EP1412621B1 - Commande variable de course de soupape - Google Patents

Commande variable de course de soupape Download PDF

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Publication number
EP1412621B1
EP1412621B1 EP02787108A EP02787108A EP1412621B1 EP 1412621 B1 EP1412621 B1 EP 1412621B1 EP 02787108 A EP02787108 A EP 02787108A EP 02787108 A EP02787108 A EP 02787108A EP 1412621 B1 EP1412621 B1 EP 1412621B1
Authority
EP
European Patent Office
Prior art keywords
valves
valve
actuating
cam
rocker
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.)
Expired - Lifetime
Application number
EP02787108A
Other languages
German (de)
English (en)
Other versions
EP1412621A1 (fr
Inventor
Herbert Naumann
Helmut Dr-Ing. Schön
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.)
ThyssenKrupp Technologies AG
Original Assignee
ThyssenKrupp Automotive 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 ThyssenKrupp Automotive AG filed Critical ThyssenKrupp Automotive AG
Publication of EP1412621A1 publication Critical patent/EP1412621A1/fr
Application granted granted Critical
Publication of EP1412621B1 publication Critical patent/EP1412621B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • 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
    • F01L13/0063—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 by modification of cam contact point by displacing an intermediate lever or wedge-shaped intermediate element, e.g. Tourtelot
    • 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
    • F01L13/0063—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 by modification of cam contact point by displacing an intermediate lever or wedge-shaped intermediate element, e.g. Tourtelot
    • F01L2013/0068—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 by modification of cam contact point by displacing an intermediate lever or wedge-shaped intermediate element, e.g. Tourtelot with an oscillating cam acting on the valve of the "BMW-Valvetronic" 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
    • F01L2303/00—Manufacturing of components used in valve arrangements
    • F01L2303/01—Tools for producing, mounting or adjusting, e.g. some part of the distribution
    • 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
    • F01L2305/00—Valve arrangements comprising rollers
    • 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
    • F01L2800/00—Methods of operation using a variable valve timing mechanism
    • F01L2800/13—Throttleless
    • 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 mechanical, variable Hubventil practise by the individual valve or Ventli philosophy during operation of the engine, the valve lift continuously adjusted from a maximum length to a constant closed keeping while the opening time of the valves can be changed, the valves are driven by rocker arm , which are acted upon even by swing, tilt or angle lever, whose position change the stroke and the opening time of the valves are changed.
  • valves in the lower speed ranges of the engine allows, as required by the engine developers, at a set, reduced valve lift a much smaller angle of rotation for the opening range of the valves and to the rotation angle of the Valve opening further shortened angle of rotation for the operation of the opening and closing of the valves is achieved.
  • the lift valve controls can be used for throttle-free load control and for valve and cylinder deactivation.
  • One or more valves can be driven by the Hubventil tenuisme alternately by different cams, wherein the switching by an adjustment of control lever, without the use of a switchable coupling pin.
  • a valve train of an internal combustion engine having at least two parallel-acting, each actuated by a cam and a transmission member lifting valves per cylinder, wherein the valve lift of the globe valves from each other is variably adjustable.
  • the support points of the transmission elements via rotatable, lying on a common eccentric shaft eccentric are adjustable and the elevation curves of the at least two eccentric cylinders differ from each other.
  • the transmission member is designed as a drag lever which is supported on the eccentric and acts on a rocker arm
  • the invention has for its object to propose an alternative Hubventil preciselyung.
  • Fig. 1 shows a Hubventil penetrateung with two mutually arranged on a control disc rocker arms, which are each driven by a cam and even drive a rocker arm, which actuates a valve.
  • FIG. 2 shows a Hubventil penetrateung in a comparison with FIG. 1 other embodiment.
