EP1105641B1 - Soupape d'admission de carburant - Google Patents

Soupape d'admission de carburant Download PDF

Info

Publication number
EP1105641B1
EP1105641B1 EP00940207A EP00940207A EP1105641B1 EP 1105641 B1 EP1105641 B1 EP 1105641B1 EP 00940207 A EP00940207 A EP 00940207A EP 00940207 A EP00940207 A EP 00940207A EP 1105641 B1 EP1105641 B1 EP 1105641B1
Authority
EP
European Patent Office
Prior art keywords
valve
fuel injection
guide
injection valve
valve seat
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
EP00940207A
Other languages
German (de)
English (en)
Other versions
EP1105641A1 (fr
Inventor
Hubert Stier
Dieter Maier
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 EP1105641A1 publication Critical patent/EP1105641A1/fr
Application granted granted Critical
Publication of EP1105641B1 publication Critical patent/EP1105641B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F02M61/04—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
    • F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
    • F02M61/12—Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies
    • 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

Definitions

  • the invention relates to a fuel injection valve according to the preamble of the main claim.
  • a fuel injection valve which has a valve seat body on which rests a guide element having a central passage opening through which a valve needle can move axially.
  • This inner passage opening in the guide element is manufactured very precisely with small tolerances, since the axially movable valve needle is guided in it. Outside this central passage opening a plurality of through holes is introduced to the flow passage in the guide element, which are themselves circular and otherwise uniformly annular in the guide element. The fuel flow path is therefore outside the central passage opening.
  • a thin filter element is additionally formed as a further component.
  • a central annular filter zone countless circular filter openings are provided.
  • the filter element completely covers the guide element with its through holes.
  • the guide body consists of a disc-shaped upper part and a downstream in the downstream direction, tapered lower part. With the upper part, the guide body rests on the upstream end face of the valve seat body, while the conical lower part with the conical seat opening, which represents the extended valve seat surface, fits snugly. In this way, a secure support of the guide body is achieved.
  • the conical lower part must be made with great effort exactly to ensure the accuracy of fit in the conical seat opening.
  • the running length of the fuel in the flow regions, since they are formed in the thickest portion of the guide body extends.
  • the fuel injection valve according to the invention with the features of claim 1 has the advantage that in a simple manner, a functional integration is achieved, which is achieved by a simplified manufacturability and a reduced number of manufacturing processes particularly cost.
  • the functional integration is achieved in that in an executed as a guide member for axial guidance of a valve needle only an opening is provided which serves both as a guide opening and as a flow opening.
  • the guide disk has a thickness of about 80 .mu.m to 150 .mu.m.
  • the inner through hole is made in the guide disc by means of punching.
  • an opening is thus introduced in a method step, with both the leadership of the valve needle is taken over and the passage of the fuel is realized.
  • Openings are not needed in the guide disc, so that no further manufacturing processes are necessary.
  • FIG. 1 a partially illustrated fuel injection valve with a guide disc according to the invention and FIG. 2 a guide plate in a plan view.
  • FIG. 1 For example, as an embodiment, a valve in the form of an injector for fuel injection systems of mixture-compression spark-ignition internal combustion engines is partially shown.
  • the injection valve has a tubular valve seat carrier 1 in which a longitudinal opening 3 is formed concentrically to a valve longitudinal axis 2.
  • a longitudinal opening 3 In the longitudinal opening 3, an axially movable valve needle 5 is arranged, which at its downstream end 6 a z.
  • B. cylindrical valve closing body 7 has.
  • the actuation of the injection valve takes place in a known manner, for example electromagnetically.
