EP1255025A2 - Device for converting a rotational movement to reciprocation movement - Google Patents

Device for converting a rotational movement to reciprocation movement Download PDF

Info

Publication number
EP1255025A2
EP1255025A2 EP02009735A EP02009735A EP1255025A2 EP 1255025 A2 EP1255025 A2 EP 1255025A2 EP 02009735 A EP02009735 A EP 02009735A EP 02009735 A EP02009735 A EP 02009735A EP 1255025 A2 EP1255025 A2 EP 1255025A2
Authority
EP
European Patent Office
Prior art keywords
cam
cam element
friction
inclined surfaces
peripheral surface
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.)
Granted
Application number
EP02009735A
Other languages
German (de)
French (fr)
Other versions
EP1255025A3 (en
EP1255025B1 (en
Inventor
Stefan Battlogg
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT02009735T priority Critical patent/ATE283967T1/en
Publication of EP1255025A2 publication Critical patent/EP1255025A2/en
Publication of EP1255025A3 publication Critical patent/EP1255025A3/en
Application granted granted Critical
Publication of EP1255025B1 publication Critical patent/EP1255025B1/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
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/08—Shape of cams
    • 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
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • 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
    • F01L1/30—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of positively opened and closed valves, i.e. desmodromic valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2301/00—Using particular materials

Definitions

  • the invention relates to a device for converting a rotary movement into a back and forth movement, in particular a valve train for Internal combustion engines of motor vehicles, a cam control from Machine tools or the like, with a driven cam element and with a slidable or pivotable from the cam element Cam follower, in particular a tappet or the like, which Cam element is rotatably arranged in a flexible enclosing element movable in a plane perpendicular to the axis of rotation of the cam element and with the cam follower is connected, and being in the peripheral surface of the Cam element and / or the inner surface of the flexible enclosing element at least one opening for a friction-reducing medium is provided is.
  • WO 01/12958 describes a valve train with a cam element and a flexible one Enclosure element described, in which the friction-reducing medium, such as Oil, air or the like.
  • the friction-reducing medium such as Oil, air or the like.
  • a hollow carrier shaft and the cam element is supplied, wherein the carrier shaft and the cam element aligned holes exhibit.
  • the friction-reducing medium gets into the gap between the one formed for example as a ring or band Enclosure element and the cam element.
  • the main requirement for reducing the friction between two surfaces sliding on each other is perfect lubrication.
  • the two faces are supposed to be perfect through a film made of the friction-reducing medium be separated from each other in order to increase bearing friction and material wear minimize.
  • oil such as lubricating oil
  • a supporting gas layer can be formed.
  • friction characteristics in tribological systems Properties of the bearing base body, the bearing counter body and the medium both bearing bodies are assumed to be dimensionally stable, i.e. the sliding surfaces do not change their shape in the direction of movement. Only this allows to fulfill a basic condition, namely the training of oneself in Direction of movement narrowing gap that creates a lubricating wedge.
  • the cam element is now dimensionally stable, not the enclosing element, however, which is so flexible in the circumferential direction must be the oscillating movement for the positive guidance of the Can exercise cam follower. Since the enclosing element from back and forth The resulting cam follower is then exposed to relatively high tensile forces is when the push-off acceleration is slowed down, that becomes the Connection area opposite part of the enclosing element firmly pressed the circumference of the cam element. The opposite is the case Part of the enclosing element shortly before the connection area Return to the starting position exposed to correspondingly high pressure forces because the return acceleration is braked, and to the extent of Pressed cam element.
  • the invention has now set itself the task in a device of the beginning mentioned type to significantly improve the frictional relationships, and between at least the majority of the sliding surfaces a load-bearing layer of the to form a friction-reducing medium, in particular a lubricating oil, so that Friction coefficients of a fluid friction can be reached.
  • this object is achieved in that the cam element and / or the enclosing element has surfaces that face the peripheral surface of the Cam element inclined in the circumferential direction and in succession in the circumferential direction are arranged.
  • the flexible enclosing element in particular a loop made from high tensile strength fibers, for example made of Kevlar, glass, carbon, high modulus polyethylene, polyester, boron, Aramid fibers or similar, essentially length-constant fibers or Combinations of these fibers is also flexible across the circumferential direction, it is from Advantage to arrange the inclined surfaces at least in two lanes and through the tracks to separate closed or interrupted webs in the circumferential direction.
  • the traces can be offset in the circumferential direction so that the inclined surfaces each other overlap.
  • the coefficient of friction can be further reduced if the circumferential surface that Inner surface and / or the inclined surfaces have a friction-reducing microstructure exhibit.
  • the microstructure consists in particular of longitudinal grooves, which are modeled on the Shark skin can be found, and through which the frictional resistance of the boundary layers is reduced by about 10%.
  • Such as fluid dynamic surfaces designated areas are used to reduce the flow resistance of bodies around which water or air flows (aircraft wings, ship hulls etc.)
  • Mouth openings for the friction-reducing medium to be supplied preferably provided in the inclined surfaces. If the supply of the friction-reducing medium takes place via the rotating cam elements, so it is preferably provided that the cam element has at least one bore, which leads to the mouth opening and with a hollow support shaft of the cam element is connected to the flow.
  • valve drives are designed Invention described with reference to the figures of the accompanying drawings, without being limited to it.
  • Fig. 4 shows the components of a possible embodiment of a valve train for a Valve or a pair of valves, being for an internal combustion engine of a motor vehicle the required number of cam elements 2 on a hollow carrier shaft 1 (Fig. 2) are provided.
  • the or each cam member 2 is substantially on the peripheral surface 94 of the cam element 2 surrounding encircling element 4, the out a flexible, flexible material that is as tensile as possible in the circumferential direction, in particular from a closed fabricated in a textile reworking technique Loop consists of fibers with a high length constancy.
  • the cam element 2 can therefore with continuous pulsating deformation of the enclosing element 4 rotate in the enclosing element 4 about its axis of rotation 8.
  • the Enclosure element 4 is only indicated by the connection to one Cam follower 10 (Fig. 1) prevented from rotating, and is with the Cam follower pivotally connected.
  • FIGS. 6 to 8 also show strips having inclined surfaces, which on Attached circumference of the cam element 2, in particular in a circumferential groove can be used.
  • the supply of the friction-reducing medium can either be via the Cam element 2 or take place over the enclosing element 4, wherein it it is irrelevant whether orifices 98, 99 in which the inclined surfaces 96, 97 having element 2, 4 are provided or not. If mouth openings are 98, 99 in the element 2, 4 having the inclined surfaces 96, 97, see above they lie at the lowest point of the inclined surface, as in FIGS. 3 and 9 can be seen.
  • a hollow carrier shaft 1 which in the area of Cam element 2 has two radial bores 30, which in a circumferential groove lead.
  • the cam element 2 is provided with a plurality of bores 3 which are radial to Axis of rotation 8 and / or extend perpendicular to the peripheral surface 94, and that friction-reducing medium flows out of the hollow carrier shaft 1 over the Circumferential groove and through the holes 3 to the mouth openings 98, where Form 96 grease wedges over the inclined surfaces.
  • the cam element 2 can also have an inner annular groove.
  • a flexible outer supply line is required, which on a Place enters the enclosing element 4 and in the mouth opening 99 (FIG. 9) ends at the deepest point of an inclined surface 97 or if that Enclosure element 4 has no inclined surfaces 97 at any point the inner surface 95 is provided.
  • Mouth opening 99 is formed, for example two diametrically opposite one another opposite.
  • the inclined surfaces 96, 97 can be spaced one after the other be designed so that narrow crossbars remain.
  • the crossbars can be opened a supportive line of contact may be reduced when the inclined surfaces 96, 97 are arranged sawtooth.
  • a connecting channel between everyone Mouth openings 98, 99, in particular one that interrupts the transverse webs Circumferential groove of the cam element 2 is also possible, so that in particular the supply through the enclosing element 2 only one or two Mouth openings 99 are sufficient.
  • Surfaces 96, 97 inclined on both sides are also conceivable if the direction of rotation should be disregarded during assembly.
  • a opposing arrangement, which is independent of the direction of rotation, is also possible if the peripheral surface 94 and the inner surface 95 with inclined surfaces 96, 97 are provided.
  • angles of inclination of the surfaces 96, 97 are exaggerated shown to show them.
  • the angles of inclination are in a size of one up to three angular minutes are provided, which are not significantly below or above may be.
  • FIGS. 4 and 7 show a series of rectangular inclined surfaces 96, 97, which of Edge and transverse webs are limited, which in the peripheral surface 94 and the Inner surface 95 lie.
  • Fig. 8 shows an embodiment with an additional, separating Center land, so that the inclined surfaces 96, 97 divided into two lanes and half are offset.
  • Fig. 6 shows an embodiment which has only cross webs and, as already mentioned, in particular also form a peripheral insert of the cam element 2 can, so that the embodiment shown in Fig. 4 also arises.
  • All tribological surfaces 94, 95, 96 and 97 can also have one have friction-reducing microstructure, for example longitudinal grooves, So-called riblets, as they are known from the surface of the shark skin.
  • FIGS. 1 to 9 are not only for valve control of internal combustion engines, but everywhere where a desmodromic conversion of a rotary motion into a back and forth Moving movement takes place, for example for cam controls from Machine tools, for special gears, etc.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transmission Devices (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

