WO2000049286A1 - Injektor mit einem piezo-mehrlagenaktor - Google Patents
Injektor mit einem piezo-mehrlagenaktor Download PDFInfo
- Publication number
- WO2000049286A1 WO2000049286A1 PCT/DE2000/000122 DE0000122W WO0049286A1 WO 2000049286 A1 WO2000049286 A1 WO 2000049286A1 DE 0000122 W DE0000122 W DE 0000122W WO 0049286 A1 WO0049286 A1 WO 0049286A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- injector
- actuator body
- circular cylindrical
- plate spring
- valve
- Prior art date
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 238000002347 injection Methods 0.000 claims abstract description 5
- 239000007924 injection Substances 0.000 claims abstract description 5
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 239000000463 material Substances 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
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/21—Fuel-injection apparatus with piezoelectric or magnetostrictive elements
Definitions
- the invention relates to an injector with a piezo multilayer actuator, in particular for "common rail”.
- Diesel injection systems of motor vehicles which has a multi-layer actuator body which is seated within a longitudinal bore of an injector housing and is preloaded on the face side by preloading means.
- FIG. 1 shows the section of the known injector lying around the actuator body.
- the means prestressing the actuator body 1 consist of a valve-side disc spring 4 which, on the one hand, abuts or engages an annular flange 3 located on the valve-side end face of the actuator body 1 and, on the other hand, a radially inwardly projecting shoulder 5 of the injector housing 2. In this case it forms
- Injector housing 2 itself the means for transmitting the biasing force exerted by the plate spring 4 to the other end face of the actuator body 1.
- the arrow V indicates the direction to the valve. Due to the diameter of the plate spring 4 serving as a biasing element, the
- an actuator body 1 seated centrally within an injector housing 2 is preloaded on the end face by a pretensioning bracket 6 with a right and left spring leg 6a, 6b by means of a first force-centering pressure element 7 and a second force-centering pressure element 8. Since the two legs 6a, 6b of the pretensioning bracket 6 require space to the left and right of the injector body 1, the outer diameter of the injector housing 2 cannot be reduced in the critical area in this case either.
- the diameter of the components in the area of the actuator body must be chosen to be as small as possible.
- An essential aspect of an injector according to the invention with a piezo multilayer actuator consists in that the prestressing means have at least one disc spring, which acts in a prestressing manner on the end face of the actuator body opposite an injector valve, and a force transmission element which is seated in the injector housing and is axially movable therein and which has the spring force of the disc spring ( n) transfers to the valve-side end of the actuator body.
- the actuator body preferably has a circular cylindrical cross-sectional shape.
- the sleeve-shaped injector housing has a circular cylindrical inner and outer contour at least in the area of the actuator body and surrounds the actuator body and the force transmission member, which forms a circular cylindrical clamping sleeve, the actuator body abutting a valve-side inner wall of this clamping sleeve and the plate springs between the opposite end face Attack the inner wall of the adapter sleeve and the adjacent face of the actuator body.
- the biasing spring (s) causing the bias is behind, ie. H. provided on the side of the actuator body facing away from the valve, so that a narrow construction of the injector in the area of the actuator body is made possible.
- the thicker actuator head with the plate spring or the plate springs is in the uncritical area of the cylinder head of the internal combustion engine.
- Diesel injection injectors can be manufactured with piezo multi-layer actuators that are no longer than conventional solenoid valve injectors.
- FIG. 1 shows in the form of a schematic longitudinal section the known injector already described with a valve-side pretensioning element designed as a plate spring.
- FIG. 2 shows in the form of a schematic longitudinal section the other known injector already described, which contains a two-legged pretensioning bracket as the pretensioning element.
- FIG. 3 shows a preferred exemplary embodiment of an injector according to the invention with a piezo multilayer actuator in the form of a schematic longitudinal section.
- a cylindrical actuator body 10 of a piezo multilayer actuator which can have the form of a multilayer laminate composed of layers of piezoelectric material stacked on top of one another and metallic or electrically conductive layers serving as electrodes between them, is prestressed on the end face by means of prestressing means.
