EP1128029B1 - Dispositif de distribution variable pour moteur à combustion interne - Google Patents

Dispositif de distribution variable pour moteur à combustion interne Download PDF

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Publication number
EP1128029B1
EP1128029B1 EP20010102431 EP01102431A EP1128029B1 EP 1128029 B1 EP1128029 B1 EP 1128029B1 EP 20010102431 EP20010102431 EP 20010102431 EP 01102431 A EP01102431 A EP 01102431A EP 1128029 B1 EP1128029 B1 EP 1128029B1
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EP
European Patent Office
Prior art keywords
camshaft
adjusting
gear
opening
internal combustion
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
EP20010102431
Other languages
German (de)
English (en)
Other versions
EP1128029A2 (fr
EP1128029A3 (fr
Inventor
Paul Dipl.-Ing. Breidenbach
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.)
Adam Opel GmbH
Original Assignee
Adam Opel 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 Adam Opel GmbH filed Critical Adam Opel GmbH
Publication of EP1128029A2 publication Critical patent/EP1128029A2/fr
Publication of EP1128029A3 publication Critical patent/EP1128029A3/fr
Application granted granted Critical
Publication of EP1128029B1 publication Critical patent/EP1128029B1/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
    • 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
    • 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
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift

Definitions

  • the invention relates to a variable valve control for reciprocating internal combustion engines according to the Preamble of claim 1.
  • Variable valve controls of this type are for Example from DE 42 44 550 A1. They are special on a throttle-free load control of gasoline engines by changing the stroke and / or the opening duration of Inlet valves aligned. These are to operate the Intake valves, an opening camshaft and a closing camshaft provided, which rotate in opposite directions to each other and act on the valve via cams and levers. By turning the camshafts against each other can Stroke and the opening duration during operation of the internal combustion engine be changed in many areas.
  • Valve controls a four-wheel coupling gearbox provided, the drive wheel with that of the crankshaft driven first camshaft and its output gear with the relative to the first camshaft twisting second camshaft is rotatably connected.
  • the drive connection between drive and driven gear is made via two intermediate wheels, which over coupling with each other and with drive and driven gear in engagement are held.
  • Such a coupling gear requires in the area the one end face of the cylinder head of the internal combustion engine considerable space, since the coupling itself, the actuator acting on it and its drive as well attached to the paddles intermediate wheels outside the axes of the camshaft must be arranged.
  • the coupling gear is formed with externally toothed spur gears, the In addition, not be formed arbitrarily large can result from the relatively low realizable Covering the gearing considerable Tooth games, which the adjustment behavior of the valve train adversely affect and lead to noise. It is therefore in the cited document DE 42 44 550 A1 proposed, the wheels of the linkage with helical teeth to provide them, to divide them axially and the part wheels to tense against each other.
  • the invention is based on the object variable valve timing in the preamble of claim 1 type to improve so that the Space for the adjusting mechanism between the opening and closing camshaft of the intake valves can be reduced can, the reliability in terms of backlash is increased in the adjustment, the construction cost and thus reduces the cost of the adjustment and, moreover, a larger adjustment range is possible.
  • the on the ring gears and thus on the angular position The camshafts acting adjusting wheels can from the outside can be rotated arbitrarily by an adjusting. This is also an arbitrarily large angle adjustment of Camshafts against each other possible.
  • a reciprocating internal combustion engine 1 has a Cylinder crankcase 2 and a cylinder head 3 on.
  • a crankshaft in the Cylinder crankcase 2 is a crankshaft.
  • 4 In the cylinder head 3 are for actuating intake valves an opening camshaft 5 and a closing camshaft 6 and an exhaust camshaft for actuating the exhaust valves 7 stored.
