WO2014019736A1 - Actionneur magnétique d'un système de cames coulissantes - Google Patents

Actionneur magnétique d'un système de cames coulissantes Download PDF

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Publication number
WO2014019736A1
WO2014019736A1 PCT/EP2013/061031 EP2013061031W WO2014019736A1 WO 2014019736 A1 WO2014019736 A1 WO 2014019736A1 EP 2013061031 W EP2013061031 W EP 2013061031W WO 2014019736 A1 WO2014019736 A1 WO 2014019736A1
Authority
WO
WIPO (PCT)
Prior art keywords
armature
pole
magnetic actuator
spring
plunger
Prior art date
Application number
PCT/EP2013/061031
Other languages
German (de)
English (en)
Inventor
David Vopel
Original Assignee
Schaeffler Technologies AG & Co. KG
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 Schaeffler Technologies AG & Co. KG filed Critical Schaeffler Technologies AG & Co. KG
Publication of WO2014019736A1 publication Critical patent/WO2014019736A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • 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
    • F01L13/0042—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 being profiled in axial and radial direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F01L13/0036—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
    • F01L2013/0052—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction with cams provided on an axially slidable sleeve

Definitions

  • the invention relates to a magnetic actuator of a sliding cam system which is designed as translationally acting, electrically actuable Stellaktor with an armature which is connected to a plunger, wherein the plunger can be brought in an extension of him in operative relationship with a backdrop on a camshaft to a To cause camshaft adjustment, and with a pole member and with a Jochbauteil, both of which are in engagement with the armature, with an in-housing coil through which current is conductible to influence a magnetic force of a permanent magnet also contained, the plunger in a off-screen, retracted, ie first position and immovable with respect to the spool and / or housing, as well as with a spring which provides a force to move the ram into an extended, hooked-into-gate, i.
  • the anchor is the movable actuator and could also be referred to as a runner. It is between the pole member and the Jochbauteil back and forth.
  • the anchor usually runs in Jochbauteil, which can also be referred to as a yoke, wherein the end stop is formed by the housing of the plunger.
  • the magnetic actuator could also be referred to as Magnetaktuator.
  • Valve drives with cam switches for gas exchange valves of a four-stroke internal combustion engine are already known from the prior art.
  • DE 10 2004 008 670 A1 discloses a valve drive with cam Circuit having the following features or components: A splined shaft with external axial teeth and a cam piece per cylinder with internal teeth, through which the cam piece is axially displaceable and rotationally fixed to the part shaft;
  • the cam piece has two adjacent cams with the same base circle diameter and uneven stroke per gas exchange valve; at both ends of the cam piece cylindrical end pieces are provided, in each of whose circumference a mirror-symmetrical sliding groove is radially incorporated; in each displacement groove is a radially retractable, housing-fixed actuator pin, wherein the cam piece is axially back and forth pushed by the interaction of actuator pins and sliding grooves with the engine running, the sliding grooves have an acceleration edge with an impact ramp whose constant, low slope a correspondingly constant , low axial initial speeds of the cam piece and a small impact force of the actuator pin
  • Sliding cam actuators for example electromagnetic actuators from DE 10 2009 015 833 A1 are also known.
  • a device disclosed for use as a cam phaser for piston engines, with an at least partially the shape of a circular cylindrical pot having housing, in particular made of soft magnetic metal, fixed to the bottom of a pot in the housing permanent magnet means, with a current coil means and with a plunger-like, in Housing axially between retracted first and extended second switching position movable actuator with a hollow body thereon to hold the actuator by attracting magnetic force effect of the permanent magnet device against acting between the actuator and a housing-side point of application spring force of a spring assembly in the first switching position, from which the actuator at energized coil means and thereby effected degradation of the magnetic force action under the influence of the spring force moves to the second switching position, wherein the spring arrangement a Entkoppeleinr Having means, by means of which in the second switching position, the action of the spring force on the housing-side point of attack can be prevented.
  • a solution that makes better use of space and uses fewer components is provided. It is created by a bistable actuator concept with magnetic force holder in a first end position and a spring force holder in a second end position. The transfer from the first position to the second position is effected by a compensation force which is applied electromagnetically. This compensation force counteracts the permanent magnetic force effect. A movement opposite to the extension of the plunger can be effected by an external force.
  • the compensation of production-related scattering takes place via an adjustment process, which becomes possible in the first place through the conception according to the invention.
  • the bias of the spring can be varied, thereby defining the triggering threshold of the system.
  • the pole component is at least partially located radially inside the armature when the tappet is in the first position. It is expedient if the working gap extending in the axial direction, is formed in the manner of a ring. The assembly of the items is thus much easier.
  • the pole component is designed as a pole disk, preferably as a stepped solid disk.
  • the pole disk is at least partially radially located within the armature.
  • An advantageous embodiment is also characterized in that a sealing sleeve seals the pole member and the armature to the outside, preferably using a lid and a stop member.
