EP2586042B1 - Réduction au maximum du rebondissement lors de la fermeture d'une armature par l'intermédiaire d'un élément de temporisation dans l'interstice d'air résiduel - Google Patents

Réduction au maximum du rebondissement lors de la fermeture d'une armature par l'intermédiaire d'un élément de temporisation dans l'interstice d'air résiduel Download PDF

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Publication number
EP2586042B1
EP2586042B1 EP11721305.8A EP11721305A EP2586042B1 EP 2586042 B1 EP2586042 B1 EP 2586042B1 EP 11721305 A EP11721305 A EP 11721305A EP 2586042 B1 EP2586042 B1 EP 2586042B1
Authority
EP
European Patent Office
Prior art keywords
residual air
air gap
solenoid valve
magnet
armature
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.)
Active
Application number
EP11721305.8A
Other languages
German (de)
English (en)
Other versions
EP2586042A1 (fr
Inventor
Jens Leister
Matthias Horn
Andreas Rettich
Florian Hoffmann
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 EP2586042A1 publication Critical patent/EP2586042A1/fr
Application granted granted Critical
Publication of EP2586042B1 publication Critical patent/EP2586042B1/fr
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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
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • F02M63/0017—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • F02M63/0017—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means
    • F02M63/0021—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means characterised by the arrangement of mobile armatures
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
    • F02M63/0073—Pressure balanced valves
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
    • F02M63/0075—Stop members in valves, e.g. plates or disks limiting the movement of armature, valve or spring
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/02—Fuel-injection apparatus having means for reducing wear
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/03—Fuel-injection apparatus having means for reducing or avoiding stress, e.g. the stress caused by mechanical force, by fluid pressure or by temperature variations
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/31—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements
    • 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
    • H01F2007/1661—Electromagnets or actuators with anti-stick disc

