EP1908952A2 - Injecteur pour une installation à injection de carburant - Google Patents

Injecteur pour une installation à injection de carburant Download PDF

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Publication number
EP1908952A2
EP1908952A2 EP07114227A EP07114227A EP1908952A2 EP 1908952 A2 EP1908952 A2 EP 1908952A2 EP 07114227 A EP07114227 A EP 07114227A EP 07114227 A EP07114227 A EP 07114227A EP 1908952 A2 EP1908952 A2 EP 1908952A2
Authority
EP
European Patent Office
Prior art keywords
needle
piston
chamber
pressure
booster
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
EP07114227A
Other languages
German (de)
English (en)
Other versions
EP1908952A3 (fr
EP1908952B1 (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 EP1908952A2 publication Critical patent/EP1908952A2/fr
Publication of EP1908952A3 publication Critical patent/EP1908952A3/fr
Application granted granted Critical
Publication of EP1908952B1 publication Critical patent/EP1908952B1/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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
    • F02M63/0078—Valve member details, e.g. special shape, hollow or fuel passages in the valve member
    • 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
    • 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
    • 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
    • F02M57/026—Construction details of pressure amplifiers, e.g. fuel passages or check valves arranged in the intensifier piston or head, particular diameter relationships, stop members, arrangement of ports or conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/042—The valves being provided with fuel passages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • 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
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/70—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger
    • F02M2200/703—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic

