EP1402171B1 - Soupape d'injection de carburant et procede de reglage - Google Patents

Soupape d'injection de carburant et procede de reglage Download PDF

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Publication number
EP1402171B1
EP1402171B1 EP02742720A EP02742720A EP1402171B1 EP 1402171 B1 EP1402171 B1 EP 1402171B1 EP 02742720 A EP02742720 A EP 02742720A EP 02742720 A EP02742720 A EP 02742720A EP 1402171 B1 EP1402171 B1 EP 1402171B1
Authority
EP
European Patent Office
Prior art keywords
setting
fuel injection
flow rate
injection valve
sleeve
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
EP02742720A
Other languages
German (de)
English (en)
Other versions
EP1402171A1 (fr
Inventor
Heinz 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.)
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 EP1402171A1 publication Critical patent/EP1402171A1/fr
Application granted granted Critical
Publication of EP1402171B1 publication Critical patent/EP1402171B1/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
    • 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
    • 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
    • F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
    • 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
    • F02M2200/24—Fuel-injection apparatus with sensors
    • 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
    • F02M2200/28—Details of throttles in fuel-injection apparatus

Definitions

  • the invention is based on a fuel injection valve according to the preamble of claim 1 and a method for Setting a fuel injector after Genus of claim 9.
  • a comparable fuel injector is known for example from DE 41 23 787 A.
  • DE 40 23 828 A1 describes a setting method a fuel injector and a Fuel injector known.
  • Medium flow rate of an electromagnetically actuated Fuel injection valve is placed in a blind hole changing magnetic properties of the inner pole magnetically conductive material, for example in the form of a powder and thus the magnetic force varies until the measured actual flow rate of the medium matches the specified target quantity.
  • DE 40 23 826 A1 proposed a alignment bolt in a blind hole Inner pole, which has a recess on its circumference, so far insert and thus vary the magnetic force until the measured actual quantity with the specified target quantity matches.
  • DE 195 16 513 A1 also describes a method for Setting the dynamic flow rate of a medium Fuel injector known.
  • One finds Adjustment of an adjusting element that is close to the Magnet coil arranged outside the medium flow path is.
  • the size of the magnetic flux changes in the magnetic circuit and thus the magnetic force, so that the Medium flow rate can be influenced and adjusted.
  • the Adjustment can be made both when wet and when dry fuel injector.
  • DE 42 11 723 A1 describes a fuel injection valve or a method for adjusting the dynamic Medium flow quantity of a fuel injector proposed, in which a longitudinal slot Adjustment sleeve up to a predetermined press-in depth a longitudinal bore of a connecting piece is pressed in, the dynamic actual volume of the valve measured and with compared to a medium target quantity and the injected, under a tension acting in the radial direction Adjustment sleeve is pushed in until the measured Actual medium quantity with the specified medium target quantity matches.
  • a disadvantage of the group of mechanical adjustment methods is particularly the high degree of inaccuracy of these procedures subject.
  • the opening and closing times a fuel injector only at the expense of shorten electrical power, thereby reducing the electrical Load on the components increases and the control units be stressed more.
  • the fuel injector according to the invention with the characterizing features of claim 1 and that Method according to the invention with the characteristic features of claim 9 has the advantage that eccentric holes in the bottom of the adjusting sleeve and in the inner sleeve used to adjust the static Flow depending on the desired amount of fuel to different degrees to a resulting Aperture cross section can be covered without the setting of the dynamic To influence flow and vice versa.
  • adjusting sleeve and Inner sleeve are simple and inexpensive to manufacture.
  • the inner sleeve is advantageously in the adjusting sleeve fixed with a snap ring, causing an adjustment the inner sleeve and thus a change in the resulting Aperture cross section during operation of the Fuel injector is avoided.
  • the static The flow rate is set safely.
  • the possibility of static is particularly advantageous Flow rate based on a preset middle aperture cross-section both by an enlargement of the aperture cross section to an unthrottled Increase maximum value as well as decrease the Reduce the aperture cross-section to almost zero.
