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EP1431525B1 - Appareil de contrôle pour soupapes d'un moteur à combustion interne - Google Patents

Appareil de contrôle pour soupapes d'un moteur à combustion interne Download PDF

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Publication number
EP1431525B1
EP1431525B1 EP03104336A EP03104336A EP1431525B1 EP 1431525 B1 EP1431525 B1 EP 1431525B1 EP 03104336 A EP03104336 A EP 03104336A EP 03104336 A EP03104336 A EP 03104336A EP 1431525 B1 EP1431525 B1 EP 1431525B1
Authority
EP
European Patent Office
Prior art keywords
control device
cheeks
carrier
component
rocker arm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP03104336A
Other languages
German (de)
English (en)
Other versions
EP1431525A1 (fr
Inventor
Martin Dr. Lechner
Hermann Hoffmann
Christoph Steinmetz
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.)
Mahle Ventiltrieb GmbH
Original Assignee
Mahle Ventiltrieb GmbH
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 Mahle Ventiltrieb GmbH filed Critical Mahle Ventiltrieb GmbH
Publication of EP1431525A1 publication Critical patent/EP1431525A1/fr
Application granted granted Critical
Publication of EP1431525B1 publication Critical patent/EP1431525B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • 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
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F01L13/0063—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque by modification of cam contact point by displacing an intermediate lever or wedge-shaped intermediate element, e.g. Tourtelot
    • 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
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
    • F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
    • F02D13/0203—Variable control of intake and exhaust valves
    • F02D13/0207—Variable control of intake and exhaust valves changing valve lift or valve lift and timing

