EP1605141A2 - Déphaseur d'arbre à cames à palettes - Google Patents

Déphaseur d'arbre à cames à palettes Download PDF

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Publication number
EP1605141A2
EP1605141A2 EP05010197A EP05010197A EP1605141A2 EP 1605141 A2 EP1605141 A2 EP 1605141A2 EP 05010197 A EP05010197 A EP 05010197A EP 05010197 A EP05010197 A EP 05010197A EP 1605141 A2 EP1605141 A2 EP 1605141A2
Authority
EP
European Patent Office
Prior art keywords
groove
vane
circular arc
radius
camshaft adjuster
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
EP05010197A
Other languages
German (de)
English (en)
Other versions
EP1605141B1 (fr
EP1605141A3 (fr
Inventor
Mike Kohrs
Hermann Golbach
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
INA Schaeffler KG
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=34936377&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1605141(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by INA Schaeffler KG, Schaeffler KG filed Critical INA Schaeffler KG
Publication of EP1605141A2 publication Critical patent/EP1605141A2/fr
Publication of EP1605141A3 publication Critical patent/EP1605141A3/fr
Application granted granted Critical
Publication of EP1605141B1 publication Critical patent/EP1605141B1/fr
Active legal-status Critical Current
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D47/00—Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D47/00—Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts
    • B23D47/04—Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts of devices for feeding, positioning, clamping, or rotating work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D47/00—Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts
    • B23D47/08—Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts of devices for bringing the circular saw blade to the workpiece or removing same therefrom
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
    • B23D61/02—Circular saw blades
    • 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 vane-type camshaft adjuster with a stator, a connectable with a camshaft rotor having a plurality of radially projecting Wings inserted in wing grooves, with a wing groove Nutrich lake, a groove bottom and the Nutsecurity lake undercutting, rounded transition areas between the groove side surfaces and the Has groove base.
  • Camshaft adjusters are used to control the opening times or closing the valves to change.
  • the fixed angular relationship between the camshaft and the crankshaft driving it is thereby canceled and the timing can vary depending on the speed and more Parameters are set optimally.
  • Enable camshaft adjuster a relative rotation of the camshaft to the crankshaft.
  • Known vane-type camshaft adjusters have a rotor with several radially projecting wings on, by the force of a spring radially to pressed against a stator housing outside. There are several on the stator formed radially inwardly projecting stops that the adjusting movement of the rotor in both directions when the wings are against the attacks are running.
  • the wings are with their front edges on the stator, so that between each one wing side and the adjacent side of a stop the stator is formed into a chamber, into which a fluid, as a rule the engine oil, promoted via a valve associated with the camshaft adjuster becomes.
  • the stator serves on the one hand for separating and sealing the fluid chambers, on the other hand, to set the adjustment angle between the camshaft and the crankshaft.
  • the introduced into the rotor torque is supported by the inserted in grooves Wings on the stator and hydraulically on the oil cushion in the stator chambers from.
  • the force acting on the wings causes reaction forces in the groove of the rotor.
  • a force acts on the groove edge on the rotor outer diameter, the associated reaction force acts on the opposite Groove side in groove bottom.
  • These forces cause a combined tension and bending stress in the two transitions of the groove side surface to the Groove base.
  • the transition range is conventional Vane-shaped camshaft adjusters rounded, so that he Undercut groove side surface.
  • there are still significant tensions in the corner area which at the usual operating loads for the used Materials can be critical.
  • the invention is therefore based on the object, a vane-camshaft adjuster indicate that lower voltages occur.
  • the groove bottom is not flat, but the corner areas are as the groove bottom designed undercutting circular arc sections. Only the middle area the Nutgroundes is flat because there is a spring supported.
  • the inventive Solution has the advantage that only low production engineering Changes are required. Due to the optimized cross section the wing groove can withstand the stress especially in the transition region be reduced, so that dispensed with higher quality materials which can result in cost savings.
  • the Distance of the lower end of the groove side surface from the groove bottom to the groove width in a ratio of 0.4 to 0.55, in particular approximately 0.48.
  • the radius of the circular arc sections 0.5 times to 0.6 times the distance of the lower end of the groove side surface of the groove bottom is.
  • the radius may be 0.56 times the distance be.
  • the horizontal distance of the center of a circular arc portion from the symmetry line of the groove 0.3 times to 0.4 times the groove width is particularly preferred.
  • the vertical distance of the center of the circular arc portion to the groove bottom 0.90 times to 0.99 times the radius of the circular arc section.
  • Particularly preferred is the value 0.95.
  • the specified geometric Values and parameters are not rigid limits, they can be varied if this results in the desired voltage reduction.
