EP0200865A1 - Soupape d'injection - Google Patents

Soupape d'injection Download PDF

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Publication number
EP0200865A1
EP0200865A1 EP86102633A EP86102633A EP0200865A1 EP 0200865 A1 EP0200865 A1 EP 0200865A1 EP 86102633 A EP86102633 A EP 86102633A EP 86102633 A EP86102633 A EP 86102633A EP 0200865 A1 EP0200865 A1 EP 0200865A1
Authority
EP
European Patent Office
Prior art keywords
fuel
injection valve
armature
valve
injection
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.)
Withdrawn
Application number
EP86102633A
Other languages
German (de)
English (en)
Inventor
Eckhart Kern
Reiner Weingärtner
Jürgen Luft
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
Publication of EP0200865A1 publication Critical patent/EP0200865A1/fr
Withdrawn legal-status Critical Current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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
    • F02M69/54—Arrangement of fuel pressure regulators
    • 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
    • F02M51/061—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
    • F02M51/0667—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 acting as a valve or having a short valve body attached thereto
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/007—Venting 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
    • F02M57/00—Fuel-injectors combined or associated with other devices
    • 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
    • F02M61/162—Means to impart a whirling motion to fuel upstream or near discharging orifices

Definitions

  • the invention relates to an injection valve, in particular for fuel injection systems of internal combustion engines, with a magnetic winding, a magnetic core, an armature which is connected to a movable valve part which cooperates with a valve seat, and with means for generating a swirl when the fuel is to be injected .
  • Electromagnetically actuated injection valves are already known, in which means are provided for generating a swirl in the fuel to be injected. These means consist in that oblique bores are provided in the nozzle body forming the valve seat, which impart a tangential speed component to the escaping fuel.
  • the object of the present invention is to improve the atomization of the fuel and at the same time to prevent contamination of means for generating a swirl.
  • valve is part of a fuel circuit and that the means for generating the swirl are arranged such that they are in the fuel circuit and fuel flows through them even when the injection valve is closed.
  • This inventive design of the injection valve ensures that a swirl movement is constantly maintained by the continuous flow and does not have to be built up only when the valve is opened. There is also the advantage that contamination of the swirl channels is avoided.
  • a magnetic core consisting of an upper core part 2 and a lower core part 3 is held concentrically in a cup-shaped housing 1.
  • the upper core part 2 is designed in the manner of a shell core made of soft magnetic material and is centered at the top by a shoulder 4 within the housing 1. While the lower centering of the upper core part 2 and the lower core part 3 is carried out by a plurality of beads 5 distributed around the circumference of the housing 1.
  • Both the housing 1 and the upper core part have a flange-like edge.
  • all of the inner parts are first inserted into the valve and then the flange-like edges of the upper core part 2 and the housing are fixed by flanging the cover 11 and thus the injection valve is closed.
  • the magnetic coil 7 is arranged on the coil carrier 6, preferably made of plastic, within the upper core part.
  • the electrical connections 8 of the magnetic coil are guided to the outside in a tubular continuation 9 of the coil carrier 6, an annular seal 10 being provided between the cover 11 of the injection valve and the upper core part 2.
  • a guide bushing 12 made of non-magnetizable material for the armature 13 is inserted into a cylindrical bore of the lower core part 3.
  • the armature 13 consists of a substantially cylindrical part 14, which ver on the circumference has divided flats 15 so that fuel can flow past the anchor, as will be described in detail later.
  • the non-flattened parts 16 of the peripheral surface serve as sliding surfaces of the armature.
  • At the lower end of the armature is the movable valve part 17, which is conical.
  • the conical part of the movable valve part acts together with the valve seat 18 which, like the guide sleeve 12, is inserted concentrically into the lower core part 3.
  • the armature 13 is pressed against the valve seat 18 by a compression spring 19.
  • the compression spring 19 is supported on a bearing part 21 which is pressed into a central bore 20 of the upper core part 2.
  • the lid 11 is formed in the middle part as a housing for a further compression spring 22, which is part of a pressure regulator, which further consists of a membrane 23 and two disks 24, 25, which together with a sleeve 26 form a valve.
  • the fuel supplied at 27 initially reaches the outer space 28 of the injection valve. From there it flows through the swirl channels 29 into the inner space of the lower core part 3.
  • a swirl is already generated in this way, in contrast to the known injection valves with swirl devices.
  • the fuel is guided past the armature through bores 30, 31 in the inner part 32 of the upper core part 2 and passes through the intermediate space 37 between the coil carrier 6 and the inner core part 32 and through a throttle point 33 to the bore 34, which forms the return of the fuel.
  • paragraph 4 of the upper core part is formed obliquely.
  • the vapor bubbles then migrate via the channel 36 to the pressure regulator without getting into the other cavities of the injection valve and are fed from there to the fuel return.
  • the armature 13 moves upwards under the action of the magnetic lines of force.
  • a ring 37 made of non-magnetic material is provided so that it does not stick to the inner part 32 of the upper core part 2 after the current has been switched off again.
  • FIG. 2 shows a cross section through the injection valve according to FIG. 1 in the plane labeled AB in FIG. 1.
  • the lower core part 3 can be seen with four swirl channels which open tangentially into the inner cavity of the lower core part.
  • the area of the throttle point 33 can also be matched to the area of the spraying point in such a way that there is an optimal pressure at the spraying point for spraying.
  • a valve is shown in FIG. 3, which also has a flat armature in contrast to the injection valve according to FIG. 1.
  • the cover 11, the pressure regulator 22, 23, 24, 25, 26, the coil support 6 and the magnet coil 7 and their parts 8, 9, 10 for current supply are constructed in accordance with the injection valve according to FIG. 1 and therefore do not need to be explained again. to become.
  • 3 is also cup-shaped and has a concentric opening 41 in the base plate. In the lower part of the housing wall there are beads 42 for centering the parts described below.
  • the magnetic core 43 is made of soft magnetic material in the form of a shell core and has a shoulder 44 in its upper part for centering. The lower part is centered by the beads 42.
  • a non-magnetizable circular ring element 46 is inserted, which in the axial direction extends beyond the magnetic core 43 so that the armature 47 does not "stick" to the magnetic core 43.
  • the anchor is stamped in the form shown in FIG. 3 and has a multiplicity of bores in order to facilitate the passage of the fuel.
  • the spherical segment-shaped movable valve part 48 is connected to the armature 47 in a form-fitting manner. It has a bore 49 in which a compression spring 50 engages. On the side facing away from the movable valve part, the compression spring is mounted in a part 52 which is pressed into a bore 51 of the inner core part. The spring 50 presses the movable valve member 48 against a seat member 53 which is made of hard material to reduce wear.
  • a membrane 54 used to center the movable valve part 48 is clamped on its outer edge between a spacer ring 55 and a disk-shaped element 56. Both the membrane 54, as well as the spacer ring 55 and the element 56 are centered by the beads 42 during the assembly of the injection valve.
  • the disc-shaped element 56 serves to separate the outer cavity 57 from the inner cavity 58 of the valve. Swirl grooves 59 connect the two cavities to one another.
  • the fuel led from the inlet 60 through the outer cavity 57 passes through the swirl grooves 49 and generates a swirl around the movable valve part 48. Fuel then flows in the internal cavity 58 around the solenoid through the throttle place 61 and the bore 62 to the return 63.
  • the armature 47 By supplying electric current to the solenoid 7, the armature 47 is moved in the direction of the magnetic core 43 against the tension of the compression spring 50. This opens the ejection opening. The fuel in the swirl is atomized out of the swirl immediately at the beginning of the injection process.
  • FIG. 4 shows a cross section in the plane drawn with AB in FIG. 3.
  • Four swirl grooves 49 are arranged in the disc-shaped element 56.
  • the housing 40 is provided with centering beads 42.
  • the section in the plane CD shown in FIG. 5 (FIG. 3) shows a part of the housing 40 and the membrane 54.

