US20130199479A1 - Rotor for a camshaft phaser, and camshaft phaser - Google Patents

Rotor for a camshaft phaser, and camshaft phaser Download PDF

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Publication number
US20130199479A1
US20130199479A1 US13/879,910 US201113879910A US2013199479A1 US 20130199479 A1 US20130199479 A1 US 20130199479A1 US 201113879910 A US201113879910 A US 201113879910A US 2013199479 A1 US2013199479 A1 US 2013199479A1
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United States
Prior art keywords
rotor
main body
recited
cover element
oil channels
Prior art date
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Abandoned
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US13/879,910
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English (en)
Inventor
Rainer Ottersbach
Juergen Weber
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Schaeffler Technologies AG and Co KG
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Schaeffler Technologies AG and Co KG
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Application filed by Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Publication of US20130199479A1 publication Critical patent/US20130199479A1/en
Assigned to SCHAEFFLER TECHNOLOGIES GMBH & CO. KG reassignment SCHAEFFLER TECHNOLOGIES GMBH & CO. KG MERGER AND CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: Schaeffler Technologies AG & Co. KG, SCHAEFFLER VERWALTUNGS 5 GMBH
Assigned to Schaeffler Technologies AG & Co. KG reassignment Schaeffler Technologies AG & Co. KG CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
Assigned to Schaeffler Technologies AG & Co. KG reassignment Schaeffler Technologies AG & Co. KG CORRECTIVE ASSIGNMENT TO CORRECT THE PROPERTY NUMBERS PREVIOUSLY RECORDED ON REEL 037732 FRAME 0347. ASSIGNOR(S) HEREBY CONFIRMS THE APP. NO. 14/553248 SHOULD BE APP. NO. 14/553258. Assignors: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
Abandoned 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
    • 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
    • F01L2001/34479—Sealing of phaser devices
    • 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
    • F01L2303/00—Manufacturing of components used in valve arrangements

