EP1552117B1 - Electromagnetic valve operating device with adjustable neutral position - Google Patents

Electromagnetic valve operating device with adjustable neutral position Download PDF

Info

Publication number
EP1552117B1
EP1552117B1 EP03750561A EP03750561A EP1552117B1 EP 1552117 B1 EP1552117 B1 EP 1552117B1 EP 03750561 A EP03750561 A EP 03750561A EP 03750561 A EP03750561 A EP 03750561A EP 1552117 B1 EP1552117 B1 EP 1552117B1
Authority
EP
European Patent Office
Prior art keywords
valve
actuator
neutral position
backing plate
drive device
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
Application number
EP03750561A
Other languages
German (de)
French (fr)
Other versions
EP1552117A1 (en
Inventor
Johannes Meyer
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP1552117A1 publication Critical patent/EP1552117A1/en
Application granted granted Critical
Publication of EP1552117B1 publication Critical patent/EP1552117B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • 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
    • F01L2820/00—Details on specific features characterising valve gear arrangements
    • F01L2820/01—Absolute values

Definitions

  • the present invention relates to an electromagnetic valve drive device according to the preamble of claim 1.
  • An electromagnetic valve drive device is further from the DE 694 09 485 T2 in whose entirety the reference is made in the present application.
  • the valve drive device described there has an actuator or an "anchor” with an “anchor plate".
  • the actuator with the armature plate is slidably disposed and provided for actuating a valve of an internal combustion engine, ie, an intake valve or an exhaust valve.
  • the armature plate is arranged between two electromagnets spaced apart in the displacement direction.
  • One electromagnet is arranged on the valve-near side of the anchor plate and the other on the valve-remote side of the anchor plate.
  • two compression springs are provided, wherein the one compression spring is also disposed on the valve near side and the other compression spring on the valve remote side of the anchor plate.
  • the compression springs push the actuator or the anchor plate in a neutral position. In the neutral position, the spring forces cancel each other straight.
  • the actuator or the armature plate can be deflected counter to the spring forces.
  • the valve connected to the actuator By deflecting the actuator, the valve connected to the actuator can be opened or closed.
  • the valve In the neutral position of the actuator, the valve is in a "middle position", in it is partially open.
  • a hexagon socket screw is provided, which presses against the valve remote end of the valve distal compression spring.
  • the object of the invention is to provide an electromagnetic valve drive device which is optimized in terms of energy requirements.
  • the invention is based on an electromagnetic valve drive device with an axially displaceable actuator for opening or closing a valve.
  • the actuator has an anchor plate. Further, two successively arranged in the direction of displacement and spaced apart electromagnets are provided, wherein the one electromagnet is disposed on the valve near side of the armature plate and the other electromagnet on the valve remote side of the armature plate. Two successively arranged in the direction of displacement springs, one on the valve near side of the armature plate and the other on the far side of the armature plate push the actuator or the armature plate in a neutral position when the electromagnets are de-energized. By energizing the electromagnet, the actuator or the armature plate can be deflected from the neutral position. At one end of one of the two springs a stop element is provided. By Adjusting the stop element, the bias of the springs and thus the position of the neutral position of the actuator can be changed with respect to the electromagnet.
  • the essence of the invention consists in the fact that the stop element is arranged displaceably in the direction of displacement of the actuator and that an actuating device is provided which allows a displacement of the stop element during operation of the valve drive device. During operation of the engine so an adjustment of the neutral position of the actuator is possible.
  • the neutral position of the actuator or the armature plate can thus be changed. That is, the neutral position, in which cancel the forces of the two springs, can be moved in the direction of the solenoid close to the valve or in the direction of the electromagnet remote from the valve.
  • the valve is an inlet valve or an outlet valve, it makes sense, depending on the load condition of the internal combustion engine, to change the neutral position of the actuator during operation for energetic reasons.
  • the exhaust valve When the exhaust valve, it makes sense to bring the actuator or the armature plate in a neutral position at the start of the engine or in low load operation, which corresponds to the center position between the two electromagnets. In this neutral position, the anchor plate is equidistant from both electromagnets, unless they are energized. In load operation, however, it is energetically advantageous if the neutral position of the actuator is moved towards the solenoid close to the valve. This is possible by operating the actuating element. By actuating the actuating element, the abutting stop element at a spring end can be displaced in the direction of displacement of the actuator. By moving the stop element, the bias of the two springs and thus the position of the neutral position can be changed.
