EP2927474B1 - Dispositif d'injection de carburant et moteur diesel - Google Patents

Dispositif d'injection de carburant et moteur diesel Download PDF

Info

Publication number
EP2927474B1
EP2927474B1 EP14774505.3A EP14774505A EP2927474B1 EP 2927474 B1 EP2927474 B1 EP 2927474B1 EP 14774505 A EP14774505 A EP 14774505A EP 2927474 B1 EP2927474 B1 EP 2927474B1
Authority
EP
European Patent Office
Prior art keywords
fuel
fuel injection
fuel oil
housing
injection holes
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
EP14774505.3A
Other languages
German (de)
English (en)
Other versions
EP2927474A4 (fr
EP2927474A1 (fr
Inventor
Jun Yanagi
Nobuyuki Kunihiro
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Publication of EP2927474A1 publication Critical patent/EP2927474A1/fr
Publication of EP2927474A4 publication Critical patent/EP2927474A4/fr
Application granted granted Critical
Publication of EP2927474B1 publication Critical patent/EP2927474B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F02M61/1893—Details of valve member ends not covered by groups F02M61/1866 - F02M61/188
    • 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
    • F02M61/042—The valves being provided with fuel passages
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
    • F02M61/182—Discharge orifices being situated in different transversal planes with respect to valve member direction of movement
    • 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
    • F02M2200/16—Sealing of fuel injection apparatus not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • 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
    • 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
    • F02M63/004—Sliding valves, e.g. spool valves, i.e. whereby the closing member has a sliding movement along a seat for opening and closing

