EP3559438B1 - Injecteur de carburant et utilisation de celui-ci - Google Patents

Injecteur de carburant et utilisation de celui-ci Download PDF

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Publication number
EP3559438B1
EP3559438B1 EP17798174.3A EP17798174A EP3559438B1 EP 3559438 B1 EP3559438 B1 EP 3559438B1 EP 17798174 A EP17798174 A EP 17798174A EP 3559438 B1 EP3559438 B1 EP 3559438B1
Authority
EP
European Patent Office
Prior art keywords
magnet armature
valve piece
fuel injector
magnet
armature
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
EP17798174.3A
Other languages
German (de)
English (en)
Other versions
EP3559438A1 (fr
Inventor
Lorenz Zerle
Oezguer Tuerker
Stefan Betz
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 EP3559438A1 publication Critical patent/EP3559438A1/fr
Application granted granted Critical
Publication of EP3559438B1 publication Critical patent/EP3559438B1/fr
Active 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
    • F02M63/0017—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means
    • F02M63/0021—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means characterised by the 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
    • 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
    • F02M63/0078—Valve member details, e.g. special shape, hollow or fuel passages in the valve member
    • F02M63/008—Hollow valve members, e.g. members internally guided

Definitions

  • the invention relates to a fuel injector according to the preamble of claim 1.
  • the invention also relates to the use of a fuel injector according to the invention.
  • a fuel injector with the features of the preamble of claim 1 is from EP 2 129 903 B1 known to the applicant.
  • the known fuel injector has a magnet armature which is hat-shaped in cross section and which is used to control the outflow of fuel from a control chamber of a valve piece.
  • the movement of an injection member (nozzle needle), which in turn is used to open or release at least one injection opening in the injector housing, is controlled in a known manner by blocking or releasing a drain hole in the valve piece connected to the control chamber.
  • the known magnet armature has a through-hole into which a pin-shaped extension of the valve piece protrudes, the extension serving to support the magnet armature radially.
  • the magnet armature in the area of its through-hole on the side facing the valve piece has a seat edge which, together with an inclined sealing surface running radially around a longitudinal axis of the valve piece, forms a sealing seat in the lowered position of the magnet armature, thereby preventing the drain to prevent fuel from leaving the control room.
  • the area of the radial guide surface of the valve piece for the magnet armature, which is formed on the extension has the same radial distance in relation to the longitudinal axis as the sealing edge on the magnet armature. This has the consequence that the area of the valve piece, which is used for the radial mounting of the magnet armature, is exposed to the pressure of the control chamber and thus high or system pressure.
  • Another fuel injector is from the EP 2 749 799 A1 known.
  • An essential criterion for the accuracy of the metering of the fuel quantity is the achievement of a specific stroke of the magnet armature or of the valve member closing the control chamber.
  • the (maximum) armature stroke is dependent on the dimensioning and tolerance of various components, especially at the start of operation of a fuel injector, on the component temperatures. Components that are subjected to system or high pressure, especially in the area of the sealing of the drain hole from the control chamber, are exposed to greater heating than areas of components that are relatively far away from this area, since the fuel injector installed in the engine block is in the area of its Injector housing still has a relatively low temperature.
  • the different degrees of heating of the components relevant for the armature stroke have the consequence that if the armature heats up or expands to a greater extent than the components surrounding the armature, the (maximum) armature stroke is shortened or less than in a state in which the for the armature stroke essential components have at least almost the same temperature.
  • This has the consequence that - viewed over the operating time of the fuel injector - armature lifts of different heights are achieved with the same current supply to a magnet coil serving for the lifting movement of the magnet armature, the difference being a few micrometers.
  • the armature stroke must be increased by a so-called lead value to compensate for the temperature effects.
  • the fuel injector according to the invention with the features of claim 1 has the advantage that it always has at least almost the same armature stroke almost independently of the temperature, that is to say in particular also at the start of the start-up of the fuel injector.
  • this means that the area of the radial guidance of the magnet armature is spaced relatively far from the sealing area, which is under system pressure.
  • the invention makes use of the fact that the (temperature-dependent) linear expansion of the armature turns out to be smaller, the more compact or shorter the armature in Is formed in the direction of its longitudinal axis. Therefore, according to the invention, the magnet armature has a disk-shaped section extending radially around the longitudinal axis, on the outer circumference of which the guide section protruding in the direction of the valve piece is arranged, the inner wall of which interacts with a guide area on the valve piece.
  • the magnet armature which is approximately cup-shaped in cross section, can either be configured as a two-part magnet armature or as a one-piece magnet armature.
