EP1982070B1 - Corps d'accumulation a haute pression a bloc de repartition integre - Google Patents

Corps d'accumulation a haute pression a bloc de repartition integre Download PDF

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Publication number
EP1982070B1
EP1982070B1 EP06830244A EP06830244A EP1982070B1 EP 1982070 B1 EP1982070 B1 EP 1982070B1 EP 06830244 A EP06830244 A EP 06830244A EP 06830244 A EP06830244 A EP 06830244A EP 1982070 B1 EP1982070 B1 EP 1982070B1
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EP
European Patent Office
Prior art keywords
pressure
pressure accumulator
throttle
integrated
volume
Prior art date
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Active
Application number
EP06830244A
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German (de)
English (en)
Other versions
EP1982070A1 (fr
Inventor
Christoph Weizenauer
Jochen Walther
Markus Degn
Gernot Payer
Sven Voelter
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Robert Bosch GmbH
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Robert Bosch GmbH
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Publication of EP1982070A1 publication Critical patent/EP1982070A1/fr
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    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
    • F02M55/025—Common rails
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/04—Means for damping vibrations or pressure fluctuations in injection pump inlets or outlets
    • 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
    • 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
    • F02M63/0275—Arrangement of common rails
    • F02M63/0285—Arrangement of common rails having more than one common rail
    • F02M63/0295—Arrangement of common rails having more than one common rail for V- or star- or boxer-engines
    • 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
    • F02M2200/28—Details of throttles in 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/31—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements
    • F02M2200/315—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements for damping fuel pressure fluctuations
    • 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