- the biasing means consist of a plate spring assembly 14 and a cylindrical
- Collet 11 which sit within a cylindrical injector housing 12.
- the actuator body 10 of the piezo multilayer actuator ends on the end facing the valve V in a pressure bolt 16, which passes through a central bore 19 in the cylindrical clamping sleeve 11.
- the opposite end to the valve The end face of the actuator body 10 ends in a support element 17, which in turn has a bolt-shaped end that projects through a central bore 20 of the clamping sleeve 11 and abuts there against a radial inner wall of the injector housing 12.
- Preloading means d. H. the plate spring assembly 14 and the clamping sleeve 11 clamped end faces.
- the clamping sleeve 11 which is seated in the central longitudinal bore 18 of the injector housing 12, moves together with the valve-side end, ie. H. with the pressure pin 16 of the actuator in the axial
- the injector housing 12 in the section which is opposite the valve-side end of the actuator body 10, i. H. where the plate spring assembly 14 is located and the clamping sleeve 11 also form circular cylindrical radial extensions 15 and 13 within this section.
- the plate springs of the plate spring assembly 14 can have a diameter sufficient for a desired spring force.
- the embodiment according to the invention described above with reference to FIG. 3 offers an injector with a piezo multilayer actuator, since the prestressing element, i. H. the plate spring assembly 14 behind the actuator body 10, d. H. is at a position facing away from the valve side of the actuator body 10, a narrow construction of the injector in the area of the relatively long piezoelectric actuator body 10, the thicker head of which with the plate spring assembly 14 is in the uncritical area of the cylinder head of the internal combustion engine.
- designs of an injector equipped with a piezo multilayer actuator are possible which are no longer than conventional solenoid valve injectors.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00907429A EP1071878B1 (de) | 1999-02-16 | 2000-01-14 | Injektor mit einem piezo-mehrlagenaktor |
DE50005857T DE50005857D1 (de) | 1999-02-16 | 2000-01-14 | Injektor mit einem piezo-mehrlagenaktor |
JP2000599997A JP2002537515A (ja) | 1999-02-16 | 2000-01-14 | 圧電式多層アクチュエータを備えたインジェクタ |
US09/673,352 US6371085B1 (en) | 1999-02-16 | 2000-01-14 | Injector with a multilayer piezoelectric actuator |
KR1020007011367A KR20010042665A (ko) | 1999-02-16 | 2000-01-14 | 다층 압전 액추에이터를 구비한 인젝터 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19906467.9 | 1999-02-16 | ||
DE19906467A DE19906467A1 (de) | 1999-02-16 | 1999-02-16 | Injektor mit einem Piezo-Mehrlagenaktor |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000049286A1 true WO2000049286A1 (de) | 2000-08-24 |
Family
ID=7897691
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2000/000122 WO2000049286A1 (de) | 1999-02-16 | 2000-01-14 | Injektor mit einem piezo-mehrlagenaktor |
Country Status (6)
Country | Link |
---|---|
US (1) | US6371085B1 (de) |
EP (1) | EP1071878B1 (de) |
JP (1) | JP2002537515A (de) |
KR (1) | KR20010042665A (de) |
DE (2) | DE19906467A1 (de) |
WO (1) | WO2000049286A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10142798C2 (de) * | 2001-08-31 | 2003-07-31 | Bosch Gmbh Robert | Lagerung für ein Piezoaktormodul in einem Common-Rail-Injektor |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10002437A1 (de) * | 2000-01-21 | 2001-08-16 | Bosch Gmbh Robert | Piezoaktor |
DE10025997A1 (de) * | 2000-05-25 | 2001-12-06 | Bosch Gmbh Robert | Piezoaktor |
