WO2003076770A1 - Method for the production of valve gear components of an internal combustion engine and controllable valve gear component - Google Patents
Method for the production of valve gear components of an internal combustion engine and controllable valve gear component Download PDFInfo
- Publication number
- WO2003076770A1 WO2003076770A1 PCT/EP2003/000305 EP0300305W WO03076770A1 WO 2003076770 A1 WO2003076770 A1 WO 2003076770A1 EP 0300305 W EP0300305 W EP 0300305W WO 03076770 A1 WO03076770 A1 WO 03076770A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- locking
- valve drive
- internal combustion
- play
- combustion engine
- 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.)
- Ceased
Links
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
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/14—Tappets; Push rods
- F01L1/146—Push-rods
-
- 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
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/14—Tappets; Push rods
-
- 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
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0005—Deactivating 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
- F01L2305/00—Valve arrangements comprising rollers
-
- 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
- F01L2305/00—Valve arrangements comprising rollers
- F01L2305/02—Mounting of rollers
Definitions
- the invention relates to a method for producing switchable valve drive members of an internal combustion engine, wherein each valve drive member
- 15 has at least two parts which are relatively axially or pivotable relative to one another and at least one locking means such as a piston, which locking means can be displaced from one towards the other for the purpose of locking in such a way that it overlaps a separating surface between the parts and in a receptacle such as one Bore the other part section
- valve drive element produced here as a switchable roller tappet for a tappet rod drive
- FIG. 25 Shown are two diametrically opposite pistons as locking means, which can be displaced into a receptacle of an outer part of the valve drive member for the locking case.
- This locking play that is to say a relative path covered by an inner element having the locking means relative to the outer part during locking and cam lift, is necessary as a minimum play so that the locking can be implemented, but map on the other hand as an additional free travel on the valve lift.
- this play fluctuates from cam follower to cam follower. The variance of this game is specified within a defined setting range for locking games.
- the locking play on the individual cam follower increases due to wear. This is caused in particular by smoothing the material surfaces, material hardening, removal of the so-called edge supports, flattening, etc. Generally speaking, plastic and therefore permanent deformations take place in the locking area, which bring about the aforementioned increase in the locking play. It is clear that during the operation of the internal combustion engine, the increasing locking play may only lie within a defined spread range for locking games. The quality of the engine operation benefits greatly from a very small spreading range of the locking play for all similar valve train elements.
- the object of the invention is therefore to provide a method for producing switchable valve drive elements, in which the setting range for locking achievement games can be significantly increased compared to previous setting ranges or to create a method of the type described above in which the disadvantages mentioned are eliminated.
- the clearly wider setting range for the locking games brings with it, for example, a refinement of the grouping effort during assembly. It can also be ascertained that the measuring accuracy can be reduced during manufacture and assembly, or that there is less scrap or reworking due to failure to maintain the locking clearance tolerance.
- the force is expediently and in accordance with a specification of the invention so applied that it only loads the components located in the locking area. Otherwise, after application of the pre-wear, components of the valve drive element could be undesirably deformed due to this "time-lapse method".
- a roller which may be roller-supported, is intended as a direct cam counter-runner on the switchable valve drive element. But also in the area of one Contact surface of a push rod (in the case of training as a switchable roller tappet) could lead to undesired deformations if insufficient caution is taken.
- Further expedient embodiments of the invention relate to how the force for achieving the pre-wear is applied. For example, it is proposed to apply the force in a pulsating manner, although one-time action is also taken into account. The latter measure may be advantageous for mass production.
- the method according to the invention can be used equally with switchable valve drive elements such as the roller tappets mentioned, but also with cup tappets, support elements, valve drive bridges or lever groups (rocker arms, drag levers, or, for example, rocker arms).
- switchable valve drive elements such as the roller tappets mentioned, but also with cup tappets, support elements, valve drive bridges or lever groups (rocker arms, drag levers, or, for example, rocker arms).
- Another claim relates alternatively to a switchable valve drive member, in which, generally speaking, pre-wear is produced in the locking area between its receptacle and locking means.
- FIG. 1 shows in a longitudinal section a valve drive member and designed as a roller tappet Figure 2 for a more detailed explanation of the measures according to the invention a diagram showing the setting ranges of the locking game.
- valve drive element 1 shows a valve drive element 1, which is produced here as a roller tappet. It consists of an outer part 3, in which an inner part 2 is installed so that it can move relatively axially.
- Two diametrically opposite locking means 4 are arranged in a receptacle 6 of the part 2 designed as a through bore. In the unlocked state of the valve drive element 1, these run completely in their receptacle 6 and are designed here as pistons.
- the locking means 4 In a cam stroke position, the locking means 4 each have a complementary receptacle 7 in the outer part 3 for the locking case. In the case of the locking, which is shown in the drawing, which is accomplished here via the force of a compression spring 10, the locking means 4 thus overlap a separating surface 5 between the parts 2, 3 and run in sections in their receptacles 7.
