EP1803904A2 - Arbre à cames - Google Patents

Arbre à cames Download PDF

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Publication number
EP1803904A2
EP1803904A2 EP06125818A EP06125818A EP1803904A2 EP 1803904 A2 EP1803904 A2 EP 1803904A2 EP 06125818 A EP06125818 A EP 06125818A EP 06125818 A EP06125818 A EP 06125818A EP 1803904 A2 EP1803904 A2 EP 1803904A2
Authority
EP
European Patent Office
Prior art keywords
shafts
camshaft
shaft
drive
swash plate
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
EP06125818A
Other languages
German (de)
English (en)
Other versions
EP1803904B1 (fr
EP1803904A3 (fr
Inventor
Martin Lechner
Oliver Fritz
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
Application filed by Mahle International GmbH filed Critical Mahle International GmbH
Publication of EP1803904A2 publication Critical patent/EP1803904A2/fr
Publication of EP1803904A3 publication Critical patent/EP1803904A3/fr
Application granted granted Critical
Publication of EP1803904B1 publication Critical patent/EP1803904B1/fr
Expired - Fee Related 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
    • F01L1/34—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
    • 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
    • F01L1/34413—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 composite camshafts, e.g. with cams being able to move relative to the camshaft
    • 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
    • F01L1/352—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 bevel or epicyclic 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
    • F01L1/356—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 making the angular relationship oscillate, e.g. non-homokinetic drive
    • 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
    • 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
    • F01L2001/34486—Location and number of the means for changing the angular relationship
    • F01L2001/34493—Dual independent phasing system [DIPS]