  • Fig. 1 shows a cylinder head arranged in the lift valve control, which is provided for the simultaneous actuation of two valves 51 .
  • the Hubventil situated on a control disk 52 which is rotatably mounted in a connected to the cylinder head 53 bearing block 54 , which serves as storage of the camshaft 55, storage of a control shaft 56 and support the return springs 57 .
  • the adjusting disc 52 has in its lateral region on an axis 58 , on each side of the adjusting disc 52 each a rocker arm 59 is arranged, both rocker arms 59 are driven with their cam roller 60 from above by a respective cam 61.
  • the rocker arms 59 have downwardly directed contact surfaces 62 and 63 , which extend approximately parallel to the longitudinal axis of the rocker arm 59 , wherein via the contact surfaces 62 depending on a rocker arm 64 is driven via its roller 65 , while by the contact surfaces 63 a constant keeping closed the valves 51 is produced.
  • the valve stroke length can be adjusted continuously during operation of the engine from a maximum valve lift to a constant close keeping, with the valve opening time simultaneously decreases with the reduction of the valve lift.
  • a phase shift of the valve actuation takes place, whereby a camshaft adjuster can be replaced in a suitable camshaft rotation direction.
  • the Hubventil thoroughly works on the principle of a planetary gear in which the rollers 65 of the two actuate the valves 51 rocker arm 64 perform the function of a sun gear, while the rocker arms 59 have the function of planetary gears and their contact surfaces 63 , circular curved outwards, the Form the rolling surface of a planetary gear.
  • the adjusting disc 52 serves as a planetary carrier, wherein the axis of rotation is equal to the axis of rotation of serving as a sun gear rollers 65 of the rocking lever 64 when the valves 51 are closed.
  • the continuous keeping the valves 51 producing contact surfaces 63 are curved in a circular arc to the outside, whose radius R1 has a center which is in the axis of rotation of their rocker arm 59 and the sum of the radius R1 and the radiator length R2 of the rollers 65 the distance L between the common axis of rotation of the adjusting disc 52 and the rollers 65 and the axis 58 of the adjusting disc 52 results.
  • the adjusting disc 52 has on its outer circumference a circular, about the axis of rotation of the adjusting disc 52 extending teeth 66, in which engages the rotatably mounted in the bearing block 54 control shaft 56 with its teeth.
  • the lift valve control is set to the maximum valve lift and in the angular position B to a continuous closed holding the valve 52 .
  • valve 51 For the actuation of a valve 51 or the simultaneous actuation of three valves 51 two adjusting disks 52 are arranged, between which a driven by a cam 61 rocking lever 59 is disposed on an axis 58 which connects the two adjusting disks 52 .
  • a driven by a cam 61 rocking lever 59 is disposed on an axis 58 which connects the two adjusting disks 52 .
  • axis 58 For the simultaneous actuation of three valves 51 are arranged on the two outer sides of the adjusting discs 52 on the protruding from the adjusting discs 52 axis 58 each have a further driven by a cam 61 rocker arm 59 , all rocker arm 59 their valves 51 via the oscillating lever arranged below them 64 drive.
  • valves 51 can be actuated by different cams 61 .
  • the rocker arms 59 are arranged on the adjusting disc 52 on at least two axes 58 , that by turning the adjusting disk 52, a group of pointing in a direction of rotation rocker arm 59 turns the cam engagement, while another group of pointing in the opposite direction of rotation rocker arm 59th escapes the cam intervention.
  • a lever 83 In the stroke valve control shown in Fig. 1, it is also possible to use as adjusting instead of the adjusting disc 52 described a lever 83 , as shown in Fig. 2.
  • the pivot axis of this control lever 83 must, as with the adjusting disk 52 with the pivot axis of the roller 65 of the rocker arm 64 are aligned when the associated valve 51 is closed.
  • the adjusting lever 83 may be formed as an angle lever and then has remote from its pivot axis an axially parallel pivot receptacle with the axis 58 for the pivotable mounting of the rocking lever 59 .
  • the actuating lever 83 thus has the same function as the adjusting disc 52nd
  • Both the adjusting disk 52 and, alternatively, the adjusting lever 83 can be arranged on both sides on one side or the lifting valve control on both sides.
  • the rotation of the control lever 83 can, as shown in Fig. 2, indirectly via a control shaft 56 or directly done.

