EP1042606A1 - Soupape a actionnement electromagnetique - Google Patents

Soupape a actionnement electromagnetique

Info

Publication number
EP1042606A1
EP1042606A1 EP99929071A EP99929071A EP1042606A1 EP 1042606 A1 EP1042606 A1 EP 1042606A1 EP 99929071 A EP99929071 A EP 99929071A EP 99929071 A EP99929071 A EP 99929071A EP 1042606 A1 EP1042606 A1 EP 1042606A1
Authority
EP
European Patent Office
Prior art keywords
valve
face
armature
core
valve according
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
EP99929071A
Other languages
German (de)
English (en)
Other versions
EP1042606B1 (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 EP1042606A1 publication Critical patent/EP1042606A1/fr
Application granted granted Critical
Publication of EP1042606B1 publication Critical patent/EP1042606B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • 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
    • 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
    • F02M51/0614—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of electromagnets or fixed armature
    • 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

Definitions

  • the invention relates to an electromagnetically actuated valve according to the preamble of the main claim.
  • DE-OS 38 10 826 describes a fuel injector in which at least one stop surface is designed in the shape of a spherical cap in order to achieve an extremely precise air gap, with an additional round body insert made of non-magnetic, high-strength material being inserted in the center of the stop surface.
  • the two spherical cap-shaped abutment surfaces touch exactly in the center of the valve longitudinal axis.
  • an electromagnetically actuated valve is already known, which has a special stop area.
  • the valve has at least one component, the armature and / or the core, which, prior to the application of a wear-resistant layer, has a wedge-shaped surface which can be variably produced in accordance with a magnetic and hydraulic optimum.
  • An annular stop section formed by the wedge shape has a defined stop surface width or contact width which remains constant over the entire service life, since wear of the stop surface does not lead to an increase in the contact width during continuous operation.
  • the abutment surface is not undesirably increased by wear, so that the pulling and falling times of the movable component remain almost constant. This is achieved in that one of the abutting components already has a spherically curved surface before the wear resistance is generated.
  • the components designed in this way have the advantage of improved durability, since the stop is in the area of an annular line of contact in the center of the surface and not on the edges at risk of damage.
  • FIG. 1 shows an electromagnetically actuated valve in the form of a fuel injection valve
  • FIG. 2 shows an enlarged stop of the injection valve in the area of the core and armature according to FIG. 1 with a geometric illustration
  • FIG. 3 shows a second example of a device according to the invention trained stop area
  • Figure 4 shows a third example of a stop area.
  • the electromagnetically actuated valve in the form of an injection valve for fuel injection systems of mixture-compressing, spark-ignited internal combustion engines, which is shown by way of example in FIG. 1, has a valve surrounded by a magnet coil 1 as
  • Fuel inlet connector serving core 2 which is tubular, for example, here.
  • a coil body 3 receives a winding of the magnet coil 1 and, in conjunction with the core 2, enables a particularly compact structure of the injection valve in the region of the magnet coil 1.
  • a tubular metal valve seat support 12 is tightly connected, for example by welding, concentrically to a longitudinal valve axis 10 and partially surrounds the core end 9.
  • Valve seat carrier 12 runs a longitudinal bore 17, which is formed concentrically with the valve longitudinal axis 10.
  • a e.g. Tubular valve needle 19 is arranged, which is connected at its downstream end 20 to a spherical valve closing body 21, on the periphery of which, for example, five flats 22 are provided for the fuel to flow past, for example by welding.
  • the injection valve is actuated electromagnetically in a known manner.
  • the electromagnetic circuit is used, inter alia, with the magnet coil 1, the core 2 and an armature 27.
  • the armature 27 is at the end facing away from the valve closing body 21 the valve needle 19 firmly connected and aligned to the core 2.
  • a cylindrical valve seat body 29 which has a fixed valve seat, is tightly mounted in the longitudinal bore 17 by welding.
  • a guide opening 32 of the valve seat body 29 serves to guide the valve closing body 21 during its axial movement along the longitudinal valve axis 10.
  • the armature 27 is guided as part of the axially movable valve needle 19 in the region of a thin-walled magnetic throttle point 42 in the longitudinal bore 17 of the valve seat carrier 12.
  • the spherical valve closing body 21 interacts with the valve seat of the valve seat body 29 which tapers in the shape of a truncated cone in the direction of flow.
  • the valve seat body 29 is connected concentrically and firmly to an injection-orifice disk 34, for example in the form of a pot, which e.g. has four spray openings 39 formed by eroding or stamping.