Definitions

  • the invention relates to a camshaft for in particular an actuation of the gas exchange valves of an internal combustion engine according to the preamble of patent claim 1.
  • Such a camshaft is known, for example EP 0 582 846 B1 and US 6,725,817 , In these camshafts, the two actuators are hydraulically actuated.
  • Such hydraulic drives operate on the one hand relatively inertially and, on the other hand, are temperature-dependent with respect to their control values. In addition, larger adjustment angles are difficult and not achievable with the aforementioned special drive designs.
  • the invention is concerned with the problem of providing a speedy, with respect to their positioning accuracy independent actuators in a generic camshaft with which in particular practically arbitrarily large adjustment angle are easily possible.
  • This problem is solved by the application of a for adjusting the camshaft itself already DE 102 22 475 A1 known swash plate drive in a special embodiment according to the characterizing features of patent claim 1.
  • the invention is based on the general idea to convert a known in itself for the rotational angle adjustment of a one-piece camshaft swashplate actuator in a simple manner in a double actuator, with the constructively simple and safe way arbitrary rotational angle adjustments of two coaxial nested waves can be achieved, the form a common camshaft, in each case connected to the one and the other of the two shafts cam on the one hand against each other navwinkelver Issue, further on the other hand at the same time also a common rotational angle adjustment of both shafts is possible.
  • the drivers of both swashplates engage in a common ring formed on one of the two shaft ends.
  • the drivers are displaceable in the direction of the common axis of the two shafts within the ring.
  • both swash plate bearings rotate about a common axis of both shafts.
  • both actuators comprise coaxial with one another, acting on the swash plate bearing drive shafts.
  • the inventive device with two swashplates comprehensive actuators allows any appropriate adjustments of the two shafts against each other and / or together with respect to the main drive with a corresponding electronic control device.
  • a particular advantage of an actuator with a swash plate is to be able to achieve very high gear ratios in a simple manner.
  • the basic principle of a swash plate drive in the form of a gear transmission is that the 2ähneterrorism between the sprocket of the swash plate and the ring gear in which the swash plate meshes, only by a small number of teeth, which may be one in the extreme case, different.
  • Such swash plate gears are known per se in the prior art, which is why their operating principle and structural design need not be explained in detail here. Further information regarding a camshaft swash plate adjustment drive may, for example, already mentioned above DE 102 22 475 A1 be removed.
  • a camshaft consists of coaxially superimposed shafts, namely a first shaft 1 as an inner shaft and a second shaft 2 as an outer shaft. Of these two shafts 1, 2, only the sections are shown at one end.
  • the consisting of the two shafts 1 and 2 camshaft has first cam, which are fixedly connected to the first shaft and second cam which are connected to the second shaft, so that these cams can be rotated by a rotation angle adjustment of the two shafts 1, 2 against each other.
  • the cams and their attachment to the two shafts 1, 2 are not shown in the drawing.
  • the two shafts 1, 2 are each connected to a separately operable actuator namely the first shaft 1 with a first actuator 3 and the second shaft 2 with a second actuator 4. Both actuators 3, 4 are designed as swash plate drives.
  • a diameter-moderately stepped ring 5 is fixedly connected, while the fixed connection is made in the small-diameter ring section, while the larger-diameter section encloses the two actuators 3, 4, of which this section is one below is more detailed component.
  • Each of the two actuators 3, 4 consists of the following components.
  • a swash plate 3 ', 4' rotatably supports on a swash plate bearing 3 ''; 4 ''.
  • the swash plate bearings 3 ''; 4 are each driven via an actuating drive shaft, namely a first and second actuating drive shaft 3 '' ', 4' ''.
  • the first drive shaft 3 '' ' coaxially supports within the second drive shaft 4' '' designed as a hollow shaft.
  • the first swash plate bearing 3 "rotatably supports on a fixedly connected to the first shaft 1 first axis 6. Fixedly connected to the first shaft 1 is an annular disc. 7
  • drivers 3 IV ; 4 IV provided, which protrude radially outward.
  • These drivers 3 IV ; 4 IV engage in a longitudinal groove 8 in the inner periphery of the ring 5 in its large diameter portion, said longitudinal groove parallel to the common axis of the first and second shaft 1, 2 extends.
  • a corresponding number of longitudinal grooves 8 is provided in your radially outer side region.
  • the two swash plates 3 ', 4' each with a ring gear namely a first and second ring gear 3 V ; 4 V provided.
  • These sprockets 3 V ; 4 V engage in each assigned sprockets.
  • In the first actuator 3, such an associated sprocket 7 ' is located on the annular disk 7.
  • the second ring gear 4 V of the second swash plate 4 ' meshes in a ring gear 9' of an annular sleeve 9.
  • the annular sleeve 9 is fixedly connected to a gear 10 of a camshaft main drive.
  • This main drive has as a drive source, a crankshaft of an internal combustion engine, of which the gear 10 is driven by a drive chain, not shown.
  • the second swash plate bearing 4 '' is rotatably mounted.
  • the two adjusting drive shafts 3 '' 'and 4' '' are part of two electric servomotors, which are not shown in the drawing.
  • the adjustable camshaft drive works as follows.
  • both shafts 1, 2 are rotationally adjusted with respect to the gearwheel 10 at the same rotational angle.
  • the first actuator 3 For a mutual adjustment of the shafts 1, 2, the first actuator 3 provides.
  • the shafts 1 and 2 can be rotational angle adjusted in a simple manner by a corresponding control of the actuators 3, 4 against each other and together with respect to the engaging via the gear 10 main drive.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
EP06125818A 2005-12-21 2006-12-11 Arbre à cames Expired - Fee Related EP1803904B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005061187A DE102005061187A1 (de) 2005-12-21 2005-12-21 Nockenwelle

Publications (3)

Publication Number Publication Date
EP1803904A2 true EP1803904A2 (fr) 2007-07-04
EP1803904A3 EP1803904A3 (fr) 2009-04-08
EP1803904B1 EP1803904B1 (fr) 2010-04-07

Family

ID=38033326

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06125818A Expired - Fee Related EP1803904B1 (fr) 2005-12-21 2006-12-11 Arbre à cames

Country Status (3)

Country Link
US (1) US7421992B2 (fr)
EP (1) EP1803904B1 (fr)
DE (2) DE102005061187A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011010241A1 (fr) * 2009-07-23 2011-01-27 Mechadyne Plc Ensemble de mise en phase pour moteur à combustion interne
WO2011042391A1 (fr) * 2009-10-05 2011-04-14 Schaeffler Technologies Gmbh & Co. Kg Agencement d'arbre à cames
KR20120089281A (ko) * 2009-10-05 2012-08-09 섀플러 테크놀로지스 아게 운트 코. 카게 캠 샤프트 장치
WO2013053421A1 (fr) * 2011-10-15 2013-04-18 Volkswagen Aktiengesellschaft Commande de soupapes pour moteur à combustion interne
WO2013171321A1 (fr) 2012-05-18 2013-11-21 Schaeffler Technologies AG & Co. KG Ensemble d'arbres à cames
WO2013171322A1 (fr) 2012-05-18 2013-11-21 Schaeffler Technologies AG & Co. KG Unité d'arbres à cames

