EP1146205B1 - Elektromagnetischer Aktuator mit Federhaltekappe zur Betätigung eines Gaswechselventils an einer Kolbenbrennkraftmaschine - Google Patents
Elektromagnetischer Aktuator mit Federhaltekappe zur Betätigung eines Gaswechselventils an einer Kolbenbrennkraftmaschine Download PDFInfo
- Publication number
- EP1146205B1 EP1146205B1 EP00127671A EP00127671A EP1146205B1 EP 1146205 B1 EP1146205 B1 EP 1146205B1 EP 00127671 A EP00127671 A EP 00127671A EP 00127671 A EP00127671 A EP 00127671A EP 1146205 B1 EP1146205 B1 EP 1146205B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- opening
- actuator
- retainer cap
- spring
- support cap
- 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
Links
Images
Classifications
-
- 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
- An electromagnetic actuator for actuating a gas exchange valve on a reciprocating internal combustion engine must in large Quantity produced as standard and therefore cost-effective can be.
- Such an electromagnetic Actuator for actuating a gas exchange valve the the force of a ⁇ ffnerfeder and a closing spring between its open position and its closed position over a Armature is guided back and forth, has by far with their pole faces facing each other electromagnet, the serve as an opening magnet and as a closing magnet.
- a housing part for receiving the provided with the coil Yoke body is provided, which is the assembly to a complete electromagnetic actuator in a standard Manufacturing possible.
- the housing part is here suitably made of a metal with non-magnetic properties made of, for example, aluminum or Aluminum alloys, so that by appropriate casting, For example, a die-casting, to the requirements the respective purpose of use adapted housing forms can be produced inexpensively in large quantities.
- the housing part is on its the pole face of the inserted Yoke body averted side each with a tubular Opening for receiving one end of a return spring provided so that it is suitable for both the closing side Also usable for the opener side part.
- valve facing housing On the valve facing housing is the closing spring passed through the opening, extending between engine block and a spring plate is supported on the valve stem.
- the invention is based on the object, an electromagnetic To provide actuator of the type described above, in which the disadvantages listed are avoided.
- This object is according to the invention for an electromagnetic Actuator of the type described solved by a support cap is provided for the opening spring, at the through hole on the housing of the closing magnet is attached via an axially insertable lock.
- Plug-in support body can be easily mounted and offers moreover, the advantage of being one of the preferred ones Embodiment of the invention made of sheet steel by forming can be produced in large quantities.
- the production off a steel sheet has the additional advantage that this a high tensile stress exposed support cap relatively can be formed thin-walled.
- the further advantage Compared to a thread is that the fastening and locking means are designed over a large area can, so that the surface pressures between the fasteners the support cap made of steel and the For example, made of die-cast aluminum housing can be superposed with low surface pressure.
- the support cap on the one hand and the housing in the region of Through hole on the other hand each part of the lock form.
- the lock as a bayonet lock is formed on a part (support cap or housing) at least one radial projection and on other part (housing or support cap) a receptacle for the Has projection.
- the projection and / or the receptacle with respect to the Motion axis of the gas exchange valve designed as a helical surface is. This makes it possible by a relative Rotation of the support cap relative to the housing a change the bias of the opening spring and thus the center position of the armature between the two pole faces.
- the opening spring supporting the bottom of the support cap with at least one approach for an assembly tool is provided.
- This approach to a mounting tool can be achieved by a square opening in the bottom of the support cap or by two arranged at a radial distance from the central axis of the support cap Insertion be given in the then depending on the design either a square key or even a Key used in the form of a so-called hook wrench can be over the after insertion of the support cap in the through hole, which by squeezing the Opener spring happens, the support cap then in the locked position can be turned.
- a supporting cap made of sheet steel at least hardened in its bottom area.
- the opening spring rests at one end on one, connected with an anchor bolt Spring plate made of resistant material from.
- the other end of the opening spring rests on the ground the support cap off. Since here take up considerable spring forces are and the support of the springs in the operation of a is subjected to swelling compressive stress is by curing at least the bottom portion of the support cap Wear by a "incorporation" of the free spring end avoided.
- the illustrated in Fig. 1 electromagnetic actuator is essentially formed by two electromagnets, one Closing magnet 1 and a ⁇ ffnermagneten 2, via spacers 3.1 and 3.2 spaced apart and are aligned with their pole faces 4 against each other.
- an anchor In the free space between the two pole faces 4 is an anchor. 5 arranged, via a guide, such as a guide rod 6, is guided reciprocally.
- the armature 5 has a rectangular Basic form.
- the divided guide rod 6 is at its upper end. 7 with a return spring serving as a return spring 8 in conjunction.
