EP1430217A1 - Brennstoffeinspritzventil - Google Patents
BrennstoffeinspritzventilInfo
- Publication number
- EP1430217A1 EP1430217A1 EP02754260A EP02754260A EP1430217A1 EP 1430217 A1 EP1430217 A1 EP 1430217A1 EP 02754260 A EP02754260 A EP 02754260A EP 02754260 A EP02754260 A EP 02754260A EP 1430217 A1 EP1430217 A1 EP 1430217A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- armature
- fuel injection
- guide collar
- injection valve
- valve
- 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
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
-
- 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
- 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
- F02M51/0685—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 and the valve being allowed to move relatively to each other or not being attached to each other
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
- F02M2200/306—Fuel-injection apparatus having mechanical parts, the movement of which is damped using mechanical 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
- F02M2200/50—Arrangements of springs for valves used in fuel injectors or fuel injection pumps
- F02M2200/505—Adjusting spring tension by sliding spring seats
-
- 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
- F02M61/165—Filtering elements specially adapted in fuel inlets to injector
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S239/00—Fluid sprinkling, spraying, and diffusing
- Y10S239/90—Electromagnetically actuated fuel injector having ball and seat type valve
Definitions
- the invention relates to a fuel injector according to the preamble of the main claim.
- a disadvantage of guiding the valve needle in a guide component arranged on the downstream side of the armature is, in particular, the radial forces acting on the component consisting of armature and valve needle due to an eccentric positioning of the armature. This leads to considerable frictional forces in the guides due to the unfavorable leverage between the valve needle guides and the point of application of the magnetic radial forces. Even slight offsets or manufacturing tolerances of the valve needle, the guides or the armature cause eccentric offsets of the armature, which results in high frictional forces and therefore wear on the components and malfunctions of the fuel injector.
- the fuel injector according to the invention with the characterizing features of the main claim has the advantage that a wavy guide collar surrounding the armature, not everywhere, guides the armature in the outer pole of the fuel injector and thereby counteracts canting or lateral offsets.
- the undulating contour of the circumferential guide collar allows the fuel an unobstructed through the recesses formed between the guide collar and the counter surface Flow to the valve seat and thus rapid emptying of the working gap. This reduces hydraulic losses.
- the guide collar does not require any special anchor shaft length, but can be attached in a simple manner to an anchor of conventional construction, whereby the anchor mass can be optimized.
- the angular error-tolerant guidance of the armature is advantageous, which minimizes the eccentricity of the radial surfaces of the armature surrounding the guide collar and thus keeps frictional forces low.
- the anchor with the guide collar can advantageously be produced in a simple manner by turning, the shaft contour being able to comprise between two and, for example, ten shafts.
- Figure 1 is a schematic section through an embodiment of a fuel injector designed according to the invention in an overall view.
- FIG. 2 shows a schematic section through the exemplary embodiment of the fuel injector according to the invention shown in FIG. 1 in area II in FIG. 1; and Fig. 3 is a schematic cross section along the line III -III through the armature of the fuel injector designed with the measures according to the invention.
- a fuel injector 1 shown in FIG. 1 is in the form of a fuel injector for fuel injection systems of mixture-compressing, spark-ignited internal combustion engines.
- the fuel injection valve 1 is particularly suitable for injecting fuel directly into a combustion chamber (not shown) of an internal combustion engine.
- the fuel injector 1 consists of a nozzle body 2, in which a valve needle 3 is arranged.
- the valve needle 3 is operatively connected to a valve closing body 4, which cooperates with a valve seat surface 6 arranged on a valve seat body 5 to form a sealing seat.
- fuel injector 1 is a fuel injector 1 that opens inward and has a spray opening 7.
- the nozzle body 2 is sealed by a seal 8 against the outer pole 9 of a magnetic circuit with a magnet coil 10.
- the magnet coil 10 is encapsulated in a coil housing 11 and wound on a coil carrier 12, which bears against an inner pole 13 of the magnetic circuit.
- the inner pole 13 and the outer pole 9 are separated from one another by a constriction 26 and connected to one another by a non-ferromagnetic connecting component 29.
- the magnet coil 10 is excited via a line 19 by an electrical current that can be supplied via an electrical plug contact 17.
- the plug contact 17 is surrounded by a plastic sheath 18, which can be molded onto the inner pole 13.
- valve needle 3 is guided in a valve needle guide 14, which is disc-shaped and one forms the upper bearing point of the valve needle 3.
- a paired Emstellsche be 15 is used for stroke adjustment.
- An armature 20 is located on the other side of the Emstellsche 15. This arm is non-positively connected via a first flange 21 to the valve needle 3 m, which is connected by a weld 22 to the first flange 21.
- a restoring spring 23 is supported on the first flange 21 and is preloaded in the present design of the fuel injection valve 1 by a sleeve 24.
- Fuel channels 30a to 30c run in the valve needle guide 14, in the armature 20 and on the valve seat body 5.
