WO2005019641A1 - Brennstoffeinspritzventil - Google Patents
Brennstoffeinspritzventil Download PDFInfo
- Publication number
- WO2005019641A1 WO2005019641A1 PCT/DE2004/001451 DE2004001451W WO2005019641A1 WO 2005019641 A1 WO2005019641 A1 WO 2005019641A1 DE 2004001451 W DE2004001451 W DE 2004001451W WO 2005019641 A1 WO2005019641 A1 WO 2005019641A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- valve
- fuel injection
- sleeve
- seat body
- fuel
- Prior art date
Links
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
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/188—Spherical or partly spherical shaped valve member ends
-
- 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
- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
- F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
- F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
- F02M51/0671—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto
-
- 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
- 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
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, 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
- 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
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1853—Orifice plates
Definitions
- the invention relates to a fuel injection valve according to the preamble of the main claim, the z. B. is known from DE 195 27 049 AI.
- the valve seat is manufactured in high quality by grinding and subsequent honing.
- the fuel injector according to the invention with the characterizing features of the main claim has the advantage that the valve seat body is held in the valve sleeve by a clamping sleeve without press fits with the resulting surface deterioration being required. This enables thermal decoupling and, at the same time, simple assembly with reliable tightness.
- the clamping sleeve ' is advantageously elastic both in the radial and in the axial direction, as a result of which it remains in position itself on the one hand and on the other hand correctly positions the valve seat body and the spray orifice plate.
- valve seat body is sealed against the valve sleeve in a simple and cost-effective manner by a sealing ring.
- clamping sleeve can be produced in a simple manner by punching and bending.
- FIG. 2A shows a schematic, excerpted section through the spray-side end of an exemplary embodiment of a fuel injector designed according to the invention
- FIG. 2B shows a schematic perspective illustration of the clamping sleeve from the exemplary embodiment of a fuel injector designed according to the invention shown in FIG. 2A.
- FIG. 1 first shows a longitudinal section through the part of a fuel injector 1 according to the prior art, which is particularly suitable for injecting fuel into an intake manifold (not shown) of an internal combustion engine, in a schematic sectional view.
- the fuel injection valve 1 comprises an actuator in the exemplary embodiment in the form of a solenoid coil 2, which is wound on a coil carrier 3.
- the coil carrier 3 is encapsulated in a valve housing 4.
- the coil carrier 3 is penetrated by a valve sleeve 5, which is tubular and comprises a support tube 6, spread or welded therein, which serves as the inner pole of the magnet coil 2.
- the valve housing 4 can serve, for example, as the outer pole of the magnetic coil 2.
- An armature 7 is arranged on the outflow side of the support tube 6 and is integral with a valve needle 8 is trained .
- through-flow openings 9 are provided which direct the fuel flowing through the fuel injection valve 1 to a sealing seat.
- An annular filter 10 for filtering the fuel can be arranged in the area of the throughflow openings 9.
- the valve needle 8 is preferably operatively connected by welding to a spherical valve closing body 11, which forms a sealing seat z with a valve seat body 12. Downstream of the sealing seat at least one Absprit zöf opening 14 is formed in a spray orifice plate 13, from which fuel is injected into the intake manifold not shown.
- the armature 7 is acted upon by a return spring 15 in the idle state of the fuel injector 1 so that the fuel injector 1 is kept closed by the pressure of the valve closing body 11 on the valve seat body 12.
- the return spring 15 is arranged in a recess 16 of the armature 7 or the support tube 6 and is preloaded by an adjusting sleeve (not shown).
- the fuel injector 1 is closed as soon as the current exciting the magnet coil 2 is switched off and that Magnetic field has been reduced so far that the return spring 15 presses the armature 7 off the support tube 6, as a result of which the valve needle 8 moves in the outflow direction and the valve closing body 11 touches the valve seat body 12.
- the fuel injection valve 1 shown in FIG. 1 is sealed off from the intake manifold of the internal combustion engine (not shown in more detail) by means of a preferably annular seal 18 which is pushed over a projecting edge 19 of the valve housing 4 and is secured against slipping off by means of a plastic extrusion coating 20.
- Fuel injector 1 may be poor.
- valve closing body 12 with the sealing seat formed thereon by grinding and honing achieves a high surface quality with a good seal associated therewith, this is achieved by the subsequent machining processes such as this
- FIG. 1 An exemplary embodiment of a fuel injection valve 1 designed according to the invention shown in FIG. 1
- the individual components are assembled in a simple manner.
- the spray hole disk 13 is inserted into the valve sleeve 5 with a clearance fit.
- the Valve seat body 12 mounted, which is sealed against the valve sleeve 5 via a sealing ring 24.
- the valve seat body 12 also has a clearance fit with the valve sleeve 5.
- the spray hole plate 13 is centered by a chamfer 25 on the side of the valve seat body 12 facing the spray hole plate 13.
- the valve seat body 12 is fixed and, as a result, the fuel injector 1 is sealed by pressing the clamping sleeve 23 into the valve sleeve 5, which is supported on the valve seat body 12.
- valve sleeve 5 deterioration in the surface quality of the valve sleeve 5 can be avoided on the one hand and the work steps of welding the valve seat body 12, the spray disk 13 and the valve sleeve 5 can also be saved. None of the components have to be manufactured with high precision, since only a clearance fit and no press fit is required.
- valve seat body 12 This also achieves thermal decoupling of the valve seat body 12 from the valve sleeve 5, which enables improved hot behavior with respect to the fuel.
- the clamping sleeve 23 is both radially and axially elastic and thus ensures its own correct position in the valve sleeve 5 as well as the positioning of the valve seat body 12 in the valve sleeve 5.
