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EP1402172B1 - Soupape d'injection de carburant - Google Patents

Soupape d'injection de carburant Download PDF

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Publication number
EP1402172B1
EP1402172B1 EP02745088A EP02745088A EP1402172B1 EP 1402172 B1 EP1402172 B1 EP 1402172B1 EP 02745088 A EP02745088 A EP 02745088A EP 02745088 A EP02745088 A EP 02745088A EP 1402172 B1 EP1402172 B1 EP 1402172B1
Authority
EP
European Patent Office
Prior art keywords
filter element
fuel injection
injection valve
sleeve
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.)
Expired - Lifetime
Application number
EP02745088A
Other languages
German (de)
English (en)
Other versions
EP1402172A1 (fr
Inventor
Ferdinand Reiter
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 EP1402172A1 publication Critical patent/EP1402172A1/fr
Application granted granted Critical
Publication of EP1402172B1 publication Critical patent/EP1402172B1/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
    • 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
    • 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
    • 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
    • F02M61/165—Filtering elements specially adapted in fuel inlets to injector
    • 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
    • F02M2200/02—Fuel-injection apparatus having means for reducing wear
    • 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
    • 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
    • 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
    • F02M51/0614—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of electromagnets or fixed armature
    • 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

Definitions

  • the invention is based on a fuel injector according to the genus of the main claim.
  • valve needle a in or has filter element mounted on it.
  • the Filter element has the function of all particles and Contamination upstream of the sealing seat inside the fuel injector from the sealing seat and thus blockages or leaks at the sealing seat avoid.
  • the filter element is in the form of a Sieve stocking formed, the valve needle at least partially enveloped.
  • a disadvantage of the known from DE 44 21 881 A1 Fuel injector in particular is that the Manufacture and assembly of a stocking-shaped Filter element is complex and therefore expensive. By this is due to the large surface of the filter element susceptible to strong valve needle movement Twists and shifts when operating the Fuel injector.
  • the fuel injector according to the invention with the has characteristic features of the main claim in contrast, the advantage that in addition to a possibly in the fuel supply arranged filter element another Filter element is provided, which downstream of the Anchor is arranged and offers an easy way either a second, finer filtering of the flowing through Fuel in addition to filtering by the first Enable filter element or the first filter element with the advantage of the shorter overall length of the Replace fuel injector.
  • the second Filter element in a simple manner from a mesh screen or by making openings in an annular plate can be produced.
  • the openings are varied Way, for example by means of laser drilling, etching, eroding or punching.
  • the filter element is optional loosely in the sleeve arranged downstream of the armature can be inserted or braced with this or can be welded to fix the filter element.
  • a fuel injector 1 shown in FIG. 1 is in the form of a fuel injector 1 for Fuel injection systems from mixture-compressing, spark-ignition internal combustion engines.
  • the Fuel injection valve 1 is particularly suitable for not directly injecting fuel into one Shown combustion chamber 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 with one on one Valve seat body 5 arranged valve seat surface 6 into one Sealing seat interacts.
  • the fuel injector 1 in the exemplary embodiment it is an inward opening fuel injector 1, which has a Spray opening 7 has.
  • the nozzle body 2 is through a Seal 8 against an outer pole 9 of a magnet coil 10 sealed.
  • the magnet coil 10 is in a coil housing 11 encapsulated and wound on a bobbin 12, which bears against an inner pole 13 of the magnet coil 10.
