EP1260679A2 - Tappet in a combustion engine - Google Patents

Tappet in a combustion engine Download PDF

Info

Publication number
EP1260679A2
EP1260679A2 EP02009538A EP02009538A EP1260679A2 EP 1260679 A2 EP1260679 A2 EP 1260679A2 EP 02009538 A EP02009538 A EP 02009538A EP 02009538 A EP02009538 A EP 02009538A EP 1260679 A2 EP1260679 A2 EP 1260679A2
Authority
EP
European Patent Office
Prior art keywords
base
cup tappet
shirt
tappet
cup
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
EP02009538A
Other languages
German (de)
French (fr)
Other versions
EP1260679B1 (en
EP1260679A3 (en
Inventor
Werner Bretting
Hans Mönius
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayerische Motoren Werke AG
IHO Holding GmbH and Co KG
Original Assignee
INA Schaeffler KG
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 INA Schaeffler KG filed Critical INA Schaeffler KG
Publication of EP1260679A2 publication Critical patent/EP1260679A2/en
Publication of EP1260679A3 publication Critical patent/EP1260679A3/en
Application granted granted Critical
Publication of EP1260679B1 publication Critical patent/EP1260679B1/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
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/14—Tappets; Push rods
    • F01L1/143—Tappets; Push rods for use with overhead 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
    • F01L1/20—Adjusting or compensating clearance
    • F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
    • F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
    • F01L1/245—Hydraulic tappets
    • F01L1/25—Hydraulic tappets between cam and valve stem
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2820/00—Details on specific features characterising valve gear arrangements
    • F01L2820/01—Absolute values

Definitions

  • the invention relates to a tappet for a valve train of an internal combustion engine, with a hollow cylindrical shirt, one end with is connected to a floor for a cam contact.
  • Such a tappet comes from the DE considered as generic 41 15 668 A1. It is equipped with a hydraulic lash adjuster Mistake. The disadvantage is its relatively massive training, especially in Floor area. Because of this, the oscillating masses are in the valve train unnecessarily increased or excessive valve train work can be determined.
  • the object of the invention is therefore to provide a tappet of the aforementioned type to create that is optimized in terms of its weight.
  • this object is achieved in that the shirt is a significantly lower in height than the tappet overall, with the bottom tapered roof-like is lifted from the front.
  • This roof-like "raising" of the floor leads to an increase in rigidity in this area. This, in turn, can reduce the thickness of the soil can be significantly reduced to about 1.2 mm. At the same time, that by the concomitant reduction in a shirt's height and a Total area of the floor is now less area to be finished. This has an advantageous effect on production costs and effort.
  • the floor rectangular, so that from the face of the shirt two parallel sides in the direction of the floor extend, but may also be a truncated cone-like design can be realized with a circular bottom. However, the latter only lies a relatively small contact area for the cam on the floor.
  • the parallel sides to the floor are also trapezoidal side designs u. conceivable.
  • the bottom surface in the cam contact direction to run slightly cylindrical. This is a larger contact area generated for the cam.
  • the bottom with the sides and the shirt is advantageously made in one piece.
  • multi-part training is also conceivable, for example in a joining process.
  • At least one applied to the inside of the bottom can be stiffened Stiffening rib may be provided.
  • Stiffening rib may be provided.
  • an inner piston of the play compensation element lie against the stiffening ribs and at the same time there is a simple way to transfer oil from the plunger reservoir realized in a pantry of the game compensation element.
  • the floor generally has a thickness of approximately 1.2 mm to train. This can be done by optimizing stiffness using FEM calculations be created. Previous tappets have a minimal Bottom thickness of about 1.8 mm.
  • the single figure discloses a tappet 1 consisting of a hollow cylindrical shirt 2 with a cam-side face 3. From the face 3 extend two opposite, here concave Pages 4, which converge towards each other in the cam contact direction. Pages 4 turn into a floor 5 for direct cam contact.
  • This bottom 5 has a rectangular shape in plan view is made with a slightly cylindrical bulge.
  • a stiffening rib 6 can be seen on an inside 7 of the base 5 (Two stiffening ribs 6 located opposite one another like a kidney are provided - see introduction to the description). One lies on these stiffening ribs 6 Inner piston 8 of a hydraulic lash adjuster 9. Furthermore is shown that in the shirt 2 a recess 10 for an anti-rotation 11 is applied. The cup tappet 1 is secured via this anti-rotation device 11 in a longitudinal groove of a receptacle of a cylinder head of an internal combustion engine guided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

