EP1114250B1 - Soupape d'injection de carburant - Google Patents

Soupape d'injection de carburant Download PDF

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Publication number
EP1114250B1
EP1114250B1 EP00951263A EP00951263A EP1114250B1 EP 1114250 B1 EP1114250 B1 EP 1114250B1 EP 00951263 A EP00951263 A EP 00951263A EP 00951263 A EP00951263 A EP 00951263A EP 1114250 B1 EP1114250 B1 EP 1114250B1
Authority
EP
European Patent Office
Prior art keywords
fuel injection
injection valve
valve
depression
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
EP00951263A
Other languages
German (de)
English (en)
Other versions
EP1114250A1 (fr
Inventor
Ferdinand Reiter
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 EP1114250A1 publication Critical patent/EP1114250A1/fr
Application granted granted Critical
Publication of EP1114250B1 publication Critical patent/EP1114250B1/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
    • 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
    • F02M51/0614—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of electromagnets or fixed armature
    • 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
    • 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
    • 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
    • F02M61/162—Means to impart a whirling motion to fuel upstream or near discharging orifices
    • 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
    • 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
    • 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

Definitions

  • the invention is based on a fuel injection valve according to the preamble of claim 1.
  • the fuel injection valve has one with a Valve needle connected valve closing body, with a valve seat surface formed on a valve seat body cooperates a sealing seat.
  • To the electromagnetic Actuation of the fuel injection valve is one Magnetic coil provided with a magnet armature cooperates, which together with the valve closing body the Valve needle forms.
  • To reduce the rebound of the Valve closing body from the valve seat surface when closing of the fuel injection valve is at the outer periphery of Magnetic anchor arranged a damping element. Preller the Valve needle or the valve closing body otherwise lead to an uncontrolled, momentary opening of the Fuel injection valve and thus not one reproducible metering of fuel and to a uncontrolled injection behavior.
  • the fuel injection valve according to the invention with the characterizing features of claim 1 has the advantage that any bumpers of the valve needle even more effective can be avoided.
  • the inventive Fuel injection valve advantageously simple and inexpensive to produce.
  • the at least one recess at the connection part / valve seat carrier in such a way that they um 360 ° revolves.
  • the recess can be particularly by Rolling be introduced.
  • the damping element can Be elastomeric material as a damping material that the Deepening largely completes. That's it Damping material particularly simple and inexpensive through Pouring or encapsulation can be introduced. Alternatively you can instead of an injected elastomeric material as well Damping elements in the form of damping rings or Hose elements are used. Also for this Damping elements can be used elastomers.
  • the partially shown in the figure 1 electromagnetically actuatable valve in the form of a Fuel injection valve for fuel injection systems of mixture-compacting, externally ignited Internal combustion engine is particularly suitable for direct Injecting fuel into a not shown Combustion chamber.
  • the fuel injection valve has one of a Magnetic coil 1 surrounded, tubular core 2 as so-called Pole.
  • a bobbin 3 takes a winding of Solenoid 1 on and allows in conjunction with the core 2 a particularly compact design of the injection valve in Range of solenoid 1.
  • excitable actuators are also suitable instead of an electromagnetic circuit Piezoactuators or magnetostrictive actuators.
  • a lower core end 9 of the core 2 is concentric with a valve longitudinal axis 10 dense a tubular metal Intermediate part 12, for example, connected by welding and surrounds the core end 9 partially axially.
  • Downstream of the Bobbin 3 and the intermediate part 12 extends largely tubular, preformed valve seat carrier 16, for example, firmly connected to the intermediate part 12 is.
  • a thin-walled Sleeve performing valve seat support 16 extends a Longitudinal opening 18.
  • a e.g. rod-shaped valve needle 19 which at its downstream End having a valve closing portion 21, arranged.
  • the actuation of the injection valve takes place in known Way e.g. electromagnetically.
  • a return spring 25 and closing of the injection valve serves the electromagnetic circuit with the magnetic coil 1, the core 2 and an armature 26.
  • the armature 26 is connected to the Valve closing portion 21 opposite end of the valve needle 19 connected by a weld and the core 2 aligned.
  • the core 2 opposite end of the valve seat carrier 16 is in the Longitudinal opening 18 through a guide and seat unit Welding tightly assembled.
  • This guide and seat unit comprises three disk-shaped Elements with their faces directly adjacent to each other lie.
  • a guide element 27 In the downstream direction follow each other a guide element 27, a swirl element 28 and a Valve seat member 29. While the guide member 27 and the Dralleiement 28 completely within the longitudinal opening 18th are arranged, the valve seat member 29 protrudes with a stepped outer contour only partially in the longitudinal opening 18th into it.
  • an outwardly projecting shoulder 30 is the valve seat member 29 firmly and tightly with the Valve seat support 16 at the downstream end side connected.
