EP0054108A2 - Soupape actionnable électromagnétiquement, en particulier soupape d'injection de carburant pour une installation d'injection de carburant - Google Patents

Soupape actionnable électromagnétiquement, en particulier soupape d'injection de carburant pour une installation d'injection de carburant Download PDF

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Publication number
EP0054108A2
EP0054108A2 EP81107254A EP81107254A EP0054108A2 EP 0054108 A2 EP0054108 A2 EP 0054108A2 EP 81107254 A EP81107254 A EP 81107254A EP 81107254 A EP81107254 A EP 81107254A EP 0054108 A2 EP0054108 A2 EP 0054108A2
Authority
EP
European Patent Office
Prior art keywords
valve
guide
core
valve according
fuel
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
EP81107254A
Other languages
German (de)
English (en)
Other versions
EP0054108B1 (fr
EP0054108A3 (en
Inventor
Rudolf Krauss
Udo Hafner
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.)
OFFERTA DI LICENZA AL PUBBLICO
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 EP0054108A2 publication Critical patent/EP0054108A2/fr
Publication of EP0054108A3 publication Critical patent/EP0054108A3/de
Application granted granted Critical
Publication of EP0054108B1 publication Critical patent/EP0054108B1/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
    • 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
    • F02M51/0635—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding
    • F02M51/0642—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature having a valve attached thereto
    • F02M51/0646—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature having a valve attached thereto the valve being a short body, e.g. sphere or cube
    • F02M51/065—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature having a valve attached thereto the valve being a short body, e.g. sphere or cube the valve being spherical or partly spherical
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/50—Arrangements of springs for valves used in fuel injectors or fuel injection pumps
    • F02M2200/505—Adjusting spring tension by sliding spring seats
    • 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 invention relates to an electromagnetically actuated valve according to the preamble of the main claim.
  • An electromagnetically actuated valve is already known, in which the armature is firmly connected to a guide membrane which is clamped on the outer circumference of the housing.
  • an additional operation is required to connect the anchor and the guide membrane, and the connection of anchor and guide membrane in the guide membrane causes stresses which lead to an inclination of the anchor relative to the core, which increases the risk there is that the anchor is not tightened in parallel.
  • the known design of the magnetic part for generating the desired magnetic forces requires a relatively large amount of space, which is contrary to a desired reduction in the size of the valve.
  • valve according to the invention with the characterizing features of the main claim has the advantage over it a low-friction and plane-parallel guidance of the flat armature with a small-sized design of the magnetic part and the avoidance of an additional work step and the inclined guidance of the armature due to tension in the guide membrane.
  • the core is particularly advantageous to design the core as a shell core, the inner and outer core of which interact with one working area of the flat anchor.
  • valve part with a spherical section which interacts with the valve seat.
  • valve housing without cutting, e.g. to manufacture by deep drawing, rolling, etc. and in its housing wall offset in the radial direction against each other to provide inflow openings and outflow openings, via which fuel not metered after flowing around the magnetic part can flow out while absorbing heat.
  • FIG. 1 shows a first Embodiment of an electromagnetically actuated fuel injection valve
  • Figure 2 shows a second embodiment of an electromagnetically actuated fuel injection valve.
  • the fuel injection valve for a fuel injection system shown in FIGS. 1 and 2 is used, for example, to inject fuel, in particular with low pressure into the intake manifold of mixture-compressing, spark-ignition internal combustion engines.
  • 1 denotes a valve housing which is manufactured by non-cutting shaping, for example deep drawing, rolling and the like, and has a cup-shaped shape with a base 2, from which a tubular guide stub 3 is formed, which has a guide bore 4, which also has the Bottom 2 penetrates and opens into the interior 5 of the valve housing 1.
  • a shell core 7 made of ferromagnetic material is inserted, which has a smaller diameter than the interior 5 and abuts an inner shoulder 9 of the valve housing 1 with a collar 8.
  • a spacer ring 10 engages, which is adjoined by a guide membrane 11 and a nozzle carrier 12, a flanged edge 13 partially engaging around the end face of the nozzle carrier 12 and exerting an axial clamping force thereon, which fixes the position of the shell core 7, the spacer ring 10, the guide membrane 11 and the nozzle carrier 12 guaranteed.
