EP1817492B1 - Pontage electrique dans des injecteurs de carburant - Google Patents

Pontage electrique dans des injecteurs de carburant Download PDF

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Publication number
EP1817492B1
EP1817492B1 EP05801699A EP05801699A EP1817492B1 EP 1817492 B1 EP1817492 B1 EP 1817492B1 EP 05801699 A EP05801699 A EP 05801699A EP 05801699 A EP05801699 A EP 05801699A EP 1817492 B1 EP1817492 B1 EP 1817492B1
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EP
European Patent Office
Prior art keywords
valve
contact
module
earth conductor
conductor
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
EP05801699A
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German (de)
English (en)
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EP1817492A1 (fr
Inventor
Michael Fleig
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
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Robert Bosch GmbH
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Filing date
Publication date
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Publication of EP1817492A1 publication Critical patent/EP1817492A1/fr
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Publication of EP1817492B1 publication Critical patent/EP1817492B1/fr
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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
    • F02M51/005—Arrangement of electrical wires and connections, e.g. wire harness, sockets, plugs; Arrangement of electronic control circuits in or on fuel injection apparatus
    • 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
    • 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
    • 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
    • F02M59/466—Electrically operated valves, e.g. using electromagnetic or 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
    • 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
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49405—Valve or choke making
    • Y10T29/49412—Valve or choke making with assembly, disassembly or composite article making