Device for converting rotational movement into reciprocating movement comprises a driven cam element (2) rotatably arranged in a flexible sleeve element (4), and a cam follower element, especially a tappet. The cam element and/or the sleeve element have surfaces (96) angled toward the peripheral surface (94) of the cam element in the peripheral direction and arranged next to each other in the peripheral direction. Preferred Features: The angled surfaces are stepped in a saw tooth manner and are arranged in two adjacent tracks.

Description

Die Erfindung betrifft eine Vorrichtung zur Umwandlung einer Drehbewegung in eine hin- und hergehende Bewegung, insbesondere einen Ventiltrieb für Brennkraftmaschinen von Kraftfahrzeugen, eine Nockensteuerung von Werkzeugmaschinen oder dergleichen, mit einem angetriebenen Nockenelement und mit einem vom Nockenelement verschieb- oder verschwenkbaren Nockenfolgeelement, insbesondere einem Stößel oder dergleichen, wobei das Nockenelement drehbar in einem flexiblen Umschließungselement angeordnet ist, das in einer zur Drehachse des Nockenelementes senkrechten Ebene beweglich und mit dem Nockenfolgeelement verbunden ist, und wobei in der Umfangsfläche des Nockenelementes und/oder der Innenfläche des flexiblen Umschließungselementes zumindest eine Mündungsöffnung für ein reibungsverminderndes Medium vorgesehen ist.The invention relates to a device for converting a rotary movement into a back and forth movement, in particular a valve train for Internal combustion engines of motor vehicles, a cam control from Machine tools or the like, with a driven cam element and with a slidable or pivotable from the cam element Cam follower, in particular a tappet or the like, which Cam element is rotatably arranged in a flexible enclosing element movable in a plane perpendicular to the axis of rotation of the cam element and with the cam follower is connected, and being in the peripheral surface of the Cam element and / or the inner surface of the flexible enclosing element at least one opening for a friction-reducing medium is provided is.

In der WO 01/12958 ist ein Ventiltrieb mit einem Nockenelement und einem flexiblen Umschließungselement beschrieben, bei dem das reibungsvermindernde Medium, wie Öl, Luft od. dgl. insbesondere durch eine hohle Trägerwelle und das Nockenelement zugeführt wird, wobei die Trägerwelle und das Nockenelement fluchtende Bohrungen aufweisen. Das reibungsvermindernde Medium gelangt so in den Zwischenraum zwischen dem beispielsweise als Ring oder Band ausgebildeten Umschließungselement und dem Nockenelement. Als Umschließungselement kann auch ein Seil verwendet werden, wobei in diesem Fall das Nockenelement eine Umfangsnut aufweist, in die die radiale Bohrung mündet. Eine Zuführung von außen durch das nicht rotierende Umschließungselement ist ebenfalls angegeben.WO 01/12958 describes a valve train with a cam element and a flexible one Enclosure element described, in which the friction-reducing medium, such as Oil, air or the like. In particular through a hollow carrier shaft and the cam element is supplied, wherein the carrier shaft and the cam element aligned holes exhibit. The friction-reducing medium gets into the gap between the one formed for example as a ring or band Enclosure element and the cam element. Can be used as an enclosing element also a rope can be used, in which case the cam element is a Has circumferential groove into which the radial bore opens. An outside feed by the non-rotating enclosing element is also indicated.