  • the vane-type camshaft adjuster can be achieve a further optimization of the occurring stresses, if a Grooved side surface has a relief notch.
  • Geometric optimization is not on the rounded transition area limited, since the groove side surface also optimized Form has.
  • the power flow is based on the upper groove edge in the direction of the rotor center in a wide arc gently deflected, so that no high stress concentration in the groove bottom arises. The occurring forces and stresses are caused by the relief notch distributed more evenly, so that the material stress is reduced.
  • the relief groove of the nutground paragraphen End of the groove side surface is spaced.
  • the wing is thus at the top, outer end of the groove, further, the wing is located between the relief notch and the rounded area near the bottom of the groove the Nutrich lake so that it is guided in the groove.
  • a particularly effective voltage reduction can be achieved when the Relief groove of the vane-type camshaft adjuster according to the invention at least partially formed as a circular arc section.
  • a circular arc section is dispensed with corners leading to a Can cause voltage increase.
  • the radius of the circular arc section in Region of Nutgrunds is selected such that it tangentially into the circular arc section the relief score opens. Accordingly, by the boundary of both circular arc sections are placed an envelope, the has a certain radius.
  • Optimal tension conditions can be achieved if the radius of the Circular arc section in the area of the relief score 0.75 times to 0.85 times the groove height. Particularly preferred is a value of 0.81.
  • the Radius of the circular arc section in the region of the groove base about 0.20 times to 0.28 times the radius of the arc section in the range of Discharge notch. Particularly preferred is a value of 0.24.
  • Fig. 1 shows a conventional vane-type camshaft adjuster 1 comprising a stator 2 and a rotor 3 having a plurality of vane grooves 4 used Wings 5.
  • the stator 2 is part of a chain or belt drive, whereby the rotation of the Crankshaft via a chain or a belt over the stator 2 and the rotor 3 is transmitted to a camshaft.
  • the stator 2 has projections 6 on, which serve as stops for the wings 5.
  • Fig. 1 is the wing 5 in an end position.
  • In the rotor 3 are on the left and the right Side each shegelnut 4 holes, through which a fluid in a chamber next to the wing 5 can flow in or out.
  • Fig. 2 shows an enlarged detail of Fig. 1 in the region of the wing groove 4th
  • the force acting on the wing 5 calls a reaction force 9 at the outer end the Nutrich Chemistry 10 forth.
  • another reaction force 11 caused on the opposite groove side surface 12.
  • the forces 9, 11 cause a combined tensile and bending stress in the field of Transitions of the groove side surfaces 10, 12 towards the groove bottom 13.
  • Fig. 3 shows the Fluginut a camshaft adjuster according to the first Embodiment of the invention.
  • FIG. 3 The contour of the conventional vane groove according to FIG. 2 is shown in FIG. 3 for comparison shown in dashed lines.
  • the distance of the lower end the groove side surface 15, 16 of the groove bottom 17 and the width of the wing groove 14 in a ratio of about 0.48 to each other.
  • the radius of the circular arc sections 18, 19 is 0.56 times the distance of the lower end of the Nut side surfaces 15, 16 of the groove bottom 17.
  • the horizontal distance of the center point of the circular arc portion 18, 19 from the symmetry line of the wing groove 14 is 0.35 times the width of the wing groove 14.
  • the vertical distance the center of the circular arc sections 18, 19 to the groove bottom 17 is the 0.95 times the radius of the circular arc sections 18, 19.
  • Fig. 4 shows the vane groove of a camshaft adjuster according to a second Embodiment of the invention.
  • the wing groove in the region of the groove side surfaces 26, 27 relief notches 28, 29.
  • the relief scores 28, 29 are of the nutground solution 26, 31 of the Nutrich lake 26, 27 spaced so that a wing in this area to the Nut side surfaces 26, 27 abuts and is guided.
  • the relief notches 28, 29 are at least partially as a circular arc section formed with a radius 32.
  • the nut base end of the relief notch 28, 29, the lower end in Fig. 4 runs approximately perpendicular to Grooved side surface 26, 27.
  • the opposite end, the upper end in Fig. 4 the relief notch 28, 29 extends tangentially to the groove side surface 26, 27th Since the radius 32 of the relief notches 28, 29 at least partially with the Radius of the circular arc sections 33, 34 coincides in the region of the groove bottom 35, the flow of force is starting from the upper edge of the groove in a wide Bow deflected so that in the corner areas, especially near the in Fig. 4 left arc section 33 shows the formation of stress concentrations is avoided.
  • the radius 36 of the circular arc section 33, 34 in the region of the groove bottom 35 is selected such that the arcuate portion 33, 34 tangent in the Arc section of the relief notch 28, 29 opens.
  • the radius 32 of the circular arc section in the region of the relief notch 28, 29 is in the illustrated embodiment 0.81 times the groove height 37.
  • the radius 36 of the circular arc section 33, 34 in the region of the groove bottom 35 is 0.24 times the radius 32 of the circular arc section in FIG Area of the relief notch 28, 29.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
EP05010197.1A 2004-06-08 2005-05-11 Déphaseur d'arbre à cames à palettes Active EP1605141B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004027950 2004-06-08
DE102004027950A DE102004027950A1 (de) 2004-06-08 2004-06-08 Flügelzellen-Nockenwellenversteller