Definitions

  • the present invention relates to a fuel injection device used in internal combustion engines such as a diesel engine, and a diesel engine.
  • Fuel injection devices are provided on a cylinder head of internal combustion engines such as diesel engines, with a tip of a housing of the fuel injection device projecting into a combustion chamber. Fuel injection holes are formed in the tip of the housing, and a needle valve is installed within the housing. The needle valve is separated from a valve seating by an oil pressure of fuel oil supplied within the housing, thereby opening the valve, and fuel oil is supplied to the fuel injection holes. As a result, fuel oil is injected into the combustion chamber from the fuel injection holes. In the combustion chamber, flames are formed by ignition of fuel oil mixed with air, and the flames spread throughout the whole combustion chamber.
  • Patent Document 1 discloses a cut-off member provided on a tip of a shaft of a valve, having two cylindrical portions that fit within a central hole within an atomizer.
  • the two cylindrical members include a first cylindrical portion located on the lower side and a second cylindrical portion located on the upper side.
  • Patent Document 1 Japanese Unexamined Patent Application Publication (translation of PCT application) No. 2010-512484A
  • a ring-shaped recess is formed between the first cylindrical portion and the second cylindrical portion.
  • the ring-shaped recess is in communication with the two groups of nozzle holes. Therefore, even when the valve is closed, fuel oil accumulated in the ring-shaped recess passes through the second nozzle hole, which causes dripping due to supply of fuel oil into the combustion chamber. In other words, the volume sucked by the fuel injector is increased by forming the ring-shaped recess.
  • the present invention has been made in view of the above-described circumstances, and has an object to provide a fuel injection device and diesel engine capable of reducing the amount of fuel oil supplied to the combustion chamber when the valve is closed.
  • a fuel injection device includes: a housing having a fuel supply path formed in an interior of the housing, and fuel injection holes formed on a tip of the housing; a needle valve that is disposed within the housing, and opens or closes the fuel supply path in accordance with a fuel oil pressure; a spool valve that is provided on a tip of the needle valve, and slides with an external peripheral face of the spool valve in contact with an internal peripheral face of the housing; and a groove that is formed on the internal peripheral face of the housing in a position different from the fuel injection holes, and is in communication with the fuel supply path, a fuel oil introduction space through which fuel oil flows being formed in the spool valve, upon the fuel supply path being opened, the fuel oil introduction space being in communication with the groove, and, the fuel oil introduction space moving to a position at which the fuel oil introduction space is in communication with the fuel injection holes, and upon the fuel supply path being closed, the external peripheral face of the spool valve facing the fuel injection holes, and the fuel oil introduction space moving
  • the upper external peripheral face of the spool valve is always in contact with the internal peripheral face of the housing during opening and closing operation of the fuel supply path.
  • the external peripheral face of the spool valve when the external peripheral face of the spool valve slides in contact with the internal peripheral face of the housing, during opening and closing operation of the fuel supply path, the external peripheral face of the spool valve located above the fuel oil introduction space is always in contact with the internal peripheral face of the housing. Also, when the fuel supply path is opened, fuel oil is introduced into the fuel oil introduction space of the spool valve from the groove. As a result, even if the fuel oil introduction space is formed in the shape of a recess in the spool valve, the external peripheral face of the needle valve above the fuel oil introduction space is supported by the housing, so the behavior of the needle valve is stabilized. Also, the external peripheral face of the spool valve is always in contact with the internal peripheral face of the housing, so it is difficult for damage to occur due to repeated contact and non-contact.
  • the fuel oil introduction space may be formed in a ring shape in the spool valve.
  • the fuel injection holes are provided in a position in the housing that is different from that of the groove, and, the fuel oil introduction space is formed in a ring shape on the outer periphery of the spool valve, so the flow path resistance of fuel oil from the groove via the fuel oil introduction space until it is injected from the injection holes is constant regardless of the rotational position of the needle valve. In other words, even if the needle valve has rotated about the axial line, the flow path resistance of fuel oil does not change, so it is possible to stably inject fuel oil.
