WO2002014679A1 - Dispositif d'actionnement piezo-electrique, permettant notamment d'actionner une soupape dans un vehicule - Google Patents
Dispositif d'actionnement piezo-electrique, permettant notamment d'actionner une soupape dans un vehicule Download PDFInfo
- Publication number
- WO2002014679A1 WO2002014679A1 PCT/DE2001/002950 DE0102950W WO0214679A1 WO 2002014679 A1 WO2002014679 A1 WO 2002014679A1 DE 0102950 W DE0102950 W DE 0102950W WO 0214679 A1 WO0214679 A1 WO 0214679A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- actuator
- lifting body
- arrangement
- housing
- longitudinal end
- Prior art date
Links
- 239000000463 material Substances 0.000 claims abstract description 34
- 239000004020 conductor Substances 0.000 claims description 40
- 239000002184 metal Substances 0.000 claims description 10
- 239000012777 electrically insulating material Substances 0.000 claims description 4
- 230000001154 acute effect Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000000243 solution Substances 0.000 description 5
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005476 soldering Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000007743 anodising Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- 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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/0014—Valves characterised by the valve actuating means
- F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
- F02M63/0026—Valves characterised by the valve actuating means electrical, e.g. using solenoid using piezoelectric or magnetostrictive actuators
-
- 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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/005—Arrangement of electrical wires and connections, e.g. wire harness, sockets, plugs; Arrangement of electronic control circuits in or on fuel injection apparatus
-
- 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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/0603—Injectors peculiar thereto with means directly operating the valve needle using piezoelectric or magnetostrictive operating means
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/80—Constructional details
- H10N30/87—Electrodes or interconnections, e.g. leads or terminals
- H10N30/875—Further connection or lead arrangements, e.g. flexible wiring boards, terminal pins
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/80—Constructional details
- H10N30/88—Mounts; Supports; Enclosures; Casings
Definitions
- Piezoelectric actuator arrangement in particular for actuating a valve in a motor vehicle
- the invention relates to a piezoelectric actuator arrangement, in particular for actuating a valve in a motor vehicle, comprising an actuator housing with a housing axis and a receiving opening that is axially open at one end and closed at the other end, an axially elongated, with a first longitudinal end ahead through the open one End of the receiving opening into this insertable lifting body made of piezoelectric material, an electrode arrangement applied to the piezoelectric material and electrical supply means for supplying voltage to the electrode arrangement.
- Piezoelectric actuators are used, for example, for valve actuation in fuel injection systems in motor vehicles.
- it is necessary to contact the electrode Arrangement of the piezo material is known to solder or weld electrical conductor wires in the region of the first longitudinal end of the lifting body to the electrode arrangement and to guide the conductor wires to the outside through a housing bore in the region of the closed end of the receiving opening of the actuator housing.
- the first longitudinal end of the lifting body is supported in the area of the closed end of the receiving opening against axial movements, while the axially opposite second longitudinal end of the lifting body forms a lifting end which carries out axial strokes when the voltage is applied to the electrode arrangement.
- the conductor wires are fastened to the lifting body in the region of the first longitudinal end because this prevents the conductor wires from moving along and possibly causing cracks in the soldering or welding points.
- the invention provides that in the case of an actuator arrangement of the type described in the introduction, the supply means are contacted with the electrode arrangement in the region of the first longitudinal end of the lifting body, from there within the receiving opening along the lifting body at least up to approximately the area of an axially opposite second longitudinal end of the Lift body run and are then led out of the actuator housing through an outlet channel.
- the space available at the installation location of the actuator arrangement often requires that a plug connection serving to connect a voltage supply cable be arranged in a region of the actuator housing close to the first longitudinal end of the lifting body.
- the outlet channel in the housing wall of the actuator housing can run approximately parallel or at an acute angle to the housing axis in the direction from the second longitudinal end of the lifting body to the first longitudinal end and extend beyond the latter.
- a preferred development of the invention provides that the supply means are formed at least over a substantial part of their length running within the receiving opening by a strip material arrangement made of sheet metal.
- the rigidity of the sheet ensures that the lifting body can be inserted safely and precisely into the receiving opening without the parts of the supply means located within the receiving opening hindering this by undesired tangling, as can occur with conductor wires, for example.
- the strip material arrangement preferably extends into the region of the first longitudinal end of the lifting body and is contacted there with the electrode arrangement, in particular on the outer jacket of the lifting body.
- the strip material arrangement can be soldered or welded to the electrode arrangement. A permanently secure electrical contact results if the
- the electrode arrangement surrounds the strip material arrangement for contacting it on the edge.