Definitions

  • a fuel injection system for a multi-cylinder internal combustion engine having a first high-pressure accumulator and a second high-pressure accumulator and with a high-pressure pump in which a damping volume for damping pressure pulsations between the high-pressure accumulators and between the high-pressure accumulators and the high-pressure pump is integrated in one of the high-pressure accumulator is off EP 0 995 902 A2 known.
  • DE 100 60 785 A1 refers to a fuel injector with a high-pressure fuel storage.
  • branch pipes are screwed, each containing a throttle for reducing pressure pulsations in the fuel injection device.
  • the throttles are each formed as a pipe piece disposed at one end of the branch pipe to which a connection head is attached or inside the branch pipe near that end.
  • Throttle elements in high-pressure accumulators are used for pressure wave attenuation within the high-pressure accumulator body.
  • cylindrical throttle pieces in connection bores of the high-pressure accumulator (common rail) which lead to the individual fuel injectors or to the high-pressure accumulator acting on the high-pressure pump, pressed.
  • the throttle elements pressed into the connection bores serve to improve the damping of pressure oscillations within the fuel injection system and thereby make it possible to increase the pressure resistance of the individual components.
  • a fuel injector for a diesel engine.
  • a fuel injector comprises a high-pressure fuel storage and a plurality of the fuel discharge from the high-pressure fuel storage serving branch pipes. These each have at one end a connection head for connecting the branch pipe with an associated connection piece of the high-pressure fuel storage, wherein in each of the branch pipes, a throttle is mounted.
  • the throttle is formed in a carrier element which is fixed in the region of the connection head by fixing elements which are formed with the formation of the connection head and which narrow a clear width of the branch pipe on both sides of the carrier element.
  • the throttle is in the support member as a through hole with a first partial bore and a second partial bore, that is executed in two stages.
  • the through hole is secured during the upsetting of the connection head by an inserted, stepped cylindrical inner mandrel, which is designed to be traceable.
  • the carrier element preferably has a cylindrical lateral surface.
  • Internal combustion engines with six or more cylinders use two high-pressure accumulators, which supply the fuel injectors of the cylinders of a cylinder bank with fuel.
  • the two high-pressure accumulators (Common Rail) are connected to each other by a connecting line, which ensures a pressure equalization between the high-pressure accumulators.
  • a distributor block can additionally be used. The distributor block is acted upon by a high-pressure pump, which compresses the fuel to the system pressure and maintains this system pressure in the two high pressure accumulators. From the acted upon by the high-pressure pump manifold block in which vibrations are damped, the two high-pressure accumulator are supplied with fuel.
  • the distributor block is integrated into one of the two high-pressure accumulators supplying fuel to the multi-cylinder internal combustion engine.
  • This is preferably realized in that in the cavity of the respective high-pressure accumulator (common rail), a throttle is integrated.
  • a throttle is integrated in the cavity of the respective high-pressure accumulator (common rail).
  • the distributor block representing smaller volume of the respective high-pressure accumulator is located at the end of the high-pressure accumulator to which the branching from the high-pressure pump, the respective high-pressure accumulator fuel-supplying high pressure pumps are connected.
  • the other high-pressure accumulator is supplied from the mentioned high-pressure accumulator, in which the distributor block is integrated, via a connecting line with fuel whose outlet point is integrated in the further high-pressure accumulator, a damping throttle.
  • inventively proposed solution of the integration of the previously manufactured as a separate component manifold block in one of the high-pressure accumulator on the one hand, the use of a space-consuming separate component between the two high-pressure accumulators avoided, so that the installation space of the inventively proposed fuel injection system in the cylinder head area of a multi-cylinder internal combustion engine fails. Furthermore, a considerable cost advantage is achieved due to the avoidance of a separate flameproof component to be designed.
  • the distribution block integrated in one of the high-pressure accumulators likewise dampens Pressure oscillations that can occur in the fuel injection system and is therefore equivalent in function to a previously manufactured as a separate component manifold block.
  • this can also be integrated as Einpressdrossel a ring member and a throttle body in the cavity of the high-pressure accumulator.
  • the integrated throttle can be designed to comprise both a one-piece component and a multi-part component comprising an annular body and a throttle body.
  • the integrated throttle can also be designed as a clamped throttle, which is fixed by means of a ring tensioning element in the cavity of the respective high-pressure accumulator (common rail).
  • the position of the integrated throttle within the cavity of the high-pressure accumulator can be chosen arbitrarily, so that the two individual volumes within the high-pressure accumulator are freely selectable and freely definable.
  • the integrated throttle as a two-part component can be designed to comprise a screw part and a threaded part, wherein both the threaded part and the screw part are supported on a diameter step on the inner wall of the cavity of the high-pressure accumulator and are screwed against one another.
