EP1423604B1 - Soupape d'injection de carburant - Google Patents

Soupape d'injection de carburant Download PDF

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Publication number
EP1423604B1
EP1423604B1 EP02754212A EP02754212A EP1423604B1 EP 1423604 B1 EP1423604 B1 EP 1423604B1 EP 02754212 A EP02754212 A EP 02754212A EP 02754212 A EP02754212 A EP 02754212A EP 1423604 B1 EP1423604 B1 EP 1423604B1
Authority
EP
European Patent Office
Prior art keywords
fuel injection
injection valve
cone
region
diameter
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
EP02754212A
Other languages
German (de)
English (en)
Other versions
EP1423604A1 (fr
Inventor
Jürgen RAIMANN
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 EP1423604A1 publication Critical patent/EP1423604A1/fr
Application granted granted Critical
Publication of EP1423604B1 publication Critical patent/EP1423604B1/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
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • 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
    • F02M57/00—Fuel-injectors combined or associated with other devices
    • 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
    • F02M2200/50—Arrangements of springs for valves used in fuel injectors or fuel injection pumps
    • F02M2200/505—Adjusting spring tension by sliding spring seats
    • 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
    • F02M61/165—Filtering elements specially adapted in fuel inlets to injector

Definitions

  • the invention is based on a fuel injection valve according to the preamble of the main claim, as from the document DE 34 24 891 A known.
  • a Fuel injector includes the fuel in one combustion chamber formed by a piston / cylinder construction injected, and with a protruding into the combustion chamber Spark plug is provided.
  • the fuel injection valve is with at least one row over the circumference of the Fuel injector arranged distributed Provided injection holes. Through a targeted injection of fuel through the injection holes becomes one beam-guided combustion process by forming a Mixture cloud realized with at least one jet.
  • a disadvantage of the above-mentioned document known fuel injection valve is in particular the Coking of the ejection openings, which thereby clog and the flow through the fuel injector diminish impermissibly. This leads to malfunctions the internal combustion engine.
  • the fuel injection valve according to the invention with the characterizing features of the main claim has In contrast, the advantage that a downstream of the Spray openings of the fuel injection valve arranged flameproof cone the temperature of the flame front the blowing mixture cloud in the Spray openings so much reduced that no Combustion residues in the area of the injection orifices which can cause the growth of the Spray holes is avoided by coking residues.
  • the flame arrester is on discharge-side end of the fuel injection valve, on the valve seat body, formed.
  • the flameproof cone as Cone or truncated cone, as a multi-part cone with different inclination angles or as a truncated cone with an attached ball is formed, whereby on the one hand a simple and inexpensive production is possible and on the other hand arbitrary injection situations with any Number and arrangement of injection ports accounted for can be.
  • Fig. 1 shows in an excerpted sectional view Embodiment of an inventive Fuel Injector 1.
  • the fuel injector 1 is in the form of a fuel injection valve 1 for Fuel injection systems of mixture compression, spark-ignited internal combustion engines running.
  • the Fuel injector 1 is suitable for direct Injecting fuel into a not shown 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 for example via a weld 41 in operative connection with a valve closing body 4, the arranged with a valve seat body 5 on a Valve seat surface 6 cooperates to a sealing seat.
  • Fuel injection valve 1 is in Embodiment to an inwardly opening Fuel injection valve 1, which over several Abspritzö Anlagenen 7 has, at least one for Axis of the valve seat body 5 concentric circle are arranged.
  • the nozzle body 2 is by a seal 8 against a Outer pole 9 acting as an actuator for the valve needle 3 Magnetic coil 10 sealed.
  • the magnetic coil 10 is in one Coil housing 11 encapsulated and on a bobbin 12th wound, which at an inner pole 13 of the magnetic coil 10th is applied.
  • the inner pole 13 and the outer pole 9 are connected by a Split 26 separated from each other and rely on a Connecting component 29 from.
  • the magnetic coil 10 is connected via a Line 19 of a via an electrical plug contact 17th energized electric current.
  • the plug contact 17 is surrounded by a plastic sheath 18, the Inner pole 13 may be molded.
  • 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.
  • a second flange 31st Downstream of the armature 20 is a second flange 31st arranged, which serves as a lower anchor stop. He is over a weld 33 frictionally with the valve needle. 3 connected. Between the armature 20 and the second flange 31 is an elastic intermediate ring 32 for damping Anchor bouncers when closing the fuel injector 1 arranged.
