EP1091368A1 - Actionneur électrique notamment pour soupape de moteur de véhicule automobile - Google Patents
Actionneur électrique notamment pour soupape de moteur de véhicule automobile Download PDFInfo
- Publication number
- EP1091368A1 EP1091368A1 EP00402628A EP00402628A EP1091368A1 EP 1091368 A1 EP1091368 A1 EP 1091368A1 EP 00402628 A EP00402628 A EP 00402628A EP 00402628 A EP00402628 A EP 00402628A EP 1091368 A1 EP1091368 A1 EP 1091368A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electromagnets
- armature
- actuator according
- frame
- elastic members
- 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
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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
- H01F7/16—Rectilinearly-movable armatures
- H01F7/1638—Armatures not entering the winding
-
- 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
Definitions
- the present invention relates to an electric actuator.
- the invention relates to an electric actuator with two stable active positions and a rest position, comprising a movable armature connected to a member to be actuated, such as a valve motor valve motor vehicle.
- actuators of this type in which the armature is arranged in the air gap separating a first and a second electromagnet placed opposite one another and is associated with two elastic members arranged on either side of this frame, to stress the latter in the rest position, the electromagnets being connected to means feeding them, in order, in cooperation with the elastic members, to move and alternately maintain this armature in active positions stable against the first and second electromagnets.
- the operating principle of such an actuator is based on the use of a harmonic oscillating system controlled by two independent electromagnets.
- Each engine valve is connected to an armature balanced between two compression springs.
- an initialization phase which consists, for example, in ordering alternately the electromagnets at the natural frequency of the armature-organ system to be actuated, the armature is glued against one of the electromagnets of the actuator depending on whether you want to keep the valve open or closed.
- Each electromagnet is controlled individually.
- the electromagnet connection wiring also degrades the reliability of the actuator.
- the object of the invention is therefore to solve these problems.
- the invention relates to an electric actuator with two stable active positions and a rest position, including a frame mobile connected to a member to be actuated, such as a vehicle engine valve automobile, the armature being arranged in the air gap separating a first and a second electromagnets placed opposite one another and being associated with two elastic members arranged on either side of this frame to stress this in the rest position, the electromagnets being connected to supply means of these, to, in cooperation with the elastic organs, move and alternately maintain this armature in stable active positions against the first and second electromagnets, characterized in that the means for supplying electromagnets are formed by a power source common of these controlling their food at the same time.
- This figure shows an electric actuator with two stable active positions and one rest position, this actuator being designated by the general reference 1.
- This actuator in fact comprises a movable armature designated by the general reference 2, which is connected to a member to be actuated such as for example a motor vehicle engine valve, designated by the general reference 3.
- the frame is then placed in the air gap separating a first and a second electromagnet, designated by the references 4 and 5 in this figure, placed opposite each other.
- the frame 2 is also associated with two designated elastic members by the general references 6 and 7 in this figure, and constituted for example by springs arranged on either side of this frame to stress this in the rest position.
- the electromagnets are connected to power supply means of these designated by the general reference 8, for, in cooperation with the elastic members, alternately move and hold the armature 2 in stable active positions against the first and second electromagnets.
- a position sensor designated by the general reference 9 is also associated with this frame, this position sensor being connected to the means supply 8 of the electromagnets to ensure correct control of the supply of these, that is to say cut or establish this supply when one wishes to pass the armature and therefore the valve between their stable positions.
- the means for supplying the electromagnets are formed by a common power source of these driving at the same time their power supply, these electromagnets then being connected in parallel or in series across the common power source 8.
- This structure allows a very significant reduction in the number of electronic power components and a simplification of the wiring used, with a very clear cost and reliability impact.
- the rest position of the armature 2 is offset from the plane of equilibrium of the magnetic forces opposites of attraction of this generated by the electromagnets when these are powered.
- the elastic organs constituted by the springs 6 and 7, can be symmetrical, while the electromagnets respectively 4 and 5, present an asymmetry so as to generate forces opposite magnetic attraction asymmetrical on the frame 2 to allow to this armature to move towards one of the electromagnets at the setting tension of these.
- the electromagnets 4,5 can also be symmetrical, while the elastic members constituted by the springs 6 and 7 may exhibit an asymmetry so as to define a rest position of the armature offset from the plane of symmetry of the electromagnets to allow the armature to move towards one of these.
