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EP1593839A1 - Injecteur de carburant pour un moteur a combustion interne avec une soupape à plusieurs étages - Google Patents

Injecteur de carburant pour un moteur a combustion interne avec une soupape à plusieurs étages Download PDF

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Publication number
EP1593839A1
EP1593839A1 EP05101342A EP05101342A EP1593839A1 EP 1593839 A1 EP1593839 A1 EP 1593839A1 EP 05101342 A EP05101342 A EP 05101342A EP 05101342 A EP05101342 A EP 05101342A EP 1593839 A1 EP1593839 A1 EP 1593839A1
Authority
EP
European Patent Office
Prior art keywords
valve
pressure
chamber
fuel injection
actuating
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.)
Granted
Application number
EP05101342A
Other languages
German (de)
English (en)
Other versions
EP1593839B1 (fr
Inventor
Hans-Christoph Magel
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 EP1593839A1 publication Critical patent/EP1593839A1/fr
Application granted granted Critical
Publication of EP1593839B1 publication Critical patent/EP1593839B1/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
    • F02M57/00—Fuel-injectors combined or associated with other devices
    • F02M57/02—Injectors structurally combined with fuel-injection pumps
    • F02M57/022—Injectors structurally combined with fuel-injection pumps characterised by the pump drive
    • F02M57/025—Injectors structurally combined with fuel-injection pumps characterised by the pump drive hydraulic, e.g. with pressure amplification
    • 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
    • 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
    • F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
    • F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
    • F02M59/105—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive hydraulic drive
    • 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
    • F02M59/464—Inlet valves of the check 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
    • 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
    • F02M63/0028—Valves characterised by the valve actuating means hydraulic
    • F02M63/0029—Valves characterised by the valve actuating means hydraulic using a pilot valve controlling a hydraulic chamber
    • 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
    • F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
    • F02M2200/304—Fuel-injection apparatus having mechanical parts, the movement of which is damped using hydraulic means

