EP1088154A1 - Dispositif d'ajustage angulaire relatif d'un arbre a cames - Google Patents

Dispositif d'ajustage angulaire relatif d'un arbre a cames

Info

Publication number
EP1088154A1
EP1088154A1 EP00909182A EP00909182A EP1088154A1 EP 1088154 A1 EP1088154 A1 EP 1088154A1 EP 00909182 A EP00909182 A EP 00909182A EP 00909182 A EP00909182 A EP 00909182A EP 1088154 A1 EP1088154 A1 EP 1088154A1
Authority
EP
European Patent Office
Prior art keywords
impeller
pocket
recess
wing
drive element
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
EP00909182A
Other languages
German (de)
English (en)
Other versions
EP1088154B1 (fr
Inventor
Anton Huber
Wolfgang Speier
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.)
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler 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 DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of EP1088154A1 publication Critical patent/EP1088154A1/fr
Application granted granted Critical
Publication of EP1088154B1 publication Critical patent/EP1088154B1/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
    • 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
    • F01L1/3442—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 hydraulic chambers with variable volume to transmit the rotating force
    • 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
    • F01L1/3442—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 hydraulic chambers with variable volume to transmit the rotating force
    • F01L2001/3445—Details relating to the hydraulic means for changing the angular relationship
    • F01L2001/34483—Phaser return springs
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2101—Cams
    • Y10T74/2102—Adjustable

Definitions

  • the invention relates to a device for the relative angular adjustment of a camshaft according to the kind defined in the preamble of claim 1.
  • a generic device is known from DE 197 26 300 AI.
  • a spring element is arranged between the impeller and the housing wheel, which holds the impeller in a basic position. As a result, the impeller cannot move even when the oil pressure is not present and it is ensured that no more noise occurs when the internal combustion engine is started and that the desired valve timing is also set for the exhaust valve.
  • the housing wheel and the impeller each have recesses in which the spring element is arranged in order to ensure a certain guidance for the same.
  • the recess in the housing wheel due to the wrestle depth of the recess is only insufficient guidance for the spring element and on the other hand, it is extremely expensive to manufacture, the recess in the housing wheel. If the depth of the recess were increased for the guidance of the spring element, these manufacturing difficulties would increase.
  • EP 0 821 138 AI The general prior art relating to devices for the relative angle adjustment of camshafts is further referred to EP 0 821 138 AI, EP 0 801 212 AI, DE 39 07 077 C2, DE 41 08 111 AI, DE 44 02 586 AI , the DE 196 30 403 AI and DE 196 54 926 AI referred.
  • the housing wheel can be produced inexpensively by sintering, which makes a great deal of machining unnecessary. Furthermore, the spring elements can also be easily inserted into the cavity between the impeller and the Housing wheel 'are mounted.
  • Figure 1 shows a device according to the invention in section along the line I-I of Fig. 2.
  • FIG. 2 shows the device according to the invention in section along the line II-II from FIG. 1st
  • the camshaft is provided for actuating exhaust valves, likewise not shown, of an internal combustion engine operating in a known manner, but the device 1 in the form described below can also be used for use with an intake camshaft.
  • the device 1 has a drive element 2, which in this case is designed as a so-called housing wheel 2.
  • the housing wheel 2 is provided on its periphery with a toothing 3, designed in one piece with the housing wheel 2, for a chain (not shown).
  • an impeller 4 which forms the output element and which is not shown with the camshaft in FIG. asked, but connected in a manner known per se.
  • the housing wheel 2 has four inwardly projecting projections 5, a different number of projections 5 being conceivable in other embodiments.
  • the impeller 4 is provided with four outwardly projecting vanes 6, which are each located in recesses or cavities 7 of the housing wheel 2 formed between the individual projections 5. Here, however, the wings 6 do not fill the recesses 7. The impeller 4 can thus perform a slight rotation within the housing wheel 2, which corresponds to the difference between the length of the recesses 7 and the length of the blades 6, each viewed in the U direction.
  • a spring element 8 is arranged between the projections 5 and the wings 6.
  • the spring elements 8 press the vanes 6 to the edge of the projections 5 and thus hold the impeller 4 in its basic position, in which the camshaft realizes "normal" valve timing.
  • the camshaft and thus the impeller 4 always strives to move away from the projections 5, which would result in an adjustment of the valve timing in the direction of a late opening of the exhaust valves.
  • the wings 6 also have pocket-like recesses 10.
  • the spring elements 8, which in this case are designed as compression springs, are thus located in the cavities 7 between the projections 5 and the wings 6.
  • the recesses 10 have a smaller depth than the recesses 9.
  • spring elements 8 can also be provided in a manner not shown.
  • spring elements 8 it is also possible to use spring elements 8 with a different spring characteristic.
  • the pocket-like recesses 9 of the projections 5 are opened in the axial direction in order to make the recesses 9 easier to manufacture and the spring elements 8 to be assembled more easily. In this way, an inexpensive sintering of the housing wheel 2 is possible.
  • the pocket-like recesses 10 can also be opened in the axial direction, as a result of which gives the possibility of also producing the impeller 4 by sintering.
  • a locking device 11 is provided on the housing wheel 2 and on the impeller 4, by means of which the impeller 4 can be locked in its basic position. Since the locking device 11 is of a type known per se, it will not be discussed in more detail below.
  • a so-called central screw 12 is arranged inside the impeller 4 in a manner known per se.
  • a control piston 13 of a likewise known type.
  • the central screw 12 and the control piston 13 together form a 4/2 proportional valve as a control device.
  • various ring channels 14, which are located in the impeller 4 are released and through inlet openings 15 in the impeller 4 or in the central screw 12, oil causes the adjustment of the impeller 4 relative to the Housing wheel 2 in a manner known per se.
  • the existing oil of the internal combustion engine can be used to operate the device 1, i.e. the device 1 can be integrated into the oil circuit of the internal combustion engine.
  • the impeller 4 there are further bores 17, which are shown in dashed lines and emerge from the impeller 4 directly behind the edge on which the vanes 6 rest on the projections 5. If oil is passed through the bores 17, the impeller 4 moves against the force of the spring elements 8 into a different position, as a result of which the camshaft is rotated accordingly and a different valve timing is set.
  • the impeller 4 is adjusted until the correct valve timing is determined by a sensor, not shown. Then the corresponding ring channels 14 and thus the bores 16 and 17 are closed. Medium enclosed in the cavities 7 holds the impeller 4 in the set position. This is a continuous adjustment with an integrated 4/2 proportional valve as stated above. Alternatively, an embodiment without an integrated valve but with an external valve would also be possible.
  • the device 1 has covers 18 and 19 on both sides in the axial direction, which are connected to one another by screws 20.
  • the covers 18 and 19 limit the space in which an oil pressure can be applied.

