EP1967726B1 - Injecteur à soupape magnétique - Google Patents

Injecteur à soupape magnétique Download PDF

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Publication number
EP1967726B1
EP1967726B1 EP20080100880 EP08100880A EP1967726B1 EP 1967726 B1 EP1967726 B1 EP 1967726B1 EP 20080100880 EP20080100880 EP 20080100880 EP 08100880 A EP08100880 A EP 08100880A EP 1967726 B1 EP1967726 B1 EP 1967726B1
Authority
EP
European Patent Office
Prior art keywords
armature
valve
fuel injector
anchor bolt
neck
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.)
Ceased
Application number
EP20080100880
Other languages
German (de)
English (en)
Other versions
EP1967726A2 (fr
EP1967726A3 (fr
Inventor
Friedrich Howey
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 EP1967726A2 publication Critical patent/EP1967726A2/fr
Publication of EP1967726A3 publication Critical patent/EP1967726A3/fr
Application granted granted Critical
Publication of EP1967726B1 publication Critical patent/EP1967726B1/fr
Ceased legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
    • F02M63/0071—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059 characterised by guiding or centering means in valves including the absence of any guiding means, e.g. "flying arrangements"
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
    • F02M63/0075—Stop members in valves, e.g. plates or disks limiting the movement of armature, valve or spring
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
    • F02M63/0077—Valve seat details
    • 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
    • F02M2547/00—Special features for fuel-injection valves actuated by fluid pressure
    • F02M2547/003—Valve inserts containing control chamber and valve piston