  • the radially circumferential section in the form of a guide sleeve can optionally be made of an amagnetic material or metal.
  • the connection between the guide sleeve and the central, disk-shaped section can in particular be made by a welded connection in the form of a laser weld seam.
  • a one-piece, i.e. monolithic, design of the magnet armature makes it possible to manufacture it as a sintered component, since this enables relatively inexpensive manufacture.
  • valve piece which enables the possibility of an axially particularly short magnet armature and an axially relatively long valve piece in the guide area for the magnet armature, provides that the valve piece has at least one, preferably has a plurality of outflow bores arranged at equal angular distances from one another, which has / have an outlet in the area of the guide surface of the valve piece, the outlet connecting the outlet bore for the control chamber to a low-pressure area when the valve member is raised.
  • outflow bores are arranged at an inclined angle with respect to the longitudinal axis, such that the sealing surface on the extension of the valve piece is at a greater distance from the control chamber in relation to the longitudinal axis than the outlets of the outflow bores.
  • magnet armature which makes it possible to position the sealing seat between the magnet armature and the valve piece more axially in the direction of the control chamber, provides that the magnet armature has a pin-shaped or sleeve-shaped protruding in the direction of the valve piece in a central area having the first extension, on whose end face facing the valve piece the sealing edge is formed, and that the first extension dips into a recess of the valve piece at least when the magnet armature is lowered.
  • a further structurally preferred embodiment of the magnet armature provides that it has in a central area a pin-shaped or sleeve-shaped second extension projecting in the direction of the magnet coil or magnet core, which axially into a through opening of a magnet core with little radial play immersed. Immersing the The second extension into the through-opening of the magnet core has the advantage that the relatively long axially guide reduces leakage losses that typically arise from an armature bolt axially penetrating the magnet armature.
  • the at least one outlet of the outflow bore opens in the area of the magnet armature and that the magnet armature has at least one passage opening which is arranged in overlap with the outlet.
  • the outlet of the at least one outflow bore opens out on the side facing away from the magnet coil below the magnet armature.
  • the magnet armature at least in the overlap area with the end face of the valve piece facing the magnet armature has at least one passage.
  • the background to this is that it is desirable after the end of the current flow, ie to form the sealing seat between the Magnet armature and the valve piece to enable the fastest possible closing movement.
  • this assumes that there is no fuel between the end face of the valve piece facing the disk-shaped section of the magnet armature and the disk-shaped section of the magnet armature, which would otherwise lead to hydraulic damping of the magnet armature closing movement. This attenuation can be prevented or reduced by the mentioned passage on the magnet armature.
  • the number and size of the passages can be adapted to the desired damping behavior of the magnet armature.
  • the invention encompasses the use of a fuel injector according to the invention for compression-ignition internal combustion engines as described so far, the fuel injector being designed to work at a system pressure of more than 2000 bar.
  • the fuel injector 100 shown in the figures is used to inject fuel into the combustion chamber, not shown, of a compression-ignition internal combustion engine.
  • the fuel injector 100 is part of a so-called common rail injection system, which preferably has a system pressure of more than 2000 bar.
  • the fuel injector 100 has an injector housing 11 into which a pressure port 12 can be screwed.
  • the pressure port 12 is connected to a fuel supply line, not shown, and is used to supply a high-pressure chamber 13 with fuel that is under high pressure or under system pressure.
  • the high pressure chamber 13 is formed in a recess 14 of the injector housing 11, in which a valve piece 15 is also inserted.
  • the valve piece 15 has a recess extending from an end face of the valve piece 15 in the form of a blind hole-shaped bore 17 in which a nozzle needle 20 serving as an injection member 19 is arranged so as to be movable along a longitudinal axis 22.
  • the nozzle needle 20 is used in a known manner to open or close at least one injection opening formed in the injector housing 11, via which the fuel can be discharged from the high-pressure chamber 13 into the combustion chamber of the internal combustion engine.
  • the position shown for the nozzle needle 20 is in its lowered position that closes the at least one injection opening.
  • the outflow bore 26 has a section having a smaller flow cross section for forming an outflow throttle 29.
  • the control chamber 25 can be filled from the high-pressure chamber 13 by means of at least one inlet bore 30.
  • valve piece 15 is seated axially with a section 31 of enlarged diameter on a stepped shoulder 32 of the recess 14 in the injector housing 11 and is axially against the shoulder 32 by means of a clamping nut 34 tense.
  • valve piece 15 On the side of section 31 facing away from control chamber 25, valve piece 15 has an approximately pin-shaped extension 35, on whose side facing away from control chamber 25 the drain hole 26 opens.
