EP0876552B1 - Dispositif distributeur pour systemes d'injection de carburant - Google Patents

Dispositif distributeur pour systemes d'injection de carburant Download PDF

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Publication number
EP0876552B1
EP0876552B1 EP97942769A EP97942769A EP0876552B1 EP 0876552 B1 EP0876552 B1 EP 0876552B1 EP 97942769 A EP97942769 A EP 97942769A EP 97942769 A EP97942769 A EP 97942769A EP 0876552 B1 EP0876552 B1 EP 0876552B1
Authority
EP
European Patent Office
Prior art keywords
distributor device
fuel injection
gas
supply line
gas supply
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP97942769A
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German (de)
English (en)
Other versions
EP0876552A1 (fr
Inventor
Eckhard Bodenhausen
Thomas Gregorius
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
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Filing date
Publication date
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Publication of EP0876552A1 publication Critical patent/EP0876552A1/fr
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Publication of EP0876552B1 publication Critical patent/EP0876552B1/fr
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
    • F02M51/005—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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/04—Injectors peculiar thereto
    • F02M69/047—Injectors peculiar thereto injectors with air chambers, e.g. communicating with atmosphere for aerating the nozzles
    • 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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/08—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by the fuel being carried by compressed air into main stream of combustion-air
    • 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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44