  • a reference example can be considered in which the groove is not formed in the housing, but for example a groove is formed along the axial direction on a shaft of the needle valve, and a through hole is formed in the axial direction in the spool valve, thereby supplying fuel to the fuel oil introduction space.
  • the position that fuel oil is introduced to the fuel oil introduction space becomes closer to or distant from the fuel injection holes depending on the rotational position of the needle valve, so the flow path resistance of fuel oil until it is injected from the fuel injection holes varies.
  • the position at which fuel oil is introduced to the fuel oil introduction space (the position of the groove formed in the housing) and the position of the fuel injection holes are constant, so the flow path resistance of fuel oil does not vary.
  • the fuel injection holes may be provided as upper fuel injection holes and lower fuel injection holes in the axial direction of the housing, a fuel supply path that supplies fuel to a lower space of the spool valve is formed within the spool valve, and when the fuel supply path is opened, the fuel oil introduction space is in communication with the groove, and, the fuel oil introduction space moves to a position that is in communication with the upper fuel injection holes, and the lower space of the spool valves is in communication with the groove, and, the lower space of the spool valve may be in communication with the lower fuel injection holes.
  • a plurality of the grooves may be formed on the internal peripheral face of the housing, and the plurality of grooves is provided at equal spacing on the internal peripheral face of the housing.
  • the groove and the fuel injection hole may be formed providing a spacing therebetween of not less than the diameter of the fuel injection hole.
  • the diesel engine according to a second aspect of the present invention includes the fuel injection device as described above provided in a cylinder head.
  • the fuel injection device is provided in the cylinder head of the diesel engine, and when the fuel supply path is opened, the fuel injection device injects fuel oil introduced from the groove from the fuel injection holes via the fuel oil introduction space of the spool valve.
  • the external peripheral face of the needle valve faces the fuel injection holes, and the fuel oil introduction space is not in communication with the fuel injection holes, so fuel is not supplied to the injection holes from the fuel introduction space. Therefore, when the needle valve is closed, this configuration prevents dripping of fuel oil accumulated in the fuel oil introduction space from supplying to the combustion chamber through the fuel injection holes.
  • the fuel injection device 10 is applied to, for example, an internal combustion engine such as a large two cycle marine diesel engine.
  • the fuel injection device 10 includes a cylindrical housing 14 that is installed on a cylinder head 12 of the internal combustion engine.
  • FIG. 1 is a schematic view and vertical cross-sectional view of the fuel injection device according to the first embodiment of the present invention, illustrating the state when a needle valve 26 is closed.
  • FIG. 2 illustrates the state when the needle valve 26 is closed.
  • an oil pump 38 is connected to a cylinder 34 via an oil path 36.
  • the cylinder 34 is connected to a first end of an oil path 32, and a second end of the oil path 32 is connected to a fuel supply path 18 formed in the housing 14.
  • a piston 40 that is made to reciprocate by a cam 42 is provided within the cylinder 34. Fuel oil is supplied from the oil pump 38 to the cylinder 34, and fuel oil within the cylinder 34 is supplied to the fuel supply path 18 by the rising of the piston 40.
  • a plurality of fuel injection holes is provided in a tip portion 14a of the housing 14.
  • the tip portion 14a projects from a bottom surface 12a of a cylinder head 12 into a combustion chamber 11.
  • a cylindrical central hole 21 is formed along the axial line in the housing 14, and the needle valve 26 is housed within the central hole 21.
  • the central hole 21 in the housing 14 is cylindrical, but this is not a limitation, and for example it may be a rectangular cylindrical shape.
  • the fuel supply path 18 is formed from the top portion toward the bottom portion of the housing 14, and the fuel supply path 18 is in communication with a chamber 20.
  • a valve seating 22 is formed on the bottom surface of the chamber 20, and a fuel supply path 24 is formed on the inside of the valve seating 22.
  • a coil spring 30 is installed above the needle valve 26, and the elastic force of the coil spring 30 is applied to the top surface of the needle valve 26. In this way, when fuel oil is not supplied to the fuel supply path 18, a conical surface 28 of the needle valve 26 is pressed against the valve seating 22, and the fuel supply path 24 provided below the chamber 20 is closed. The needle valve 26 moves upwards in accordance with the oil pressure of fuel oil supplied to the fuel supply path 18, and the fuel supply path 18 and the fuel supply path 24 are linked.
  • a spool valve 44 is formed at the tip of the needle valve 26.
