EP0982521B1 - Rahmenartiges Gehäuse eines elektromagnetischen Aktuators zur Ventilbetätigung, insbesondere in Brennkraftmaschinen - Google Patents
Rahmenartiges Gehäuse eines elektromagnetischen Aktuators zur Ventilbetätigung, insbesondere in Brennkraftmaschinen Download PDFInfo
- Publication number
- EP0982521B1 EP0982521B1 EP99114780A EP99114780A EP0982521B1 EP 0982521 B1 EP0982521 B1 EP 0982521B1 EP 99114780 A EP99114780 A EP 99114780A EP 99114780 A EP99114780 A EP 99114780A EP 0982521 B1 EP0982521 B1 EP 0982521B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- actuator
- casing
- limbs
- casing according
- housing
- 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.)
- Expired - Lifetime
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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
- H01F7/081—Magnetic constructions
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- 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
-
- 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
- F01L2301/00—Using particular materials
-
- 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
- F01L2303/00—Manufacturing of components used in valve arrangements
Definitions
- the invention relates to frame-like housing of an electromagnetic actuator for valve actuation, especially in internal combustion engines, in which at least one of the legs spaced crossbars with a guide device for one for valve actuation via an armature that is stroke-controlled between switching magnets driven plunger is equipped, transversely to the stroke direction of the armature between the crossbars divided legs of the housing ready for installation relative to each other secured and braced against each other.
- Such an actuator with a frame-like housing is for example from the technical information sheet TO 10/97 on pages 8 and 9 of FEV Motorentechnik GmbH & Co. KG, Aachen.
- This known actuator has a frame-like Housing on that in his legs in the stroke range of the armature is divided several times. Since the one acting on a lift valve, with the armature Tappet connected to the drive in areas of the connected via the legs Crossbeams are guided to the aligned arrangement of the guide devices for the tappet the legs at their partitions via fitting devices secure relative to each other.
- the fitting devices known so far for this are by machining processes formed, which are disadvantageously expensive.
- Another is with different Materials for the frame-like housing of the actuator and the fitting devices due to the high temperatures during operation of the actuator, the housing parts are displaced against each other not to be excluded, so that in narrowly trained management facilities for the plunger when the internal combustion engine starts cold the ram cannot be excluded.
- the invention is based, for a generic actuator housing the task to show a temperature-insensitive fitting device that continues is insensitive to temperature-related deformations of the housing and can be generated with less effort.
- the fracture parting surfaces produced by means of fracture separation advantageously result Way with less effort, a backlash-free fitting device, this positive Interlocking of the fracture dividing surfaces remains free of play at any temperature and ensures an advantageous heat transfer compared to smooth contact surfaces.
- This heat transfer there is a heat exchange in the frame-like Housing as well as between the housing and the internal combustion engine, which is particularly the case with relatively large coil powers of the switching magnets is advantageous.
- This invention enables an advantageous embodiment of the actuator housing in such a way that the legs have at least one each before breaking separation are formed in the respective leg of the lengthwise recess, which after an approximately central fracture of the legs for processing the over the fractured partitions joined housing if necessary for mutual bracing the half of the housing parts and the ready-to-install actuator the recording of continuous, interacting with the internal combustion engine Fixing screws serve.
- each leg of the fracture separation cross section is reduced and further is the number with the central division of the actuator housing by means of break separators the housing parts significantly reduced. Furthermore, each of the preferably only one Recess in each leg for machining the actuator housing Arrangement of a provisional screw connection for mutual bracing of the Halves of the housing are used, ultimately each of the recesses for attachment of the ready-to-install actuator for a through fastening screw serves.
- Actuator housing can be arranged in alignment in both crossbeams
- Ram guide devices are advantageously achieved that releasably braced
- the tappet guide devices are attached to the housing parts that are joined by the broken legs can be finished. So that are the management institutions clearly assigned to the fitting devices achieved by breaking, which a relative due to the temperature-independent freedom of play of the fracture dividing surfaces Misalignment of the guide devices is avoided.
