EP0579932A1 - Dispositif de commande de papillon de moteur à combustion interne - Google Patents

Dispositif de commande de papillon de moteur à combustion interne Download PDF

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Publication number
EP0579932A1
EP0579932A1 EP93108635A EP93108635A EP0579932A1 EP 0579932 A1 EP0579932 A1 EP 0579932A1 EP 93108635 A EP93108635 A EP 93108635A EP 93108635 A EP93108635 A EP 93108635A EP 0579932 A1 EP0579932 A1 EP 0579932A1
Authority
EP
European Patent Office
Prior art keywords
throttle valve
piezo
actuator
actuating device
cylinder
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
EP93108635A
Other languages
German (de)
English (en)
Other versions
EP0579932B1 (fr
Inventor
Hansjürgen Prof. Dr.-Ing. Linde
Gero Kempf
Manfred Gruber
Jörg Johannsen
Günter Dr. Seeser
Karl Heinz Menzl
Achim Espitte
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 EP0579932A1 publication Critical patent/EP0579932A1/fr
Application granted granted Critical
Publication of EP0579932B1 publication Critical patent/EP0579932B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
    • F02D31/001—Electric control of rotation speed
    • F02D31/002—Electric control of rotation speed controlling air supply
    • F02D31/003—Electric control of rotation speed controlling air supply for idle speed control
    • F02D31/004—Electric control of rotation speed controlling air supply for idle speed control by controlling a throttle stop
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D11/00—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated
    • F02D11/06—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D11/00—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated
    • F02D11/06—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance
    • F02D11/10—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M3/00—Idling devices for carburettors
    • F02M3/06—Increasing idling speed
    • F02M3/07—Increasing idling speed by positioning the throttle flap stop, or by changing the fuel flow cross-sectional area, by electrical, electromechanical or electropneumatic means, according to engine speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D11/00—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated
    • F02D11/06—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance
    • F02D11/10—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type
    • F02D2011/101—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type characterised by the means for actuating the throttles
    • F02D2011/103—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type characterised by the means for actuating the throttles at least one throttle being alternatively mechanically linked to the pedal or moved by an electric actuator

