EP1593880A1 - Verstellwelle eines hubvariablen Ventiltriebs - Google Patents
Verstellwelle eines hubvariablen Ventiltriebs Download PDFInfo
- Publication number
- EP1593880A1 EP1593880A1 EP05007185A EP05007185A EP1593880A1 EP 1593880 A1 EP1593880 A1 EP 1593880A1 EP 05007185 A EP05007185 A EP 05007185A EP 05007185 A EP05007185 A EP 05007185A EP 1593880 A1 EP1593880 A1 EP 1593880A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shaft
- adjusting shaft
- drive
- adjusting
- drive component
- 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
Links
- 238000002485 combustion reaction Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 7
- 125000006850 spacer group Chemical group 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Images
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
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
Definitions
- the present invention relates to an adjusting shaft of a variable-stroke valve drive an internal combustion engine according to the preamble of claim 1.
- the present invention now provides an adjusting shaft of a variable-stroke valve drive an internal combustion engine, wherein the adjusting shaft is an elongated Has shaft body, which is in operative connection with a pivot lever Eccentric cam and a drive component for the rotary drive of the adjusting shaft has, wherein according to the invention it is provided that the shaft body, the eccentric cam and the drive member are manufactured separately from each other and the eccentric cams and the drive member for forming the adjusting shaft on the shaft body arranged according to their respective production.
- the shaft body of an at least partially pipe-shaped hollow body is formed, compared with the known wave a significant cost advantage in the production of adjusting shaft according to the invention provides.
- a solid shaft are used in the form For example, one already finished in the field of bearings Wave.
- the drive component is generally a displacement an output component of a drive in a rotational movement of the adjusting converting Component.
- As drive for example, an electric motor or a hydraulic Drive are used, whose output component is displaced.
- the output member is engaged with the drive member on the shaft body and can thus rotate the adjusting shaft.
- This may be the case with the drive component for example, a spur gear of a spur gear or a Schneckenradlace a worm gear or a rack and pinion or a Crankshaft act.
- the eccentric cam and / or the drive component in the Shape for example, a helical gear or worm wheel by means of a punching operation are manufactured and after their production on the hollow basic body be put on.
- the adjustment shaft provided according to the invention has to their bearings on shaft bearings, those of rolling bearings or plain bearings or both Bearing types are formed, which arranged by means of on the base body Eccentric cam supporting spacers are positioned on the shaft body can, so that also a significantly cheaper positioning of the Bearing on the adjusting shaft is possible.
- the spacers force fit for example in the form of a press fit to the shaft body.
- the drive component provided for the rotary drive of the known adjusting shaft is for manufacturing reasons in this known adjusting largely arranged in the region of the axial longitudinal center and therefore leads to a problem the so-called packaging, as in this area often cylinder head bolts are provided on the internal combustion engine and thus the problem of a restriction the clearance of the cylinder head bolts consists.
- the eccentric cam and / or the Drive component on the shaft body by means of a non-rotatable shaft / hub connection be determined, provided for this purpose, for example, a knurling can be.
- the adjusting shaft according to the invention can over the already described above Drive component by means of a standing in operative connection electric motor be driven for pivoting or pivoting movement, wherein the drive due to the respective end positions of the eccentric cam relative to the above-described Transmission mechanism has to be done so that a rotation of the Adjusting be avoided over a predetermined rotation angle range addition got to.
- the drive component formed with at least one rotation angle limit stop is, so that the drive component in addition to the function of the drive of the adjusting also performs the function of limiting the rotation angle range of the adjusting.
- the invention is also characterized by the fact that the shaft body and / or the eccentric cam and / or the drive component of different Materials, according to the respective requirement profiles, manufactured can not be the case that the entire wave from one, the most heavily loaded component selected according to uniform Material must be made.
- adjusting shaft it is one for a four-cylinder inline engine with each two intake valves provided adjusting shaft.