Definitions

  • the present invention relates to a rotor for a camshaft phaser, including a hub part having an oil supply passage, at least one vane radially disposed on the hub part, as well as oil channels extending through the hub part and fluidically connected to the oil supply passage.
  • the present invention further relates to a camshaft phaser for adjusting the phase angle of a camshaft with respect to a crankshaft of an engine, the camshaft phaser having such a rotor.
  • camshafts are used to actuate the so-called gas-exchange valves.
  • the cams of the camshaft normally bear against cam followers, such as bucket tappets, finger followers or cam levers.
  • cam followers such as bucket tappets, finger followers or cam levers.
  • the cams act on the cam followers, which in turn actuate the gas exchange valves.
  • the position and shape of the cams determine both the opening duration and the opening amplitude, as well as the opening and closing points of the gas exchange valves.
  • camshaft phasing Shifting the angular position of the camshaft relative to a crankshaft in order to optimize the valve timing for different speed and load conditions is referred to as camshaft phasing.
  • camshaft phaser operates according to what is known as the swing motor principle.
  • a stator and a rotor are provided which are arranged coaxially with respect to each other and are movable relative to one another.
  • the stator and the rotor together form hydraulic chambers, referred to here simply as chambers.
  • Each chamber pair is delimited by webs of the stator and is divided by a respective vane of the rotor into two oppositely acting chambers, the volumes of which are oppositely varied by rotational movement of the rotor relative to the stator.
  • the respective vane bears against one of the boundary webs of the stator.
  • the relative rotational movement of the rotor is accomplished by displacement of the vane.
  • a hydraulic medium such as oil
  • Displacement of the rotor causes the camshaft attached to the rotor to be phase-shifted, for example, in the advance direction, i.e. towards an earlier opening point of the gas exchange valves.
  • Displacement of the rotor in the opposite direction causes the camshaft to be phase-shifted relative to the crankshaft in the retard direction, i.e. towards a later opening point of the gas exchange valves.
  • the hydraulic medium is conducted from a central oil supply passage into the respective chambers via oil channels arranged on both sides of the respective vanes.
  • German Patent Application No. DE 10 2007 020 527 A1 describes a rotor which is adapted to serve as a driven member.
  • the inner rotor is non-rotatably connected to a camshaft.
  • An outer rotor constitutes a driving member and has five hollows or chambers spaced apart in the circumferential direction; one vane of the inner rotor extending into each of said hollows.
  • the hollows are delimited in the axial direction by two side covers. In this way, each of the hollows is sealed pressure-tight.
  • a particular complex and correspondingly expensive step in the manufacture of a rotor is the formation of the oil channels.
  • the oil channels are bores made in the material of the rotor.
  • the oil channels are formed in the green body in a separate manufacturing step.
  • the present invention provides a rotor for a camshaft phaser, including a hub part having an oil supply passage, in particular a central oil supply passage, at least one vane radially disposed on the hub part, as well as oil channels extending through the hub part and fluidically connected to the oil supply passage.
  • the rotor includes a main body and at least one cover element arranged on an end face of the main body.
  • the oil channels are axially closed by the cover element and, in particular, are formed by the cover element.
  • the oil channels extend substantially radially between the central oil supply passage and an outer periphery of the rotor.
  • a camshaft phaser for adjusting the phase angle of a camshaft with respect to a crankshaft of an engine, the camshaft phaser including such a rotor in accordance with one of the embodiments described above.
  • the advantages and preferred embodiments described below with reference to the rotor apply equally to the camshaft phaser.
  • the oil channels in the hub part of the rotor are axially closed by the cover element. This makes it much easier to produce the oil channels, which in particular are formed as groove-like recesses in the surface of the main body and/or in the surface of the cover element. It is only when the cover element is attached and secured to the main body that the oil channels are axially closed and disposed inside the rotor. This way of producing the oil channels is associated with a low level of technical complexity and does not require subsequent machining of the oil channels. In particular, no additional manufacturing step is needed to form bores in the material of the rotor.
  • the rotor Since the rotor is made up of several parts, there is greater freedom in the design of each of the parts, in particular with regard to the formation of spaces within the rotor at the junction between the rotor and the cover element. Such spaces are easily formed in various geometric shapes and sizes by assembling the individual parts. Moreover, owing to the multi-part rotor design, the main body and the cover element have a relatively small volume. Due to the split design, the rotor can be given complex geometries in a simple manner by correspondingly shaping the individual parts of the main body and without additional subsequent machining.