  • the screw connection integrates the integrated throttle in the cavity of the relevant high-pressure accumulator (common rail).
  • FIG. 1 The representation according to FIG. 1 is to be taken from a known from the prior art fuel injection system for multi-cylinder internal combustion engines, wherein the manifold block is designed as a separate component.
  • a fuel injection system 10 includes a high-pressure pump 12, which acts on a designed as a separate component manifold block 14 with fuel.
  • the lines extending from the high-pressure pump 12 to the manifold block 14 each have manifold block throttles 16, via which an attenuation of the pressure pulsations in the fuel injection system 10 takes place.
  • a first high-pressure accumulator 18 (common rail) and a second high-pressure accumulator 20 (common rail) are supplied with fuel under system pressure.
  • the system pressure prevailing in the first high-pressure accumulator 18 and the second high-pressure accumulator 20 depends on the design of the high-pressure pump 12.
  • the first high-pressure accumulator 18 is a rail pressure sensor 22 associated with the second high pressure accumulator 20, a pressure control valve 24.
  • the first high-pressure accumulator 18 is acted upon by the manifold block 14 via a pressure line, at the end of a damper throttle 26 is designed at the entrance of the first high-pressure accumulator 18.
  • Each of the two high-pressure accumulators 18 and 20 comprises four injector supply lines 28, in each of which a supply line throttle 30 can be integrated to pressure pulsations between the in FIG. 1 Not shown fuel injectors and the respective high-pressure accumulators 18 and 20 to attenuate.
  • a supply line throttle 30 can be integrated to pressure pulsations between the in FIG. 1 Not shown fuel injectors and the respective high-pressure accumulators 18 and 20 to attenuate.
  • the fuel injection system 10 are supplied via the two high-pressure accumulator 18 and 20 respectively four fuel injectors with fuel under system pressure standing, which are associated with the respective cylinder two cylinder banks of a multi-cylinder internal combustion engine.
  • the fuel injection system 10 has a high-pressure accumulator 40 with integrated manifold block.
  • the high-pressure accumulator 40 is designed to be longer with integrated manifold block compared to the second high-pressure accumulator 20.
  • Both high-pressure accumulator 20 and 40 are designed substantially tubular.
  • the high-pressure accumulator 40 with integrated manifold block is the rail pressure sensor 22 associated with the second high-pressure accumulator 20, the pressure control valve 24.
  • the high-pressure accumulators 20, 40 are each assigned four Injektorzutechnischen 28, in each of which a supply line throttle 30 is received. With the in FIG.
  • the fuel injection system 10 shown the cylinders of two cylinder banks of an 8-cylinder internal combustion engine can be supplied with system under pressure fuel.
  • the fuel injection system 10 as shown in FIG. 2 can of course also be modified so that a designed in V-shape six-cylinder engine can be equipped with it, instead of in FIG. 2 illustrated embodiment of the fuel injection system 10 for 8-cylinder internal combustion engines, internal combustion engines can be equipped with the present invention proposed fuel injection system, which have an even higher number of cylinders.
  • the high-pressure accumulator 40 with integrated manifold block has an integrated throttle 42 so that its total volume is divided into a first high-pressure accumulator volume 44 and a second high-pressure accumulator volume 46.
  • the first high-pressure accumulator volume 44 is dimensioned larger than the second high-pressure accumulator volume 46, which serves as an integrated distributor block within the high-pressure accumulator 40.
  • the second high-pressure accumulator volume 46 ie the distributor block integrated in the high-pressure accumulator 40, is preferably located at the end at which the high-pressure accumulator 40 with integrated manifold block is acted upon by high-pressure fuel via pressure lines 48 from the high-pressure pump 12.
  • each of the supply lines 48 between the high-pressure pump 12 and the second high-pressure accumulator volume 46 are pressure line throttles 50, 52, the pressure pulsations between the high-pressure accumulator 40 with integrated manifold block and the high-pressure pump 12 attenuate.
  • the second high-pressure accumulator volume 46 in the high-pressure accumulator 40 with integrated distributor block is connected to the second high-pressure accumulator 20 via a connecting line, which contains an attenuation restrictor 26.
  • the second high-pressure accumulator 20 is constructed as well as in FIG. 1 illustrated second high-pressure accumulator 20th
  • FIG. 2 Through the in FIG. 2 represented fuel injection system 10 according to the invention is in FIG. 1 as a separate component shown distributor block 14 saved, so that in the cylinder head area of a multi-cylinder internal combustion engine with two cylinder banks a smaller footprint for the inventively proposed fuel injection system 10 results.
  • Figure 3.1 is a procured as a through hole embodiment variant of the integrated throttle refer.
  • Figure 3.1 shows that the high pressure accumulator 40 with integrated manifold block has a cavity 54.
  • the cavity 54 is determined by a respective portion of a deep hole bore 56 introduced on both sides into the high-pressure accumulator 40 with an integrated distributor block.
  • an integrated throttle 42 which can be embodied as a through-bore 62 is executed.
  • the second high-pressure storage volume 46 within the cavity 54 formed by a portion of the deep hole bore 56 is limited on the one hand by the integrated throttle 42 and on the other hand by a port 64 to which the high pressure pump 12 is connected.
  • an integrated damper throttle 66 may be formed.
