EP1550804A1 - Injecteur de carburant - Google Patents

Injecteur de carburant Download PDF

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Publication number
EP1550804A1
EP1550804A1 EP04106142A EP04106142A EP1550804A1 EP 1550804 A1 EP1550804 A1 EP 1550804A1 EP 04106142 A EP04106142 A EP 04106142A EP 04106142 A EP04106142 A EP 04106142A EP 1550804 A1 EP1550804 A1 EP 1550804A1
Authority
EP
European Patent Office
Prior art keywords
fuel injection
valve needle
armature
valve
injection 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
Application number
EP04106142A
Other languages
German (de)
English (en)
Other versions
EP1550804B1 (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 EP1550804A1 publication Critical patent/EP1550804A1/fr
Application granted granted Critical
Publication of EP1550804B1 publication Critical patent/EP1550804B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F02M61/16—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
    • F02M51/0671—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
    • F02M51/0682—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 the body being hollow and its interior communicating with the fuel flow
    • 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
    • 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
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8053—Fuel injection apparatus manufacture, repair or assembly involving mechanical deformation of the apparatus or parts thereof
    • 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
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8084—Fuel injection apparatus manufacture, repair or assembly involving welding or soldering
    • 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
    • F02M2200/85—Mounting of fuel injection apparatus
    • F02M2200/852—Mounting of fuel injection apparatus provisions for mounting the fuel injection apparatus in a certain orientation, e.g. markings or notches