Definitions

  • the invention relates to a distributor device for fuel injection systems from Internal combustion engines for gas supply and electrical contacting of at least two for the injection of a fuel-gas mixture Fuel injectors according to the genus of the main claim.
  • a distribution device for Fuel injection systems in which on a gas supply line for common gas supply to the fuel injectors several sockets Inclusion of plugs arranged on the fuel injection valves are.
  • the gas supply line has connectors with one in the Supply opening of the gas supply line opening branch openings. Gas inlet channels of the fuel injection valves are in the branch openings insertable.
  • a socket strip extends parallel to the gas supply line which the sockets for electrical contacting of the fuel injection valves are arranged.
  • a fuel distributor for the supply of the Fuel to the fuel injectors.
  • the sockets to be plugged on are not integrated on the fuel distributor, but are via external cables with those running in the contact strip Supply lines connected. The connector is connected to the sockets therefore not simultaneously with the connection of the fuel injectors with the Fuel supply line, but requires an additional assembly step.
  • the distribution device according to the invention with the characterizing features of Main claim has the advantage that a simple, inexpensive and easy to handle gas supply with integrated electrical contact from Fuel injectors for injecting a fuel-gas mixture is guaranteed.
  • the distribution device is a very compact component that is very easy to assemble and disassemble.
  • disassembling the Distribution device is the locking connection of the socket with the plug of the associated fuel injector by releasing a locking spring Approved.
  • An actuator for releasing the locking spring is included arranged on the side of the gas supply line facing away from the sockets. This has the advantage that the accessibility of the actuator by Fuel injector is not hindered.
  • the arrangement of the Actuator directly on the gas supply line has the other Advantage that the actuator in the immediate vicinity of the connection of Gas inlet channel of the fuel injector with the associated connector the gas supply line is located when dismantling the distribution device must be solved at the same time. In this way, the connection between the Socket and the plug on the one hand and between the gas inlet channels and the Distribution device on the other hand can be solved at the same time with just one hand movement which significantly simplifies handling.
  • the connecting pieces of the gas supply line each have sealing bodies made of an elastic material, which the gas inlet channels the fuel injectors after insertion into the connectors at least partially enclose radially.
  • Two functions are achieved at the same time, namely a sealing effect on the one hand and due to the elastic design of the Sealing body a tolerance compensation of the distance between the gas inlet channel and the connector on the other.
  • This tolerance compensation is special in practice Importance since the manufacture of the fuel injectors as well as the manufacture of the distribution facilities within very small tolerances Are subject to fluctuations.
  • the electrical supply lines can be particularly advantageously on the outside Wall of the gas supply channel are performed, including special clamping elements can be provided. If an electrical supply line, e.g. the Earth lead, to be connected to all sockets, can be used to accommodate the Branches of this common electrical supply line trough-shaped Elements can be arranged on the distributor device, which after the manufacture of the electrical connection for branching with a hardening synthetic resin are pourable. The branches are thereby both advantageously mechanically fixed as well as electrically insulated.
  • One for Gas supply to the respective fuel injector 2 necessary connection of Distribution device I and fuel injector 2 is by one Gas injection body 3 largely surrounding fuel injector 2 guaranteed.
  • The, for example, elongated distributor device 1 has one of the Number of fuel injectors to be supplied with a gas corresponding to 2 Number of with a constant distance from each other along one Longitudinal distribution axis 5, which runs perpendicular to the plane of the drawing in FIG. 1 and in FIG. 4 is shown, trained connectors 7, with which the connection to Gas enclosure body 3 can be produced.
  • the connectors 7 of Distribution device 1 each extend along a gas inlet channel axis 8 for example perpendicular to the longitudinal axis 5 of the distributor device 1 runs. 4 shows the elongated shape of the distributor device 1 and the Arrangement of the connectors 7 particularly clearly.
  • the fuel injection valve 2 extends together with the gas enclosing body 3 along a longitudinal valve axis that is not perpendicular to the gas inlet channel axis 8 9, wherein the gas enclosing body 3 at least one valve end 10 of the Fuel injector 2 includes.
  • the gas enclosing body 3 is one Gas inlet channel 13, which, like the connector 7 of the distributor device 1 is formed concentrically to the gas inlet channel axis 8, and a tubular stepped enclosure 14, the fuel injector 2 radially through a surrounds much of its axial extent.
  • the following short one Description of the fuel injection valve 2 is only to be understood as an example, since completely different types of valves, which are to be gas-enclosed, with the Gas enclosure body 3 can be equipped and with the distributor device according to the invention 1 can be coupled.
