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EP1197640B1 - Ventilsteuerungseinrichtung mit mehreren Konfigurationen - Google Patents

Ventilsteuerungseinrichtung mit mehreren Konfigurationen Download PDF

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Publication number
EP1197640B1
EP1197640B1 EP01402273A EP01402273A EP1197640B1 EP 1197640 B1 EP1197640 B1 EP 1197640B1 EP 01402273 A EP01402273 A EP 01402273A EP 01402273 A EP01402273 A EP 01402273A EP 1197640 B1 EP1197640 B1 EP 1197640B1
Authority
EP
European Patent Office
Prior art keywords
rest
rocker switch
valve
cam
stop
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
EP01402273A
Other languages
English (en)
French (fr)
Other versions
EP1197640A1 (de
Inventor
Laurent Christophe Vuillemin
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.)
PSA Automobiles SA
Original Assignee
Peugeot Citroen Automobiles SA
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 Peugeot Citroen Automobiles SA filed Critical Peugeot Citroen Automobiles SA
Publication of EP1197640A1 publication Critical patent/EP1197640A1/de
Application granted granted Critical
Publication of EP1197640B1 publication Critical patent/EP1197640B1/de
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
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/26—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder
    • F01L1/267—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder with means for varying the timing or the lift of the valves
    • 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
    • F01L13/0031—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 tappet or pushrod length
    • 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
    • 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
    • F01L1/08—Shape of cams