  • a schematically indicated electromagnetic circuit with a solenoid 10, an armature 11 and a core 12.
  • the armature 11 is connected to the valve closing body. 7 opposite end of the valve needle 5 by z. B. a weld by means of a laser and aligned with the core 12.
  • the injection valve may also be actuated piezoelectric or magnetostrictive.
  • a valve seat body 16 is mounted on the downstream, the core 12 remote from the end of the valve seat carrier 1 in the concentric to the valve longitudinal axis 2 extending longitudinal opening 3 by welding tight.
  • valve seat 18 facing a contour of a ball portion having valve closing body 7 cooperates with the frustoconically tapered valve seat 18 of the valve seat body 16 in the flow direction.
  • the perforated disc 21 has at least one, for example four formed by eroding, punching or etching ejection openings 36.
  • a retaining edge of the perforated disc 21 is conically bent outwardly so that it rests against the defined by the longitudinal opening 3 inner wall of the valve seat carrier 1, wherein a radial Pressing is present.
  • the perforated disc 21 is tightly connected to the wall of the valve seat carrier 1, for example by welding.
  • the insertion depth of the valve seat body 16 determines the size of the stroke of the valve needle 5.
  • the one end position of the valve needle 5 is fixed at non-energized solenoid 10 by the system of the valve closing body 7 on the valve seat 18, while the other end position of the valve needle 5 with energized solenoid. 1 results from the investment of the armature 11 at the lower end of the core.
  • the guide plate 33 serves the radial guidance of the valve needle 5 during its axial movement in the longitudinal opening 3 to avoid excessive wear on the valve seat 18 and asymmetric flow conditions between the valve seat 18 and the ejection openings 36.
  • the guide plate 33 also fulfills a fürströmfunktion for Fuel, so that it can pass from the valve interior upstream of the guide plate 33 to the valve seat 18 out.
  • the guide disk 33 has a thickness of about 80 microns to 150 microns.
  • the production of the guide plate 33 by means of stamping, etching or electroforming (LIGA, MIGA technique).
  • FIG. 2 shows a guide plate 33 as a single component in a plan view.
  • a central through hole 43 is provided, which a circular shape is deviating shaped.
  • the guide disk 33 has over the circumference of the through hole 43 seen a plurality of spaced guide portions 44, which specify a slightly larger diameter than the outer diameter of the valve closing body 7 of the valve needle 5. These dimensional differences lead to a minimum clearance of about 10 microns.
  • constricting guide portions 44 are circumferentially distributed flow regions 45 which extend the opening width of the through hole 43. As seen over the circumference of the through-hole 43, guiding areas 44 and flow areas 45 are thus present alternately at its boundary edge. Advantageously, three to six such regions 44, 45 are formed. In FIG. 2 is a guide plate 33, each with five guide portions 44 and flow regions 45 shown.
  • the attachment of the guide plate 33 takes place, for example, with four offset by 90 ° from each other, achievable by means of a laser welds.
  • the guide plate 33 is centered during assembly with a pin having a slightly larger diameter than the valve closing body 7, the valve seat 18. In the centered state, the guide plate 33 is pressed against the end face 32 of the valve seat body 16 and subsequently z. B. attached with a resistance welding or with a laser welding. When installed, the guide plate 33 is located with its upper, the valve seat body 16 opposite end face z. B. on an optionally installable sleeve-shaped support member 48 at.
  • valve seat carrier 1 with its upper end face in its outer region at a level or at a paragraph of the valve seat carrier 1, similar to the Scriptures US 5,642,862 known to plant.
  • the fixing of the valve seat body 16 in the valve seat carrier 1 can be done instead of welds, for example by means of flanging.
  • valve seat body 16 and guide disc 33 Possible methods for connecting valve seat body 16 and guide disc 33 are e.g. Laser welding, resistance welding, soldering or clamping.
  • the inner through hole 43 in the guide disk 33 is e.g. introduced by punching.

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)
  • Fuel-Injection Apparatus (AREA)

Claims (9)

