WO2014146800A1 - Dispositif de réglage électromagnétique - Google Patents

Dispositif de réglage électromagnétique Download PDF

Info

Publication number
WO2014146800A1
WO2014146800A1 PCT/EP2014/050354 EP2014050354W WO2014146800A1 WO 2014146800 A1 WO2014146800 A1 WO 2014146800A1 EP 2014050354 W EP2014050354 W EP 2014050354W WO 2014146800 A1 WO2014146800 A1 WO 2014146800A1
Authority
WO
WIPO (PCT)
Prior art keywords
actuator
force
housing
magnetic
magnetic element
Prior art date
Application number
PCT/EP2014/050354
Other languages
German (de)
English (en)
Inventor
Guenther Hohl
Original Assignee
Robert Bosch 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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2014146800A1 publication Critical patent/WO2014146800A1/fr

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
    • H01F7/122—Guiding or setting position of armatures, e.g. retaining armatures in their end position by permanent magnets
    • 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
    • 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
    • F01L13/0015—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 present invention relates to engine technology in vehicles. More particularly, the present invention relates to an electromagnetic actuator, a camshaft assembly, and an engine for a vehicle, particularly an automobile, and a vehicle.
  • Camshafts are used in engine technology and are part of the valve train there. They are used to control the intake and exhaust valves of a
  • a camshaft is a machine element on which at least one rounded projection, the so-called cam, is arranged.
  • the shaft rotates about its own axis, with the longitudinal movement realized by the cam to open and
  • Camshaft thereby determine the characteristics of a thus controlled motor element.
  • camshafts which provide a change in engine characteristics by a relative displacement of a camshaft, so that depending on the required engine characteristics
  • variable valve control usually uses a suitable electromagnetic actuator, which is used to activate or deactivate a desired or specific camshaft arrangement.
  • Electromagnetic actuators are known, for example, from DE 102 40 774 B4 and EP 1 421 591 B1. The ones described herein
  • an electromagnetic actuator in particular such an electromagnetic actuator which, due to its structural design, has a reduced lifetime degradation due to mechanical, thermal and contamination loads. Accordingly, an electromagnetic actuator, a
  • Camshaft assembly, an engine and a vehicle, in particular an automobile according to the independent claims displayed. Preferred embodiments will be apparent from the dependent claims.
  • the improvement according to the invention is realized by the use of a
  • Permanent magnet in conjunction with a solenoid coil as drive.
  • the permanent magnet is outside the working space of the valve or on the control pin or the actuator opposite side of the electromagnetic actuator and thus on the side facing away from the motor of the housing of the magnetic actuator. This results in at least reduced particle accumulation and a lower
  • the magnetic element is not moved, but is static or immobile in the housing arranged and is therefore not mechanically stressed. As a result, the risk of edge injuries, outbreaks and the like is reduced or completely avoided.
  • Basic requirements for an electromagnetic actuator is doing a
  • control pin or an actuator several millimeters stable
  • the provision of the control pin via the camshaft itself can be done.
  • the control pin or the adjusting element is thus to be held in the retracted position or the first position and an extended position or a second position respectively stable and in particular without external power supply.
  • the inventive electromagnetic actuating device thus has in principle at least two positions, a first position and a second position, of its control element, which is outside the electromagnetic
  • Actuating element further protrude out of the housing, especially in the second position than in the first position.
  • the actuator may then be e.g. in a suitable guide on the camshaft of an engine a lateral
  • Camshaft profiles realize a modified or variable valve control. Depending on the structural design may be sufficient here a few millimeters to centimeters difference in length of the control element between the two positions for the realization of a valve control.
  • the electromagnetic adjusting device is designed such that the two
  • Positions, when taken each, are held without further energy supply, in particular without electrical energy supply.
  • a suitable force acting from the outside on the actuator for example, this pulls or pushes in the axial direction, the actuator can also be transferred from outside from one position to the other position.
  • the electromagnetic actuator according to the present invention comprises, on the one hand, a magnetic element capable of holding the actuator in one of the first and second positions while providing a spring element which moves the actuator from the position held by the magnetic element toward the other position want to push or transfer.
