EP2284366B1 - Composant commutable d'une commande de soupape d'un moteur à combustion interne - Google Patents

Composant commutable d'une commande de soupape d'un moteur à combustion interne Download PDF

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Publication number
EP2284366B1
EP2284366B1 EP10168445A EP10168445A EP2284366B1 EP 2284366 B1 EP2284366 B1 EP 2284366B1 EP 10168445 A EP10168445 A EP 10168445A EP 10168445 A EP10168445 A EP 10168445A EP 2284366 B1 EP2284366 B1 EP 2284366B1
Authority
EP
European Patent Office
Prior art keywords
housing
component according
inner element
tubular portion
coupling
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.)
Not-in-force
Application number
EP10168445A
Other languages
German (de)
English (en)
Other versions
EP2284366A1 (fr
Inventor
Robert Heinemann
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.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and Co 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 Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Publication of EP2284366A1 publication Critical patent/EP2284366A1/fr
Application granted granted Critical
Publication of EP2284366B1 publication Critical patent/EP2284366B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • 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
    • F01L1/2405—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically by means of a hydraulic adjusting device located between the cylinder head and rocker arm
    • 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
    • F01L1/2422—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically by means or a hydraulic adjusting device located between the push rod and rocker arm
    • 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
    • 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
    • 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
    • F01L2303/00—Manufacturing of components used in valve arrangements

