EP3014079B1 - Arbre à cames réglable - Google Patents

Arbre à cames réglable Download PDF

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Publication number
EP3014079B1
EP3014079B1 EP14733087.2A EP14733087A EP3014079B1 EP 3014079 B1 EP3014079 B1 EP 3014079B1 EP 14733087 A EP14733087 A EP 14733087A EP 3014079 B1 EP3014079 B1 EP 3014079B1
Authority
EP
European Patent Office
Prior art keywords
outer shaft
cam
camshaft
shaft
bearing gap
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
EP14733087.2A
Other languages
German (de)
English (en)
Other versions
EP3014079A1 (fr
Inventor
Bernd Mann
Uwe Dietel
Jürgen MEUSEL
Michael Kunz
Martin Lehmann
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.)
Thyssenkrupp Dynamic Components Teccenter AG
Original Assignee
ThyssenKrupp Presta TecCenter 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 ThyssenKrupp Presta TecCenter AG filed Critical ThyssenKrupp Presta TecCenter AG
Publication of EP3014079A1 publication Critical patent/EP3014079A1/fr
Application granted granted Critical
Publication of EP3014079B1 publication Critical patent/EP3014079B1/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
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • 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
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • F01L2001/0471—Assembled camshafts
    • F01L2001/0473—Composite camshafts, e.g. with cams or cam sleeve being able to move relative to the inner camshaft or a cam adjusting rod
    • 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
    • F01L2810/00—Arrangements solving specific problems in relation with valve gears
    • F01L2810/02—Lubrication

