EP0924395A2 - Verfahren zur Herstellung eines elektromagnetischen Aktuators - Google Patents
Verfahren zur Herstellung eines elektromagnetischen Aktuators Download PDFInfo
- Publication number
- EP0924395A2 EP0924395A2 EP98123153A EP98123153A EP0924395A2 EP 0924395 A2 EP0924395 A2 EP 0924395A2 EP 98123153 A EP98123153 A EP 98123153A EP 98123153 A EP98123153 A EP 98123153A EP 0924395 A2 EP0924395 A2 EP 0924395A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- plunger
- armature
- hardened
- anchor
- surface treatment
- 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- Withdrawn
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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
-
- 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 invention relates to a method according to the preamble of the claim 1.
- Electromagnetic actuators are used in particular to actuate Gas exchange valves used in internal combustion engines.
- Such an actuator is known for example from DE 296 04 946 U1.
- This previously known Actuator has a plunger and one transverse to the plunger longitudinal axis attached anchor on and two electromagnets with opposite Pole faces, between which the armature counteracts the force of two springs is linearly movable.
- By alternately energizing the two Electromagnets become the anchor of electromagnets that are switched off by the springs approximately in the middle between the pole faces of the Electromagnet is held between the pole faces of the electromagnet moved back and forth and over the plunger moving with the anchor a gas exchange valve actuated.
- the main disadvantage of this actuator is that disturbances, in particular Temperature fluctuations, changes in the viscosity of the lubricant or contamination of the actuator to operational fluctuations the magnetic force acting on the armature and consequently increased Wear material, so that safe continuous operation of the actuator is not guaranteed.
- the invention has for its object a method according to the preamble of claim 1 specify that inexpensive to carry out and which increases the lifespan of the actuator to ensure a safe To enable continuous operation.
- the anchor and the plunger connected to it hardened in a common process step by surface treatment.
- the armature and the plunger are two separate components manufactured in a preceding surface treatment Process step to an anchor-ram assembly firmly connected become.
- the anchor and the plunger from a single blank as a one-piece anchor plunger assembly manufactured.
- the entire surface is advantageously used for the surface treatment the anchor tappet assembly, for example by salt bath nitriding, with a wear-resistant layer, in particular with a titanium nitride layer, coated.
- the anchor tappet assembly can also be hardened by nitriding processes in which nitrogen is added to the Surface of the anchor tappet assembly is introduced, for example by plasma nitriding.
- the actuator has an effect with a gas exchange valve 5 standing plunger 2, one with the plunger 2 transversely to the longitudinal axis of the plunger attached armature 1, and one acting as an opening magnet Electromagnet 3 and one of these in the direction of the ram longitudinal axis spaced apart, acting as a closer magnet, further electromagnets 4 on.
- the electromagnets 3, 4 are by means of a housing part 7 connected to one another and have opposite pole faces 31, 41 on, between which the armature 1 by alternating energization of the excitation coils 30, 40 of the two electromagnets 3, 4 is moved linearly.
- Two counteracting actuating springs 60, 63 which are between the opening magnet 3 and the gas exchange valve 5 are arranged and by means of two spring plates 61, 62 attached to the actuator or cylinder head 8 of the internal combustion engine are causing the armature 1 in the de-energized state of the excitation coils 30, 40 in an intermediate position approximately in the middle between the pole faces 31, 41 of the electromagnets 3, 4 is held.
- the excitation coil 40 of the closing magnet 4 is energized, so that the armature 1 moves in the direction of the pole face 41 of the closing magnet 4 and is held there until the current flow is interrupted. Accordingly, the armature 1 for opening the gas exchange valve 5 through Energizing the excitation coil 30 of the opening magnet 3 to the pole face 31 moved there and held there.
- the electromagnets 3, 4 and the armature 1 are made of soft magnetic Made of materials with high magnetic permeability. You assign one rectangular cross-section, so that you make optimal use of space reached when installing the actuator in the internal combustion engine.
- the anchor 1 and the plunger 2 are first of all welded, glued, Solder or deform to anchor-plunger assembly 1, 2 firmly together connected and both in a subsequent common process step at the same time as anchor plunger assembly 1, 2 with the wear-resistant Layer 9 coated.
- this is a through Salt bath nitriding on the entire surface of the anchor tappet assembly 1, 2 applied titanium nitride layer.
- the anchor-plunger assembly 1, 2 can be the anchor and plunger material regardless of the material strength.
- the anchor 1 is advantageously made of a material with a high magnetic saturation flux density manufactured, because then little anchor material to guarantee the required magnetic forces are required and the accelerated Mass is thus kept low.
- the electromagnets 3, 4 are not hardened, so that the life of the Actuator through with only a small amount of work and materials feasible surface treatment of the armature 1 and plunger 2 inexpensive way is increased.
- the anchor 1 and the plunger 2 in the present example made from two different blanks as two separate components, which only become an anchor-tappet assembly 1, 2 after their completion be connected to each other.
- a blank, d. H. manufactured in one piece one-piece anchor-plunger assembly The anchor 1 and the plunger 2 represent each represent an area of such an assembly.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Electromagnets (AREA)
- Valve Device For Special Equipments (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
Description
Claims (8)
- Verfahren zur Herstellung eines elektromagnetischen Aktuators mit mindestens einem Elektromagneten (3, 4), einem durch Magnetkraft des mindestens einen Elektromagneten (3, 4) bewegbaren Anker (1) und einem mit dem Anker (1) verbundenen Stößel (2), dadurch gekennzeichnet, daß der Anker (1) und der mit diesem verbundene Stößel (2) in einem gemeinsamen Prozeßschritt durch Oberflächenbehandlung gehärtet werden.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Anker (1) und der Stößel (2) als zwei getrennte Bauteile hergestellt werden, die in einem der Oberflächenbehandlung vorangehenden Prozeßschritt miteinander fest verbunden werden.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Anker (1) und der Stößel (2) als einteilige Anker-Stößel-Baugruppe hergestellt werden.
