EP1516116A1 - Dosiervorrichtung für fluide, insbesondere kraftfahrzeug-einspritzventil - Google Patents
Dosiervorrichtung für fluide, insbesondere kraftfahrzeug-einspritzventilInfo
- Publication number
- EP1516116A1 EP1516116A1 EP03737923A EP03737923A EP1516116A1 EP 1516116 A1 EP1516116 A1 EP 1516116A1 EP 03737923 A EP03737923 A EP 03737923A EP 03737923 A EP03737923 A EP 03737923A EP 1516116 A1 EP1516116 A1 EP 1516116A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- fluid chamber
- chamber module
- fluid
- valve needle
- 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
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 77
- 238000002347 injection Methods 0.000 title description 14
- 239000007924 injection Substances 0.000 title description 14
- 238000007789 sealing Methods 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 239000000446 fuel Substances 0.000 description 10
- 230000003068 static effect Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000003466 welding Methods 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/08—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series the valves opening in direction of fuel flow
-
- 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
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
- F02M61/12—Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies
-
- 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
-
- 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
-
- 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
- F02M2200/16—Sealing of fuel injection apparatus not otherwise provided for
-
- 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
Definitions
- Dosing device for fluids in particular motor vehicle injection valve
- injection systems are increasingly being used in which fuel is applied to injection valves arranged in the cylinders under high pressure (up to several hundred bar).
- the injection process directly into the combustion chamber of the cylinders is triggered by opening and closing the injection valves, the injection valves being controlled by modern actuators, which - in order to achieve high switching speeds and the associated known advantages in terms of fuel consumption and exhaust gases - are increasingly no longer electromagnetic , but work according to the piezoelectric principle.
- the axial changes in length of the modern solid-state actuators that generate the travel of the valve needle are known to be caused by the short expansion of the actuator body when an excitation voltage is applied.
- DE 199 58 704 A1 discloses a fluid metering device with a device for transmitting an actuator movement, in which the valve needle forms, together with a wall of the housing, a valve chamber which can be pressurized with fluid and leads to the metering opening.
- a fluid chamber is arranged in the housing in front of the valve chamber. This area in the injection valve housing, in which the high fuel pressure is present, should be reliably separated from the other areas of the housing. ses, in particular from the drive area in which, for example, ambient pressure prevails, be sealed.
- a hermetically sealed and axially soft needle bushing is provided between the areas, which comprises a horizontal connecting ring as an essential element, the ring surface of which is thus arranged perpendicular to the axis of the injection valve.
- the connecting ring with the valve needle passed through it is arranged adjacent to the fluid chamber and welded firmly to the housing of the injection valve.
- High-pressure connection for a metering fluid connects hydraulically, provided, the fluid chamber module and the housing being joined together along a separating surface which is pressurized by the pressurized metering fluid and is formed approximately only by axial cylinder wall area portions.
- the invention is based initially on the knowledge that the separating surface which is pressurized by the metering fluid is essentially formed from horizontal annular surface portions and vertical cylinder wall surface portions, each of which leads to compressive forces which have very different effects. "Horizontal” (or vertical) and “Vertical” (or parallel to the axis) refer to the symmetry axis of the metering valve defined by the valve needle.
- a preferred embodiment can be achieved in that the fluid chamber module is inserted into the opening-side end of the housing in the manner of a plug, that the housing encloses the fluid chamber module with full wall thickness up to the front end region of the housing, and that the fluid chamber module and housing are made by means of an annular weld seam on the end face. soapy end portion of the housing are welded together.
- the single figure of the drawing shows a schematic representation of an axial section through the valve needle-side part of a metering device according to the invention.
- the valve needle 7 projects through the fluid chamber module 4 into the housing interior 9.
- the housing interior 9 can contain a separate actuator space for the valve drive (actuator) not shown in the figure, or it can directly form the actuator space itself.
- actuator hydraulic devices and chambers (not shown), for example for a stroke translator or a hydraulic length compensator, can also be present in the housing interior 9.