  • the main body and the cover member have, in particular, different geometries.
  • the rotor is configured such that the main loads of attachments, such as the preload force of a central bolt of a central valve, the adjusting torque, the return spring torque, and the load of a locking device, are carried directly by the fatigue-resistant main body without placing any load on the cover element. Therefore, preferably, the forces exerted by such attachments are introduced solely into the main body.
  • the main body has a thickness equal to a minimum thickness necessary to accommodate the preload force of the central bolt. For an overall rotor thickness of, for example, between 16 mm and 30 mm, the thickness of the main body is in particular about 4 to 10 mm. The remaining thickness of the rotor is defined by the at least one cover element.
  • the main body essentially forms the hub part of the rotor.
  • it preferably includes the vanes, a locking bore, and at least portions of supporting surfaces for axial and radial bearings.
  • the main body is in particular configured to be attached to the camshaft in a single additional operation by a friction fit, a form fit, or a material-to-material bond, for example, by brazing or welding.
  • the cover element forms a wall on an end face of the rotor, and serves in particular to provide sealing surfaces in order to reduce leakage.
  • the cover element is in particular only connected to the main body, but not to the outer stator.
  • the main body and the cover element are made from different materials.
  • the main body which bears the forces that act on the rotor, is made from a hard and wear-resistant material.
  • the cover element is in particular made from a lighter material than the main body, thereby reducing the weight of the rotor.
  • two cover elements are provided on the main body on the two sides thereof.
  • the rotor has a symmetrical design, where one cover element is provided on each end face of the main body.
  • two rows of oil channels can be easily formed in the axial direction, the oil channels extending along the junctions between the main body and the respective cover element.
  • the two cover elements may be either identical or different in design.
  • the two cover elements are identical in design. Since the two cover elements are configured substantially identically, their design is particularly convenient from a manufacturing point of view, because both cover elements may be manufactured using the same implement.
  • the cover element is preferably made of plastic.
  • Plastic is a material which is lightweight and, in addition, particularly easy to shape.
  • the use of plastic as the shell material for the main body makes it possible to significantly reduce the weight of the rotor, for example, from about 250 g to about 150 g.
  • the cover elements are made from a light metal or from a non-metallic material.
  • the cover element is injection-molded onto the main body.
  • Thermosetting plastic is an example of a material that is suitable for this use.
  • the oil channels are formed using slides which extend between the main body and the molding material for the cover elements and which are removed radially after said injection-molding process is complete.
  • the cover element is a separate component attached to the main body.
  • the connection between the main body and the cover element is accomplished by a friction fit, a form fit, or a material-to-material bond, and is in particular permanent, so that in the assembled state, the rotor is one piece and is inserted as such in the camshaft phaser.
  • the main body is preferably made from a metal.
  • the materials used for the main body are, for example, steel or sintered steel, as well as light metals, such as aluminum or sintered aluminum.
  • the main body is a sintered body.
  • other manufacturing methods may be used to produce the main body. Examples of such methods include forming, separating, filling or punching and stacking processes.
  • the main body is provided with first recesses for the oil channels. If the main body is a sintered body, then initially a green body or compact of compressed powder, in particular metal powder, is produced and the first recesses for the oil channels are formed in the desired cross-sectional shape and size in the end-face surface of the main body. Subsequently, the green body is sintered.
  • second recesses for the oil channels are provided in the cover element. Regardless of whether only the first or only the second recesses are provided, or whether the first and second recesses are provided on the main body and on the cover element, the recesses are arranged and dimensioned such that when the rotor is in the assembled state, the oil channels are axially closed on one side by the cover element and on the other side by the main body.
  • the first and/or the second recesses are preferably rectangular in cross section, so that the oil channels are also rectangular. Therefore, the oil channels have an oblong cross-sectional area.