Definitions

  • DE 196 50 865 A1 describes a solenoid valve for controlling the fuel pressure in a control chamber of an injection valve, such as a common rail injection system. Via the fuel pressure in the control chamber, a stroke movement of a valve piston is controlled, with which an injection opening of the injection valve is opened or closed.
  • the solenoid valve comprises an electromagnet, a movable armature and a valve member which is moved with the armature and acted upon by a valve closing spring in the closing direction and which cooperates with the valve seat of the solenoid valve and thus controls the fuel drain from the control chamber.
  • the two-piece anchor comprises an anchor bolt and an anchor plate slidably received on the anchor bolt against the force of a return spring in the closing direction of the valve member under the action of its inertial mass, which is secured to the anchor bolt by means of a lock washer and a securing sleeve surrounding it.
  • the locking sleeve and the locking washer are enclosed by the magnetic core, resulting in an increased space requirement and resulting in a higher diameter in the magnetic core. Due to the higher diameter in the magnetic core in turn results in a limitation of the magnetic flux.
  • a fuel injector with a solenoid valve via which an armature assembly is actuated, which comprises at least one anchor plate and an anchor bolt, and with a valve piece, in which a control chamber is executed.
  • the valve piece has a neck in which the anchor bolt is guided along a guide length.
  • valve piece and the design of the anchor assembly comprising the anchor bolt and the anchor plate to simplify considerably. It is proposed to make the top of the valve piece such that it also accommodates a dial as a so-called Kochhubin in addition to the function of the anchor bolt guide, which is guided on the anchor bolt and with which the downward movement of the anchor plate is limited.
  • a safety sleeve By this arrangement of the over-stroke disc can be dispensed with a safety sleeve, which prevents hitherto used in the embodiments of fuel injectors from wandering the Kochhubinflammatory.
  • the types of fuel injectors used so far are relatively expensive. There must be a valve seat in the valve member in the form of a cone, a long guide surface along the anchor bolt, a guide surface in the armature guide and a guide surface in the anchor plate by means of the machining process, usually the grinding, produced. In addition, the quality of the guide of the anchor plate by an indirect guidance over the anchor bolt is relatively low.
  • the power transmission from the anchor plate to the anchor bolt is done via a sickle disc with which an overstroke is usually set. The asymmetric power transmission leads to tilting and wear at the contact point. The manufacture of the height-ground sickle plate is still extremely complex and the side-mounted mounting very complicated.
  • valve spring exerting a closing force on the anchor bolt introduces lateral force components into the assembly of anchor plate and anchor bolt. Due to the guiding play between the armature guide and the anchor bolt, this leads to a tilting of the anchor bolt in the armature guide. With strong lateral force, this tilt can also be present in the upper position of the anchor bolt when energized electromagnet, since an anchor bolt stop can rest on one side. This part of the previously set anchor stroke, ie the movement of the anchor bolt during operation, not fully utilized. This in turn leads to a lower injection quantity of fuel into the combustion chamber of an internal combustion engine. Added to this is the friction of the anchor bolt in the anchor guide, which also influences the movement of the anchor bolt.
  • valve seat to anchor bolt guide allows a simplification in terms of production technology, since these assemblies, ie valve seat and anchor bolt guide, can be machined in one operation, in particular by way of grinding. Therefore, the ball guide, which is at the bottom of the anchor bolt according to the solution DE 196 50 865 A1 is provided and has the function to compensate for the misalignment of leadership to seat omitted.
  • a concave surface for receiving a spherical closure member can be provided with omission of the ball guide.
  • the anchor plate may be made as a flat disc which is mounted from below on the anchor bolt and is supported on a shoulder formed on the anchor bolt.
  • the disc can be made by punching or by double-plan grinding.
  • the top and the bottom are identical, so that a position-independent mounting of the anchor plate on the anchor bolt can be realized.
  • the upper stop for the anchor plate can be represented by a flat paramagnetic disc on the magnetic core. The thickness of this preferably paramagnetically formed disc is chosen so that it adjusts the residual air gap within the magnetic circuit.
  • the downward movement of the armature plate is limited after closing the valve for pressure relief of a control chamber usually by the stop of the anchor plate on the top of the armature guide.
  • An in the downward movement of the armature plate after closing to the diverted Freiweg is also referred to as overstroke.
  • This overstroke is advantageously set by a rotationally symmetrical shim, which is placed on the top of the valve piece, in which the pressurized control chamber is formed.
  • the thesishubin, ie the rotationally symmetrical shim also limits the tilting of the anchor plate on the anchor bolt by contact of the armature plate on its outer diameter.
