EP2746545B1 - Nockenwelle - Google Patents

Nockenwelle Download PDF

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Publication number
EP2746545B1
EP2746545B1 EP13193546.2A EP13193546A EP2746545B1 EP 2746545 B1 EP2746545 B1 EP 2746545B1 EP 13193546 A EP13193546 A EP 13193546A EP 2746545 B1 EP2746545 B1 EP 2746545B1
Authority
EP
European Patent Office
Prior art keywords
functional
functional device
camshaft
functional elements
cylinder head
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
EP13193546.2A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2746545A1 (de
Inventor
Frank DAUTEL
Thomas Flender
Antonio Menonna
Stefan Steichele
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.)
Mahle International GmbH
Original Assignee
Mahle International GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=49626829&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2746545(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Mahle International GmbH filed Critical Mahle International GmbH
Publication of EP2746545A1 publication Critical patent/EP2746545A1/de
Application granted granted Critical
Publication of EP2746545B1 publication Critical patent/EP2746545B1/de
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
    • 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
    • F01L2001/0475—Hollow camshafts

Definitions

  • the present invention relates to a camshaft of an internal combustion engine having at least one functional device connected thereto via a shaft-hub connection according to the preamble of claim 1.
  • the invention also relates to an internal combustion engine with at least one such camshaft.
  • a camshaft on an otherwise not shown internal combustion engine with at least one connected via a press connection function device is known.
  • the functional device has two different functional elements that fulfill different functions.
  • the functional element is designed as a hill contour and fulfills the function of the joint connection of the functional device in the camshaft tube of the camshaft, whereas the functional element receives a cam.
  • camshafts are well known, as well as the combination of functional elements with such camshafts, for example via a thermal joint seat.
  • functional devices such as gears, drive wheels, cams, pump actuators, such as pump cam for a high-pressure pump or Oldham coupling for rotational connection of vacuum or oil pumps, connected via pressed or thermally-joined plug with the camshaft.
  • a separate functional element such as gears or cams required, which still have to be added in different ways under certain circumstances.
  • the present invention therefore deals with the problem of providing a camshaft of the generic type an improved embodiment, which is characterized in particular by a simplified production.
  • the present invention is based on the general idea of equipping a functional device on a camshaft with at least two different functional elements, each of which can fulfill different functions.
  • the combined in the functional device functional elements are connected via a shaft-hub connection, specifically via a thermal joint seat with the camshaft.
  • the basic idea is therefore to summarize or integrate as many - at least two - functional elements in a common functional device and only have to add this common assembly, that is, the functional device with the camshaft or a camshaft tube. This offers considerable advantages, for example in the area of weight, since a functional device composed of several functional elements is significantly lighter in construction than separately mounted functional elements.
  • the functional device according to the invention also allows a higher torque transmission than with a, a smaller inner diameter having plug can be realized.
  • At least one functional element is a toothed wheel, in particular a coupling gear, a cam, a pump actuating device, for example in the form of a cam, a donor wheel, a pulley, a clutch, in particular an Oldham clutch, or a sprocket.
  • a toothed wheel in particular a coupling gear, a cam, a pump actuating device, for example in the form of a cam, a donor wheel, a pulley, a clutch, in particular an Oldham clutch, or a sprocket.
  • the functional device is designed as a one-piece sintered component.
  • the individual functional elements of the functional device are integrally connected to each other, so that the functional device can be formed completely in one piece. This allows, in particular, a rational production of the functional device, since an aligned joining of the individual functional elements to the functional device can be dispensed with.
  • one of the functional elements is designed as an Oldham coupling, then it can be coupled externally to the cylinder head via this, for example, a pump.
  • a pump for example, a pump.
  • Such Oldham coupling allows a clutch in which the torque is transmitted between two parallel shafts. It usually consists of three discs, the outer two are fixed to the respective shafts or on the pump and the functional element and the middle is mounted in two mutually orthogonal tongue and groove connections to the other two discs.
  • Such Oldham coupling in particular allows compensation of small parallel offsets between the camshaft and an axis of the pump, whereby at least small manufacturing inaccuracies are easily compensate, so that the entire construction allows greater overall manufacturing tolerances.
