EP3380715B1 - Injecteur de carburant - Google Patents

Injecteur de carburant Download PDF

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Publication number
EP3380715B1
EP3380715B1 EP16775741.8A EP16775741A EP3380715B1 EP 3380715 B1 EP3380715 B1 EP 3380715B1 EP 16775741 A EP16775741 A EP 16775741A EP 3380715 B1 EP3380715 B1 EP 3380715B1
Authority
EP
European Patent Office
Prior art keywords
sleeve
nozzle needle
supporting element
shaped supporting
fuel injector
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.)
Active
Application number
EP16775741.8A
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German (de)
English (en)
Other versions
EP3380715A1 (fr
Inventor
Georg Sengseis
Friedrich KROEPL
Roland Mitter
Claus Minixhofer
Peter Luckeneder
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
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Publication of EP3380715A1 publication Critical patent/EP3380715A1/fr
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Publication of EP3380715B1 publication Critical patent/EP3380715B1/fr
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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
    • 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
    • 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
    • F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing 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
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/07—Fuel-injection apparatus having means for avoiding sticking of valve or armature, e.g. preventing hydraulic or magnetic sticking of parts
    • 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

Definitions

  • the invention relates to a fuel injector, in particular a common rail injector, for injecting fuel into a combustion chamber of an internal combustion engine according to the preamble of claim 1.
  • Such a fuel injector in particular common rail injector, is known from the DE 10 2009 001 704 A1 or from the not previously published DE 10 2014 209 997 known.
  • a high-pressure chamber is formed within a nozzle body of the injector housing.
  • a valve piece is furthermore arranged, which receives an end of a nozzle needle facing away from an injection opening.
  • the nozzle needle is subjected to force by means of a return spring in the closing direction, wherein the nozzle needle cooperates with a nozzle body seat and thereby at least one injection opening opens and closes.
  • the nozzle needle has a radially encircling shoulder, on which a first sleeve-shaped support element rests, wherein the first sleeve-shaped support element is subjected to force by the return spring in the closing direction of the nozzle needle.
  • the restoring spring is supported at its other end on a second sleeve-shaped support element, which is arranged facing away from the combustion chamber end face of the nozzle needle.
  • the mutually facing abutment surfaces of the first sleeve-shaped support member and the second sleeve-shaped support member are spaced from each other, wherein the distance 35 defines the maximum opening stroke in the closed position of the nozzle needle.
  • the stop surface of the first sleeve-shaped support element is located on the stop surface of the second sleeve-shaped support member. This can lead to a hydraulic bonding of the lead both stop surfaces. As a result, the needle closing movement is delayed, resulting in an imprecise injection follows.
  • the invention has the object of developing fuel injectors, in particular common rail injectors, according to the preamble of claim 1 in such a way that a more reliable and faster closing of the nozzle needle and thus a more accurate metering of reaching into the combustion chamber fuel quantity is possible ,
  • the fuel injector has an injector in which a liftably arranged nozzle needle is arranged in a high-pressure chamber for opening or closing at least one injection opening, which limits a control chamber with an end face and which cooperates with the other end face with a nozzle body seat for opening and closing the injection opening.
  • the nozzle needle on a first sleeve-shaped support member which is subjected to force in the closing direction of the nozzle needle and further, the nozzle needle on a second nozzle needle surrounding the sleeve-shaped support member which is arranged in the direction of the control chamber near end face of the nozzle needle, wherein the second support member axially in the closing direction of Nozzle needle is spaced from the first support member.
  • at least one of the mutually facing abutment surfaces of the first sleeve-shaped support member or the second sleeve-shaped support member has at least one recess.
  • the mutually facing abutment surfaces of two sleeve-shaped support elements are provided in such a manner with at least one recess that the contact surface is reduced.
  • the nozzle needle can be closed faster and faster in this way.
  • a dripping of the fuel into the combustion chamber is avoided by the faster closing of the nozzle needle thereby contributing to compliance with emission limits of diesel internal combustion engines.
  • the maximum opening stroke of the nozzle needle is fixed by the distance of the mutually facing abutment surfaces of the first sleeve-shaped support member and the second sleeve-shaped support member in the closed position of the nozzle needle.
  • These mutually facing abutment surfaces of the first sleeve-shaped support member and the second sleeve-shaped support member come into contact with each other at maximum opening of the nozzle needle and thus limit the opening stroke of the nozzle needle.
  • At least one recess of the abutment surfaces of the first sleeve-shaped support member or the second sleeve-shaped support member is formed as a groove.
