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WO2000039435A1 - Dispositif d'entrainement pour une soupape d'un moteur a combustion interne - Google Patents

Dispositif d'entrainement pour une soupape d'un moteur a combustion interne Download PDF

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Publication number
WO2000039435A1
WO2000039435A1 PCT/EP1999/010325 EP9910325W WO0039435A1 WO 2000039435 A1 WO2000039435 A1 WO 2000039435A1 EP 9910325 W EP9910325 W EP 9910325W WO 0039435 A1 WO0039435 A1 WO 0039435A1
Authority
WO
WIPO (PCT)
Prior art keywords
drive according
lever
rotor
motor
valve
Prior art date
Application number
PCT/EP1999/010325
Other languages
German (de)
English (en)
Inventor
Heinz Leiber
Original Assignee
Heinz Leiber
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 Heinz Leiber filed Critical Heinz Leiber
Priority to DE59905115T priority Critical patent/DE59905115D1/de
Priority to EP99965540A priority patent/EP1144813B1/fr
Publication of WO2000039435A1 publication Critical patent/WO2000039435A1/fr

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
    • 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
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
    • F01L9/21—Valve-gear or valve arrangements actuated non-mechanically by electric means actuated by solenoids
    • F01L2009/2105—Valve-gear or valve arrangements actuated non-mechanically by electric means actuated by solenoids comprising two or more coils
    • F01L2009/2109—The armature being articulated perpendicularly to the coils axes