  • an inventive camshaft 1 of an internal combustion engine 2 has at least one functional device 3 connected to the camshaft 1 via a shaft-hub connection, in particular via a press connection, which is composed of at least two different functional elements 4.
  • the individual functional elements 4 fulfill different functions and are only summarized to simplify the assembly in the common functional device 3.
  • At least one functional element 4 can be designed, for example, as a toothed wheel 5, in particular as a coupling toothed wheel, as a cam, as a pump actuation device, as a donor wheel 6, as a pulley, a clutch 7, in particular as an Oldham clutch, or as a sprocket 5 '.
  • the functional device 3 thus has three functional elements 4, namely the clutch 7, the sprocket 5 'and gear 5 and the encoder wheel 6.
  • the production of the camshaft 1 is significantly simplified, not now more all functional elements 4 must be added separately with the camshaft 1, but only a common functional device 3, whereby the joining process can be significantly streamlined.
  • the functional device 3 with a plurality of functional elements 4 is lighter than the respective separate functional elements 4, whereby a weight saving can be achieved, which in turn has a positive effect on fuel consumption.
  • the functional device 3 according to the invention also allows a higher torque transmission, as over the transverse press fit, for example produced by means of thermal joining, or a longitudinal press fit, a larger force-transmitting contact surface can be created.
  • the combined arrangement of a plurality of functional elements 4 in a common functional device 3 also offers great advantages in particular in the assembly of the functional device 3 in a hood or a cylinder head 8, since there usually extremely cramped space conditions are encountered.
  • FIG. 2 is a view from above of the cylinder head 8 of the internal combustion engine 2 shown with two camshafts 1, wherein on the lower camshaft 1, the functional device 3 according to the invention is arranged.
  • This in turn summarizes three functional elements 4, namely the clutch 7, a gear 5, in the manner of a coupling gear for coupling with the second camshaft 1, and the encoder wheel 6.
  • a storage of the camshaft 1 on the cylinder head 8 takes place by means of a bearing frame 9, which is connected by screws 10 with the cylinder head 8, that is an engine block.
  • a pump 11 can be coupled to transmit rotation with the camshaft 1.
  • the Oldham coupling thereby allows at least a small parallelism of the axes of the camshaft 1 and the axis of the pump, whereby the manufacturing accuracy does not have to be as high as without such Oldham coupling.
  • the functional device 3 is integrally formed, in particular as a one-piece sintered component, so that a separate and previous assembly of the individual functional elements 4 to the common functional device 3 can be omitted.
  • the individual functional elements 4 of the functional device 3 can also be manufactured separately and then connected to the common functional device 3 firmly together, in particular welded together, soldered, screwed or glued.
  • a functional device 3 is shown, the two functional elements 4, namely the gear 5 and the clutch 7 integrally integrated.
  • a further functional element 4 for example a transmitter wheel 6, could now additionally be attached or welded.
  • positioning aids 12 can be provided on the individual functional elements 4, which allow a fixation of the individual functional elements 4 to one another exclusively in a predefined angular position.
  • the positioning aid 12 is designed as a two-plane, wherein, for example, the encoder wheel 6 has a complementary recess, so as to allow an angle-aligned fixing.
  • the positioning aid 12 can also be designed as a flat or as a multi-flat, in particular as a triple flat. In general, of course, all other non-round shapes for angularly accurate fixation of the individual functional elements 4 to each other are conceivable.
  • the functional device 3 By integrating a plurality of functional elements 4 in a common functional device 3, only the fixing of a functional device 3 is required, which is significantly simpler than the previously required fixing of the individual functional elements 4.
  • the functional device 3 according to the invention can also achieve weight savings. Because the individual functional elements 4 can be designed to reduce weight. Also, by a special arrangement of the individual functional elements 4, an imbalance compensation in particular, for example, to a pulley 13 (see. FIGS. 2 and 3 ) can be achieved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Laser Beam Processing (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
EP13193546.2A 2012-12-19 2013-11-19 Nockenwelle Not-in-force EP2746545B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012223811.5A DE102012223811A1 (de) 2012-12-19 2012-12-19 Nockenwelle

Publications (2)

Publication Number Publication Date
EP2746545A1 EP2746545A1 (de) 2014-06-25
EP2746545B1 true EP2746545B1 (de) 2019-08-14

Family

ID=49626829

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13193546.2A Not-in-force EP2746545B1 (de) 2012-12-19 2013-11-19 Nockenwelle

Country Status (5)