  • the groove cross-section in the form of a triangle, a semicircle or a quadrilateral, in particular a square or a trapezoid is formed.
  • Such different groove shapes have the advantage that they allow little contact surfaces with little material removal of the respective abutment surfaces of the first sleeve-shaped support member and the second sleeve-shaped support member depending on the shape and thus favor a faster separation from each other during the closing operation of the nozzle needle.
  • grooves are arranged parallel to one another and / or radially and / or following the circumference. Furthermore, a curved or intersecting arrangement of the grooves may be provided.
  • grooves can be combined to form so-called groove groups whose group elements are arranged parallel to each other or enclose an angle with each other. This can be done very easily with, for example, a grinding wheel.
  • both the first sleeve-shaped support member and the second sleeve-shaped support member are disposed within a nozzle body, which is followed by an injector in the direction of the combustion chamber distal end face of the nozzle needle.
  • the nozzle body can be compact and thus save space.
  • the second sleeve-shaped support member is formed in several parts, in addition to a simpler installation, the individual functions of the second sleeve-shaped support element in each case to realize their own components.
  • a stop ring serves as a stop surface of the second sleeve-shaped support member to which a second component of the second sleeve-shaped support member, an adjustment, abuts, which limits the maximum opening stroke of the nozzle needle by its dimensions.
  • This also allows the use of different materials for the stop ring and the adjusting ring of the second tubular support member to ensure a long life adapted to their functions in the fuel injector.
  • the multi-part design of the second sleeve-shaped support member ensures a simple and cost-effective way to replace wear of one of the components of the second sleeve-shaped support member only only this wear-prone component.
  • a restoring spring is present, which exerts a restoring force on the first sleeve-shaped support element in the direction of the nozzle body seat, so that in the closed position no fuel can flow via the at least one injection opening into the combustion chamber.
  • This application of force to the nozzle needle in the closing direction also makes it possible, in the event of possible interruptions in the activation of the nozzle needle, to move it in the closing direction and to prevent unwanted fuel injection into the combustion chamber of an internal combustion engine.
  • the return spring is arranged under prestress between the first sleeve-shaped support element and the second sleeve-shaped support element.
  • the nozzle needle has a radially circumferential shoulder, which serves as a support of the first sleeve-shaped support member.
  • FIG. 1 represents a fuel injector 1, here a common rail injector, which is used for injecting fuel into a combustion chamber, not shown, of an internal combustion engine, in particular a self-igniting internal combustion engine.
  • the fuel injector 1 has a multipart injector housing 2 which comprises a nozzle body 3 and an injector body 4 adjoining the nozzle body 3. By means of a nozzle clamping nut 50, a pressure-tight connection between the nozzle body 3 and the injector body 4 is formed.
  • a High-pressure chamber 6 is formed, which continues into the nozzle body 3, where it is formed by a stepped longitudinal bore.
  • the nozzle body 3 On the side facing the combustion chamber, the nozzle body 3 has at least one injection opening 5 extending from the pressure chamber for injecting fuel into the combustion chamber of the internal combustion engine.
  • the high-pressure chamber 6 can be filled via an inlet channel 51 with fuel under system pressure.
  • the inlet channel 51 in the central region of the high-pressure chamber 6, perpendicular to a longitudinal axis 7 of the fuel injector 1, is formed.
  • FIG. 1 illustrates the closed position of the nozzle needle 8, which closes the at least one injection opening 5 formed in the nozzle body 3.
  • a nozzle body seat 10 is formed on the inside of the nozzle body 3, with which the nozzle needle 8 cooperates. To open the injection opening 5, the nozzle needle 8 lifts off from the nozzle body seat 10 and thus enables a fuel flow from the high-pressure chamber 6 via the at least one injection opening 5 into the combustion chamber of the internal combustion engine.
  • the nozzle needle 8 is part of a nozzle module 54, which comprises a pin-shaped valve piston 13 on its combustion chamber remote end face.
  • the nozzle needle 8 and the valve piston 13 are connected to each other via a central piece 55, for example by laser welding seams.
  • the nozzle needle 8 is mounted in the closed position in the nozzle body seat 10 and by means of an electromagnet 26, see double arrow 53, is movable in the longitudinal direction.
  • the nozzle module 54 surrounds a first sleeve-shaped support member 14 and a second sleeve-shaped support member 16, wherein between the first sleeve-shaped support member 14 and the second sleeve-shaped support member 16, a return spring 15 is arranged under pressure bias.
  • FIG. 2 is a portion of the fuel injector according to the Fig. 1 which enlarges the region of the nozzle needle 8 with the first sleeve-shaped support element 14, the intermediate return spring 15 and the second sleeve-shaped support element 16.
  • the injector housing 2 comprises, on the side of the nozzle module 54 facing away from the combustion chamber, a valve piece 18 which is mounted on the valve piston 13 facing side has a blind hole 19.