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)
  • Mechanically-Actuated Valves (AREA)
  • Fluid-Damping Devices (AREA)
  • Fluid-Driven Valves (AREA)
  • Magnetically Actuated Valves (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)

Claims (6)

  1. Commande de soupape pour faire varier en continu la course de soupapes et pour maintenir les soupapes à l'état constamment fermé pendant le fonctionnement du moteur, commande de soupape par l'intermédiaire de laquelle un organe d'ajustement (52) est monté à rotation dans un support de palier (54) relié à la culasse (53), lequel présente un axe (58) agencé de manière excentrique, sur lequel est agencé au moins un culbuteur (59) pouvant pivoter, qui est entraîné par l'intermédiaire d'un galet de came (60) d'une came (61), le culbuteur (59) entraînant pas ses surfaces de contact (62 et 63) des culbuteurs (64) actionnant des soupapes (51) par l'intermédiaire de leurs galets (65), l'axe de rotation de l'organe d'ajustement (52) étant ainsi, à l'état fermé des soupapes (51), identique à l'axe de rotation des galets (65), les surfaces de contact (63) produisant un état constamment fermé des soupapes (51) étant courbées en arc de cercle vers l'extérieur, le rayon (R1) présentant un centre qui se situe dans l'axe de rotation de son culbuteur (59), et la somme de la longueur du rayon (R1) et de 1a longueur du rayon (R2) du galet (65) faisant la distance (L) entre l'axe de rotation commun de l'organe d'ajustement (52) et des galets (65), à l'état fermé des soupapes (51), et l'axe (58) de l'organe d'ajustement (52).
  2. Commande de soupape selon la revendication 1, caractérisée en ce que l'organe d'ajustement est réalisé sous la forme d'un disque d'ajustement (52), et des culbuteurs rotatifs (59) sont agencés sur l'axe (58), de part et d'autre du disque d'ajustement (52), lesquels sont entraînés par la came (61), par l'intermédiaire du galet de came (60).
  3. Commande de soupape selon la revendication 1 ou 2, caractérisée en ce que, pour commander une soupape (51), deux disques d'ajustement (52) ou leviers d'ajustement (83) sont agencés comme organe d'ajustement, entre lesquels un culbuteur (59) entraîné par une came (61) est monté à rotation sur un axe (58) reliant les deux disques d'ajustement (52) et, pour commander trois soupapes (51), des culbuteurs (59) entraînés par une came (61) sont montés à rotation sur l'axe (58) ressortant de la face externe du disque d'ajustement (52).
  4. Commande de soupape selon l'une des revendications précédentes, caractérisée en ce que les soupapes (51) sont commandées successivement par des cames (61) différentes, par l'intermédiaire de culbuteurs (59) montés sur au moins deux axes (58) des disques d'ajustement (52) ou leviers d'ajustement (83), culbuteurs agencés l'un à côté de l'autre et pivotés de 180° l'un par rapport à l'autre, qui sont positionnés de manière correspondante sur le disque d'ajustement (52), de telle sorte que, par une rotation du disque d'ajustement (52) un groupe des culbuteurs (59) pointant dans une direction de rotation, se place dans le domaine d'action des cames, tandis que simultanément un autre groupe des culbuteurs (59) pointant dans la direction de rotation opposée s'écarte du domaine d'action des cames.
  5. Commande de soupape selon les revendications 2 à 4, caractérisée en ce que, pour un réduire un déphasage de la commande de soupape produit par un ajustement de la commande de soupape, les culbuteurs (59) sont entraînés par une tringle s'étendant sensiblement verticalement, présentant un galet de came, le galet de came étant fixé à une tige de guidage horizontale, reliée à la structure de la culasse.
  6. Commande de soupape selon l'une des revendications précédentes, caractérisée en ce que les galets de came agencés dans les commandes de soupapes et d'autres galets agencés pour commander les soupapes, sont remplacés en totalité ou en partie par des organes de glissement façonnés.
EP02787108A 2001-07-17 2002-07-03 Commande variable de course de soupape Expired - Lifetime EP1412621B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10136612A DE10136612A1 (de) 2001-07-17 2001-07-17 Variable Hubventilsteuerungen
DE10136612 2001-07-17
PCT/EP2002/007321 WO2003008772A1 (fr) 2001-07-17 2002-07-03 Commande variable de course de soupape

