EP2864623A1 - Injecteur - Google Patents

Injecteur

Info

Publication number
EP2864623A1
EP2864623A1 EP13719487.4A EP13719487A EP2864623A1 EP 2864623 A1 EP2864623 A1 EP 2864623A1 EP 13719487 A EP13719487 A EP 13719487A EP 2864623 A1 EP2864623 A1 EP 2864623A1
Authority
EP
European Patent Office
Prior art keywords
armature assembly
valve element
injection valve
shaped body
cup
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
EP13719487.4A
Other languages
German (de)
English (en)
Other versions
EP2864623B1 (fr
Inventor
Olaf SCHOENROCK
Anselm Berg
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 EP2864623A1 publication Critical patent/EP2864623A1/fr
Application granted granted Critical
Publication of EP2864623B1 publication Critical patent/EP2864623B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • 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
    • F02M61/20—Closing valves mechanically, e.g. arrangements of springs or weights or permanent magnets; Damping of valve lift
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
    • F02M63/0075—Stop members in valves, e.g. plates or disks limiting the movement of armature, valve or spring
    • 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
    • F02M2200/304—Fuel-injection apparatus having mechanical parts, the movement of which is damped using hydraulic means

Definitions

  • the present invention relates to an injection valve, in particular for
  • Valve needle separated from the armature and connected by a spring, so that a two-mass system is formed. As a result, the valve needle has a so-called anchor free travel with respect to the armature.
  • Magnetic armature and valve needle leads to a reduction of the bounce when
  • the injector according to the invention with the features of claim 1 shows a novel way of connecting the valve element with an armature assembly, further wherein a relative movement between the
  • Valve element and the armature assembly is possible, so that a
  • valve element and the armature assembly are inserted into one another, wherein the relative movement between the armature assembly and the valve element is limited by means of a pin.
  • This arrangement according to the invention also makes possible, in particular, the advantageous embodiment of a damping chamber and / or the arrangement of a compression spring.
  • the inventive design of the injection valve thus reduces the bounce of the valve element, especially during Close the spray opening.
  • Injection valve comprising a housing with at least one injection opening and a housing in the housing along a longitudinal axis movable armature assembly.
  • the armature assembly is moved by means of a solenoid energized.
  • a valve element which is linearly movable relative to the armature assembly and relative to the housing is provided in the housing for opening and closing the at least one injection opening.
  • a pin is arranged in the housing.
  • the at least one pin perpendicular to
  • the pin can either be stuck with the
  • Anchor assembly or firmly connected to the valve element.
  • the valve element is in the armature assembly.
  • the pin is firmly connected to the armature assembly and extends one
  • Valve member This recess in the valve element is in the direction of
  • armature assembly Within the armature assembly is preferably a damping chamber for
  • the anchor assembly comprises a cup-shaped body.
  • the cup-shaped body is formed by a bottom which is perpendicular to the longitudinal axis and a circumferential side wall.
  • the cup-shaped body opens to the combustion chamber facing side or to the injection opening.
  • the valve element is guided linearly movable in the cup-shaped body. Between the bottom of the cup-shaped body and the valve element in particular the damping space is formed. To adjust the damping effect at least one outflow is preferably provided in the bottom of the cup-shaped body for the fluid to be injected.
  • a compression spring is preferably arranged, which is supported with one end against the armature assembly and with the other end against the valve element. This compression spring pushes the valve element in
  • Valve element and the bottom of the cup-shaped body arranged.
  • the armature assembly preferably has a hollow needle as a central component. Through this hollow needle, the fluid to be injected flows. At least one flow-through opening for the fluid is particularly preferred on the hollow needle
  • a magnet armature is mounted, which cooperates magnetically with an inner pole or with the magnetic coil.
  • a magnet armature is mounted, which cooperates magnetically with an inner pole or with the magnetic coil.
  • At the other end of the hollow needle of the cup-shaped body is used and in particular cohesively, for example by means of a welded connection, connected to the hollow needle.