- the strip material arrangement will expediently be covered with an electrically insulating material layer on at least part of its side facing the lifting body.
- an actuator housing made of a metallic material
- the strip material arrangement should advantageously extend axially at least up to approximately in the region of the second longitudinal end of the lifting body, preferably even extending beyond it.
- a conductor wire arrangement led out of the actuator housing through the outlet channel can then be connected to the strip material arrangement within the receiving opening.
- the strip material arrangement has at least one U-shaped pocket into which the conductor wire arrangement engages.
- the conductor wire arrangement can also be soldered or welded in the pocket.
- the actuator housing will have a configuration in which it extends axially substantially beyond the second longitudinal end of the lifting body.
- the housing areas axially beyond the lifting body can serve, for example, to accommodate a plunger or piston which transmits the axial strokes of the lifting body. If a one-piece actuator housing is used in such a case, access to the conductor wire arrangement can be difficult if the lifting body is already fully inserted into the actuator housing. It may then have to be reached deep into the actuator housing in order to get hold of the conductor wire arrangement.
- the actuator housing with two housing parts which are divided axially, in particular approximately in the region of the second longitudinal end of the lifting body, one of which at least largely accommodates the lifting body and the other essentially the part of the actuator which extends beyond the second longitudinal end of the lifting body.
- the supply means extend over part of their length in a connector component which is prefabricated separately from the actuator housing and which can be fixedly but detachably mounted on the actuator housing and forms a plug connection for a voltage supply cable.
- a connector component which is prefabricated separately from the actuator housing and which can be fixedly but detachably mounted on the actuator housing and forms a plug connection for a voltage supply cable.
- this facilitates the manufacture of the Plug component itself, on the other hand, this enables a separate test of the plug component, for example with regard to electrical properties and tightness against moisture penetration. If it turns out during this test that the plug component is faulty, it can be thrown away as a committee without having to throw away the actuator housing at the same time, as may be necessary in the known solution with a molded plug. If necessary, the plug component can also be replaced at a later time if it suffers damage during operation.
- the invention relates to The right to claim independent protection is reserved, regardless of the specific course of the supply means in the actuator housing and regardless of the specific design of the supply means.
- a very good seal between the plug component and the actuator housing can be achieved if the plug component has a plug housing with a housing extension, in particular molded on in one piece, with which it engages in the outlet channel.
- the housing extension can be used as a positioning aid for correct right positioning of the connector component relative to the actuator housing.
- the housing extension is designed as an elongated mandrel, which extends essentially through the entire outlet channel and, if desired, extends into the receiving opening of the actuator housing, the feed means running through the mandrel. This measure ensures a particularly simple assembly of the actuator arrangement because the housing mandrel can be very easily inserted into the outlet channel from the outside.
- FIG. 1 shows an axial longitudinal section through an exemplary embodiment of the actuator arrangement according to the invention
- Figure 2 shows a section corresponding to II-II of Figure 1;
- Figure 3 is an enlargement of a section A of Figure 2.
- FIG. 4 shows an enlargement of a section B of FIG. 2. Description of the embodiment
- the actuator arrangement shown in the figures serves to actuate a control or injection valve (not shown in more detail) in a fuel injection system, for example a common rail diesel injection system. It comprises a cylindrical actuator housing 10 with a housing axis 12 and an axial receiving opening 14.
- the actuator housing 10 can be made of a metal, preferably steel, which will be the case especially if it contains channels which are part of a high-pressure line system for Are fuel. Manufacturing from plastic is, however, by no means excluded within the scope of the invention.
- An axially elongated lifting body 16 made of piezoelectric material is inserted into the actuator housing 10 through an open axial end of the receiving opening 14.
- the lifting body 16 In the area of a closed bag end of the receiving opening 14, the lifting body 16 is axially immovably supported on the actuator housing 10 with a first axial end, generally designated 18. With its axially opposite end 20, the lifting body 16 carries out axial lifting movements when an electrical voltage is applied to the piezo material, which are transmitted to an actuating plunger or piston, also not shown, which is also accommodated in the actuator housing 10.
- the lifting body 16 In order to achieve the largest possible axial strokes, the lifting body 16 is formed from a large number of individual layers of piezo material stacked axially one above the other, between which thin metal layers are located. Find. The metal layers are alternately connected to two flat electrodes 22 arranged on the outer jacket of the lifting body 16, which serve to supply voltage to the metal layers. Details of such a lifting body can be found, for example, in DE 199 09 452 Cl.
- each of the electrodes 22 is contacted near the immovable lifting body end 18 with a strip-shaped conductor plate 24 which extends axially to the lifting body end 20 and somewhat beyond.
