EP1262655B1 - Injecteur de carburant - Google Patents

Injecteur de carburant Download PDF

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Publication number
EP1262655B1
EP1262655B1 EP02011017A EP02011017A EP1262655B1 EP 1262655 B1 EP1262655 B1 EP 1262655B1 EP 02011017 A EP02011017 A EP 02011017A EP 02011017 A EP02011017 A EP 02011017A EP 1262655 B1 EP1262655 B1 EP 1262655B1
Authority
EP
European Patent Office
Prior art keywords
fuel injection
injection valve
armature
abutment
damping element
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
EP02011017A
Other languages
German (de)
English (en)
Other versions
EP1262655A2 (fr
EP1262655A3 (fr
Inventor
Martin Buehner
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 EP1262655A2 publication Critical patent/EP1262655A2/fr
Publication of EP1262655A3 publication Critical patent/EP1262655A3/fr
Application granted granted Critical
Publication of EP1262655B1 publication Critical patent/EP1262655B1/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
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/09—Fuel-injection apparatus having means for reducing noise
    • 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
    • F02M2200/90—Selection of particular materials
    • F02M2200/9015—Elastomeric or plastic materials

Definitions

  • the invention is based on a fuel injection valve according to the preamble of the main claim.
  • the disadvantage here is the impulse of the valve needle resulting noise when the anchor hits with his Stop surface on the counter stop surface.
  • the described constructive design serves debouncing when placing the valve needle on the valve seat surface.
  • the anchor with its stop surface on the Counter-attack surface entprellt.
  • the formation of a Sound pulses and its transmission in particular as Structure-borne noise is not prevented by debouncing.
  • From DE 198 16 315 is a fuel injection valve for Fuel injection systems of internal combustion engines known in particular for the direct injection of fuel into a combustion chamber of the internal combustion engine, the one through a Magnetic coil in a stroke direction against a first Return spring acted anchor and one with a Valve-closing body related valve needle having.
  • the valve needle has a first stop for the anchor moving on it, being the anchor additionally acted upon by a second return spring is. Further, a stationary second stop for the Anchor provided.
  • the second return spring acts on the Anchor against the stroke direction and stops in one Rest position with non-energized magnetic coil the anchor on the second stop so in Appendix, that the anchor of the s.der Valve needle trained first stop around a spaced predetermined distance.
  • this known embodiment of a fuel injection valve with one acting on the anchor second return spring does not prevent one Noise when hitting the anchor on a Stop for stroke limitation.
  • the known design is used only for Entprellung the placement of the valve needle on the Valve closing body.
  • the fuel injection valve according to the invention with the characterizing features of the main claim has In contrast, the advantage that during the stroke of the valve needle, before the anchor with its anchor stop the Counter-attack surface reached, the elastic Damping element is compressed and through this Delay no pulse peak occurs and the Noise is minimized.
  • the invention Fuel injector is also inexpensive and easy to manufacture, since only a recess in one of the Stop surfaces must be provided.
  • the damping element is in the Counter stop surface arranged.
  • the elastic damping element can then by jamming be fixed because this surface on any moving component is formed.
  • the recess is a circular, concentric with the valve needle Groove having a radius which is approximately the center between the smallest circumferential radius and the largest circumferential radius the counter stop surface corresponds.
  • the recess can be manufactured inexpensively, because the groove is concentric with a symmetry axis of the anchor lies, in which the valve needle is arranged.
  • typical Turned part becomes the anchor during its manufacture around this Symmetry axis rotatably clamped and an additional groove Can be installed with little effort.
  • the choice of Radius of the circular groove approximately in the middle of the free area the counter stop surface with respect to a radial cut gives a favorable force when hitting the Damping element and lowest possible vibrations and thus Sound DEVELOPMENT.
  • Fig. 1 a first invention Execution of a fuel injection valve 1 in one Overview representation are described. For the better Understanding the structural arrangement of the invention in Fuel injector 1, Fig. 1 apart from the measures according to the invention in terms of his Essential components known fuel injection valve. 1 represents.
  • the fuel injection valve 1 is in the form of a Fuel injection valve 1 for fuel injection systems of mixture-compacting, externally ignited Internal combustion engine running. It is particularly suitable for directly injecting 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 through a Seal 8 against an outer pole 9 of a magnetic coil 10th sealed.
  • the magnetic coil 10 is in a coil housing 11 encapsulated and wound on a bobbin 12, which rests against an inner pole 13 of the magnetic coil 10.
  • 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 disk-shaped. to Stroke adjustment is a paired shim 15.
  • An the other side of the dial 15 is the 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.
  • Fuel channels 30a to 30c 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 illustrated fuel line.
  • 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 has on its side facing away from the spray side Side an anchor stop surface 34, which with a Counter stop surface 35 cooperates and the stroke of Valve needle 3 limited.
  • an annular groove 36 of Counter stop surface 35 is an O-ring 37 as Inserted damping element.
  • 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.
  • FIG. 2 shows an enlarged sectional view of an enlarged view of the region II in FIG. 1. Shown is a part of the valve needle 3 which passes through the weld 22 at this welded first flange 21 and the armature 20 with the fuel channel 30a extending therein Anchor stop surface 34.
  • the anchor stop surface 34 cooperates with the counter stop surface 35 to limit the stroke of the valve needle 3 and the armature 20.
  • the armature 20 between the first flange 21 and the second flange 31 is held via the damping element 32.
  • annular groove 36 in the counterstop surface 35, the radius r of which corresponds approximately to the middle between the smallest circumferential radius r min and the largest circumferential radius r max of the counterstop surface 35.
  • an O-ring 37 is inserted, which projects beyond a supernatant u on the counter-stop surface 35.
  • FIG. 3 shows in an excerpted sectional view Another embodiment of the invention Fuel injection valve 1 corresponding to the area II of Fig. 1.
  • the structure corresponds to that in FIG. 2 shown with the valve needle 3, by the Weld 22 on this welded first flange 21, the armature 20, the fuel passage 30a running therein, the anchor stop surface 34 and the counter stop surface 35th
  • second flange 31 is over the Damping element 32 of the armature 20 between the first flange 21st and second flange 31 held.
  • a four-channel ring 38 is used, the one about a supernatant u on the counter stop surface 35th survives.
  • the invention is not limited to those shown Embodiments limited and z. B. also for outward opening fuel injectors 1 or others Anchor shapes suitable, as far as this a flat stop exhibit.