  • the actuator or the armature plate is not in the middle position between the two electromagnets after engine start or idle and in partial load operation, but for far away from the electromagnet.
  • the actuator By operating the actuator can be moved in load operation, the actuator so that its neutral position corresponds to the center position between the two electromagnets.
  • a hydraulic actuator is provided.
  • the actuating device has a pivoting lever with a short and a long lever arm.
  • the short lever arm cooperates with the stop element of the actuator.
  • the long lever arm is acted upon by a hydraulic cylinder with an adjustment.
  • the hydraulic cylinder can be connected via a lockable solenoid valve with the engine oil circuit. In load operation of the internal combustion engine, the engine oil pressure is sufficiently large, so that when the solenoid valve is open, the swivel arm can be actuated to adjust the neutral position.
  • the one end of the upper or remote from the valve spring by means of the pivot lever is shifted by twice the amount of the desired neutral position adjustment in the direction of displacement.
  • an adjusting screw can be provided on the short lever arm of the pivot lever.
  • the adjusting screw can be screwed directly into the short lever arm and against the stop element Press the valve remote spring.
  • the adjusting screw is secured by a screw lock against rotation, for example by a lock nut.
  • Such an actuator may be associated with a single valve.
  • such an actuating device may be provided for adjusting the actuators of two or more valves.
  • the hydraulic piston associated with the intake valves and the exhaust valves can each be connected to each other by a common oil line and connected via a simple solenoid valve to the engine oil circuit.
  • the actuator allows a "two-point adjustment". That is, the actuator is switchable between exactly two neutral positions. In this case, no sensors are required to detect the neutral position.
  • a continuous neutral position adjustment can also be provided. That is, not only upper and lower neutral positions can be set, but also any intermediate neutral positions.
  • FIG. 1 shows an actuator 1 of an electromagnetic valve drive device for an internal combustion engine.
  • the actuator 1 is provided for actuating two valves, for example two exhaust valves or two intake valves.
  • the valves are not shown in the illustration shown.
  • an actuator is assigned to each valve, which by an anchor rod 2 (see. FIGS. 2, 3 ) and an anchor plate 3 ( FIG. 4 ) is formed.
  • an anchor rod 2 see. FIGS. 2, 3
  • an anchor plate 3 FIG. 4
  • a valve spring is provided in each case, wherein in the FIGS. 1 to 3 in each case only an upper valve spring is shown, which can also be referred to as valve-distal valve spring 4, 5.
  • valve springs press the anchor rod 2 with its armature plate 3 in a neutral position. In the neutral position, the forces of the opposing upper and lower valve springs cancel out. In the neutral position of the anchor rod or the anchor plate which cooperates with the anchor rod valve is partially open, eg half open. For complete opening or closing of the valves, one valve-near and one valve-remote electromagnet is provided per valve.
  • valve-remote electromagnet 6 arranged above the armature plate is shown.
  • valve near solenoid 7 is shown.
  • the two electromagnets 6, 7 are spaced apart in the direction of displacement of the anchor rod 2 and the anchor plate 3.
  • the remote valve electromagnet 6 is energized. That is, the anchor plate 3 is attracted to the valve remote solenoid and connected to the anchor rod 2 valve is closed.
  • a stop element 8 is attached to the valve distal end of the anchor rod 2, which is provided for supporting the upper valve spring 4, 5. Furthermore, a further stop element 9 is provided.
  • the remote valve Valve spring 4 is thus clamped between the two stop elements 8, 9.
  • the upper stop element 9 is acted upon by a pivot lever 10 or 10 '.
  • the pivoting lever 10 or 10 ' has a short lever arm 11 or 11' and a long lever arm 12 or 12 '.
  • an adjusting screw 13 or 13' screwed which presses directly against the upper stop element 9 and 9 '.
  • pivot levers 10 are each about a dashed lines pivot axis 14, 14 'pivotally, the pivot lever 10, 10' in the short lever arm 11, 11 'and in the long lever arm 12, 12' divided.
  • the two long lever arms 12, 12 ' acted upon by a common piston 15 acted upon hydraulically.
  • the piston 15 can be connected via a lockable solenoid valve to the engine oil circuit.
  • FIG. 2 shows the deactivated state.
  • the piston 15 is not subjected to engine oil pressure.
  • FIG. 3 shows a state in which the hydraulic piston 15 is displaced upward by engine oil pressure. Accordingly, the pivot lever 10 is pivoted counterclockwise. Over the short lever arm 11 of the pivot lever 10, the upper stop element 9 is pressed down. As a result, the valve-distal spring 4 and the associated valve near spring 5 is compressed. That is, the two springs are biased further. In addition, thereby the anchor rod 2 and the anchor plate 3 in the direction of the valve near solenoid (see. FIG. 4 ) postponed. By pressing the piston 15 so the neutral position of the anchor rod 2 and the anchor plate 3 within the gap 16 (see. FIG. 4 ), which is provided between the valve remote electromagnet 6 and the valve-near electromagnet 7, to be changed.
  • each valve or more precisely each valve stem or each anchor plate, may also be provided with a separate actuator, i. be associated with a separate piston 15.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

