EP0863297B1 - Dispositif de réglage de l'angle de calage des arbres à cames d'admission et d'échappement d'un moteur à combustion interne - Google Patents

Dispositif de réglage de l'angle de calage des arbres à cames d'admission et d'échappement d'un moteur à combustion interne Download PDF

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Publication number
EP0863297B1
EP0863297B1 EP98101111A EP98101111A EP0863297B1 EP 0863297 B1 EP0863297 B1 EP 0863297B1 EP 98101111 A EP98101111 A EP 98101111A EP 98101111 A EP98101111 A EP 98101111A EP 0863297 B1 EP0863297 B1 EP 0863297B1
Authority
EP
European Patent Office
Prior art keywords
camshaft
adjusting
engine
angle
outlet
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
EP98101111A
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German (de)
English (en)
Other versions
EP0863297A1 (fr
Inventor
Hermann Dobler
Kurt Dusl
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
Original Assignee
Bayerische Motoren Werke AG
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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP0863297A1 publication Critical patent/EP0863297A1/fr
Application granted granted Critical
Publication of EP0863297B1 publication Critical patent/EP0863297B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/34403—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using helically teethed sleeve or gear moving axially between crankshaft and camshaft
    • F01L1/34406—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using helically teethed sleeve or gear moving axially between crankshaft and camshaft the helically teethed sleeve being located in the camshaft driving pulley

Definitions

  • the invention relates to a rotation angle adjustment system for separate inlet and exhaust camshafts of an internal combustion engine according to that in the preamble of claim 1 type described.
  • a generic rotation angle adjustment system is implemented on a series engine, the known adjustment system in principle on the subject of European patent EP 0 416 463 B is based, for the intake camshaft an adjustment device proposed in European patent EP 0 245 791 B. an adjustment device is used and for the exhaust camshaft according to the European patent EP 0 500 540 B.
  • the latter adjustment device is combined with a radial piston pump to supply both Adjustment devices, the radial piston pump serving as a high pressure pump from a consumer of the lubrication system of the internal combustion engine Lubricating oil is supplied as a pressure medium.
  • Both of the aforementioned adjustment devices comprise shaft-side ones Adjustment arrangements with multi-toothed, structurally identical coupling links between the respective camshaft and the associated drive wheel, an angular displacement of an axial displacement of the coupling member is achieved between the drive wheel and the camshaft.
  • the invention has for its object a generic rotation angle adjustment system to be trained for a low-pressure operation with a simple structure.
  • the advantage of the invention is in particular the avoidance of complex hydraulic high-pressure elements to see for the angle adjustment system.
  • the structure of the angle of rotation adjustment system further simplified in that in addition to the structurally identical coupling members also design similar multi-way solenoid valves are used, whereby such an existing system pressure in a de-energized state control that in the intake camshaft its "late position” and in the exhaust camshaft whose "early position” ensured by a preloaded compression spring is supported.
  • a rotation angle adjustment system 1 for an intake camshaft 2 and a separate one Exhaust camshaft 3 of an internal combustion engine 4, not shown includes separate devices 5, 6 for the relative rotation angle adjustment of the respective camshafts 2, 3 to a respective drive wheel 7, 8.
  • Each device 5, 6 has a provided on a housing cover 9 of a machine housing hydraulic actuation arrangement 10, 11 on to control / regulated axial displacement of a multi-toothed coupling member 12, 12 'between Drive wheel 7 or 8 and camshaft 2 or 3 arranged on a shaft side Adjustment arrangement 13 or 14.
  • To simplify the structure of the rotation angle adjustment system 1 are the coupling links 12, 12 'of the separate adjustment arrangements 13, 14 constructed identically with respect to the axes of rotation of the Camshafts 2, 3 rectified slopes of the gears.
  • the hydraulic actuation arrangements are simple for a low-pressure operation 10 and 11 are independent of each other with one not shown lubrication system of the internal combustion engine 4 arranged in parallel Lubricating oil supply 17 in a medium-carrying connection, one on the delivery side System pressure selected close to the pump essentially unrestricted from each other independent, stepless regulation of the respective angle of rotation of the Inlet camshaft 2 and exhaust camshaft 3 in relation to each other a driving crankshaft of the internal combustion engine 4, not shown serves.
  • the simple construction according to the invention of the rotation angle adjustment system 1 is further promoted in that the "early-pitch" device associated with the exhaust camshaft 3 16 is designed as a prestressed spring 18, which is designed as a compression spring for the sake of a simple arrangement.
  • the actuation arrangements comprise 10, 11 in the common housing cover 9 accordingly the distance between the intake and exhaust camshafts 2, 3 arranged Chambers 19, 20 for receiving adjusting pistons hydraulically loaded on both sides 15, 21 for actuating the preferably designed as an axial needle bearing Joints 22 connected coupling members 12, 12 '.
  • the axial needle bearing designed joints 22 are component tolerances in an advantageously simple manner of the chambers 19, 20 balanced relative to the axes of rotation of the camshafts 2 and 3.
  • the Actuating arrangements 10, 11 on the housing cover 9 with the chamber opening on the chamber side Control channels 23, 24 and 23 ', 24' connected receptacles 25, 26 for the same type 4- / 3-way solenoid valves 27, 28 assigned in the de-energized state the switching magnet on the intake camshaft side supports the "late position” Actuation of the adjusting piston 15 and the exhaust cam side one "Early position” spring 18 supports the other adjusting piston in a supporting manner 21 effect.
  • lubricating oil supply 17 of the rotation angle adjustment system 1 on the one hand with the lubrication system of the internal combustion engine 4 downstream adjacent to an oil filter and on the other hand with one for both Solenoid valves 27, 28 common distribution channel 29 in the housing cover 9, wherein for the rapid return of lubricating oil into the lubricating oil sump of the internal combustion engine 4 a lubricating oil return channel assigned to each solenoid valve 27, 28 30, 31 opens freely into a drive shaft 32 of the two camshafts 2, 3.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)

