EP1507972B1 - Soupape d'injection de carburant de moteurs a combustion interne - Google Patents

Soupape d'injection de carburant de moteurs a combustion interne Download PDF

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Publication number
EP1507972B1
EP1507972B1 EP03752691A EP03752691A EP1507972B1 EP 1507972 B1 EP1507972 B1 EP 1507972B1 EP 03752691 A EP03752691 A EP 03752691A EP 03752691 A EP03752691 A EP 03752691A EP 1507972 B1 EP1507972 B1 EP 1507972B1
Authority
EP
European Patent Office
Prior art keywords
valve
pressure
space
control
fuel injection
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.)
Expired - Lifetime
Application number
EP03752691A
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German (de)
English (en)
Other versions
EP1507972A1 (fr
Inventor
Detlev Potz
Thomas Kuegler
Andreas Koeninger
Predrag Nunic
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 EP1507972A1 publication Critical patent/EP1507972A1/fr
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Publication of EP1507972B1 publication Critical patent/EP1507972B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • F02M61/20—Closing valves mechanically, e.g. arrangements of springs or weights or permanent magnets; Damping of valve lift
    • F02M61/205—Means specially adapted for varying the spring tension or assisting the spring force to close the injection-valve, e.g. with damping of valve lift
    • 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
    • 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
    • F02M45/12—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship providing a continuous cyclic delivery with variable pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/46—Valves, e.g. injectors, with concentric 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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/46—Valves
    • F02M59/466—Electrically operated valves, e.g. using electromagnetic or piezoelectric operating means
    • F02M59/468—Electrically operated valves, e.g. using electromagnetic or piezoelectric operating means using piezoelectric operating means
    • 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
    • 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
    • F02M63/0026—Valves characterised by the valve actuating means electrical, e.g. using solenoid using piezoelectric or magnetostrictive actuators