  • a fuel supply hole 440 is provided on the axial line of the spool valve 44.
  • the fuel supply hole 440 communicates with the fuel supply path 24 and a space 25 formed below the spool valve 44.
  • the spool valve 44 includes an upper large diameter portion 442 located on the upper side and a lower large diameter portion 444 located on the lower side and separated from the upper large diameter portion 442.
  • a small diameter portion 446 is formed between the upper large diameter portion 442 and the lower large diameter portion 444.
  • the upper large diameter portion 442, the lower large diameter portion 444, and the small diameter portion 446 have, for example, a cylindrical shape.
  • the upper large diameter portion 442, the lower large diameter portion 444, and the small diameter portion 446 may have a rectangular cylindrical shape to suit the shape of the central hole 21 within the housing 14.
  • the upper large diameter portion 442 and the lower large diameter portion 444 fit within the central hole 21 of the housing 14, and slide along the internal peripheral face of the central hole 21.
  • the needle valve 26 closes the fuel supply path 24
  • the upper large diameter portion 442 closes upper fuel injection holes 16a, 16b
  • the lower large diameter portion 444 closes lower fuel injection holes 16c, 16d, as illustrated in FIGS. 1 , 3, and 4 .
  • a ring-shaped fuel oil introduction space 27 is formed at the position corresponding to the small diameter portion 446 between the upper large diameter portion 442 and the lower large diameter portion 444.
  • the fuel oil introduction space 27 is formed in a recess toward the center side from the external peripheral face of the spool valve 44, for distributing fuel oil.
  • the space 25 that is formed below the spool valve 44 faces the lower fuel injection holes 16c, 16d, so the space 25 is in communication with the fuel injection holes 16c, 16d, as illustrated in FIGS. 2 and 6 .
  • the fuel oil introduction space 27 may be ring shaped, but is not limited to a circular ring shape.
  • the four fuel injection holes 16a to 16d are disposed divided into two injection hole rows A and B, provided at different positions in the axial direction of the housing 14.
  • the upper injection hole row A is configured from the fuel injection holes 16a and 16b
  • the lower injection hole row B is configured from the fuel injection holes 16c and 16d.
  • each of the fuel injection holes 16a to 16d is formed, for example, in a radiation direction with respect to the axial line of the housing 14.
  • the number of fuel injection holes is not limited to four, for example, three may be formed in the upper injection hole row A, and three may be formed in the lower injection hole row B, and the number of fuel injection holes formed in the upper injection hole row A and the lower injection hole row B need not be the same.
  • a vertical groove 23 is formed along the axial direction on the internal peripheral face of the central hole 21 of the housing 14.
  • the vertical groove 23 is provided at a position that is different from the fuel injection holes 16a, 16b, as illustrated in FIGS. 3 and 5 .
  • the vertical groove 23 is formed with a length so that regardless of the vertical position of the needle valve 26, it is always in communication with the fuel supply path 24 and the ring-shaped fuel oil introduction space 27. In this way, fuel oil fills the fuel oil introduction space 27 even when the needle valve 26 closes the fuel supply path 24.
  • a plurality of vertical grooves 23 may be formed on the internal peripheral face of the housing 14.
  • the plurality of vertical grooves 23 is provided at equal spacing on the internal peripheral face of the housing.
  • the two vertical grooves 23 are formed in relative positions facing each other.
  • each of the vertical grooves 23 is provided at equal spacing.
  • the needle valve 26 is subjected to a reaction force from fuel oil that is pressurized and introduced into the vertical grooves 23.
  • the distance L between the vertical grooves 23 and each of the fuel injection holes 16a, 16b is formed so that a spacing of the diameter d of the injection hole or greater is maintained. In this way, it is possible to reduce the potential for fuel oil, in the portion between the vertical groove 23 and the fuel infection holes 16a, 16b, to flow out from the fuel infection holes 16a, 16b through the gap between the internal peripheral face of the housing 14 and the external peripheral face of the spool valve 44, when the needle valve 26 is closed.
  • the needle valve 26 When fuel oil is not supplied from the oil path 32 to the fuel supply path 18, the needle valve 26 is seated on the valve seating 22 and closes the fuel supply path 18.
  • the needle valve 26 When fuel oil is supplied from the oil path 32 to the fuel supply path 18, the needle valve 26 is raised against the elastic force of the coil spring 30 in accordance with the oil pressure of fuel oil, and the fuel supply path 24 is opened. In other words, the needle valve 26 does not rise until the oil pressure of fuel oil is equal to or greater than a certain oil pressure, and the fuel supply path 24 is closed.
