EP0814238B1 - Electromagnetic actuating device for lift valves of internal combustion engines - Google Patents
Electromagnetic actuating device for lift valves of internal combustion engines Download PDFInfo
- Publication number
- EP0814238B1 EP0814238B1 EP97106783A EP97106783A EP0814238B1 EP 0814238 B1 EP0814238 B1 EP 0814238B1 EP 97106783 A EP97106783 A EP 97106783A EP 97106783 A EP97106783 A EP 97106783A EP 0814238 B1 EP0814238 B1 EP 0814238B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- actuating device
- internal combustion
- tappet
- combustion engines
- 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
- 238000002485 combustion reaction Methods 0.000 title claims description 6
- 239000010687 lubricating oil Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
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
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/20—Adjusting or compensating clearance
- F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
- F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
-
- 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 an electromagnetic actuator for Internal combustion engine lift valves with one in the actuator housing of the actuating device guided valve actuating plunger, which interacts a hydraulic valve lash compensation element on the stem acts on the globe valve.
- EP-A-405 189 referenced.
- An electromagnetic lift valve actuator has immense Advantages because the so-called valve timing, d. H. the opening time and the Closing time of the globe valves, as well as the valve lift and valve lift curve are freely adjustable.
- valve timing d. H. the opening time and the Closing time of the globe valves, as well as the valve lift and valve lift curve are freely adjustable.
- any way to Compensation for the valve clearance may be provided, especially in cooperation with a known valve lash compensation element.
- a possible construction for this is shown in the above-mentioned document, whereby the valve clearance compensation element in the interior of the actuator housing, more precisely in the armature provided in it, between the two electromagnetic coils of the actuator housing is guided to be longitudinally displaceable is.
- valve lash adjuster hides a number of disadvantages. So a usually hydraulic valve lash compensation element with a suitable hydraulic medium - usually the lubricating oil of the internal combustion engine is used for this - supplied become what is extremely problematic in the interior of the actuator housing is because the solenoids and the armature moving between them are not may be charged with the internal combustion engine lubricating oil. Further causes the valve lash adjuster located in the armature one Malfunction of the magnetic flux in the armature or generally a malfunction of the magnetic field lines. Furthermore, the anchor is made of soft iron and thus allows not the direct installation of a simple one, just from a piston as well a spring element existing (in itself common) valve lash compensation element, since this cannot be moved lengthways directly in the anchor can be stored.
- the object of the present invention is to show an improved arrangement of a known hydraulic valve lash compensation element.
- the valve lash compensation element is inserted in a cup tappet arranged between the valve actuating tappet and the lifting valve stem, which in turn is guided displaceably in the valve axis direction in a base plate of the actuator housing, the outside diameter of the cup tappet being small compared to that of the actuator housing and is essentially only twice the wall thickness of the tappet wall larger than the outer diameter of the common valve lash compensation element.
- valve clearance compensating element no longer arranged within the actuator housing no interference with the magnetic field lines between the armature and the solenoids.
- the proposed tappet now allows direct installation of the simplest, only from a piston and a Spring element of existing (per se common) valve lash compensation element, and the moving masses - as desirable - so To keep it as small as possible, the diameter of the tappet is like specified minimized.
- FIG. 3 shows an enlarged view of the area around the valve lash compensation element from Fig. 2.
- an internal combustion engine lift valve 1 which is known in the art Way is arranged in the engine cylinder head 2, one in it Set of 3 designated electromagnetic actuator intended.
- This consists of a so-called actuator housing 4, inside whose two magnetic coils 5 are arranged, between which an armature plate 6 is mounted for longitudinal displacement in the valve axis direction 7.
- This anchor plate 6 is moved by the correspondingly excited magnet coils 5 and ultimately transmits its movement via a valve actuation tappet 8 the stem 1 'of the lift valve 1.
- a cup tappet 9 which carries a common, common valve lash compensation element 10, the two ends of this compensating element 10 on the inside of the tappet 9 on the one hand and at the free end of the shaft 1 ' support on the other.
- the tappet 9 is in a so-called base plate 4 'of the actuator housing 4 out and also longitudinally displaceable in the valve axis direction 7 to the movement of the valve actuating tappet 8 can be transferred to the globe valve 1.
