EP1430217B1 - Soupape d'injection de carburant - Google Patents

Soupape d'injection de carburant Download PDF

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Publication number
EP1430217B1
EP1430217B1 EP02754260A EP02754260A EP1430217B1 EP 1430217 B1 EP1430217 B1 EP 1430217B1 EP 02754260 A EP02754260 A EP 02754260A EP 02754260 A EP02754260 A EP 02754260A EP 1430217 B1 EP1430217 B1 EP 1430217B1
Authority
EP
European Patent Office
Prior art keywords
fuel injection
injection valve
armature
guide collar
anchor
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.)
Expired - Lifetime
Application number
EP02754260A
Other languages
German (de)
English (en)
Other versions
EP1430217A1 (fr
Inventor
Thomas Sebastian
Jürgen GRANER
Wolfgang Rühle
Joachim Stilling
Matthias Boee
Norbert Keim
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1430217A1 publication Critical patent/EP1430217A1/fr
Application granted granted Critical
Publication of EP1430217B1 publication Critical patent/EP1430217B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 is based on a fuel injection valve according to the preamble of the main claim.
  • a disadvantage of the above-mentioned document described arrangement is in particular the large Length of the anchor, whereby the weight optimization of the Ankers is difficult.
  • the encircling obstructs Guide collar at anchor the outflow of fuel from the Working gap, resulting in greater hydraulic losses leads.
  • EP 0 200 865 A1 discloses an injection valve in particular for fuel injection systems of internal combustion engines.
  • the injection valve comprises a movable valve member with an anchor, which with a Magnet winding cooperates.
  • the anchor consists of a essentially cylindrical part, which is on the circumference has distributed flats, so that fuel at anchor can flow past. Non-flattened parts of the Peripheral surface of the armature serve as sliding surfaces of the Anchor. To get a good atomization of the injector in a combustion chamber of the internal combustion engine flowing fuel, has the injection valve in its interior means for generating a twist at the fuel.
  • WO 01/44 653 A2 is a fuel injection valve known which for injecting fuel into the Combustion chamber of an internal combustion engine is used. It includes one Anchor, which is in operative connection with a valve needle. The armature cooperates with a magnetic coil, which the Anchor together with the valve needle when excited by moves an electric current.
  • valve needle in her the Anchor facing part to lead in a housing component.
  • the anchor is not in the housing or in the pole component guided.
  • a disadvantage of the leadership of the valve needle in one are arranged downstream of the armature guide member especially on the off anchor and valve needle existing component due to an eccentric Positioning of the armature acting radial forces. This leads mainly by the unfavorable leverage between the valve needle guides and the point of application the magnetic radial forces to some considerable Frictional forces in the guides. Even minor Offsets or manufacturing tolerances of the valve needle, the Guides or the anchor call the eccentric offsets of the Ankers out, resulting in high frictional forces and thus Wear of the components and malfunctions of the Fuel injector result.
  • the fuel injection valve according to the invention with the Characteristic features of the main claim has the Advantage that a wavy, surrounding the anchor, not all around the leader federation the anchor in the Out pole of the fuel injection valve leads and thereby counteracts a tilting or lateral offsets.
  • the angle error tolerant leadership of Anchor advantageous, which the eccentricity of the Guide collar surrounding radial surfaces of the anchor minimized and thus keeps frictional forces low.
  • the anchor with the guide collar in easy to produce by turning, the Wave contour between two and, for example, ten waves may include.
  • a fuel injection valve 1 shown in FIG. 1 is in the form of a fuel injection valve for Fuel injection systems of mixture compression, spark-ignited internal combustion engines running.
  • the Fuel injector 1 is particularly suitable for direct injection of fuel into one illustrated combustion chamber of an internal combustion engine.
  • the fuel injection valve 1 consists of a Nozzle body 2, in which a valve needle 3 is arranged.
  • the valve needle 3 is in operative connection with a Valve closing body 4, with one on one Valve seat body 5 arranged valve seat surface 6 to a Tight fit together.
