EP1339975B1 - Soupape d'injection de carburant - Google Patents

Soupape d'injection de carburant Download PDF

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Publication number
EP1339975B1
EP1339975B1 EP01998732A EP01998732A EP1339975B1 EP 1339975 B1 EP1339975 B1 EP 1339975B1 EP 01998732 A EP01998732 A EP 01998732A EP 01998732 A EP01998732 A EP 01998732A EP 1339975 B1 EP1339975 B1 EP 1339975B1
Authority
EP
European Patent Office
Prior art keywords
spray
fuel
fuel injection
injection valve
spray 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
EP01998732A
Other languages
German (de)
English (en)
Other versions
EP1339975A1 (fr
Inventor
Detlef Nowak
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 EP1339975A1 publication Critical patent/EP1339975A1/fr
Application granted granted Critical
Publication of EP1339975B1 publication Critical patent/EP1339975B1/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
    • 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

Definitions

  • Fuel injectors that consist of several fuel Spraying spray openings are e.g. from the DE 198 27 219 A1 known. You have one Beam adjustment plate located at the downstream end of the Fuel injector is arranged and in the several Spray openings are introduced.
  • the spray orifices are divided into two groups based on two bolt circles are arranged with different diameters.
  • the central axes of each group of spray orifices each on a cone shell, the cones being in open downstream.
  • the cone that the Center axes of the spray orifices of the bolt circle with the is assigned larger diameter, has a larger Opening angle on than the cone, on the surface of which the Central axes of the spray orifices of the inner bolt circle lie so that the cone shells have no cutting line and the individual partial fuel jets are not together collide.
  • the jet shim can also be used with one to the outside of the fuel injector domed geometry be executed.
  • the spray openings are in the domed Area introduced so that the sprayed fuel itself along the beam path from the central axis of the Fuel injector removed.
  • Fuel injectors with several Spray openings are known from DE 198 04 463 A1. She have a conical downstream termination of the Fuel injector in which two rows of Spray openings are arranged. Due to the conical Geometry of the downstream end of the Fuel injector are aimed Fuel jets during the spraying process from the central axis the fuel injector away.
  • the single ones Partial beams are on one or more cone shells arranged.
  • the valve closing body has a central recess downstream of the sealing seat, through which the fuel when open Fuel injector to openings in a first Perforated disc flows. At least the first of at least two such a shape has to be flowed through perforated disks on that part of the disc in the recess of the Valve closing body protrudes. Downstream is between volume of the first and the following perforated disc educated.
  • the swirl generation from the metering of the fuel decoupled. For example, the swirl at Flow through the openings of the upstream disc respectively. The flow is evened out in volume between the two perforated disks and the fuel is in exactly metered amount of fuel sprayed.
  • Another disadvantage is the use of several Slices limited variability in the geometric Formation of the jet direction of the sprayed Fuel.
  • By shaping the first perforated disc in the recess of the valve seat body is the possibility of radial upstream bulge of the second perforated disc very limited. This makes the arrangement of the Spray orifices limited to simple geometries, if a collision of the individual beams is to be prevented.
  • Fuel injector also has the disadvantage of one thick-walled version in the area of the spray openings.
  • the one-piece design of the downstream end and the Fuel injector housing requires high Wall thicknesses.
  • the used thereby Manufacturing technologies for introducing the spray openings are expensive because of the small hole diameter of a single one Spray opening not punched with the large wall thickness can be.
  • Fuel injector the single orifice plate, whose dome-shaped curvature is directed upstream. This measure allows the fuel jets on the Shell surface of a double cone can be arranged. Despite one large cone opening angle is the fuel mixture in the Area of the central axis of the fuel injector is not emaciated. The focus of the hosed fuel lies in Combustion chamber and not in the fuel injector.
  • the spray openings on a spiral can e.g. the fuel is sprayed asymmetrically become.
  • the individual fuel jets collide not because the spray orifices are arranged so that one fuel jet between each Fuel jets from the opposite spray openings hits through.
  • Particularly advantageous with one asymmetrical spray pattern is the possibility that Adapt the spray direction to the special requirements, by the location of the spark plug and Fuel injector to each other arise.
  • the fuel injector according to the invention has the advantage that the material of the spray plate through the Shaping process a solidification e.g. by cold forming experiences. This allows smaller for the spray orifice plate Material thicknesses are used, which in turn means that Introduce the spray openings and attach the Orifice plate on the fuel injector is simplified. Manufacturing costs will be reduced.