  • the insertion depth of the valve seat body 29 with the cup-shaped spray orifice plate 34 determines the setting of the stroke of the valve needle 19.
  • the one end position of the valve needle 19 when the solenoid coil 1 is not energized is determined by the valve closing body 21 resting on the valve seat of the valve seat body 29, while the other end position is fixed the valve needle 19 results when the solenoid coil 1 is excited by the contact of the armature 27 at the core end 9.
  • This stop area according to the invention is identified in more detail by a circle and is shown again in FIG.
  • a flow hole 46 of the core 2 which is inserted into a flow bore 46 which runs concentrically to the longitudinal valve axis 10
  • Adjustment sleeve 48 is used to adjust the spring preload the restoring spring 25 resting on the adjusting sleeve 48, which in turn is supported with its opposite side on the valve needle 19.
  • the injection valve is largely with a
  • Plastic encapsulation 50 enclosed, which extends from the core 2 in the axial direction over the solenoid 1 to the valve seat support 12.
  • This plastic encapsulation 50 includes, for example, an injection-molded electrical connector 52.
  • a fuel filter 61 protrudes into the flow bore 46 of the core 2 at its inlet end and filters out those fuel components which, because of their size, could cause blockages or damage in the injection valve.
  • one of the two opposing end faces of the core 2 or of the armature 27 is spherically curved in the stop region, in particular spherically, spherically section-shaped or spherical cap section-shaped, with an end face ultimately forming an annular spherical section due to the annular design of core 2 and armature 27.
  • a dash-dot line 70 a radius is shown as a circular section in FIG. 1 in order to illustrate this convex curvature.
  • the center point 71 of an (imaginary) ball provided with the radius R (FIG. 2) ideally lies in the center of the spherical valve closing body 21, that is to say at the point at which the valve longitudinal axis 10 pierces the plane of the ball equator of the valve closing body 21.
  • FIG. 2 the stop area marked with a circle in FIG. 1 is shown again enlarged.
  • the upper end face 73 of the armature 27 facing the core 2 has a constant radius spherical, convex.
  • the lower end face 74 of the core 2 facing the armature 27 is flat and inclined to the longitudinal axis 10 of the valve. The inclination of the end face 74 is chosen so that the end face 74 at a desired point of contact 75 of the
  • Armature 27 (viewed only the plane of the drawing) or at a desired annular contact line 75 of the anchor 27 (viewed as a real three-dimensional component) extends tangentially to the spherical surface.
  • the center point 71 of an (imaginary) ball provided with the radius R for the end face 73 of the armature 27 which is in the form of a spherical segment advantageously lies in the center of the spherical valve closing body 21.
  • the center 71 for the (imaginary) ball it is also possible to move the center 71 for the (imaginary) ball to achieve the spherical section-shaped end face 73 of the armature 27 on the valve longitudinal axis 10 in both directions, so that the spherical section-shaped end face 73 a smaller or has a larger radius than the radius R according to FIG. 2.
  • the center of rotation should advantageously lie on the valve longitudinal axis 10 in order to achieve a uniform curvature of the end face 73 over its entire ring extension.
  • FIGS. 3 and 4 show two further examples of stop areas designed according to the invention.
  • the exemplary embodiment according to FIG. 3 only the end faces 73, 74 are reversed compared to the arrangement according to FIG.
  • the lower end face 74 of the core 2 is thus curved in the shape of a spherical segment, while the upper end face 73 of the armature 27 runs flat and inclined at an angle to the longitudinal axis 10 of the valve.
  • the center 71 of the (imaginary) ball lies far above the core end 9 on the longitudinal valve axis 10.
  • FIG. 4 shows an example that is more difficult to manufacture in terms of production technology, in which there is not only a center 71 of an (imaginary) ball for producing the curved end face 73 of the armature 27 in the form of a spherical segment. Rather, there are a large number of pivot points apart from the valve longitudinal axis 10 and even outside the circumference of the armature 27 in order to achieve a uniform curvature over the entire end face 73 in the circumferential direction.
  • All of the exemplary embodiments have the advantage of improved endurance resistance since the stop (contact line 75) is in the center of the surface and not on the edges at risk of damage.
  • Thin metallic layers e.g. Chrome or nickel layers, applied by electroplating. These layers are particularly wear-resistant and reduce hydraulic sticking of the striking surfaces.
  • end faces 73, 74 can be made at least partially wear-resistant in the central region by treating the surface by means of a hardening process.
  • a hardening process e.g. the well-known
  • Nitriding processes such as plasma nitriding or gas nitriding, or carburizing are suitable.
  • hardening processes by means of which the surface structure on the armature 27 and / or core 2 is changed, processes for immediate coating can even be dispensed with entirely.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

