EP0182109B1 - Electrovanne pour le réglage du fluide - Google Patents

Electrovanne pour le réglage du fluide Download PDF

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Publication number
EP0182109B1
EP0182109B1 EP85113280A EP85113280A EP0182109B1 EP 0182109 B1 EP0182109 B1 EP 0182109B1 EP 85113280 A EP85113280 A EP 85113280A EP 85113280 A EP85113280 A EP 85113280A EP 0182109 B1 EP0182109 B1 EP 0182109B1
Authority
EP
European Patent Office
Prior art keywords
valve
stop
solenoid valve
closure part
valve seat
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
Application number
EP85113280A
Other languages
German (de)
English (en)
Other versions
EP0182109A3 (en
EP0182109A2 (fr
Inventor
Ernst Dipl.-Ing. Linder
Helmut Dipl.-Ing. Rembold
Max Dr. Dipl.-Ing. Straubel
Walter Ing. Teegen (Grad.)
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 EP0182109A2 publication Critical patent/EP0182109A2/fr
Publication of EP0182109A3 publication Critical patent/EP0182109A3/de
Application granted granted Critical
Publication of EP0182109B1 publication Critical patent/EP0182109B1/fr
Expired 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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/46—Valves
    • F02M59/466—Electrically operated valves, e.g. using electromagnetic or piezoelectric 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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
    • F02M59/366—Valves being actuated electrically
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1638—Armatures not entering the winding