Definitions

  • fuel injectors which contain one or more electrically controllable valves.
  • an electrically controllable solenoid or piezoelectric valve can be provided for controlling a needle valve and thus for controlling the course of the injection.
  • Other valves can be used for example for a pressure boosting.
  • the electrical contacting of these valves often presents a challenge.
  • An injector according to the preamble of claim 1 is known from US 6565020 B1 known.
  • a fuel injector for injecting fuel into a combustion chamber of an internal combustion engine with the features of claim 1 is proposed, which avoids the disadvantages of the prior art described. Furthermore, a method for producing a fuel injector according to claim 10 is proposed.
  • the fuel injector has an injector body, at least one electrically controllable valve let into the injector body and at least one electrical injector body contact accessible from an outside of the injector body. At least one of the electrically controllable valves should have at least one electrical valve body contact.
  • a basic idea of the present invention is to use a solid conductor for the electrical connection between the at least one valve contact and the at least one injector body contact, which does not deform under the action of its own weight force in contrast to a simple cable or wire and, for example, over a solder joint Plug contacts can be contacted. Slight plastic deformations of the solid conductor under the action of its own weight and under additional force can be accepted when the shape of the solid conductor remains essentially unchanged.
  • the at least one solid conductor thus represents a kind of artificial extension of the electrical valve contacts.
  • the at least one solid conductor and the at least one electrical valve contact are connected via an electrically conductive connection and / or via at least one electrically conductive connection element.
  • the at least one connecting element is connected to the at least one solid conductor and the at least one electrical valve contact in each case via an electrically conductive connection.
  • fuel injectors can be realized in a simple manner, which can be dismantled or reassembled non-destructively into a plurality of individual parts.
  • the injector body contact and the at least one electrically controllable valve may be arranged in different individual parts, wherein the at least one solid conductor is reversibly connected to at least one injector body contact.
  • This connection can be made for example via a plug connection.
  • the solid conductor for example, at one end fixed or difficult to detachably connected to a valve contact and releasably connected to an injector body at another end.
  • the solid conductor can extend on the way from the valve contact to the injector body contact by further individual parts of the injector body, in particular by one or more Head of channels.
  • the solid conductor can be electrically insulated against the injector body, for example by means of a shrink tube.
  • the fuel injector described allows a much simplified compared to the prior art manufacturing process.
  • the described items are individually prepared and tested.
  • the at least one valve contact with a solid conductor fixed or difficult to be releasably connected again.
  • the items are connected to a single injector body, wherein the at least one solid conductor is reversibly connected to the at least one injector body contact.
  • FIG. 1 an overall view of an injector body 110 for a common rail injection system is shown.
  • the injector body 110 can be dismantled at parting lines 124, 126, 128 and 130 into substantially five functional modules 132, 134, 136, 138, 140: a control module 132, a sealing plate 134, a line connection module 136, a pressure booster module 138 and a nozzle module 140
  • Pressure translator module 138 essentially serves to translate a fuel pressure which is provided by an external pressure source, for example via a high-pressure common space, to the fuel injector (for example 1000 bar) into a second pressure (for example 2200 bar) two working pressures are available for the injection process.
  • the injector body 110 has two solenoid valves 111, 112: a first solenoid valve 111 arranged in the control module 132 for controlling the pressure transmission in the pressure booster module 138, and a second solenoid valve 112 arranged in the nozzle module 140 for controlling the actual injection process via a valve needle (not shown) ,
  • the solenoid valve 112 in the nozzle module 140 is electrically actuated via two electrical valve contacts 114.
  • the injector body 110 has at its upper end an electrical injector body contact 116 accessible from above.
