EP0136594A2 - Electro-aimant - Google Patents

Electro-aimant Download PDF

Info

Publication number
EP0136594A2
EP0136594A2 EP84110661A EP84110661A EP0136594A2 EP 0136594 A2 EP0136594 A2 EP 0136594A2 EP 84110661 A EP84110661 A EP 84110661A EP 84110661 A EP84110661 A EP 84110661A EP 0136594 A2 EP0136594 A2 EP 0136594A2
Authority
EP
European Patent Office
Prior art keywords
pole
armature
poles
magnet
pole part
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
Application number
EP84110661A
Other languages
German (de)
English (en)
Other versions
EP0136594B1 (fr
EP0136594A3 (fr
Inventor
Hans Dipl.-Ing. Kubach
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.)
Robert Bosch GmbH
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 EP0136594A2 publication Critical patent/EP0136594A2/fr
Publication of EP0136594A3 publication Critical patent/EP0136594A3/xx
Application granted granted Critical
Publication of EP0136594B1 publication Critical patent/EP0136594B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F02M51/0689—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means and permanent magnets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F02M51/0614—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of electromagnets or fixed armature
    • F02M51/0617—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of electromagnets or fixed armature having two or more electromagnets
    • F02M51/0621—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of electromagnets or fixed armature having two or more electromagnets acting on one mobile armature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • H01F7/04—Means for releasing the attractive force
    • 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
    • H01F7/20—Electromagnets; Actuators including electromagnets without armatures
    • H01F7/206—Electromagnets for lifting, handling or transporting of magnetic pieces or material
    • 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
    • H01F7/20—Electromagnets; Actuators including electromagnets without armatures
    • H01F7/206—Electromagnets for lifting, handling or transporting of magnetic pieces or material
    • H01F2007/208—Electromagnets for lifting, handling or transporting of magnetic pieces or material combined with permanent magnets