  • On the crankshaft 4 is located a drive wheel 8, which via a chain 9 with the Nockenwellenantriebsrad 10 on the opening camshaft. 5 and with the camshaft drive wheel 11 on the exhaust camshaft 7 is connected.
  • the opening camshaft 5 and the lock camshaft 6 are connected via an adjusting 12 with each other connected.
  • the nature of this connection is below described in more detail in the representation of the variable 12.
  • the control unit 14 processes among other things Signals from sensors 15, which on phase wheels 16, the on the crankshaft 4 of the opening camshaft 5 and the Lock camshaft 6 are fixed and their angular position detect.
  • the control unit 14 can thus be known per se Way depending on the driver's request and the other vehicle and engine parameters the optimal Opening parameters (start of opening, opening duration, opening stroke) determine the intake valves and a corresponding Set command to the servomotor 13.
  • This adjustment by means of the adjusting 12th occurs constantly during engine operation of the Internal combustion engine 1.
  • Concentric with this ring gear 18 is on each of the two camshafts 5, 6 an eccentric part 20 rotatably mounted.
  • Each of these eccentric parts 20 forms the respective axis 21 of the camshafts 5, 6th a eccentric to the dimension e bearing surface 22 about the eccentric axis 23.
  • the adjusting wheels 24 are respectively with a first toothing 25 smaller diameter and with a second toothing 26 of larger diameter Mistake.
  • the gearing 25 with the smaller Diameter is engaged with the internal teeth 19 the respective ring gear 18.
  • the larger teeth 26th both adjusting wheels 24 are in mutual engagement.
  • Each of the two eccentric 20 has a concentric to the axes 21 of the camshafts 5, 6 extending Verstellverzahnung 27, designed as external teeth is smaller and smaller in diameter than the gearing 26 of the adjusting wheels 24 is.
  • both eccentric 20 engages a toothing 28 of the Adjusting wheel 17 a.
  • the two adjusting wheels 24 are the two the intake valves actuated camshafts 5, 6 rotatably connected.
  • the coming of the opening camshaft 5 Torque passes from the internal teeth 19 of the ring gear 18 of this wave 5 on the first teeth 25 of the the opening camshaft 5 located adjusting wheel 24 and is on the second teeth 26 on the at the Transferring camshaft 6 located adjusting wheel 24, whose former teeth 25 with the internal teeth 19 the ring gear 18 of the lock cam 6 in engagement stands.
  • the two eccentric 20 are not running with around. You can, however, by means of the adjusting 17 on the Verstellvertechnikept 27 in the same direction to the respective Axle 21 of the camshafts 5, 6 are rotated. In each case, the eccentric axis 23 moves on one Web 29 about the axis 21 of the corresponding camshaft 5, 6 ( Figure 3 and Figure 4).
  • FIG. 3 shows an initial position, at the position of setting wheels 24 and ring gears 18 with the marks 30, 31, 32, 33 and 34 in one Line is marked.
  • the opening camshaft 5 is held by the same direction Twisting the two eccentric 20 to a certain Angle of rotation to enter a position according to Figure 4, in the the eccentric axes 23 on the track 29 by 90 ° are. It has on the side of the opening camshaft 5, the toothing 25 of the adjusting wheel 24 on the internal toothing 19 of the ring gear 18 so passed that the mark 30 at a certain angle from the line is distracted. To the same extent is on the larger Diameter of the second toothing 26, the mark 31st deflected.
  • This deflection is also the on the toothing 26 of the adjusting wheel 24 on the side of the Lock camshaft 6 located brand 32 deflected. Around the same angular amount as the mark 32 is thus also the brand 34 deflected. Due to the consequent rolling the toothing 25 on the internal teeth 19 the side of the lock cam 6 becomes the mark 33 and so that the camshaft 6, with respect to the opening camshaft 5, twisted by a certain angle.
  • This adjustment is also at rotating Camshafts 5, 6 in any direction in any size Adjustment possible.
  • By essentially on the axes 21 of the two mutually adjustable camshafts 5, 6 arranged elements of the variable transmission 12 is claimed compared to known solutions little space.
  • By the result of the engagement of the adjusting wheels Guaranteed 24 in the internal gears 19 of the ring gears 18 high degree of coverage of the gears is a high level of functional reliability, also with regard to the noise behavior achieved.

