EP2871352A1 - Vanne pour le dosage de fluide - Google Patents

Vanne pour le dosage de fluide Download PDF

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Publication number
EP2871352A1
EP2871352A1 EP20140183692 EP14183692A EP2871352A1 EP 2871352 A1 EP2871352 A1 EP 2871352A1 EP 20140183692 EP20140183692 EP 20140183692 EP 14183692 A EP14183692 A EP 14183692A EP 2871352 A1 EP2871352 A1 EP 2871352A1
Authority
EP
European Patent Office
Prior art keywords
valve
valve needle
armature
anchor
ring
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
EP20140183692
Other languages
German (de)
English (en)
Other versions
EP2871352B1 (fr
Inventor
Ralf Kromer
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 EP2871352A1 publication Critical patent/EP2871352A1/fr
Application granted granted Critical
Publication of EP2871352B1 publication Critical patent/EP2871352B1/fr
Not-in-force 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
    • 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
    • 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
    • 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
    • F02M51/0675—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 valve body having cylindrical guiding or metering portions, e.g. with fuel passages
    • 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

Definitions

  • the invention is based on a valve for metering fluid according to the preamble of claim 1, wherein the standing for a flowing or flowing medium, superordinate term fluid is used in accordance with the fluid dynamics for gases and liquids.
  • a known fuel injection valve ( DE 101 08 945 A1 ) has a sleeve-shaped nozzle body which is closed by a valve seat body with an injection opening enclosed by a valve seat.
  • a hollow valve needle is arranged axially displaceably, which carries a guided in the valve seat body, with the valve seat forming a sealing seat closing head.
  • the valve needle is actuated by an electromagnet against the closing force of a valve closing spring acting on the valve needle.
  • the electromagnet has a cup-shaped outer pole, a hollow-cylindrical inner pole and an armature which delimits a working air gap with the annular end face of the inner pole and which sits axially displaceably on the valve needle.
  • the injection valve has an apparatus for generating an Ankervorhubs, which is arranged at the Schellerkopffernen end of the valve needle Mitauerflansch, on the side facing away from the driver flange side of the armature on the valve needle fixed anchor stop and a Vorhubfeder has.
  • the Vorhubfeder sits inside the inner pole on an annular recess in Mitauerflansch and is supported on the one hand on Mit constitutionalflansch and on the other hand, at the anchor.
  • the closing head is pressed onto the valve seat by the valve closing spring via the valve needle.
  • the anchor is, acted upon by the Vorhubfeder, on the anchor stop.
  • the armature Upon energization of the electromagnet, the armature is moved against the spring force of the return spring and the Vorhubfeder in the stroke direction by the magnetic spring.
  • the stroke of the armature is divided into a forward stroke or armature free travel, which serves to close a Vorhubspalts, and an opening stroke. After closing the Vorhubspalts the anchor takes over the Mitauerflansch with the valve needle, and with the onset of the opening stroke lifts the closing head from the valve seat.
  • the metering valve according to the invention with the features of claim 1 has the advantage that the valve can be built much shorter by the displacement of the Vorhubfeder in the region of the armature.
  • a structurally conditioned short guide area of the armature on the valve needle, connected to the indirect, radial support of the valve needle via the armature, can lead to undesirable tilting of the armature on the valve needle and thus to tilting of the inner pole facing end face of the armature Working air gap limited, lead.
  • This is counteracted according to the invention by the bipartite of the armature.
  • the armature guide disc firmly connected to the valve needle is guided axially on the outside and limits the working air gap. For a tilting of the inner pole-side anchor surface is excluded.
  • the Ankerokweg or Vorhubspalt for Ankervorhub is moved between armature guide disc and the displaceable relative to the valve needle on the valve needle anchor ring, which covers the Vorhubfeder in a longer ring section and is guided with a shorter ring portion on the valve needle.
  • the leadership of the armature guide disc in the non-magnetic Tenn Scheme between the outer and inner pole prevents unwanted, direct magnetic flux between armature guide disc and outer pole.
  • a plurality of angularly offset guide surfaces are formed on the circumference of the armature guide disk.
  • non-magnetic guide bushing in the first ring portion of the anchor ring between the anchor ring and the valve needle fixedly connected to the anchor ring.
  • the non-magnetic guide bushing in a valve needle made of a magnetic material for a magnetic separation between the valve needle and anchor ring.
  • the guide bushing can be replaced by a guide collar formed integrally with the first ring section of the anchor ring and projecting beyond the inner wall of the second ring section.
  • valve for metering fluid is preferred as an injection valve for injecting fuel in one
  • Fuel injection system used by internal combustion engines can also be used in gas engines or in heating systems for the metered metering of fluid fuel or as a metering valve for injecting a reducing agent into the exhaust gas tract of an internal combustion engine for the purpose of reducing nitrogen oxides.
  • the valve has a valve seat body 11 with a valve seat 12 enclosed by a metering opening 13, a means of a closing head 15 the metering opening 13 controlling valve needle 14, which is guided over the closing head 15 in the valve seat body 11, a valve needle 14 acting on the valve closing spring 16, the closing the metering opening 13 presses the closing head 15 onto the valve seat 12, and a solenoid valve 17 actuating the valve needle 14 against the closing or spring force of the valve closing spring 16.
  • the electromagnet 17 has in a known manner an inner pole 18, an outer pole 19 with an amagnetic separation region 20 to the inner pole 18 and a seated on the valve needle 14, with the inner pole 18 a working air gap 21 of the electromagnet 17 limiting armature 22.
