WO2009056237A1 - Mécanisme de distribution - Google Patents

Mécanisme de distribution Download PDF

Info

Publication number
WO2009056237A1
WO2009056237A1 PCT/EP2008/008784 EP2008008784W WO2009056237A1 WO 2009056237 A1 WO2009056237 A1 WO 2009056237A1 EP 2008008784 W EP2008008784 W EP 2008008784W WO 2009056237 A1 WO2009056237 A1 WO 2009056237A1
Authority
WO
WIPO (PCT)
Prior art keywords
camshaft
drive device
valve drive
valve
camshaft element
Prior art date
Application number
PCT/EP2008/008784
Other languages
German (de)
English (en)
Inventor
Jens Meintschel
Thomas Stolk
Alexander Von Gaisberg-Helfenberg
Original Assignee
Daimler Ag
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 Daimler Ag filed Critical Daimler Ag
Publication of WO2009056237A1 publication Critical patent/WO2009056237A1/fr

Links

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
    • F01L1/053—Camshafts overhead type
    • 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
    • F01L13/0036—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 the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D11/00—Clutches in which the members have interengaging parts
    • F16D11/08—Clutches in which the members have interengaging parts actuated by moving a non-rotating part axially
    • F16D11/10—Clutches in which the members have interengaging parts actuated by moving a non-rotating part axially with clutching members movable only axially
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
    • F16D3/06—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted to allow axial displacement
    • 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
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • F01L2001/0475—Hollow camshafts
    • 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
    • F01L13/0036—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 the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
    • F01L2013/0052—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 the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction with cams provided on an axially slidable sleeve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/10—Quick-acting couplings in which the parts are connected by simply bringing them together axially
    • F16D2001/102—Quick-acting couplings in which the parts are connected by simply bringing them together axially the torque is transmitted via polygon shaped connections