Definitions

  • the present invention relates to a camshaft for the valve train of an internal combustion engine with an outer shaft and with a concentric in the outer shaft and rotatably received in this inner shaft, wherein on the outer surface of the outer shaft at least one cam member is rotatably supported to form a sliding bearing gap, and wherein the cam member is rotationally connected to the inner shaft.
  • Adjustable camshafts for the valve train of an internal combustion engine with an outer shaft on which a cam element is received and which is rotationally connected to an inner shaft which extends through the outer shaft serve for the variable control of the intake valves and exhaust valves of the internal combustion engine.
  • On the outer shaft further cam elements are rotationally fixed, and the phase angle of the inner shaft is adjusted relative to the phase angle of the outer shaft, so also changed the phase angle of the cam elements, which are rotatably mounted on the outer shaft to form a sliding bearing gap, to the phase position of the cam elements, which are arranged rigidly on the outer shaft.
  • the nested waves rotate about a common axis of rotation in the cylinder head of the internal combustion engine and can be adjusted to each other via a control member in their phase position.
  • the cam elements interact with the valves of the internal combustion engine directly or via rocker arms, and on the cam elements act on control forces that must be taken on the sliding bearing gap of the rotatable mounting of the cam elements on the outer shaft. It has been found that when there is a lack of lubricating oil supply of the sliding bearing gap between the inner surface of the cam elements and the outer surface of the outer shaft wear can be the result, which must always be avoided.
  • the post-published patent application DE 10 2012 103 594 A1 shows an adjustable camshaft for the valve train of an internal combustion engine with an outer shaft and a rotatably received in the outer shaft inner shaft.
  • cam elements On the outer surface of the outer shaft cam elements are rotatably mounted to form a sliding bearing gap and connected rotationally fixed by a bolt with the inner shaft.
  • it is proposed to introduce at least one ⁇ lfangbohrung in the cam member, so that by the rotation of the camshaft spray oil from the installation environment of the camshaft through the ⁇ lfangbohrung be performed in the sliding bearing gap between the outer shaft and the cam member can.
  • the oil hole is located in the cam element, resulting in disadvantages in the processing.
  • the introduction of a ⁇ lleitnut in the inner surface of the cam bore of the cam member is expensive, and it has been shown that due to the centrifugal forces during rotation of the camshaft, the lubricating oil remains predominantly in the ⁇ lleitnut, so that it is desirable, the transition of the lubricating oil from the ⁇ lleitnut in to improve the sliding bearing gap.
  • an adjustable camshaft wherein in an outer shaft, a concentrically extending and rotatably received in this inner shaft is arranged. On the outer surface of the outer shaft cam elements are rotatably mounted and rotatably connected by a radial opening in the outer shaft with the inner shaft. An annular gap between the outer shaft and the inner shaft is supplied with lubricating oil by long rings, which feeds a large-sized feed channel 19. Solutions for full lubrication of the annular gap are not shown.
  • the publication GB2431977 discloses a similar adjustable camshaft.
  • the object of the invention is the improved supply of the sliding bearing gap between a cam member and an outer shaft of an adjustable camshaft with lubricating oil, in particular to avoid operating conditions with deficient lubrication of the sliding bearing gap substantially.
  • the invention includes the technical teaching that in the outer surface of the outer shaft at least one ⁇ lleitnut is introduced in a position and with an axial length such that the ⁇ lleitnut is formed at least over the axial width of the sliding bearing gap and at least one side of the cam member from the Sliding bearing gap is led out with a free groove portion.
  • the inventive introduction of at least one ⁇ lleitnut in the outer surface of the outer shaft creates the possibility of oil, referred to in the linguistic usage as lubricating oil, which can enter via the free groove portion in the ⁇ lleitnut to lead over this in the sliding bearing into it, and the lubricating oil passes in an improved manner in the sliding bearing gap between the outer surface of the outer shaft and the inner surface of the cam member.
  • the sliding bearing gap is such that the cam member on the outer surface of the outer shaft can perform a movement in the lower micrometer range by the diameter of the outer shaft is slightly smaller than the diameter of the cam bore in the cam member.
  • the interaction of the cam member with a tapping element for valve actuation produces a periodically changing application of force to the cam element, whereby a constant lifting and lowering of the inner surface of the cam bore on the outer surface of the outer shaft is produced.
  • the micro gap prevailing in the sliding bearing gap is periodically increased and decreased, whereby a pumping action is generated.
  • the ⁇ lleitnuten extend in the extension direction of the camshaft.
  • the ⁇ lleitnut can run straight in the outer surface of the outer shaft, wherein for each setting point on which a cam member is disposed on the outer shaft, one or more ⁇ lleitnuten can be introduced in the direction of extension of the camshaft.
  • the extension direction of the ⁇ lleitnuten runs parallel to the axis of rotation of the adjustable camshaft.