  • fuel oil arrives at the lower space 25 through the fuel supply path 18, the fuel supply path 24, and the fuel supply hole 440. Also, fuel oil arrives at the fuel oil introduction space 27 via a different path, namely, through the fuel supply path 18, the fuel supply path 24, and the vertical groove 23.
  • the spool valve 44 that is integral with the needle valve 26 is also raised and lowered in accordance with the raising and lowering of the needle valve 26.
  • the injection hole row A and the injection hole row B are opened and closed in accordance with the position of the spool valve 44.
  • the fuel oil introduction space 27 is in communication with the vertical groove 23, and, the fuel oil introduction space 27 is moved to a position at which the fuel oil introduction space 27 is in communication with the fuel injection holes 16a, 16b of the injection hole row A.
  • the lower large diameter portion 444 of the spool valve 44 opens the fuel injection holes 16c, 16d of the injection hole row B. Therefore, when the spool valve 44 is raised, all of the fuel injection holes 16a to 16d of the injection hole row A and the injection hole row B are opened.
  • the needle valve 26 is lowered onto the valve seating 22, and the fuel supply path 24 is closed.
  • the needle valve 26 is seated on the valve seating 22, all of the fuel injection holes 16a to 16d of the injection hole row A and the injection hole row B are closed by the external peripheral face of the spool valve 44, in other words, the upper large diameter portion 442 or the lower large diameter portion 444.
  • the fuel oil introduction space 27 moves to a position at which the fuel oil introduction space 27 is not in communication with the fuel injection holes 16a to 16d.
  • the external peripheral face of the needle valve 26 (the upper large diameter portion 442 and the lower large diameter portion 444) faces the fuel injection holes 16a to 16d, and the fuel oil introduction space 27 is not in communication with the fuel injection holes 16a to 16d, so fuel from the fuel introduction space is not supplied to the fuel injection holes 16a to 16d. Therefore, when the needle valve 26 is closed, this configuration prevents dripping of fuel oil accumulated in the fuel oil introduction space 27 from supplying to the combustion chamber through the fuel injection holes 16a to 16d.
  • the fuel oil introduction space 27 is formed in a ring shape on the outer periphery of the spool valve 44 as illustrated in FIG. 5 .
  • the fuel injection holes 16a to 16d, in the housing 14, are provided in positions that are different from the vertical groove 23, and, the fuel oil introduction space 27 is formed in a ring shape on the outer periphery of the spool valve 44, so the flow path resistance of fuel oil flowing from the vertical groove 23 via the fuel oil introduction space 27 until it is injected from the injection holes is constant regardless of the rotational position of the needle valve 26. In other words, even if the needle valve 26 has rotated about the axial line, the flow path resistance of fuel oil does not change, so it is possible to stably inject fuel oil.
  • a reference example can be considered in which the vertical groove 23 is not formed on the housing 14, but for example a groove is formed along the axial direction on the shaft of the needle valve 26, and a through hole is formed in the axial direction in the spool valve 44, to supply fuel to the fuel oil introduction space 27.
  • the position at which fuel oil is introduced to the fuel oil introduction space 27 becomes closer to or distant from the fuel injection holes 16a to 16d depending on the rotational position of the needle valve 26, so the flow path resistance until fuel oil is injected from the fuel injection holes 16a to 16d varies.
  • the position at which fuel oil is introduced to the fuel oil introduction space 27 (the position of the vertical groove 23 formed in the housing 14) and the position of the fuel injection holes 16a to 16d are constant, so the flow path resistance of fuel oil does not vary.
  • the vertical groove in the present embodiment differs from that of the first embodiment, and the rest of the configuration is the same, so duplication of description is omitted.
  • the vertical groove 23 is not in communication with the lower space 25 of the spool valve 44.
  • the fuel oil path to the fuel injection holes 16a, 16b of the injection hole row A and the fuel oil path to the fuel injection holes 16c, 16d of the lower injection hole row B are separated. Therefore, the flow path resistance of the two are different.
  • a vertical groove 29 is formed to a position at which the vertical groove 29 is in communication with the lower space 25 of the spool valve 44 even when the needle valve 26 is opened.
  • the fuel oil introduction space 27 and the lower space 25 of the spool valve are in communication via the vertical groove 29 formed on the internal peripheral face of the housing 14, so the flow path resistance and the injection pressure can be maintained uniform for fuel oil injected from the upper fuel injection holes 16a, 16b and the lower fuel injection holes 16c, 16d.