Definitions

  • the invention relates to an electromagnet according to the preamble of the main claim.
  • An electromagnetically actuated valve has already been proposed, in which the armature assumes a position at a distance from the core in the non-energized state, while the armature is pulled toward the core in the case of electromagnetic excitation.
  • Such a configuration is not desirable in many areas of application, because e.g. when used as an outwardly opening injection valve in this case, the electromagnet system must be constantly excited to close the valve.
  • the electromagnet according to the invention with the characterizing features of the main claim has the advantage that, when the electromagnet is not energized, the armature rests on the core and falls away from it when the magnet is excited, the electromagnet being small in size and having a very high control accuracy and having a long service life.
  • An embodiment of an electromagnet with the characterizing features of claim 3 is particularly advantageous, as a result of which the cross sections of the pole parts are very greatly reduced, which, in addition to miniaturization, enables a reduction in the scattering losses.
  • FIG. 1 shows a first exemplary embodiment of an electromagnet according to the invention
  • FIG. 2 shows a second exemplary embodiment of an electromagnet according to the invention
  • FIG. 3 shows a third exemplary embodiment of an electromagnet according to the invention
  • FIG. 4 shows a partial representation of the design of guide sections
  • FIG. 5 shows a partial representation of a valve part actuated by an armature.
  • the core is formed from a first pole part 1 and a second pole part 2 made of soft iron, each of which rests approximately parallel to another end of a first permanent magnet 3.
  • the first pole part 1 has an angled first guide section 4 and the second pole part 2 has an angled second guide section 5.
  • the first guide section 4 and the second guide section 5 thus run towards one another tet that they limit an air gap 6 between them.
  • a first magnet coil is arranged on the first pole part 1 and a second magnet coil 9 is arranged on the second pole part 2.
  • the first guide section 4 and the second guide section 5 run between the first permanent magnet 3 and the magnet coils 8 and 9.
  • the first pole part 1 ends in a first pole 10 and the second pole part 2 in a second pole 11.
  • An armature 12 Soft magnetic material is mounted near the poles 10, 11 so that it can perform an axial movement.
  • the poles 10, 11 are fed onto the armature 12 in a suitable manner so that the field lines can run as cheaply as possible.
  • the poles 10, 11 can be provided with an inclination directed towards one another and have a concave surface 13 at the pole 10 and 1a at the pole 11, which surface extends over both poles 10, 11 and which faces a convex surface 15 of the armature 12.
  • the armature 12 can be connected to a movable valve part 17 of a fuel injection valve for fuel injection systems of internal combustion engines, which is not otherwise shown, via which fuel can be injected into the intake manifold of internal combustion engines in a known manner.
  • the movable valve part 17 is made of non-magnetic material and has a sealing part 18 which cooperates with a valve seat 19 in a valve seat body 20 made of non-magnetic material.
  • the valve seat body 20 is inserted into a valve housing, not shown. Upstream of the valve seat 19, a flow bore 21 is provided in the valve seat body 20, through which a pin 22 of the armature 12 projects, which is fastened in a fastening bore 23 of the valve part 17.
  • valve stroke ie the stroke of the interconnected elements 12, 17 can be determined in the desired manner by suitable axial assignment of armature 12 and valve part 17.
  • a flat stop surface 26 is provided on the armature 12, which comes into contact with the valve seat body 20 when the sealing part 18 is lifted off the valve seat 19.
  • the flow cross section 30 can be designed to be throttling and thus serve for metering.
  • a narrow cylindrical guide section 31 on the pin 22, which projects into the flow bore 21 with a close fit, can be used for the radial centering of armature 12 and valve part 17.
  • the armature 12 rests with its stop surface 26 on the valve seat body 20, and fuel can enter an annular gap 32 via the open valve seat 19 as a fuel film of the same thickness all around, which between the A spherical shape of the surface of the sealing part 18 and a spray opening 33, which adjoins the valve seat 19 in the valve seat body 20 in the direction of flow, is formed with an expanding diameter, in which it flows outwards on the surface of the sealing part flows and mixes with the ambient air, which also mixes with the fuel from the inside after tearing off the conical fuel film when the sharp-edged end face 24 of the sealing part 18 is reached.
  • the electromagnetic flux 0 ⁇ i arises from the application of a current i to each of the magnet coils 8, 9 and runs over the armature 12 in the opposite direction of the permanent magnetic flux 0 ⁇ P2 .
  • the armature 12 is acted on in the direction of the poles 10, 11, that is to say the valve part 17 is held on the valve seat 19 in the closed position.
  • the parts that remain the same and have the same effect as in the exemplary embodiment in FIG. 1 are identified by the same reference numerals.
  • the design of the exemplary embodiment according to FIG. 2 differs from the exemplary embodiment according to FIG. 1 in that the first permanent magnet 3 connects the pole parts 1, 2 between the poles 10, 11 and the magnet coils 8, 9 and the magnet coils 8, 9 to the Pole parts 1, 2 are arranged between the first permanent magnet 3 and the guide sections 4, 5.
  • the guide sections 4, 5 with the air gap 6 are required here so that the first permanent magnet 3 is not short-circuited.
  • FIGS. 1, 2 and 3 the armature 12 is shown in a position in which it has dropped from the poles 10, 11 and thus opens a fuel injection valve designed according to FIG. 5.
  • the area around the air gap 6 at the guide sections 4, 5 can be made of a magnetic material with a large negative temperature coefficient of the saturation induction.
  • a magnet arrangement derives less permanent magnetic flux at high temperatures.
  • such a material, which is operated in the saturation region can be arranged parallel to the air gap 6 in a manner not shown. It is more economical to saturate the saturated temperature-dependent magnetic conductor only in an area adjacent to the unsaturated magnetic conductor, in that at least one of the guide sections 4, 5 has a pro provided with tips 36 on its end face facing the other guide section fil has. The saturated tips 36 dissipate less permanent magnetic flux, as desired, at higher temperatures.
  • the electromagnetic flux 0 ⁇ i can flow relatively easily in the sense of additional saturation.
  • the resistance that the electromagnetic flux 0 ⁇ i finds on the saturated material is greater at a higher temperature, so that 0 ⁇ i decreases at a high temperature similar to the permanent flux.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Magnetically Actuated Valves (AREA)
  • Electromagnets (AREA)
EP84110661A 1983-10-04 1984-09-07 Electro-aimant Expired EP0136594B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833336011 DE3336011A1 (de) 1983-10-04 1983-10-04 Elektromagnet
DE3336011 1983-10-04