- a metal bellows 18 can preferably be provided.
- a lower end of the metal bellows 18 is welded to the valve needle 7 and its upper end is welded to the upper end of a further guide shaft 22 which is part of the fluid chamber module 4.
- the cylindrical metal bellows 18 is tightly connected at one end to the valve needle 7 and at the other end to the cylindrical inner wall of the further guide shaft 22 of the fluid chamber module 4. In this way, the valve chamber 10 is sealed against the interior 9 of the housing.
- the fluid chamber module 4 essentially having a diameter corresponding to the diameter of the inner housing wall 3 without projections into the wall of the housing 1 - has one.
- a radially inwardly directed transverse projection is preferably provided on the front end region 19 of the housing 1, which engages in a (circumferential) groove 14 provided on the outside of the fluid chamber module 4 and which is arranged directly next to the weld seam 12.
- the unthrottled fluidic connection between the housing 1 and the fluid chamber module 4 can be produced by vertical and corresponding oblique bores 11 in the housing 1. These bores 11 therefore conduct the metering fluid, here: the fuel, downward from the high-pressure connection (not shown) located in the upper part of the injector to the fluid chamber module 4.
- the fuel is to be passed into the valve chamber 10 and ultimately to the metering opening 8.
- 4 holes 15 are provided in the fluid chamber module.
- a fuel line can also be formed in that the housing 1 consists of two cylinder walls which are inserted into one another and which limit the fuel line.
- Fluid chamber module 4 advantageously does not occur at all in the construction of the invention which is easy to manufacture, so that the durability of the welded connection is thereby reliably ensured.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10226649 | 2002-06-14 | ||
| DE10226649A DE10226649A1 (de) | 2002-06-14 | 2002-06-14 | Dosiervorrichtung für Fluide, insbesondere Kraftfahrzeug-Einspritzventil |
| PCT/DE2003/001815 WO2003106837A1 (de) | 2002-06-14 | 2003-06-02 | Dosiervorrichtung für fluide, insbesondere kraftfahrzeug-einspritzventil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1516116A1 true EP1516116A1 (de) | 2005-03-23 |
| EP1516116B1 EP1516116B1 (de) | 2006-04-12 |
Family
ID=29719088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03737923A Expired - Lifetime EP1516116B1 (de) | 2002-06-14 | 2003-06-02 | Dosiervorrichtung für fluide, insbesondere kraftfahrzeug-einspritzventil |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US7195182B2 (de) |
| EP (1) | EP1516116B1 (de) |
| JP (1) | JP4700341B2 (de) |
| DE (2) | DE10226649A1 (de) |
| WO (1) | WO2003106837A1 (de) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2355615T3 (es) | 2002-04-26 | 2011-03-29 | Millipore Corporation | Dispositivo de transferencia de fluido estéril desechable. |
| DE102004024119B4 (de) * | 2004-05-14 | 2006-04-20 | Siemens Ag | Düsenbaugruppe und Einspritzventil |
| JP4438760B2 (ja) * | 2005-06-10 | 2010-03-24 | 株式会社デンソー | 燃料噴射弁 |
| CA2600323C (en) * | 2007-09-20 | 2009-12-29 | Westport Power Inc. | Directly actuated valve with a strain-type actuator and a method of operating same |
| SG153002A1 (en) | 2007-11-16 | 2009-06-29 | Millipore Corp | Fluid transfer device |