  • Spray hole disk Advantageous with suitable processes for the production of Spray hole disk is the introduction of the spray openings before deforming the disc. This makes it possible in a flat disk, the spray openings by simple and inexpensive processes such as punching insert into the spray hole disc. The material is still not solidified. This means that the Punching tool possible despite the small hole diameter. Only in a second step is the forming next to an additional form stability a solidification, as they e.g. created by cold forming into the material brought in. The component is therefore also small Wall thicknesses for use at high fuel pressures suitable.
  • the fuel injector 1 is in the form of a Fuel injector 1 for fuel injection systems of mixture-compressing, spark-ignited Running internal combustion engines.
  • the Fuel injection valve 1 is particularly suitable for not directly injecting fuel into one Shown combustion chamber of an internal combustion engine.
  • the fuel injection valve 1 comprises a nozzle body 2, in which a valve needle 3 is arranged.
  • the Valve needle 3 stands with a valve closing body 4 in Active connection with one on a valve seat body 5 arranged valve seat surface 6 to a sealing seat interacts.
  • the fuel injector 1 is acting it is an electromagnetic in the exemplary embodiment actuated fuel injector 1, which via has at least one spray opening 7.
  • the nozzle body 2 is one by a seal 8 against the outer pole Magnetic coil 10 sealed.
  • the solenoid 10 is in one Encapsulated bobbin case 11 and on a bobbin 12 wound, which on an inner pole 13 of the solenoid 10th is applied.
  • the inner pole 13 and the outer pole 9 are by a Gap 26 separated from each other and based on one Connecting component 29 from.
  • the solenoid 10 is a Line 19 from via an electrical plug contact 17th supplyable electric current excited.
  • the plug contact 17 is surrounded by a plastic sheath 18, which on Inner pole 13 can be molded.
  • the valve needle 3 is in a disc-shaped design Valve needle guide 14 out. This is one Paired shim 15, which for setting the Valve needle stroke serves.
  • an anchor 20 On the upstream side of the Adjustment disk 15 is an anchor 20. This is standing non-positively via a flange 21 with the valve needle 3 in connection, which by a weld 22 with the Flange 21 is connected.
  • the flange 21 is supported a return spring 23, which in the present Design of the fuel injector 1 by one in the Inner pole 13 pressed sleeve 24 brought to bias becomes.
  • valve needle 3 in operative connection standing valve closing body 4 lifts from the Valve seat 6, the fuel flows in one Central recess 32 past the valve closing body 4 in a through opening 34 of the valve seat body 5 and is through the spray openings 7 in one Spray hole disk 31 hosed.
  • FIG. 2 shows an embodiment in which the orifice plate 31 on the downstream surface of the Valve seat body 5 fixed by a weld 33 is.
  • the weld joint 33 can e.g. by laser welding be generated.
  • the Spray plate 31 on a dome-shaped curvature 37, their radial expansion preferably with the radial Expansion of the through opening 34 corresponds to which with the fuel injector 1 open Spray openings 7 are supplied with fuel.
  • the dome-shaped curvature 37 is oriented upstream, whereby the downstream of the valve closing body 4 dead volume located inside the through opening 34 is reduced.
  • the dimensional stability is greater than that of a flat one Spray hole disc 31.
  • the metering of the fuel to be sprayed is carried out by the Sum of the cross sections of the spray openings 7 in the Spray plate 31 set. They form completely open fuel injector 1 the smallest for the Cross-sectional area to flow through fuel, so that a restricting the flow rate only at the Spray plate 31 takes place.
  • fuel channels can also be introduced into the valve seat body 5, which upstream of the sealing seat in the valve seat surface 6 open out.
  • the radial corresponds Expansion of the central recess 32 with the radial Expansion of the valve closing body 4 so that the Valve closing body 4 guided in the central recess 32 is.
  • the cross section of, for example, as grooves in the central recess 32 introduced fuel channels must again be significantly larger than the sum of the Cross sections of the spray openings 7 in the Spray hole disc 31.
  • FIG. 3 An example of the arrangement of the spray openings 7 on the Spray hole disk 31 is shown in FIG. 3.
  • the Spray openings 7 are arranged on a spiral.
  • the Central axes 35 of the spray openings 7 are directed that their extension in the spray direction the central axis 36th of the fuel injector 1 cuts. With the same Inclination angle of the central axes 35 of the spray openings 7 against the central axis 36 of the fuel injector 1 intersect the central axes 35 of the spray orifices 7 Central axis 36 of fuel injector 1 in different distances from the downstream end of the Fuel injector 1.
  • the spray openings 7 on the Spiral distributed that opposite each Spray opening 7 no further spray opening 7 arranged is.
  • the spray openings 7 can also in the Spray plate 31 be introduced that the Central axes 35 of spray openings 7 and central axis 36 of fuel injector 1 do not cut.
  • Fuel distribution in the area of the central axis 36 of the Fuel injector 1 can be set.
  • the center of the spiral on which the spray openings 7 are arranged from the central axis 36 of the Fuel injector 1 may be arranged differently.
  • the arrangement on a spiral is also the deviation the center from the center of the dome-shaped curvature 37 the spray plate 31 possible.