- both guide devices are of coil core of the switching magnets separately in the crossbars arranged, these preferably designed as slide bushing guide devices the arrangement of a one-piece plunger with a fixed anchor serve.
- the one-piece tappet has a long-spaced guide base with the advantage of no tendency to jam. This is advantageous safe operation of the actuator is guaranteed, especially when cold starting.
- each completed with a switching magnet and other facilities Housing parts with inserted plunger by gluing or soldering the leg fracture surfaces are added to a one-piece, ready-to-install actuator, which by means of two fastening screws passing through the legs with the internal combustion engine is connectable.
- An advantageous permanent fixation of both housing parts is further according to the invention thereby achieved that at least on the leg fracture surfaces of one of the housing parts an anerobically curing adhesive such as Cyanoacrylate is applied.
- an anerobically curing adhesive such as Cyanoacrylate is applied.
- the adhesive can advantageously be used against one another between the fracture separating surfaces hardened housing parts harden to a high strength Connection of both housing parts.
- the material for the actuator housing proposed a hypereutectic aluminum-silicon alloy or a powder metallurgical or a spray-compacted light metal material, wherein the legs may be separate in the area of the fracture parting surfaces are embrittled by means of silicon enrichment or by means of an enrichment particle or short fiber reinforced materials.
- a heat-conducting adhesive is used for bonded fracture separating surfaces.
- a preferred embodiment of an actuator housing is characterized by training as a die-cast part made of the light metal alloy AlSi18Cu or one short fiber reinforced magnesium alloy.
- the invention is based on an actuator housing shown schematically in the drawing described.
- the single figure shows a frame-like housing 1 of an electromagnetic Actuator 2 for valve actuation, especially in internal combustion engines.
- the housing is each of the crossbeams 4 which are spaced apart via legs 3 and 5 each equipped with a guide device 6, 7 for one for valve actuation via a stroke-controlled armature 10 between switching magnets 8 and 9 driven plunger 11. Transversely to the stroke direction of the armature 10 are between the Cross members 4 and 5 divided legs 3 of the housing 1 ready for installation relative to each other secured and arranged braced against each other.
- the leg fracture separating surfaces 13 are additionally glued to one another or soldered, in both cases the housing parts 1 'and 1 "braced against each other are for the precise fitting of the fracture dividing surfaces 13.
- a reliable adhesive connection with relatively short adhesive setting times is achieved in that at least on the leg fracture separating surfaces 13 one of the Housing parts 1 'or 1 "an anerobically curing adhesive such as cyanoacrylate applied is. With a view to a good heat transfer, a thermally conductive one Glue used. Should the respective adhesive connection not have optimal heat transfer enable, the housing parts 1 'and 1 "together mechanically be bracketed (not shown), what together with the one inside the other toothed fracture dividing surfaces 13 also a safe and easy-to-use assembly unit of the actuator 2 results.
- break-separated actuator housing 1 can be used as Material a hypereutectic aluminum-silicon alloy or a powder metallurgical or a spray-compacted light metal material can be selected, the Legs 3, if necessary, separately embrittled in the area of the fracture separating surfaces 13 can be by means of a silicon enrichment or an enrichment through particle or short fiber reinforced materials.
- a preferred embodiment of the actuator housing 1 is characterized by training as a die-cast part made of the light metal alloy AlSi18Cu or one short fiber reinforced magnesium alloy.
- AlSi18Cu can guide devices 6 and 7 formed for the one-piece plunger 11 directly in the actuator housing 1 be, the guide holes in the cross members 4 and 5 after a Finishing honed or etched are slidable to expose the plunger 11 bearing Si crystals.