- FIG. 2B The elasticity in two directions can be seen from FIG. 2B, in which the clamping sleeve 23 is shown in a perspective view in the unassembled state.
- the clamping sleeve 23 has an axial slot 26, which determines the elasticity in the circumferential direction, as well as elastic tongues 27, which are formed on a side of the clamping sleeve 23 facing the valve seat body 12 and enable elastic support of the clamping sleeve 23 on the valve seat body 12.
- the invention is not limited to the illustrated embodiment and for any construction of fuel fine injection valves 1 suitable, for. B. for fuel injection valves 1 with piezoelectric actuators. In particular, any combination of the individual features is possible.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/569,389 US8191797B2 (en) | 2003-08-19 | 2004-07-07 | Fuel injector |
EP04738873A EP1658429B1 (de) | 2003-08-19 | 2004-07-07 | Brennstoffeinspritzventil |
DE502004003900T DE502004003900D1 (de) | 2003-08-19 | 2004-07-07 | Brennstoffeinspritzventil |
JP2005518300A JP2006513364A (ja) | 2003-08-19 | 2004-07-07 | 燃料噴射弁 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10338081A DE10338081A1 (de) | 2003-08-19 | 2003-08-19 | Brennstoffeinspritzventil |
DE10338081.7 | 2003-08-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005019641A1 true WO2005019641A1 (de) | 2005-03-03 |
Family
ID=34177687
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2004/001451 WO2005019641A1 (de) | 2003-08-19 | 2004-07-07 | Brennstoffeinspritzventil |
Country Status (5)
Country | Link |
---|---|
US (1) | US8191797B2 (de) |
EP (1) | EP1658429B1 (de) |
JP (1) | JP2006513364A (de) |
DE (2) | DE10338081A1 (de) |
WO (1) | WO2005019641A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007023069A1 (de) * | 2005-08-26 | 2007-03-01 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006052817A1 (de) * | 2006-11-09 | 2008-05-15 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
PL1975486T3 (pl) * | 2007-03-28 | 2015-05-29 | Fillon Tech Sas Societe Par Actions Simplifiee | Zawór dozujący |
US8006715B2 (en) | 2007-09-20 | 2011-08-30 | Caterpillar Inc. | Valve with thin-film coating |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4423843A (en) * | 1982-01-28 | 1984-01-03 | General Motors Corporation | Electromagnetic fuel injector with armature stop and adjustable armature spring |
WO1988003225A1 (en) * | 1986-10-30 | 1988-05-05 | Allied Corporation | High pressure vortex injector |
DE19527049A1 (de) * | 1995-07-25 | 1997-01-30 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
US6390067B1 (en) * | 2000-08-10 | 2002-05-21 | Delphi Technologies, Inc. | Valve seat retainer for a fuel injector |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3245096A (en) * | 1962-02-23 | 1966-04-12 | Long Lok Corp | Self-locking screw |
EP0042799A3 (de) | 1980-06-23 | 1982-01-13 | The Bendix Corporation | Elektromagnetisches Einspritzventil |
JP3546490B2 (ja) | 1994-10-03 | 2004-07-28 | 株式会社デンソー | 電磁式燃料噴射弁 |
GB9615278D0 (en) | 1996-07-20 | 1996-09-04 | Philips Electronics Nv | Capacitive sensing array device |
JPH11132127A (ja) * | 1996-11-13 | 1999-05-18 | Denso Corp | 燃料噴射弁及びその組立方法 |
DE19907544C2 (de) * | 1999-02-22 | 2002-12-05 | Siemens Ag | Injektor für eine Einspritzanlage einer Brennkraftmaschine |
US6186421B1 (en) * | 1999-12-06 | 2001-02-13 | Delphi Technologies, Inc. | Fuel Injector |
US6550690B2 (en) | 2000-12-29 | 2003-04-22 | Siemens Automotive Corporation | Modular fuel injector having interchangeable armature assemblies and having an integral filter and dynamic adjustment assembly |
DE20110130U1 (de) * | 2001-06-19 | 2002-10-24 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine |
-
2003
- 2003-08-19 DE DE10338081A patent/DE10338081A1/de not_active Withdrawn
-
2004
- 2004-07-07 JP JP2005518300A patent/JP2006513364A/ja active Pending
- 2004-07-07 DE DE502004003900T patent/DE502004003900D1/de active Active
- 2004-07-07 WO PCT/DE2004/001451 patent/WO2005019641A1/de active IP Right Grant
- 2004-07-07 EP EP04738873A patent/EP1658429B1/de not_active Expired - Fee Related
- 2004-07-07 US US10/569,389 patent/US8191797B2/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4423843A (en) * | 1982-01-28 | 1984-01-03 | General Motors Corporation | Electromagnetic fuel injector with armature stop and adjustable armature spring |
WO1988003225A1 (en) * | 1986-10-30 | 1988-05-05 | Allied Corporation | High pressure vortex injector |
DE19527049A1 (de) * | 1995-07-25 | 1997-01-30 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
US6390067B1 (en) * | 2000-08-10 | 2002-05-21 | Delphi Technologies, Inc. | Valve seat retainer for a fuel injector |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007023069A1 (de) * | 2005-08-26 | 2007-03-01 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
US8272370B2 (en) | 2005-08-26 | 2012-09-25 | Robert Bosch Gmbh | Fuel injector |
Also Published As
Publication number | Publication date |
---|---|
US8191797B2 (en) | 2012-06-05 |
DE502004003900D1 (de) | 2007-07-05 |
JP2006513364A (ja) | 2006-04-20 |
EP1658429A1 (de) | 2006-05-24 |
DE10338081A1 (de) | 2005-03-10 |
US20070057088A1 (en) | 2007-03-15 |
EP1658429B1 (de) | 2007-05-23 |
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