Definitions

  • the invention relates to an actuating device for a throttle valve of an internal combustion engine, in particular for idling control, with an actuator acting on the throttle valve via a transmission element.
  • Throttle valves of internal combustion engines are actuated in various ways in the known prior art.
  • an operator can act directly on a lever attached to the throttle valve axis via a cable or linkage, the throttle valve being reset to its closed position mostly via a spring element.
  • an electromotive actuation of a throttle valve is also known. It is also known to also set the so-called idle point of the internal combustion engine by means of an electric motor by corresponding actuation of the throttle valve.
  • the throttle valve is only opened to such an extent that the internal combustion engine is running at the desired idling speed.
  • an electric motor-operated throttle valve actuator for idle control cf. DE-OS 29 42 443
  • throttle valve actuators operated by negative pressure for example from DE-OS 38 42 397.
  • throttle valve actuators actuated by negative pressure operate relatively imprecisely and with a high time delay, and electric motor-operated throttle valve actuators require high construction costs and, moreover, require a large amount of installation space
  • the invention has set itself the task of an actuator for actuating an internal combustion engine throttle valve to show that on the one hand works precisely and quickly and on the other hand requires little installation space.
  • a piezoelectric or magnetostrictive actuator which is further developed in the subclaims, inter alia, with regard to a transmission element which translates the small deflection of a piezoceramic or a magnetostrictive material into a sufficient throttle valve actuating movement.
  • Piezoelectric actuators or actuators are characterized by an extremely fast response behavior and by the highest precision with regard to the movement carried out in accordance with an excitation. Furthermore, conventional piezo actuators require so little installation space that they can be attached to a conventional internal combustion engine throttle body in a simple manner, including a suitable transmission element. Although the use of a piezo element in connection with a throttle valve actuation is known from DE-OS 38 42 397 mentioned above, this piezo element is only used there for a connection between the throttle valve actuator and the throttle valve lever to interrupt. An operation of the throttle lever or the throttle valve by the piezo element itself is not provided there.
  • a piezoelectric actuator i. H.
  • a piezoceramic a piezoceramic
  • a magnetostrictive actuator can also be used.
  • Such metallic alloys react to changes in an applied magnetic field similar to the piezo-oxide actuators when the applied electrical voltage changes. Therefore, only piezoelectric actuators will be spoken of in the following, and the same explanations should also apply to magnetostrictive materials, for example Terfenol.
  • a so-called piezo-hydraulic pressure cell can be used.
  • This embodiment is particularly suitable for realizing an idle control via a throttle valve actuation.
  • This piezo-hydraulic pressure cell has a hydraulic volume that can be changed by electrical control of piezo elements.
  • This hydraulic volume is hydraulically connected to a cylinder-piston unit, whereby a hydraulic ratio can be realized.
  • the cylinder-piston unit serves as the so-called transmission member and ultimately actuates the throttle valve or the throttle valve lever attached to the throttle valve axis.
  • the side walls of this piezo-hydraulic pressure cell are preferably formed by so-called piezo-bimorph disks, which bend when an electrical voltage is applied and thus enlarge or reduce the volume of this pressure cell.
  • piezo bimorph disks can also be spatially connected in series, thereby forming several hydraulic individual chambers. Considered individually, only a small change in volume is achieved, but in total, a sufficient change in volume can be achieved when all piezo elements are actuated. Utilizing the hydraulic transmission, such a transmission element requires only a relatively small installation space, so that it is possible to attach this pressure cell in particular with its frame to the throttle valve socket receiving the throttle valve, as the exemplary embodiment explained later shows in more detail.
  • the transmission element is designed as a vocational step transmission, which is actuated in particular by high-performance piezo-oxide actuators.
  • a vocational step transmission which is actuated in particular by high-performance piezo-oxide actuators.
  • Such a vocational gearbox virtually integrates a large number of individual movements of a piezo element in one direction.
  • this embodiment can also only be used for idle control.
  • two piezo oxide actuators can act in mirror image on an actuating cylinder, which in turn forms the so-called throttle valve actuator and is thus arranged coaxially rotatable with respect to the throttle valve axis. If the throttle valve is to be opened, the first piezo-oxide actuator is actuated while the second actuator is lifted from the actuating cylinder; if the throttle valve is to be actuated in the closing direction, the second actuator is acted upon and the first actuator is lifted from the actuating cylinder.
  • a lifting magnet can be provided in each case, which counteracts a compression spring that presses the moving stamp of the piezo actuators against the actuating cylinder.
  • Reference number 1 denotes a throttle valve assembly of an internal combustion engine.
  • a throttle valve 3 is rotatably supported via the axis 2.
  • this throttle valve is operated as is known, i.e. on the throttle valve axis 2, two sheaves 4 are fastened, which accommodate the cables.
  • a return spring 5 which tends to move the throttle valve 3 into its closed position.
  • the rope pulley 4 is supported when the throttle valve 3 is closed on a shoulder 6a of an actuating cylinder 6 which is rotatable coaxially to the throttle valve axis 2.
  • This paragraph 6a is also referred to as the stop of the actuating cylinder 6, also referred to as the throttle valve actuator. If the actuating cylinder is thus rotated slightly in the direction of the arrow 7 in FIG. 2, the throttle valve 3 is opened slightly; a rotation against the direction of arrow 7 causes the throttle valve to close at least slightly.
  • the idle control of the internal combustion engine can also be carried out by rotating the actuating cylinder 6.
  • the moving punches 8a of two high-performance piezo-oxide actuators 8 act essentially tangentially on the wall of the actuating cylinder 6.
  • Such so-called PXE actuators are offered by Philipps-Valvo and are able to perform deflections of up to 100 micrometers in the millisecond range.
  • the moving pistons 8a of the actuators 8 are pressed against the wall of the actuating cylinder 6 by a compression spring 9 each.
  • each actuator 8 coaxially to the compression spring 9 engages a driving pin 10 which can be acted upon by a lifting magnet 11 in such a way that when this lifting magnet 11 is excited, the plunger 8a of the actuator 8 is lifted off the wall of the actuating cylinder 6.
  • the actuating cylinder 6 is thus rotated slightly according to arrow 7.
  • This right-hand piezo actuator 8 is then acted on in the opposite direction, ie the plunger performs a micro movement in the opposite direction of the arrow 12.
  • the right-hand piezo actuator 8 is then electrically acted upon again analogously to the first actuation, so that the plunger 8a again moves in the direction of the arrow 12.
  • the described actuating device for the throttle valve 3, consisting of the high-performance piezo-oxide actuators 8 as the piezoelectric actuator and a so-called mit step transmission as the transmission element, can be structurally attached in a simple manner to a throttle valve connector 1 of an internal combustion engine. All that is required for this is the retaining bracket designated with the reference number 13.
  • the space requirement of this actuating device is extremely small, moreover, as already explained at the beginning, this actuating device has the advantages of high precision and minimal time delay. Explicitly pointed out should be that with the help of such an actuating device not only the idle control can be realized on a throttle valve, but the entire actuation of the throttle valve can take place over the entire operating range of the internal combustion engine.
  • the piezoelectric actuator is designed as a so-called piezo-hydraulic pressure cell 20, while the transmission element is essentially formed by a cylinder-piston unit 21.
  • the same components as in Figures 1, 2 are also designated here with the same reference numerals.
  • the piezohydraulic pressure cell 20 which is shown in detail in particular in FIG. 5, consists of a cube-shaped frame 22, the side surfaces of which have circular openings 23. Each opening 23 is covered by a piezo bimorph disk 24. This pressure cell is completely filled with a suitable hydraulic fluid.
  • the piezo bimorph disks 24, which are also referred to as PXE bending elements (membranes), are described in more detail, for example, in the Philipps manual "Piezoxides - Properties and Applications" and have the property of changing their shape when subjected to electrical voltage, that a change in volume occurs.
  • this change in pressure and volume is caused by the designed as a cylinder-piston unit 21 transfer member.
  • the numerical values given in the paragraph above result in a positioning force of 9.3 N for a piston diameter of 2.2 mm and an achievable stroke of 10 mm. Since the piston of the cylinder-piston unit 21 acts on the stop of the throttle valve actuator or on the shoulder 6a of the actuating cylinder 6, the throttle valve can also be actuated by this, as desired, in particular for idling control.
  • FIG. 5 shows support rings 26 arranged between the piezo bimorph discs 24 and the frame 22.
  • the piezo bimorph discs 24 are soldered or glued to these support rings 26; the same connection technology is available between the support rings 26 and the frame 22.
  • a bellows 27 lying completely against its sides and thus also completely against the piezo bimorph disks 24 is further provided within this pressure cell 20.
  • this embodiment shown is only a preferred embodiment; In addition, there are of course a variety of other designs possible.
  • a piezohydraulic pressure cell could also contain a large number of piezo-bimorph displacement modules arranged one behind the other in a simple housing, in order also to achieve a pressure increase and a relatively large volume displacement when an electrical voltage is applied.
  • an extremely compact design is always possible with such a piezohydraulic pressure cell - as well as with the high-performance piezo-oxide actuators described at the outset, which operate via a pilgrim step transmission.
  • this pressure can 20 can also be easily attached to the throttle valve connector 1, in particular with its frame 22.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Electrically Driven Valve-Operating Means (AREA)
EP93108635A 1992-07-24 1993-05-28 Dispositif de commande de papillon de moteur à combustion interne Expired - Lifetime EP0579932B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4224424 1992-07-24
DE4224424A DE4224424C1 (de) 1992-07-24 1992-07-24 Betätigungsvorrichtung für eine Brennkraftmaschinen-Drosseleinrichtung