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 (3)

  1. Injecteur de carburant (1) pour installations d'injection de carburant de moteurs à combustion interne, comprenant une aiguille de soupape (3) et un obturateur de soupape (4) en liaison active avec celui-ci, qui coopère avec une surface de siège de soupape (6) disposée dans un corps de siège de soupape (5) pour former un siège d'étanchéité, ainsi que plusieurs ouvertures d'éjection (7) aménagées dans un disque perforé d'injection (31) qui, disposé en aval du siège d'étanchéité au niveau de l'injecteur de carburant (1), présente au moins dans la zone des ouvertures d'éjection (7), une courbure (37) en forme de calotte, orientée à contresens de l'écoulement du carburant,
    caractérisé en ce que
    les ouvertures d'éjection (7) sont disposées en forme de spirale sur la courbure (37) en forme de calotte du disque perforé d'injection (31) de telle sorte qu'en projection des axes centraux (35) des ouvertures d'éjection (7) sur un plan perpendiculaire à l'axe central (36) de l'injecteur de carburant (1), les axes centraux (1) des ouvertures d'éjection (7) présentent par rapport à l'axe central (36) de l'injecteur de carburant (1), une distance minimale dimensionnée pour que les différents jets partiels de carburant sortant des ouvertures d'éjection (7) n'entrent pas en interaction les uns avec les autres.
  2. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    la courbure (37) en forme de calotte pénètre dans un évidement central (32) du corps de siège de soupape (5).
  3. Injecteur de carburant selon la revendication 1 ou 2,
    caractérisé en ce que
    dans une projection des axes centraux (35) des ouvertures d'éjection (7), sur un plan perpendiculaire à l'axe central (36) de l'injecteur de carburant (1), les axes centraux (35) de chaque ouverture d'éjection (7) divisent en deux moitiés l'angle inclus entre deux axes centraux (35), d'ouvertures d'éjection (7) voisines opposées par rapport à l'axe central (36) de l'injecteur de carburant (1).
EP01998732A 2000-11-28 2001-11-26 Soupape d'injection de carburant Expired - Lifetime EP1339975B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10059007A DE10059007A1 (de) 2000-11-28 2000-11-28 Brennstoffeinspritzventil
DE10059007 2000-11-28
PCT/DE2001/004403 WO2002044551A1 (fr) 2000-11-28 2001-11-26 Soupape d'injection de carburant

Publications (2)

Publication Number Publication Date
EP1339975A1 EP1339975A1 (fr) 2003-09-03
EP1339975B1 true EP1339975B1 (fr) 2004-12-08

Family

ID=7664946

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01998732A Expired - Lifetime EP1339975B1 (fr) 2000-11-28 2001-11-26 Soupape d'injection de carburant

Country Status (9)

