EP0796393B1 - Elektromagnetisch betätigbares ventil, insbesondere brennstoffeinspritzventil - Google Patents

Elektromagnetisch betätigbares ventil, insbesondere brennstoffeinspritzventil Download PDF

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Publication number
EP0796393B1
EP0796393B1 EP96920711A EP96920711A EP0796393B1 EP 0796393 B1 EP0796393 B1 EP 0796393B1 EP 96920711 A EP96920711 A EP 96920711A EP 96920711 A EP96920711 A EP 96920711A EP 0796393 B1 EP0796393 B1 EP 0796393B1
Authority
EP
European Patent Office
Prior art keywords
valve
stop element
valve member
valve according
core
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
EP96920711A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0796393A1 (de
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 EP0796393A1 publication Critical patent/EP0796393A1/de
Application granted granted Critical
Publication of EP0796393B1 publication Critical patent/EP0796393B1/de
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
    • F02M51/0632—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a spherically or partly spherically shaped armature, e.g. acting as valve body
    • 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
    • F02M51/08—Injectors peculiar thereto with means directly operating the valve needle specially for low-pressure fuel-injection
    • 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
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F02M61/1853—Orifice plates
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S239/00—Fluid sprinkling, spraying, and diffusing
    • Y10S239/90—Electromagnetically actuated fuel injector having ball and seat type valve

Definitions

  • the electromagnetically actuated valve according to the invention in particular fuel injector, with the characteristic features of the main claim has the Advantage that a simple and inexpensive way high effectiveness of the magnetic circuit is achieved because the Losses of the magnetic field due to simple constructive Measures can be kept very low.
  • a spherical valve member surrounding soft magnetic guide body ensures his partially dome-shaped training in the area of a inner guide opening both for good guidance of the Valve member as well as for an optimal transition of Magnetic field lines on the valve member, as one between the two formed radial air gap can be kept to a minimum.
  • a between a core serving as an inner pole and the spherical valve member is arranged stop element very easy to form as a separate insert, easily one Undergo surface treatment (e.g. coating) and also easy to assemble. It is an advantage that Execute stop element disc-shaped and by means of a To let compression spring press against the core, the Guidance of the stop element by a non-magnetic Intermediate part is done.
  • a particular advantage is the stop element run as a large-pored sintered body.
  • the stop element is then sintered from balls Have diameters in the tenths of a millimeter range. A fluid can still be between the sintered balls flow well so that no additional flow channels required are.
  • the stop element works at the same time as a filter, the coarse dirt from the seating area keeps away.
  • the solenoid 1 is with its bobbin 6 in the stepped magnet housing 3 embedded in some way, i.e. it is from the magnet housing 3 in the circumferential direction completely and at least partially surrounded below.
  • the cover element covers the magnetic coil 1 upwards and serves to close the magnetic circuit.
  • the cover element thus connects the core 5 with the Magnet housing 3 above the magnet coil 1.
  • a step 7 in the magnet housing 3 immediately below the coil body 6 results in a seen in the downstream direction Reducing the diameter of the magnet housing 3, the its downstream end region 9 also as Valve seat carrier acts.
  • the bobbin 6 is to Example on level 7 of the magnet housing 3.
  • the tubular magnet housing 3 extends concentric to a longitudinal valve axis 10.
  • a longitudinal bore 12 which also is formed concentrically with the valve longitudinal axis 10.
  • a spherical valve member 13 arranged that both armature and valve closing body represents the injector.
  • With a lower core end 14 of the core 5 is tightly a tubular, metallic, non-magnetic intermediate part 15, for example by soldering connected and partially axially surrounds the core end 14. Because of a tight and firm connection of the intermediate part 15 with the magnet housing 3 also the tightness between the core 5 and magnet housing 3 is guaranteed, the Solenoid 1 dry before.
  • the coil former 6 lies there e.g. on an upper end face 16 of the intermediate part 15.