  • the valve piston 13 dips into this blind hole 19 with its end.
  • the valve piston 13 and the blind hole 19 define a control chamber 20 which is hydraulically connected via an inlet bore 21 to the high-pressure chamber 6.
  • An outlet throttle 22 formed in the valve piece 18 into a low-pressure region 23 of the fuel injector 1 allows a hydraulic relief of the control chamber 20, wherein the outlet throttle 22 is connected to a drainage channel 52 which is arranged on the side of the injector housing 2 opposite the inlet channel 51 ,
  • the outlet throttle 22 can be closed by a spherical valve element 24, which is part of a control valve 24.
  • the control of the valve 24 via an electromagnet 26, since the spherical valve member 24 depends on a magnet armature. Magnetic energization initiates a lifting of the valve element 24 from the outlet throttle 22.
  • the control chamber 20 and the low-pressure region 23 can be hydraulically connected to one another. This leads to a pressure drop in the control chamber 20, which results in a reduction of the hydraulic closing force of the nozzle needle 8.
  • the nozzle needle 8 thus moves through the force acting in the longitudinal direction of the nozzle needle 8 force in the high-pressure chamber 6.
  • the first sleeve-shaped support element 14 is located, as in FIG. 2 shown on a radially circumferential shoulder 32 of the nozzle needle 8.
  • the second sleeve-shaped support element 16, which is arranged with intermediate storage of the return spring 15 on the first sleeve-shaped support member 14, together with the first sleeve-shaped support member forms a boundary for the maximum opening stroke of the nozzle needle 8.
  • At maximum opening stroke of the nozzle needle 8 are facing abutment surfaces 33, 34th the first sleeve-shaped support member 14 and the second sleeve-shaped support member 16 to each other.
  • the maximum opening stroke is determined by the axial distance 35 of the mutually facing abutment surfaces 33, 34 of the first sleeve-shaped support element 14 and of the second sleeve-shaped support element 16 in the closed position of the nozzle needle 8.
  • a function of the return spring 14 is the nozzle needle 8 in the direction of the at least one injection opening 5 in the To press the nozzle body seat 10 to avoid a fuel inflow into the combustion chamber of the internal combustion engine even when the fuel injector is switched off.
  • FIG. 3 illustrates a possible embodiment of the first sleeve-shaped support member 14 as a one-piece component.
  • the second sleeve-shaped support element 16 has a multi-part construction.
  • a possible embodiment of the second sleeve-shaped support member 16 is shown as a two-part component having an adjustment ring 56 with through holes 37 for the fuel and a arranged on the adjusting ring 56 stop ring 38.
  • the adjusting ring 56 forms the component of the second sleeve-shaped support member 16, which determines the limitation of the maximum opening stroke of the nozzle needle 8 and is completely penetrated in the installed position in the injector of the nozzle needle 8 in the axial direction.
  • the stop ring 38 has on the side facing away from the adjusting ring 56 a radially encircling collar 57, wherein the collar 57 serves as a support for the return spring 15.
  • Both the first sleeve-shaped support member 14 and the second sleeve-shaped support member 16 and the return spring 15 are mounted on the nozzle needle 8 before the nozzle needle 8 is welded to the center piece 55. Different diameters of nozzle needle 8 and center piece 55 cause the first sleeve-shaped support member 14, the second sleeve-shaped support member 16 and the return spring 15 are captively connected to the nozzle module 54.
  • the abutment surfaces 33, 34 of the first sleeve-shaped support element 14 and of the second sleeve-shaped support element 16 are not flat in the open position of the nozzle needle 8, as a result of which the adhesion forces are reduced.
  • the recesses 36 in the abutment surfaces 33, 34 of the first sleeve-shaped support member 14 and / or the second sleeve-shaped support member 16 after closing the spherical valve member 24 allow flowing the high-pressure fuel into exactly these recesses 36 and thus additionally accelerate the release of the Stop surfaces 33, 34 of the first sleeve-shaped support member 14 and the second sleeve-shaped support member 16th
  • FIG. 5 illustrates possible embodiments of groove cross-sections in the form of a triangle 136 (FIG. FIG. 5e ), a semicircle 236 ( FIG. 5b ) or a quadrilateral, in particular a square 336 (FIG. FIG. 5a ) or a trapezium 436 ( FIGS. 5c and 5d ).
  • FIG. 6 in plan view of a stop surface 33, 34 of the first sleeve-shaped support member 14 or the second sleeve-shaped support member 16 grooves which are parallel to each other 536 (FIG. FIG. 6a ) and / or radial 636 ( FIG.
  • the grooves have a curved 836, as in FIG. 6d shown or intersecting 936 course ( FIG. 6e ) on.
  • at least two groove groups 1036 may exist, with elements of a groove group arranged parallel to each other and elements of different groove groups 1036 forming an angle with each other.
  • the presented embodiments of the grooves are used to optimize for the faster detachment of the stop surfaces 33, 34 of the first sleeve-shaped support member 14 and the second sleeve-shaped support member 16 and are also in combinations on a respective stop surface 33 or 34 of the first sleeve-shaped support member 14 and the second sleeve-shaped support member 16 applicable.
  • groove shapes 39 are also possible, which fulfill the same function as the already mentioned groove shapes 39 and ensure, for example, the roughness of the stop faces 33, 34 of the first sleeve-shaped support element 14 and of the second sleeve-shaped support element 16.