  • Fuel injector 1 is in the Form of a fuel injector 1 for Fuel injection systems from mixture-compressing, spark-ignition 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 injector 1 consists of a Nozzle body 2, in which a valve needle 3 is arranged.
  • the valve needle 3 is operatively connected to a Valve closing body 4 with one on one Valve seat body 5 arranged valve seat surface 6 into one Sealing seat interacts.
  • the fuel injection valve 1 in the exemplary embodiment it is an inward opening fuel injector 1, which has a Spray opening 7 has.
  • the nozzle body 2 is through a Seal 8 against an outer pole 9 of a magnet coil 10 sealed.
  • the magnet coil 10 is in a coil housing 11 encapsulated and wound on a bobbin 12, which bears against an inner pole 13 of the magnet coil 10.
  • the Inner pole 13 and outer pole 9 are through a constriction 26 separated from each other and not by one another ferromagnetic connecting member 29 connected.
  • the Solenoid 10 is connected via a line 19 from one to the other an electrical plug contact 17 feedable electrical Current excited.
  • the plug contact 17 is one Surround plastic sheath 18 on the inner pole 13th can be
  • the valve needle 3 is in a valve needle guide 14 led, which is disc-shaped.
  • a paired shim 15 is used for stroke adjustment the other side of the shim 15 is the Anchor 20.
  • This stands over a first flange 21 non-positively in connection with the valve needle 3, which through a weld seam 22 with the first flange 21 connected is.
  • One is supported on the first flange 21 Return spring 23, which in the present design of the Fuel injection valve 1 through an adjusting sleeve 24 Bias is brought.
  • the position of the adjusting sleeve 24 is for the bias the return spring 23 and thus for the dynamic Flow rate through the fuel injector 1 responsible.
  • Inner sleeve 34 is provided, which in the adjusting sleeve 24th is inserted.
  • the inner sleeve 34 is cup-shaped formed and has in a bottom 35 of the inner sleeve 34 an eccentric bore 36.
  • the adjusting sleeve 24 is is also pot-shaped and is in a bottom 37 the adjusting sleeve 24 also with an eccentric Provide hole 38. Eccentric holes 36 and 38 are attached so that they are made to coincide can be.
  • FIGS. 2 and 3 A detailed description of the measures according to the invention and the functioning of Inner sleeve 34 is FIGS. 2 and 3 and the following See description.
  • valve needle guide 14 in the armature 20 and on Valve seat body 5 run fuel channels 30a to 30c.
  • the fuel is supplied via a central fuel supply 16 supplied and filtered by a filter element 25.
  • the Fuel injector 1 is against by a seal 28 a fuel line, not shown sealed.
  • a annular damping element 32 On the spray side of the armature 20 is a annular damping element 32, which consists of a Elastomer material is arranged. It's on one second flange 31, which has a weld seam 33 is non-positively connected to the valve needle 3.
  • Fig. 2 shows that in an excerpted sectional view in Fig. 1 designated II detail of the invention designed fuel injector 1 without that Filter element 25, which in Fig. 1 in the central Fuel supply 16 is arranged.
  • the adjusting sleeve 24 has a bottom 37 with an eccentrically arranged bore 38.
  • an inner sleeve 34 which is also pot-shaped with a bottom 35, in an eccentric bore 36 is attached.
  • the Inner sleeve 34 is dimensioned so that it means a snap ring 39 can be fixed in the adjusting sleeve 24.
  • the adjusting sleeve 24 is slotted accordingly executed to the assembly of the inner sleeve 34 with the Allow snap ring 39.
  • the flow rate is set accordingly against the holding force of the snap ring 39.
  • the eccentric holes 36 and 38 are so in the bottoms 35 and 37 aligned that they have a common axis exhibit.
  • the inner sleeve 34 has an engagement surface 40 for a corresponding tool, for example a polygon, by means of which the inner sleeve 34 is rotatable.
  • the adjusting sleeve 24 is first so far pressed into the fuel injector 1 until a corresponding tension of the return spring 23 desired value of the dynamic flow has been reached.
  • the static flow rate is between one unthrottled value with complete overlap of the Holes 36 and 38 and a minimum value at an almost closed aperture cross section 41 variable.
  • This arrangement is particularly advantageous Possibility of static and dynamic flow through fuel injector 1 independently of each other adjust so that the steps described above can also be carried out in reverse order.
  • Fig. 3 is a cross section through the adjusting sleeve 24 and the inner sleeve 34 shown, the section along the Line III-III in Fig. 2 is guided.
  • the aperture cross section 41 can be changed at any time possible by removing the filter element 25 from the fuel supply 16 is removed and the inner sleeve 34 opposite the Adjusting sleeve 24 rotated with a suitable tool becomes.
  • the fuel injector 1 does not need to be expanded in its entirety, components still need from the fuel injection valve 1 for setting the Flows are removed.