  • a conically arranged sealing surface 38 that runs radially around the longitudinal axis 22 is provided on the valve piece 15 near the mouth area 37 of the drain hole 26 ( Figs. 2 and 3 ).
  • the sealing surface 38 acts, as in particular based on the Fig. 3 can be seen, together with a sealing edge 42 which is embodied on a magnet armature 40 serving as a valve member and likewise encompasses radially around the longitudinal axis 22.
  • the magnet armature 40 can be raised and lowered in the direction of the longitudinal axis 22. In the position of the armature 40 shown in the figures, it has its lower position facing the valve piece 15, in which the sealing edge 42 interacts with the sealing surface 38 to form a sealing seat 43 in order to prevent fuel from flowing out of the control chamber 25.
  • the area of the sealing surface 38 on the valve piece 15 is formed within a recess 45 on the valve piece 15, the recess 45 having a radially circumferential edge 47.
  • a plurality of outflow bores 48 preferably arranged at equal angular distances from one another, are provided, which are arranged at an inclined angle a, for example between 25 ° and 60 °, with respect to a perpendicular to the longitudinal axis 22.
  • the outflow bores 48 start from the area of the inner wall 49 of the recess 45 and open in the area of a radially circumferential guide area 50 on the extension 35 of the valve piece 15 in the area of an outlet 52 each the mouth area 37 of the drain hole 26, the recess 45 and the drain holes 48 in the low-pressure area 28 of the fuel injector 100.
  • the magnet armature 40 has an approximately disk-shaped section 54 which runs radially around the longitudinal axis 22 and which is surrounded by a radially circumferential, in Direction to the control chamber 25 projecting guide section 56 is limited.
  • the guide section 56 interacts with its inner wall 58 with the guide region 50 on the extension 35, in such a way that a radial guide for the magnet armature 40 is formed between the extension 35 and the guide section 56.
  • the guide section 56 of the magnet armature 40 preferably has several passage openings 60 arranged in the manner of elongated holes in the circumferential direction of the guide section 56, which are preferably arranged at non-uniform angular distances from one another around the longitudinal axis 22, in order to be independent of the angular position of the magnet armature 40 in relation to the longitudinal axis 22 always to be arranged in overlap with the outlets 52 of the outflow bores 48.
  • the passages 60 have a height such that, regardless of the axial position of the magnet armature 40 in relation to the longitudinal axis 22, an overlap between the outlets 52 and the passages 60 is achieved. The radial guidance of the magnet armature 40 thus takes place both in an axial area above the passages 60 and in an axial area (in each case with reference to the longitudinal axis 22) below the passages 60.
  • the plate-shaped section of the magnet armature 40 also has a plurality of further passages 62, preferably arranged at uniform angular intervals around the longitudinal axis 22, in the form of slots protruding radially away from the longitudinal axis 22. These slots extend up to the edge of the disk-shaped section of the magnet armature 40 and beyond that somewhat in the direction of the radially circumferential guide region 50 of the magnet armature 40 Fig.
  • the (lower) end face 64 of the magnet armature 40 facing the valve piece 15 is arranged in the closed position of the magnet armature 40 with the formation of only a small axial gap 65 to the end face 66 in the region of the edge 47 of the valve piece 15.
  • the armature 40 also has a first extension 68 on the side facing the valve piece 15, which protrudes axially into the recess 45 of the valve piece 15, the sealing edge 42 being formed on the first extension 68.
  • the sealing edge 42 has a distance a from the longitudinal axis 22 which is smaller than the distance A of the inner wall 58 from the Longitudinal axis 22 ( Fig. 3 ).
  • the magnet armature 40 has a second extension 70 on the side facing away from the valve piece 15, the two extensions 68, 70 being penetrated by a through-hole 72, one in the Fig. 1 recognizable anchor bolt 73 surrounded radially.
  • the armature bolt 73 is arranged in the area of a through opening 75 of a magnet core 76.
  • the second extension 70 of the magnet armature 40 dips axially into the through opening 75 of the magnet core 76.
  • a compression spring 78 radially surrounding the armature bolt 73 is supported on the second extension 70, which acts on the magnet armature 40 by spring force and acts on it in the direction of its closed position.
  • the magnet armature 40 interacts with a magnet coil 80 which is arranged in the area of the magnet core in a recess extending radially around the longitudinal axis 22 and which can be electrically contacted via connection pins 81, 82 or can be supplied with a supply voltage.
  • the magnet coil 80 When the magnet coil 80 is energized, the magnet armature 40 is raised from its closed position counter to the spring force of the compression spring 78 in order to allow pressure media to flow out of the control chamber 25. In this case, the magnet armature 40 rests axially against the magnet core 76 with a residual air gap disk (not shown) in between, whereby the maximum armature stroke of the magnet armature 40 is limited.
  • Fig. 4 is an opposite of the Figs. 2 and 3 modified armature 40a shown.
  • the magnet armature 40a differs from the magnet armature 40 in that it is either made shorter in relation to its axial extent or length, ie has an axially shorter guide section 56, or that the outlets 52 of the outflow bores 48 are below a lower end edge 84 of Guide portion 56 are arranged. As a result, it is not necessary for the magnet armature 40a to have passages 60.