Definitions

  • the invention relates to a control device for gas exchange valves of an internal combustion engine according to the preamble of claim 1.
  • Such a device is known from DE 101 00 173 A1.
  • the invention is concerned with the problem of creating a structure of the generic control device in which extremely high functional operational accuracy of the control device can be achieved by simple and rationally manageable manufacturing processes.
  • the invention is based on the general idea that for a combustion engine several scenes, which must form a common, stable component, can be processed as simply and with maximum accuracy for a low-tolerance installation within the control device.
  • the first and second guideways on the scenes must be ground on the common component in a last machining step if the individual scenes cannot be assembled to form a component from already finished individual parts.
  • In a multi-cylinder engine there are component sections between the individual links, with which the links combined to form a common component are mounted so as to be pivotable about an axis.
  • the guideways of a plurality of adjoining scenes cannot be machined with a grinding device which passes over the guideways in succession.
  • a successive grinding of guideways lying one behind the other in the feed direction of a grinding device is achieved in different ways in the embodiments according to the invention in that the construction sections which hinder such a continuous grinding process and lie between the scenes are designed to be retrofittable to a component containing the already ground scenes ,
  • the overall component which contains the individual backdrops and the component sections functioning as a connection to the pivot axis, is assembled from finished individual elements.
  • These individual elements are the backdrops, which can, for example, be sintered or stamped to a finished size, a finished machined carrier, in particular in the form of a Shaft and cheeks for articulation on the swivel axis, the scenes and the cheeks being pushed onto the carrier and each being connected to it by a press fit.
  • the aforementioned individual parts are aligned in relation to one another to form a finished overall component.
  • This control device works with a conventional camshaft 1 as the drive element and a rocker arm 2 as the actuating element of a gas exchange valve 3.
  • the entire control device is arranged on the cylinder head 5 of the internal combustion engine.
  • gas exchange valve 3 is only the area that is directly connected to the rocker arm 2, namely the valve stem 4, drawn together with a valve spring 6.
  • the camshaft 1 serving as the drive element is arranged in the cylinder head 5 via a split bearing block.
  • a cam 8 driven by the camshaft 1 is connected to a transmission element 9 via a cam joint 10.
  • a first roller 11 rotatably mounted on the transmission element 9 forms the contact area of this cam joint 10 there.
  • the transmission element 9 is connected to the rocker arm 2 via a swivel joint 27.
  • This rocker arm 2 is pivotally supported on a support element 13 at its end remote from the valve 3.
  • This support element 13 is mounted in the cylinder head 5 via a bearing element interacting with it and can be combined with a valve lash adjuster or cooperate with one.
  • the transmission element 9 is connected to the cylinder head 5 via a further cam joint having a guideway 15.
  • the contact area of the transmission element 9 on the guideway 15 of the cam joint is designed as a second roller rotatably mounted on the transmission element 9, while the guideway 15 is part of a pivotably mounted link 16 and has a special shape with a first and second guideway section 15 ', 15 " has.
  • the first guideway section 15 ' is designed in the form of a circular arc. This design is such that the center point of the circular guide section 15, with an associated, closed gas exchange valve 3, lies in the axis of the swivel joint 27 of the transmission element 9 and this guide section 15 as part of the link 16 via a link with the swivel joint 27 axis when closed Gas valve 3 coaxially coinciding, in the cylinder head 5 fixed immovable pivot axis 12 is pivotable. Functionally, this means that a closed gas exchange valve 3 remains unchanged in this state by pivoting the link 16 with the first guideway section 15 'in an angle of rotation range within which contact with the transmission element 9 remains within the arc-shaped first guiding section 15.
  • a second guideway section 15 " is provided on the link 16 for generating an actual valve lift.
  • This section 15" is shaped such that when the transmission element 9 engages in this section, the rocker arm 2 swivels and thus a lifting movement of the gas exchange valve 3 is achieved. Due to a specific shape of the second guideway section 15 ′′, depending on the different pivoting position of the link 16, different valve lifts or control characteristics are achieved.
  • the maximum possible displacement positions of the link 16 are alternatively entered by a representation in broken lines for a maximum stroke length of the gas exchange valve in question and in solid lines for a minimum, for example zero stroke.
  • the control device shown in FIG. 1 is intended for a multi-cylinder internal combustion engine and, for this purpose, has a number of baffles 16 which are firmly connected to one another and which depend on the number of cylinders are, wherein a not articulated to the cheeks 18, a shaft as a support 19 of the cheeks 18 or the scenes 16 drive generates the necessary pivoting movements.
  • the link 16 component which in the case of an engine has a plurality of links 16 which are firmly connected to one another, comprises three individual parts joined together to form a single component, namely the links 16, the cheeks 18 and a shaft as Carrier 19 with which the parts 16 and 18 are firmly connected.
  • the nature of this fastening and the production of this component will be discussed in more detail below as the actual core of the present invention.
  • the camshaft 1 with cam 8 as the drive element acts on the transmission element 9 via the cam joint 10, which acts on the guideway 15 of the link 16 via a further cam joint and actuates the gas exchange valve 3 via the rocker arm 2 articulated on this transmission element 9.
  • the valve lift depends on the set position of the guideway 15 in the link 16, wherein a valve lift can only be generated at a position of the link 16 in which the transmission element 9 operates effectively within the second guide track section 15 "of the link 16.
  • a spring can act on the transmission element 9 for spring-loaded contact of the transmission element 9 with the camshaft 1 and the link 16.
  • All position-determining components of the control device namely the bearing block 7 of the camshaft 1, the bearing element 14 of the support element 13 and the links 16 with their guideway sections 15 'and 15 "are connected to the cylinder head 5.
  • the links 16 are combined to form a common, stable component and stored in the cylinder head 5.
  • Figures 2 to 6 show backdrop components according to the invention in differently constructed variants.
  • the link component consists of a shaft as a carrier 19, as well as individual links 16 and cheeks 18 attached to it.
  • the aforementioned parts can be connected to one another in such a chronological order that a common grinding of the guideways 15 of the links 16 by a is possible along the axis of the shaped grinding wheel designed as a carrier 19.
  • a finished shaft is used as the carrier 19, onto which the individual links 16 are slid and shrunk in position.
  • a tube or a profiled component can also be used. It is also possible to use several shafts arranged in parallel.
  • the cheeks 18 are clamped true to size on the shaft 19 via a divisible bearing 20 after the scenes 16 have been ground.
  • divided cheeks 18 are used, which have a first block part 21 and a second Have pivot axis part 22, the two parts 21 and 22 being screwed together.
  • the purpose of this embodiment is that the individual links 16 and the block parts 21 are pushed onto the shaft as a carrier 19 in the order provided for by the motor and can be fastened with this in a press-fit manner in a dimensionally aligned manner by shrinking on.
  • the pivot axis parts 22 of the cheeks 18 can then be screwed onto the aligned block parts 21.
  • the scenes 16 are in turn pushed onto the shaft as a carrier 19 and shrunk firmly onto the latter.
  • the cheeks 18 are screwed to the scenes 16 to which they are laterally attached. The screwing is carried out in such a way that if the screws 23 are not yet firmly tightened, it is possible to align the cheeks 18 with respect to the scenes 16. In the screwed state, the cheeks 18 then have the desired orientation on the scenes 16.
  • the cheeks 18 can have, at the end facing the shaft as a carrier 19, a recess 24 which is complementarily adapted to the shaft, as a result of which the required distance dimension is automatically set in the direction of the link pivot axis.
  • FIG. 6 A particularly expedient type of fastening of the cheeks 18 to the scenes 16 is shown in FIG. 6.
  • the cheeks 18 are formed with a centering section 26 at their respective ends facing the scenery 16.
  • This centering section 26 has a contact surface with respect to the guideway 15 'which is complementary to the latter.
  • the reason for this is that the pivot axis position of the cheek 18 does not change as long as the centering region 26 bears in a form-fitting manner against the circular arc-shaped guide section 15 '.
  • a particularly simple centering when assembling the individual components of the overall backdrop component is possible.
  • the cheeks 18 can be made in one piece and shrunk onto a shaft as a carrier 19 in the same way as the backdrops 16. the cheeks 18 can lie between or next to the scenes 16 without complications.

