EP0222131A2 - Soupape électromagnétique d'injection de combustible - Google Patents

Soupape électromagnétique d'injection de combustible Download PDF

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Publication number
EP0222131A2
EP0222131A2 EP86113487A EP86113487A EP0222131A2 EP 0222131 A2 EP0222131 A2 EP 0222131A2 EP 86113487 A EP86113487 A EP 86113487A EP 86113487 A EP86113487 A EP 86113487A EP 0222131 A2 EP0222131 A2 EP 0222131A2
Authority
EP
European Patent Office
Prior art keywords
fuel injection
valve
electromagnetically actuated
injection valve
valve needle
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
EP86113487A
Other languages
German (de)
English (en)
Other versions
EP0222131B1 (fr
EP0222131A3 (en
Inventor
Andreas Sausner
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.)
Mannesmann VDO AG
Original Assignee
Mannesmann VDO AG
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 Mannesmann VDO AG filed Critical Mannesmann VDO AG
Priority to AT86113487T priority Critical patent/ATE49033T1/de
Publication of EP0222131A2 publication Critical patent/EP0222131A2/fr
Publication of EP0222131A3 publication Critical patent/EP0222131A3/de
Application granted granted Critical
Publication of EP0222131B1 publication Critical patent/EP0222131B1/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
    • F02M51/0664—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
    • F02M51/0675—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 valve body having cylindrical guiding or metering portions, e.g. with fuel passages
    • F02M51/0678—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 valve body having cylindrical guiding or metering portions, e.g. with fuel passages all portions having fuel passages, e.g. flats, grooves, diameter reductions
    • 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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
    • F02M61/12—Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies
    • 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 fuel injection valve for injection systems of internal combustion engines with an electromagnet, an armature and a closing member, which is operatively connected to a spring and the armature.
  • the closing member is designed as a valve needle, which is guided axially in a correspondingly designed bushing and has a conical shape at its end directed towards the injection opening, so that it lies sealingly on the valve seat when the fuel injection valve is closed. To do this, it is pressed by a corresponding spring in the direction of the valve seat. When the electromagnet is energized, the valve needle is lifted off and thus releases the spray opening.
  • the object of the present invention is to provide an electromagnetically actuated fuel injection valve, in which the demands on the accuracy of the machining of the individual parts are not so high and thus economical production is given.
  • the object of the invention is achieved in that a closing member is connected to a valve needle in such a way that it can be displaced perpendicular to the axis of the valve needle.
  • the inventive design of a fuel injection valve enables self-centering of the closing member, so that deviations of the valve needle from its axial position are much less critical than in known fuel injection valves.
  • the closing member is displaceable when overcoming static friction, which ensures that the closing member does not get into a different position each time the valve is opened and has to be centered again when the valve is closed. Centering then takes place only when the valve is started up for the first time or in the event of long-term changes, for example due to wear.
  • the closing member is designed in the form of a spherical segment and has a cavity into which a stamp-shaped end of the valve needle projects.
  • the end surface of the valve needle is flat and lies on a flat surface which delimits the cavity.
  • both surfaces are preferably located approximately in the plane of the valve seat when the fuel injection valve is closed.
  • a further development of the invention is characterized in that the opening of the cavity has a smaller diameter than the cavity itself and that the stamp-shaped end of the valve needle has a diameter which is smaller than the diameter of the cavity but larger than the diameter of the opening.
  • a spring element is then preferably inserted between the stamp-shaped end of the valve needle and the part of the closing element which forms the opening of the cavity.
  • the closing member consists of two parts, one part of which is approximately hemispherical and faces the valve seat and the other part, which is arranged coaxially with the first part, the opening tion of the cavity.
  • the connection point of the two parts preferably has a centering edge.
  • a tube 1, a flange-like part of the tube 1 and the housing 3 form a magnetically conductive core for the magnet coil 4, which is arranged on a winding body 5.
  • Seals 6, 7 are provided between the winding body 5 on the one hand and the tube 1 and the housing 3 on the other hand.
  • the tube 1 also serves as a connection for the fuel line.
  • a plastic body 9 forms, together with a contact 10, the electrical connection for the magnet coil 4.
  • a valve needle 12 is mounted in a guide part 11 and is pressed with its lower part against the valve seat 14 by a coil spring 13.
  • the valve seat 14 is part of a spray opening 15 provided in the guide part 11, which continues in an opening of the cap 16.
  • An armature 17 is provided at the end of the valve needle 12 opposite the spray opening 15, which armature is drawn against the spring force in the direction of the tube 1 when the solenoid 4 is energized and thus opens the valve.
  • a closing member 18 is now connected to the valve needle 12 in such a way that it can be displaced perpendicular to the axis of the valve needle 12.
  • a hemispherical closing element 18 is provided in the fuel injection valve according to FIG. 1, which is fastened to the valve needle 12 in the manner explained in connection with FIG. 2.
  • Fig. 2 shows on a larger scale than Fig. 1 a section through the closing member 18.
  • the closing member 18 consists of a substantially hemispherical part 19 and a part 20.
  • the closing member 18 forms a cavity 21 in which the valve needle 12 with its stamped end 22 protrudes. Both the diameter of the cavity 21 and the diameter of the opening 23 in the part 20 are chosen so large that the closing member 18 can move relative to the axis of the valve needle 12 as far as is necessary with regard to the tolerances of the valve needle 12 and their storage .
  • An annular spring 24 ensures that the end surface 25 of the valve needle is pressed against the surface 26 of the hemispherical part 19.
  • the pressure force is so great that the closing member 18 does not move with respect to the valve needle 12 when the valve is open.
  • the adhesive force generated with the pressure is therefore greater than the forces which occur when the valve is open, for example due to vibrations, and which could cause a shift.
  • the closing element is therefore not readjusted with every closing operation, but only when it is necessary. An initial adjustment is therefore carried out with the first start-up, for example during the test after the fuel injector has been installed. Further adjustments are only made if changes occur during the service life of the fuel injector.
  • FIG. 3 the closing member 18, the valve block 14 and the valve needle 12 are shown for different, each greatly exaggerated storage of the valve needle axis.
  • the valve needle axis is displaced parallel to its nominal position.
  • the arrangement is shown in a phase of movement of the closing process in which the closing element 18 not lying in the axis touches the valve seat 14 on one side.
  • the closing member 18 then slides into the valve seat 14 with simultaneous displacement relative to the valve needle axis and is thus adjusted.
  • valve needle axis is tilted, which in itself could be compensated for by the hemispherical closing member 18.
  • the tilting did not take place around the center of the ball, there is at the same time a displacement of the valve needle axis from the valve axis in the region of the closing member. This is compensated for by the displacement of the closing member 18 on the valve needle 12.