  • a magnetic coil 26 consisting of a voltage applied to the separator ring 25 coil carrier 27 and wound on the bobbin 27 exciter winding 28, was added.
  • a magnetic yoke 29 is produced from the magnet housing 23 to the magnet core 24.
  • the excitation winding 28 of the magnetic coil 26 is connected via contact strips 30 with an electrical connector 31.
  • a hollow cylindrical connecting piece 32 is stumped coaxially, in which a fluid inlet 33 is formed.
  • the connecting piece 32, a part of the magnetic core 24 and the electrical connector 31 are integrated into a plastic casing 34, which partially overlaps the magnet housing 23 axially.
  • the magnet housing 23 is provided with a stepped pot bottom, and a valve sleeve 35 connects the valve seat body 11 with the smallest in diameter portion of the pot bottom.
  • the coaxial in the valve sleeve 35 extending, hollow cylindrical valve needle 14 protrudes into the hollow cylindrical magnetic core 24 and is open at the front.
  • the valve needle 14 is preceded by a filter 36.
  • the flowing via the fluid inlet 33 into the valve fluid enters radially into the filter 36 and axially from the filter 36 and flows through the hollow valve needle 14 and radial holes 37 of the valve needle 14 in the region of the valve sleeve 35 to the orifice 13, so that the Closing head 15 is acted upon by the pressurized fluid.
  • the valve closing spring 16 is arranged in the interior of the hollow cylindrical magnetic core 24, is seated on the valve needle 14 and axially supported on the one hand on the valve needle 14 and on the other hand on the firmly pressed into the magnetic core 24 filter 36 from which at the same time an adjusting element for adjusting the closing force of the valve closing spring 16 forms.
  • a device for generating an Ankervorhubs or an armature free travel comprises a fixed to the valve needle 14 anchor stopper 38 and an armature 22 in the direction of anchor stop 38 acting on Vorhubfeder 39, which is arranged to shorten the axial length of the valve within the armature 22 on the valve needle 14.
  • the in FIG. 2 in enlarged sectional view and in FIG. 3 In an enlarged lower view to be seen anchor 22 axially divided into an armature guide disc 221 and an anchor ring 222.
  • the armature guide disc 221 is fixedly connected to the valve needle 14 and limited with its inner pole side annular surface the working air gap 21 of the electromagnet 17.
  • the armature guide disc 221 is axially displaceable in the non-magnetic separation region 20 of the outer pole 19, ie in the separator ring 25, and has this on the outer circumference a plurality of angular offset Guide surfaces 221 a on ( FIG. 3 ).
  • the armature ring 222 is seated axially displaceable on the valve needle 14 between the armature guide disc 221 and armature stop 38.
  • the Ankerokke or -vorhub 41 forming displacement on the valve needle 14 is limited on the one hand by the armature stopper 38 and on the other hand by the armature guide disc 221.
  • the armature ring 222 is positioned so that a radial magnetic flux between the outer pole 19 and the magnet housing 23 and the anchor ring 222 is ensured.
  • the outer diameter of the anchor ring 222 is selected so that its Displacement of a mechanical contact with the outer pole 19 or magnet housing 23 is excluded.
  • the anchor ring 222 has an axially shorter first ring portion 222a with a smaller inner diameter and an axially longer second ring portion 222b with a larger inner diameter.
  • a one-piece guide collar radially projecting beyond the inner wall of the second annular section 222b is present on the first annular section 222a.
  • This in FIG. 2 for a later described modification of the armature 22 shown and designated 40 component represents in this context this guide collar, which in the rest in FIG. 1 can be seen as an integral part of the anchor ring 22.
  • the second ring portion 222b encloses due to its larger inner diameter which sits on the valve needle 14 Vorhubfeder 39 with a radial distance.
  • the Vorhubfeder 39 is supported on the one hand on the armature guide plate 221, and thus on the valve needle 14, and on the other hand on the anchor ring 222, wherein the ankerring workede support on the guide collar, on its annular end face made.
  • the valve needle 14 is preferably non-magnetic, so it consists of a magnetically not or only poorly conductive material. If the valve needle 14 is magnetic, that is, if it consists of a magnetically highly conductive material, a needle section is formed in the valve needle 14 in an amagnetic manner, which extends over the first ring section 222a. This non-magnetic needle section provides a magnetic separation between anchor ring 222 and valve needle 14.
  • the magnetic separation of valve needle 14 and armature 22 can be laid in the anchor ring 222.
  • the seated on the valve needle 14 guide collar of the first ring portion 222a has a large magnetic resistance.
  • the guide collar is replaced by a separate guide bush 40 made of a magnetically non or poorly conductive material, which is firmly connected to the anchor ring 222.
  • the inner diameter of the first ring portion 222a is the same the inner diameter of the second ring portion 222 b made and the guide sleeve 40 between the first ring portion 222 a and the valve needle 14 is arranged.
  • the guide sleeve 40 assumes the leadership of the anchor ring 222 on the valve needle 14 and with its annular end face the ankerring workede support the Vorhubfeder 39th
  • the armature guide plate 221 remains in the position described by the pressure force of the valve closing spring 16.
  • the armature ring 222 is accelerated by the magnetic force in the direction of armature guide plate 221.
  • Anchor ring 222, armature guide disc 221 and valve needle 14 move together until the armature guide disc 221 reaches the inner pole 18 or magnetic core 24. The valve is fully open.
  • valve closing spring 16 pushes the valve needle 14 back with armature 22 until the closing head 15 presses on the valve seat 12 and the metering opening 13 closes.
  • the Vorhubfeder 39 presses the anchor ring 222 against the anchor stop 38 and is between the anchor ring 222 and armature guide plate 221, the gap for the Ankerokweg or -vorhub 41 again.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Magnetically Actuated Valves (AREA)
EP14183692.4A 2013-11-07 2014-09-05 Vanne pour le dosage de fluide Not-in-force EP2871352B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102013222590.3A DE102013222590A1 (de) 2013-11-07 2013-11-07 Ventil zum Zumessen von Fluid