- the fuel is supplied via a central fuel supply 16 and filtered by a filter element 25.
- the fuel injector 1 is sealed by a seal 28 against a fuel distribution line, not shown.
- An annular damping element 32 which consists of an elastomer material, is arranged on the spray-side side of the armature 20. It rests on a second flange 31, which is non-positively connected to the valve needle 3 via a weld seam 33.
- the valve needle 3 In the idle state of the fuel injector 1, the valve needle 3 is acted upon by the return spring 23 against its stroke direction so that the valve closing body 4 is held on the valve seat 6 m sealing system.
- the magnetic coil 10 When the magnetic coil 10 is excited, it builds up a magnetic field which moves the armature 20 against the spring force of the return spring 23 m in the stroke direction, the stroke being predetermined by a working gap 27 which is in the rest position between the inner pole 12 and the armature 20.
- the armature 20 also takes the first flange 21, which is welded to the valve needle 3, in the lifting direction.
- the valve closing body 4, which is connected to the valve needle 3 m lifts off the valve seat surface 6 and the fuel is sprayed through the spray opening 7.
- the armature 20 drops from the inner pole 13 after the magnetic field has been sufficiently reduced by the pressure of the return spring 23, as a result of which the first flange 21, which is connected to the valve needle 3, moves counter to the stroke direction.
- the valve needle 3 is thereby moved in the same direction, as a result of which the valve closing body 4 touches the valve seat surface 6 and the fuel injection valve 1 is closed.
- valve needle 3 as already described above, is thus only supported on the outflow side of the armature 20, which results in unfavorable lever ratios and thus displacements of the armature 20.
- This is reinforced in particular by manufacturing tolerances of the valve needle guide 14.
- the armature 20 therefore has a wavy guide collar 34, which is thus on the armature
- FIG. 2 shows an excerpted sectional illustration of the area of the fuel injector 1 designed according to the invention, designated II in FIG. 1.
- the fuel injection valve 1 has an armature 20 which is provided with a guide collar 34.
- the armature 20 is formed in one piece with the guide collar 34 and is produced, for example, by turning.
- the guide collar 34 is mounted on an inner wall 38 of the recess 40 of the outer pole 9 forming a counter surface 41.
- the guide collar 34 has flats 42 and is therefore not in contact with the counter surface 41 everywhere, so that a plurality of recesses 40 are present between the guide collar 34 and the counter surface.
- FIG. 3 shows a schematic section along the line III-III in FIG. 2 through the armature 20 of the fuel injector 1 designed with the measures according to the invention.
- the guide collar 34 has flattened portions 42 in the present exemplary embodiment wavy, whereby contact surfaces 35 alternate with recessed areas 36.
- the centrally supplied fuel can flow around the armature 20 through the recessed regions 36 and flow further into a recess 40 in the fuel injection valve 1 in order to reach the sealing seat.
- the circumference is between two and z. B. ten recessed areas 36 of the wavy guide collar 34 in front.
- three contact surfaces 35 and accordingly three recessed areas 36 are shown.
- the recessed regions 36 of the wave-shaped guide collar 34 can have the same, larger or smaller extension than the contact surfaces 35 lying between them.
- the wavy guide collar 34 rests with the contact surfaces 35 on the inner wall 38 of the outer pole 9 of the magnetic circuit and is thereby guided through the outer pole 9.
- the recessed areas 36 of the wave-shaped guide collar 34 ensure that the fuel flows out of the working gap 27 quickly.
- the hydraulic losses in the working gap 27 when the armature 20 is pulled in or out can thus be kept low.
- the invention is not limited to the illustrated embodiment and z. B. also suitable for outward opening fuel injection valves 1.