Die wichtigste Voraussetzung für die Verminderung der Reibung zwischen zwei aufeinander gleitenden Flächen ist eine einwandfreie Schmierung. Die beiden Flächen sollen durch einen Film aus dem reibungsvermindernden Medium vollkommen voneinander getrennt sein, um die Lagerreibung und den Werkstoffverschleiß zu minimieren. Es sollte im Fall von Öl, beispielsweise Schmieröl, eine tragende Flüssigkeits- und im Fall von Luft od. dgl. eine tragende Gasschicht ausgebildet sein. Den Reibungscharakteristiken in tribologischen Systemen liegen bestimmte Eigenschaften des Lagergrundkörpers, des Lagergegenkörpers und des Mediums zugrunde, wobei beide Lagerkörper jeweils als formstabil vorausgesetzt werden, d.h. die Gleitflächen verändern nicht ihre Form in Bewegungsrichtung. Nur dies erlaubt es, eine Grundbedingung zu erfüllen, nämlich die Ausbildung eines sich in Bewegungsrichtung verengenden Spaltes, der einen Schmierkeil erzeugt.The main requirement for reducing the friction between two surfaces sliding on each other is perfect lubrication. The two faces are supposed to be perfect through a film made of the friction-reducing medium be separated from each other in order to increase bearing friction and material wear minimize. In the case of oil, such as lubricating oil, it should be a load-bearing one Liquid and in the case of air or the like. A supporting gas layer can be formed. There are certain friction characteristics in tribological systems Properties of the bearing base body, the bearing counter body and the medium both bearing bodies are assumed to be dimensionally stable, i.e. the sliding surfaces do not change their shape in the direction of movement. Only this allows to fulfill a basic condition, namely the training of oneself in Direction of movement narrowing gap that creates a lubricating wedge.

Bei der eingangs erwähnten Vorrichtung ist nun zwar das Nockenelement formstabil, nicht hingegen das Umschließungselement, das in Umfangsrichtung so flexibel sein muß, daß es die oszillierende Bewegung für die Zwangsführung des Nockenfolgeelementes ausüben kann. Da das Umschließungselement vom hin- und hergehenden Nockenfolgeelement vor allem dann relativ hohen Zugkräften ausgesetzt ist, wenn die Abstoßbeschleunigung abgebremst wird, wird jener dem Verbindungsbereich gegenüberliegende Teil des Umschließungselementes fest auf den Umfang des Nockenelementes gepreßt. Umgekehrt wird der den Verbindungsbereich einschließende Teil des Umschließungselementes kurz vor der Rückkehr in die Ausgangsstellung entsprechend hohen Druckkräften ausgesetzt, da die Rückholbeschleunigung abgebremst wird, und auf den Umfang des Nockenelementes gepreßt. In beiden Fällen werden in diesen Bereichen liegende Austrittsöffnungen durch das Umschließungselement dicht verschlossen, und für die Zuführung des Schmiermediums wäre ein sehr hoher Druck erforderlich. Beispielsweise ist in üblichen Zylinderköpfen ein Druck von 2 bis 5 bar vorhanden, und zumindest der 10-fache Druck müßte aufgebracht werden können, um das Umschließungselement vom Umfang wegzudrücken und das Medium austreten zu lassen. (Die Werte dieses Beispiels beziehen sich auf Ölschmierungen). Es entstehen nur partielle Schmierstofffilme und es tritt eine Mischreibung auf, deren Reibungszahl nicht kleiner als 0,1 wird.In the device mentioned at the beginning, the cam element is now dimensionally stable, not the enclosing element, however, which is so flexible in the circumferential direction must be the oscillating movement for the positive guidance of the Can exercise cam follower. Since the enclosing element from back and forth The resulting cam follower is then exposed to relatively high tensile forces is when the push-off acceleration is slowed down, that becomes the Connection area opposite part of the enclosing element firmly pressed the circumference of the cam element. The opposite is the case Part of the enclosing element shortly before the connection area Return to the starting position exposed to correspondingly high pressure forces because the return acceleration is braked, and to the extent of Pressed cam element. In both cases, those lying in these areas Outlet openings tightly closed by the enclosing element, and for the A very high pressure would be required to supply the lubricant. For example, a pressure of 2 to 5 bar is present in conventional cylinder heads, and at least 10 times the pressure should be able to apply Push the enclosing element away from the circumference and the medium emerge to let. (The values in this example refer to oil lubrication). Arise only partial lubricant films and there is a mixed friction, their coefficient of friction not less than 0.1.

Die Erfindung hat es sich nun zur Aufgabe gestellt, bei einer Vorrichtung der eingangs genannten Art die Reibungsverhältnisse wesentlich zu verbessern, und zwischen zumindest dem größten Teil der Gleitflächen eine tragende Schicht des reibungsvermindernden Mediums, insbesondere eines Schmieröls auszubilden, so daß Reibungszahlen einer Flüssigkeitsreibung erreichbar werden.The invention has now set itself the task in a device of the beginning mentioned type to significantly improve the frictional relationships, and between at least the majority of the sliding surfaces a load-bearing layer of the to form a friction-reducing medium, in particular a lubricating oil, so that Friction coefficients of a fluid friction can be reached.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß das Nockenelement und/oder das Umschließungselement Flächen aufweist, die zur Umfangsfläche des Nockenelementes in Umfangsrichtung geneigt und in Umfangsrichtung nacheinander angeordnet sind. According to the invention, this object is achieved in that the cam element and / or the enclosing element has surfaces that face the peripheral surface of the Cam element inclined in the circumferential direction and in succession in the circumferential direction are arranged.