- the armature is then closer to one of the electromagnets when energizing of the coils thereof, which allows its displacement towards this one.
- magnetic shielding means can be associated with these electromagnets.
- the initialization phase of this system then also consists of supply the electromagnets so as to bring the armature against one of them, either directly if the means of supply are capable of supplying strong currents to glue the reinforcement at once against the corresponding electromagnet, either indirectly by oscillation of the system by ordering it at its natural frequency.
- this actuator has a certain number advantages over those of the state of the art insofar as the unique power supply means of the two electromagnets can be used in association with unique wiring means of these to these means, this which reduces the number of components used and simplifies connection from these electromagnets to these supply means in order to reduce the cost of this function and increase its reliability.
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)
- Fluid-Driven Valves (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Hybrid Electric Vehicles (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
Description
Claims (9)
- Actionneur électrique à deux positions actives stables et une position de repos, comprenant une armature mobile (2) reliée à un organe à actionner (3), tel qu'une soupape de moteur de véhicule automobile, l'armature (2) étant disposée dans l'entrefer séparant un premier et un second électroaimants (4,5) placés en regard l'un de l'autre et étant associée à deux organes élastiques (6,7) disposés de part et d'autre de cette armature (2) pour solliciter celle-ci en position de repos, les électroaimants (4,5) étant reliés à des moyens d'alimentation (8) de ceux-ci, pour, en coopération avec les organes élastiques (6,7) déplacer et maintenir alternativement cette armature (2) dans des positions actives stables contre le premier et le second électroaimants (4,5), caractérisé en ce que les moyens d'alimentation des électroaimants sont formés par une source (8) d'alimentation commune de ceux-ci pilotant en même temps leur alimentation.
- Actionneur selon la revendication 1, caractérisé en ce que la position de repos de l'armature (2) est décalée par rapport au plan d'équilibre des forces magnétiques opposées d'attraction de celle-ci engendrées par les électroaimants (4,5) lorsque ceux-ci sont alimentés.
- Actionneur selon la revendication 2, caractérisé en ce que les organes élastiques (6,7) sont symétriques et en ce que les électroaimants (4,5) présentent une dissymétrie de manière à engendrer des forces magnétiques opposées d'attraction dissymétriques sur l'armature (2) pour permettre à cette armature de se déplacer vers l'un des électroaimants.
- Actionneur selon la revendication 3, caractérisé en ce que les électroaimants (4,5) comportent des bobines (10,11) présentant des nombres de spires différents.
- Actionneur selon la revendication 2, caractérisé en ce que les électroaimants (4,5) sont symétriques et en ce que les organes élastiques (6,7) présentent une dissymétrie de manière à définir une position de repos de l'armature décalée par rapport au plan de symétrie des électroaimants pour permettre à l'armature (2) de se déplacer vers l'un des électroaimants.
- Actionneur selon l'une quelconque des revendications précédentes, caractérisé en ce que l'armature (2) est associée à un capteur de position (9) raccordé aux moyens d'alimentation (8) des électroaimants afin de piloter l'alimentation de ceux-ci.
- Actionneur selon l'une quelconque des revendications précédentes, caractérisé en ce que les électroaimants (4,5) sont associés à des moyens de blindage magnétique.
- Actionneur selon l'une quelconque des revendications précédentes, caractérisé en ce que les électroaimants (4,5) sont raccordés en série aux bornes de la source d'alimentation commune (8).