Definitions

  • the present invention relates, in general, a valve distribution control device for thermal motor.
  • the invention relates to a valve distribution control device for engine, of the type that includes at minus a first, a second, and a third crew, and a first and a second valve to which the first and second crews are respectively dedicated, each crew including a stop, a rocker and a cam associated with each other and relating to this crew, each rocker having one end of support taking support, at least under conditions determined, on the associated stop, and one end actuation remote from the support end, each cam being rotated at an angular speed identical for the three crews and moving, at least under determined conditions and according to an angle of rotation of this cam, the associated rocker, each valve being resiliently biased toward a position of rest, which she adopts by default, and being moved towards a maximum actuation position, at least in conditions determined, by the end actuation of the rocker of the crew assigned to it dedicated, the third stop selectively adopting a state rest, for which the third rocker remains inactive, and an active state, for which the third cam moves simultaneously, via the third
  • a device of this type is for example described in patent documents FR-2 674 287 and EP 0 462 853 A and makes it possible to vary the amplitude of the lift by one or two valves and / or the opening law of this or these valves.
  • the object of the invention is specifically to propose a device for controlling distribution easy to implement and yet very versatile, i.e. able to take a number of relatively high configurations.
  • control device for distribution of the invention is essentially characterized in that the first stop selectively adopts a rest state, for which the first rocker remains inactive, and an active state, for which the first cam moves, via from the first rocker, the first valve to its first maximum actuation position when the third stop is in its rest state.
  • the second stop adopts itself selectively a state of rest, for which the second rocker remains inactive, and an active state, for which the second cam moves, through the second rocker, the second valve to the second position maximum actuation when the third stop is in its resting state.
  • the first and second distances are different one of the other.
  • the third distance is made greater at the first and second distances.
  • the invention relates to a valve distribution control device which is intended to equip a heat engine, and which comprises essentially three crews 11 to 13, and two valves 21 and 22 to which the two extreme crews 11 and 12 are respectively dedicated.
  • Each crew includes a stopper such as 31 to 33, a rocker such as 41 to 43, and a cam such as 51 to 53, these elements being associated with each other at the interior of each crew 11, 12, and 13, and each of them being assigned to one of the crews.
  • Each rocker such as 41 to 43, has a support end, such as 410, 420 and 430, and a actuation end such as 415, 425, and 435, away from the support end.
  • each rocker takes support, under conditions to be specified subsequently, on the stop, such as 31 to 33, which is associated with this rocker.
  • the three cams 51 to 53 are rotated at the same angular speed, each of them moving the rocker associated with it, such as 41 to 43, in conditions which will themselves be specified later, and according to a function of the angle of rotation of this cam.
  • Each valve 21 and 22 is resiliently biased, by a spring not shown, towards a rest position which it adopts by default.
  • the first valve 21 can however be moved towards a first position of maximum actuation, in conditions which will be specified later, by the actuating end 415 of the rocker 41 moved by the cam 51, the rest position and the first position maximum actuation being separated from each other by a distance denoted D1.
  • the second valve 22 can be moved to a second actuation position maximum, under conditions to be specified subsequently, by the actuating end 425 of the rocker 42 driven by cam 52, the rest position and the second maximum actuation position being separated from each other by a distance denoted D2.
  • the third stop 33 is controlled by means known or accessible to those skilled in the art to adopt will a state of rest, for which the rocker associated 43 remains inactive, or an active state, for which the associated cam 53 moves simultaneously, by through the rocker 43, the two valves 21 and 22 towards a third maximum actuation position, separated from the rest position of these valves by a third distance D3 different from distances D1 and D2.
  • the third crew 13 is arranged between the crews extremes 11 and 12, and the actuating end 435 of the rocker 43 takes the form of a shaped pallet of so that you can wear both valves 21 and 22.
  • each of the rockers 41 to 43 constitutes a lever of the third type, that is to say that the associated cam, 51 to 53, press this rocker between the support end and the actuating end of this rocker.
  • each of the rockers 41 to 43 constitutes a lever of the first type, articulated around a tilt axis X disposed between its support end and its end actuation, the support end being selectively moved by the associated cam, 51 to 53, and through of the associated stop 31 to 33.
  • the stop 33 is for example hydraulically controlled to be locked in translation or incompressible in length when it must adopt its active state, and to be on the contrary easily movable in translation or compressible when it must adopt its state of rest, this stop then being unable to provide stable support to the rocker.
  • the stop 33 is for example hydraulically controlled to be incompressible in length when it must adopt its active state, and for on the contrary be easily compressible when it must adopt its state of rest, this stop being then unable to transmit the movement of the associated cam.
  • the first stop 31 is itself ordered by means known or accessible to the skilled person to adopt at will a state of rest, for which the associated rocker 41 remains inactive, and an active state, for which the associated cam 51 moves, by means of rocker 41, the first valve 21 to its first actuation position maximum, when the third stop 33 is in its state rest.
  • the second stop 32 is preferably it also controlled by means known or accessible to the skilled person to adopt at will a state of rest, for which the second rocker 42 remains inactive, and an active state, for which the second cam 52 moves, via the second rocker 42, the second valve 22 to the second actuation position maximum, when the third stop 33 is in its state rest.
  • first and second distances D1 and D2 are advantageously different from each other and both less than the third distance D3.
  • Cams 51 to 53 are then unable actuate rockers 41 to 43.
  • valves 21 and 22 remain stationary at their closing level N0, and the cylinder of the motor to which access is controlled by the device is disabled.
  • Cams 51 and 53 are impossible actuate rockers 41 and 43, but cam 52 on the other hand actuates the rocker 42.
  • valve 21 remains stationary, but the valve 22 moves, as a function of the rotation of the cam 52, between its rest position, which is located at the closing level N0, and its actuation position maximum, which is the position shown and which is located a level N1, separated from level N0 by the distance D2.
  • Cams 52 and 53 are impossible actuate rockers 42 and 43, but cam 51 on the other hand actuates the rocker 41.
  • valve 22 remains stationary, but the valve 21 moves, as a function of the rotation of the cam 51, between its rest position, which is located at the closing level N0, and its actuation position maximum, which is the position shown and which is located a level N2, separated from level N0 by the distance D1 in the occurrence assumed to be greater than the distance D2.
  • Cam 53 is unable to activate the rocker 43, but the cams 51 and 52 operate in however the rockers 41 and 42, respectively.
  • valve 21 moves, in function of the rotation of the cam 51, between its position of rest at level N0 and its actuation position maximum at level N2.
  • valve 22 moves, depending on the rotation of the cam 52, between its rest position at level N0 and its maximum actuation position at level N1.
  • Cam 53 actuates rocker 43, which in turn moves valves 21 and 22 simultaneously.
  • Each of these valves moves, depending on the rotation of the cam 53, between its rest position at level N0 and the maximum actuation position at level N3 imposed by cam 53, this actuating position being separated from the rest level N0 by a distance D3 in this case assumed to be greater than distances D1 and D2.
  • the stops can be ordered according to a technique known in itself, by solenoid valves (not shown) upstream of the engine oil circuit, these solenoid valves being themselves controlled by the engine control unit.
  • the device of the invention is not limited to the order of engine intake valves but is also applicable to the control of exhaust valves.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Valve Housings (AREA)
  • Multiple-Way Valves (AREA)
  • Fluid-Driven Valves (AREA)

Claims (4)