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009067789A1 (fr) * 2007-11-26 2009-06-04 Magna Powertrain Inc. Arbre à cames concentrique avec entraînement de phase électrique
DE102011006691A1 (de) * 2011-04-04 2012-10-04 Schaeffler Technologies Gmbh & Co. Kg Nockenwellenversteller
DE102021114162B4 (de) 2021-06-01 2022-12-08 Schaeffler Technologies AG & Co. KG Elektromechanischer Nockenwellenversteller

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0582846A1 (fr) * 1992-08-13 1994-02-16 Bayerische Motoren Werke Aktiengesellschaft Moteur à combustion interne à pistons avec deux soupapes de distribution des gaz par cylindre
DE19526888A1 (de) * 1995-04-21 1997-01-23 Audi Ag Vorrichtung zum diskreten Verstellen der Phasenlage zumindest zweier Nockenwellen
US20050235939A1 (en) * 2004-04-24 2005-10-27 Aft Atlas Fahrzeugtechnik Gmbh Device for adjusting the timing of valves and internal combustion engine having such a device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4294218A (en) * 1978-10-26 1981-10-13 Caterpillar Tractor Co. Differential timing altering mechanism for fuel injectors
DE10038354C2 (de) * 2000-08-05 2003-03-20 Atlas Fahrzeugtechnik Gmbh Steuereinrichtung zum Verstellen des Drehwinkels einer Nockenwelle
GB2369175A (en) * 2000-11-18 2002-05-22 Mechadyne Plc Variable phase coupling
DE10222475A1 (de) * 2002-05-22 2003-12-04 Atlas Fahrzeugtechnik Gmbh Getriebe mit zwei ineinander angeordneten Drehscheiben, die durch eine Taumelscheibe miteinander verbunden sind

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0582846A1 (fr) * 1992-08-13 1994-02-16 Bayerische Motoren Werke Aktiengesellschaft Moteur à combustion interne à pistons avec deux soupapes de distribution des gaz par cylindre
DE19526888A1 (de) * 1995-04-21 1997-01-23 Audi Ag Vorrichtung zum diskreten Verstellen der Phasenlage zumindest zweier Nockenwellen
US20050235939A1 (en) * 2004-04-24 2005-10-27 Aft Atlas Fahrzeugtechnik Gmbh Device for adjusting the timing of valves and internal combustion engine having such a device

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011010241A1 (fr) * 2009-07-23 2011-01-27 Mechadyne Plc Ensemble de mise en phase pour moteur à combustion interne
CN102439265A (zh) * 2009-07-23 2012-05-02 米查戴尼股份有限公司 用于内燃机的移相器组件
CN102439265B (zh) * 2009-07-23 2015-02-11 麦加戴恩国际有限公司 用于内燃机的移相器组件
WO2011042391A1 (fr) * 2009-10-05 2011-04-14 Schaeffler Technologies Gmbh & Co. Kg Agencement d'arbre à cames
KR20120089280A (ko) * 2009-10-05 2012-08-09 섀플러 테크놀로지스 아게 운트 코. 카게 캠 샤프트 장치
KR20120089281A (ko) * 2009-10-05 2012-08-09 섀플러 테크놀로지스 아게 운트 코. 카게 캠 샤프트 장치
US8627795B2 (en) 2009-10-05 2014-01-14 Schaeffler Technologies AG & Co. KG Camshaft arrangement
WO2013053421A1 (fr) * 2011-10-15 2013-04-18 Volkswagen Aktiengesellschaft Commande de soupapes pour moteur à combustion interne
WO2013171321A1 (fr) 2012-05-18 2013-11-21 Schaeffler Technologies AG & Co. KG Ensemble d'arbres à cames
WO2013171322A1 (fr) 2012-05-18 2013-11-21 Schaeffler Technologies AG & Co. KG Unité d'arbres à cames
US9638306B2 (en) 2012-05-18 2017-05-02 Schaeffler Technologies AG & Co. KG Camshaft unit

Also Published As

Publication number Publication date
DE102005061187A1 (de) 2007-06-28
EP1803904B1 (fr) 2010-04-07
DE502006006633D1 (de) 2010-05-20
EP1803904A3 (fr) 2009-04-08
US20070137598A1 (en) 2007-06-21
US7421992B2 (en) 2008-09-09

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