- Actionneur selon l'une quelconque des revendications 1 à 7, caractérisé en ce que les électroaimants (4,5) sont raccordés en parallèle aux bornes de la source d'alimentation commune (8).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9912365 | 1999-10-04 | ||
FR9912365A FR2799302B1 (fr) | 1999-10-04 | 1999-10-04 | Actionneur electrique notamment pour soupape de moteur de vehicule automobile |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1091368A1 true EP1091368A1 (fr) | 2001-04-11 |
EP1091368B1 EP1091368B1 (fr) | 2008-05-14 |
Family
ID=9550556
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00402628A Expired - Lifetime EP1091368B1 (fr) | 1999-10-04 | 2000-09-21 | Actionneur électrique notamment pour soupape de moteur de véhicule automobile |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1091368B1 (fr) |
AT (1) | ATE395707T1 (fr) |
DE (1) | DE60038857D1 (fr) |
ES (1) | ES2304935T3 (fr) |
FR (1) | FR2799302B1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1752692A1 (fr) * | 2005-08-08 | 2007-02-14 | Toyota Jidosha Kabushiki Kaisha | Soupape à commande électromagnétique |
US7353787B2 (en) | 2005-08-08 | 2008-04-08 | Toyota Jidosha Kabushiki Kaisha | Electromagnetically driven valve |
US7387094B2 (en) | 2005-08-08 | 2008-06-17 | Toyota Jidosha Kabushiki Kaisha | Electromagnetically driven valve |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1613101A1 (de) * | 1967-04-14 | 1970-05-21 | Kernforschung Gmbh Ges Fuer | Elektromagnetischer Antrieb |
EP0024995A1 (fr) * | 1979-09-04 | 1981-03-11 | The Bendix Corporation | Actionneur électromagnétique à solénoide |
US4504198A (en) * | 1980-09-08 | 1985-03-12 | Taisan Industrial Co., Ltd. | Electromagnetic pump |
US4533890A (en) * | 1984-12-24 | 1985-08-06 | General Motors Corporation | Permanent magnet bistable solenoid actuator |
EP0376716A1 (fr) * | 1988-12-28 | 1990-07-04 | Isuzu Motors Limited | Dispositif de commande d'une soupape entraînée par force électromagnétique |
EP0384663A1 (fr) * | 1989-02-20 | 1990-08-29 | Isuzu Ceramics Research Institute Co., Ltd. | Dispositif de commande de soupape à force électromagnétique |
EP0662697A1 (fr) * | 1994-01-07 | 1995-07-12 | Automobiles Peugeot | Procédé de commande d'un actionneur électromagnétique bistable et dispositif pour sa mise en oeuvre |
-
1999
- 1999-10-04 FR FR9912365A patent/FR2799302B1/fr not_active Expired - Fee Related
-
2000
- 2000-09-21 AT AT00402628T patent/ATE395707T1/de not_active IP Right Cessation
- 2000-09-21 ES ES00402628T patent/ES2304935T3/es not_active Expired - Lifetime
- 2000-09-21 EP EP00402628A patent/EP1091368B1/fr not_active Expired - Lifetime
- 2000-09-21 DE DE60038857T patent/DE60038857D1/de not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1613101A1 (de) * | 1967-04-14 | 1970-05-21 | Kernforschung Gmbh Ges Fuer | Elektromagnetischer Antrieb |
EP0024995A1 (fr) * | 1979-09-04 | 1981-03-11 | The Bendix Corporation | Actionneur électromagnétique à solénoide |
US4504198A (en) * | 1980-09-08 | 1985-03-12 | Taisan Industrial Co., Ltd. | Electromagnetic pump |
US4533890A (en) * | 1984-12-24 | 1985-08-06 | General Motors Corporation | Permanent magnet bistable solenoid actuator |
EP0376716A1 (fr) * | 1988-12-28 | 1990-07-04 | Isuzu Motors Limited | Dispositif de commande d'une soupape entraînée par force électromagnétique |
EP0384663A1 (fr) * | 1989-02-20 | 1990-08-29 | Isuzu Ceramics Research Institute Co., Ltd. | Dispositif de commande de soupape à force électromagnétique |
EP0662697A1 (fr) * | 1994-01-07 | 1995-07-12 | Automobiles Peugeot | Procédé de commande d'un actionneur électromagnétique bistable et dispositif pour sa mise en oeuvre |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1752692A1 (fr) * | 2005-08-08 | 2007-02-14 | Toyota Jidosha Kabushiki Kaisha | Soupape à commande électromagnétique |
US7353787B2 (en) | 2005-08-08 | 2008-04-08 | Toyota Jidosha Kabushiki Kaisha | Electromagnetically driven valve |
US7387094B2 (en) | 2005-08-08 | 2008-06-17 | Toyota Jidosha Kabushiki Kaisha | Electromagnetically driven valve |
CN100427727C (zh) * | 2005-08-08 | 2008-10-22 | 丰田自动车株式会社 | 电磁驱动阀 |
Also Published As
Publication number | Publication date |
---|---|
EP1091368B1 (fr) | 2008-05-14 |
ES2304935T3 (es) | 2008-11-01 |
DE60038857D1 (de) | 2008-06-26 |
ATE395707T1 (de) | 2008-05-15 |
FR2799302A1 (fr) | 2001-04-06 |
FR2799302B1 (fr) | 2002-01-18 |
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