EP1476643B1 - Ventilsteuerung - Google Patents

Ventilsteuerung Download PDF

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Publication number
EP1476643B1
EP1476643B1 EP04703749A EP04703749A EP1476643B1 EP 1476643 B1 EP1476643 B1 EP 1476643B1 EP 04703749 A EP04703749 A EP 04703749A EP 04703749 A EP04703749 A EP 04703749A EP 1476643 B1 EP1476643 B1 EP 1476643B1
Authority
EP
European Patent Office
Prior art keywords
valve
cam
intermediate element
valve control
control according
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 - Fee Related
Application number
EP04703749A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1476643A1 (de
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 Ventiltrieb GmbH
Original Assignee
Mahle Ventiltrieb 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 Ventiltrieb GmbH filed Critical Mahle Ventiltrieb GmbH
Publication of EP1476643A1 publication Critical patent/EP1476643A1/de
Application granted granted Critical
Publication of EP1476643B1 publication Critical patent/EP1476643B1/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • F01L13/0047—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 the movement of the valves resulting from the sum of the simultaneous actions of at least two cams, the cams being independently variable in phase in respect of each other
    • 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 valve control for actuating at least one valve, in particular an inlet or exhaust valve of an internal combustion engine according to the preamble of patent claim 1.
  • valve controls are, for example, basically known from DE-PS 119741, GB-PS 170877, GB-PS 654240, DE 3531000 Al and GB 2180597 A.
  • a valve lift is only achieved when the intermediate element is actuated by both cam profiles.
  • the resulting valve lift corresponds to the cumulative function of both cam profiles.
  • valve lift and the opening duration can be set in such controls can, for example, be taken quite well from GB 2180597 A.
  • a particular disadvantage of these solutions is that in times without valve lift in contrast to the standard valve lift between the intermediate element and a cam profile or between the valve and the actuator a very large game occurs, which normally corresponds to the valve lift of a cam.
  • the invention is concerned with the problem of improving the aforementioned disadvantages of great game, difficult automatic clearance compensation and the need for a contact force in the direction of a cam profile on the one hand or a very limited adjustment range on the other hand and at the same time to provide a generic valve control, with a throttle-free load control "is easily possible in an internal combustion engine of a particular vehicle.
  • a solution according to the invention of this problem complex shows a generic valve control according to the characterizing feature of claim 1.
  • Two synchronously rotating and mutually phase-adjustable camshaft having a first and second cam profile 1 and 2 actuate a designed as a lever with two contact rollers intermediate element 4, which transmits the sum movement via a bearing axis on a serving as a lifting actuator 5 lever via a play compensation device 9 a Valve 6 actuated.
  • the lifting actuator 5 is pressed in the Nullhubphase against a stop 8.
  • a spring 7 ensures that the intermediate element 4 always bears against the contact roller as the first guide region 111 of the intermediate element 4 and the first cam profile 1. In the base circle phase, there is clearance between the second cam profile 2 and the corresponding contact roller as the second guide region 222 of the intermediate element 4.
  • valve lift is only possible if both cam profiles 1, 2 are in contact with the intermediate element 4 at the same time.
  • valve opening is achieved by one of the two camshafts, while the second camshaft must be in the stroke position.
  • the closing movement is then achieved by the transition from the stroke position to a base circle phase on the second camshaft with the second cam profile 2.
  • the valve 6 is actuated via the intermediate element 4 by the two camshafts with the first and second cam profile 1, 2 or the intermediate element 4 is forcibly guided between the cam profiles 1 and 3 of the camshaft concerned, wherein the Hubbetuschistselement 5 and the valve. 6 not to be moved.
  • the camshaft with the second cam profile 2 and the roller as the second guide portion 222 on the intermediate element 4 occurs in this phase game.
  • the three cam profiles 1, 2, 3 are arranged concentrically on a common camshaft.
  • the second cam profile 2 with respect to the other two cam profiles 1 and 3, which are fixedly connected to the camshaft phase-adjustable.
  • This phase adjustment can be achieved with the usual constructional measures in the prior art.
  • a known embodiment consists, for example, to arrange the mutually to be adjusted cam profiles on concentric nested, mutually rotatable camshaft, to which the outer camshaft has radial recesses for the associated with the inner shaft cam profiles.
  • the adjusting movement of the camshaft is transmitted to the intermediate element 4 on the one hand by the first cam profile 1, which cooperates exclusively with the first guide portion 111 of the intermediate element and the second and third cam profile, these two latter cam profiles 2, 3 alternately only interact with the second guide portion 222 of the intermediate element 4.
  • the positive control of the cam profile 1 is given by the design of the third cam profile 3 as a complementary profile to the first cam profile 1.
  • a phase shift of the second cam profile 2 with respect to the rest of the camshaft with the cam profiles 1, 3 results from a changed superposition of the cam profiles a changed movement of the intermediate element 4 and thus a variation of the valve lift generated and the opening duration for the valve 6.
