EP1559906A2 - Buse d'injection de carburant - Google Patents

Buse d'injection de carburant Download PDF

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Publication number
EP1559906A2
EP1559906A2 EP05001507A EP05001507A EP1559906A2 EP 1559906 A2 EP1559906 A2 EP 1559906A2 EP 05001507 A EP05001507 A EP 05001507A EP 05001507 A EP05001507 A EP 05001507A EP 1559906 A2 EP1559906 A2 EP 1559906A2
Authority
EP
European Patent Office
Prior art keywords
fuel injection
valve
injection valve
groove
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.)
Withdrawn
Application number
EP05001507A
Other languages
German (de)
English (en)
Other versions
EP1559906A3 (fr
Inventor
Guenther Hohl
Detlef Nowak
Marco Vorbach
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 EP1559906A2 publication Critical patent/EP1559906A2/fr
Publication of EP1559906A3 publication Critical patent/EP1559906A3/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Withdrawn legal-status Critical Current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
    • 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
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • 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
    • F02M61/08—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 the valves opening in direction of fuel flow
    • 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
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F02M61/1873—Valve seats or member ends having circumferential grooves or ridges, e.g. toroidal
    • 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
    • F02M2200/16—Sealing of fuel injection apparatus not otherwise provided for
    • 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
    • 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

Definitions

  • the invention is based on a fuel injection valve according to the preamble of the main claim.
  • valve closing body acts with a valve seat body to a sealing seat together.
  • the Spray opening is formed ringpaltförmig.
  • the Tear-off edge protrudes unprotected from combustion chamber gases directly into the combustion chamber.
  • a disadvantage of the above-mentioned document known fuel injection valve is in particular that in the area of the spoiler edge, in particular in the Spray opening, can easily form deposits.
  • the Abspritzgeometrie of the sprayed Fuel is affected unfavorably.
  • the fuel injection valve according to the invention with the characterizing features of the main claim has In contrast, the advantage that the formation of disturbing Deposits in the area of the injection opening by simple Medium is greatly reduced.
  • valve closing body widens in Spout-side region conical, conical in cross-section to the discharge end on. This allows the groove in simply arranged in the fuel injection valve become.
  • Another advantage is that the sealing seat immediately the groove adjoins. As a result, the stall edge can be very be arranged close to the sealing seat and the fuel with already high speed at the spoiler edge sweep past.
  • the stall can be ensured.
  • the groove by grinding produce. This allows the groove to be very simple, accurate and be produced inexpensively.
  • FIG. 1 example of a generic Fuel injection valve 1 is in the form of a Fuel injection valve 1 for fuel injection systems of mixture-compacting, externally ignited Internal combustion engine running.
  • the Fuel injector 1 is particularly suitable for direct injection of fuel into one illustrated combustion chamber of an internal combustion engine.
  • the fuel injection valve 1 consists of a Nozzle body 2, in which a valve needle 3 is arranged.
  • the valve needle 3 has a discharge side Valve-closing body 4, which with one on one Valve seat body 5 arranged valve seat surface 6 to a Tight fit together.
  • In the fuel injection valve 1 is it in the exemplary embodiment to an inward opening fuel injection valve 1, which via a Spray opening 7 has.
  • the nozzle body 2 is through a Seal 8 against an outer pole 9 of a magnetic coil 10th sealed.
  • the magnetic coil 10 is in a coil housing 11 encapsulated and wound on a bobbin 12, which rests against an inner pole 13 of the magnetic coil 10.
  • the Solenoid 10 is connected via an electrical line 19 of one via an electrical plug contact 17 can be fed electrical current.
  • the plug contact 17 is of a Plastic casing 18 surrounded, the inner pole 13th can be injected.
  • the valve needle 3 is in a valve needle guide fourteenth guided, which is designed disk-shaped. to Stroke adjustment is a paired shim 15. An the other side of the dial 15 is the Anchor 20. This is about a first flange 21 with the Valve needle 3 in conjunction, which by a weld 22 is connected to the first flange 21. On the first Flange 21 is supported by a helical return spring 23 which in the present design of the Fuel injection valve 1 by a sleeve 24 Bias is brought.
  • the armature 20 and a Guide element 36 extend fuel channels 30, 31 and 32nd
  • the fuel is via a central fuel supply 16 supplied and filtered by a filter element 25.
  • the Fuel injection valve 1 is through a rubber ring 28th against a not shown Fuel distribution line and by a seal 37 against sealed a cylinder head, not shown.
  • annular damping element 33 On the discharge side of the armature 20 is a annular damping element 33, which consists of a Elastomer material consists, arranged. It lies on one second flange 34, which via a weld 35th cohesively connected to the valve needle 3.
  • the armature 20 drops sufficient reduction of the magnetic field by the pressure of the Return spring 23 from the inner pole 13, causing the with the valve needle 3 in communication first flange 21st moved against the stroke direction.
  • the valve needle 3 is thereby moved in the same direction, causing the Valve closing body 4 touches on the valve seat surface 6 and the fuel injection valve 1 is closed.
  • Fig. 2 shows a schematic section of the Embodiment of the invention Fuel injection valve 1 in the discharge side area.
  • the fuel injection valve 1 opens to the outside.
  • the Valve-closing body 4 is integral with the valve needle 3 executed and widens conically or in Cross-section conical in the direction of injection.
  • the valve closing body 4 a first surface 41 which is coaxial and perpendicular to a Center axis 43 of the valve needle 3 is formed.
  • a conical or frustoconical design possible.
  • the surface 42 is in Cross-section straight and arranged so that the Spray-side end of the fuel injection valve. 1 expanded conically against the spray direction.
  • the second Surface 42 extends from the valve closing body 4 to the valve seat body 5 via the injection opening 7, which as an annular gap between the valve seat body 5 with the Valve seat surface 6 and the valve closing body 4 is formed is.
  • a groove 38 is in the embodiment shown in the embedded second surface 42.
  • the cone-shaped in Abspritzterrorism widening surface of the Valve closing body 4 opposite valve seat surface. 6 also widens conically. At the downstream End of the opposite, tapered surface of valve closing body 4 and valve seat surface 6 is the groove 38 arranged.
  • the groove 38 has a trough-like shape in cross-section and is in the embodiment in equal parts respectively partially in the valve seat body 5 and in the valve closing body. 4 arranged.
  • the groove 38 is immediately downstream of the Seating seat arranged.
  • the fuel flows when open Sealing seat from the spray opening 7, wherein on by two Steps 40 formed stall edges 39, of which one on the valve closing body 4 and one on Valve seat body 5 is formed, the fuel flow interrupted.
  • the stall edges 39 and the region of Stall edges 39 are not through the groove 38 from shown combustion chamber away, in the Fuel injection valve 1 set back. at closed sealing seat are the stall edges 39 in Embodiment at the same height of the injection opening. 7 arranged.
  • the invention is not limited to that shown Embodiment limited.
  • the features of the embodiment may be in any Be combined with each other.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP05001507A 2004-01-28 2005-01-26 Buse d'injection de carburant Withdrawn EP1559906A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200410004169 DE102004004169A1 (de) 2004-01-28 2004-01-28 Brennstoffeinspritzventil
DE102004004169 2004-01-28