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)
EP86113487A 1985-11-04 1986-10-01 Soupape électromagnétique d'injection de combustible Expired EP0222131B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86113487T ATE49033T1 (de) 1985-11-04 1986-10-01 Elektromagnetisch betaetigbares kraftstoffeinspritzventil.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3539057 1985-11-04
DE19853539057 DE3539057A1 (de) 1985-11-04 1985-11-04 Elektromagnetisch betaetigbares kraftstoffeinspritzventil

Publications (3)

Publication Number Publication Date
EP0222131A2 true EP0222131A2 (fr) 1987-05-20
EP0222131A3 EP0222131A3 (en) 1987-11-11
EP0222131B1 EP0222131B1 (fr) 1989-12-27

Family

ID=6285117

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86113487A Expired EP0222131B1 (fr) 1985-11-04 1986-10-01 Soupape électromagnétique d'injection de combustible

Country Status (6)

Country Link
US (1) US4759331A (fr)
EP (1) EP0222131B1 (fr)
JP (1) JPS62107267A (fr)
AT (1) ATE49033T1 (fr)
BR (1) BR8605409A (fr)
DE (2) DE3539057A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2695220A1 (fr) * 1992-08-25 1994-03-04 Israel Defence Régulateur d'écoulement de fluide à orifice à aiguille.
WO2008007209A2 (fr) * 2006-07-11 2008-01-17 Bernhard Frey Système cylindre-piston pour pompe hydraulique ou moteur hydraulique
CN102748179A (zh) * 2012-08-01 2012-10-24 袁辉 喷油器