  • In the fuel injection valve 1 is it in the exemplary embodiment to an inward opening fuel injection valve 1, which via a Spray opening 7 has.
  • the nozzle body 2 is through a Seal 8 against the outer pole 9 of a magnetic circuit with a magnetic coil 10 sealed.
  • the magnet coil 10 is in encapsulated a coil housing 11 and a coil carrier 12 wound, which at an inner pole 13 of the magnetic circuit is applied.
  • the inner pole 13 and the outer pole 9 are connected by a Narrowing 26 separated from each other and through one another non-ferromagnetic connecting member 29 is connected.
  • the Solenoid 10 is connected via a line 19 from a via an electrical plug-in contact 17 can be supplied electrical Electricity excited.
  • the plug contact 17 is of a Plastic casing 18 surrounded, the inner pole 13th can be injected.
  • the valve needle 3 is in a valve needle guide fourteenth guided, which is designed disc-shaped and a upper storage point of the valve needle 3 forms.
  • Stroke adjustment is a paired shim 15.
  • An the other side of the dial 15 is a Anchor 20. This is about a first flange 21st non-positively connected to the valve needle 3 in conjunction, which by a weld 22 with the first flange 21 connected is.
  • On the first flange 21 is supported Return spring 23 from which in the present design of Fuel injection valve 1 by a sleeve 24 Bias is brought.
  • In the valve needle guide 14, in Anchor 20 and the valve seat body 5 extend Fuel channels 30a to 30c. The fuel gets over one supplied central fuel supply 16 and by a Filter element 25 filtered.
  • the fuel injection valve 1 is by a seal 28 against a not further sealed fuel distribution line sealed.
  • annular damping element 32 On the discharge side of the armature 20 is a annular damping element 32, which consists of a Elastomer material consists, arranged. It lies on one second flange 31, which via a weld 33rd non-positively connected to the valve needle 3.
  • the armature 20 drops sufficient reduction of the magnetic field by the pressure of the Return spring 23 from the inner pole 13, causing the with the valve needle 3 in communication first flange 21st moved against the stroke direction.
  • the valve needle 3 is thereby moved in the same direction, causing the Valve closing body 4 touches on the valve seat surface 6 and the fuel injection valve 1 is closed.
  • valve needle 3 is, as already described above, thus stored exclusively downstream of the armature 20, from which unfavorable leverage and thus offsets of the Ankers 20 result. This is especially through Manufacturing tolerances of the valve needle guide 14 reinforced. According to the invention, therefore, the armature 20 has a wave-shaped guide collar 34, which on the anchor Is formed 20 that he lead the anchor 20 offset can.
  • the measures according to the invention are shown in FIGS. 2 and 3 and in the following description explained.
  • Fig. 2 shows in an excerpted sectional view of the in Fig. 1 with II designated area of the invention designed fuel injection valve. 1
  • the fuel injection valve 1 has a Anchor 20, which provided with a guide collar 34 is.
  • the armature 20 is integral with the guide collar 34 trained and is for example by turning produced.
  • the guide collar 34 is at one Counter surface 41 forming inner wall 38 of the recess 40th the outer pole 9 stored.
  • the guide collar 34 has Flats 42 and therefore lies on the counter surface 41st not everywhere, so that between the guide collar 34 and the counter surface a plurality of recesses 40 are present.
  • Fig. 3 shows a schematic section along the line III-III in Fig. 2 by the invention with the Measures designed anchor 20 of the Fuel injection valve 1.
  • the guide collar 34 is, as already mentioned, in present embodiment with flats 42nd Wavy, whereby bearing surfaces 35 with recessed areas 36 alternate.
  • By the deepened Areas 36 may be the centrally supplied fuel Anchor 20 flow around and further into a recess 40 of the Fuel injection valve 1 flow to the sealing seat reach.
  • the wave-shaped guide collar 34 lies with the Contact surfaces 35 on the inner wall 38 of the outer pole 9 of the Magnetic circuit and is characterized by the outer pole. 9 guided.
  • the recessed areas 36 of the wavy guide collar 34 ensure a fast outflow of the fuel the working gap 27. This allows the hydraulic losses in the working gap 27 when tightening or falling off the armature 20th be kept low.
  • the invention is not limited to that shown Embodiment limited and z. B. also for the outside opening fuel injection valves 1 suitable.