Publications (2)

Publication Number Publication Date
EP2871352A1 true EP2871352A1 (fr) 2015-05-13
EP2871352B1 EP2871352B1 (fr) 2017-08-02

Family

ID=51492194

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14183692.4A Not-in-force EP2871352B1 (fr) 2013-11-07 2014-09-05 Vanne pour le dosage de fluide

Country Status (2)

Country Link
EP (1) EP2871352B1 (fr)
DE (1) DE102013222590A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114198509A (zh) * 2021-11-19 2022-03-18 宜兴利合机械科技有限公司 一种快速通断的电控阀门
CN117262297A (zh) * 2023-11-22 2023-12-22 山东东源新材料科技有限公司 一种脱硫脱硝催化剂分装装置及分装方法
WO2024115328A1 (fr) * 2022-11-28 2024-06-06 Liebherr-Components Deggendorf Gmbh Injecteur pour l'injection de carburant

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001057392A1 (fr) * 2000-02-04 2001-08-09 Robert Bosch Gmbh Soupape d'injection de carburant et son procede de commande
DE10108945A1 (de) 2001-02-24 2002-09-05 Bosch Gmbh Robert Brennstoffeinspritzventil
EP1801409A1 (fr) * 2005-12-23 2007-06-27 Delphi Technologies, Inc. Injecteur de carburant
EP2236807A1 (fr) * 2009-03-23 2010-10-06 Continental Automotive GmbH Injecteur de fluide
JP2011208603A (ja) * 2010-03-30 2011-10-20 Denso Corp 燃料噴射弁
EP2444651A1 (fr) * 2010-10-19 2012-04-25 Continental Automotive GmbH Ensemble de soupape pour soupape d'injection et soupape d'injection

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001057392A1 (fr) * 2000-02-04 2001-08-09 Robert Bosch Gmbh Soupape d'injection de carburant et son procede de commande
DE10108945A1 (de) 2001-02-24 2002-09-05 Bosch Gmbh Robert Brennstoffeinspritzventil
EP1801409A1 (fr) * 2005-12-23 2007-06-27 Delphi Technologies, Inc. Injecteur de carburant
EP2236807A1 (fr) * 2009-03-23 2010-10-06 Continental Automotive GmbH Injecteur de fluide
JP2011208603A (ja) * 2010-03-30 2011-10-20 Denso Corp 燃料噴射弁
EP2444651A1 (fr) * 2010-10-19 2012-04-25 Continental Automotive GmbH Ensemble de soupape pour soupape d'injection et soupape d'injection

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114198509A (zh) * 2021-11-19 2022-03-18 宜兴利合机械科技有限公司 一种快速通断的电控阀门
WO2024115328A1 (fr) * 2022-11-28 2024-06-06 Liebherr-Components Deggendorf Gmbh Injecteur pour l'injection de carburant
CN117262297A (zh) * 2023-11-22 2023-12-22 山东东源新材料科技有限公司 一种脱硫脱硝催化剂分装装置及分装方法
CN117262297B (zh) * 2023-11-22 2024-01-30 山东东源新材料科技有限公司 一种脱硫脱硝催化剂分装装置及分装方法

Also Published As

Publication number Publication date
EP2871352B1 (fr) 2017-08-02
DE102013222590A1 (de) 2015-05-21

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