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)
  • Manufacturing & Machinery (AREA)
  • Fuel-Injection Apparatus (AREA)

Claims (14)

  1. Injecteur de carburant (1) pour un système d'injection de carburant applicable à des moteurs à combustion interne, notamment pour l'injection directe de carburant dans la chambre de combustion du moteur, comprenant un actionneur (10), une aiguille d'injecteur (3) coopérant avec l'actionneur (10) et sollicitée dans le sens de la fermeture par un ressort de rappel (23) pour actionner un organe d'obturation de soupape (4) formant un siège d'étanchéité avec une surface de siège de soupape (6) ainsi qu'un manchon de réglage (24) mettant en précontrainte le ressort de rappel (23),
    caractérisé en ce que
    le manchon de réglage (24) a la forme d'un pot et son fond (37) comporte un perçage (38) présentant un chevauchement variable avec un perçage (36) du fond (35) d'un manchon intérieur (34) également en forme de pot et qui se glisse dans le manchon de réglage (24).
  2. Injecteur selon la revendication 1,
    caractérisé en ce que
    les perçages (36, 38) sont excentrés dans leur fond (35, 37).
  3. Injecteur selon la revendication 1 ou 2,
    caractérisé en ce que
    la position des perçages excentrés (36, 38) l'un par rapport à l'autre définit une section de diaphragme (41) résultante.
  4. Injecteur selon l'une des revendications 1 à 3,
    caractérisé en ce que
    le manchon intérieur (34) est installé de manière réglable dans le manchon de réglage (24) de façon que la quantité de carburant qui arrive dans l'injecteur (1) par unité de temps dépend de la section résultante du diaphragme (41).
  5. Injecteur selon l'une des revendications 1 à 4,
    caractérisé en ce que
    le manchon intérieur (34) comporte une surface de prise (40) pour un outil de réglage.
  6. Injecteur selon la revendication 5,
    caractérisé en ce que
    le manchon intérieur (34) peut être tourné à l'aide d'un outil de réglage dans le manchon de réglage (24).
  7. Injecteur selon l'une des revendications 1 à 6,
    caractérisé en ce que
    le manchon intérieur (34) se bloque dans le manchon de réglage (24) à l'aide d'un circlip (39).
  8. Injecteur selon l'une des revendications 1 à 7,
    caractérisé en ce que
    le manchon de réglage (24) est fendu.
  9. Procédé de réglage d'un injecteur de carburant (1) d'un système d'injection de carburant pour un moteur à combustion interne, notamment pour l'injection directe de carburant dans la chambre de combustion d'un moteur, comprenant un actionneur (10), une aiguille d'injecteur (3) coopérant avec l'actionneur (10) et sollicitée dans le sens de la fermeture par un ressort de rappel (23) pour actionner un organe d'obturation de soupape (4) formant un siège d'étanchéité avec une surface de siège de soupape (6) ainsi qu'un manchon (24) qui sollicite le ressort de rappel (23) avec précontrainte,
    le manchon de réglage (24) étant en forme de pot et son fond (37) comporte un perçage (38) qui, coopérant avec le perçage (36) du fond (35) d'un manchon intérieur (34) également en forme de pot, engagé dans le manchon de réglage (24), présente un chevauchement variable, procédé comprenant les étapes suivantes :
    réglage du débit statique de l'injecteur de carburant (1),
    réglage du débit dynamique de l'injecteur de carburant (1).
  10. Procédé selon la revendication 9,
    caractérisé en ce que
    la première étape du procédé comprend les étapes partielles suivantes :
    mesure d'un débit réel statique de l'injecteur (1),
    comparaison du débit réel mesuré à un débit de consigne statique et
    réglage du manchon intérieur (34) dans le manchon de réglage (24) jusqu'à ce que le débit réel corresponde au débit de consigne statique.
  11. Procédé selon la revendication 10,
    caractérisé en ce qu'
    on règle le manchon intérieur (34) en le tournant dans le manchon de réglage (24) à l'aide d'un outil de réglage.
  12. Procédé selon l'une des revendications 9 à 11,
    caractérisé en ce que
    la seconde étape du procédé comprend les étapes partielles suivantes :
    mesure du débit réel dynamique de l'injecteur de carburant (1),
    comparaison du débit réel mesuré et d'un débit de consigne dynamique et
    réglage du manchon de réglage (24) de l'injecteur (1) jusqu'à ce que le débit réel corresponde au débit de consigne dynamique.
  13. Procédé selon la revendication 12,
    caractérisé en ce qu'
    on règle le manchon (24) en le coulissant à l'aide d'un outil.
  14. Procédé selon l'une des revendications 9 à 13,
    caractérisé en ce qu'
    on règle le débit statique en tournant le manchon intérieur (34) et en réglant le débit dynamique par coulissement axial du manchon de réglage (24) d'une manière indépendante.
EP02742720A 2001-06-22 2002-05-07 Soupape d'injection de carburant et procede de reglage Expired - Lifetime EP1402171B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10130239A DE10130239A1 (de) 2001-06-22 2001-06-22 Brennstoffeinspritzventil und Verfahren zu dessen Einstellung
DE10130239 2001-06-22
PCT/DE2002/001643 WO2003001050A1 (fr) 2001-06-22 2002-05-07 Soupape d'injection de carburant et procede de reglage