  1. Injecteur de carburant pour des installations d'injection de carburant de moteurs à combustion interne comportant un axe longitudinal d'injecteur (2) avec une aiguille d'injecteur (5) mobile le long de cet axe longitudinal (2), un organe d'obturation de soupape (7) faisant partie de l'aiguille d'injecteur (5) qui coopère avec un siège de soupape fixe (18), une rondelle de guidage (33) installée en amont du siège de soupape (18), cette rondelle ayant un perçage central traversant (43) dans lequel l'aiguille d'injecteur (5) est mobile axialement et par lequel l'aiguille d'injecteur (5) est guidée dans son mouvement axial, l'orifice traversant (43) de la rondelle de guidage (33) ayant à sa périphérie une alternance de régions de guidage (44) et de régions de passage (45),
    le degré d'ouverture de l'orifice traversant (43) fixé par les régions de guidage (44) étant inférieur au degré d'ouverture fixé par les régions de passage (45),
    caractérisé en ce que
    la rondelle de guidage (33) a une épaisseur comprise entre 80 µm et 150 µm.
  2. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    la rondelle de guidage (33) est fabriquée par galvanoplastie.
  3. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    la rondelle de guidage (33) est fabriquée en tôle.
  4. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    le siège de soupape (18) est réalisé dans un corps de siège de soupape (16) ayant une face frontale supérieure (32) contre laquelle est fixée la rondelle de guidage (33).
  5. Injecteur de carburant selon la revendication 4,
    caractérisé en ce que
    la liaison solidaire entre la rondelle de guidage (33) et le corps formant siège de soupape (16) est réalisée par soudage, brasage ou serrage.
  6. Injecteur de carburant selon l'une quelconque des revendications précédentes,
    caractérisé en ce qu'
    à la périphérie de l'orifice traversant (43), il y a au moins à chaque fois trois régions de guidage (4) alternant avec des régions de passage (45).
  7. Injecteur de carburant selon la revendication 3,
    caractérisé en ce que
    l'orifice traversant (43) est fabriqué par emboutissage.
  8. Injecteur de carburant selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    l'orifice traversant (43) est le seul orifice de toute la rondelle de guidage (33).
  9. Injecteur de carburant selon la revendication 4,
    caractérisé en ce que
    la rondelle de guidage (33) s'applique par sa face frontale supérieure à l'opposé du corps formant siège de soupape (18) contre un élément d'appui (48).
EP00940207A 1999-06-18 2000-05-18 Soupape d'admission de carburant Expired - Lifetime EP1105641B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19927899A DE19927899A1 (de) 1999-06-18 1999-06-18 Brennstoffeinspritzventil
DE19927899 1999-06-18
PCT/DE2000/001593 WO2000079123A1 (fr) 1999-06-18 2000-05-18 Soupape d'admission de carburant

Publications (2)

Publication Number Publication Date
EP1105641A1 EP1105641A1 (fr) 2001-06-13
EP1105641B1 true EP1105641B1 (fr) 2008-02-13

Family

ID=7911709

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00940207A Expired - Lifetime EP1105641B1 (fr) 1999-06-18 2000-05-18 Soupape d'admission de carburant

Country Status (5)

Country Link
US (1) US6575428B1 (fr)
EP (1) EP1105641B1 (fr)
JP (1) JP2003502576A (fr)
DE (2) DE19927899A1 (fr)
WO (1) WO2000079123A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10133166A1 (de) * 2001-07-07 2003-01-16 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen
WO2009080671A1 (fr) 2007-12-21 2009-07-02 Robert Bosch Gmbh Soupape d'injection de carburant
EP3076004B1 (fr) * 2015-04-02 2018-09-12 Continental Automotive GmbH Ensemble de soupape avec un élément de retenue de particules et soupape de fluide