  • a shoulder is provided in the cup-shaped body. This paragraph represents a surface facing the combustion chamber. This surface facing the combustion chamber faces a surface of the valve element facing away from the combustion chamber. Between these two surfaces thus a squish gap is formed.
  • Valve element reduces this nip. By appropriate dimensioning of the nip the damping effect is adjustable.
  • the pot-shaped body is manufactured in particular as a deep-drawn part. Alternatively, e.g. a production provided as a turned part.
  • the valve element preferably comprises a small valve needle, which is fixedly connected to a sealing element, in particular a ball.
  • FIG. 1 shows a half section of an injection valve according to the invention according to a first embodiment
  • FIG. 2 is a detail in half section of the invention
  • Figure 1 shows, in half section and schematically simplified, an injection valve 1 according to the first embodiment.
  • the injection valve 1 comprises a housing 2, which is shown only schematically, with at least one injection opening 3.
  • the side of the injection valve 1 with the injection opening 3 is referred to as the combustion chamber-facing side 4.
  • the other side of the injection valve 1 is referred to as side facing away from combustion chamber 5.
  • the injection valve 1 extends along a longitudinal axis 6.
  • a valve element 7 is arranged to be linearly movable within the housing 2.
  • the valve element 7 comprises a short valve needle 8, which is fixedly connected to a valve ball 9.
  • a recess 10 formed as a bore perpendicular to the longitudinal axis 6, is arranged.
  • armature assembly 11 located in the housing 2 along the longitudinal axis 6 linearly movable armature assembly 11.
  • the armature assembly 11 is by means of
  • the Magnetic coil 26 movable. Furthermore, the armature assembly 11 is loaded by means of a closing pressure spring 12 in the closing direction or toward the side 4 facing the combustion chamber.
  • the armature assembly 1 1 comprises a hollow needle 13 with at least one flow opening 14 for the fuel.
  • a magnet armature 15 is mounted on the hollow needle 13.
  • a pot-shaped body 16 in the hollow needle thirteenth The cup-shaped body 16 is fixedly connected to the hollow needle 13, in particular welded.
  • the cup-shaped body 16 comprises a bottom 17, which is perpendicular to the longitudinal axis 6. At the bottom 17 is a cylindrical closes
  • the cup-shaped body 16 opens to the side facing the combustion chamber 4.
  • the valve element 7, in particular the short valve needle stuck 8. Fixed to the side wall 18, a pin 19 is connected.
  • the pin 19 extends perpendicular to the longitudinal axis 6 in the recess 10 in the short valve needle 8. By means of this pin 19 is a movement of the valve element
  • a compression spring 20 is arranged. Furthermore, the space between the combustion chamber facing away serves
  • At least one outflow bore 22 in the bottom 17 is provided.
  • the discharge bore 22 is dimensioned according to the desired damping effect.
  • FIG. 1 shows a detail of the injection valve 1 according to the second
  • the cup-shaped body comprises on its side wall 18 in the second embodiment, a shoulder 24.
  • Paragraph 24 forms an annular, combustion chamber facing surface. Between this annular surface and the combustion chamber facing away from the surface
  • Valve needle 8 is a nip 25 is formed. Also via this nip 25, the damping effect of the damping chamber 21 can be regulated. In the second embodiment, both by means of the nip 25 and by means of the dimensioning of the damping chamber 21 with the
  • Valve element 7 is pressed, so that the valve ball 9, the injection port 3 seals.
  • the armature assembly 11 in the opening direction, in particular in the direction of an inner pole, not shown, accelerated until the pin 16 on a wall of the recess 10 strikes in the valve needle 8 and the pulse on the
  • Valve element 7 is transmitted.
  • Quetschspaltes 25 and the dimensioning of the entire damping chamber 21 define the damping, which experience the valve needle 7 and the armature assembly 1 1.

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)
  • Fuel-Injection Apparatus (AREA)

Abstract

L'invention concerne un injecteur (1) notamment destiné à injecter du carburant dans une chambre de combustion, comprenant un boîtier (2) présentant au moins une ouverture d'injection (3), un module d'induit (11) mobile linéairement dans le boîtier (2) le long d'un axe longitudinal (6), une bobine magnétique (26) agissant magnétiquement sur le module d'induit (11), un élément soupape (7) mobile linéairement par rapport au module d'induit (11) et par rapport au boîtier (2), destiné à ouvrir et fermer l'ouverture d'injection (3), et une tige (19) pour limiter le mouvement de l'élément soupape (7) par rapport au module d'induit (11).
EP13719487.4A 2012-06-20 2013-04-24 Injecteur Active EP2864623B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012210424A DE102012210424A1 (de) 2012-06-20 2012-06-20 Einspritzventil
PCT/EP2013/058488 WO2013189639A1 (fr) 2012-06-20 2013-04-24 Injecteur