  • the realization of a dismantling In the illustrated modular design of the injector body 110, the injector body 110 or a simple modular assembly consists in electrically connecting the valve contacts 114 to the injector body contact 116 in such a way that a simple assembly and disassembly of the injector body is ensured.
  • two conductor channels 120 are provided in this embodiment, which extend through the modules 138, 136 and 134.
  • the conductor channels 120 are formed by bores in the pressure booster module 138, in the line connection module 136 and in the sealing plate 134. When the injector body 110 is assembled, these bores are in each case flush at the parting lines 128 and 126, so that a single, continuous conductor channel 120 results.
  • the individual holes of the conductor channel 120 have in this embodiment in the individual modules 138, 136, 134 each have a straight course. A curved course of the holes can be realized with the inventive solution.
  • the bores in the individual modules 138, 136, 134 each have a different inclination to an injector axis 142.
  • the conductor channel 120 in the pressure booster module 138 has an inclination of 1 ° to the injector axis 142
  • the inclination in this embodiment in the line connection module 136 is 2.2 °.
  • This problem is inventively achieved in the illustrated embodiment, characterized in that the connection between the two electrical valve contacts 114 of the solenoid valve 112 and the injector body contact 116 partially via two solid conductors 118 takes place.
  • the solid conductors 118 extend through the two conductor channels 120 and connect the valve contacts 114 with electrical plug contacts 122, which in turn via an electrical connection 144 (for example, two each at one end with an electrical connection Plug contact 122 and at another end to the injector body contact 116 soldered cables) are connected to the injector body contact 116.
  • the solid conductors 118 are fixed or detachably connected electrically to the valve contacts 114 (see below).
  • connection of the solid conductors 118 with the plug contacts 122 is reversible, so that this connection can be made during assembly of the injector body 110 by simply pressing in the solid conductors 118 into the plug contacts 122.
  • the solid conductors 118 can be easily removed again from the plug contacts 122 and thus the injector body 110 can be disassembled again without unsoldering of electrical connections.
  • the solid conductors 118 are stiff enough that they on the one hand do not change their shape substantially under their own weight and thus thread easily through the conductor channels 120 with their different inclinations to Injektorachse 142 and plug into the plug contacts 122.
  • the solid conductors should have a certain plasticity, so that no mechanical stresses occur at the transition between sections of the conductor channels 120 with different angles of inclination.
  • the term "solid conductor” does not necessarily restrict the selection of materials to solid materials, but it is also possible, for example, to use waveguides (tubes) as solid conductors 118, provided they have sufficient mechanical rigidity.
  • the solid conductors 118 CuSn6 with a Brinell hardness between 80 and 90 HB as a material, which is otherwise used for example as welding filler.
  • a material which is otherwise used for example as welding filler.
  • These materials meet the above requirements for hardness and plasticity and are also easily connected by welding with the valve contacts 114.
  • the hardness of the materials should be between 50 and 100 HB, preferably between 60 and 95 HB and particularly advantageously between 75 and 90 HB.
  • the solenoid valve 112 is shown and two solid conductors 118, each 127 mm in length, which are connected to the valve contacts 114.
  • the connection between the solid conductors 118 and the valve contacts 114 is encapsulated in this case with an electrically insulating thermoplastic 210 and therefore not visible in this perspective view.
  • PPS or PA in particular glass fiber-filled PPS or PA (eg PPS GF 30 or PA 66 GF 30), can be used as the thermoplastic material, among other alternatives, whereby glass fiber filling further enhances the mechanical stability of the compound.
  • the electrically insulating thermoplastic 210 increases the dimensional stability of the connections between the valve contacts 114 and the solid conductors 118.
  • the solid conductors 118 in this embodiment are largely wrapped with shrink tubing 212.
  • the shrink tubing 212 electrically insulates the solid conductors 118 against the walls of the filer channels 120 of the injector body 110.
  • the shrink tubing 212 in order to save costs, is not shrunk completely onto the solid conductors 118, but only in some sections.
  • the shrink tubing 212 extends upwardly from the electrically insulating thermoplastic 210.
