EP0186788A1 - Injecteur de combustible à commande électromagnétique - Google Patents

Injecteur de combustible à commande électromagnétique Download PDF

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Publication number
EP0186788A1
EP0186788A1 EP85115124A EP85115124A EP0186788A1 EP 0186788 A1 EP0186788 A1 EP 0186788A1 EP 85115124 A EP85115124 A EP 85115124A EP 85115124 A EP85115124 A EP 85115124A EP 0186788 A1 EP0186788 A1 EP 0186788A1
Authority
EP
European Patent Office
Prior art keywords
channels
fuel injection
swirl chamber
injection valve
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.)
Withdrawn
Application number
EP85115124A
Other languages
German (de)
English (en)
Inventor
Martin Horn
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 EP0186788A1 publication Critical patent/EP0186788A1/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Withdrawn legal-status Critical Current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
    • F02M61/162—Means to impart a whirling motion to fuel upstream or near discharging orifices
    • 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
    • F02M51/0639—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 acting as a valve
    • 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

Definitions

  • the invention relates to an electromagnetically actuated fuel injection valve for injection systems of internal combustion engines, with a valve housing, an electromagnetic actuator arranged within the valve housing for moving a valve closing element which is spring-loaded in the closing direction from a closed position blocking a passage opening into an open position, with a swirl chamber, into the one connected to the passage opening , approximately open radially directed channels and from which a coaxial fuel outlet emerges.
  • the fuel flow in the swirl chamber receives a swirl around the longitudinal axis of the fuel injection valve, which already improves the atomization of the fuel leaking fuel is caused.
  • the channels have a flow cross-section which decreases towards the swirl chamber.
  • the swirl formation of the fuel flows begins in the channels, whereby the same sense of curvature of the channels when the fuel flows meet each other still support each other in the swirl formation.
  • the channels can open radially into the swirl chamber.
  • the channels can be connected to the passage opening via approximately axial inflows. be connected.
  • a further refinement of the atomization of the escaping fuel is achieved in that the fuel outlet is an orifice bore. If the swirl chamber, channels and fuel outlet are arranged in one or more components immovably connected to the valve housing, the position of the mouth of the fuel outlet is constant in all operating conditions and cannot lead to negative influences on the escaping fuel.
  • the cover disk is preferably a perforated diaphragm.
  • the components containing the swirl chamber, channels and / or fuel outlet can be exchangeably connected to the valve housing, then a standard structure of a fuel injection valve can be used and even converted for a large number of applications, with the most favorable outlet ratios in the case of different fuel flows by appropriate combinations of swirl chambers, channels and Fuel outlets of different sizes can be combined.
  • the fuel injection valve shown has a valve housing 1, in which a winding body 2 with the magnetic winding 3 is arranged.
  • a soft iron core 4 provided with a through hole 5 extends through the winding body 2 and forms an inlet nozzle 6 with its one end protruding from the valve housing 1.
  • the other end face of the soft iron core 4 is opposed by an air gap to form an anchor valve closure plate 7, which has a sealing surface 8 on its side opposite the soft iron core 4.
  • valve closure plate 7 By acting on a compression spring 9 supported on the soft iron core 4, the valve closure plate 7 is urged to bear against an annular seat 10 which projects axially to the valve closure plate 7 and which surrounds a passage opening 11.
  • a disc-like swirl body 13 and a perforated panel 14 are used interchangeably and held in contact by a locking piece 15 with its radially circumferential edge area on an annular shoulder 16 of the stepped outlet bore 17 of the outlet port 12.
  • the swirl body 13, shown enlarged in FIG. 2, has two axial inflows 18, which each connect the area of the passage opening 11 to the radially outer area of a channel 19 which extends approximately radially to the center.
  • the channels are located radially opposite one another in the faceplate side of the swirl body 13 as e.g. formed by erosion depressions which extend with the same sense of curvature spirally to a swirl chamber 20 formed in the center.
  • the openings of the channels 19 in the swirl chamber 20 lie radially opposite one another.
  • the depressions forming the channels 19 are closed by the perforated diaphragm 14, which, coaxially with the swirl chamber 20, has a continuous fuel outlet 21 which is designed as an aperture hole.
  • the fuel passes from the through bore 5, through the through grooves 22 on the end face of the soft iron core 4 and through through bores 23 of the valve closure plate 7 past the ring seat 10 of the open valve to the passage opening 11. From here, the fuel flows through the inflows 18 and is then both accelerated and swirled in the channels 19.

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)
EP85115124A 1984-12-08 1985-11-28 Injecteur de combustible à commande électromagnétique Withdrawn EP0186788A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3444925A DE3444925A1 (de) 1984-12-08 1984-12-08 Elektromagnetisch betaetigbares kraftstoffeinspritzventil
DE3444925 1984-12-08

Publications (1)

Publication Number Publication Date
EP0186788A1 true EP0186788A1 (fr) 1986-07-09

Family

ID=6252326

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85115124A Withdrawn EP0186788A1 (fr) 1984-12-08 1985-11-28 Injecteur de combustible à commande électromagnétique

Country Status (2)

Country Link
EP (1) EP0186788A1 (fr)
DE (1) DE3444925A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996011335A1 (fr) * 1994-10-07 1996-04-18 Siemens Automotive Corporation Atomiseur a turbulence multidisque pour injecteur de carburant

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8515847D0 (en) * 1985-06-22 1985-07-24 Lucas Ind Plc Fuel injection nozzle
US4951878A (en) * 1987-11-16 1990-08-28 Casey Gary L Pico fuel injector valve
JPH0849624A (ja) * 1994-06-01 1996-02-20 Zexel Corp 電磁式燃料噴射弁の燃料侵入防止装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB118856A (en) * 1917-09-12 1918-09-12 William George Stock An Improved Liquid Fuel Spraying Apparatus for Internal Combustion Engines.
FR976337A (fr) * 1947-12-09 1951-03-16 Lucas Ltd Joseph Tuyère pour combustibles liquides ou autres liquides
DE827139C (de) * 1948-02-16 1952-01-07 Lucas Ltd Joseph Einspritzduese fuer Brennkraftmaschinen
FR2192465A5 (fr) * 1970-11-09 1974-02-08 Delavan Manufacturing Co
GB2125888A (en) * 1982-08-26 1984-03-14 Bosch Gmbh Robert I.C. Engine fuel injection valve

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB118856A (en) * 1917-09-12 1918-09-12 William George Stock An Improved Liquid Fuel Spraying Apparatus for Internal Combustion Engines.
FR976337A (fr) * 1947-12-09 1951-03-16 Lucas Ltd Joseph Tuyère pour combustibles liquides ou autres liquides
DE827139C (de) * 1948-02-16 1952-01-07 Lucas Ltd Joseph Einspritzduese fuer Brennkraftmaschinen
FR2192465A5 (fr) * 1970-11-09 1974-02-08 Delavan Manufacturing Co
GB2125888A (en) * 1982-08-26 1984-03-14 Bosch Gmbh Robert I.C. Engine fuel injection valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996011335A1 (fr) * 1994-10-07 1996-04-18 Siemens Automotive Corporation Atomiseur a turbulence multidisque pour injecteur de carburant

Also Published As

Publication number Publication date
DE3444925A1 (de) 1986-06-12

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19860516

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Effective date: 19870128

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18W Application withdrawn

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Inventor name: HORN, MARTIN