EP1561012A2 - Systeme d'actionneur rotatif servant a commander la levee de soupapes de changement des gaz dans la culasse d'un moteur a combustion - Google Patents

Systeme d'actionneur rotatif servant a commander la levee de soupapes de changement des gaz dans la culasse d'un moteur a combustion

Info

Publication number
EP1561012A2
EP1561012A2 EP03795783A EP03795783A EP1561012A2 EP 1561012 A2 EP1561012 A2 EP 1561012A2 EP 03795783 A EP03795783 A EP 03795783A EP 03795783 A EP03795783 A EP 03795783A EP 1561012 A2 EP1561012 A2 EP 1561012A2
Authority
EP
European Patent Office
Prior art keywords
rotary actuator
gas exchange
combustion engine
internal combustion
cylinder head
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.)
Granted
Application number
EP03795783A
Other languages
German (de)
English (en)
Other versions
EP1561012B1 (fr
Inventor
Karl-Heinz Gaubatz
Johannes Meyer
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke 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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP1561012A2 publication Critical patent/EP1561012A2/fr
Application granted granted Critical
Publication of EP1561012B1 publication Critical patent/EP1561012B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/08—Shape of cams
    • 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
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
    • 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
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
    • F01L9/22—Valve-gear or valve arrangements actuated non-mechanically by electric means actuated by rotary motors
    • 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

