EP2664782B1 - Injecteur pour une installation d'alimentation en carburant d'un moteur à combustion et installation d'alimentation en carburant - Google Patents
Injecteur pour une installation d'alimentation en carburant d'un moteur à combustion et installation d'alimentation en carburant Download PDFInfo
- Publication number
- EP2664782B1 EP2664782B1 EP13166455.9A EP13166455A EP2664782B1 EP 2664782 B1 EP2664782 B1 EP 2664782B1 EP 13166455 A EP13166455 A EP 13166455A EP 2664782 B1 EP2664782 B1 EP 2664782B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- control valve
- injection nozzle
- pressure
- combustion engine
- supply system
- 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.)
- Active
Links
- 239000000446 fuel Substances 0.000 title claims description 44
- 238000002485 combustion reaction Methods 0.000 title claims description 17
- 238000002347 injection Methods 0.000 claims description 47
- 239000007924 injection Substances 0.000 claims description 47
- 238000005086 pumping Methods 0.000 claims description 4
- 239000002131 composite material Substances 0.000 description 19
- 238000000926 separation method Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000010763 heavy fuel oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
Images
Classifications
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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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
-
- 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
- F02M41/00—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor
- F02M41/16—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor characterised by the distributor being fed from a constant pressure source, e.g. accumulator or constant pressure positive displacement pumps
-
- 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
- F02M59/48—Assembling; Disassembling; Replacing
-
- 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
- F02M61/14—Arrangements of injectors with respect to engines; Mounting of 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
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
- F02M2200/8023—Fuel injection apparatus manufacture, repair or assembly the assembly involving use of quick-acting mechanisms, e.g. clips
-
- 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
- F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
- F02M2200/803—Fuel injection apparatus manufacture, repair or assembly using clamp elements and fastening means; e.g. bolts or screws
-
- 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
- F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
- F02M2200/8076—Fuel injection apparatus manufacture, repair or assembly involving threaded members
Definitions
- the invention relates to an injector for a fuel supply system of an internal combustion engine according to the preamble of claim 1. Furthermore, the invention relates to a fuel supply system of an internal combustion engine according to the preamble of claim 10.
- the DE 101 57 135 B4 discloses an internal combustion engine, namely a heavy fuel oil powered marine diesel engine, having a plurality of cylinders, wherein each cylinder of the internal combustion engine is associated with an injector of a common rail fuel supply system. Via the injectors fuel can be injected into each of the cylinders of the internal combustion engine, which is why the injectors are also referred to as fuel injectors.
- the common rail fuel supply system according to DE 101 57 135 B4 comprises a pump device having a plurality of high-pressure pumps in order to convey fuel from a low-pressure region of the common-rail fuel supply system into a high-pressure region thereof, wherein a pressure accumulator system which is permanently under high pressure is provided in the high-pressure region between the pump device and the injectors.
- the permanently high pressure accumulator system which is also referred to as common rail, points to the DE 101 57 135 B4 several storage units and is connected via also permanently under high pressure high pressure fuel lines with the pumping device.
- the accumulator system is also connected to the injectors via pressurized high-pressure fuel lines that are temporarily under high pressure depending on the injection cycle.
- the high-pressure fuel lines which are temporarily under high pressure depending on the injection stroke and which connect the injectors to the pressure accumulator system are associated with switching valves which supply fuel to the injectors as a function of the injection stroke.
- the spatial distance between the injectors of the fuel supply system and the pressure storage system of the same can be relatively large and therefore the time dependent on the injection clock high pressure fuel lines connecting the injectors to the accumulator system, can be made relatively long Reducing a pressure loss already known injectors, which next to an injection nozzle, which is the actual injection of fuel into a cylinder of the internal combustion engine, and next to a control valve comprise a memory which provides an injector-specific fuel storage volume.
- an injector of a common rail fuel supply system which comprises in addition to the injection nozzle and designed as a solenoid valve control valve designated as injector body holding body, wherein the injector body provides a high-pressure accumulator.
- a throttle plate is positioned according to this prior art.
- the injector and the solenoid valve of the injector are composed of a variety of items. The assembly of the solenoid valve, the throttle plate and the injection nozzle on the holding body by means of a nozzle lock nut.
- the DE 10 2005 020833 A1 already treats an injector with an injection nozzle, with a control valve and a holding body, wherein the injection nozzle and the control valve can be assembled and disassembled as a tense composite on the holding body as a unit.
- the present invention has the object to provide a novel injector for a fuel supply system. Furthermore, a novel fuel supply system is to be provided with such injectors.
- an injector for a fuel supply system according to claim 1.
- the injection nozzle and the control valve form a strained composite, wherein the composite of the injection nozzle and the control valve on the holding body can be mounted as a unit and disassembled from the holding body as a unit.