  • the at least one ⁇ lleitnut with an axial extension component and with a circumferentially extending component in the outer surface of the outer shaft spiral. Due to the helical course of the ⁇ lleitnut the entry of lubricating oil over the free groove portion of the ⁇ lleitnut is favored, which protrudes from the sliding bearing gap between the outer shaft and the cam member, wherein the promotion of the Schmieröleintritts is generated in the ⁇ lleitnut by the rotation of the camshaft.
  • a first ⁇ lleitnut is formed with a first spiral rotation direction and at least a second ⁇ lleitnut with one of the first Spiralrehraum oppositely formed second spiral rotation direction.
  • the at least one ⁇ lleitnut be led out on both sides of the cam member from the sliding bearing gap with a respective free groove portion.
  • the ⁇ lleitnut not only forms a lubricating oil reservoir formed in the sliding bearing gap, but the ⁇ lleitnut can be flowed through with lubricating oil by the lubricating oil on a first side of the cam member via a first free groove portion enters the ⁇ lleitnut and on the opposite side of the cam member via another free Nutabites the ⁇ lleitnut can leave again. Parts of the oil flowing through the ⁇ lleitnut lubricating oil can get in particular supported by the pumping action in the sliding bearing gap. As a result, a permanent replacement of the lubricating oil in the sliding bearing gap is achieved with particular advantage.
  • a bolt may be provided which extends transversely through the inner shaft and through at least one bolt hole introduced in the outer shaft.
  • the bolt can be seated with at least one of its ends in the cam member, whereby the rotationally fixed connection between the inner shaft and the cam member is generated.
  • the at least one oil groove may be spaced from the arrangement of the bolt hole in the outer shaft. This avoids that lubricating oil can escape from the ⁇ lleitnut in the bolt opening, also the advantage can be achieved that through the bolt hole also lubricating oil can get into the sliding bearing gap, so supplied by the ⁇ lleitnuten more areas of the sliding bearing gap spaced from the bolt opening additionally with lubricating oil can be.
  • critical i. Highly loaded areas can be supplied by the ⁇ lleitnuten without crossing the at least one bolt hole in the outer shaft.
  • the lubricating oil can not drain through the openings for the bolts.
  • the cam elements may comprise at least one cam collar, wherein the axial width of the sliding bearing gap is determined by the width of the cam collar.
  • the sliding bearing gap thus extends under the actual cam element and under the region of the cam collar, so that the oil guide grooves can also have a corresponding length over the actual cam element and the cam collar.
  • the bolt for connecting the cam member to the inner shaft can thereby be seated in the cam collar, so that the cam member is rotationally connected via the cam collar and the bolt with the inner shaft.
  • the ⁇ lleitnut have a variable over the length of cross-section, in particular such that the ⁇ lleitnut starting tapers from the free groove portion in the sliding bearing gap, for example. Due to larger dimensions in the region of the free groove portion of the entry of lubricating oil is favored in the groove portion, wherein by the inward in the Sliding bearing gap extending into the region of the ⁇ lleitnut the taper of the ⁇ lleitnut favors the escape of the lubricating oil from the ⁇ lleitnut in the sliding bearing gap.
  • a surface structuring is provided, which may in particular be such that the Load capacity of a lubricant film forming between the outer surface of the outer shaft and the inner surface in the cam bore is improved.
  • the surface structuring may be generated by a laser beam machining method, a honing method, an electron beam method or by etching methods in the outer surface of the outer shaft and / or in the inner surface in the cam hole.
  • the surface structuring may include grooves or grooves in the surface, which are formed with respect to the longitudinal extent of the camshaft, for example, axially, circumferentially, spirally or mesh-like.
  • the surface structuring providing micro-lubricating pockets into which the lubricating oil enters and provides a small amount of lubricating oil for passage into the journal bearing gap.
  • An outline of the lubricating film to form a mixed friction is thereby effectively delayed.
  • the inner surface in the cam bore comprise a Wienhonschliff, as this is also known from the cylinder bore of a reciprocating engine.
  • the Wienhonschliff can be applied in the same way on the outer surface of the outer shaft, so that a net-like surface structuring arises.
  • the surface of the camshaft may also be hardened so that the tips of the surface structure in contact with the cam elements are not worn. Furthermore, so the shrinkage of the cam elements on the Outer shaft in the entire setting area or by edge support effects avoided or reduced.
  • FIG. 1 show a first embodiment of an adjustable camshaft 1, wherein in FIG. 1 a section of an outer shaft 10 is shown, and in FIG. 2 is a section of a camshaft 1 with an outer shaft 10 according to FIG. 1 shown.
  • the outer shaft 10 is formed as a hollow shaft, and an inner shaft 11 extends through the outer shaft 10 and is independent of the outer shaft 10 about a common camshaft axis 22 rotatable.
  • the inner shaft 11 is rotatably mounted in the outer shaft 10.
  • a cam member 23 is rigidly received, and the cam member 23 may for example be welded to the outer shaft 10 or fixed to a diameter expansion by means of a press fit.
  • the cam member 23 rotates with the outer shaft 10 in phase.
