EP1939440B1 - Soupape d'injection de combustible - Google Patents

Soupape d'injection de combustible Download PDF

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Publication number
EP1939440B1
EP1939440B1 EP20070122092 EP07122092A EP1939440B1 EP 1939440 B1 EP1939440 B1 EP 1939440B1 EP 20070122092 EP20070122092 EP 20070122092 EP 07122092 A EP07122092 A EP 07122092A EP 1939440 B1 EP1939440 B1 EP 1939440B1
Authority
EP
European Patent Office
Prior art keywords
valve
outlet
fuel injection
magnet coil
solenoid valve
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.)
Not-in-force
Application number
EP20070122092
Other languages
German (de)
English (en)
Other versions
EP1939440A2 (fr
EP1939440A3 (fr
Inventor
Gert Wolf
Matthias Burger
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 EP1939440A2 publication Critical patent/EP1939440A2/fr
Publication of EP1939440A3 publication Critical patent/EP1939440A3/fr
Application granted granted Critical
Publication of EP1939440B1 publication Critical patent/EP1939440B1/fr
Not-in-force 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
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
    • F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
    • F02M45/08—Injectors peculiar thereto
    • F02M45/086—Having more than one injection-valve controlling discharge orifices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • 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
    • F02M63/0024—Valves characterised by the valve actuating means electrical, e.g. using solenoid in combination with permanent magnet
    • 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
    • F02M63/0045—Three-way valves
    • 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
    • F02M63/0059—Arrangements of valve actuators
    • F02M63/0061—Single actuator acting on two or more 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
    • F02M63/0059—Arrangements of valve actuators
    • F02M63/0063—Two or more actuators acting on a single valve body
    • 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
    • F02M2200/46—Valves, e.g. injectors, with concentric valve bodies