Definitions

  • the invention is based on fuel injection valves, the have two nested valve needles and otherwise the genus of claim 1 correspond.
  • fuel injection valves are for example from the published patent application DE 41 15 477 Al known.
  • the two valve pins control the opening with its combustion chamber end each of at least one injection port and let to control itself so that either only the outer valve needle opens up a part of the injection openings, or both Open valve pins and open all injection openings.
  • the injection cross section can be set optimally depending on the load of the internal combustion engine.
  • the longitudinal movement of the valve pins in the bore is done by the ratio of acting on the valve needles Opening force and one opposite each Closing force.
  • the opening force results from the hydraulic Pressure on corresponding pressure surfaces on the valve pins, while the closing force in the known fuel injection valves either by springs or likewise generated by hydraulic forces.
  • the known fuel injection valve has the disadvantage that not the opening of both needles in time and duration can be controlled arbitrarily.
  • the outer valve needle opens under pressure control against the force of a recoil spring while the inner valve needle - in addition to the closing force of a Closing spring - a force due to the hydraulic pressure in experiences a control room.
  • a solenoid valve can be However, so only control whether the inner valve needle at a Injection cycle opens or not.
  • the outer valve needle can not through the solenoid valve in its opening behavior to be influenced. This sets the control of the exact Injection timing and the exact injection amount one Border, which of course also the further optimization of the Combustion difficult.
  • the arranged in the housing of the fuel injection valve control valve a valve space in which a valve member is arranged is.
  • the valve member is between two end positions movable, wherein the valve member in the first end position causes both the control room, as well as the control pressure chamber filled with fuel under high pressure, so that both the outer valve needle and the inner valve needle remain in their closed position.
  • the valve member is moved by an actuator, the is preferably electrically operated.
  • the actuator as a piezo actuator, since this the Virtue, with almost any speed to be switchable.
  • the valve member moved by the actuator can be so with different speed of the drive first end position in the second end position, wherein itself by the switching speed of the injection cross section can be set.
  • FIG 1 is a longitudinal section through an inventive Fuel injection valve shown.
  • the fuel injector has a housing 1, which has a holding body 14, a control body 12, an intermediate disc 9, a Intermediate body 7 and a valve body 3 comprises, in abut each other in this order.
  • the individual components of the housing 1 are by a clamping nut 5 against each other pressed and fixed in their position to each other.
  • in the Valve body 3 is formed a bore 16 in which a outer valve needle 20 is arranged longitudinally displaceable.
  • the outer valve needle 20 is in a combustion chamber facing away portion guided in the bore 16 and tapers the Combustion chamber to form a pressure shoulder 27.
  • the outer Valve needle 20 extends to one on the combustion chamber side End of the bore 16 formed seat surface 24, in which a plurality of injection openings 30 are formed, the the seat 24 with the combustion chamber of the internal combustion engine connect.
  • an annular channel 28 is formed, of the Seat 24 extends to the height of the pressure shoulder 27.
  • the annular channel 28 widens a pressure chamber 26, in the one in the valve body 3, the intermediate body 7, the washer 9, the control body 12th and the valve holding body 14 extending inlet channel 10th empties.
  • the pressure chamber 26 and thus also in the annular channel 26 can fuel via the inlet channel 10 under high pressure be introduced.
  • the outer valve needle 20 has a Longitudinal bore 21, in which an inner valve needle 22nd is arranged longitudinally displaceable.
  • Figure 2 shows the designated II section of Figure 1 enlarged.
  • the seat surface 24 is conical and the injection ports 30 are grouped in two Injection opening rows, namely in an outer row of injection openings 130 and in an inner injection port row 230.
  • the outer valve needle 20 has at its combustion chamber side End of a conical outer valve sealing surface 32, so a sealing edge 34 is formed, with which the outer Valve needle 20 in its closed position on the seat surface 24th comes to the plant.
  • the outer injection port row 130 the consists of at least two injection ports 30, with respect to the longitudinal axis of the bore 16 in a radial plane lie, downstream of this sealing edge 34 are arranged.
  • the inner valve needle 22 has at its combustion chamber side End an inner valve sealing surface 36 and a conical surface 38, wherein at the transition, a sealing edge 37 is formed is, with the inner valve needle 22 on the seat 24 abuts in its Schrellowolf.
  • the inner injection port series 230 which also consists of at least two injection ports exists in a common radial plane are arranged to the longitudinal axis of the bore 16, open downstream of the sealing edge 37 of the inner valve needle 22 in the seat 24.
  • the interaction of the two valve pins 20, 22 for control the injection openings 30 is as follows: Should only by the outer injection port row 130 fuel in the Combustion chamber of the internal combustion engine are injected, which is particularly advantageous if the internal combustion engine to be operated in a partial load range, so raises for injection only the outer valve needle 20 of the Seat 24 from. This can cause fuel in the annular channel 28 is under high pressure, between the outer valve sealing surface 32 and the seat surface 24 to the outer injection opening row 130 flow and from there into the combustion chamber the internal combustion engine injected.
  • the inner valve needle 22 remains in its closed position, i. in Appendix on the seat 24, so that the inner row of injection openings 230 remains closed.
  • Target through all injection openings Be injected so also raises the inner Valve needle 22 from the seat 24 from, which also the inner injection port row 230 is released.
  • the intermediate body 7 is coaxial with the bore 16 , a piston bore 45 is formed, the diameter in the formation of a contact surface 41st is designed graduated.
  • a receiving bore 35 is a outer pressure piston 40 disposed on the outer valve needle 20 rests and synchronously with this in the longitudinal direction can move.