- the adjusting shaft 1 has an elongated Basic body 2, of a simple and inexpensive to produce is hollow inside and thus tubular piece-shaped continuous tubular body is formed, at the then after the production of the other parts of the adjusting this subsequently can be put on. It is also instead of the tube body shown possible to use a solid shaft.
- the adjusting shaft according to the illustrated embodiment a total of eight eccentric cam 3, the For example, can be manufactured as cost-effectively produced stampings and between each intended for storage of the adjusting Needle roller bearings 4 are arranged.
- the adjusting shaft 1 of the invention has a drive member 5, the on a substantially front end portion of the adjusting shaft 1 is arranged and thus the above-described problem of clearance of the cylinder head bolts solves.
- the drive component is a, a pitch circle from about 180 ° enclosing component with an external toothing for engagement in the output worm of an electric motor, not shown, with which the Adjusting shaft 1 can be rotated so that the eccentric cam. 3 act on the transmission mechanism, not shown, so that a Rotation of the intake camshaft to open the intake valves of the internal combustion engine with variable stroke leads.
- To a rotation of the adjusting shaft. 1 To avoid beyond the constructive angle of rotation range, has the drive member 5 two rotation angle limiting stops 6, in a not shown in detail component can intervene to limit the rotation angle.
- the invention is characterized in that the adjusting shaft according to the invention can be made much cheaper than the one from a one-piece forged component manufactured known adjusting shaft. Furthermore can form the individual components of the adjusting shaft according to the invention Components made of different application-specific ones There are therefore materials that are optimized for the respective component-specific load can be. It is particularly possible, the tubular piece-shaped shaft body 2 of a simple material to form while the mechanical higher loaded eccentric cam 3 from a corresponding to monten Material are manufactured. It is not in the adjusting shaft according to the invention more necessary to subject them to a heat treatment after their manufacture, so that the problem of any thermal distortion of the elongated Wave is avoided.
- the adjusting shaft can due to the closed bearings 4 in contrast to the split bearings used in the known shaft be stored precisely and in addition, the one have undivided Bearing outer bearing bearing increased load capacity.
- the shaft according to the invention has the advantage of being complete can be finished and pre-assembled and so on the assembly line in the cylinder head of the internal combustion engine can be used without the Band further steps are required.
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)
Abstract
Description
Claims (9)
- Verstellwelle eines hubvariablen Ventiltriebs einer Brennkraftmaschine, mit einem langgestreckten Wellenkörper (2), der mit einem Schwenkhebel in Wirkverbindung stehende Exzenternocken (3) und ein Antriebsbauteil (5) zum Drehantrieb der Verstellwelle (1) besitzt, dadurch gekennzeichnet, dass der Wellenkörper (2), die Exzenternocken (3) und das Antriebsbauteil (5) getrennt voneinander gefertigt und die Exzenternocken (3) sowie das Antriebsbauteil (5) zur Bildung der Verstellwelle (1) am Wellenkörper (2) angeordnet sind.
- Verstellwelle nach Anspruch 1, dadurch gekennzeichnet, dass der Wellenkörper (2) von einem zumindest abschnittsweise rohrstückförmigen hohlen Grundkörper (2) gebildet ist.
- Verstellwelle nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Exzenternocken (3) und/oder das Antriebsbauteil (5) mittels Stanzen gefertigt sind.
- Verstellwelle nach einem der vorstehenden Ansprüche, gekennzeichnet durch Wellenlager (4), die von insbesondere Wälzlagern und/oder Gleitlagern gebildet sind, die mittels sich am Wellenkörper (2) abstützenden Distanzhaltern am Wellenkörper (2) positionierbar sind.
- Verstellwelle nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass das Antriebsbauteil (5) im Bereich eines stirnseitigen Endes des Wellenkörpers (2) angeordnet ist.
- Verstellwelle nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Exzenternocken (3) und/oder das Antriebsbauteil (5) am Wellenkörper (2) mittels einer drehfesten Wellen/Nabenverbindung festlegbar sind.
- Verstellwelle nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass das Antriebsbauteil (5) mit mindestens einem Drehwinkelbegrenzungsanschlag (6) ausgebildet ist.