Definitions

  • DE 101 23 910.6 relates to a fuel injection device. This is at a Internal combustion engine used.
  • the combustion chambers of the internal combustion engine are each supplied with fuel via fuel injectors.
  • the fuel injectors are acted upon by a high pressure source, further comprising the fuel injection device
  • a pressure booster the a movable pressure booster piston having one to the high pressure source connectable space from a high pressure chamber connected to the fuel injector separates.
  • the fuel pressure in the high-pressure chamber can be achieved by filling a rear space the pressure booster with fuel or by emptying this back space of fuel vary.
  • the fuel injector includes a movable closing piston for opening or closing the combustion chamber facing injection openings of the fuel injector.
  • a closing piston protrudes into a closing pressure chamber, so that this with fuel pressure can be acted upon.
  • a closing piston acting in the closing direction Achieved power.
  • the closing pressure chamber and another room are shared by a common Workspace formed, with all parts of the working space permanently to Exchange of fuel are interconnected.
  • the fuel injector comprises a high-pressure reservoir, a pressure booster and a metering valve.
  • the pressure intensifier comprises a working space and a control room, separated from each other by axially movable pistons are separated.
  • a pressure change in the control chamber of the pressure booster has a pressure change in a compression chamber result, via a fuel inlet, a nozzle chamber applied.
  • the nozzle space surrounds an injection valve member which, for example may be formed as a nozzle needle.
  • a nozzle spring chamber acting upon the injection valve member is on the high pressure side via a line containing a feed throttle point from Compression space of the intensifier can be filled. Downstream is the nozzle spring chamber via a line containing a drain throttle point with a space of the pressure booster connected.
  • From DE 102 29 415 is also a device for Nadelhubdämpfung to pressure-controlled Fuel injectors known.
  • this solution comprises a device for injection from fuel to a fuel injector, which is powered by a high pressure source high pressure fuel can be acted upon and actuated via a metering valve.
  • the injection valve member is a independently movable from this damping element assigned, which limits a damping space.
  • the damping element has at least an overflow channel for connecting the damping chamber with another hydraulic space up.
  • a servo control valve which by different opening speeds of the valve member of the servo control valve a Forming the injection pressure curve allows the fuel injector.
  • Different opening speeds the valve member, e.g. a servo piston of a servo control valve can be connected via a multi-stage control valve within the servo loop, e.g. via a 3/3-solenoid valve will be realized.
  • This can each in the combustion chamber of the internal combustion engine amount of fuel to be injected, i. the injection rate via the engine control unit the internal combustion engine are adjusted.
  • the flexibility, i. the Forming of the injection pressure curve (Rateshaping) can be increased thereby and thus the injection optimally to the particular requirements of an internal combustion engine be adjusted.
  • the invention proposes to control the servo loop of a Fuel injector actuated servo control valve to use a three-stage 3/3-control valve.
  • a Fuel injector actuated servo control valve may have different Flow restrictor cross sections are released, over which different Abêtvolumina can be removed, the different opening speeds of the valve member allow in the form of a servo valve piston.
  • control edges of the 3/2-valve member can be with these different opening speeds represent a shaping of the injection pressure.
  • an actuator such as a piezoelectric actuator or a solenoid valve per fuel injector used, so that the manufacturing effort is limited. Also remains the to be performed on the control unit of the internal combustion engine modification effort low, since only one final stage per fuel injector, the corresponding number of cylinders provided with fuel to be supplied cylinder of the internal combustion engine, low.
  • Solenoid valves or piezo valves can be used as multi-stage control valves as well as valves that allow continuous cross-sectional control.
  • Figure 1 shows a first embodiment of a pressure booster containing Fuel injector with a multi-stage configured valve for control.
  • a pressure amplifier 5 contains one Fuel injector 3 via a high pressure line 2 with a pressure accumulator 1 (Common Rail) communicates.
  • the fuel injector 3 preferably comprises a plurality of parts trained injector 4, in which a pressure booster 5 is received.
  • the Pressure booster 5 comprises a first piston part 6, which is acted upon by a restoring spring 7 is.
  • the return spring 7 is based on an example annular configured Stop 10 from which received in a working space 8 of the booster 5 is.
  • the working space 8 of the pressure booster 5 is permanently connected to the pressure accumulator. 1 (Common Rail) and is connected to the pressure prevailing in the accumulator 1 system pressure level applied.
  • the differential pressure chamber 9 is depressurized via a control line 11.
  • Pressure amplifier 5 also includes a compression chamber 12, which has an end face 14 of a second piston part 13 of the pressure booster 5 is acted upon. Corresponding the pressure transmission ratio, which varies depending on the design of the booster 5, the fuel volume received in the compression space 12 becomes compressed to a higher pressure. From the compression chamber 12 of the booster fifth branches off a nozzle chamber inlet 23, which a nozzle chamber 24 of the fuel injector 3 with one achievable according to the transmission ratio of the booster 5 applied higher pressure level.
  • a first throttle point 16 is formed to a pressure chamber 17.
  • a damping piston 19 whose one end face an opposite end face of an example integrally formed, as a nozzle needle procured injection valve member 18 acted upon.
  • the damping piston 19 comprises a Bore 20, in which a second throttle body 21 is formed.
  • the Damping piston 19 acted upon by a spring 22, which is located on a surface of the pressure chamber 17 is supported.
  • Nozzle space inlet 23 acts on the nozzle chamber 24 with an under elevated Pressure fuel volume.
  • the example integrally formed injection valve member 18 encloses, is at this a pressure stage 25th educated.
  • Fuel acts on the pressure stage 25 of the injection member, for example, integrally formed injection valve member 18 an acting in the opening direction hydraulic force.
  • the fuel received there flows through an annular gap injection openings 26 to, which is in the open position injection valve member 18 the Injecting a quantity of fuel into a combustion chamber, not shown here, of an internal combustion engine release.
  • the control line 11 for pressure relief of the differential pressure space 9 (rear space) of the pressure booster 5 opens into a control valve 32 of a multi-stage valve 30, which is arranged in the upper region of the fuel injector 3 is.
  • the control line 11 opens into a first hydraulic chamber 33 of the control valve 32.
  • To close the first hydraulic chamber 33 of the control valve 32 is on the servo valve piston 35 a flat seat 38 is formed.
  • the flat seat 38 in the lower area of the servo valve piston 35 closes a first control edge 36.
  • a second control edge 37 is formed in the housing 42 of the Control valve 32.
  • Above the first hydraulic chamber 33 is located in the housing 42 of the control valve 32, a second hydraulic space 34 which is connected to a branch 40 of the high-pressure line 2.
  • the second hydraulic chamber 34 is always in the pressure accumulator 1 (Common Rail) prevailing system pressure level.
  • a pressure chamber 39 In the upper region of the housing 42 is located a pressure chamber 39. This is a third throttle 41 upstream of the branch 40 of the high pressure line 2 leads away.
  • a low-pressure space disposed through the Servo valve piston 35 is released or closed according to its position. From This space from a first return 43 extends into the low pressure area of one here Not shown fuel injection system.
