EP1303696B1 - Soupape d'injection de carburant - Google Patents

Soupape d'injection de carburant Download PDF

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Publication number
EP1303696B1
EP1303696B1 EP01953881A EP01953881A EP1303696B1 EP 1303696 B1 EP1303696 B1 EP 1303696B1 EP 01953881 A EP01953881 A EP 01953881A EP 01953881 A EP01953881 A EP 01953881A EP 1303696 B1 EP1303696 B1 EP 1303696B1
Authority
EP
European Patent Office
Prior art keywords
spray
valve
fuel injection
injection valve
discharge openings
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.)
Expired - Lifetime
Application number
EP01953881A
Other languages
German (de)
English (en)
Other versions
EP1303696A1 (fr
Inventor
Fevzi Yildirim
Guenther Hohl
Michael Huebel
Norbert Keim
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 EP1303696A1 publication Critical patent/EP1303696A1/fr
Application granted granted Critical
Publication of EP1303696B1 publication Critical patent/EP1303696B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
    • F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
    • F02M45/08—Injectors peculiar 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
    • 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
    • F02M61/1853—Orifice plates
    • 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
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
    • F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
    • F02M45/08—Injectors peculiar thereto
    • F02M45/086—Having more than one injection-valve controlling discharge 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
    • 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
    • F02M61/047—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 being formed by deformable nozzle parts, e.g. flexible plates or discs with fuel discharge orifices

Definitions

  • the invention is based on a fuel injector according to the genus of the main claim.
  • DE 32 28 079 A1 describes a fuel injector known that has two valve needles and through this can control several spray orifices separately.
  • the Valve needles are each countered by a spring one sealing seat each with a preload force applied. If the one valve needle by a certain The forward stroke is lifted out of its sealing seat, so it hits against a stop on the other valve needle and takes at another stroke with this valve needle.
  • the two sealing seats of the two valve needles close different Spray orifices at different angles can be aligned.
  • the structure is multi-part, and two sealing seats have to be manufactured precisely, which creates high costs.
  • valve needle acts as on its combustion chamber side Valve closing body trained section with a Valve seat surface together to form a sealing seat, the Separates spray bores from a fuel feed.
  • valve needle guided auxiliary also has one Valve closing body with a second Valve seat surface of the fuel injector interacts.
  • the fuel injector according to the invention with the characteristic features of claim 1 has in contrast the advantage of an inexpensive and technically good Solution to be implemented for groups of Spray orifices to offer as the wider group of No more spray openings for their separate opening requires a precisely manufactured sealing seat.
  • the angle at which the fuel is distributed in the spray pattern of the fuel injector, in Dependent on the valve stroke can be changed.
  • a first can be advantageous by tongues of the plate spring Bolt circle from spray openings are covered. Further Spray openings can in particular be different Have spray angle and one another circumferential angle. So can be advantageous at low injection quantity and load of the internal combustion engine initially only a certain number of spray orifices be opened, the narrow spray angle of the Spray openings, so that a Fuel injection jet consists of Jets of fuel, one overall has narrow angles. At higher loads the Internal combustion engine and corresponding requirements in Stratified charge operation of one operated with a lean mix concept Internal combustion engine are also the spray openings of the open further bolt circle. These can be done in one larger spray angle can be arranged. The Fuel injection jet, which is injected as a whole, is delivered at a larger angle.