Definitions

  • the invention relates to a fuel injection valve for fuel injection systems of internal combustion engines. Specifically, the invention relates to an injector for fuel injection systems of air-compressing, self-igniting internal combustion engines.
  • EP 1 724 462 discloses a valve according to the preamble of independent claim 1.
  • a fuel injector for direct injection of diesel fuel into an internal combustion engine has a valve housing consisting of several housing parts.
  • a fuel inlet nozzle is provided, wherein within the valve housing, a channel for the passage of fuel is formed, which opens into a pressure chamber, which is provided in Abspritzides below a servo control circuit of the fuel injection valve. From this channel branches off at the height of the Hubüber GmbHs adopted from an inlet throttle, is passed over the fuel from the channel into a control chamber of the hydraulic coupler.
  • an outlet throttle is provided, which connects the control chamber with a 2/2-way valve. If an injection takes place, is opens the switching valve for a short time, so that the pressure in the control chamber drops, resulting in the spraying of fuel from the pressure chamber into a chamber of the internal combustion engine.
  • the fuel injection valve according to the invention with the features of claim 1 has the advantage that the solenoid valve has at least three different positions, so that more extensive shaping of the injection curve are possible, with a relatively inexpensive design can be achieved.
  • the solenoid valve has a first energizable solenoid coil, a second energizable solenoid coil and a permanently magnetized armature provided between the magnet coils.
  • the two magnetic coils are energized so that in each case a magnetic repulsion of the armature is achieved.
  • the armature is held reliably in the center position, wherein the magnetic forces compensate for any flow forces that are transmitted via a valve needle of the solenoid valve to the armature compensate.
  • the permanently magnetized armature has an annular permanent magnet with two concentrically arranged poles spaced apart in the radial direction.
  • a Curie temperature (depolarization temperature) of the permanent magnets is above 100 ° C.
  • the Curie temperature indicates from which temperature the magnet loses its magnetization.
  • the Curie temperature is above 100 ° C, it is ensured that no demagnetization of the permanent magnets occurs during normal operation of the fuel injection valve.
  • the servo control circuit has a control chamber, that an inlet is provided with an inlet throttle, which opens into the control chamber, that the first outlet and the second outlet are connected to the control chamber, that the first outlet has a throttle and that second sequence has a throttle.
  • the servo control circuit for driving a first valve needle part has a first control chamber, which is connected to the first outlet, and for driving a second valve needle part has a second control chamber, which is connected to the second outlet, and in that a first inlet with a Inlet restrictor, which opens into the first control chamber, and a second inlet with an inlet throttle, which opens into the second control chamber, are provided.
  • a differentiated control of the valve needle parts on the pressures in the control rooms is possible.
  • first valve needle part to cooperate with a valve seat surface to form a sealing seat in order to control the spraying of fuel via at least one nozzle opening
  • second valve needle part to cooperate with the valve seat surface to form a sealing seat in order to spray off fuel via at least one control further nozzle opening.
  • a remanence of the permanent magnets is in each case above 0.3 T.
  • An embodiment of the permanent magnets of neodymium and / or iron and / or boron has the advantage that due to a relatively high energy density, a very small volume of construction is possible and / or large magnetic forces or short switching times possible are.
  • a seat diameter of a sealing seat of the solenoid valve which serves to block the connection between the first outlet and the second outlet with the return in the first position, is smaller than a needle diameter of a valve needle of the solenoid valve.
  • the needle diameter of the valve needle of the solenoid valve is smaller than a seat diameter of another sealing seat, which serves to block the second sequence in the third position.
  • the valve needle of the solenoid valve keeps itself in the other end position by itself in the seat.
  • the solenoid valve may be configured so that the valve needle of the solenoid valve automatically stops in the respective seat in both end positions. Only to hold the valve needle of the solenoid valve in a middle position then a permanent energization of the solenoid valve is required.
  • Fig. 1 shows a first embodiment of a fuel injection valve 1 of the invention in a schematic, axial sectional view.
  • the fuel injection valve 1 can serve in particular as an injector for fuel injection systems of air-compressing, self-igniting internal combustion engines.
  • the fuel injection valve 1 is suitable for commercial vehicles or passenger cars.
  • a preferred use of the fuel injection valve 1 is for a fuel injection system with a common rail, the diesel fuel under high pressure leads to a plurality of fuel injection valves 1.
  • the fuel injection valve 1 according to the invention is also suitable for other applications.
  • the fuel injection valve 1 has a multi-part valve housing 2, which is suitably connected to a nozzle body 3. On the nozzle body 3, a valve seat surface 4 is formed, which cooperates with a valve closing body 5 to a sealing seat.
  • the valve closing body 5 is integrally formed with a valve needle 6, which is provided in a fuel chamber 7 of the nozzle body 3.