  • a line in which a fifth Throttle 56 is formed runs parallel to the branch 40 of the High pressure line 2, at a fourth control edge 54 in the housing 50 of the actuating valve 31 opens.
  • a vertical Direction movable valve member 51 In the housing 50 of the actuating valve 31 is a vertical Direction movable valve member 51. At its lower end is another flat seat 52nd formed, which releases a third control edge 53 or closes.
  • a low-pressure side hydraulic chamber of which a return 62nd to a low pressure region of a fuel injection system, not shown here runs.
  • a fourth throttle body 55 is formed in the branch 40 of the high pressure line 2, which within the housing 50 of Control valve 31 extends.
  • the housing 50 of the Control valve 31 further comprises a hydraulic space 57, which over the other Flat seat 52 in conjunction with the first control edge 53 separated from the second return 62 is.
  • an armature 58 is provided, which with a Magnetic coil 60 cooperates.
  • the actuation valve 31 can also be actuated via a piezoactuator (not shown in FIG. 1) become.
  • Figure 2 shows the stroke 70 of the valve member 51 of the actuating valve 31, applied over the time axis with different current supply.
  • a first power level 71 adjusts a first stroke of the valve member 51, starting at a driving time 73, in which the solenoid coil 60 or a piezoelectric actuator of the actuating valve 31 is energized.
  • the stroke which the valve member 51 of the actuating valve 31 at a Current supply with a second Bestromungsclude 72 is also shown. In the latter case, the valve member 51 of the actuating valve 31 sets a maximum Back stroke.
  • the valve member 51 of the actuating valve 31 When energizing the solenoid 60 with a first, relatively low current level 71, the valve member 51 of the actuating valve 31 is in a first, middle switching position posed. In this state, the armature 58 is located on a magnetic coil 60 surrounding biased by the further spring 61, for example, ring-shaped Stop. In this switching position, the fifth throttle body 56 is released, wherein the fourth throttle 55 remains closed.
  • the further flat seat 52 is open, so that the in the hydraulic chamber 57 contained fuel volume in the second return to the Low pressure range of the fuel injection system can flow. This will be a Pressure relief of the pressure chamber 39 by means of control valve 32.
  • the servo valve piston 35th opens up and in turn releases the flat seat 38. As a result, it flows in the differential pressure chamber 9 (back space) of the booster 5 contained fuel supply via the second hydraulic space 33 in the first return 43 to the low pressure side of the fuel injection system from.
  • the servo valve piston 35 opens slowly, so that in the compression chamber 12 is a delayed, slow pressure build-up, via the nozzle chamber inlet 23 and the nozzle chamber 24, a slow opening of the injector member which can be formed integrally, for example 18 sets.
  • the injection openings 26 in the combustion chamber of a self-igniting Internal combustion engine opened only slowly, so that one in Figure 4 illustrated, designated with reference numeral 91 first pressure increase during the injection at the nozzle.
  • FIG. 3 the stroke of the servo valve piston which adjusts itself at the first energization level 71 is shown 35 of the valve 32 as well as adjusting at the second Bestromungswith 72 Stroke of the servo valve 35 reproduced.
  • a second ramp-shaped stroke 83 sets in, as can be seen in FIG. 3, which has a second gradient 85. Both strokes 82, 83 are limited by the maximum stroke H max , which is indicated in the illustration of Figure 3 by a plateau 81, which extends only slightly below the maximum stroke H max of the servo valve piston 35.
  • FIG. 4 shows the pressure curve at the injection nozzle.
  • the resulting Hubverohn 93 of the injection valve member 18 are as shown in FIG Figure 5 can be seen.
  • the stroke of the injection valve member 18 when the solenoid is energized 60 and the piezoelectric actuator with a first, lower current level 71 is through Reference numeral 94 and has a compared to the energization of the magnetic coil 60 and the piezoelectric actuator of the actuating valve 31 with a second higher Current level 72, flatter rise.
  • the stroke course of the injection valve member 18 at Energization of the solenoid 60 and a piezoelectric actuator of the actuating valve 31 with the second Bestromungsclude 72, is in the illustration of Figure 5 by reference numerals 95 indicated.
  • the multi-stage valve 30 In the deactivated state of rest, the multi-stage valve 30 is closed. This is the Flat seat 38 of the control valve 32 also closed, so that the differential pressure chamber. 9 (Back space) of the pressure booster 5 and the control line 11 from the first return 43 in the low pressure region of the fuel injector are separated. Pressure booster 5 is in this Condition pressure balanced, so that no pressure gain takes place through this.
  • the differential pressure chamber 9 back space
  • the multi-stage valve 30 relieved of pressure. This is done by energizing the solenoid 60, whereupon the valve member 51 rises and the further flat seat 52 releases. about the open, further flat seat 52 flows control volume, which via the branch 40th and the fourth throttle point 56 is present, in the second low-pressure side return 62 from. Due to the resulting pressure relief of the pressure chamber 31, the servo valve piston moves 35 and releases the flat seat 38, so that fuel from the differential pressure chamber 9 via the control line 11 in the first return 43 to the low pressure side of the fuel injection system flows.
  • the pressure in the compression chamber 12 increases sharply and is in accordance with the transmission ratio of the booster 5 by the Nozzle space inlet 23 directed into the nozzle chamber 24.
  • At the pressure stage 25 of the injection valve member 18 builds up in the opening direction acting hydraulic force, so that the Injection openings 26 in the combustion chamber end of the fuel injector 3 released and fuel can be injected into these.
  • the actuation valve 31 is deactivated, i. the Energization of the solenoid 60 and a piezoelectric actuator canceled.
  • the closing spring 59 represents the valve member 51 in its closed position, so that the further flat seat 52 is closed becomes.
  • the servo valve piston 35 is placed with its flat seat 38 in its closed position becomes.
  • the first control edge 36 is above the low pressure side hydraulic Space from which the first return 43 in the low pressure region of the fuel injection system is fed, closed and the piston parts 6, 13 of the booster 5 move back to their rest position. Due to this, the pressure in the pressure chamber drops 24 down, the hydraulic force acting there in the opening direction collapses, so that the injection valve member 18 by the pressure relief of the pressure chamber 17 in its closed position drives, supported by the spring 22.
  • the over the different Bestromungspractics 71, 72 of the solenoid 60 and a piezoelectric actuator of the actuating valve 31 can be set achievable injection forms via a control unit associated with the internal combustion engine within maps be varied. This allows the opening speeds of the multi-stage Valve 30 to the particular conditions of use of the self-igniting internal combustion engine to adjust. Is a slow movement of the servo valve piston 35 of the control valve 32 or a slow movement of the valve member 51 of the actuating valve 31 ensures In particular, small amounts of injection can be reproducibly displayed, which for Pre-injections of fuel into the combustion chamber of an internal combustion engine required are.
  • FIG. 6 is a further embodiment variant of that shown in FIG Remove fuel injector.
  • the multistage shown in FIG Valve 30 and in particular the actuating valve 31 is a modification.
  • the valve member 51 a the fourth control edge 54 occlusive Sliding seal has, in the illustration of Figure 6, the valve member 51 provided with a valve seat 100.
  • the conical surface 102 of the valve member 51 acts with a seat edge 101 together.
  • the embodiment of the actuating valve 31 with a valve seat 100th allows advantageously to achieve a high sealing effect, with small strokes on a slide seal - as shown in Figure 1 - is not always achievable.
  • Numeral 103 is a low-pressure space, from which the return 62 extends into the low pressure region of the fuel supply system.

