EP2205853A1 - Elektromagnetisch betätigbares ventil - Google Patents
Elektromagnetisch betätigbares ventilInfo
- Publication number
- EP2205853A1 EP2205853A1 EP08804800A EP08804800A EP2205853A1 EP 2205853 A1 EP2205853 A1 EP 2205853A1 EP 08804800 A EP08804800 A EP 08804800A EP 08804800 A EP08804800 A EP 08804800A EP 2205853 A1 EP2205853 A1 EP 2205853A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- armature
- return spring
- electromagnetically actuated
- valve according
- 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
- 239000000446 fuel Substances 0.000 claims abstract description 22
- 238000002347 injection Methods 0.000 claims abstract description 17
- 239000007924 injection Substances 0.000 claims abstract description 17
- 230000005291 magnetic effect Effects 0.000 claims abstract description 12
- 238000002485 combustion reaction Methods 0.000 claims abstract description 4
- 238000000227 grinding Methods 0.000 claims description 3
- 230000003213 activating effect Effects 0.000 abstract 2
- 239000007921 spray Substances 0.000 description 3
- 230000010354 integration Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000007765 extrusion coating Methods 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000006223 plastic coating Substances 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000004804 winding 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
- 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
- F02M51/0667—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 acting as a valve or having a short 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
- F02M61/04—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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/50—Arrangements of springs for valves used in fuel injectors or fuel injection pumps
Definitions
- the invention is based on an electromagnetically actuated valve according to the preamble of the main claim.
- a known electromagnetically operable valve in the form of a fuel injection valve of the prior art is shown, which has a conventional structural design of a circumferential guide collar on the outer periphery of a movable armature. During its axial movement of the armature slides with its guide collar in the inner opening of a valve sleeve along its inner wall, which is insofar guided within the valve sleeve, whereby tilting or tilting of the armature is avoided.
- the electromagnetically actuated valve according to the invention with the characterizing features of claim 1 has the advantage of a compact design.
- the valve is particularly inexpensive to produce, since the anchor guide is particularly simple and inexpensive realized.
- a return spring and an inner longitudinal bore of the armature are paired with each other such that the guide of the armature during its axial movement takes place exclusively along the return spring.
- the return spring takes in addition to their actual reset function of the valve needle and the leadership function of the armature, which is realized in a simple way, a functional integration.
- the contact surface serving the guide is advantageously reduced compared to the solutions of the prior art. An improvement in function is given insofar as disadvantageous radial forces are avoided because of the guide-free outer circumference of the armature.
- FIG. 1 shows an electromagnetically operable valve in the form of a fuel injection valve according to the prior art
- Figure 2 is a partial view II of Figure 1 of the known
- Figure 3 is a partial view of a valve according to the invention.
- Figure 4 shows a detail IV in Figure 3 as a partial view of an inventively designed return spring.
- FIG. 1 is exemplified an electromagnetically operable valve in the form of a fuel injection valve for fuel injection systems of mixture-compression, spark-ignited internal combustion engines according to the prior art for a better understanding of the invention.
- the valve has a surrounded by a magnetic coil 1, serving as an inner pole and partially as a fuel flow largely tubular core 2.
- the magnetic coil 1 is of an outer, sleeve-shaped and stepped running, z.
- the magnetic coil 1, the core 2 and the valve shell 5 together form an electrically excitable actuator.
- valve sleeve 6 While embedded in a bobbin 3 magnetic coil 1 with a winding 4 surrounds a valve sleeve 6 from the outside, the core 2 in an inner, concentric with a valve longitudinal axis 10 extending opening 11 of the valve sleeve 6 is introduced.
- the valve sleeve 6 is elongated and thin-walled executed.
- the opening 11 serves, inter alia, as a guide opening for a valve needle 14 which is axially movable along the valve longitudinal axis 10.
- the valve sleeve 6 extends in the axial direction, for example over approximately half the total axial extent of the fuel injection valve.
- valve seat body 15 which is attached to the valve sleeve 6, e.g. is fastened by means of a weld 8.
- the valve seat body 15 has a fixed valve seat surface 16 as a valve seat.
- the valve needle 14 is formed for example by a tubular armature 17, a likewise tubular needle portion 18 and a spherical valve-closing body 19, wherein the valve-closing body 19, for. is firmly connected to the needle portion 18 by means of a weld.
- a e.g. cup-shaped spray orifice plate 21 is arranged, the bent and circumferentially encircling retaining edge 20 is directed against the flow direction upwards.
- valve seat body 15 and spray disk 21 The solid connection of the valve seat body 15 and spray disk 21 is z. B. realized by a circumferential tight weld.
- z. B. realized by a circumferential tight weld.