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)

Abstract

L'invention concerne un dispositif (1) permettant l'ajustage angulaire relatif d'un arbre à cames, notamment d'un arbre à cames prévu pour actionner des soupapes de décharge, par rapport au vilebrequin qui entraîne ledit arbre à cames. Ce dispositif se caractérise en ce qu'il comprend : un élément d'entraînement (2) entraînant le vilebrequin, un élément de sortie (4) déplaçable par rapport à l'élément d'entraînement, prévu pour entraîner l'arbre à cames et un dispositif de commande pour déplacer l'élément d'entraînement par rapport à l'élément de sortie. L'élément de sortie (4) est disposé de manière au moins approximativement concentrique à l'élément d'entraînement. Il est prévu entre l'élément d'entraînement et l'élément de sortie, au moins un élément ressort (8) pour maintenir l'élément de sortie en position normale.
EP00909182A 1999-04-14 2000-02-16 Dispositif d'ajustage angulaire relatif d'un arbre a cames Expired - Lifetime EP1088154B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19916675A DE19916675B4 (de) 1999-04-14 1999-04-14 Vorrichtung zur relativen Winkelverstellung einer Nockenwelle
DE19916675 1999-04-14
PCT/EP2000/001252 WO2000061920A1 (fr) 1999-04-14 2000-02-16 Dispositif d'ajustage angulaire relatif d'un arbre a cames

Publications (2)

Publication Number Publication Date
EP1088154A1 true EP1088154A1 (fr) 2001-04-04
EP1088154B1 EP1088154B1 (fr) 2004-04-07

Family

ID=7904419

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00909182A Expired - Lifetime EP1088154B1 (fr) 1999-04-14 2000-02-16 Dispositif d'ajustage angulaire relatif d'un arbre a cames

Country Status (5)