L'invention concerne une soupape à actionnement électromagnétique, qui présente une zone de butée partie centrale/induit (2/27) d'une conception spéciale. La soupape comporte un composant, par exemple l'induit (27), qui présente, avant l'application d'une couche résistant à l'usure, un contour de forme sphérique, dans la zone de sa face (73) opposée à l'autre composant (2), ce contour s'étendant de façon constante et annulaire dans le sens circonférentiel. Cette soupape convient particulièrement pour une utilisation dans des installations d'injection de carburant de moteurs à combustion interne à compression du mélange et à allumage commandé.
EP99929071A 1998-07-24 1999-05-03 Soupape a actionnement electromagnetique Expired - Lifetime EP1042606B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19833461A DE19833461A1 (de) 1998-07-24 1998-07-24 Elektromagnetisch betätigbares Ventil
DE19833461 1998-07-24
PCT/DE1999/001286 WO2000006893A1 (fr) 1998-07-24 1999-05-03 Soupape a actionnement electromagnetique

Publications (2)

Publication Number Publication Date
EP1042606A1 true EP1042606A1 (fr) 2000-10-11
EP1042606B1 EP1042606B1 (fr) 2004-08-04

Family

ID=7875262

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99929071A Expired - Lifetime EP1042606B1 (fr) 1998-07-24 1999-05-03 Soupape a actionnement electromagnetique

Country Status (9)

Country Link
US (1) US6302371B1 (fr)
EP (1) EP1042606B1 (fr)
JP (1) JP2002521614A (fr)
KR (1) KR20010023935A (fr)
BR (1) BR9906617A (fr)
DE (2) DE19833461A1 (fr)
ES (1) ES2226401T3 (fr)
RU (1) RU2226615C2 (fr)
WO (1) WO2000006893A1 (fr)