  • an annular surface 39 is arranged between the and the contact surface 41 a closing spring 44 under compressive bias is arranged, which formed as a helical compression spring is and surrounds the outer pressure piston 40.
  • the outer pressure piston 40 has a guide bore 47, in which an inner pressure piston 42 is arranged longitudinally displaceable is.
  • the inner pressure piston 42 is located on the inner valve needle 22 and always moves in sync with this.
  • a control pressure chamber 52 Through the guide bore 47 and the end face 53 of the inner Pressure piston 42 is a control pressure chamber 52 limited by the pressure of a hydraulic Kraftrauf the Pressure piston 42 and thus also on the inner valve needle 22nd in the direction of the seat 24 results.
  • a receiving body 13 is arranged, in which an actuator 46 and an associated with this Pressure piece 48 is located.
  • the actuator 46 preferably is designed as a piezo actuator, the pressure piece 48 in the longitudinal direction or in the direction of Force of a spring 49 moves between the pressure piece 48th and the receiving body 13 is arranged.
  • the pressure piece 48 is connected to a valve member 60 which is in a valve chamber 68 is arranged, which formed in the control body 12 is and together with a first valve seat 62 and a this opposite second valve seat 64 a Control valve 58 forms.
  • the valve member 60 is substantially formed as a hemisphere, the hemispherical Valve sealing surface 66 cooperates with the first valve seat 62, while the flat side of the valve member 60 with the second valve seat 64 cooperates, which formed as a flat seat is.
  • the valve space 68 has a connection 59 a leakage oil space 78 formed in the valve holding body 14 on, wherein the connection 59 through the valve member 60 through its interaction with the first valve seat 62 is opened and can be closed.
  • the valve chamber points 68, an outlet throttle 72, the valve space 68th connects to the control room 50.
  • the outlet throttle 72 remains always open, regardless of the position of the valve member 60.
  • connection channel 74 By the interaction of the valve member 60 with the second valve seat 64 is controlled a connection channel 74, the connection between the valve chamber 68 and forms the control pressure chamber 52.
  • the connection channel 74 This extends into the intermediate body 7 and opens laterally in the piston bore 45.
  • the connection to the control pressure chamber 52 is via a transverse bore 55 in the outer pressure piston 40 produced.
  • This connection of the control pressure chamber 52 to the connection channel 74 remains at each position of the outer Pressure piston 40 received.
  • a throttle point 76 is provided which the possible fuel flow can limit through the connecting channel 74 and which can be omitted if necessary.
  • control valve 58 The operation of the control valve 58 is as follows. At the beginning of the injection cycle, the valve member 60 is in contact with the first valve seat 62, so that the connection 59 of the valve chamber 68 is closed to the leakage oil chamber 78. The connecting channel 74 and the outlet throttle 72 are opened, so that the control pressure chamber 52 and the control chamber 50 are hydraulically connected to the valve chamber 68. By the inlet throttle 70 prevails in the control chamber 50 of the injection pressure P 0 , which also prevails in the high-pressure passage 10. Of course, the same pressure P 0 is also present in the control pressure chamber 52 due to the open connections.
  • the time course of the valve member path V, the pressure p in the control pressure chamber 52 and the stroke h of the outer valve needle 20 and the inner valve needle 22 is shown in Figure 4.
  • the upper diagram of Figure 4 shows the movement of the valve member 60, which begins at a time t 0 and which comes at time t 1 at the second valve seat 64 for conditioning.
  • the middle graph shows the pressure p in the control pressure chamber 52 again, and there is a pressure drop from the injection pressure p 0 to a pressure level that is above the pressure p 1 , wherein the pressure p 1 denotes the pressure at which the inner valve needle 22nd driven by the hydraulic force on the inner valve sealing surface 36 lifts off from the seat surface 24.
  • the outer valve needle 20, the stroke h is shown in the lower diagram of Figure 4, begins their movement shortly after the time t 0 and continues the movement until it has reached its maximum stroke.
  • the control valve 58 switches again and the valve member 60 reaches its original position at the first valve seat 62 at time t 3.
  • the control chamber 50 fills via the inlet throttle 70 with the injection pressure of the high-pressure passage 10 and via the connecting channel 74 also builds up in the Control pressure chamber 52 back to the pressure p 0 . Due to the increasing pressure in the control chamber 50, the outer valve needle 20 is pushed back into its closed position.
  • the control valve 58 switches more slowly than in the just described injection through the outer injection opening 130.
  • the relatively slow movement of the valve member 60 remains for a certain time when the valve member 60 between the first valve seat 62 and the second valve seat 64 is open, both the connecting channel 74 and the connection to the leakage oil chamber 78, so that the pressure in the control pressure chamber 52 below the opening pressure of the inner valve needle 22, the pressure p 1 , drops.
  • the outer pressure piston 40 and also the inner pressure piston 42 so that both the outer valve needle 20 and the inner valve needle 22 lift off from the seat surface 24 and release all the injection ports 30.
  • FIG. 5 the time course of the governing quantities is shown in the same manner as in FIG.
  • the upper diagram of FIG. 5 shows the slower course of the movement of the valve member 60, wherein the movement back to the starting position on the first valve seat 62 can take place at the same speed as in the partial load injection.
  • the pressure curve of the pressure p in the control pressure chamber 52 shows a drop in pressure below the pressure p 1 , so that the inner valve needle 22 begins its stroke movement at the time t 1 . This is shown in the lower diagram of Figure 5 by the dashed line.
  • the closing of the fuel injection valve is analogous to the partial load range by the reconstruction of the pressure in the control chamber 50 and the control pressure chamber 52nd
  • actuator 46 is preferably a piezoelectric actuator, the performs a stroke depending on the applied voltage. With a simple voltage regulation it is almost possible each time course in the movement of the valve member 60th realize.
  • other actuators come for example, fast-switching magnetic actuators, their switching speed depends on the magnetic field strength can be controlled.