Definitions

  • the invention relates to a valve drive device according to the preamble of claim 1.
  • valve drive devices of an internal combustion engine with at least one first camshaft element and a second camshaft element.
  • the invention is in particular the object of providing a valve drive device having an increased torsional rigidity.
  • the object is achieved in each case by the features of the independent claims, wherein further embodiments of the invention can be taken from the subclaims.
  • the invention relates to a valve drive device with at least one first camshaft element and a second camshaft element.
  • the valve drive device comprises a coupling device which is provided to transmit a drive torque from the first camshaft element to the second camshaft element.
  • a coupling device which is provided to transmit a drive torque from the first camshaft element to the second camshaft element.
  • At least one of the camshaft elements has a cam carrier.
  • the drive torque can advantageously be forwarded directly to a valve actuating device, such as a rocker arm.
  • the cam carrier and the camshaft element are made in one piece.
  • the cam carrier has at least one cam pair, which is provided to provide a Hubumsciens in at least one operating mode.
  • the valve drive device can be adapted to different operating modes.
  • the cam carrier and the cam pair are made in one piece.
  • At least one camshaft element is arranged to be axially displaceable. This makes it easy to realize a Hubumscnies.
  • the directional indication "axial” is to be understood here and below, unless explicitly stated otherwise, in particular with respect to an axis of rotation of the valve drive device or of the camshaft element, i.e. parallel to the axis of rotation.
  • valve drive device comprises an adjusting device with at least one slide track, which is intended to move the camshaft element axially.
  • a simple adjusting device for the axial displacement of the camshaft elements can be provided.
  • both camshaft elements are arranged displaceably, whereby a particularly advantageous Hubum- switching all cylinders can be achieved. It is particularly advantageous if the adjusting device is provided to displace both camshaft elements.
  • the valve drive device has at least one cross-sectional plane which comprises both camshaft elements and the slide track.
  • a cross-sectional plane should in particular be understood to mean a plane perpendicular to the axis of rotation of the valve drive device.
  • the coupling device has a connection element which is provided to forward the drive torque.
  • the first cam carrier can advantageously be connected to the second cam carrier.
  • At least one of the camshaft elements has at least one sliding seat, which is provided to provide the axially displaceable rotationally fixed coupling.
  • an axial displacement of the cam carrier can be easily realized and the camshaft element can be easily connected to the drive shaft or the connecting element, wherein the drive shaft or the connecting element are preferably designed to be complementary to the sliding seat of the camshaft element.
  • the sliding seat is profiled, an axially displaceable, non-rotatable connection can easily be realized.
  • a profiled sliding seats for example, sliding seats with a spline, a plurality of profiles or a Polygonprofi1 are conceivable.
  • the sliding seat occupies a maximum of 50% of the camshaft element in the axial direction. As a result, a clamping tendency for the axial displacement can be reduced, in particular in conjunction with the high torsional rigidity of the valve drive device.
  • valve drive device has a drive shaft which is axially displaceably connected in a rotationally fixed manner to the first camshaft element. Thereby, the drive torque can be easily introduced into the valve drive device.
  • Fig. 1 is a valve drive device
  • FIG. 1 shows a valve drive device for an internal combustion engine with a first camshaft element 10 and a second camshaft element 11, which are coupled by means of a coupling device 12, via which a drive torque can be transmitted from the first camshaft element 10 to the second camshaft element 11.
  • the first camshaft element 10 has a first cam carrier 13 and the second camshaft element 11 has a second cam carrier 14.
  • the cam carriers 13, 14 are in one piece executed with the respective camshaft member 10, 11 and each have four cam pairs 15, 15a, 16, 16a, 17, 17a, 18, 18a, by means of which a Hubumscrien can be provided.
  • the cam pairs 15, 15a, 16, 16a which are arranged on the first cam carrier ⁇ 13, are intended to actuate gas exchange valves, not shown, of a first and a second cylinder.
  • the cam pairs 17, 17a, 18, 18a of the second cam carrier 14 are provided to actuate gas exchange valves, not shown, of a third and fourth cylinder.
  • Each cam pair 15, 15a, 16, 16a, 17, 17a, 18, 18a has two cams.
  • the pairs of cams 15, 15a, 16, 16a, 17, 17a, 18, 18a are connectable to the respective gas exchange valve via valve actuators (not shown), one of the cams of the corresponding pair of cams 15, 15a, 16, 16a, 17, 17a, 18 , 18a actuates the gas exchange valve.
  • the cams are variously shaped, whereby different operating modes can be provided with different valve opening times or types, such as a firing mode and a braking mode or operating modes for different speed ranges.
  • the two camshaft elements 10, 11 and thus the cam carrier 13, 14 are arranged axially displaceable.
  • the camshaft elements 10, 11 are moved via a common adjusting device 19 with slide tracks 20, 21, in the switch elements not shown, moved.
  • the slide tracks 20, 21 are arranged on a half circumference on the first camshaft element 10 and on a further half circumference on the second camshaft element 11.
  • a cross-sectional Level 22 thereby has the two camshaft elements 10, 11 and one of the slide tracks 20 and a connecting element 23 which couples the camshaft element 10, 11 with each other on.
  • the connecting element 23, which belongs to the coupling device 12, has a diameter which is smaller than an inner diameter of the at least one region of the coupling device 12 designed as hollow shafts camshaft elements 10, 11.
  • the drive torque is via the connecting element 23 of the first camshaft member 10 on the second camshaft member 11 transmitted.
  • the first camshaft element 10 has a first sliding seat 24, via which the camshaft element 10 is connected to the drive shaft 27.
  • a second sliding seat 25 via which the camshaft element 10 is connected to the connecting element 23, the first camshaft element 10 is axially displaceable coupled in a rotationally fixed manner to the connecting element 23.
  • the second camshaft element 11 also has a sliding seat 26, by means of which the second camshaft element 11 is coupled to the connecting element 23 so as to be axially displaceable in a rotationally fixed manner.
  • the sliding seats 24, 25, 26 are made profiled.
  • the sliding seats 24, 25, 26 have a polygonal profile, as shown for example in Figure 2 along the sectional plane II-II for the first sliding seat 24 of the first camshaft member 10.
  • each of the sliding seats 24, 25, 26 takes in the axial direction a maximum of 50% of the corresponding camshaft element 10, 11 a.
  • the drive torque is introduced via the drive device 28 into the valve drive device and forwarded via the drive shaft 27 and the sliding seat 24 to the first camshaft element 10. From the first camshaft element 10, the drive torque is transmitted via the sliding seat 25 to the connecting element 23 and then via the sliding seat 26 to the second camshaft element 11, thus resulting in a serial transmission of the drive torque for the valve train device.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