  • the fuel injection valve 1 is connected via a high pressure line 8 to a high pressure pump 9, wherein the connection can be made indirectly via a common rail.
  • the high-pressure line 8 has a branch, so that the high-pressure line 8 opens directly into the fuel chamber 7.
  • an inlet throttle 10 is provided, via which the high-pressure line 8 opens into a control chamber 11.
  • the control chamber 11 is bounded by the nozzle body 3 or a throttle plate connected to the nozzle body 3, a control chamber sleeve 12 and a piston section 13 of the valve needle 6.
  • the control chamber sleeve 12 is pressed by a spring element 14 against the nozzle body 3 and the throttle plate.
  • pressure results in a resultant force on the valve needle 6, which causes an opening or closing of the valve closing body 5, so that the sealing seat formed between the valve seat surface 4 and the valve closing body 5 is opened or closed, wherein In the open state, fuel can be sprayed off via nozzle openings 15 from the fuel chamber 7 into a combustion chamber of the internal combustion engine.
  • the fuel injection valve 1 also has a solenoid valve 20 which is provided inside the valve housing 2.
  • the solenoid valve 20 has a valve needle 21.
  • the solenoid valve 20 has a valve closing body 22 and an armature 23.
  • the valve closing body 22 is arranged at one end of the valve needle 21 and the armature 23 is arranged in the region of another end of the valve needle 21.
  • the armature 23 is permanently magnetized and accordingly has at least one permanently magnetic material, for example a ferrite material or neodymium and / or iron and / or boron.
  • the magnetic polarization of the armature 23 is in the Fig. 1 represented by "N" for North Pole and "S" for South Pole.
  • Of the Anchor 23 is arranged in an armature space 24 of the nozzle body 3, so that a certain adjustment movement of the armature 23 and thus an adjustment of the valve needle 21 of the solenoid valve 20 is made possible.
  • the armature 23 connected to the valve needle 21 is arranged between a first magnet coil 25 and a second magnet coil 26 of the solenoid valve 20.
  • the magnetic coils 25, 26 have ferromagnetic metal rings 27, 28, each with a U-profile. Within the metal rings 27, 28 are wire coils 29, 30 are provided, which are energized independently of each other.
  • the first magnetic coil 25 is energized so that a magnetic repulsion of the armature 23 of the first magnetic coil 25 is reached.
  • the second magnetic coil 26 is energized so that a magnetic repulsion of the armature 23 of the second magnetic coil 26 can be achieved.
  • the first magnet coil 25 and / or the second magnet coil 26 can also each be energized in an opposite direction in order to achieve an attraction of the armature 23 to the first magnet coil 25 and the second magnet coil 26.
  • the solenoid valve 20 is at least designed so that in each case a repulsion of the armature 23 of the first solenoid coil 25 and the second solenoid coil 26 by corresponding energization of the magnetic coils 25, 26 can be achieved.
  • the switching behavior of the solenoid valve 20, in particular the switching speed can be additionally influenced.
  • the solenoid valve 20 has a control valve chamber 31 which is connectable via a return 32 to a tank or the like.
  • first position of the solenoid valve 20 is a means of the Closed valve seat 22 formed sealing seat 33 closed, so that the connection between the control valve chamber 31 and the return line 32 is locked.
  • the control chamber 11 is connected to the control valve chamber 31 by means of a first outlet 34 and a second outlet 35.
  • the first outlet 34 has a throttle 36 and the outlet 35 has a throttle 37.
  • the throttles 36, 37 thus represent with respect to the control chamber 11 drain throttles.
  • the processes 34, 35 open into the control valve chamber 31, wherein in the in the Fig.
  • the solenoid valve 20 may be placed in a second position by energizing both the first solenoid coil 25 and the second solenoid coil 26 so that repulsion of the armature 23 both with respect to the first solenoid coil 25 and with respect to the second solenoid coil 26 is reached.
  • the armature 23 is thus at least substantially in the middle between the two magnetic coils 25, 26, since there cancel the acting on the armature 23, repulsive magnetic forces of the magnetic coils 25, 26 in approximately.
  • a resulting restoring force is generated on the armature 23, which increases, for example, exponentially with the adjustment of the central position.
  • the sealing seat 33 is opened, so that a connection between the control valve chamber 31 and the return 32 consists.
  • both the first drain 34 and the second drain 35 are connected to the return 32 via the control valve chamber 31.
  • flow forces acting on the valve closing body 22 are compensated by the restoring force generated during an adjustment of the valve closing body 22 from the second position, resulting from the magnetic fields of the two magnetic coils 25, 26.
  • the armature 23 and thus the valve needle 21 and the valve closing body 22 is held at least substantially in the second position.
  • the resulting throttling effect is smaller than each individual throttling action of the throttles 36, 37, since fuel from the control chamber 11 flows via the two outlets 34, 35 into the control valve chamber 31 to the return 32.
  • a relatively fast opening of the valve needle 6 can be achieved, so that a rapid increase in the amount of fuel discharged per unit time via the nozzle openings 15 is achieved.
  • the solenoid valve 20 also has a third position in which the valve closing body 22 closes the second outlet 35 by closing a sealing seat 38. In this third position, there is thus no connection between the second outlet 35 and the control valve chamber 31, while the first outlet 34 is connected to the control valve chamber 31 and at the same time there is an open connection between the control valve chamber 31 and the return 32.