- FIG. 1 it is actually plate-shaped Base plate 4 'with a corresponding circular cylindrical receptacle 11 provided, in which the tappet 9 is directly slidably mounted.
- the tappet 9 is secured against falling out during assembly by means of a snap ring 12, a groove 13 in the outer wall of the Bucket 9 the free movement compared to the snap ring 12 in ensures the required scope.
- 2 is the Cup tappet 9 guided in a sleeve 14, which is in the receptacle 11 here thicker designed base plate 4 '- this takes the additional lower magnetic coil 5 on - is inserted.
- the tappet 9 again against falling out via a snap ring 12 secured.
- the outer diameter is in both exemplary embodiments the cup tappet 9 is small compared to that of the actuator housing 4, d. H. the outer diameter of the tappet 9 is essentially only the one that is twice the wall thickness of the tappet wall Outside diameter of the common valve lash adjustment element 10. In this respect this differs in terms of a minimal dead weight Optimized tappets 9 significantly from common tappets, which are usually are stored directly in the engine cylinder head Take up the compensating element and be actuated directly by cams.
- the detailed structure of the actuator housing 4 as well the storage of the electromagnetic actuator 3 in the cylinder head 2 is not described in more detail here and can be designed be as in unpublished patent application 196 11 547, however this and a number of other details may vary be designed by the exemplary embodiments shown, without the content of To leave claims.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Valve Device For Special Equipments (AREA)
Description
Die Erfindung betrifft eine elektromagnetische Betätigungsvorrichtung für Brennkraftmaschinen-Hubventile mit einem im Aktuatorgehäuse der Betätigungsvorrichtung geführten Ventilbetätigungsstößel, der unter Zwischenwirkung eines hydraulischen Ventilspiel-Ausgleichselementes auf den Schaft des Hubventiles einwirkt. Zum bekannten Stand der Technik wird auf die EP-A-405 189 verwiesen.The invention relates to an electromagnetic actuator for Internal combustion engine lift valves with one in the actuator housing of the actuating device guided valve actuating plunger, which interacts a hydraulic valve lash compensation element on the stem acts on the globe valve. The known state of the art is EP-A-405 189 referenced.
Eine elektromagnetische Hubventil-Betätigungsvorrichtung hat immense Vorteile, da die sog. Ventilsteuerzeiten, d. h. der Öffnungszeitpunkt und der Schließzeitpunkt der Hubventile, sowie der Ventilhub und Ventilhubverlauf frei einstellbar sind. Dabei sollte jedoch auch an einer derartigen elektromagnetischen Hubventil-Betätigungsvorrichtung irgendeine Möglichkeit zum Ausgleich des Ventilspieles vorgesehen sein, insbesondere in Zusammenwirkung mit einem an sich bekannten Ventilspiel-Ausgleichselement. Eine mögliche Konstruktion hierfür ist in der oben genannten Schrift gezeigt, wobei das Ventilspiel-Ausgleichselement im Innenraum des Aktuatorgehäuses, genauer im darin vorgesehenen Anker, der zwischen den beiden Elektromagnetspulen des Aktuatorgehäuses längsverschiebbar geführt ist, angeordnet ist.An electromagnetic lift valve actuator has immense Advantages because the so-called valve timing, d. H. the opening time and the Closing time of the globe valves, as well as the valve lift and valve lift curve are freely adjustable. However, such an electromagnetic Lift valve actuator any way to Compensation for the valve clearance may be provided, especially in cooperation with a known valve lash compensation element. A possible construction for this is shown in the above-mentioned document, whereby the valve clearance compensation element in the interior of the actuator housing, more precisely in the armature provided in it, between the two electromagnetic coils of the actuator housing is guided to be longitudinally displaceable is.