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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)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • Fuel-Injection Apparatus (AREA)

Claims (9)

  1. Injecteur de carburant (100), comportant un boîtier d'injecteur (11) dans lequel un élément d'injection (19) est guidé de manière à pouvoir effectuer un mouvement de va-et-vient, comportant une pièce de soupape (15) dans laquelle un évidement (17) est réalisé, lequel délimite une chambre de commande (25) conjointement avec l'élément d'injection (19), chambre de commande dont la pression peut être réduite par le biais d'un alésage de purge (26) dans une région basse pression (28) du boîtier d'injecteur (11), l'alésage de purge (26) pouvant être dégagé ou pouvant être fermé par un élément de soupape réalisé au moins indirectement comme armature magnétique (40 ; 40a) au moyen d'une arête d'étanchéité (42) dans la région d'une surface d'étanchéité (38) réalisée sur la pièce de soupape (15), et l'armature magnétique (40 ; 40a) coopérant avec une bobine magnétique (80) étant déplaçable le long d'un axe longitudinal (22) et étant guidée radialement par un prolongement (35) de la pièce de soupape (15) sur une région de guidage (50) radialement périphérique de la pièce de soupape (15), la distance (a) de l'arête d'étanchéité (42) sur l'armature magnétique (40 ; 40a) à l'axe longitudinal (22) étant inférieure à la distance (A) d'une partie de guidage (56 ; 56a) de l'armature magnétique (40 ; 40a) coopérant avec la région de guidage (50) sur la pièce de soupape (15) à l'axe longitudinal (22),
    caractérisé en ce que
    l'armature magnétique (40 ; 40a) comprend une partie (54) en forme de disque s'étendant radialement autour de l'axe longitudinal (22), partie sur la périphérique extérieure de laquelle est disposée la partie de guidage (56 ; 56a) faisant saillie en direction de la pièce de soupape (15), partie de guidage dont la paroi intérieure (58) coopère avec la région de guidage (50) sur la pièce de soupape (15) .
  2. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    la pièce de soupape (15) comprend au moins un, de préférences plusieurs alésages d'écoulement (48) disposés à des distances angulaires régulières autour de l'axe longitudinal (22), lesquels alésages d'écoulement comprennent une sortie (52) dans la région de la région de guidage (50) de la pièce soupape (15), la sortie (52) reliant l'alésage de purge (26) pour la chambre de commande (25), lorsque l'élément de soupape est soulevé, à la région basse pression (28).
  3. Injecteur de carburant selon la revendication 2,
    caractérisé en ce que
    l'au moins un alésage d'écoulement (48) est disposé suivant un angle oblique (α) par rapport à l'axe longitudinal (22), de telle sorte que la surface étanchéité (38) présente, par rapport à l'axe longitudinal (22), une plus grande distance à la chambre de commande (25) que la sortie (52).
  4. Injecteur de carburant selon l'une des revendications 1 à 3,
    caractérisé en ce que
    l'armature magnétique (40 ; 40a) comprend dans une région centrale un premier prolongement (68) en forme de goupille ou de douille faisant saillie en direction de la pièce de soupape (15), prolongement sur le côté frontal, tourné vers la pièce de soupape (15), duquel l'arête d'étanchéité (42) est réalisée, et en ce que le premier prolongement (68) plonge dans un renfoncement (45) de la pièce de soupape (15) lorsque l'armature magnétique (40 ; 40a) est abaissée.