  • the spring force or the magnetic force of the magnetic element in each case the position in which the adjusting element is held by spring element or magnetic element, greater than the adjusting force of the respective other element.
  • Magnetic element the force applied by the spring element of the force of the attractive effect of the magnetic element, e.g. due to the increased distance of actuator and magnetic element and the thus reduced effect of the magnetic force on the actuator.
  • Position in which the actuator is held by the magnetic element, to the position in which the actuator is held by the spring element can be achieved by an additional force acting on the actuator, at least temporarily or temporarily, so that the Spring force supporting additional force acts on the actuating element, wherein the sum of the additionally acting force and the force of the spring element exceed the attractive force of the magnetic element. Due to the now higher sum of the two forces relative to the magnetic force, the actuator moves from the position in which it is held by the magnetic element to the position in which it is held by the spring element. After elimination of the additional external force outweighs in the position remote from the magnetic element still the force of the spring element against the attractive force of the magnetic element, so that the actuator is held by the spring force against the (lower) magnetic force in this position.
  • Such an additional or external force can on the one hand be effected by a pulling or pushing force acting on the adjusting element (for example from the outside) or by a further element, for example a coil element in FIG Inside of the housing, can be provided, which applies to the spring force adding (second) magnetic force on the actuator, the sum of the spring force and the additional second magnetic force through the coil element exceeds the (first) magnetic force of the magnetic element and thus the actuator of the first Position in the second position is able to bring.
  • a pulling or pushing force acting on the adjusting element for example from the outside
  • a further element for example a coil element in FIG Inside of the housing
  • the additional (magnetic) force can be omitted, in the case of a coil element whose current can be suspended again.
  • a return of the actuating element from the second position to the first position can be achieved by simply pushing or displacing the actuating element in the direction of the housing of the electromagnetic
  • Actuator e.g. by an externally acting force in the axial direction.
  • the actuator is pressed far enough into the housing of the electromagnetic actuator, then in turn outweighs the magnetic force of the magnetic element, and the actuator is held by the magnetic element alone in the first position.
  • Figure 1 shows an exemplary embodiment of an electromagnetic
  • Figure 2 shows an exemplary embodiment of an electromagnetic
  • the electromagnetic actuator 20 has an actuator 8 and a control pin, which can be acted upon by a spring element 5 with a force F F , which is suitable to press the actuator 8 to the outside of the housing 2 of the electromagnetic actuator 20 and this thus of View outside extend .. This allows the actuator 8 in the
  • Control element 8 is fixedly connected to an armature disk 4, which is arranged such that a magnetic element 9, for example a permanent magnet, a
  • Magnetic force F m can apply to the armature disk 4 and thus to the actuator 8 connected thereto.
  • the adjusting element 8 is pulled in the direction of the magnetic element 9 in the currentless position of the coil element 1, which, for example, using a closure cover 10 of the
  • Anchor plate 4 is separated.
  • the force F m of the magnetic element 9 predominates in this position, the first position, and is thus in particular greater than the force F F of the spring element 5, which may apply this in the first position.
  • the adjusting element 8 is retracted stable and held on the first or rear position.
  • the magnetic flux runs as an example over the housing shell 2, a slotted magnet sleeve 3 and armature 4, which closes the air gap to an inner pole 7 and a fixedly connected disc 6.
  • Electromagnet is applied a positive force to the spring force F F adding additional force, causing the armature 4 releases from the rear or first position. After a certain partial stroke, the spring force F F of the spring element 5 alone already outweighs the force F m of the magnetic element 9 due to the now resulting larger air gap between the magnetic element 9 and armature disk 4. Already now could / coil element 1 of the electromagnet is turned off
  • Terminals or Spulenuttonl für für Institute 11 for the coil element 1 can be passed through a slot in the magnet sleeve 4 and a recess in the closure pot 10 to the outside, for example in the direction of the magnetic element 9 and thus to the motor side facing away.
  • Magnetic element 9 may in particular be fixedly connected, for example glued, to the closure lid 10, whereby it is protected against mechanical damage and soiling, in particular by further use of a cover 12, for example by a potting compound.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

