EP1434940B1 - Dispositif injecteur - Google Patents

Dispositif injecteur Download PDF

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Publication number
EP1434940B1
EP1434940B1 EP02800537A EP02800537A EP1434940B1 EP 1434940 B1 EP1434940 B1 EP 1434940B1 EP 02800537 A EP02800537 A EP 02800537A EP 02800537 A EP02800537 A EP 02800537A EP 1434940 B1 EP1434940 B1 EP 1434940B1
Authority
EP
European Patent Office
Prior art keywords
connection
nozzle
body part
sleeve
injector according
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
EP02800537A
Other languages
German (de)
English (en)
Other versions
EP1434940A1 (fr
Inventor
Martin Neumaier
Karin Wels
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP1434940A1 publication Critical patent/EP1434940A1/fr
Application granted granted Critical
Publication of EP1434940B1 publication Critical patent/EP1434940B1/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
    • F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting

Definitions

  • the invention relates to a nozzle device with two together connected body parts comprising a body part and a nozzle part, wherein the nozzle part via a positive Connection is connected to the body part and wherein the Connection made via a cohesive partial connection is.
  • a nozzle device is apparent from EP 0 449 763 B1, see FIG. 1 and FIG. 2, as well as from EP 0 451 408 A1, see FIG. 1.
  • Each of these known nozzle devices is intended for Use in a fuel injection system for an internal combustion engine and includes essential components herein a nozzle part, which for injection of the fuel carries certain nozzles, and a body part, with which the Nozzle part is connected and which the other functional important components of the nozzle device, in particular a Nozzle needle, guides and the like, wearing, and which also for attachment of the nozzle device to other components the injection system or the internal combustion engine is used.
  • the body part and the nozzle part are over one Screw connected together.
  • the clamping part with the Internal thread formed on the body part and it is with the a flange ending nozzle part by means of a sleeve, which carries an external thread and into the internal thread of the clamping part is screwed, clamped with the body part.
  • the document DE 199 35 261 A1 discloses a nozzle device known, comprising two interconnected main parts a body part in the form of a valve seat carrier and a Nozzle part in the form of a valve seat member comprises.
  • the valve seat element and the valve seat carrier are interconnected connected a positive connection.
  • This form-fitting Connection comprises a cohesive partial connection in Form of an annular circumferential weld between the Valve seat carrier and the valve seat element.
  • Screw connection creates a frictional torque due to friction, which tries to turn the nozzle part.
  • Such Turning should by a correspondingly strong pressing of the Nozzle part to the body part in the formation of the screw be prevented.
  • the axial force with which the Nozzle part in the finished nozzle device to the body part is strongly dependent on the coefficient of friction in the Screwed off, making it in the context of a series production
  • Such nozzle devices to strong fluctuations in this axial force can come.
  • the invention is based on the object, a nozzle device indicate which in the manufacture of the previous Avoid nozzle devices occurring problems and at the axial force, which arises when tightening clearly and reproducibly defined.
  • a nozzle device comprising two interconnected main parts a body part and a nozzle part, wherein the nozzle part over a positive connection connected to the body part is, wherein the connection via a cohesive partial connection is manufactured and whereby the connection over a Clamping part takes place, which provided in the body part Projecting recess in which a sleeve is arranged, wherein the sleeve with the body part and the clamping part in positive locking is and wherein the partial connection between the sleeve and the clamping part is cohesively.
  • the body part and connecting the nozzle part positive fit not only about a frictional connection as before, but over a material connection generated. It is possible, the force between the Body part and the nozzle part regardless of requirements of the manufacturing process in a manner appropriate to the circumstances Value to set. The difficulties that arise in the production result in a screw, are avoided.
  • the partial connection is preferably a welded connection.
  • This welded joint can be formed after the to be joined together parts of the nozzle device in one corresponding clamping device in predetermined and reproducible Were clamped together.
  • the sub-connection also preferably defines a closed one Line and thus becomes as a unit, not as Arrangement of individual partial connections, generated. The guaranteed a maximum load capacity and durability of the Connection.
  • the clamping part in the nozzle device preferably has no Screw thread on but is on all surfaces that are functional used, smooth.
  • the clamping part is at one of the each other molded to be joined main parts, in particular to the nozzle part.
  • a particularly preferred embodiment of the nozzle device is characterized in that the clamping part is a sleeve, which is inserted in a recess in a main part, surmounted, and the partial connection between the clamping part and the sleeve is formed.
  • This has the particular advantage that it is not with regard to the partial connection to be produced on the selection of both the material for the body part as also the material for the nozzle part arrives. Especially it may happen that the material of the body part only bad for welding, which is the formation of a corresponding Partial connection directly to the body part at least substantially would complicate. On the other hand, it is easily possible for the nozzle part to a good weldable material choose.
  • a sleeve can be used, which in a corresponding recess of the body part is inserted and when bracing the nozzle part with the body part of that the nozzle part molded clamping part is surmounted.
  • the for the connection necessary form-fitting partial connection can then as a welded joint between the clamping part and the Sleeve are performed, for example by laser welding.
  • the nozzle part of the nozzle device is preferably circular-cylindrical.
  • the nozzle device is particularly preferably used in a fuel injection device for an internal combustion engine.
  • a fuel injection device for an internal combustion engine In particular, it is considered such a nozzle device to be used in a common rail injection device for a diesel engine with several cylinders.
  • Figure 1 and Figure 2 show views of a Nozzle means
  • FIGS. 3 to 6 show exemplary embodiments for the sleeve used in the in the previous figures illustrated nozzle device.
  • FIGS. 1 and 2 represent the same embodiment, Figure 2 is an enlarged view of the in Figure circled and designated by a Z part of 1, these two figures will be common below dealt with.
  • the nozzle device comprises two interconnected Main parts 1 and 2, namely a body part 1 and a nozzle part 2.
  • Main parts 1 and 2 In the area of their connection 3, 4, 5 are both main parts 1 and 2 with respect to the axis 7 circular-cylindrical symmetry.
  • the nozzle part 2 carries at a pointed end 8 nozzles for ejection a fluid, which in the special case diesel fuel is.
  • Formed on the nozzle part 2 is a clamping part 3 in the form of a ring which the body part 1 in assembled Condition partly surmounted.
  • connection 3, 4, 5 are after assembly the parts mentioned first the body part 1 and the nozzle part 2 pressed against each other with a predetermined force. Subsequently, the cohesive partial connection 4 is formed, in the present case as a welded joint, which is a closed Line forms and the tension part 3 all as well as the Sleeve 4 partially penetrates. That's the way it is Clamping part 3 and the sleeve. 4 materially interconnected. The adhesion between the nozzle part 2 and the Body part 1 is further achieved via the sleeve 5, which is in frictional connection with the body part 1.
  • Figures 3 to 6 show four Embodiments of this sleeve 5, wherein in each embodiment the sleeve 5 is interrupted. In this way It can be pushed over the body part 1 relatively easily and are introduced into the recess 6 - see figures 1 and 2.
  • the circumferential weld 4 ensures that the production - related interruptions in the Sleeve 5 due to the welding with the clamping part 3 no have functional effect on the nozzle device.
  • the nozzle device according to the invention is particularly simple to manufacture and is characterized by best functional properties out.