  • Rotary actuator device for stroke control of gas exchange valves in the cylinder head of an internal combustion engine
  • the invention relates to a rotary actuator device for stroke control of at least two equal-acting gas exchange valves in a cylinder head of an internal combustion engine according to the features in the preamble of claim 1.
  • a valve train for an internal combustion engine which is designed as a spring-mass vibration system. It essentially consists of a swivel motor with a shaft running longitudinally in the cylinder head and a lever-like excitation device for each gas exchange valve.
  • the excitation devices can be coupled to the shaft in accordance with the operating state of the internal combustion engine.
  • the swivel motor only executes a swivel movement in the sense of a stroke of the gas exchange valves.
  • the shaft and the excitation devices that can be coupled to it are quasi a camshaft with detachable cams.
  • valve train At the end of each cam, at the point of contact with the gas exchange valve, a roller is arranged to minimize friction.
  • valve train has two swivel motors mirrored to one another, each with an associated camshaft.
  • a disadvantage of the described embodiment are the large mass forces and the resulting moments that limit the maximum speed of the internal combustion engine.
  • the object of the present invention is therefore to reduce the moving masses in a generic valve train.
  • the moving masses in the valve train are advantageously reduced.
  • the reduction in mass also reduces the resulting moments and thus the mechanical load on the entire valve train, which enables higher speeds.
  • the internal friction of the valve train is significantly reduced, which reduces the fuel consumption of the internal combustion engine.
  • a compact small drive unit for two cylinders is created.
  • This unit can be expanded in conjunction with claim 9 to a modular concept, so that this unit can be used for any internal combustion engine whose number of cylinders per row of cylinders is divisible by 2.
  • a selective constructional adaptation to the respective internal combustion engine is not necessary with this modular construction.
  • the axes of the spark plug bores can be interleaved in the extension area of a device according to claim 8, in order to ensure that the ignition device, such as e.g. a spark plug to obtain the smallest possible compact unit for the rotary actuator device.
  • the size of a device is significantly reduced by this measure in the modular structure.
  • FIG. 1 shows a schematic representation of a top view of two rotary actuator devices installed on the intake and exhaust sides of a cylinder head of an internal combustion engine
  • FIG. 2 shows a schematic illustration of a side view of two rotary actuator devices installed on the intake and exhaust side on a cylinder head of an internal combustion engine.
  • the reference symbols in FIG. 1 also apply to the same components in FIG. 2.
  • FIG. 1 shows a schematic plan view of two rotary actuator devices 1, 1a installed on the intake and exhaust side on a cylinder head 4, an internal combustion engine (not shown), for stroke control of four gas exchange valves 2, 2 ', 3, 3' with the same effect.
  • the structure essentially consists of the first rotary actuator device 1 and the second rotary actuator device 1a, which is displaced parallel to the first.
  • the first bore 10 and the second bore 10 ' serve to receive an ignition device, not shown, for each cylinder.
  • the rotary actuator devices 1, 1a are identical in construction and differ only in the location of the installation.
  • the rotary actuator device 1 is provided for an inlet side, the rotary actuator device 1 a for an outlet side of the internal combustion engine. In the following, only the rotary actuator device 1 is explained in more detail, since all information can be transferred to the second rotary actuator device 1a.
  • the rotary actuator device 1 essentially has a first and a second, half mirror actuator 14, 14 'mirrored to one another for stroke control of two gas exchange valves having the same effect.
  • the first half rotary actuator device 14 consists of a first swivel motor 5 with a stationary first shaft 6, on which two first actuating elements 7, 7a are arranged in a stationary manner.
  • the first actuating elements 7, 7a here cams, interact with a respective first force transmission element 8, 8a.
  • the force transmission elements 8, 8a are each supported on a first lash adjuster 9, 9a and on the opposite side on a first gas exchange valve 2, 2 '. The same also applies to the second half rotary actuator device 14 '.
  • This consists of a second swivel motor 5 ', with a stationary second shaft 6'.
  • Two further second actuating elements 7 ', 7a' are arranged in a stationary manner on the second shaft 6 '. These interact with two second force transmission elements 8 ', 8a', which in turn relate to two second play same elements 9, 9a 'and on the other hand are supported on two second gas exchange valves 3, 3'.
  • the rotary actuator device 1 consisting of the first and the second half rotary actuator device 14, 14 ', is provided for two cylinders of the internal combustion engine.
  • Each half rotary actuator device 14, 14 "actuates two gas exchange valves having the same effect, here the inlet gas exchange valves for two cylinders of the internal combustion engine.
  • half a rotary actuator device 14, 14 ' can also be provided only for a single gas exchange valve. It is also possible to use half a rotary actuator device 14, 14 'for two cylinders, each with only one gas exchange valve having the same effect.
  • first gas exchange valves 2, 2 'and the second gas exchange valves 3, 3' lie on one line, as a result of which the first shaft 6 and the second shaft 6 'or the first and second half rotary actuator devices 14, 14' are parallel are aligned with each other.
  • the gas exchange valves can also assume a different position, which means that slightly different geometrical arrangements are conceivable.
  • the first power transmission elements 8, 8a and the second power transmission elements 8 ', 8a' are rocker arms, but rocker arms or roller rocker arms can also be used.
  • the first lash adjusters 9, 9a and the second lash adjusters 9 ', 9a' are hydraulic valve lash adjusters, which are preferably incorporated directly into the cylinder head 4. This enables a simple hydraulic supply. All features that are shown for the rotary actuator device 1 also apply to the second rotary actuator device 1 a.
  • FIG. 2 shows a schematic side view of the two rotary actuator devices 1, 1a. Between the rotary actuator device 1 and the second rotary actuator device 1a there is the first bore 10 for an ignition device (not shown) for the first cylinder. Since, as already described under FIG. 1, the two rotary actuator Devices 1 and 1 a are identical in construction and only point mirrored to one another, only the rotary actuator device 1 is again explained in more detail below.
  • an inlet gas exchange valve, the first half rotary anchor device 14, in proximity to the first bore 10, and the second half anchor valve 14 ', spaced further apart from the first bore 10, are next to one another on the cylinder head 4 attached.
  • a first stator 12 and a first rotor 13 can be seen on the first swivel motor 5, only the second stator 12 'can be seen on the second swivel motor 5', the second rotor 13 'of which is from the centrally arranged second shaft 6' and the second Actuator 7a 'covered.
  • the actuating element 7a ' lies on the schematically illustrated first force transmission element 8a'.
  • the force transmission element 8a ' is supported on the one hand on the play compensation element 9a' and on the other hand on the gas exchange valve 3, which is mounted in the cylinder head 4.
  • the gas exchange valve 3 is shown in the open position and closes an intake port 15 in the cylinder head 4 in a closed position.
  • the corresponding exhaust gas exchange valve 2 is also shown in the open position and closes an exhaust port 16 in the cylinder head 4 in the closed position.
  • the first stator 12 or the second stator 12 'does not enclose the first rotor 13 or the second rotor 13' radially over the entire circumference, but only to approximately 270 °.
  • the degree of enclosure is preferably greater than 180 °, but always less than 360 °, as a result of which the shafts 6, 6 'running parallel to one another are structurally closer. In addition to package advantages, this arrangement also brings weight advantages.
  • a further reduction in size is possible in that the first bore 10 with the first axis 11 and the second bore 10 'with the second axis 11' are interlocked with one another, since in the embodiment according to the invention a gas exchange valve and a play compensation element are located opposite one another on the inlet side and the outlet side, who have different space requirements.

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)

Abstract

L'invention concerne un système d'actionneur rotatif (1, 1a) servant à commander la levée d'au moins deux soupapes de changement des gaz (2, 2', 3, 3') à action équivalente situées dans la culasse (4) d'un moteur à combustion. Ce système comprend un premier moteur oscillant (5) pourvu d'un premier arbre (6) sur lequel est disposé au moins un premier élément d'actionnement (7, 7a), ainsi qu'un second moteur oscillant (5') pourvu d'un second arbre (6') sur lequel est disposé au moins un second élément d'actionnement (7', 7a'), un élément d'actionnement (7, 7a, 7', 7a') étant prévu pour au moins une soupape de changement des gaz (2, 2', 3, 3') et le premier et le second moteur oscillant (5, 5') étant disposés de façon symétrique par rapport à un point. L'invention se caractérise en ce qu'un élément de transmission de force (8, 8a, 8', 8a') est disposé entre l'élément d'actionnement (7, 7a, 7', 7a') et la soupape de changement des gaz (2, 2', 3, 3'). Cette disposition dans le mécanisme de distribution permet de réduire les masses déplacées et, par là même, d'obtenir des régimes plus élevés lors du fonctionnement du moteur à combustion.
EP03795783A 2002-11-14 2003-10-15 Systeme d'actionneur rotatif servant a commander la levee de soupapes de changement des gaz dans la culasse d'un moteur a combustion Expired - Lifetime EP1561012B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10252997A DE10252997A1 (de) 2002-11-14 2002-11-14 Drehaktor-Vorrichtung zur Hubsteuerung von Gaswechselventilen im Zylinderkopf einer Brennkraftmaschine
DE10252997 2002-11-14
PCT/EP2003/011408 WO2004044391A2 (fr) 2002-11-14 2003-10-15 Systeme d'actionneur rotatif servant a commander la levee de soupapes de changement des gaz dans la culasse d'un moteur a combustion