  • the over-stroke disk according to the proposed invention is relatively simple and in particular does not require a safety sleeve which, in previously used embodiments of fuel injectors, prevents the over-stroke disk from migrating out.
  • FIG. 1 is a section through a first embodiment of the present invention proposed fuel injector refer.
  • a fuel injector 10 can be removed, which is actuated by means of a solenoid valve 12.
  • the solenoid valve 12 is received in the upper region of an injector body 14 of the fuel injector 10.
  • the fuel injector 10 is designed substantially symmetrically to an axis 18.
  • the magnetic valve 12 includes a magnetic sleeve 20.
  • the magnetic sleeve 20 encloses a magnetic core 22, which in turn receives a magnetic coil 24.
  • the magnet sleeve 22 accommodating the magnetic core 22 and the magnet coil 24 is screwed to the injector body 14 by means of a union nut 26 at a screw connection 28.
  • the magnet sleeve 20 is sealed on its outer side by means of a sealing ring 30 against the injector body 14.
  • the solenoid valve 12 includes a valve spring 32.
  • the valve spring 32 is received substantially in a through hole of the magnetic core 22 and supported on the one hand on an armature assembly 34, in particular on the upper side of an anchor bolt 46 and on the other hand against a closing the solenoid valve 12 lid.
  • the solenoid valve 12 also includes the previously mentioned armature assembly 34.
  • the armature assembly 34 includes in addition to the previously mentioned valve spring 32, an anchor plate 40, a Kochhubin 44 and an anchor bolt 46 which is guided within a valve member 50.
  • the upper side of the valve piece 50 also performs the function of guiding the anchor bolt 46 of the armature assembly 34 in the axial direction.
  • a neck 92 is formed, which runs parallel to the longitudinal extent of the anchor bolt 46, forming an annular gap 80, as seen in the axial direction.
  • the neck 92 of the valve member 50 has an annular surface 94 on which in turn the over-stroke disk 44 is placed.
  • the anchor plate 40 of the armature assembly 34 extends, which has at least one opening 42 to allow passage of fuel discharged from a control chamber 54 in the direction of the low-pressure side sequence of the fuel injector 10.
  • the anchor bolt 46 of the armature assembly 34 includes a here formed spherical closure member 66.
  • the optionally at the lower end face of the anchor bolt 46 with the interposition of a closing element guide received, preferably spherical shaped closure member 66 cooperates with the seat 52 which is formed in the valve piece 50.
  • Below the seat 52 which may be formed as a flat seat, conical seat or the like, extends within the valve piece an outlet throttle 58.
  • About the outlet throttle 58 is also formed in the valve piece 50 control chamber 54 drucklastbar.
  • FIG. 1 shows that the control chamber 54 is continuously supplied with fuel at a system pressure level via an inlet throttle 56 from a high-pressure chamber 74, which in turn is subjected to fuel under system pressure.
  • a preferably needle-shaped injection valve member 62 is actuated.
  • the high-pressure chamber 74 within the injector 14 of the fuel injector 10 is sealed against the low pressure via a sealing ring 60, which is preferably made as a PTFE component.
  • valve piece 50 with neck 92 formed thereon, in which the anchor bolt 46 is guided is fastened in the injector body 14 of the fuel injector 10 by means of a valve screw 64.
  • the valve member 50 is pressed on its contact surface in the injector 14 and sealed low pressure side.
  • the downward movement of the armature plate 40 is limited by the Studentshubissue 44 on the end face 94 of the neck 92 of the valve piece 50 after closing of the solenoid valve.
  • the Studentshubissue 44 also limits the tilt of the armature plate 40 on the anchor bolt 46 by contact of the armature plate 40 at its outer diameter.
  • Those in the embodiment in FIG. 1 shown Kochhubissue 44 requires no locking sleeve.
  • the solenoid valve assembly to dispense with a separate component for the realization of the armature guide, since the leadership of the armature, in particular of the anchor bolt 46, takes place through the neck 92 of the valve member 50.
  • the annular gap 80 between the jacket surface of the anchor bolt 46 and the inside of the neck 92 has at least one opening 48, via which the control quantity exiting the control chamber 54 when the ball-shaped closing element 66 opens into the low-pressure region of the fuel injector 10 can flow out.
  • the annular gap 80 and a valve chamber 88 in the interior of the solenoid valve assembly are hydraulically connected to one another.
  • the ball-shaped closing element 66 is received directly on the lower end face of the anchor bolt 46, so that a ball guide for the here spherically formed closing element 66, which would compensate for an offset of the guide and seat 52, can be dispensed with.
  • a ball guide for the here spherically formed closing element 66 which would compensate for an offset of the guide and seat 52, can be dispensed with.
  • the concentricity of the valve seat 52 to the anchor bolt guide 92 is excellent, since the valve seat 52 and the anchor bolt guide in one operation by a machining process such. As the grinding can be made.
  • the valve piece 50 is screwed by means of the valve screw 64 in the injector 14.
  • the closing element 66 is inserted into the seat 52, which is formed in the valve piece 50.