Country Link
US (1) US20140165935A1 (ja)
EP (1) EP2746545B1 (ja)
JP (1) JP2014122627A (ja)
CN (1) CN103967548A (ja)
DE (1) DE102012223811A1 (ja)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011120815A1 (de) * 2011-12-10 2013-06-13 Volkswagen Aktiengesellschaft Verstellbarer Nockenwellenantrieb
DE102012223811A1 (de) 2012-12-19 2014-06-26 Mahle International Gmbh Nockenwelle
DE102015113520A1 (de) * 2015-08-17 2017-02-23 Thyssenkrupp Presta Teccenter Ag Modulbaugruppe
DE102016217024A1 (de) * 2016-09-07 2018-03-08 Mahle International Gmbh Herstellungsverfahren einer Nockenwelle
US20190154129A1 (en) * 2017-11-21 2019-05-23 Medela Holding Ag Integrated cam shaft assembly
DE102021208281A1 (de) 2021-07-30 2023-02-02 Mahle International Gmbh Kombiniertes Stopfen-Geberrad für eine Nockenwelle

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3301749A1 (de) 1983-01-20 1984-08-09 Mahle Gmbh, 7000 Stuttgart Nockenwelle fuer verbrennungsmotoren
DE3641129C1 (de) 1986-12-02 1987-07-30 Daimler Benz Ag Vorrichtung zur Lagerung von zwei Nockenwellen im Zylinderkopf einer mehrzylindrigen Reihenbrennkraftmaschine
WO2002096596A1 (de) 2001-05-29 2002-12-05 Reiner Dorner Verfahren zur drehfesten befestigung von triebteilen auf wellen
DE10331089A1 (de) 2003-07-09 2005-02-24 Volkswagen Ag Zylinderkopfhaube und Verfahren zur Herstellung
DE102004049272A1 (de) 2004-10-09 2006-04-13 Daimlerchrysler Ag Verfahren zur Herstellung einer gebauten Nockenwelle
DE102007049072A1 (de) 2007-10-12 2009-04-16 Schaeffler Kg Phasenversteller für eine Brennkraftmaschine mit einer Oldham-Kupplung
DE102007056638A1 (de) 2007-11-24 2009-05-28 Usk Karl Utz Sondermaschinen Gmbh Verfahren und Vorrichtung zur Montage von einem Verbund, insbesondere aus einer Nockenwelle und einem Gehäuse
DE102007063254A1 (de) 2007-12-31 2009-07-02 Mahle International Gmbh Zylinderkopfhaube
DE102010008003A1 (de) 2010-02-15 2011-08-18 Schaeffler Technologies GmbH & Co. KG, 91074 Zellenrad
EP2372119A1 (de) 2010-03-31 2011-10-05 Schwäbische Hüttenwerke Automotive GmbH Kombinierte Kettenrad-Stator-Einheit
DE102010024721A1 (de) 2010-06-23 2012-03-29 Mahle International Gmbh Nocken und zugehörige Nockenwelle
DE102011001499B3 (de) 2011-03-23 2012-08-30 Usk Karl Utz Sondermaschinen Gmbh Verfahren und Vorrichtung zur Herstellung einer Schrumpfverbindung zwischen wenigstens zwei Bauteilen
EP2746545A1 (de) 2012-12-19 2014-06-25 MAHLE International GmbH Nockenwelle