Publications (2)

Publication Number Publication Date
EP1561012A2 true EP1561012A2 (fr) 2005-08-10
EP1561012B1 EP1561012B1 (fr) 2008-12-10

Family

ID=32185631

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03795783A Expired - Lifetime EP1561012B1 (fr) 2002-11-14 2003-10-15 Systeme d'actionneur rotatif servant a commander la levee de soupapes de changement des gaz dans la culasse d'un moteur a combustion

Country Status (4)

Country Link
US (1) US7007647B2 (fr)
EP (1) EP1561012B1 (fr)
DE (2) DE10252997A1 (fr)
WO (1) WO2004044391A2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005033653B3 (de) * 2005-07-19 2006-11-30 Dr.Ing.H.C. F. Porsche Ag Zwangsgesteuerter Ventiltrieb für eine Brennkraftmaschine
DE102006005943A1 (de) * 2006-02-09 2007-08-23 Bayerische Motoren Werke Ag Verbrennungsmotor mit einem elektrischen Ventiltrieb
DE102006013100A1 (de) * 2006-03-20 2007-09-27 Lsp Innovative Automotive Systems Gmbh Segmentmotor für Ventiltrieb
DE102006023652B4 (de) * 2006-05-18 2008-10-30 Esa Patentverwertungsagentur Sachsen-Anhalt Gmbh Elektromotorische Einrichtung zur Betätigung von Gaswechselventilen
GB2447034A (en) * 2007-02-28 2008-09-03 Dakota Ltd Gibraltar Camshaft Drive

Family Cites Families (14)

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Publication number Priority date Publication date Assignee Title
GB1201214A (en) * 1968-02-01 1970-08-05 Ford Motor Co Overhead camshaft internal combustion engine
DE3203791A1 (de) 1982-02-04 1983-08-11 Volkswagenwerk Ag, 3180 Wolfsburg Ventiltrieb, insbesondere fuer eine kraftfahrzeug-brennkraftmaschine
DE3210165A1 (de) * 1982-03-19 1983-09-29 Bayerische Motoren Werke AG, 8000 München Ventiltrieb
DE3932293C1 (fr) * 1989-09-28 1991-01-24 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De
DE4212263A1 (de) * 1992-04-11 1993-10-14 Bayerische Motoren Werke Ag Schaltvorrichtung für Hubventile einer Brennkraftmaschine
JPH0726911A (ja) * 1993-05-13 1995-01-27 Sumitomo Electric Ind Ltd カムシャフト
DE4327068A1 (de) * 1993-08-12 1995-02-16 Bayerische Motoren Werke Ag Ventiltrieb einer Brennkraftmaschine
CA2122188A1 (fr) * 1994-04-26 1995-10-27 Peter Hinsperger Serre aeree grace a des toiles
JP3354314B2 (ja) 1994-09-30 2002-12-09 本田技研工業株式会社 エンジンのカム軸支持構造
DE19825964A1 (de) * 1998-06-10 1999-12-16 Schaeffler Waelzlager Ohg Ventiltrieb einer Brennkraftmaschine
EP0979928A1 (fr) * 1998-08-11 2000-02-16 Wenko AG Burgdorf Moteur à combustion interne avec entrainement des soupapes avec culbuteurs
US6446589B1 (en) * 2001-01-16 2002-09-10 Chinh T. Nguyen Cam actuated continuous simultaneously variable valve timing and lifting assembly
DE10140461A1 (de) * 2001-08-17 2003-02-27 Bayerische Motoren Werke Ag Drehaktor-Vorrichtung zur Hubsteuerung eines Gaswechselventils im Zylinderkopf einer Brennkraftmaschine
US6722326B1 (en) * 2002-10-14 2004-04-20 Ford Global Technologies, Llc Variable lift cylinder valve system for internal combustion engine

Non-Patent Citations (1)

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Title
See references of WO2004044391A2 *

Also Published As

Publication number Publication date
DE50310913D1 (de) 2009-01-22
US7007647B2 (en) 2006-03-07
WO2004044391A2 (fr) 2004-05-27
EP1561012B1 (fr) 2008-12-10
US20050211211A1 (en) 2005-09-29
WO2004044391A3 (fr) 2004-06-17
DE10252997A1 (de) 2004-05-27

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