The invention relates to an electromagnetic valve operating device for an internal combustion engine, with an axially-displaceable actuator for the opening and closing of a valve, whereby the actuator comprises an armature plate. Two electromagnets are further provided, arranged separately and one behind the other in the direction of displacement. Two springs are provided one behind the other in the direction of displacement, whereby one spring is arranged on the side of the armature plate nearest the valve and the other on the side of the armature plate furthest from the valve. The actuator may be displaced from the neutral position thereof by means of passing a current through the electromagnets. An adjuster element is provided at the end of one of both springs away from the armature plate. The pre-tension of the spring and thus the neutral position of the actuator may be adjusted by means of the adjuster element. The adjuster element is arranged such as to be displaced in the direction of displacement and an operating device is provided which permits an adjustment of the neutral position during the operation of the valve operating device.

Description

Die vorliegende Erfindung betrifft eine elektromagnetische Ventiltriebvorrichtung gemäß dem Oberbegriff des Patentanspruches 1.The present invention relates to an electromagnetic valve drive device according to the preamble of claim 1.

Eine derartige elektromagnetische Ventiltriebvorrichtung ist aus der US 4,455,543 bekannt.Such an electromagnetic valve drive device is known from US 4,455,543 known.

Eine elektromagnetische Ventiltriebvorrichtung ist ferner aus der DE 694 09 485 T2 bekannt, auf deren Inhalt in der vorliegenden Anmeldung in vollem Umfang Bezug genommen wird. Die dort beschriebene Ventiltriebvorrichtung weist ein Stellglied bzw. einen "Anker" mit einer "Ankerplatte" auf. Das Stellglied mit der Ankerplatte ist verschieblich angeordnet und zur Betätigung eines Ventils eines Verbrennungsmotors, d.h. eines Einlassventils oder eines Auslassventils vorgesehen. Die Ankerplatte ist zwischen zwei in Verschieberichtung voneinander beabstandeten Elektromagneten angeordnet. Der eine Elektromagnet ist auf der ventilnahen Seite der Ankerplatte und der andere auf der ventilfernen Seite der Ankerplatte angeordnet. Ferner sind zwei Druckfedern vorgesehen, wobei die eine Druckfeder ebenfalls auf der ventilnahen Seite und die andere Druckfeder auf der ventilfernen Seite der Ankerplatte angeordnet ist. Die Druckfedern drücken das Stellglied bzw. die Ankerplatte in eine Neutralstellung. In der Neutralstellung heben sich die Federkräfte gerade gegeneinander auf. Durch Bestromen eines bzw. beider Elektromagneten kann das Stellglied bzw. die Ankerplatte entgegen den Federkräften ausgelenkt werden. Durch Auslenken des Stellglieds kann das mit dem Stellglied verbundene Ventil geöffnet bzw. geschlossen werden. In der Neutralstellung des Stellglieds befindet sich das Ventile in einer "Mittelstellung", in der es teilweise geöffnet ist. Zur Feinjustierung der Neutralstellung ist eine Innensechskantschraube vorgesehen, die gegen das ventilferne Ende der ventilfernen Druckfeder drückt. Durch Verdrehen der Einstellschraube kann die Vorspannung der beiden Federn und somit die Lage Neutralstellung des Stellglieds in Bezug auf die Elektromagneten verändert werden.An electromagnetic valve drive device is further from the DE 694 09 485 T2 in whose entirety the reference is made in the present application. The valve drive device described there has an actuator or an "anchor" with an "anchor plate". The actuator with the armature plate is slidably disposed and provided for actuating a valve of an internal combustion engine, ie, an intake valve or an exhaust valve. The armature plate is arranged between two electromagnets spaced apart in the displacement direction. One electromagnet is arranged on the valve-near side of the anchor plate and the other on the valve-remote side of the anchor plate. Further, two compression springs are provided, wherein the one compression spring is also disposed on the valve near side and the other compression spring on the valve remote side of the anchor plate. The compression springs push the actuator or the anchor plate in a neutral position. In the neutral position, the spring forces cancel each other straight. By energizing one or both electromagnets, the actuator or the armature plate can be deflected counter to the spring forces. By deflecting the actuator, the valve connected to the actuator can be opened or closed. In the neutral position of the actuator, the valve is in a "middle position", in it is partially open. For fine adjustment of the neutral position, a hexagon socket screw is provided, which presses against the valve remote end of the valve distal compression spring. By turning the adjusting screw, the bias of the two springs and thus the position neutral position of the actuator can be changed with respect to the electromagnet.

Eine Verstellung der Neutralstellung des Stellglieds ist mit erheblichem Arbeitsaufwand verbunden und nur in der Werkstatt möglich. Eine fest eingestellte Neutralstellung des Stellglieds ist jedoch für manche Betriebszustände des Motors stets ein energetischer "Kompromiss". Zum Öffnen bzw. Schließen des Ventils muss wahlweise der eine oder andere Elektromagnet bestromt werden. Zur Minimierung des Bedarfs an elektrischer Energie wäre es wünschenswert, wenn die Neutralstellung des Stellglieds während des Betriebs des Verbrennungsmotors veränderbar wäre.An adjustment of the neutral position of the actuator is associated with considerable work and possible only in the workshop. However, a fixed neutral position of the actuator is always an energetic "compromise" for some engine operating conditions. To open or close the valve, either one or the other electromagnet must be energized. To minimize the need for electrical energy, it would be desirable if the neutral position of the actuator were variable during operation of the internal combustion engine.

Aufgabe der Erfindung ist es, eine elektromagnetische Ventiltriebvorrichtung zu schaffen, die hinsichtlich des Energiebedarfs optimiert ist.The object of the invention is to provide an electromagnetic valve drive device which is optimized in terms of energy requirements.

Diese Aufgabe wird durch die Merkmale des Patentanspruches 1 gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung sind den Unteransprüchen zu entnehmen.This object is solved by the features of claim 1. Advantageous embodiments and further developments of the invention can be found in the dependent claims.

Die Erfindung geht von einer elektromagnetischen Ventiltriebvorrichtung mit einem axial verschieblichen Stellglied zum Öffnen bzw. Schließen eines Ventils aus. Das Stellglied weist eine Ankerplatte auf. Ferner sind zwei in Verschieberichtung hintereinander angeordnete und voneinander beabstandete Elektromagneten vorgesehen, wobei der eine Elektromagnet auf der ventilnahen Seite der Ankerplatte und der andere Elektromagnet auf der ventilfernen Seite der Ankerplatte angeordnet ist. Zwei in Verschieberichtung hintereinander angeordnete Federn, die eine auf der ventilnahen Seite der Ankerplatte und die andere auf der ventilfernen Seite der Ankerplatte drücken das Stellglied bzw. die Ankerplatte in eine Neutralstellung, wenn die Elektromagneten stromlos sind. Durch Bestromen der Elektromagneten kann das Stellglied bzw. die Ankerplatte aus der Neutralstellung ausgelenkt werden. An einem Ende einer der beiden Federn ist ein Anschlagelement vorgesehen. Durch Verstellen des Anschlagelements kann die Vorspannung der Federn und somit die Lage der Neutralstellung des Stellglieds in Bezug auf die Elektromagneten verändert werden.The invention is based on an electromagnetic valve drive device with an axially displaceable actuator for opening or closing a valve. The actuator has an anchor plate. Further, two successively arranged in the direction of displacement and spaced apart electromagnets are provided, wherein the one electromagnet is disposed on the valve near side of the armature plate and the other electromagnet on the valve remote side of the armature plate. Two successively arranged in the direction of displacement springs, one on the valve near side of the armature plate and the other on the far side of the armature plate push the actuator or the armature plate in a neutral position when the electromagnets are de-energized. By energizing the electromagnet, the actuator or the armature plate can be deflected from the neutral position. At one end of one of the two springs a stop element is provided. By Adjusting the stop element, the bias of the springs and thus the position of the neutral position of the actuator can be changed with respect to the electromagnet.