Definitions

  • the invention relates to a drive for a valve of an internal combustion engine with the features of the preamble of claim 1.
  • Such a drive is known from O98 / 42960.
  • the armature of an electromagnetic drive is integrated in the pivotable lever and the armature is assigned two electromagnets opposite, the excitation currents of which are switched on alternately.
  • Two opposing spring forces act on the armature or lever, which move the armature into an intermediate position without energizing the electromagnets. These spring forces in connection with the electromagnets bring the armature and thus the lever into pivoted end positions and thus bring about the valve movement.
  • the invention has for its object to further improve the drive in terms of its power requirements.
  • the drive according to the invention there is a uniform driving force over the entire stroke.
  • the actuator is easier to control when using position control, so that low valve attachment speeds can be achieved. This advantage is supported by a small time constant of the drive.
  • a variable stroke can be achieved in a simple manner.
  • the drive has a small moving mass and therefore low weight.
  • the rotary motor can be driven hydraulically. However, it is preferably an electric motor. As usual, this can be a fully designed motor, but it is also sufficient to train it as a segment motor.
  • the rotary motor brings its rotor and thus the lever to end positions by switching over the drive energy and holds the lever there according to the requirements. Moving into the end positions and holding on there will preferably be regulated. However, permanent magnets can also be provided in the end positions or electromagnets can be made effective which hold the drive in these end positions. The holding force can act on the lever between the axis of rotation and the valve stem (i ⁇ 1), but also beyond the valve stem (i ⁇ 1). Any rotary motors can be used, e.g. brushless DC motors, but also other motor principles with permanent magnetic rotor, switched reluctance motor or induction motor, in particular with segmented design of rotor and stator.
  • CONFIRMATION PIE As shown above, you can use a rotary motor that can be reversed in its drive direction and that only brings the lever into both end positions. However, it is also possible to use a motor that only drives in one direction and possibly. can only drive.
  • a spring force is required as a counterforce, against which the motor brings the lever into one end position. The spring takes over the return transport into the other end position, whereby the soft entry into the second end position can be regulated by a partial driving force.
  • a holding magnet is required at least for the second position.
  • a gearbox can also be interposed between the motor and the lever drive. If a motor is used that only drives in one direction, it is also possible to arrange a gear between the motor and the lever, which converts the rotary movement of the rotor into a back and forth movement for driving the lever.
  • the gearbox can, but does not have to be, switchable.
  • opposing spring forces can act on the lever or the rotor.
  • the spring force or the spring forces can be formed at least partially by a torsion spring. But tension or compression springs can also be provided, which at least partially form the spring forces.
  • a conventional valve spring can also contribute to the spring force / the spring forces.
  • valve stem to the lever can take place, as in the prior art mentioned at the outset, via an actuating rod articulated on the lever. Is more advantageous
  • CONFIRMATION COPY it to let the lever act directly on the valve stem, as this reduces the moving mass.
  • valve stem is connected to the lever via a joint and is designed to be flexible in at least one zone to compensate for misalignment, or when using a valve spring, the lever rests loosely on the valve stem, the friction between the lever and stem being caused by a slide or Role can be reduced. You can switch a play compensation element into the valve coupling in order to compensate for any play occurring.
  • the combination of a rotary motor and one or two holding magnets for the end positions, namely “fully open” and “fully closed valve”, is particularly advantageous for low power consumption. Since the rotary motor largely does the work for covering the friction and gas forces during the stroke, the holding magnet can essentially be designed for the holding forces of the valve. These are determined by the spring and gas forces. Since the holding magnet is only effective in the area of the end positions, the holding magnet circuit can be designed with only one excitation coil and poles for the two end positions.
  • Fig. 1 a drive according to the invention with a
  • CONFIRMATION COPY Fig. 2 shows a drive according to the invention with a permanent magnet rotor
  • Fig. 8 shows a brake energy recovery circuit
  • a valve stem to be driven is designated 1. It is articulated via an actuating rod 2 with a lever 3. The joint is formed by a ball bearing 4. The lever 3 is pivotally mounted at 5 and connected to a torsion spring 6 which generates two opposite spring forces.
  • a switch reluctance motor 7 designed as a segment motor is provided to generate the swiveling movements and consists of a stator 9 equipped with coils 8 and an iron rotor 10 having poles.
  • the rotor 10 has the same axis of rotation 5 as the lever 3 and is connected to the lever 3.
  • the left end of the lever could also be designed as a motor rotor.
  • the rotor By controlling the windings in one polarity of the drive current, the rotor is moved in one direction of rotation, with reverse polarity in the other direction.
  • a driving force is provided in only one direction.
  • the return to the other end position takes place through the return spring force (torsion spring), the armature being caught near the end position by the holding magnet.
  • This solution is e.g. B. cheap for an exhaust valve, since a large force is required to open the valve.
  • the rotor length and correspondingly also the associated stator length are preferably chosen to be very large compared to the rotor diameter.
  • the ratio is preferably greater than 2.
  • Fig. 2 differs from Fig. 1 once in that the valve stem 21 is connected directly to the lever 23 via a joint formed as a ball bearing 22 and that the valve stem 21 has a bending zone 21a to compensate for misalignment.
  • a motor 27 is provided which has an iron core 26 and a permanent magnet ring 28 on the rotor side. Coils 29 are applied to the stator. When driving with currents of different polarity, the rotor 26/28 swings out in different directions.
  • CONFIRMATION COPY 3a and 3b are compared drives with full training and sector training.
  • 3c shows a rotary magnet as the drive motor, the two windings 31 and 32 of which are actuated alternately in order to press the rotor 33 alternately into the two end positions.
  • FIG. 4 shows a hydraulic drive in which hydraulic fluid can be controlled in opposite directions via valves 40 into a hydraulic chamber 41, which moves a part connected to the lever 42 back and forth in the tube 41.
  • the holding magnets and the associated armature 51 are arranged differently in contrast to FIGS. 1 and 2. Once they are arranged to the left of the motor and the armature 51 acts on a lever extension 52 (Fig. 5a). In the case of FIG. 5b, the holding magnet 50a and 50b is divided in two and the armature 51 is arranged beyond the valve coupling 53.
  • the two spring forces are formed by a torsion spring 60, a valve spring 61 acting on the valve stem and an additional compression spring 62.
  • the torsion spring is omitted compared to FIG. 6a.
  • a slider 63 lies loosely on the valve stem.
  • a lash adjuster 74 is inserted between the slider 73 and valve stem 70.
  • the electric motor is designated 81. It is operated by a central controller 82 via a control circuit 83. In the event of braking, the central controller 82 opens a memory 80 for storing the recovered braking energy. This will be klen supplied to the control circuit for use via a coupling element 84.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrically Driven Valve-Operating Means (AREA)
  • Valve Device For Special Equipments (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

L'invention concerne un dispositif d'entraînement pour une soupape d'un moteur à combustion interne. Ce dispositif comprend un levier monté de manière à pouvoir pivoter et effectuant un mouvement de va-et-vient, qui agit sur la tige de soupape. Un moteur rotatif, dont l'axe de rotation coïncide avec l'axe de pivotement du levier, sert à produire le mouvement de pivotement. Le rotor du moteur rotatif est raccordé au levier pour transmettre le mouvement de rotation.
PCT/EP1999/010325 1998-12-28 1999-12-22 Dispositif d'entrainement pour une soupape d'un moteur a combustion interne WO2000039435A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE59905115T DE59905115D1 (de) 1998-12-28 1999-12-22 Antrieb für ein ventil eines verbrennungsmotors
EP99965540A EP1144813B1 (fr) 1998-12-28 1999-12-22 Dispositif d'entrainement pour une soupape d'un moteur a combustion interne