Definitions

  • the invention relates to a switchable as a cam follower or support member for a cam follower switchable component of a valve engine of an internal combustion engine, with a hollow cylindrical housing which is telescopically mated with a relatively movable inner element, which inner element a transverse bore as a radial bore with at least one decoupling case [smaller or 0-valve lift] running therein and acted upon by a restoring means coupling slide is immanent in the coupling case [full valve lift] via a Zustellstoff in sections in a recess of the housing with a driver surface is displaceable and wherein between the housing and inner member acts a return spring.
  • Such a component designed here as a roller tappet for a ram rod drive, goes out of the US 6,578,535 out.
  • the end FIG. 2 apparent housing is made by extrusion technology and post-machined.
  • the coupling slide extend in a radial bore of the inner member and can for a coupling case in an annular groove in the inner shell of the housing sections be extended. The annular groove is machined out of the inner jacket.
  • the object of the invention is therefore to provide a component of the type described, in which the cited disadvantages are eliminated.
  • this object is achieved in that the recess of the housing is formed by two axially opposite Ringstirnen on one of which the Mit supportive utilitarian utilitarian utilitarian sake is formed, each annular end end component of a separate, thin-walled and tube-like portion, each with its outer shell sections an inner shell of the housing is fixed.
  • a component switchable or disconnectable type is intended to a valve drive part as a roller tappet, a bucket tappet or a support element.
  • this component may also be applied as a switching part in a lever-like cam follower.
  • the components are, for example, deep-drawn, wherein necessary recesses can be punched.
  • the sheet metal components may also consist of thin-walled pipe parts.
  • a particular advantage of the invention is also that it is possible to dispense with an anti-rotation lock from inner element to housing, so that reduced production costs can be expected here.
  • annular space for supplying servo means (preferably hydraulic means) is created in front of lecturstirnen the preferred two coupling slide for their displacement in Entkoppeleuros in a simple manner.
  • the housing preferably has a plurality of circumferentially distributed passages for the servo means (hydraulic means), so that it can be dispensed with its directed installation in the corresponding surrounding construction.
  • the servo means hydraulic means
  • An at least largely “smooth" contact surface can also be created by attaching a separate insert to the inner jacket of the respective tube-like section, the section of which bears against the inner jacket of the housing, at the bore of which the coupling pistons are guided with their outer forks in the decoupling case.
  • Another subclaim relates to a specification of the component. Accordingly, this should be designed as a support element with hydraulic clearance compensation, which may be waived if necessary on the hydraulic play compensation function.
  • the necessary return spring for the decoupling case (lost-motion spring) encloses an outer jacket of the component and rests with its one end on a radially inwardly directed collar of the housing. With its other end, it acts against an outgoing from the outer shell of the inner element in the region of the head stop plates.
  • stop member may protrude integrally from the inner member, it is more appropriate here to apply a separate thin-walled sheet metal part, which rests with its upper bore portion on a stop element such as a locking ring on the outer surface of the inner element.
  • the housing is open on the bottom side. Thus, it can be easier to produce.
  • On the other hand is another post in Towards reduced mass.
  • the floor has at least one crown-like recess, which serves as a vent opening. This prevents an air cushion from building up during a decoupling movement of the inner element directed towards the floor.
  • the inner member may be provided on its outer shell with a securing element such as a polygon ring which rests against a bottom of the inwardly directed collar of the housing in case of attack.
  • the component 1 has a hollow cylindrical, thin-walled housing 2 made of sheet metal.
  • the housing 2 extends axially movable relative to this an inner element 3. This dominates with his head 44, the housing 2.
  • On the head 44 can be stored at one end a cam-operated rocker arm.
  • the latter has a diametrically opposed coupling slide 6.
  • These latter have generally cylindrical geometry and have, starting from the outer bulges 20, partially flattened coupling regions 31 on their undersides. Radially outwardly the coupling slide 6 are acted upon by the force of a voltage applied to the inner end stops 18 Zustellstoffs 7. As a delivery 7 a helical compression spring is provided. Radially inward, i. in Entkoppelcardi, the coupling slide 6 are acted upon by a return means 5. This is designed as a hydraulic medium.
  • the lower tubular portion 13 is partially with its outer shell 15 to the inner shell 17 of the housing 2 firmly.
  • the lower tubular portion 13 merges into a radially inwardly directed offset 23. This is continued radially inward in a second, spaced from the housing portion 25.
  • the latter has at its (lower) annular end 11 a driving surface 9 for the coupling region 31 of the coupling slide.
  • the section 22 merges into a radially inwardly directed crank 24 which is continued radially inward in a second section 26 axially spaced from the housing 2.
  • the second section 26 has an (upper) annular end 12.
  • FIG. 1 reveals a coupling state of the component 1.
  • the coupling slide 6 with pressure off hydraulic means (return means 5) via the force of their Zustellstoffs 7 radially expanded so that their underlying coupling portions 31 are partially on the annular cam surface 9 of the lower tubular portion 13.
  • the inner element 3 is decoupled from the housing 2, so that ultimately the corresponding gas exchange valve remains closed, the pressure is increased to hydraulic fluid in the annular space 19 at Nockengrund réelle belauf so far that the coupling slide 6 are displaced against the force of their Zustellstoffs 7 in its transverse bore 4. With cam start thus the inner element 3 is displaced into the housing 2 (see FIG. 3 ). In this case slide the coupling slide 6 with its outer forehead 32 on an inner side 34 of the lower tubular portion 13. As well FIG. 3 shows, the aforementioned lower portion 13 may also be formed as a relatively thick-walled cylinder part o. The like.
  • the housing 2 is in its upper region in a radially inwardly directed collar 38, which is continued radially inward in a guide portion 43 which extends directly on the outer casing 27 of the inner member 3.
  • a thin-walled stop plate 45 Located in the region of a head 44 of the inner member 3 extends on the outer shell 27 of the inner member 3, a thin-walled stop plate 45.
  • a return spring 10 lost motion spring
  • the upper tubular portion 14 thus includes a further annular space 40 for separately introduced hydraulic means, from which annular space 40 the hydraulic fluid is directed in a manner not to be described in more detail to the lash adjuster 41.
  • the housing 2 is provided with an open bottom 46.
  • a lower annular end 48 of the housing 2 has at least one vent opening 47, which is present here as a crown-like material recess.
  • a stop member 49 which is formed here as a polygon ring. This stop element 49 limits an extension movement of the inner element 3 out of the housing 2. In the installation case, it may be inoperative.
  • FIG. 5 it is according to FIG. 5 provided on the outer casing 27 of the inner member 3 to apply two superimposed locking rings 51.
  • the inner element 3 thus strikes, over an upper side of the upper locking ring 51, in the Ausfahrfall to an underside of the crank 23 of the lower tubular portion 13 at.
  • About variable thickness reserved lower retaining rings 51 can be set in a conventional manner, a coupling play.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Claims (14)