Der Kern der Erfindung besteht nun darin, dass das Anschlagelement in Verschieberichtung des Stellglieds verschieblich angeordnet ist und dass eine Betätigungseinrichtung vorgesehen ist, die ein Verschieben des Anschlagelements während des Betriebs der Ventiltriebvorrichtung ermöglicht. Während des Betriebs des Motors ist also eine Verstellung der Neutralstellung des Stellglieds möglich.The essence of the invention consists in the fact that the stop element is arranged displaceably in the direction of displacement of the actuator and that an actuating device is provided which allows a displacement of the stop element during operation of the valve drive device. During operation of the engine so an adjustment of the neutral position of the actuator is possible.

In Abhängigkeit vom Lastzustand kann somit die Neutralstellung des Stellglieds bzw. der Ankerplatte verändert werden. D.h., die Neutralstellung, in der sich die Kräfte der beiden Federn gerade aufheben, kann in Richtung des ventilnahen Elektromagneten oder in Richtung des ventilfernen Elektromagneten verschoben werden. Je nachdem, ob es sich bei dem Ventil um ein Einlassventil oder um ein Auslassventil handelt, ist es in Abhängigkeit vom Lastzustand des Verbrennungsmotors aus energetischen Gründen sinnvoll, die Neutralstellung des Stellglieds während des Betriebs zu verändern.Depending on the load condition, the neutral position of the actuator or the armature plate can thus be changed. That is, the neutral position, in which cancel the forces of the two springs, can be moved in the direction of the solenoid close to the valve or in the direction of the electromagnet remote from the valve. Depending on whether the valve is an inlet valve or an outlet valve, it makes sense, depending on the load condition of the internal combustion engine, to change the neutral position of the actuator during operation for energetic reasons.

Beim Auslassventil ist es sinnvoll, beim Start des Motors bzw. im Niedriglastbetrieb das Stellglied bzw. die Ankerplatte in eine Neutralstellung zu bringen, die der Mittelstellung zwischen den beiden Elektromagneten entspricht. In dieser Neutralstellung ist die Ankerplatte gleich weit von beiden Elektromagneten entfernt, sofern diese nicht bestromt sind. Im Lastbetrieb hingegen ist es energetisch vorteilhaft, wenn die Neutralstellung des Stellglieds zum ventilnahen Elektromagneten hin verschoben wird. Dies ist durch Betätigen des Betätigungselementes möglich. Durch Betätigen des Betätigungselementes kann das an einem Federende anliegende Anschlagelement in Verschieberichtung des Stellglieds verschoben werden. Durch Verschieben des Anschlagelements kann die Vorspannung der beiden Federn und somit die Lage der Neutralstellung verändert werden.When the exhaust valve, it makes sense to bring the actuator or the armature plate in a neutral position at the start of the engine or in low load operation, which corresponds to the center position between the two electromagnets. In this neutral position, the anchor plate is equidistant from both electromagnets, unless they are energized. In load operation, however, it is energetically advantageous if the neutral position of the actuator is moved towards the solenoid close to the valve. This is possible by operating the actuating element. By actuating the actuating element, the abutting stop element at a spring end can be displaced in the direction of displacement of the actuator. By moving the stop element, the bias of the two springs and thus the position of the neutral position can be changed.

Bei einem Einlassventil hingegen ist es vorteilhaft, wenn das Stellglied bzw. die Ankerplatte nach dem Motorstart bzw. im Leerlauf und im Teillastbetrieb sich nicht in der Mittelstellung zwischen den beiden Elektromagneten befindet, sondern zum ventilfernen Elektromagneten hin verschoben ist. Durch Betätigen der Betätigungseinrichtung kann im Lastbetrieb kann das Stellglied so verschoben werden, dass seine Neutralstellung der Mittelstellung zwischen den beiden Elektromagneten entspricht.In an intake valve, however, it is advantageous if the actuator or the armature plate is not in the middle position between the two electromagnets after engine start or idle and in partial load operation, but for far away from the electromagnet. By operating the actuator can be moved in load operation, the actuator so that its neutral position corresponds to the center position between the two electromagnets.

Nach einer Weiterbildung der Erfindung ist eine hydraulische Betätigungseinrichtung vorgesehen. Vorzugsweise weist die Betätigungseinrichtung einen Schwenkhebel mit einem kurzen und einem langen Hebelarm auf. Der kurze Hebelarm wirkt mit dem Anschlagelement der Betätigungseinrichtung zusammen. Der lange Hebelarm hingegen wird durch einen Hydraulikzylinder mit einer Verstellkraft beaufschlagt. Der Hydraulikzylinder kann über ein absperrbares Magnetventil mit dem Motorölkreislauf verbunden sein. Im Lastbetrieb des Verbrennungsmotors ist der Motoröldruck hinreichend groß, so dass bei geöffnetem Magnetventil der Schwenkarm zur Verstellung der Neutralstellung betätigbar ist.According to a development of the invention, a hydraulic actuator is provided. Preferably, the actuating device has a pivoting lever with a short and a long lever arm. The short lever arm cooperates with the stop element of the actuator. The long lever arm, however, is acted upon by a hydraulic cylinder with an adjustment. The hydraulic cylinder can be connected via a lockable solenoid valve with the engine oil circuit. In load operation of the internal combustion engine, the engine oil pressure is sufficiently large, so that when the solenoid valve is open, the swivel arm can be actuated to adjust the neutral position.

