EP1402172A1 - Soupape d'injection de carburant - Google Patents

Soupape d'injection de carburant

Info

Publication number
EP1402172A1
EP1402172A1 EP02745088A EP02745088A EP1402172A1 EP 1402172 A1 EP1402172 A1 EP 1402172A1 EP 02745088 A EP02745088 A EP 02745088A EP 02745088 A EP02745088 A EP 02745088A EP 1402172 A1 EP1402172 A1 EP 1402172A1
Authority
EP
European Patent Office
Prior art keywords
filter element
armature
fuel injection
injection valve
sleeve
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
Application number
EP02745088A
Other languages
German (de)
English (en)
Other versions
EP1402172B1 (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

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
    • F02M61/04—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 injection valve according to the type of the main claim.
  • a fuel injection valve is known from DE 44 21 881 AI, the valve needle of which has a filter element mounted in or on it.
  • the function of the filter element is to keep all particles and contaminants upstream of the sealing seat inside the fuel injection valve away from the sealing seat and thus to avoid blockages or leaks at the sealing seat.
  • the filter element is designed in the form of a sieve stocking which at least partially envelops the valve needle.
  • a disadvantage of the fuel injector known from DE 44 21 881 AI is in particular that the manufacture and assembly of a stocking-shaped filter element is complex and therefore cost-intensive. Due to the large surface area of the filter element, due to the strong valve needle movement, it is susceptible to twisting and shifting when the fuel injector is in operation. Advantages of the invention
  • the fuel injector according to the invention with the characterizing features of the main claim has the advantage that, in addition to a filter element possibly arranged in the fuel supply, a further filter element is provided, which is arranged downstream of the armature and offers a simple possibility of either a second, finer filtering of the flowing through To enable fuel in addition to the filtering by the first filter element or to replace the first filter element with the advantage of the shorter overall length of the fuel injector.
  • the second filter element can be produced in a simple manner from a mesh screen or by making openings in an annular plate.
  • the openings can be produced in a variety of ways, for example by means of laser drilling, etching, eroding or punching.
  • the filter element can either be inserted loosely into the sleeve arranged downstream of the armature , or can be clamped or welded to it in order to fix the filter element.
  • Fig. 1 is a schematic section through an embodiment of a fuel injection valve 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.
  • a fuel injector 1 shown in FIG. 1 is in the form of a fuel injector 1 for fuel injection systems of mixture-compressing, spark-ignition 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 injection valve 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.
  • the fuel injection valve 1 is a fuel injection valve 1 that opens inwards and has a spray opening 7.
  • the nozzle body 2 is sealed by a seal 8 against an outer pole 9 of a solenoid 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 magnet coil 10.
  • the inner pole 13 and the outer pole 9 are through a constriction 26 separated from one another 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.
  • a paired adjusting shackle 15 is used for stroke adjustment.
  • An armature 20 is located on the other side of the adjusting disk 15.
  • Flange 21 is connected.
  • a return spring 23 is supported on the flange 21, which in the present design of the fuel injector 1 is preloaded by a sleeve 24.
  • fuel channels 30a to 30c run, which carry the fuel , which is supplied via a central fuel supply 16 and a first filter element 25a is filtered, to the spray opening 7.
  • the fuel injection valve 1 is sealed by a seal 28 against a fuel line (not shown further).
  • a damping element 32 formed as an O-ring and consisting of an elastomer material is arranged in a recess 35. It rests on a shoulder-like widening 36 of a preferably deep-drawn sleeve 31, which is non-positively connected to the valve needle 3 via a weld seam 33.
  • a second filter element 25b is arranged, which is designed in the form of a flat filter 25 and can consist, for example, of screen fabric or as a round plate with many small openings.
  • Flow-through openings 37 are formed in the sleeve 31, which are covered by the second filter element 25b, as a result of which the valve seat is protected from contamination, by coarse particles in the fuel, and malfunctions of the fuel injection valve 1 are avoided.
  • 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 flange 21 connected to the valve needle 3 moves against the stroke direction.
  • the valve needle 3 is thereby moved in the same direction, as a result of which the valve closing body 4 is placed on the valve seat surface 6 and. the fuel injector 1 is closed.
  • FIG. 2 shows an enlarged sectional view of an enlarged view of area II in FIG. 1.
  • valve needle 3 A part of the valve needle 3 is shown, the flange 21 welded to it, the 'sleeve 31 and the one in the Recess 35 of the armature 20 inserted second filter element 25b designed according to the invention.
  • flange 21 is first welded to valve needle 3 via weld 22.
  • the damping element 32 is inserted into the recess 35 formed in the downstream end face 34 of the armature 20 and the armature 20 with the damping element 32 inserted is fitted onto the valve needle 3.
  • second filter element 25b is inserted into the stepped sleeve 31, which can preferably be produced by deep drawing and has, preferably, punched through-openings 37 for the fuel line.
  • the sleeve 31 is then pushed together with the second filter element 25b onto the valve needle 3 and also connected to the valve needle 3 via a weld 33.
  • the second filter element 25b is arranged so that it covers the flow openings 37 in the pot-shaped sleeve 31.
  • the shape and fit of the armature 20 ensures that the fuel can flow exclusively through the fuel channels 30a in the armature and the flow openings 37 in the sleeve 31 in the direction of the sealing seat.
  • coarse particles in the fuel can be filtered out by means of the second filter element 25b inserted in the sleeve 31, so that the sealing seat is protected against impurities which can lead to malfunctions of the fuel injection valve 1.
  • the second filter element 25b is preferably designed in the form of a flat filter 25b, which can be made from a screen fabric.
  • the second filter element 25b can also be produced as a round plate from a thin sheet and provided with round or elongated openings through which the fuel flows.
  • the openings can punched, eroded, etched or laser drilled.
  • the openings are preferably smaller than the openings of the upstream first filter element 25a, which increases the effectiveness of fuel filtering.
  • the second filter element 25b can be fixed in the sleeve 31 in various ways in order to prevent slippage and subsequent transfer of dirt particles into the fuel flow.
  • the second filter element 25b is dimensioned so that its diameter corresponds to the inside width of the sleeve 31, it can be inserted into the cup 31 without attachment. If the second filter element 25b is dimensioned somewhat larger, it can be pressed into the sleeve 31 by means of radial pressure.
  • the second filter element 25b is somewhat smaller than the sleeve 31.
  • the second filter element 25b can be fixed to the sleeve 31 by means of laser stitching or spot welding with at least one point.
  • axial bracing of the filter element 25b between the armature 20 and the sleeve 31 can also be considered. This is particularly useful because the armature 20 is in any case braced with the sleeve 31 for the purpose of damping.
  • the invention is not limited to the illustrated embodiments and z. B. also suitable for outward opening fuel injection valves 1 or other anchor shapes, for example flat anchors.