  • the advantage of a rectangular oil channel cross section over a circular one is that the oil channels can be made wider, in particular in the circumferential direction. Therefore, in comparison to bores having the same, in particular axial depth (diameter of the bore), the cross-sectional area can be increased, thereby reducing the pressure drop in the oil channels. In this case, the rate of oil flow to the chambers is higher, so that the hydraulics for actuating the rotor are overall faster and more flexible.
  • the recesses are circular in configuration or have a different geometric shape.
  • the main body is provided with cavities which serve in particular to reduce the weight of the rotor. This, on the one hand, avoids an excessive moment of inertia and, on the other hand, reduces the amount of material required to manufacture the rotor.
  • the cavities are preferably formed as closed cavities within the rotor.
  • the cavities are axially sealed by the cover element, as are the oil channels. However, in contrast to the oil channels, they are not radially open, but closed in all directions when the rotor is in the assembled state.
  • the area of the cavities is expediently about 1 ⁇ 3 to 2 ⁇ 3 of the area of the hub part between two vanes.
  • the cavities are formed as depressions in the surface of the main body.
  • the cavities are apertures in the material of the main body, said apertures extending along the entire axial length of the main body and being closed on both sides by a cover element.
  • the main body has ribs extending from its end faces and forming axial supporting surfaces when the rotor is in the assembled state. Therefore, said ribs preferably terminate substantially flush with the cover element.
  • the term “flush”, as used herein, is intended to mean that the cover element and the axial rib surface forming the supporting surface are in the same plane, or that the cover element is slightly lower, for example, up to 50 ⁇ m lower, than the ribs.
  • the ribs form thrust bearings via which the rotor bears against the side cover. Since the points of contact between the rotor and the side cover and between the rotor and the stator are highly stressed, such critical functional surfaces are manufactured from the more wear-resistant material of the main body.
  • the radially outer regions of the vanes are preferably also formed of the material of the main body.
  • the cover element covers the end face of the main body only partially.
  • the cover element may, for example, be configured such that it extends only across the hub part and does not, or only partially, cover the vanes.
  • the cover element always covers the regions which are to be axially sealed or which have a sealing function (e.g., toward the side covers) and therefore need a suitable sliding layer that is sealed by the cover elements. Therefore, this end-face surface forms a sealing surface.
  • FIG. 1 shows a longitudinal sectional view through a camshaft phaser
  • FIG. 2 shows a perspective view of a rotor
  • FIG. 3 shows a first side of a main body for the rotor of FIG. 2 ;
  • FIG. 4 shows the main body of FIG. 3 in side view
  • FIG. 5 shows a second rotor side opposite the first side shown in FIG. 3 ;
  • FIG. 6 shows the main body of FIGS. 3 through 5 in perspective view
  • FIG. 7 shows an outer face of a cover element for a rotor according to FIG. 2 ;
  • FIG. 8 shows a side view of two assembled cover elements according to FIG. 7 ;
  • FIG. 9 shows an inner face of the cover element of FIG. 7 ;
  • FIG. 10 shows a perspective view of two cover elements in a first orientation
  • FIG. 11 shows the two cover elements of FIG. 10 in a second orientation.
  • FIG. 1 shows, in longitudinal cross section, a hydraulic camshaft phaser 2 for adjusting the phase angle of a camshaft 3 .
  • Sectional plane A-A of FIG. 1 is shown in FIG. 2 .
  • Camshaft phaser 2 includes an outer stator 4 and an inner rotor 6 arranged concentrically and rotatably therein. Rotor 6 is connected to camshaft 3 by a central bolt 7 .
  • Formed between stator 4 and rotor 6 are chambers (not specifically shown) which are closed in the axial direction by two side covers 8 a, 8 b and delimited in the circumferential direction by radial webs 9 of stator 4 .
  • the two side covers 8 a, 8 b are non-rotatably connected to stator 4 by screws 11 .
  • Rotor 6 includes a hub part 10 having a central circular oil supply passage 12 (see FIG. 2 ).
  • Oil supply passage 12 is concentric with an axis of rotation D of rotor 6 .
  • Central bolt 7 extends through oil supply passage 12 .
  • a hydraulic medium, in particular oil is introduced through oil supply passage 12 and passed from rotor 6 to the chambers through radially extending oil channels 14 .
  • hub part 10 is provided with radially extending equally spaced vanes 16 .
  • Each of vanes 16 is rotatably disposed in one of the chambers. Vane 16 divides the chamber into two oppositely acting sub-chambers (not specifically shown). In order to change the position of vane 16 , and thus of rotor 6 , relative to stator 4 , oil is introduced into one of the oppositely acting chambers.
  • Oil channels 14 each have an inlet 14 a fluidically connected to central oil supply passage 12 .
  • An outlet 14 b is disposed at the periphery in the region of a vane 16 .
  • oil channels 14 each open via their outlets 14 b into respective ones of the oppositely acting sub-chambers between stator 4 and rotor 6 .
