EP1763628B1 - Injecteur - Google Patents

Injecteur Download PDF

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Publication number
EP1763628B1
EP1763628B1 EP05707910A EP05707910A EP1763628B1 EP 1763628 B1 EP1763628 B1 EP 1763628B1 EP 05707910 A EP05707910 A EP 05707910A EP 05707910 A EP05707910 A EP 05707910A EP 1763628 B1 EP1763628 B1 EP 1763628B1
Authority
EP
European Patent Office
Prior art keywords
coupling
chamber
piston
needle
actuator
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
EP05707910A
Other languages
German (de)
English (en)
Other versions
EP1763628A1 (fr
Inventor
Wolfgang Stoecklein
Holger Rapp
Thomas Schwarz
Andreas Gruenberger
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 EP1763628A1 publication Critical patent/EP1763628A1/fr
Application granted granted Critical
Publication of EP1763628B1 publication Critical patent/EP1763628B1/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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/0603—Injectors peculiar thereto with means directly operating the valve needle using piezoelectric or magnetostrictive 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
    • F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
    • 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
    • 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
    • F02M2200/704—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic with actuator and actuated element moving in different directions, e.g. in opposite directions

Definitions

  • such an injection nozzle which has a nozzle needle for controlling an injection of fuel through at least one injection hole.
  • the injection nozzle comprises a piezoelectric actuator for driving a coupling piston, which dips into a coupling space or at least partially delimits this with an end face.
  • the nozzle needle has a control surface, which faces away from the injection hole is arranged on the nozzle needle.
  • the coupling piston is driven by the actuator such that a pulling movement of the coupling piston increases the volume of the coupling space.
  • Another injector with an actuator for driving a coupling piston and a nozzle needle for injecting fuel is out EP 1174 615 A2 known.
  • the coupling piston is designed in the form of a sleeve which limits the coupling space substantially.
  • the actuator drives the coupling piston in such a way that here also a pulling movement of the coupling piston causes an enlargement of the volume of the coupling space.
  • a further injection nozzle has a nozzle needle for controlling an injection of fuel through at least one injection hole.
  • the injection nozzle comprises a piezoelectric actuator for driving a coupling piston, which dips into a coupling space or at least partially limited.
  • the nozzle needle or a needle assembly comprising the nozzle needle has a control surface which at least partially delimits a control chamber and that with the coupling space communicated.
  • the control surface facing the at least one spray hole is arranged on the nozzle needle or on the needle assembly. To open the nozzle needle of the actuator drives the coupling piston in the known injection nozzle so that it dips deeper into the coupling space and thereby reduces the volume of the coupling space.
  • the control surface is subjected to the increased pressure in the control chamber, whereby a force directed away from the at least one injection hole is introduced into the nozzle needle or into the needle assembly.
  • the opening forces acting on the nozzle needle or on the needle assembly predominate, so that the nozzle needle lifts from its seat and allows fuel injection through the at least one injection hole.
  • the control of the nozzle needle is therefore carried out with the help of an overpressure, which can be well above the usual prevailing in the coupling space and the control chamber pressure.
  • an overpressure which can be well above the usual prevailing in the coupling space and the control chamber pressure.
  • the control surface is formed on a control piston which drives the nozzle needle or forms part of the needle assembly.
  • the injection nozzle according to the invention with the features of claim 1 has the advantage that the nozzle needle can be controlled directly with a negative pressure, whereby it is in principle possible to specify the production tolerances less closely. An enlarged leadership game however, reduces the manufacturing costs. Furthermore, in the case of the injection nozzle according to the invention, the pressurization or pressure reduction of the control surface can readily be designed such that no transverse forces are introduced into the nozzle needle or into the needle assembly, which improves the functionality of the injection nozzle.
  • the embodiment of the invention has the consequence that the coupling piston is driven by the actuator to the at least one injection hole, which allows a particularly compact design for the injection nozzle.
  • Such an insert part can be manufactured particularly easily with sufficient accuracy, which reduces the manufacturing costs for the injection nozzle.
  • a remindstellfe can be arranged in the cylinder chamber, which at one end on the coupling piston and the other at a bottom of the cylinder chamber supported. With the help of such a return spring can be biased to close the nozzle needle of the coupling piston with a defined restoring force in its initial position, which simultaneously leads to a defined pressure increase in the coupling space and thus in the control room. As a result, the forces acting in the closing direction on the nozzle needle can be increased.
  • the proposed return spring thus supports the closing movement of the nozzle needle.