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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)
EP05101342A 2004-05-06 2005-02-22 Injecteur de carburant pour un moteur a combustion interne avec une soupape à plusieurs étages Expired - Lifetime EP1593839B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004022270A DE102004022270A1 (de) 2004-05-06 2004-05-06 Kraftstoffinjektor für Verbrennungskraftmaschinen mit mehrstufigem Steuerventil
DE102004022270 2004-05-06

Publications (2)

Publication Number Publication Date
EP1593839A1 true EP1593839A1 (fr) 2005-11-09
EP1593839B1 EP1593839B1 (fr) 2007-05-02

Family

ID=34938787

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05101342A Expired - Lifetime EP1593839B1 (fr) 2004-05-06 2005-02-22 Injecteur de carburant pour un moteur a combustion interne avec une soupape à plusieurs étages

Country Status (4)

Country Link
US (1) US7201149B2 (fr)
EP (1) EP1593839B1 (fr)
DE (2) DE102004022270A1 (fr)
ES (1) ES2285638T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007106510A3 (fr) * 2006-03-13 2007-10-25 Sturman Ind Inc Injecteurs à carburant à commande directe du pointeau et procédés correspondants
WO2011029829A1 (fr) * 2009-09-10 2011-03-17 Robert Bosch Gmbh Injecteur