  • On the upper side of the valve piece 50 is the over-stroke disk 44, which serves as a lower stop for the anchor plate 40.
  • the anchor bolt 46 which has at least one bevel 72 on its lateral surface, via which fuel enters the annular gap 80, is inserted into the valve piece 50 and thereby takes the Matterhubin 44 and the armature plate 40 with at least one opening 42 at its outer diameter.
  • the armature plate 40 On the armature plate 40 in turn is the residual air gap disc 38, which limits the upper stop of the armature plate 40 by this is supported in operation on the lower end side of the magnetic core 22 of the solenoid valve assembly of the fuel injector 10.
  • the anchor bolt 46 is acted upon by the valve spring 32 indicated by reference numeral 32 in the closing direction with a closing force.
  • a small current is applied to the solenoid coil 24 received in the magnetic core 22 of the solenoid valve assembly.
  • the resulting magnetic field is sufficient to apply the anchor plate 40 to the shoulder, ie the stop 76 on the anchor bolt 46, which does not yet lead to an opening of the valve.
  • a starting current is applied to the magnetic coil 24.
  • the magnetic force generated by the attraction current attracts the armature plate 40, which is supported on the stop 76 of the anchor bolt 46 and leads to the opening of the valve.
  • the ball-shaped closing element 66 on the lower end face of the anchor bolt 46 is lifted in the valve piece 50 by the pressure applied from below from its seat 52.
  • the armature plate 40 abuts on the magnetic core 22 via the residual air gap disk 38.
  • At least one flattening 72 or a bevel or the like is located on the lateral surface of the anchor bolt 46 of the armature assembly 34, so that within the armature guide surface, ie through the annular gap 80 between the outer surface of the armature Anchor bolt 46 and the inner peripheral surface of the neck 92 diverted tax amount in the valve chamber 88, that flows to the low pressure side of the solenoid valve assembly.
  • FIG. 2 shows a further embodiment of the present invention proposed valve piece.
  • FIG. 2 shows that according to this embodiment of the valve member 50 on the anchor bolt 46 of the armature assembly 34 no bevel 72 or no flattening is formed. Instead, located at the bottom, the seat 52 facing end face of the anchor bolt 46 is a spherical cap 82.
  • the spherical cap 82 forms a receptacle for in accordance with the embodiment FIG. 2 Spherically shaped closing element 66, with which the seat 52 is closed in the valve piece 50.
  • the outlet throttle 58 via which the in FIG. 2 not shown control chamber 54 is depressurized.
  • control chamber from this outflowing amount flows into a spherical cap 82 within the valve member 50 surrounding space.
  • at least one bore 86 extends to the valve chamber 88 of the solenoid valve assembly.
  • the at least one bore 86 which connects the hydraulic space which surrounds the spherical cap 82, with the valve chamber 88 extends in the valve piece 50 in FIG. 2 indicated obliquely, so that the wall thickness of the neck 92 of the valve member 50 is not affected by the course of the at least one bore 86 in the valve piece 50.
  • the armature plate 46 slidably received anchor plate 40 analogous to the embodiment according to FIG. 1 has at least one opening 42, but is acted upon by an armature spring 84.
  • the armature spring 84 is supported on the one hand on the underside of the anchor plate 40 and on the other hand at the bottom of the valve chamber 88 from.
  • the residual air gap disc 38 is attached to the underside of the magnetic core 22.
  • the thickness of the residual air gap disk 38 is defined analogously to the embodiment according to FIG. 1 the height of the residual air gap between the bottom of the residual air gap disc 38 and the top of the anchor plate 40th
  • valve member 50 includes the neck 92, on the annular surface 94, the over-stroke disc 44 rests.
  • An annular gap 80 extends between the lateral surface of the anchor bolt 46 and the inner peripheral surface of the neck 92.
  • Reference numeral 78 marks the guide length along which the anchor bolt 46 of the armature assembly 34 is guided in the valve piece 50 or neck 92 formed thereon.
  • the guide length 78 extends from the lower end face of the anchor bolt 46, ie above the spherical cap 82, to the beginning of the annular gap 80 between the lateral surface of the anchor bolt 46 and the inner peripheral surface of the neck 52.
  • the opening 48 in the neck 92 may also be omitted.
  • the end face of the valve member 50 is referred to, on the one hand, the armature spring 84 is supported and on the other hand, the at least one bore 86 opens for discharging the control amount.
  • the control amount does not flow along the guide length 78 of the anchor bolt 46, but is passed through the at least one bore 86 in the valve member 50 directly into the valve chamber 88 and can from there via the at least one opening 42 in the armature plate 40 flow in the return.
  • the armature spring 84 is introduced, which presses the armature plate 40 up against the stop 76 of the anchor bolt 46 instead of the low current in preparation for an injection process.
  • the spherical cap 82 which can then be used if the offset between the ball guide on the anchor bolt 46 to the seat 52 in the valve piece 50 is too large and thereby the tightness should be impaired.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fuel-Injection Apparatus (AREA)