Vorgeschlagen ist ein Tassenstößel (1) für einen Ventiltrieb einer Brennkraftmaschine, mit einem hohlzylindrischen Hemd (2), dessen eine Stirnseite (3) mit einem Boden (5) für einen Nockenkontakt verbunden ist. Dabei besitzt das Hemd (2) erfindungsgemäß eine deutlich geringere Höhe als der Tassenstößel (1) insgesamt, wobei der Boden (5) dachartig verjüngt von der Stirnseite (3) abgehoben ist. Aufgrund dieser Ausbildung liegt ein sehr steifer Boden (5) vor, wodurch es gelingt, dessen Dicke (d) signifikant gegenüber bisherig ausgeführten Bodendicken zu minimieren. <IMAGE>A cup tappet (1) for a valve train of an internal combustion engine is proposed, with a hollow cylindrical shirt (2), one end face (3) of which is connected to a base (5) for a cam contact. According to the invention, the shirt (2) has a significantly lower height than the tappet (1) as a whole, the base (5) being lifted off from the end face (3) in a tapered manner. Because of this design, there is a very rigid base (5), which makes it possible to significantly minimize its thickness (d) compared to previous base thicknesses. <IMAGE>

Description

Gebiet der ErfindungField of the Invention

Die Erfindung betrifft einen Tassenstößel für einen Ventiltrieb einer Brennkraftmaschine, mit einen hohlzylindrischen Hemd, dessen eine Stirnseite mit einem Boden für einen Nockenkontakt verbunden ist.The invention relates to a tappet for a valve train of an internal combustion engine, with a hollow cylindrical shirt, one end with is connected to a floor for a cam contact.

Hintergrund der ErfindungBackground of the Invention

Ein derartiger Tassenstößel geht aus der als gattungsbildend betrachteten DE 41 15 668 A1 hervor. Er ist mit einem hydraulischen Spielausgleichselement versehen. Nachteilig ist dessen relativ massive Ausbildung, insbesondere im Bodenbereich. Aufgrund dessen sind die oszillierenden Massen im Ventiltrieb unnötig erhöht bzw. ist eine zu große Ventiltriebsarbeit festzustellen.Such a tappet comes from the DE considered as generic 41 15 668 A1. It is equipped with a hydraulic lash adjuster Mistake. The disadvantage is its relatively massive training, especially in Floor area. Because of this, the oscillating masses are in the valve train unnecessarily increased or excessive valve train work can be determined.

Aufgabe der ErfindungObject of the invention

Aufgabe der Erfindung ist es daher, einen Tassenstößel der vorgenannten Art zu schaffen, der hinsichtlich seines Gewichts optimiert ist. The object of the invention is therefore to provide a tappet of the aforementioned type to create that is optimized in terms of its weight.

Zusammenfassung der ErfindungSummary of the invention

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß das Hemd eine deutlich geringere Höhe als der Tassenstößel insgesamt hat, wobei der Boden dachartig verjüngt von der Stirnseite abgehoben ist.According to the invention this object is achieved in that the shirt is a significantly lower in height than the tappet overall, with the bottom tapered roof-like is lifted from the front.

Besonders zweckmäßig ist es, wenn gemäß einer ersten Konkretisierung der Erfindung der Boden einen sich in Auswanderungsrichtung einer Fläche des Nockenkontakts erstreckenden rechteckartigen Verlauf hat.It is particularly expedient if, according to a first specification Invention of the ground itself in the emigration direction of a surface of the Cam contact extending rectangular shape.

Durch diese dachartige "Anhebung" des Bodens kommt es zu einer Steifigkeitserhöhung in diesem Bereich. Hierdurch wiederum kann die Bodendicke signifikant bis auf etwa 1,2 mm reduziert werden. Gleichzeitig ist festzustellen, daß durch die einhergehende Verringerung einer Höhe des Hemdes und einer Gesamtfläche des Bodens nunmehr weniger Fläche feinzubearbeiten ist. Dies wirkt sich vorteilhaft auf die Fertigungskosten und den -aufwand aus.This roof-like "raising" of the floor leads to an increase in rigidity in this area. This, in turn, can reduce the thickness of the soil can be significantly reduced to about 1.2 mm. At the same time, that by the concomitant reduction in a shirt's height and a Total area of the floor is now less area to be finished. This has an advantageous effect on production costs and effort.