  • the Inner pole 13 and outer pole 9 are through a constriction 26 separated from each other and not by one another ferromagnetic connecting member 29 connected.
  • the Solenoid 10 is connected via a line 19 from one to the other an electrical plug contact 17 feedable electrical Current excited.
  • the plug contact 17 is one Surround plastic sheath 18 on the inner pole 13th can be
  • the valve needle 3 is in a valve needle guide 14 led, which is disc-shaped.
  • a paired shim 15 is used for stroke adjustment the other side of the shim 15 is a Anchor 20.
  • This is non-positively via a flange 21 with the valve needle 3 in connection, which by a Weld 22 with the. Flange 21 is connected.
  • On the Flange 21 is supported by a return spring 23, which in the present design of the fuel injector 1 is preloaded by a sleeve 24.
  • In the Valve needle guide 14, in armature 20 and on valve seat body 5 run fuel channels 30a to 30c, which the fuel, which is supplied via a central fuel supply 16 and a first filter element 25a is filtered for Conduct spray opening 7.
  • the fuel injector 1 is no further by a seal 28 against one fuel line shown sealed.
  • a damping element designed as an O-ring 32, which consists of an elastomer material, arranged. It lies on a shoulder-like widening 36 of a preferably deep-drawn sleeve 31, which via a weld 33 with the valve needle 3 is connected.
  • a second filter element 25b which is in the form of a flat filter 25 is formed and, for example, from mesh or as Ronde with many small openings can exist.
  • Flow-through openings 37 are formed in the sleeve 31 are covered by the second filter element 25b, whereby the valve seat from contamination by coarse particles in the Fuel is protected and malfunctioning Fuel injector 1 can be avoided.
  • FIG. 2 A more detailed description and description of the Measures according to the invention is the description of FIG. 2 refer to.
  • Fig. 2 shows an excerpted sectional view enlarged view of area II in FIG. 1.
  • valve needle 3 A part of the valve needle 3 is shown, which is thus welded flange 21, the sleeve 31 and in the Recess 35 of the armature 20 inserted according to the invention configured second filter element 25b.
  • the second filter element 25b is arranged so that it the flow openings 37 in the cup-shaped sleeve 31 covers. Due to the shape and fit of the armature 20 ensures that the fuel is obtained exclusively from the Fuel channels 30a in the armature and the flow openings 37 can flow in the sleeve 31 towards the sealing seat. Thereby can be inserted by means of the second sleeve 31 Filter element 25b in addition to that in the central Fuel supply 16 arranged first filter element 25a Coarse particles are filtered out in the fuel, so that the Sealing seat is protected from contamination, which too Malfunction of fuel injector 1 can.
  • the second filter element 25b is preferably in shape a flat filter 25b formed from a sieve fabric can be made.
  • the second filter element 25b can also made as a blank from a thin sheet and with round or elongated openings through which the Fuel flows, are provided.
  • the openings can punched, eroded, etched or laser drilled.
  • the openings are preferably smaller than the openings of the upstream first filter element 25a, whereby the Effectiveness of fuel filtering is increased.
  • the second filter element 25b can be used in various ways the sleeve 31 can be fixed to prevent slipping and subsequent transfers of dirt particles into the Avoid fuel flow.
  • the second filter element 25b dimensioned so that its Diameter corresponds to the inside width of the sleeve 31, can it is inserted into the pot-shaped sleeve 31 without attachment his.
  • the second filter element 25b is somewhat larger dimensioned, it can be pressed into the radial pressure Sleeve 31 be pressed.
  • the second filter element 25b is slightly smaller than the sleeve 31.
  • the second filter element 25b can be used Laser stitching or spot welding with at least one spot be fixed to the sleeve 31.
  • the shape differs from the shape of the flat filter 25b Form, for example a plate-shaped or curved Filter element 25b, an axial bracing of the Filter element 25b between the armature 20 and the sleeve 31 in Be considered. This is particularly useful because the armature 20 with the sleeve 31 for the purpose of Damping is definitely tensioned.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fuel-Injection Apparatus (AREA)

Claims (12)