  • the shell core 7 for example, a commercially available shell core T 26 from Siemens can be used, which has an annular outer core 15 and one connected to it via a yoke 16 has annular inner core 17.
  • a magnet coil 18 is at least partially enclosed by an insulating carrier body 19, which is inserted with the magnet coil 18 into the annular space of the shell core 7 formed between the outer core 15 and the inner core 17 and is positively connected to the yoke 16, for example by rivets 20 or a releasable snap connection.
  • the power supply to the magnetic coil 18 is advantageously carried out via contact pins 22, only one of which is shown, which are enclosed in an insulation insert 23, for example glass, the insulation insert 23 being able to be surrounded by a fastening ring 24 which is in a through-bore 25 of the valve housing base 2 used sealingly and for example soldered: With the contact pins 22, plug connections can be connected either in a manner not shown but known or electrical cables.
  • a contact tab 26 is provided between the magnetic coil 18 and the contact pins 22 for length compensation in the case of thermal expansion.
  • a flat anchor 29 is arranged between the end face 28 of the shell core 7 facing away from the yoke 16 and the guide membrane 11.
  • a movable valve part 30 is connected to the flat anchor, for example soldered or welded.
  • the valve part 30 penetrates a central guide opening 31 in the guide membrane 11 and works together with a fixed valve seat 32 which is formed in a valve seat body 33.
  • the valve seat body 33 is inserted into the nozzle holder 12.
  • the valve part 30 and the flat armature 29 are guided through the central guide opening 31 of the guide membrane 11 in the radial direction on the one hand to the valve seat 32 and on the other hand to the end face 28 of the shell core 7.
  • a rigid connection of the guide membrane 11 be stands neither with the valve part 30 nor with the flat anchor 29.
  • the flat anchor 29 can be designed as a stamped or pressed part and, for example, have an annular guide ring 34 facing the guide membrane 11, which improves the rigidity of the flat anchor 29 on the one hand, and a first on the other Working area 36 of the flat anchor, which is assigned to the end face of the outer core 15, separates from a second working area 37, which is assigned to the end face of the inner core 17, and thirdly forms a guide edge 35 which bears against the guide membrane 11, as a result of which the flat anchor 29 is plane-parallel to End face 28 of the shell core 7 is guided.
  • the valve part 30 has a spherical section 38 which interacts with the valve seat 32, for example, is flattened as a spherical zone.
  • the guiding membrane 11 is clamped between the spacer ring 10 and the nozzle carrier 12 in a plane which, when the valve part 30 rests against the valve seat 32, passes through the center M or as close as possible to the center M of the spherical section 38.
  • the guide diaphragm 11 bends under tension under tension against the guide edge 35 of the flat armature 29.
  • the valve part 30 is acted upon in the closing direction of the valve by a compression spring 39 which, on the other hand, projects into an inner bore 40 of the shell core 7 and is supported on a slide member 41.
  • the force of the compression spring 39 on the flat armature 29 and the valve part 30 can be influenced by axially displacing the slide member 41.
  • the slide member 41 is pressed into the guide bore 4 of the base 2 and guide socket 3 and has a section with notches 43, for example, in the region of the guide socket 3 flat ring grooves, threads, knurls or the like, in order to ensure a better axial fixation of the slide member 41, by pressing the guide socket 3 in the area of the notches 43 inwards, so that material of the guide socket 3 penetrates into the notches 43 of the slide member 41.
  • the end of the slide member 41 facing away from the flat anchor 29 is designed such that it ends within the guide socket 3 and has a pin 44 with a smaller diameter than the guide bore 4. A suitable tool can act on the pin 44 for displacing the slide member 41.
  • the slide member 41 has a longitudinal bore 45 that is open toward the flat armature 29 and, on the other hand, opens outside the shell core 7 in transverse bores 46 to the circumference of the slide member 41 in the interior 5 of the valve housing 1.
  • the valve part 30 has a cylindrical section 48 connected to the flat armature 29, to which the spherical section 38 of the valve part adjoins. Open toward the flat armature 29, the valve part 30 is provided with a concentric blind hole 49 which leads as far as possible into the spherical section 38.
  • the compression spring 39 which is in contact with the slide member 41, passes through an opening 50 of the flat armature and, on the other hand, is supported in the valve part 30 at the base 51 of the blind hole 49, so that when the magnet part 7, 18, 29 is not excited, the valve part 30 counteracts the spring force of the guide membrane 11 is held sealingly on the valve seat 32.