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 (4)

  1. Dispositif de distribution variable pour des moteurs à combustion interne à pistons alternatifs (1), comprenant un arbre de came d'ouverture (5) et un arbre de came de fermeture (6) pour actionner des soupapes d'admission et au moins un autre arbre à came (3) pour actionner des soupapes d'échappement, l'arbre à came d'ouverture (5) et l'arbre à came de fermeture (6) pouvant subir une modification de leur position en rotation mutuelle au moyen d'une transmission de réglage (12) sollicitée par un servomoteur, commandé par un appareil de commande en fonction de paramètres moteur et/ou véhicule, caractérisé en ce que la transmission de réglage (12) est formée de transmissions à engrenages planétaires ou épicycloïdaux ayant au moins une roue creuse (18) et une roue de réglage (24), s'engageant à l'intérieur et montée excentriquement par rapport à la roue creuse (18), les transmissions à engrenages planétaires étant chacune disposées de façon sensiblement coaxiale sur les extrémités, se trouvant sur une face frontale commune du moteur à combustion interne (1), des deux arbres à came (5, 6) actionnant les soupapes d'admission, et les roues de réglage (24) étant sollicitées par une roue de réglage (17) commune, reliée au servomoteur (13).
  2. Dispositif de distribution variable selon la revendication 1, caractérisé en ce que la transmission de réglage (12) formée d'engrenages planétaires est composée chaque fois d'une roue creuse (18) reliée de façon assujettie en rotation à l'arbre à came d'ouverture (5) et d'une zone creuse reliée à l'arbre à came de fermeture (6), les roues creuses (18) comprenant une denture intérieure (19), chaque fois une partie d'excentrique (20), montée coaxialement et à rotation sur chacun de ces arbres à came (5, 6) avec une surface de palier (22), s'étendant de façon excentrée par rapport à l'axe (21) respectif de l'arbre à came (5, 6) ainsi qu'avec chaque fois une denture de réglage (27) centrée par rapport à l'axe (21), avec chaque fois une roue de réglage (24), montée à rotation sur chacune des surfaces de palier (22) des parties d'excentrique (20), en ce que chacune des roues de réglage (24) est munie d'une première denture (25), s'engrenant avec la denture intérieure (19) de la roue creuse (18) afférente, ainsi que d'une deuxième denture (26), les deuxièmes dentures (26) des deux roues de réglage (24) étant engrenées ensemble et les deux parties d'excentrique (20) étant susceptible d'être entraínée en rotation dans le même sens, par la roue de réglage (17) commune du servomoteur (13).
  3. Dispositif de distribution variable selon la revendication 1 ou 2, caractérisé en ce que, dans l'entraínement de l'arbre à came d'ouverture (5) ou de l'arbre à came de fermeture (6), pour les soupapes d'admissions et/ou de l'arbre à came (7) pour les soupapes d'échappement, depuis le vilebrequin (4) du moteur à combustion interne (1), d'autres dispositifs de réglage connus en soi sont prévus, pour le réglage de l'angle de rotation.
  4. Dispositif de distribution variable selon l'une ou plusieurs des revendications 1 à 3, caractérisé en ce que, au moins, sur l'arbre à came d'ouverture (5), sur l'arbre à came de fermeture (6) et sur le vilebrequin (4) du moteur à combustion interne (1), sont prévues des roues pour transmetteur de phase (16) et des capteurs (15) orientés sur celles-ci, la position angulaire des roues pour transmetteur de phase (16) étant évaluée par un appareil de commande (14), en liaison avec d'autres paramètres moteur et véhicule, pour effectuer la commande du servomoteur (13).
EP20010102431 2000-02-12 2001-02-03 Dispositif de distribution variable pour moteur à combustion interne Expired - Lifetime EP1128029B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10006365 2000-02-12
DE2000106365 DE10006365A1 (de) 2000-02-12 2000-02-12 Variable Ventilsteuerung für Hubkolben-Brennkraftmaschinen

Publications (3)

Publication Number Publication Date
EP1128029A2 EP1128029A2 (fr) 2001-08-29
EP1128029A3 EP1128029A3 (fr) 2002-11-13
EP1128029B1 true EP1128029B1 (fr) 2005-11-09

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ID=7630765

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20010102431 Expired - Lifetime EP1128029B1 (fr) 2000-02-12 2001-02-03 Dispositif de distribution variable pour moteur à combustion interne

Country Status (3)

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EP (1) EP1128029B1 (fr)
DE (2) DE10006365A1 (fr)
ES (1) ES2250235T3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE50212655D1 (de) * 2002-03-08 2008-09-25 Ford Global Tech Llc Verfahren zur Steuerung eines Viertakt-Ottomotors mit variabler Ventilsteuerung
CN101178031B (zh) * 2002-10-25 2010-06-02 株式会社电装 内燃机的可变气门正时控制设备
DE102004018947A1 (de) 2004-04-20 2005-11-17 Daimlerchrysler Ag Verstellgetriebe für eine Nockenwellenanordnung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2480854A1 (fr) * 1980-04-22 1981-10-23 Renault Commande de soupapes de moteurs a combustion interne par distributeur hydraulique a faible consommation de puissance
DE4110195C2 (de) * 1991-03-28 2000-02-10 Schaeffler Waelzlager Ohg Verstellvorrichtung für eine Nockenwelle
DE4244550C2 (de) * 1992-12-30 1998-05-28 Meta Motoren Energietech Vorrichtung zur Verdrehung von Nockenwellen von Brennkraftmaschinen
DE19701203A1 (de) * 1997-01-15 1998-07-23 Daimler Benz Ag Variable Ventilsteuerung für Brennkraftmaschinen
DE19747011A1 (de) * 1997-10-24 1999-04-29 Daimler Chrysler Ag Variable Ventilsteuerung für Brennkraftmaschinen
DE19747031A1 (de) 1997-10-24 1999-04-29 Daimler Chrysler Ag Variable Ventilsteuerung für Brennkraftmaschinen
DE19831486A1 (de) * 1998-07-14 2000-01-20 Daimler Chrysler Ag Koppelgetriebe für eine variable Ventilsteuerung

Also Published As

Publication number Publication date
EP1128029A2 (fr) 2001-08-29
ES2250235T3 (es) 2006-04-16
DE50107942D1 (de) 2005-12-15
DE10006365A1 (de) 2001-08-16
EP1128029A3 (fr) 2002-11-13

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