Da der erforderliche Verstellweg des Stellglieds von der einen zur anderen Neutralstellung nur wenige Zehntel Millimeter beträgt und die Verstellkräfte relativ groß sind, ist es zweckmäßig, einen Schwenkhebel mit einem Übersetzungsverhältnis von 10 bis 15 vom langen auf den kurzen Hebelarm zu verwenden. Durch die Wahl eines Übersetzungsverhältnisses von 10 bis 15 kann die hohe Kraft der Ventilfeder auf ein niedrigeres Kraftniveau verringert werden, welches dann durch den Motoröldruck und einen Kolben mit relativ kleiner Kolbenfläche aufgebracht werden kann. Durch ein derart großes Übersetzungsverhältnis werden auch die Auswirkungen der Toleranzen im Kolbenweg verringert, die im umgekehrten Verhältnis zum Übersetzungsverhältnis sich auf die Neutrallage auswirken und somit die Fertigung der Hydraulikeinheit vereinfachen.Since the required adjustment of the actuator from one to the other neutral position is only a few tenths of a millimeter and the adjusting forces are relatively large, it is expedient to use a pivot lever with a gear ratio of 10 to 15 from the long to the short lever arm. By choosing a gear ratio of 10 to 15, the high force of the valve spring can be reduced to a lower level of force, which can then be applied by the engine oil pressure and a piston with a relatively small piston area. Such a large transmission ratio also reduces the effects of the tolerances in the piston travel which, in inverse proportion to the gear ratio, affect the neutral position and thus simplify the manufacture of the hydraulic unit.

Bei einer Betätigung der Betätigungsvorrichtung wird das eine Ende der oberen bzw. ventilfernen Feder mittels des Schwenkhebels um den doppelten Betrag der gewünschten Neutrallagenverstellung in Verschieberichtung verschoben.Upon actuation of the actuator, the one end of the upper or remote from the valve spring by means of the pivot lever is shifted by twice the amount of the desired neutral position adjustment in the direction of displacement.

Zur Feinjustierung der Neutralstellung kann am kurzen Hebelarm des Schwenkhebels eine Einstellschraube vorgesehen sein. Die Einstellschraube kann unmittelbar in den kurzen Hebelarm eingeschraubt sein und gegen das Anschlagelement der ventilfernen Feder drücken. Vorzugsweise ist die Einstellschraube durch eine Schraubensicherung gegen Verdrehen gesichert, beispielsweise durch eine Kontermutter. Eine solche Betätigungseinrichtung kann einem einzigen Ventil zugeordnet sein. Vorzugsweise ist eine solche Betätigungseinrichtung aber zur Verstellung der Stellglieder zweier oder mehrerer Ventile vorgesehen sein.For fine adjustment of the neutral position, an adjusting screw can be provided on the short lever arm of the pivot lever. The adjusting screw can be screwed directly into the short lever arm and against the stop element Press the valve remote spring. Preferably, the adjusting screw is secured by a screw lock against rotation, for example by a lock nut. Such an actuator may be associated with a single valve. Preferably, however, such an actuating device may be provided for adjusting the actuators of two or more valves.

Bei Verwendung einer hydraulischen Betätigungseinrichtung können die den Einlassventilen bzw. den Auslassventilen zugeordneten Hydraulikkolben jeweils durch eine gemeinsame Ölleitung miteinander verbunden sein und über ein einfaches Magnetventil an den Motorölkreislauf angeschlossen sein.When using a hydraulic actuator, the hydraulic piston associated with the intake valves and the exhaust valves can each be connected to each other by a common oil line and connected via a simple solenoid valve to the engine oil circuit.

Nach einer Weiterbildung der Erfindung ermöglicht die Betätigungseinrichtung eine "Zweipunktverstellung". D.h., das Stellglied ist zwischen genau zwei Neutralstellungen umschaltbar. In diesem Fall ist keine Sensorik zur Detektierung der Neutrallagenstellung erforderlich.According to a development of the invention, the actuator allows a "two-point adjustment". That is, the actuator is switchable between exactly two neutral positions. In this case, no sensors are required to detect the neutral position.

Alternativ dazu kann durch entsprechende Steuerung des Hydraulikdrucks auch eine kontinuierliche Neutrallagenverstellung vorgesehen sein. D.h., es können nicht nur eine obere und eine untere Neutrallage eingestellt werden, sondern auch beliebige dazwischen liegende Neutralstellungen.Alternatively, by means of appropriate control of the hydraulic pressure, a continuous neutral position adjustment can also be provided. That is, not only upper and lower neutral positions can be set, but also any intermediate neutral positions.

Im folgenden wird die Erfindung im Zusammenhang mit der Zeichnung näher erläutert. Es zeigen:

Figur 1
eine perspektivische Ansicht einer Neutrallagenverstelleinrichtung;
Figur 2
die Neutrallagenverstelleinrichtung im Querschnitt in einer unbetätigten Stellung;
Figur 3
die Neutrallagenverstelleinrichtung in einer betätigten Stellung;
Figur 4
einen Schnitt durch die Ventiltriebvorrichtung bei geschlossenem Ventil; und
Figur 5
eine Draufsicht auf die Neutrallagenverstelleinrichtung.
In the following the invention will be explained in connection with the drawing. Show it:
FIG. 1
a perspective view of a neutral position adjustment device;
FIG. 2
the neutral position adjustment device in cross-section in an unactuated position;
FIG. 3
the neutral position adjusting device in an actuated position;
FIG. 4
a section through the valve drive device with the valve closed; and
FIG. 5
a plan view of the neutral position adjustment.