  • An injector 1 comprises a nozzle body 2 in which an actuator 3 and a nozzle needle 4 are arranged.
  • the actuator 3 is preferably designed as a piezoelectric actuator 3, that is to say a piezo actuator 3 which increases its axial length when current is applied and if the actuator fails Electricity supply reduced again.
  • the nozzle needle 4 is used to control an injection of fuel through at least one injection hole 5, which is housed in a nozzle tip 6.
  • the injection nozzle 1 includes a plurality of injection holes 5, which may be arranged quasi star-shaped with respect to a longitudinal central axis 7 of the nozzle needle 4 and the injection nozzle 1.
  • the nozzle needle 4 cooperates with a needle seat 8.
  • the nozzle needle 4 In the closed state of the nozzle needle 4, this sits in its needle seat 8 and separates the at least one injection hole 5 of a unspecified here Fuel supply from, in which the fuel to be injected is provided under a relatively high injection pressure. In the open state, the nozzle needle 4 is lifted from the needle seat 8, whereby the at least one injection hole 5 is connected to the fuel supply. As a result, there is an injection of fuel into an injection chamber 9, which may be a combustion chamber or a mixture formation space.
  • the injection nozzle 1 is used for injecting fuel into the combustion chamber of a cylinder of a Brennkmfanaschme, which may be arranged in particular in a vehicle.
  • each cylinder of the internal combustion engine is assigned a separate injection nozzle 1.
  • a common fuel supply is provided for several, in particular for all, injection nozzles 1 of the internal combustion machine, which provides the fuel to be injected at the relatively high level of the injection pressure.
  • the nozzle needle 4 forms here a part of a needle assembly 10, which in addition to the nozzle needle 4 here also exemplarily a coupling rod 11 and a control piston 12 may have.
  • the individual components of the needle assembly 10 form a common hubver ause unit which is suitable at least for the transmission of compressive forces. It is in principle possible that two adjacent components of the needle assembly 10 only lie loosely against each other. It is also possible that two adjacent components of the needle assembly 10 are firmly connected to each other, for. B. by a weld or solder joint. It is also possible that at least two components of the needle assembly 10 are made in one piece from one piece.
  • the actuator 3 drives a piston rod 14 via a joint-like coupling point 13 and via this a coupling piston 15.
  • the coupling piston 15 limits a coupling space 16 at least partially.
  • This coupling space 16 communicates via a connection path 17 with a control chamber 18.
  • This control chamber 18 is at least partially delimited by the control piston 12 or by a control surface 19.
  • the control surface 19 is formed here on the control piston 12. It is also possible to arrange the control surface 19 directly on the nozzle needle 4 or on another component of the needle assembly 10.
  • the control surface 19 is arranged on the nozzle needle 4 or on the needle dressing 10 such that it faces away from the at least one injection hole 5. This means that a pressure prevailing in the control chamber 18 pressure acts on the control surface 19 so that it can initiate a force acting in the closing direction of the nozzle needle 4 force in the nozzle needle 4 and in the needle assembly 10. Furthermore, in the present invention, the arrangement of the coupling piston 15 relative to the coupling space 16 is selected such that the actuator 3, when actuated to open the nozzle needle 4, drives the coupling piston 15 such that a volume of the coupling space 16 increases.
  • the coupling piston 15 at least partially limits the coupling space 16 at a side 20 facing the at least one spray hole 5.
  • the coupling piston 15 has a coupling surface 21 facing away from the at least one spray hole 5, which is arranged in the coupling space 16 or partially delimits it.
  • the actuator 3 thus drives the coupling piston 15 in the direction of the at least one injection hole 5.
  • the coupling piston 15 is mounted in a cylinder space 22 adjustable in stroke.
  • a return spring 23 is arranged, which is also referred to below as the coupling piston return spring 23.
  • the coupling piston return spring 23 is supported in the axial direction at one end on the coupling piston 15 and at the other end on a base 24 of the cylinder chamber 22.
  • the cylinder chamber 22 is also connected in a manner not shown here to a leakage system, so that a stroke adjustment of the coupling piston 15, the volume in the cylinder chamber 22 can change without causing a significant pressure change in the cylinder chamber 22.
  • the cylinder chamber 22 is formed in an insert part 25 designed as a separate component, which is arranged axially between the actuator 3 and the nozzle needle 4 or needle assembly 10.
  • the insert 25 is supported in the embodiment shown here in the axial direction at one end to a part of the nozzle body 2 and the other end z. B. from a sealing plate 26 from.
  • the insert part 25 has on an end facing the actuator 3 an axially projecting, radially outwardly arranged annular collar 27 which is axially supported on the sealing plate 26, thereby axially between the sealing plate 26 and the insert part 25 of Coupling space 16 is formed.
  • the connection path 17 is integrated into the insert part 25.
  • the connection path 17 can be formed from two holes 28 and 29 communicating with one another, of which one 28 is connected to the coupling space 16 and the other 29 to the control space 18.