  • the guide element 27, the swirl element 28 and the valve seat member 29 are also fixed to each other connected, with a weld on the outer circumference of the offers three elements 27, 28 and 29.
  • valve closing portion 21 acts with a tapered in the direction of flow frustoconically Valve seat surface 32 of the valve seat member 29 together.
  • outlet opening 33 obliquely inclined to the valve longitudinal axis 10 executed in a convexly curved spray area of the Valve seat member 29 ends.
  • the outlet opening 33rd flowing fuel is swirling, as him before the Valve seat surface 32 in the swirl element 28, in the For example, several tangentially extending swirl channels are provided, a Zerstäubungsverêtnde Spin component is impressed.
  • valve needle 19 An end position of the valve needle 19 is not energized Solenoid coil 1 through the system of the valve closing section 21 fixed to the valve seat 32, while the other end position of the valve needle 19 when energized Solenoid 1 through the system of the armature 26 at the core end. 9 of the core 2.
  • the distance between the two End positions represents the valve lift.
  • the solenoid 1 is surrounded by a cup-shaped valve housing 35, which as so-called outer pole is used. With his the valve seat element 29 facing the lower end, the valve housing 35 is fixed on the valve seat carrier 16 e.g. by means of a weld applied.
  • a ferritic Material for the valve seat carrier 16 could also be austenitic material may be used, e.g. a has very good formability.
  • the valve seat carrier 16 is designed elongated, wherein the valve seat carrier 16th even half or more of the total axial Extend length of the injector can make. With this design of the valve seat carrier 16 can the Abspritzddling the injector are far advanced; which is due to certain internal combustion engines unconventional design and limited installation space may be desirable.
  • the Fuel injection valve When using the Fuel injection valve as a direct injection valve can the Abspritzddling so optimally to a desired location of the Combustion chamber are set.
  • Injectors for port injection means a such design that the fuel injection valve with its downstream end and thus with his Zumess- and Abspritz Scheme extends well into the intake manifold. This can be achieved by the targeted cumshot on or several inlet valves a wall wetting of the intake pipe largely avoided and as a result, the exhaust emission the internal combustion engine can be reduced.
  • Valve seat support 16 By using the relatively cheap sleeve for the Valve seat support 16 makes it possible to move in Injectors usual rotary parts, due to their larger outside diameter voluminous and at the Manufacture more expensive than the valve seat carrier 16, too without.
  • sealing element 41 is used for Seal between the circumference of the injector and a valve receptacle, not shown, in the cylinder head or on an intake pipe of the internal combustion engine.
  • the Sealing element 41 is e.g. made of a plastic, such as PTFE produced.
  • the valve seat carrier 16 is characterized in that in addition to the sealing element 41 receiving groove 40th at least one radially inwardly directed recess 43 e.g. is provided in the form of a groove, for example, in Circumference completely rotates. About the axial length the valve seat support 16- can also be more radial Recesses 43 may be formed, as shown in the drawing two recesses 43 can be removed. In another Extension of the valve seat support 16 can also several distributed over the circumference, the rigidity increasing, recessed formations in the form of beads 44 be provided. These beads 44 have in contrast to the recesses 43 a greater longitudinal extent. In for example, by deep drawing or from a tube formed by forming valve seat carrier 16 is the at least one recess 43, e.g.
  • a fuel injection valve with a valve seat carrier 16 in which in the downstream direction only around the circumference distributed beads 44, then two axially successive and radial recesses 43, then in turn distributed over the circumference elongated beads 44th and then the one circumferential annular groove 40 for the Follow sealing element 41.
  • At least one radially inward projecting recess 43 of the valve seat support 16 a Damping element 45, which from the outer circumference of the Valve seat carrier 16 is introduced from.
  • the Damping element 45 has the task of axial vibrations in Valve seat support 16, by the valve seat on the 32nd braked valve needle 19 when closing the valve caused to diminish. This way you can effectively the bouncing of the valve needle 19 with the Valve closing portion 21 prevents the valve seat 32 become.
  • the damping element 45 can in different variants in the at least one recess 43 are introduced.
  • a Possibility is, as shown in the drawing, fill the recess 43 with a damping material.
  • damping material is an elastomeric material, by pouring or overmolding, e.g. similarly known Plastic injection molding processes for producing a Plastic injection, is filled in the recess 43.
  • the depressions 43 can, for example, up to their be completely filled radially outer edge regions.
  • damping elements 45 in the form of Damping rings e.g. in the form of O-rings, or Hose elements with e.g. Cavities are used.
  • damping elements 45 elastomers can be used become.
  • other damping materials are also for an insert in a recess 43 of the valve seat carrier 16 conceivable.
  • the recesses 43 which radially to protrude inside and filled with a damping element 45.
  • a damping element 45 For example, that could be between the two wells 43 formed pointing in the reverse direction, radially to outwardly projecting recess 43 'with a damping element 45th be filled up as well. It can be both inside only projecting recesses 43 or only outwardly projecting Recesses 43 'and both types of recesses 43, 43 'be provided with damping elements 45.