Figur 1 zeigt einen Aktuator 1 einer elektromagnetischen Ventiltriebvorrichtung für einen Verbrennungsmotor. Der Aktuator 1 ist zur Betätigung von zwei Ventilen, z.B. von zwei Auslassventilen oder zwei Einlassventilen vorgesehen. Die Ventile sind in der gezeigten Darstellung nicht dargestellt. Für die Ventilbetätigung ist jedem Ventil ein Stellglied zugeordnet, das durch eine Ankerstange 2 (vgl. Figuren 2, 3) und eine Ankerplatte 3 (Figur 4) gebildet ist. Auf beiden Seiten der Ankerplatte ist jeweils eine Ventilfeder vorgesehen, wobei in den Figuren 1 bis 3 jeweils nur eine obere Ventilfeder dargestellt ist, die auch als ventilferne Ventilfeder 4, 5 bezeichnet werden kann. Der prinzipielle Aufbau eines solchen Stellglieds mit zwei entgegengesetzt wirkenden Ventilfedern ist beispielsweise aus der DE 694 09 485 T2 bekannt, auf die, wie bereits erwähnt, in vollem Umfang Bezug genommen wird. Die beiden Ventilfedern, von denen hier jeweils nur die obere Ventilfeder 4, 5 dargestellt ist, drücken die Ankerstange 2 mit ihrer Ankerplatte 3 in eine Neutralstellung. In der Neutralstellung heben sich die Kräfte der einander entgegenwirkenden oberen bzw. unteren Ventilfedern gerade auf. In der Neutralstellung der Ankerstange bzw. der Ankerplatte ist das mit der Ankerstange zusammenwirkende Ventil teilweise geöffnet, z.B. halb geöffnet. Zum vollständigen Öffnen bzw. Schließen der Ventile ist pro Ventil jeweils ein ventilnaher und ein ventilferner Elektromagnet vorgesehen. FIG. 1 shows an actuator 1 of an electromagnetic valve drive device for an internal combustion engine. The actuator 1 is provided for actuating two valves, for example two exhaust valves or two intake valves. The valves are not shown in the illustration shown. For valve actuation, an actuator is assigned to each valve, which by an anchor rod 2 (see. FIGS. 2, 3 ) and an anchor plate 3 ( FIG. 4 ) is formed. On both sides of the anchor plate a valve spring is provided in each case, wherein in the FIGS. 1 to 3 in each case only an upper valve spring is shown, which can also be referred to as valve-distal valve spring 4, 5. The basic structure of such an actuator with two oppositely acting valve springs is for example from the DE 694 09 485 T2 as already mentioned, to which reference is made in its entirety. The two valve springs, of which only the upper valve spring 4, 5 is shown here, press the anchor rod 2 with its armature plate 3 in a neutral position. In the neutral position, the forces of the opposing upper and lower valve springs cancel out. In the neutral position of the anchor rod or the anchor plate which cooperates with the anchor rod valve is partially open, eg half open. For complete opening or closing of the valves, one valve-near and one valve-remote electromagnet is provided per valve.

In den Figuren 2 und 3 ist jeweils nur der oberhalb der Ankerplatte angeordnete ventilferne Elektromagnet 6 dargestellt.In the FIGS. 2 and 3 in each case only the valve-remote electromagnet 6 arranged above the armature plate is shown.

In Figur 4 ist zusätzlich der ventilnahe Elektromagnet 7 dargestellt. Die beiden Elektromagneten 6, 7 sind in Verschieberichtung der Ankerstange 2 bzw. der Ankerplatte 3 voneinander beabstandet. Im Schaltzustand der Figur 4 ist der ventilferne Elektromagnet 6 bestromt. D.h., die Ankerplatte 3 wird vom ventilfernen Elektromagneten angezogen und das mit der Ankerstange 2 verbundene Ventil ist geschlossen.In FIG. 4 In addition, the valve near solenoid 7 is shown. The two electromagnets 6, 7 are spaced apart in the direction of displacement of the anchor rod 2 and the anchor plate 3. In the switching state of FIG. 4 the remote valve electromagnet 6 is energized. That is, the anchor plate 3 is attracted to the valve remote solenoid and connected to the anchor rod 2 valve is closed.

Bei dem gezeigten Ausführungsbeispiel ist am ventilfernen Ende der Ankerstange 2 ein Anschlagelement 8 angebracht, das zur Abstützung der oberen Ventilfeder 4, 5 vorgesehen ist. Ferner ist ein weiteres Anschlagelement 9 vorgesehen. Die ventilferne Ventilfeder 4 ist somit zwischen den beiden Anschlagelementen 8, 9 eingespannt. Das obere Anschlagelement 9 wird durch einen Schwenkhebel 10 bzw. 10' beaufschlagt. Der Schwenkhebel 10 bzw. 10' weist einen kurzen Hebelarm 11 bzw. 11' und einen langen Hebelarm 12 bzw. 12' auf. In den kurzen Hebelarm 11 bzw. 11' ist jeweils eine Justierschraube 13 bzw. 13' eingeschraubt, die unmittelbar gegen das obere Anschlagelement 9 bzw. 9' drückt. Durch Verdrehen der Einstellschraube 13 bzw. 13' kann die Neutralstellung der Ankerstange 2 bzw. der Ankerplatte 3 feinjustiert werden.In the embodiment shown, a stop element 8 is attached to the valve distal end of the anchor rod 2, which is provided for supporting the upper valve spring 4, 5. Furthermore, a further stop element 9 is provided. The remote valve Valve spring 4 is thus clamped between the two stop elements 8, 9. The upper stop element 9 is acted upon by a pivot lever 10 or 10 '. The pivoting lever 10 or 10 'has a short lever arm 11 or 11' and a long lever arm 12 or 12 '. In the short lever arm 11 and 11 'is in each case an adjusting screw 13 or 13' screwed, which presses directly against the upper stop element 9 and 9 '. By turning the adjusting screw 13 or 13 ', the neutral position of the anchor rod 2 and the anchor plate 3 can be finely adjusted.

Wie am besten aus Figur 5 ersichtlich ist, sind die Schwenkhebel 10 jeweils um eine gestrichelt eingezeichnete Schwenkachse 14, 14' schwenkbar, die den Schwenkhebel 10, 10' in den kurzen Hebelarm 11, 11' und in den langen Hebelarm 12, 12' unterteilt.How best FIG. 5 it can be seen, the pivot levers 10 are each about a dashed lines pivot axis 14, 14 'pivotally, the pivot lever 10, 10' in the short lever arm 11, 11 'and in the long lever arm 12, 12' divided.

Wie am besten aus den Figuren 2, 3 und 5 ersichtlich ist, werden die beiden langen Hebelarme 12, 12' durch einen gemeinsamen hydraulisch beaufschlagten Kolben 15 beaufschlagt. Der Kolben 15 kann über ein absperrbares Magnetventil an den Motorölkreislauf angeschlossen werden.How best of the FIGS. 2, 3 and 5 it can be seen, the two long lever arms 12, 12 'acted upon by a common piston 15 acted upon hydraulically. The piston 15 can be connected via a lockable solenoid valve to the engine oil circuit.

