EP1214721B1 - Elektromagnetischer aktuator - Google Patents
Elektromagnetischer aktuator Download PDFInfo
- Publication number
- EP1214721B1 EP1214721B1 EP00960670A EP00960670A EP1214721B1 EP 1214721 B1 EP1214721 B1 EP 1214721B1 EP 00960670 A EP00960670 A EP 00960670A EP 00960670 A EP00960670 A EP 00960670A EP 1214721 B1 EP1214721 B1 EP 1214721B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- armature
- electromagnet
- electromagnetic actuator
- actuator according
- changeover valve
- 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
Links
Images
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
- H01F7/14—Pivoting armatures
-
- 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
-
- 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 actuator with the features of the preamble of claim 1.
- Such an actuator is for example in the older Patent Application DE 198 24 537 A1.
- the gear ratio is i for both Electromagnets same.
- the invention is based on the object, the proposed Actuator to further optimize.
- the opening magnet must because of the relative large gas forces at the exhaust valve a relatively large lifting work Afford. Therefore, to save power, should the working air gap should be as small as possible, which is a smaller one Gear ratio i for the opening magnet requires.
- the closing magnet develops at a larger gear ratio a higher force on the valve axis.
- the closing magnet small.
- the effective anchor mass is determined by the Shaping the anchor (e.g., with a trapezoidal cross-section) slightly increased.
- the opening magnet gets a small middle Air gap, which reduces the performance.
- the magnets is designed as a characteristic magnet.
- the Opening magnet designed as a two-pole solenoid plunger, wherein the opening member opposite the armature part is formed such that in the electromagnet immersed anchor parts are closer to the pivot axis as the, those dipping anchor parts assigned Pole ends of the yoke.
- the use of a characteristic magnet for the opening magnet is known per se from EP 0 970 298 A1. Across from the second electromagnet is the anchor as Flat anchor formed. The electromagnets are there as Pot magnets formed, wherein the anchor is a linear Up and down movement performs. In the prior art is the anchor slidably mounted. The by manufacturing tolerances unavoidable air gap differences are relatively high Transverse forces result, whereby frictional forces are effected.
- the use of a characteristic magnet has the advantage that the high gas forces because of the higher telecontrol force overcome more easily such an electromagnet can be.
- the swiveling Anchor is the moving mass of the anchor by the invention and thus the energy requirement kept small.
- the usage one or more rolling bearings for the pivoting movement the anchor has the advantage that by manufacturing tolerances conditional lateral forces on the storage low Frictional losses bring with it.
- punched parts for the anchor and / or the yokes which can be produced as a fine stamped parts, can Tolerances and eddy current losses are kept small.
- the yoke can be adjusted to the anchor.
- the Use of the inventively designed characteristic magnet is also without the use of the features of the A1 possible.
- Fig. 1 are two two-pole electromagnets 1 and 2 the yokes 1a and 2a and windings 1b and 2b, respectively, are shown respectively.
- An associated with this electromagnet 1 and 2 Anchor 3 is attached to a lever which at his left end pivotally mounted about the pivot axis 4
- the bearing can be designed as a roller bearing, wherein one or more rolling bearings can be used.
- the forces acting on the armature 3 spring forces are here by a torsion bar, z. B. torsion bar or rotary tube 6, and the valve spring 9 applied.
- the torsion bar runs in the direction of the pivot axis and at least partially in a tube 7 formed by the lever 8 becomes. At the other end of the lever 8 this acts on one only indicated valve stem 10, to which the force the valve spring 9 acts.
- the solenoid 2 is the opening magnet.
- the hatched anchor 3 has here in cross section the shape of a trapezoid with non-parallel side surfaces.
- the center 3b of the lower anchor part is closer to the pivot axis 4 than the center 3a of the upper anchor part.
- the poles of the electromagnets are arranged so that they are associated with the anchor parts with the centers 3a and 3b. It follows that the transmission ratio i 1 of the electromagnet 1 is greater than the transmission ratio i 2 of the electromagnet 2.
- the anchor could also have the shape of a rhombus or a polygon.
- Electromagnet 11 associated part of the Ankers 13 is a flat anchor, is here in addition to the Electromagnet 12 associated anchor part as a plunger anchor formed with immersion parts 13a and 13b and the poles 12c of the yoke 12a are the immersion parts 13a and 13b in FIG the position shown obvious and for the pivoting movement suitably designed so that small air gaps form.
- the armature 13 and the Yokes 11a and 12a preferably composed of stamped parts, So they are laminated. Through the rolling bearing and the yokes that can be adjusted to the armature can be radial Air gaps are kept very small. The system effects here like a reluctance motor.