  1. Composant commutable (1) réalisé sous forme de suiveur de came ou d'élément de support pour un suiveur de came d'une commande de soupape d'un moteur à combustion interne, comprenant un boîtier cylindrique creux (2), qui est enfiché de manière télescopique avec un élément interne (3) déplaçable axialement par rapport à celui-ci, un alésage transversal (4) tel qu'un alésage radial avec au moins un coulisseau d'accouplement (6) s'étendant à travers lui en cas de découplage et sollicité par un moyen de rappel (5) étant inhérent audit élément interne (3), le coulisseau d'accouplement (6) pouvant être déplacé en cas de couplage par le biais d'un moyen d'avance (7) par sections dans un évidement (8) du boîtier (2) avec une surface d'entraînement (9), et entre le boîtier (2) et l'élément interne (3) agissant un ressort de rappel (10), caractérisé en ce que l'évidement (8) du boîtier (2) est formé par deux faces avant annulaires (11, 12) axialement opposées, sur l'une desquelles est formée la surface d'entraînement (9), chaque face avant annulaire (11, 12) étant un constituant d'extrémité d'une section séparée (13, 14), à parois minces et tubulaire, qui s'étend fixement à chaque fois avec son enveloppe extérieure (15, 16) en partie sur une enveloppe intérieure (17) du boîtier (2).
  2. Composant selon la revendication 1, caractérisé en ce que le boîtier (2) conjointement avec toutes les sections tubulaires (13, 14) ou au moins avec l'une d'entre elles est réalisé à base de tôle d'acier à paroi mince.
  3. Composant selon la revendication 1, caractérisé en ce que les sections tubulaires (13, 14) sont fixées, soit par le biais d'un ajustement serré soit par le biais d'une liaison soudée ou brasée sur leur enveloppe extérieure (15, 16), à l'enveloppe intérieure (17) du boîtier (2).
  4. Composant selon la revendication 1, caractérisé en ce qu'en tant que moyen d'avance (7) pour l'au moins un coulisseau d'accouplement (6), au moins un ressort de compression à boudin venant en prise sur sa face frontale intérieure (18) est appliqué et un moyen d'asservissement comme un moyen hydraulique est utilisé comme moyen de rappel (5).
  5. Composant selon la revendication 4, caractérisé en ce que le moyen de rappel (5) peut être guidé dans un espace annulaire (19) devant une face frontale extérieure (20) du coulisseau d'accouplement correspondant (6), les sections tubulaires (13, 14) ayant à chaque fois une première section éloignée de l'évidement (21, 22), qui s'applique contre l'enveloppe intérieure (17) du boîtier (2), lesquelles premières sections (21, 22) se prolongent, par le biais d'un coudage respectif (23, 24) orienté radialement vers l'intérieur, par une deuxième section (25, 26) espacée de l'enveloppe intérieure (17) du boîtier (2), lesquelles deuxièmes sections (25, 26) s'étendent à chaque fois sur l'enveloppe extérieure (27) de l'élément interne (3) et sont pourvues du côté de l'extrémité des faces frontales annulaires (11, 12) axialement opposées, l'espace annulaire (19) pour le moyen de rappel (5) étant formé radialement entre les côtés extérieurs (28, 29) des deuxièmes sections espacées (25, 26) et l'enveloppe interne opposée (17) du boîtier (2).
  6. Composant selon la revendication 1, caractérisé en ce que le boîtier (2) a un ou plusieurs passages (30), par le biais duquel ou desquels le moyen de rappel (5) peut être guidé dans l'espace annulaire (19).
  7. Composant selon la revendication 1 ou 5, caractérisé en ce que l'élément interne (3) est solidaire en rotation du boîtier (2).
  8. Composant selon la revendication 1, caractérisé en ce que strictement deux coulisseaux d'accouplement (6) essentiellement cylindriques, diamétralement opposés dans l'alésage transversal (4) de l'élément interne (3) illustré en tant qu'alésage traversant, sont appliqués, dont les régions d'accouplement (31), partant de leurs faces frontales extérieures (32), sont aplaties par sections, un ressort de compression à boudin ou un paquet de ressorts de compression à boudin étant serré(s) entre leurs faces frontales intérieures (18) en tant que moyen d'avance (7).
  9. Composant selon la revendication 5, caractérisé en ce que la section tubulaire (13), qui présente la surface d'entraînement (9), s'applique à plat contre l'enveloppe extérieure (27) de l'élément interne (3) avec son côté intérieur (34) ou avec un côté intérieur (35) d'une pièce d'insertion séparée (36) contre son côté intérieur (35), au moins sur une longueur d'une course relative de l'élément interne (3) par rapport au boîtier (2), dans le cas d'un découplage.
  10. Composant selon la revendication 5, caractérisé en ce que le composant (1) est réalisé sous forme d'élément de support hydraulique commutable, la section tubulaire (14) qui ne présente pas la surface d'entraînement (9) se situant axialement en haut et la section tubulaire (13) présentant la surface d'entraînement (9) se situant axialement en bas, le boîtier (2) pouvant être inséré avec son enveloppe extérieure (37) dans un logement d'une culasse se prolongeant axialement au-dessus de la section supérieure tubulaire (14) par un col (38) orienté radialement vers l'intérieur, à la surface inférieure duquel s'applique la première section (22) de la section supérieure tubulaire (14) avec sa région frontale d'extrémité supérieure (39), de sorte que radialement à l'intérieur de la première section (22) de la section supérieure tubulaire (14) soit formé un espace annulaire (40) pour le moyen de rappel (5) réalisé sous forme de moyen hydraulique en vue de le conduire à un dispositif de compensation de jeu hydraulique (41) de l'élément interne (3), lequel espace annulaire (40) peut être alimenté par le biais d'un ou de plusieurs passages radiaux (42) communiquant les uns avec les autres dans le boîtier (2) et par le biais de la première section (22) de la section supérieure tubulaire (14) et le col (38) du boîtier (2) se prolongeant radialement à l'intérieur par une région de guidage (43) s'appliquant directement contre l'enveloppe extérieure (27) de l'élément interne (3).
  11. Composant selon la revendication 10, caractérisé en ce que le ressort de rappel (10) se présente sous la forme d'au moins un ressort de compression à boudin comprenant en partie le composant (1), lequel ressort de compression à boudin agit à une extrémité contre le col (38) du boîtier (2) et à l'autre extrémité contre un plateau de butée (45) connecté à l'élément interne (3) dans la région de sa tête (44).
  12. Composant selon la revendication 10, caractérisé en ce qu'un fond (46) du boîtier (2) est ouvert du côté de l'extrémité de la section inférieure tubulaire (13), au moins une ouverture de désaérage (47) comme un évidement de matière en forme de couronne s'étendant dans une face frontale annulaire inférieure (48) du boîtier (2).
  13. Composant selon la revendication 10, caractérisé en ce qu'un élément de butée (49), comme une bague polygonale, repose sur l'enveloppe extérieure (27) de l'élément interne (3), dans la région de l'espace annulaire (40) de la section supérieure tubulaire (14), l'élément interne (3), par son application contre le col (38) du boîtier (2), venant en butée par le biais de l'élément de butée (49) contre une butée dans sa "direction de sortie" hors du boîtier (2).
  14. Composant selon la revendication 10, caractérisé en ce qu'une bague de fixation ou un paquet de bagues de fixation (51) est fixé(e) sur l'enveloppe extérieure (27) de l'élément interne (3), à proximité de son fond (50), l'élément interne (3), par son application contre le coudage (23) tourné radialement vers l'intérieur de la section inférieure tubulaire, venant en butée par le biais de la bague de fixation contre une butée dans sa "direction de sortie" hors du boîtier (2).
EP10168445A 2009-07-29 2010-07-05 Composant commutable d'une commande de soupape d'un moteur à combustion interne Not-in-force EP2284366B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009035143A DE102009035143A1 (de) 2009-07-29 2009-07-29 Schaltbares Bauteil eines Ventiltriebs einer Brennkraftmaschine