  • the cup-shaped spray perforated disk 27 has in addition to one Bottom part 28 to which the valve seat body 20 is attached and in which at least one, for example four, is passed through Eroding or stamping shaped injection openings 29 run, a revolving downstream Holding edge 30.
  • the insertion depth of the valve seat body 20 with the pot-shaped spray plate 27 or the Arrangement of a disk-shaped stop element 33 upstream of the valve member 13 determine the size of the Strokes of the valve member 13.
  • the stop element 33 lies with an upper end face 40 at the core end 14 of the core 5.
  • the end face is 40 processed, for example, so that the stop element 33rd only touches the core 5 and not the intermediate part 15. To achieve this, for example, is on the outside
  • the circumference of the stop element 33 has a circumferential bevel 41 provided. In the circumferential direction, the stop element 33 otherwise guided by the intermediate part 15. While the top End face 40 of stop element 33 is flat, is the opposite, the valve member 13 facing lower stop surface 43 dome-shaped to the Magnetic circuit through small air gaps as effectively as possible do. Different ways of training the Dome geometry on the stop element 33 is shown in FIG. 3 to 5, which will be explained in more detail later.
  • the dome-shaped stop surface 43 is interrupted by at least one, for example four radially and at the same time also downstream fluid passages, in particular Fuel passages 44.
  • the at least one Fuel passage 44 is groove-shaped in the stop element 33 introduced.
  • the stop element 33 has a stepped outer contour, with an upper area having a larger outside diameter as one including the fuel passages 44 lower area. This results in a paragraph 46 am Stop element 33 against which a compression spring 47 presses. While the compression spring 47 abutting the stop element 33 the stop element 33 against the core end 14 of the core 5 presses, it supports itself with its opposite side on the guide body 25, which in turn on the Valve seat body 20 rests.
  • the stop element 33 is made made of soft magnetic material and is at least on the lower dome-shaped stop surface 43 for the sake of Wear protection surface treated, e.g. chrome-plated.
  • the spherical valve member 13 has a spherical equator 48, which lies in a spherical plane, the sphere in two divides equally large spherical halves.
  • this Ball equator 48 extends the disc-shaped Guide body 25, which has a guide opening 49, through which the valve member 13 moves.
  • the guide body 25 is made of a soft magnetic material and at least from the axial height of the spherical equator 48 at am Valve seat 21 adjoining valve member 13 in downstream direction according to the contour of the Valve member 13 formed dome-shaped.
  • the magnetic flux goes over the magnet housing 3, the guide body 25, the Valve member 13 and the stop element 33 to the core 5.
  • the guide body 25 By the dome-shaped design of the guide opening 49 on Guide body 25, the magnetic flux with minimal Exceed radial air gap on valve member 13.
  • the upper Part of the guide opening 49 is cylindrical, for example executed.
  • the guide body 25 can also be rotated through 180 ° be installed so that the dome-shaped Section of the guide opening 49 above the spherical equator 48 lies.
  • For supplying fluid in the direction of the valve seat 21 can axially extending, groove-like depressions on the Guide opening 49 of the guide body 25 may be provided.
  • the guide body 25 is, for example, by stamping, sintering or MIM technology (metal injection molding).
  • the stop element 33 can also be embossed, sintered or MIM technology. Alternatively, it can Stop element 33 be sintered from balls, the Have diameters in the tenths of a millimeter range. At such a coarse-pored sintered body are then Fluid passages, in particular fuel passages 44, are not more necessary because between the sintered together Balls of fuel can flow through. Through the large-pored surface of the stop element 33 can be a hydraulic gluing can be effectively prevented.
  • the Stop element 33 also acts as a filter, the dirt from Keeps the seating area away.
  • a retaining ring 52 made of sheet metal.
  • This circulating, in Profile hook-shaped retaining ring 52 has three or four Set the circumference flaps 53, which at the Dismantling the injector and wiping the retaining ring Prevent by self-locking.
  • level 7 of Magnet housing 3 and the retaining ring 52 is on the outer circumference of the magnet housing 3 an annular groove is formed in the Sealing ring 55 is arranged.

