EP1696106A1 - Système d'arbre, en particulier arbre à cames de moteur pour véhicule - Google Patents

Système d'arbre, en particulier arbre à cames de moteur pour véhicule Download PDF

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Publication number
EP1696106A1
EP1696106A1 EP05111937A EP05111937A EP1696106A1 EP 1696106 A1 EP1696106 A1 EP 1696106A1 EP 05111937 A EP05111937 A EP 05111937A EP 05111937 A EP05111937 A EP 05111937A EP 1696106 A1 EP1696106 A1 EP 1696106A1
Authority
EP
European Patent Office
Prior art keywords
sleeve
shaft
inner shaft
core
cam
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
EP05111937A
Other languages
German (de)
English (en)
Other versions
EP1696106B1 (fr
Inventor
Martin Lechner
Falk Schneider
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 EP1696106A1 publication Critical patent/EP1696106A1/fr
Application granted granted Critical
Publication of EP1696106B1 publication Critical patent/EP1696106B1/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
    • 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
    • F01L1/02—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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49293—Camshaft making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2101—Cams
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2101—Cams
    • Y10T74/2102—Adjustable
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2101—Cams
    • Y10T74/2107—Follower

Definitions

  • the invention relates to a shaft device, in particular a camshaft of motor vehicle engines, according to the preamble of patent claim 1.
  • Such a wave device is known from EP 1 362 986 A1.
  • the there widening the fastening sleeve core detects only that portion of the mounting sleeve in which it lies within the range of the inner shaft. Not captured by the core are the end portions of the sleeve which lie within the cam connected to the inner shaft and the outer shaft.
  • This sleeve widening core existing connection means between the inner shaft and cam is to have a way to secure the connecting element in such a way in the inner shaft, that by the fastening operation on the inner shaft no These bending forces can be exerted.
  • the sleeve widening this sleeve in the region of the inner shaft can be pressed in with axial support of the sleeve, without thereby exerting radial forces on the inner shaft.
  • the mounting sleeve is mounted via a clearance in the inner shaft, after its installation in the cam area already overlapping against the cam material before, in such a degree that thereby already a seperate, solid compound given is.
  • the subsequent pressing of the core is used in the known device exclusively to expand the sleeve in the region of the inner shaft to achieve a tight fit of this inner shaft of this opposite, that is, a play-free state z. B. press fit with coverage in this area.
  • the invention is based on the following general thoughts.
  • the fastening device for connecting a cam on the inner shaft and the mounting holes in the cam and the inner shaft are coordinated so that even with minor misalignment between the holes the cam on the one hand and the inner shaft on the other hand, a powerless insertion of the mounting sleeve is ensured in the inner shaft with the highest possible safety even with a relatively long camshaft over the length of several cams to be fastened.
  • the desired safety after a powerless introduction of the mounting sleeve in the inner shaft is already achieved in that the sleeve is not yet getting a ready-to-use interference fit in the cam when introduced within this cam.
  • the risk of jamming of the fastening sleeve during introduction into the inner shaft is already considerably reduced.
  • the core extends over the entire length of the sleeve, its positional fixing within the sleeve is extremely easy to manufacture. Namely, if the core is flush with the sleeve with respect to its length, it can simply be pressed into the position flush with the sleeve.
  • the sleeve and the mounting holes in the inner shaft and outer shaft are advantageously matched to one another such that in the region of the inner shaft, a larger sleeve expansion given at the finished shaft means than in the areas radially outside the inner shaft.
  • the differences in the sleeve widening along its length can be aided by the shape of the core, for example by having conically narrowing end portions within the cam to be fastened.
  • a particularly advantageous embodiment of the invention is that the sleeve, in particular in that region in which it forms a press fit within the inner shaft, has wall openings through which the elasticity of the sleeve in this area, if there is still no core pressed, relatively high can be.
  • the advantage of such elasticity is that even with minor misalignment of the holes in a cam and the inner shaft when inserting the sleeve in the inner shaft no high clamping forces through which the shaft can be bent may occur.
  • the wall openings in question are in particular designed as axially parallel to the sleeve extending slots.
  • a special form with regard to the wall breakthroughs in the sleeve according to the invention is a sleeve which has been slit over its entire length.
  • Such a longitudinally slotted sleeve is particularly elastic during assembly and thus mounted virtually free of forces, in particular even with minor misalignment of participating in a connection holes.
  • a cam 3 is rotatably mounted on the outer shaft 2.
  • the illustrated cam 3 is the axial, annular connection region of a so far not graphically illustrated double cam.
  • the fastening device 5 consists of a longitudinally slotted sleeve 6, that is, a sleeve 6 with a continuous longitudinal slot 8, and a pressed-in in the sleeve 6 core 7.
  • the core 7 is practically a cylindrical pin.
  • the ends of the core 7 each taper slightly conical. The conical taper is so small that it is not visible in the drawing.
  • the length of the core 7 is designed so that it extends over the entire length of the sleeve 6.
  • the tight fit between the sleeve 6 and on the one hand the inner shaft 1 and on the other hand the cam 3 is effected by an elastic expansion of the sleeve material 6 through the overlapping in this sleeve core 7.
  • the core 7 is pressed into the sleeve 6 in such a way that occurring radial forces are intercepted directly on the sleeve 6, so that in particular no radial forces on the inner shaft 1 in the introduction and activation of the holding properties of this device can act on the inner shaft 1.
EP05111937A 2005-01-19 2005-12-12 Système d'arbre, en particulier arbre à cames de moteur pour véhicule Expired - Fee Related EP1696106B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005002395A DE102005002395A1 (de) 2005-01-19 2005-01-19 Welleneinrichtung, insbesondere Nockenwelle von Kraftfahrzeugmotoren