  1. Ventilsteuerungseinrichtung für Verbrennungsmotoren, mit zumindest einem ersten, einem zweiten und einem dritten beweglichen Organ (11, 12, 13) und mit einem ersten und einem zweiten Ventil (21,22), denen das erste bzw. das zweite bewegliche Organ (11, 12) zugeordnet ist, wobei jedes bewegliche Organ einen Anschlag (31 bis 33), eine Kippvorrichtung (41 bis 43) und einen Nocken (51 bis 53) enthält, die einander zugeordnet sind und sich jeweils auf dieses bewegliche Organ (11, 12, 13) beziehen, wobei jede Kippvorrichtung (41 bis 43) ein Abstützende (410, 420, 430) aufweist, das sich zumindest unter bestimmten Bedingungen an dem zugeordneten Anschlag (31 bis 33) abstützt, sowie ein vom Abstützende entfernt liegendes Betätigungsende (415, 425, 435), wobei jeder Nocken (51 bis 53) mit einer für die drei beweglichen Organe identischen Winkelgeschwindigkeit drehend mitgenommen wird und zumindest unter bestimmten Bedingungen und in Abhängigkeit von dem Drehwinkel dieses Nockens die zugeordnete Kippvorrichtung (41 bis 43) verlagert, wobei jedes Ventil (21, 22) elastisch in eine Ruhestellung beaufschlagt wird, die es unter Vorgabe einnimmt, und zumindest unter bestimmten Bedingungen vom Betätigungsende (415, 425) der Kippvorrichtung (41, 42) des diesem zugeordneten beweglichen Organs in eine maximale Betätigungsstellung verlagert wird, wobei der dritte Anschlag (33) selektiv einen Ruhezustand einnimmt, in dem die dritte Kippvorrichtung (43) inaktiv bleibt, sowie einen aktiven Zustand, in dem der dritte Nocken (53) über die dritte Kippvorrichtung (43) zugleich das erste und das zweite Ventil (21, 22) in eine entsprechende maximale Betätigungsstellung verlagert, wobei die Ruhestellung und die erste maximale Betätigungsstellung, welche das erste Ventil (21) von der ersten Kippvorrichtung (41) gesteuert einnimmt, durch einen ersten Abstand (D1) voneinander getrennt sind, wobei die Ruhestellung und die zweite maximale Betätigungsstellung, welche das zweite Ventil (22) von der zweiten Kippvorrichtung (42) gesteuert einnimmt, durch einen zweiten Abstand (D2) voneinander getrennt sind, und wobei die Ruhestellung und die dritte maximale Betätigungsstellung, welche jeweils das erste und das zweite Ventil (21, 22) von der dritten Kippvorrichtung (43) gesteuert einnimmt, durch einen dritten Abstand (D2) voneinander getrennt sind, der sich von dem ersten und dem zweiten Abstand (D1, D2) unterscheidet, dadurch gekennzeichnet, dass der erste Anschlag (31) selektiv einen Ruhezustand einnimmt, in dem die erste Kippvorrichtung (41) inaktiv bleibt, sowie einen aktiven Zustand, in dem der erste Nocken (51) über die erste Kippvorrichtung (41) das erste Ventil (21) in seine erste maximale Betätigungsstellung verlagert, wenn der dritte Anschlag (33) sich in seinem Ruhezustand befindet.
  2. Steuerungseinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der zweite Anschlag (32) selektiv einen Ruhezustand einnimmt, in dem die zweite Kippvorrichtung (42) inaktiv bleibt, sowie einen aktiven Zustand, in dem der zweite Nocken (52) über die zweite Kippvorrichtung (42) das zweite Ventil (22) in seine zweite maximale Betätigungsstellung verlagert, wenn der dritte Anschlag (33) sich in seinem Ruhezustand befindet.
  3. Steuerungseinrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der erste und der zweite Abstand (D1, D2) voneinander verschieden sind.
  4. Steuerungseinrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der dritte Abstand (D3) größer ist als der erste und der zweite Abstand (D1, D2).
EP01402273A 2000-10-13 2001-08-31 Ventilsteuerungseinrichtung mit mehreren Konfigurationen Expired - Lifetime EP1197640B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0013153 2000-10-13
FR0013153A FR2815377B1 (fr) 2000-10-13 2000-10-13 Dispositif de commande de distribution a soupapes, a configurations multiples

Publications (2)

Publication Number Publication Date
EP1197640A1 EP1197640A1 (de) 2002-04-17
EP1197640B1 true EP1197640B1 (de) 2004-11-03

Family

ID=8855328

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01402273A Expired - Lifetime EP1197640B1 (de) 2000-10-13 2001-08-31 Ventilsteuerungseinrichtung mit mehreren Konfigurationen

Country Status (5)

Country Link
EP (1) EP1197640B1 (de)
AT (1) ATE281589T1 (de)
DE (1) DE60106843T2 (de)
ES (1) ES2232578T3 (de)
FR (1) FR2815377B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5090037B2 (ja) 2007-03-22 2012-12-05 株式会社オティックス 可変動弁機構

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0747923B2 (ja) * 1989-06-30 1995-05-24 いすゞ自動車株式会社 可変バルブタイミング・リフト装置
JPH03151509A (ja) * 1989-11-09 1991-06-27 Fuji Heavy Ind Ltd 可変バルブタイミング式動弁装置
FR2663682B1 (fr) * 1990-06-21 1992-10-16 Peugeot Dispositif a amplitude variable pour la levee d'au moins une soupape de moteur a combustion interne.
FR2674287B1 (fr) 1991-03-19 1993-07-23 Peugeot Commande hydraulique pour mecanisme de levee a amplitude variable d'au moins une soupape de moteur a combustion interne.
JPH11247635A (ja) * 1998-02-27 1999-09-14 Aisin Seiki Co Ltd 内燃機関の可変動弁装置

Also Published As

Publication number Publication date
ATE281589T1 (de) 2004-11-15
FR2815377B1 (fr) 2003-02-07
EP1197640A1 (de) 2002-04-17
ES2232578T3 (es) 2005-06-01
DE60106843D1 (de) 2004-12-09
FR2815377A1 (fr) 2002-04-19
DE60106843T2 (de) 2005-11-10

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