Claims (9)

  1. Injecteur de carburant (1), notamment pour des installations d'injection de carburant de moteurs à combustion interne, comprenant une aiguille d'injecteur (3) coopérant avec une surface de siège de soupape (6) pour former un siège d'étanchéité et un induit (20) agissant sur l'aiguille d'injecteur (3), l'induit ayant une surface de butée (34) à l'opposé du siège de soupape comme première surface de butée et une surface de butée complémentaire (35) formant une seconde surface de butée coopérant avec la surface de butée (34) de l'induit,
    caractérisé en ce que
    la surface de butée de l'induit (34) et/ou la surface de butée complémentaire (35) comporte dans une cavité (36) un élément d'amortissement élastique (37, 38) dépassant de la surface de butée d'induit (34) ou de la surface de butée complémentaire (35).
  2. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    l'élément d'amortissement (37, 38) est monté dans la surface de butée complémentaire (35).
  3. Injecteur de carburant selon l'une des revendications 1 ou 2,
    caractérisé en ce que
    la cavité est une rainure circulaire (36).
  4. Injecteur de carburant selon la revendication 3,
    caractérisé en ce que
    la rainure circulaire (36) est concentrique à l'aiguille d'injecteur (3).
  5. Injecteur de carburant selon la revendication 4,
    caractérisé en ce que
    la rainure circulaire (36) a un rayon (r) qui est sensiblement la moyenne entre le plus petit rayon périphérique (rmin) et le plus grand rayon périphérique (rmax) de la surface d'appui complémentaire (35).
  6. Injecteur de carburant selon la revendication 4 ou 5,
    caractérisé en ce que
    l'élément d'amortissement est une bague à quatre arêtes (38) en élastomère.
  7. Injecteur de carburant selon la revendication 4 ou 5,
    caractérisé en ce que
    l'élément d'amortissement est un joint torique (37) en élastomère.
  8. Injecteur de carburant selon la revendication 6 ou 7,
    caractérisé en ce que
    le module d'élasticité de l'élément d'amortissement (37, 38) est choisi pour que lorsque l'induit (20) est serré, l'élément d'amortissement (37, 38) soit enfoncé dans la rainure (36) et que la surface de butée (34) de l'induit et la surface de butée complémentaire (35) s'appliquent l'une contre l'autre.
  9. Injecteur de carburant selon la revendication 1 ou 2,
    caractérisé en ce que
    l'élément d'amortissement élastique (37, 38) est un élément à ressort.
EP02011017A 2001-05-21 2002-05-17 Injecteur de carburant Expired - Lifetime EP1262655B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10124747A DE10124747A1 (de) 2001-05-21 2001-05-21 Brennstoffeinspritzventil
DE10124747 2001-05-21