  • the piston rod 14 penetrates the sealing plate 26 centrally and is supported axially on the coupling piston 15. Again, it is in principle possible that piston rod 14 and coupling piston 15 only lie loosely against each other. Likewise, coupling piston 15 and piston rod 14 can be firmly connected to each other or made in one piece from one piece.
  • the piston rod 14 projects into the coupling space 16, d. H. the piston rod 14 passes through the coupling space 16 in the axial direction to the coupling piston 15. In this case, the piston rod 14 has at least within the coupling space 16 an outer cross section 30 which is smaller than an outer cross section 31 of the coupling piston 15.
  • the coupling surface 21 is realized or In this way, the dependence of the coupling space volume on the stroke position of the coupling piston 15 and the piston rod 14 is realized.
  • the piston rod 14 and / or the coupling piston 15 is / are cylindrical, in particular circular-cylindrical.
  • Fig. 1 can be arranged between the sealing plate 26 and a support plate 32 axially supported on the actuator 3, a further return spring 33, which is also referred to below as the actuator return spring 33.
  • the actuator return spring 33 is supported in the axial direction on the one hand on the support plate 32 and on the other hand on the sealing plate 26 and is thus supported on the insert member 25 on the nozzle body 2.
  • the actuator 3 is connected centrally via the coupling point 13 through the support plate 32 to the piston rod 14.
  • the control chamber 18 is formed axially between the insert part 25 and the control piston 12, wherein it is also enclosed here radially by a sleeve 34.
  • the control piston 12 is mounted adjustable in stroke.
  • the laying of the connection path 17 within the insert part 25 can advantageously be specifically realized in such a way that the connection path 17 opens here centrally via the bore 29 into the control space 18. In this way, a particularly uniform pressure build-up or pressure reduction in the control chamber 18 can be achieved in order to avoid lateral forces on the control piston 12 and thus on the needle assembly 10.
  • the injection nozzle 1 operates as follows:
  • the nozzle needle 4 is closed, d. H. the nozzle needle 4 is seated in the needle seat 8 and thus blocks the connection of the fuel supply to the at least one spray hole 5.
  • the same pressure prevails in the control chamber 18 and in the coupling chamber 16, in particular the crankshaft high pressure.
  • This high fuel pressure can be adjusted, for example, by a targeted and / or unavoidable leakage of the coupling space 16 and / or the control chamber 18 and / or the connection path 17 with respect to the fuel supply.
  • the needle return spring 35 also introduces a closing force into the needle assembly 10. Overall, the needle dressing 10 outweigh the forces acting in the closing direction forces.
  • the actuator return spring 33 has biased the actuator 3 in its shortened starting position.
  • the coupling piston return spring 23 keeps the coupling piston 15 biased against the force acting in the coupling space 16 force.
  • the actuator 3 In order to initiate an injection process through the at least one spray hole 5, the actuator 3 is actuated or activated, whereby this increases its length and thereby drives the coupling piston 15 axially via the piston rod 14 in the direction of the at least one injection hole 5.
  • the coupling surface 21 of the coupling piston 15 exposed to the coupling space 16 is adjusted relative to the coupling space 16 such that the volume of the coupling space 16 increases.
  • a pressure drop in the coupling space 16 is accompanied, which propagates via the connection path 17 into the control space 18. Due to the reduced pressure in the control chamber 18, the forces acting on the control surface 19 in the closing direction are reduced, so that now the forces acting in the opening direction predominate on the needle dressing 10. Consequently, the nozzle needle 4 lifts from its needle seat 8, which is the connects at least one injection hole 5 with the fuel supply and allows the injection process.
  • the actuator 3 is deactivated, whereby its length is reduced.
  • the tensioned by the opening process return springs 23, 33 and 35 can now unfold their restoring force with deactivated actuator 3 and drive back in the sequence the actuator and the coupling piston 15 and the nozzle needle 4 in the starting position.
  • Important for the closing operation of the nozzle needle 4 is that the coupling piston 15 driven by the coupling piston return spring 23, the volume of the coupling chamber 16 again reduced, which is accompanied by a corresponding increase in pressure in the coupling chamber 16 and thus in the control chamber 18.
  • the increased pressure in the control chamber 18 increases to a corresponding extent initiated via the control surface 19 in the needle assembly 10 closing forces.
  • the injection nozzle 1 according to the invention is thus controlled directly via the pressure or negative pressure at the control surface 19, which is variable by means of the actuator 3. It is noteworthy here that the hydraulically operating components of the injection nozzle 1 are maximally exposed to the injection pressure, since the pressure in the control chamber 18 is lowered to actuate the nozzle needle 4. As a result, the hydraulic components manufacturing technology can be manufactured with less effort. In particular, a lesser clearance and larger tolerances can be allowed, which has an advantageous effect on the manufacturing costs. Furthermore, there is no direct coupling between the nozzle needle 4 and the needle assembly 10 on the one hand and the coupling piston 15 on the other hand, which reduces adverse interactions between said components or eliminated.