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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 (7)

  1. Injecteur de carburant pour moteurs à combustion interne, comprenant un boítier (1) logeant dans un alésage (16), une aiguille d'injection extérieure (20) mobile longitudinalement dans laquelle une aiguille intérieure (22) est mobile longitudinalement, qui chacune avec leur extrémité côté chambre de combustion commandent au moins un orifice d'injection (30), une chambre de commande (50) reliée par un étranglement d'arrivée (70) à une chambre haute pression (10), et dont la pression permet d'exercer au moins indirectement une force de fermeture sur l'aiguille extérieure (20), une chambre de pression de commande (52) dont la pression permet d'exercer au moins indirectement une force de fermeture sur l'aiguille intérieure (22), et une chambre d'huile de fuite (78) dans laquelle règne en permanence une pression de carburant plus faible,
    caractérisé en ce que
    le boítier (1) comprend une soupape de commande (58) qui présente une chambre de soupape (68) et un organe de soupape (60) disposé à l'intérieur, la chambre de soupape (68) présentant une liaison (59) vers la chambre d'huile de fuite (78), une liaison ouverte en permanence (72) vers la chambre de commande (50) et une liaison (74) vers la chambre de pression de commande (52), l'organe de soupape (60) étant mobile dans la chambre de soupape (58) entre deux positions d'extrémité et fermant, dans la première position d'extrémité, la liaison (59) vers la chambre d'huile de fuite (78) tandis qu'il ouvre la liaison (74) vers la chambre de pression de commande (52), et fermant, dans la deuxième position d'extrémité, la liaison (74) vers la chambre de pression de commande (52) tandis qu'il ouvre la liaison (59) vers la chambre d'huile de fuite (78).
  2. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    par l'étranglement d'arrivée (70), une quantité de carburant plus faible s'écoule dans la chambre de commande (50) que pour une position correspondante de la soupape de commande (58), hors de la chambre de commande (50) par un étranglement d'évacuation (72) dans la chambre d'huile de fuite (78).
  3. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    l'organe de soupape (60) est déplacé par un actionneur (46).
  4. Injecteur de carburant selon la revendication 3,
    caractérisé en ce que
    l'actionneur (46) peut déplacer l'organe de soupape (60) avec une vitesse différente de la première position d'extrémité dans la deuxième position d'extrémité.
  5. Injecteur de carburant selon la revendication 3 ou 4,
    caractérisé en ce que
    l'actionneur (46) est un actionneur piézoélectrique.
  6. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    toutes les liaisons (59 ; 74 ; 72) vers la chambre de soupape (68) sont ouvertes lorsque l'organe de soupape (60) se trouve entre la première position d'extrémité et la deuxième position d'extrémité.
  7. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    l'organe de soupape (60) peut être déplacé de la première position d'extrémité à la deuxième position d'extrémité si rapidement que la pression régnant dans la chambre de pression de commande (52) ne baisse que de façon minime pendant cette phase.
EP03752691A 2002-05-18 2003-03-25 Soupape d'injection de carburant de moteurs a combustion interne Expired - Lifetime EP1507972B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10222196A DE10222196A1 (de) 2002-05-18 2002-05-18 Kraftstoffeinspritzventil für Brennkraftmaschinen
DE10222196 2002-05-18
PCT/DE2003/000973 WO2003098028A1 (fr) 2002-05-18 2003-03-25 Soupape d'injection de carburant de moteurs a combustion interne

Publications (2)

Publication Number Publication Date
EP1507972A1 EP1507972A1 (fr) 2005-02-23
EP1507972B1 true EP1507972B1 (fr) 2005-12-28

Family

ID=29285567

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03752691A Expired - Lifetime EP1507972B1 (fr) 2002-05-18 2003-03-25 Soupape d'injection de carburant de moteurs a combustion interne

Country Status (5)