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)
EP86102633A 1985-05-07 1986-02-28 Soupape d'injection Withdrawn EP0200865A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3516337 1985-05-07
DE19853516337 DE3516337A1 (de) 1985-05-07 1985-05-07 Einspritzventil

Publications (1)

Publication Number Publication Date
EP0200865A1 true EP0200865A1 (fr) 1986-11-12

Family

ID=6270011

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86102633A Withdrawn EP0200865A1 (fr) 1985-05-07 1986-02-28 Soupape d'injection

Country Status (3)

Country Link
EP (1) EP0200865A1 (fr)
JP (1) JPS61255267A (fr)
DE (1) DE3516337A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988003226A1 (fr) * 1986-10-30 1988-05-05 Allied Corporation Injecteur muni d'une chambre de tourbillonnement
FR2616485A1 (fr) * 1987-06-09 1988-12-16 Weber Srl Valve d'atomisation et dosage de carburant pour un dispositif d'injection de carburant d'un moteur a combustion interne
US4805837A (en) * 1986-10-30 1989-02-21 Allied Corporation Injector with swirl chamber return
EP0536774A1 (fr) * 1991-10-11 1993-04-14 WEBER S.r.l. Soupape de pulvérisation et de dosage de combustible actionnée électromagnétiquement et de dimensions très réduites
WO1999023383A1 (fr) * 1997-11-03 1999-05-14 Slowik Guenter Procede et gicleur pour l'injection de carburant dans la chambre d'explosion d'un moteur a combustion interne
WO2003027482A1 (fr) * 2001-09-05 2003-04-03 Robert Bosch Gmbh Soupape d'injection de carburant
WO2009034338A3 (fr) * 2007-09-14 2009-06-04 Scion Sprays Ltd Moteur à combustion interne à système d'injection de carburant

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0634609Y2 (ja) * 1988-09-14 1994-09-07 株式会社ユニシアジェックス 内燃機関用電磁式燃料噴射弁
DE102012209229A1 (de) 2012-05-31 2013-12-05 Robert Bosch Gmbh Kraftstoffinjektor