Publications (2)

Publication Number Publication Date
EP1402171A1 EP1402171A1 (fr) 2004-03-31
EP1402171B1 true EP1402171B1 (fr) 2004-12-08

Family

ID=7689140

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02742720A Expired - Lifetime EP1402171B1 (fr) 2001-06-22 2002-05-07 Soupape d'injection de carburant et procede de reglage

Country Status (6)

Country Link
US (1) US6915960B2 (fr)
EP (1) EP1402171B1 (fr)
JP (1) JP4221287B2 (fr)
KR (1) KR20030036710A (fr)
DE (2) DE10130239A1 (fr)
WO (1) WO2003001050A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10037571A1 (de) * 2000-08-02 2002-02-14 Bosch Gmbh Robert Brennstoffeinspritzventil und Verfahren zu dessen Einstellung
WO2003078052A1 (fr) 2002-03-11 2003-09-25 Battelle Memorial Institute Reacteurs a microcanaux a regulation thermique
JP3975352B2 (ja) * 2002-10-30 2007-09-12 株式会社デンソー 噴射装置の動的流量調整方法
DE102013225834A1 (de) * 2013-12-13 2015-06-18 Robert Bosch Gmbh Brennstoffeinspritzventil
DE102016217415B4 (de) 2016-09-13 2022-02-17 Vitesco Technologies GmbH Verfahren und Vorrichtung zum Kalibrieren von Kraftstoffinjektoren mit Leerhub
DE102018220385A1 (de) * 2018-11-28 2020-05-28 Robert Bosch Gmbh Einspritzventil für ein Wassereinspritzsystem eines Verbrennungsmotors sowie Wassereinspritzsystem mit einem solchen Einspritzventil
US11454200B2 (en) * 2019-11-08 2022-09-27 Delphi Technologies Ip Limited Fuel system with an arrangement which seals between a fuel injector and a fuel rail socket