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)
  • Magnetically Actuated Valves (AREA)
  • Catching Or Destruction (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
EP96920711A 1995-10-07 1996-06-27 Elektromagnetisch betätigbares ventil, insbesondere brennstoffeinspritzventil Expired - Lifetime EP0796393B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19537382 1995-10-07
DE19537382A DE19537382A1 (de) 1995-10-07 1995-10-07 Elektromagnetisch betätigbares Ventil, insbesondere Brennstoffeinspritzventil
PCT/DE1996/001136 WO1997013977A1 (de) 1995-10-07 1996-06-27 Elektromagnetisch betätigbares ventil, insbesondere brennstoffeinspritzventil

Publications (2)

Publication Number Publication Date
EP0796393A1 EP0796393A1 (de) 1997-09-24
EP0796393B1 true EP0796393B1 (de) 2001-06-13

Family

ID=7774265

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96920711A Expired - Lifetime EP0796393B1 (de) 1995-10-07 1996-06-27 Elektromagnetisch betätigbares ventil, insbesondere brennstoffeinspritzventil

Country Status (9)

Country Link
US (1) US5820032A (zh)
EP (1) EP0796393B1 (zh)
JP (1) JP3737119B2 (zh)
KR (1) KR100420746B1 (zh)
CN (1) CN1067463C (zh)
BR (1) BR9606667A (zh)
DE (2) DE19537382A1 (zh)
RU (1) RU2160378C2 (zh)
WO (1) WO1997013977A1 (zh)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19705431A1 (de) * 1997-02-13 1998-08-20 Bosch Gmbh Robert Rückhaltesystem
DE19712589C1 (de) * 1997-03-26 1998-06-04 Bosch Gmbh Robert Brennstoffeinspritzventil und Verfahren zur Herstellung einer Ventilnadel eines Brennstoffeinspritzventils
DE19712591A1 (de) * 1997-03-26 1998-10-01 Bosch Gmbh Robert Brennstoffeinspritzventil und Verfahren zur Herstellung sowie Verwendung eines Brennstoffeinspritzventils
DE19744739A1 (de) 1997-10-10 1999-04-15 Bosch Gmbh Robert Brennstoffeinspritzventil
DE19757117A1 (de) 1997-12-20 1999-06-24 Bosch Gmbh Robert Verfahren zur Herstellung eines Ventilsitzkörpers für ein Brennstoffeinspritzventil und Brennstoffeinspritzventil
DE19810330A1 (de) * 1998-03-11 1999-09-16 Mannesmann Rexroth Ag Magnetventil
DE19856920A1 (de) * 1998-12-10 2000-06-15 Bosch Gmbh Robert Brennstoffeinspritzventil
US6142394A (en) * 1999-06-30 2000-11-07 Caterpillar Inc. Valve seat for a ball and pin valve member in a hydraulically actuated fuel injector
JP2001082283A (ja) * 1999-09-20 2001-03-27 Hitachi Ltd 電磁式燃料噴射弁
US6554591B1 (en) * 2001-11-26 2003-04-29 Motorola, Inc. Micropump including ball check valve utilizing ceramic technology and method of fabrication
US6924965B2 (en) * 2001-12-29 2005-08-02 Magnasource, Llc Electro magnetically-operated device, and a method of operating the same
DE10351207A1 (de) * 2003-11-03 2005-06-02 Robert Bosch Gmbh Ventil zum Steuern eines Fluids
DE102005006228A1 (de) * 2005-02-10 2006-08-17 Continental Teves Ag & Co. Ohg Elektromagnetventil
DE102005061409A1 (de) 2005-12-22 2007-06-28 Robert Bosch Gmbh Elektromagnetisch betätigbares Ventil
DE102007061862A1 (de) * 2007-12-19 2009-06-25 Thomas Magnete Gmbh Schaltbare Magnetanordnung als Betätigungselement für ein Ventil oder andere Funktionselemente
CN101551036B (zh) * 2008-03-31 2011-06-29 台达电子工业股份有限公司 电磁阀
CN102230435B (zh) * 2011-06-14 2012-07-11 常州博瑞油泵油嘴有限公司 平面启闭型柴油机高压共轨喷油器
CN102251896B (zh) * 2011-06-14 2012-07-11 常州博瑞油泵油嘴有限公司 柴油机高压共轨喷油器的平面启闭结构
DE102012207986A1 (de) * 2012-05-14 2013-11-14 Continental Teves Ag & Co. Ohg Elektromagnetventil, insbesondere für schlupfgeregelte Kraftfahrzeugbremsanlagen
FR3002003A1 (fr) * 2013-02-11 2014-08-15 Bosch Gmbh Robert Procede de realisation d'une soupape a commande electromagnetique
CN104074656B (zh) * 2014-06-20 2016-08-24 东风悦达起亚汽车有限公司 一种喷油嘴
US11462960B2 (en) * 2019-12-02 2022-10-04 Hiwin Mikrosystem Corp. Rotor with first and second permanent magnets having support members and slots
RU205532U1 (ru) * 2021-04-19 2021-07-19 Общество с ограниченной ответственностью Управляющая компания "Алтайский завод прецизионных изделий" Дозатор шариков

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS603425Y2 (ja) * 1978-07-05 1985-01-30 日産自動車株式会社 流量制御用電磁弁
JPS5510016A (en) * 1978-07-06 1980-01-24 Nissan Motor Co Ltd Fuel injection valve
JPS5546576U (zh) * 1978-09-22 1980-03-26
JPS55130061U (zh) * 1979-03-08 1980-09-13
JPS5675955A (en) * 1979-11-21 1981-06-23 Nippon Denso Co Ltd Solenoid type fuel injection valve
ATE17883T1 (de) * 1981-04-29 1986-02-15 Solex Uk Ltd Eine elektromagnetische f luessigkeitseinspritzvorrichtung und ein einzelpunktkraftstoffeinspritzsystem fuer eine verbrennungskraftmaschine.
US4434765A (en) * 1981-10-30 1984-03-06 Colt Industries Operating Corp. Fuel injection apparatus and system

Also Published As

Publication number Publication date
JP3737119B2 (ja) 2006-01-18
EP0796393A1 (de) 1997-09-24
DE19537382A1 (de) 1997-04-10
KR100420746B1 (ko) 2004-05-20
KR980700516A (ko) 1998-03-30
CN1067463C (zh) 2001-06-20
RU2160378C2 (ru) 2000-12-10
WO1997013977A1 (de) 1997-04-17
JPH10510609A (ja) 1998-10-13
CN1166196A (zh) 1997-11-26
BR9606667A (pt) 1997-09-30
US5820032A (en) 1998-10-13
DE59607084D1 (de) 2001-07-19

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