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19860451A DE19860451A1 (de) 1998-12-28 1998-12-28 Antrieb für ein Ventil eines Verbrennungsmotors
DE19860451.3 1998-12-28

Publications (1)

Publication Number Publication Date
WO2000039435A1 true WO2000039435A1 (fr) 2000-07-06

Family

ID=7892940

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1999/010325 WO2000039435A1 (fr) 1998-12-28 1999-12-22 Dispositif d'entrainement pour une soupape d'un moteur a combustion interne

Country Status (3)

Country Link
EP (1) EP1144813B1 (fr)
DE (2) DE19860451A1 (fr)
WO (1) WO2000039435A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005071817A1 (fr) 2004-01-23 2005-08-04 Heinz Leiber Moteur segmente
US11303171B2 (en) 2016-08-03 2022-04-12 Siemens Aktiengesellschaft Drive device

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2823529B1 (fr) * 2001-04-11 2003-07-04 Sagem Dispositif de commande de soupape a point mort
DE10139362A1 (de) * 2001-08-20 2003-03-06 Heinz Leiber Elektromagnetischer Aktuator
CN100507222C (zh) 2003-04-26 2009-07-01 卡姆肯有限公司 电磁阀致动器
DE10358936A1 (de) 2003-12-12 2005-07-07 Bayerische Motoren Werke Ag Elektrischer Ventiltrieb mit Drehaktuator
JP2006057521A (ja) * 2004-08-19 2006-03-02 Toyota Motor Corp 電磁駆動弁
DE102004042925A1 (de) * 2004-09-02 2006-03-09 Heinz Leiber Federnde Aktuatorankopplung
DE102005001221A1 (de) * 2005-01-10 2006-07-20 Heinz Leiber Elektromagnetischer Antrieb mit einem Permanentmagnete aufweisenden Läufer mit zusätzlichem Federelement
DE102006023654B3 (de) * 2006-05-18 2007-10-25 Esa Patentverwertungsagentur Sachsen-Anhalt Gmbh Anordnung zur Erzeugung einer nichtlinearen Kraft- bzw. Drehmomentkennlinie
DE102006023652B4 (de) * 2006-05-18 2008-10-30 Esa Patentverwertungsagentur Sachsen-Anhalt Gmbh Elektromotorische Einrichtung zur Betätigung von Gaswechselventilen
DE102009011867A1 (de) 2009-03-05 2010-09-09 Volkswagen Ag Spule sowie elektromotorische Ventilaktuatorik mit einer solchen Spule und Verfahren zu deren Herstellung
DE102015212793A1 (de) 2015-07-08 2017-01-12 Volkswagen Aktiengesellschaft Antrieb für ein Gaswechselventil einer Brennkraftmaschine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02259212A (ja) * 1989-03-30 1990-10-22 Nissan Motor Co Ltd 内燃機関の弁開閉装置
WO1998042960A1 (fr) 1997-03-24 1998-10-01 Lsp Innovative Automotive Systems Gmbh Dispositif d'entrainement electromagnetique
DE19825964A1 (de) * 1998-06-10 1999-12-16 Schaeffler Waelzlager Ohg Ventiltrieb einer Brennkraftmaschine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8530846D0 (en) * 1985-12-14 1986-01-22 Stidworthy F M Delayed tension valves

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02259212A (ja) * 1989-03-30 1990-10-22 Nissan Motor Co Ltd 内燃機関の弁開閉装置
WO1998042960A1 (fr) 1997-03-24 1998-10-01 Lsp Innovative Automotive Systems Gmbh Dispositif d'entrainement electromagnetique
DE19825964A1 (de) * 1998-06-10 1999-12-16 Schaeffler Waelzlager Ohg Ventiltrieb einer Brennkraftmaschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 15, no. 8 (M - 1067) 9 January 1991 (1991-01-09) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005071817A1 (fr) 2004-01-23 2005-08-04 Heinz Leiber Moteur segmente
US11303171B2 (en) 2016-08-03 2022-04-12 Siemens Aktiengesellschaft Drive device

Also Published As

Publication number Publication date
EP1144813A1 (fr) 2001-10-17
EP1144813B1 (fr) 2003-04-16
DE19860451A1 (de) 2000-06-29
DE59905115D1 (de) 2003-05-22

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