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS612970A (ja) * 1984-06-18 1986-01-08 Ngk Insulators Ltd エンジン用カムシヤフト
EP0486876B2 (en) * 1990-11-19 1998-12-30 NIPPON PISTON RING CO., Ltd. Machine element with at least a fitting member pressure-fitted on a shaft
US5293847A (en) * 1993-02-16 1994-03-15 Hoffman Ronald J Powdered metal camshaft assembly
DE20221858U1 (de) * 2002-12-21 2008-09-04 Schaeffler Kg Brennkraftmaschine mit einer Vorrichtung zur hydraulischen Drehwinkelverstellung ihrer Nockenwelle gegenüber ihrer Kurbelwelle sowie mit einer Vakuumpumpe für einen Servoverbraucher, insbesondere für einen Bremskraftverstärker
US7387097B2 (en) * 2004-10-08 2008-06-17 Ina-Schaeffler Jg INA-schaeffler KG, industriestrasse 1-3, 91074 herzogenaurach ANR 12 88 48 20
JP4161277B2 (ja) * 2005-03-11 2008-10-08 アイシン精機株式会社 弁開閉時期制御装置
DE202005005585U1 (de) * 2005-04-07 2005-06-16 Thyssenkrupp Automotive Ag Mehrteiliger Multifunktionsnocken
US7234428B2 (en) * 2005-07-28 2007-06-26 Briggs And Stratton Corporation Cam shaft assembly for an engine
DE102007018920B3 (de) * 2007-04-19 2008-08-28 Thyssenkrupp Presta Ag Antriebswelle
CN201050589Y (zh) * 2007-06-22 2008-04-23 中国第一汽车集团公司无锡柴油机厂 一种带信号盘的凸轮轴驱动齿轮
DE102008017688A1 (de) * 2008-04-08 2009-10-15 Schaeffler Kg Vorrichtung zur variablen Einstellung der Steuerzeiten von Gaswechselventilen einer Brennkraftmaschine
EP2194240A1 (en) * 2008-12-05 2010-06-09 Perkins Engines Company Limited Camshaft speed sensor target
CN201444043U (zh) * 2009-05-15 2010-04-28 东风朝阳柴油机有限责任公司 凸轮轴相位信号的测量装置
DE102009042227A1 (de) * 2009-09-18 2011-03-31 Schaeffler Technologies Gmbh & Co. Kg Vorrichtung zur Veränderung der relativen Winkellage einer Nockenwelle gegenüber einer Kurbelwelle einer Brennkraftmaschine
CN201568090U (zh) * 2009-10-21 2010-09-01 浙江吉利汽车有限公司 驱动齿轮后置的发动机凸轮轴
DE102009059712A1 (de) * 2009-12-18 2011-09-22 Thyssenkrupp Presta Teccenter Ag Nockeneinheit für eine gebaute Nockenwelle
US8272359B2 (en) * 2010-03-10 2012-09-25 GM Global Technology Operations LLC Camshaft including weight reducing features and method of forming

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3301749A1 (de) 1983-01-20 1984-08-09 Mahle Gmbh, 7000 Stuttgart Nockenwelle fuer verbrennungsmotoren
DE3641129C1 (de) 1986-12-02 1987-07-30 Daimler Benz Ag Vorrichtung zur Lagerung von zwei Nockenwellen im Zylinderkopf einer mehrzylindrigen Reihenbrennkraftmaschine
WO2002096596A1 (de) 2001-05-29 2002-12-05 Reiner Dorner Verfahren zur drehfesten befestigung von triebteilen auf wellen
DE10331089A1 (de) 2003-07-09 2005-02-24 Volkswagen Ag Zylinderkopfhaube und Verfahren zur Herstellung
DE102004049272A1 (de) 2004-10-09 2006-04-13 Daimlerchrysler Ag Verfahren zur Herstellung einer gebauten Nockenwelle
DE102007049072A1 (de) 2007-10-12 2009-04-16 Schaeffler Kg Phasenversteller für eine Brennkraftmaschine mit einer Oldham-Kupplung
DE102007056638A1 (de) 2007-11-24 2009-05-28 Usk Karl Utz Sondermaschinen Gmbh Verfahren und Vorrichtung zur Montage von einem Verbund, insbesondere aus einer Nockenwelle und einem Gehäuse
DE102007063254A1 (de) 2007-12-31 2009-07-02 Mahle International Gmbh Zylinderkopfhaube
DE102010008003A1 (de) 2010-02-15 2011-08-18 Schaeffler Technologies GmbH & Co. KG, 91074 Zellenrad
EP2372119A1 (de) 2010-03-31 2011-10-05 Schwäbische Hüttenwerke Automotive GmbH Kombinierte Kettenrad-Stator-Einheit
DE102010024721A1 (de) 2010-06-23 2012-03-29 Mahle International Gmbh Nocken und zugehörige Nockenwelle
DE102011001499B3 (de) 2011-03-23 2012-08-30 Usk Karl Utz Sondermaschinen Gmbh Verfahren und Vorrichtung zur Herstellung einer Schrumpfverbindung zwischen wenigstens zwei Bauteilen
EP2746545A1 (de) 2012-12-19 2014-06-25 MAHLE International GmbH Nockenwelle

Also Published As

Publication number Publication date
CN103967548A (zh) 2014-08-06
DE102012223811A1 (de) 2014-06-26
EP2746545A1 (de) 2014-06-25
US20140165935A1 (en) 2014-06-19
JP2014122627A (ja) 2014-07-03

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