Auf diese Weise können nun trotz der bereichsweisen hohen Anpressung des Umschließungselementes an die Umfangsfläche des Nockenelementes auch in diesen Bereichen Schmierkeile bestehen bleiben, die die gewünschten niederen Reibungszahlen bewirken. Je nach Anzahl und Anordnung der Flächen kann dabei auch ein geschlossener Schmierfilm erreicht werden, wenn die geneigten Flächen sägezahnartig abgestuft sind. Da das flexible Umschließungselement, insbesondere eine in einer Rundarbeitstechnik hergestellte Schlaufe aus hochzugfesten Fasern, beispielsweise aus Kevlar-, Glas-, Kohle-, Hochmodulpolyethylen-, Polyester-, Bor-, Aramidfasern oder ähnlichen, im wesentlichen längenkonstanten Fasern bzw. Kombinationen dieser Fasern auch quer zur Umfangsrichtung flexibel ist, ist es von Vorteil, die geneigten Flächen zumindest zweispurig anzuordnen und die Spuren durch in Umfangsrichtung geschlossene oder unterbrochene Stege zu trennen. Die Spuren können in Umfangsrichtung versetzt sein, so daß die geneigten Flächen einander überlappen.In this way, despite the high pressure in certain areas Enclosure element on the circumferential surface of the cam element also in this Areas of grease wedges remain that lower the desired ones Cause friction coefficients. Depending on the number and arrangement of the surfaces, you can also a closed lubricating film can be achieved if the inclined surfaces are sawtooth graded. Because the flexible enclosing element, in particular a loop made from high tensile strength fibers, for example made of Kevlar, glass, carbon, high modulus polyethylene, polyester, boron, Aramid fibers or similar, essentially length-constant fibers or Combinations of these fibers is also flexible across the circumferential direction, it is from Advantage to arrange the inclined surfaces at least in two lanes and through the tracks to separate closed or interrupted webs in the circumferential direction. The traces can be offset in the circumferential direction so that the inclined surfaces each other overlap.

Die Reibungszahl kann weiter verringert werden, wenn die Umfangsfläche, die Innenfläche und/oder die geneigten Flächen eine reibungsvermindernde Mikrostruktur aufweisen.The coefficient of friction can be further reduced if the circumferential surface that Inner surface and / or the inclined surfaces have a friction-reducing microstructure exhibit.

Die Mikrostruktur besteht insbesondere aus Längsrillen, deren Vorbild in der Haifischhaut zu finden ist, und durch die der Reibungswiderstand der Grenzschichten um etwa 10% herabgesetzt wird. Derartige auch als fluiddynamische Oberflächen bezeichnete Flächen werden zur Verringerung des Strömungswiderstandes von wasser- oder luftumströmten Körpern ausgebildet (Flugzeugtragflächen, Schiffsrümpfe usw.)The microstructure consists in particular of longitudinal grooves, which are modeled on the Shark skin can be found, and through which the frictional resistance of the boundary layers is reduced by about 10%. Such as fluid dynamic surfaces designated areas are used to reduce the flow resistance of bodies around which water or air flows (aircraft wings, ship hulls etc.)

Mündungsöffnungen für das zuzuführende reibungsvermindernde Medium sind bevorzugt in den geneigten Flächen vorgesehen. Wenn die Zufuhr des reibungsvermindernden Mediums über die sich drehenden Nockenelemente erfolgt, so ist bevorzugt vorgesehen, daß das Nockenelement mindestens eine Bohrung aufweist, die zur Mündungsöffnung führt und mit einer hohlen Trägerwelle des Nockenelementes strömungsverbunden ist.Mouth openings for the friction-reducing medium to be supplied preferably provided in the inclined surfaces. If the supply of the friction-reducing medium takes place via the rotating cam elements, so it is preferably provided that the cam element has at least one bore, which leads to the mouth opening and with a hollow support shaft of the cam element is connected to the flow.

Nachstehend werden nun als Ventiltriebe ausgebildete Ausführungsbeispiele der Erfindung an Hand der Figuren der beiliegenden Zeichnungen näher beschrieben, ohne darauf beschränkt zu sein. In the following, embodiments of the valve drives are designed Invention described with reference to the figures of the accompanying drawings, without being limited to it.

Es zeigen:Show it:

  • Fig. 1 eine Stirnansicht eines von einem Umschließungselement umgebenen Nockenelementes,Fig. 1 is an end view of a surrounded by an enclosing element Cam element,
  • Fig. 2 einen Radialschnitt durch das Nockenelement der Fig. 1,2 shows a radial section through the cam element of FIG. 1,
  • Fig. 3 vergrößert den Bereich III der Fig. 1,3 enlarges area III of FIG. 1,
  • Fig. 4 die Bestandteile des von einem Umschließungselement umgebenen Nockenelementes der Fig. 1 in Schrägansicht,Fig. 4 shows the components of the cam element surrounded by an enclosing element 1 in an oblique view,
  • Fig. 5 eine teilaufgeschobene Position der Bestandteile der Fig. 4,5 is a partially deferred position of the components of FIG. 4,
  • Fig. 6 eine abgewickelte Ansicht einer Folge geneigter Flächen,6 is a developed view of a sequence of inclined surfaces,
  • Fig. 7 eine abgewickelte Ansicht einer zweiten Ausführungsform des Umschließungselementes,7 is a developed view of a second embodiment of the enclosing element,
  • Fig. 8 eine abgewickelte Ansicht einer dritten Ausführungsform des Umschließungselementes, und8 is a developed view of a third embodiment of the enclosing element, and
  • Fig. 9 einen Teillängsschnitt durch Fig. 7 oder Fig. 8.9 shows a partial longitudinal section through FIG. 7 or FIG. 8.

    • Fig. 4 zeigt die Bestandteile einer möglichen Ausführungsform eines Ventiltriebs für ein Ventil bzw. ein Ventilpaar, wobei für einen Verbrennungsmotor eines Kraftfahrzeuges die benötigte Anzahl von Nockenelementen 2 auf einer hohlen Trägerwelle 1 (Fig. 2) vorgesehen sind.Fig. 4 shows the components of a possible embodiment of a valve train for a Valve or a pair of valves, being for an internal combustion engine of a motor vehicle the required number of cam elements 2 on a hollow carrier shaft 1 (Fig. 2) are provided.