Publications (3)

Publication Number Publication Date
EP0136594A2 true EP0136594A2 (fr) 1985-04-10
EP0136594A3 EP0136594A3 (fr) 1985-06-26
EP0136594B1 EP0136594B1 (fr) 1988-12-07

Family

ID=6210920

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84110661A Expired EP0136594B1 (fr) 1983-10-04 1984-09-07 Electro-aimant

Country Status (5)

Country Link
US (1) US4546339A (fr)
EP (1) EP0136594B1 (fr)
JP (1) JPS6080206A (fr)
AU (1) AU571001B2 (fr)
DE (2) DE3336011A1 (fr)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2578294A1 (fr) * 1985-03-02 1986-09-05 Bosch Gmbh Robert Injecteur de carburant a commande electromagnetique et procede de fabrication
EP0204181A1 (fr) * 1985-06-05 1986-12-10 Robert Bosch Gmbh Electroaimant
EP0225388A4 (fr) * 1985-06-04 1987-10-19 Mitsubishi Mining & Cement Co Activateur electromagnetique.
EP0713814A1 (fr) * 1994-11-22 1996-05-29 Crown Equipment Corporation Commande proportionnelle pour un frein à aimant permanent
EP3034853A1 (fr) * 2014-12-15 2016-06-22 Continental Automotive GmbH Ensemble de bobine et soupape d'injection de fluide
USD879973S1 (en) 2018-04-11 2020-03-31 Johnson & Johnson Consumer Inc. Adhesive bandage with decorated pad
USD879975S1 (en) 2018-06-27 2020-03-31 Johnson & Johnson Consumer Inc. Adhesive bandage with decorated pad
USD879972S1 (en) 2018-04-11 2020-03-31 Johnson & Johnson Consumer Inc. Adhesive bandage with decorated pad
USD879974S1 (en) 2018-06-27 2020-03-31 Johnson & Johnson Consumer Inc. Adhesive bandage with decorated pad
USD880705S1 (en) 2018-04-11 2020-04-07 Johnson & Johnson Consumer Inc. Adhesive bandage with decorated pad
USD887564S1 (en) 2018-06-27 2020-06-16 Johnson & Johnson Consumer Inc. Adhesive bandage with decorated pad
USD887563S1 (en) 2018-06-27 2020-06-16 Johnson & Johnson Consumer Inc. Adhesive bandage with decorated pad
USD913507S1 (en) 2018-12-10 2021-03-16 Johnson & Johnson Consumer Inc. Adhesive bandage with decorated pad
USD918398S1 (en) 2018-12-10 2021-05-04 Johnson & Johnson Consumer Inc. Adhesive bandage with decorated pad
US12268576B2 (en) 2017-04-11 2025-04-08 Kenvue Brands Llc Extensible dressings