- Verfahren nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß der Anker (1) und der Stößel (2) durch Beschichtung mit einer verschleißhemmenden Schicht (9) gehärtet werden.
- Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß der Anker (1) und der Stößel (2) durch Beschichtung mit einer Titan-Nitrid-Schicht (9) gehärtet werden.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Anker (1) und der Stößel (2) durch Einbringen von Stickstoff in ihre Oberfläche gehärtet werden.
- Verfahren nach Anspruch 6, dadurch gekennzeichnet, daß der Anker (1) und der Stößel (2) durch Plasmanitrieren gehärtet werden.
- Verwendung eines nach einem der vorherigen Ansprüche hergestellten Aktuators zur Betätigung eines Gaswechselventils (5) in einer Brennkraftmaschine.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19757169 | 1997-12-20 | ||
DE19757169A DE19757169A1 (de) | 1997-12-20 | 1997-12-20 | Verfahren zur Herstellung eines elektromagnetischen Aktuators |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0924395A2 true EP0924395A2 (de) | 1999-06-23 |
EP0924395A3 EP0924395A3 (de) | 2000-07-12 |
Family
ID=7852942
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98123153A Withdrawn EP0924395A3 (de) | 1997-12-20 | 1998-12-04 | Verfahren zur Herstellung eines elektromagnetischen Aktuators |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0924395A3 (de) |
DE (1) | DE19757169A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1111203A3 (de) * | 1999-12-09 | 2002-05-15 | Sumitomo Electric Industries, Ltd. | Elektromagnetische Ventilsteuerungseinrichtung |
EP2362125A1 (de) * | 2010-02-22 | 2011-08-31 | Schaeffler Technologies AG & Co. KG | Betätigungselement einer elektromagnetischen Stelleinheit eines Hydraulikventils |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016123827A1 (de) * | 2016-12-08 | 2018-06-14 | ECO Holding 1 GmbH | Zentralaktuator für ein Magnetventil eines Schwenkmotorverstellers |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4231525A (en) * | 1979-05-10 | 1980-11-04 | General Motors Corporation | Electromagnetic fuel injector with selectively hardened armature |
DE3733809A1 (de) * | 1986-10-08 | 1988-04-28 | Mitsubishi Motors Corp | Magnetventil |
US5012982A (en) * | 1986-11-15 | 1991-05-07 | Hitachi, Ltd. | Electromagnetic fuel injector |
JPH0729729A (ja) * | 1993-07-12 | 1995-01-31 | Ckd Corp | 電磁ソレノイド |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1158173B (de) * | 1957-09-11 | 1963-11-28 | Westinghouse Electric Corp | Elektromagnet, insbesondere zum Antrieb elektrischer Schaltgeraete |
RO74414A2 (ro) * | 1974-03-23 | 1981-09-24 | Institutul De Cercetari Si Proiectari Tehnologice Pentru Sectoare Calde,Ro | Procedeu de nitrurare ionica |
US5488340A (en) * | 1994-05-20 | 1996-01-30 | Caterpillar Inc. | Hard magnetic valve actuator adapted for a fuel injector |
DE19526387C2 (de) * | 1994-07-19 | 1998-12-10 | Sumitomo Metal Mining Co | Doppelt beschichteter Stahlverbundgegenstand und Verfahren zu dessen Herstellung |
DE29604946U1 (de) * | 1996-03-16 | 1997-07-17 | FEV Motorentechnik GmbH & Co. KG, 52078 Aachen | Elektromagnetischer Aktuator für ein Gaswechselventil mit Ventilspielausgleich |
-
1997
- 1997-12-20 DE DE19757169A patent/DE19757169A1/de not_active Ceased
-
1998
- 1998-12-04 EP EP98123153A patent/EP0924395A3/de not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4231525A (en) * | 1979-05-10 | 1980-11-04 | General Motors Corporation | Electromagnetic fuel injector with selectively hardened armature |
DE3733809A1 (de) * | 1986-10-08 | 1988-04-28 | Mitsubishi Motors Corp | Magnetventil |
US5012982A (en) * | 1986-11-15 | 1991-05-07 | Hitachi, Ltd. | Electromagnetic fuel injector |
JPH0729729A (ja) * | 1993-07-12 | 1995-01-31 | Ckd Corp | 電磁ソレノイド |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 04, 31. Mai 1995 (1995-05-31) & JP 07 029729 A (CKD CORP), 31. Januar 1995 (1995-01-31) * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1111203A3 (de) * | 1999-12-09 | 2002-05-15 | Sumitomo Electric Industries, Ltd. | Elektromagnetische Ventilsteuerungseinrichtung |
EP2362125A1 (de) * | 2010-02-22 | 2011-08-31 | Schaeffler Technologies AG & Co. KG | Betätigungselement einer elektromagnetischen Stelleinheit eines Hydraulikventils |
US8844900B2 (en) | 2010-02-22 | 2014-09-30 | Schaeffler Technologies Gmbh & Co. Kg | Activation element of an electromagnetic actuating unit of a hydraulic valve |
Also Published As
Publication number | Publication date |
---|---|
EP0924395A3 (de) | 2000-07-12 |
DE19757169A1 (de) | 1999-07-01 |
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