    Das bzw. jedes Nockenelement 2 ist von einem im wesentlichen an der Umfangsfläche 94 des Nockenelementes 2 anliegenden Umschließungselement 4 umgeben, das aus einem flexiblen, nachgiebigen, in Umfangsrichtung möglichst zugfesten Material, insbesondere aus einer in einer textilen Rundarbeitstechnik geschlossen hergestellten Schlaufe aus Fasern mit hoher Längenkonstanz besteht. Das Nockenelement 2 kann sich daher unter fortlaufender pulsierender Verformung des Umschließungselementes 4 im Umschließungselement 4 um seine Drehachse 8 verdrehen. Das Umschließungselement 4 wird durch die Verbindung zu einem nur angedeuteten Nockenfolgeelement 10 (Fig. 1) an der Drehung gehindert, und ist mit dem Nockenfolgeelement schwenkbar verbunden. Dies erfolgt mittels des parallel zur Drehachse 8 eingesetzten Lagerstiftes 14, der in einem Druckverteilungspolster 75 angeordnet ist, der zwischen einer inneren Schicht 22 und einer äußeren Schicht 66 des Umschließungselementes 4 eingesetzt ist. Die innere Schicht 22 weist eine Innenfläche 95 auf, die die umlaufende Umfangsfläche 94 des Nockenelementes berührt. Zwischen diesen beiden Flächen 94, 95 tritt somit eine Gleitreibung auf, die es zu minimieren gilt. Da entsprechend niedere Reibungszahlen nicht durch Trockenreibung sondern nur durch die Zufuhr eines reibungsvermindernden Mediums erzielbar sind, sollte dieses einen möglichst geschlossenen Film bilden. Ein geschlossener Film kann aber nur durch einen keilförmigen Spalt erreicht werden, dem jedoch die Flexibilität des Umschließungselementes 2 entgegensteht.The or each cam member 2 is substantially on the peripheral surface 94 of the cam element 2 surrounding encircling element 4, the out a flexible, flexible material that is as tensile as possible in the circumferential direction, in particular from a closed fabricated in a textile reworking technique Loop consists of fibers with a high length constancy. The cam element 2 can therefore with continuous pulsating deformation of the enclosing element 4 rotate in the enclosing element 4 about its axis of rotation 8. The Enclosure element 4 is only indicated by the connection to one Cam follower 10 (Fig. 1) prevented from rotating, and is with the Cam follower pivotally connected. This is done using the parallel to Axis of rotation 8 inserted bearing pin 14 which in a pressure distribution pad 75th arranged between an inner layer 22 and an outer layer 66 of the enclosing element 4 is used. The inner layer 22 has one Inner surface 95 on the circumferential peripheral surface 94 of the cam element touched. A sliding friction occurs between these two surfaces 94, 95 to minimize. Because correspondingly low coefficients of friction do not pass through Dry friction but only through the supply of a friction-reducing medium can be achieved, this should form a closed film as possible. On closed film can only be achieved through a wedge-shaped gap however, the flexibility of the enclosing element 2 stands in the way.

    Es werden daher in Umfangsrichtung aufeinanderfolgende, zur Umfangsfläche 94 geneigte Flächen 96, 97 vorgesehen, an denen auch bei hohen Zug- und Druckkräften das flexible Umschließungselement 4 nicht vollflächig anliegen kann. In der Ausführung nach Fig. 1 bis 5 sind die geneigten Flächen 96 an der Umfangsfläche 94 des Nockenelementes 2 vorgesehen. In der Ausführung nach Fig. 6 bis 9 sind die geneigten Flächen 97 an der Innenfläche 95 des Umschließungselementes 4 bzw. seiner inneren Schicht 22 vorgesehen. Selbstverständlich ist es auch möglich, sowohl in der Umfangsfläche 94 als auch in der Innenfläche 95 geneigte Flächen 96, 97 auszubilden.Therefore, successive ones in the circumferential direction become circumferential surface 94 inclined surfaces 96, 97 are provided, even at high tensile and compressive forces the flexible enclosing element 4 cannot lie over the entire surface. In execution 1 to 5, the inclined surfaces 96 on the peripheral surface 94 of the Cam element 2 is provided. 6 to 9 are the inclined surfaces 97 on the inner surface 95 of the enclosing element 4 or its inner layer 22 is provided. Of course it is also possible to do both in the peripheral surface 94 and in the inner surface 95 inclined surfaces 96, 97 train.

    Alternativ zeigen Fig. 6 bis 8 aber auch geneigte Flächen aufweisende Streifen, die am Umfang des Nockenelementes 2 angebracht, insbesondere in eine Umfangsnut eingesetzt sein können.Alternatively, FIGS. 6 to 8 also show strips having inclined surfaces, which on Attached circumference of the cam element 2, in particular in a circumferential groove can be used.

    Die Zuführung des reibungsvermindernden Mediums kann entweder über das Nockenelement 2 oder über das Umschließungselement 4 erfolgen, wobei es unerheblich ist, ob Mündungsöffnungen 98, 99 in dem die geneigten Flächen 96, 97 aufweisenden Element 2, 4 vorgesehen sind oder nicht. Sind Mündungsöffnungen 98, 99 in dem die geneigten Flächen 96, 97 aufweisenden Element 2, 4 vorgesehen, so liegen sie an der tiefsten Stelle der geneigten Fläche, wie aus Fig. 3 und Fig. 9 ersichtlich ist.The supply of the friction-reducing medium can either be via the Cam element 2 or take place over the enclosing element 4, wherein it it is irrelevant whether orifices 98, 99 in which the inclined surfaces 96, 97 having element 2, 4 are provided or not. If mouth openings are 98, 99 in the element 2, 4 having the inclined surfaces 96, 97, see above they lie at the lowest point of the inclined surface, as in FIGS. 3 and 9 can be seen.

    Für die Zufuhr des reibungsvermindernden Mediums durch das Nockenelement 2 ist dieses auf einer hohlen Trägerwelle 1 angeordnet, die im Bereich des Nockenelementes 2 zwei radiale Bohrungen 30 aufweist, die in eine Umfangsnut münden. Das Nockenelement 2 ist mit mehreren Bohrungen 3 versehen, die radial zur Drehachse 8 und/oder senkrecht zur Umfangsfläche 94 verlaufen, und das reibungsvermindernde Medium strömt aus der hohlen Trägerwelle 1 über die Umfangsnut und durch die Bohrungen 3 zu den Mündungsöffnungen 98, wobei sich über den geneigten Flächen 96 Schmierkeile ausbilden. Anstelle der Umfangsnut an der Trägerwelle 1 kann auch das Nockenelement 2 eine innere Ringnut aufweisen.For the supply of the friction-reducing medium through the cam element 2 is this arranged on a hollow carrier shaft 1, which in the area of Cam element 2 has two radial bores 30, which in a circumferential groove lead. The cam element 2 is provided with a plurality of bores 3 which are radial to Axis of rotation 8 and / or extend perpendicular to the peripheral surface 94, and that friction-reducing medium flows out of the hollow carrier shaft 1 over the Circumferential groove and through the holes 3 to the mouth openings 98, where Form 96 grease wedges over the inclined surfaces. Instead of the circumferential groove the carrier shaft 1, the cam element 2 can also have an inner annular groove.

