EP1748160B1 - Commande de soupape variable pour moteur à combustion interne - Google Patents

Commande de soupape variable pour moteur à combustion interne Download PDF

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Publication number
EP1748160B1
EP1748160B1 EP06013565A EP06013565A EP1748160B1 EP 1748160 B1 EP1748160 B1 EP 1748160B1 EP 06013565 A EP06013565 A EP 06013565A EP 06013565 A EP06013565 A EP 06013565A EP 1748160 B1 EP1748160 B1 EP 1748160B1
Authority
EP
European Patent Office
Prior art keywords
disposed
intermediate member
supporting body
variable valve
valve
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.)
Not-in-force
Application number
EP06013565A
Other languages
German (de)
English (en)
Other versions
EP1748160A1 (fr
Inventor
Markus Meyer
Andreas Werler
Jörg Wutzler
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.)
IAV GmbH Ingenieurgesellschaft Auto und Verkehr
Original Assignee
IAV GmbH Ingenieurgesellschaft Auto und Verkehr
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 IAV GmbH Ingenieurgesellschaft Auto und Verkehr filed Critical IAV GmbH Ingenieurgesellschaft Auto und Verkehr
Publication of EP1748160A1 publication Critical patent/EP1748160A1/fr
Application granted granted Critical
Publication of EP1748160B1 publication Critical patent/EP1748160B1/fr
Not-in-force 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
    • 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
    • F01L13/0021—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 rocker arm ratio
    • F01L13/0026—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 rocker arm ratio by means of an eccentric
    • 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
    • F01L2305/00—Valve arrangements comprising rollers