  • a sealing sleeve may be formed so as to separate the inner area from the outer area and seal the system.
  • stop member is formed as a radially arranged within a housing stage cylinder, between which the sealing sleeve is located.
  • stop member is positively, positively and / or materially connected to the front and / or inside of the sealing sleeve.
  • a particularly precise functioning has been found when a preferably ring-like anti-stick disc is present in the working gap.
  • an anti-adhesive disc of non-magnetic material such as plastic
  • the anti-stick disc covers one end of the anchor.
  • a magnetic circuit is constructed which comprises the components armature, yoke component, housing, cover, permanent magnet and pole disk, that is, the magnetic circuit and the associated magnetic flux pass through these components.
  • a spring plate is located in the armature, which is arranged between the plunger and / or the armature and the spring. Then, the Vorstelltension the spring can be set and determined on the position of the spring plate. About a hollow pin, an adjustment tool for moving the spring plate can be performed. It is useful if the spring plate has a U-shaped cross section in the manner of a sleeve with a closed bottom and / or the spring plate is non-positively connected to the armature. It is also advantageous if the spring plate has a larger outer diameter than the inner diameter of the armature.
  • both a small dispersion of the triggering threshold and thus the switching time can be compensated, as well as the committee be reduced.
  • the scattering of permanent magnet and spring can be compensated for and the adjustment process can be profitably optimized.
  • a stop is present in the housing, so that the armature is held in the extended position non-positively by the spring. It is advantageous if the sealing sleeve receives the spring in the armature and is displaceable, wherein more preferably a hollow pin for supplying a tool is present.
  • FIG. 1 is a partial sectional view through a magnetic actuator according to the invention for a sliding cam system in a first position
  • FIG. 2 shows the magnetic actuator for a sliding cam system from FIG. 1 in a second position in a manner of representation corresponding to FIG. 1, and FIG.
  • Fig. 3 shows the magnetic actuator of Figs. 1 and 2 in the first position, as shown in Fig. 1.
  • FIG. 1 shows a first embodiment of a magnetic actuator 1 according to the invention of a sliding cam system.
  • the magnetic actuator 1 is designed as a translatory acting electromagnetically actuable Stellaktor.
  • the magnetic actuator 1 acts on a system similar to the sliding cam system of DE 10 2004 008 670 A1.
  • the features disclosed in DE 10 2004 008 670 A1 in this regard should be considered integrated here.
  • the magnetic actuator 1 also has an armature 2, which could also be referred to as an armature component.
  • the armature 2 is connected to a plunger 3, preferably via a frictional connection and / or a material connection.
  • the plunger 3 can be spent in an outward movement in operative relationship with a non-illustrated backdrop of a camshaft, not shown.
  • the magnetic actuator 1 also has a pole component 4 and a yoke component 5.
  • the pole component 4 could also be referred to as a pole and the yoke component 5 as a yoke.
  • the pole member 4 is designed here as a hole-free pole disc, just as the yoke member 5 is formed as a ring-like yoke disc.
  • the armature 2 is located radially inside the yoke member 5 and axially spaced from the pole member 4. In the region of this spacing, a working gap 6 is formed, in which an annular anti-stick disc 7 is located.
  • a permanent magnet 8 is present, which is located axially on the armature 2 opposite side of the pole plate 4 and is fixed to the housing.
  • At least one electrically actuated coil 9 in a housing 1 1 is present, which acts in the manner of an electromagnet, when current passes through. The then caused electromagnetic force, counteracts the magnetic force of the permanent magnet 8, so that the force caused by a spring 10 force the plunger 3 in a second position, as shown in Fig. 2, can be spent.
  • the coil 9 and in particular the yoke component 5, the armature 2, the spring 10, the pole member 4 and the permanent magnet 8 are located within the housing 1 1.
  • the housing 1 1 of the magnetic actuator 1 may in turn also have a lid, which then becomes part of the magnetic circuit when the plunger 3 is located in the first position.
  • the spring 7 is in contact with the pole member 4 and in at least indirect contact with the plunger 3 on the one hand and the armature 2 on the other hand.
  • the frictional connection in this case runs through a spring teller 12 which, in the manner of a pot or a sleeve, is designed with a U-shaped cross section when viewed in longitudinal section. It may be that the coil 9 is surrounded by an insulating member 13.
  • the frictional connection, caused by the permanent magnet 8, so the magnetic circuit more precisely, is symbolized by the arrow 14.
  • the magnetic holding force is greater than the spring force of the spring 10. If the magnetic holding force, ie the magnetic force of the permanent magnet 8 is weakened, the spring force is higher and leads to a triggering, ie extension of the plunger 3 in a second position , as shown in Fig. 2. In This position only affects the spring position fixing on the plunger 3 a.
  • a sealing sleeve 15 surrounds both the pole member 4, as well as the armature 2 radially, wherein a lid 16, as clearly visible in Fig. 3, is welded to the sealing sleeve 15.
  • FIG. 3 An especially well in Fig. 3 to be recognized stop member 17, forms a stop for the armature 2.
  • the stop is provided with the reference numeral 18.
  • the plunger 3 is located in its second position, that is, the extended position, and the armature 2 by more axially than the width of the working gap 6 of the pole member 4. In this position, the plunger 3 is held due to the spring force of the spring 10. No magnetic force is needed for this.

