EP2232509A2 - Ensemble d'un electroaimant et d'une palette d'electroaimant et actionneur de soupape com renant un tel ensemble - Google Patents
Ensemble d'un electroaimant et d'une palette d'electroaimant et actionneur de soupape com renant un tel ensembleInfo
- Publication number
- EP2232509A2 EP2232509A2 EP08872951A EP08872951A EP2232509A2 EP 2232509 A2 EP2232509 A2 EP 2232509A2 EP 08872951 A EP08872951 A EP 08872951A EP 08872951 A EP08872951 A EP 08872951A EP 2232509 A2 EP2232509 A2 EP 2232509A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- electromagnet
- pallet
- tilting
- edge
- assembly
- 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.)
- Withdrawn
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
- H01F7/081—Magnetic constructions
-
- 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
-
- 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
Definitions
- the invention of the present application was born from a problem of control of the cylinder valves of internal combustion engines without camshaft, more precisely by what is called an electromagnetic camshaft, which is called a technology without cam (camless).
- a valve 1 whether the intake or exhaust, is recalled on its seat 5 by a valve spring 20 mounted around a valve stem 3 and, under the action of a solenoid pallet 12 of magnetic material, a pallet spring 17 and an opening electromagnet 15, the valve 1 is moved away from its seat 5 by a shaft of the pallet 9 repelling the valve stem 3.
- the opening electromagnet 15 is generally associated with a closing electromagnet 14, the pallet 12 being mounted between the two electromagnets 14, 15.
- an electromagnet 14 (15) conventionally comprises a stack of sheets stacked with permanent magnets 18 and a coil 20, such an electromagnet 14 making it possible to generate magnetic forces of high amplitude in order to move the pallet 12 between its switched positions.
- the electromagnet 14 is machined so that the magnets 18 are set back with respect to the abutment zones of the pallet 12.
- 141G, 141C, 141D branches are machined in the body of the electromagnet 14 to protect the magnets 18, the central branch 141 C being recessed with respect to the lateral branches 141G, 141D.
- the electromagnet 14 can simultaneously control two electromagnet vanes 12 respectively connecting to the branches of the electromagnet arranged on both sides of the plane (P).
- the magnetic force exerted by the electromagnet 14 decreases, the left edge of the left lateral branch 14 IG of the electromagnet 14 decreases.
- electromagnet 14 exerting, in this example, a magnetic attraction greater than its right edge thus causes a tilting of the pallet 12 during its descent while its rod 9 is, in turn, guided axially in its movement by a slide 10 This results in a tilting angle ⁇ between the pallet 12 and its rod 9.
- the tilting of the pallet 12 follows various statistical laws and can not be predicted with certainty, the left edge 12 IG of the pallet 12 being able to detach itself before the right edge 12 ID. In addition, this tilting appears as well when the pallet attaches than when it is detached from an electromagnet.
- the random tilts of the pallet 12, both at closing and opening create difficulties in establishing the control laws controlling the operation of the engine valves.
- the invention relates to an assembly of an electromagnet and an electromagnet pallet adapted to magnetically bond to said electromagnet, the pallet comprising a connecting edge arranged to bond with a connecting arm formed in the electromagnet.
- electromagnet characterized in that the connection between said connecting edge of the pallet and said connecting branch of the electromagnet is asymmetrical so as to promote the tilting of the pallet in a predetermined direction when the magnetic link is broken.
- the connecting branch of the electromagnet is in the form of a rectangular block comprising a recess step staircase forming the tilting gap.
- a tilting edge of the pallet perpendicular to the connecting edge of the pallet, is machined to provide a tilting gap between the connecting edge of the pallet and the connecting arm of the electromagnet.
- the electromagnet is not machined which allows the use of standard electromagnets with a pallet machined in the same valve actuator.
- the two tilting edges of the pallet make it possible to connect magnetically to standard closing and opening pallets.
- the difference in thickness between the tilting edges of the pallet is between 0.1 and 0.5 mm.
- Such a valve actuator advantageously makes it possible to force the tilting of the pallet both at opening and at closing, the tilting of the pallet being controlled and the control laws of the actuator improved.
- FIG. 4 shows a top view of a pallet of a valve actuator according to a second prior art
- FIG. 6A and 6B respectively show a front view and a side view of a portion of the electromagnet of Figure 5 connected to an electromagnet pallet;
- the pallet 12 is in the form of a block, whose length extends along the X axis and the width along the Y axis, having two lateral edges 121L and two longitudinal edges 121G, 121D, the longitudinal edges 121G , 121D being designated, thereafter, tilting edges.
- the contact faces 50 of the connecting branches 141G, 141D are each machined to provide a recess in "step" to provide the gap 145.