- the injection nozzle and the control valve as a strained composite and to assemble this composite of injection nozzle and control valve on the holding body or to disassemble it from the holding body.
- the composite comprising the injection nozzle and the control valve, each having a plurality of filigree and sensitive components, can be pre-assembled as a composite.
- the actual mounting of this preassembled and prestressed composite on the holding body can then be done with relatively little effort on less trained personnel.
- Another advantage of providing a strained composite of injection nozzle and control valve results from the fact that in particular the holding body and the memory provided by the holding body or the separate injector-individual memory are relatively insensitive to wear, so that it is possible the wear-prone components, namely the injection nozzle and the solenoid valve, as a unit simply from the internal combustion engine, namely from the respective holding body of the same, to dismantle and replace it with a new unit of control valve and holding body.
- the control valve and the injection nozzle at a radially outer lateral surface in each case at least one radially inwardly directed recess, wherein a clamping sleeve radially inwardly directed projections which engage in the respective radially inwardly directed recess of the control valve and injector, and wherein the Clamping sleeve covering surfaces between the elements of the composite to be clamped.
- Fig. 1 a highly schematic cross-section through part of an injector of a common rail fuel supply system according to a first embodiment of the invention
- Fig. 2 A highly schematic exploded view of the injector of Fig. 1
- Fig. 3 a highly schematic cross-section through part of an injector of a common rail fuel supply system according to a second embodiment of the invention
- Fig. 4 A highly schematic exploded view of the injector of Fig. 3 ;
- Fig. 1 a highly schematic cross-section through part of an injector of a common rail fuel supply system according to a first embodiment of the invention
- Fig. 3 a highly schematic cross-section through part of an injector of a common rail fuel supply system according to a second embodiment of the invention
- Fig. 4 A highly schematic exploded view of the injector of Fig. 3 ;
- Fig. 1 a highly schematic cross-section through part of an injector of a common rail fuel supply system according to a first embodiment of the invention
- Fig. 2 A highly schematic
- the present invention relates to a common rail fuel supply system of a large diesel engine, in particular a marine diesel engine operated with heavy oil.
- Such common-rail fuel supply systems have a low pressure range and a high pressure area.
- the high-pressure region of a common rail fuel supply system comprises a pump device having at least one high-pressure pump and an accumulator system having at least one storage unit, wherein the pump device supplies fuel from the low-pressure region into the high-pressure region promotes and is connected to the accumulator system via at least one high-pressure fuel line.
- the accumulator system and the or each high pressure fuel line connecting the accumulator system to the pump means are permanently under a high working pressure.
- the fuel can be injected via injectors into cylinders, wherein each injector is connected to the accumulator system via at least one high-pressure fuel line, which is also permanently under a high working pressure.
- Fig. 1 and 2 show details of a first, inventive injector 1 a common rail fuel supply system, wherein the injector 1 in Fig. 1 and 2 the injection nozzle 2, a control valve 3 and between the injection nozzle 2 and the control valve 3 positioned intermediate plates 4 and 5 are shown, namely a valve plate 4 and a throttle plate 5.
- the injector 1 has a in Fig. 1 and 2 Not shown holding body, on which the control valve 3 engages, said holding body preferably provides an injector-specific memory for fuel.
- the injection nozzle 2 and the control valve 3 have a multiplicity of filigree components.
- the invention proposes to form the injector 2 and the control valve 3 as a strained composite 6 and provide, so that the composite 6 from the Injector 2 and the control valve 3 on the holding body, not shown as a unit easy to install and easy to dismantle from the holder body as a unit.
- the recesses 8 and 9 on the outer lateral surfaces of the injection nozzle 2 and the control valve 3 are each designed as circumferential grooves and the projections 10 and 11 of the clamping sleeve 7 formed as circumferential beads, which engage in these grooves.
- the clamping sleeve 7 is a relatively thin-walled clamping sleeve 7, which after being pushed over the same via the injection nozzle 2 and the control valve 3 is deformable such that their projections 10 and 11 in the recesses 8 and 9 of the injection nozzle 2 and control valve 3 below Bracing the composite 6 engage positively.
- the forming of the clamping sleeve 7 is preferably carried out by plastic compression thereof. Fig.
- the clamping sleeve covers 7 separating surfaces between the clamped components, ie a separation surface between the control valve 3 and the valve plate 4, a separation surface between the valve plate 4 and the throttle plate 5 and a separation surface between the throttle plate. 5 and the injection nozzle 2.
- a sealing function on the clamping sleeve 7 is provided based on these separation surfaces.