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5990968A (ja) * 1982-11-17 1984-05-25 Fuji Electric Co Ltd 発受光一体化素子
JPS60261111A (ja) * 1984-06-08 1985-12-24 Mitsubishi Mining & Cement Co Ltd 電磁アクチユエ−タ
US4559388A (en) * 1984-12-19 1985-12-17 General Electric Company Copolyester-carbonate composition
DE3507443A1 (de) * 1985-03-02 1986-09-04 Robert Bosch Gmbh, 7000 Stuttgart Elektromagnetisch betaetigbares kraftstoffeinspritzventil
DE3909893A1 (de) * 1989-03-25 1990-09-27 Bosch Gmbh Robert Elektromagnetisch betaetigbares ventil
DE3921151A1 (de) * 1989-06-28 1991-01-10 Bosch Gmbh Robert Magnetsystem
US5703550A (en) * 1995-12-26 1997-12-30 General Motors Corporation Magnetic latching relay
TW410354B (en) * 1998-01-27 2000-11-01 Genesis Kk Hybrid-type magnet and stepping motor including same
JP2001307919A (ja) * 2000-04-24 2001-11-02 Genesis:Kk ハイブリッド型磁石
JP2002025819A (ja) * 2000-05-01 2002-01-25 Genesis:Kk ハイブリッド形磁石を用いた磁力式吸着装置
JP2002110418A (ja) * 2000-09-29 2002-04-12 Genesis:Kk 吸引基本構造体
DE10140559A1 (de) * 2001-08-17 2003-02-27 Moeller Gmbh Elektromagnetanordnung für einen Schalter
FR2849262B1 (fr) * 2002-12-23 2006-12-29 Johnson Controls Tech Co Actionneur electromagnetique de soupape a aimant permanent
JP4064934B2 (ja) * 2004-02-27 2008-03-19 三菱重工業株式会社 電磁弁装置
TWI354079B (en) * 2008-10-03 2011-12-11 Univ Nat Taipei Technology Bi-directional electromechanical valve
DE102010029595A1 (de) * 2010-06-01 2011-12-01 Robert Bosch Gmbh Magnetbaugruppe sowie Einspritzventil mit einer Magnetbaugruppe
US10541593B2 (en) * 2013-11-20 2020-01-21 Shanshan Dai AC permanent-magnet switched reluctance motor
KR101553168B1 (ko) * 2014-06-24 2015-09-14 최태광 잔류 자기를 최소화한 자성체 홀딩 장치
JP6658177B2 (ja) * 2016-03-23 2020-03-04 株式会社豊田中央研究所 電磁アクチュエータ

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3143690A (en) * 1962-01-25 1964-08-04 Ampex Electromagnetic pinch roller actuator
JPS5740522B2 (fr) * 1974-01-18 1982-08-28
JPS6044809B2 (ja) * 1976-11-15 1985-10-05 キヤノン株式会社 電磁石装置
DD153505A3 (de) * 1980-03-07 1982-01-13 Rolf Sobadky Magnetbetaetigte brennstoffeinspritzvorrichtung