  • Fig. 1 shows a section in a cut Representation of the section of an inventive Fuel injector, the not shown here Combustion chamber facing an internal combustion engine.
  • a valve body 1 is provided with an injection orifice plate 2, has the spray openings 4, via a weld seam 3 connected and forms together with this one Valve seat body 22.
  • a valve needle 5 has the End not shown combustion chamber facing one Valve closing body 6. This valve closing body 6 is connected to the valve needle 5 via a weld 7.
  • the Valve closing body 6 interacts with one in valve body 1 provided z.
  • B. frustoconical valve seat 8 a sealing seat 9 together.
  • Fig. 1 shows the fuel injector in the closed Status.
  • the plate spring 13 is through, the pressure element 11 flat compared to their shape in the unloaded state pressed, and the tongues 14 overlap under the tongues 14 arranged outer spray openings 15.
  • the pressure element 11 has a collar 16 which serves as a stop.
  • the valve closing body 6 connected to the valve needle 5 by the weld 7 forms the step 17 serving as a counterstop in the recess 10. After a partial stroke h 1 of the valve needle 5, the collar 16 and step 17 come to lie against one another.
  • the collar 16 lies on the Gradation 17 and the pressure element 11 is of the Valve needle 5 taken away.
  • the plate spring 13 On the valve seat body 22, in Embodiment on the spray hole plate 2 is the plate spring 13.
  • the pressure element 11 is opposite closed state of the fuel injector as he is shown in Fig. 1, from the valve needle 5 via the Bund 16 and the gradation 17 adjacent to the Bund 16 the spray hole plate 2 is lifted and exercises on the Tongues 14 of the plate spring 13 no force.
  • the Disc spring 13 therefore takes their bias appropriate form and gives the under the tongues 14th arranged, so far covered by the tongues 14 Spray openings 15 free.
  • Fig. 3 shows the section plane III-III of Fig. 1.
  • the spray openings 4 and a central spray opening 18 and that of the tongues 14 the plate spring 13 covered spray openings 15 arranged, which is covered by the tongues 14 in supervision are and are therefore indicated by dashed lines.
  • This covered spray openings 15 are in a first outer bolt circle 19 arranged, the middle
  • the circumferential line is drawn with a broken line.
  • They don't covered spray openings 4 are in a second inner bolt circle 20 arranged, the middle Circumferential line is also shown in dashed lines.
  • the Belleville spring 13 is in the compressed state, corresponding to a completely closed one Fuel injector, shown. Then they all lie Tongues 14 on the spray hole plate 2.
  • valve needle 5 is not here shown actuator (electromagnetic, piezoelectric or magnetostrictive) from the sealing seat 9, so the Fuel feed to the spray openings 4 and central spray opening 18 released, however, the covered by the tongues 14 of the plate spring 13 Spray openings 15 are still closed.
  • the Pressure element 11 presses the tongues 14 against the Spray hole plate 2 and closes the covered Spray openings 15.
  • the angle of a fuel injection cone as a whole advantageously enables a Fuel injector a high switching frequency; by the low moving masses is a quick response guaranteed.
  • the embodiment of the invention is also to implement inexpensively.
  • the plate spring 13 so shaped that not only by suitable surfaces Spray openings of the first bolt circle 19, but also Spray openings of the second bolt circle 20 covered and the discharge openings 4.15 of the releases different bolt circles 19, 20 in succession, by parts of the plate spring 13 from the bolt circle 20 arch up with less relief than from Spray openings of the other bolt circle 19, the other parts of the plate spring 13 are covered.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Claims (11)