  • injection throttle 48 pressure pulsations between the in Figure 3.1 Not shown fuel injectors and the cavity 54 of the high-pressure accumulator 40 with integrated manifold block damped.
  • the representation according to Figure 3.2 shows a variant of the in Figure 3.1 illustrated integrated throttle.
  • the integrated throttle 42 is also designed as a through-drilled throttle 62 with a stepped throttle channel, but the facing end sides of the two bore portions of the deep hole bore 56 are provided in the high-pressure accumulator 40 with integrated manifold block each with a rounding 70. This favors the strength properties of the high-pressure accumulator 40 with integrated distributor block, since notch effect is avoided.
  • the cavity 54 and the second high-pressure accumulator volume 46 are supplied directly via the pressure acting on the port 64 via the pressure line 48 high-pressure pump 12 with high pressure fuel.
  • a further embodiment of the integrated throttle is shown, which is located in a sleeve-shaped component, which is embedded in the cavity of the high-pressure accumulator with integrated manifold block.
  • connection 64 for the pressure line 48 of the high-pressure pump 12 has a biting edge 64 which is fixed positively or positively in the bore diameter 46 and acts on the sleeve 72 with integrated throttle 42 inserted into the cavity 54.
  • biting edge 64 which is fixed positively or positively in the bore diameter 46 and acts on the sleeve 72 with integrated throttle 42 inserted into the cavity 54.
  • the wall 68 of the high-pressure accumulator 40 with an integrated distributor block are the already mentioned Einpressdrosseln 48 below the terminals 60, to which the Injektorzutechnischen 28 are connected to the standing under system pressure fuel injectors.
  • Figure 4.2 shows a variant of the in Figure 4.1 illustrated configuration.
  • the in F igur 4.1 shown components, namely the sleeve 72 and the port 64 for the pressure supply line 48 of the high-pressure pump as a common insert 78 are integrally executable.
  • the insert 78 includes the connection for the pressure line 48 of the high pressure pump 12 and the sleeve.
  • the one-piece insert 78 has a bottom surface, in which the integrated throttle 42 is also formed as a simple bore.
  • the first high-pressure accumulator volume 44 and the second high-pressure accumulator volume 46 are shown in the cavity 54 of the high-pressure accumulator 40 with integrated manifold block.
  • the damper throttles 30 are realized as simple bores in the wall 68 of the high-pressure accumulator 40 with integrated distributor block and are located below the connections 60 for the injector supply lines 38.
  • FIG. 5 is to take a variant for an integrated throttle, which is designed as Einpressdrossel.
  • the high-pressure accumulator 40 with integrated manifold block designed as a pressed throttle 80 integrated throttle 42 separates the second high-pressure accumulator volume 46 from the first high-pressure accumulator volume 44th
  • the size of the first high-pressure accumulator volume 44 and the size of the second high-pressure accumulator volume 46 in the cavity 54 of the high-pressure accumulator 40 with integrated manifold block can be exactly specified.
  • this has a ring body 82 and a throttle body 84.
  • the annular body 82 is located on an inner wall which bounds the cavity 54 of the high-pressure accumulator 40 with an integrated distributor block.
  • the damper throttles 30 are again designed as simple bores which run perpendicular to the cavity 54 below the connections 60 for the injector supply lines 28.
  • Figure 5.1 shows a variant of a designed as Einpresshrrossel integrated throttle according to FIG. 5 .
  • a diameter step 86 is formed, on which a collar of the throttle body 84 is supported.
  • the throttle body 84 is crossed by a throttle passage 88 having a diameter step and separates the first high-pressure accumulator 44 from the second high-pressure accumulator 46.
  • Figure 5.2 shows a variant of the integrated throttle, which is fixable by means of a ring tensioning element in the high-pressure accumulator with integrated manifold block.
  • a clamped throttle 92 is fixed via a ring clamping element 90 to the wall 68 on the inner wall 94 of the high pressure accumulator 40 with integrated manifold block.
  • the installation location of the integrated throttle 42 in the high-pressure accumulator 40 with integrated manifold block according to the distribution of the high-pressure accumulator volumes 44 and 46 are freely selected.
  • the clamped throttle 92 has a throttle channel 88 with diameter stage.
  • Figure 5.3 can be removed that the integrated throttle 42 is formed as a screwed throttle 96 and has a screw 98 and a threaded portion 100. Both the threaded part 100 and the screw 98 abut against a diameter stage 86 which is formed on the inner wall 94 of the high-pressure accumulator 40 with integrated manifold block.
  • the threaded portion 100 and the screw 98 each have a tool attachment 102, via which the screw 98 and the threaded portion 100 are screwed until their respective end faces abut against the diameter step 86 of the inner wall 96 of the high-pressure accumulator 40 with integrated manifold and there with defined torque against each other be screwed.
  • the screw 98 has the already mentioned throttle channel 88 with diameter stage. About the in FIG.
  • FIG. 5 illustrated embodiments of the integrated throttle 42, the in FIG. 2 High-pressure accumulators 40 with integrated distributor block 40 are likewise divided into a first high-pressure accumulator volume 44 and a second high-pressure accumulator volume 46, the second high-pressure accumulator volume 46 serving as an integrated distributor block, in which pressure pulsations in fuel under system pressure are damped.
  • the second high-pressure accumulator volume 46 which forms the integrated distributor block, is connected to the second high-pressure accumulator 20 via a connecting line with damping restrictor 26, as in FIG FIG. 2 shown in connection.