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7320310B2 (en) * 2003-04-02 2008-01-22 Robert Bosch Gmbh Fuel injector provided with provided with a pressure transmitter controlled by a servo valve
DE10352736A1 (de) * 2003-11-12 2005-07-07 Robert Bosch Gmbh Kraftstoffinjektor mit direkter Nadeleinspritzung
DE102004022268A1 (de) * 2004-05-06 2005-12-01 Robert Bosch Gmbh Ansteuerverfahren zur Beeinflussung der Öffnungsgeschwindigkeit eines Steuerventiles an einem Kraftstoffinjektor
DE102004022267A1 (de) * 2004-05-06 2005-12-01 Robert Bosch Gmbh Verfahren und Vorrichtung zur Formung des Einspritzdruckes an einem Kraftstoffinjektor
JP4003770B2 (ja) * 2004-10-01 2007-11-07 トヨタ自動車株式会社 燃料噴射装置
DE502005010779D1 (de) * 2004-12-03 2011-02-10 Ganser Hydromag Brennstoffeinspritzventil mit druckverstärkung
DE102004062073B4 (de) * 2004-12-23 2015-08-13 Continental Automotive Gmbh Verfahren und Vorrichtung zur Kompensation von Prelleffekten in einem piezogesteuerten Einspritzsystem einer Verbrennungskraftmaschine
JP4305394B2 (ja) * 2005-01-25 2009-07-29 株式会社デンソー 内燃機関用燃料噴射装置
US7111614B1 (en) * 2005-08-29 2006-09-26 Caterpillar Inc. Single fluid injector with rate shaping capability
CN101680410B (zh) 2007-05-09 2011-11-16 斯德曼数字系统公司 具有主动针控制器的多级增强型喷射器和喷射方法
US20090126689A1 (en) * 2007-11-16 2009-05-21 Caterpillar Inc. Fuel injector having valve with opposing sealing surfaces
WO2009069693A1 (fr) * 2007-11-27 2009-06-04 Kyocera Corporation Elément piézoélectrique stratifié et son procédé de fabrication, appareil d'injection et système d'injection de combustible
US7578283B1 (en) 2008-06-30 2009-08-25 Caterpillar Inc. System for selectively increasing fuel pressure in a fuel injection system
US20100012745A1 (en) 2008-07-15 2010-01-21 Sturman Digital Systems, Llc Fuel Injectors with Intensified Fuel Storage and Methods of Operating an Engine Therewith
US10982635B2 (en) * 2012-05-29 2021-04-20 Delphi Technologies Ip Limited Fuel injector and method for controlling the same
US10152467B2 (en) 2012-08-13 2018-12-11 Google Llc Managing a sharing of media content among client computers
US9181890B2 (en) 2012-11-19 2015-11-10 Sturman Digital Systems, Llc Methods of operation of fuel injectors with intensified fuel storage

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000055496A1 (fr) * 1999-03-12 2000-09-21 Robert Bosch Gmbh Systeme d'injection de carburant
WO2004003376A1 (fr) * 2002-06-29 2004-01-08 Robert Bosch Gmbh Injecteur de carburant a multiplicateur de pression a reduction de pression rapide lors de l'injection
DE10315015A1 (de) * 2003-04-02 2004-10-28 Robert Bosch Gmbh Kraftstoffinjektor mit Druckverstärker und Servoventil mit optimierter Steuermenge

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10337574A1 (de) * 2003-08-14 2005-03-10 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000055496A1 (fr) * 1999-03-12 2000-09-21 Robert Bosch Gmbh Systeme d'injection de carburant
WO2004003376A1 (fr) * 2002-06-29 2004-01-08 Robert Bosch Gmbh Injecteur de carburant a multiplicateur de pression a reduction de pression rapide lors de l'injection
DE10315015A1 (de) * 2003-04-02 2004-10-28 Robert Bosch Gmbh Kraftstoffinjektor mit Druckverstärker und Servoventil mit optimierter Steuermenge

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007106510A3 (fr) * 2006-03-13 2007-10-25 Sturman Ind Inc Injecteurs à carburant à commande directe du pointeau et procédés correspondants
US7412969B2 (en) 2006-03-13 2008-08-19 Sturman Industries, Inc. Direct needle control fuel injectors and methods
WO2011029829A1 (fr) * 2009-09-10 2011-03-17 Robert Bosch Gmbh Injecteur

Also Published As

Publication number Publication date
EP1593839B1 (fr) 2007-05-02
DE502005000640D1 (de) 2007-06-14
DE102004022270A1 (de) 2005-12-01
US20050263133A1 (en) 2005-12-01
ES2285638T3 (es) 2007-11-16
US7201149B2 (en) 2007-04-10

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