Claims (4)

  1. Dispositif de réglage de l'angle de calage d'un arbre à cames d'admission et d'un arbre à cames d'échappement, particuliers d'un moteur thermique,
    comportant des dispositifs particuliers (5, 6) pour le réglage relatif de l'angle de calage de chaque arbre à cames (2, 3) par rapport aux pignons respectifs (7, 8),
    chaque dispositif (5, 6) ayant un dispositif d'actionnement hydraulique (10, 11) prévu sur le corps (9) du moteur pour le déplacement axial commandé/régulé d'un élément de couplage (12, 12') à dentures multiples entre le pignon d'entraínement (7, 8) et l'arbre à cames (2, 3) d'un dispositif de réglage (13, 14) prévu du côté de l'arbre, et dont
    en outre des éléments de couplage (12, 12') des dispositifs de réglage particuliers (13, 13') sont de même construction et en outre pour des dispositifs d'actionnement (10, 11) non actifs, en fonction de la vitesse de rotation sur l'arbre à cames d'admission (2) on a un « réglage en retard » et sur l'arbre à cames d'échappement (3) une installation (16) produit un « réglage en avance »,
    caractérisé en ce que
    les dispositifs d'actionnement hydrauliques (10, 11) sont indépendamment l'un de l'autre en liaison de passage de fluide avec un dispositif d'alimentation en huile (17) parallèle au système de graissage du moteur thermique (4), et
    une pression du système, choisie à proximité de la pompe du côté alimentation, sert aux régulations continues, essentiellement non étranglées, indépendantes, pour les positions d'angle de rotation respectives de l'arbre à cames d'admission (2) et de l'arbre à cames d'échappement (3) en relation respective par rapport au vilebrequin du moteur thermique (4), et
    l'installation (16) de « réglage en avance » associée à l'arbre à cames d'échappement (3) est en forme de ressort précontraint (18).
  2. Dispositif de réglage de l'angle de calage selon la revendication 1,
    caractérisé en ce que
    les dispositifs d'actionnement (10, 11) comprennent dans une culasse commune (9), en fonction de la distance entre l'arbre à cames d'admission et l'arbre à cames d'échappement (2, 3), des chambres (19, 20) pour recevoir des pistons d'actionnement (15, 21) hydrauliques à double effet, pour actionner des éléments de couplage (12, 12') reliés par une articulation (22),
    aux dispositifs d'actionnement (10, 11) on associe sur la culasse (9) des logements (25, 26) pour des électrovannes à 4/3 voies (27, 28) de même construction, reliés à des canaux de commande (23, 24 ; 23', 24') débouchant du côté des chambres, et
    à l'état non alimenté pour les électro-aimants, les électro-vannes assurent du côté de l'arbre à cames d'admission, une sollicitation du piston d'actionnement (15) soutenant le « réglage en retard », et du côté de l'arbre à came d'échappement, une sollicitation sur l'autre piston d'actionnement (21) soutenant le ressort (18) de « réglage en avance ».
  3. Dispositif de réglage de l'angle de calage selon l'une quelconque des revendications 1 et 2,
    caractérisé en ce que
    l'alimentation en huile de graissage (17) est reliée d'une part au système de graissage du moteur thermique (4) en aval au voisinage d'un filtre à huile, et
    d'autre part à un canal de répartition (29), commun aux deux électrovannes (27, 28) dans la culasse (9), et
    un canal de retour d'huile de graissage (30, 31) associé à chaque électrovanne (27, 28) débouche librement dans un sas d'entraínement (32) des deux arbres à cames (2, 3).
  4. Dispositif de réglage de l'angle de calage selon l'une quelconque des revendications 1 à 3,
    caractérisé en ce que
    pour un moteur thermique (4) monté en position inclinée, le dispositif d'actionnement (10) le plus haut de l'arbre à cames d'admission (2) comporte un canal de commande (23) débouchant dans la zone la plus haute de la chambre (19) du côté du piston d'actionnement (15) agissant dans le sens du « réglage en retard », et
    l'huile de graissage du canal de distribution (29) pour les électrovannes sans courant (27, 28) du dispositif d'actionnement (11) le plus bas de l'arbre à cames d'échappement (3) arrive dans la partie de la chambre (20) recevant le ressort du « réglage en avance » (18).
EP98101111A 1997-03-03 1998-01-23 Dispositif de réglage de l'angle de calage des arbres à cames d'admission et d'échappement d'un moteur à combustion interne Expired - Lifetime EP0863297B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19708485 1997-03-03
DE19708485A DE19708485A1 (de) 1997-03-03 1997-03-03 Drehwinkel-Verstellsystem für gesonderte Einlaß- und Auslaß-Nockenwellen einer Brennkraftmaschine