  • the u.a. shown, for example, electromagnetically actuated Fuel injector 2 has as part of a valve housing up to Valve end 10 extending nozzle body 18.
  • nozzle body 18 In the nozzle body 18 is one stepped longitudinal bore 19 formed concentrically with the valve longitudinal axis 9 runs and in which, for example, a needle-shaped valve closing part 21 is arranged.
  • the valve closing part 21 has, for example, two guide sections that together with the wall of the longitudinal bore 19 of the nozzle body 18 of the guide serve the valve closing part 21.
  • the longitudinal bore 19 of the nozzle body 18 points in its downstream end converges towards the fuel flow frustoconical tapered fixed valve seat 27 with a Fuel flow direction truncated conical sealing section 28 of the Valve closing part 21 together forms a seat valve.
  • valve closing part 21 At its sealing section 28 The opposite end is the valve closing part 21 with a tubular armature 30 connected, with a partially surrounding the armature 30 in the axial direction Solenoid coil 31 and an armature 30 on the fixed valve seat 27 facing away Opposite tubular inner pole 32 of the fuel injection valve 2 interacts.
  • a return spring 33 At the end of the valve closing part 21 connected to the armature 30 is a return spring 33, which strives to close the valve closing part 21 in the direction fixed valve seat 27 to move.
  • the spray hole disk 38 has, for example, two or four spray openings 39 through which the lifted valve closing part 21 flowing past the valve seat 27 and into one end channel 40 of longitudinal bore 19 facing spray openings 39 Fuel is sprayed.
  • the valve housing of the fuel injection valve 2 also includes, for example formed from a ferromagnetic material valve jacket 43, the Magnetic coil 31 surrounds radially and which extends axially from the inner pole 32 to Nozzle body 18 extends and is connected to both components.
  • the inner pole 32 and the valve jacket 43 are at least partially in the axial direction enclosed by a plastic sheath 45.
  • An electrical connector 47 about the electrical contacting of the solenoid 31 and thus its excitation takes place, is formed together with the plastic sheath 45, for example.
  • the connector 47 made of plastic includes, for example, two metallic ones Contact pins 48, which are directly connected to the winding of the solenoid 31 stand.
  • the contact pins 48 protrude from and surround the magnet coil 31
  • Plastic existing coil carrier 49 out and are largely made of plastic molded. Only at their pin end 50 are the contact pins 48 exposed, so that one Plug connection with a corresponding socket 78 of the distribution device 1 is possible.
  • the surrounding jacket 14 of the gas enclosing body 3 is at its upper, the Plug 47 facing end 55 firmly and tightly with the fuel injector 2 connected and includes the valve jacket 43 radially in the area of the Connector 47 towards the end of the bobbin 49.
  • the fixed connection between the gas containment body 3 and the fuel injection valve 2 for example by pressing on and / or ultrasonically welding the surrounding jacket 14 of the gas enclosing body 3 with its end 55 on the circumference of the valve jacket 43 of the fuel injector 2, without the need for a sealing element.
  • the gas encasing sleeve 58 surrounds at least partially axially with a cylinder part 59 and with a bottom part 60 at least partially radially the valve end 10 of the Fuel injector 2.
  • the Gas enclosure sleeve 58 in two parts with an inner and an outer pot for example made of sheet metal or plastic.
  • the outer pot serves mainly the seal in the gas containment body 3 while the inner pot by bracket sections 62 projecting from the cylinder part 59 to the nozzle body 18 Alignment function and by a protruding from the bottom part 60 to the spray plate 38
  • Radial section 63 has a gas metering function.
  • a gas ring gap 64 of the spacer elements, for example, touching through the sprayed disk 38, such as for example pimples.
  • the gas encasing sleeve 58 Through the gas inlet duct 13 The gas thus passes through the wall of the cylinder part 59 of the interior Pot and the circumference of the nozzle body 18 of the fuel injector 2 in radial direction limited gas ring channel 66 up to the gas ring gap 64.
  • the axial close, radially between the spray plate 38 and the radial portion 63 of the Bottom part 60 formed gas ring gap 64 serves to supply the gas to the the spray orifices 39 dispensed fuel and for metering the gas. Due to the small axial extent of the narrow gas ring gap 64 in the direction of Valve longitudinal axis 9, the supplied gas is greatly accelerated and atomized Fuel particularly fine, so that the pollutant emission of the internal combustion engine is reduced. The fuel-gas mixture ultimately passes through the Passage openings 65 from the gas containment sleeve 58 and thus from the Fuel injector 2 off.
  • valve longitudinal axis 9 and the gas inlet channel axis 8 create an acute angle locked in.
  • the angle of Gas inlet channel 13 to the valve longitudinal axis 9 in the case of various gas enclosing bodies 3 can be varied.
  • the gas enclosing body 3 is located axially and radially on the gas inlet channel 13 subsequent surrounding jacket 14 similar to the outer contour of the Fuel injector 2 formed.