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US6676044B2 (en) 2000-04-07 2004-01-13 Siemens Automotive Corporation Modular fuel injector and method of assembling the modular fuel injector
US6481646B1 (en) 2000-09-18 2002-11-19 Siemens Automotive Corporation Solenoid actuated fuel injector
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US6508417B2 (en) 2000-12-29 2003-01-21 Siemens Automotive Corporation Modular fuel injector having a snap-on orifice disk retainer and having a lift set sleeve
US6568609B2 (en) 2000-12-29 2003-05-27 Siemens Automotive Corporation Modular fuel injector having an integral or interchangeable inlet tube and having an integral filter and o-ring retainer assembly
US6565019B2 (en) 2000-12-29 2003-05-20 Seimens Automotive Corporation Modular fuel injector having a snap-on orifice disk retainer and having an integral filter and O-ring retainer assembly
US6655609B2 (en) 2000-12-29 2003-12-02 Siemens Automotive Corporation Modular fuel injector having a low mass, high efficiency electromagnetic actuator and having an integral filter and o-ring retainer assembly
US6550690B2 (en) 2000-12-29 2003-04-22 Siemens Automotive Corporation Modular fuel injector having interchangeable armature assemblies and having an integral filter and dynamic adjustment assembly
US6502770B2 (en) 2000-12-29 2003-01-07 Siemens Automotive Corporation Modular fuel injector having a snap-on orifice disk retainer and having a terminal connector interconnecting an electromagnetic actuator with an electrical terminal
US6523760B2 (en) 2000-12-29 2003-02-25 Siemens Automotive Corporation Modular fuel injector having interchangeable armature assemblies and having a terminal connector interconnecting an electromagnetic actuator with an electrical terminal
US6533188B1 (en) 2000-12-29 2003-03-18 Siemens Automotive Corporation Modular fuel injector having a snap-on orifice disk retainer and having an integral filter and dynamic adjustment assembly
US6543707B2 (en) 2000-12-29 2003-04-08 Siemens Automotive Corporation Modular fuel injector having a lift set sleeve
US6547154B2 (en) 2000-12-29 2003-04-15 Siemens Automotive Corporation Modular fuel injector having a terminal connector interconnecting an electromagnetic actuator with a pre-bent electrical terminal
US6708906B2 (en) 2000-12-29 2004-03-23 Siemens Automotive Corporation Modular fuel injector having a surface treatment on an impact surface of an electromagnetic actuator and having an integral filter and dynamic adjustment assembly
US6523756B2 (en) 2000-12-29 2003-02-25 Siemens Automotive Corporation Modular fuel injector having a low mass, high efficiency electromagnetic actuator and having a lift set sleeve
US6499677B2 (en) 2000-12-29 2002-12-31 Siemens Automotive Corporation Modular fuel injector having a low mass, high efficiency electromagnetic actuator and having an integral filter and dynamic adjustment assembly
US6607143B2 (en) 2000-12-29 2003-08-19 Siemens Automotive Corporation Modular fuel injector having a surface treatment on an impact surface of an electromagnetic actuator and having a lift set sleeve
US6520421B2 (en) 2000-12-29 2003-02-18 Siemens Automotive Corporation Modular fuel injector having an integral filter and o-ring retainer
US6523761B2 (en) 2000-12-29 2003-02-25 Siemens Automotive Corporation Modular fuel injector having an integral or interchangeable inlet tube and having a lift set sleeve
US6698664B2 (en) 2000-12-29 2004-03-02 Siemens Automotive Corporation Modular fuel injector having an integral or interchangeable inlet tube and having an integral filter and dynamic adjustment assembly
US6695232B2 (en) 2000-12-29 2004-02-24 Siemens Automotive Corporation Modular fuel injector having interchangeable armature assemblies and having a lift set sleeve
US6511003B2 (en) 2000-12-29 2003-01-28 Siemens Automotive Corporation Modular fuel injector having an integral or interchangeable inlet tube and having a terminal connector interconnecting an electromagnetic actuator with an electrical terminal