DE10122256A1 (de) * | 2001-05-08 | 2002-11-21 | Bosch Gmbh Robert | Kraftstoff-Einspritzvorrichtung für Brennkraftmaschinen, insbesondere Common-Rail-Injektor, sowie Kraftstoffsystem und Brennkraftmaschine |
US6983894B2 (en) | 2002-02-13 | 2006-01-10 | Siemens Vdo Automotive Inc. | Piezo-electrically actuated canister purge valve with a hydraulic amplifier |
US6811093B2 (en) * | 2002-10-17 | 2004-11-02 | Tecumseh Products Company | Piezoelectric actuated fuel injectors |
US20050258715A1 (en) * | 2004-05-19 | 2005-11-24 | Schlabach Roderic A | Piezoelectric actuator having minimal displacement drift with temperature and high durability |
DE102005024710A1 (de) * | 2005-05-30 | 2006-12-07 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
DE102005046174B4 (de) * | 2005-09-27 | 2008-12-04 | Siemens Ag | Spannfeder |
US20070075286A1 (en) * | 2005-10-04 | 2007-04-05 | Par Technologies, Llc | Piezoelectric valves drive |
EP1849993B1 (de) * | 2006-04-25 | 2010-08-18 | Delphi Technologies Holding S.à.r.l. | Schutzverkapselung |
DE102011084107A1 (de) * | 2011-10-06 | 2013-04-11 | Continental Automotive Gmbh | Piezoelektrischer Aktuator |
DE102013012444A1 (de) * | 2013-07-29 | 2015-01-29 | Astrium Gmbh | Ventilanordnung zum Schalten und/oder Regeln eines Medienstroms eines Raumfahrttriebwerks und Raumfahrttriebwerk |
DE102014009025B4 (de) * | 2014-06-24 | 2016-02-18 | Airbus Ds Gmbh | Biegerahmen zur Velängerung des Stellwegs eines Aktors für ein mechanisch betätigtes Bauteil |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4782807A (en) * | 1986-09-05 | 1988-11-08 | Toyota Jidosha Kabushiki Kaisha | Unit injector for an internal combustion engine |
WO1994019598A1 (de) | 1993-02-26 | 1994-09-01 | Siemens Aktiengesellschaft | Vorrichtung zum öffnen und verschliessen einer in einem gehäuse vorhandenen durchtrittsöffnung |
DE19653555A1 (de) * | 1996-12-20 | 1998-06-25 | Siemens Ag | Piezoelektrischer Aktor |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3533975A1 (de) * | 1985-09-24 | 1987-03-26 | Bosch Gmbh Robert | Zumessventil zur dosierung von fluessigkeiten oder gasen |
US5004945A (en) * | 1988-09-26 | 1991-04-02 | Nippondenso Co., Ltd. | Piezoelectric type actuator |
DE19650900A1 (de) * | 1996-12-07 | 1998-06-10 | Bosch Gmbh Robert | Piezoelektrischer Aktuator |
DE19702066C2 (de) * | 1997-01-22 | 1998-10-29 | Daimler Benz Ag | Piezoelektrischer Injektor für Kraftstoffeinspritzanlagen von Brennkraftmaschinen |
DE19744235A1 (de) * | 1997-10-07 | 1999-04-08 | Fev Motorentech Gmbh & Co Kg | Einspritzdüse mit piezoelektrischem Aktuator |
US5875764A (en) * | 1998-05-13 | 1999-03-02 | Siemens Aktiengesellschaft | Apparatus and method for valve control |
DE19905413A1 (de) * | 1999-02-10 | 2000-08-24 | Bosch Gmbh Robert | Injektor mit Piezo-Mehrlagenaktor für Einspritzsysteme |
DE19919313B4 (de) * | 1999-04-28 | 2013-12-12 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
US6253736B1 (en) * | 1999-08-10 | 2001-07-03 | Cummins Engine Company, Inc. | Fuel injector nozzle assembly with feedback control |
-
1999
- 1999-02-16 DE DE19906467A patent/DE19906467A1/de not_active Ceased
-
2000
- 2000-01-14 DE DE50005857T patent/DE50005857D1/de not_active Expired - Fee Related
- 2000-01-14 US US09/673,352 patent/US6371085B1/en not_active Expired - Fee Related
- 2000-01-14 KR KR1020007011367A patent/KR20010042665A/ko not_active Application Discontinuation
- 2000-01-14 WO PCT/DE2000/000122 patent/WO2000049286A1/de not_active Application Discontinuation