| FR2940440B1 (fr) | 2008-12-18 | 2010-12-24 | Millipore Corp | Dispositif pour le transfert d'un milieu |
| FR2940439B1 (fr) | 2008-12-18 | 2011-02-11 | Millipore Corp | Dispositif pour le transfert d'un milieu |
| US8544497B2 (en) | 2009-10-30 | 2013-10-01 | Emd Millipore Corporation | Fluid transfer device and system |
| DE102010042476A1 (de) * | 2010-10-14 | 2012-04-19 | Robert Bosch Gmbh | Vorrichtung zum Einspritzen von Kraftstoff |
| EP2568155B1 (de) * | 2011-09-09 | 2018-11-14 | Continental Automotive GmbH | Ventilanordnung und Einspritzventil |
| DE102011087005A1 (de) * | 2011-11-24 | 2013-05-29 | Robert Bosch Gmbh | Ventil zum Zumessen eines strömenden Mediums |
| EP2602476A1 (de) | 2011-12-07 | 2013-06-12 | Continental Automotive GmbH | Ventilanordnung für ein Einspritzventil und Einspritzventil |
| JP6186126B2 (ja) * | 2013-01-24 | 2017-08-23 | 日立オートモティブシステムズ株式会社 | 燃料噴射装置 |
| DE102020121777A1 (de) * | 2020-08-19 | 2022-02-24 | Vermes Microdispensing GmbH | Ventilstößelstange |
| DE102021203738A1 (de) * | 2021-04-15 | 2022-10-20 | Robert Bosch Gesellschaft mit beschränkter Haftung | Gasinjektor mit kurzer axialer Bauweise |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6322372U (de) * | 1986-07-29 | 1988-02-15 | ||
| US5544816A (en) * | 1994-08-18 | 1996-08-13 | Siemens Automotive L.P. | Housing for coil of solenoid-operated fuel injector |
| DE19654322C2 (de) * | 1996-12-24 | 1999-12-23 | Bosch Gmbh Robert | Elektromagnetisch betätigbares Ventil |
| JP3861368B2 (ja) * | 1997-04-18 | 2006-12-20 | 日産自動車株式会社 | エンジンの燃料噴射弁 |
| US5921475A (en) * | 1997-08-07 | 1999-07-13 | Ford Motor Company | Automotive fuel injector |
| JP2000262076A (ja) * | 1999-03-05 | 2000-09-22 | Honda Motor Co Ltd | 超磁歪アクチュエータ |
| DE19932763A1 (de) * | 1999-07-14 | 2001-01-18 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
| DE19958704C2 (de) * | 1999-12-06 | 2002-10-02 | Siemens Ag | Vorrichtung zum Übertragen einer Aktorbewegung und Fluiddosierer mit einer solchen Vorrichtung |
| US6328232B1 (en) * | 2000-01-19 | 2001-12-11 | Delphi Technologies, Inc. | Fuel injector spring force calibration tube with internally mounted fuel inlet filter |
| US6607143B2 (en) * | 2000-12-29 | 2003-08-19 | Siemens Automotive Corporation | Modular fuel injector having a surface treatment on an impact surface of an electromagnetic actuator and having a lift set sleeve |
| US6694389B2 (en) * | 2001-03-19 | 2004-02-17 | Sun Microsystems, Inc. | Method and apparatus for data flow analysis |
-
2002
- 2002-06-14 DE DE10226649A patent/DE10226649A1/de not_active Withdrawn
-
2003
- 2003-06-02 JP JP2004513627A patent/JP4700341B2/ja not_active Expired - Fee Related
- 2003-06-02 EP EP03737923A patent/EP1516116B1/de not_active Expired - Lifetime
- 2003-06-02 WO PCT/DE2003/001815 patent/WO2003106837A1/de not_active Ceased
- 2003-06-02 DE DE50302964T patent/DE50302964D1/de not_active Expired - Lifetime
-
2004
- 2004-12-03 US US11/003,265 patent/US7195182B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO03106837A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005535818A (ja) | 2005-11-24 |
| US7195182B2 (en) | 2007-03-27 |
| DE50302964D1 (de) | 2006-05-24 |
| WO2003106837A1 (de) | 2003-12-24 |
| EP1516116B1 (de) | 2006-04-12 |
| US20050082380A1 (en) | 2005-04-21 |
| DE10226649A1 (de) | 2004-01-08 |
| JP4700341B2 (ja) | 2011-06-15 |
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