  • the entire throttle effect with respect to the processes 34, 35 given solely by the throttle 36. Therefore, a relatively large ratio of the total throttle effect of the drains 34, 35, which is equal to the effect of the drain throttle 36, is achieved with respect to the inlet throttle 10.
  • a seat diameter of the sealing seat 33 of the solenoid valve 20, which serves to block the connection between the first drain 34 and the second drain 35 with the return 32 in the first position, is smaller than a needle diameter of the valve needle 21 of the solenoid valve 20.
  • the control valve chamber 31 has High pressure while the return 32 has low pressure. Thus, the valve needle 21 keeps itself in the sealing seat 33 without further energization of the solenoid valve.
  • the needle diameter of the valve needle 21 of the solenoid valve 20 is smaller than a seat diameter of the other sealing seat, which serves to lock the second drain 35 in the third position.
  • valve needle 21 in both end positions an automatic hold the valve needle 21 can be achieved in the respective sealing seat, so that in each case a hydraulic fixation is achieved.
  • the switching of the solenoid valve 20 in the first position, which in the Fig. 1 can also be done by the first solenoid is energized so that an attraction of the armature 23 is reached.
  • a switching of the solenoid valve 20 in the third position can also be achieved in that the second magnetic coil 26 is energized so that a tightening of the armature 23 is reached.
  • the switching speed can be increased, for example, by energizing the first magnetic coil 25 such that a repulsion of the armature 23 is achieved while the second magnetic coil 26 is energized in the opposite direction, so that an attraction of the armature 23 is achieved by the second magnetic coil 26 to get a quick switch from the one in the Fig. 1 to reach the first position shown in the third position.
  • the inlet throttle 10, the control chamber 11, and the outlet throttles 36, 37 are part of a servo control circuit 40 of the fuel injection valve 1.
  • the in the Fig. 1 illustrated embodiment of the servo control circuit 40 represents a possibility in which the three switching states of the solenoid valve 20 is used in an advantageous manner for varying the A / Z ratio.
  • the solenoid valve 20 may also be combined with differently designed servo control circuits 40.
  • the solenoid valve 20 controls by means of the servo control circuit 40, a fuel quantity which can be sprayed through the nozzle openings 50, wherein the control is influenced substantially by the choice of the respective position of the solenoid valve 20. Further possibilities of influencing arise in particular by influencing the switching speed of the solenoid valve 20.
  • Fig. 2 shows a second embodiment of a fuel injection valve 1 in a simplified, schematic sectional view.
  • the valve needle 6 has a first valve needle part 41 and a second valve needle part 42.
  • the control of the first valve needle part 41 via a first control chamber 43 which is bounded by the control chamber sleeve 12, a further control chamber sleeve 44, the valve needle parts 41, 42 and a throttle plate 45.
  • the control of the second valve needle part 42 via a second control chamber 46, which is bounded by the further control chamber sleeve 44, the second valve needle part 42 and the throttle plate 45.
  • a plurality of throttles 36, 37, 47, 48 are formed, namely the inlet throttles 47, 48 and the outlet throttles 36, 37.
  • the inlet throttle 47 of a first inlet 51 opens into the first control chamber 43.
  • Die The inlet throttle 48 of a second inlet 52 opens into the second control chamber 46.
  • the outlet throttle 36 is part of the first outlet 34, which connects the first control chamber 43 to the control valve chamber 31.
  • the outlet throttle 37 is part of the second outlet 35, which connects the second control chamber 46 with the control valve chamber 31.
  • spring elements 14, 49 are provided, which act on the control chamber sleeves 12, 44 against the throttle plate 45 and the valve needle parts 41, 42 in the unpressurized state in the in the Fig. 2 Adjust illustrated starting position, in which the fuel injection valve 1 is closed.
  • the inlet throttle 47 is part of the first inlet 51, which leads from the inlet 8 into the first control chamber 43. Furthermore, the inlet throttle 48 is part of the second inlet 52, which leads from the inlet 8 into the second control chamber 46.
  • the first inlet 51 opens into the first control chamber 43 and the second inlet 52 opens into the second control chamber 46th
  • the nozzle body 3 has the nozzle openings 15 and further nozzle openings 50.
  • the first valve needle part 41 with the valve seat surface 4 forms a sealing seat, which seals the nozzle openings 15.
  • the second valve needle part 42 with the valve seat surface 4 forms a sealing seat, which seals the other nozzle openings 50.
  • different positions of the first valve needle part 41 and the second valve needle part 42 can be achieved to respectively open or close the nozzle openings 15 and the other nozzle openings 50, so that fuel over the Nozzle openings 15 and / or the other nozzle openings 50 and / or that no fuel on the nozzle openings 15, 50 is sprayed. This can lead to a quantity of fuel sprayed off per unit of time and, on the other hand, the jet geometry of the sprayed-off fuel.
  • the servo control circuit 40 includes in this embodiment, the throttles 36, 37, 47, 48, the first control chamber 43 and the second control chamber 46th
  • the invention is not limited to the described embodiments.
  • the invention is suitable for servo-controlled injectors, as used for example in diesel direct injection.