  1. Injecteur de carburant (1) pour des installations d'injection de carburant de moteurs à combustion interne, comprenant une aiguille de soupape (3) coopérant avec une surface de siège de soupape (6) pour former un siège d'étanchéité, un induit (20) en prise sur l'aiguille de soupape (3) et un élément filtrant (25b),
    caractérisé en ce que
    l'induit (20) est axialement mobile le long de l'aiguille de soupape (3) et amorti par un élément amortisseur (32) disposé dans un évidement (35) dans une face frontale aval (34) de l'induit (20), en regard d'une douille (31) en forme de pot disposée côté aval de l'induit (20) et reliée de force à l'aiguille de soupape (3), et l'élément filtrant (25b) est disposé côté aval de l'induit (20) dans la douille (31) en forme de pot.
  2. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    l'élément filtrant (25b) présente la forme d'un filtre plat.
  3. Injecteur de carburant selon la revendication 1 ou 2,
    caractérisé en ce que
    l'élément filtrant (25b) est réalisé à partir d'une toile métallique.
  4. Injecteur de carburant selon la revendication 1 ou 2,
    caractérisé en ce que
    l'élément filtrant (25b) présente la forme d'une rondelle avec plusieurs orifices.
  5. Injecteur de carburant selon la revendication 4,
    caractérisé en ce que
    les orifices de l'élément filtrant (25b) sont ronds ou allongés.
  6. Injecteur de carburant selon la revendication 4 ou 5,
    caractérisé en ce que
    les orifices sont réalisés par découpage, érosion, gravure ou perçage laser.
  7. Injecteur de carburant selon l'une quelconque des revendications 1 à 6,
    caractérisé en ce que
    l'élément filtrant (26) est inséré libre dans la douille.
  8. Injecteur de carburant selon l'une quelconque des revendications 1 à 6,
    caractérisé en se que
    l'élément filtrant (26) est radialement pressé dans la douille (31).
  9. Injecteur de carburant selon l'une quelconque des revendications 1 à 6,
    caractérisé en ce que
    l'élément filtrant (26) est fixé dans la douille (31) par soudage.
  10. Injecteur de carburant selon l'une quelconque des revendications 1 à 9,
    caractérisé en ce que
    l'élément filtrant (26) est formé de manière à pouvoir être contraint axialement entre l'induit (20) et la douille (31).
  11. Injecteur de carburant selon l'une quelconque des revendications 1 à 10,
    caractérisé en ce que
    la douille (31) présente des ouvertures de passage (37) recouvertes par l'élément filtrant (26).
  12. Injecteur de carburant selon l'une quelconque des revendications 1 à 11,
    caractérisé en ce que
    les orifices de l'élément filtrant (25b) disposé dans la douille (31) en forme de pot sont plus petits que les orifices d'un élément filtrant (25a) disposé dans une conduite centrale d'alimentation en carburant (16).
EP02745088A 2001-06-22 2002-05-25 Soupape d'injection de carburant Expired - Lifetime EP1402172B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10130205 2001-06-22
DE10130205A DE10130205A1 (de) 2001-06-22 2001-06-22 Brennstoffeinspritzventil
PCT/DE2002/001927 WO2003001051A1 (fr) 2001-06-22 2002-05-25 Soupape d'injection de carburant

Publications (2)

Publication Number Publication Date
EP1402172A1 EP1402172A1 (fr) 2004-03-31
EP1402172B1 true EP1402172B1 (fr) 2004-11-17

Family

ID=7689115

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02745088A Expired - Lifetime EP1402172B1 (fr) 2001-06-22 2002-05-25 Soupape d'injection de carburant

Country Status (6)

Country Link
US (1) US6994281B2 (fr)
EP (1) EP1402172B1 (fr)
JP (1) JP4008875B2 (fr)
KR (1) KR20030036712A (fr)
DE (2) DE10130205A1 (fr)
WO (1) WO2003001051A1 (fr)

Families Citing this family (18)