- the invention has been described here for a pallet detachable from a closing electromagnet. It goes without saying that the invention also applies to a pallet attaching / detaching from an opening / closing electromagnet.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Valve Device For Special Equipments (AREA)
- Magnetically Actuated Valves (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0708940A FR2925754B1 (fr) | 2007-12-20 | 2007-12-20 | Ensemble d'un electroaimant et d'une palette d'electroaimant et actionneur de soupape comprenant un tel ensemble |
PCT/FR2008/001738 WO2009106700A2 (fr) | 2007-12-20 | 2008-12-15 | Ensemble d'un electroaimant et d'une palette d'electroaimant et actionneur de soupape com renant un tel ensemble |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2232509A2 true EP2232509A2 (fr) | 2010-09-29 |
Family
ID=39769199
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08872951A Withdrawn EP2232509A2 (fr) | 2007-12-20 | 2008-12-15 | Ensemble d'un electroaimant et d'une palette d'electroaimant et actionneur de soupape com renant un tel ensemble |
Country Status (7)
Country | Link |
---|---|
US (1) | US20100294221A1 (fr) |
EP (1) | EP2232509A2 (fr) |
JP (1) | JP2011507480A (fr) |
KR (1) | KR20100099739A (fr) |
CN (1) | CN101946293A (fr) |
FR (1) | FR2925754B1 (fr) |
WO (1) | WO2009106700A2 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104791504A (zh) * | 2015-03-27 | 2015-07-22 | 苏州福润机械有限公司 | 一种通过电磁铁控制的排烟阀 |
JP6421745B2 (ja) * | 2015-12-11 | 2018-11-14 | オムロン株式会社 | リレー |
JP6575343B2 (ja) | 2015-12-11 | 2019-09-18 | オムロン株式会社 | リレー |
US10726985B2 (en) * | 2018-03-22 | 2020-07-28 | Schaeffler Technologies AG & Co. KG | Multi-stage actuator assembly |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8519251D0 (en) * | 1985-07-31 | 1985-09-04 | Lucas Ind Plc | Fuel injector |
JP3624708B2 (ja) * | 1998-09-07 | 2005-03-02 | 日産自動車株式会社 | 電磁駆動装置の通電制御方法 |
DE19901863A1 (de) * | 1999-01-19 | 2000-07-20 | Joachim H Scholz | Elektromagnet mit einstellbarer Kraftabgabe |
JP2002038912A (ja) * | 1999-12-09 | 2002-02-06 | Sumitomo Electric Ind Ltd | 内燃機関用弁開閉機構 |
DE10120401A1 (de) * | 2001-04-25 | 2002-10-31 | Daimler Chrysler Ag | Vorrichtung zur Betätigung eines Gaswechselventils |
FR2836755B1 (fr) * | 2002-03-01 | 2004-08-20 | Johnson Contr Automotive Elect | Actionneur electromagnetique a force d'attraction controlee |
FR2870629B1 (fr) * | 2004-05-19 | 2006-09-01 | Johnson Controls Tech Co | Actionneur electromagnetique avec un electroaimant a aimant comportant un noyau unitaire |
JP4311392B2 (ja) * | 2005-10-05 | 2009-08-12 | トヨタ自動車株式会社 | 電磁駆動式動弁機構の制御装置 |
FR2893975B1 (fr) * | 2005-11-25 | 2008-02-08 | Valeo Sys Controle Moteur Sas | Procede de commande d'un actionneur ayant un organe mobile asservi en position |
FR2894378B1 (fr) * | 2005-12-02 | 2008-02-29 | Valeo Sys Controle Moteur Sas | Actionneur electromagnetique a aimants permanents disposes en v, avec degagement central. |
-
2007
- 2007-12-20 FR FR0708940A patent/FR2925754B1/fr not_active Expired - Fee Related
-
2008
- 2008-12-15 WO PCT/FR2008/001738 patent/WO2009106700A2/fr active Application Filing
- 2008-12-15 US US12/809,883 patent/US20100294221A1/en not_active Abandoned
- 2008-12-15 JP JP2010538828A patent/JP2011507480A/ja active Pending
- 2008-12-15 EP EP08872951A patent/EP2232509A2/fr not_active Withdrawn
- 2008-12-15 KR KR1020107016270A patent/KR20100099739A/ko not_active Application Discontinuation
- 2008-12-15 CN CN2008801271785A patent/CN101946293A/zh active Pending
Non-Patent Citations (1)
Title |
---|
See references of WO2009106700A2 * |
Also Published As
Publication number | Publication date |
---|---|
JP2011507480A (ja) | 2011-03-03 |
FR2925754A1 (fr) | 2009-06-26 |
WO2009106700A3 (fr) | 2009-11-05 |
CN101946293A (zh) | 2011-01-12 |
FR2925754B1 (fr) | 2015-06-05 |
US20100294221A1 (en) | 2010-11-25 |
WO2009106700A2 (fr) | 2009-09-03 |
KR20100099739A (ko) | 2010-09-13 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
Effective date: 20100604 |
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AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR |
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AX | Request for extension of the european patent |
Extension state: AL BA MK RS |
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RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: VIENNOT, SEVERIN Inventor name: TALON, EMMANUEL Inventor name: MATEOS-BUGATTI, MANUELA |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: VIENNOT, SEVERIN Inventor name: TALON, EMMANUEL Inventor name: MATEOS-BUGATTI, MANUELA |
|
DAX | Request for extension of the european patent (deleted) | ||
17Q | First examination report despatched |
Effective date: 20140805 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20180703 |