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

Abstract

L'invention concerne un actionneur magnétique (1) d'un système de cames coulissantes réalisé sous la forme d'un actionneur de réglage actionnable électriquement agissant en translation, comprenant : une armature (2) reliée à un plongeur (3), lequel plongeur (3) lorsqu'il est sorti peut être amené à coopérer avec une coulisse sur un arbre à cames afin de provoquer un déplacement dudit arbre à cames ; un composant polaire (4) et un composant de culasse (5) coopérant l'un et l'autre avec l'armature (2) ; une bobine (9), disposée dans un boîtier (11), dans laquelle on peut faire passer un courant afin d'agir sur une force magnétique d'un aimant permanent (8), également contenu, qui maintient le plongeur (3) dans une position rentrée éloignée de la coulisse, c'est-à-dire une première position, et qui est immobile par rapport à la bobine (9) et/ou au boîtier (11) ; ainsi qu'un ressort (10) qui exerce une force servant à déplacer le plongeur (3) dans une position sortie engagée dans la coulisse, c'est-à-dire une deuxième position, le ressort (10) coopérant dans les deux positions du plongeur (3) à la fois avec le composant polaire (4) et avec l'armature (2) afin de transmettre la force.
PCT/EP2013/061031 2012-08-02 2013-05-29 Actionneur magnétique d'un système de cames coulissantes WO2014019736A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012213660.6 2012-08-02
DE201210213660 DE102012213660A1 (de) 2012-08-02 2012-08-02 Magnetaktor eines Schiebenockensystems

Publications (1)

Publication Number Publication Date
WO2014019736A1 true WO2014019736A1 (fr) 2014-02-06