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)

Claims (5)

  1. Injecteur de carburant (1), en particulier pour installations d'injection de carburant de moteurs à combustion interne, comprenant une aiguille de soupape (3) qui coopère avec une surface de siège de soupape (6) pour former une portée étanche, et un induit (20) relié à l'aiguille de soupape (3) et sollicité dans un sens de fermeture par un ressort de rappel (23) et qui coopère avec une bobine magnétique (10), l'induit (20) présentant une collerette de guidage (34) formée sur l'induit le long de sa périphérie et guidée le long d'une surface conjuguée (41), la collerette de guidage (34) présentant des méplats (42) qui s'écartent d'un contour extérieur circulaire de l'induit (20),
    caractérisé en ce que
    l'induit (20) présente un contour extérieur ondulé dans la région de la collerette de guidage (34).
  2. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    la collerette de guidage (34) présente des surfaces de contact (35) qui sont guidées le long d'une paroi intérieure (38) d'un pôle extérieur (9).
  3. Injecteur de carburant selon la revendication 2,
    caractérisé en ce que
    la collerette de guidage (34) présente des régions déprimées (36) qui alternent avec les surfaces de contact (35) dans la direction périphérique.
  4. Injecteur de carburant selon une des revendications précédentes,
    caractérisé en ce que
    la collerette de guidage (34) est formée d'une seule pièce avec l'induit (20).
  5. Injecteur de carburant selon une des revendications précédentes,
    caractérisé en ce que
    la collerette de guidage (34) se trouve dans la région du maximum du flux magnétique radial.
EP02754260A 2001-09-05 2002-06-21 Soupape d'injection de carburant Expired - Lifetime EP1430217B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10143500 2001-09-05
DE10143500A DE10143500A1 (de) 2001-09-05 2001-09-05 Brennstoffeinspritzventil
PCT/DE2002/002298 WO2003027482A1 (fr) 2001-09-05 2002-06-21 Soupape d'injection de carburant

Publications (2)

Publication Number Publication Date
EP1430217A1 EP1430217A1 (fr) 2004-06-23
EP1430217B1 true EP1430217B1 (fr) 2005-08-17

Family

ID=7697797

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02754260A Expired - Lifetime EP1430217B1 (fr) 2001-09-05 2002-06-21 Soupape d'injection de carburant

Country Status (7)

Country Link
US (1) US7093779B2 (fr)
EP (1) EP1430217B1 (fr)
JP (1) JP4739668B2 (fr)
KR (1) KR100878132B1 (fr)
CN (1) CN100416083C (fr)
DE (2) DE10143500A1 (fr)
WO (1) WO2003027482A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
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 (fr) * 2016-12-23 2018-06-27 Continental Automotive GmbH Ensemble de soupape comprenant une armature avec surfaces de guidage et passages d'écoulement et soupape d'injection

Family Cites Families (20)

* Cited by examiner, † Cited by third party
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 (fr) * 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

Also Published As

Publication number Publication date
US20060011751A1 (en) 2006-01-19
US7093779B2 (en) 2006-08-22
JP2005504216A (ja) 2005-02-10
KR100878132B1 (ko) 2009-01-14
DE10143500A1 (de) 2003-03-20
EP1430217A1 (fr) 2004-06-23
DE50203981D1 (de) 2005-09-22
WO2003027482A1 (fr) 2003-04-03
JP4739668B2 (ja) 2011-08-03
CN1473240A (zh) 2004-02-04
KR20040044852A (ko) 2004-05-31
CN100416083C (zh) 2008-09-03

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