- 2000-01-14 EP EP00907429A patent/EP1071878B1/de not_active Expired - Lifetime
- 2000-01-14 JP JP2000599997A patent/JP2002537515A/ja active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4782807A (en) * | 1986-09-05 | 1988-11-08 | Toyota Jidosha Kabushiki Kaisha | Unit injector for an internal combustion engine |
WO1994019598A1 (de) | 1993-02-26 | 1994-09-01 | Siemens Aktiengesellschaft | Vorrichtung zum öffnen und verschliessen einer in einem gehäuse vorhandenen durchtrittsöffnung |
DE19653555A1 (de) * | 1996-12-20 | 1998-06-25 | Siemens Ag | Piezoelektrischer Aktor |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10142798C2 (de) * | 2001-08-31 | 2003-07-31 | Bosch Gmbh Robert | Lagerung für ein Piezoaktormodul in einem Common-Rail-Injektor |
Also Published As
Publication number | Publication date |
---|---|
EP1071878A1 (de) | 2001-01-31 |
KR20010042665A (ko) | 2001-05-25 |
DE19906467A1 (de) | 2000-08-24 |
US6371085B1 (en) | 2002-04-16 |
EP1071878B1 (de) | 2004-03-31 |
JP2002537515A (ja) | 2002-11-05 |
DE50005857D1 (de) | 2004-05-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1082567B1 (de) | Piezoelektrischer aktor | |
EP1071878B1 (de) | Injektor mit einem piezo-mehrlagenaktor | |
EP0879373A1 (de) | Piezoelektrischer aktuator | |
EP0301267A1 (de) | Kugelgelenk, welches zwischen einen Kipphebel und einen Ventilschaft eines Verbrennungsmotors eingeschaltet ist | |
EP1223337A1 (de) | Geraeuschreduzierende Anordnung von Unterlegscheiben unter einer Einspritzduese | |
DE19906468B4 (de) | Piezoelektrischer Aktor | |
WO2003081023A1 (de) | Kraftstoffeinspritzventil | |
EP1370765B1 (de) | Brennstoffeinspritzventil | |
EP0477520A1 (de) | Kontaktierungsleiste zur gemeinsamen elektrischen Kontaktierung mehrerer elektrisch erregbarer Aggregate von Brennkraftmaschinen | |
EP2440770B1 (de) | Einspritzventil mit übertragungseinheit | |
EP1519072B1 (de) | Rohrfeder für Aktor | |
EP1070201A1 (de) | Injektor mit piezo-mehrlagenaktor für einspritzsysteme | |
WO2002086982A1 (de) | Vorrichtung zum übertragen einer auslenkung eines aktors und verfahren zu seiner herstellung | |
EP1190168B1 (de) | Aktor | |
EP1630408B1 (de) | Kraftstoffinjektor für eine Brennkraftmaschine sowie Verfahren zur Montage eines derartigen Kraftstoffinjektors | |
EP1144848B1 (de) | Brennstoffeinspritzventil | |
WO2008058799A1 (de) | Kraftstoffinjektor | |
EP1105638B1 (de) | Brennstoffeinspritzventil | |
EP1354131A1 (de) | Ventil zum steuern von flüssigkeiten | |
WO2004053324A1 (de) | Brennstoffeinspritzventil | |
EP1121526A1 (de) | Brennstoffeinspritzventil | |
EP1528607B1 (de) | Aktormodul | |
EP1508720B1 (de) | Rohrfeder für Aktor | |
DE10340319A1 (de) | Ventileinrichtung, insbesondere Kraftstoffeinspritzventil für eine Brennkraftmaschine | |
WO2006058811A1 (de) | Piezoaktor zur bestätigung eines mechanischen bauteils |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): JP KR US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2000907429 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020007011367 Country of ref document: KR |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 09673352 Country of ref document: US |
|
WWP | Wipo information: published in national office |
Ref document number: 2000907429 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 1020007011367 Country of ref document: KR |
|
WWG | Wipo information: grant in national office |
Ref document number: 2000907429 Country of ref document: EP |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 1020007011367 Country of ref document: KR |