Country Link
US (1) US7021567B2 (fr)
EP (1) EP1507972B1 (fr)
JP (1) JP2005526211A (fr)
DE (2) DE10222196A1 (fr)
WO (1) WO2003098028A1 (fr)

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DE10304605A1 (de) * 2003-02-05 2004-08-19 Robert Bosch Gmbh Kraftstoffeinspritzventil mit zwei koaxialen Ventilnadeln
DE10357769B4 (de) * 2003-12-10 2007-06-21 Siemens Ag Kraftstoffeinspritzventil
WO2005075810A1 (fr) * 2004-02-05 2005-08-18 Siemens Aktiengesellschaft Soupape d'injection
DE102004015360A1 (de) * 2004-03-30 2005-10-20 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen
DE102004020550A1 (de) * 2004-04-27 2005-11-24 Robert Bosch Gmbh Einspritzdüse
DE102004032700B3 (de) * 2004-07-06 2005-10-06 Siemens Ag Kraftstoffinjektor mit einem Kugelsitz für ein zweistufiges Servoventil
WO2006058444A1 (fr) * 2004-12-03 2006-06-08 Ganser-Hydromag Ag Soupape d'injection de combustible a multiplication de pression
DE102004061800A1 (de) * 2004-12-22 2006-07-06 Robert Bosch Gmbh Injektor eines Kraftstoffeinspritzsystems einer Brennkraftmaschine
DE102004062073B4 (de) * 2004-12-23 2015-08-13 Continental Automotive Gmbh Verfahren und Vorrichtung zur Kompensation von Prelleffekten in einem piezogesteuerten Einspritzsystem einer Verbrennungskraftmaschine
FR2894631A1 (fr) * 2005-12-13 2007-06-15 Renault Sas Injecteur a vitesse de levee de soupape a aiguille variable et moteur comprenant un tel injecteur
DE102006040645A1 (de) * 2006-08-30 2008-03-13 Robert Bosch Gmbh Injektor für Brennkraftmaschinen
DE102007011618B4 (de) * 2007-01-22 2012-04-26 Airbus Operations Gmbh Crashpaddel zur Verstärkung einer primären Rumpfstruktur eines Flugzeugs
DE102007009165A1 (de) * 2007-02-26 2008-08-28 Robert Bosch Gmbh Kraftstoffinjektor mit einer zusätzlichen Ablaufdrossel oder mit einer verbesserten Anordnung derselben im Steuerventil
JP4772016B2 (ja) 2007-09-07 2011-09-14 トヨタ自動車株式会社 内燃機関の燃料噴射制御装置
DE102010039051A1 (de) * 2010-08-09 2012-02-09 Robert Bosch Gmbh Einspritzvorrichtung
US8690075B2 (en) * 2011-11-07 2014-04-08 Caterpillar Inc. Fuel injector with needle control system that includes F, A, Z and E orifices
HUE027556T2 (en) * 2012-06-13 2016-10-28 Delphi Int Operations Luxembourg Sarl atomizer
JP6384366B2 (ja) * 2015-03-09 2018-09-05 株式会社デンソー 燃料噴射装置
US11591995B2 (en) * 2020-09-15 2023-02-28 Caterpillar Inc. Fuel injector having valve seat orifice plate with valve seat and drain and re-pressurization orifices
US11913381B1 (en) * 2022-08-26 2024-02-27 Hamilton Sundstrand Corporation Force modification of passive spool for control of secondary nozzle circuits
US11913382B1 (en) 2022-08-26 2024-02-27 Hamilton Sundstrand Corporation Variable restriction of a fuel circuit of a fuel nozzle
US11970977B2 (en) 2022-08-26 2024-04-30 Hamilton Sundstrand Corporation Variable restriction of a secondary circuit of a fuel injector
US11970976B2 (en) 2022-08-26 2024-04-30 Hamilton Sundstrand Corporation Variable restriction of fuel nozzle with an auxiliary circuit

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WO2003069151A1 (fr) * 2002-02-14 2003-08-21 Robert Bosch Gmbh Soupape d'injection de carburant pour moteurs a combustion interne

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DE10222196A1 (de) 2003-11-27
DE50302074D1 (de) 2006-02-02
WO2003098028A1 (fr) 2003-11-27
US7021567B2 (en) 2006-04-04
EP1507972A1 (fr) 2005-02-23
JP2005526211A (ja) 2005-09-02
US20050224598A1 (en) 2005-10-13

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