Publications (2)

Publication Number Publication Date
EP1696106A1 true EP1696106A1 (fr) 2006-08-30
EP1696106B1 EP1696106B1 (fr) 2007-02-28

Family

ID=36499092

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05111937A Expired - Fee Related EP1696106B1 (fr) 2005-01-19 2005-12-12 Système d'arbre, en particulier arbre à cames de moteur pour véhicule

Country Status (3)

Country Link
US (1) US7284521B2 (fr)
EP (1) EP1696106B1 (fr)
DE (2) DE102005002395A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005004976A1 (de) * 2005-02-04 2006-08-10 Mahle International Gmbh Nockenwelle mit gegeneinander verdrehbaren Nocken für insbesondere Kraftfahrzeugmotoren
EP2171222B1 (fr) * 2007-07-02 2017-11-29 BorgWarner Inc. Came concentrique avec clapets anti-retour dans la bobine pour un déphaseur
US8025035B2 (en) * 2009-01-09 2011-09-27 Ford Global Technologies, Llc Mechanical variable camshaft timing device
US8042504B2 (en) * 2009-01-09 2011-10-25 Ford Global Tecnologies, Llc Adjusting valve timing to deactivate engine cylinders for variable displacement operation
US9086011B2 (en) 2010-01-22 2015-07-21 Borgwarner Inc. Directly communicated turbocharger
CN108138608A (zh) 2015-08-05 2018-06-08 伊顿智能动力有限公司 用于内部废气再循环的切换摇臂
DE102015215292A1 (de) * 2015-08-11 2017-02-16 Thyssenkrupp Ag Verfahren und Vorrichtung zur Montage einer verstellbaren Nockenwelle
WO2018068041A1 (fr) 2016-10-07 2018-04-12 Eaton Corporation Culbuteur à trois rouleaux ayant des rouleaux en porte-à-faux et un ressort à mouvement perdu sur une soupape ou sur un pivot de culbuteur
CN216142793U (zh) 2018-02-23 2022-03-29 伊顿智能动力有限公司 切换滚子指状随动件
DE102018205982A1 (de) * 2018-04-19 2019-10-24 Mahle International Gmbh Lagerrahmen oder Zylinderkopfhaube einer Brennkraftmaschine

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3943426C1 (fr) * 1989-12-22 1991-04-11 Gkn Automotive Ag, 5200 Siegburg, De
US5235939A (en) * 1992-11-05 1993-08-17 Ford Motor Company Automotive engine torsional pulse enhancer
EP0643200A1 (fr) * 1993-09-09 1995-03-15 Regie Nationale Des Usines Renault Arbre à cames pour moteur à combustion interne
DE4416505A1 (de) * 1994-05-10 1995-11-16 Bayerische Motoren Werke Ag Nockenwelle mit verdrehbaren Nocken
US5664463A (en) * 1993-03-03 1997-09-09 Amborn; Peter Camshaft assembly with shaft elements positioned one inside the other and method of producing same
DE19757504A1 (de) * 1997-12-23 1999-07-01 Daimler Chrysler Ag Gebaute Nockenwelle für eine Brennkraftmaschine
EP1362986A1 (fr) * 2001-05-15 2003-11-19 Mechadyne plc Arbre à cames à calage variable

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS609803A (ja) 1983-06-30 1985-01-18 Nippon Piston Ring Co Ltd 組立式カムシヤフトの製造方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3943426C1 (fr) * 1989-12-22 1991-04-11 Gkn Automotive Ag, 5200 Siegburg, De
US5235939A (en) * 1992-11-05 1993-08-17 Ford Motor Company Automotive engine torsional pulse enhancer
US5664463A (en) * 1993-03-03 1997-09-09 Amborn; Peter Camshaft assembly with shaft elements positioned one inside the other and method of producing same
EP0643200A1 (fr) * 1993-09-09 1995-03-15 Regie Nationale Des Usines Renault Arbre à cames pour moteur à combustion interne
DE4416505A1 (de) * 1994-05-10 1995-11-16 Bayerische Motoren Werke Ag Nockenwelle mit verdrehbaren Nocken
DE19757504A1 (de) * 1997-12-23 1999-07-01 Daimler Chrysler Ag Gebaute Nockenwelle für eine Brennkraftmaschine
EP1362986A1 (fr) * 2001-05-15 2003-11-19 Mechadyne plc Arbre à cames à calage variable

Also Published As

Publication number Publication date
DE102005002395A1 (de) 2006-07-27
US7284521B2 (en) 2007-10-23
EP1696106B1 (fr) 2007-02-28
US20060157008A1 (en) 2006-07-20
DE502005000426D1 (de) 2007-04-12

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