Publications (3)

Publication Number Publication Date
EP1605141A2 true EP1605141A2 (fr) 2005-12-14
EP1605141A3 EP1605141A3 (fr) 2009-04-08
EP1605141B1 EP1605141B1 (fr) 2015-07-08

Family

ID=34936377

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05010197.1A Active EP1605141B1 (fr) 2004-06-08 2005-05-11 Déphaseur d'arbre à cames à palettes

Country Status (5)

Country Link
US (1) US7188596B2 (fr)
EP (1) EP1605141B1 (fr)
KR (1) KR101239494B1 (fr)
CN (1) CN100543277C (fr)
DE (1) DE102004027950A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110410169A (zh) * 2018-04-26 2019-11-05 沃尔沃汽车公司 凸轮轴装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010019530A1 (de) * 2010-05-06 2011-11-10 Schaeffler Technologies Gmbh & Co. Kg Nockenwellenversteller und U-förmiges Dichtelement zum Abdichten einer radialen Fläche eines Flügels eines Nockenwellenverstellers
US9341089B2 (en) 2014-04-04 2016-05-17 RB Distribution, Inc. Camshaft phaser

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA837328B (en) * 1982-10-14 1984-05-30 Pfd Ltd Manufacture of article having undercut internal surface
EP1229216B1 (fr) * 1996-12-12 2004-09-29 Aisin Seiki Kabushiki Kaisha Dispositif de commande de soupape
JP3812697B2 (ja) * 1997-09-29 2006-08-23 アイシン精機株式会社 弁開閉時期制御装置
JP3812137B2 (ja) * 1998-04-28 2006-08-23 アイシン精機株式会社 弁開閉時期制御装置
KR200221575Y1 (ko) * 1998-07-29 2001-09-29 구자홍 전자레인용 할로겐히터 커버
DE19860418B4 (de) * 1998-12-28 2008-09-11 Schaeffler Kg Vorrichtung zum Verändern der Steuerzeiten von Gaswechselventilen einer Brennkraftmaschine, insbesondere Nockenwellen-Verstelleinrichtung mit Flügelrad
JP2001193421A (ja) * 1999-10-25 2001-07-17 Mitsubishi Electric Corp バルブタイミング調整装置
DE10064222B4 (de) * 1999-12-24 2006-02-09 Aisin Seiki K.K., Kariya Verstellbares Ventilsteuersystem
JP2002180809A (ja) * 2000-10-04 2002-06-26 Denso Corp バルブタイミング調整装置の製造方法
JP4595263B2 (ja) 2001-07-31 2010-12-08 アイシン精機株式会社 弁開閉時期制御装置
JP3906763B2 (ja) * 2002-08-28 2007-04-18 アイシン精機株式会社 弁開閉時期制御装置
JP4165749B2 (ja) * 2003-08-04 2008-10-15 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
JP4214972B2 (ja) * 2003-08-28 2009-01-28 アイシン精機株式会社 弁開閉時期制御装置
DE10355502A1 (de) * 2003-11-27 2005-06-23 Ina-Schaeffler Kg Vorrichtung zum Verändern der Steuerzeiten von Gaswechselventilen einer Brennkraftmaschine, insbesondere Rotationskolben-Verstelleinrichtung zur Drehwinkelverstellung einer Nockenwelle gegenüber einer Kurbelwelle
DE102004027951A1 (de) * 2004-06-08 2006-02-16 Ina-Schaeffler Kg Flügelzellen-Nockenwellenversteller

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110410169A (zh) * 2018-04-26 2019-11-05 沃尔沃汽车公司 凸轮轴装置

Also Published As

Publication number Publication date
CN1707072A (zh) 2005-12-14
US20050268874A1 (en) 2005-12-08
KR101239494B1 (ko) 2013-03-05
EP1605141B1 (fr) 2015-07-08
EP1605141A3 (fr) 2009-04-08
CN100543277C (zh) 2009-09-23
US7188596B2 (en) 2007-03-13
DE102004027950A1 (de) 2006-02-16
KR20060048224A (ko) 2006-05-18

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