EP0998623B1 - Dispositif d'ajustement electromagnetique - Google Patents

Dispositif d'ajustement electromagnetique Download PDF

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Publication number
EP0998623B1
EP0998623B1 EP98951298A EP98951298A EP0998623B1 EP 0998623 B1 EP0998623 B1 EP 0998623B1 EP 98951298 A EP98951298 A EP 98951298A EP 98951298 A EP98951298 A EP 98951298A EP 0998623 B1 EP0998623 B1 EP 0998623B1
Authority
EP
European Patent Office
Prior art keywords
winding
holding
electromagnetic control
windings
control instrument
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.)
Expired - Lifetime
Application number
EP98951298A
Other languages
German (de)
English (en)
Other versions
EP0998623A1 (fr
Inventor
Karl Heinz Leiber
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.)
LSP Innovative Automotive Systems GmbH
Original Assignee
LSP Innovative Automotive Systems 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
Priority claimed from DE19731381A external-priority patent/DE19731381A1/de
Priority claimed from DE19741570A external-priority patent/DE19741570A1/de
Application filed by LSP Innovative Automotive Systems GmbH filed Critical LSP Innovative Automotive Systems GmbH
Publication of EP0998623A1 publication Critical patent/EP0998623A1/fr
Application granted granted Critical
Publication of EP0998623B1 publication Critical patent/EP0998623B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
    • H01F7/1805—Circuit arrangements for holding the operation of electromagnets or for holding the armature in attracted position with reduced energising current
    • H01F7/1827—Circuit arrangements for holding the operation of electromagnets or for holding the armature in attracted position with reduced energising current by changing number of serially-connected turns or windings
    • 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
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
    • 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
    • H01F7/14—Pivoting armatures
    • 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
    • H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
    • H01F7/1805—Circuit arrangements for holding the operation of electromagnets or for holding the armature in attracted position with reduced energising current
    • H01F7/1833—Circuit arrangements for holding the operation of electromagnets or for holding the armature in attracted position with reduced energising current by changing number of parallel-connected turns or windings
    • 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
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
    • F01L9/21—Valve-gear or valve arrangements actuated non-mechanically by electric means actuated by solenoids
    • F01L2009/2105—Valve-gear or valve arrangements actuated non-mechanically by electric means actuated by solenoids comprising two or more coils
    • F01L2009/2109—The armature being articulated perpendicularly to the coils axes