Zwar ist insbesondere daran gedacht, den Boden rechteckig auszubilden, so daß sich von der Stirnfläche des Hemdes zwei parallele Seiten in Bodenrichtung erstrecken, jedoch kann ggf. auch eine kegelstumpfähnliche Ausbildung mit einem kreisförmigen Boden realisiert werden. Bei Letzterem liegt jedoch nur eine relativ geringe Kontaktfläche für den Nocken am Boden vor.In particular, it is contemplated to make the floor rectangular, so that from the face of the shirt two parallel sides in the direction of the floor extend, but may also be a truncated cone-like design can be realized with a circular bottom. However, the latter only lies a relatively small contact area for the cam on the floor.

Anstelle der in Fortbildung der Erfindung vorgeschlagenen konkaven Ausbildung der parallelen Seiten zum Boden sind auch trapezartige Seitengestaltungen u. ä. denkbar.Instead of the concave formation proposed in a further development of the invention the parallel sides to the floor are also trapezoidal side designs u. conceivable.

Des weiteren ist es Erfindungsbestandteil, die Bodenfläche in Nockenkontaktrichtung leicht zylindrisch verlaufen zu lassen. Somit ist eine größere Aufstandsfläche für den Nocken generiert. Furthermore, it is part of the invention, the bottom surface in the cam contact direction to run slightly cylindrical. This is a larger contact area generated for the cam.

Vorteilhafterweise ist der Boden mit den Seiten und dem Hemd einteilig gefertigt. Denkbar ist jedoch auch eine mehrteilige Ausbildung, beispielsweise in einem Fügeverfahren.The bottom with the sides and the shirt is advantageously made in one piece. However, multi-part training is also conceivable, for example in a joining process.

Zur Versteifung des Bodens kann mindestens eine an dessen Innenseite applizierte Versteifungsrippe vorgesehen sein. Denkbar sind beispielsweise zwei sich nierenartig gegenüberliegende Versteifungsrippen. Sollte der Tassenstößel ein hydraulisches Spielausgleichselement besitzen, so kann dann ein Innenkolben des Spielausgleichselements an den Versteifungsrippen anliegen und gleichzeitig ist somit auf einfache Art und Weise ein Ölübertritt vom Stößelvorratsraum in einen Vorratsraum des Spielausgleichselements realisiert.At least one applied to the inside of the bottom can be stiffened Stiffening rib may be provided. For example, two are conceivable opposing stiffening ribs like kidneys. Should the tappet have a hydraulic lash adjuster, then an inner piston of the play compensation element lie against the stiffening ribs and at the same time there is a simple way to transfer oil from the plunger reservoir realized in a pantry of the game compensation element.

Insbesondere für die Ausbildung mit dem rechteckartigen Bodenverlauf ist es vorgeschlagen, im Hemd wenigstens eine Verdrehsicherung zu applizieren. Hier kann auf die an sich bekannten Mittel wie Rollennadeln, Kugeln, Keile und ähnliches zurückgegriffen werden.It is particularly suitable for training with the rectangular bottom shape proposed to apply at least one anti-rotation device in the shirt. Here you can use the known means such as roller needles, balls, wedges and similar can be resorted to.

Schließlich ist es vorgesehen, den Boden generell mit einer Dicke von etwa 1,2 mm auszubilden. Dies kann durch Steifigkeitsoptimierungen mittels FEM-Berechnungen geschaffen werden. Bisherige Tassenstößel besitzen eine minimale Bodendicke von etwa 1,8 mm.Finally, it is provided that the floor generally has a thickness of approximately 1.2 mm to train. This can be done by optimizing stiffness using FEM calculations be created. Previous tappets have a minimal Bottom thickness of about 1.8 mm.

Der Schutzbereich der Erfindung bezieht sich wie genannt gleichermaßen auf hydraulische und mechanische Tassenstößel.As mentioned, the scope of the invention relates equally hydraulic and mechanical bucket tappets.