  • Cross bores 52 run from the circumference of the valve part 30 to the blind bore 49.
  • a collecting space 54 is formed downstream of the valve seat 32, the volume of which should be as small as possible that is limited by the valve seat body 33, the spherical section 38 and a swirl body 55 arranged downstream of the valve seat body 33.
  • a flange 56 of the nozzle carrier 12 engages around a surface of the swirl body 55 facing away from the valve seat body 33, as a result of which the valve seat body 33 and the swirl body 55 are fixed in their position.
  • the swirl body 55 has a projection 57 protruding into the collecting space 54, the end face of which is flattened facing the valve part 30 and from whose lateral, for example conical circumferential wall 58 branch off to the swirl channels 59 which open towards the collecting chamber 54 and which, in a known manner, incline at an angle to the valve axis can be and open into a swirl chamber 60.
  • the swirl channels 59 can open tangentially into the swirl chamber 60 and are used for metering the fuel.
  • the fuel film that forms on the wall of the swirl chamber 60 tears off at the sharp end of the swirl chamber 60, which opens into the intake manifold, and thus enters conically into the air flow of the intake manifold, which ensures good preparation of the fuel, in particular with low fuel pressures .
  • the fuel injection valve mounted in a holding body 62 can be fixed in its position, for example, by a claw or a cover 63 and has a first annular groove 64 in the valve housing 1 and offset in the axial direction and seals off a second annular groove 65 with respect to the first annular groove 64
  • a fuel inflow line 66 is formed, which opens into the first annular groove 64.
  • a fuel return flow line 67 is formed in the holding body 62, which is connected to the second annular groove 65.
  • Radial inflow openings 68 in the wall of the cylindrical, tubular Part of the valve housing 1 connect the first annular groove 64 to a flow channel 69, which is formed between the outer core 15 and the inner wall of the valve housing 1.
  • the part of the interior 5 lying above the shell core 7 is connected to the second annular groove 65 via radially extending drain openings 70 formed in the cylindrical, tubular part of the valve housing and is separated from the flow channel 69 by a sealing body 71.
  • the guide membrane 11 has flow openings 73, as 29 flow openings 74 can also be formed in the flat armature.
  • the fuel flowing into the flow channel 69 via the inflow openings 68 can flow via openings 75 in the collar 8 and the throughflow openings 73 in the guide membrane 11 to the valve seat 32, from where it reaches the collecting space 54 when the valve part 30 is lifted off the valve seat 32 and there via the Swirl channels 59 is metered.
  • the unmeasured part of the fuel can flow via the transverse bores 52 into the blind bore 49 of the valve part 30 and from there via the inner bore 40 or the longitudinal bore 45 of the slide member 41 and the transverse bores 46 into the part of the interior 5 above the shell core 7 with the receptacle of the heat generated on the magnetic part and flow from there via the drain openings 70 and the second annular groove 65 into the fuel return line 67.
  • the parts that have remained the same and function the same as in FIG. 1 are identified by the same reference numerals.
  • the flat armature 29 is of the same design as the valve part 30 and is ge in the same way through a guide membrane 11 leads, as in the embodiment of Figure 1. This area of the fuel injection valve was therefore not shown again in section.
  • the slide member 41 has on its side facing the flat armature a portion 78 projecting partially into the shell core 7, which has a smaller diameter than the inner bore 40 of the shell core and between and the inner bore 40 of the shell core 7, an annular channel 79 is formed, via which the non-metered fuel can flow from the magnetic part into the part of the interior 5 above the shell core 7 while absorbing heat.
  • the compression spring 39 is supported on the section 78 of the slide member 41 with its end facing away from the flat anchor.
  • the sealing of the contact pins 22 in the through hole 25 of the housing base 2 can be done by a sealing ring 80.
  • the contact pins 22 and the guide stub 3 can be enclosed by a cap 81 made of insulating and elastic material such as rubber or plastic, which has latching elements 82 which snap into place on the guide stub 3 and from which the contact pins 22 protrude.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Magnetically Actuated Valves (AREA)
  • Fuel-Injection Apparatus (AREA)
EP81107254A 1980-12-12 1981-09-15 Soupape actionnable électromagnétiquement, en particulier soupape d'injection de carburant pour une installation d'injection de carburant Expired EP0054108B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3046889 1980-12-12
DE19803046889 DE3046889A1 (de) 1980-12-12 1980-12-12 Elektromagnetisch betaetigbares ventil, insbesondere kraftstoffeinspritzventil fuer kraftstoffeinspritzanlagen