Definitions

  • the present invention relates to an injector for a fuel injection system of an internal combustion engine, in particular in a motor vehicle.
  • the injector according to the invention with the features of claim 1 has the advantage over the prior art that a pressure intensifier for amplifying the injection pressure is arranged in a needle section, an injector body consisting of the needle section and an actuator section. Said actuator section and the needle section thereby form the injector, wherein between the two sections an intermediate plate is arranged, which may be formed either as a separate component or as part of an injector, and at least one injection hole is provided in the needle portion through which fuel can be injected into a combustion chamber.
  • the arranged in the needle section pressure booster is used to increase the fuel injection pressure against a system pressure and thereby helps to improve the performance of the internal combustion engine while reducing the pollutant emissions thereof.
  • a nozzle chamber which communicates with the at least one injection hole is under high pressure during operation of the injector, so that correspondingly thick and expensive material has to be used.
  • Due to the arrangement of the pressure booster in the needle section of the nozzle chamber can be made significantly smaller and limited to the needle section substantially, so that only this still has to be formed of thick or expensive material.
  • the integration of the pressure booster in the needle section reduces an axial length of the injector, which can be defused in modern engine compartments always tense space situation.
  • the number of highly precise parts is reduced by a built-in needle section pressure intensifier, which can also reduce the manufacturing cost.
  • the high loads during injection of the fuel are limited to the needle portion in the combustion chamber, so that in particular the Aktorabites compared to previously known injectors can have a significantly lower strength and at the same time structurally simpler and easier to build , which also contributes to the reduction of manufacturing costs.
  • the needle portion can also be made in one piece in order to further reduce the manufacturing costs.
  • the pressure booster has a piston which is mounted in a manner adjustable in stroke in the needle section, wherein the piston in the needle section delimits a nozzle chamber communicating with the at least one injection hole.
  • the piston forms together with the needle portion of the nozzle chamber, which is spatially highly limited, whereby parts that limit the nozzle space and therefore must withstand high loads, must be provided only in this area.
  • the needle section is made in one piece and is therefore inexpensive to produce.
  • the piston in particular by a hollow piston, a structurally simple pressure transmission can be effected, wherein the piston as described, the nozzle chamber and at the same time limits a translator, which for Translation of the system pressure is provided in the higher injection pressure.
  • Such hollow piston can be produced relatively inexpensively and with high precision, which can be achieved on the one hand low unit costs and on the other hand, a high product quality.
  • they have in comparison to known stepped piston the great advantage that a double guide can be omitted.
  • a valve piston with a first and a second valve seat is arranged adjustable in stroke, wherein in a first stroke end position of the first valve seat closed and the second valve seat is open and opened in a second stroke end of the first valve seat and the second valve seat closed is.
  • the two valve seats act together in such a way that in the first Hubend ein a pressure equalization between a rod control room and a surrounding pressure chamber can be achieved, while in the second Hubend ein the rod control room is communicatively connected to a return.
  • the actuator section delimits a pressure space in which an actuator, in particular a piezoelectric actuator, is arranged.
  • the arrangement of the actuator within the injector body, especially within the Aktorabiteses and in a pressure chamber makes it possible to accommodate this space-saving and protected at the same time in the injector.
  • the sealing of the pressure chamber takes place, for example, via a spring device, which presses the actuator with a frusto-conical sealing region in an opening formed in a complementary manner to the sealing region in an end plate of the actuator section and thereby seals.
  • an injector 1 comprises an actuator section 2, a needle section 3 and an intermediate plate 4 arranged between actuator section 2 and needle section 3, which can be designed either as a separate component or as part of an injector housing.
  • the actuator section 2 and the needle section 3 are usually firmly connected to each other by means of a connecting element, not shown, in particular in the form of a union nut.
  • the needle section 3 has at least one injection hole 5 through which fuel can be injected into an injection space (not shown).
  • a pressure booster 6 is arranged in the needle section 3, which generates an injection pressure of the fuel, which is significantly higher than the usual system pressure of the injector 1.
  • an actuator 7 in particular a piezoelectric actuator, arranged and indeed within a pressure chamber 9, which is circumferentially bounded by the actuator section 2.
  • the actuator 7 is connected via electrical connection lines 8 with a control device, not shown, which activates or deactivates the actuator 7.
  • the actuator 7 Connected to the pressure chamber 9 with a pressure accumulator 11, which stores a certain amount of befindlichem under system pressure fuel.
  • the pressure accumulator 11 may also be formed as a pressure source.
  • the actuator 7 On its side facing away from the needle section 3, the actuator 7 has a frusto-conical taper with which it engages in a complementary opening formed in an end wall 12 of the Aktorabêtes 2 and thereby seals the pressure chamber 9 in the direction of the end wall 12.
  • the actuator 7 At its end opposite the frusto-conical section, the actuator 7 has a sealing sleeve 13 mounted axially displaceably thereon, which is prestressed by a spring device 14a with a sealing edge against one side of the actuator section 2.
  • valve piston 15 which is mounted adjustable in stroke in the above-mentioned side of Aktorabêtes 2 Aktorabêtes 2 and peripherally the sealing sleeve.
  • the valve piston 15 has a first valve seat 16 and a second valve seat 17, wherein in a first stroke end position (see FIG. 1) the first valve seat 16 is closed and the second valve seat 17 is open and in a second stroke end position, not shown, the first valve seat 16 opened and the second valve seat 17 is closed.
  • valve piston pressure chamber 18 On its, the Aktor horrraum 10 end facing the valve piston 15 limited in its second stroke end position a valve piston pressure chamber 18, which is otherwise limited by the intermediate plate 4.