- the other, lower free end 9 of the guide rod. 6 hereby rests on the free end 10 of the shaft 11 a valve from that in the here indicated only cylinder head 12 is guided a piston internal combustion engine.
- a serving as a closing spring 13 return spring is the gas exchange valve acted upon in the closing direction, wherein the Closing spring 13 and the opening spring 8 in its direction of force are directed against each other, so that when energized set Electromagnet of the armature 5 according to its rest position in a middle position between the two pole faces 4 of the two Electromagnet 1 and 2 occupies, as shown in Fig. 1 is.
- the armature 5 accordingly alternately arrives the pole faces 4 of the two electromagnets 1 and 2 to the plant and the gas exchange valve is correspondingly during the Duration of current supply in open position (system on electromagnet 2) against the force of the closing spring 13 and in Closed position (contact with the pole face of the electromagnet 1) held against the force of the opening spring 8.
- the illustrated in Fig. 1 electromagnetic actuator provides a structural unit, the modular from virtually identical Elements is composed.
- the two electromagnets are preferably identical and consist essentially of a housing 14 which opens in the direction of the armature Recess 15, in which a yoke body 16 with Coil 17 is inserted.
- the housing 14 also has a Through opening 18, through which the respective ⁇ ffnerfeder 8 and return spring 13 is passed.
- the housing 14 also has another lateral opening 20 on, which allow access to terminal contacts 21 of the coil 17. This gives the opportunity to have a one-piece, here dash-dotted lines indicated plug 22, the expediently coded, both electromagnets unmistakable to connect with the associated control device.
- the plug 22 is in this case in the side edges of the opening 20 guided and protected.
- Fig. 1 this has, for example, a Alloy alloy die-cast housings 14 Passage openings 23 running parallel to the axis of the guide rod 6 on, which corresponding passage openings are assigned in the spacers 3.1 and 3.2. This gives the possibility of corresponding clamping screws 24, as indicated in phantom in Fig. 1, all Housing firmly to a total component to brace each other and / or to be firmly connected to the engine block 12.
- FIG. 2 is a perspective view of a housing 14 with inserted support cap 25, however, without use Yoke body shown.
- the through hole 18 is on her Yoke body side facing away from a collar 19 enclosed.
- the passage opening is diametrical opposite sides with a groove-shaped recess 26 provided on the support cap 25 a corresponding Projection 27 (Fig. 5, 6, 7) is assigned.
- the support cap 25 axially into the through hole Insert 18 and by twisting, as derived from Fig. 1, after Type of a bayonet lock to lock.
- the opening spring 8 At the Inserting the support cap is the opening spring 8 accordingly biased so that by the bias of the opening spring. 8 the support cap 25 is held in position, namely even if the armature 5 on the pole face 4 of the opening magnet 2 is present.
- the bottom 28 of the support cap 25 is in this case with an opening 29 provided in the embodiment shown in Fig. 2 has a square shape and as a tool approach for rotating the support cap 25 after insertion is used.
- the passage opening 29 is correspondingly round educated.
- a tool approaches are used in this case, such as shown in Fig. 5, spaced from each other Holes 29.1, in which a corresponding as a hook wrench trained tool can be used.
- Fig. 2 The embodiment shown in Fig. 2 is shown in Figs. 3, 4 and 5 shown in detail and will be closer below described.
- Fig. 3 can in the perspective view of the arrangement recognize the groove-shaped recesses 26.
- FIG. 4 The sectional view in Fig. 4 can also be seen that right to the groove-shaped recesses 26 of the lower Edge 30 of the through hole 18 has a recess, which, as Fig. 4 reveals, formed as a helical surface 31 is and with a multitude of successive wells is provided.
- FIG. 5 reveals the projections 27 nose-like elevations 32, which in the wells on the helical surface 31 by turning the support cap 25 in the Through opening 18 are engageable.
- the distance of the changes Bottom surface 28 relative to the pole face 4 of the closing magnet first in the sense of shortening, if after plugging the Support cap 25 this is rotated clockwise.
- the opening spring 8 is biased stronger and accordingly the anchor 5 under appropriate compression of the Closing spring 13 accordingly in the direction of the pole face. 4 of the opening magnet 2 pushed.
- the arrangement is with its lock designed in the manner of a bayonet closure.
- the helical surface 31 as well as form the projection 27 smooth surface, as shown in the Sectional view acc. Fig. 7 is shown.
- the fixation the support cap 25 after the adjustment of the middle layer can then be done by a pin, the in Fig. 7 shown radial holes 33 in the support cap 25 via correspondingly assigned radial not shown here Retaining holes in the collar 19 passes through the housing 14.