Landscapes

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

Claims (8)

  1. Injecteur comportant deux parties principales (1, 2) reliées l'une à l'autre, comprenant une partie corps (1) et une partie buse (2), la partie buse (2) étant reliée avec la partie corps (1) par un assemblage (3, 4, 5) par coopération de formes et l'assemblage (3, 4, 5) étant réalisé avec un assemblage partiel (4) par liaison de matière, caractérisé en ce que l'assemblage (3, 4, 5) est réalisé au moyen d'une pièce de serrage laquelle dépasse un évidement (6) prévu dans la partie corps (1) dans lequel un manchon (5) est disposé, le manchon (5) étant assemblé par coopération de formes avec la partie corps (1) et la pièce de serrage (3) et en ce que l'assemblage partiel (4) entre le manchon (5) et la pièce de serrage (3) est réalisé par liaison de matière.
  2. Injecteur selon la revendication 1, caractérisé en ce que l'assemblage partiel (4) est une soudure (4).
  3. Injecteur selon l'une quelconque des revendications 1 et 2 dans lequel l'assemblage partiel (4) définit une ligne fermée.
  4. Injecteur selon la revendication 3, caractérisé en ce que la pièce de serrage (3) ne comprend pas de filetage de vis.
  5. Injecteur selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la pièce de serrage (3) est formée sur l'une des parties principales (1, 2) reliées l'une à l'autre.
  6. Injecteur selon la revendication 5, caractérisé en ce que la pièce de serrage (3) est formée sur la partie buse (2).
  7. Injecteur selon l'une quelconque des revendications précédentes, caractérisé en ce que la partie buse (2) a une symétrie circulaire cylindrique.
  8. Dispositif d'injection de carburant pour un moteur à combustion interne comportant un injecteur selon l'une quelconque des revendications précédentes.
EP02800537A 2001-10-04 2002-10-01 Dispositif injecteur Expired - Lifetime EP1434940B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10148874 2001-10-04
DE10148874A DE10148874C2 (de) 2001-10-04 2001-10-04 Düseneinrichtung, insbesondere zur Kraftstoffeinspritzung
PCT/DE2002/003719 WO2003031805A1 (fr) 2001-10-04 2002-10-01 Dispositif injecteur

Publications (2)

Publication Number Publication Date
EP1434940A1 EP1434940A1 (fr) 2004-07-07
EP1434940B1 true EP1434940B1 (fr) 2005-01-12