L'invention concerne un mécanisme de distribution comprenant au moins un premier élément d'arbre à cames (10) et un second élément d'arbre à cames (11). Selon l'invention, ce mécanisme de distribution comprend un dispositif d'accouplement (12) qui est conçu pour transmettre un couple d'entraînement du premier élément d'arbre à cames (10) au second élément d'arbre à cames (11).
PCT/EP2008/008784 2007-11-02 2008-10-16 Mécanisme de distribution WO2009056237A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007052251.9 2007-11-02
DE200710052251 DE102007052251A1 (de) 2007-11-02 2007-11-02 Ventiltriebvorrichtung

Publications (1)

Publication Number Publication Date
WO2009056237A1 true WO2009056237A1 (fr) 2009-05-07

Family

ID=40383680

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/008784 WO2009056237A1 (fr) 2007-11-02 2008-10-16 Mécanisme de distribution

Country Status (2)

Country Link
DE (1) DE102007052251A1 (fr)
WO (1) WO2009056237A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011009438A2 (fr) 2009-07-21 2011-01-27 Neumayer Tekfor Holding Gmbh Arbre à cames et procédé de production correspondant

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011011456A1 (de) * 2011-02-17 2012-08-23 Daimler Ag Brennkraftmaschinenventiltriebvorrichtung
DE102015122051A1 (de) 2015-12-17 2017-06-22 Thyssenkrupp Ag Nockenwellenmodul
DE102016007886B4 (de) * 2016-06-29 2020-01-09 Audi Ag Ventiltrieb für eine Brennkraftmaschine sowie Verfahren zum Herstellen eines Ventiltriebs
DE102019101518A1 (de) 2019-01-22 2020-07-23 Thyssenkrupp Ag Nockenwelle, Verbrennungsmotor und Kraftfahrzeug

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1512034A (en) * 1923-07-09 1924-10-21 Samuel W Luitwieler Cam and spindle construction
DE647163C (de) * 1936-05-23 1937-07-05 Fried Krupp Germaniawerft Akt Unterteilte Steuernockenwelle
US3447395A (en) * 1966-09-13 1969-06-03 Motosacoche Sa Camshaft
DE2300827A1 (de) * 1973-01-09 1974-07-11 Keller Edmund Ventilbetaetigungssystem einer hubkolbenbrennkraftmaschine
EP0155261A2 (fr) * 1984-03-14 1985-09-18 Hermann Weichsler Distribution à soupape pour moteur à combustion interne
US4638683A (en) * 1984-06-18 1987-01-27 Ngk Insulators, Ltd. Camshaft for engine
DE19618189A1 (de) * 1995-05-12 1996-11-14 Volkswagen Ag Vorrichtung zum Abschalten von Gaswechselventilen in einer Brennkraftmaschine
DE19544412C1 (de) * 1995-08-09 1997-04-10 Erwin Korostenski Ventiltrieb einer Brennkraftmaschine
DE10148177A1 (de) * 2001-09-28 2003-04-17 Ina Schaeffler Kg Ventiltrieb mit Ventilhubumschaltung für die Gaswechselventiele eines 4-Takt-Verbrennungsmotors
WO2004083611A1 (fr) * 2003-03-21 2004-09-30 Audi Ag Commande de soupape d'un moteur a combustion interne presentant une culasse
DE102004002301A1 (de) * 2004-01-16 2005-08-11 Audi Ag Verfahren zur Herstellung einer gebauten Nockenwelle
DE102005025931A1 (de) * 2005-06-06 2006-12-14 Siemens Ag Welle, insbesondere Nockenwelle