  • the gas inlet channel 13 and the Surrounding jacket 14 are made of a plastic that has a high temperature and has dimensional stability, using ultrasonic welding as a joining process to be able to use.
  • a sealing ring 68 is in a between the gas inlet channel 13 and the end 56 on the surrounding jacket 14 provided annular groove 69. It serves for sealing between the circumference of the gas encasing body 3 and one Not shown valve holder, for example on the intake manifold Internal combustion engine can be formed.
  • the invention has Distribution device 1 a extending along the longitudinal axis 5 of the distributor Gas supply line 70 in which one is also along the Distributor longitudinal axis 5 extending supply opening 71 is formed.
  • the Cross section of the supply opening 71 is in the embodiment in the form of a Shaped circular segment; however, other cross-sectional configurations are also shown Supply opening 71, in particular in the form of a full circle, is conceivable.
  • the necessary cross-sectional area of the supply opening is dependent on the number of supplying fuel injectors 2 and the amount of needed Gas volume dependent.
  • the for connection to the gas inlet channels 13 of the Fuel injection valves 2 serving connecting pieces 7 show in the illustrated Embodiment a perpendicular to the wall of the gas supply line 70 extending and preferably revolving around the gas inlet channel axis 8 Holding section 72 and also preferably around the gas inlet channel axis 8 circumferential support section 73.
  • the holding section 72 serves to receive an im Embodiment substantially hollow-cylindrical sealing body 74, which has a groove 75 in the region of the holding section 72, into which the Holding portion 72 engages.
  • the sealing body 74 is preferably made of one elastic material, for example rubber, and is therefore in the assembly and Disassembly can be deformed elastically.
  • the gas inlet channel 13 has at least one locking element in the form of a radial one Bulge 90, which is sawtooth-shaped in the exemplary embodiment and extending along the gas inlet channel axis 8 in the direction of the longitudinal axis 9 of the Fuel injector 2 initially expanded continuously, then abruptly rejuvenate.
  • the sealing body 74 has a corresponding, annular circumferential Slot 76 on.
  • the bulge 90 and the groove 76 can also be part-circular or wavy be formed or be provided with radii in some other way.
  • the Gas inlet channel 13 can axially in the area of the sealing body 74 with respect to the Gas inlet channel axis 8 offset, sawtooth-shaped bulges 90 have, each with axially offset, corresponding annular grooves of the Cooperate sealing body 74. In this way, the pull-off force can be used if necessary be further increased.
  • the bushings are preferred 78 in one piece with the gas supply line 70, for example as a plastic injection-molded part educated. However, it is also conceivable to separate the bushings 78 from the To produce gas supply line 70 and the gas supply line 70 with the To connect bushings 78 subsequently, for example by welding.
  • the one-piece training has the advantage in terms of production technology that the training the gas supply line 70 and the bushings 78 in a single operation A common plastic injection mold can be used.
  • each contact spring 79 is electrical with an associated connection element 80 connected, which is angled at right angles in the illustrated embodiment.
  • connection spring 79 and an associated connection element 80 are provided, which are perpendicular to Drawing plane are offset from each other.
  • each bushing 78 has a sealing element 81 which the bushing 78 against the plug 47 seals.
  • each connector 80 of the socket 78 Supply lines 120-125 can be connected.
  • the connection between the in Fig. 1st illustrated electrical supply line 120 and the connecting element 80 can for example by soldering, welding or the like at a contact point 82 respectively.
  • an upper tab 83 of the socket 78 is used for this can be folded up so that the contact point 82 is accessible for contacting.
  • By Connecting the upper tab 83 to a lower tab 84 may subsequently be one Splashproof coverage of pad 82 can be achieved to prevent corrosion counteract at the contact point 82.
  • the Gas supply line 70 is thickened to a carrier body 85, so that there is a total a stable design of the distribution device 1 results.
  • clamping elements 86 are provided, which the Cable routing of the electrical supply lines 120-125 serve as shown in FIG. 4 emerges in detail.
  • each socket 78 on the gas supply line 70 Actuator 87 formed, with which one is in the form of a spring wire 88 trained locking spring, which the locking of the bushing 78 on the Plug 47 is used, can be released, whereupon with reference to Figures 2 and 3 below is received.
  • FIG. 2 shows a view of the distributor device 1 according to the invention in the area a connector 7 and in the area of a socket 78 with a view from Fuel injector side 2.
  • each fuel injection valve 2 Locking spring provided, which in its undeformed state Connection of the socket 78 with the plug 47 of the associated Fuel injector 2 locked and in their deformed state Connection of the socket 78 with the plug 47 of the associated Fuel injector 2 releases.
  • the Locking spring designed as a substantially U-shaped bent spring wire 88.
  • the two legs 100, 101 of the spring wire 88 extend from the area the socket 78 transverse to the longitudinal extent of the gas supply line 70 to the associated actuator 87.
  • the actuators 87 are on the Side 102 of the gas supply line 70 facing away from the sockets 78.