  • An oil channel 14 is provided on both sides of vane 16 .
  • the two oil channels 14 near a vane 16 are axially offset with respect to each other.
  • rotor 6 is made up of a main body 18 and two cover elements 20 .
  • Cover elements 20 are arranged on the end faces of main body 18 such that they axially close oil channels 14 .
  • oil channels 14 extend along the junction between the main body 18 and the respective cover element 20 .
  • oil channels 14 are rectangular in cross section.
  • the cross section of oil channels 14 is circular.
  • the rectangular cross section has the advantage that they can be made larger and, therefore, more oil is conveyed through oil channels 14 per unit of time.
  • Main body 18 and cover element 20 are formed from different materials.
  • main body 18 is a sintered metal body and cover elements 20 are plastic parts.
  • cover elements 20 are separate components which are manufactured separately from main body 18 and suitably attached to main body 18 in a later manufacturing step.
  • cover elements 20 maybe formed by injection-molding plastic, in particular, thermosetting plastic, over main body 18 .
  • injection-molding plastic in particular, thermosetting plastic
  • slides are arranged between main body 18 and the later cover elements 20 , said slides being subsequently radially removed, so that oil channels 14 are formed in their place.
  • main body 18 includes both hub part 10 and vanes 16 .
  • hub part 10 is provided with cavities 22 that are formed as axial apertures in the material of main body 18 . Cavities 22 are trapezoidal in cross section and axially closed by cover elements 27 when rotor 6 is in the assembled state.
  • first recesses 24 are defined by first recesses 24 in the material of main body 18 .
  • first recesses 24 are rectangular in shape.
  • recesses 24 are semicircular in cross section.
  • main body 18 has ribs 26 which extend from its end faces in the region of vanes 16 and are flush with the respective cover elements 20 when rotor 6 is in the assembled state, as can be seen in FIG. 2 .
  • Ribs 26 serve as thrust bearings to bear against side covers 8 a, 8 b. As a result of their contact with side covers 8 a, 8 b, the ribs are exposed to high torsional force during rotation of rotor 6 relative to stator 4 .
  • cover elements 20 are more susceptible to wear, ribs 26 are somewhat higher, in particular about 50 ⁇ m higher, than cover elements 20 to prevent forces from being transmitted from side covers 8 a, 8 b to cover elements 20 .
  • FIGS. 7 through 11 illustrate the configuration of cover elements 20 , such as are used in rotor 6 .
  • Main body 18 has been omitted for the sake of clarity.
  • each cover element 20 has a substantially flat outer face 28 a.
  • Cover elements 20 cover the end faces of main body 18 only partially; i.e., the surface or rotor 6 includes both elements of plastic and elements of metal.
  • cover elements 20 are formed with radially projecting collar elements 30 , which partially surround ribs 26 in the circumferential direction when cover elements 20 rest on main body 18 .
  • Collar elements 30 form an oblong slot 32 for receiving rib 26 .
  • inner face 28 b of cover elements 20 which is shown in FIG. 9 , is provided with second recesses 34 corresponding to first recesses 24 on main body 18 , so that the first and second recesses 24 , 34 form oil channels 14 when cover elements 20 are attached to main body 18 .
  • outer faces 28 a of cover elements 20 may also be provided with similar recesses to form channels.
  • Inner faces 28 b of cover elements 20 are further provided with substantially trapezoidal depressions 36 . The position and shape of depressions 36 correspond to those of apertures 22 in main body 18 , so that depressions 36 complement cavities 22 at the end faces.
  • main body 18 is formed from a sinter material in a sintering process. In the process, weight-reducing cavities 22 and first recesses 24 are incorporated into main body 18 .
  • cover elements 20 are manufactured and applied to main body 18 . This may be done in two ways. In a first variant, cover elements 20 are manufactured as separate components in a separate manufacturing step and attached to main body 18 by a friction fit, a form fit, or a material-to-material bond. Alternatively, cover elements 20 is injection-molded onto main body 18 . After cover elements 20 are attached to main body 18 , both the cavities 22 and the oil channels 14 are enclosed within rotor 6 , without the need for subsequent machining of rotor 6 , for example, to form bores.
  • a rotor 6 designed in this way is particularly suited for use as an inner rotor for camshaft phaser 2 , but is not limited to such use. Rather, such a rotor may also be used, for example, in pumps or in other similar applications.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
US13/879,910 2010-11-05 2011-08-22 Rotor for a camshaft phaser, and camshaft phaser Abandoned US20130199479A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102010050606A DE102010050606A1 (de) 2010-11-05 2010-11-05 Rotor für einen Nockenwellenversteller sowie Nockenwellenversteller
DE102010050606.0 2010-11-05
PCT/EP2011/064332 WO2012059252A1 (de) 2010-11-05 2011-08-22 Rotor für einen nockenwellenversteller sowie nockenwellenversteller