Eine derartige Anordnung des Ventilspielausgleichselementes birgt jedoch eine Reihe von Nachteilen. So muß ein üblicherweise hydraulisches Ventilspiel-Ausgleichselement mit einem geeigneten Hydraulikmedium - üblicherweise wird hierfür das Schmieröl der Brennkraftmaschine verwendet - versorgt werden, was im Innenraum des Aktuatorgehäuses äußerst problematisch ist, da die Magnetspulen und der zwischen diesen bewegte Anker nicht mit dem Brennkraftmaschinen-Schmieröl beaufschlagt werden dürfen. Ferner verursacht das im Anker angeordnete Ventilspiel-Ausgleichselement eine Störung des Magnetflusses im Anker bzw. allgemein eine Störung der Magnetfeldlinien. Ferner besteht der Anker aus Weicheisen und erlaubt somit nicht den direkten Einbau eines einfachsten, lediglich aus einem Kolben sowie einem Federelement bestehenden (an sich gängigen) Ventilspiel-Ausgleichselementes, da dieses nicht längsverschiebbar direkt im Anker gelagert sein kann.However, such an arrangement of the valve lash adjuster hides a number of disadvantages. So a usually hydraulic valve lash compensation element with a suitable hydraulic medium - usually the lubricating oil of the internal combustion engine is used for this - supplied become what is extremely problematic in the interior of the actuator housing is because the solenoids and the armature moving between them are not may be charged with the internal combustion engine lubricating oil. Further causes the valve lash adjuster located in the armature one Malfunction of the magnetic flux in the armature or generally a malfunction of the magnetic field lines. Furthermore, the anchor is made of soft iron and thus allows not the direct installation of a simple one, just from a piston as well a spring element existing (in itself common) valve lash compensation element, since this cannot be moved lengthways directly in the anchor can be stored.
Aufgabe der vorliegenden Erfindung ist es, eine demgegenüber verbesserte
Anordnung eines an sich bekannten hydraulischen Ventilspiel-Ausgleichselementes
aufzuzeigen.
Zur Lösung dieser Aufgabe ist vorgesehen, daß das Ventilspiel-Ausgleichselement
in einem zwischen dem Ventilbetätigungsstößel und dem Hubventil-Schaft
angeordneten Tassenstößel eingesetzt ist, der seinerseits in Ventilachsrichtung
verschiebbar in einer Bodenplatte des Aktuatorgehäuses geführt
ist, wobei der Außendurchmesser des Tassenstößels klein gegenüber
demjenigen des Aktuatorgehäuses und im wesentlichen nur um die doppelte
Wandstärke der Tassenstößel-Wand größer als der Außendurchmesser des
gängigen Ventilspiel-Ausgleichselementes ist. The object of the present invention is to show an improved arrangement of a known hydraulic valve lash compensation element.
To solve this problem, it is provided that the valve lash compensation element is inserted in a cup tappet arranged between the valve actuating tappet and the lifting valve stem, which in turn is guided displaceably in the valve axis direction in a base plate of the actuator housing, the outside diameter of the cup tappet being small compared to that of the actuator housing and is essentially only twice the wall thickness of the tappet wall larger than the outer diameter of the common valve lash compensation element.
Mit diesen Merkmalen ist es zunächst einmal möglich, ein hydraulisches
Ventilspiel-Ausgleichselement mit einem geeigneten Hydraulikmedium zu
versorgen, ohne daß dieses Hydraulikmedium in den Innenraum des Aktuatorgehäuses
gelangt, wobei eine vorteilhafte Anordnung des entsprechenden
Versorgungskanales in Anspruch 2 angegeben ist. Ferner verursacht das
nun nicht mehr innerhalb des Aktuatorgehäuses angeordnete Ventilspiel-Ausgleichselement
keine Störung der Magnetfeldlinien zwischen dem Anker
und den Magnetspulen. Der vorgeschlagene Tassenstößel erlaubt nun den
direkten Einbau eines einfachsten, lediglich aus einem Kolben sowie einem
Federelement bestehenden (an sich gängigen) Ventilspiel-Ausgleichselementes,
und um dabei die bewegten Massen - wie wünschenswert - so
gering als möglich zu halten, ist der Durchmesser des Tassenstößels wie
angegeben minimiert.With these features it is possible to start with a hydraulic one
Valve clearance compensation element with a suitable hydraulic medium
supply without this hydraulic medium in the interior of the actuator housing
arrives, an advantageous arrangement of the corresponding
Supply channel is specified in
Näher erläutert wird die Erfindung anhand zweier bevorzugter Ausführungsbeispiele, wobei in den beiden Figuren 1, 2 jeweils ein Längsschnitt durch eine elektromagnetische Betätigungsvorrichtung mit zu betätigendem Hubventil dargestellt ist und gleiche Bauelemente stets mit gleichen Bezugsziffern bezeichnet sind. Fig. 3 zeigt vergrößert die Umgebung des Ventilspiel-Ausgleichselementes aus Fig. 2.The invention is explained in more detail with reference to two preferred exemplary embodiments, a longitudinal section in each of the two FIGS. 1, 2 an electromagnetic actuator with a lift valve to be operated is shown and the same components always with the same reference numerals are designated. Fig. 3 shows an enlarged view of the area around the valve lash compensation element from Fig. 2.