Publications (2)

Publication Number Publication Date
EP0863297A1 EP0863297A1 (fr) 1998-09-09
EP0863297B1 true EP0863297B1 (fr) 2001-11-14

Family

ID=7822018

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98101111A Expired - Lifetime EP0863297B1 (fr) 1997-03-03 1998-01-23 Dispositif de réglage de l'angle de calage des arbres à cames d'admission et d'échappement d'un moteur à combustion interne

Country Status (2)

Country Link
EP (1) EP0863297B1 (fr)
DE (2) DE19708485A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2329675A (en) * 1997-09-27 1999-03-31 Mechadyne Ltd I.c. engine front cover with oil supply passages
DE19830426A1 (de) * 1998-07-08 2000-01-13 Schaeffler Waelzlager Ohg Steuertrieb für einen in einen Zylinderkopf einer Brennkraftmaschine eingebauten Ventiltrieb
JP4040779B2 (ja) * 1998-12-25 2008-01-30 ヤマハ発動機株式会社 エンジンのバルブタイミング制御装置およびバルブタイミング制御方法
JP2001073718A (ja) 1999-09-03 2001-03-21 Yamaha Motor Co Ltd エンジンの動弁装置
DE19943833A1 (de) 1999-09-13 2001-03-15 Volkswagen Ag Brennkraftmaschine mit hydraulischem Nockenwellenversteller zur Nockenwellenverstellung
DE102008036895A1 (de) 2008-08-07 2010-02-11 Bayerische Motoren Werke Aktiengesellschaft Einrichtung zur Drehwinkelverstellung von Nockenwellen einer Kraftfahrzeug-Brennkraftmaschine
DE102008064522A1 (de) 2008-12-18 2010-07-01 Dr.Ing.H.C.F.Porsche Aktiengesellschaft Brennkraftmaschine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3616234A1 (de) 1986-05-14 1987-11-19 Bayerische Motoren Werke Ag Vorrichtung zur relativen drehlagenaenderung zweier in antriebsverbindung stehender wellen, insbesondere zwischen in einem maschinengehaeuse einer brennkraftmaschine gelagerten kurbelwelle und nockenwelle
DE3929621A1 (de) 1989-09-06 1991-03-07 Bayerische Motoren Werke Ag Vorrichtung zur relativen drehwinkelverstellung einer welle zu einem antriebsrad, insbesondere nockenwelle einer brennkraftmaschine
DE3929623A1 (de) 1989-09-06 1991-03-07 Bayerische Motoren Werke Ag Brennkraftmaschine mit nockenwellen und einer drehwinkelverstell-vorrichtung
DE4120664A1 (de) * 1991-02-20 1992-12-24 Teves Gmbh Alfred Hydraulikanlage
JPH0874541A (ja) * 1994-08-31 1996-03-19 Yamaha Motor Co Ltd ４サイクルエンジン
JP3189679B2 (ja) * 1996-05-24 2001-07-16 トヨタ自動車株式会社 内燃機関のバルブ特性制御装置

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Publication number Publication date
DE19708485A1 (de) 1998-09-10
EP0863297A1 (fr) 1998-09-09
DE59802113D1 (de) 2001-12-20

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