Publications (3)

Publication Number Publication Date
EP0054108A2 true EP0054108A2 (fr) 1982-06-23
EP0054108A3 EP0054108A3 (en) 1983-10-05
EP0054108B1 EP0054108B1 (fr) 1986-01-29

Family

ID=6119024

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81107254A Expired EP0054108B1 (fr) 1980-12-12 1981-09-15 Soupape actionnable électromagnétiquement, en particulier soupape d'injection de carburant pour une installation d'injection de carburant

Country Status (6)

Country Link
US (1) US4416423A (fr)
EP (1) EP0054108B1 (fr)
JP (2) JPS57124174A (fr)
AU (1) AU547198B2 (fr)
BR (1) BR8108053A (fr)
DE (2) DE3046889A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2505971A1 (fr) * 1981-05-13 1982-11-19 Bosch Gmbh Robert Soupape a commande electro-magnetique, en particulier soupape d'injection de carburant pour les installations d'injection de carburant
FR2515741A1 (fr) * 1981-11-05 1983-05-06 Bosch Gmbh Robert Soupape a commande electromagnetique notamment soupape d'injection de carburant
GB2170270A (en) * 1985-01-25 1986-07-30 Bosch Gmbh Robert Electromagnetic fuel injection valve
WO1997038798A1 (fr) * 1996-04-12 1997-10-23 Nordson Corporation Distributeur de fluide a vitesse elevee dote d'une vanne electromecanique
EP1760308A2 (fr) * 2005-08-31 2007-03-07 Denso Corporation Électrovanne

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3116954C2 (de) * 1981-04-29 1993-10-21 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen
DE3120160A1 (de) * 1981-05-21 1982-12-09 Robert Bosch Gmbh, 7000 Stuttgart Elektromagnetisch betaetigbares ventil, insbesondere kraftstoffeinspritzventil fuer kraftstoffeinspritzan lagen
DE3121572A1 (de) * 1981-05-30 1982-12-16 Robert Bosch Gmbh, 7000 Stuttgart "einspritzventil"
DE3207918A1 (de) * 1982-03-05 1983-09-15 Robert Bosch Gmbh, 7000 Stuttgart Elektromagnetisch betaetigbares ventil
DE3229716C2 (de) * 1982-08-10 1995-01-26 Bosch Gmbh Robert Kraftstoffeinspritzvorrichtung
DE3230844A1 (de) * 1982-08-19 1984-02-23 Robert Bosch Gmbh, 7000 Stuttgart Elektromagnetisch betaetigbares ventil
JPS59203866A (ja) * 1983-05-04 1984-11-19 Nippon Denso Co Ltd 電磁式燃料噴射弁
JPS611860A (ja) * 1984-06-15 1986-01-07 Automob Antipollut & Saf Res Center 電磁式燃料噴射弁の組立方法
US4951878A (en) * 1987-11-16 1990-08-28 Casey Gary L Pico fuel injector valve
IT1219397B (it) * 1988-06-23 1990-05-11 Weber Srl Valvola per la dosatura e la polverizzazione di carburante ad azionamento elettromagnetico provvista di doppia serie di fori laterali di ingresso del carburante
JPH08210217A (ja) * 1995-02-03 1996-08-20 Zexel Corp 電磁式燃料噴射弁
WO2000012892A1 (fr) 1998-08-27 2000-03-09 Robert Bosch Gmbh Soupape d'injection de carburant
US6776353B2 (en) 2001-12-17 2004-08-17 Siemens Vdo Automotive Corporation Fuel injector valve seat assembly with radially outward leading fuel flow passages feeding multi-hole orifice disk