Dispositif de réglage électromagnétique (20) comportant un boîtier (2), un élément magnétique (9), un élément ressort (5), et un élément de réglage (8), l'élément de réglage (8) étant conçu pour adopter une première position dans laquelle il fait saillie par rapport au boîtier (2) de l'ordre d'une première longueur, et au moins une seconde position dans laquelle il fait saillie par rapport au boîtier (2) de l'ordre d'une seconde longueur différente de la première longueur. L'élément magnétique (9) est conçu pour maintenir l'élément de réglage (8) dans la première ou la seconde position, l'élément ressort (5) étant conçu pour maintenir l'élément de réglage (8) dans l'autre position respective. Le dispositif de réglage électromagnétique est caractérisé en ce que l'élément magnétique (9) est disposé dans le boîtier (2) de telle manière qu'il est immobile par rapport au boîtier (2).
PCT/EP2014/050354 2013-03-19 2014-01-10 Dispositif de réglage électromagnétique WO2014146800A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201310204764 DE102013204764A1 (de) 2013-03-19 2013-03-19 Elektromagnetische Stellvorrichtung
DE102013204764.9 2013-03-19

Publications (1)

Publication Number Publication Date
WO2014146800A1 true WO2014146800A1 (fr) 2014-09-25

Family

ID=49955365

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2014/050354 WO2014146800A1 (fr) 2013-03-19 2014-01-10 Dispositif de réglage électromagnétique

Country Status (2)

Country Link
DE (1) DE102013204764A1 (fr)
WO (1) WO2014146800A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021225516A1 (fr) * 2020-05-04 2021-11-11 Soon Seng Sin Actionneur linéaire à aimant mobile à électroaimant à énergie motrice élevée et à action rapide

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015213662A1 (de) 2015-07-21 2017-01-26 Robert Bosch Gmbh Fahrzeug, Motor, Nockenwellenanordnung und Stellvorrichtung
CN112570762B (zh) * 2020-12-01 2022-02-15 重庆庆铃模具有限公司 一种自清洁型板簧卡座生产加工用模具

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19722013A1 (de) * 1997-05-27 1998-12-03 Steingroever Magnet Physik Magneto-mechanisches Kraftsystem
EP1837516A1 (fr) * 2006-03-23 2007-09-26 Delphi Technologies, Inc. Actionneur pour soupape à combustible
WO2010112111A1 (fr) * 2009-04-01 2010-10-07 Hydac Electronic Gmbh Dispositif de réglage électromagnétique
WO2012079572A2 (fr) * 2010-10-16 2012-06-21 Msm Krystall Gbr Actionneur linéaire électromagnétique

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20114466U1 (de) 2001-09-01 2002-01-03 Eto Magnetic Kg Elektromagnetische Stellvorrichtung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19722013A1 (de) * 1997-05-27 1998-12-03 Steingroever Magnet Physik Magneto-mechanisches Kraftsystem
EP1837516A1 (fr) * 2006-03-23 2007-09-26 Delphi Technologies, Inc. Actionneur pour soupape à combustible
WO2010112111A1 (fr) * 2009-04-01 2010-10-07 Hydac Electronic Gmbh Dispositif de réglage électromagnétique
WO2012079572A2 (fr) * 2010-10-16 2012-06-21 Msm Krystall Gbr Actionneur linéaire électromagnétique

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021225516A1 (fr) * 2020-05-04 2021-11-11 Soon Seng Sin Actionneur linéaire à aimant mobile à électroaimant à énergie motrice élevée et à action rapide

Also Published As

Publication number Publication date
DE102013204764A1 (de) 2014-09-25

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