Zur Betätigung eines Brennkraftmaschinen-Hubventiles 1, das in bekannter
Weise im Brennkraftmaschinen-Zylinderkopf 2 angeordnet ist, ist eine in ihrer
Gesamtheit mit 3 bezeichnete elektromagnetische Betätigungsvorrichtung
vorgesehen. Diese besteht aus einem sog. Aktuatorgehäuse 4, innerhalb
dessen zwei Magnetspulen 5 angeordnet sind, zwischen denen eine Ankerplatte
6 in Ventilachsrichtung 7 längsverschiebbar gelagert ist. Diese Ankerplatte
6 wird durch die entsprechend erregten Magnetspulen 5 bewegt und
überträgt ihre Bewegung über einen Ventilbetätigungsstößel 8 letztlich auf
den Schaft 1' des Hubventiles 1.For actuating an internal combustion
Zwischen dem dem Schaft 1' zugewandten Ende des Ventilbetätigungsstößels
8 sowie dem freien Ende des Schaftes 1' ist ein Tassenstößel 9 vorgesehen,
der ein übliches, gängiges Ventilspiel-Ausgleichselement 10 trägt,
wobei sich die beiden Enden dieses Ausgleichselementes 10 an der Innenseite
des Tassenstößels 9 einerseits und am freien Ende des Schaftes 1'
andererseits abstützen. Der Tassenstößel 9 ist dabei in einer sog. Bodenplatte
4' des Aktuatorgehäuses 4 geführt und zwar ebenfalls längsverschiebbar
in Ventilachsrichtung 7, um die Bewegung des Ventilbetätigungsstößels
8 auf das Hubventil 1 übertragen zu können.Between the end of the valve actuating tappet facing the shaft 1 '
8 and the free end of the shaft 1 'a
Beim Ausführungsbeispiel nach Fig. 1 ist die tatsächlich plattenförmig gestaltete
Bodenplatte 4' mit einer entprechenden kreiszylindrischen Aufnahme 11
versehen, in welcher der Tassenstößel 9 direkt verschiebbar gelagert ist.