Definitions

  • the invention relates to a solenoid valve having a magnetic group having a magnetic coil and a magnetic core consisting of a Magnetkerninnenpol and a Magnetkernau hybridpol, and with an anchor plate and an anchor bolt, further formed by a residual air gap stop in the region of a front side of the magnetic core, wherein further between the Anchor plate and the magnet group is a residual air gap.
  • This solenoid valve is out of the DE 10 2009 003 213 A1 known.
  • This solenoid valve has a residual air gap disk, which is fixed by frictional connection at Einklemmstellen on the armature plate assigning front side of the magnetic core adjacent to a magnet sleeve.
  • the residual air gap disc is made of a ferromagnetic or non-magnetic material, such as a metallic foil, with a simple geometry. By fixing the residual air gap disc at pinch points by traction, the residual air gap disc is installed after mounting the magnet assembly and before injector mounting, the entire assembly process is not disturbed and is therefore simplified.
  • the residual air gap disc has projecting tongues, which are bent up during the installation process at the Einklemmstellen. In addition to the tongues and on the outer circumference of the residual air gap, a gap remains to the magnet sleeve. Similar solenoid valves are also off WO 03/002868 A1 and DE 198 02 244 A1 known.
  • the invention has for its object to achieve a minimization of Ankerscharteriesprellens.
  • Such a configuration is used in particular for fuel injectors for common rail systems with pressure-balanced solenoid valve, which allow a system pressure of about 2200 bar.
  • a pressure balanced solenoid valve has a residual air gap disc to produce a residual air gap in the open state at the upper stroke stop, which should allow a quick closing of the armature.
  • the problem is the anchor bounce and remindönsensitterrorism, these properties can occur especially in a multiple injection.
  • the outer residual air gap for inflowing medium in the form of fuel is free, so that pressure forces from the armature space at any time reach the anchor plate top and affect the closing and bouncing behavior. This property is at least substantially reduced by the embodiment according to the invention.
  • the described residual air gap is closed by the residual air gap disk interacting with the magnetic core outer pole, a magnet sleeve comprising the magnetic group and the armature plate.
  • the residual air gap disk is a circular disk.
  • the annular disc formed in this way is not, as in the prior art fixed to the anchor plate, but according to this general embodiment in Ankerhubides floating between the armature plate and the Magnetkernau builtpol arranged.
  • the residual air gap disk is positioned only at the outer diameter over the magnet sleeve in the radial direction.
  • the inner diameter of the annular disc is selected so that on the one hand no excessive hydraulic bonding of the anchor plate takes place and on the other hand there is a sufficient closure of the outer residual air gap.
  • this closure can be done by a shoulder in the anchor plate or alternatively in the Magnetkernau presentpol.
  • the residual air gap disk is arranged only in the center of the magnet group and designed with a correspondingly smaller diameter.
  • this smaller residual air gap disc is also formed as a circular disk with or without webs.
  • the residual air gap disk is preferably made of a non-magnetic material.
  • FIG. 3 an embodiment of the claimed invention is in FIG. 3 shown.
  • the magnet group 2 has a magnetic core inner pole 3 and a magnetic core outer pole 4, between which a magnetic coil 5 is embedded.
  • the magnet group 2 is arranged in total in a magnet sleeve 6.
  • the front side of the Magnetkerninnenpols 3 and the Magnetkernau combinpols 4 opposite is an anchor plate 7, in which a central passage opening is recessed and in which an anchor bolt 9 is inserted.
  • the armature seat of the armature plate 7 closes a control room under fuel system pressure or relieves the control chamber in the valve chamber.
  • the valve chamber is interconnected via a connecting line with the control room. Due to the switching positions of the valve, the control chamber is pressurized or depressurized.
  • the control chamber further cooperates with a valve needle of the fuel injector, which is axially displaced due to the different pressures in the control chamber and in an open position injection openings in the fuel injector releases flows through the (under system pressure) fuel in the associated combustion chamber of an internal combustion engine.
  • the anchor bolt 9 protrudes through a central opening 10 of the Magnetkerninnenpols 3 and is surrounded in this area by a valve spring 11.
  • the valve spring 11 is supported on a cover, not shown, of the magnet sleeve 6 and exerts a compressive force on the armature plate 7, which is thus moved away from the magnetic group 2.
  • the anchor plate 7 can only be moved so far in the direction of the magnet group 2 until it rests against a arranged between the magnetic group 2 and the anchor plate 7 residual air gap disc 12.
  • the residual air gap disk 12 bears sealingly against the magnet sleeve 6 and prevents any subsequent flow of fuel through the gap 13 existing between the armature plate 7 and the magnetic sleeve 6 into a residual air gap 18. This embodiment avoids seat bounce of the armature plate 7 moved toward the magnet group 2.
  • the residual air gap plate 12 is shown in a plan view, wherein in this embodiment, the residual air gap disk 12 is formed as a circular disk 14.
  • the one in the upper picture of the Fig. 2 illustrated cross section through the solenoid valve 1 shown simplified corresponds to the illustration according to Fig. 1 ,
  • the annular disc 14 is, instead of fixed on the anchor plate 7, in Ankerhubides free floating between the armature plate 7 and the Magnetkernau touchpol 4.
  • the annular disc 14 is positioned only on the outer diameter of the magnet sleeve 6 in the radial direction.
  • the inner diameter of the annular disc 14 is chosen so that on the one hand no excessive hydraulic bonding of the anchor plate 7 takes place and on the other hand there is a sufficient closure of the outer residual air gap 18.
  • the residual air gap disc 12 is also formed as a circular ring disk 14 'and has additional internal webs 15 which are connected to each other in the center of the annular disk 14'.
  • a bore 16 is embedded in this central region.
  • FIG. 3 shows the corresponding cross section through the corresponding solenoid valve. 1
  • the anchor plate 7 ' has a shoulder 17 which closes the gap between Magnetkernau touchpol 4 and anchor plate 7'.
  • the shoulder 17 in the anchor plate 7 ' must be less than the thickness of the residual air gap disc, so that the stop takes place via the residual air gap disc.
  • the shoulder 17 may also be designed in one piece with the magnet group 2, in particular the magnetic core outer pole 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Magnetically Actuated Valves (AREA)
  • Electromagnets (AREA)