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

Claims (8)

  1. Injecteur pour un moteur à combustion interne, notamment dans un véhicule automobile, comprenant
    - une aiguille d'injecteur (4) pour commander une injection de carburant à travers au moins un trou d'injection (5), et
    - un actionneur (3) pour entraîner un piston d'accouplement (15),
    - l'aiguille d'injecteur (4) ou un assemblage d'aiguille (10) comprenant l'aiguille d'injecteur (4) présentant une surface de commande (19) qui limite au moins en partie un espace de commande (18),
    - l'espace de commande (18) communiquant avec un espace d'accouplement (16),
    - le piston d'accouplement (15) limitant au moins en partie l'espace d'accouplement (16),
    - la surface de commande (19) étant disposée sur l'aiguille d'injecteur (4) ou l'assemblage d'aiguille (10) à distance de l'au moins un trou d'injection (5),
    - l'actionneur (3) entraînant le piston d'accouplement (15) pour ouvrir l'aiguille d'injecteur (4) de telle sorte qu'un volume de l'espace d'accouplement (16) soit accru,
    caractérisé en ce que
    le piston d'accouplement (15) présente une surface d'accouplement (21) opposée à l'au moins un trou d'injection (5), qui limite au moins en partie l'espace d'accouplement (16), et en ce que pour augmenter le volume de l'espace d'accouplement (16), l'actionneur (3) entraîne le piston d'accouplement (15) dans la direction de l'au moins un trou d'injection (5).
  2. Injecteur selon la revendication 1,
    caractérisé en ce que
    - le piston d'accouplement (15) est monté de manière réglable en hauteur dans un espace de cylindre (22),
    - en ce que l'espace de cylindre (22) est réalisé dans une pièce d'insertion (25) qui est disposée axialement entre l'actionneur (3) et l'aiguille d'injecteur (4) ou l'assemblage d'aiguille (10).
  3. Injecteur selon la revendication 2,
    caractérisé en ce
    qu'un ressort de rappel (23) est disposé dans l'espace de cylindre (22), et s'appuie à une extrémité contre le piston d'accouplement (15) et à l'autre extrémité contre une base (24) de l'espace de cylindre (22).
  4. Injecteur selon la revendication 2 ou 3,
    caractérisé en ce
    qu'un chemin de connexion (17) reliant par communication l'espace de commande (18) à l'espace d'accouplement (16) est réalisé dans la pièce d'insertion (25).
  5. Injecteur selon l'une quelconque des revendications 1 à 4,
    caractérisé en ce que
    l'actionneur (3) entraîne le piston d'accouplement (15) par le biais d'une tige de piston (14), qui traverse l'espace d'accouplement (16) jusqu'au piston d'accouplement (15) et dont la section transversale extérieure (30) exposée à l'espace d'accouplement (16) est inférieure à la section transversale extérieure (31) du piston d'accouplement (15) exposée à l'espace d'accouplement (16).
  6. Injecteur selon les revendications 2 et 5,
    caractérisé en ce que
    l'espace d'accouplement (16) est réalisé axialement entre la pièce d'insertion (25) et une plaque d'étanchéité (26) qui est traversée centralement par la tige de piston (14).
  7. Injecteur selon la revendication 6,
    caractérisé en ce que
    - la plaque d'étanchéité (26) s'appuie axialement sur la pièce d'insertion (25) et/ou
    - en ce qu'un autre ressort de rappel (33) s'appuie sur la plaque d'étanchéité (26), lequel s'appuie en outre directement ou indirectement sur l'actionneur (3).
  8. Injecteur selon l'une quelconque des revendications 1 à 7,
    caractérisé en ce
    qu'un chemin de connexion (17) reliant par communication l'espace de commande (18) à l'espace d'accouplement (16) est raccordé axialement et centralement à l'espace de commande (18).
EP05707910A 2004-04-08 2005-02-01 Injecteur Not-in-force EP1763628B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004017303A DE102004017303A1 (de) 2004-04-08 2004-04-08 Einspritzdüse
PCT/EP2005/050436 WO2005098229A1 (fr) 2004-04-08 2005-02-01 Injecteur