Kurze Beschreibung der ZeichnungBrief description of the drawing

Die Erfindung ist anhand der Zeichnung näher erläutert. Es zeigt die einzige Figur in einer räumlichen Darstellung einen teilweise aufgeschnittenen erfindungsgemäßen Tassenstößel. The invention is explained in more detail with reference to the drawing. It shows the only one Figure in a spatial representation of a partially cut according to the invention Tappets.

Ausführliche Beschreibung der ZeichnungDetailed description of the drawing

Die einzige Figur offenbart einen Tassenstößel 1, bestehend aus einem hohlzylindrischen Hemd 2 mit einer nockenseitigen Stirnseite 3. Von der Stirnseite 3 erstrecken sich zwei gegenüberliegende, hier konkav ausgebildete Seiten 4, welche in Nockenkontaktrichtung aufeinander zulaufen. Die Seiten 4 wiederum gehen in einen Boden 5 für einen unmittelbaren Nockenkontakt über. Dieser Boden 5 hat in Draufsicht gesehen einen rechteckförmigen Verlauf und ist leicht zylindrisch ausgewölbt hergestellt.The single figure discloses a tappet 1 consisting of a hollow cylindrical shirt 2 with a cam-side face 3. From the face 3 extend two opposite, here concave Pages 4, which converge towards each other in the cam contact direction. Pages 4 turn into a floor 5 for direct cam contact. This bottom 5 has a rectangular shape in plan view is made with a slightly cylindrical bulge.

Aufgrund der dachartig verjüngten Ausgestaltung des Bodens 5 liegt in diesem Bereich eine sehr steife Konfiguration vor. Somit kann entweder die Stößelbelastung generell erhöht werden oder, und dies ist Hauptziel der Erfindung, gelingt es hierdurch eine Dicke d des Bodens 5 signifikant gegenüber bisherig ausgeführten Bodendicken bis auf einen Bereich von etwa 1,2 mm zu verdünnen.Due to the roof-like tapered design of the bottom 5 lies in this Area a very rigid configuration. Thus either the ram load generally increased or, and this is the main aim of the invention, succeed this means that a thickness d of the base 5 is significant compared to the previous one executed floor thicknesses to a range of about 1.2 mm.

Zu erkennen ist eine Versteifungsrippe 6 an einer Innenseite 7 des Bodens 5 (zwei sich nierenartig gegenüberliegende Versteifungsrippen 6 sind vorgesehen - siehe Beschreibungseinleitung). An diesen Versteifungsrippen 6 liegt ein Innenkolben 8 eines hydraulischen Spielausgleichselements 9 an. Des weiteren ist dargestellt, daß im Hemd 2 eine Aussparung 10 für eine Verdrehsicherung 11 appliziert ist. Über diese Verdrehsicherung 11 wird der Tassenstößel 1 in einer Längsnut einer Aufnahme eines Zylinderkopfes einer Brennkraftmaschine geführt. A stiffening rib 6 can be seen on an inside 7 of the base 5 (Two stiffening ribs 6 located opposite one another like a kidney are provided - see introduction to the description). One lies on these stiffening ribs 6 Inner piston 8 of a hydraulic lash adjuster 9. Furthermore is shown that in the shirt 2 a recess 10 for an anti-rotation 11 is applied. The cup tappet 1 is secured via this anti-rotation device 11 in a longitudinal groove of a receptacle of a cylinder head of an internal combustion engine guided.

Liste der Bezugszahlen und -zeichenList of reference numbers and symbols

11
Tassenstößeltappets
22
Hemdshirt
33
Stirnseitefront
44
Seitepage
55
Bodenground
66
Versteifungsrippestiffening rib
77
Innenseiteinside
88th
Innenkolbeninternal piston
99
Hydraulisches SpielausgleichselementHydraulic lash adjuster
1010
Aussparungrecess
1111
Verdrehsicherungtwist
dd
Dicke BodenThick bottom

Claims (9)

