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WO2012168077A1 - Induit pour électrovanne et procédé de fabrication d'un induit - Google Patents

Induit pour électrovanne et procédé de fabrication d'un induit Download PDF

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Publication number
WO2012168077A1
WO2012168077A1 PCT/EP2012/059595 EP2012059595W WO2012168077A1 WO 2012168077 A1 WO2012168077 A1 WO 2012168077A1 EP 2012059595 W EP2012059595 W EP 2012059595W WO 2012168077 A1 WO2012168077 A1 WO 2012168077A1
Authority
WO
WIPO (PCT)
Prior art keywords
armature
armature shaft
plate
anchor
shaft
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.)
Ceased
Application number
PCT/EP2012/059595
Other languages
German (de)
English (en)
Inventor
Keir Foster
Arne Huber
Marco Beier
Ivan Spremo
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 WO2012168077A1 publication Critical patent/WO2012168077A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/008—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of engine cylinder parts or of piston parts other than piston rings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
    • B22F7/08—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
    • 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
    • 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
    • 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
    • F02M2200/90—Selection of particular materials
    • F02M2200/9053—Metals
    • 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
    • F02M2200/90—Selection of particular materials
    • F02M2200/9092—Sintered materials

Definitions

  • the invention relates to an armature for a solenoid valve, in particular for
  • Fuel injection valves of air-compressing, self-igniting internal combustion engines is used, and a method for producing such an armature.
  • a fuel injector with a pressure balanced control valve is known.
  • the injector serves to inject fuel into a combustion chamber of an internal combustion engine.
  • an injection valve member is an injection valve member
  • Injection valve member is driven by a control valve, wherein the control valve releases or closes a connection from a control chamber into a fuel return.
  • the control valve is controlled by a magnetic circuit.
  • a magnetic field is formed which acts on an armature.
  • the anchor in this case a bore is formed, in which a valve needle is guided.
  • the armature is followed by a sleeve, which serves as a guide for the valve needle.
  • the armature is accommodated in an armature space, in which the fuel flows out of a control chamber when the control valve is open. From the armature space, the fuel enters the return line.
  • the solenoid is energized.
  • the magnetic field then pulls the armature in the direction of the magnetic core.
  • the valve needle is moved together with the armature in the direction of the magnetic core.
  • From the control chamber can then flow under system pressure fuel via an outlet throttle in the armature space and thus to the return. This causes the pressure in the control room to decrease.
  • an opening force is exerted and the control piston moves in the
  • the armature according to the invention with the features of claim 1, the fuel injection valve according to the invention with the features of claim 6 and the inventive method with the features of claim 7 have the advantage that an improved design is possible, in particular an economical production for a wide range of applications possible is.
  • the cohesive connection between the armature plate and the armature shaft is formed at least substantially over the entire joining surface between the armature plate and the armature shaft.
  • connection methods are conceivable in which substantially point- or line-shaped substance connections are configured. This is possible, for example, in welding or soldering processes.
  • a cohesive connection can be realized on the entire joint surface, without thereby increasing the production cost.
  • pressure compensated switching valve can be realized.
  • non-pressure compensated servo valves can be realized.
  • valves for injectors or other applications can be realized.
  • magnetic actuators can be created, which serve as a direct switch without servo function.
  • the magnetic material of the anchor plate made of iron and / or silicon and / or phosphorus is formed.
  • the magnetic material may also have a high silicon content.
  • Such an alloy of iron and cobalt can be predetermined without additional alloying elements.
  • the joining of this also comparatively brittle material can also be realized by sintering.
  • the armature shaft is formed of a material having a high carbide content.
  • ceramics, hard metals and cermets as materials for the armature shaft and phosphorus-containing metals as materials for the armature.