- valve drive member 1 has at one end of a roller 8 as a direct cam counter-rotor.
- a force F is shown on a section of the inner part 2 opposite the roller 8.
- This force F here stands for a defined force, which is explained in more detail below and which is applied before the valve drive element 1 is installed in the corresponding internal combustion engine in the tensioning direction of the valve drive element 1 in order to increase the locking play VS in a defined manner.
- the locking game VS is also entered in Figure 1. It stands for a relative path, which the inner part 2 relative to the outer part 3 in the locking state shown . nd the Latches locking means 4 during cam stroke until locking means 4 is clamped in its seat 7 (see also introduction to description).
- Force F is applied in a pulsating manner in order to advantageously anticipate a large area of the further setting process taking place during operation of the motor in the locking area (increasing the locking play VS).
- FIG. 2 stands for a spreading range of the locking play during operation of the engine, within which the locking play VS of valve drive elements of the same type for internal combustion engines of the same type may move over a defined period t, advantageously the service life of the internal combustion engine.
- the spreading range SB that is, an area between the minimum locking clearance VSmin and the maximum locking clearance VSma, kept relatively narrow.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Description
VERFAHREN ZUR HERSTELLUNG VON SCHALTBAREN VENTILTRIEBSGLIEDERN EINER BRENNKRAFTMETHOD FOR PRODUCING SWITCHABLE VALVE DRIVE LINKS OF A COMBUSTION ENGINE
MASCHINE UND SCHALTBARES VENTILTRIEBSGLIEDMACHINE AND SWITCHABLE VALVE DRIVE
Bezeichnung der ErfindungName of the invention
55
Verfahren zur Herstellung von schaltbaren Ventiltriebsgliedern einer BrennkraftmaschineMethod for producing switchable valve drive elements of an internal combustion engine
Beschreibungdescription
1010
Gebiet der ErfindungField of the Invention
Die Erfindung betrifft ein Verfahren zur Herstellung von schaltbaren Ventiltriebsgliedern einer Brennkraftmaschine, wobei jedes Ventiltriebsglied wenig-The invention relates to a method for producing switchable valve drive members of an internal combustion engine, wherein each valve drive member
15 stens zwei zueinander relativ axial- oder verschwenkbewegliche Teile und zumindest ein Verriegelungsmittel wie einen Kolben hat, welches Verriegelungsmittel zum Zweck einer Verriegelung derartig von einem in Richtung zum anderen Teil verlagerbar ist, daß es eine Trennfläche zwischen den Teilen übergreift und in einer Aufnahme wie einer Bohrung des anderen Teils abschnitts-15 has at least two parts which are relatively axially or pivotable relative to one another and at least one locking means such as a piston, which locking means can be displaced from one towards the other for the purpose of locking in such a way that it overlaps a separating surface between the parts and in a receptacle such as one Bore the other part section
20 weise verläuft.20 runs wisely.
Hintergrund der ErfindungBackground of the Invention
25 Ein derartiges Ventiltriebsglied, hier als schaltbarer Rollenstößel für einen Stößelstangentrieb hergestellt, geht aus der DE 198 04 952, Figur 2, hervor. Gezeigt sind zwei sich diametral gegenüberliegende Kolben als Verriegelungsmittel, welche für den Verriegelungsfall in je eine Aufnahme eines Außenteils des Ventiltriebsglieds verlagerbar sind. Die dabei in Figur 4 offenbarte Verrie-25 Such a valve drive element, produced here as a switchable roller tappet for a tappet rod drive, is evident from DE 198 04 952, FIG. 2. Shown are two diametrically opposite pistons as locking means, which can be displaced into a receptacle of an outer part of the valve drive member for the locking case. The locking device disclosed in FIG.
30 gelung ist stets spielbehaftet. Dieses Verriegelungsspiel, also ein Relativweg, welchen ein die Verriegelungsmittel aufweisendes Innenelement relativ zu dem Außenteil bei Verriegelung und Nockenhub zurücklegt, ist zwar als Minimalspiel notwendig, damit die Verriegelung realisiert werden kann, jedoch ande- rerseits als zusätzlicher Leerweg auf den Ventilhub abzubilden. Vor Einbau in die Brennkraftmaschine schwankt dieses Spiel von Nockenfolger zu Nocken- folger. Die Varianz dieses Spiels wird innerhalb eines definierten Einstellbereichs für Verriegelungsspiele vorgegeben.30 success always involves play. This locking play, that is to say a relative path covered by an inner element having the locking means relative to the outer part during locking and cam lift, is necessary as a minimum play so that the locking can be implemented, but map on the other hand as an additional free travel on the valve lift. Before installation in the internal combustion engine, this play fluctuates from cam follower to cam follower. The variance of this game is specified within a defined setting range for locking games.