  1. Injecteur de carburant, en particulier soupape d'injection pour des installations d'injection de carburant destinées à des moteurs à combustion interne, comportant une aiguille d'injecteur (5) qui présente un corps de fermeture de soupape (6) lequel pour obtenir un siège d'étanchéité (9) agit conjointement avec une surface de siège de soupape (8) située dans un corps de siège de soupape (22), plusieurs ouvertures d'éjection (4, 15, 18) qui sont rendues étanches au moyen du siège d'étanchéité (9) par rapport à une alimentation en carburant étant disposées en aval du siège d'étanchéité (9),
    caractérisée en ce que
    le corps de fermeture de soupape (6) présente dans une cavité (10) orientée vers le corps de siège de soupape (22) un élément de pression (11) qui, en étant précontraint sur un élément élastique (13), agit de telle manière qu'au moins une des ouvertures d'éjection (15) est recouverte par l'élément élastique (13) et l'élément élastique (13) libère cette ouverture d'éjection (15) sans que l'élément de pression (11) agisse.
  2. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    l'élément de pression (11) présente une butée contre laquelle une contre-butée du corps de fermeture de soupape (6) s'applique après une course partielle (h1) du corps de fermeture de soupape (6) et soulève l'élément de pression (11) lorsque le corps de siège de soupape (22) continue sa course.
  3. Injecteur de carburant selon la revendication 2,
    caractérisé en ce que
    la butée de l'élément de pression (11) est un joint (16) en saillie et la contre-butée du corps de fermeture de soupape (6) est un épaulement (17) dans la cavité (10) du corps de fermeture de soupape (6).
  4. Injecteur de carburant selon l'une des revendications 1 à 3,
    caractérisée en ce que
    l'élément élastique est conçu en tant que ressort à disques (13) et le ressort à disques (13) présente des lames (14) orientées radialement vers l'intérieur, au moins une lame (14) recouvrant une ouverture d'éjection (15) lorsque les lames (14) à leur extrémité intérieure radiale sont pressées par l'élément de pression (11) contre le corps de siège de soupape (22).
  5. Injecteur de carburant selon la revendication 4,
    caractérisée en ce qu'
    une partie des ouvertures d'aspersion (15) est disposée dans un premier cercle de trous (19) recouvert par des lames (14) du ressort à disques (13).
  6. Injecteur de carburant selon la revendication 5,
    caractérisé en ce que
    le corps de siège de soupape (22) présente un deuxième cercle de trous (20) formé d'ouvertures d'éjection (4) situées radialement à l'intérieur par rapport au premier cercle de trous (19) et des ouvertures d'éjection (4) du deuxième cercle de trous (20) sont aussi recouvertes par des segments, façonnés de façon correspondante, du ressort à disques (13).
  7. Injecteur de carburant selon la revendication 6,
    caractérisé en ce que
    le ressort à disques (13) est structuré de telle manière qu'il libère les unes après les autres les ouvertures déjection (4, 15) des différents cercles de trous (19, 20) lors d'une décharge.
  8. Injecteur de carburant selon l'une des revendications précédentes,
    caractérisé en ce que
    les ouvertures d'éjection (4, 15, 18) présentent différents angles d'éjection.
  9. Injecteur de carburant selon l'une des revendications précédentes,
    caractérisé en ce que
    les ouvertures d'éjection (4, 15, 18) présentent différents diamètres d'ouverture et/ou différentes longueurs axiales.
  10. Injecteur de carburant selon l'une des revendications précédentes,
    caractérisé en ce que
    l'aiguille (5) peut être manoeuvrée au moyen d'un actionneur électromagnétique ou piézoélectrique.
  11. Injecteur de carburant selon l'une des revendications précédentes,
    caractérisé en ce que
    les ouvertures d'éjection (4, 15, 18) sont façonnées dans une plaque à trous d'éjection (2) reliée à demeure à un corps de soupape (1) présentant le siège d'étanchéité (9).
EP01953881A 2000-07-15 2001-07-13 Soupape d'injection de carburant Expired - Lifetime EP1303696B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10034445 2000-07-15
DE10034445A DE10034445A1 (de) 2000-07-15 2000-07-15 Brennstoffeinspritzventil
PCT/DE2001/002541 WO2002006664A1 (fr) 2000-07-15 2001-07-13 Soupape d'injection de carburant