  • the valve piston 15 At its end facing the needle section 3, the valve piston 15 is surrounded by a pressure chamber 9 ', which is connected to a rod control chamber 20 via a coupling path 19 passing through the intermediate plate 4.
  • the rod control chamber 20 is thereby axially bounded on the one hand by the intermediate plate 4 and on the other hand by a control rod 27 and peripherally by a control sleeve 21.
  • Radially outside the rod control chamber 20 is a further pressure chamber 9 "which communicates with the valve piston pressure chamber 18 via a coupling path 19a Control sleeve 21 is preferably biased by a spring device 14 'against the intermediate plate 4.
  • a pressure booster 6 is arranged, which has a piston 22 which is mounted adjustable in height in the needle section 3.
  • the piston 22 delimits the end face together with the needle portion 3 a nozzle chamber 23, while circumferentially together with the needle portion 3 limits a translator 24.
  • Placed in the piston 22 and in the nozzle chamber 23 is a nozzle needle 25, in which according to FIGS. 1 to 3, a coupling path 19b is integrated, which connects the nozzle chamber 23 with the booster chamber 24 of the pressure booster 6 hydraulically.
  • the coupling path 19b is preferably throttled, in particular it may have a throttle device 26.
  • the control rod 27 is arranged, which dips one end in the booster chamber 24 and the other end in the rod control chamber 20 and limits this.
  • a coupling path 19c Coaxially inside the control rod 27 there is a coupling path 19c, which connects the rod control chamber 20 to the translator chamber 24 connects hydraulically.
  • the nozzle needle 25 facing the end, the control rod 27 can close the coupling path 19b.
  • a spring device 14b is provided, which biases the control rod 27 away from the nozzle needle 25.
  • the piston 22 has a collar 28, on which a spring device 14c on the one hand is supported and biases this collar 28 away from a needle-side-side stop 29.
  • the term collar 28 is hereby used purely by way of example, so that a different form of impact is also to be encompassed by the invention.
  • the piston 22 may also be formed as a stepped piston, wherein a design as a hollow piston - as shown in FIGS. 2 to 4 - is advantageous, since this can be omitted a structurally complex double guide.
  • An injection process of the injector 1 according to FIG. 1 takes place essentially as follows.
  • the entire injector 1 is under a, in the pressure accumulator 11 and in the pressure source existing hydraulic pressure, such as a rail pressure, the actuator 7 is deactivated and the nozzle needle 25, the at least one injection hole 5 closes.
  • the valve piston 15 moves downward, whereby the first valve seat 16 is opened and the second valve seat 17 is closed.
  • the rod control chamber 20 is connected via the coupling path 19 with the pressure chamber 9 'and via this with a return 30.
  • the pressure relief in the rod control chamber 20 also takes place a pressure relief in the booster chamber 24, whereby the piston designed as a stepped piston 22 moves downward and generates the high injection pressure in the nozzle chamber 23.
  • the nozzle needle 25 moves by the pressure drop in the booster chamber 24 upwards, whereby the at least one injection hole 5 is opened and the injection begins.
  • the actuator 7 is deactivated or discharged, whereupon the valve piston 15 moves back upwards into its starting position.
  • This closes the first valve seat 16 and opens the second valve seat 17, whereby a pressure equalization takes place from the rod control chamber 20 via the coupling path 19a and the valve piston pressure chamber 18 or the coupling path 19a with the pressure chamber 9 " of the coupling path 19d, in turn, the rail pressure prevailing in the pressure accumulator 11.
  • the pressure booster 6 or the piston 22 moves in the reverse manner in FIG its starting position back and the nozzle needle 25 closes the at least one injection hole. 5
  • the actuator section 2 is constructed substantially the same in FIG. 1, whereas the needle section 3 differs.
  • the control rod 27 is now guided only in a short piece in, designed as a hollow piston piston 22 and the booster chamber 24 is formed much more compact around the control rod 27 around.
  • the nozzle chamber 23 has a larger volume, wherein likewise the coupling path 19b is arranged between the nozzle chamber 23 and the translator chamber 24.
  • the mode of operation of the injector according to FIG. 2 is similar to the mode of operation of the injector 1 according to FIG. 1.
  • the actuator section 2 is constructed identically to the actuator section 2 according to FIGS. 1 and 2, while in the needle section 3 the nozzle needle 25 has a sealing sleeve 13 'at its end which is designed as a hollow piston 22, which is adjustable in stroke mounted on the nozzle needle 25 and which is biased by a spring means 14 e against an axial end face of the piston 22.
  • the sealing sleeve 13 ' is guided on the nozzle needle 25 and forms with respect to the piston formed as a hollow piston 22 of the booster 6, a sealing edge.
  • the spring device 14e is therefore designed so that the sealing sleeve 13 'lifts off the piston 22 when resetting the pressure booster 6 or the piston 22 and thereby allows a filling of the nozzle chamber 23 with fuel.
  • an injector 1 is shown in Fig. 4, which in its needle portion 3 has a fixedly connected to the needle portion 3 guide piston 31, on which one end of the nozzle needle 25 and the other end of the piston formed as a hollow piston 22 are performed.
  • at least one hydraulic path 32 is provided, which connects a compression space 34 of the pressure booster 6 with the nozzle chamber 23 hydraulically.
  • Such a hydraulic path 32 can be made, for example, by a slight flattening of the otherwise circular circumference of the guide piston 31, also called fingerschliff.
  • a coupling path 19e is provided, which connects the booster chamber 24 with a needle control chamber 33 hydraulically.
  • a check valve 35 is arranged, which in the open state, the booster chamber 24 and the needle control chamber 33 connects to a compression space 34 and is permeable only in the direction of the compression space 34 at a corresponding pressure.
  • the nozzle needle 25 is formed as shown in FIG. 4 as a small needle piston, which is guided on the fixed guide piston 31.
  • the guide piston 31 is compressed, for example, with the needle portion 3 of the injector 1, wherein, as mentioned above, corresponding hydraulic paths 32 are provided between the nozzle chamber 23 and the compression space 34.
  • the piston 22 facing the end of the guide piston 31 is guided in the piston 22, wherein the check valve 35 is provided for filling the compression space 34.
  • the operation, in particular in the actuator section 2, of the injector 1 with the operation of the injectors 1 according to FIGS. 1 to 3 is comparable.