    Für die Zufuhr des reibungsvermindernden Mediums durch das Umschließungselement 4 ist eine flexible äußere Zuleitung erforderlich, die an einer Stelle in das Umschließungselement 4 eintritt und in der Mündungsöffnung 99 (Fig. 9) endet, die an der tiefsten Stelle einer geneigten Fläche 97 oder, wenn das Umschließungselement 4 keine geneigten Flächen 97 aufweist, an beliebiger Stelle an der Innenfläche 95 vorgesehen ist. Bevorzugt sind auch hier mehr als eine Mündungsöffnung 99 ausgebildet, beispielsweise zwei einander diametral gegenüberliegende.For the supply of the friction reducing medium through the Enclosure element 4, a flexible outer supply line is required, which on a Place enters the enclosing element 4 and in the mouth opening 99 (FIG. 9) ends at the deepest point of an inclined surface 97 or if that Enclosure element 4 has no inclined surfaces 97 at any point the inner surface 95 is provided. Here too, more than one are preferred Mouth opening 99 is formed, for example two diametrically opposite one another opposite.

    Die geneigten Flächen 96, 97 können, wie Fig. 2 bis 8 zeigt, mit Abstand nacheinander ausgebildet sein, so daß schmale Querstege verbleiben. Die Querstege können auf eine stützende Berührungslinie verkleinert sein, wenn die geneigten Flächen 96, 97 sägezahnartig angeordnet sind. Ein Verbindungskanal zwischen allen Mündungsöffnungen 98, 99, insbesondere eine die Querstege unterbrechende Umfangsnut des Nockenelementes 2 ist ebenfalls möglich, so daß insbesondere bei der Zuführung durch das Umschließungselement 2 nur eine oder zwei Mündungsöffnungen 99 ausreichen. Beidseitig geneigte Flächen 96, 97 sind ebenfalls denkbar, wenn bei der Montage die Drehrichtung außer Acht bleiben soll. Eine gegengerichtete Anordnung, die von der Drehrichtung unabhängig ist, ist auch möglich, wenn die Umfangsfläche 94 und die Innenfläche 95 mit geneigten Flächen 96, 97 versehen sind.2 to 8, the inclined surfaces 96, 97 can be spaced one after the other be designed so that narrow crossbars remain. The crossbars can be opened a supportive line of contact may be reduced when the inclined surfaces 96, 97 are arranged sawtooth. A connecting channel between everyone Mouth openings 98, 99, in particular one that interrupts the transverse webs Circumferential groove of the cam element 2 is also possible, so that in particular the supply through the enclosing element 2 only one or two Mouth openings 99 are sufficient. Surfaces 96, 97 inclined on both sides are also conceivable if the direction of rotation should be disregarded during assembly. A opposing arrangement, which is independent of the direction of rotation, is also possible if the peripheral surface 94 and the inner surface 95 with inclined surfaces 96, 97 are provided.

    In den Zeichnungen sind die Neigungswinkel der Flächen 96, 97 übertrieben dargestellt, um sie zeigen zu können. Die Neigungswinkel sind in einer Größe von ein bis drei Winkelminuten vorgesehen, die nicht wesentlich unter- und überschritten werden darf.In the drawings, the angles of inclination of the surfaces 96, 97 are exaggerated shown to show them. The angles of inclination are in a size of one up to three angular minutes are provided, which are not significantly below or above may be.

    Fig. 4 und 7 zeigen eine Reihe von rechteckigen geneigten Flächen 96, 97, die von Rand- und Querstegen begrenzt sind, die in der Umfangsfläche 94 bzw. der Innenfläche 95 liegen. Fig. 8 zeigt eine Ausführung mit einem zusätzlichen, trennenden Mittelsteg, so daß die geneigten Flächen 96, 97 in zwei Spuren aufgeteilt und halb versetzt sind. Fig. 6 zeigt eine Ausführung, die nur Querstege aufweist und, wie bereits erwähnt, insbesondere auch einen Umfangseinsatz des Nockenelementes 2 bilden kann, so daß ebenfalls die in Fig. 4 gezeigte Ausführung entsteht.FIGS. 4 and 7 show a series of rectangular inclined surfaces 96, 97, which of Edge and transverse webs are limited, which in the peripheral surface 94 and the Inner surface 95 lie. Fig. 8 shows an embodiment with an additional, separating Center land, so that the inclined surfaces 96, 97 divided into two lanes and half are offset. Fig. 6 shows an embodiment which has only cross webs and, as already mentioned, in particular also form a peripheral insert of the cam element 2 can, so that the embodiment shown in Fig. 4 also arises.

    Alle tribologischen Flächen 94, 95, 96 und 97 können zusätzlich noch eine reibungsvermindernde Mikrostruktur aufweisen, beispielsweise Längsrillen, sogenannte Riblets, wie sie von der Oberfläche der Haifischhaut bekannt sind.All tribological surfaces 94, 95, 96 and 97 can also have one have friction-reducing microstructure, for example longitudinal grooves, So-called riblets, as they are known from the surface of the shark skin.

    Die in den Fig. 1 bis 9 beschriebenen Ausführungsbeispiele sind, wie bereits erwähnt, nicht nur für die Ventilsteuerung von Verbrennungsmotoren einsetzbar, sondern überall dort, wo eine desmodromische Umwandlung einer Drehbewegung in eine hin- und hergehende Bewegung erfolgt, beispielsweise für Nockensteuerungen von Werkzeugmaschinen, für besondere Getriebe, usw.As already mentioned, the exemplary embodiments described in FIGS. 1 to 9 are not only for valve control of internal combustion engines, but everywhere where a desmodromic conversion of a rotary motion into a back and forth Moving movement takes place, for example for cam controls from Machine tools, for special gears, etc.