- the edge 27.1 of the projections 27 with a series of tooth-like recesses too provided, which at least one corresponding axially through the Bund 19 guided retaining hole is assigned, so that after Adjustment of the middle position by a fixing pin the axial bore in the collar 19 and a corresponding Recess at the edge 27.1 of the projection 27 passing through Pen can be fixed.
- Fig. 8 is again in a perspective view a Embodiment shown in which the housing 14 on its with the yoke body facing away with collar-like lugs 19.1 is provided with radial retaining pins 34 are provided, as shown in the sectional view gem.
- Fig. 9 can be seen.
- the pins 34 engage in corresponding recesses or through holes 35 in the Peripheral wall of the support cap 25 a.
- the recesses 35 can, as FIG. 10 shows, be formed as bores, wherein for releasing the support cap 25, the pins 34 are released have to.
- the above shims 38 can then also used when adjusting the center position of the by the helical surface 31 on the housing 14 on the one hand and the Projection 27 on the support cap 25 on the other hand (see Fig. 4 and 5) available travel is insufficient.
- the available for the housing 14 wall thicknesses are sufficient to the occurring during operation swelling Stresses also in a production of aluminum or Aluminum Die Casting record.
- the thin-walled to perform Support cap 25 is suitably made of sheet steel, at least for increasing the wear resistance the bottom 28 is hardened to incorporate the on the bottom surface inside to avoid opening spring during operation. Despite the thinness can on the steel sheet the between the housing and the support cap 25 acting swelling spring forces be absorbed as tensile load.
- the passage opening 18 may instead of a groove-shaped Recording 26 associated with a corresponding projection 27 and the support cap 25 may instead of a projection be assigned a corresponding groove-shaped recording, as per the embodiments gem. 8 to 11 is shown and described.
Description
- Fig. 1
- einen Vertikalschnitt durch einen elektromagnetischen Aktuator zur Betätigung eines Gaswechselventils,
- Fig. 2
- in perspektivischer Ansicht ein Gehäuse für den Schließmagneten mit Stützkappe für die Öffnerfeder,
- Fig. 3
- perspektivisch das Gehäuse gem. Fig. 2,
- Fig. 4
- einen Vertikalschnitt gem. Der Linie IV-IV in Fig. 3 durch das Gehäuse,
- Fig. 5
- eine perspektivische Ansicht der Stützkappe der Ausführungsform gem. Fig. 2,
- Fig. 6
- einen Vertikalschnitt durch die Stützkappe gem. der Linie VI-VI in Fig. 5,
- Fig. 7
- eine abgewandelte Ausführungsform der Stützkappe gem. Fig. 6 im Schnitt,
- Fig. 8
- in perspektivischer Ansicht eine andere Ausführungsform für das Gehäuse des Schließmagneten,
- Fig. 9
- einen Vertikalschnitt gem. der Linie IX-IX in Fig. 8,
- Fig. 10
- in perspektivischer Ansicht eine Stützkappe der Ausführungsform gem. Fig. 8/9,
- Fig. 11
- in perspektivischer Ansicht eine andere Ausführungsform für eine Stützkappe der Ausführungsform gem. Fig. 8.
Claims (9)
- Elektromagnetischer Aktuator zur Betätigung eines Gaswechselventils an einer Kolbenbrennkraftmaschine, das gegen die Kraft einer Öffnerfeder (8) und einer Schließfeder (13) zwischen seiner Offenstellung und seiner Schließstellung über einen Anker (5) hin und her bewegbar ist, und mit zwei im Abstand zueinander angeordneten Elektromagneten, die als Öffnermagnet (2) und als Schließmagnet (1) dienen und jeweils einen Jochkörper (16) mit Spule (17) aufweisen, deren Polfläche (4) jeweils dem Anker (5) zugekehrt ist, und die jeweils in einem Gehäuse (14) befestigt sind, das auf seiner der Polfläche (4) abgekehrten Seite eine Durchgangsöffnung (18) aufweist, und mit einer Stützkappe (25) für die Öffnerfeder (8), die an der Durchgangsöffnung (18) am Gehäuse (14) des Schließmagneten (1) über eine axial einsteckbare Verriegelung befestigt ist.
- Aktuator nach Abspruch 1, dadurch gekennzeichnet, daß die Stützkappe (25) einerseits und das Gehäuse (14) andererseits im Bereich der Durchgangsbohrung (18) jeweils einen Teil der Verriegelung (31, 37) bilden.
- Aktuator nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Verriegelung als Bajonettverschluß ausgebildet ist, der an einem Teil (25 oder 14) wenigstens einen radialen Vorsprung (37) und am anderen Teil (14 oder 25) eine Aufnahme (31) für den Vorsprung (37) aufweist.