  • the electrical insulation in particular the heat-shrinkable tube 212, ends in each case below the upper ends 214 of the solid conductors 118, so that the upper ends 214 of the solid conductors 218 are not enveloped in an electrically insulating manner and can be plugged into the plug contacts 122 in an electrically connecting manner.
  • an electrically conductive connection between the valve contacts 114 and the injector body contact 116 can be produced without a complex soldering or welding process.
  • the injector body 110 can again be easily dismantled for maintenance purposes, wherein the plug connection 122 is simply separated again from the solid conductors 118 by the action of force. Unsoldering of the compound is not required since the compound is reversible.
  • an embodiment of the connections between the valve contacts 114 of the solenoid valve 112 and the solid conductors 118 darg Marie is darg Episode in which the valve contacts 114 and the solid conductors 118 are connected directly by welded joints 310.
  • the upper ends of the valve contacts 114 are bent at right angles, as are the lower ends of the solid conductors 118. The bent ends are brought to overlap and each welded (cohesive connection). Alternatively, however, non-positive or positive connections can be used.
  • This welded connection 310 allows a cost-effective connection between the solid conductors 118 and the valve contacts 114, since no additional connecting elements are required. However, in this embodiment, in the manufacture of the connections first a bending of the ends and then a welding required.
  • thermoplastic, electrically insulating plastic extrusion 210 (see FIG. 2 ), which in the embodiment according to FIG. 3 can be mounted to electrically isolate the joints and mechanically stabilize the connection 310.
  • the embodiment according to FIG. 3 is an example of a direct connection of the valve contacts 114 with the solid conductors 118.
  • the valve contacts 114 may be connected to the solid conductors 118 via electrically conductive connecting elements 410.
  • Examples of such electrically conductive connecting elements 410 are in the FIGS. 4 to 8 shown.
  • one end of an electrically conductive connecting element 410 is fixedly or detachably connected to a valve contact 114 and another end of the electrically conductive connecting element 410 with one end of a solid conductor 118.
  • This connection can in turn be positive, non-positive or cohesive, but to pay attention is that the solid conductor 118 should not be able to change its orientation relative to the valve contact 114 substantially. This was above based on the FIG. 2 already described, and contributes to the fact that the individual modules 132, 134, 136, 138, 140 of the injector body 110 are easier to plug together.
  • FIG. 4 For example, one possible embodiment of a connection between an electrically conductive connection element 410 and either one end of a valve contact 114 or one end of a solid conductor 118 is shown, wherein the electrically conductive connection is effected by means of a positive connection method.
  • the electrically conductive connecting element 410 has a bore 412 at one end.
  • the bore 412 has a diameter of 2.5 mm.
  • plastically deformable electrically conductive tongues 414 In the bore 412 extend, distributed symmetrically along the circumference of the bore 412, plastically deformable electrically conductive tongues 414.
  • the tongues 414 extend so far into the bore 412 that in this embodiment, a light interior with a diameter of 0.9 mm remains ,
  • the tongues 414 are plastically deformable so that one end of a solid conductor 118 or a valve contact 114 can be inserted into the bore 412.
  • the tongues 414 deform according to the direction of insertion of the solid conductor 118 or of the valve contact 114.
  • the tongues 414 form barbs, so that the solid conductor 118 or the valve contact 114, once inserted into the bore 412, only can be removed under this greatly increased effort again from this.
  • the tongues 414 provide an electrically conductive connection between the solid conductor 118 and the valve contact 114 and the electrically conductive connecting element 410 ago.
  • FIG. 5 is one too FIG. 4 Alternative embodiment of a connection between a connecting element 410 and a solid conductor 118 and a valve contact 114 shown.
  • it is a ram contact, in which one end of the solid conductor 118 and the valve contact 114 can be introduced into a groove 510 at one end of the electrically conductive connection 410 under pressure.
  • the groove has a region 512 with plastically deformable serrations and a widened insertion region 514 with bevelled edges. If one end of the solid conductor 118 or of the valve contact 114 is inserted or driven into the groove 510 under an increased force, the teeth deform plastically in region 512.
  • FIGS. 6 and 7 Possible embodiments of the connection between a valve contact 114 and a solid conductor 118 are shown by way of example.