  • the green part of a bore in particular a through hole or blind hole, is configured and that an inner diameter of the bore of the green part is set greater than an outer diameter of the arranged in the bore anchor shaft in the region of the bore. Since the green part shrinks during sintering, can by specifying a certain Game targeted a preferably small oversize are generated, which degrades during sintering by a plastic deformation of the anchor plate. After the formation of a contact between the material of the armature shaft and the material of the plate sets a diffusion exchange between the two materials, whereby a cohesive connection is formed. As a result, a high shear strength of the joining zone is achieved. Another advantage is that the sintering and joining in one
  • Process step can take place. This reduces the process costs.
  • a positive connection is formed in addition to a joining surface between the armature shaft and the armature plate in at least one direction along an axis of the armature shaft.
  • the shear strength at the joining zone or joining surface can be further improved.
  • the mechanical strength of the shear strength can be further increased. It is also advantageous in this case that the armature shaft at the joining surface between the
  • Anchor shaft and the anchor plate has at least one projection.
  • a projection may for example be designed pin-shaped and radially to the axis of the
  • Anchorage extend.
  • the green part is composed of at least two partial plates, in particular two half-plates, which are positioned on both sides on the projection of the armature shaft.
  • the partial plates can be pre-pressed and then positioned on the armature shaft. This simplifies the manufacture of the anchor.
  • this can be given a certain clearance between the green part of the sub-plates and the armature shaft, which leads to a desired excess due to the sintering shrinkage.
  • Fig. 1 is a fuel injection valve in an excerpt, schematic
  • FIG. 2 shows an excerpt, schematic representation of an armature for the fuel injection valve shown in FIG. 1 according to a first possible embodiment of the invention
  • FIG. Fig. 3 shows the anchor shown in Fig. 2 according to a second possible
  • FIG. 4 shows the anchor shown in Figure 2 according to a third possible embodiment of the invention ..;
  • Fig. 5 shows the anchor shown in Fig. 2 according to a fourth possible
  • Fig. 6 shows the anchor shown in Fig. 2 according to a fifth possible
  • Fig. 8 shows the anchor shown in Fig. 2 according to a seventh possible
  • Fig. 1 shows an embodiment of a fuel injection valve 1 of the invention in a partial, schematic sectional view.
  • the fuel injection valve 1 is particularly suitable for fuel injection systems of air-compressing, self-igniting internal combustion engines.
  • the fuel injection valve 1 is suitable for a
  • Direct injection are injected at the diesel or similar fuels under high pressure in the combustion chamber of an internal combustion engine.
  • the fuel which serves as a hydraulic medium, for example, with a pressure of up to 250 MPa (2500 bar) are injected into the combustion chamber.
  • the fuel injection valve 1 is also suitable for other applications.
  • the fuel injection valve 1 has a solenoid valve 2 with an armature 3.
  • the armature 3 comprises an armature shaft 4 and an armature plate 5.
  • the solenoid valve 2 has a magnet pot 6 which receives a magnetic coil 7.
  • the fuel injection valve 1 further comprises a nozzle needle 8, which in a
  • Fuel chamber 9 is arranged.
  • the nozzle needle 8 comprises a valve closing body 10, which cooperates with a valve seat surface 1 1 to a sealing seat.
  • Nozzle needle 8 lifts from its seat on the valve seat surface 1 1, then fuel from the Fuel chamber 9 are injected via one or more nozzle bores 12 in the combustion chamber of an internal combustion engine.
  • the actuation of the nozzle needle 8 is not directly from the solenoid valve 2, but indirectly via a hydraulic control, as indicated by the double arrow. 13
  • Solenoid valve 2 locked again, so that there is a control of the nozzle needle 8 in a known manner.
  • the nozzle needle 8 may be surrounded in the open state of substantially equal pressure, so that there is a force-balanced situation, while in the closed state, a closing force results on the nozzle needle 8, resulting from the hydraulic pressure and the cross section of the sealing seat of the nozzle needle. 8 determined and which may typically be in the range of a few hundred Newton.
  • Working air gap 15 excited magnetic field.
  • the magnetic force generated in this way is particularly large when the working air gap 15 is small.