  • Each actuator 87 has two projections 103, 104 for guiding of the spring wire 88 are each provided with a slot 136 shown in FIG. 1 are.
  • the spring wire 88 guided in the slots 105 of the projections 103, 104 is shown in FIG the area between the projections 103, 104 freely accessible.
  • the location of the spring wire 88 in his shifted position is by a dash-dotted line in Fig. 2nd shown.
  • the ends 105 and 106 of the legs 100, 101 of the U-shaped bend Spring wire 88 slide on one at an angle pointing outwards Inclined surface 107, 108 along the bushing 78.
  • the legs are for clarification the displaced spring wire 88 'with the reference numerals 100' and 101 ', while the ends of the legs are in their displaced position with the reference number 105 'and 106'.
  • one of the legs 100, 101 covers one of the two guide grooves 109, 113 arranged in the lateral area of the bushing 78, that extend perpendicular to the plane of the drawing, in the Lines shown basic position of the spring wire 88.
  • the Legs 100 ', 101' shown in dash-dotted lines in Fig. 2 shifted position of the spring wire 88 'spread so far that it Release guide grooves 109, 113.
  • FIG. 3 shows a partially sectioned, schematic illustration Fuel injection valve 2, which is essentially identical in construction to that in FIG. 1 fuel injector 2 shown.
  • Plug 47 has a guide lug 111 on each of its side areas 110 when assembling the plug 47 with the socket 78 of the invention
  • Distribution device 1 penetrates into each of the guide grooves 109, 113.
  • the guide lug 111 may have a beveled end surface 112 that the Legs 100, 101 of the spring wire 88 when joining plug 47 and Slide apart 78 so that the spring wire 88 is not actuated during assembly must become.
  • the arrangement of the actuator 87 on the facing away from the bushings 78 Page 102 of the gas supply line 70 has the advantage that the accessibility of the Actuator 87 is not hindered by the fuel injector 2. There is also a particularly space-saving overall arrangement. At the same time, the Arrangement of the actuator 87 according to the invention the advantage that this in immediate vicinity of the gas inlet channel 13 and the sealing body 74 of the Connector 7 is arranged. Therefore, the trained according to the invention Distributor 1 with a single handle from the fuel injector 2 can be solved by, on the one hand, the spring wire 88 in the region of the Actuator 87, as shown in Fig.
  • FIG. 4 shows a top view of the distributor device 1 according to the invention
  • the sockets 78.1 and 78.2 on the Gas supply line 70 are integrally formed.
  • Associated actuators 87.1 and 87.2 are located on the opposite side of the Gas supply line 70.
  • the number of sockets 78.1, 78.2 and the number of Connectors 7.1, 7.2 corresponds to the number of the internal combustion engine to be provided fuel injection valves 2.
  • the gas supply line 70 is on the left Edge of the drawing extended so far that all fuel injectors 2 can be achieved. For the present embodiment it is assumed that a total of four fuel injection valves 2 are provided. However, are out For reasons of simplification, only two sockets 78.1 and 78.2 and two Connections 7.1 and 7.2 shown.
  • the embodiment of the bushings 78.1 and 78.2 is compared to that in FIG. 1 illustrated embodiment modified in that the contacting of Connection elements 80 with the electrical supply lines 120 to 125 are not laterally, but from above. Furthermore, the sockets 78 on the Gas supply line 70 immediately without the interposition of a support body (85 in Fig. 1) molded.
  • a separate electrical supply line leads to each socket 78.1, 78.2 120 to 124.
  • the electrical supply lines 120 to 124 are in on the Top of the gas supply line 70 integrally formed clamping elements 86.1 to 86.3 guided.
  • the clamping elements 86.1 to 86.3 allow flexible and fast Laying the electrical supply lines 120 to 124.
  • All sockets 78.1, 78.2 are connected to a common electrical supply line 125, which e.g. forms the ground line.
  • the lines can be trough-shaped at branch points 135.1, 135.2 Elements, preferably shots 130.1 and 130.2, can be inserted, according to the Establishing the electrical contact with a hardening synthetic resin be poured out. This is a mechanical fixation and a electrical insulation achieved.
  • the flexible locking of the electrical supply lines shown in FIG. 4 120 to 125 serves at the same time the tolerance compensation, so that damage to the electrical supply lines 120 to 125 by a rigid fixation could be caused, is counteracted.
  • the leadership of the electrical Supply lines 120 to 125 can also be done in a different way. For example, flexible conductor tracks applied on a foil be provided or the electrical supply lines can be in the wall of the Gas supply line 70 can be cast.
  • the gas supply line 70 has a connecting piece 132, via which the gas supply line 70 the gas medium, e.g. filtered Air.
  • the electrical supply lines 120 to 125 can a cable tail 133 combined and a common connector 134th be fed.
  • the device plug 134 is e.g. in an electrical control unit Control of the fuel injection valves 2 can be inserted.
  • the invention is not restricted to the exemplary embodiments shown. So can the elastically deformable locking spring in another way, for example can be realized by a leaf spring or a flexible plastic part. Furthermore, a variety of other known plug and socket shapes in the context of present invention apply.