  • the armature 20 and the Valve seat body 5 extend fuel channels 30a to 30c.
  • the fuel is via a central fuel supply 16 supplied and filtered by a filter element 25.
  • the Fuel injection valve 1 is opposed by a seal 28 sealed a distribution line not shown.
  • the fuel injection valve 1 at the Valve seat body 5 a flameproof cone 34, which within the at least one circle of ejection openings 7 is attached.
  • the flameproof cone 34 reduced by its arrangement downstream of the spray openings 7 the Coking tendency and thus prevents malfunction of the Fuel injection valve 1 by clogging the Spray openings 7 and an impermissible reduction in the Fuel flow before.
  • a spray-side end 35 of the Fuel injection valve 1 with the inventive Measures is shown in more detail in FIGS. 2 and 3A.
  • the armature 20 drops sufficient reduction of the magnetic field by the pressure of the Return spring 23 on the first flange 21 from the inner pole thirteenth from, causing the valve needle 3 against the stroke direction emotional. As a result, the valve closing body 4 is placed on the Valve seat surface 6 and the fuel injection valve. 1 will be closed. The armature 20 sits on the through the second flange 31 formed anchor stop.
  • Fig. 2 shows an enlarged schematic view of the Spray-side end 35 of the illustrated in Fig. 1 Inventively designed fuel injection valve. 1 in region II in FIG. 1.
  • the fuel injection valve 1 has a Flame protection cone 34, which for lowering the Flame temperature in the region of the ejection openings 7, for example, on the valve seat body 5, is arranged.
  • the Flame protection cone 34 is designed pointed cone and can with the valve seat body 5 either in one piece trained or in a suitable manner, for example by means of Soldering, welding or gluing to be fixed to this.
  • the axial length L and the diameter D of Flame protection cone 34 depends on the opening angle ⁇ in from the combustion chamber injected mixture cloud and should each be sized so that the flameproof cone 34 is not is wetted by the mixture cloud.
  • the coking of Spray openings 7 can be reduced. Because the diameter of the Spray openings 7 is typically about 100 microns, is the risk that the ejection openings 7 by coking with clog the time and thus the flow rate inadmissible is severely restricted, relatively large. This is in particular by the high temperatures during ignition the injected into the combustion chamber mixture cloud, since thereby components of the fuel at the top of the Deposit fuel injector 1.
  • the flameproof cone 34 prevents in particular the propagation of the flame front in Area of the spray openings 7.
  • FIG. 3A to 3C show that shown in FIG. 2 and with III designated section of the invention designed fuel injection valve 1 with different embodiments of the invention Flameproof cone 34.
  • Fig. 3A shows the simple conical shape, which has already been addressed with reference to FIG. 2.
  • the length L of the flameproof cone 34 and its diameter D at the base depend on the shape and the opening angle ⁇ of the injected mixture cloud.
  • the axial length L is typically up to three times the diameter D B of the discharge-side end 35 of the fuel injection valve 1, while the diameter D is at most half the diameter D B of the discharge-side end 35 of the fuel injection valve 1.
  • FIG. 3B shows another possible form of the flameproof cone 34.
  • a valve seat body 5 facing first portion 36 is frusto-conical, the diameter D increases from the base in Abspritzraum.
  • This is followed by a second region 37, which is frusto-conical.
  • the diameter D of the first region 36 is at the base to half the diameter D B of the downstream end 35 of the fuel injection valve 1 and can increase up to one and a half times the diameter D B of the downstream end 35 of the fuel injection valve 1 at the base of the second region 37.
  • the axial length L of the flameproof cone 34 can be up to four times the diameter D B of the fuel injection valve 1 in the region of the valve seat body 5, of which up to a quarter is attributable to the second region 37.
  • 3C shows a third embodiment of the flameproof cone 34 according to the invention, the shape of a truncated cone 38 having an attached ball 39 being selected here.
  • the axial length L of the truncated cone 38 can be as in the first embodiment, up to three times the diameter D B of the fuel injector 1 in the region of the valve seat body 5, while the ball 39 can reach a diameter d which corresponds to the diameter D B of the fuel injection valve 1 in Area of the valve closing body 5 corresponds.
  • the invention is not limited to those shown Embodiments limited and for any forms of Flame protection cones 34, which in any way on discharge-side end of the fuel injection valve. 1 can be fixed, and for any construction of Fuel injectors 1 applicable.