Gegen Herausfallen bei der Montage gesichert ist der Tassenstößel 9 dabei
mittels eines Sprengringes 12, wobei eine Nut 13 in der Außenwand des
Tassenstößels 9 die freie Verschiebbarkeit gegenüber dem Sprengring 12 im
benötigten Umfang sicherstellt. Beim Ausführungsbeispiel nach Fig. 2 ist der
Tassenstößel 9 in einer Büchse 14 geführt, die in die Aufnahme 11 der hier
dicker gestalteten Bodenplatte 4' - diese nimmt zusätzliche die untere Magnetspule
5 auf - eingesetzt ist. Auch beim Ausführungsbeispiel nach Fig. 2
ist der Tassenstößel 9 über einen Sprengring 12 wieder gegen Herausfallen
gesichert.In the embodiment according to FIG. 1, it is actually plate-shaped
Base plate 4 'with a corresponding circular
Wie ersichtlich ist bei beiden Ausführungsbeispielen der Außendurchmesser
des Tassenstößels 9 klein gegenüber demjenigen des Aktuatorgehäuses 4,
d. h. der Außendurchmesser des Tassenstößels 9 beträgt im wesentlichen
nur den um die doppelte Wandstärke der Tassenstößel-Wand vergrößerten
Außendurchmesser des gängigen Ventilspiel-Ausgleichselementes 10. Insofern
unterscheidet sich dieser im Hinblick auf ein minimales Eigengewicht
optimierte Tassenstößel 9 wesentlich von gängigen Tassenstößeln, die üblicherweise
direkt im Brennkraftmaschinen-Zylinderkopf gelagert sind, ein
Ausgleichselement aufnehmen und dabei direkt von Nocken betätigt werden.As can be seen, the outer diameter is in both exemplary embodiments
the
In der Bodenplatte 4' verläuft ein Ölversorgungskanal 15 für das hydraulische
Ventilspiel-Ausgleichselement 10, der einerseits über einen Stichkanal
16' mit einem Ölkanal 16 im Zylinderkopf 2 in Verbindung steht und andererseits
an der Außenwand des Tassenstößels 9 mündet. Von hier gelangt das
Hydraulikmedium bzw. Schmieröl wie üblich zum hydraulischen Ventilspiel-Ausgleichselement
10. Der detaillierte Aufbau des Aktuatorgehäuses 4 sowie
die Lagerung der elektromagnetischen Betätigungsvorrichtung 3 im Zylinderkopf
2 ist an dieser Stelle nicht näher beschrieben und kann gestaltet
sein wie in der nicht vorveröffentlichten Patentanmeldung 196 11 547, jedoch
kann dies sowie eine Vielzahl weiterer Details durchaus abweichend
von den gezeigten Ausführungsbeispielen gestaltet sein, ohne den Inhalt der
Patentansprüche zu verlassen.An
Claims (2)
- An electromagnetic actuating device for gate valves (1) of internal combustion engines, comprising a valve-actuating push rod (8) guided in the casing (4) of the actuating device (3) and acting on the shank (1') of the gate valve (1) with interposition of a hydraulic valve clearance-compensating element (10),
characterised in that the valve clearance-compensating element (10) is inserted into a cup push rod (9) which is disposed between the valve-actuating push rod (8) and the gate valve shaft (1') and is guided for movement in the axial direction (7) of the valve in a baseplate (4') of the actuator casing (4), wherein the outer diameter of the cup push rod (9) is small compared with that of the actuator casing (4) and is greater than the outer diameter of the conventional valve clearance-compensating element (9) substantially by only twice the thickness of the cup push-rod wall. - An actuating device according to claim 1, characterised in that a duct (15) for supplying oil to the hydraulic valve clearance-compensating element (10) runs through the baseplate (4').
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19624296 | 1996-06-18 | ||
| DE19624296A DE19624296A1 (en) | 1996-06-18 | 1996-06-18 | Electromagnetic actuating device for internal combustion engine lift valves |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0814238A1 EP0814238A1 (en) | 1997-12-29 |
| EP0814238B1 true EP0814238B1 (en) | 2000-01-19 |
Family
ID=7797269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97106783A Expired - Lifetime EP0814238B1 (en) | 1996-06-18 | 1997-04-24 | Electromagnetic actuating device for lift valves of internal combustion engines |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0814238B1 (en) |
| DE (2) | DE19624296A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1002938A2 (en) * | 1998-11-20 | 2000-05-24 | Toyota Jidosha Kabushiki Kaisha | Solenoid valve device |
| US6089197A (en) * | 1998-06-16 | 2000-07-18 | Fev Motorentechnik Gmbh | Electromagnetic actuator for an engine valve, including an integrated valve slack adjuster |