Tassenstößel (1) für einen Ventiltrieb einer Brennkraftmaschine, mit einem hohlzylindrischen Hemd (2), dessen eine Stirnseite (3) mit einem Boden (5) für einen Nockenkontakt verbunden ist, dadurch gekennzeichnet, dass das Hemd (2) eine deutlich geringere Höhe als der Tassenstößel (1) insgesamt hat, wobei der Boden (5) dachartig verjüngt von der Stirnseite (3) abgehoben ist.Cup tappet (1) for a valve train of an internal combustion engine, with a hollow cylindrical shirt (2), one end face (3) of which is connected to a base (5) for a cam contact, characterized in that the shirt (2) has a significantly lower height than the bucket tappet (1) has in total, the base (5) tapering from the front (3) being lifted like a roof. Tassenstößel nach Anspruch 1, dadurch gekennzeichnet, dass der Boden (5) einen sich in Auswanderungsrichtung einer Fläche des Nockenkontakts erstreckenden rechteckartigen Verlauf hat.Cup tappet according to claim 1, characterized in that the bottom (5) has a rectangular course extending in the direction of emigration of a surface of the cam contact. Tassenstößel nach Anspruch 2, dadurch gekennzeichnet, dass den Boden (5) mit der Stirnseite (3) verbindende Seiten (4) im wesentlichen konkav ausgebildet sind.Cup tappet according to Claim 2, characterized in that the sides (4) connecting the base (5) to the end face (3) are essentially concave. Tassenstößel nach dem Oberbegriff des Anspruchs 1 oder nach Anspruch 1, dadurch gekennzeichnet, dass der Boden (5) eine Dicke d [mm] im Bereich von 1,1 < d < 1,85 hat.Cup tappet according to the preamble of claim 1 or according to claim 1, characterized in that the base (5) has a thickness d [mm] in the range from 1.1 <d <1.85. Tassenstößel nach dem Oberbegriff des Anspruchs 1 oder nach Anspruch 1, dadurch gekennzeichnet, dass der Boden (5) eine Dicke d [mm] von ca. 1,2 aufweist. Cup tappet according to the preamble of claim 1 or according to claim 1, characterized in that the bottom (5) has a thickness d [mm] of approximately 1.2. Tassenstößel nach Anspruch 2, dadurch gekennzeichnet, dass der Boden (5) in die Auswanderungsrichtung gesehen zylindrisch ausgewölbt ist.Cup tappet according to claim 2, characterized in that the bottom (5) is cylindrically curved as seen in the direction of emigration. Tassenstößel nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Hemd (2) von wenigstens einer Verdrehsicherung (11) überragt ist.Cup tappet according to claim 1 or 2, characterized in that the shirt (2) is surmounted by at least one anti-rotation device (11). Tassenstößel nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Tassenstößel (1) mit einem hydraulischen Spielausgleichselement (9) versehen ist.Cup tappet according to one of the preceding claims, characterized in that the cup tappet (1) is provided with a hydraulic play compensation element (9). Tassenstößel nach Anspruch 1 oder 8, dadurch gekennzeichnet, dass eine Innenseite (7) des Bodens (5) zumindest eine einteilig mit diesem verbundene Versteifungsrippe (6) besitzt.Cup tappet according to claim 1 or 8, characterized in that an inner side (7) of the base (5) has at least one stiffening rib (6) connected in one piece to it.
EP02009538A 2001-05-17 2002-04-26 Tappet in a combustion engine Expired - Lifetime EP1260679B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10123966A DE10123966A1 (en) 2001-05-17 2001-05-17 Bucket tappet for valve drive has jacket with appreciably lower height than bucket tappet as whole
DE10123966 2001-05-17

Publications (3)

Publication Number Publication Date
EP1260679A2 true EP1260679A2 (en) 2002-11-27
EP1260679A3 EP1260679A3 (en) 2003-08-13
EP1260679B1 EP1260679B1 (en) 2005-02-09

Family

ID=7685093

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02009538A Expired - Lifetime EP1260679B1 (en) 2001-05-17 2002-04-26 Tappet in a combustion engine

Country Status (4)

Country Link
US (1) US6622679B2 (en)
EP (1) EP1260679B1 (en)
JP (1) JP4180302B2 (en)
DE (2) DE10123966A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1600609A3 (en) * 2004-05-25 2008-10-15 Schaeffler KG Valve lifter for an internal combustion engine
WO2012013376A1 (en) * 2010-07-26 2012-02-02 Schaeffler Technologies Gmbh & Co. Kg Cup tappet and method for producing same