Family

ID=7701317

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02800537A Expired - Lifetime EP1434940B1 (fr) 2001-10-04 2002-10-01 Dispositif injecteur

Country Status (5)

Country Link
US (1) US6974089B2 (fr)
EP (1) EP1434940B1 (fr)
JP (1) JP2005504922A (fr)
DE (2) DE10148874C2 (fr)
WO (1) WO2003031805A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2875855B1 (fr) * 2004-09-27 2006-12-22 Snecma Moteurs Sa Turboreacteur avec un bras monobloc de raccord de servitudes et le bras monobloc de raccord de servitudes
US8166763B2 (en) * 2006-09-14 2012-05-01 Solar Turbines Inc. Gas turbine fuel injector with a removable pilot assembly
DE102006049532A1 (de) * 2006-10-20 2008-04-24 Robert Bosch Gmbh Schraubverbindung für Kraftstoffinjektor
US8286433B2 (en) * 2007-10-26 2012-10-16 Solar Turbines Inc. Gas turbine fuel injector with removable pilot liquid tube
US8028512B2 (en) 2007-11-28 2011-10-04 Solar Turbines Inc. Active combustion control for a turbine engine
US7886718B2 (en) * 2008-09-26 2011-02-15 Caterpillar Inc. Fuel injector having integral body guide and nozzle case for pressure containment
DE102011081176A1 (de) 2011-08-18 2013-02-21 Robert Bosch Gmbh Ventil zum Zumessen eines strömenden Mediums
DE102013018177B4 (de) * 2013-11-29 2016-01-28 L'orange Gmbh Kraftstoffinjektormodul sowie Kraftstoffinjektor und Prüfanordnung damit

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3859996A (en) * 1973-07-18 1975-01-14 Mizzy Inc Multi-dose injector
US4778355A (en) * 1984-05-30 1988-10-18 John And Martin Holland And Associates Limited Partnership Well pump system
US4994029A (en) * 1989-09-12 1991-02-19 David Bull Laboratories Pty. Ltd. Syringe mixer and injector device
US4987887A (en) * 1990-03-28 1991-01-29 Stanadyne Automotive Corp. Fuel injector method and apparatus
GB9008403D0 (en) * 1990-04-12 1990-06-13 Lucas Ind Plc Fuel injection nozzle
DE4412948C2 (de) 1994-04-14 1998-07-23 Siemens Ag Elektrohydraulische Absperrvorrichtung
DE4442649C2 (de) 1994-11-30 1996-10-24 Siemens Ag Elektrohydraulischer Antrieb
DE19618468C1 (de) 1996-05-08 1997-04-30 Siemens Ag Einspritzventil
US5779149A (en) 1996-07-02 1998-07-14 Siemens Automotive Corporation Piezoelectric controlled common rail injector with hydraulic amplification of piezoelectric stroke
EP0931358B1 (fr) 1996-09-30 2002-02-27 Siemens Aktiengesellschaft Organe de reglage comportant un actionneur a longueur reglable et dispositif pour la transmission du deplacement d'un actionneur
DE19714486C2 (de) 1997-04-08 1999-12-30 Siemens Ag Vorrichtung zum Übertragen einer Auslenkung eines Aktors
DE19727992C2 (de) 1997-07-01 1999-05-20 Siemens Ag Ausgleichselement zur Kompensation temperaturbedingter Längenänderungen von elektromechanischen Stellsystemen
DE19757659C1 (de) 1997-12-23 1999-06-17 Siemens Ag Einspritzventil mit einer Ausgleichsfläche
DE59808465D1 (de) 1997-12-23 2003-06-26 Siemens Ag Einspritzventil mit steuerventil
DE19821768C2 (de) 1998-05-14 2000-09-07 Siemens Ag Dosiervorrichtung und Dosierverfahren
DE19822503C1 (de) 1998-05-19 1999-11-25 Siemens Ag Steuerventil für Kraftstoffeinspritzventil
DE19839125C1 (de) 1998-08-27 2000-04-20 Siemens Ag Vorrichtung und Verfahren zur Dosierung von Fluid
DE19935261A1 (de) * 1999-07-27 2001-02-01 Bosch Gmbh Robert Ventil zum dosierten Einleiten von verflüchtigtem Brennstoff in einen Ansaugkanal einer Brennkraftmaschine
DE19935262A1 (de) * 1999-07-27 2001-02-01 Bosch Gmbh Robert Brennstoffeinspritzventil

Also Published As

Publication number Publication date
WO2003031805A1 (fr) 2003-04-17
EP1434940A1 (fr) 2004-07-07
US6974089B2 (en) 2005-12-13
DE10148874A1 (de) 2003-04-30
DE10148874C2 (de) 2003-12-24
JP2005504922A (ja) 2005-02-17
DE50202021D1 (de) 2005-02-17
US20040195389A1 (en) 2004-10-07

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