EP1481157B1 - Soupape d'injection de carburant - Google Patents

Soupape d'injection de carburant Download PDF

Info

Publication number
EP1481157B1
EP1481157B1 EP02795039A EP02795039A EP1481157B1 EP 1481157 B1 EP1481157 B1 EP 1481157B1 EP 02795039 A EP02795039 A EP 02795039A EP 02795039 A EP02795039 A EP 02795039A EP 1481157 B1 EP1481157 B1 EP 1481157B1
Authority
EP
European Patent Office
Prior art keywords
intermediate ring
fuel injection
armature
injection valve
fuel
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
EP02795039A
Other languages
German (de)
English (en)
Other versions
EP1481157A1 (fr
Inventor
Klaus Noller
Martin Buehner
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 EP1481157A1 publication Critical patent/EP1481157A1/fr
Application granted granted Critical
Publication of EP1481157B1 publication Critical patent/EP1481157B1/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
    • F02M51/0685—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 and the valve being allowed to move relatively to each other or not being attached to each other
    • 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
    • F02M61/20—Closing valves mechanically, e.g. arrangements of springs or weights or permanent magnets; Damping of valve lift
    • F02M61/205—Means specially adapted for varying the spring tension or assisting the spring force to close the injection-valve, e.g. with damping of valve lift
    • 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
    • F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
    • F02M2200/306—Fuel-injection apparatus having mechanical parts, the movement of which is damped using mechanical means
    • 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
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8084—Fuel injection apparatus manufacture, repair or assembly involving welding or soldering

Definitions

  • the invention is based on a fuel injection valve according to the preamble of the main claim.
  • a disadvantage is in particular the complex design with an additional component. Also, the large area Elastomer ring unfavorable for the course of the magnetic field and complicates the closing of the field lines and thus the Achieving high tightening forces during the opening movement of the Fuel injector.
  • a fuel injection valve according to the preamble of claim 1 is described in document DE 199 50761 A.
  • the fuel injection valve according to the invention with the characterizing features of the main claim has In contrast, the advantage that the armature against the Intermediate ring and the damping element against rotation is arranged without further components are needed. The other functions such as debouncing the anchor and the valve needle and the discharge of fuel from the Sealing element remain unaffected.
  • the intermediate ring is advantageously in one Recess, which in a drain-side end of the Anchor is formed.
  • a variant provides, the anchor and the Intermediate ring in a simple and cost-effective manner Weld directly to each other.
  • Another advantage is that the interlocking or interconnected components anchor and intermediate ring by the static friction which exists between the damping element and the intermediate ring prevails, against rotation on the Valve needle are arranged.
  • the fuel injection valve 1 is in the form of a Fuel injection valve for fuel injection systems of mixture-compacting, externally ignited Internal combustion engine running.
  • the Fuel injector 1 is particularly suitable for direct injection of fuel into one illustrated combustion chamber of an internal combustion engine.
  • the fuel injection valve 1 consists of a Nozzle body 2, in which a valve needle 3 is arranged.
  • the valve needle 3 is connected to the valve closing body 4 in Operative connection, with a on a valve seat body. 5 arranged valve seat surface 6 to a sealing seat interacts.
  • the fuel injection valve 1 acts it is in the exemplary embodiment to an inwardly opening Fuel injection valve 1, which via a Spray opening 7 has.
  • the nozzle body 2 is through a Seal 8 against the outer pole 9 of a magnetic coil 10th sealed.
  • the magnetic coil 10 is in a coil housing 11 encapsulated and wound on a bobbin 12, which rests against an inner pole 13 of the magnetic coil 10.
  • the Solenoid 10 is connected via a line 19 from a via an electrical plug-in contact 17 can be supplied electrical Electricity excited.
  • the plug contact 17 is of a Plastic casing 18 surrounded, the inner pole 13th can be injected.
  • the valve needle 3 is in a valve needle guide fourteenth guided, which is designed disk-shaped. to Stroke adjustment is a paired shim 15.
  • An the other side of the dial 15 is a Anchor 20. This is about a first flange 21st non-positively connected to the valve needle 3 in conjunction, which by a weld 22 with the first flange 21 connected is.
  • On the first flange 21 is supported Return spring 23 from which in the present design of Fuel injection valve 1 by a sleeve 24 Bias is brought.
  • Fuel channels 30a to 30c In the valve needle guide 14, in Anchor 20 and the valve seat body 5 extend Fuel channels 30a to 30c. The fuel gets over one supplied central fuel supply 16 and by a Filter element 25 filtered.
  • the fuel injection valve 1 is by a seal 28 against a not further sealed illustrated fuel line.
  • a annular damping element 32 On the discharge side of the armature 20 is a annular damping element 32, which consists of a Elastomer material consists, arranged. It lies on one second flange 31, which frictionally with the Valve needle 3 is connected.
  • the armature 20 drops sufficient reduction of the magnetic field by the pressure of the Return spring 23 from the inner pole 13, causing the with the valve needle 3 in communication first flange 21st moved against the stroke direction.
  • the valve needle 3 is thereby moved in the same direction, causing the Valve closing body 4 touches on the valve seat surface 6 and the fuel injection valve 1 is closed.
  • Fig. 2A shows in an excerpted sectional view of a enlarged view of the area IIA in Fig. 1.
  • the intermediate ring 33 is shaped or arranged that the armature 20 against rotation on the Valve needle 3 is mounted and only more axially in the frame the anchor stops, which by the first flange 21 and can be formed, the second flange 31 can move.
  • the number of edges 34 six, as shown in Fig. 2B, which is a sectional view along that in Fig. 2A with IIB-IIB indicated line shows, can be seen.
  • the intermediate ring 33 on the damping element 32 which consists of an elastomeric material, is the static friction between the intermediate ring 33 and the Damping element 32 so large that they are not can twist against each other.
  • Fig. 3 shows a second embodiment of a inventive design of the Fuel injection valve 1 in the same view as FIG. 2A. Same components are with matching Provided with reference numerals.
  • the weld 39 can extend over the entire circumference of the intermediate ring 33. It You can also apply multiple welds to individual points for example, between the fuel channels 30a, be limited.
  • the invention is not limited to those shown Embodiments limited and z. B. also for outward opening fuel injectors 1 or others Anchor shapes, such as flat anchors suitable.