- one or more transverse openings 22 are provided, so that the fuel flowing through the armature 17 in an inner longitudinal bore 23 to the outside and on the valve closing body 19, for. can flow along flats 24 to the valve seat surface 16 along.
- the actuation of the injection valve takes place in a known manner electromagnetically.
- the electromagnetic circuit with the solenoid coil 1, the inner core 2, the outer valve shell 5 and the armature 17 is used Armature 17 is aligned with the valve closing body 19 facing away from the end of the core 2.
- the core 2 for example, also serving as an inner pole cover part, which closes the magnetic circuit may be provided.
- the spherical valve closing body 19 cooperates with the valve seat surface 16 of the valve seat body 15, which tapers in the direction of the flow in the direction of flow and which is formed in the axial direction downstream of a guide opening in the valve seat body 15.
- the spray perforated disc 21 has at least one, for example, four ejection openings 27 formed by erosion, laser drilling or punching.
- the insertion depth of the core 2 in the injection valve is decisive for the stroke of the valve needle 14.
- the one end position of the valve needle 14 is fixed in the non-energized magnetic coil 1 by the contact of the valve closing body 19 on the valve seat surface 16 of the valve seat body 15, while the other End position of the valve needle 14 results in energized solenoid coil 1 by the system of the armature 17 at the downstream end of the core.
- the stroke is adjusted by an axial displacement of the core 2, which is subsequently connected according to the desired position fixed to the valve sleeve 6.
- an adjustment in the form of an adjusting sleeve 29 is inserted.
- the adjusting sleeve 29 is used to adjust the spring preload applied to the adjusting sleeve 29 return spring 25, which in turn is supported with its opposite side to the valve needle 14 in the region of the armature 17, wherein an adjustment of the dynamic Abspritzmenge with the adjusting sleeve 29.
- a fuel filter 32 is disposed above the adjusting sleeve 29 in the valve sleeve 6.
- the inlet-side end of the valve is formed by a metal fuel inlet stub 41, which is surrounded by a plastic coating 42 that stabilizes, protects and surrounds it.
- a concentric to the valve longitudinal axis 10 extending flow bore 43 of a pipe 44 of the fuel inlet nozzle 41 serves as a fuel inlet.
- the plastic extrusion coating 42 is sprayed, for example, in such a way that the plastic directly surrounds parts of the valve sleeve 6 and of the valve jacket 5.
- a secure seal is achieved, for example via a labyrinth seal 46 on the circumference of the valve shell 5.
- To Kunststoffumspritzung 42 includes a mitangespritzter electrical connector 56th
- FIG. 2 shows a partial view II of FIG. 1 of the known one
- Fuel injection valve according to the prior art which identifies the invention relevant area.
- the guide area of the armature 17 becomes clear.
- At the outer periphery of the movable armature 17 has in a known manner a circumferential guide collar 60 or more distributed over the circumference of knob-like or nose-like
- guide collars 60 to guide him in the valve sleeve 6 safely and without jamming.
- the guide collar 60 or the guide collars 60 may also be integrally formed on the valve sleeve 6, in which case the outer circumference of the constant-diameter armature 17 is cylindrical.
- the return spring 25 accordingly has a clear clearance to the wall of the flow bore 28 in the core 2 or to the wall of the longitudinal bore 23 in the armature 17.
- Figure 3 shows a partial view of a valve according to the invention, in which the guide of the armature 17 from its outer circumference inwards into the
- the return spring 25 is due to the production of a hard wear-resistant wire, which usually has a circular cross-section, as shown in Figure 3.
- Figure 4 shows a section IV in Figure 3 as a partial view of an inventively designed return spring 25 which has a flattened outer periphery.
- the outer flats 61 may be e.g. be formed only on the spring coils in the region of the longitudinal bore 23 of the armature 17, but also extend over the entire length of the return spring 25.