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1512034A (en) * 1923-07-09 1924-10-21 Samuel W Luitwieler Cam and spindle construction
DE647163C (de) * 1936-05-23 1937-07-05 Fried Krupp Germaniawerft Akt Unterteilte Steuernockenwelle
US3447395A (en) * 1966-09-13 1969-06-03 Motosacoche Sa Camshaft
DE2300827A1 (de) * 1973-01-09 1974-07-11 Keller Edmund Ventilbetaetigungssystem einer hubkolbenbrennkraftmaschine
EP0155261A2 (fr) * 1984-03-14 1985-09-18 Hermann Weichsler Distribution à soupape pour moteur à combustion interne
US4638683A (en) * 1984-06-18 1987-01-27 Ngk Insulators, Ltd. Camshaft for engine
DE19618189A1 (de) * 1995-05-12 1996-11-14 Volkswagen Ag Vorrichtung zum Abschalten von Gaswechselventilen in einer Brennkraftmaschine
DE19544412C1 (de) * 1995-08-09 1997-04-10 Erwin Korostenski Ventiltrieb einer Brennkraftmaschine
DE10148177A1 (de) * 2001-09-28 2003-04-17 Ina Schaeffler Kg Ventiltrieb mit Ventilhubumschaltung für die Gaswechselventiele eines 4-Takt-Verbrennungsmotors
WO2004083611A1 (fr) * 2003-03-21 2004-09-30 Audi Ag Commande de soupape d'un moteur a combustion interne presentant une culasse
DE102004002301A1 (de) * 2004-01-16 2005-08-11 Audi Ag Verfahren zur Herstellung einer gebauten Nockenwelle
DE102005025931A1 (de) * 2005-06-06 2006-12-14 Siemens Ag Welle, insbesondere Nockenwelle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011009438A2 (fr) 2009-07-21 2011-01-27 Neumayer Tekfor Holding Gmbh Arbre à cames et procédé de production correspondant
DE102010027656A1 (de) 2009-07-21 2011-01-27 Neumayer Tekfor Holding Gmbh Nockenwelle und entsprechendes Verfahren zur Herstellung

Also Published As

Publication number Publication date
DE102007052251A1 (de) 2009-05-07

Similar Documents

Publication Publication Date Title
DE102010013216B4 (de) Ventiltrieb einer Brennkraftmaschine
DE102008005639B4 (de) Ventiltriebvorrichtung
EP2459849B1 (fr) Dispositif de distribution à soupapes
DE102014114951B4 (de) Motorbaugruppe
DE102008053723B4 (de) Gebaute Nockenwelle
WO2020193560A1 (fr) Système de cames coulissantes et moteur
WO2011026562A1 (fr) Mécanisme de distribution pour soupapes d'échange de gaz d'un moteur à combustion interne comportant des ensembles came axialement déplaçables
EP3434871B1 (fr) Système de cames coulissantes
WO2009056222A1 (fr) Dispositif d'inversion de mécanisme de distribution d'un moteur à combustion interne
WO2009056237A1 (fr) Mécanisme de distribution
EP2742215B1 (fr) Élément à came(s) pour mécanisme de commande de soupapes
WO2009083060A1 (fr) Dispositif de commande de soupapes
DE102015008623A1 (de) Nockenwelle für eine Brennkraftmaschine
WO2014161620A1 (fr) Dispositif de commande de soupapes pour un moteur à combustion interne de véhicule à moteur
WO2013053416A1 (fr) Système de distribution pour moteur à combustion interne
WO2014117916A1 (fr) Actionneur pour dispositif de déphasage d'arbre à cames
DE102012001303B4 (de) Verstellwellenbetätigung eines Ventiltriebs für Brennkraftmaschinen zur Betätigung von Gaswechselventilen
DE102017127044B4 (de) Schiebenockenelement, Nockenwelle und Verfahren zur Herstellung eines Schiebenockenelements
WO2013026520A1 (fr) Arbre à cames pour la commande des soupapes d'un moteur à combustion interne
DE102020210264A1 (de) Sensorrad mit Arretierabschnitt, Sensorsystem und Schiebenockensystem mit Sensorrad
WO2017102396A1 (fr) Module d'arbre à cames
DE102016118710A1 (de) Nockenwellenverstellsystem für eine Verbrennungskraftmaschine
DE102019101518A1 (de) Nockenwelle, Verbrennungsmotor und Kraftfahrzeug
EP3215719A1 (fr) Commande de soupape pour actionner des soupapes d'échange de gaz d'un moteur à combustion interne
DE102015209285A1 (de) Ventiltrieb eines Verbrennungsmotors

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08843509

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08843509

Country of ref document: EP

Kind code of ref document: A1