- Aktuator nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Vorsprung (37) und/oder die Aufnahme in bezug auf die Bewegungsachse des Gaswechselventils als Wendelfläche (31) ausgebildet sind.
- Aktuator nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß Sicherungsmittel (32; 33) zur Fixierung der Stützkappe (25) am Gehäuse (14) in einer vorgebbaren Einbaustellung vorgesehen sind.
- Aktuator nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der die Öffnerfeder (8) abstützende Boden (28) der Stützkappe (25) mit wenigstens einem Ansatz (29; 29.1) für ein Montagewerkzeug versehen ist.
- Aktuator nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Stützkappe (25) aus Stahlblech durch Umformen hergestellt ist.
- Aktuator nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Stützkappe (25) zumindest im Bereich ihres Bodens (28) gehärtet ist.
- Aktuator nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß auf dem Boden (28) der Stützkappe (25) wenigstens eine an der Öffnerfeder (8) anliegende Einstellscheibe (38) angeordnet ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10018739A DE10018739A1 (de) | 2000-04-15 | 2000-04-15 | Elektromagnetischer Aktuator zur Betätigung eines Gaswechselventils an einer Kolbenbrennkraftmaschine |
DE10018739 | 2000-04-15 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1146205A2 EP1146205A2 (de) | 2001-10-17 |
EP1146205A3 EP1146205A3 (de) | 2001-11-14 |
EP1146205B1 true EP1146205B1 (de) | 2005-07-06 |
Family
ID=7638869
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00127671A Expired - Lifetime EP1146205B1 (de) | 2000-04-15 | 2000-12-18 | Elektromagnetischer Aktuator mit Federhaltekappe zur Betätigung eines Gaswechselventils an einer Kolbenbrennkraftmaschine |
Country Status (5)
Country | Link |
---|---|
US (1) | US6502534B2 (de) |
EP (1) | EP1146205B1 (de) |
JP (1) | JP2001317317A (de) |
AT (1) | ATE299229T1 (de) |
DE (2) | DE10018739A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2821570B1 (fr) * | 2001-03-01 | 2003-11-07 | Snecma Moteurs | Carter etanche a fermeture quart de tour |
DE102005031241A1 (de) * | 2005-07-01 | 2007-01-04 | Fev Motorentechnik Gmbh | Variabler Ventiltrieb einer Kolben-Brennkraftmaschine |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5961097A (en) * | 1996-12-17 | 1999-10-05 | Caterpillar Inc. | Electromagnetically actuated valve with thermal compensation |
JPH10274017A (ja) * | 1997-03-31 | 1998-10-13 | Nippon Soken Inc | 電磁式弁駆動装置 |
DE29712502U1 (de) | 1997-07-15 | 1997-09-18 | Fev Motorentech Gmbh & Co Kg | Elektromagnetischer Aktuator mit Gehäuse |
DE19756095C2 (de) * | 1997-12-17 | 2001-11-22 | Telefunken Microelectron | Vorrichtung zum Betrieb von Aktoren zur elektromagnetischen Ventilsteuerung bei Brennkraftmaschinen |
EP0977213A1 (de) * | 1998-07-29 | 2000-02-02 | DaimlerChrysler AG | Aktor zur elektromagnetischen Ventilsteuerung |
US6199843B1 (en) * | 1999-04-12 | 2001-03-13 | Siemens Automotive Corporation | Anti-friction helical spring assembly to prevent one end of a spring from rotating during expansion or compression of the spring |
-
2000
- 2000-04-15 DE DE10018739A patent/DE10018739A1/de not_active Withdrawn
- 2000-12-18 DE DE50010667T patent/DE50010667D1/de not_active Expired - Fee Related
- 2000-12-18 AT AT00127671T patent/ATE299229T1/de not_active IP Right Cessation
- 2000-12-18 EP EP00127671A patent/EP1146205B1/de not_active Expired - Lifetime
-
2001
- 2001-03-09 JP JP2001066926A patent/JP2001317317A/ja not_active Withdrawn
- 2001-04-16 US US09/834,902 patent/US6502534B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP1146205A2 (de) | 2001-10-17 |
DE10018739A1 (de) | 2001-10-18 |
EP1146205A3 (de) | 2001-11-14 |
US20010047779A1 (en) | 2001-12-06 |
DE50010667D1 (de) | 2005-08-11 |
ATE299229T1 (de) | 2005-07-15 |
JP2001317317A (ja) | 2001-11-16 |
US6502534B2 (en) | 2003-01-07 |
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