Publications (2)

Publication Number Publication Date
EP1303696A1 EP1303696A1 (fr) 2003-04-23
EP1303696B1 true EP1303696B1 (fr) 2004-05-06

Family

ID=7649034

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01953881A Expired - Lifetime EP1303696B1 (fr) 2000-07-15 2001-07-13 Soupape d'injection de carburant

Country Status (6)

Country Link
US (1) US6772965B2 (fr)
EP (1) EP1303696B1 (fr)
JP (1) JP2004504532A (fr)
KR (1) KR20020029436A (fr)
DE (2) DE10034445A1 (fr)
WO (1) WO2002006664A1 (fr)

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DE10063259A1 (de) * 2000-12-19 2002-07-11 Bosch Gmbh Robert Brennstoffeinspritzventil
DE10261175A1 (de) * 2002-12-20 2004-07-08 Daimlerchrysler Ag Schieberventil
DE10314670A1 (de) * 2003-04-01 2004-10-14 Robert Bosch Gmbh Verfahren zur Herstellung und Befestigung einer Lochscheibe
JP3891974B2 (ja) * 2003-10-01 2007-03-14 株式会社日本自動車部品総合研究所 燃料噴射弁
DE602004018259D1 (de) * 2004-01-28 2009-01-22 Continental Automotive Italy S Einspritzventil mit verformbarer Nadel
EP1559905A1 (fr) * 2004-01-29 2005-08-03 Siemens VDO Automotive S.p.A. Injecteur de fluide avec une aiguille de soupape deformable
JP4289458B2 (ja) * 2004-09-07 2009-07-01 三菱電機株式会社 電動パワーステアリング制御装置
JP2006152812A (ja) * 2004-11-25 2006-06-15 Denso Corp 燃料噴射弁およびその製造方法
US7762478B1 (en) * 2006-01-13 2010-07-27 Continental Automotive Systems Us, Inc. High speed gasoline unit fuel injector
DE102006031567A1 (de) * 2006-07-07 2008-01-10 Siemens Ag Einspritzsystem und Verfahren zum Herstellen eines Einspritzsystems
US7669789B2 (en) * 2007-08-29 2010-03-02 Visteon Global Technologies, Inc. Low pressure fuel injector nozzle
JP4420102B2 (ja) * 2007-10-30 2010-02-24 株式会社デンソー インジェクタ
US8387599B2 (en) 2008-01-07 2013-03-05 Mcalister Technologies, Llc Methods and systems for reducing the formation of oxides of nitrogen during combustion in engines
US7628137B1 (en) * 2008-01-07 2009-12-08 Mcalister Roy E Multifuel storage, metering and ignition system
WO2011025512A1 (fr) 2009-08-27 2011-03-03 Mcallister Technologies, Llc Injecteurs et allumeurs de combustible intégrés et procédés d'utilisation et de fabrication associés
US7946276B2 (en) * 2008-03-31 2011-05-24 Caterpillar Inc. Protection device for a solenoid operated valve assembly
EP2226492A1 (fr) * 2009-03-04 2010-09-08 Continental Automotive GmbH Soupape d'injection d'absorption de l'energie cinetique d'une aiguille
EP2510218A4 (fr) 2009-12-07 2014-03-12 Mcalister Technologies Llc Allumeurs d'injecteur de carburant intégrés pour applications moteur importantes et procédés associés d'utilisation et de fabrication
AU2011216246B2 (en) 2010-02-13 2013-01-17 Mcalister Technologies, Llc Fuel injector assemblies having acoustical force modifiers and associated methods of use and manufacture
US20120103308A1 (en) * 2010-10-28 2012-05-03 Caterpillar, Inc. Two-Way Valve Orifice Plate for a Fuel Injector
US8919377B2 (en) 2011-08-12 2014-12-30 Mcalister Technologies, Llc Acoustically actuated flow valve assembly including a plurality of reed valves
EP2880298A1 (fr) * 2012-08-01 2015-06-10 3M Innovative Properties Company Injecteurs de carburant ayant une face d'entrée de buse tridimensionnelle non estampée
EP2880299A1 (fr) 2012-08-01 2015-06-10 3M Innovative Properties Company Injecteurs de carburant avec un coefficient de décharge de carburant amélioré
US9169814B2 (en) 2012-11-02 2015-10-27 Mcalister Technologies, Llc Systems, methods, and devices with enhanced lorentz thrust
US9169821B2 (en) 2012-11-02 2015-10-27 Mcalister Technologies, Llc Fuel injection systems with enhanced corona burst
US8746197B2 (en) 2012-11-02 2014-06-10 Mcalister Technologies, Llc Fuel injection systems with enhanced corona burst
US9200561B2 (en) 2012-11-12 2015-12-01 Mcalister Technologies, Llc Chemical fuel conditioning and activation
US9194337B2 (en) 2013-03-14 2015-11-24 Advanced Green Innovations, LLC High pressure direct injected gaseous fuel system and retrofit kit incorporating the same
DE102013212191A1 (de) * 2013-06-26 2014-12-31 Robert Bosch Gmbh Verfahren und Vorrichtung zum Einblasen eines gasförmigen Mediums
EP2857671A1 (fr) * 2013-10-04 2015-04-08 Continental Automotive GmbH Injecteur de fluide
US10370177B2 (en) * 2016-11-22 2019-08-06 Summit Packaging Systems, Inc. Dual component insert with uniform discharge orifice for fine mist spray
DE102017220911A1 (de) * 2017-11-23 2019-05-23 Robert Bosch Gmbh Gasinjektor mit verbesserten Einblaseigenschaften

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DE3048304A1 (de) 1980-12-20 1982-07-29 Robert Bosch Gmbh, 7000 Stuttgart "kraftstoffeinspritzduese fuer brennkraftmaschinen"
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US5692723A (en) * 1995-06-06 1997-12-02 Sagem-Lucas, Inc. Electromagnetically actuated disc-type valve
US5642862A (en) * 1995-07-28 1997-07-01 Siemens Automotive Corporation Fuel injection valve having a guide diaphragm and method for assembling
US5758865A (en) * 1996-08-21 1998-06-02 Kavlico Corporation Fuel injection valve and engine including the same

Also Published As

Publication number Publication date
EP1303696A1 (fr) 2003-04-23
DE50102215D1 (de) 2004-06-09
DE10034445A1 (de) 2002-01-24
US20020179742A1 (en) 2002-12-05
US6772965B2 (en) 2004-08-10
KR20020029436A (ko) 2002-04-18
WO2002006664A1 (fr) 2002-01-24
JP2004504532A (ja) 2004-02-12

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