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3593081B2 (en) * 2001-10-02 2004-11-24 三菱電機株式会社 Fuel supply device
DE102004056458A1 (en) * 2004-11-23 2006-06-14 Schaeffler Kg tappets
DE102004056457A1 (en) 2004-11-23 2006-06-08 Schaeffler Kg Cup tappets for an internal combustion engine
DE102004058766A1 (en) 2004-12-07 2006-06-08 Schaeffler Kg Bucket tappet for internal combustion engine has torsional stop element having wall with front surface supported radially inwards along outer lateral surface of cover and runs circumferentially along longitudinal axis of torsional stop
DE102013211279A1 (en) 2013-06-17 2014-12-18 Schaeffler Technologies Gmbh & Co. Kg Cup tappets for the valve train of an internal combustion engine
DE102014216961A1 (en) * 2014-08-26 2016-03-03 Schaeffler Technologies AG & Co. KG Cup tappets and method for its production
DE102015215272A1 (en) 2015-08-11 2017-02-16 Schaeffler Technologies AG & Co. KG Cup tappets for a valve train of an internal combustion engine

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2663288A (en) * 1952-09-02 1953-12-22 Loyd F Ashley Variable timing cam follower
EP0292185A2 (en) * 1987-05-21 1988-11-23 Jaguar Cars Limited Cam mechanisms
DE4118370A1 (en) * 1991-06-05 1992-12-10 Bayerische Motoren Werke Ag Positively locked valve tappet - has form-closed fitting inserted into a recess in tappet wall
US5231960A (en) * 1991-06-21 1993-08-03 Ambrose White Method and appparatus for varying intake and exhaust valve opening and closing in a reciprocating piston engine
EP0719909A1 (en) * 1994-12-22 1996-07-03 FIAT AUTO S.p.A. A valve control system for an internal combustion engine
US5823151A (en) * 1995-04-26 1998-10-20 Ina Walzlager Schaeffler Kg Valve gear cam follower in an internal combustion engine
DE19728100A1 (en) * 1997-07-02 1999-01-07 Schaeffler Waelzlager Ohg Pushrod for IC engine valve drive
WO1999036677A1 (en) * 1998-01-19 1999-07-22 Darut Pty. Ltd. Cam and cam followers for engines

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR454518A (en) 1913-02-18 1913-07-07 Leon Guillaume Improvement in the layout and construction of the organs that open the doors by moving an air column
US3238933A (en) * 1964-05-25 1966-03-08 Johnson Products Inc Tappet
DE3445823A1 (en) * 1984-12-15 1986-06-26 Bayerische Motoren Werke AG, 8000 München Valve timing gear, especially for internal combustion engines
FR2661211B1 (en) * 1990-04-24 1992-08-14 Peugeot DEVICE FOR ACTUATING TWO NEIGHBORING VALVES.
US5226389A (en) * 1992-11-04 1993-07-13 Eaton Corporation Direct acting tappet
DE4325610A1 (en) * 1993-07-30 1995-02-02 Schaeffler Waelzlager Kg Cup-shaped valve lifter
EP1164258A3 (en) * 1997-03-27 2003-01-02 Toyota Jidosha Kabushiki Kaisha Valve driving apparatus for engine
US6021751A (en) * 1999-02-18 2000-02-08 General Motors Corporation Hydraulic valve lifter with lash

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2663288A (en) * 1952-09-02 1953-12-22 Loyd F Ashley Variable timing cam follower
EP0292185A2 (en) * 1987-05-21 1988-11-23 Jaguar Cars Limited Cam mechanisms
DE4118370A1 (en) * 1991-06-05 1992-12-10 Bayerische Motoren Werke Ag Positively locked valve tappet - has form-closed fitting inserted into a recess in tappet wall
US5231960A (en) * 1991-06-21 1993-08-03 Ambrose White Method and appparatus for varying intake and exhaust valve opening and closing in a reciprocating piston engine
EP0719909A1 (en) * 1994-12-22 1996-07-03 FIAT AUTO S.p.A. A valve control system for an internal combustion engine
US5823151A (en) * 1995-04-26 1998-10-20 Ina Walzlager Schaeffler Kg Valve gear cam follower in an internal combustion engine
DE19728100A1 (en) * 1997-07-02 1999-01-07 Schaeffler Waelzlager Ohg Pushrod for IC engine valve drive
WO1999036677A1 (en) * 1998-01-19 1999-07-22 Darut Pty. Ltd. Cam and cam followers for engines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1600609A3 (en) * 2004-05-25 2008-10-15 Schaeffler KG Valve lifter for an internal combustion engine
WO2012013376A1 (en) * 2010-07-26 2012-02-02 Schaeffler Technologies Gmbh & Co. Kg Cup tappet and method for producing same