- an actuator 2 with play-free joined housing parts 1 'and 1 " created with the advantage of a jam-free guidance of a one-piece plunger in the crossbeams 4 and 5 widely spaced guide devices 6 and 7, which, for example, can also be designed as sliding bushes, as shown, with a sliding guide of the plunger 11 in the laminated coil cores Switching magnets 8, 9 is also avoided.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Valve Device For Special Equipments (AREA)
Description
Claims (10)
- Rahmenartiges Gehäuse eines elektromagnetischen Aktuators zur Ventilbetätigung, insbesondere in Brennkraftmaschinen,bei dem zumindest eine der über Schenkel (3) beabstandet angeordneten Quertraversen (4, 5) mit einer Führungseinrichtung (6, 7) für einen zur Ventilbetätigung über einen zwischen Schaltmagneten (8, 9) hubgesteuerten Anker (10) angetriebenen Stößel (11) ausgerüstet ist, wobeiquer zur Hubrichtung des Ankers (10) zwischen den Quertraversen (4, 5) geteilte Schenkel (3) des Gehäuses (1) einbaufertig relativ zueinander gesichert und gegeneinander verspannbar angeordnet sind,daß die Schenkel (3) des Gehäuses (1) mittels Bruchtrennen geteilt sind.
- Aktuator-Gehäuse nach Anspruch 1, dadurch gekennzeichnet,daß die Schenkel (3) vor dem Bruchtrennen zumindest jeweils mit einer im jeweiligen Schenkel (3) der Länge nach verlaufenden Ausnehmung (12) ausgebildet sind, dienach einem etwa mittigen Bruchtrennen der Schenkel (3) zur Bearbeitung des über die Bruchtrennflächen (13) gefügten Gehäuses (1) gegebenenfalls zum gegenseitigen Verspannen der hälftigen Gehäuse-Teile (1', 1") dienen, unddie bei einbaufertigem Aktuator (2) der Aufnahme durchgehender, mit der Brennkraftmaschine zusammenwirkender Befestigungsschrauben dienen.
- Aktuator-Gehäuse nach Anspruch 1 und 2, dadurch gekennzeichnet, daß in beiden Quertraversen (4, 5) fluchtend angeordnete Stößel-Führungseinrichtungen (6, 7) bei lösbar verspannt über die Schenkel-Bruchtrennflächen (13) gefügten Gehäuse-Teilen (1', 1") endbearbeitet sind.
- Aktuator-Gehäuse nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß beide von Spulenkernen der Schaltmagnete (8, 9) gesondert in den Quertraversen (4, 5) angeordneten Führungseinrichtungen (Gleitbuchsen 6, 7) der Anordnung eines einteiligen Stößels (11) mit antriebsfest verbundenem Anker (10) dienen.
- Aktuator-Gehäuse nach den Ansprüchen 1 bis 4, dadurch gekennzeichnet,daß die mit je einem Schaltmagneten (8, 9) und sonstigen Einrichtungen komplettierten Gehäuse-Teile (1', 1") mit eingesetztem Stößel (11) mittels Kleben oder Löten der Schenkel-Bruchtrennflächen (13) zu einem einteiligen, einbaufertigen Aktuator (2) ergänzt sind, dermittels zweier, die Schenkel (3) durchsetzender Befestigungsschrauben mit der Brennkraftmaschine verbindbar ist.
- Aktuator-Gehäuse nach Anspruch 5, dadurch gekennzeichnet, daß zumindest auf die Schenkel-Bruchtrennflächen (13) eines der Gehäuse-Teile (1', 1") ein anerob aushärtender Kleber wie z.B. Cyanacrylat aufgetragen ist.
- Aktuator-Gehäuse nach Anspruch 5, dadurch gekennzeichnet, daß die Schenkel-Bruchtrennflächen (13) mittels eines wärmeleitenden Klebers verbunden sind.
- Aktuator-Gehäuse nach den Ansprüchen 1 bis 7, dadurch gekennzeichnet,daß eine übereutektische Alu-Silizium-Legierung oder ein pulvermetallurgischer oder ein sprühkompaktierter Leichtmetallwerkstoff gewählt ist, wobeidie Schenkel (3) gegebenenfalls im Bereich der Bruchtrennflächen (13) gesondert versprödet sind mittels einer Silizium-Anreicherung oder einer Anreicherung durch partikel- oder kurzfaserverstärkter Werkstoffe.