Definitions

  • the invention relates to a variable valve train for internal combustion engines with the features mentioned in the preamble of claim 1.
  • the intermediate member is in engagement with one of the cams of the camshaft and a Hubübertragungsan Ich for a valve.
  • the cam determines depending on the pivotal position of the variable element during the stroke of the cam, the trajectory of the intermediate member and thus the size of the Hubübertragungsan himself caused by the valve stroke.
  • the structural design of this embodiment is limited because the support curve and the cam are arranged successively extending on the variable in its position element and thereby a certain distance between the two prismatic engagement lines on the support curve and the control cam and the intermediate member is necessary.
  • a variable valve train for internal combustion engines with a indirectly from a cam on a cylinder head directly or indirectly pivotally mounted rocker or rocker arm moving valve assembly having one or more under the action of a spring closing valves.
  • the rocker arm or rocker arm engages with a swingably guided intermediate lever, this intermediate lever continuing on the one hand with the cam of a camshaft and on the other hand with a control cam of the cylinder head directly or indirectly rotatably mounted support body slidably or is engaged.
  • the support body determines with its position and the effective range of a control cam, the size of the valve, which can be adjusted by means of a suitable control and a corresponding actuator, the Winkeigna the support body.
  • variable valve train with adjustable valve lift in which automatically takes place in an adjustment in the direction of lower stroke, a forward displacement of the valve opening area.
  • an intermediate lever via a roller arranged on the intermediate lever with a valve-actuating pivot lever and arranged on a pivotable support body supporting curve and on the other hand via a roller arranged on the intermediate lever with the cam contour of the camshaft in operative connection.
  • a guide rocker is pivotally arranged, which is articulated to a coupled to the support body actuating arm.
  • the invention has for its object to provide a variable valve train for an internal combustion engine in which an adjustment of the valve opening and / or valve closing angle takes place in the direction of early or late in reducing the forces and the required installation space, at the same time carried out adjusting the valve lift can.
  • a variable valve train for internal combustion engines consisting of at least one camshaft, which is operatively connected via transmission members with a pivot lever for actuating the valves and a support body for valve lift
  • the intermediate member is firstly arranged on the intermediate member on a.
  • the intermediate member is indirectly connected via an arranged on a rocker roller with the cam of the camshaft in operative connection, wherein the pivotable rocker is pivotally connected thereto via a lever connected to the intermediate member.
  • valve lift adjustment and / or for adjusting the valve opening and / or closing angle the rocker is articulated to the pivotable support body.
  • a variant of the valve lift adjustment and / or adjustment of Ventilötechnischs- and / or -sch spawinkels provides to arrange the support body fixed to the cylinder head and to provide the now no longer connected to the support body rocker with an adjustment for pivoting the rocker.
  • the advantage of the device according to the invention consists in a compact design, which makes it possible to concentrate the components such as camshaft, support body, pivot lever and transmission elements in the narrowest space.
  • Another significant advantage of the solution according to the invention is that the power transmission point of the intermediate member on the support body is always between the contact point of the support curve of the intermediate member on the pin of the support body and the contact point of the intermediate member disposed roller and the control cam of the support body. This ensures that the intermediate member is constantly pressed against the support body. A possible swing out the intermediate member of the device is thereby avoided. At the same time, the forces to be transmitted are minimized by this arrangement.
  • valve opening angle can be kept almost constant by the design of the control cam and the support curve and the outer contour surface of the intermediate member in conjunction with the adjustment of the intermediate member by the pivotable rocker, while the closing angle between early and late is adjustable ,
  • the lifting height of the valve lift curve is also variable, wherein the minimization of the valve lift can be kept low.
  • This is advantageous in particular for the application of the valve drive according to the invention for an inlet valve.
  • it is advantageous to leave the closing angle of the exhaust valve almost constant, while the opening angle of the exhaust valve is adjusted to early or late. This can also be done a variation of the valve.
  • variable valve drive for internal combustion engines is explained using the example of an intake valve.
  • the solution according to the invention can also be used for the exhaust valves of an internal combustion engine.
  • the valve train has a camshaft 1 with a cam 2 which, with the interposition of a transmission mechanism, moves a pivoting lever 14 and thus a valve 17 which can be closed by means of spring force and is kept closed.
  • a valve 17 which can be closed by means of spring force and is kept closed.
  • the pivot lever 14 is mounted on a guided in the cylinder head axis with the interposition of an eccentric bushing 19.
  • the pivotable eccentric bushing 19 serves for additional adaptation of the pivot lever position in cooperation with the clearance compensation element 16.
  • the displaceable transmission mechanism consists essentially of an intermediate member 9 and an articulated on the intermediate member 9 lever 10, which is articulated about a pivotally mounted rocker 3.
  • a roller 4 is arranged, in operative connection with the contour of the cam 2 of Camshaft 1 is stationary.
  • a supporting body 5 pivotally arranged about the pivot axis 18 on the cylinder head and, as shown in Figure 1 to 3, connected to the rocker 3.
  • the rocker 3 is simultaneously pivoted, whereby a displacement of the intermediate member 9 on the support body 5 for valve lift adjustment and / or for adjusting the valve opening and / or closing angle.
  • a variant of the solution according to the invention provides to arrange the support body 5, as shown in Figure 4 and 5, fixed to the cylinder head.
  • the rocker 3 is no longer connected to the support body.
  • the adjusting device 20 is preferably an eccentric adjustment.
  • the intermediate member 9 is supported on the one hand on the support body 5 and on the other hand on the pivot lever 14.
  • the support of the intermediate member 9 on the support body 5 is effected on the one hand on a support body 5 arranged support surface and the other on a support body 5 arranged on the control cam 11.
  • the supporting body 5 arranged support surface is preferably the outer surface of a support body 5 arranged on the pin 6, at which the arranged on the intermediate member 9 support curve 13 is supported.
  • the pin 6 is arranged about the pivot axis 18 of the support body 5.
  • a roller 8 is arranged, which is in communication with the support body 5 arranged on the control cam 11.
  • the intermediate member 9 is supported on a arranged on the pivot lever 14 roller 15 from.
  • the valve spring not shown, the pivot lever 14 is pivoted counterclockwise and thus pressed the intermediate member 9 via the roller 15 against the support body 5.
  • the intermediate member 9 is secure between the support body 5 and the pivot lever fourteenth mounted and is displaced according to the engagement of the contour of the cam 2 along the control cam 11 of the support body 5.
  • the mode of action of the solution according to the invention is the following:
  • the illustrated in Figure 1 first variant of the solution according to the invention shows a closed valve 17 at a maximum set valve lift.
  • the eccentric adjustment 7 the support body 5 has pivoted about the pivot axis 18 counterclockwise in the position shown and the roller 4 of the rocker 3 is connected to the base circle of the cam 2 in engagement.
  • the cam 2 shown in Figure 1 is rotated in the clockwise direction.
  • the roller 4 is displaced by the cam 2, whereby the rocker 3 is pivoted about its point of articulation on the support body 5 in a clockwise direction.
  • the rocker 3 By pivoting the rocker 3, the articulated via the lever 10 to the rocker arm 3 intermediate member 9 is moved over the roller 8 along the control cam 11 of the support body 5.
  • FIG. 2 shows a fully opened valve 17 at a maximum stroke setting.
  • an open valve 17 is shown at a minimum set valve lift.
  • the support body 5 shown in Figures 1 and 2 is pivoted in the clockwise direction about the pivot axis 18. This also changes the position of the control cam 11 and the position of the intermediate member 9 engaged therewith so that upon complete engagement of the cam 2 with the roller 4, the pivoting lever 14 is pivoted only by a minimum amount.
  • the intermediate member 9 is also displaced during pivoting of the support body 5, that at a variably adjusted valve lift height at the same time the valve opening and / or closing angle can be adjusted.
  • FIGS. 4 and 5 as described above, a variant of the solution according to the invention is shown.
  • the same components are provided with the same reference numerals.
  • opening and closing the valve 17 the intermediate member 9 along the control cam 11 of the support body 5 is displaced by the cam 2 and the rocker 3 and the lever 10, analogously as described to Figures 1 to 3.
  • the support body 5 is firmly connected to the cylinder head.
  • the adjustment of different valve lifts and / or the adjustment of the Ventilötechnischs- and / or - closing angle is done by the Exzenterver ein arranged on the rocker 3 adjusting 20.
  • the eccentric adjustment of the adjusting 20, the rocker 3 is displaced and thus on the on the rocker. 3 hinged lever 10, the position of the intermediate member 9 on the control cam 11 of the support body 5 changed.
  • the valve 17 is closed, while according to Figure 5, the valve 17 is opened.