Definitions

  • the invention relates to a solenoid valve for fluid control according to the preamble of the main claim.
  • a solenoid valve is already known (e.g. from DE-A-2 836 225), in which the movement of the valve closing part connected to the armature in the opening direction is limited by a fixed stop, so that a valve closing part during the opening stroke There is a steep drop in the pressure of the fluid to be controlled, but after the valve closing part abuts the stop between the valve closing part and the valve seat, only a constant flow cross section is available, via which the pressure reduction of the fluid takes place in an undesired manner.
  • the solenoid valve according to the invention with the characterizing features of the main claim has the advantage, while maintaining fast switching times of the solenoid valve in a desired manner to ensure a rapid pressure reduction of the fluid to be controlled immediately after opening of the solenoid valve.
  • the stop is particularly advantageous to design the stop as a compression spring, so that with the lowering of the fluid pressure when the solenoid valve is open, the armature and the core approach, which causes the solenoid valve to close quickly when the solenoid coil is excited.
  • FIG. 1 shows a first exemplary embodiment of a solenoid valve according to the invention
  • FIG. 2 shows a diagram which shows the course of the fluid pressure and the valve opening cross section over time
  • FIG. 3 shows a second exemplary embodiment of a solenoid valve according to the invention.
  • 1 denotes a valve housing.
  • a core 2 made of ferromagnetic material is provided within the valve housing 1 and carries a magnet coil 3.
  • the core 2 has an inner cylinder 4 and an outer cylinder 5, which are arranged concentrically to one another and which encompass the magnet coil 3.
  • Inner cylinder 4 and outer cylinder 5 are connected to one another in a magnetically conductive manner by a yoke 6.
  • Averted from the yoke 6, a magnetically conductive annular plate 7 projects from the outer cylinder 5 to the inner cylinder 4.
  • the magnet coil 3 is carried by a coil body 8.
  • the magnetic circuit interrupted between the inner cylinder 4 and the annular plate 7 is bridged by an armature 10.
  • the armature 10 has a plate-shaped part 11 which merges into a hollow cylindrical connecting piece 12.
  • the connecting piece 12 faces the end face of the inner cylinder 4 and, aligned with the inner cylinder, engages through an opening 9 of the plate 7.
  • a first air gap 13 is located between the connecting piece 12 and the inner cylinder 4.
  • the plate-shaped part 11 of the armature 10 projects away from the inner cylinder 4 beyond the plate 7 and forms a second air gap 14 therewith.
  • Two guide sections 18 are pressed with the armature head 16 into the disk-shaped part 11 of the armature 10.
  • the guide bush 21 is part of a valve seat body 22 having a Zuflußbo reduction h in extension 20 to the cylinder bore of the guide bush 21 23rd
  • a cavity 24 is enclosed, from which drain holes 25 extend.
  • a valve seat 27 is formed in the valve seat body 22, with which a spherical closing body 28 of the valve closing part 15 cooperates.
  • Connecting bores 29 in the guide bushing 21 connect the cavity 24 and the annular chamber 26.
  • the drain bores 25 lead to a return flow line 31 via intermediate chambers 30.
  • the inflow bore 23 is supplied with high pressure fluid when the solenoid valve is closed, for example from the pump delivery chamber of a fuel delivery pump for fuel injection systems of internal combustion engines, while the fluid pressure in the return line 31 is low.
  • the return flow line 31 is connected, for example, to the suction side of the pump tappet of the fuel delivery pump.
  • a restoring spring 35 is supported on the guide bushing 21, which on the other hand engages the armature head 16 of the valve closing part 15 and in the non-excited state of the magnet coil 3 lifts the valve closing part 15 from the valve seat 27 and the solenoid valve in Open position holds.
  • a stop plate 36 is arranged in the valve housing 1.
  • a through hole 37 is provided which is aligned with the cylinder bore 20 in the guide bush 21 and through which a stop plunger 38 projects, which is connected to a stop head 39 of larger diameter.
  • the stop head 39 is located on the side of the stop plate 36 facing away from the armature 10.
  • the stop plunger 38 is slidably mounted in the through hole 37.
  • an additional spring 40 is supported, which on the other hand rests on a spring housing 41, which is connected to the stop plate 36, for example, by screws, not shown.
  • the additional spring 40 acts on the stop head 39 in such a way that, under a predetermined force acting on the stop plunger 38, it bears against the surface of the stop plate 36 which forms a first stop 42 and faces away from the armature 10.
  • the power supply to the magnet coil 3 takes place via electrically conductive connecting pins .47, which are arranged in the cover plate 45.
  • FIG. 2 shows the time t on the abscissa and the fluid pressure p in the inflow bore 23 on the left ordinate and the flow cross section F between the valve seat 27 and the closing body 28 of the valve closing part 15 on the right ordinate. If the magnet coil 3 is energized, the armature 10 is pulled towards the core 2, whereby the valve closing part 15 is moved according to the left-hand dashed line a in FIG. 2 to the valve seat 27, against which it bears with the closing body 28 at time t 1 .
  • the solenoid valve is now closed and a fluid pressure builds up in the inflow bore 23, for example as a result of the pump tappet delivery stroke of a fuel injection pump, as shown by the solid line b. If the excitation of the magnetic coil 3 is interrupted at time t 2 , the closing body 28 is moved on the one hand by the force of the return spring 35 and on the other hand by the force of the high fluid pressure acting on the closing body 28 in the opening direction to the stop plunger 38, as a result of which a flow cross section for the Fluid between the valve seat 27 and the closing body 28 according to the right dashed curve c results.
  • the stop plunger 38 is displaceably mounted against the force of the additional spring 40 such that, after the excitation of the magnetic coil 3 has been interrupted, the sum of the force of the return spring 35 and the force of the fluid pressure on the closing body 28 is sufficient, the force of the additional spring 40 to overcome, so that the valve closing part 15 after its contact with the stop plunger 38 moves the stop plunger 38 in the opening direction of the valve closing part 15, whereby the stop head 39 lifts off the stop plate 36 and a larger flow cross section is opened between the valve seat 27 and the closing body 28, such as it is represented by the dash-dotted line g.
  • the parts which remain the same and have the same effect as the magnetic valve according to FIG. 1 are identified by the same reference numerals.
  • no return spring 35 has to be provided in the solenoid valve according to FIG. 3 and the stop plunger 38 with stop head 39 and additional spring 40 is omitted.
  • a compression spring 50 is arranged, the armature 10 and the valve closing part 15 is urged towards the valve seat 27 and serves as a resilient stop.