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

Claims (13)

  1. Installation de distribution pour des installations d'injection de carburant dans des moteurs à combustion interne pour l'alimentation en gaz et le branchement électrique d'au moins deux injecteurs de carburant (2) servant à injecter un mélange carburant/gaz, comprenant une conduite d'alimentation en gaz 70 pour assurer l'alimentation en gaz commune des injecteurs de carburant, cette conduite ayant une ouverture d'alimentation (71) et un nombre de pièces de liaison correspondant au nombre d'injecteurs de carburant, ces pièces de liaison servant à réaliser la liaison entre l'orifice d'alimentation et les canaux d'entrée de gaz (13) des injecteurs de carburant, et
    un nombre de douilles (78) correspondant au nombre des injecteurs de carburant, ces douilles étant réparties le long de la conduite d'alimentation en gaz pour coopérer avec des connecteurs (47) prévus sur les injecteurs de carburant pour assurer le branchement électrique des injecteurs de carburant,
    caractérisée en ce que
    un ressort de verrouillage (88) est prévu pour chaque douille (78) pour verrouiller la liaison entre la douille 78 et le connecteur (47) de l'injecteur de carburant (2) correspondant, et
    sur le côté (102) de la conduite d'alimentation en gaz 70 à l'opposé de la douille (78), il est prévu une installation d'actionnement (87) pour ouvrir le ressort de verrouillage (88) et chaque ressort de verrouillage (88) s'étend transversalement à la direction longitudinale de la conduite d'alimentation de gaz (70) jusqu'au niveau de l'installation d'actionnement (87) correspondante.
  2. Installation de distribution selon la revendication 1,
    caractérisée en ce que
    les ressorts de verrouillage sont réalisés chaque fois sous la forme d'un ressort en fil (88) essentiellement en U et les douilles (78) comportent au niveau des extrémités (105, 106) du ressort (88), des surfaces en biais (107, 108) pour permettre d'écarter les branches (100, 101) du ressort (88) en forme de U lorsque le ressort (88) est glissé par rapport à la douille (78) pour que ses extrémités (105, 106) glissent le long des surfaces inclinées (107, 108).
  3. Installation de distribution selon la revendication 2,
    caractérisée en ce que
    chaque douille (78) comporte au moins une rainure de guidage (109, 113) recevant un bec de guidage (111) prévu sur le connecteur (47) de l'injecteur de carburant (2) associé et
    le ressort en forme de fil (88) ferme la rainure de guidage (109, 113) lorsqu'il est à l'état non déformé (88) alors qu'il libère la rainure de guidage (109, 113) lorsqu'il est à l'état déformé (88').
  4. Installation de distribution selon la revendication 3,
    caractérisée en ce qu'
    une rainure de guidage (109, 113) est associée à chaque branche (100, 101) du ressort en fil de fer (88) en forme de U.
  5. Installation de distribution selon l'une quelconque des revendications 2 à 4,
    caractérisée en ce que
    l'installation d'actionnement (87) comporte deux parties en saillie (103, 104) prévues sur la conduite d'alimentation en gaz (70), ces parties en saillie guident le ressort en fil de fer (88) pour que celui-ci passe dans la zone comprise entre les parties en saillie (103, 104) en laissant un intervalle par rapport à la conduite d'alimentation en gaz (70).
  6. Installation de distribution selon la revendication 5,
    caractérisée en ce que
    les parties en saillie (103, 104) ont chacune une fente (136) pour guider le ressort en fil de fer (88).
  7. Installation de distribution selon l'une quelconque des revendications 1 à 6,
    caractérisée en ce que
    les pièces de liaison (7) ont chacune un organe d'étanchéité (74) en matière élastique entourant chaque canal d'entrée de gaz (13) au moins partiellement dans la direction radiale après mise en place dans la pièce de liaison (7).
  8. Installation de distribution selon la revendication 7,
    caractérisée en ce que
    les organes d'étanchéité (74) ont chacun une rainure (76) dans laquelle s'accroche un bossage radial (90) respectif des canaux d'entrée de gaz (13) lors de leur mise en place dans la pièce de liaison (7).
  9. Installation de distribution selon la revendication 8,
    caractérisée en ce que
    les parties bombées (90) ont une forme de dent de scie.
  10. Installation de distribution selon l'une quelconque des revendications 1 à 9,
    caractérisée en ce que
    la paroi de la conduite d'alimentation en gaz (70) comporte extérieurement des pinces (86) recevant les lignes d'alimentation électriques (120-125) reliées aux douilles (78).
  11. Installation de distribution selon la revendication 10,
    caractérisée en ce qu'
    au moins l'une des lignes d'alimentation électriques (125) présente des dérivations vers toutes les douilles (78) au niveau des points de dérivation (135) où sont formés des éléments (130) en cuvette sur l'installation de distribution (1) qui reçoivent les points de contact (128, 129) réalisés sur les points de dérivation (135) et ces cuvettes sont remplies de résine durcissable pour isoler électriquement les points de contact (128, 129).
  12. Installation de distribution selon l'une quelconque des revendications 10 ou 11,
    caractérisée en ce que
    les lignes d'alimentation électriques (120-125) sont regroupées à une extrémité de l'installation de distribution (1) pour former un faisceau de câbles (133) relié à un connecteur commun (134).
  13. Installation de distribution selon l'une quelconque des revendications 1 à 12,
    caractérisée en ce que
    la conduite d'alimentation en gaz (70) comporte une extrémité ouverte (131) avec un ajutage de raccordement (132) alors que l'extrémité opposée de la conduite d'alimentation en gaz (70) est fermée.
EP97942769A 1996-11-18 1997-09-02 Dispositif distributeur pour systemes d'injection de carburant Expired - Lifetime EP0876552B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19647586 1996-11-18
DE19647586A DE19647586A1 (de) 1996-11-18 1996-11-18 Verteilereinrichtung für Brennstoffeinspritzanlagen
PCT/DE1997/001915 WO1998022706A1 (fr) 1996-11-18 1997-09-02 Dispositif distributeur pour systemes d'injection de carburant