Landscapes

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

Claims (7)

  1. Dispositif d'injection de carburant (10), comprenant :
    un carter (14) comportant un passage d'alimentation en carburant (18) formé dans un intérieur du carter et des trous d'injection de carburant (16) formés sur une pointe (14a) du carter ;
    une soupape à pointeau (26) qui est disposée à l'intérieur du carter, et qui ouvre ou ferme le passage d'alimentation en carburant en fonction d'une pression de combustible ;
    un distributeur à tiroir cylindrique (44) qui est prévu sur une pointe de la soupape à pointeau (26), et qui coulisse tandis qu'une face périphérique externe de la soupape à pointeau est en contact avec une face périphérique interne (21) du carter ; et
    une gorge (23) qui est formée sur la face périphérique interne du carter en une position différente de celles des trous d'injection de carburant, et qui est en communication avec le passage d'alimentation en carburant ;
    un espace d'introduction de combustible (27) au travers duquel un combustible s'écoule étant formé dans le distributeur à tiroir cylindrique ;
    suite à l'ouverture du passage d'alimentation en carburant, l'espace d'introduction de combustible est en communication avec la gorge, et l'espace d'introduction de combustible se déplace jusqu'à une position à laquelle l'espace d'introduction de combustible est en communication avec les trous d'injection de carburant ; et
    suite à la fermeture du passage d'alimentation en carburant, la face périphérique externe du distributeur à tiroir cylindrique fait face aux trous d'injection de carburant, et l'espace d'introduction de combustible se déplace jusqu'à une position à laquelle l'espace d'introduction de combustible n'est pas en communication avec les trous d'injection de carburant.
  2. Dispositif d'injection de carburant selon la revendication 1, dans lequel la face périphérique externe supérieure du distributeur à tiroir cylindrique est toujours en contact avec la face périphérique interne du carter pendant une opération d'ouverture et de fermeture du passage d'alimentation en carburant.
  3. Dispositif d'injection de carburant selon la revendication 1 ou 2, dans lequel l'espace d'introduction de combustible est formé selon une forme de bague sur le distributeur à tiroir cylindrique.
  4. Dispositif d'injection de carburant selon l'une quelconque des revendications 1 à 3, dans lequel les trous d'injection de carburant sont constitués en tant que trous d'injection de carburant supérieurs et en tant que trous d'injection de carburant inférieurs dans une direction axiale du carter,
    un passage d'alimentation en carburant qui alimente du carburant jusqu'à un espace au dessous du distributeur à tiroir cylindrique est formé à l'intérieur du distributeur à tiroir cylindrique ; et
    suite à l'ouverture du passage d'alimentation en carburant, l'espace d'introduction de combustible est en communication avec la gorge, et l'espace d'introduction de combustible se déplace jusqu'à la position à laquelle l'espace d'introduction de combustible est en communication avec les trous d'injection de carburant supérieurs, et l'espace au dessous du distributeur à tiroir cylindrique est en communication avec la gorge, et l'espace au dessous du distributeur à tiroir cylindrique est en communication avec les trous d'injection de carburant inférieurs.
  5. Dispositif d'injection de carburant selon l'une quelconque des revendications 1 à 4, dans lequel les gorges de la pluralité de gorges sont formées sur la face périphérique interne du carter, et les gorges de la pluralité de gorges sont ménagées selon des espacements égaux sur la face périphérique interne du carter.
  6. Dispositif d'injection de carburant selon l'une quelconque des revendications 1 à 5, dans lequel la gorge et le trou d'injection de carburant sont formés en prévoyant un espacement entre non inférieur à un diamètre du trou d'injection de carburant.
  7. Moteur diesel, comprenant le dispositif d'injection de carburant décrit selon l'une quelconque des revendications 1 à 6 installé sur une culasse.
EP14774505.3A 2013-03-29 2014-03-26 Dispositif d'injection de carburant et moteur diesel Active EP2927474B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013074209A JP5955258B2 (ja) 2013-03-29 2013-03-29 燃料噴射装置及びディーゼル機関
PCT/JP2014/058446 WO2014157297A1 (fr) 2013-03-29 2014-03-26 Dispositif d'injection de carburant et moteur diesel

Publications (3)

Publication Number Publication Date
EP2927474A1 EP2927474A1 (fr) 2015-10-07
EP2927474A4 EP2927474A4 (fr) 2016-01-20
EP2927474B1 true EP2927474B1 (fr) 2016-12-28

Family

ID=51624262

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14774505.3A Active EP2927474B1 (fr) 2013-03-29 2014-03-26 Dispositif d'injection de carburant et moteur diesel

Country Status (5)

Country Link
EP (1) EP2927474B1 (fr)
JP (1) JP5955258B2 (fr)
KR (1) KR101726527B1 (fr)
CN (1) CN104903569B (fr)
WO (1) WO2014157297A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105508310B (zh) * 2015-12-08 2017-10-10 中国航空工业集团公司金城南京机电液压工程研究中心 一种双端吸油航空燃油射流泵
KR101638815B1 (ko) * 2016-01-07 2016-07-25 한빛정공(주) 4 행정용 인젝션 밸브
JP6668079B2 (ja) * 2016-01-12 2020-03-18 日立オートモティブシステムズ株式会社 燃料噴射装置
US11293392B2 (en) * 2019-02-20 2022-04-05 Ford Global Technologies, Llc Methods and systems for a fuel injector
CN113833592B (zh) * 2021-09-30 2023-03-24 潍柴动力股份有限公司 一种喷射阀组件、发动机及车辆
DK181318B1 (en) * 2022-02-18 2023-08-10 Man Energy Solutions Filial Af Man Energy Solutions Se Tyskland A fuel valve for a large turbocharged two-stroke uniflow crosshead internal combustion engine
CN115163366B (zh) * 2022-06-29 2024-06-14 浙江吉利控股集团有限公司 一种喷油器密封结构、甲醇发动机喷油器和车辆