  • the exemplary embodiments show that the possible connections between solid conductor 118 or valve contact 114 and the electrically conductive connection element 410 can be combined as desired. So is in FIG. 6 an end of a valve contact 114 by means of a frictional connection 610 according to the in FIG FIG. 4 illustrated embodiment, electrically conductively connected to the electrically conductive connecting element 410. Furthermore, at the other end, one end of the solid conductor 118 is conductively connected to the connection element 410 via an electrically conductive plug connection 612.
  • This plug-in connection 612 can be released again by the application of force, but the stability of the connection 612 between the solid conductor 118 and the valve contact 114 is ensured to such an extent that the solid conductor 118 can not fall out of the plug connection 612 again due to its own weight.
  • valve contact 114 is wrapped in this embodiment by an electrically insulating plastic 210.
  • This enclosure which has already been described above, can be done in particular by an injection molding process.
  • FIG. 7 is one too FIG. 6 shown alternative preferred embodiment, in which both the connection of the valve contact 114 with the electrically conductive connecting element 410 and for connecting one end of a solid conductor 118 with the connecting element 410 positive connections according to FIG. 4 be used. Also in this embodiment, the entire connection is encapsulated by an electrically insulating thermoplastic 210. In contrast to the connection 612 in the embodiment according to FIG. 6 However, after encapsulation no destructive separation of the solid conductor 118 from the electrically conductive connection element 410 is possible. The remaining function of the embodiment according to FIG. 7 However, it is identical to the operation of the embodiment according to FIG. 6 ,
  • FIG. 8 is a perspective view of another possible embodiment of the connection between the valve contacts 114 and the solid conductors 118 shown.
  • the connecting elements 410 each have at one end a positive connection 610 according to the in FIG. 4 illustrated embodiment.
  • the connecting elements 410 a RammKey ist 810 according to the in FIG. 5 illustrated embodiment, via which the connecting elements 410 can be connected to the ends of the solid conductors 118.
  • the entire connection is encapsulated by an electrically insulating thermoplastic 210, but in this embodiment all contacts are combined by a single encapsulation 210.
  • the remaining operation of the embodiment according to FIG. 8 is identical to the embodiments according to the FIGS. 6 and 7 ,
  • FIG. 9 an inventive method for producing a fuel injector is shown.
  • solid conductors 118 and connections according to the embodiments shown above or similar compounds of the invention are used.
  • the illustrated method steps need not necessarily be performed in the order shown.
  • Various process steps can also be performed simultaneously, and additional, in FIG. 9 not shown process steps are performed.
  • a first module of a fuel injector for example a control module 132, is manufactured.
  • This first module has at least one externally accessible injector body contact 116.
  • the injector body contact 116 is electrically conductively connected to an electrical plug contact 122.
  • a second module for example a nozzle module 140, is produced, which has at least one electrically controllable valve 112. Furthermore, the electrically controllable valve 112 has electrical valve contacts 114.
  • the at least one electrical valve contact 114 is connected to at least one solid conductor 118.
  • the solid conductor 118 should have the properties described above.
  • the connection between the solid conductor 118 and the valve contact 114 takes place in each case directly or via an electrically conductive connecting element 410 as described above via one of the connections 310,610,612,810 according to the invention.
  • a fourth method step 916 the two modules 132, 140 are then connected directly or indirectly to a single injector body.
  • additional modules 134, 136, 138 can be introduced (see above), wherein the solid conductors 118 are guided in particular by conductor channels 120.
  • the at least one solid conductor 118 is reversibly connected directly or indirectly (eg via plug contacts 122 and an additional electrical connection 144) to the at least one injector body contact 116.
  • the described method of manufacturing the fuel injectors represents a significant improvement over conventional methods in which electrical cables are used to connect between the valve contacts 114 and the injector body contacts 116. Elaborate soldering processes and tedious passage of the cables through the individual segments of the injector body 110 are 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 (10)