| US6394416B2 (en) | 1998-08-20 | 2002-05-28 | Daimlerchrysler Ag | Device for operating a gas exchange valve |
| US6554248B2 (en) * | 2000-08-15 | 2003-04-29 | Nissan Motor Co., Ltd. | Apparatus for estimating valve-clearance of an electro-magnetically operated valve and valve-operation controller for the electro-magnetically operated valve |
| FR2864574A1 (en) | 2003-12-24 | 2005-07-01 | Peugeot Citroen Automobiles Sa | POWER SUPPLY CIRCUIT FOR A HYDRAULIC STOP, FOR RETRIEVING THE OPERATING SET BETWEEN A VALVE OF AN INTERNAL COMBUSTION ENGINE AND ITS ACTUATING DEVICE |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998042953A1 (en) * | 1997-03-24 | 1998-10-01 | Lsp Innovative Automotive Systems Gmbh | Valve for an internal combustion engine |
| DE19728479C2 (en) | 1997-07-05 | 2001-08-30 | Daimler Chrysler Ag | Device for actuating a gas exchange valve with an electromagnetic actuator |
| DE19745522C2 (en) * | 1997-10-15 | 2001-03-22 | Daimler Chrysler Ag | Device for actuating a gas exchange valve of a reciprocating piston internal combustion engine |
| JPH11336519A (en) * | 1998-04-07 | 1999-12-07 | Fev Motorentechnik Gmbh & Co Kg | Electromagnetic actuator for gas exchange valve with integrated valve gap correcting device |
| DE19825412C2 (en) * | 1998-06-06 | 2001-10-25 | Daimler Chrysler Ag | Device for actuating a gas exchange valve |
| DE19831250C1 (en) * | 1998-07-11 | 1999-10-07 | Daimler Chrysler Ag | Solenoid operated poppet valve for internal combustion engine |
| DE19831520A1 (en) * | 1998-07-14 | 2000-01-20 | Schaeffler Waelzlager Ohg | Electromagnetic valve drive which is built into cylinder head of IC engine has valve drive with devices for centering middle position of closing and opening magnets, relative to half stroke of armature |
| DE19851679C1 (en) * | 1998-11-10 | 2000-05-31 | Daimler Chrysler Ag | Electromagnetic valve actuator starting involves periodically stimulating magnet during starting, setting current level so valve disc contacts valve seat without armature reaching magnet |
| DE19938451A1 (en) | 1999-08-13 | 2001-02-15 | Bayerische Motoren Werke Ag | Electromagnetically actuated valve train for a lifting valve of a reciprocating piston internal combustion engine |
| DE10000045A1 (en) | 2000-01-02 | 2001-07-05 | Leiber Heinz | Electromagnetic actuator |
| DE10018559C1 (en) * | 2000-04-14 | 2001-06-21 | Daimler Chrysler Ag | Electromagnetic actuator for stroke valve in IC engine cylinder has guide sleeve of separate sintered component with stretched neck acting as valve actuator guide |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3311250C2 (en) * | 1983-03-28 | 1985-08-01 | FEV Forschungsgesellschaft für Energietechnik und Verbrennungsmotoren mbH, 5100 Aachen | Device for the electromagnetic actuation of a gas exchange valve for positive displacement machines |
| DE3920976A1 (en) * | 1989-06-27 | 1991-01-03 | Fev Motorentech Gmbh & Co Kg | ELECTROMAGNETIC OPERATING DEVICE |
| DE4035376C2 (en) * | 1989-11-16 | 2000-04-27 | Volkswagen Ag | Actuator for a lift valve |
| US5127375A (en) * | 1991-04-04 | 1992-07-07 | Ford Motor Company | Hydraulic valve control system for internal combustion engines |
-
1996
- 1996-06-18 DE DE19624296A patent/DE19624296A1/en not_active Withdrawn
-
1997
- 1997-04-24 DE DE59701027T patent/DE59701027D1/en not_active Expired - Lifetime
- 1997-04-24 EP EP97106783A patent/EP0814238B1/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6089197A (en) * | 1998-06-16 | 2000-07-18 | Fev Motorentechnik Gmbh | Electromagnetic actuator for an engine valve, including an integrated valve slack adjuster |
| US6394416B2 (en) | 1998-08-20 | 2002-05-28 | Daimlerchrysler Ag | Device for operating a gas exchange valve |
| EP1002938A2 (en) * | 1998-11-20 | 2000-05-24 | Toyota Jidosha Kabushiki Kaisha | Solenoid valve device |
| US6554248B2 (en) * | 2000-08-15 | 2003-04-29 | Nissan Motor Co., Ltd. | Apparatus for estimating valve-clearance of an electro-magnetically operated valve and valve-operation controller for the electro-magnetically operated valve |
| FR2864574A1 (en) | 2003-12-24 | 2005-07-01 | Peugeot Citroen Automobiles Sa | POWER SUPPLY CIRCUIT FOR A HYDRAULIC STOP, FOR RETRIEVING THE OPERATING SET BETWEEN A VALVE OF AN INTERNAL COMBUSTION ENGINE AND ITS ACTUATING DEVICE |