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 (1), en particulier pour l'injection directe de carburant dans la chambre de combustion d'un moteur à combustion interne, comprenant une aiguille de soupape (3) qui coopère avec une surface de siège de soupape (6) pour former une portée étanche et un induit (20) qui attaque l'aiguille de soupape (3), l'armature (20) se déplaçant axialement le long de l'aiguille de soupape (3) et étant amorti par un élément amortisseur en élastomère (32), l'élément amortisseur (32) s'appuyant sur une bride (31) reliée à l'aiguille de soupape (3) pour la transmission de la force, avec une bague intermédiaire (33) disposée entre l'induit (20) et l'élément amortisseur (32),
    caractérisé en ce que
    l'induit (20) est fixé solidairement en rotation sur l'aiguille de soupape (3) par la bague intermédiaire (33).
  2. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    la bague intermédiaire (33) est polygonale.
  3. Injecteur de carburant selon la revendication 2,
    caractérisé en ce que
    le nombre des côtés (34) de la bague intermédiaire (33) est égal au nombre de canaux de carburant (30a) prévus dans l'induit (20).
  4. Injecteur de carburant selon la revendication 3,
    caractérisé en ce que
    le nombre des côtés (34) est de six.
  5. Injecteur de carburant selon la revendication 2,
    caractérisé en ce que
    la bague intermédiaire polygonale (33) est disposée au moins partiellement dans un évidement (35) formé dans une surface frontale côté aval (36) de l'induit (20).
  6. Injecteur de carburant selon la revendication 5,
    caractérisé en ce que
    la bague intermédiaire polygonale (33) est engagée par ses angles (38) formés par les côtés (34) dans les canaux de carburant (30a) entamés par l'évidement (35).
  7. Injecteur de carburant selon la revendication 6,
    caractérisé en ce que
    les canaux de carburant entamés (30a) sont en appui par des points d'angles (37) contre les côtés (34) de la bague intermédiaire (33).
  8. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    la bague intermédiaire (33) est reliée à l'induit (20) par au moins une soudure (39).
  9. Injecteur de carburant selon une des revendications 1 à 8,
    caractérisé en ce que
    la bague intermédiaire (33) est tenue solidairement en rotation sur l'élément amortisseur (32) par adhérence.
EP02795039A 2002-02-26 2002-12-23 Soupape d'injection de carburant Expired - Lifetime EP1481157B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10208224 2002-02-26
DE10208224A DE10208224A1 (de) 2002-02-26 2002-02-26 Brennstoffeinspritzventil
PCT/DE2002/004732 WO2003072928A1 (fr) 2002-02-26 2002-12-23 Soupape d'injection de carburant

