) 2013-03-06 2014-02-26 Elektromagnetyczne urządzenie nastawcze, w szczególności do przestawiania wałka rozrządu silnika spalinowego

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102013102241.3A DE102013102241A1 (de) 2013-03-06 2013-03-06 Elektromagnetische Stellvorrichtung, insbesondere zur Nockenwellenverstellung einer Brennkraftmaschine

Publications (3)

Publication Number Publication Date
EP2775485A2 true EP2775485A2 (fr) 2014-09-10
EP2775485A3 EP2775485A3 (fr) 2015-07-01
EP2775485B1 EP2775485B1 (fr) 2016-10-05

Family

ID=50193251

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14156741.2A Not-in-force EP2775485B1 (fr) 2013-03-06 2014-02-26 Dispositif d'actionnement électromagnétique, notamment pour le réglage de l'arbre à cames d'un moteur à combustion interne

Country Status (7)

Country Link
US (1) US9305728B2 (fr)
EP (1) EP2775485B1 (fr)
BR (1) BR102014004878A2 (fr)
DE (1) DE102013102241A1 (fr)
ES (1) ES2617080T3 (fr)
HU (1) HUE031520T2 (fr)
PL (1) PL2775485T3 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9583249B2 (en) * 2014-10-31 2017-02-28 Husco Automotive Holdings Llc Methods and systems for push pin actuator
DE102015103761A1 (de) 2015-03-13 2016-09-29 Kendrion (Villingen) Gmbh Stellelement zum axialen Verschieben einer entlang einer Nockenwellenachse verschiebbar gelagerten Nockenwelle
DE102015213662A1 (de) * 2015-07-21 2017-01-26 Robert Bosch Gmbh Fahrzeug, Motor, Nockenwellenanordnung und Stellvorrichtung
DE102016116776A1 (de) 2016-09-07 2018-03-08 Kendrion (Villingen) Gmbh Elektromagnetische Stellvorrichtung insbesondere zum Verstellen von Nockenwellen eines Verbrennungsmotors
DE102016116777A1 (de) * 2016-09-07 2018-03-08 Kendrion (Villingen) Gmbh Elektromagnetische Stellvorrichtung insbesondere zum Verstellen von Nockenwellen eines Verbrennungsmotors
DE102017121723B4 (de) 2017-09-19 2021-07-01 Kendrion (Villingen) Gmbh Elektromagnetische Stellvorrichtung insbesondere zum Verstellen von Nockenwellen eines Verbrennungsmotors

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007037232A1 (de) 2007-08-07 2009-02-12 Eto Magnetic Gmbh Vorrichtung zur Nockenwellenverstellung einer Brennkraftmaschine

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US3344377A (en) * 1965-09-09 1967-09-26 Warner W Clements Electromagnetic actuator having plural plunger members
DE3239153A1 (de) * 1982-10-22 1984-04-26 Bosch Gmbh Robert Hubmagnet
US4503411A (en) * 1983-11-23 1985-03-05 Cooper Industries Dual plunger solenoid device
US5903203A (en) * 1997-08-06 1999-05-11 Elenbaas; George H. Electromechanical switch
DE29912431U1 (de) * 1999-07-16 1999-09-23 Dungs Karl Gmbh & Co Magnetische Stellvorrichtung für ein Magnetventil
US7637475B2 (en) * 2005-05-16 2009-12-29 Kurz-Kasch, Inc. Solenoid
DE102006025559A1 (de) * 2006-06-01 2007-12-13 H. Kuhnke Gmbh Elektromagneteinheit
DE102007037333A1 (de) * 2007-08-08 2009-02-26 Daimler Ag Betätigungsvorrichtung
DE102009006061A1 (de) * 2009-01-24 2010-07-29 Daimler Ag Betätigungsvorrichtung
DE202009015466U1 (de) * 2009-02-27 2010-03-18 Schaeffler Kg Elektromagnetische Stellvorrichtung
DE102009015833B4 (de) * 2009-04-01 2011-04-28 Hydac Electronic Gmbh Elektromagnetische Stellvorrichtung
DE102010025766B4 (de) * 2010-07-01 2012-07-12 Thomas Magnete Gmbh Bistabiler Hubmagnet
DE102011009327B4 (de) * 2011-01-18 2012-09-27 Hydac Electronic Gmbh Elektromagnetische Stellvorrichtung
DE102011079189A1 (de) * 2011-07-14 2013-01-17 Schaeffler Technologies AG & Co. KG Schiebenockensystem mit zwei Pin Aktoreinheiten

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DE102007037232A1 (de) 2007-08-07 2009-02-12 Eto Magnetic Gmbh Vorrichtung zur Nockenwellenverstellung einer Brennkraftmaschine

Also Published As

Publication number Publication date
US20140253265A1 (en) 2014-09-11
HUE031520T2 (en) 2017-07-28
EP2775485A3 (fr) 2015-07-01
DE102013102241A1 (de) 2014-09-11
ES2617080T3 (es) 2017-06-15
PL2775485T3 (pl) 2017-07-31
BR102014004878A2 (pt) 2015-10-06
US9305728B2 (en) 2016-04-05
EP2775485B1 (fr) 2016-10-05

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