- the yokes of the magnets 1 and 2 are shown in Figs. 1 and 2 designed as U-magnets. They can also be called E-magnets or E / U magnets may be formed.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Magnetically Actuated Valves (AREA)
- Valve Device For Special Equipments (AREA)
Description
Claims (9)
- Elektromagnetischer Aktuator zur Betätigung eines Gaswechselventils (10) mit einem Elektromagneten (1) zum Schließen des Gaswechselventils und einem Elektromagneten (2) zum Öffnen des Gaswechselventils, mit einem zugehörigen das Gaswechselventil (10) betätigenden Anker (3) und mit auf den Anker (3) wirkenden, entgegengesetzt gerichteten Federkräften (6, 9), die ohne Betätigung eines Elektromagneten (1, 2) den Anker (3) in eine Zwischenstellung zwischen zwei Endstellungen stellen, wobei der Anker (3) durch die Elektromagneten (1, 2) wenigstens in der Nähe der Pole (2c) der Elektromagneten (1, 2) gehalten wird, wobei der Anker (3) um eine Schwenkachse (4) schwenkbar gelagert ist und wobei der Abstand l1 des Einwirkpunkts auf das Gaswechselventil von der Schwenkachse (4) größer als der Abstand l2 des Zentrums des Ankers von der Schwenkachse (4) ist mit einem Übersetzungsverhältnis i=l2/l1<1, dadurch gekennzeichnet, daß der Anker (3) derart ausgebildet ist, daß das Zentrum (3b) des dem Öffnungsmagneten (2) gegenüberliegenden Ankerteils näher an der Schwenkachse (4) liegt als das Zentrum (3a) des dem Schließmagneten(1) zugeordneten Ankerteils und daß die Pole (1c, 2c) der Elektromagnete (1,2) diesen Ankerteilen gegenüber liegend angeordnet sind.
- Elektromagnetischer Aktuator nach Anspruch 1, dadurch gekennzeichnet, daß wenigstens eines der Ankerteile als Tauchanker mit eintauchenden Ankerteilen (13a, 13b) ausgebildet ist.
- Elektromagnetischer Aktuator nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das dem Elektromagneten zum Öffnen des Gaswechselventils (12) zugeordnete Ankerteil als Tauchanker (13a, 13b) ausgebildet ist und daß die in den Elektromagneten (12) eintauchenden Ankerteile (13a, 13b) näher zur Schwenkachse (4) liegen als die diesen eintauchenden Ankerteilen (13a, 13b) zugeordneten Polenden (12c) des Jochs (12a) des Elektromagneten (12).
- Elektromagnetischer Aktuator nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß dem Elektromagneten zum Schließen des Gaswechselventils (1) ein Flachanker (3) zugeordnet ist oder der Elektromagnet (1) einen Flachanker aufweist.
- Elektromagnetischer Aktuator nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß für die schwenkbare Lagerung wenigstens ein Wälzlager (15) vorgesehen ist.
- Elektromagnetischer Aktuator nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet daß der Anker (3) und/oder die Joche (1a, 2a) aus Stanzteilen zusammengesetzt sind.
- Elektromagnetischer Aktuator nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Joche (1a, 2a) gegenüber dem Anker (3) justierbar sind.
- Elektromagnetischer Aktuator nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Elektromagnete (1, 2) die Form eines E oder E/U aufweisen.
- Elektromagnetischer Aktuator nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß der Elektromagnet zum Öffnen des Gaswechselventils zweipolig ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19945112 | 1999-09-21 | ||
DE19945112A DE19945112A1 (de) | 1999-09-21 | 1999-09-21 | Elektromagnetischer Aktuator |
PCT/EP2000/009037 WO2001022442A1 (de) | 1999-09-21 | 2000-09-15 | Elektromagnetischer aktuator |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1214721A1 EP1214721A1 (de) | 2002-06-19 |
EP1214721B1 true EP1214721B1 (de) | 2004-06-09 |
Family
ID=7922703
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00960670A Expired - Lifetime EP1214721B1 (de) | 1999-09-21 | 2000-09-15 | Elektromagnetischer aktuator |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1214721B1 (de) |
DE (2) | DE19945112A1 (de) |
WO (1) | WO2001022442A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10329020A1 (de) * | 2003-06-27 | 2005-01-13 | Daimlerchrysler Ag | Verfahren zur Zylinderabschaltung |
JP2008180140A (ja) * | 2007-01-24 | 2008-08-07 | Toyota Motor Corp | 電磁駆動弁 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1589726A1 (de) * | 1967-04-28 | 1970-05-14 | Olympia Buerosysteme Gmbh | Klappanker-Elektromagnet |
US3745495A (en) * | 1971-12-16 | 1973-07-10 | Ibm | Magnetic actuator mechanism |
IT974590B (it) * | 1972-08-12 | 1974-07-10 | Billi Spa | Congegno di comando ad impulsi elettrici per guidafili di mac chine da maglieria e per altri impieghi |
DE19628860B4 (de) * | 1996-07-17 | 2008-07-31 | Bayerische Motoren Werke Aktiengesellschaft | Elektromagnetische Betätigungsvorrichtung für ein Brennkraftmaschinen-Hubventil |
-
1999
- 1999-09-21 DE DE19945112A patent/DE19945112A1/de not_active Withdrawn
-
2000
- 2000-09-15 DE DE50006761T patent/DE50006761D1/de not_active Expired - Lifetime
- 2000-09-15 WO PCT/EP2000/009037 patent/WO2001022442A1/de active IP Right Grant
- 2000-09-15 EP EP00960670A patent/EP1214721B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE50006761D1 (de) | 2004-07-15 |
DE19945112A1 (de) | 2001-03-22 |
WO2001022442A1 (de) | 2001-03-29 |
EP1214721A1 (de) | 2002-06-19 |
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