Nach Einbau in die Brennkraftmaschine kommt es zu einer verschleißbedingten Erhöhung des Verriegelungsspiels am einzelnen Nockenfolger. Diese wird insbesondere durch Glättung der Materialoberflächen, Materialverfestigung, Beseitigung der sogenannten Kantenträger, Abplattungen etc. verursacht. All- gemein gesagt finden somit im Verriegelungsbereich plastische und somit dauerhafte Verformungen statt, welche die vorgenannte Erhöhung des Verriegelungsspiels bewirken. Klar ist, daß während des Betriebs der Brennkraftmaschine das sich erhöhende Verriegelungsspiel nur innerhalb eines definierten Streubereichs für Verriegelungsspiele liegen darf. Die Qualität des Motorbe- triebs profitiert stark von einem sehr kleinen Streubereich der Verriegelungsspiele bei allen gleichartigen Ventiltriebsgliedern.After installation in the internal combustion engine, the locking play on the individual cam follower increases due to wear. This is caused in particular by smoothing the material surfaces, material hardening, removal of the so-called edge supports, flattening, etc. Generally speaking, plastic and therefore permanent deformations take place in the locking area, which bring about the aforementioned increase in the locking play. It is clear that during the operation of the internal combustion engine, the increasing locking play may only lie within a defined spread range for locking games. The quality of the engine operation benefits greatly from a very small spreading range of the locking play for all similar valve train elements.
Bei dem aus der DE 198 04 952 vorbekannten Nockenfolger muß ein sehr eng gehaltener Einstellbereich des Verriegelungsspiels vor dem Motorbetrieb ferti- gungs- und meßtechnisch garantiert werden, um den breiteren Streubereich des Verriegelungsspiels während des Motorbetriebs in den vorgegebenen Grenzen zu halten. Dieser eben genannte enge Einstellbereich erfordert äußerst aufwändige Gruppierungsmaßnahmen während der Montage. Damit einher geht ein unerwünscht großer Aufwand an Feinmeßmitteln bzw. eine relativ große Menge an Ausschuß oder Nacharbeit.In the cam follower known from DE 198 04 952, a very narrow adjustment range of the locking play prior to engine operation must be guaranteed in terms of production and measurement technology in order to keep the wider spreading range of the locking play within the specified limits during engine operation. This narrow adjustment range just mentioned requires extremely complex grouping measures during assembly. This is accompanied by an undesirably large amount of fine measuring means or a relatively large amount of rejects or rework.
Aufgabe der ErfindungObject of the invention
Aufgabe der Erfindung ist es daher, ein Verfahren zur Herstellung von schaltbaren Ventiltriebsgliedern zu schaffen, bei dem der Einstellbereich für Verrie- gelungsspiele deutlich gegenüber bisherigen Einstellbereichen vergrößert werden kann bzw. ein Verfahren der eingangs beschriebenen Art zu schaffen, bei dem die genannten Nachteile beseitigt sind.The object of the invention is therefore to provide a method for producing switchable valve drive elements, in which the setting range for locking achievement games can be significantly increased compared to previous setting ranges or to create a method of the type described above in which the disadvantages mentioned are eliminated.
Zusammenfassung der ErfindungSummary of the invention
Erfindungsgemäß wird diese Aufgabe durch die Merkmale des kennzeichnenden Teils des Anspruchs 1 gelöst. Demnach werden folgende Schritte erfindungsgemäß vorgeschlagen:According to the invention, this object is achieved by the features of the characterizing part of claim 1. Accordingly, the following steps are proposed according to the invention:
a) Messen eines Verriegelungsspiels am jeweiligen Ventiltriebsglied, d. h. des Relativwegs, welchen das eine Teil relativ zum anderen Teil im Verriegelungszustand des Verriegelungsmittels in Nockenhubrichtung zurücklegt, bis das Verriegelungsmittel in seiner Aufnahme verspannt ist;a) measuring a locking clearance on the respective valve drive element, d. H. the relative travel which one part travels relative to the other part in the locked state of the locking means in the cam stroke direction until the locking means is clamped in its receptacle;
b) Vergleichen ob das Verriegelungsspiel des jeweiligen Veπtiltriebsglieds innerhalb eines Einstellbereichs für Verriegelungsspiele an Ventiltriebsgliedern gleichen Typs für Brennkraftmaschinen gleichen Typs liegt und Bereithalten der entsprechenden Ventiltriebsglieder;b) comparing whether the locking play of the respective valve drive member lies within a setting range for locking play on valve drive members of the same type for internal combustion engines of the same type and having the corresponding valve drive members available;
c) Aufbringen einer zeitlich und kräftemäßig definierten Kraft auf jedes entsprechende Ventiltriebsglied in seine Verspannrichtung derart, daß eine Erhöhung des Verriegelungsspiels durch Vorverschleiß / Setzen im Kontaktbereich zwischen der Aufnahme und dem Verriegelungsmittel stattfindet;c) applying a force defined in terms of time and force to each corresponding valve drive element in its tensioning direction in such a way that an increase in the locking play takes place by pre-wear / setting in the contact area between the receptacle and the locking means;
d) Vergleichen ob das erhöhte Verriegelungsspiel des jeweiligen Ventiltriebsglieds innerhalb eines Einstellbereichs für erhöhte Verriegelungsspiele an Ventiltriebsgliedern gleichen Typs für Brennkraftmaschinen gleichen Typs liegt und Bereithalten der entsprechenden Ventiltriebsglieder; e) Einbau der entsprechenden Ventiltriebsglieder in die Brennkraftmaschine.d) comparing whether the increased locking play of the respective valve drive element lies within a setting range for increased locking play on valve drive elements of the same type for internal combustion engines of the same type and providing the corresponding valve drive elements; e) Installation of the corresponding valve drive elements in the internal combustion engine.