Definitions

  • the invention relates to an electromagnetic actuating device with the features the preamble of claim 1.
  • Such an actuator is such. B. from DE 3546 513 C2. There the winding of each electromagnet is first until it reaches a maximum current to voltage. Then the power is turned off. about a freewheel circuit now drops the current. When a lower value is reached of the current, voltage is again applied to the winding until an upper one Current value is reached. Now it is switched off again, etc., i.e. the winding around clocked a current value that is smaller than the maximum current value, whereby the power and the magnetic force to the value necessary for holding can be reduced.
  • EP 0 693 756 A1 describes a device for controlling a known electromagnetic consumer, in which the consumer two Has windings.
  • the windings have different numbers of turns.
  • the winding with the larger number of turns is called the actuation winding and the other winding is used as a holding winding.
  • the invention is based on the object, the control of at least one of the To make electromagnets more flexible and more reliable.
  • the electromagnetic actuator for valve adjustment must have two perform different functions. Firstly, in the closing or Open position of the valve of the armature positioned with the smallest possible air gap become. This should result in as little power loss as possible, the efficiency ' of the magnet must be large, i.e. iron and air gap losses must be small. The average currents for the excitation winding should be as small as possible. When the armature has reached its end position, the time constant of the Excitation winding be great. Shortly before reaching the end position, however, it must be as small as possible so that deviations from the target position as quickly as possible can be corrected.
  • the mechanical loss energy (e.g. due to friction), which means a stroke loss represent, be balanced.
  • the magnet has one different efficiency, low for large and high for small Air gaps.
  • Another criterion is the failure of the coil of the closing magnet, the one Total failure of the corresponding cylinder even with 4 valves means and Interference caused by recoil in the intake pipe.
  • a winding as the main winding used to carry out the lifting movement and the second Winding to use as a holding winding with a lower current, which is a reduction in performance brings with it.
  • the two windings can be mutual be used as redundancy if the holding winding in the event of failure the main winding is operated with high voltage.
  • the main winding must let the current rise quickly, so not one have a high number of turns. That is why it is necessary to generate the ampere windings high performance necessary.
  • the holding winding Time to get the excitement you need to stop.
  • the holding winding may have significantly more turns, and therefore comes with significantly lower current.
  • the reduction in holding power is significant, it will reduced to about 15 to 20% compared to the use of a winding.
  • lowering electricity also means a significant reduction in heat.
  • Another possibility in the use of at least two coils per Magnet consists of dividing the yoke and here two windings on the two Use yoke parts or two coils per yoke. This has the effect that Distribution of excitation (ampere winding number) per yoke (half area) at same number of turns per half of the yoke and double resistance Time constant is 1/4. If this division has been made over both halves of the yoke with parallel connection the effective time constant 1/8 and also the redundancy with Failure of a coil guaranteed.
  • the solenoids are controlled individually, in parallel or in series and possibly with different voltage levels. This results in for the product determining the magnetic force current I times the number of turns n (x n) different electrical powers and also time constants. If one fails The coil or output stage must then pass through the required value of the product (x n) higher voltage and thus power are generated. Here is the one necessary power consumption higher, but the engine can continue to operate and will be repaired at the next opportunity.
  • FIG. 1 shows a possible construction of an actuating device according to the invention shown.
  • Two magnetic circuits 3 and 4 are shown, on which windings 11 and 9 are applied.
  • An anchor 7 is mounted by means of a torsion bar 8, which is around the axis 8a can be rotated.
  • the magnetic poles 3a and 4a are corresponding this rotary movement is formed obliquely.
  • the torsion bar 8 provides the anchor 7 without Control one of the windings 11 or 9 in the intermediate position shown.
  • the armature 7 is in an end position brought near the poles 3a or 4a.
  • the anchor 7 is by means of a Cage 1 connected to the torsion bar 8.
  • Holding windings 10 are additionally connected on the magnetic circuits 3 and 4 and 12 applied, which in principle serve the anchor 7 in the To record end positions. These windings 10 and 12 face the Windings 9 and 11 have a higher number of turns and thus a larger number Time constant. However, the additional windings 10 and 12 can also together with the windings 9 and 11 according to those mentioned above Possible uses.
  • These windings 9-12 are made by one controlled ⁇ processor, which in the drawing of the simpler