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)

Claims (10)

  1. Commande de soupape variable pour moteurs à combustion interne, comprenant au moins un arbre à cames (1) et un levier pivotant (14) disposé dans la culasse, qui est en liaison coopérante avec une soupape (17) se fermant sous l'effet de la force d'un ressort, ayant la construction suivante :
    - un corps de support (5) disposé sur la culasse présente une courbe de commande (11) pour l'ajustement de la course de la soupape,
    - un organe intermédiaire (9) est disposé de manière guidée entre le corps de support (5) et le levier pivotant (14),
    - l'organe intermédiaire (9) étant en prise premièrement par le biais d'une courbe de support (13) disposée sur l'organe intermédiaire (9), avec une surface de support disposée sur le corps de support (5), et deuxièmement avec la courbe de commande (11) du corps de support (5) et troisièmement par le biais d'une surface de contour extérieur (12) disposée sur l'organe intermédiaire (9), avec le levier pivotant (14), et pouvant être déplacé par le biais d'une came (2) de l'arbre à cames (1),
    caractérisée en ce que
    la came (2) est en liaison coopérante avec l'organe intermédiaire (9) par le biais d'une bielle oscillante pivotante (3) et par le biais d'un levier (10) disposé de manière articulée entre l'organe intermédiaire (9) et la bielle oscillante (3).
  2. Commande de soupape variable selon la revendication 1,
    caractérisée en ce que
    la surface de support disposée sur le corps de support (5) est formée par un tourillon (6) disposé sur le corps de support (5), sur lequel l'organe intermédiaire (9) est monté en s'appuyant sur la courbe de support (13).
  3. Commande de soupape variable selon les revendications 1 et 2,
    caractérisée en ce que
    l'organe intermédiaire (9) est en prise par le biais d'un rouleau (8) disposé sur l'organe intermédiaire (9) avec la courbe de commande (11) du corps de support (5).
  4. Commande de soupape variable selon les revendications 1 à 3,
    caractérisée en ce que
    un rouleau (4) est disposé sur la bielle oscillante (3), lequel est en liaison coopérante avec le contour de la came (2).
  5. Commande de soupape variable selon les revendications 1 à 4,
    caractérisée en ce que
    la surface de contour extérieur (12) de l'organe intermédiaire (9) est en liaison coopérante avec le levier pivotant (14) par le biais d'un rouleau (15) disposé sur le levier pivotant (14).
  6. Commande de soupape variable selon les revendications 1 à 5,
    caractérisée en ce que
    la bielle oscillante (3) est disposée de manière articulée sur le corps de support (5) disposé sur la culasse de manière à pouvoir pivoter autour de l'axe de pivotement (18).
  7. Commande de soupape variable selon les revendications 1 à 6,
    caractérisée en ce que
    le tourillon (6) est disposé dans l'axe de pivotement (18) sur le corps de support (5).
  8. Commande de soupape variable selon les revendications 1 à 7,
    caractérisée en ce que
    pour faire pivoter le corps de support (5) autour de l'axe de pivotement (18), on prévoit un réglage excentré (7) agissant sur le corps de support (5).
  9. Commande de soupape variable selon les revendications 1 à 5,
    caractérisée en ce que
    le corps de support (5) est disposé fixement sur la culasse et la bielle oscillante (3) est munie d'un dispositif de réglage (20) pour faire pivoter la bielle oscillante (3) pour le réglage de la course de la soupape et/ou pour le réglage de l'angle d'ouverture et/ou de fermeture de la soupape.
  10. Commande de soupape variable selon la revendication 9,
    caractérisée en ce que
    le dispositif de réglage (20) est un réglage excentré.
EP06013565A 2005-07-28 2006-06-30 Commande de soupape variable pour moteur à combustion interne Not-in-force EP1748160B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005035315A DE102005035315B4 (de) 2005-07-28 2005-07-28 Variabler Ventiltrieb für Verbrennungskraftmaschinen