Definitions

  • the invention is based on a fuel injection valve according to the preamble of claim 1.
  • a Fuel injection valve in particular for direct Injecting fuel into the combustion chamber of a Internal combustion engine known.
  • the fuel injector comprises an armature which cooperates with a magnetic coil, and a non-positively connected to the anchor Valve needle, on which a valve closing body is provided, the together with a valve seat a sealing seat forms.
  • the valve needle points at an inflow end one formed with the valve needle in one piece collar-shaped anchor stop on which the anchor strikes, with a Mitauerflansch the anchor so engages that the driving flange in the inflow side End of the valve needle inserted and connectable with this is.
  • a disadvantage of the known from DE 101 08 945 A1 Fuel injection valve is in particular the Manufacturing effort through the numerous items and the This required number of welds for connecting the individual components during pre-assembly.
  • the Valve needle loosely rotatable in the armature, causing conditional by the manufacturing tolerances of the components Hub Sungen and thus changes in the amount of fuel injected result.
  • the fuel injection valve according to the invention with the characterizing features of the main claim has In contrast, the advantage that the valve needle in a simple Way by deep drawing stepped manufactures, so that itself at one stage of the valve needle without further Mit instructionalflansche a positive opening dynamics influencing Vorhubfeder can be arranged.
  • Vorhubfeder as spiral, Plate or corrugated spring in a simple manner is.
  • the anchor, Vorhubfeder, Valve needle and anchor stop existing overall component with be pre-assembled to a maximum of one weld.
  • valve needle a Vermosfix ist has, which stroke changes counteracts. This engages a bulge of the valve needle in a simple manner in a recess of the anchor.
  • a fuel injection valve 1 is in the form of a Fuel injection valve for fuel injection systems of mixture-compacting, externally ignited Internal combustion engine 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 connected to a valve closing body 4 in Operative connection, with a on a valve seat body. 5 arranged valve seat surface 6 to a sealing seat interacts.
  • the fuel injection valve 1 acts it is in the exemplary embodiment to an inwardly opening Fuel injection valve 1, which via a Spray opening 7 has.
  • the nozzle body 2 is preferably by means of welding with an outer pole 9 a Magnetic coil 10 connected.
  • the magnetic coil 10 is in one Coil housing 11 encapsulated and on a bobbin 12th wound, which at an inner pole 13 of the magnetic coil 10th is applied.
  • the inner pole 13 and the outer pole 9 are connected by a Split 26 separated from each other and rely on a Connecting component 29 from.
  • the magnetic coil 10 is connected via a Line 19 of a via an electrical plug contact 17th energized electric current.
  • the plug contact 17 is surrounded by a plastic sheath 18, the Inner pole 13 may be molded.
  • the valve needle 3 is in the present embodiment thin-walled hollow cylindrical and has a central recess 8. To the fuel line to Sealing seat serve flow openings 14, which are in the wall the valve needle 3 are introduced.
  • the valve needle 3 points a collar-shaped anchor stop 32, with the Valve needle 3 is preferably welded. On the Anchor stop 32 is supported by an armature 20. This one stands via a shoulder 21 frictionally with the valve needle. 3 in connection.
  • the shoulder 21 is also here tubular and formed integrally with the armature 20. Between the shoulder 21 of the armature 20 and a step 35 the valve needle 3 is a Vorhubfeder 15 is arranged, which defines an anchor path.
  • the valve needle 3 is, as explained in more detail below, by deep drawing manufacturable and multi-tiered trained.
  • a return spring 23 is supported, which in the present design of the Fuel injection valve 1 by a sleeve 24 Bias is brought.
  • the return spring 23 acts on the valve needle 3 so that in de-energized State of the solenoid 10 of the valve closing body 4 in sealing system is held on the valve seat surface 6.
  • the fuel which has a central fuel supply 16 is fed and filtered by a filter element 25, is through a central recess 22 of the Fuel injection valve 1, the recess 8 of the Valve needle 3 and via the flow openings 14 for Spray opening 7 passed.
  • the fuel injection valve 1 is by a seal 28 against a not further sealed illustrated distribution line.
  • valve needle 3 After passing through the forward stroke against the force of Vorhubfeder 15 takes the armature 20, the valve needle 3 in Lifting direction with. The with the valve needle 3 in operative connection standing valve closing body 4 lifts from the valve seat surface 6, whereby the over the recess 8 in the valve needle. 3 and through the flow openings 14 to the injection opening. 7 guided fuel is hosed down.
  • the armature 20 drops sufficient reduction of the magnetic field by the pressure of the Return spring 23 on the valve needle 3 from the inner pole 13, whereby this moves against the stroke direction. Thereby sets the valve closing body 4 on the valve seat surface. 6 on, and the fuel injection valve 1 is closed.
  • the armature 20 is seated on the anchor stop 32.
  • Such a trained valve needle 3 has several Advantages. First, there are fewer components and thus fewer welds to join the components on the other hand, the manufacturing process of the Deep drawing for the valve needle 3 as such cost.
  • Vorhubfeder 15 In addition to improving the opening dynamics causes the Vorhubfeder 15 a damping effect against Preller of Ankers 20 at anchor stop 32 when closing the Fuel injection valve 1. Sets namely the armature 20 on the anchor stop 32, it may be a renewed, short-term lifting of the armature 20 from the anchor stop 32nd come. The Vorhubfeder 15 brakes the resulting Movement of the armature 20 in the stroke direction, so that the Valve needle 3 unaffected by the movement of the armature 20th stays and no unwanted, short-term Opening operations of the fuel injection valve 1 occur.
  • the anchor stop 32 can also by deep drawing be prepared and, for example, completely without welding be fixed by press fitting to the valve needle 3.
  • Vorhubfeder 15, armature 20th and anchor stop 32 existing overall component is thus a maximum of one weld 34 necessary while at Fuel injection valves 1 according to the prior art at least six individual components over at least three Welds must be connected.
  • Fig. 2 are two different variants for a Inventively designed fuel injection valve. 1 with a correspondingly designed valve needle 3rd partially in the area of the valve needle 3 and the armature 20 shown.
  • Links in Fig. 2 is already the above described embodiment shown in which the Vorhubfeder 15 in the form of a coil spring 15th is executed.
  • the Vorhubfeder 15 is preferably made of flat wire, so that the forward stroke is not changed.
  • the spring constant of the Vorhubfeder 15 is here substantially smaller than that of the return spring 23.
  • a flat spring such. an open or closed corrugated ring or a disc spring used become. This has the advantage of shorter overall length.
  • valve needle 3 has a Vermosfix ist on which in the form of a bulge 31 of the valve needle 3rd is executed.
  • Fig. 3 is a schematic section through the valve needle 3 in the region of the bulge 31st shown schematically.
  • the armature 20 has a corresponding indentation 33, in which the bulge 31 of the valve needle 3 engages positively. Subsequently can the valve needle 3 is no longer relative to the armature 20th turn, whereby the set stroke remains constant. Functional changes of the fuel injection valve 1 are thus excluded, the endurance behavior becomes positive affected.
  • the invention is not limited to those shown Embodiments limited and for other forms anchors 20, for example for diving and flat anchors, as well as any designs of fuel injection valves. 1 applicable.