- Verstellwelle nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass der Wellenkörper (2) und/oder die Exzenternocken (3) und/oder das Antriebsbauteil (5) aus unterschiedlichem Werkstoff gefertigt sind.
- Verstellwelle nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass das Antriebsbauteil (5) ein eine Verlagerung eines Abtriebsbauteils eines Antriebs in eine Drehbewegung der Verstellwelle umsetzendes Bauteil ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410021646 DE102004021646A1 (de) | 2004-05-03 | 2004-05-03 | Verstellwelle eines hubvariablen Ventiltriebs |
DE102004021646 | 2004-05-03 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1593880A1 true EP1593880A1 (de) | 2005-11-09 |
EP1593880B1 EP1593880B1 (de) | 2008-05-07 |
Family
ID=34934688
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20050007185 Active EP1593880B1 (de) | 2004-05-03 | 2005-04-01 | Verstellwelle eines hubvariablen Ventiltriebs |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1593880B1 (de) |
DE (2) | DE102004021646A1 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005040959A1 (de) * | 2005-08-30 | 2007-03-08 | Bayerische Motoren Werke Ag | Hubvariabler Ventiltrieb für eine Brennkraftmaschine |
DE102006008532A1 (de) * | 2006-02-22 | 2007-08-30 | Thyssenkrupp Automotive Ag | Verfahren und Vorrichtung zur Fertigbearbeitung von gebauten Nocken- und Exzenterwellen |
WO2008017418A1 (de) | 2006-08-07 | 2008-02-14 | Thyssenkrupp Presta Teccenter Ag | Sicherungselement zur axialen sicherung eines lagers auf einer welle |
FR2913720A1 (fr) * | 2007-03-16 | 2008-09-19 | Timken Co | Arbre a cames |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007013039A1 (de) | 2007-03-19 | 2008-09-25 | Schaeffler Kg | Verfahren der Anordnung eines ungeteilten Wälzlagers an einer Welle und Wälzlager dafür |
DE102007063725B4 (de) * | 2007-03-19 | 2016-06-02 | Bayerische Motoren Werke Aktiengesellschaft | Welle |
DE102011083292A1 (de) | 2011-09-23 | 2013-03-28 | Bayerische Motoren Werke Aktiengesellschaft | Axialanschlag für ein Wälzlager |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5007165A (en) * | 1989-09-02 | 1991-04-16 | Balckeurr Aktiengesellschaft | Method of producing a cam shaft |
US5337626A (en) * | 1993-02-23 | 1994-08-16 | Ryobi Outdoor Products, Inc. | Laminated gear and method of forming a laminated gear |
US5392511A (en) * | 1993-04-21 | 1995-02-28 | T & N Technology Limited | Manufacture of camshafts |
US5826461A (en) * | 1996-01-22 | 1998-10-27 | Kaywood Products Corporation | Camshaft assembly and method of making the same |
DE19717660A1 (de) * | 1997-04-25 | 1998-10-29 | Helga Wanzke | Fertigung von Nocken |
WO2002072306A1 (de) * | 2001-03-12 | 2002-09-19 | Karl Merz | Verfahren zum fügen einer nockenwelle |
EP1347211A1 (de) * | 2000-11-14 | 2003-09-24 | Honda Giken Kogyo Kabushiki Kaisha | Nockenblock und herstellungsverfahren dafür |
EP1371816A2 (de) * | 2002-06-13 | 2003-12-17 | Nissan Motor Co., Ltd. | Zusammengesetzte Nockenwelle für eine Brennkraftmaschine und Verfahren zur Herstellung |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7920957U1 (de) * | 1979-07-21 | 1979-10-31 | Grammel, Werner, 5980 Werdohl | Nockenwelle |