Also Published As

Publication number Publication date
US20020170516A1 (en) 2002-11-21
EP1260679B1 (en) 2005-02-09
JP4180302B2 (en) 2008-11-12
DE10123966A1 (en) 2002-11-21
JP2003003806A (en) 2003-01-08
DE50202197D1 (en) 2005-03-17
EP1260679A3 (en) 2003-08-13
US6622679B2 (en) 2003-09-23

Similar Documents

Publication Publication Date Title
DE4133033C2 (en) Rocker arm
DE3929486C2 (en) Cold formed rocker arm
DE102004007766A1 (en) Cam follower for valve gear of internal combustion engine has arms of outer lever connected to transverse beam, and slide interconnecting outer and inner levers is movable in longitudinal bore to act on underside of transverse beam
DE19781449B4 (en) Control lever for valve gear mechanism of IC engine - has U=shaped noncut metal sheet with lower wall having downwardly opening recesses arranged to contain and securely hold crosshead shoe of valve shaft
EP1619358A1 (en) Periodically actuated tappet for a valve or pump drive
DE4404145A1 (en) Switching device in a valve train
DE3622245A1 (en) ROLLER TOWEL ARRANGEMENT WITH TORQUE PROTECTION, ESPECIALLY FOR INTERNAL COMBUSTION ENGINES
DE4336360A1 (en) Cam follower rocker arm for actuating two valves
DE4302877C2 (en) Pestle
EP0779411B1 (en) Valve driving device for an internal combustion engine
DE3713646C2 (en)
EP1600609B1 (en) Valve lifter for an internal combustion engine
EP1260679A2 (en) Tappet in a combustion engine
EP1601862A1 (en) Valve lever of a valve gear of an internal combustion engine
EP1881165A2 (en) Switchable valve operating mechanism for a combustion engine
DE19700736B4 (en) Valve gear of an internal combustion engine
DE102005054086A1 (en) Internal combustion engine`s valve train, has one-way valve unit installed in pushrod for retaining hydraulic medium column during standstill of engine, where pushrod has ends with two supports
WO2008101784A1 (en) Switchable cup tappet
DE102005006954A1 (en) Switchable drag lever of a valve train of an internal combustion engine
DE4039075C2 (en) Valve train for at least two simultaneously operated lift valves
DE102004039705A1 (en) Switchable plunger
DE10123964A1 (en) Switchable tappet for internal combustion engine has coil compression spring which widens conically towards pushrod
WO1992015776A1 (en) Hydraulic valve-tappet for internal-combustion engines
WO1996037687A1 (en) Valve gear for an internal combustion engine
DE2943246A1 (en) MECHANICAL VALVE COMPENSATION COMPENSATION DEVICE FOR INTERNAL COMBUSTION ENGINES

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20020426

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 01L 1/14 A

Ipc: 7F 01L 1/24 B

Ipc: 7F 01L 13/00 B

Ipc: 7F 01L 1/16 B

17Q First examination report despatched

Effective date: 20031124

AKX Designation fees paid

Designated state(s): DE FR GB IT

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

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: 50202197

Country of ref document: DE

Date of ref document: 20050317

Kind code of ref document: P

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

Effective date: 20050601

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT

Owner name: INA- SCHAEFFLER KG

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

RIN2 Information on inventor provided after grant (corrected)