Claims (12)

  1. Injecteur de carburant, en particulier injecteur à rampe commune (1), comprenant un boîtier d'injecteur (2) dans lequel est disposé, dans un espace haute pression (6), un pointeau de buse (8) disposé avec une course de déplacement pour ouvrir ou fermer au moins une ouverture d'injection (5), le pointeau de buse limitant avec un côté frontal un espace de commande (20) et avec l'autre côté frontal coopérant avec un siège de corps de buse (10) pour ouvrir et fermer l'ouverture d'injection (5), le pointeau de buse (8) présentant un premier élément de support en forme de douille (14) qui est sollicité par force dans la direction de fermeture du pointeau de buse (8) et le pointeau de buse (8) présentant un deuxième élément de support en forme de douille (16) entourant le pointeau de buse (8), qui est disposé dans la direction du côté frontal du pointeau de buse (8) proche de l'espace de commande et lequel deuxième élément de support (16) est disposé à distance du premier élément de support (14) axialement dans la direction de fermeture du pointeau de buse (8),
    caractérisé en ce
    qu'au moins l'une des surfaces de butée tournées l'une vers l'autre (33, 34) du premier élément de support en forme de douille (14) ou du deuxième élément de support en forme de douille (16) présente au moins un évidement (36), les surfaces de butée tournées (33, 34) l'une vers l'autre du premier élément de support en forme de douille (14) et du deuxième élément de support en forme de douille (16) venant en appui l'une contre l'autre en cas de course d'ouverture maximale du pointeau de buse (8) pour limiter la course d'ouverture du pointeau de buse (8), de sorte qu'au moins une ouverture d'injection (5) soit ouverte, la course d'ouverture maximale du pointeau de buse (8) étant fixée par la distance (35) des surfaces de butée tournées l'une vers l'autre du premier élément de support en forme de douille (14) et du deuxième élément de support en forme de douille (16) dans la position de fermeture du pointeau de buse (8).
  2. Injecteur de carburant selon la revendication 1,
    caractérisé en ce
    qu'au moins un évidement (36) de la surface de butée (33) du premier élément en forme de douille (14) ou l'évidement (36) de la surface de butée (34) du deuxième élément en forme de douille (16) est réalisé sous forme de rainure.
  3. Injecteur de carburant selon la revendication 2,
    caractérisé en ce que
    la section transversale de la rainure présente la forme d'un triangle (136), d'un demi-cercle (236) ou d'un quadrilatère, en particulier d'un carré (336) ou d'un trapèze (436).
  4. Injecteur de carburant selon l'une quelconque des revendications 2 et 3,
    caractérisé en ce que
    les rainures sont disposées parallèlement les unes aux autres (536) et/ou radialement (636) et/ou le long de la périphérie (736).
  5. Injecteur de carburant selon l'une quelconque des revendications 2 à 4,
    caractérisé en ce que
    les rainures sont disposées sous forme courbe (836) et/ou s'intersectent (936).
  6. Injecteur de carburant selon l'une quelconque des revendications 2 à 5,
    caractérisé en ce
    qu'au moins deux groupes de rainures (1036) sont prévus, leurs éléments de groupes étant disposés parallèlement les uns aux autres et lesdits groupes de rainures étant orientés suivant un certain angle les uns par rapport aux autres.
  7. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    le premier élément de support en forme de douille (14) et le deuxième élément de support en forme de douille (16) sont disposés à l'intérieur d'un corps de buse (3) auquel se raccorde un corps d'injecteur (4) dans la direction du côté frontal du pointeau de buse (8) éloigné de la chambre de combustion.
  8. Injecteur de carburant selon la revendication 7,
    caractérisé en ce que
    le deuxième élément de support en forme de douille (16) est fixé au corps d'injecteur (2) avec son côté frontal tourné vers l'espace de commande.
  9. Injecteur de carburant selon l'une quelconque des revendications 1, 7 ou 8,
    caractérisé en ce que
    le deuxième élément de support en forme de douille (16) est réalisé en plusieurs parties.
  10. Injecteur de carburant selon l'une quelconque des revendications 1, 7, 8 ou 9,
    caractérisé en ce
    qu'il est prévu un ressort de rappel (15) qui exerce une force de rappel sur le premier élément de support en forme de douille (14) dans la direction du siège de corps de buse (10).
  11. Injecteur de carburant selon la revendication 10, que le ressort de rappel (15) est disposé avec précontrainte entre le premier élément de support en forme de douille (14) et le deuxième élément de support en forme de douille (16).
  12. Injecteur de carburant selon l'une quelconque des revendications 1, 7 ou 8,
    caractérisé en ce que
    le pointeau de buse (8) présente un épaulement radialement périphérique (32), le premier élément de support en forme de douille (14) s'appliquant axialement sur l'épaulement radialement périphérique (32) du pointeau de buse (8).
EP16775741.8A 2015-11-23 2016-10-05 Injecteur de carburant Active EP3380715B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015223043.0A DE102015223043A1 (de) 2015-11-23 2015-11-23 Kraftstoff-Injektor
PCT/EP2016/073732 WO2017089017A1 (fr) 2015-11-23 2016-10-05 Injecteur de carburant