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2578294A1 (fr) * 1985-03-02 1986-09-05 Bosch Gmbh Robert Injecteur de carburant a commande electromagnetique et procede de fabrication
EP0225388A4 (fr) * 1985-06-04 1987-10-19 Mitsubishi Mining & Cement Co Activateur electromagnetique.
EP0204181A1 (fr) * 1985-06-05 1986-12-10 Robert Bosch Gmbh Electroaimant
EP0713814A1 (fr) * 1994-11-22 1996-05-29 Crown Equipment Corporation Commande proportionnelle pour un frein à aimant permanent
AU687971B2 (en) * 1994-11-22 1998-03-05 Crown Equipment Corporation Proportional control of a permanent magnet brake
EP3034853A1 (fr) * 2014-12-15 2016-06-22 Continental Automotive GmbH Ensemble de bobine et soupape d'injection de fluide
US12268576B2 (en) 2017-04-11 2025-04-08 Kenvue Brands Llc Extensible dressings
USD943751S1 (en) 2018-04-11 2022-02-15 Johnson & Johnson Consumer Inc. Adhesive bandage with decorated pad
USD943750S1 (en) 2018-04-11 2022-02-15 Johnson & Johnson Consumer Inc. Adhesive bandage with decorated pad
USD879973S1 (en) 2018-04-11 2020-03-31 Johnson & Johnson Consumer Inc. Adhesive bandage with decorated pad
USD880705S1 (en) 2018-04-11 2020-04-07 Johnson & Johnson Consumer Inc. Adhesive bandage with decorated pad
USD959679S1 (en) 2018-04-11 2022-08-02 Johnson & Johnson Consumer Inc. Adhesive bandage with decorated pad
USD959678S1 (en) 2018-04-11 2022-08-02 Johnson & Johnson Consumer Inc. Adhesive bandage with decorated pad
USD959680S1 (en) 2018-04-11 2022-08-02 Johnson & Johnson Consumer Inc. Adhesive bandage with decorated pad
USD879972S1 (en) 2018-04-11 2020-03-31 Johnson & Johnson Consumer Inc. Adhesive bandage with decorated pad
USD943749S1 (en) 2018-04-11 2022-02-15 Johnson & Johnson Consumer Inc. Adhesive bandage with decorated pad
USD950070S1 (en) 2018-06-27 2022-04-26 Johnson & Johnson Consumer Inc. Adhesive bandage with decorated pad
USD887563S1 (en) 2018-06-27 2020-06-16 Johnson & Johnson Consumer Inc. Adhesive bandage with decorated pad
USD949347S1 (en) 2018-06-27 2022-04-19 Johnson & Johnson Consumer Inc. Adhesive bandage with decorated pad
USD949348S1 (en) 2018-06-27 2022-04-19 Johnson & Johnson Consumer Inc. Adhesive bandage with decorated pad
USD879974S1 (en) 2018-06-27 2020-03-31 Johnson & Johnson Consumer Inc. Adhesive bandage with decorated pad
USD950740S1 (en) 2018-06-27 2022-05-03 Johnson & Johnson Consumer Inc. Adhesive bandage with decorated pad
USD952866S1 (en) 2018-06-27 2022-05-24 Johnson & Johnson Consumer Inc. Adhesive bandage with decorated pad
USD952867S1 (en) 2018-06-27 2022-05-24 Johnson & Johnson Consumer Inc. Adhesive bandage with decorated pad
USD961783S1 (en) 2018-06-27 2022-08-23 Johnson & Johnson Consumer Inc. Adhesive bandage with decorated pad
USD879975S1 (en) 2018-06-27 2020-03-31 Johnson & Johnson Consumer Inc. Adhesive bandage with decorated pad
USD887564S1 (en) 2018-06-27 2020-06-16 Johnson & Johnson Consumer Inc. Adhesive bandage with decorated pad
USD961092S1 (en) 2018-06-27 2022-08-16 Johnson & Johnson Consumer Inc. Adhesive bandage with decorated pad
USD913507S1 (en) 2018-12-10 2021-03-16 Johnson & Johnson Consumer Inc. Adhesive bandage with decorated pad
USD1049392S1 (en) 2018-12-10 2024-10-29 Johnson & Johnson Consumer Inc. Adhesive bandage with decorated pad
USD1052737S1 (en) 2018-12-10 2024-11-26 Johnson & Johnson Consumer Inc. Adhesive bandage with decorated pad
USD1054568S1 (en) 2018-12-10 2024-12-17 Johnson & Johnson Consumer Inc. Adhesive bandage with decorated pad
USD1059601S1 (en) 2018-12-10 2025-01-28 Kenvue Brands Llc Adhesive bandage with decorated pad
USD1059602S1 (en) 2018-12-10 2025-01-28 Kenvue Brands Llc Adhesive bandage with decorated pad
USD918398S1 (en) 2018-12-10 2021-05-04 Johnson & Johnson Consumer Inc. Adhesive bandage with decorated pad

Also Published As

Publication number Publication date
EP0136594B1 (fr) 1988-12-07
AU571001B2 (en) 1988-03-31
DE3475583D1 (en) 1989-01-12
US4546339A (en) 1985-10-08
AU3255084A (en) 1985-04-18
EP0136594A3 (fr) 1985-06-26
DE3336011A1 (de) 1985-04-18
JPS6080206A (ja) 1985-05-08
JPH045242B2 (fr) 1992-01-30

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