Publications (2)

Publication Number Publication Date
EP1559906A2 true EP1559906A2 (fr) 2005-08-03
EP1559906A3 EP1559906A3 (fr) 2007-02-14

Family

ID=34638771

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05001507A Withdrawn EP1559906A3 (fr) 2004-01-28 2005-01-26 Buse d'injection de carburant

Country Status (2)

Country Link
EP (1) EP1559906A3 (fr)
DE (1) DE102004004169A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2613396A (en) * 2021-12-02 2023-06-07 Delphi Tech Ip Ltd Fuel injector suitable for gaseous fuel

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10152415A1 (de) 2001-10-24 2003-06-18 Bosch Gmbh Robert Brennstoffeinspritzventil

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3740462A1 (de) * 1987-11-28 1989-06-08 Bosch Gmbh Robert Verfahren zum fertigbearbeiten von ventilnadeln fuer kraftstoff-einspritzduesen
JP2819702B2 (ja) * 1989-12-12 1998-11-05 株式会社デンソー 燃料噴射弁
US5522550A (en) * 1992-06-10 1996-06-04 Robert Bosch Gmbh Injection nozzle for internal combustion engines
DE29504898U1 (de) * 1995-03-23 1996-07-25 FEV Motorentechnik GmbH & Co. KG, 52078 Aachen Ventildüse
JPH1137016A (ja) * 1997-07-18 1999-02-09 Zexel Corp 燃料噴射ノズル
AUPQ708100A0 (en) * 2000-04-20 2000-05-18 Orbital Engine Company (Australia) Proprietary Limited Deposit control in fuel injector nozzles
US20040256494A1 (en) * 2003-06-03 2004-12-23 Varble Daniel L. Outwardly-opening fuel injector
DE102004053351B4 (de) * 2004-11-04 2007-06-14 Siemens Ag Ventil zum Einspriten von Brennstoff

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10152415A1 (de) 2001-10-24 2003-06-18 Bosch Gmbh Robert Brennstoffeinspritzventil

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2613396A (en) * 2021-12-02 2023-06-07 Delphi Tech Ip Ltd Fuel injector suitable for gaseous fuel
GB2613396B (en) * 2021-12-02 2024-03-20 Delphi Tech Ip Ltd Fuel injector suitable for gaseous fuel

Also Published As

Publication number Publication date
EP1559906A3 (fr) 2007-02-14
DE102004004169A1 (de) 2005-08-18

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