    Claims (9)

    Vorrichtung zur Umwandlung einer Drehbewegung in eine hin- und hergehende Bewegung, insbesondere Ventiltrieb für Brennkraftmaschinen von Kraftfahrzeugen, Nockensteuerung oder dergleichen, mit einem angetriebenen Nockenelement (2) und mit einem vom Nockenelement (2) verschieb- oder verschwenkbaren Nockenfolgeelement (10), insbesondere einem Stößel oder dergleichen, wobei das Nockenelement (2) drehbar in einem flexiblen Umschließungselement (4) angeordnet ist, das in einer zur Drehachse (8) des Nockenelementes (4) senkrechten Ebene beweglich und mit dem Nockenfolgeelement (10) verbunden ist, wobei in der Umfangsfläche (94) des Nockenelementes (2) und/oder der Innenfläche (95) des flexiblen Umschließungselementes (4) zumindest eine Mündungsöffnung (98, 99) für ein reibungsverminderndes Medium vorgesehen ist, dadurch gekennzeichnet, daß das Nockenelement (2) und/oder das Umschließungselement (4) Flächen (96, 97) aufweist, die zur Umfangsfläche (94) des Nockenelementes (2) in Umfangsrichtung geneigt und in Umfangsrichtung nacheinander angeordnet sind.Device for converting a rotary movement into a reciprocating movement, in particular valve train for internal combustion engines of motor vehicles, cam control or the like, with a driven cam element (2) and with a cam follower element (10) which can be displaced or pivoted by the cam element (2), in particular one Tappet or the like, the cam element (2) being rotatably arranged in a flexible enclosing element (4) which is movable in a plane perpendicular to the axis of rotation (8) of the cam element (4) and is connected to the cam follower element (10), in which Circumferential surface (94) of the cam element (2) and / or the inner surface (95) of the flexible enclosing element (4) at least one mouth opening (98, 99) is provided for a friction-reducing medium, characterized in that the cam element (2) and / or the enclosing element (4) has surfaces (96, 97) which face the peripheral surface (94) of the cam element (2) Are inclined circumferentially and arranged one after the other in the circumferential direction. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die geneigten Flächen (96, 97) sägezahnartig abgestuft sind.Apparatus according to claim 1, characterized in that the inclined surfaces (96, 97) are stepped sawtooth. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die geneigten Flächen (96, 97) zumindest zweispurig nebeneinander angeordnet sind.Device according to Claim 1 or 2, characterized in that the inclined surfaces (96, 97) are arranged next to one another at least in two lanes. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß die geneigten Flächen (96, 97) der Spuren einander in Umfangsrichtung überlappen.Device according to claim 3, characterized in that the inclined surfaces (96, 97) of the tracks overlap one another in the circumferential direction. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Winkel zwischen der Umfangsfläche (94) und der geneigten Fläche (96, 97) jeweils zwischen ein und drei Winkelminuten beträgt.Device according to one of claims 1 to 4, characterized in that the angle between the peripheral surface (94) and the inclined surface (96, 97) is in each case between one and three angular minutes. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Umfangsfläche (94), die Innenfläche (95) und/oder die geneigten Flächen (96, 97) eine reibungsvermindernde Mikrostruktur, insbesondere in Form von Längsrillen aufweisen. Device according to one of claims 1 to 5, characterized in that the peripheral surface (94), the inner surface (95) and / or the inclined surfaces (96, 97) have a friction-reducing microstructure, in particular in the form of longitudinal grooves. Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß jede Mündungsöffnung (98, 99) für das reibungsvermindernde Medium in einer der zur Umfangsfläche (94) geneigten Flächen (96, 97) liegt.Device according to one of claims 1 to 6, characterized in that each mouth opening (98, 99) for the friction-reducing medium lies in one of the surfaces (96, 97) inclined to the peripheral surface (94). Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß die tiefsten Stellen der geneigten Flächen (96, 97) durch einen Kanal strömungsverbunden sind.Apparatus according to claim 7, characterized in that the deepest points of the inclined surfaces (96, 97) are fluidly connected by a channel. Vorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß das Nockenelement (2) mindestens eine Bohrung (3) aufweist, die zur Mündungsöffnung (94) führt und mit einer Bohrung (30) strömungsverbunden ist, die in einer hohlen Trägerwelle (1) des Nockenelementes (2) ausgebildet ist.Device according to one of claims 1 to 8, characterized in that the cam element (2) has at least one bore (3) which leads to the mouth opening (94) and is flow-connected to a bore (30) which is in a hollow carrier shaft (1 ) of the cam element (2) is formed.
    EP02009735A 2001-05-04 2002-04-30 Device for converting a rotational movement to reciprocation movement Expired - Lifetime EP1255025B1 (en)

    Priority Applications (1)

    Application Number Priority Date Filing Date Title
    AT02009735T ATE283967T1 (en) 2001-05-04 2002-04-30 DEVICE FOR CONVERTING A ROTARY MOVEMENT INTO A RACING MOVEMENT

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    AT7192001 2001-05-04
    AT7192001 2001-09-18

    Publications (3)

    Publication Number Publication Date
    EP1255025A2 true EP1255025A2 (en) 2002-11-06
    EP1255025A3 EP1255025A3 (en) 2003-05-02
    EP1255025B1 EP1255025B1 (en) 2004-12-01

    Family

    ID=3679836

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP02009735A Expired - Lifetime EP1255025B1 (en) 2001-05-04 2002-04-30 Device for converting a rotational movement to reciprocation movement

    Country Status (3)

    Country Link
    EP (1) EP1255025B1 (en)
    AT (1) ATE283967T1 (en)
    DE (1) DE50201648D1 (en)

    Cited By (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US7246578B2 (en) 2004-02-17 2007-07-24 Hitachi, Ltd. Valve operating mechanism of internal combustion engine
    EP1600610A3 (en) * 2004-05-29 2008-08-20 Dr. Ing. h.c. F. Porsche Aktiengesellschaft Valve drive for an internal combustion engine