| WO2005064123A2 (en) | 2003-12-24 | 2005-07-14 | Peugeot Citroen Automobiles | Hydraulic bump stop supply system which is intended to take up the clearance between an internal combustion engine valve and the actuating member thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| DE59701027D1 (en) | 2000-02-24 |
| EP0814238A1 (en) | 1997-12-29 |
| DE19624296A1 (en) | 1998-01-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0814238B1 (en) | Electromagnetic actuating device for lift valves of internal combustion engines | |
| EP0736672B1 (en) | Engine braking process for a four stroke internal combustion engine | |
| EP2220413B1 (en) | Electromagnetic actuating unit of a solenoid valve, and method for the production of such an actuating unit | |
| EP0405187B1 (en) | Electromagnetic positioning device | |
| DE68911212T2 (en) | Control arrangement for valve operation of an internal combustion engine. | |
| DE3920976A1 (en) | ELECTROMAGNETIC OPERATING DEVICE | |
| EP2308063A1 (en) | Electromagnetic actuating unit of a hydraulic directional valve | |
| DE102017129423A1 (en) | Switchable cam follower of a valve train | |
| DE19511880A1 (en) | Operating device for gas substitution valves on reciprocating engines | |
| DE19604866A1 (en) | Support system for rocker in internal combustion engine | |
| DE4202506B4 (en) | Variable valve drive for a globe valve | |
| DE10000045A1 (en) | Electromagnetic actuator | |
| DE102016112449B4 (en) | Valve train for an internal combustion engine and internal combustion engine | |
| DE102005003611A1 (en) | Valve train for internal combustion engine, has high and low lift cams, with low lift cam being out of phase with high lift cam | |
| DE4213147A1 (en) | Variable drive for double tappet valve - has raised extension of one tappet fitting inside other | |
| DE19607019A1 (en) | Electromagnetic operating device for IC engine gas changing valve | |
| DE4202542A1 (en) | Variable lift valve drive - adjusts piston surface area presented to pressure in pressure chamber | |
| DE102005023581A1 (en) | Internal combustion engine with reduced cylinder head height | |
| DE4124184A1 (en) | Hydraulic valve cup lifter - has axially adjustable sleeve co-axial with plunger and cup, and one or more bores lockable by cup | |
| DE4026499C1 (en) | Four-stroke piston IC engine brake system - has tilting or swivelling transmission lever with bearing pin, carrying axially slidable roll | |
| DE4037526A1 (en) | Simultaneous drive for poppet valves - has cup-shaped tappet with skirt fitting over spring plate at sides | |
| WO2010066533A1 (en) | Actuating element of an electromagnetic actuating unit of a hydraulic valve | |
| EP1076162A2 (en) | Electromagnetic valve drive mechanism for a piston engine lift valve | |
| DE102016215676A1 (en) | Variable valve train for a reciprocating internal combustion engine | |
| DE4109805A1 (en) | Adjustable hydraulic valve for motor vehicle IC engine - is opened by pressure of lubricating oil admitted and drained by electromagnet rotating hollow piston |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR GB IT |
|
| 17P | Request for examination filed |
Effective date: 19980616 |
|
| 17Q | First examination report despatched |
Effective date: 19981028 |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR GB IT |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20000119 |
|
| REF | Corresponds to: |
Ref document number: 59701027 Country of ref document: DE Date of ref document: 20000224 |
|
| ITF | It: translation for a ep patent filed | ||
| ET | Fr: translation filed | ||
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed | ||
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20040427 Year of fee payment: 8 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050424 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050424 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20050424 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20091231 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20091222 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20080428 Year of fee payment: 12 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20130605 Year of fee payment: 17 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 59701027 Country of ref document: DE |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20141101 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 59701027 Country of ref document: DE Effective date: 20141101 |