  • Starting from a normally open state increases in particular the force in the course of the working path. Since the hydraulic force balance begins only in the course of the movement, the power requirement in the first moment of opening is maximum. That is, the largest power requirement occurs at the time in which the magnetic force is inherently minimal.
  • Nozzle needle 8 opened by hydraulic forces, which significantly reduces the power requirement.
  • the solenoid valve 2 preferably has a flat armature 3 with an at least substantially flat armature surface 16.
  • the flat armature 3 is thereby configured as a flat armature 3.
  • the magnet pot 6 has an inner pole.
  • the armature 3 closes over the Working air gap 15 in the actuated state, the magnetic circuit. As a result, the actuation of the solenoid valve 2.
  • An embodiment as a solenoid plunger is possible.
  • the armature shaft 4 of the armature 3 fulfills several functions. First, the armature 3 is guided over the length of the armature shaft 4 and secondly, a lower portion 17 of the armature shaft 4 closes the solenoid valve 2. The requirements for wear and
  • Impact resistance of the armature shaft 4 are therefore very high.
  • the magnetic circuit of the magnetic actuator 6 ' is closed.
  • the requirements for the magnetic properties of the material of the anchor plate 5 are therefore particularly high. This relates in particular to a saturation polarization and a specific resistance of the anchor plate 5.
  • anchor plate 5 is to be understood generally.
  • the anchor plate 5 may be embodied in different geometries, for example, depending on the magnetic and hydraulic requirements or boundary conditions.
  • the armature 3 is made of two different materials.
  • the armature shaft 4 is made of a material selected with respect to the desired strength.
  • the magnetic material of the anchor plate 5, however, is selected with respect to the magnetic requirements.
  • the design of at least two materials, a mechanically outstanding material for the armature shaft 4 and a magnetically outstanding material for the anchor plate 5 are used.
  • the armature 3 is assembled by a mechanical joining method of two parts, namely an armature shaft and an anchor plate.
  • such a connection for example by peeling rivets, leads to new ones
  • the manufacture of the armature 3 is therefore carried out by connecting the anchor plate 5 with the armature shaft 4 by sintering. In this case, a cohesive connection between the anchor plate 5 and the armature shaft 4 is achieved. This results in a joining surface 18 between the armature shaft 4 and the anchor plate 5, which by sintering in
  • the term of the joining surface 18 is to be understood in this case in general and also includes a zonal configuration (joining zone) or a regional design (joining region) of the sintered bond. Because during the sintering process, there is the diffusion exchange between the two materials.
  • FIG. 2 shows a partial, schematic representation of an armature 3 for a
  • Solenoid valve 2 of a fuel injection valve 1 according to a first possible embodiment of the invention.
  • the armature shaft 4 is designed cylindrical in this case for simplicity.
  • the armature shaft 4 is shown as a solid armature shaft 4 without holes.
  • the armature shaft 4 may also have other geometries and holes. Specifically, axial bores may be provided which extend along an axis 20 of the armature shaft 4 of the armature 3 through the armature shaft 4.
  • the already sintered or melt metallurgically produced armature shaft 4 and a powder metallurgically produced, in particular pressed, green part 5 'for the anchor plate 5 are used. Both parts 4, 5 'can in this case already have a suitable for the fulfillment of the function contour, whereby reworking can be minimized depending on the required tolerances or even completely saved.
  • the green part 5 'for the anchor plate 5 has in this embodiment, designed as a through hole 21 bore 21. Through this bore 21 of the armature shaft is the fourth
  • the armature shaft 4 is hereby preferably with little play in the bore 21st inserted.
  • An inner diameter 22 of the bore 21 is here given slightly larger than an outer diameter 23 of the armature shaft 4 in the region of the bore 21st During the subsequent sintering shrinks the green part 5 'for the anchor plate 5 on the
  • Anchor shaft 4 on. The sintering shrinkage and the initial play between the
  • Anchor plate 5 uses a diffusion exchange between the two materials, whereby a cohesive connection to the joint surface 18 is formed. As a result, a high shear strength of the joining zone 18 is achieved.
  • the two-part armature 3 may optionally be mechanically reworked depending on the required tolerances. If necessary, hardening and tempering is possible. Thus, a tempering can be done.
  • For the anchor shaft 4 are mainly materials that a high