  • the main windings 9 are divided into two parts 13a and 13b and 11 are from the ⁇ processor part 13a via amplifiers 14a and 14b driven, which is connected to a voltage source 15 of z. B. 42 volts.
  • the holding windings 10 and 12 are via amplifiers 19a and 19b, or 20a and 20b driven.
  • the amplifiers 19a and 20a are connected to one Voltage source 21 of z. B. 12V on.
  • the amplifiers 19b and 20b are connected to the Voltage source 15. All amplifiers are passed through or by the ⁇ processor part 13b off. Both windings 10 and 12 are shunts 22 and 23, respectively downstream. Return lines 24 and 25 lead to the ⁇ processor part 13b back.
  • a converter 26 is connected to the voltage source 15, which converts the voltage the voltage source 15, which is applied to the amplifiers 19b and 20b.
  • FIGS. 3 to 6 Alternative for control are shown explained. These figures show current profiles on a main winding z. B. 9 and the associated holding winding z. B. 10.
  • Fig. 3 shows the drive voltage below.
  • a pulse of the voltage source 15 with the voltage level U 2 is given to the amplifiers 14 a and 19 b. This pulse generates the current profile i Hs in the main coil 14a and the profile i HaS in the holding coil 19a until time t 1 .
  • pulses with the amplitude U 1 of the voltage source 21 are applied to the holding coil 19 a above the amplifier 19 a, which generate the clocked current profile in the holding coil from t 1 .
  • This can be followed after t 2 by changing the control pulses, a clocking by an average smaller current value.
  • the line 24 can be used for clocking, which signals the upper and lower value of the winding current to the ⁇ -processor 13b and thus switches the amplifier 19a on and off.
  • the holding winding 10 with its current i HaS and the main winding 9 with its current i HS from t 1 first effect the holding function together. From t 2 , the holding winding 19a takes over this function alone, and its current is clocked.
  • the shunt 22 and the line 24 can be included in the timing;
  • the line 16 for the main coil or a training 17/18 corresponding to the main coil 11 can be used for clocking.
  • the power stage 14a is a modern power stage with a virtual shunt. This provides a signal when current is flowing.
  • both coils are driven, whereby one drives the holding coil with an increased voltage.
  • the exemplary embodiment in FIG. 7 again shows a microprocessor 33 of the five Output stages 34a, 34b, 34c, 39 and 40 driven.
  • the power amplifiers are power amplifiers with integrated shunts.
  • the output stage 34c is assigned to a main winding 31.
  • the Power stages 39 and 40 are the two holding windings 30 and 32 of the two magnets assigned.
  • the second main winding is that for the magnet that closes the valve in two partial windings 29a and 29b divided, which are also controlled via separate output stages 34a and 34b. As a result, sufficient excitation of the magnet is generated more quickly.
  • the Splitting is also possible with the other main winding. It's like in Fig.2 Converter 36 provided. As in the case of Fig.2, here too Winding failure the windings are replaced. in Fig. 7 is also one Driving the main windings 29a, 29b, and 29c with the high Output voltage of the converter possible.
  • Fig. 8 two windings 61 and 62 for an electromagnet are shown, the controlled by a microprocessor 63 in various ways can.
  • the winding 61 can be controlled by means of the output stages 64 and 66
  • Microprocessor 63 can be controlled separately with 42V.
  • over the power amplifiers 65 and 66 are also made 12V.
  • the winding 62 by means of a microprocessor 63 controlled output stage 67 with 42V can be controlled.
  • the output stages 65 and 68 control the Series connection of the two windings 61 and 62 possible with 12V.
  • About the Lines 69 and 70 at the end of the shunts can cause the microprocessor 63 to fail recognize one of the windings 61 or 62 and an output stage and the Take advantage of existing redundancy by using the appropriate circuit.
  • the coil 61 can be connected simultaneously, that is in parallel 12V and coil 62 can be operated with 42V. This results in electrical power consumption, which are different by a factor of 50, or Performance differences that differ by a factor of 10 for the same (l x n) are. The time constants move in roughly the same ratio as that Services.
  • both coils are designed differently in the number of turns, for. B. winding 62 with a higher number of turns to achieve small power for holding, so must a further voltage source 71 with a correspondingly higher voltage can be provided so that if the coil 61 fails, the current rise in 62 can happen quickly enough.
  • FIG. 9 shows an electromagnet in which the two magnet yokes 80 and 81 are divided.
  • Each of the partial yokes 80a and 80b, or 81a and 81b carries one here Partial winding 82a to 82d. All four windings together form the winding for an electromagnet, where there are several options for connection result.
  • the parallel connection shown is preferably used.
  • the Excitation per half of the yoke is divided in both coils, so that, for. B. both together have the number of turns of an undivided yoke, but that have double resistance. in total is the ampere winding number both coils equal to a single coil per undivided yoke. This results in the considerable reduction in the time constant mentioned at the beginning.