  • cam member 12 is rotatably received in the region of a setting point 16 on the outer surface 13 of the outer shaft 10 to form a sliding bearing gap.
  • the cam member 12 has a cam collar 12a, and the cam member 12 is rotationally connected by means of a bolt 17 with the inner shaft 11.
  • 10 bolt holes 18 are provided in the outer shaft, which extend over an angular range in the circumferential direction, so that the cam member 12 by a rotation of the inner shaft 11 relative to the phase position of the cam member 23 which is rigidly mounted on the outer shaft 10, can be twisted.
  • valve control times of an internal combustion engine can be adjusted separately from one another, for example, control times for intake valves and exhaust valves.
  • a ⁇ lleitnut 14 which has a spiral shape with an axial extension component in the direction of the camshaft axis 22 and an extension component in the circumferential direction.
  • the width of the setting point 16 in the direction of the camshaft axis 22 is indicated by dashed lines, and the width of the setting point 16 corresponds to the width of the sliding bearing gap between the outer surface 13 of the outer shaft 10 and the cam member 12. It is shown that the ⁇ lleitnut 14 via extends the entire width of the setter 16 away, and with free groove portions 15 extends beyond this, as in FIG. 2 shown.
  • FIGS. 3 and 4 is a further embodiment of a camshaft 1 is shown.
  • FIG. 3 shows a portion of an outer shaft 10 with two ⁇ lleitnuten 14, wherein the outer shaft 10 with the ⁇ lleitnuten 14 in the partial view of the camshaft 1 according to FIG. 4 is also shown.
  • the introduced into the outer surface 13 of the outer shaft 10 ⁇ lleitnuten 14 have a mutually opposite spiral shape, and free groove portions 15 extend laterally beyond the side portion of the cam member 12 on the outer shaft 10.
  • lubricating oil can enter both into the first oil guide groove 14 and into the second oil guide groove 14 via the free groove sections 15, wherein the entry into those free groove sections 15 takes place with respect to the spiral rotation direction in the direction of rotation of the camshaft 1 about the camshaft axis 22.
  • a blade effect is utilized, and lubricating oil can pass through the ⁇ lleitnuten 14.
  • the lubricating oil from the ⁇ lleitnut 14 reach into the sliding bearing gap over the width of the setting point 16 in order to supply the sliding bearing between the cam member 12 and outer shaft 10 with lubricating oil.
  • FIGS. 5 and 6 show in a respective perspective view of another embodiment of ⁇ lleitnuten 14 in the outer surface 13 of the outer shaft 10, and the ⁇ lleitnuten 14 extend in the longitudinal direction of the camshaft 1 parallel to the camshaft axis 22.
  • FIG. 5 shows in a respective perspective view of another embodiment of ⁇ lleitnuten 14 in the outer surface 13 of the outer shaft 10, and the ⁇ lleitnuten 14 extend in the longitudinal direction of the camshaft 1 parallel to the camshaft axis 22.
  • the illustrations show a camshaft 1, as it can be received in the cylinder head of an internal combustion engine via plain bearings.
  • the plain bearings can accommodate the camshaft 1 via the outer shaft 10, wherein the plain bearings can be supplied via oil passages in the stationary bearing shells with lubricating oil.
  • the lubricating oil can emerge laterally at the sliding bearing points, and it can be provided within the meaning of the present invention with further advantage, the sliding bearings relative to the inner shaft 11 rotatably connected cam elements 12 adjacent to arrange, thereby causing the area of the outer surface 13 of the Outer shaft 10, to which the free groove portions 15 protrude, is afflicted with a larger amount of lubricating oil.
  • lubricating oil from the sliding bearings for receiving the camshaft 1 in the cylinder head can be improved by moving the lubricating oil on the outer surface 13 of the outer shaft 10 via the free groove sections 15 into the oil guide grooves 14.
  • FIGS. 7 and 8 show in a cross-sectional view ( FIG. 7 ) and in a schematic perspective view ( FIG. 8
  • the surface structuring 19 may be introduced into the outer surface 13 of the outer shaft 10, but also into the inner surface of the cam bore, for example, by a laser beam machining method, a honing method, an electron beam method, or by etching methods Microcavities 24 are generated. By creating microcavities 24 in the outer surface 13, the adhesion of the lubricating oil to the outer surface 13 is improved, and the lubricating film between the outer surface 13 of the outer shaft 10 and the cam hole in the cam member 12 is stabilized.
  • FIG. 9 shows further forms of a surface structure 20 in the form of grooves, which are shown in cross-section of the outer shaft 10.
  • the grooves 20 can be introduced, for example, by a machining process in the surface, for example by a honing process.
  • FIG. 10 shows by way of example schematically the outer surface 13 with introduced into this surface structures 21, which in the FIG. 10a are shown according to the section line I to I.
  • the surface structuring 21 has a semicircular cavity and extends oblong over portions of the outer surface 13.
  • Such surface structuring 21 can also be introduced into the outer surface 13 via laser beam processing methods, honing methods, electron beam methods or etching methods and also serve for the formation of micro-lubricating oil reservoirs. to stock a lot of lubricating oil for lubrication of the sliding bearing gap.
  • the surface structures 19 may intersect the oil guide grooves 14 in the outer surface 13 or be arranged adjacent thereto, so that lubricating oil can pass from the ⁇ lleitnuten 14 in the surface structures 21.