Publications (2)

Publication Number Publication Date
EP1481157A1 EP1481157A1 (fr) 2004-12-01
EP1481157B1 true EP1481157B1 (fr) 2005-08-24

Family

ID=27740426

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02795039A Expired - Lifetime EP1481157B1 (fr) 2002-02-26 2002-12-23 Soupape d'injection de carburant

Country Status (7)

Country Link
US (1) US7007870B2 (fr)
EP (1) EP1481157B1 (fr)
JP (1) JP4276954B2 (fr)
KR (1) KR20040086443A (fr)
AT (1) ATE302902T1 (fr)
DE (2) DE10208224A1 (fr)
WO (1) WO2003072928A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBO20030090A1 (it) * 2003-02-21 2004-08-22 Magneti Marelli Powertrain Spa Iniettore di carburante per un motore a combustione interna.
DE102010021118A1 (de) * 2010-04-15 2011-10-20 Micro-Epsilon Messtechnik Gmbh & Co. Kg Sensor
EP2851551B1 (fr) 2013-09-20 2016-05-25 Continental Automotive GmbH Soupape d'injection de fluide
CN109154261B (zh) * 2016-06-02 2021-06-08 大陆汽车有限公司 用于喷射阀的阀组件以及喷射阀
DE102017207270A1 (de) * 2016-06-30 2018-01-04 Robert Bosch Gmbh Ventil zum Zumessen eines Fluids
US10119507B1 (en) * 2017-07-17 2018-11-06 GM Global Technology Operations LLC Rotating fuel injector assembly
DE102017222501A1 (de) * 2017-12-12 2019-06-13 Robert Bosch Gmbh Ventil zum Zumessen eines Fluids
EP4348031A1 (fr) 2021-05-28 2024-04-10 Stanadyne LLC Injecteur de carburant

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4766405A (en) 1987-04-14 1988-08-23 Allied Corporation Dynamic energy absorber
DE19950761A1 (de) 1999-10-21 2001-04-26 Bosch Gmbh Robert Brennstoffeinspritzventil
DE10039078A1 (de) 2000-08-10 2002-02-21 Bosch Gmbh Robert Brennstoffeinspritzventil
DE10118162B9 (de) 2001-04-11 2004-09-09 Robert Bosch Gmbh Brennstoffeinspritzventil
DE10124743A1 (de) * 2001-05-21 2002-11-28 Bosch Gmbh Robert Brennstoffeinspritzventil

Also Published As

Publication number Publication date
DE50204045D1 (de) 2005-09-29
JP2005518497A (ja) 2005-06-23
JP4276954B2 (ja) 2009-06-10
EP1481157A1 (fr) 2004-12-01
KR20040086443A (ko) 2004-10-08
DE10208224A1 (de) 2003-09-11
US7007870B2 (en) 2006-03-07
US20040155124A1 (en) 2004-08-12
WO2003072928A1 (fr) 2003-09-04
ATE302902T1 (de) 2005-09-15

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