Family Cites Families (19)

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Publication number Priority date Publication date Assignee Title
US3387790A (en) * 1967-04-11 1968-06-11 Bosch Arma Corp Fuel injection nozzle
US3398936A (en) * 1966-08-02 1968-08-27 Curtiss Wright Corp Fuel injection pintle
US3567133A (en) * 1968-06-25 1971-03-02 Ambac Ind Pressure adjusting means for fuel injection nozzles
DE2711391A1 (de) * 1977-03-16 1978-09-21 Bosch Gmbh Robert Kraftstoffeinspritzduese
GB8709712D0 (en) * 1987-04-24 1987-05-28 Lucas Ind Plc Fuel injection nozzle
DE3735288A1 (de) * 1987-10-17 1989-04-27 Pierburg Gmbh Elektromagnetisches einspritzventil fuer brennkraftmaschinen
JPH01138366A (ja) 1987-11-23 1989-05-31 Nippon Denso Co Ltd 内燃機関用電磁式燃料噴射弁
DE4023826A1 (de) * 1990-07-27 1992-01-30 Bosch Gmbh Robert Verfahren zur einstellung eines ventils und ventil
DE4023828A1 (de) * 1990-07-27 1992-01-30 Bosch Gmbh Robert Verfahren zur einstellung eines ventils und ventil
DE4038142C1 (en) * 1990-11-30 1992-04-09 Pierburg Gmbh, 4040 Neuss, De Fuel injection valve for IC-engine - has spring loaded valve closure with magnetic actuator and throttled duct
DE4109868A1 (de) * 1991-03-26 1992-10-01 Bosch Gmbh Robert Einstellbuchse fuer ein elektromagnetisch betaetigbares ventil und verfahren zur herstellung
DE4123787A1 (de) * 1991-07-18 1993-01-21 Bosch Gmbh Robert Verfahren zur einstellung eines brennstoffeinspritzventils und brennstoffeinspritzventil
DE4211723A1 (de) * 1992-04-08 1993-04-15 Bosch Gmbh Robert Verfahren zur herstellung und verfahren zur einstellung eines ventils
DE19512338A1 (de) * 1994-05-10 1995-11-16 Bosch Gmbh Robert Vorrichtung und Verfahren zum Einstellen eines Ventilhubs
DE4431128A1 (de) * 1994-09-01 1996-03-07 Bosch Gmbh Robert Verfahren zur Einstellung eines Ventils und Ventil
DE19516513A1 (de) * 1995-05-05 1996-11-07 Bosch Gmbh Robert Verfahren zur Einstellung eines Ventils und Ventil
DE19758660B4 (de) * 1997-01-08 2004-01-22 Sonplas Gmbh Verfahren zur Einstellung des Brennstoffdurchflusses von Bauteilöffnungen für Einspritzventile
DE10037571A1 (de) * 2000-08-02 2002-02-14 Bosch Gmbh Robert Brennstoffeinspritzventil und Verfahren zu dessen Einstellung
DE10037570A1 (de) * 2000-08-02 2002-02-14 Bosch Gmbh Robert Brennstoffeinspritzventil und Verfahren zu dessen Einstellung

Also Published As

Publication number Publication date
KR20030036710A (ko) 2003-05-09
WO2003001050A1 (fr) 2003-01-03
US20040011898A1 (en) 2004-01-22
US6915960B2 (en) 2005-07-12
DE10130239A1 (de) 2003-01-02
JP4221287B2 (ja) 2009-02-12
DE50201739D1 (de) 2005-01-13
JP2004521251A (ja) 2004-07-15
EP1402171A1 (fr) 2004-03-31

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