US6499668B2 (en) 2000-12-29 2002-12-31 Siemens Automotive Corporation Modular fuel injector having a surface treatment on an impact surface of an electromagnetic actuator and having a terminal connector interconnecting an electromagnetic actuator with an electrical terminal
US6811091B2 (en) 2000-12-29 2004-11-02 Siemens Automotive Corporation Modular fuel injector having an integral filter and dynamic adjustment assembly
US6536681B2 (en) 2000-12-29 2003-03-25 Siemens Automotive Corporation Modular fuel injector having a surface treatment on an impact surface of an electromagnetic actuator and having an integral filter and O-ring retainer assembly
US6520422B2 (en) 2000-12-29 2003-02-18 Siemens Automotive Corporation Modular fuel injector having a low mass, high efficiency electromagnetic actuator and having a terminal connector interconnecting an electromagnetic actuator with an electrical terminal
US6687997B2 (en) 2001-03-30 2004-02-10 Siemens Automotive Corporation Method of fabricating and testing a modular fuel injector
US6676043B2 (en) 2001-03-30 2004-01-13 Siemens Automotive Corporation Methods of setting armature lift in a modular fuel injector
US6904668B2 (en) 2001-03-30 2005-06-14 Siemens Vdo Automotive Corp. Method of manufacturing a modular fuel injector
US7093362B2 (en) 2001-03-30 2006-08-22 Siemens Vdo Automotive Corporation Method of connecting components of a modular fuel injector
DE10124743A1 (de) * 2001-05-21 2002-11-28 Bosch Gmbh Robert Brennstoffeinspritzventil
US20050156057A1 (en) * 2002-09-12 2005-07-21 Volkswagen Mechatronic Gmbh & Co. Kg Pump-nozzle unit and method for setting the hardness of bearing regions of a control valve
DE10242376A1 (de) * 2002-09-12 2004-03-25 Siemens Ag Pumpe-Düse-Einheit und Verfahren zur Einstellung der Härte von Anlagebereichen eines Steuerventils
DE10332348A1 (de) * 2003-07-16 2005-02-03 Robert Bosch Gmbh Brennstoffeinspritzventil
JP4064934B2 (ja) * 2004-02-27 2008-03-19 三菱重工業株式会社 電磁弁装置
JP4167995B2 (ja) * 2004-03-17 2008-10-22 株式会社ケーヒン 電磁弁
US7389952B2 (en) * 2004-08-04 2008-06-24 Continental Automotive Systems Us, Inc. Deep pocket seat assembly in modular fuel injector with unitary filter and O-ring retainer assembly and methods
DE102004058677A1 (de) * 2004-12-06 2006-06-14 Robert Bosch Gmbh Einspritzventil
JP2006233887A (ja) * 2005-02-25 2006-09-07 Denso Corp 燃料噴射弁
DE102005052255B4 (de) * 2005-11-02 2020-12-17 Robert Bosch Gmbh Brennstoffeinspritzventil
DE102005061409A1 (de) * 2005-12-22 2007-06-28 Robert Bosch Gmbh Elektromagnetisch betätigbares Ventil
DE102006021736A1 (de) * 2006-05-10 2007-11-15 Robert Bosch Gmbh Kraftstoffinjektor mit druckausgeglichenem Steuerventil
US20100025500A1 (en) * 2008-07-31 2010-02-04 Caterpillar Inc. Materials for fuel injector components
US8585014B2 (en) * 2009-05-13 2013-11-19 Keihin Corporation Linear solenoid and valve device using the same
DE102010062077A1 (de) 2010-11-26 2012-05-31 Robert Bosch Gmbh Ventileinrichtung mit einem wenigstens abschnittsweise zylindrischen Bewegungselement
DE102013209672A1 (de) 2013-05-24 2014-11-27 Robert Bosch Gmbh Elektromagnetisch betätigbares Ventil
KR101554243B1 (ko) * 2014-02-04 2015-09-18 김영희 가스차량 엔진용 연료가스 인젝터
DK178427B1 (en) * 2015-04-29 2016-02-22 Hans Jensen Lubricators As Lubricant injector for large slow-running two-stroke engine and production method
DE102016203083A1 (de) * 2016-02-26 2017-08-31 Robert Bosch Gmbh Magnetventil
JP2019210901A (ja) * 2018-06-07 2019-12-12 愛三工業株式会社 燃料噴射弁
DE102020215169A1 (de) * 2020-12-02 2022-06-02 Robert Bosch Gesellschaft mit beschränkter Haftung Gasdosierventil für gasförmigen Brennstoff

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Also Published As

Publication number Publication date
BR9906617A (pt) 2000-09-19
US6302371B1 (en) 2001-10-16
EP1042606B1 (fr) 2004-08-04
KR20010023935A (ko) 2001-03-26
DE59910132D1 (de) 2004-09-09
ES2226401T3 (es) 2005-03-16
RU2226615C2 (ru) 2004-04-10
JP2002521614A (ja) 2002-07-16
DE19833461A1 (de) 2000-01-27
WO2000006893A1 (fr) 2000-02-10

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