Landscapes

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

Claims (11)

  1. Dispositif de commande pour soupapes (3) d'un moteur à combustion interne comprenant un mécanisme à plusieurs éléments, comprenant
    - au moins un élément d'entraînement (1),
    - des éléments d'actionnement (2) actionnant chacun au moins une soupape (3),
    - un élément de transmission (9) articulé à chaque fois entre le au moins un élément de commande (1) et un élément d'actionnement (2) agissant sur au moins une soupape (3),
    - un chemin incurvé (15) sur une coulisse (16) pouvant pivoter avec ce chemin incurvé (15) dans une culasse (5),
    - le chemin incurvé (15) étant constitué d'une première et d'une seconde sections de guidage (15', 15"),
    - la première section de chemin de guidage (15') étant configurée en tant que section en arc de cercle avec un centre sur l'axe de pivotement de l'élément d'actionnement (2) en position de fermeture de la soupape (3),
    - la seconde section de chemin de guidage (15") présentant une forme de chemin s'écartant du chemin en arc de cercle de la première section de chemin de guidage (15") et
    - plusieurs coulisses (16) requises pour une pluralité de soupapes (3) étant regroupées, assemblées rigidement entre elles, en un composant à coulisses commun,
    caractérisé par une configuration de ce composant à coulisses commun suivant les caractéristiques suivantes,
    - les coulisses individuelles (16) sont enfilées en tant que pièces détachées préfabriquées sur au moins un support commun (19) et assemblées fixement avec ce dernier,
    - des joues (18) assemblées de façon non monobloc directement avec le support (19), par l'intermédiaire d'une pièce intercalaire (21) ou avec les coulisses (16), sont prévues pour l'articulation sur l'axe de pivotement des coulisses.
  2. Dispositif de commande suivant la revendication 1, caractérisé en ce que l'arbre, le au moins un support (19) et les coulisses (16) fixées à ce dernier sont assemblés à partir de composants finis.
  3. Dispositif de commande suivant la revendication 2, caractérisé en ce que les joues (18) sont enfilées, en tant que pièces détachées monobloc préfabriquées, sur le au moins un support (19) des coulisses (16) et sont assemblées fixement avec ce dernier par un ajustement serré.
  4. Dispositif de commande suivant l'une des revendications 1 et 2, caractérisé en ce que les joues (18) sont assemblées avec un ajustement serré arbre/moyeu avec le support (19) au moyen d'un palier séparable.
  5. Dispositif de commande suivant l'une des revendications 1 et 2, caractérisé en ce que les joues (18) sont partagées chacune en deux composants (21) et (22), dont un premier, configuré en tant que bloc (21), peut être enfilé sur le support (19) et être assemblé avec ce dernier par un ajustement serré, le second composant (22) pouvant être vissé sur le premier composant (21) par l'intermédiaire d'une surface de jonction plane.
  6. Dispositif de commande suivant l'une des revendications 1 et 2, caractérisé en ce que les joues (18) sont partagées chacune en deux composants (21 et 22), dont un premier, configuré en tant que bloc (21), peut être enfilé sur le support (19) et être assemblé avec ce dernier par un ajustement serré, le second composant (22) pouvant être vissé sur le premier composant (21) par l'intermédiaire d'une surface de jonction cylindrique concentrique à l'axe de rotation (12) des coulisses.
  7. Dispositif de commande suivant l'une des revendications 1 et 2, caractérisé en ce que les joues (18) sont partagées chacune en deux composants (21 et 22), dont un premier, configuré en tant que bloc (21), peut être enfilé sur le support (19) et être assemblé avec ce dernier par un ajustement serré, le second composant (22) pouvant être vissé sur le premier par l'intermédiaire d'une surface de jonction correspondant au contour des coulisses.
  8. Dispositif de commande suivant l'une des revendications 1 et 2, caractérisé en ce que les joues (18) sont vissées chacune latéralement sur une coulisse (16), les éléments d'assemblage par vissage permettant un alignement lorsque le vissage n'est pas encore serré fermement par pivotement dans un plan de contact perpendiculaire au support (19), et les positions alignées étant fixées exclusivement par une force de friction de surfaces de contact.
  9. Dispositif de commande suivant la revendication 8, caractérisé en ce que les joues (18) sont centrées chacune radialement par appui sur le support (19).
  10. Dispositif de commande suivant la revendication 8, caractérisé en ce que les joues (18) sont centrées chacune radialement par appui dans la première section de chemin de guidage (15') du chemin de guidage (15) des coulisses.
  11. Dispositif de commande suivant la revendication 2, caractérisé en ce que les coulisses (16) sont des composants préfabriqués, frittés ou découpés aux dimensions finales.
EP03104336A 2002-12-13 2003-11-24 Appareil de contrôle pour soupapes d'un moteur à combustion interne Expired - Lifetime EP1431525B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10258277 2002-12-13
DE10258277A DE10258277A1 (de) 2002-12-13 2002-12-13 Steuereinrichtung für Gaswechselventile eines Verbrennungsmotors