  • a valve opening phase through the cam profiles 1, 2 there is no contact between the third cam profile 3 and the intermediate element 4.
  • the valve control according to FIG. 4 has a structure basically comparable with the embodiment according to FIG. 3. In the embodiment according to FIG. 4, however, in contrast to that according to FIG. 3, the movement of the cam profiles 1 to 3 is not transmitted to the intermediate element 4 by rolling but via sliding contacts. This intermediate element 4 is in contact via a ball and socket bearing 100 with a lifting actuating element 5, by means of which the valve 6 is actuated. About the clearance compensation element 9 consisting of the Hubbetuschistselement 5 and the intermediate element 4 power transmission system is held without play between the first and third cam profile 1, 3 and the valve 6. The contours of the first and second guide portions 111, 222 of the intermediate element 4 in the embodiment of FIG. 4 are shown in the sections of FIGS. 4A and 4B.
  • the contact area for the cam profiles 2 and 3 is in an inner portion 11 of the intermediate element 5 and takes place alternately between the second cam profile 2 (here closing cam) and the divided third cam profile 3 (return cam).
  • the divided first cam profile 1 (here opening cam) has sufficient clearance and does not contact the intermediate element 4 in its second guide region 222.
  • Fig. 4B the arrangement is reversed, the split cam profile 1 (here opening cam) actuates the intermediate element 4 in the outer regions 12 and 13, wherein the two cam profiles 2 and 3, the intermediate element 4 do not touch.
  • FIG. 5 corresponds substantially to that of FIG. 4 with the difference that on the one hand on the cam profiles 1 to 3, a roll pick and that on the other the intermediate element 4 is connected via a journal bearing 101 with the Hubbetuschistselement 5.
  • the sections in FIGS. 5A, 5B show that a roller 14 provided in the first guide region 111 of the intermediate element 4 can be alternately in contact with the cam profiles 2 and 3 (not shown).
  • FIG. 5B it can also be seen how the second guide sections 222 of the intermediate element 4 are formed there as rollers for a roll tapping.
  • Fig. 5C that applies Same.
  • only the bearings of the rollers are otherwise formed or stamped from the material of the intermediate element 4.
  • Fig. 6 shows a structurally very simple and space-saving valve control.
  • the intermediate element 4 is slidably in contact with a plunger member 10 as a special embodiment of a Hubbetuschists institutes 5 via an adjusting plate 17 which may be formed, for example, of ceramic.
  • the mounting of the intermediate element 4 in the direction of the axis of the camshaft with the cam profiles 1 to 3 is achieved by opposing side walls 15 of the intermediate element 4 by these rest against associated base bodies of the cam profiles 1 to 3 as an abutment.
  • the intermediate element 4 may be formed in any inner region with a guide wall engaging between the cam profiles as an abutment.
  • Fig. 10 relates to a valve control with elements according to the invention for actuation of a valve pair with a tilted to a camshaft axis extending pivot axis 19 of the Hubübertragungsiatas 5.
  • This valve arrangement will be referred to as "achsverfilter".
  • Such a valve control can be effected by a transmission device which consists of an intermediate element 4 according to one of the embodiments in FIGS. 4, 5 and in particular 8 and a lifting actuating element 5 according to FIG. 8, for example. While in the embodiment of FIG.
  • a "third cam profile 3" is present, such with respect to the advantages of such a device in an application in "axle twisted" valves basically missing as the embodiment in Fig. 10 shows.
  • a spring 7 in the context of the prior art shown in FIG. 1 is required to ensure a permanent contact of the intermediate member 4 with a cam profile 1, 2 within the transmission device between the camshaft and valves.
  • This spring 7 is present in the device according to FIG. 10, but can not be seen lying in the drawing behind the intermediate element 4.
  • Decisive for the function of the device according to FIG. 10 is a ball and socket bearing 100 between the intermediate element 4 and the lifting actuating element 5.
  • the embodiment according to FIG. 11 basically has the same construction as the embodiment according to FIG. 10.
  • the spring required in the absence of the "third cam profile" according to the invention according to the prior art is shown in FIG 7 - whose representation is not recognizable in FIG. 10 - drawn in a special form of storage.
  • This storage takes place via such in the intermediate element 4 and the Hubbetuschistselement 5 molded abutment 21 and 22, that these two parts 4, 5 form not yet mounted in the control state a transportable composite in which they can be installed in the control.
  • the formation of the abutments 21, 22 can be done in particular to the intermediate element 4, that for the intermediate element 4 by the abutment 21 against axial side walls 20 of a slot 23, an axial guidance of the intermediate element 4 is achieved.
  • a stop 24 is provided on the intermediate element 4 as a contact region formed concentrically with the axis of rotation of the intermediate element 4 in the sense of the stop 8 according to the embodiment in FIGS. 1 and 2, in order in particular to provide a missing "third cam profile". to be able to provide an automatic valve clearance compensation 9.
  • first and second cam profiles 1 and 2 may be mutually phase-displaceable.
  • valve control principle according to the invention is preferably used for the actuation of one or more valves with a cam package.