Claims (7)

  1. Dispositif de réglage électromagnétique équipé de deux électro-aimants, et d'une armature pouvant être déplacée en va-et-vient entre deux surfaces polaires des électro-aimants par une force électromagnétique, qui sans commande de l'enroulement d'un électro-aimant est maintenue dans une position intermédiaire par deux forces de ressort de sens opposés et après atteinte d'une position terminale est maintenue au moins à proximité des faces polaires de l'électro-aimant correspondant par une force magnétique réduite, le mouvement de l'armature servant à la manoeuvre d'une soupape d'un moteur à combustion interne, caractérisé en ce qu'au moins l'enroulement de l'électro-aimant provoquant la fermeture de la soupape est divisé en deux enroulements partiels, en ce qu'un enroulement partiel (enroulement principal) est utilisé en vue du mouvement de levée et en ce que l'autre enroulement partiel, (enroulement de retenue), sert à la fixation de l'armature dans la position terminale, l'enroulement de retenue présentant un nombre de spires important en comparaison de l'enroulement principal, et en ce qu'un montage de l'enroulement de retenue est prévu, de telle sorte qu'il est alimenté, lors du démarrage du système depuis la position de repos et/ou dans le cas d'une panne de l'enroulement principal associé, par une tension de fonctionnement accrue.
  2. Dispositif de réglage électromagnétique selon la revendication 1, caractérisé en ce que l'enroulement principal est réalisé en tant qu'enroulement d'excitation rapide à faible constante de temps.
  3. Dispositif de réglage électromagnétique selon une des revendications précédentes, caractérisé en ce que les deux enroulements sont commandés lors du déplacement de l'armature hors de la position intermédiaire avec une tension de fonctionnement accrue.
  4. Dispositif de réglage électromagnétique selon une des revendications précédentes, caractérisé par un montage de la bobine principale de telle sorte que lors d'une panne de l'enroulement de retenue associé, elle est alimentée par une tension de commande de manière à assurer l'action de la bobine de retenue.
  5. Dispositif de réglage électromagnétique selon la revendication 4, caractérisé en ce que le courant de la bobine principale dans la fonction de retenue est pulsé.
  6. Dispositif de réglage électromagnétique selon une des revendications précédentes, caractérisé en ce que le courant de la bobine de retenue est pulsé.
  7. Dispositif de réglage électromagnétique selon la revendication 5 ou 6, caractérisé en ce que la pulsation s'effectue temporellement en succession avec une valeur moyenne différente.
EP98951298A 1997-07-22 1998-07-22 Dispositif d'ajustement electromagnetique Expired - Lifetime EP0998623B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19731381A DE19731381A1 (de) 1997-07-22 1997-07-22 Elektromagnetische Stelleinrichtung
DE19731381 1997-07-22
DE19741570A DE19741570A1 (de) 1997-09-20 1997-09-20 Elektromagnetische Stelleinrichtung
DE19741570 1997-09-20
PCT/EP1998/004515 WO1999006677A1 (fr) 1997-07-22 1998-07-22 Dispositif d'ajustement electromagnetique

Publications (2)

Publication Number Publication Date
EP0998623A1 EP0998623A1 (fr) 2000-05-10
EP0998623B1 true EP0998623B1 (fr) 2002-12-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP98951298A Expired - Lifetime EP0998623B1 (fr) 1997-07-22 1998-07-22 Dispositif d'ajustement electromagnetique

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EP (1) EP0998623B1 (fr)
DE (1) DE59806749D1 (fr)
WO (1) WO1999006677A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6516758B1 (en) 1998-11-16 2003-02-11 Heinz Leiber Electromagnetic drive
DE19948489A1 (de) * 1999-10-07 2001-04-12 Heinz Leiber Elektromagnetische Stelleinrichtung
FR2803626B1 (fr) 2000-01-10 2002-11-29 Magneti Marelli France Moteur a combustion interne a injection directe a soupapes commandees
US7089894B2 (en) 2003-10-14 2006-08-15 Visteon Global Technologies, Inc. Electromechanical valve actuator assembly
US7152558B2 (en) 2003-10-14 2006-12-26 Visteon Global Technologies, Inc. Electromechanical valve actuator assembly
FR2919421B1 (fr) * 2007-07-23 2018-02-16 Schneider Electric Industries Sas Actionneur electromagnetique a au moins deux bobinages

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3500530A1 (de) 1985-01-09 1986-07-10 Binder Magnete GmbH, 7730 Villingen-Schwenningen Vorrichtung zur elektromagnetischen steuerung von hubventilen
DE3546513A1 (de) 1985-04-25 1987-02-19 Kloeckner Wolfgang Dr Verfahren und schaltung zum betreiben eines gaswechselventils
JP2707127B2 (ja) * 1988-12-28 1998-01-28 株式会社いすゞセラミックス研究所 電磁力バルブ駆動装置
US5022359A (en) * 1990-07-24 1991-06-11 North American Philips Corporation Actuator with energy recovery return
DE4426021A1 (de) * 1994-07-22 1996-01-25 Bosch Gmbh Robert Verfahren und Vorrichtung zur Ansteuerung eines elektromagnetischen Verbrauchers
DE19610468B4 (de) * 1995-08-08 2008-04-24 Fev Motorentechnik Gmbh Verfahren zur lastabhängigen Steuerung der Gaswechselventile an einer Kolbenbrennkraftmaschine
DE29703585U1 (de) * 1997-02-28 1998-06-25 Fev Motorentech Gmbh & Co Kg Elektromagnetischer Aktuator mit magnetischer Auftreffdämpfung

Also Published As

Publication number Publication date
WO1999006677A1 (fr) 1999-02-11
DE59806749D1 (de) 2003-01-30
EP0998623A1 (fr) 2000-05-10

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