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PCT/EP2013/061031 WO2014019736A1 (fr) 2012-08-02 2013-05-29 Actionneur magnétique d'un système de cames coulissantes

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DE (1) DE102012213660A1 (fr)
WO (1) WO2014019736A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016116776A1 (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
DE102017121947A1 (de) 2017-09-21 2019-03-21 Kendrion (Villingen) Gmbh Stellvorrichtung mit einem abgedichteten Führungszylinder

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2412160A1 (fr) * 1977-12-19 1979-07-13 Alsthom Cgee Dispositif electromecanique de percussion
US4660012A (en) * 1984-11-22 1987-04-21 Merlin Gerin Polarized electromagnetic relay with magnetic latching for an electric circuit breaker trip release
DE102004008670A1 (de) 2004-02-21 2005-09-08 Ina-Schaeffler Kg Ventiltrieb mit Nockenumschaltung für die Gaswechselventile eines 4-Takt-Verbrennungsmotors
DE102006051809A1 (de) * 2006-11-03 2008-05-08 Schaeffler Kg Stellvorrichtung
DE102007052253A1 (de) * 2007-11-02 2009-05-07 Daimler Ag Ventiltriebvorrichtung
DE102009008422A1 (de) * 2009-02-11 2010-08-12 Daimler Ag Ventiltriebumschaltvorrichtung
WO2010112111A1 (fr) * 2009-04-01 2010-10-07 Hydac Electronic Gmbh Dispositif de réglage électromagnétique
EP2306472A2 (fr) * 2009-10-01 2011-04-06 Pierburg GmbH Actionneur pour un moteur à combustion interne
WO2011042273A1 (fr) * 2009-10-09 2011-04-14 Pierbrug Gmbh Actionneur pour moteur à combustion interne

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2656953B1 (fr) * 1990-01-05 1996-08-30 Merlin Gerin Relais electromagnetique polarise par un aimant permanent.
DE9419010U1 (de) * 1994-11-26 1996-03-28 Kloeckner Moeller Gmbh Elektromagnetischer Schnellauslöser für elektrische Schaltgeräte
DE29803511U1 (de) * 1998-02-28 1998-05-07 Binder Magnete Ges M B H Elektromagnetisch arbeitende Stelleinrichtung

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2412160A1 (fr) * 1977-12-19 1979-07-13 Alsthom Cgee Dispositif electromecanique de percussion
US4660012A (en) * 1984-11-22 1987-04-21 Merlin Gerin Polarized electromagnetic relay with magnetic latching for an electric circuit breaker trip release
DE102004008670A1 (de) 2004-02-21 2005-09-08 Ina-Schaeffler Kg Ventiltrieb mit Nockenumschaltung für die Gaswechselventile eines 4-Takt-Verbrennungsmotors
DE102006051809A1 (de) * 2006-11-03 2008-05-08 Schaeffler Kg Stellvorrichtung
DE102007052253A1 (de) * 2007-11-02 2009-05-07 Daimler Ag Ventiltriebvorrichtung
DE102009008422A1 (de) * 2009-02-11 2010-08-12 Daimler Ag Ventiltriebumschaltvorrichtung
WO2010112111A1 (fr) * 2009-04-01 2010-10-07 Hydac Electronic Gmbh Dispositif de réglage électromagnétique
DE102009015833A1 (de) 2009-04-01 2010-10-14 Hydac Electronic Gmbh Elektromagnetische Stellvorrichtung
EP2306472A2 (fr) * 2009-10-01 2011-04-06 Pierburg GmbH Actionneur pour un moteur à combustion interne
DE102009043722A1 (de) 2009-10-01 2011-04-07 Pierburg Gmbh Aktuator für eine Verbrennungskraftmaschine
WO2011042273A1 (fr) * 2009-10-09 2011-04-14 Pierbrug Gmbh Actionneur pour moteur à combustion interne
DE102009049009A1 (de) 2009-10-09 2011-04-21 Pierburg Gmbh Aktuator für eine Verbrennungskraftmaschine

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