Publications (2)

Publication Number Publication Date
EP1412621A1 EP1412621A1 (fr) 2004-04-28
EP1412621B1 true EP1412621B1 (fr) 2006-04-26

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ID=7693291

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02787108A Expired - Lifetime EP1412621B1 (fr) 2001-07-17 2002-07-03 Commande variable de course de soupape

Country Status (14)

Country Link
US (4) US6886512B2 (fr)
EP (1) EP1412621B1 (fr)
JP (1) JP4340150B2 (fr)
KR (1) KR100898537B1 (fr)
CN (1) CN1322227C (fr)
AT (1) ATE324516T1 (fr)
BR (1) BR0210830B1 (fr)
CA (1) CA2447252C (fr)
DE (2) DE10136612A1 (fr)
ES (1) ES2258660T3 (fr)
HU (1) HU228971B1 (fr)
MX (1) MXPA04000323A (fr)
PL (1) PL201473B1 (fr)
WO (1) WO2003008772A1 (fr)

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DE4404145A1 (de) 1994-02-09 1995-08-10 Schaeffler Waelzlager Kg Schalteinrichtung in einem Ventiltrieb
EP0717174A1 (fr) * 1994-12-12 1996-06-19 Isuzu Motors Limited Système de commande de soupape pour moteur à combustion interne
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EP0744532B1 (fr) 1995-05-22 1999-03-03 Dr.Ing.h.c. F. Porsche Aktiengesellschaft Moteur multicylindre
DE19532334A1 (de) * 1995-09-01 1997-03-06 Bayerische Motoren Werke Ag Variabler Ventiltrieb, insbesondere für Brennkraftmaschinen
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US6439177B2 (en) * 2000-06-30 2002-08-27 Delphi Technologies, Inc. Low friction variable valve actuation device

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HU228971B1 (en) 2013-07-29
PL366896A1 (en) 2005-02-07
US7111600B2 (en) 2006-09-26
DE50206589D1 (de) 2006-06-01
WO2003008772A1 (fr) 2003-01-30
BR0210830A (pt) 2004-06-22
PL201473B1 (pl) 2009-04-30
EP1412621A1 (fr) 2004-04-28
US20050045126A1 (en) 2005-03-03
HUP0304040A2 (en) 2004-07-28
US20050051120A1 (en) 2005-03-10
BR0210830B1 (pt) 2011-03-09
US6938596B2 (en) 2005-09-06
CA2447252C (fr) 2011-11-08
US6886512B2 (en) 2005-05-03
ES2258660T3 (es) 2006-09-01
ATE324516T1 (de) 2006-05-15
CA2447252A1 (fr) 2003-01-30
US6973904B2 (en) 2005-12-13
US20050103292A1 (en) 2005-05-19
CN1322227C (zh) 2007-06-20
DE10136612A1 (de) 2003-02-06
KR100898537B1 (ko) 2009-05-20
JP4340150B2 (ja) 2009-10-07
JP2004522065A (ja) 2004-07-22
US20040118369A1 (en) 2004-06-24
KR20040018372A (ko) 2004-03-03
CN1533468A (zh) 2004-09-29
MXPA04000323A (es) 2005-03-07

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