- Aktuator-Gehäuse nach Anspruch 8, gekennzeichnet durch die Ausbildung als Druckgußteil aus der Leichtmetall-Legierung AlSi18Cu oder einer kurzfaserverstärkten Magnesium-Legierung.
- Aktuator-Gehäuse nach Anspruch 9, dadurch gekennzeichnet,daß die Führungseinrichtungen (6, 7) in den Quertraversen (4, 5) des aus einer übereutektischen Alu-Silizium-Legierung (z.B. AlSi18Cu) gestalteten Gehäuses (1) als Bohrungen ausgebildet sind, in denennach einer Feinbearbeitung mittels Honen und/oder Ätzen den Stößel (11) gleitbeweglich tragende Si-Kristalle freigelegt sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19838102A DE19838102A1 (de) | 1998-08-21 | 1998-08-21 | Rahmenartiges Gehäuse eines elektromagnetischen Aktuators zur Ventilbetätigung, insbesondere in Brennkraftmaschinen |
DE19838102 | 1998-08-21 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0982521A2 EP0982521A2 (de) | 2000-03-01 |
EP0982521A3 EP0982521A3 (de) | 2001-08-08 |
EP0982521B1 true EP0982521B1 (de) | 2003-04-09 |
Family
ID=7878338
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99114780A Expired - Lifetime EP0982521B1 (de) | 1998-08-21 | 1999-07-28 | Rahmenartiges Gehäuse eines elektromagnetischen Aktuators zur Ventilbetätigung, insbesondere in Brennkraftmaschinen |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0982521B1 (de) |
DE (2) | DE19838102A1 (de) |
ES (1) | ES2194405T3 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19958101A1 (de) * | 1999-12-02 | 2001-06-07 | Fev Motorentech Gmbh | Elektromagnetischer Aktuator mit geteiltem Gehäuse |
DE10009927A1 (de) * | 2000-03-01 | 2001-09-06 | Bayerische Motoren Werke Ag | Elektromagnetischer Hubaktuator für einen Ventiltrieb einer Brennkraftmaschine |
DE10321017A1 (de) * | 2003-05-10 | 2004-12-02 | Bayerische Motoren Werke Ag | Hubaktuator für Verbrennungsmotoren mit elektrischem Ventiltrieb |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT372417B (de) * | 1980-08-21 | 1983-10-10 | Zimmer Johannes Gmbh | Spritzduese |
US4515343A (en) * | 1983-03-28 | 1985-05-07 | Fev Forschungsgesellschaft fur Energietechnik und ver Brennungsmotoren mbH | Arrangement for electromagnetically operated actuators |
US4779582A (en) * | 1987-08-12 | 1988-10-25 | General Motors Corporation | Bistable electromechanical valve actuator |
GB2302762B (en) * | 1994-09-22 | 1997-05-07 | Toyota Motor Co Ltd | Electromagnetic valve driving apparatus for driving a valve of an internal combustion engine |
DE19611547A1 (de) * | 1996-03-23 | 1997-09-25 | Bayerische Motoren Werke Ag | Elektromagnetische Betätigungsvorrichtung für Brennkraftmaschinen-Hubventile |
-
1998
- 1998-08-21 DE DE19838102A patent/DE19838102A1/de not_active Withdrawn
-
1999
- 1999-07-28 DE DE59904924T patent/DE59904924D1/de not_active Expired - Fee Related
- 1999-07-28 ES ES99114780T patent/ES2194405T3/es not_active Expired - Lifetime
- 1999-07-28 EP EP99114780A patent/EP0982521B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE19838102A1 (de) | 2000-02-24 |
EP0982521A2 (de) | 2000-03-01 |
DE59904924D1 (de) | 2003-05-15 |
EP0982521A3 (de) | 2001-08-08 |
ES2194405T3 (es) | 2003-11-16 |
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