Publications (2)

Publication Number Publication Date
EP2864623A1 true EP2864623A1 (fr) 2015-04-29
EP2864623B1 EP2864623B1 (fr) 2019-06-19

Family

ID=48227236

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13719487.4A Active EP2864623B1 (fr) 2012-06-20 2013-04-24 Injecteur

Country Status (5)

Country Link
US (1) US9394869B2 (fr)
EP (1) EP2864623B1 (fr)
JP (1) JP6028095B2 (fr)
DE (1) DE102012210424A1 (fr)
WO (1) WO2013189639A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2947306A1 (fr) * 2014-05-22 2015-11-25 Continental Automotive GmbH Injecteur pour injection de fluides
DE102015209505A1 (de) * 2015-05-22 2016-11-24 Robert Bosch Gmbh Kraftstoffinjektor
DE102020212935A1 (de) * 2020-10-14 2022-04-14 Robert Bosch Gesellschaft mit beschränkter Haftung Gasdosierventil

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2575272A (en) * 1947-07-17 1951-11-13 Skinner Chuck Company Rapid closure valve for high-flow rates at low-pressure drop
US3632081A (en) * 1970-04-10 1972-01-04 Nasa Solenoid valve including guide for armature and valve member
CH671080A5 (fr) * 1986-10-01 1989-07-31 Sulzer Ag
US5048790A (en) * 1990-07-18 1991-09-17 Target Rock Corporation Self-modulating control valve for high-pressure fluid flow
US5172887A (en) * 1991-06-24 1992-12-22 Lucas Industries Public Limited Company Fluid control valve
JPH08210546A (ja) * 1995-02-07 1996-08-20 Aisan Ind Co Ltd 車両用パイロット式制御弁
JP2685732B2 (ja) * 1995-03-29 1997-12-03 シーケーディ株式会社 パイロットキック式電磁弁
JP3921717B2 (ja) * 1996-11-25 2007-05-30 トヨタ自動車株式会社 燃料供給制御装置
DE10039077A1 (de) * 2000-08-10 2002-02-21 Bosch Gmbh Robert Brennstoffeinspritzventil
DE10065528A1 (de) * 2000-12-28 2002-07-04 Bosch Gmbh Robert Brennstoffeinspritzventil
JP2004162813A (ja) * 2002-11-13 2004-06-10 Ckd Corp 高圧電磁弁
DE60328355D1 (de) * 2003-03-19 2009-08-27 Continental Automotive Gmbh Einspritzventil mit einer durch eine Feder vorgespannten Nadel
JP4330943B2 (ja) * 2003-06-30 2009-09-16 株式会社ジェイテクト 水素ガス用高圧バルブ及び水素ガス用減圧装置
ATE335925T1 (de) * 2004-02-20 2006-09-15 Delphi Tech Inc Einspritzdüse
JP4268604B2 (ja) * 2005-08-04 2009-05-27 愛三工業株式会社 電磁弁
JP4820470B2 (ja) * 2006-08-22 2011-11-24 株式会社日本自動車部品総合研究所 内燃機関の燃料噴射制御装置
JP2009079485A (ja) * 2007-09-25 2009-04-16 Toyota Motor Corp 燃料噴射弁
JP2010180767A (ja) * 2009-02-05 2010-08-19 Denso Corp 燃料噴射ノズル
JP2010223166A (ja) * 2009-03-25 2010-10-07 Nippon Soken Inc 内燃機関の燃料噴射制御装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2013189639A1 *

Also Published As

Publication number Publication date
JP6028095B2 (ja) 2016-11-16
WO2013189639A1 (fr) 2013-12-27
JP2015519512A (ja) 2015-07-09
DE102012210424A1 (de) 2013-12-24
US20150176553A1 (en) 2015-06-25
US9394869B2 (en) 2016-07-19
EP2864623B1 (fr) 2019-06-19

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