Durch diese Maßnahmen sind die eingangs beschriebenen Nachteile wir- kungsvoll vermieden. Durch den erfindungsgemäß vor der Montage des jeweiligen Nockenfolgers aufgebrachten „Vorverschleiß" erfolgt während des Betriebes des Motors nur noch ein relativ geringer „Nachverschleiß". Somit ergibt sich bei konstant vorgegebenem Streubereich der Verriegelungsspiele während des Betriebs des Motors eine deutliche Erweiterung des Einstellbereichs der Verriegelungsspiele vor dem Betrieb des Motors, also bei Montage des Nockenfolgers. Selbstverständlich streut der Einstellbereich nach dem Aufbringen des Vorverschleißes ebenfalls in beide Richtungen. Dies wird bei Bemessung des Einstellbereichs vor dem Aufbringen des Vorverschleißes berücksichtigt.These measures effectively avoid the disadvantages described at the outset. As a result of the “pre-wear” applied according to the invention prior to the assembly of the respective cam follower, only a relatively small “post-wear” occurs during operation of the engine. Thus, with a constant predetermined spreading range of the locking games during operation of the motor, there is a significant expansion of the setting range of the locking games before operation of the motor, that is to say when the cam follower is installed. Of course, the setting range also scatters in both directions after the pre-wear has been applied. This is taken into account when dimensioning the setting range before applying the pre-wear.
Der deutlich breiter liegende Einstellbereich für die Verriegelungsspiele bringt beispielsweise eine Entfeinerung des Gruppierungsaufwandes bei Montage mit sich. Es kann auch festgestellt werden, daß die Meßgenauigkeit während der Fertigung und Montage heruntergefahren werden kann bzw. das weniger Aus- schuß oder Nacharbeit wegen nicht eingehaltener Verriegelungsspieltoleranz vorliegt.The clearly wider setting range for the locking games brings with it, for example, a refinement of the grouping effort during assembly. It can also be ascertained that the measuring accuracy can be reduced during manufacture and assembly, or that there is less scrap or reworking due to failure to maintain the locking clearance tolerance.
Die Kraft wird zweckmäßigerweise und gemäß einer Konkretisierung der Erfindung so aufgebracht, daß sie lediglich die im Verriegelungsbereich liegenden Bauteile belastet. Ansonsten könnte es nach Aufbringen des Vorverschleißes dazu kommen, daß aufgrund dieser „Zeitraffermethode" Bauteile des Ventiltriebsglieds unerwünscht deformiert werden. Insbesondere ist hier an eine Rolle, die ggf. wälzgelagert sein kann, als unmittelbaren Nockengegenläufer am schaltbaren Ventiltriebsglied gedacht. Aber auch im Bereich einer Anlage- fläche einer Stößelstange (im Falle einer Ausbildung als schaltbarer Rollenstößel) könnte es bei nicht genügender Vorsicht zu unerwünschten Deformationen kommen. Weitere zweckmäßige Ausbildungen der Erfindung beziehen sich darauf, wie die Kraft zur Erzielung des Vorverschleißes eingebracht wird. Beispielsweise ist vorgeschlagen, die Kraft pulsierend zu applizieren, wobei jedoch gleichermaßen auch an eine einmalige Einwirkung gedacht wird. Letztgenannte Maß- nähme ist ggf. bei einer Massenfertigung vorteilhaft.The force is expediently and in accordance with a specification of the invention so applied that it only loads the components located in the locking area. Otherwise, after application of the pre-wear, components of the valve drive element could be undesirably deformed due to this "time-lapse method". In particular, a roller, which may be roller-supported, is intended as a direct cam counter-runner on the switchable valve drive element. But also in the area of one Contact surface of a push rod (in the case of training as a switchable roller tappet) could lead to undesired deformations if insufficient caution is taken. Further expedient embodiments of the invention relate to how the force for achieving the pre-wear is applied. For example, it is proposed to apply the force in a pulsating manner, although one-time action is also taken into account. The latter measure may be advantageous for mass production.