Publications (2)

Publication Number Publication Date
EP3380715A1 EP3380715A1 (fr) 2018-10-03
EP3380715B1 true EP3380715B1 (fr) 2019-09-04

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Application Number Title Priority Date Filing Date
EP16775741.8A Active EP3380715B1 (fr) 2015-11-23 2016-10-05 Injecteur de carburant

Country Status (5)

Country Link
US (1) US10415522B2 (fr)
EP (1) EP3380715B1 (fr)
JP (1) JP6496458B2 (fr)
DE (1) DE102015223043A1 (fr)
WO (1) WO2017089017A1 (fr)

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Publication number Priority date Publication date Assignee Title
US11466652B2 (en) * 2017-06-14 2022-10-11 Cummins Inc. Fuel injector having a self-contained replaceable pilot valve assembly
DE102022200978A1 (de) * 2022-01-31 2023-08-03 Robert Bosch Gesellschaft mit beschränkter Haftung Magnetbaugruppe für einen Kraftstoffinjektor und Kraftstoffinjektor

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EP2175124B1 (fr) * 2006-10-16 2014-09-24 Ganser-Hydromag AG Injecteur de carburant pour moteurs à combustion interne
DE102007011790A1 (de) 2007-03-12 2008-09-18 Robert Bosch Gmbh Steuerventileinrichtung
DE102008040015A1 (de) 2008-06-30 2009-12-31 Robert Bosch Gmbh Magnetventil, Kraftstoff-Injektor sowie Herstellungsverfahren
DE102009001704B4 (de) 2009-03-20 2018-06-28 Robert Bosch Gmbh Kraftstoff-Injektor
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JP6061074B2 (ja) * 2012-09-28 2017-01-18 株式会社ケーヒン 燃料噴射弁
DE102014209997A1 (de) 2014-05-26 2015-11-26 Robert Bosch Gmbh Common-Rail-Injektor
JP6483574B2 (ja) * 2015-08-25 2019-03-13 株式会社デンソー 燃料噴射装置

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US10415522B2 (en) 2019-09-17
US20180340500A1 (en) 2018-11-29
DE102015223043A1 (de) 2017-05-24
JP6496458B2 (ja) 2019-04-03
WO2017089017A1 (fr) 2017-06-01
EP3380715A1 (fr) 2018-10-03
JP2018532945A (ja) 2018-11-08

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