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 (15)

  1. Injecteur de carburant (1) pour l'injection directe de carburant dans la chambre de combustion de moteurs à combustion interne, comprenant un actionneur (10), une aiguille de soupape (3) actionnable par l'actionneur (10) pour actionner un corps de fermeture de soupape (4) qui conjointement avec une surface de siège de soupape (6) prévue sur un corps de siège de soupape (5) forme un siège d'étanchéité, avec au moins un orifice d'éjection (7) prévu en aval du siège de soupape (6) et un cône pare-flammes (34) disposé à une extrémité aval (42) de l'injecteur de carburant (1),
    caractérisé en ce que
    le cône pare-flammes (34) est formé sur le corps de siège de soupape (5).
  2. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    le cône pare-flammes (34) présente la forme d'un cône pointu.
  3. Injecteur de carburant selon la revendication 2,
    caractérisé en ce qu'
    une longueur axiale L du cône pare-flammes (34) est jusqu'à trois fois supérieure au diamètre (DB) de l'injecteur (1) dans la zone du corps de siège de soupape (5).
  4. Injecteur de carburant selon la revendication 2 ou 3,
    caractérisé en ce qu'
    un diamètre radial (D) du cône pare-flammes (34) présente jusqu'à une moitié du diamètre (DB) de l'injecteur (1) dans la zone du corps de siège de soupape (5).
  5. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    le cône pare-flammes (34) présente la forme d'un cône à plusieurs étages ou d'un cône tronqué.
  6. Injecteur de carburant selon la revendication 5,
    caractérisé en ce que
    le nombre d'étages du cône pare-flammes (34) conique ou tronconique est de deux.
  7. Injecteur de carburant selon la revendication 5 ou 6,
    caractérisé en ce qu'
    une première zone (36), s'étendant en aval du corps de siège de soupape (5), s'évase radialement vers l'aval.
  8. Injecteur de carburant selon la revendication 7,
    caractérisé en ce que
    la première zone (36) est suivie d'une deuxième zone (37) présentant une forme tronconique.
  9. Injecteur de carburant selon l'une quelconque des revendications 5 à 8,
    caractérisé en ce qu'
    une longueur axiale (L) du cône pare-flammes (34) est jusqu'à quatre fois supérieure au diamètre (DB) de l'injecteur de carburant (1) dans la zone du corps de siège de soupape (5).
  10. Injecteur de carburant selon l'une quelconque des revendications 5 à 9,
    caractérisé en ce qu'
    un diamètre radial (D) du cône pare-flammes (34) est jusqu'à une fois et demie supérieur au diamètre (DB) de l'injecteur de carburant (1) dans la zone du corps de siège de soupape (5).
  11. Injecteur de carburant selon la revendication 7 ou 8,
    caractérisé en ce que
    la longueur axiale (1) de la première zone (36) présente jusqu'à trois fois le diamètre (DB) de l'injecteur de carburant (1) dans la zone du corps de siège de soupape (5).
  12. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    le cône pare-flammes (34) présente la forme d'un tronc de cône (38) avec une bille (39) placée dessus.
  13. Injecteur de carburant selon la revendication 12,
    caractérisé en ce qu'
    une longueur axiale (L) du cône pare-flammes (34) présente jusqu'à trois fois le diamètre (DB) de l'injecteur de carburant (1) dans la zone du corps de siège de soupape (5).
  14. Injecteur de carburant selon la revendication 12 ou 13,
    caractérisé en ce que
    le diamètre (d) de la bille (39) correspond jusqu'à un diamètre (DB) de l'injecteur de carburant (1) dans la zone du corps de siège de soupape (5).
  15. Injecteur de carburant selon l'une quelconque des revendications 1 à 14,
    caractérisé en ce que
    le cône pare-flammes (34) est incliné d'un angle (γ) par rapport à un axe longitudinal de l'injecteur de carburant (1).
EP02754212A 2001-08-29 2002-06-14 Soupape d'injection de carburant Expired - Lifetime EP1423604B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10142301A DE10142301A1 (de) 2001-08-29 2001-08-29 Brennstoffeinspritzventil
DE10142301 2001-08-29
PCT/DE2002/002174 WO2003027488A1 (fr) 2001-08-29 2002-06-14 Soupape d'injection de carburant