Des weiteren ist es vorgesehen, die Erhöhung des Verriegelungsspiels durch Aufbringen der definierten Kraft so zu realisieren, daß diese Erhöhung deutlich größer als eine restliche Erhöhung des verschleißbedingten Verriegelungs- spiels ist. Ggf. ist es jedoch auch denkbar, nur einen Teil der erst im Betrieb des Motors stattfindenden Erhöhung des Verriegelungsspiels im vorhinein schon abzubilden.Furthermore, it is provided to increase the locking play by applying the defined force in such a way that this increase is significantly greater than a remaining increase in the locking play due to wear. Possibly. it is also conceivable, however, to map in advance only a part of the increase in the locking play that takes place only when the motor is in operation.
Das erfindungsgemäße Verfahren kann gleichermaßen bei schaltbaren Ventil- triebsgliedern wie den genannten Rollenstößeln, aber auch bei Tassenstößeln, Abstützelementen, Ventiltriebsbrücken oder Hebelgruppen (Kipp-, Schlepp-, o. bspw. Schwinghebel) eingesetzt werden.The method according to the invention can be used equally with switchable valve drive elements such as the roller tappets mentioned, but also with cup tappets, support elements, valve drive bridges or lever groups (rocker arms, drag levers, or, for example, rocker arms).
Ein weiterer Anspruch bezieht sich alternativ auf ein schaltbares Ventiltriebs- glied, bei dem allgemein gesagt ein Vorverschleiß im Verriegelungsbereich zwischen dessen Aufnahme und Verriegelungsmittel hergestellt ist. Zu den Vorteilen hierzu siehe vorhergehende Diskussion.Another claim relates alternatively to a switchable valve drive member, in which, generally speaking, pre-wear is produced in the locking area between its receptacle and locking means. For the advantages of this, see the previous discussion.
Kurze Beschreibung der ZeichnungBrief description of the drawing
Die Erfindung ist zweckmäßigerweise anhand der Zeichnung näher erläutert. Es zeigen:The invention is expediently explained in more detail with reference to the drawing. Show it:
Figur 1 In einem Längsschnitt ein als Rollenstößel ausgebildetes Ventiltriebsglied und Figur 2 zur näheren Erläuterung der erfindungsgemäßen Maßnahmen ein Diagramm mit Darstellung der Einstellbereiche des Verriegelungsspiels.1 shows in a longitudinal section a valve drive member and designed as a roller tappet Figure 2 for a more detailed explanation of the measures according to the invention a diagram showing the setting ranges of the locking game.
Ausführliche Beschreibung der ZeichnungDetailed description of the drawing
Aus Figur 1 geht ein Ventiltriebsglied 1 hervor, welches hier als Rollenstößel hergestellt ist. Es besteht aus einem äußeren Teil 3, in welchem relativ axial beweglich zu diesem ein inneres Teil 2 eingebaut ist. In einer als Durchgangsbohrung ausgebildeten Aufnahme 6 des Teils 2 sind zwei sich diametral gegenüberliegende Verriegelungsmittel 4 angeordnet. Diese verlaufen im nicht verriegelten Zustand des Ventiltriebsglieds 1 vollständig in ihrer Aufnahme 6 und sind hier als Kolben ausgebildet. Den Verriegelungsmitteln 4 liegt in einer Nockenhubstellung je eine komplementäre Aufnahme 7 im äußeren Teil 3 für den Verriegelungsfall gegenüber. Im Fall der Verriegelung, die zeichnerisch gezeigt ist, welche hier über die Kraft einer Druckfeder 10 bewerkstelligt wird, übergreifen somit die Verriegelungsmittel 4 eine Trennfläche 5 zwischen den Teilen 2, 3 und verlaufen abschnittsweise in ihren Aufnahmen 7.1 shows a valve drive element 1, which is produced here as a roller tappet. It consists of an outer part 3, in which an inner part 2 is installed so that it can move relatively axially. Two diametrically opposite locking means 4 are arranged in a receptacle 6 of the part 2 designed as a through bore. In the unlocked state of the valve drive element 1, these run completely in their receptacle 6 and are designed here as pistons. In a cam stroke position, the locking means 4 each have a complementary receptacle 7 in the outer part 3 for the locking case. In the case of the locking, which is shown in the drawing, which is accomplished here via the force of a compression spring 10, the locking means 4 thus overlap a separating surface 5 between the parts 2, 3 and run in sections in their receptacles 7.
Des weiteren hat das Ventiltriebsglied 1 an einem Ende einer Rolle 8 als unmittelbaren Nockengegenläufer.Furthermore, the valve drive member 1 has at one end of a roller 8 as a direct cam counter-rotor.