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1309824A (en) 1970-08-03 1973-03-14 Barkas Werke Ifa Kom Fuer Kraf Fuel injection valves for internal combustion engines
DE3427526A1 (de) * 1984-07-26 1986-02-06 Robert Bosch Gmbh, 7000 Stuttgart Elektromagnetisch betaetigbares ventil
DE3916459A1 (de) 1989-05-20 1990-11-22 Bosch Gmbh Robert Elektromagnetisch betaetigtes ventil
DE3935148A1 (de) * 1989-10-21 1991-05-02 Bosch Gmbh Robert Elektromagnetisch betaetigbares kraftstoffeinspritzventil
US5285969A (en) * 1989-11-25 1994-02-15 Robert Bosch Gmbh Electromagnetically operated fuel injection valve
US4971254A (en) * 1989-11-28 1990-11-20 Siemens-Bendix Automotive Electronics L.P. Thin orifice swirl injector nozzle
JPH04311674A (ja) * 1991-04-08 1992-11-04 Zexel Corp 燃料噴射ノズル
EP0629266B1 (fr) 1992-03-05 1996-12-18 Siemens Automotive Corporation Injecteur de carburant comportant un filtre interne
US5642862A (en) 1995-07-28 1997-07-01 Siemens Automotive Corporation Fuel injection valve having a guide diaphragm and method for assembling
DE19631066A1 (de) * 1996-08-01 1998-02-05 Bosch Gmbh Robert Brennstoffeinspritzventil
DE19633260A1 (de) * 1996-08-17 1998-02-19 Bosch Gmbh Robert Einspritzventil, insbesondere zum direkten Einspritzen von Kraftstoff in einen Brennraum eines Verbrennungsmotors
DE19653832A1 (de) * 1996-12-21 1998-06-25 Bosch Gmbh Robert Ventil mit kombiniertem Ventilsitzkörper und Spritzlochscheibe
DE19703200A1 (de) * 1997-01-30 1998-08-06 Bosch Gmbh Robert Brennstoffeinspritzventil
US5875972A (en) * 1997-02-06 1999-03-02 Siemens Automotive Corporation Swirl generator in a fuel injector
DE19736682A1 (de) * 1997-08-22 1999-02-25 Bosch Gmbh Robert Brennstoffeinspritzventil

Also Published As

Publication number Publication date
US6575428B1 (en) 2003-06-10
EP1105641A1 (fr) 2001-06-13
WO2000079123A1 (fr) 2000-12-28
DE19927899A1 (de) 2000-12-21
DE50014959D1 (de) 2008-03-27
JP2003502576A (ja) 2003-01-21

Similar Documents

Publication Publication Date Title
EP0934459B1 (fr) Injecteur de carburant
DE19638201B4 (de) Brennstoffeinspritzventil
EP0935707B1 (fr) Injecteur de carburant
EP1003966B1 (fr) Soupape d'injection de carburant
DE4446241A1 (de) Brennstoffeinspritzventil
EP0900333A1 (fr) Soupape a commande electromagnetique
EP0937201A1 (fr) Soupape a commande electromagnetique
EP1062421B1 (fr) Soupape d'injection de carburant
EP1049871A1 (fr) Soupape d'injection de carburant
EP1309789B1 (fr) Soupape d'injection de carburant
EP1402172A1 (fr) Soupape d'injection de carburant
EP1399669B1 (fr) Soupape d'injection de carburant
EP1337752A2 (fr) Soupape d'injection de carburant et procede de production d'aiguilles de soupape ou de corps de fermeture de soupape pour soupapes d'injection de carburant
EP1322858A1 (fr) Soupape d'injection de carburant
EP1105641B1 (fr) Soupape d'admission de carburant
EP0925441B1 (fr) Soupape a commande electromagnetique
DE10063261B4 (de) Brennstoffeinspritzventil
EP1055065B1 (fr) Soupape d'injection de carburant
EP1195516B1 (fr) Soupape d'injection de combustible
DE4018317C1 (fr)
DE10142974B4 (de) Brennstoffeinspritzventil
WO2017060285A1 (fr) Dispositif d'injection de fluide pour moteurs à combustion interne
DE102020215217A1 (de) Brennstoffeinspritzventil
WO2004101986A9 (fr) Soupape d'injection de carburant
DE102008055095A1 (de) Elektromagnetisch betätigbares Ventil

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

17P Request for examination filed

Effective date: 20010628

RBV Designated contracting states (corrected)

Designated state(s): DE FR GB IT

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 50014959

Country of ref document: DE

Date of ref document: 20080327

Kind code of ref document: P

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20081114

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20090519

Year of fee payment: 10

Ref country code: IT

Payment date: 20090527

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20090528

Year of fee payment: 10

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20100518

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20110131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100518

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100518

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20110726

Year of fee payment: 12

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50014959

Country of ref document: DE

Effective date: 20121201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20121201