Figur 2 zeigt den deaktivierten Zustand. In diesem Zustand ist der Kolben 15 nicht mit Motoröldruck beaufschlagt. Figur 3 hingegen zeigt einen Zustand, in dem der Hydraulikkolben 15 durch Motoröldruck nach oben verschoben ist. Dementsprechend ist der Schwenkhebel 10 entgegen dem Uhrzeigersinn verschwenkt. Über den kurzen Hebelarm 11 des Schwenkhebels 10 wird das obere Anschlagelement 9 nach unten gedrückt. Dadurch wird die ventilferne Feder 4 und die zugeordnete ventilnahe Feder 5 zusammengedrückt. D.h., die beiden Federn werden weiter vorgespannt. Zusätzlich wird dadurch die Ankerstange 2 bzw. die Ankerplatte 3 in Richtung des ventilnahen Elektromagneten (vgl. Figur 4) verschoben. Durch Betätigen des Kolbens 15 kann also die Neutralstellung der Ankerstange 2 bzw. der Ankerplatte 3 innerhalb des Zwischenraums 16 (vgl. Figur 4), der zwischen dem ventilfernen Elektromagneten 6 und dem ventilnahen Elektromagneten 7 vorgesehen ist, verändert werden. FIG. 2 shows the deactivated state. In this state, the piston 15 is not subjected to engine oil pressure. FIG. 3 On the other hand, shows a state in which the hydraulic piston 15 is displaced upward by engine oil pressure. Accordingly, the pivot lever 10 is pivoted counterclockwise. Over the short lever arm 11 of the pivot lever 10, the upper stop element 9 is pressed down. As a result, the valve-distal spring 4 and the associated valve near spring 5 is compressed. That is, the two springs are biased further. In addition, thereby the anchor rod 2 and the anchor plate 3 in the direction of the valve near solenoid (see. FIG. 4 ) postponed. By pressing the piston 15 so the neutral position of the anchor rod 2 and the anchor plate 3 within the gap 16 (see. FIG. 4 ), which is provided between the valve remote electromagnet 6 and the valve-near electromagnet 7, to be changed.

Alternativ zu dem hier gezeigten Ausführungsbeispiel kann auch jedem Ventil oder genauer gesagt jeder Ventilstange bzw. jeder Ankerplatte eine separate Betätigungseinrichtung, d.h. ein separater Kolben 15 zugeordnet sein.As an alternative to the embodiment shown here, each valve, or more precisely each valve stem or each anchor plate, may also be provided with a separate actuator, i. be associated with a separate piston 15.

Vollständigkeitshalber wird noch auf einen Ölzulauf 17 (vgl. Figur 1, 4) hingewiesen, über den der Ventiltrieb mit Motoröl versorgt wird.For completeness sake is still on an oil inlet 17 (see. FIG. 1 . 4 ), via which the valve train is supplied with engine oil.

Claims (12)

  1. An electromagnetic valve drive device for an internal combustion engine, comprising an axially movable actuator (2, 3) for opening or closing a valve, wherein the actuator (2, 3) has a backing plate (3),
    two spaced-apart electromagnetic valves (6, 7) disposed one behind the other in the direction of movement, wherein one electromagnet (7) is
    disposed on the side of the backing plate (3) near the valve and the other electromagnet (6) is disposed on the side of the backing plate remote from the valve,
    two springs (4) disposed one behind the other in the direction of movement, wherein one spring is disposed on the side of the backing plate (3) near the valve and the other on the side of the backing plate (3) remote from the valve, the valves holding the actuator (2, 3) in a neutral position when the electromagnets (6, 7) are currentless and moving the actuator (2, 3) out of its neutral position when the electromagnets (6, 7) are energised,
    an adjusting element (9) adjoining the end of one of the two springs (4) remote from the backing plate, wherein the adjusting element (9, 10) can be adjusted in order to alter the prestress of the springs and the position of the neutral position of the actuator (2, 3), wherein
    the adjusting element (9) is movable in the direction of adjustment and an operating device (10, 15) is provided for moving the adjusting element (9) during operation of the valve drive device and thus adjusting the neutral position,
    characterised in that
    the operating device comprises a rocking lever (10) with a short lever arm (11) and a long lever arm (12), wherein the short lever arm (11) cooperates with the adjusting element (9) and the long lever arm (12) can be subjected to an adjusting force by a hydraulic piston.
  2. An electromagnetic valve drive arrangement according to claim 1, wherein the actuator (2, 3) is adapted to move the valve out of its neutral position into an open position and a closed position.
  3. An electromagnetic valve drive device according to claim 1 or claim 2, wherein in a neutral position of the actuator (2, 3) the backing plate (3) is equidistant from the two electromagnets (6, 7) if the operating device (10, 15) is not activated.
  4. An electromagnetic valve drive device according to claim 3, wherein the valve is an outlet valve.
  5. An electromagnetic valve drive device according to any of claims 1 to 4, wherein by actuating the operating device (10, 15) the actuator (2, 3) is movable into another neutral position in which the distance of the backing plate (3) from the electromagnet (7) near the valve is less than the distance of the backing plate (3) from the electromagnet (6) remote from the valve.
  6. An electromagnetic valve drive device according to claim 1 or claim 2, wherein when the actuator (2, 3) is in a neutral position the backing plate (3) is at different distances from the two electromagnets (6, 7) when the operating device (10, 15) is not actuated.
  7. An electromagnetic valve drive device according to claim 6, wherein by actuating the operating device (10, 15) the actuator (2, 3) can be moved into a different neutral position in which the backing plate (3) is equidistant from the two electromagnets.
  8. An electromagnetic valve drive device according to claim 6, wherein in the neutral position of the actuator (2, 3) the distance between the backing plate and the electromagnet (7) near the valve is greater than the distance between the backing plate (3) and the electromagnet (6) remote from the valve.
  9. An electromagnetic valve drive device according to any of claims 6 to 8, wherein the valve is an inlet valve.
  10. An electromagnetic valve drive device according to any of claims 1 to 10, wherein the hydraulic piston (15) is disposed in a hydraulic cylinder connected to the engine oil circuit.
  11. An electromagnetic valve drive device according to claim 10, wherein the hydraulic cylinder is connected to the engine oil circuit by a solenoid on-off valve.
  12. An electromagnetic valve drive device according to any of claims 1 to 11, wherein an adjusting screw (13) on the short lever arm (11) is provided for fine adjustment of the neutral position.
EP03750561A 2002-10-17 2003-09-17 Electromagnetic valve operating device with adjustable neutral position Expired - Lifetime EP1552117B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10248330 2002-10-17
DE10248330A DE10248330A1 (en) 2002-10-17 2002-10-17 Electromagnetic valve train device with adjustable neutral position
PCT/EP2003/010330 WO2004035999A1 (en) 2002-10-17 2003-09-17 Electromagnetic valve operating device with adjustable neutral position