Publications (2)

Publication Number Publication Date
EP0876552A1 EP0876552A1 (fr) 1998-11-11
EP0876552B1 true EP0876552B1 (fr) 2002-03-06

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EP97942769A Expired - Lifetime EP0876552B1 (fr) 1996-11-18 1997-09-02 Dispositif distributeur pour systemes d'injection de carburant

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US (1) US6012418A (fr)
EP (1) EP0876552B1 (fr)
JP (1) JP2000504386A (fr)
DE (2) DE19647586A1 (fr)
ES (1) ES2174290T3 (fr)
WO (1) WO1998022706A1 (fr)

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DE10115049A1 (de) * 2001-03-27 2002-10-02 Bosch Gmbh Robert Adapter für elektrische Steckverbindungen an Brennstoffeinspritzventilen
US6877491B2 (en) * 2002-07-31 2005-04-12 Honda Giken Kogyo Kabushiki Kaisha Air fuel injection engine
US6640784B1 (en) 2002-10-09 2003-11-04 Robert Bosch Corporation Spark ignition direct injection system
US6666190B1 (en) * 2003-01-03 2003-12-23 Ford Global Technologies, Llc Integrated fuel delivery and electrical connection for electronic fuel injectors
JP2006161764A (ja) * 2004-12-10 2006-06-22 Keihin Corp 燃料分配管におけるワイヤハーネス取付け構造
DE102009045048A1 (de) * 2009-09-28 2011-03-31 Robert Bosch Gmbh Hydraulik-Elektrik-Stecker für Injektor-Magnetgruppe
DE102017214980A1 (de) * 2017-08-28 2019-02-28 Robert Bosch Gmbh Einspritzventilanordnung

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JP2749839B2 (ja) * 1988-10-31 1998-05-13 株式会社デンソー エンジンの燃料噴射装置
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Also Published As

Publication number Publication date
EP0876552A1 (fr) 1998-11-11
ES2174290T3 (es) 2002-11-01
JP2000504386A (ja) 2000-04-11
DE19647586A1 (de) 1998-05-20
US6012418A (en) 2000-01-11
DE59706555D1 (de) 2002-04-11
WO1998022706A1 (fr) 1998-05-28

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