Dargestellt ist, daß sich das äußere Teil 3 mit einem geringfügigen Ringbereich an einer Abstützung 9 anlehnt. Des weiteren ist an einem der Rolle 8 gegenüberliegenden Abschnitt des inneren Teils 2 eine Kraft F eingezeichnet. Diese Kraft F steht hier für eine nachfolgend näher erläuterte definierte Kraft, welche vor dem Einbau des Ventiltriebsglieds 1 in die entsprechende Brennkraftmaschine in Verspannrichtung des Ventiltriebsglieds 1 aufgebracht wird, um das Verriegelungsspiel VS definiert zu erhöhen. Das Verriegelungsspiel VS ist auch in Figur 1 eingetragen. Es steht für einen Relativweg, welchen das innere Teil 2 relativ zum äußeren Teil 3 im dargestellten Verriegelungszusta.nd der Verriegelungsmittel 4 bei Nockenhub zurücklegt, bis das Verriegelungsmittel 4 in seiner Aufnahme 7 verspannt ist (siehe auch Beschreibungseinleitung).It is shown that the outer part 3 rests with a slight ring area on a support 9. Furthermore, a force F is shown on a section of the inner part 2 opposite the roller 8. This force F here stands for a defined force, which is explained in more detail below and which is applied before the valve drive element 1 is installed in the corresponding internal combustion engine in the tensioning direction of the valve drive element 1 in order to increase the locking play VS in a defined manner. The locking game VS is also entered in Figure 1. It stands for a relative path, which the inner part 2 relative to the outer part 3 in the locking state shown . nd the Latches locking means 4 during cam stroke until locking means 4 is clamped in its seat 7 (see also introduction to description).
Beispielsweise wird diese o. g. Kraft F pulsierend aufgebracht, um somit vor- teilhafterweise einen Großbereich des während des Betriebes des Motors stattfindenden weiteren Setzvorgangs im Verriegelungsbereich (Erhöhung des Verriegelungsspiels VS) vorwegzunehmen.For example, this is. Force F is applied in a pulsating manner in order to advantageously anticipate a large area of the further setting process taking place during operation of the motor in the locking area (increasing the locking play VS).
Zur näheren Erläuterung des erfindungsgemäßen Verfahrens wird auf Figur 2 in Verbindung mit Figur 1 jetzt verwiesen. „SB" steht für einen Streubereich des Verriegelungsspiels während des Betriebs des Motors, innerhalb dessen sich das Verriegelungsspiel VS von Ventiltriebsgliedern gleichen Typs für Brennkraftmaschinen gleichen Typs über einen definierten Zeitraum t, vorteilhafterweise die Lebensdauer der Brennkraftmaschine, bewegen darf. Idealerweise ist der Streubereich SB, also ein Bereich zwischen minimalem Verriegelungsspiel VSmin und maximalem Verriegelungsspiel VSma , relativ schmal gehalten.For a more detailed explanation of the method according to the invention, reference is now made to FIG. 2 in connection with FIG. "SB" stands for a spreading range of the locking play during operation of the engine, within which the locking play VS of valve drive elements of the same type for internal combustion engines of the same type may move over a defined period t, advantageously the service life of the internal combustion engine. Ideally, the spreading range SB, that is, an area between the minimum locking clearance VSmin and the maximum locking clearance VSma, kept relatively narrow.
Klar ist, daß in der Praxis und bei längerem Motorbetrieb quasi kein Nockenfolger mit einem Verriegelungsspiel VS zu finden ist, welches sich im Bereich VSm bewegt. Durch die erfindungsgemäßen Maßnahmen wird sozusagen der Verschleiß, also eine Erhöhung des Verriegelungsspiels VS, hauptsächlich in den Bereich der Montage M vorverlegt. Somit ergibt sich bei festgelegtem Streubereich SB eine signifikante „Verbreiterung" des Einstellbereichs mit Vorverschleiß EBV und hierdurch auch ein deutlich größerer Einstellbereich EB vor Einbringung des Vorverschleißes. Somit kann der Einstellbereich EB des Verriegelungsspiels VS relativ breit gehalten werden, was zu den beschreibungseinleitend dargestellten Vorteilen, wie beispielsweise einer Entfeinerung des Gruppierungsaufwandes in Fertigung und Montage führt.It is clear that in practice and with longer engine operation there is practically no cam follower with a locking clearance VS which is in the VSm range. By means of the measures according to the invention, the wear, that is to say an increase in the locking play VS, is mainly brought forward into the area of the assembly M. This results in a significant "broadening" of the setting range with pre-wear EBV and thus also a significantly larger setting range EB before introducing the pre-wear with a defined spreading range SB. Thus, the setting range EB of the locking play VS can be kept relatively wide, which in addition to the advantages described in the introduction, such as a refinement of the grouping effort in manufacturing and assembly.