Claims (8)

  1. Électrovanne (1), comprenant un groupe magnétique (2), qui présente une bobine magnétique (5) et un noyau magnétique constitué d'un pôle interne de noyau magnétique (3) et d'un pôle externe de noyau magnétique (4), et comprenant une plaque d'induit (7, 7') ainsi qu'un boulon d'induit (9), et présentant en outre une butée formée par un disque à entrefer résiduel (12) dans la région d'un côté frontal du noyau magnétique, un entrefer résiduel (18) existant en outre entre la plaque d'induit (7) et le groupe magnétique (2), l'entrefer résiduel (18) étant fermé dans la direction radiale entre le pôle externe de noyau magnétique (4) et le diamètre extérieur de la plaque d'induit (7), caractérisée en ce que le disque à entrefer résiduel (12) est un disque annulaire circulaire (14'), le disque annulaire circulaire (14') présentant des nervures intérieures (15) qui sont connectées les unes aux autres au centre du disque annulaire circulaire (14').
  2. Électrovanne selon la revendication 1, caractérisée en ce que l'entrefer résiduel (18) est fermé pour empêcher un afflux de carburant.
  3. Électrovanne selon la revendication 1 ou 2, caractérisée en ce que le disque d'entrefer résiduel (12) ferme l'entrefer résiduel (18) en coopérant avec le pôle externe de noyau magnétique (4), une douille magnétique (6) entourant le groupe magnétique (2) et la plaque d'induit (7).
  4. Électrovanne selon l'une quelconque des revendications 1 à 3, caractérisée en ce qu'un alésage (16) est réalisé au centre du disque annulaire circulaire (14').
  5. Électrovanne selon l'une quelconque des revendications 1 à 4, caractérisée en ce que quatre nervures (15) sont prévues.
  6. Électrovanne selon l'une quelconque des revendications précédentes, caractérisée en ce que l'entrefer résiduel (18) est fermé par un épaulement (17) au niveau de la plaque d'induit (7, 7') coopérant avec le pôle externe de noyau magnétique (4) et avec une douille magnétique (6) entourant le groupe magnétique (2).
  7. Électrovanne selon l'une quelconque des revendications 1 à 5, caractérisée en ce que l'entrefer résiduel (18) est fermé par un épaulement au niveau du pôle externe de noyau magnétique (4) coopérant avec la plaque d'induit (7) et avec une douille magnétique (6) entourant le groupe magnétique (2).
  8. Électrovanne selon l'une quelconque des revendications précédentes, caractérisée en ce que le disque d'entrefer résiduel (12) est fabriqué en un matériau non magnétique.
EP11721305.8A 2010-06-28 2011-05-24 Réduction au maximum du rebondissement lors de la fermeture d'une armature par l'intermédiaire d'un élément de temporisation dans l'interstice d'air résiduel Active EP2586042B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201010030600 DE102010030600A1 (de) 2010-06-28 2010-06-28 Minimierung des Ankerschließprellens durch ein Verzögerungsglied im Restluftspalt
PCT/EP2011/058405 WO2012000721A1 (fr) 2010-06-28 2011-05-24 Réduction au maximum du rebondissement lors de la fermeture d'une armature par l'intermédiaire d'un élément de temporisation dans l'interstice d'air résiduel

Publications (2)

Publication Number Publication Date
EP2586042A1 EP2586042A1 (fr) 2013-05-01
EP2586042B1 true EP2586042B1 (fr) 2018-08-15

Family

ID=44358047

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11721305.8A Active EP2586042B1 (fr) 2010-06-28 2011-05-24 Réduction au maximum du rebondissement lors de la fermeture d'une armature par l'intermédiaire d'un élément de temporisation dans l'interstice d'air résiduel