- 3 and 4 show a known example of an injector 1 'in the region of an injection nozzle 2' and a control valve 3 'and between the injection nozzle 2' and the control valve 3 'positioned intermediate plates 4' and 5 ', namely the valve plate 4' and the throttle plate 5 '. Also in this known example of the 3 and 4 these assemblies are clamped together as a composite 6 ', namely in turn by means of a clamping sleeve 7'.
- the clamping sleeve 7 ' serves in turn the distortion of the control valve 3', injection nozzle 2 'and the two intermediate plates 4' and 5 ', wherein the clamping sleeve 7' in the clamped state of the composite 6 'again separating surfaces between the braced elements 2', 3 ' , 4 'and 5' covered.
- the well-known example of 3 and 4 differs from the embodiment of Fig. 1 and 2 However, by the specific embodiment or design of the clamping sleeve 7 '.
- the 3 and 4 is on the radially outer surface of the control valve 3 'a shoulder 12' is formed, which cooperates with a radially inwardly directed projection 13 'of the clamping sleeve 7' together that the same together to ensure a positional fixation of the clamping sleeve 7 'on the control valve 3'.
- the clamping sleeve 7 ' has an internal thread 14' which cooperates with an external thread 15 'of the injection nozzle 2', namely such that when the injection nozzle 2 'and clamping sleeve 7' are screwed together via their threads 14 'and 15'.
- FIGS. 5 and 6 show injectors 1 "and 1 '", each of which modifications of the injector 1' of the known example of 3 and 4 Therefore, to avoid unnecessary repetition for the same components same reference numerals are used and will be discussed below only on the details through which the known examples of FIGS. 5 and 6 each of the known example of 3 and 4 differ.
- Fig. 6 differs from the known example of 3 and 4 only in that the geometric shortening of the clamping sleeve 7 'of the shoulder 12' of the control valve 3 ', together with the projection 13' of the clamping sleeve 7 ', the positional fixation between the clamping sleeve 7' and Control valve 3 'provides, at a central portion of the control valve 3' is formed.
- Fig. 5 differs from the known example of 3 and 4 in that on the outer circumferential surface of the control valve 3 'in accordance with the embodiment of Fig. 1 and 2 a circumferential groove 9 'is formed, in which for fixing the position of the clamping sleeve 7' on the control valve 3 'a circumferential projection 11' of the clamping sleeve 7 'positively engages.
- two intermediate plates are respectively positioned between the respective injection nozzle 2, 2 'and the respective control valve 3, 3', namely the valve plate 4, 4 'and the throttle plate 5 , 5 '. It is possible that only one of these intermediate plates 4, 4 'or 5, 5' or no intermediate plate is present.
Landscapes
- 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 (3)
- Injecteur (1 ; 1', 1", 1''') pour une installation d'alimentation en carburant d'un moteur à combustion interne, notamment pour une installation d'alimentation en carburant à rail commun d'un moteur à combustion interne réalisée notamment comme un grand moteur diesel ou un moteur diesel de bateau, comportant une buse d'injection (2,2') avec une soupape de commande (3,3') et avec un corps de retenue, dans lequel la buse d'injection (2,2') et la soupape de commande (3,3') forment un bloc serré (6,6') et dans lequel le bloc (6,6') composé de la buse d'injection (2,2') et de la soupape de commande (3,3') peut être monté comme une unité sur le corps de retenue et peut être démonté comme une unité du corps de retenue, caractérisé en ce que la soupape de commande (3) et la buse d'injection (2) présentent sur une surface de gaine extérieure radiale respectivement au moins une rainure circonférentielle (8,9) orientée radialement vers l'intérieur, dans lequel un manchon de serrage (7) présente sur des portions espacées axialement respectivement une protubérance (10,11) circonférentielle, orientée radialement vers l'intérieur, qui viennent en prise dans les rainures respectives (8,9) orientées vers l'intérieur, dans lequel le manchon de serrage (7) couvre des surfaces de séparation entre des éléments à serrer (2,3,4,5) du bloc (6), dans lequel les protubérances après une déformation du manchon de serrage (7) enveloppant au moins par portion la buse d'injection (2) et la soupape de commande (3) viennent en prise par conjonction de forme dans les rainures (8,9) en constituant le bloc serré.
- Injecteur selon la revendication 1, caractérisé par au moins une plaque intermédiaire positionnée entre la buse d'injection (2,2') et la soupape de commande (3,3'), notamment par une plaque de soupape (4,4') positionnée entre la buse d'injection (2,2') et la soupape de commande (3,3') et/ou par une plaque d'étranglement (5,5') positionnée entre la buse d'injection (2,2') et la soupape de commande (3,3'), dans lequel la ou chaque plaque intermédiaire est serrée conjointement à la buse d'injection (2,2') et la soupape de commande (3,3') de manière à former le bloc (6,6').