Landscapes

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

Claims (10)

  1. Arbre à cames réglable (1) pour la commande des soupapes d'un moteur à combustion interne, comprenant un arbre extérieur (10) et un arbre intérieur (11) s'étendant de manière concentrique dans l'arbre extérieur (10) et reçu de manière à pouvoir tourner dans celui-ci, au moins un élément de came (12) étant supporté de manière rotative sur la surface extérieure (13) de l'arbre extérieur (10) en formant une fente de palier lisse, et l'élément de came (12) étant connecté de manière solidaire en rotation à l'arbre intérieur (11),
    caractérisé en ce que dans la surface extérieure (13) de l'arbre extérieur (10) est pratiquée au moins une rainure de guidage d'huile (14), dans une position et avec une longueur axiale telles que la rainure de guidage d'huile (14) soit réalisée au moins sur la largeur axiale de la fente de palier lisse et soit guidée hors de la fente de palier lisse au niveau d'au moins un côté de l'élément de came (12) avec une portion de rainure libre (15).
  2. Arbre à cames réglable (1) selon la revendication 1, caractérisé en ce que la rainure de guidage d'huile (14) s'étend dans la direction d'étendue de l'arbre à cames (1) et/ou en ce que la rainure de guidage d'huile (14) s'étend en spirale avec une composante d'étendue axiale et avec une composante d'étendue s'étendant dans la direction périphérique dans la surface extérieure (13) de l'arbre extérieur (10).
  3. Arbre à cames réglable (1) selon la revendication 1 ou 2, caractérisé en ce qu'une première rainure de guidage d'huile (14) est réalisée au niveau d'une zone de positionnement (16) d'un élément de cames (12) sur l'arbre extérieur (10) avec un premier sens de rotation de spirale et au moins une deuxième rainure de guidage d'huile (14) est réalisée avec un deuxième sens de rotation de spirale réalisé en sens inverse du premier sens de rotation de spirale.
  4. Arbre à cames réglable (1) selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la rainure de guidage d'huile (14) est guidée des deux côtés de l'élément de cames (12) hors de la fente de palier lisse avec une portion de rainure libre respective (15).
  5. Arbre à cames réglable (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que pour la connexion solidaire en rotation de l'élément de cames (12) à l'arbre intérieur (11), il est prévu un boulon (17) qui s'étend transversalement à travers l'arbre intérieur (11) et à travers au moins une ouverture de boulon (18) pratiquée dans l'arbre extérieur (10) et s'insère avec au moins une extrémité dans l'élément de cames (12), l'au moins une rainure de guidage d'huile (14) s'étendant à distance de l'agencement de l'ouverture de boulon (18) dans l'arbre extérieur (10).
  6. Arbre à cames réglable (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément de came (12) présente un épaulement de came (12a), la largeur axiale de la fente de palier lisse étant déterminée conjointement par la largeur de l'épaulement de cames (12a).
  7. Arbre à cames réglable (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que la rainure de guidage d'huile (14) présente une section transversale variable sur la longueur, en particulier de telle sorte que la rainure de guidage d'huile (14) se rétrécisse depuis la portion de rainure libre (15) vers la fente de palier lisse.
  8. Arbre à cames réglable (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que sur la surface extérieure (13) de l'arbre extérieur (10) et/ou sur la surface intérieure dans l'alésage de came est prévue une structuration de surface (19, 20, 21) qui est notamment créée de telle sorte que la capacité de support d'un film de lubrifiant se formant entre la surface extérieure (13) de l'arbre extérieur (10) et la surface intérieure dans l'alésage de came soit améliorée.
  9. Arbre à cames réglable (1) selon la revendication 8, caractérisé en ce que la structuration de surface (19, 20, 21) est produite par un procédé d'usinage par faisceau laser, un procédé de honage, un procédé à faisceau d'électrons ou un procédé de gravure dans la surface extérieure (13) de l'arbre extérieur (10) et/ou sur la surface intérieure dans l'alésage de came.
  10. Arbre à cames réglable (1) selon la revendication 8 ou 9, caractérisé en ce que la structuration de surface (19, 20, 21) est réalisée par rapport à l'étendue en longueur de l'arbre à cames (1) de manière à s'étendre axialement, dans la direction périphérique, en spirale ou sous forme de réseau.
EP14733087.2A 2013-06-27 2014-06-24 Arbre à cames réglable Not-in-force EP3014079B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013106746.8A DE102013106746A1 (de) 2013-06-27 2013-06-27 Verstellbare Nockenwelle
PCT/EP2014/001709 WO2014206552A1 (fr) 2013-06-27 2014-06-24 Arbre à cames réglable