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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)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Claims (9)

  1. Système d'injection de carburant (10) pour un moteur à combustion interne à plusieurs cylindres comprenant un premier accumulateur haute pression (18, 40) et un deuxième accumulateur haute pression (20), et comprenant une pompe haute pression (12), le premier et le deuxième accumulateur haute pression (18, 40 ; 20) présentant un nombre de raccords (60) pour des conduites d'amenée à l'injecteur (28) correspondant au nombre des cylindres du moteur à combustion interne, et un volume d'amortissement (46) pour l'amortissement des impulsions de pression entre les accumulateurs haute pression (18, 40 ; 20) et entre les accumulateurs haute pression (18, 40 ; 20) et la pompe haute pression (12) étant intégré dans l'un des accumulateurs haute pression (18, 40 ; 20), caractérisé en ce que le volume de l'accumulateur haute pression servant de volume d'amortissement (46) est réalisé à l'extrémité de l'accumulateur haute pression (18, 40 ; 20) à laquelle est raccordée la pompe haute pression (12) alimentant en carburant l'accumulateur haute pression concerné (18, 40 ; 20).
  2. Système d'injection de carburant selon la revendication 1, caractérisé en ce que le volume total d'un accumulateur haute pression (40) est divisé par un étranglement intégré (42) en un premier volume d'accumulateur haute pression (44) et un deuxième volume d'accumulateur haute pression (46) servant de volume d'amortissement.
  3. Système d'injection de carburant selon la revendication 2, caractérisé en ce que le deuxième volume d'accumulateur de carburant (46) est inférieur au premier volume d'accumulateur de carburant (44).
  4. Système d'injection de carburant selon la revendication 2, caractérisé en ce qu'une conduite de connexion avec l'étranglement d'amortissement (26) s'étend depuis le deuxième volume d'accumulateur haute pression (46) jusqu'au deuxième accumulateur haute pression (20).
  5. Système d'injection de carburant selon la revendication 2, caractérisé en ce que l'étranglement intégré (42) est réalisé sous forme d'alésage traversant (62) dans l'accumulateur haute pression (40) entre les deux portions de chaque côté d'un alésage de trou profond (46).
  6. Système d'injection de carburant selon la revendication 2, caractérisé en ce que l'étranglement intégré (42) est réalisé sous forme d'ouverture dans une surface de fond d'un insert (72) en forme de douille pouvant être fixé au moyen d'un raccord (64), ou d'une pièce d'insert (78) d'une seule pièce, présentant un raccord.
  7. Système d'injection selon la revendication 2, caractérisé en ce que l'étranglement intégré (42) est fixé dans l'accumulateur haute pression (40) sous forme d'étranglement d'une seule pièce enfonçable (84) ou sous forme de plusieurs étranglements enfonçables (82, 84).
  8. Système d'injection de carburant selon la revendication 2, caractérisé en ce que l'étranglement intégré (42) est réalisé sous forme d'étranglement (92) serré au moyen d'un élément de serrage annulaire (90) dans l'accumulateur haute pression (40) ou sous forme d'un étranglement (42) vissé comprenant une partie filetée (100) et une partie de vis (98) dans l'accumulateur haute pression (40).
  9. Utilisation du système d'injection de carburant selon les revendications 1 à 8, dans des moteurs à combustion interne, en particulier des moteurs à combustion interne présentant plusieurs cylindres, deux accumulateurs haute pression (18, 40 ; 20) et deux rangées de cylindres.
EP06830244A 2006-01-26 2006-11-30 Corps d'accumulation a haute pression a bloc de repartition integre Active EP1982070B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006003639A DE102006003639A1 (de) 2006-01-26 2006-01-26 Hochdruckspeicherkörper mit integriertem Verteilerblock
PCT/EP2006/069147 WO2007085313A1 (fr) 2006-01-26 2006-11-30 Corps d'accumulation a haute pression a bloc de repartition integre

Publications (2)

Publication Number Publication Date
EP1982070A1 EP1982070A1 (fr) 2008-10-22
EP1982070B1 true EP1982070B1 (fr) 2011-04-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP06830244A Active EP1982070B1 (fr) 2006-01-26 2006-11-30 Corps d'accumulation a haute pression a bloc de repartition integre

Country Status (8)

Country Link
US (1) US7827962B2 (fr)
EP (1) EP1982070B1 (fr)
JP (1) JP5135230B2 (fr)
KR (1) KR101100957B1 (fr)
CN (1) CN101438052B (fr)
AT (1) ATE506532T1 (fr)
DE (2) DE102006003639A1 (fr)
WO (1) WO2007085313A1 (fr)

Families Citing this family (39)

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Publication number Priority date Publication date Assignee Title
JP4462286B2 (ja) * 2007-04-10 2010-05-12 トヨタ自動車株式会社 内燃機関の燃料供給装置
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KR101100957B1 (ko) 2011-12-29
US7827962B2 (en) 2010-11-09
US20090223486A1 (en) 2009-09-10
CN101438052B (zh) 2012-06-06
DE102006003639A1 (de) 2007-08-02
DE502006009376D1 (de) 2011-06-01
KR20080089667A (ko) 2008-10-07
WO2007085313A1 (fr) 2007-08-02
JP2009524761A (ja) 2009-07-02
EP1982070A1 (fr) 2008-10-22
CN101438052A (zh) 2009-05-20
JP5135230B2 (ja) 2013-02-06

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