Publications (2)

Publication Number Publication Date
EP1423604A1 EP1423604A1 (fr) 2004-06-02
EP1423604B1 true EP1423604B1 (fr) 2005-05-04

Family

ID=7696980

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02754212A Expired - Lifetime EP1423604B1 (fr) 2001-08-29 2002-06-14 Soupape d'injection de carburant

Country Status (6)

Country Link
US (1) US7021564B2 (fr)
EP (1) EP1423604B1 (fr)
JP (1) JP2005504219A (fr)
KR (1) KR20040029017A (fr)
DE (2) DE10142301A1 (fr)
WO (1) WO2003027488A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112746923B (zh) * 2020-07-29 2022-10-04 天津职业技术师范大学(中国职业培训指导教师进修中心) 一种分体式侧进油喷油器进油装置、侧进油喷油器进油系统

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1425329A (en) * 1918-08-26 1922-08-08 Adolph A Mellblom Spark plug
DE2905396A1 (de) 1979-02-13 1980-08-14 Bosch Gmbh Robert Zapfenduese, insbesondere fuer mehrkammer-dieselmotoren
DE2939280A1 (de) 1979-09-28 1981-04-16 Robert Bosch Gmbh, 7000 Stuttgart Zapfenduese fuer dieselmotore
JPS57152458U (fr) * 1981-03-23 1982-09-24
JPS5890365U (ja) * 1981-12-15 1983-06-18 愛三工業株式会社 電磁燃料噴射器
DE3225180A1 (de) * 1982-07-06 1984-01-12 Robert Bosch Gmbh, 7000 Stuttgart Einspritzventil
GB8318802D0 (en) 1983-07-12 1983-08-10 Lucas Ind Plc Fuel injection nozzles
DE3623223A1 (de) * 1986-07-10 1988-02-04 Daimler Benz Ag Luftverdichtende einspritzbrennkraftmaschine
US5161743A (en) * 1986-10-24 1992-11-10 Nippondenso Co., Ltd. Electromagnetic fuel injection valve for internal combustion engine
DE3928912A1 (de) * 1988-09-29 1990-04-05 Avl Verbrennungskraft Messtech Kraftstoffeinspritzduese fuer brennkraftmaschinen
DE3841324A1 (de) 1988-12-08 1990-06-13 Bosch Gmbh Robert Kraftstoff-einspritzduese fuer brennkraftmaschinen
JP3136829B2 (ja) * 1993-05-06 2001-02-19 株式会社デンソー 燃料噴射弁
DE4442350A1 (de) * 1993-12-21 1995-06-22 Bosch Gmbh Robert Zerstäubungssieb und Brennstoffeinspritzventil mit einem Zerstäubungssieb
DE4442355B4 (de) 1994-11-29 2004-02-12 Continental Teves Ag & Co. Ohg Verfahren zur Erfassung und Auswertung von fahrdynamischen Zuständen
DE19804463B4 (de) 1998-02-05 2006-06-14 Daimlerchrysler Ag Kraftstoffeinspritzsystem für Ottomotoren

Also Published As

Publication number Publication date
DE10142301A1 (de) 2003-03-20
DE50203025D1 (de) 2005-06-09
KR20040029017A (ko) 2004-04-03
WO2003027488A1 (fr) 2003-04-03
JP2005504219A (ja) 2005-02-10
US7021564B2 (en) 2006-04-04
US20040026536A1 (en) 2004-02-12
EP1423604A1 (fr) 2004-06-02

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