Publications (2)

Publication Number Publication Date
EP3014079A1 EP3014079A1 (fr) 2016-05-04
EP3014079B1 true EP3014079B1 (fr) 2017-03-29

Family

ID=51022281

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14733087.2A Not-in-force EP3014079B1 (fr) 2013-06-27 2014-06-24 Arbre à cames réglable

Country Status (9)

Country Link
US (1) US10132202B2 (fr)
EP (1) EP3014079B1 (fr)
JP (1) JP6328753B2 (fr)
KR (1) KR20160026979A (fr)
CN (1) CN105339607B (fr)
BR (1) BR112015024442A2 (fr)
DE (1) DE102013106746A1 (fr)
MX (1) MX2015017802A (fr)
WO (1) WO2014206552A1 (fr)

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Publication number Priority date Publication date Assignee Title
DE102015113356A1 (de) 2015-08-13 2017-02-16 Thyssenkrupp Ag Verstellbare Nockenwelle mit einem Phasenteller
CN110848365B (zh) * 2018-08-21 2022-03-11 上海汽车集团股份有限公司 一种滑移凸轮机构

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DE3932328A1 (de) * 1989-09-28 1991-04-11 Opel Adam Ag Verfahren zur bearbeitung von durch reibung hochbeanspruchten flaechen in brennkraftmaschinen und vorrichtung zur durchfuehrung des verfahrens
JPH1113426A (ja) * 1997-06-23 1999-01-19 Daido Metal Co Ltd ローラ支持装置
DE102005040934A1 (de) 2005-02-03 2006-08-17 Mahle International Gmbh Verstellbare Nockenwelle, insbesondere für Verbrennungsmotoren von Kraftfahrzeugen, mit einer hydraulischen Stelleinrichtung
DE202005021715U1 (de) 2005-02-03 2009-07-02 Mahle International Gmbh Nockenwelle mit gegeneinander verdrehbaren Nocken für insbesondere Kraftfahrzeuge
GB2431977A (en) * 2005-11-02 2007-05-09 Mechadyne Plc Camshaft assembly
JP2008208755A (ja) * 2007-02-26 2008-09-11 Honda Motor Co Ltd 可変バルブタイミング機構
US7913657B2 (en) * 2007-02-23 2011-03-29 Honda Motor Co., Ltd. Variable valve timing mechanism
US8028666B2 (en) 2008-03-12 2011-10-04 GM Global Technology Operations LLC Concentric camshaft with bearing sleeve and method of debris removal
DE102008025781A1 (de) * 2008-05-29 2009-12-10 Thyssenkrupp Presta Teccenter Ag Verstellbare Nockenwellenanordnung
EP2530259B1 (fr) * 2010-01-25 2016-07-20 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Commande de soupapes variable pour moteur à combustion interne
EP2662596B1 (fr) 2010-12-28 2015-11-11 Toyota Jidosha Kabushiki Kaisha Structure à deux arbres à cames et procédé d'assemblage de structure à deux arbres à cames
DE102012103594B4 (de) 2012-04-24 2015-08-27 Thyssenkrupp Presta Teccenter Ag Nockenwelle mit durch Spritzöl beölbare, verstellbare Nocken

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Also Published As

Publication number Publication date
WO2014206552A1 (fr) 2014-12-31
CN105339607A (zh) 2016-02-17
US20160138434A1 (en) 2016-05-19
MX2015017802A (es) 2016-04-19
EP3014079A1 (fr) 2016-05-04
BR112015024442A2 (pt) 2017-07-18
CN105339607B (zh) 2018-12-07
JP6328753B2 (ja) 2018-05-23
KR20160026979A (ko) 2016-03-09
DE102013106746A1 (de) 2014-12-31
JP2016530427A (ja) 2016-09-29
US10132202B2 (en) 2018-11-20

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