Publications (3)

Publication Number Publication Date
EP1262655A2 EP1262655A2 (fr) 2002-12-04
EP1262655A3 EP1262655A3 (fr) 2004-01-21
EP1262655B1 true EP1262655B1 (fr) 2005-03-30

Family

ID=7685601

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02011017A Expired - Lifetime EP1262655B1 (fr) 2001-05-21 2002-05-17 Injecteur de carburant

Country Status (3)

Country Link
EP (1) EP1262655B1 (fr)
JP (1) JP4327409B2 (fr)
DE (2) DE10124747A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106930881A (zh) * 2015-12-21 2017-07-07 罗伯特·博世有限公司 用于计量流体的阀

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10308914B4 (de) * 2003-02-28 2013-11-14 Robert Bosch Gmbh Brennstoffeinspritzventil
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
JP4790441B2 (ja) 2006-02-17 2011-10-12 日立オートモティブシステムズ株式会社 電磁燃料噴射弁及びその組立て方法
DE102006021736A1 (de) * 2006-05-10 2007-11-15 Robert Bosch Gmbh Kraftstoffinjektor mit druckausgeglichenem Steuerventil
DE102010064105A1 (de) * 2010-12-23 2012-01-19 Robert Bosch Gmbh Ventil zum Einspritzen von Kraftstoff
EP2860386A1 (fr) * 2013-10-10 2015-04-15 Continental Automotive GmbH Injecteur pour moteur à combustion
DE102015201005A1 (de) * 2015-01-22 2016-07-28 Robert Bosch Gmbh Brennstoffeinspritzventil
JP2018009548A (ja) * 2016-07-15 2018-01-18 株式会社デンソー 燃料噴射弁
EP3346122B1 (fr) * 2017-01-10 2019-07-17 Continental Automotive GmbH Soupape de commutation électromagnétique et pompe haute pression à carburant
DE102017218197A1 (de) * 2017-10-12 2019-04-18 Robert Bosch Gmbh Ventil zum Zumessen von Fluid, insbesondere Gasventil
DE102018200848A1 (de) * 2018-01-19 2019-07-25 Continental Automotive Gmbh Elektromagnetisches Schaltventil

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3314899A1 (de) * 1983-04-25 1984-10-25 Mesenich, Gerhard, Dipl.-Ing., 4630 Bochum Federanordnung mit zusatzmasse zur verbesserung des dynamischen verhaltens von elektromagnetsystemen
US4766405A (en) 1987-04-14 1988-08-23 Allied Corporation Dynamic energy absorber
DE19816315A1 (de) 1998-04-11 1999-10-14 Bosch Gmbh Robert Brennstoffeinspritzventil
DE19849210A1 (de) * 1998-10-26 2000-04-27 Bosch Gmbh Robert Brennstoffeinspritzventil
EP1054152A3 (fr) * 1999-05-19 2002-08-14 HydraForce, Inc. Soupape à commande électrique avec dispositif pour contrôler une force non-linéaire
DE19927900A1 (de) * 1999-06-18 2000-12-21 Bosch Gmbh Robert Brennstoffeinspritzventil
DE19935263A1 (de) * 1999-07-27 2001-02-01 Bosch Gmbh Robert Brennstoffeinspritzventil
DE19948238A1 (de) * 1999-10-07 2001-04-19 Bosch Gmbh Robert Brennstoffeinspritzventil
DE10017030B4 (de) * 2000-03-31 2005-05-19 Rausch & Pausch Gmbh Magnetventil

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106930881A (zh) * 2015-12-21 2017-07-07 罗伯特·博世有限公司 用于计量流体的阀

Also Published As

Publication number Publication date
EP1262655A2 (fr) 2002-12-04
JP2003021014A (ja) 2003-01-24
EP1262655A3 (fr) 2004-01-21
DE50202602D1 (de) 2005-05-04
JP4327409B2 (ja) 2009-09-09
DE10124747A1 (de) 2002-11-28

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