Publications (2)

Publication Number Publication Date
EP0579932A1 true EP0579932A1 (fr) 1994-01-26
EP0579932B1 EP0579932B1 (fr) 1995-07-05

Family

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EP93108635A Expired - Lifetime EP0579932B1 (fr) 1992-07-24 1993-05-28 Dispositif de commande de papillon de moteur à combustion interne

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EP (1) EP0579932B1 (fr)
DE (2) DE4224424C1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1031718A3 (fr) * 1999-02-24 2001-01-24 Mikuni Corporation Dispositif de commande de papillon pour moteur à combustion
KR100448806B1 (ko) * 2002-05-17 2004-09-16 현대자동차주식회사 스로틀 밸브 제어 장치 및 그 방법

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7159563B1 (en) * 2005-10-28 2007-01-09 Delphi Technologies, Inc. Piezo electronic throttle control actuator

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR91906E (fr) * 1965-09-08 1968-08-30 Dispositif de commande pour les appareils de désintoxication des gaz d'échappement des moteurs à allumage commandé
USRE32413E (en) * 1981-04-15 1987-05-12 Nissan Motor Company, Limited Two-shift throttle control system for automotive internal combustion engine
JPH01203620A (ja) * 1988-02-09 1989-08-16 Kiyousan Denki Kk エンジンのアイドル回転制御装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2690977B2 (ja) * 1988-03-18 1997-12-17 株式会社日立製作所 内燃機関用電子制御式スロットルバルブ
DE3842397A1 (de) * 1988-12-16 1990-06-21 Audi Ag Vorrichtung zum unterbrechen des kraftschlusses zwischen zwei bauteilen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR91906E (fr) * 1965-09-08 1968-08-30 Dispositif de commande pour les appareils de désintoxication des gaz d'échappement des moteurs à allumage commandé
USRE32413E (en) * 1981-04-15 1987-05-12 Nissan Motor Company, Limited Two-shift throttle control system for automotive internal combustion engine
JPH01203620A (ja) * 1988-02-09 1989-08-16 Kiyousan Denki Kk エンジンのアイドル回転制御装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 013, no. 506 (M - 892) 14 November 1989 (1989-11-14) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1031718A3 (fr) * 1999-02-24 2001-01-24 Mikuni Corporation Dispositif de commande de papillon pour moteur à combustion
KR100448806B1 (ko) * 2002-05-17 2004-09-16 현대자동차주식회사 스로틀 밸브 제어 장치 및 그 방법

Also Published As

Publication number Publication date
EP0579932B1 (fr) 1995-07-05
DE59300329D1 (de) 1995-08-10
DE4224424C1 (de) 1993-12-09

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