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

Claims (14)

  1. Soupape d'injection de carburants (1), en particulier injecteur pour installations d'injection de carburant de moteurs à combustion interne à auto-allumage et compression d'air, comprenant une électrovanne (20) disposée dans un boîtier de soupape (2) et un circuit de servocommande (40), l'électrovanne (20) commandant une quantité de carburant au moyen du circuit de servocommande (40), laquelle quantité de carburant peut être injectée à travers au moins une ouverture de buse (15, 50), l'électrovanne (20), dans une première position, bloquant une connexion d'une première sortie (34) et d'une deuxième sortie (35) du circuit de servocommande (40) avec un retour (32), dans une deuxième position, libérant la première sortie (34) et la deuxième sortie (35) et dans une troisième position, libérant la première sortie (34) et bloquant la deuxième sortie (35), caractérisée en ce que l'électrovanne (20) présente une première bobine magnétique (25) pouvant être parcourue par un courant, une deuxième bobine magnétique (26) pouvant être parcourue par un courant et une armature (23) aimantée de manière permanente prévue entre les bobines magnétiques, et en ce que l'armature (23) aimantée de manière permanente présente un aimant permanent annulaire avec deux pôles disposés concentriquement et espacés dans la direction radiale.
  2. Soupape d'injection de carburant selon la revendication 1, caractérisée en ce que le circuit de servocommande (40) présente un espace de commande (11), en ce qu'une entrée (8) est pourvue d'un étranglement d'entrée (10) qui débouche dans l'espace de commande (11), en ce que la première sortie (34) et la deuxième sortie (35) sont connectées à l'espace de commande (11), en ce que la première sortie (34) présente un étranglement (36) et en ce que la deuxième sortie (35) présente un étranglement (37).
  3. Soupape d'injection de carburant selon la revendication 1, caractérisée en ce que le circuit de servocommande (40) présente, pour commander une première partie d'aiguille de soupape (41), un premier espace de commande (43) qui est connecté à la première sortie (34), et pour commander une deuxième partie d'aiguille de soupape (42), un deuxième espace de commande (46), qui est connecté à la deuxième sortie (35), et en ce qu'une première entrée (51) est pourvue d'un premier étranglement d'entrée (47) qui débouche dans le premier espace de commande (43), et qu'une deuxième entrée (52) est pourvue d'un étranglement d'entrée (48) qui débouche dans le deuxième espace de commande (46).
  4. Soupape d'injection de carburant selon la revendication 3, caractérisée en ce que la première partie d'aiguille de soupape (41) coopère avec une surface de siège de soupape (4) pour créer un siège d'étanchéité, afin de commander une injection de carburant par le biais d'au moins une ouverture de buse (15), et en ce que la deuxième partie d'aiguille de soupape (42) coopère avec la surface de siège de soupape (4) pour former un siège d'étanchéité afin de commander une injection de carburant par le biais d'au moins une ouverture de buse supplémentaire (50).
  5. Soupape d'injection de carburant selon l'une quelconque des revendications 1 à 4, caractérisée en ce qu'une température de Curie des aimants permanents est à chaque fois au-dessus de 100°C.
  6. Soupape d'injection de carburant selon l'une quelconque des revendications 1 à 5, caractérisée en ce qu'une rémanence des aimants permanents est à chaque fois supérieure à 0,3 T.
  7. Soupape d'injection de carburant selon l'une quelconque des revendications 1 à 6, caractérisée en ce que les aimants permanents sont fabriqués en un matériau qui présente du néodyme et/ou du fer et/ou du bore.
  8. Soupape d'injection de carburant selon l'une quelconque des revendications 1 à 7, caractérisée en ce que pour la commutation de l'électrovanne (20), au moins une bobine magnétique (25, 26) peut être parcourue par un courant de telle sorte qu'un repoussement magnétique de l'armature (23) par cette bobine magnétique (25, 26) puisse être obtenu.
  9. Soupape d'injection de carburant selon l'une quelconque des revendications 1 à 8, caractérisée en ce que pour la commutation de l'électrovanne (20) dans la deuxième position, la première bobine magnétique (25) et la deuxième bobine magnétique (26) peuvent être parcourues par un courant de telle sorte qu'un repoussement de l'armature (23) aussi bien par la première bobine magnétique (25) que par la deuxième bobine magnétique (26) puisse être obtenu.
  10. Soupape d'injection de carburant selon l'une quelconque des revendications 1 à 9, caractérisée en ce que pour la commutation de l'électrovanne (20) dans la première position, la première bobine magnétique (25) et la deuxième bobine magnétique (26) peuvent être parcourues par un courant de telle sorte qu'une attraction de l'armature (23) par la première bobine magnétique (25) et/ou qu'un repoussement de l'armature (23) par la deuxième bobine magnétique (26) puissent être obtenus.
  11. Soupape d'injection de carburant selon l'une quelconque des revendications 1 à 10, caractérisée en ce que pour la commutation de l'électrovanne (20) dans la troisième position, la première bobine magnétique (25) et la deuxième bobine magnétique (26) peuvent être parcourues par un courant de telle sorte qu'un repoussement de l'armature (23) par la première bobine magnétique (25) et/ou qu'une attraction de l'armature (23) par la deuxième bobine magnétique (26) puissent être obtenus.
  12. Soupape d'injection de carburant selon l'une quelconque des revendications 1 à 11, caractérisée en ce que l'électrovanne (20), dans la première position, relie la première sortie (34) à la deuxième sortie (35).
  13. Soupape d'injection de carburant selon l'une quelconque des revendications 1 à 12, caractérisée en ce qu'un diamètre de siège d'un siège d'étanchéité (33) de l'électrovanne (20), qui sert à bloquer la liaison entre la première sortie (34) et la deuxième sortie (35) avec le retour (32) dans la première position, est plus petit qu'un diamètre d'aiguille d'une aiguille de soupape (21) de l'électrovanne (20).
  14. Soupape d'injection de carburant selon l'une quelconque des revendications 1 à 13, caractérisée en ce qu'un diamètre d'aiguille d'une aiguille de soupape (21) de l'électrovanne (20) est inférieur à un diamètre de siège d'un autre siège d'étanchéité (38) qui sert à bloquer la deuxième sortie (35) dans la troisième position.
EP20070122092 2006-12-29 2007-12-03 Soupape d'injection de combustible Not-in-force EP1939440B1 (fr)