Publications (2)

Publication Number Publication Date
EP1763628A1 EP1763628A1 (fr) 2007-03-21
EP1763628B1 true EP1763628B1 (fr) 2010-06-16

Family

ID=34960325

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05707910A Not-in-force EP1763628B1 (fr) 2004-04-08 2005-02-01 Injecteur

Country Status (7)

Country Link
US (1) US20070221745A1 (fr)
EP (1) EP1763628B1 (fr)
JP (1) JP2006525456A (fr)
CN (1) CN1942667A (fr)
AT (1) ATE471450T1 (fr)
DE (2) DE102004017303A1 (fr)
WO (1) WO2005098229A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005015735A1 (de) 2005-04-06 2006-10-12 Robert Bosch Gmbh Brennstoffeinspritzventil
DE102009002554A1 (de) 2008-07-23 2010-01-28 Robert Bosch Gmbh Kraftstoffinjektor für ein Kraftstoffeinspritzsystem
DE102008035087B4 (de) * 2008-07-28 2015-02-12 Continental Automotive Gmbh Einspritzventil
DE102009046582A1 (de) * 2009-11-10 2011-05-12 Robert Bosch Gmbh Verfahren zum Herstellen eines Kraftstoffeinspritzventils und Kraftstoffeinspritzventil
DE102011081176A1 (de) * 2011-08-18 2013-02-21 Robert Bosch Gmbh Ventil zum Zumessen eines strömenden Mediums
DE102012220610B4 (de) * 2012-11-13 2015-04-02 Continental Automotive Gmbh Injektor
DE102012223934B4 (de) * 2012-12-20 2015-10-15 Continental Automotive Gmbh Piezoinjektor
DE102013212330A1 (de) * 2013-06-26 2014-12-31 Continental Automotive Gmbh Verfahren zum Herstellen von Injektoren, insbesondere Kraftstoffinjektoren, sowie Injektor
DE102013222504A1 (de) 2013-11-06 2015-05-07 Robert Bosch Gmbh Kraftstoffeinspritzventil für Brennkraftmaschinen
DE102014211334B3 (de) * 2014-06-13 2015-08-27 Continental Automotive Gmbh Verfahren zur Charakterisierung eines hydraulischen Koppelelementes eines Piezo-Injektors
DE102016220074B4 (de) * 2016-10-14 2023-02-02 Vitesco Technologies GmbH Piezo-Common-Rail-Injektor mit hydraulischem Spielausgleich über Bewegung des Ventilsitzes

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4022166A (en) * 1975-04-03 1977-05-10 Teledyne Industries, Inc. Piezoelectric fuel injector valve
JPS601369A (ja) * 1983-06-16 1985-01-07 Nippon Soken Inc 燃料噴射弁
DE19939520C2 (de) * 1999-08-20 2001-06-07 Bosch Gmbh Robert Einspritzsystem und Verfahren zum Betreiben eines Einspritzsystems
ES2280318T3 (es) * 2000-07-18 2007-09-16 Delphi Technologies, Inc. Inyector de combustible.

Also Published As

Publication number Publication date
ATE471450T1 (de) 2010-07-15
WO2005098229A1 (fr) 2005-10-20
JP2006525456A (ja) 2006-11-09
US20070221745A1 (en) 2007-09-27
CN1942667A (zh) 2007-04-04
DE502005009762D1 (de) 2010-07-29
DE102004017303A1 (de) 2005-10-27
EP1763628A1 (fr) 2007-03-21

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