  5. Injecteur de carburant selon l'une des revendications 1 à 4,
    caractérisé en ce que
    l'armature magnétique (40 ; 40a) comprend dans une région centrale un deuxième prolongement (70) en forme de goupille ou de douille faisant saillie en direction de la bobine magnétique (80), lequel prolongement plonge axialement dans une ouverture traversante (75) d'un noyau magnétique (76) avec un jeu radial faible.
  6. Injecteur de carburant selon l'une des revendications 2 à 5,
    caractérisé en ce que
    la sortie (52) de l'au moins un alésage d'écoulement (48) débouche en dessous de l'armature magnétique (40 ; 40a) sur le côté opposé à la bobine magnétique (80).
  7. Injecteur de carburant selon l'une des revendications 2 à 5,
    caractérisé en ce que
    la sortie (52) de l'au moins un alésage d'écoulement (48) débouche dans la région de l'armature magnétique (40), et en ce que l'armature magnétique (40) comprend au moins une ouverture de passage (60) qui est disposée en chevauchement avec la sortie (52).
  8. Injecteur de carburant selon l'une des revendications 1 à 7,
    caractérisé en ce que
    l'armature magnétique (40 ; 40a) comprend au moins un passage (62) au moins dans la région de chevauchement avec un côté frontal, tourné vers l'armature magnétique (40 ; 40a), de la pièce de soupape (15).
  9. Utilisation d'un injecteur de carburant (100) selon l'une des revendications 1 à 8 pour des moteurs à combustion interne à autoallumage, l'injecteur de carburant (100) étant réalisé pour fonctionner à une pression de système de plus de 2000 bars.
EP17798174.3A 2016-12-22 2017-11-06 Injecteur de carburant et utilisation de celui-ci Active EP3559438B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016225946.6A DE102016225946A1 (de) 2016-12-22 2016-12-22 Kraftstoffinjektor und dessen Verwendung
PCT/EP2017/078285 WO2018114111A1 (fr) 2016-12-22 2017-11-06 Injecteur de carburant et utilisation de celui-ci

Publications (2)

Publication Number Publication Date
EP3559438A1 EP3559438A1 (fr) 2019-10-30
EP3559438B1 true EP3559438B1 (fr) 2021-09-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP17798174.3A Active EP3559438B1 (fr) 2016-12-22 2017-11-06 Injecteur de carburant et utilisation de celui-ci

Country Status (3)

Country Link
EP (1) EP3559438B1 (fr)
DE (1) DE102016225946A1 (fr)
WO (1) WO2018114111A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10704444B2 (en) * 2018-08-21 2020-07-07 Tenneco Automotive Operating Company Inc. Injector fluid filter with upper and lower lip seal

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006021736A1 (de) * 2006-05-10 2007-11-15 Robert Bosch Gmbh Kraftstoffinjektor mit druckausgeglichenem Steuerventil
DE102007009165A1 (de) 2007-02-26 2008-08-28 Robert Bosch Gmbh Kraftstoffinjektor mit einer zusätzlichen Ablaufdrossel oder mit einer verbesserten Anordnung derselben im Steuerventil
DE102009002892A1 (de) * 2009-05-07 2010-11-11 Robert Bosch Gmbh Druckausgeglichenes Steuerventil für einen Kraftstoffinjektor
JP2013072498A (ja) * 2011-09-28 2013-04-22 Nabtesco Corp 電磁アクチュエータ

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Publication number Publication date
EP3559438A1 (fr) 2019-10-30
WO2018114111A1 (fr) 2018-06-28
DE102016225946A1 (de) 2018-06-28

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