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)
  • Power Engineering (AREA)
  • Magnetically Actuated Valves (AREA)

Claims (4)

1. Electrovanne pour le réglage du fluide avec une cage de soupape (1), une bobine d'électroaimant (3) introduite dans un noyau (2) en matériau ferromagnétique et un induit (10) qui actionne une pièce de fermeture de soupape (15) agissant sur un siège de soupape (27) fixe et qui par l'excitation de la bobine magnétique (3) presse la pièce de fermeture de soupape (15) sur le siège de soupape (27) dans la direction opposée au courant du fluide, pièce qui après l'interruption de l'excitation de la bobine magnétique (3), par suite de la force exercée par la pression du fluide, se déplace du siège de soupape (27) dans le sens d'ouverture vers une butée (38, 50), caractérisé en ce que la butée (38, 50) dans le sens d'ouverture de la pièce de fermeture de soupape (15) est réalisée flexible, de sorte qu'après l'interruption de l'excitation de la bobine magnétique (3) la pièce de fermeture de soupape (15) peut être soulevée hors du siège de soupape (27) différemment en fonction de la pression de fluide agissant sur la pièce de fermeture de soupape (15).
2. Electrovanne selon la revendication 1, caractérisée en ce que la butée (38, 39) est montée coulissable dans le sens de l'ouverture de la pièce de fermeture de soupape (15) en opposition à la force d'un ressort auxiliaire (40).
3. Electrovanne selon la revendication 2, caractérisée en ce que la butée (35, 39) au-dessus d'une pression de fluide déterminée, agissant sur la pièce de fermeture de soupape (15) peut être soulevée d'une butée de secours (36, 42).
4. Electrovanne selon la revendication 1, caractérisée en ce que la butée est réalisée comme ressort de pression (50).
EP85113280A 1984-11-23 1985-10-19 Electrovanne pour le réglage du fluide Expired EP0182109B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843442750 DE3442750A1 (de) 1984-11-23 1984-11-23 Magnetventil zur fluidsteuerung
DE3442750 1984-11-23

Publications (3)

Publication Number Publication Date
EP0182109A2 EP0182109A2 (fr) 1986-05-28
EP0182109A3 EP0182109A3 (en) 1987-08-05
EP0182109B1 true EP0182109B1 (fr) 1989-07-19

Family

ID=6250985

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85113280A Expired EP0182109B1 (fr) 1984-11-23 1985-10-19 Electrovanne pour le réglage du fluide

Country Status (4)

Country Link
US (1) US4690373A (fr)
EP (1) EP0182109B1 (fr)
JP (1) JPH0633826B2 (fr)
DE (2) DE3442750A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104685201A (zh) * 2012-09-06 2015-06-03 德尔福国际运营卢森堡有限公司 泵单元及操作该泵单元的方法

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2042184T3 (es) * 1985-12-02 1993-12-01 Marco Alfredo Ganser Dispositivo para el control de los inyectores de combustible de accionamiento electrohidraulico.
CH672358A5 (fr) * 1986-10-21 1989-11-15 Jossi Hans Praezisionsmechanik
DE3732553A1 (de) * 1987-09-26 1989-04-13 Bosch Gmbh Robert Magnetventil
DE3888468T2 (de) * 1987-12-02 1994-09-29 Ganser Hydromag Elektronisch gesteuertes Brennstoffeinspritzventil.
US5087315A (en) * 1988-01-15 1992-02-11 The Secretary Of State For Trade & Industry In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Fabric lifting apparatus and method
GB8828160D0 (en) * 1988-12-02 1989-01-05 Lucas Ind Plc Fluid control valve
US5114077A (en) * 1990-12-12 1992-05-19 Siemens Automotive L.P. Fuel injector end cap
JPH0742644A (ja) * 1992-10-29 1995-02-10 Nippon Soken Inc 電磁弁
JP3142038B2 (ja) * 1993-12-03 2001-03-07 株式会社デンソー 電磁弁
US5417373A (en) * 1994-02-10 1995-05-23 Siemens Automotive L.P. Electromagnet for valves
US5927614A (en) * 1997-08-22 1999-07-27 Touvelle; Matthew S. Modular control valve for a fuel injector having magnetic isolation features
US5961045A (en) * 1997-09-25 1999-10-05 Caterpillar Inc. Control valve having a solenoid with a permanent magnet for a fuel injector
US6360773B1 (en) 1999-06-21 2002-03-26 Honeywell International Inc. Methods for monitoring wear in seat materials of valves
JP5271216B2 (ja) * 2009-09-17 2013-08-21 日立オートモティブシステムズ株式会社 ノーマルオープン型電磁弁
CN107218724B (zh) * 2017-08-02 2022-08-16 广东华工环源环保科技有限公司 一种导热油锅炉保护装置及保护方法