Publications (2)

Publication Number Publication Date
EP1431525A1 EP1431525A1 (fr) 2004-06-23
EP1431525B1 true EP1431525B1 (fr) 2004-12-29

Family

ID=32336283

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03104336A Expired - Lifetime EP1431525B1 (fr) 2002-12-13 2003-11-24 Appareil de contrôle pour soupapes d'un moteur à combustion interne

Country Status (2)

Country Link
EP (1) EP1431525B1 (fr)
DE (2) DE10258277A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004053208A1 (de) * 2004-11-04 2006-07-20 Schaeffler Kg Vollvariable mechanische Ventilsteuerung mit einer Verstellwelle
DE102013106515B3 (de) * 2013-06-21 2014-12-24 Pierburg Gmbh Verfahren zur Herstellung von Ventilgleichhüben an variablen Ventiltrieben
DE102013113815A1 (de) 2013-12-11 2015-06-11 Pierburg Gmbh Übertragungsanordnung für einen mechanisch steuerbaren Ventiltrieb
CN110103577B (zh) * 2019-05-23 2024-04-16 珠海市运泰利自动化设备有限公司 一种自动关阀机构及转印设备

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2335632A1 (de) * 1973-07-13 1975-01-30 Daimler Benz Ag Ventilverstellung fuer brennkraftmaschinen
DE4223173A1 (de) * 1992-07-15 1994-01-20 Bayerische Motoren Werke Ag Ventiltrieb einer Brennkraftmaschine
DE4326331A1 (de) * 1992-07-15 1995-02-09 Bayerische Motoren Werke Ag Ventiltrieb einer Brennkraftmaschine
JP3893202B2 (ja) * 1997-11-07 2007-03-14 株式会社日立製作所 内燃機関の可変動弁装置
DE19825308A1 (de) * 1998-06-05 1999-12-09 Bayerische Motoren Werke Ag Variabler Ventiltrieb für eine Brennkraftmaschine
US6019076A (en) * 1998-08-05 2000-02-01 General Motors Corporation Variable valve timing mechanism
DE19904840A1 (de) * 1999-02-08 2000-08-10 Iav Gmbh Ventiltrieb für Verbrennungsmotoren
US6386161B2 (en) * 2000-01-13 2002-05-14 Delphi Technologies, Inc. Cam link variable valve mechanism
DE10100173A1 (de) * 2001-01-04 2002-07-11 Fev Motorentech Gmbh Vollvariabler mechanischer Ventiltrieb für eine Kolbenbrennkraftmaschine
DE10119686B4 (de) * 2001-04-20 2006-03-30 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Variabler Ventiltrieb
DE10155007A1 (de) * 2001-11-06 2003-05-15 Herbert Naumann Hubventilsteuerung
DE10206465A1 (de) * 2002-02-16 2003-08-28 Mahle Ventiltrieb Gmbh Steuereinrichtung für Gaswechselventile eines Verbrennungsmotors

Also Published As

Publication number Publication date
DE50300227D1 (de) 2005-02-03
DE10258277A1 (de) 2004-06-24
EP1431525A1 (fr) 2004-06-23

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