Country Link
US (1) US6336433B1 (fr)
EP (1) EP1088154B1 (fr)
JP (1) JP2002541380A (fr)
DE (2) DE19916675B4 (fr)
WO (1) WO2000061920A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100474398B1 (ko) * 2000-01-25 2005-03-08 미쓰비시덴키 가부시키가이샤 밸브타이밍 조정장치
US6782856B2 (en) * 2002-04-09 2004-08-31 Ford Global Technologies, Llc Camshaft accumulator
US20040250648A1 (en) * 2003-06-16 2004-12-16 Borgwarner Inc. Method of using compression springs to create a desired torsional load
DE10346448B4 (de) 2003-10-07 2017-03-30 Daimler Ag Nockenwellenversteller für eine Brennkraftmaschine
JP4288220B2 (ja) * 2004-09-17 2009-07-01 株式会社日立製作所 内燃機関のバルブタイミング制御装置
GB2421557B (en) * 2004-12-23 2009-10-28 Mechadyne Plc Vane-type phaser
US7614370B2 (en) * 2006-06-06 2009-11-10 Delphi Technologies, Inc. Vane-type cam phaser having bias spring system to assist intermediate position pin locking
US7252073B1 (en) * 2006-09-08 2007-08-07 Kubota Corporation Engine timer for cold-start advance
WO2009019814A1 (fr) * 2007-08-08 2009-02-12 Mitsubishi Electric Corporation Dispositif d'ajustement du réglage des soupapes, et son procédé d'assemblage
US7721692B2 (en) * 2007-09-06 2010-05-25 Delphi Technologies, Inc. Cam phaser having pre-loaded spring for biasing the rotor through only a portion of its range of authority
DE102010012479A1 (de) * 2010-03-24 2011-09-29 Schaeffler Technologies Gmbh & Co. Kg Steuerventil einer Vorrichtung zur Veränderung der relativen Winkellage einer Nockenwelle gegenüber einer Kurbelwelle einer Brennkraftmaschine
CN107187256A (zh) * 2017-06-23 2017-09-22 何志达 一种新型水杯装置

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Publication number Priority date Publication date Assignee Title
JPS60175738A (ja) 1984-02-21 1985-09-09 Nippon Soken Inc 回転運動伝達装置
DE3907077A1 (de) * 1989-03-04 1990-09-06 Daimler Benz Ag Einrichtung zur relativen winkelverstellung einer nockenwelle von brennkraftmaschinen
DE3922962A1 (de) 1989-07-12 1991-01-17 Audi Ag Antriebsvorrichtung fuer eine nockenwelle einer brennkraftmaschine
DE3930157A1 (de) 1989-09-09 1991-03-21 Bosch Gmbh Robert Einrichtung zur verstellung der drehwinkelzuordnung einer nockenwelle zu ihrem antriebselement
JPH03286104A (ja) * 1990-03-31 1991-12-17 Aisin Seiki Co Ltd 弁開閉時期制御装置
JPH06221120A (ja) * 1993-01-29 1994-08-09 Aisin Seiki Co Ltd 弁開閉時期制御装置
JPH0941917A (ja) * 1995-07-28 1997-02-10 Aisin Seiki Co Ltd 弁開閉時期制御装置
DE19654926C2 (de) * 1996-03-22 1999-10-14 Daimler Chrysler Ag Vorrichtung zur relativen Winkelverstellung einer Nockenwelle
JP3077621B2 (ja) * 1996-04-09 2000-08-14 トヨタ自動車株式会社 内燃機関の可変バルブタイミング機構
US5870983A (en) * 1996-06-21 1999-02-16 Denso Corporation Valve timing regulation apparatus for engine
US5979380A (en) * 1996-07-23 1999-11-09 Aisin Seiki Kabushiki Kaisha Valve timing control device
JP3116858B2 (ja) 1996-11-29 2000-12-11 トヨタ自動車株式会社 内燃機関のバルブタイミング可変機構
JP3164007B2 (ja) * 1997-02-14 2001-05-08 トヨタ自動車株式会社 内燃機関のバルブタイミング調整装置
JP3846605B2 (ja) * 1997-10-30 2006-11-15 アイシン精機株式会社 弁開閉時期制御装置
DE19756015A1 (de) * 1997-12-17 1999-06-24 Porsche Ag Vorrichtung zur hydraulischen Drehwinkelverstellung einer Welle zu einem Antriebsrad

Non-Patent Citations (1)

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Title
See references of WO0061920A1 *

Also Published As

Publication number Publication date
JP2002541380A (ja) 2002-12-03
DE50005967D1 (de) 2004-05-13
US6336433B1 (en) 2002-01-08
DE19916675A1 (de) 2000-11-30
DE19916675B4 (de) 2005-07-07
EP1088154B1 (fr) 2004-04-07
WO2000061920A1 (fr) 2000-10-19

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