Applications Claiming Priority (1)

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DE200610061947 DE102006061947A1 (de) 2006-12-29 2006-12-29 Brennstoffeinspritzventil

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EP1939440A2 EP1939440A2 (fr) 2008-07-02
EP1939440A3 EP1939440A3 (fr) 2009-09-09
EP1939440B1 true EP1939440B1 (fr) 2013-06-19

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FR2924175A3 (fr) * 2007-11-23 2009-05-29 Renault Sas Dispositif d'injection de carburant dote d'injecteur(s)
GB0919645D0 (en) 2009-11-10 2009-12-23 Sentec Ltd Flux switched fuel injector
US9562505B2 (en) * 2013-06-11 2017-02-07 Cummins Inc. System and method for control of fuel injector spray
DE102013112752A1 (de) * 2013-11-19 2015-05-21 Denso Corporation Kraftstoffinjektor
DE102013112751A1 (de) * 2013-11-19 2015-05-21 Denso Corporation Kraftstoffinjektor
DE102017202932A1 (de) * 2017-02-23 2018-08-23 Robert Bosch Gmbh Brennstoffeinspritzventil zum Einspritzen eines gasförmigen und/oder flüssigen Brennstoffs
DE102017212084A1 (de) 2017-07-14 2019-01-17 Robert Bosch Gmbh Bistabiles Magnetventil für ein hydraulisches Bremssystem und Verfahren zur Ansteuerung eines solchen Ventils
CN114458502A (zh) * 2022-03-09 2022-05-10 哈尔滨工程大学 一种稳定落座的永磁-电磁耦合磁场高速电磁阀
CN114458504B (zh) * 2022-03-09 2022-10-28 哈尔滨工程大学 一种变阻尼预磁化的永磁-电磁混合励磁高速电磁阀
CN114483404B (zh) * 2022-03-09 2023-02-14 哈尔滨工程大学 一种具有柔性阻尼的电磁-永磁多磁场复合式高速电磁阀
CN115977842B (zh) * 2023-01-05 2024-04-12 钧风电控科技(泰州)有限责任公司 一种辅助关闭的燃油喷射器

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JP2001012636A (ja) * 1999-06-29 2001-01-16 Aisan Ind Co Ltd 複数のソレノイドと共通筒を有する燃料噴射装置
JP3578105B2 (ja) * 2001-04-12 2004-10-20 トヨタ自動車株式会社 燃料噴射装置
DE10164123A1 (de) 2001-12-24 2003-01-30 Bosch Gmbh Robert Kraftstoff-Einspritzvorrichtung
DE102005020832A1 (de) * 2005-05-04 2006-11-09 Robert Bosch Gmbh Kraftstoffeinspritzdüse

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DE102006061947A1 (de) 2008-07-03
EP1939440A3 (fr) 2009-09-09

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