Publications (2)

Publication Number Publication Date
EP2284366A1 EP2284366A1 (fr) 2011-02-16
EP2284366B1 true EP2284366B1 (fr) 2012-07-04

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Application Number Title Priority Date Filing Date
EP10168445A Not-in-force EP2284366B1 (fr) 2009-07-29 2010-07-05 Composant commutable d'une commande de soupape d'un moteur à combustion interne

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EP (1) EP2284366B1 (fr)
DE (1) DE102009035143A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011079626A1 (de) 2011-07-22 2013-01-24 Schaeffler Technologies AG & Co. KG Schaltbares Ventiltriebsteil
DE102013222830A1 (de) * 2013-11-11 2015-05-13 Schaeffler Technologies Gmbh & Co. Kg Ventilstößel für einen Ventiltrieb einer Brennkraftmaschine
DE102013222829A1 (de) * 2013-11-11 2015-05-13 Schaeffler Technologies Gmbh & Co. Kg Ventilstößel für einen Ventiltrieb einer Brennkraftmaschine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19500575A1 (de) * 1995-01-11 1996-07-18 Schaeffler Waelzlager Kg Schaltbares Abstützelement
US6578535B2 (en) 1999-07-01 2003-06-17 Delphi Technologies, Inc. Valve-deactivating lifter
DE10204672A1 (de) 2002-02-06 2003-08-07 Ina Schaeffler Kg Schaltelement für einen Ventiltrieb einer Brennkraftmaschine
DE102007005302A1 (de) * 2007-02-02 2008-08-07 Schaeffler Kg Schaltbarer Tassenstößel

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EP2284366A1 (fr) 2011-02-16
DE102009035143A1 (de) 2011-02-03

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