DE19608983A1 (de) * | 1995-03-17 | 1996-09-19 | Volkswagen Ag | Steuerwelle und Verfahren zu ihrer Herstellung |
DE19638329B4 (de) * | 1995-09-28 | 2006-08-31 | Volkswagen Ag | Nocken |
DE19637385A1 (de) * | 1996-08-17 | 1998-02-19 | Hermann Grothe | Tischspiel |
DE19703260A1 (de) * | 1997-01-30 | 1998-08-06 | Ind Fahrzeugtechnik Gmbh & Co | Gebaute Nockenwelle |
DE20116112U1 (de) * | 2001-10-01 | 2001-12-13 | ThyssenKrupp Automotive AG, 44793 Bochum | Nockenwelle mit Einbuchtungen |
DE10235400A1 (de) * | 2002-08-02 | 2004-02-19 | Bayerische Motoren Werke Ag | Zylinderkopf für eine Brennkraftmaschine mit einem hubvariablen Ventiltrieb |
DE10322250B4 (de) * | 2003-05-13 | 2008-01-17 | Federal-Mogul Wiesbaden Gmbh & Co. Kg | System mit Hilfsnockenwelle und mindestens zwei Lagern und Verfahren zur Herstellung eines Systems mit Hilfsnockenwelle und mindestens zwei Lagern |
-
2004
- 2004-05-03 DE DE200410021646 patent/DE102004021646A1/de not_active Withdrawn
-
2005
- 2005-04-01 DE DE200550003945 patent/DE502005003945D1/de active Active
- 2005-04-01 EP EP20050007185 patent/EP1593880B1/de active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5007165A (en) * | 1989-09-02 | 1991-04-16 | Balckeurr Aktiengesellschaft | Method of producing a cam shaft |
US5337626A (en) * | 1993-02-23 | 1994-08-16 | Ryobi Outdoor Products, Inc. | Laminated gear and method of forming a laminated gear |
US5392511A (en) * | 1993-04-21 | 1995-02-28 | T & N Technology Limited | Manufacture of camshafts |
US5826461A (en) * | 1996-01-22 | 1998-10-27 | Kaywood Products Corporation | Camshaft assembly and method of making the same |
DE19717660A1 (de) * | 1997-04-25 | 1998-10-29 | Helga Wanzke | Fertigung von Nocken |
EP1347211A1 (de) * | 2000-11-14 | 2003-09-24 | Honda Giken Kogyo Kabushiki Kaisha | Nockenblock und herstellungsverfahren dafür |
WO2002072306A1 (de) * | 2001-03-12 | 2002-09-19 | Karl Merz | Verfahren zum fügen einer nockenwelle |
EP1371816A2 (de) * | 2002-06-13 | 2003-12-17 | Nissan Motor Co., Ltd. | Zusammengesetzte Nockenwelle für eine Brennkraftmaschine und Verfahren zur Herstellung |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005040959A1 (de) * | 2005-08-30 | 2007-03-08 | Bayerische Motoren Werke Ag | Hubvariabler Ventiltrieb für eine Brennkraftmaschine |
DE102006008532A1 (de) * | 2006-02-22 | 2007-08-30 | Thyssenkrupp Automotive Ag | Verfahren und Vorrichtung zur Fertigbearbeitung von gebauten Nocken- und Exzenterwellen |
WO2008017418A1 (de) | 2006-08-07 | 2008-02-14 | Thyssenkrupp Presta Teccenter Ag | Sicherungselement zur axialen sicherung eines lagers auf einer welle |
DE102006036820A1 (de) * | 2006-08-07 | 2008-02-14 | Thyssenkrupp Automotive Ag | Sicherungselement zur axialen Sicherung eines Lagers auf einer Welle |
DE102006036820B4 (de) * | 2006-08-07 | 2008-04-24 | Thyssenkrupp Automotive Ag | Sicherungselement zur axialen Sicherung eines Lagers auf einer Welle |
FR2913720A1 (fr) * | 2007-03-16 | 2008-09-19 | Timken Co | Arbre a cames |
Also Published As
Publication number | Publication date |
---|---|
DE502005003945D1 (de) | 2008-06-19 |
DE102004021646A1 (de) | 2005-12-01 |
EP1593880B1 (de) | 2008-05-07 |
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