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)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10143500A DE10143500A1 (de) | 2001-09-05 | 2001-09-05 | Brennstoffeinspritzventil |
DE10143500 | 2001-09-05 | ||
PCT/DE2002/002298 WO2003027482A1 (de) | 2001-09-05 | 2002-06-21 | Brennstoffeinspritzventil |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1430217A1 true EP1430217A1 (de) | 2004-06-23 |
EP1430217B1 EP1430217B1 (de) | 2005-08-17 |
Family
ID=7697797
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02754260A Expired - Lifetime EP1430217B1 (de) | 2001-09-05 | 2002-06-21 | Brennstoffeinspritzventil |
Country Status (7)
Country | Link |
---|---|
US (1) | US7093779B2 (de) |
EP (1) | EP1430217B1 (de) |
JP (1) | JP4739668B2 (de) |
KR (1) | KR100878132B1 (de) |
CN (1) | CN100416083C (de) |
DE (2) | DE10143500A1 (de) |
WO (1) | WO2003027482A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100018503A1 (en) * | 2008-07-22 | 2010-01-28 | Perry Robert B | Upper guide system for solenoid actuated fuel injectors |
KR200486185Y1 (ko) | 2016-03-15 | 2018-04-11 | 주식회사 대성엔지니어링 | 솔리드 스테이트 드라이브 테스트용 매거진 |
EP3339626A1 (de) * | 2016-12-23 | 2018-06-27 | Continental Automotive GmbH | Ventilanordnung mit einem anker mit führenden oberflächen und niedrigen durchgängen und einspritzventil |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3731881A (en) * | 1972-02-24 | 1973-05-08 | Bowmar Instrument Corp | Solenoid valve with nozzle |
JPS55161957A (en) * | 1979-06-05 | 1980-12-16 | Nippon Denso Co Ltd | Solenoid type fuel injection valve |
JPS56162371U (de) * | 1980-05-06 | 1981-12-02 | ||
JPS5965560A (ja) * | 1982-10-08 | 1984-04-13 | Hitachi Ltd | 電磁式燃料噴射弁 |
JPS61108866A (ja) * | 1984-10-31 | 1986-05-27 | Nippon Denso Co Ltd | 電磁式燃料噴射弁 |
DE3516324A1 (de) * | 1985-05-07 | 1986-11-13 | Vdo Adolf Schindling Ag, 6000 Frankfurt | Linearmotor |
DE3516337A1 (de) * | 1985-05-07 | 1986-11-13 | Vdo Adolf Schindling Ag, 6000 Frankfurt | Einspritzventil |
DE3627793A1 (de) * | 1986-08-16 | 1988-02-18 | Vdo Schindling | Elektromagnetisch betaetigbares ventil |
DE3643523A1 (de) * | 1986-12-19 | 1988-06-30 | Bosch Gmbh Robert | Einspritzventil fuer kraftstoffeinspritzanlagen |
DE3904447A1 (de) * | 1989-02-15 | 1990-08-16 | Bosch Gmbh Robert | Magnetanker |
JP2765063B2 (ja) * | 1989-06-26 | 1998-06-11 | 株式会社デンソー | 電磁式燃料噴射弁 |
DE4426006A1 (de) * | 1994-07-22 | 1996-01-25 | Bosch Gmbh Robert | Ventilnadel für ein elektromagnetisch betätigbares Ventil und Verfahren zur Herstellung |
JPH0886258A (ja) * | 1994-09-19 | 1996-04-02 | Nippondenso Co Ltd | 燃料噴射弁 |
DE19626576A1 (de) * | 1996-07-02 | 1998-01-08 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
DE19627939C1 (de) * | 1996-07-11 | 1997-03-20 | Bosch Gmbh Robert | Ventilnadel und Verfahren zur Herstellung einer Ventilnadel |
JP3913841B2 (ja) * | 1997-07-02 | 2007-05-09 | 本田技研工業株式会社 | 噴射弁 |
DE19808067A1 (de) * | 1998-02-26 | 1999-09-02 | Bosch Gmbh Robert | Elektromagnetisch betätigbares Ventil |
DE19853091A1 (de) * | 1998-11-18 | 2000-05-25 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
DE19960341A1 (de) * | 1999-12-15 | 2001-06-21 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
JP4196151B2 (ja) * | 2001-04-12 | 2008-12-17 | 株式会社デンソー | 燃料噴射装置 |
-
2001
- 2001-09-05 DE DE10143500A patent/DE10143500A1/de not_active Withdrawn
-
2002
- 2002-06-21 DE DE50203981T patent/DE50203981D1/de not_active Expired - Lifetime
- 2002-06-21 WO PCT/DE2002/002298 patent/WO2003027482A1/de active IP Right Grant
- 2002-06-21 US US10/416,046 patent/US7093779B2/en not_active Expired - Fee Related
- 2002-06-21 CN CNB02802835XA patent/CN100416083C/zh not_active Expired - Fee Related
- 2002-06-21 JP JP2003531017A patent/JP4739668B2/ja not_active Expired - Fee Related
- 2002-06-21 EP EP02754260A patent/EP1430217B1/de not_active Expired - Lifetime
- 2002-06-21 KR KR1020047003339A patent/KR100878132B1/ko not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO03027482A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP1430217B1 (de) | 2005-08-17 |
DE50203981D1 (de) | 2005-09-22 |
JP4739668B2 (ja) | 2011-08-03 |
JP2005504216A (ja) | 2005-02-10 |
CN100416083C (zh) | 2008-09-03 |
WO2003027482A1 (de) | 2003-04-03 |
US7093779B2 (en) | 2006-08-22 |
US20060011751A1 (en) | 2006-01-19 |
CN1473240A (zh) | 2004-02-04 |
KR100878132B1 (ko) | 2009-01-14 |
DE10143500A1 (de) | 2003-03-20 |
KR20040044852A (ko) | 2004-05-31 |
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Inventor name: GRANER, JUERGEN Inventor name: SEBASTIAN, THOMAS Inventor name: KEIM, NORBERT Inventor name: STILLING, JOACHIM Inventor name: BOEE, MATTHIAS Inventor name: RUEHLE, WOLFGANG |
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