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US1175864A (en) * 1915-04-01 1916-03-14 Gold Car Heating & Lighting Co Magnetic valve.
US2826215A (en) * 1954-04-21 1958-03-11 Alco Valve Co Balanced pressure solenoid valve
CH387405A (de) * 1961-03-20 1965-01-31 Eldima Ag Stopfbuchsenloses Elektroventil
CH405843A (de) * 1963-11-15 1966-01-15 Eldima Ag Elektromagnetischer Antriebsmagnet und Verwendung desselben als Bestandteil eines Elektroventils
US3529620A (en) * 1966-11-04 1970-09-22 Teldix Gmbh Electromagnetically actuated stroke adjustable valve
DE1913808C3 (de) * 1969-03-19 1976-01-08 Robert Bosch Gmbh, 7000 Stuttgart Überdrehsicherung für Einspritzpumpen von Brennkraftmaschinen
DE2347864C2 (de) * 1973-09-22 1981-12-17 G.L. Rexroth Gmbh, 8770 Lohr Von einem Regelmagneten einzustellendes Druckventil
US4129253A (en) * 1977-09-12 1978-12-12 General Motors Corporation Electromagnetic unit fuel injector
DE2847748A1 (de) * 1978-11-03 1980-05-22 Bosch Gmbh Robert Wassersteuerventil fuer eine kraftfahrzeug-klimaanlage, insbesondere heizungsanlage, sowie verfahren zu dessen herstellung, insbesondere justierung
IT1144260B (it) * 1981-07-01 1986-10-29 Fiat Ricerche Sistema idraulico a pilotaggio elettrico proporzionale
DE3130851C2 (de) * 1981-08-04 1985-12-05 Mac Valves, Inc., Wixom, Mich. Vorsteuerluftventil
JPS5846284A (ja) * 1981-09-14 1983-03-17 Kayaba Ind Co Ltd 電磁比例弁
DE3139669A1 (de) * 1981-10-06 1983-04-21 Robert Bosch Gmbh, 7000 Stuttgart Magnetventil, insbesondere kraftstoffeinspritzventil
EP0077599B1 (fr) * 1981-10-16 1985-09-25 Borg-Warner Corporation Electrovanne proportionnelle
DE8232134U1 (de) * 1981-11-19 1983-03-24 Honeywell and Philips Medical Electronics B.V., 5611 Eindhoven Magnetventil, insbesondere dosierventil fuer beatmungsgeraete

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104685201A (zh) * 2012-09-06 2015-06-03 德尔福国际运营卢森堡有限公司 泵单元及操作该泵单元的方法

Also Published As

Publication number Publication date
DE3442750A1 (de) 1986-05-28
JPS61130681A (ja) 1986-06-18
US4690373A (en) 1987-09-01
DE3571682D1 (en) 1989-08-24
EP0182109A3 (en) 1987-08-05
EP0182109A2 (fr) 1986-05-28
JPH0633826B2 (ja) 1994-05-02

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