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3843862A1 (de) * 1988-12-24 1990-06-28 Bosch Gmbh Robert Elektromagnetisch betaetigbares ventil
US5217200A (en) * 1990-09-04 1993-06-08 South Bend Controls, Inc. Solenoid valve
AU653181B2 (en) * 1990-11-19 1994-09-22 Mic Co., Ltd. Valve and solenoid valve operated by very small force
GB9116078D0 (en) * 1991-07-25 1991-09-11 Lucas Ind Plc Pressure regulator
US5201299A (en) * 1991-12-11 1993-04-13 Southwest Research Institute Rotary gaseous fuel injector
DE4302668A1 (de) * 1993-01-30 1994-08-04 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen
DE19532865A1 (de) * 1995-09-06 1997-03-13 Bosch Gmbh Robert Brennstoffeinspritzventil
US6334576B1 (en) 2000-06-30 2002-01-01 Siemens Automotive Corporation Fuel injector having a ball seat with multiple tip geometry
US6471181B2 (en) * 2001-01-11 2002-10-29 Vat Holding Ag Suspension of a valve plate of a vacuum valve
US7854256B2 (en) * 2001-07-26 2010-12-21 Dana Canada Corporation Plug bypass valves and heat exchangers
US9557749B2 (en) 2001-07-30 2017-01-31 Dana Canada Corporation Valves for bypass circuits in heat exchangers
US8960269B2 (en) 2001-07-30 2015-02-24 Dana Canada Corporation Plug bypass valve and heat exchanger
CA2459088C (fr) * 2004-02-27 2012-08-21 Dana Canada Corporation Electrovanne etanche
DE112013002728T5 (de) 2012-05-31 2015-03-19 Dana Canada Corporation Wärmetauscheranordnungen mit integriertem Ventil
SG11201502160RA (en) * 2012-10-05 2015-05-28 Nestec Sa Check valve, injection assembly, and beverage preparation machine.
US10900557B2 (en) 2018-11-13 2021-01-26 Dana Canada Corporation Heat exchanger assembly with integrated valve with pressure relief feature for hot and cold fluids

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1942417A (en) * 1929-04-17 1934-01-09 John J Ferlin Valve
FR1474981A (fr) * 1966-02-16 1967-03-31 Perfectionnements aux électrovannes à gaz
DE2726308A1 (de) * 1977-06-10 1978-12-14 Bosch Gmbh Robert Kraftstoffeinspritzduese
GB2080415A (en) * 1980-07-21 1982-02-03 Gen Motors Corp Electromagnetic fuel injector
EP0091861A1 (fr) * 1982-04-02 1983-10-19 Allied Corporation Soupape de contrôle électrique

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US293355A (en) * 1884-02-12 Stop-valve
US391445A (en) * 1888-10-23 Valve mechanism
US664368A (en) * 1897-10-12 1900-12-18 Theodore H Durst Valve.
US1626532A (en) * 1923-04-04 1927-04-26 Lunkenheimer Co Valve
US2283076A (en) * 1940-10-01 1942-05-12 Walworth Patents Inc Valve
US2752937A (en) * 1950-07-08 1956-07-03 Robert H Hieger Carburetor float valve
BE650162A (fr) * 1963-07-06 1900-01-01 Danfoss As
DE1957112B2 (de) * 1968-11-29 1972-01-27 Modrzanske strojirny, N P , Prag Verbindung eines ventilkegels mit seiner ventilspindel
US3558098A (en) * 1969-06-02 1971-01-26 Robertshaw Controls Co Valve construction menas
US3936030A (en) * 1972-05-08 1976-02-03 Itt Industries, Inc. Electromagnetic valve
SU723264A1 (ru) * 1974-10-28 1980-03-25 Romanenko Nikolaj T Электромеханический привод
US4218021A (en) * 1977-10-03 1980-08-19 General Motors Corporation Electromagnetic fuel injector
SU885678A1 (ru) * 1978-06-19 1981-11-30 Предприятие П/Я А-3531 Вакуумный клапан

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1942417A (en) * 1929-04-17 1934-01-09 John J Ferlin Valve
FR1474981A (fr) * 1966-02-16 1967-03-31 Perfectionnements aux électrovannes à gaz
DE2726308A1 (de) * 1977-06-10 1978-12-14 Bosch Gmbh Robert Kraftstoffeinspritzduese
GB2080415A (en) * 1980-07-21 1982-02-03 Gen Motors Corp Electromagnetic fuel injector
EP0091861A1 (fr) * 1982-04-02 1983-10-19 Allied Corporation Soupape de contrôle électrique

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2695220A1 (fr) * 1992-08-25 1994-03-04 Israel Defence Régulateur d'écoulement de fluide à orifice à aiguille.
WO2008007209A2 (fr) * 2006-07-11 2008-01-17 Bernhard Frey Système cylindre-piston pour pompe hydraulique ou moteur hydraulique
WO2008007209A3 (fr) * 2006-07-11 2008-02-28 Bernhard Frey Système cylindre-piston pour pompe hydraulique ou moteur hydraulique
US8794938B2 (en) 2006-07-11 2014-08-05 Bernhard Frey Cylinder piston arrangement for a fluid pump or a fluid motor
CN102748179A (zh) * 2012-08-01 2012-10-24 袁辉 喷油器

Also Published As

Publication number Publication date
EP0222131B1 (fr) 1989-12-27
EP0222131A3 (en) 1987-11-11
DE3539057A1 (de) 1987-05-14
BR8605409A (pt) 1987-08-11
US4759331A (en) 1988-07-26
JPS62107267A (ja) 1987-05-18
DE3667814D1 (de) 1990-02-01
ATE49033T1 (de) 1990-01-15

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