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DE10326343A1 (de) * 2003-06-11 2004-12-30 Robert Bosch Gmbh Brennstoffeinspritzventil
DE102004009631A1 (de) * 2004-02-27 2005-09-15 Robert Bosch Gmbh Brennstoffeinspritzventil
DE102005019837A1 (de) * 2005-04-28 2006-11-02 Robert Bosch Gmbh Brennstoffeinspritzventil und Verfahren zu dessen Montage
TW200902008A (en) 2007-05-10 2009-01-16 Smithkline Beecham Corp Quinoxaline derivatives as PI3 kinase inhibitors
JP5394298B2 (ja) * 2010-03-26 2014-01-22 株式会社ケーヒン 電磁式燃料噴射弁
US8460422B2 (en) 2010-09-17 2013-06-11 Caterpillar Inc. Exhaust aftertreatment system, and engine service package having fuel filtering mechanism
KR101042596B1 (ko) * 2010-10-19 2011-06-20 윤창요 한글교습도구
EP2597296B1 (fr) * 2011-11-23 2014-10-29 Continental Automotive GmbH Ensemble de soupape pour soupape d'injection et soupape d'injection
DE102012202253A1 (de) * 2012-02-15 2013-08-22 Robert Bosch Gmbh Brennstoffeinspritzventil
JP5857952B2 (ja) 2012-12-26 2016-02-10 株式会社デンソー 燃料噴射弁
DE102013206600B4 (de) 2013-04-12 2015-08-06 Continental Automotive Gmbh Einspritzsystem zum Einspritzen von Kraftstoff in eine Brennkraftmaschine und Regelverfahren für ein solches Einspritzsystem
DE102013207555B3 (de) 2013-04-25 2014-10-09 Continental Automotive Gmbh Verfahren zur Einspritzmengenadaption
EP2796703B1 (fr) * 2013-04-26 2016-07-20 Continental Automotive GmbH Ensemble de soupape pour soupape d'injection et soupape d'injection
EP2860386A1 (fr) * 2013-10-10 2015-04-15 Continental Automotive GmbH Injecteur pour moteur à combustion
EP3076004B1 (fr) * 2015-04-02 2018-09-12 Continental Automotive GmbH Ensemble de soupape avec un élément de retenue de particules et soupape de fluide
EP3267026B1 (fr) * 2016-07-08 2019-05-29 Continental Automotive GmbH Ensemble de soupape pour soupape d'injection et soupape d'injection
GB202001710D0 (en) * 2020-02-07 2020-03-25 Delphi Automotive Systems Lux Fuel injector
CN114811067A (zh) * 2022-05-07 2022-07-29 江苏亿德隆石油机械有限公司 一种具有过滤功能的手动节流阀

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US5190223A (en) * 1988-10-10 1993-03-02 Siemens Automotive L.P. Electromagnetic fuel injector with cartridge embodiment
JPH04200710A (ja) 1990-11-30 1992-07-21 Toyobo Co Ltd フィルターユニット
JPH0510221A (ja) * 1991-07-03 1993-01-19 Nippondenso Co Ltd 電磁式燃料噴射弁
US5238192A (en) * 1991-12-18 1993-08-24 Siemens Automotive L.P. Filter for solenoid operated fluid metering devices
WO1993018299A1 (fr) 1992-03-05 1993-09-16 Siemens Automotive L.P. Injecteur de carburant comportant un filtre interne
US5325838A (en) * 1993-05-28 1994-07-05 Bennett David E Liquified petroleum gas fuel injector
DE4421881A1 (de) * 1994-06-23 1996-01-04 Bosch Gmbh Robert Ventilnadel
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US5769328A (en) * 1995-12-26 1998-06-23 General Motors Corporation Fuel interconnect for fuel injector
DE19638201B4 (de) 1996-09-19 2005-05-04 Robert Bosch Gmbh Brennstoffeinspritzventil
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Also Published As

Publication number Publication date
KR20030036712A (ko) 2003-05-09
DE50201582D1 (de) 2004-12-23
US6994281B2 (en) 2006-02-07
US20040099753A1 (en) 2004-05-27
DE10130205A1 (de) 2003-01-02
EP1402172A1 (fr) 2004-03-31
WO2003001051A1 (fr) 2003-01-03
JP2004521252A (ja) 2004-07-15
JP4008875B2 (ja) 2007-11-14

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