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1408212A (fr) * 1963-05-01 1965-08-13 Ass Eng Ltd Clapets d'injection de carburant
FR1535190A (fr) * 1966-08-27 1968-08-02 Installation d'injection de carburant pour moteurs à combustion interne à explosion, et moteurs équipés de ladite installation
FR2241008A1 (en) * 1973-08-17 1975-03-14 Tech Haute Precision Electro-magnetic petrol injector with rapid action - has accurately controlled annular fuel passage
FR2267458A1 (fr) * 1974-04-13 1975-11-07 Daimler Benz Ag
FR2417646A1 (fr) * 1978-02-18 1979-09-14 Bosch Gmbh Robert Soupape electro-magnetique d'injection de carburant pour moteurs a combustion interne
US4292947A (en) * 1978-11-07 1981-10-06 Kabushiki Kaisha Toyota Chuo Kenkyusho Spill type swirl injector
DE3111938A1 (de) * 1981-03-26 1982-10-07 Robert Bosch Gmbh, 7000 Stuttgart Elektromagnet
GB2107784A (en) * 1981-10-16 1983-05-05 Bosch Gmbh Robert Fuel injector installation in an air intake throttle body
DE3148978A1 (de) * 1981-12-10 1983-06-23 Aisan Industry Co., Ltd., Obu, Aichi Kraftstoffzufuehrungseinrichtung fuer brennkraftmaschinen
DE3303507A1 (de) * 1982-02-18 1983-08-25 Aisan Kogyo K.K., Obu, Aichi Elektromagnetischer brennstoff-injektor

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1408212A (fr) * 1963-05-01 1965-08-13 Ass Eng Ltd Clapets d'injection de carburant
FR1535190A (fr) * 1966-08-27 1968-08-02 Installation d'injection de carburant pour moteurs à combustion interne à explosion, et moteurs équipés de ladite installation
FR2241008A1 (en) * 1973-08-17 1975-03-14 Tech Haute Precision Electro-magnetic petrol injector with rapid action - has accurately controlled annular fuel passage
FR2267458A1 (fr) * 1974-04-13 1975-11-07 Daimler Benz Ag
FR2417646A1 (fr) * 1978-02-18 1979-09-14 Bosch Gmbh Robert Soupape electro-magnetique d'injection de carburant pour moteurs a combustion interne
US4292947A (en) * 1978-11-07 1981-10-06 Kabushiki Kaisha Toyota Chuo Kenkyusho Spill type swirl injector
DE3111938A1 (de) * 1981-03-26 1982-10-07 Robert Bosch Gmbh, 7000 Stuttgart Elektromagnet
GB2107784A (en) * 1981-10-16 1983-05-05 Bosch Gmbh Robert Fuel injector installation in an air intake throttle body
DE3148978A1 (de) * 1981-12-10 1983-06-23 Aisan Industry Co., Ltd., Obu, Aichi Kraftstoffzufuehrungseinrichtung fuer brennkraftmaschinen
DE3303507A1 (de) * 1982-02-18 1983-08-25 Aisan Kogyo K.K., Obu, Aichi Elektromagnetischer brennstoff-injektor

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988003226A1 (fr) * 1986-10-30 1988-05-05 Allied Corporation Injecteur muni d'une chambre de tourbillonnement
US4805837A (en) * 1986-10-30 1989-02-21 Allied Corporation Injector with swirl chamber return
FR2616485A1 (fr) * 1987-06-09 1988-12-16 Weber Srl Valve d'atomisation et dosage de carburant pour un dispositif d'injection de carburant d'un moteur a combustion interne
EP0536774A1 (fr) * 1991-10-11 1993-04-14 WEBER S.r.l. Soupape de pulvérisation et de dosage de combustible actionnée électromagnétiquement et de dimensions très réduites
US5263649A (en) * 1991-10-11 1993-11-23 Weber S.R.L. Electromagetically actuated fuel atomising and metering valve of very small dimensions
WO1999023383A1 (fr) * 1997-11-03 1999-05-14 Slowik Guenter Procede et gicleur pour l'injection de carburant dans la chambre d'explosion d'un moteur a combustion interne
US6311900B1 (en) * 1997-11-03 2001-11-06 SLOWIK GüNTER Procedure and injection nozzle for injecting fuel, in particular into the combustion chamber of an internal combustion engine
WO2003027482A1 (fr) * 2001-09-05 2003-04-03 Robert Bosch Gmbh Soupape d'injection de carburant
US7093779B2 (en) 2001-09-05 2006-08-22 Robert Bosch Gmbh Fuel injection valve
WO2009034338A3 (fr) * 2007-09-14 2009-06-04 Scion Sprays Ltd Moteur à combustion interne à système d'injection de carburant
US8479708B2 (en) 2007-09-14 2013-07-09 Robert Bosch Gmbh Internal combustion engine with a fuel injection system

Also Published As

Publication number Publication date
DE3516337A1 (de) 1986-11-13
JPS61255267A (ja) 1986-11-12

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Inventor name: KERN, ECKHART

Inventor name: LUFT, JUERGEN

Inventor name: WEINGAERTNER, REINER