- the attaching of the flats 61 takes place, for example, by means of grinding, in particular centerless grinding, which can be carried out very inexpensively with high accuracy.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fuel-Injection Apparatus (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007050819A DE102007050819A1 (de) | 2007-10-24 | 2007-10-24 | Elektromagnetisch betätigbares Ventil |
PCT/EP2008/062923 WO2009053211A1 (de) | 2007-10-24 | 2008-09-26 | Elektromagnetisch betätigbares ventil |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2205853A1 true EP2205853A1 (de) | 2010-07-14 |
EP2205853B1 EP2205853B1 (de) | 2015-12-09 |
Family
ID=40262005
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08804800.4A Active EP2205853B1 (de) | 2007-10-24 | 2008-09-26 | Elektromagnetisch betätigbares ventil |
Country Status (7)
Country | Link |
---|---|
US (1) | US8646749B2 (de) |
EP (1) | EP2205853B1 (de) |
JP (1) | JP5114571B2 (de) |
CN (1) | CN101835970B (de) |
BR (1) | BRPI0818382A2 (de) |
DE (1) | DE102007050819A1 (de) |
WO (1) | WO2009053211A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007049945A1 (de) * | 2007-10-18 | 2009-04-23 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
FR3055370B1 (fr) * | 2016-09-01 | 2020-05-01 | Delphi Technologies Ip Limited | Ensemble de bobine |
JP7120895B2 (ja) * | 2018-12-03 | 2022-08-17 | リンナイ株式会社 | 電動式ガス弁装置 |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2587538A (en) * | 1946-02-13 | 1952-02-26 | Seaman Henry | Solenoid valve |
US4655396A (en) * | 1985-09-25 | 1987-04-07 | United Technologies Diesel Systems, Inc. | Electromagnetic fuel injector |
DE3843862A1 (de) * | 1988-12-24 | 1990-06-28 | Bosch Gmbh Robert | Elektromagnetisch betaetigbares ventil |
US5054691A (en) * | 1989-11-03 | 1991-10-08 | Industrial Technology Research Institute | Fuel oil injector with a floating ball as its valve unit |
DE4137994C2 (de) | 1991-11-19 | 1999-06-02 | Bosch Gmbh Robert | Elektromagnetisch betätigbares Einspritzventil mit einem Düsenträger und Verfahren zur Herstellung eines Düsenträgers eines Einspritzventils |
DE4302686C2 (de) * | 1992-02-05 | 1994-12-15 | Bierther Hans Dietmar | Hochleistungsventil |
DE19503820C2 (de) | 1995-02-06 | 2003-10-16 | Bosch Gmbh Robert | Elektromagnetisch betätigbares Ventil und Verfahren zur Herstellung einer Führung an einem Ventil |
DE19547102A1 (de) * | 1995-12-16 | 1997-06-19 | Bosch Gmbh Robert | Kraftstoffeinspritzventil für Brennkraftmaschinen |
DE19712922B4 (de) * | 1997-03-27 | 2005-08-11 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
US6328231B1 (en) * | 1998-05-27 | 2001-12-11 | Siemens Automotive Corporation | Compressed natural gas injector having improved low noise valve needle |
US6015103A (en) * | 1998-06-08 | 2000-01-18 | General Motors Corporation | Filter for fuel injector |
JP3369523B2 (ja) * | 1999-12-27 | 2003-01-20 | 日本ピラー工業株式会社 | 逆止弁 |
US6776401B2 (en) * | 2000-04-01 | 2004-08-17 | Robert Bosch Gmbh | Helical compression spring for use in a component of a fuel injection system |
DE10051016A1 (de) | 2000-10-14 | 2002-04-18 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
US7744020B2 (en) * | 2003-07-21 | 2010-06-29 | Continental Automotive Systems Us, Inc. | Fuel injector including an orifice disc, and a method of forming the orifice disc including punching and shaving |
DE102004033280A1 (de) * | 2004-07-09 | 2006-02-02 | Robert Bosch Gmbh | Einspritzventil zur Kraftstoffeinspritzung |
DE102004037721A1 (de) * | 2004-08-04 | 2006-02-23 | Robert Bosch Gmbh | Druckfeder zum Ansteuern eines dynamisch beanspruchten Elements |
JP4285701B2 (ja) * | 2005-03-07 | 2009-06-24 | 株式会社デンソー | 燃料噴射弁 |
-
2007
- 2007-10-24 DE DE102007050819A patent/DE102007050819A1/de not_active Withdrawn
-
2008
- 2008-09-26 JP JP2010530384A patent/JP5114571B2/ja active Active
- 2008-09-26 EP EP08804800.4A patent/EP2205853B1/de active Active
- 2008-09-26 CN CN2008801129084A patent/CN101835970B/zh active Active
- 2008-09-26 US US12/734,204 patent/US8646749B2/en not_active Expired - Fee Related
- 2008-09-26 WO PCT/EP2008/062923 patent/WO2009053211A1/de active Application Filing
- 2008-09-26 BR BRPI0818382 patent/BRPI0818382A2/pt not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO2009053211A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2011501036A (ja) | 2011-01-06 |
DE102007050819A1 (de) | 2009-04-30 |
EP2205853B1 (de) | 2015-12-09 |
US20100301247A1 (en) | 2010-12-02 |
CN101835970B (zh) | 2012-07-11 |
WO2009053211A1 (de) | 2009-04-30 |
BRPI0818382A2 (pt) | 2015-04-22 |
JP5114571B2 (ja) | 2013-01-09 |
CN101835970A (zh) | 2010-09-15 |
US8646749B2 (en) | 2014-02-11 |
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