Country Link
US (1) US20030127547A1 (fr)
EP (1) EP1339975B1 (fr)
JP (1) JP2004514834A (fr)
KR (1) KR20020072292A (fr)
CN (1) CN1396987A (fr)
BR (1) BR0107840A (fr)
DE (2) DE10059007A1 (fr)
RU (1) RU2003116891A (fr)
WO (1) WO2002044551A1 (fr)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6659074B2 (en) * 2002-05-08 2003-12-09 General Motors Corporation Spark ignition direct injection engine with shaped multihole injectors
JP4099075B2 (ja) * 2002-05-30 2008-06-11 株式会社日立製作所 燃料噴射弁
US7021570B2 (en) * 2002-07-29 2006-04-04 Denso Corporation Fuel injection device having injection hole plate
US6921022B2 (en) 2003-01-09 2005-07-26 Siemens Vdo Automotive Corporation Spray pattern control with non-angled orifices formed on dimpled fuel injection metering disc having a sac volume reducer
US7051957B1 (en) * 2004-11-05 2006-05-30 Visteon Global Technologies, Inc. Low pressure fuel injector nozzle
US7137577B2 (en) * 2004-11-05 2006-11-21 Visteon Global Technologies, Inc. Low pressure fuel injector nozzle
US7168637B2 (en) * 2004-11-05 2007-01-30 Visteon Global Technologies, Inc. Low pressure fuel injector nozzle
US7185831B2 (en) * 2004-11-05 2007-03-06 Ford Motor Company Low pressure fuel injector nozzle
US7438241B2 (en) * 2004-11-05 2008-10-21 Visteon Global Technologies, Inc. Low pressure fuel injector nozzle
US7198207B2 (en) * 2004-11-05 2007-04-03 Visteon Global Technologies, Inc. Low pressure fuel injector nozzle
US7104475B2 (en) * 2004-11-05 2006-09-12 Visteon Global Technologies, Inc. Low pressure fuel injector nozzle
US7124963B2 (en) * 2004-11-05 2006-10-24 Visteon Global Technologies, Inc. Low pressure fuel injector nozzle
CN100404847C (zh) * 2005-07-29 2008-07-23 比亚迪股份有限公司 燃油喷射器
JP4906466B2 (ja) * 2006-10-16 2012-03-28 日立オートモティブシステムズ株式会社 燃料噴射弁およびそれを搭載した内燃機関の燃料噴射装置
DE102008041545A1 (de) 2008-08-26 2010-03-04 Robert Bosch Gmbh Verfahren zur Fertigung eines Dosierventils
DE102010029298A1 (de) * 2010-05-26 2011-12-01 Robert Bosch Gmbh Ventilanordnung zur Dosierung eines fluiden Mediums in einen Abgasstrang einer Brennkraftmaschine
DE102011085974A1 (de) * 2011-11-09 2013-05-16 Robert Bosch Gmbh Brennstoffeinspritzventil
JP5961383B2 (ja) 2012-01-11 2016-08-02 日立オートモティブシステムズ株式会社 燃料噴射弁
CN102642798A (zh) * 2012-04-10 2012-08-22 金坛市精锐机械科技有限公司 防滴漏防挂丝液体灌装阀
CN104334865A (zh) * 2012-05-11 2015-02-04 丰田自动车株式会社 燃料喷射阀及配备有该燃料喷射阀的燃料喷射装置
JP5748796B2 (ja) * 2013-04-16 2015-07-15 三菱電機株式会社 燃料噴射弁
JP6289143B2 (ja) * 2013-07-23 2018-03-07 株式会社エンプラス 燃料噴射装置用ノズルプレート
US20160237969A1 (en) * 2013-11-07 2016-08-18 Hitachi Automotive Systems, Ltd. Fuel Injection Valve
DE102017218224A1 (de) * 2017-10-12 2019-04-18 Robert Bosch Gmbh Ventil zum Zumessen eines Fluids, insbesondere Brennstoffeinspritzventil
DE102018218678A1 (de) * 2018-10-31 2020-04-30 Robert Bosch Gmbh Ventil zum Zumessen eines Fluids, insbesondere Brennstoffeinspritzventil
CN113260783B (zh) * 2019-01-16 2022-08-19 三菱电机株式会社 燃料喷射装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4621772A (en) * 1985-05-06 1986-11-11 General Motors Corporation Electromagnetic fuel injector with thin orifice director plate
US4971254A (en) * 1989-11-28 1990-11-20 Siemens-Bendix Automotive Electronics L.P. Thin orifice swirl injector nozzle
DE4123692C2 (de) * 1991-07-17 1995-01-26 Bosch Gmbh Robert Brennstoffeinspritzventil
US5540200A (en) * 1993-12-28 1996-07-30 Nissan Motor Co., Ltd. Fuel injection valve
US5484108A (en) 1994-03-31 1996-01-16 Siemens Automotive L.P. Fuel injector having novel multiple orifice disk members
DE19523165B4 (de) * 1994-06-29 2005-11-17 Bosch Automotive Systems Corp. Kraftstoffeinspritzdüse
US5489065A (en) * 1994-06-30 1996-02-06 Siemens Automotive L.P. Thin disk orifice member for fuel injector
DE19703200A1 (de) * 1997-01-30 1998-08-06 Bosch Gmbh Robert Brennstoffeinspritzventil
JPH1172067A (ja) 1997-06-24 1999-03-16 Toyota Motor Corp 内燃機関の燃料噴射弁
DE19804463B4 (de) 1998-02-05 2006-06-14 Daimlerchrysler Ag Kraftstoffeinspritzsystem für Ottomotoren
US6029913A (en) * 1998-09-01 2000-02-29 Cummins Engine Company, Inc. Swirl tip injector nozzle

Also Published As

Publication number Publication date
JP2004514834A (ja) 2004-05-20
US20030127547A1 (en) 2003-07-10
RU2003116891A (ru) 2005-01-20
EP1339975A1 (fr) 2003-09-03
DE10059007A1 (de) 2002-05-29
CN1396987A (zh) 2003-02-12
KR20020072292A (ko) 2002-09-14
DE50104792D1 (de) 2005-01-13
WO2002044551A1 (fr) 2002-06-06
BR0107840A (pt) 2002-10-22

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