- Installation d'alimentation en carburant, notamment installation d'alimentation en carburant à rail commun d'un moteur à combustion interne réalisée notamment comme un grand moteur diesel ou un moteur diesel de bateau, comportant une zone à basse pression, avec un dispositif de pompage comprenant au moins une pompe à haute pression, pour refouler le carburant hors de la zone à basse pression de l'installation d'alimentation en carburant dans une zone à haute pression de cette dernière, dans laquelle dans la zone à haute pression entre les injecteurs affectés au dispositif de pompage et au cylindre est prévu un système d'accumulateur de pression étant en permanence sous haute pression, présentant au moins une unité de stockage, dans laquelle le système d'accumulateur de pression est relié par l'intermédiaire d'au moins une conduite de carburant à haute pression étant également en permanence sous haute pression avec le dispositif de pompage, dans lequel le système d'accumulateur de carburant est relié par l'intermédiaire des conduites de carburant à haute pression avec les injecteurs, caractérisé en ce que les injecteurs (1,1',1",1'") sont configurés selon une des revendications 1 à 2.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012208075A DE102012208075A1 (de) | 2012-05-15 | 2012-05-15 | Injektor für eine Kraftstoffversorgungsanlage einer Brennkraftmaschine sowie Kraftstoffversorgungsanlage |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2664782A1 EP2664782A1 (fr) | 2013-11-20 |
EP2664782B1 true EP2664782B1 (fr) | 2018-08-29 |
Family
ID=48190415
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13166455.9A Active EP2664782B1 (fr) | 2012-05-15 | 2013-05-03 | Injecteur pour une installation d'alimentation en carburant d'un moteur à combustion et installation d'alimentation en carburant |
Country Status (6)
Country | Link |
---|---|
US (1) | US10174729B2 (fr) |
EP (1) | EP2664782B1 (fr) |
JP (1) | JP6388323B2 (fr) |
KR (1) | KR20130127933A (fr) |
CN (1) | CN103423052B (fr) |
DE (1) | DE102012208075A1 (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013018177B4 (de) * | 2013-11-29 | 2016-01-28 | L'orange Gmbh | Kraftstoffinjektormodul sowie Kraftstoffinjektor und Prüfanordnung damit |
JP6406118B2 (ja) * | 2015-05-07 | 2018-10-17 | 株式会社デンソー | 燃料噴射装置 |
CN107246345A (zh) * | 2017-07-03 | 2017-10-13 | 芜湖市海联机械设备有限公司 | 一种耐高温喷嘴 |
US20220178335A1 (en) * | 2019-04-15 | 2022-06-09 | Cummins Inc. | Fuel injector with radially orientable nozzle holes using splines |
DE102020102194A1 (de) * | 2020-01-30 | 2021-08-05 | Man Energy Solutions Se | Kraftstoffeinspritzventil |
Citations (2)
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WO2005066487A1 (fr) * | 2004-01-12 | 2005-07-21 | Siemens Aktiengesellschaft | Procede pour serrer a bloc un ecrou de serrage de buse d'injecteur utilise pour l'injection de carburant, et injecteur et ecrou de serrage de buse |
DE102010001311A1 (de) * | 2010-01-28 | 2011-08-18 | Robert Bosch GmbH, 70469 | Verfahren zur hochdruckdichten Verbindung wenigstens eines plattenförmigen Körpers mit einem weiteren Körper eines Kraftstoffinjektors sowie Kraftstoffinjektor |
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2012
- 2012-05-15 DE DE102012208075A patent/DE102012208075A1/de not_active Withdrawn
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2013
- 2013-05-03 EP EP13166455.9A patent/EP2664782B1/fr active Active
- 2013-05-10 JP JP2013099955A patent/JP6388323B2/ja active Active
- 2013-05-13 KR KR1020130053781A patent/KR20130127933A/ko active Search and Examination
- 2013-05-14 US US13/894,145 patent/US10174729B2/en active Active
- 2013-05-15 CN CN201310178812.0A patent/CN103423052B/zh active Active
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Also Published As
Publication number | Publication date |
---|---|
JP6388323B2 (ja) | 2018-09-12 |
US10174729B2 (en) | 2019-01-08 |
KR20130127933A (ko) | 2013-11-25 |
JP2013238226A (ja) | 2013-11-28 |
DE102012208075A1 (de) | 2013-11-21 |
CN103423052A (zh) | 2013-12-04 |
US20140007845A1 (en) | 2014-01-09 |
CN103423052B (zh) | 2018-10-12 |
EP2664782A1 (fr) | 2013-11-20 |
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