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)
EP20040106142 2003-12-29 2004-11-29 Injecteur de carburant Active EP1550804B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10361761 2003-12-29
DE2003161761 DE10361761A1 (de) 2003-12-29 2003-12-29 Brennstoffeinspritzventil

Publications (2)

Publication Number Publication Date
EP1550804A1 true EP1550804A1 (fr) 2005-07-06
EP1550804B1 EP1550804B1 (fr) 2007-02-21

Family

ID=34559784

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20040106142 Active EP1550804B1 (fr) 2003-12-29 2004-11-29 Injecteur de carburant

Country Status (3)

Country Link
EP (1) EP1550804B1 (fr)
JP (1) JP2005195015A (fr)
DE (2) DE10361761A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7721713B2 (en) 2006-02-17 2010-05-25 Hitachi, Ltd. Electromagnetic fuel injector and method for assembling the same
EP2527637A1 (fr) * 2011-05-23 2012-11-28 Continental Automotive GmbH Injecteur pour injection de fluides
CN102828873A (zh) * 2011-06-15 2012-12-19 欧陆汽车有限责任公司 喷射阀的阀组件和喷射阀
US8505835B2 (en) 2005-11-02 2013-08-13 Robert Bosch Gmbh Fuel injector
WO2013167597A1 (fr) * 2012-05-08 2013-11-14 Continental Automotive Gmbh Boîtier de soupapes destiné à une soupape d'injection et soupape d'injection

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4576345B2 (ja) 2006-02-17 2010-11-04 日立オートモティブシステムズ株式会社 電磁式燃料噴射弁
JP4211814B2 (ja) 2006-07-13 2009-01-21 株式会社日立製作所 電磁式燃料噴射弁
DE102007050817A1 (de) 2007-10-24 2009-04-30 Robert Bosch Gmbh Elektromagnetisch betätigbares Ventil

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3843862A1 (de) * 1988-12-24 1990-06-28 Bosch Gmbh Robert Elektromagnetisch betaetigbares ventil
DE10065528A1 (de) * 2000-12-28 2002-07-04 Bosch Gmbh Robert Brennstoffeinspritzventil
DE10108945A1 (de) * 2001-02-24 2002-09-05 Bosch Gmbh Robert Brennstoffeinspritzventil
WO2003012284A1 (fr) * 2001-07-27 2003-02-13 Robert Bosch Gmbh Soupape d'injection de carburant
DE10142302A1 (de) * 2001-08-29 2003-03-20 Bosch Gmbh Robert Brennstoffeinspritzventil

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3843862A1 (de) * 1988-12-24 1990-06-28 Bosch Gmbh Robert Elektromagnetisch betaetigbares ventil
DE10065528A1 (de) * 2000-12-28 2002-07-04 Bosch Gmbh Robert Brennstoffeinspritzventil
DE10108945A1 (de) * 2001-02-24 2002-09-05 Bosch Gmbh Robert Brennstoffeinspritzventil
WO2003012284A1 (fr) * 2001-07-27 2003-02-13 Robert Bosch Gmbh Soupape d'injection de carburant
DE10142302A1 (de) * 2001-08-29 2003-03-20 Bosch Gmbh Robert Brennstoffeinspritzventil

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8505835B2 (en) 2005-11-02 2013-08-13 Robert Bosch Gmbh Fuel injector
US7721713B2 (en) 2006-02-17 2010-05-25 Hitachi, Ltd. Electromagnetic fuel injector and method for assembling the same
US7946274B2 (en) 2006-02-17 2011-05-24 Hitachi, Ltd. Electromagnetic fuel injector and method for assembling the same
US8113177B2 (en) 2006-02-17 2012-02-14 Hitachi, Ltd. Electromagnetic fuel injector and method for assembling the same
EP2527637A1 (fr) * 2011-05-23 2012-11-28 Continental Automotive GmbH Injecteur pour injection de fluides
WO2012160100A1 (fr) * 2011-05-23 2012-11-29 Continental Automotive Gmbh Injecteur pour l'injection de fluide
US9316194B2 (en) 2011-05-23 2016-04-19 Continental Automotive Gmbh Injector for injecting fluid
CN102828873A (zh) * 2011-06-15 2012-12-19 欧陆汽车有限责任公司 喷射阀的阀组件和喷射阀
EP2535552A1 (fr) * 2011-06-15 2012-12-19 Continental Automotive GmbH Ensemble de soupape pour soupape dýinjection et soupape dýinjection
US8931718B2 (en) 2011-06-15 2015-01-13 Continental Automotive Gmbh Valve assembly for an injection valve and injection valve
WO2013167597A1 (fr) * 2012-05-08 2013-11-14 Continental Automotive Gmbh Boîtier de soupapes destiné à une soupape d'injection et soupape d'injection
US9651011B2 (en) 2012-05-08 2017-05-16 Continental Automotive Gmbh Valve assembly for an injection valve and injection valve

Also Published As

Publication number Publication date
DE502004002949D1 (de) 2007-04-05
DE10361761A1 (de) 2005-07-28
EP1550804B1 (fr) 2007-02-21
JP2005195015A (ja) 2005-07-21

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