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)
  • Manufacturing & Machinery (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

L'invention concerne une soupape d'injection de carburant (1) destinée à des systèmes d'injection de carburant de moteurs à combustion interne. Ladite soupape comporte un pointeau de soupape (3) interagissant avec une surface de siège de soupape (6) afin de former un siège d'étanchéité, et un induit (20) entrant en contact avec le pointeau de soupape (3), ledit induit (20) pouvant se déplacer axialement sur le pointeau de soupape (3). Par ailleurs, ledit induit est amorti par rapport à une douille (31) en forme de pot, reliée par friction au pointeau de soupape (3), logée côté aval de l'induit (20), par l'intermédiaire d'un élément amortisseur (32) logé dans une cavité (35) sur un côté frontal (34) côté aval de l'induit. La soupape d'injection de carburant selon l'invention comporte par ailleurs un élément filtre (25b) logé côté aval de l'induit dans la douille en forme de pot (31).
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 true EP1402172A1 (fr) 2004-03-31
EP1402172B1 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 (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
EP2150255A4 (fr) 2007-05-10 2011-10-05 Glaxosmithkline Llc Dérivés de quinoxaline comme inhibiteurs de p13 kinase
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
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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JPH04200710A (ja) 1990-11-30 1992-07-21 Toyobo Co Ltd フィルターユニット
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DE69306766T2 (de) * 1992-03-05 1997-05-28 Siemens Automotive Corp Lp Brennstoffeinspritzdüse mit internen filter
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Also Published As

Publication number Publication date
US20040099753A1 (en) 2004-05-27
KR20030036712A (ko) 2003-05-09
DE50201582D1 (de) 2004-12-23
EP1402172B1 (fr) 2004-11-17
US6994281B2 (en) 2006-02-07
JP2004521252A (ja) 2004-07-15
DE10130205A1 (de) 2003-01-02
WO2003001051A1 (fr) 2003-01-03
JP4008875B2 (ja) 2007-11-14

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