Country Status (6)

Country Link
EP (1) EP2586042B1 (fr)
JP (1) JP5638130B2 (fr)
CN (1) CN102959649B (fr)
DE (1) DE102010030600A1 (fr)
RU (1) RU2592637C2 (fr)
WO (1) WO2012000721A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012205365A1 (de) 2012-04-02 2013-10-02 Robert Bosch Gmbh Anordnung umfassend eine Magnetbaugruppe und einen hubbeweglichen Anker
DE102012209175A1 (de) * 2012-05-31 2013-12-05 Robert Bosch Gmbh Magnetbaugruppe für ein Magnetventil
FR2991728B1 (fr) * 2012-06-08 2016-04-29 Bosch Gmbh Robert Soupape electromagnetique de systeme d'injection de carburant
DE102012224240A1 (de) 2012-12-21 2014-06-26 Robert Bosch Gmbh Magnetventil und Verfahren zum Herstellen eines Magnetventils
DE102013212238A1 (de) * 2013-06-26 2014-12-31 Robert Bosch Gmbh Magnetventil und Kraftstoffinjektor mit einem solchen Magnetventil
DE102013219439A1 (de) 2013-09-26 2014-11-27 Continental Automotive Gmbh Ventileinrichtung für eine Hochdruckpumpe
DE102015212130A1 (de) * 2015-06-30 2017-01-05 Robert Bosch Gmbh Magnetbaugruppe und Kraftstoffinjektor mit einer Magnetbaugruppe
DE102016207989A1 (de) 2016-05-10 2017-11-16 Robert Bosch Gmbh Vorrichtung, umfassend eine Magnetbaugruppe und einen hubbeweglichen Magnetanker, sowie Verfahren zur Herstellung der Vorrichtung
DE102016218515A1 (de) * 2016-09-27 2018-03-29 Robert Bosch Gmbh Verfahren zur Steuerung von schaltbaren Ventilen, insbesondere von Einspritzventilen einer Brennkraftmaschine eines Kraftfahrzeugs
JP7350423B2 (ja) * 2018-09-13 2023-09-26 イーグル工業株式会社 ソレノイド装置

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Publication number Priority date Publication date Assignee Title
DE2936853A1 (de) * 1979-09-12 1981-04-02 Robert Bosch Gmbh, 7000 Stuttgart Elektromagnetisch betaetigbares ventil
DE19802244A1 (de) * 1998-01-22 1999-07-29 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen
SE9801588D0 (sv) * 1998-05-05 1998-05-05 Swiss Fed Inst Of Tech Zuerich Electromagnetic valve for gaseous fluids
DE19850071A1 (de) * 1998-10-30 2000-05-04 Bayer Ag Membran-Elektrolysezelle mit aktiver Gas-/Flüssigkeitstrennung
DE10131199A1 (de) * 2001-06-28 2003-01-16 Bosch Gmbh Robert Magnetventil zur Steuerung eines Einspritzventils einer Brennkraftmaschine
DE102008040073A1 (de) 2008-07-02 2010-01-07 Robert Bosch Gmbh Luftspaltbegrenzung bei Magnetventil
DE102009003213A1 (de) * 2009-05-19 2010-11-25 Robert Bosch Gmbh Restluftspaltscheibe

Non-Patent Citations (1)

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Title
None *

Also Published As

Publication number Publication date
DE102010030600A1 (de) 2011-12-29
WO2012000721A1 (fr) 2012-01-05
JP5638130B2 (ja) 2014-12-10
JP2013536376A (ja) 2013-09-19
RU2592637C2 (ru) 2016-07-27
CN102959649A (zh) 2013-03-06
CN102959649B (zh) 2016-08-17
RU2013103421A (ru) 2014-09-10
EP2586042A1 (fr) 2013-05-01

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