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)
EP04703749A 2003-01-30 2004-01-21 Ventilsteuerung Expired - Fee Related EP1476643B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10303601 2003-01-30
DE10303601A DE10303601A1 (de) 2003-01-30 2003-01-30 Ventilsteuerung
PCT/DE2004/000079 WO2004067922A1 (de) 2003-01-30 2004-01-21 Ventilsteuerung

Publications (2)

Publication Number Publication Date
EP1476643A1 EP1476643A1 (de) 2004-11-17
EP1476643B1 true EP1476643B1 (de) 2006-04-26

Family

ID=32695049

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04703749A Expired - Fee Related EP1476643B1 (de) 2003-01-30 2004-01-21 Ventilsteuerung

Country Status (6)

Country Link
US (1) US7299774B2 (zh)
EP (1) EP1476643B1 (zh)
JP (1) JP4440253B2 (zh)
CN (1) CN100458107C (zh)
DE (2) DE10303601A1 (zh)
WO (1) WO2004067922A1 (zh)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112005000030D2 (de) 2004-07-17 2006-10-05 Mahle Ventiltrieb Gmbh Steuereinrichtung für ein Ventil, insbesondere ein Gaswechselventil eines Verbrennungsmotors
GB2438628A (en) * 2006-05-31 2007-12-05 Mechadyne Plc Engine with variable valve actuating mechanism
GB2449096A (en) * 2007-05-10 2008-11-12 Mechadyne Plc Variable valve actuating system for i.c. engines
DE102007049110B4 (de) * 2007-10-12 2017-06-22 Volkswagen Ag Brennkraftmaschine mit zwei gemischten Nockenwellen
GB2456760B (en) 2008-01-22 2012-05-23 Mechadyne Plc Variable valve actuating mechanism with lift deactivation
DE102014110674A1 (de) 2014-07-29 2016-02-04 Thyssenkrupp Presta Teccenter Ag Verfahren zur Einstellung eines Axialspiels zwischen zwei Komponenten einer Nockenweelle
CN106703921A (zh) * 2015-07-31 2017-05-24 长城汽车股份有限公司 用于发动机的配气机构及其凸轮

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE119741C (zh)
GB170877A (en) 1920-05-04 1921-11-04 Arturo Caprotti Improvements in valve gears for elastic-fluid engines
FR872667A (fr) 1940-06-01 1942-06-16 Distribution à soupapes à cames tournantes décalables commandées par des engrenages pour des moteurs à fluide élastique
DE3531000A1 (de) * 1985-08-30 1986-08-28 Herbert Dipl.-Ing. 8000 München Gohle Vorrichtung zur verringerung der drosselverluste bei kolbenmotoren unter teillast durch phasenanschnittsteuerung der ventile
GB2180597A (en) 1985-09-13 1987-04-01 Frederick Arthur Summerlin Valve control
GB9018558D0 (en) * 1990-08-23 1990-10-10 Ricardo Group Plc Valve gear for internal combustion engines
US5052350A (en) * 1990-11-02 1991-10-01 King Brian T Device to combine the motions of two camlobes differentially phased
US5555860A (en) * 1991-04-24 1996-09-17 Wride; Donald C. Valve control mechanism
DE4322480C2 (de) * 1993-07-06 1996-05-02 Meta Motoren Energietech Vorrichtung zur variablen Ventilsteuerung von Brennkraftmaschinen
JPH0813542A (ja) 1994-06-28 1996-01-16 Maeda Corp 掘削土砂搬送装置
JPH08135412A (ja) * 1994-11-08 1996-05-28 Naoji Ebikawa バルブ強制開閉機構
DE19600536C2 (de) * 1996-01-09 2002-08-22 Meta Motoren Energietech Vorrichtung zur variablen Steuerung eines Einlaßventils
DE19701201A1 (de) * 1997-01-15 1998-07-23 Daimler Benz Ag Variable Ventilsteuerung für Brennkraftmaschinen
DE19802738A1 (de) * 1998-01-26 1999-07-29 Opel Adam Ag Vorrichtung zur variablen Steuerung eines Ventils einer Brennkraftmaschine
DE59900189D1 (de) 1999-01-19 2001-09-13 Ford Global Tech Inc Vorrichtung zur variablen Steuerung eines Ventils einer Brennkraftmaschine
DE19920512A1 (de) * 1999-05-05 2000-11-09 Opel Adam Ag Vorrichtung zur Betätigung eines Ventiles mit variablem Hub an Brennkraftmaschinen

Also Published As

Publication number Publication date
CN1717535A (zh) 2006-01-04
DE10303601A1 (de) 2004-08-12
US20050211202A1 (en) 2005-09-29
JP4440253B2 (ja) 2010-03-24
CN100458107C (zh) 2009-02-04
EP1476643A1 (de) 2004-11-17
WO2004067922A1 (de) 2004-08-12
US7299774B2 (en) 2007-11-27
DE502004000456D1 (de) 2006-06-01
JP2006517016A (ja) 2006-07-13

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