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1596356A (fr) * 1968-01-30 1970-06-15
DE2246574A1 (de) * 1972-09-22 1974-03-28 Bosch Gmbh Robert Membranmagnetventil
US3937242A (en) * 1972-09-22 1976-02-10 Robert Bosch G.M.B.H. Pressure control device for controlling the flow of a fluid medium
DE2739085A1 (de) * 1977-08-30 1979-03-08 Technologieforschung Gmbh Magnetventil
GB2058466A (en) * 1979-09-08 1981-04-08 Bosch Gmbh Robert Electromagnetic fuel injection valve

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2130666A (en) * 1932-01-28 1938-09-20 Carter Carburetor Corp Fuel supply device for internal combustion engines
US3001757A (en) * 1958-04-09 1961-09-26 Chrysler Corp Magnetic fuel injection nozzle
GB1231631A (fr) * 1968-04-02 1971-05-12
DE2035248C3 (de) * 1970-07-16 1978-11-09 Messerschmitt-Boelkow-Blohm Gmbh, 8000 Muenchen Elektrofluidische Schaltvorrichtung mit einer frei beweglichen Folie in einer Kammer
JPS474460U (fr) * 1971-02-04 1972-09-11
DE2501283A1 (de) * 1975-01-15 1976-07-22 Bosch Gmbh Robert Einspritzventil
US4196751A (en) * 1976-01-15 1980-04-08 Johnson Controls, Inc. Electric to fluid signal valve unit
DE2936853A1 (de) * 1979-09-12 1981-04-02 Robert Bosch Gmbh, 7000 Stuttgart Elektromagnetisch betaetigbares ventil
US4310123A (en) * 1980-07-21 1982-01-12 General Motors Corporation Electromagnetic fuel injector with adjustable armature spring

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1596356A (fr) * 1968-01-30 1970-06-15
DE2246574A1 (de) * 1972-09-22 1974-03-28 Bosch Gmbh Robert Membranmagnetventil
US3937242A (en) * 1972-09-22 1976-02-10 Robert Bosch G.M.B.H. Pressure control device for controlling the flow of a fluid medium
DE2739085A1 (de) * 1977-08-30 1979-03-08 Technologieforschung Gmbh Magnetventil
GB2058466A (en) * 1979-09-08 1981-04-08 Bosch Gmbh Robert Electromagnetic fuel injection valve

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2505971A1 (fr) * 1981-05-13 1982-11-19 Bosch Gmbh Robert Soupape a commande electro-magnetique, en particulier soupape d'injection de carburant pour les installations d'injection de carburant
FR2515741A1 (fr) * 1981-11-05 1983-05-06 Bosch Gmbh Robert Soupape a commande electromagnetique notamment soupape d'injection de carburant
GB2170270A (en) * 1985-01-25 1986-07-30 Bosch Gmbh Robert Electromagnetic fuel injection valve
WO1997038798A1 (fr) * 1996-04-12 1997-10-23 Nordson Corporation Distributeur de fluide a vitesse elevee dote d'une vanne electromecanique
US5791531A (en) * 1996-04-12 1998-08-11 Nordson Corporation High speed fluid dispenser having electromechanical valve
EP1760308A2 (fr) * 2005-08-31 2007-03-07 Denso Corporation Électrovanne
EP1760308A3 (fr) * 2005-08-31 2007-05-09 Denso Corporation Électrovanne
US7571891B2 (en) 2005-08-31 2009-08-11 Denso Corporation Solenoid valve

Also Published As

Publication number Publication date
JPH0226113B2 (fr) 1990-06-07
JPH02256980A (ja) 1990-10-17
EP0054108B1 (fr) 1986-01-29
DE3173633D1 (en) 1986-03-13
AU7686781A (en) 1982-06-17
AU547198B2 (en) 1985-10-10
US4416423A (en) 1983-11-22
JPS57124174A (en) 1982-08-02
DE3046889A1 (de) 1982-07-15
DE3046889C2 (fr) 1988-06-01
EP0054108A3 (en) 1983-10-05
BR8108053A (pt) 1982-09-21

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