Der Einstellbereich mit Vorverschleiß (EBV) ist, wie der Fachmann leicht erkennt, deshalb breiter als der Einstellbereich EB ohne Vorverschleiß gehalten, weil die Erhöhung des Verriegelungsspiels VS durch Aufbringen der definierten Kraft F auch toleranzbehaftet ist. Liste der Bezugszahlen und -zeichenThe adjustment range with pre-wear (EBV), as the person skilled in the art easily recognizes, is therefore wider than the adjustment range EB without pre-wear because the increase in the locking play VS due to the application of the defined force F is also subject to tolerance. List of reference numbers and symbols
1 Ventiltriebsglied1 valve drive link
2 TeilPart 2
3 Teil3 part
4 Verriegelungsmittel4 locking means
5 Trennfläche5 dividing surface
6 Aufnahme6 recording
7 Aufnahme7 recording
8 Rolle8 roll
9 Abstützung9 support
10 Druckfeder10 compression spring
F KraftF force
VS Verriegelungsspiel t ZeitVS interlocking game t time
M MontageM assembly
B Betrieb des MotorsB Operation of the engine
EB EinstellbereichEB setting range
EBV Einstellbereich mit VorverschleißEBV adjustment range with pre-wear
V min Minimales VerriegelungsspielV min Minimum locking play
Vom» : Maximales VerriegelungsspielFrom » : Maximum locking play
SB Streubereich des Verriegelungsspiels SB spreading range of the locking play
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2003252832A AU2003252832A1 (en) | 2002-03-12 | 2003-01-15 | Method for the production of valve gear components of an internal combustion engine and controllable valve gear component |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10210747A DE10210747A1 (en) | 2002-03-12 | 2002-03-12 | Method for producing switchable valve drive elements of an internal combustion engine |
| DE10210747.5 | 2002-03-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2003076770A1 true WO2003076770A1 (en) | 2003-09-18 |
Family
ID=27797687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2003/000305 Ceased WO2003076770A1 (en) | 2002-03-12 | 2003-01-15 | Method for the production of valve gear components of an internal combustion engine and controllable valve gear component |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU2003252832A1 (en) |
| DE (1) | DE10210747A1 (en) |
| WO (1) | WO2003076770A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1712749A3 (en) * | 2005-04-11 | 2009-06-24 | Schaeffler KG | Switchable valve lifter |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7055479B2 (en) | 2003-12-20 | 2006-06-06 | Ina-Schaeffler Kg | Coupling mechanism |
| DE10360098B4 (en) * | 2003-12-20 | 2015-03-12 | Schaeffler Technologies AG & Co. KG | coupling mechanism |
| DE102005020580B4 (en) * | 2005-05-03 | 2017-06-14 | Schaeffler Technologies AG & Co. KG | Switchable cam follower |
| DE102006002967A1 (en) | 2006-01-21 | 2007-08-09 | Schaeffler Kg | Valve train of an internal combustion engine |
| DE102006029156A1 (en) * | 2006-06-24 | 2007-12-27 | Daimlerchrysler Ag | Valve drive play minimizing device for internal-combustion engine, has transmission unit with operable lever parts coupled with each other, where lever parts are designed in partial plastic deformable manner |
| DE102007002787A1 (en) | 2007-01-18 | 2008-07-24 | Schaeffler Kg | Switchable support element for a valve train of an internal combustion engine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0323234A1 (en) * | 1987-12-28 | 1989-07-05 | Honda Giken Kogyo Kabushiki Kaisha | Valve operating system for internal combustion engines |
| US5351661A (en) * | 1992-06-27 | 1994-10-04 | Mercedes-Benz Ag | Multi-cylinder internal combustion engine valve actuator |
| EP0652353A1 (en) * | 1993-11-08 | 1995-05-10 | Mercedes-Benz Ag | Device for operating the valves of an internal combustion engine |
| DE19604866A1 (en) * | 1996-02-10 | 1997-08-14 | Schaeffler Waelzlager Kg | Support system for rocker in internal combustion engine |
| EP0843078A1 (en) * | 1996-11-19 | 1998-05-20 | Honda Giken Kogyo Kabushiki Kaisha | Valve operating system in internal combustion engine |
| DE19804952A1 (en) * | 1998-02-07 | 1999-08-12 | Daimler Chrysler Ag | Disconnection control gear for an internal combustion engine valve |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02140407A (en) * | 1988-08-01 | 1990-05-30 | Honda Motor Co Ltd | Cylinder head structure of multi-cylinder engine |
| DE4404683C1 (en) * | 1994-02-15 | 1995-03-02 | Daimler Benz Ag | Method for minimising the clearance in a valve gear |
| DE19637066A1 (en) * | 1996-09-12 | 1998-03-19 | Mwp Mahle J Wizemann Pleuco Gm | Valve operating device with stop function |
-
2002