- the electrodes 22 are placed around the narrow edges of the metal strips 24 in order to ensure better contact.
- the conductor plates 24 are provided on their two flat sides with an insulating layer 28, for example a glued-on insulating tape or an anodizing layer, in order to avoid electrical malfunctions when the metallic housing wall or the piezo material of the lifting body 16 comes into contact ,
- the conductor plates 24 can be spaced from the outside of the lifting body. pers 16. Due to their insulation, however, they can also nestle against the outside of the lifting body 16.
- the ends of the conductor plates 24 projecting beyond the lifting body 16 are bent into a U-shape to form pockets 30 which are used for connecting conductor wires 32.
- the contact between the conductor wires 32 and the pockets 30 can be established, for example, by placing the conductor wires 32 in the pockets 30 and clamping them there by squeezing the pockets 30 together. Of course, welding or soldering the conductor wires 32 in the pockets 30 is also possible.
- a housing bore 34 serving as an outlet channel is machined into the actuator housing 10 at a small acute angle to the axis 12.
- the housing bore 34 extends away from the lifting body end 20 axially beyond the lifting body end 18 and leads beyond this lifting body end 18 out of the actuator housing 10.
- the housing bore 34 is facilitated in that it opens out on an axial end face, which in the present example is formed by an annular shoulder 36 in an axial end region 38 of the actuator housing 10.
- the conductor wires 32 end in a connector component, generally designated 40, which has a Plug connection 42 is designed for a voltage supply cable, not shown, coming from an actuator control.
- the plug component 40 is a component manufactured separately from the actuator housing 10. It has a connector housing 44 made of plastic, preferably in an injection molding process, with a retaining ring 46, with which it can be axially attached to the axial end region 38 of the actuator housing 10 and clamped thereon, for example, by means of a clamping screw 48 indicated by a broken line.
- the annular shoulder 36 serves as an axial positioning stop for the plug component 40.
- An elongate, spike-like housing extension 50 is formed in one piece with the plug housing 44, which engages with a precise fit in the housing bore 34 and extends through this into the receiving opening 14. In this way, a high degree of tightness against the ingress of dirt or moisture into the receiving opening 14 is achieved.
- the conductor wires 32 are an integral part of the plug component 40. They run in the mandrel 50 and emerge from its tip which projects into the receiving opening 14.
- the plug component 40 is inserted with its mandrel 50 into the housing bore 34, and the lifting body 16 prepared with the conductor plates 24 is inserted into the receiving opening 14. Then the run out of the mandrel 50 the ends of the conductor wires 32 contacted with the pockets 30 of the conductor plates 24.
- the actuator housing 10 is of axially multi-part design.
- first housing part 52 which is dimensioned axially in such a way that the lifting body 16 can be accommodated therein at least for the most part.
- a second housing part 54 axially connects to the first housing part 52. It extends far beyond the lifting body end 20 and is used, for example, to accommodate the actuating plunger mentioned above.
- the housing bore 34 is located on the first housing part 52, so that first the plug component 40 can be mounted on the first housing part 52 and the connection of the conductor wires 32 to the metal sheets 24 can be made before the second housing part 54 and possibly further housing parts on the first housing part 52 are grown.
- the first housing part 52 extends axially essentially to the lifting body end 20, the pockets 30 projecting axially beyond it, as can be seen particularly well in FIG. 4. The soldering, welding or clamping work on the pockets 30 can thus be carried out without hindrance.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