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)
  • Manufacturing & Machinery (AREA)
  • Fuel-Injection Apparatus (AREA)

Claims (10)

  1. Injecteur de carburant comportant une admission de carburant, comportant un dispositif d'actionnement (1, 2, 26, 35) pouvant être activé, et par lequel peut être déplacé un organe de fermeture de soupape (21), comportant un siège de soupape fixe (32) configuré sur un élément de siège de soupape (29), avec lequel coopère l'organe de fermeture de soupape (21) pour l'ouverture et la fermeture de la soupape, comportant une évacuation de carburant (33) prévue en aval du siège de soupape (32), et comportant une partie de raccordement (16) présentant une ouverture longitudinale intérieure (18) et accueillant l'élément de siège de soupape (29),
    caractérisé en ce que
    la partie de raccordement (16) est configurée en forme de douille à parois minces et présente au moins un renfoncement (43, 43') s'étendant radialement, dans lequel est disposé un élément d'amortissement (45), et on utilise en tant que matériau d'amortissement pour l'élément d'amortissement (45) un matériau élastomère.
  2. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    le renfoncement (43) est dirigé radialement vers l'intérieur à partir de la périphérie extérieure.
  3. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    le renfoncement (43') est dirigé radialement vers l'extérieur à partir de l'ouverture longitudinale (18).
  4. Injecteur de carburant selon l'une des revendications précédentes,
    caractérisé en ce que
    le renfoncement (43, 43') est configuré à 360°.
  5. Injecteur de carburant selon l'une des revendications précédentes,
    caractérisé en ce que
    la partie de raccordement (16) peut être déformée par emboutissage.
  6. Injecteur de carburant selon l'une des revendications précédentes,
    caractérisé en ce que
    le renfoncement (43, 43') est rempli de matériau d'amortissement (45) par coulage ou injection.
  7. Injecteur de carburant selon l'une des revendications 1 à 5,
    caractérisé en ce qu'
    un élément d'amortissement (45) sous la forme d'un anneau d'amortissement, en particulier d'un joint torique, est introduit dans le renfoncement (43, 43').
  8. Injecteur de carburant selon l'une des revendications 1 à 5,
    caractérisé en ce qu'
    un élément d'amortissement (45) sous la forme d'un élément de flexible est introduit dans le renfoncement (43, 43').
  9. Injecteur de carburant selon l'une des revendications précédentes,
    caractérisé en ce que
    le renfoncement (43, 43') peut être mis en place par roulage.
  10. Injecteur de carburant selon l'une des revendications précédentes,
    caractérisé en ce que
    la partie de raccordement (16) se compose d'un matériau ferrique, conducteur de flux magnétique.
EP00951263A 1999-07-14 2000-07-13 Soupape d'injection de carburant Expired - Lifetime EP1114250B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19932761A DE19932761A1 (de) 1999-07-14 1999-07-14 Brennstoffeinspritzventil
DE19932761 1999-07-14
PCT/DE2000/002278 WO2001006114A1 (fr) 1999-07-14 2000-07-13 Soupape d'injection de carburant

Publications (2)

Publication Number Publication Date
EP1114250A1 EP1114250A1 (fr) 2001-07-11
EP1114250B1 true EP1114250B1 (fr) 2005-01-26

Family

ID=7914648

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00951263A Expired - Lifetime EP1114250B1 (fr) 1999-07-14 2000-07-13 Soupape d'injection de carburant

Country Status (5)

Country Link
EP (1) EP1114250B1 (fr)
JP (1) JP2003504559A (fr)
CZ (1) CZ295158B6 (fr)
DE (2) DE19932761A1 (fr)
WO (1) WO2001006114A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1262654A4 (fr) * 2000-01-26 2005-04-06 Hitachi Ltd Injecteur de carburant electromagnetique
DE10332348A1 (de) * 2003-07-16 2005-02-03 Robert Bosch Gmbh Brennstoffeinspritzventil
JP4058024B2 (ja) * 2004-06-16 2008-03-05 株式会社ケーヒン 電磁式燃料噴射弁
DE102007016626A1 (de) * 2007-04-05 2008-10-16 Continental Automotive Gmbh Einspritzventil und Verfahren und Vorrichtung zum Betreiben des Einspritzventils

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5088467A (en) * 1984-03-05 1992-02-18 Coltec Industries Inc Electromagnetic injection valve
DE19547406B4 (de) * 1995-12-19 2007-10-31 Robert Bosch Gmbh Brennstoffeinspritzventil
DE19640782A1 (de) * 1996-10-02 1998-04-09 Bosch Gmbh Robert Ventil und Verfahren zur Herstellung eines Ventiles
DE19744739A1 (de) * 1997-10-10 1999-04-15 Bosch Gmbh Robert Brennstoffeinspritzventil

Also Published As

Publication number Publication date
JP2003504559A (ja) 2003-02-04
DE19932761A1 (de) 2001-01-18
DE50009352D1 (de) 2005-03-03
EP1114250A1 (fr) 2001-07-11
WO2001006114A1 (fr) 2001-01-25
CZ2001904A3 (cs) 2001-12-12
CZ295158B6 (cs) 2005-06-15

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