  1. Injecteur de carburant pour injecter du carburant dans une chambre de combustion d'un moteur à combustion interne,
    l'injecteur de carburant pouvant être décomposé et remonté sans difficultés, à partir d'au moins trois modules (132, 134, 136, 138, 140) et comportant les moyens suivants :
    a) un corps d'injecteur (110),
    b) au moins un contact de corps d'injecteur (116) électrique, accessible d'un côté extérieur du corps d'injecteur (110), au moins ce contact de corps d'injecteur (116) étant installé sur ou dans le premier module (132) et
    c) au moins une vanne (112) à commande électrique intégrée dans le corps d'injecteur (110),
    - au moins cette vanne à commande électrique (112) comporte au moins un contact de vanne (114), électrique,
    - au moins cette vanne à commande électrique (112) est installée dans un second module (140) différent du premier module (132),
    - au moins le contact de vanne électrique (114) et au moins un contact de corps d'injecteur électrique (116) sont reliés au moins en partie par au moins un conducteur massif électrique (118), et au moins ce conducteur massif (118) traverse au moins un canal de conducteur (120),
    - au moins ce conducteur massif (118) est relié directement ou indirectement de façon réversible et de manière électroconductrice avec au moins un contact de corps d'injecteur (116),
    - au moins ce conducteur massif (118) et au moins un contact de vanne électrique (114) sont reliés par une liaison électroconductrice (310) et/ou par au moins un élément de liaison (410) électroconducteur, et
    - au moins cet élément de liaison électroconducteur (410) peut être relié à au moins un conducteur massif (118) et au moins un contact de soupape électrique (114) est relié chaque fois par une liaison électroconductrice (610, 612 ; 810),
    caractérisé en ce que
    - au moins un conducteur massif (118) est de forme pratiquement stable sous l'effet de son propre poids,
    - au moins un troisième module (134, 136, 138) est prévu entre le premier et le second module (132, 140),
    - le troisième module (134, 136, 138) comporte au moins un canal conducteur (120) et
    - au moins un conducteur massif (118) traverse au moins un canal conducteur (120).
  2. Injecteur de carburant selon la revendication précédente,
    caractérisé en ce qu'
    au moins une vanne à commande électrique (111, 112) comporte une électrovanne.
  3. Injecteur de carburant selon l'une des revendications précédentes,
    caractérisé en ce que
    le second module dans le module d'injecteur (140) est une soupape de buse (112) à commande électrique.
  4. Injecteur de carburant selon l'une des revendications précédentes,
    caractérisé en ce qu'
    au moins un conducteur massif (118) est isolé électriquement par au moins une enveloppe à isolation électrique (212), de préférence un tuyau rétractable (212) rétracté, de préférence totalement ou partiellement, sur au moins un conducteur massif (118), pour assurer l'isolation électrique vis-à-vis d'un canal de conducteur (120).
  5. Injecteur de carburant selon l'une des revendications précédentes,
    caractérisé en ce que
    - au moins un conducteur massif (118) et au moins un contact de soupape électrique (114) sont reliés par au moins un élément de liaison (410),
    - au moins un élément de liaison (410) comporte au moins une zone de contact de déformation (414, 512) et
    - une extrémité d'au moins un conducteur massif (118) et/ ou une extrémité d'au moins un contact de soupape (114) peuvent être emmanchées dans la zone de contact (114, 512),
    la zone de contact de déformation (414, 512) est déformable plastiquement, totalement ou partiellement,
    et l'enlèvement de l'extrémité d'au moins un conducteur massif (118) ou d'au moins un contact de soupape (114) étant rendu difficile et une liaison électroconductrice (610, 612) est réalisée entre au moins un conducteur massif (118) et au moins un contact de soupape (114) et au moins un élément de liaison (410).
  6. Injecteur de carburant selon l'une des revendications précédentes,
    caractérisé en ce qu'
    au moins une liaison (610, 612 ; 810) entre au moins un conducteur massif (118) et au moins un élément de liaison (410) et/ ou au moins une liaison (610, 612 ; 810) entre au moins un contact de soupape (114) et au moins un élément de liaison (410) et/ ou au moins une liaison (310) entre le conducteur massif (118) et au moins un contact de soupape (114) et/ ou au moins un élément de liaison (410) sont entourés totalement ou partiellement d'une matière plastique (210) électro-isolante.
  7. Injecteur selon la revendication précédente,
    caractérisé en ce que
    la matière plastique électro-isolante (210) comporte une matière plastique susceptible d'être injectée.
  8. Injecteur selon l'une des revendications précédentes,
    caractérisé en ce qu'
    au moins un conducteur massif (118), comporte au moins l'un des matériaux suivants : CuAl8, CuAl8Ni2, CuAl8Ni6, CuAl9Fen CuMn13Al7, CuSi3, CuSn, cuivre ou mercure.
  9. Injecteur selon l'une des revendications précédentes,
    caractérisé en ce qu'
    au moins un conducteur massif (118) comporte au moins un matériau ayant une dureté Brinell comprise entre 50 et 100 HB.
  10. Procédé de fabrication d'un injecteur de carburant comprenant les étapes suivantes :
    a) on fabrique un premier module (132) de l'injecteur de carburant, le premier module (132) ayant au moins un contact de corps d'injecteur (116),
    b) on fabrique un second module (140), le second module (140) ayant au moins une vanne à commande électrique (112) avec au moins un contact de vanne électrique (114),
    c) on relie au moins un contact de vanne électrique (114) avec au moins un conducteur massif (118) électrique, pratiquement de forme stable, sous son propre poids, par une liaison électroconductrice (310) et/ou par au moins un élément de liaison électroconducteur (410), et
    au moins un élément de liaison (410) est relié à au moins à un conducteur massif (118) et au moins un contact de vanne électrique (114) par chaque fois une liaison électroconductrice (610, 612 ; 810), et
    d) les deux modules (132, 140) sont reliés pour former un corps d'injecteur (100),
    au moins un conducteur massif (118) étant relié de façon réversible, directement ou indirectement à au moins un contact de corps d'injecteur (16), et
    au moins un troisième module (134, 136, 138) est prévu entre le premier et le second module, le troisième module (134, 136, 138) ayant au moins un canal de pilotage (120) traversant le conducteur massif (118).
EP05801699A 2004-11-24 2005-10-31 Pontage electrique dans des injecteurs de carburant Not-in-force EP1817492B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004056667A DE102004056667A1 (de) 2004-11-24 2004-11-24 Elektrische Überbrückung in Kraftstoffinjektoren
PCT/EP2005/055652 WO2006056520A1 (fr) 2004-11-24 2005-10-31 Pontage electrique dans des injecteurs de carburant