Publications (2)

Publication Number Publication Date
EP1552117A1 EP1552117A1 (en) 2005-07-13
EP1552117B1 true EP1552117B1 (en) 2008-04-09

Family

ID=32049337

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03750561A Expired - Lifetime EP1552117B1 (en) 2002-10-17 2003-09-17 Electromagnetic valve operating device with adjustable neutral position

Country Status (5)

Country Link
US (1) US7188823B2 (en)
EP (1) EP1552117B1 (en)
JP (1) JP4324556B2 (en)
DE (2) DE10248330A1 (en)
WO (1) WO2004035999A1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3024109A1 (en) * 1980-06-27 1982-01-21 Pischinger, Franz, Prof. Dipl.-Ing. Dr.Techn., 5100 Aachen ELECTROMAGNETIC OPERATING DEVICE
DE3920931A1 (en) * 1989-06-27 1991-01-03 Fev Motorentech Gmbh & Co Kg ELECTROMAGNETIC OPERATING DEVICE
JP3106890B2 (en) * 1995-01-11 2000-11-06 トヨタ自動車株式会社 Valve drive for internal combustion engine
DE19723792C1 (en) * 1997-06-06 1998-07-30 Daimler Benz Ag Electromagnetic actuator adjuster e.g. for piston engine gas-exchange valve
JP3921311B2 (en) * 1998-10-30 2007-05-30 株式会社日立製作所 Electromagnetic drive device for engine valve
JP3935008B2 (en) * 2002-07-16 2007-06-20 本田技研工業株式会社 Engine valve gear

Also Published As

Publication number Publication date
EP1552117A1 (en) 2005-07-13
DE50309591D1 (en) 2008-05-21
JP4324556B2 (en) 2009-09-02
DE10248330A1 (en) 2004-04-29
WO2004035999A1 (en) 2004-04-29
US7188823B2 (en) 2007-03-13
US20050178990A1 (en) 2005-08-18
JP2006503211A (en) 2006-01-26

Similar Documents

Publication Publication Date Title
DE112004001450B4 (en) Device for an internal combustion engine
DE19650987C2 (en) Brake system for an internal combustion engine
DE3445951C2 (en)
EP1001143A2 (en) Valve control for intake and exhaust valves in internal combustion engines
DE19543080C2 (en) Device for controlling valves of an internal combustion engine, in particular the gas supply valve of a gas engine
DE29604946U1 (en) Electromagnetic actuator for a gas exchange valve with valve clearance compensation
DE19642059C2 (en) Valve actuation device for an engine
DE69805352T2 (en) Valve actuation device that can be switched to two different valve strokes
WO2019007453A1 (en) Variable valve drive of a combustion piston engine
DE60109883T2 (en) Valve actuator with a clearance compensation element
DE3239941A1 (en) Device for switching off the valve mechanism of an internal combustion engine
DE19621951C1 (en) Control device for hydraulic valves, especially in engines
DE102020100430A1 (en) Electromechanical valve actuation assembly
WO1997021910A1 (en) Means for the actuation of valves on a reciprocating engine with a variable valve lift, in particular a reciprocating internal combustion engine
WO2003042509A1 (en) Device for the control of at least one gas exchange valve
EP1264968B1 (en) Apparatus for actuating a valve with variable lift in an internal combustion engine
DE10127205A1 (en) Non-camshaft control of gas changing valve in an IC engine, has hydraulic working cylinder operating valve with feed line, control valve has integrated adjustable throttle for altering flow resistance to feed line
EP1974131B1 (en) Gas exchange valve actuating device
DE10105807C1 (en) Pivot lever for operation of internal combustion engine valve has mechanical valve play setting element using rotatable hollow cylinder with planar surfaces for operation of valve shaft
DE102017129424A1 (en) Variable valve train of a combustion piston engine
DE102010006037B4 (en) Valve device for an internal combustion engine
WO2020057688A1 (en) Device for carrying out multi-cycle engine braking
DE19701203A1 (en) Variable valve control for internal combustion engine
DE19607019A1 (en) Electromagnetic operating device for IC engine gas changing valve
EP1552117B1 (en) Electromagnetic valve operating device with adjustable neutral position

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

17P Request for examination filed

Effective date: 20050224

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

RBV Designated contracting states (corrected)

Designated state(s): DE FR GB IT

GRAC Information related to communication of intention to grant a patent modified

Free format text: ORIGINAL CODE: EPIDOSCIGR1

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

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

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 50309591

Country of ref document: DE

Date of ref document: 20080521

Kind code of ref document: P

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20080501

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

Effective date: 20090112

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20140919

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20140926

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20140924

Year of fee payment: 12

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20150928

Year of fee payment: 13

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50309591

Country of ref document: DE

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

Effective date: 20150917

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20150917

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150917

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160401

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20170531

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: 20160930