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002242798A (ja) * 2001-02-16 2002-08-28 Mitsubishi Heavy Ind Ltd ディーゼル機関用燃料噴射弁
JP2006066885A (ja) * 2004-07-29 2006-03-09 Denso Corp 燃料噴射弁
KR101043745B1 (ko) * 2006-12-15 2011-06-22 맨 디젤 앤드 터보 필리얼 아프 맨 디젤 앤드 터보 에스이 티스크랜드 내연기관용 연료분사기
DK2386745T3 (da) * 2010-05-11 2013-03-04 Waertsilae Switzerland Ltd Brændstofindsprøjtningsindretning til motorer med indvendig forbrænding
KR101148683B1 (ko) * 2010-06-07 2012-05-21 현대중공업 주식회사 디젤엔진과 가스엔진용 하이브리드형 노즐을 구비한 이중 연료분사밸브장치
DK2405127T3 (da) * 2010-07-07 2013-04-22 Waertsilae Switzerland Ltd Brændstofindsprøjtningsindretning til motorer med indvendig forbrænding
JP5798898B2 (ja) * 2011-11-24 2015-10-21 三菱重工業株式会社 燃料噴射装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
CN104903569B (zh) 2017-09-01
JP5955258B2 (ja) 2016-07-20
KR101726527B1 (ko) 2017-04-12
CN104903569A (zh) 2015-09-09
JP2014199021A (ja) 2014-10-23
KR20150092326A (ko) 2015-08-12
WO2014157297A1 (fr) 2014-10-02
EP2927474A4 (fr) 2016-01-20
EP2927474A1 (fr) 2015-10-07

Similar Documents

Publication Publication Date Title
EP2927474B1 (fr) Dispositif d'injection de carburant et moteur diesel
US10975820B2 (en) Fuel injection valve
US10208711B2 (en) Gas injector including an outwardly opening valve closure element
KR101144482B1 (ko) 엔진의 직분사 인젝터
US9810179B2 (en) Gas injector for the direct injection of gaseous fuel into a combustion chamber
WO2014186892A1 (fr) Injecteur de carburant
US20170292483A1 (en) Fuel injection valve
US20160076499A1 (en) Fuel injection valve
US20120012681A1 (en) Fuel injector having balanced and guided plunger
KR20170012365A (ko) 연료 인젝터용 노즐 조립체 및 연료 인젝터
CN111226033A (zh) 用于配量液态和气态燃料的喷射器
EP2386745A1 (fr) Injecteur de carburant pour moteurs à combustion interne
JP6160562B2 (ja) 燃料噴射弁
EP2918818A1 (fr) Injecteur à carburant
JP2006510846A (ja) スライディング弁
KR102260757B1 (ko) 인젝터의 니들-볼 고정구조
CN110566387B (zh) 用于气态和液态燃料的喷射器
EP3165759A8 (fr) Procédé d'injection de carburant dans une chambre de combustion d'un moteur à combustion interne, atomiseur d'un electro-injecteur de carburant pour mettre un tel procédé d'injection et procédé de production dudit atomiseur
JP6348006B2 (ja) 燃料噴射ノズル
KR102048096B1 (ko) 이원연료엔진용 연료분사밸브
EP2487361A1 (fr) Aiguille d'injecteur pour injecteur de combustible et injecteur de combustible
US10030620B2 (en) Fuel injection valve
WO2015124340A1 (fr) Injecteur de carburant
GB2564664A (en) Seat Body for a Fluid Injection Valve and Fluid Injection Valve
JP6348372B2 (ja) 燃料噴射弁

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20150703

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

RA4 Supplementary search report drawn up and despatched (corrected)

Effective date: 20151218

RIC1 Information provided on ipc code assigned before grant

Ipc: F02M 63/00 20060101ALI20151214BHEP

Ipc: F02M 61/18 20060101ALI20151214BHEP

Ipc: F02M 61/10 20060101AFI20151214BHEP

Ipc: F02M 61/04 20060101ALI20151214BHEP

Ipc: F02M 61/12 20060101ALI20151214BHEP

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20160719

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 857533

Country of ref document: AT

Kind code of ref document: T

Effective date: 20170115

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602014005894

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170328

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170329

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20161228

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 857533

Country of ref document: AT

Kind code of ref document: T

Effective date: 20161228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170428

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170428

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170328

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602014005894

Country of ref document: DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602014005894

Country of ref document: DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

26N No opposition filed

Effective date: 20170929

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20171130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171003

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170331

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170326

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170331

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170326

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170326

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20180326

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180326

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20140326

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161228

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20240212

Year of fee payment: 11