Publications (2)

Publication Number Publication Date
EP1817492A1 EP1817492A1 (fr) 2007-08-15
EP1817492B1 true EP1817492B1 (fr) 2008-07-02

Family

ID=35447479

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05801699A Not-in-force EP1817492B1 (fr) 2004-11-24 2005-10-31 Pontage electrique dans des injecteurs de carburant

Country Status (6)

Country Link
US (1) US8322629B2 (fr)
EP (1) EP1817492B1 (fr)
JP (1) JP4571983B2 (fr)
AT (1) ATE399934T1 (fr)
DE (2) DE102004056667A1 (fr)
WO (1) WO2006056520A1 (fr)

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US8074625B2 (en) 2008-01-07 2011-12-13 Mcalister Technologies, Llc Fuel injector actuator assemblies and associated methods of use and manufacture
EP2080892A1 (fr) * 2008-01-16 2009-07-22 Delphi Technologies, Inc. Injecteur de carburant
CN102713236B (zh) * 2009-08-27 2015-03-11 麦卡利斯特技术有限责任公司 燃料喷射器致动器组件及使用和制造的相关方法
JP5734294B2 (ja) * 2009-08-27 2015-06-17 マクアリスター テクノロジーズ エルエルシー 燃料噴射器
CN104728001A (zh) * 2009-08-27 2015-06-24 麦卡利斯特技术有限责任公司 燃料喷射器致动器组件及使用和制造的相关方法
DE102009029529A1 (de) * 2009-09-17 2011-03-24 Robert Bosch Gmbh Magnetventil mit direkt kontaktierter Steuereinheit
HUE025828T2 (en) * 2010-10-20 2016-05-30 Delphi Int Operations Luxembourg Sarl Improved fuel injector
US20140217204A1 (en) * 2011-09-08 2014-08-07 Inernational Engine Intellectual Property Company, Llc Fuel injector solenoid and terminal assembly
US20140131466A1 (en) 2012-11-12 2014-05-15 Advanced Green Innovations, LLC Hydraulic displacement amplifiers for fuel injectors
US9309846B2 (en) 2012-11-12 2016-04-12 Mcalister Technologies, Llc Motion modifiers for fuel injection systems
GB201408060D0 (en) * 2014-05-07 2014-06-18 Delphi Int Operations Lux Srl Connector assembly for a fuel injector
DE102014216834A1 (de) * 2014-08-25 2016-02-25 Robert Bosch Gmbh Kraftstoffinjektor
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US4434765A (en) * 1981-10-30 1984-03-06 Colt Industries Operating Corp. Fuel injection apparatus and system
US4725041A (en) * 1984-04-16 1988-02-16 Colt Industries Inc Fuel injection apparatus and system
DE3800203C2 (de) * 1988-01-07 1997-08-14 Atlas Fahrzeugtechnik Gmbh Kraftstoffeinspritzventil
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GB2332476B (en) * 1997-12-19 2002-01-16 Caterpillar Inc Fuel injector with solenoid and terminal assemblies
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DE10317148B4 (de) * 2003-04-14 2020-10-01 Robert Bosch Gmbh Brennstoffeinspritzventil

Also Published As

Publication number Publication date
DE102004056667A1 (de) 2006-06-01
US20080185461A1 (en) 2008-08-07
JP4571983B2 (ja) 2010-10-27
ATE399934T1 (de) 2008-07-15
EP1817492A1 (fr) 2007-08-15
US8322629B2 (en) 2012-12-04
WO2006056520A1 (fr) 2006-06-01
DE502005004592D1 (de) 2008-08-14
JP2008520888A (ja) 2008-06-19

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