- 2002-03-12 DE DE10210747A patent/DE10210747A1/en not_active Withdrawn
-
2003
- 2003-01-15 AU AU2003252832A patent/AU2003252832A1/en not_active Abandoned
- 2003-01-15 WO PCT/EP2003/000305 patent/WO2003076770A1/en not_active Ceased
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0323234A1 (en) * | 1987-12-28 | 1989-07-05 | Honda Giken Kogyo Kabushiki Kaisha | Valve operating system for internal combustion engines |
| US5351661A (en) * | 1992-06-27 | 1994-10-04 | Mercedes-Benz Ag | Multi-cylinder internal combustion engine valve actuator |
| EP0652353A1 (en) * | 1993-11-08 | 1995-05-10 | Mercedes-Benz Ag | Device for operating the valves of an internal combustion engine |
| DE19604866A1 (en) * | 1996-02-10 | 1997-08-14 | Schaeffler Waelzlager Kg | Support system for rocker in internal combustion engine |
| EP0843078A1 (en) * | 1996-11-19 | 1998-05-20 | Honda Giken Kogyo Kabushiki Kaisha | Valve operating system in internal combustion engine |
| DE19804952A1 (en) * | 1998-02-07 | 1999-08-12 | Daimler Chrysler Ag | Disconnection control gear for an internal combustion engine valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1712749A3 (en) * | 2005-04-11 | 2009-06-24 | Schaeffler KG | Switchable valve lifter |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2003252832A1 (en) | 2003-09-22 |
| DE10210747A1 (en) | 2003-10-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE69403366T2 (en) | Valve tappet with roller | |
| EP1608849B1 (en) | Valve drive of an internal combustion engine comprising a cylinder head | |
| DE69703685T2 (en) | LOCKING DEVICE FOR A PISTON ROD OF A LINEAR DRIVE AND A LINEAR DRIVE EQUIPPED WITH IT | |
| DE2838995A1 (en) | METHOD AND DEVICE FOR MANUFACTURING AND ASSEMBLING A CAMSHAFT | |
| DE102007024092A1 (en) | camshaft | |
| DE102007027979A1 (en) | Valve drive for gas exchange valves of internal combustion engine, has camshaft, two cam pieces and holders, which are integrally formed on upper part of two-piece cylinder head housing | |
| DE102010004591A1 (en) | Cam carrier for valve train of combustion engine, has torque-proof and axially immoveable parts e.g. cam rings, link ring and inner bearing sleeve, mounted on pipe, where valve operating cams and shifting gate are formed at parts | |
| WO2011003865A1 (en) | Method for producing a lift transfer component | |
| DE69208917T2 (en) | Control device of a direct drive valve for an internal combustion engine | |
| DE4411214A1 (en) | Method for construction of plane bearing for vehicle seats | |
| DE102018103387A1 (en) | Connecting rod for a variable compression internal combustion engine | |
| DE102009005731A1 (en) | Valve train for e.g. inlet valves of cylinders of internal-combustion engine of rail-mounted vehicle, has locking device comprising two spring-tensioned latching balls that are arranged in borehole i.e. through-hole, of base camshaft | |
| DE2758199C2 (en) | ||
| WO2003076770A1 (en) | Method for the production of valve gear components of an internal combustion engine and controllable valve gear component | |
| DE69003871T2 (en) | Internal combustion engine tappet and method for its production. | |
| DE102019002562A1 (en) | ROLLING TOOLS AND METHOD FOR THE PRODUCTION THEREOF | |
| EP0733783A1 (en) | Rocker assembly | |
| DE102021130305B4 (en) | Reduction of the residual drag torque in a disc brake | |
| 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 | |
| DE4019072A1 (en) | Coil spring with spring seat for reciprocating components - has seat shaped to receive open-wound end of spring and is inserted between this end and moving component | |
| DE2544105A1 (en) | PRESSURE-ACTUATED DRIVE FOR CLOSING UNITS OF INJECTION MOLDING MACHINES | |
| DE102013203956A1 (en) | Cam follower for a valve train of an internal combustion engine | |
| DE2852293B1 (en) | Method and device for preventing inflation of a hydraulic valve lash adjuster | |
| DE102016120943A1 (en) | Connecting rod with adjusting mechanism between connecting rod and piston rod | |
| DE10027517A1 (en) | Shaft with hub with edge area of hub opening having profile formed by surface line of cone and merging into hub opening |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SC SD SE SG SK SL TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
| AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
| REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
| 122 | Ep: pct application non-entry in european phase | ||
| NENP | Non-entry into the national phase |
Ref country code: JP |
|
| WWW | Wipo information: withdrawn in national office |
Country of ref document: JP |