EP1434940A1 - Dispositif injecteur - Google Patents

Dispositif injecteur

Info

Publication number
EP1434940A1
EP1434940A1 EP02800537A EP02800537A EP1434940A1 EP 1434940 A1 EP1434940 A1 EP 1434940A1 EP 02800537 A EP02800537 A EP 02800537A EP 02800537 A EP02800537 A EP 02800537A EP 1434940 A1 EP1434940 A1 EP 1434940A1
Authority
EP
European Patent Office
Prior art keywords
nozzle
connection
nozzle device
clamping part
body part
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.)
Granted
Application number
EP02800537A
Other languages
German (de)
English (en)
Other versions
EP1434940B1 (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

Links

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 main parts connected to one another, comprising a body part and a nozzle part, the nozzle part being connected to the body part via a positive connection.
  • Such a nozzle device is shown in EP 0 449 763 B1, see .
  • Figure 1 and Figure 2 and from EP 0 451 408 AI, see Figure 1.
  • Each of these known nozzle devices is intended for use in a fuel injection system for an internal combustion engine and comprises, as presently essential components, a nozzle part, which carries the nozzles intended for injecting the fuel, and a body part, to which the nozzle part is connected and which are of further functional importance Components of the nozzle device, in particular a nozzle needle, guides and the like, and which also serves to fasten the nozzle device to other components of the injection system or the internal combustion engine.
  • the body part and the nozzle part are connected to one another via a screw connection.
  • one of the two main parts has an external thread and a clamping part in the manner of a nut with an internal thread is molded onto the corresponding other main part.
  • the clamping part with the internal thread is molded onto the body part and the nozzle part ending with a flange is clamped to the body part by means of a sleeve, which carries an external thread and is screwed into the internal thread of the clamping part.
  • the invention is based on the object of specifying a nozzle device which avoids the problems which occur in the production of the previous nozzle devices and in which the axial force which arises when tightening is clearly and reproducibly defined.
  • a nozzle device is provided with two main parts connected to one another, comprising a body part and a nozzle part, the nozzle part being connected to the body part via a positive connection, and according to the invention the connection being established via an integral partial connection.
  • connection connecting the body part and the nozzle part is accordingly generated not only via a frictional connection as before, but via a material connection. It is possible to adjust the force between the body part and the nozzle part to an appropriate level, regardless of the requirements of the manufacturing process Value. The difficulties that arise in the manufacture of a screw connection are thus avoided.
  • the partial connection is preferably a welded connection.
  • This weld joint can be formed, after which were clamped together with each other to 'genetic Dende parts of the nozzle means in a corresponding clamping device in a predetermined and reproducible manner.
  • the sub-link also preferably defines a closed line and is therefore not.-About as a unit as an assembly of Ei 'generated nzel-part compounds.' Diei ensures maximum resilience and durability of the connection. : . , .. ... .. ' • •
  • the clamping part in the nozzle device preferably has no screw thread, but is smooth on all surfaces that are used functionally. , _. ,
  • clamping part is preferably molded onto one of the main parts to be connected to one another, in particular onto the nozzle part.
  • a particularly preferred embodiment of the nozzle device is characterized in that the clamping part projects over a sleeve which is inserted into a recess in a main part, and the partial connection is formed between the clamping part and the sleeve.
  • a sleeve can then be used, which is inserted into a corresponding recess in the body part and, when the nozzle part is clamped with the body part, is surmounted by the clamping part molded onto the nozzle part.
  • the form-fitting partial connection required for the connection can then be designed as a welded connection between the clamping part and the sleeve, for example by laser welding.
  • the nozzle part of the nozzle device is preferably circular cylinder symmetrical.
  • 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 to use such a nozzle device in a common rail
  • Injection device for a multi-cylinder diesel engine is a multi-cylinder diesel engine.
  • FIG. 1 and FIG. 2 show views of a nozzle device
  • FIGS. 3 to 6 show exemplary embodiments for the sleeve for use in the nozzle device shown in the previous figures.
  • FIGS. 1 and 2 represent the same exemplary embodiment, FIG. 2 being an enlarged representation of the part of FIG. 1 encircled in the figure and designated with a Z, these two figures are dealt with below together.
  • the nozzle device comprises two main parts 1 and 2 connected to one another, namely a body part 1 and a nozzle part 2.
  • both main parts 1 and 2 are circular-cylindrical symmetrical with respect to the axis 7.
  • the nozzle part 2 carries 8 nozzles at a pointed end inject a fluid, which in the special case is diesel fuel.
  • Molded onto the nozzle part 2 is a clamping part 3 in the form of a ring, which partially projects over the body part 1 in the assembled state. In this case, the clamping part 3 projects beyond a recess 6 provided in the body part 1, in which a sleeve 5 is arranged, which is in positive engagement with the body part 1 and the clamping part 3.
  • the body part 1 and the nozzle part 2 are first pressed against one another with a predetermined force.
  • the cohesive connection part 4 is formed, namely, in this case as a weld connection, 'the a closed L-inie forms and the clamping part 3 entirely, and the sleeve 4 partially penetrates. In this way, the clamping part 3 and the sleeve. 4. cohesively bonded together.
  • the frictional connection between the nozzle part '2 and the " body part 1 is further achieved via the sleeve 5> -which is frictional with the body part 1.
  • Figures 3 to 6 show four embodiments of this sleeve 5, the sleeve 5 being interrupted in each embodiment. In this way, it can be pushed relatively easily over the body part 1 and introduced into the recess 6 - see FIGS. 1 and 2.
  • the circumferential welded connection 4 ensures that the interruptions in the sleeve 5 due to the welding also occur the clamping part 3 have no functional effect on the nozzle device.
  • the nozzle device according to the invention is particularly simple to manufacture and is distinguished by the best functional properties.

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)

Abstract

L'invention concerne un dispositif injecteur comprenant deux parties principales reliées entre elles, à savoir une partie corps (1) et une partie injecteur (2). La partie injecteur (2) est reliée à la partie corps (1) par une liaison de forme (3, 4, 5) qui est constituée au moyen d'une liaison de matière partielle (4). Le dispositif injecteur selon l'invention est utilisable de préférence dans un dispositif d'injection de carburant pour un moteur à combustion interne.
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 true EP1434940A1 (fr) 2004-07-07
EP1434940B1 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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03031805A1 *

Also Published As

Publication number Publication date
WO2003031805A1 (fr) 2003-04-17
EP1434940B1 (fr) 2005-01-12
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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