  • Ceramic materials in particular ZrO 2, hard metals and so-called cermets meet these criteria and are therefore examples of suitable materials for the armature shaft 4. It is also possible to choose wear-resistant steels, in particular tool steels or high-speed steels, as a material for the armature shaft 4, according to can be locally cured or through-hardened Sinterglagerind.
  • the magnetic material for the anchor plate 5 may be based on an alloy of iron and silicon, an alloy of iron, silicon and phosphorus, an alloy of iron and chromium or an alloy of iron and cobalt or an alloy of iron and phosphorus.
  • the bore 21 is cylindrical.
  • the armature shaft 4 is designed cylindrical.
  • Fig. 3 shows the armature 3 shown in Fig. 2 according to a second possible embodiment of the invention.
  • the armature shaft 4 has a taper 25, which is formed by a circumferential annular groove 25.
  • Outer diameter 23 of the armature shaft 4 in the region of the bore 21 is thereby smaller than an outer diameter 26 of the armature shaft 4 in the remaining area.
  • Inner diameter 22 of the bore 21 may be slightly larger than that
  • Outside diameter 26 may be selected. This allows a joining together. In the subsequent sintering results in addition to the cohesive connection and a positive connection.
  • the taper 25 is preferably for this purpose as low
  • Rejuvenation 25 is formed.
  • Fig. 4 shows the armature 3 shown in Fig. 2 according to a third possible embodiment of the invention.
  • the shear strength of the joining zone 18 is further increased by a mechanical toothing 27.
  • the mechanical toothing 27 may be configured for example by a thread. It is possible that the green part 5 'is screwed onto a threaded portion of the armature shaft 4 before sintering. In this case, it is also possible for the inner diameter 22 of the green part 5 'to be greater than the outer diameter 23 of the armature shaft 4. Depending on the configuration, however, the mechanical toothing 27 can also be designed without play before the sintering.
  • Fig. 5 shows the armature 3 shown in Fig. 2 according to a fourth possible embodiment of the invention.
  • the armature shaft 4 has a conical section 28.
  • the bore 21 is also conical and adapted in shape to the conical portion 28 of the armature shaft 4.
  • the conical joining zone 18 results in a mechanical support of the anchor plate 5 relative to the armature shaft 4 in a direction 29 along the axis 20. This can on the one hand facilitate the joining and thus the implementation of the sintering process. On the other hand, this can ensure an additional positive connection.
  • Fig. 6 shows the armature 3 shown in Fig. 2 according to a fifth possible embodiment of the invention.
  • the bore 21 as
  • This embodiment is particularly suitable for a plunger-armature geometry.
  • Fig. 7 shows the armature 3 shown in Fig. 2 according to a sixth possible embodiment of the invention.
  • the armature shaft 4 has one or more projections 31.
  • the projection 31 may be configured as a web-shaped projection 31, which preferably extends in the radial direction with respect to the axis 20.
  • the projection 31 may in particular be designed as a pin-shaped projection.
  • the projection 31 may also be formed by a circumferential collar 31.
  • other embodiments are conceivable.
  • the starting material in particular a powder for the starting material
  • the starting material to be pressed around the armature shaft 4 in the region of the projection 31. Subsequently, the sintering takes place.
  • Fig. 8 shows the armature 3 shown in Fig. 2 according to a seventh possible embodiment of the invention.
  • two half-plates 32, 33 are provided to form the green part 5 '.
  • the half plates 32, 33 can first be positioned as pre-pressed green compacts on the armature shaft 4.
  • one of the two ends of the armature shank 4 can be used
  • Sub-panels 32, 33 are joined to the armature shaft 4, so that the projection 31 and the plurality of projections 31 on both sides of the projection 31 include. Subsequently, the sintering to the green part 5 'for the anchor plate 5 with the
  • Armature shaft 4 to connect.
  • the half-plates 32, 33 are configured the same.
  • half-plates 32, 33 can be configured with an inner diameter 22 of the bore 21 without additional effort, which is larger than the outer diameter 23 of the armature shaft 4 in the region of the projection 31.
  • any desired cross-sectional geometries of the joining zones 18 can be predetermined.
  • the cohesive connection without an intermediate layer, such as a soldering material, an adhesive or a weld, between the armature shaft 4 and the anchor plate 5 are configured, yet a cohesive connection is realized. This plastic deformation, as they occur for example in a peel, can be avoided.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