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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)
EP20070114227 2006-10-05 2007-08-13 Injecteur pour une installation à injection de carburant Not-in-force EP1908952B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200610047133 DE102006047133A1 (de) 2006-10-05 2006-10-05 Injektor für eine Kraftstoffeinspritzanlage

Publications (3)

Publication Number Publication Date
EP1908952A2 true EP1908952A2 (fr) 2008-04-09
EP1908952A3 EP1908952A3 (fr) 2009-05-13
EP1908952B1 EP1908952B1 (fr) 2012-06-06

Family

ID=38896969

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20070114227 Not-in-force EP1908952B1 (fr) 2006-10-05 2007-08-13 Injecteur pour une installation à injection de carburant

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EP (1) EP1908952B1 (fr)
DE (1) DE102006047133A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010097284A1 (fr) * 2009-02-24 2010-09-02 Robert Bosch Gmbh Injecteur de carburant
WO2010112670A1 (fr) * 2009-04-02 2010-10-07 Wärtsilä Finland Oy Dispositif d'injection de carburant pour moteur à piston
EP2339164A1 (fr) * 2009-12-23 2011-06-29 Robert Bosch GmbH Injecteur de carburant à compensation de pression doté d'une dérivation et d'un volume d'espace de soupape minimisé
WO2013088428A2 (fr) * 2012-03-20 2013-06-20 Lietuvietis Vilis I Injecteur direct à ouverture vers l'intérieur actionné par la pression de carburant à faible inertie
WO2014000968A1 (fr) * 2012-06-27 2014-01-03 Robert Bosch Gmbh Injecteur de carburant pour moteurs a combustion interne
WO2014063819A1 (fr) * 2012-10-26 2014-05-01 L'orange Gmbh Dispositif d'injection de carburant pour moteurs à combustion interne

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10250722A1 (de) * 2002-10-31 2004-05-13 Robert Bosch Gmbh Ventil zum Steuern von Flüssigkeiten mit einer Druckmittelzuführung
DE102004015744A1 (de) * 2004-03-31 2005-10-13 Robert Bosch Gmbh Common-Rail-Injektor

Non-Patent Citations (1)

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

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010097284A1 (fr) * 2009-02-24 2010-09-02 Robert Bosch Gmbh Injecteur de carburant
WO2010112670A1 (fr) * 2009-04-02 2010-10-07 Wärtsilä Finland Oy Dispositif d'injection de carburant pour moteur à piston
KR20120014119A (ko) * 2009-04-02 2012-02-16 바르실라 핀랜드 오이 피스톤 엔진용 연료 주입 장치
JP2012522924A (ja) * 2009-04-02 2012-09-27 ワルトシラ フィンランド オサケユキチュア ピストンエンジン用燃料噴射装置
US9194349B2 (en) 2009-04-02 2015-11-24 Wärtsilä Finland Oy Fuel injection arrangement for piston engine
KR101600649B1 (ko) 2009-04-02 2016-03-07 바르실라 핀랜드 오이 피스톤 엔진용 연료 주입 장치
EP2339164A1 (fr) * 2009-12-23 2011-06-29 Robert Bosch GmbH Injecteur de carburant à compensation de pression doté d'une dérivation et d'un volume d'espace de soupape minimisé
WO2013088428A2 (fr) * 2012-03-20 2013-06-20 Lietuvietis Vilis I Injecteur direct à ouverture vers l'intérieur actionné par la pression de carburant à faible inertie
WO2013088428A3 (fr) * 2012-03-20 2013-08-08 Lietuvietis Vilis I Injecteur direct à ouverture vers l'intérieur actionné par la pression de carburant à faible inertie
WO2014000968A1 (fr) * 2012-06-27 2014-01-03 Robert Bosch Gmbh Injecteur de carburant pour moteurs a combustion interne
WO2014063819A1 (fr) * 2012-10-26 2014-05-01 L'orange Gmbh Dispositif d'injection de carburant pour moteurs à combustion interne

Also Published As

Publication number Publication date
DE102006047133A1 (de) 2008-04-10
EP1908952A3 (fr) 2009-05-13
EP1908952B1 (fr) 2012-06-06

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