La présente invention concerne un dispositif d'actionnement piézo-électrique, comprenant un boîtier d'actionneur (10), une ouverture de réception (14), qui est ouverte à une extrémité de manière axiale, un corps de levage (16), qui est allongé de manière axiale, est constitué d'un matériau piézo-électrique et peut être introduit dans ladite ouverture de réception, un dispositif d'électrode (22), qui est appliqué sur le matériau piézo-électrique, ainsi que des systèmes d'alimentation électrique (24, 32), qui permettent l'alimentation en tension. Selon cette invention, ces systèmes d'alimentation (24, 32) sont mis en contact avec le dispositif d'électrode (22), dans la zone de la première extrémité longitudinale (18) du corps de levage, s'étendent depuis cette zone, le long du corps de levage, au moins jusqu'à proximité de la zone d'une seconde extrémité longitudinale (20), qui est opposée de manière axiale, puis sortent par un canal de sortie.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10039218.0 | 2000-08-11 | ||
DE10039218A DE10039218A1 (de) | 2000-08-11 | 2000-08-11 | Piezoelektrische Aktuatoranordnung, inbesondere zur Betätigung eines Ventils in einem Kraftfahrzeug |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002014679A1 true WO2002014679A1 (fr) | 2002-02-21 |
Family
ID=7652079
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2001/002950 WO2002014679A1 (fr) | 2000-08-11 | 2001-08-09 | Dispositif d'actionnement piezo-electrique, permettant notamment d'actionner une soupape dans un vehicule |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE10039218A1 (fr) |
WO (1) | WO2002014679A1 (fr) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007023047A1 (fr) * | 2005-08-25 | 2007-03-01 | Robert Bosch Gmbh | Ensemble comprenant un actionneur piezoelectrique |
CN100376784C (zh) * | 2003-01-24 | 2008-03-26 | 西门子Vdo汽车公司 | 用于定量供应加压流体的计量装置 |
JP2008202407A (ja) * | 2007-02-16 | 2008-09-04 | Denso Corp | インジェクタの製造方法 |
WO2010092170A1 (fr) * | 2009-02-16 | 2010-08-19 | Continental Automotive Gmbh | Actionneur piézoélectrique, procédé de production de l'actionneur et injecteur |
EP2713040A1 (fr) * | 2012-09-26 | 2014-04-02 | Delphi International Operations Luxembourg S.a.r.l. | Connecteur électrique |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1445470A1 (fr) * | 2003-01-24 | 2004-08-11 | Siemens VDO Automotive S.p.A. | Dispositif de dosage avec conecteur électrique |
DE102004058715B4 (de) * | 2004-12-06 | 2010-08-12 | Continental Automotive Gmbh | Kraftstoffinjektor für eine Brennkraftmaschine sowie Verfahren zur Herstellung eines Kraftstoffinjektors |
DE102005004320A1 (de) * | 2005-01-31 | 2006-08-03 | Robert Bosch Gmbh | Ausrichtung elektrischer Überbrückungen in Injektoren |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2094940A (en) * | 1981-02-18 | 1982-09-22 | Nissan Motor | Piezo-electric valve |
JPH06291382A (ja) * | 1993-04-02 | 1994-10-18 | Hitachi Metals Ltd | 圧電素子組立体の製造方法 |
DE19909452C1 (de) * | 1999-03-04 | 2000-03-23 | Bosch Gmbh Robert | Piezoelektrischer Aktor |
DE19843535A1 (de) * | 1998-09-23 | 2000-03-30 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0794812B2 (ja) * | 1987-12-29 | 1995-10-11 | トヨタ自動車株式会社 | インジェクタ用アクチュエータ |
DE19715487C2 (de) * | 1997-04-14 | 2002-06-13 | Siemens Ag | Piezoelektrischer Aktor mit einem Hohlprofil |
DE19858085C1 (de) * | 1998-12-16 | 2000-03-30 | Siemens Ag | Stellantrieb für einen Kraftstoffinjektor |
-
2000
- 2000-08-11 DE DE10039218A patent/DE10039218A1/de not_active Ceased
-
2001
- 2001-08-09 WO PCT/DE2001/002950 patent/WO2002014679A1/fr active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2094940A (en) * | 1981-02-18 | 1982-09-22 | Nissan Motor | Piezo-electric valve |
JPH06291382A (ja) * | 1993-04-02 | 1994-10-18 | Hitachi Metals Ltd | 圧電素子組立体の製造方法 |
DE19843535A1 (de) * | 1998-09-23 | 2000-03-30 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
DE19909452C1 (de) * | 1999-03-04 | 2000-03-23 | Bosch Gmbh Robert | Piezoelektrischer Aktor |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 01 28 February 1995 (1995-02-28) * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100376784C (zh) * | 2003-01-24 | 2008-03-26 | 西门子Vdo汽车公司 | 用于定量供应加压流体的计量装置 |
WO2007023047A1 (fr) * | 2005-08-25 | 2007-03-01 | Robert Bosch Gmbh | Ensemble comprenant un actionneur piezoelectrique |
JP2008202407A (ja) * | 2007-02-16 | 2008-09-04 | Denso Corp | インジェクタの製造方法 |
WO2010092170A1 (fr) * | 2009-02-16 | 2010-08-19 | Continental Automotive Gmbh | Actionneur piézoélectrique, procédé de production de l'actionneur et injecteur |
EP2713040A1 (fr) * | 2012-09-26 | 2014-04-02 | Delphi International Operations Luxembourg S.a.r.l. | Connecteur électrique |
WO2014048690A1 (fr) * | 2012-09-26 | 2014-04-03 | Delphi International Operations Luxembourg S.À.R.L. | Connecteur électrique |
Also Published As
Publication number | Publication date |
---|---|
DE10039218A1 (de) | 2002-02-28 |
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