    Citations (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US1238175A (en) * 1917-04-09 1917-08-28 Hulbert S Clark Elastic puppet-valve.
    DE3700715A1 (en) * 1986-01-22 1987-07-23 Volkswagen Ag Positive control for a valve
    DE29916363U1 (en) * 1998-06-16 1999-12-30 Battlogg, Stefan, St. Anton Valve train, in particular for internal combustion engines
    WO2001012958A1 (en) * 1999-08-12 2001-02-22 Stefan Battlogg A valve drive in particular for combustion engines of motor vehicles

    Patent Citations (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US1238175A (en) * 1917-04-09 1917-08-28 Hulbert S Clark Elastic puppet-valve.
    DE3700715A1 (en) * 1986-01-22 1987-07-23 Volkswagen Ag Positive control for a valve
    DE29916363U1 (en) * 1998-06-16 1999-12-30 Battlogg, Stefan, St. Anton Valve train, in particular for internal combustion engines
    WO2001012958A1 (en) * 1999-08-12 2001-02-22 Stefan Battlogg A valve drive in particular for combustion engines of motor vehicles

    Cited By (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US7246578B2 (en) 2004-02-17 2007-07-24 Hitachi, Ltd. Valve operating mechanism of internal combustion engine
    EP1600610A3 (en) * 2004-05-29 2008-08-20 Dr. Ing. h.c. F. Porsche Aktiengesellschaft Valve drive for an internal combustion engine

    Also Published As

    Publication number Publication date
    ATE283967T1 (en) 2004-12-15
    DE50201648D1 (en) 2005-01-05
    EP1255025A3 (en) 2003-05-02
    EP1255025B1 (en) 2004-12-01

    Similar Documents

    Publication Publication Date Title
    EP1844216B1 (en) Adjustable camshaft, in particular for internal combustion engines of motor vehicles, comprising a hydraulic adjusting system
    DE4019766C2 (en)
    DE3904242C2 (en)
    DE19651112C2 (en) Sealing device for an engine piston rod
    DE3534536C2 (en)
    DE10204672A1 (en) Valve-actuating switch element has two securing rings, thickness of one of which can be varied
    DE72228T1 (en) PISTON.
    DE3916552A1 (en) DOUBLE-ROW PIVOT ROLLER BEARING
    DE19709170A1 (en) Sealing for reciprocating machine parts, especially valve stem seals
    EP2634385B1 (en) Adjustable Camshaft
    DE4434994C2 (en) Pistons for internal combustion engines
    DE3433510A1 (en) Sliding block for a slider crank interacting with a crankshaft, in particular for an internal combustion engine with at least one cylinder
    EP1255025A2 (en) Device for converting a rotational movement to reciprocation movement
    DE3814769A1 (en) PISTON RING ARRANGEMENT
    DE102007045465A1 (en) Piston with oil supply channel for hub bores
    DE4322246B4 (en) Camshaft arrangement with at least one cam that is pivotably supported by a shaft
    DE102006028316B4 (en) Synchronization device for a manual transmission
    WO2013000589A1 (en) Mounting a camshaft by means of rolling bearings
    WO2003076770A1 (en) Method for the production of valve gear components of an internal combustion engine and controllable valve gear component
    DE2402116B2 (en) ROTARY PISTON MACHINE WITH CIRCULAR ENGINE
    DE2122361C3 (en) oil control ring for reciprocating piston machines
    DE102019205338A1 (en) Tension wave gear
    WO2018162601A1 (en) Camshaft with a lubricated sliding piece
    DE10028336C1 (en) Engine with axial piston has through guide channel between at least one tooth crown surface and tooth space bottom opposite it
    DE457645C (en) 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: A2

    Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

    AX Request for extension of the european patent

    Free format text: AL;LT;LV;MK;RO;SI

    PUAL Search report despatched

    Free format text: ORIGINAL CODE: 0009013

    AK Designated contracting states

    Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

    AX Request for extension of the european patent

    Extension state: AL LT LV MK RO SI

    RIC1 Information provided on ipc code assigned before grant

    Ipc: 7F 16H 53/06 B

    Ipc: 7F 01L 1/053 B

    Ipc: 7F 01L 1/30 B

    Ipc: 7F 01L 1/08 A

    AKX Designation fees paid
    REG Reference to a national code

    Ref country code: DE

    Ref legal event code: 8566

    17P Request for examination filed

    Effective date: 20040115

    RBV Designated contracting states (corrected)

    Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

    GRAP Despatch of communication of intention to grant a patent

    Free format text: ORIGINAL CODE: EPIDOSNIGR1

    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): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

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

    Ref country code: TR

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20041201

    Ref country code: NL

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20041201

    Ref country code: IT

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;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: 20041201

    Ref country code: IE

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20041201

    Ref country code: GB

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20041201

    Ref country code: FR

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

    Effective date: 20041201

    Ref country code: FI

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20041201

    REG Reference to a national code

    Ref country code: GB

    Ref legal event code: FG4D

    Free format text: NOT ENGLISH

    REG Reference to a national code

    Ref country code: CH

    Ref legal event code: EP

    REG Reference to a national code

    Ref country code: IE

    Ref legal event code: FG4D

    Free format text: GERMAN

    REF Corresponds to:

    Ref document number: 50201648

    Country of ref document: DE

    Date of ref document: 20050105

    Kind code of ref document: P

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

    Ref country code: SE

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20050301

    Ref country code: GR

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20050301

    Ref country code: DK

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20050301

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

    Ref country code: ES

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20050312

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

    Ref country code: MC

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

    Effective date: 20050430

    Ref country code: LU

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

    Effective date: 20050430

    Ref country code: CY

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20050430

    Ref country code: BE

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

    Effective date: 20050430

    Ref country code: AT

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

    Effective date: 20050430

    NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
    GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

    Effective date: 20041201

    REG Reference to a national code

    Ref country code: IE

    Ref legal event code: FD4D

    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

    BERE Be: lapsed

    Owner name: BATTLOGG, STEFAN

    Effective date: 20050430

    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: 20051101

    26N No opposition filed

    Effective date: 20050902

    EN Fr: translation not filed
    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: LI

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

    Effective date: 20060430

    Ref country code: CH

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

    Effective date: 20060430

    REG Reference to a national code

    Ref country code: CH

    Ref legal event code: PL

    BERE Be: lapsed

    Owner name: *BATTLOGG STEFAN

    Effective date: 20050430

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

    Ref country code: PT

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

    Effective date: 20050501