Publications (2)

Publication Number Publication Date
EP1748160A1 EP1748160A1 (fr) 2007-01-31
EP1748160B1 true EP1748160B1 (fr) 2008-01-23

Family

ID=37401072

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06013565A Not-in-force EP1748160B1 (fr) 2005-07-28 2006-06-30 Commande de soupape variable pour moteur à combustion interne

Country Status (4)

Country Link
US (1) US7367298B2 (fr)
EP (1) EP1748160B1 (fr)
AT (1) ATE384858T1 (fr)
DE (2) DE102005035315B4 (fr)

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Publication number Priority date Publication date Assignee Title
KR20090056602A (ko) * 2007-11-30 2009-06-03 현대자동차주식회사 가변 밸브 리프트 장치
CN101550853B (zh) * 2009-05-08 2011-04-06 上海汽车集团股份有限公司 发动机气门连续可变驱动机构
DE102012004413B4 (de) * 2012-03-08 2016-05-25 Kolbenschmidt Pierburg Innovations Gmbh Mechanisch steuerbare Ventiltriebanordnung
DE102013109414A1 (de) * 2013-08-29 2015-03-05 Fev Gmbh Ventilsteuerung für eine Brennkraftmaschine sowie Brennkraftmaschine
CN105507979A (zh) 2015-12-17 2016-04-20 广州汽车集团股份有限公司 连续可变气门升程系统及汽车
CN106640256A (zh) * 2016-12-05 2017-05-10 广州汽车集团股份有限公司 连续可变气门升程系统及具有该系统的汽车
DE102017119348A1 (de) * 2017-08-24 2019-02-28 Man Truck & Bus Ag Variabler Ventiltrieb

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FR2519375B1 (fr) * 1981-12-31 1986-07-11 Baguena Michel Distribution variable pour moteur a quatre temps
DE10031783A1 (de) * 2000-07-04 2002-01-24 Iav Gmbh Variabler Ventiltrieb mit einer indirekt von einem Nocken über einen Schwing- oder Kipphebel bewegten Ventilanordnung, vorzugsweise für Verbrennungsmotoren
DE10052811A1 (de) * 2000-10-25 2002-05-08 Ina Schaeffler Kg Variabler Ventiltrieb zur Laststeuerung einer fremdgezündeten Brennkraftmaschine
US6955146B2 (en) * 2000-12-11 2005-10-18 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr System for variably actuating valves in internal combustion engines
DE10061618B4 (de) * 2000-12-11 2004-06-03 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Einrichtung zur variablen Betätigung von Ventilen mittels Nocken für Verbrennungsmotoren
DE20220138U1 (de) * 2002-12-20 2004-04-29 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Ventiltrieb mit Nocken zur variablen Betätigung von Ventilen für Verbrennungsmotoren
DE10123186A1 (de) * 2001-05-12 2002-11-14 Bayerische Motoren Werke Ag Ventiltrieb-Vorrichtung zur variablen Hubverstellung eines Gaswechselventils einer Brennkraftmaschine
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DE10215281A1 (de) * 2002-04-06 2003-10-16 Willi Roth Vorrichtung zum stufenlosen Variieren der Ventilerhebung in Verbrennungsmotoren
DE10221133A1 (de) * 2002-05-13 2003-11-27 Thyssen Krupp Automotive Ag Antriebs- und Verstellsystem für variable Ventilsteuerungen
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DE102005042258B4 (de) * 2004-09-07 2009-07-09 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Ventiltrieb für Brennkraftmaschinen mit zwischen Zylinderbänken angeordneter Nockenwelle

Also Published As

Publication number Publication date
US20070022989A1 (en) 2007-02-01
ATE384858T1 (de) 2008-02-15
DE502006000309D1 (de) 2008-03-13
EP1748160A1 (fr) 2007-01-31
DE102005035315A1 (de) 2007-02-01
US7367298B2 (en) 2008-05-06
DE102005035315B4 (de) 2007-05-10

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