L'invention concerne un induit (3) destiné à une électrovanne (2) et comprenant un axe d'induit (4) et une plaque d'induit (5). En particulier, l'électrovanne (2) peut être utilisée pour une soupape d'injection de carburant d'un moteur à combustion interne à compression d'air et autoallumage. La plaque d'induit (5) est constituée d'un matériau magnétique. En outre, la plaque d'induit (5) et l'axe d'induit (4) sont reliés l'un à l'autre par liaison de matière par frittage. En outre, l'invention concerne un procédé de fabrication d'un tel induit (3).
PCT/EP2012/059595 2011-06-08 2012-05-23 Induit pour électrovanne et procédé de fabrication d'un induit Ceased WO2012168077A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201110077179 DE102011077179A1 (de) 2011-06-08 2011-06-08 Anker für ein Magnetventil und Verfahren zur Herstellung eines Ankers
DE102011077179.4 2011-06-08

Publications (1)

Publication Number Publication Date
WO2012168077A1 true WO2012168077A1 (fr) 2012-12-13

Family

ID=46149456

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/059595 Ceased WO2012168077A1 (fr) 2011-06-08 2012-05-23 Induit pour électrovanne et procédé de fabrication d'un induit

Country Status (2)

Country Link
DE (1) DE102011077179A1 (fr)
WO (1) WO2012168077A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109192611A (zh) * 2018-10-09 2019-01-11 陕西群力电工有限责任公司 一种衔铁轴车削工装

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013211294A1 (de) * 2013-06-17 2014-12-18 Robert Bosch Gmbh Anker für ein Magnetventil
DE102014201097A1 (de) * 2014-01-22 2015-07-23 Robert Bosch Gmbh Verfahren zur Herstellung eines Magnetventils
DE102015213141A1 (de) 2015-07-14 2017-01-19 Robert Bosch Gmbh Schaltventil für einen Kraftstoffinjektor sowie Kraftstoffinjektor
DE102015223167A1 (de) 2015-11-24 2017-05-24 Robert Bosch Gmbh Schaltventil für einen Kraftstoffinjektor sowie Kraftstoffinjektor
DE102016209813A1 (de) * 2016-06-03 2017-12-07 Robert Bosch Gmbh Magnetventil und Kraftstoffinjektor mit einem Magnetventil
DE102018212624A1 (de) * 2018-07-27 2020-01-30 Rolls-Royce Deutschland Ltd & Co Kg Verfahren zur Herstellung eines Bauteils für eine Turbomaschine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19958574A1 (de) * 1999-12-04 2001-06-07 Fev Motorentech Gmbh Verfahren zur Herstellung eines wirbelstromarmen Ankers für einen elektromagnetischen Aktuator
EP1517341A2 (fr) * 2003-09-17 2005-03-23 Denso Corporation Actionneur électromagnétique, procédé de son fabrication et soupape d?injection de carburant
EP1667177A1 (fr) * 2003-09-17 2006-06-07 Hitachi Powdered Metals Co., Ltd. Mandrin de metal mobile fritte et son procede de fabrication
DE102006021741A1 (de) 2006-05-10 2007-11-15 Robert Bosch Gmbh Kraftstoffinjektor mit druckausgeglichenem Steuerventil
WO2010066536A1 (fr) * 2008-12-12 2010-06-17 Schaeffler Technologies Gmbh & Co. Kg Élément d'actionnement d'une unité de commande électromagnétique d'une soupape hydraulique

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19958574A1 (de) * 1999-12-04 2001-06-07 Fev Motorentech Gmbh Verfahren zur Herstellung eines wirbelstromarmen Ankers für einen elektromagnetischen Aktuator
EP1517341A2 (fr) * 2003-09-17 2005-03-23 Denso Corporation Actionneur électromagnétique, procédé de son fabrication et soupape d?injection de carburant
EP1667177A1 (fr) * 2003-09-17 2006-06-07 Hitachi Powdered Metals Co., Ltd. Mandrin de metal mobile fritte et son procede de fabrication
DE102006021741A1 (de) 2006-05-10 2007-11-15 Robert Bosch Gmbh Kraftstoffinjektor mit druckausgeglichenem Steuerventil
WO2010066536A1 (fr) * 2008-12-12 2010-06-17 Schaeffler Technologies Gmbh & Co. Kg Élément d'actionnement d'une unité de commande électromagnétique d'une soupape hydraulique

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109192611A (zh) * 2018-10-09 2019-01-11 陕西群力电工有限责任公司 一种衔铁轴车削工装
CN109192611B (zh) * 2018-10-09 2023-08-18 陕西群力电工有限责任公司 一种衔铁轴车削工装

Also Published As

Publication number Publication date
DE102011077179A1 (de) 2012-12-13

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