Publications (1)

Publication Number Publication Date
US20130199479A1 true US20130199479A1 (en) 2013-08-08

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Application Number Title Priority Date Filing Date
US13/879,910 Abandoned US20130199479A1 (en) 2010-11-05 2011-08-22 Rotor for a camshaft phaser, and camshaft phaser

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US (1) US20130199479A1 (zh)
CN (1) CN103210186A (zh)
DE (1) DE102010050606A1 (zh)
WO (1) WO2012059252A1 (zh)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015043582A1 (de) * 2013-09-24 2015-04-02 Schaeffler Technologies AG & Co. KG Nockenwellenversteller
JP2016532041A (ja) * 2013-09-23 2016-10-13 ゲーカーエン シンター メタルズ エンジニアリング ゲーエムベーハー カム軸アジャスタ用のロータ、カム軸アジャスタ用のロータを製造するための組部品、好ましくはカム軸アジャスタ用のロータである接合された構成要素の製造方法
US20160312667A1 (en) * 2013-12-18 2016-10-27 Schaeffler Technologies AG & Co. KG Design principle of a split rotor for a hydraulic camshaft adjuster
US20160319711A1 (en) * 2013-12-18 2016-11-03 Schaeffler Technologies AG & Co. KG Camshaft centering in the split rotor of a hydraulic camshaft adjuster
US20170037746A1 (en) * 2013-12-18 2017-02-09 Schaeffler Technologies Ag & Co. Lg Connection concept of a multipart rotor for a hydraulic camshaft adjuster
US10174644B2 (en) 2013-08-27 2019-01-08 Schaeffler Technologies AG & Co. KG Multipart rotor for a hydraulic camshaft adjuster with a supply of oil to the pressure chambers through the vanes
US10247057B2 (en) 2014-05-08 2019-04-02 Schaeffler Technologies AG & Co. KG Camshaft adjuster having a variable-length insert part
US10267188B2 (en) * 2014-08-25 2019-04-23 Schaeffler Technologies AG & Co. KG Rotor for a hydraulic camshaft adjuster and manufacturing method for a rotor for a camshaft adjuster

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Publication number Priority date Publication date Assignee Title
DE102012205705B4 (de) * 2012-04-05 2018-02-08 Schaeffler Technologies AG & Co. KG Nockenwellenversteller mit einem An- und/oder Abtriebselement in Sandwichbauweise sowie ein Verfahren zur Herstellung des An- bzw. Abtriebselement in Sandwichbauweise
DE102013207747A1 (de) 2013-04-29 2014-10-30 Schaeffler Technologies Gmbh & Co. Kg Hydraulischer Nockenwellenversteller mit partieller Ausnehmung an seiner Nockenwellenflanschfläche
DE102013019237A1 (de) * 2013-11-15 2015-05-21 Daimler Ag Nockenwellenversteller für eine Brennkraftmaschine
DE102014216850A1 (de) * 2014-08-25 2015-06-25 Schaeffler Technologies AG & Co. KG Hydraulischer Nockenwellenversteller sowie Herstellungsverfahren eines hydraulischen Nockenwellenverstellers
CN107278238B (zh) * 2015-02-25 2019-12-27 舍弗勒技术股份两合公司 具有中间位置和延迟锁定位置的凸轮轴调相器
DE102016212861A1 (de) * 2016-07-14 2018-01-18 Schaeffler Technologies AG & Co. KG Mehrteiliger Rotor eines Nockenwellenverstellers, wobei der Rotor zumindest eine sich durch alle Rotorteile erstreckende zylindrische Aufnahmebohrung hat
DE202020104168U1 (de) * 2019-07-25 2020-09-10 ECO Holding 1 GmbH Nockenwellenversteller

Citations (3)

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JP2016532041A (ja) * 2013-09-23 2016-10-13 ゲーカーエン シンター メタルズ エンジニアリング ゲーエムベーハー カム軸アジャスタ用のロータ、カム軸アジャスタ用のロータを製造するための組部品、好ましくはカム軸アジャスタ用のロータである接合された構成要素の製造方法
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US20160319711A1 (en) * 2013-12-18 2016-11-03 Schaeffler Technologies AG & Co. KG Camshaft centering in the split rotor of a hydraulic camshaft adjuster
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US10584617B2 (en) * 2013-12-18 2020-03-10 Schaeffler Technologies AG & Co. KG Camshaft centering in the split rotor of a hydraulic camshaft adjuster
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DE102010050606A1 (de) 2012-05-10
WO2012059252A1 (de) 2012-05-10

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