Inventor name: OTTEN, REINHOLD

Inventor name: MOENIUS, HANS

Inventor name: BRETTING, WERNER

Inventor name: PATER, PIET

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20051110

ET Fr: translation filed
REG Reference to a national code

Ref country code: FR

Ref legal event code: TQ

Ref country code: FR

Ref legal event code: AU

REG Reference to a national code

Ref country code: FR

Ref legal event code: CD

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

Ref country code: FR

Payment date: 20090417

Year of fee payment: 8

Ref country code: IT

Payment date: 20090424

Year of fee payment: 8

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20101230

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

Ref country code: IT

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

Effective date: 20100426

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

Ref country code: FR

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

Effective date: 20100430

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 50202197

Country of ref document: DE

Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, DE

Free format text: FORMER OWNER: BAYERISCHE MOTOREN WERKE AKTIEN, SCHAEFFLER TECHNOLOGIES GMBH &, , DE

Effective date: 20120828

Ref country code: DE

Ref legal event code: R081

Ref document number: 50202197

Country of ref document: DE

Owner name: BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT, DE

Free format text: FORMER OWNER: BAYERISCHE MOTOREN WERKE AKTIEN, SCHAEFFLER TECHNOLOGIES GMBH &, , DE

Effective date: 20120828

Ref country code: DE

Ref legal event code: R081

Ref document number: 50202197

Country of ref document: DE

Owner name: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, DE

Free format text: FORMER OWNER: BAYERISCHE MOTOREN WERKE AKTIEN, SCHAEFFLER TECHNOLOGIES GMBH &, , DE

Effective date: 20120828

Ref country code: DE

Ref legal event code: R081

Ref document number: 50202197

Country of ref document: DE

Owner name: BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT, DE

Free format text: FORMER OWNERS: BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT, 80809 MUENCHEN, DE; SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, 91074 HERZOGENAURACH, DE

Effective date: 20120828

Ref country code: DE

Ref legal event code: R081

Ref document number: 50202197

Country of ref document: DE

Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, DE

Free format text: FORMER OWNERS: BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT, 80809 MUENCHEN, DE; SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, 91074 HERZOGENAURACH, DE

Effective date: 20120828

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 50202197

Country of ref document: DE

Owner name: BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT, DE

Free format text: FORMER OWNER: BAYERISCHE MOTOREN WERKE AKTIEN, SCHAEFFLER TECHNOLOGIES AG & CO, , DE

Effective date: 20140211

Ref country code: DE

Ref legal event code: R081

Ref document number: 50202197

Country of ref document: DE

Owner name: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, DE

Free format text: FORMER OWNER: BAYERISCHE MOTOREN WERKE AKTIEN, SCHAEFFLER TECHNOLOGIES AG & CO, , DE

Effective date: 20140211

Ref country code: DE

Ref legal event code: R081

Ref document number: 50202197

Country of ref document: DE

Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, DE

Free format text: FORMER OWNER: BAYERISCHE MOTOREN WERKE AKTIEN, SCHAEFFLER TECHNOLOGIES AG & CO, , DE

Effective date: 20140211

Ref country code: DE

Ref legal event code: R081

Ref document number: 50202197

Country of ref document: DE

Owner name: BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT, DE

Free format text: FORMER OWNERS: BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT, 80809 MUENCHEN, DE; SCHAEFFLER TECHNOLOGIES AG & CO. KG, 91074 HERZOGENAURACH, DE

Effective date: 20140211

Ref country code: DE

Ref legal event code: R081

Ref document number: 50202197

Country of ref document: DE

Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, DE

Free format text: FORMER OWNERS: BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT, 80809 MUENCHEN, DE; SCHAEFFLER TECHNOLOGIES AG & CO. KG, 91074 HERZOGENAURACH, DE

Effective date: 20140211

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 50202197

Country of ref document: DE

Owner name: BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT, DE

Free format text: FORMER OWNER: BAYERISCHE MOTOREN WERKE AKTIEN, SCHAEFFLER TECHNOLOGIES GMBH &, , DE

Effective date: 20150323

Ref country code: DE

Ref legal event code: R081

Ref document number: 50202197

Country of ref document: DE

Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, DE

Free format text: FORMER OWNER: BAYERISCHE MOTOREN WERKE AKTIEN, SCHAEFFLER TECHNOLOGIES GMBH &, , DE

Effective date: 20150323

Ref country code: DE

Ref legal event code: R081

Ref document number: 50202197

Country of ref document: DE

Owner name: BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT, DE

Free format text: FORMER OWNERS: BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT, 80809 MUENCHEN, DE; SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, 91074 HERZOGENAURACH, DE

Effective date: 20150323

Ref country code: DE

Ref legal event code: R081

Ref document number: 50202197

Country of ref document: DE

Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, DE

Free format text: FORMER OWNERS: BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT, 80809 MUENCHEN, DE; SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, 91074 HERZOGENAURACH, DE

Effective date: 20150323

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

Ref country code: GB

Payment date: 20200429

Year of fee payment: 19

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

Ref country code: DE

Payment date: 20210618

Year of fee payment: 20

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

Effective date: 20210426

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

Ref country code: GB

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

Effective date: 20210426

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 50202197

Country of ref document: DE