Claims (9)

  1. Injecteur de carburant (10) comprenant une électrovanne (12), par le biais de laquelle est actionné un module d'armature (34), qui comprend au moins une plaque d'armature (40) et un boulon d'armature (46), ainsi qu'un élément de soupape (50) dans lequel est réalisé un espace de commande (54), l'élément de soupape (50) présentant un col (92) dans lequel est guidé le boulon d'armature (46) le long d'une longueur de guidage (78), caractérisé en ce qu'un disque de dépassement de course (44) tourné vers la plaque d'armature (40), qui est guidé sur le boulon d'armature (46), repose sur un côté frontal (94) du col (92).
  2. Injecteur de carburant selon la revendication 1, caractérisé en ce que la plaque d'armature (40) est reçue sur le boulon d'armature (46) entre le disque de dépassement de course (44) et une butée (76) de forme annulaire.
  3. Injecteur de carburant selon la revendication 1, caractérisé en ce qu'un disque d'entrefer résiduel (38) est reçu entre un noyau magnétique (22) de l'électrovanne (12) et la plaque d'armature (40).
  4. Injecteur de carburant selon la revendication 3, caractérisé en ce que le disque d'entrefer résiduel (38) est fabriqué en matériau paramagnétique.
  5. Injecteur de carburant selon la revendication 1, caractérisé en ce que le col (92) de l'élément de soupape (50) présente au moins une ouverture (48) par le biais de laquelle une fente annulaire (80) entre le boulon d'armature (46) et le col (92) et un espace de soupape (88) du côté basse pression sont connectés hydrauliquement.
  6. Injecteur de carburant selon la revendication 1, caractérisé en ce que le boulon d'armature (46) présente sur sa surface d'enveloppe au moins un méplat (72), dont l'étendue axiale sur le boulon d'armature (46) dépasse la longueur de guidage (78) du boulon d'armature (46) dans le col (92).
  7. Injecteur de carburant selon la revendication 1, caractérisé en ce que l'élément de soupape (50) présente un siège (52) pour un élément de fermeture (66), qui est guidé directement sur le boulon d'armature (46) ou dans une calotte sphérique (82).
  8. Injecteur de carburant selon la revendication 1, caractérisé en ce que l'élément de soupape (50) présente au moins un alésage (86) qui débouche au niveau d'un côté frontal (90) de l'élément de soupape (50) et qui relie hydrauliquement un espace hydraulique au-dessus du siège (52) à un espace de soupape (88) de l'électrovanne (12).
  9. Injecteur de carburant selon la revendication 1, caractérisé en ce que la plaque d'armature (40) présente des côtés supérieur et inférieur identiques et contient au moins une ouverture (42).
EP20080100880 2007-03-07 2008-01-24 Injecteur à soupape magnétique Ceased EP1967726B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200710011047 DE102007011047A1 (de) 2007-03-07 2007-03-07 Magnetventilinjektor

Publications (3)

Publication Number Publication Date
EP1967726A2 EP1967726A2 (fr) 2008-09-10
EP1967726A3 EP1967726A3 (fr) 2009-05-20
EP1967726B1 true EP1967726B1 (fr) 2011-04-06

Family

ID=39391391

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20080100880 Ceased EP1967726B1 (fr) 2007-03-07 2008-01-24 Injecteur à soupape magnétique

Country Status (2)

Country Link
EP (1) EP1967726B1 (fr)
DE (2) DE102007011047A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008040015A1 (de) * 2008-06-30 2009-12-31 Robert Bosch Gmbh Magnetventil, Kraftstoff-Injektor sowie Herstellungsverfahren
AT508049B1 (de) * 2009-03-17 2016-01-15 Bosch Gmbh Robert Vorrichtung zum einspritzen von kraftstoff in den brennraum einer brennkraftmaschine
FR2953268B1 (fr) * 2009-12-02 2012-04-06 Bosch Gmbh Robert Soupape electromagnetique de commande d'un injecteur ou de regulation de pression d'un accumulateur de carburant a haute pression
DE102012224403A1 (de) * 2012-12-27 2014-07-03 Robert Bosch Gmbh Druckregelventil für ein Kraftstoffeinspritzsystem
DE102015211705A1 (de) * 2015-06-24 2016-12-29 Robert Bosch Gmbh Kraftstoffinjektor mit Steuerventil
US11746734B2 (en) * 2018-08-23 2023-09-05 Progress Rail Services Corporation Electronic unit injector shuttle valve

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19650865A1 (de) 1996-12-07 1998-06-10 Bosch Gmbh Robert Magnetventil
JP3844092B2 (ja) * 1997-01-23 2006-11-08 株式会社日本自動車部品総合研究所 蓄圧式燃料噴射装置
DE19708104A1 (de) 1997-02-28 1998-09-03 Bosch Gmbh Robert Magnetventil
DE19955663A1 (de) * 1999-11-19 2001-05-23 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen
DE10122241A1 (de) * 2001-05-08 2002-12-05 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen

Also Published As

Publication number Publication date
DE502008003063D1 (de) 2011-05-19
EP1967726A2 (fr) 2008-09-10
EP1967726A3 (fr) 2009-05-20
DE102007011047A1 (de) 2008-09-11

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