EP2466110B1 - Agencement de fixation de fluide et système de fluide - Google Patents

Agencement de fixation de fluide et système de fluide Download PDF

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Publication number
EP2466110B1
EP2466110B1 EP20100195077 EP10195077A EP2466110B1 EP 2466110 B1 EP2466110 B1 EP 2466110B1 EP 20100195077 EP20100195077 EP 20100195077 EP 10195077 A EP10195077 A EP 10195077A EP 2466110 B1 EP2466110 B1 EP 2466110B1
Authority
EP
European Patent Office
Prior art keywords
fluid
threaded sleeve
coupling
tube element
fluid 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
Application number
EP20100195077
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German (de)
English (en)
Other versions
EP2466110A1 (fr
Inventor
Roberto Ricci
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.)
Continental Automotive GmbH
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Continental Automotive GmbH
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Filing date
Publication date
Application filed by Continental Automotive GmbH filed Critical Continental Automotive GmbH
Priority to EP20100195077 priority Critical patent/EP2466110B1/fr
Publication of EP2466110A1 publication Critical patent/EP2466110A1/fr
Application granted granted Critical
Publication of EP2466110B1 publication Critical patent/EP2466110B1/fr
Active legal-status Critical Current
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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
    • 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
    • F02M59/445—Selection of particular materials
    • 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
    • F02M2200/03—Fuel-injection apparatus having means for reducing or avoiding stress, e.g. the stress caused by mechanical force, by fluid pressure or by temperature variations

Definitions

  • the invention relates to a fluid fitting arrangement. Furthermore, the invention relates to a fluid system comprising such fluid fitting arrangement.
  • fittings are known that are welded, for example, on high-pressure fuel pumps. These fittings conventionally provide a hydraulic as well as a mechanical connection in one single element. Particularly with regard to the outlet connections of the high-pressure fuel pumps, these conventional fittings are subjected to fatigue stresses due to pressure pulsations of the fluid.
  • the fluid fitting arrangement of prior art document FR 2 872 252 comprises an intermediate part disposed in a junction fixed to a common rail at each connection which is arranged in a wall and comprises a conical flare whose base is oriented towards the outside of said rail and comprises a connector which is provided with an internal channel which is arranged in the junction and whose top end interacts with the end of the tube and whose low end interacts with said conical flare.
  • the fluid fitting arrangement comprises a first part of a fluid system.
  • the fluid fitting arrangement further comprises a coupling arrangement.
  • the coupling arrangement comprises a tube element for hydraulically coupling the first part of the fluid system with a second part of the fluid system.
  • the tube element is hydraulically coupled with the first part of the fluid system. Furthermore, the tube element is hydraulically coupleable with the second part of the fluid system.
  • the coupling arrangement further comprises a threaded sleeve for mechanically coupling the first part of the fluid system with the second part of the fluid system.
  • the threaded sleeve is mechanically coupled with the first part of the fluid system.
  • the threaded sleeve is further mechanically coupleable with the second part of the fluid system.
  • the coupling arrangement comprises two elements for providing the hydraulic and the mechanical coupling to the first part of the fluid system. Therefore, the threaded sleeve that provides the mechanical coupling is not subject to direct pressure pulsations since the fluid under pressure is guided only in the tube element during operation. Therefore, the coupling between the threaded sleeve and the first part of the fluid system, for example a high-pressure pump, is reliable and durable. Particularly, a tension force in direction away from the first part is only affected to the threaded sleeve. The tension force is not affected to the tube element. The tension force is for example affected due to the pressure pulsation of the fluid during operation.
  • a welded connection to couple the treaded sleeve with the first part is provided, wherein the tube element and the threaded sleeve are provided as separate parts.
  • the threaded sleeve surrounds the tube element coaxially and the threaded sleeve is radially disposed at a distance from the tube element.
  • the coupling of the coupling arrangement with the first part of the fluid system is particularly reliable, since the tube element primarily serves for the hydraulic coupling and the threaded sleeve primarily serves for the mechanical coupling. On the other hand, that means that the tube element primarily serves not for a mechanical coupling of the first part with the second part and the threaded sleeve primarily serves not for a hydraulic coupling of the first part with the second part.
  • the first part of the fluid fitting arrangement is a pump for the delivery of the fluid, for example a high-pressure pump for the delivery of fuel in a vehicle.
  • the coupling arrangement provides a reliable fluid supply to the high-pressure pump.
  • the coupling arrangement provides a reliable fluid supply on the outlet of the pump.
  • the fluid system comprises such a fluid fitting arrangement.
  • the fluid system further comprises the second part that is coupled to the coupling arrangement.
  • a coupling between the first and the second part of the fluid system is provided in which the hydraulic coupling and the mechanical coupling are separate from each other. Therefore, the coupling is reliable.
  • a tension force by the second part in direction away from the first part is only affected to the threaded sleeve.
  • the tension force is not affected to the tube element.
  • the tension force is for example affected due to the pressure pulsation of the fluid during operation.
  • the figure schematically shows a fluid fitting arrangement according to an embodiment.
  • the fluid fitting arrangement 100 comprises a first part 101 of a fluid system.
  • the first part 101 is part of a high-pressure pump for the delivery of the fluid.
  • the first part 101 is a housing of the pump.
  • the fluid fitting arrangement 100 further comprises a coupling arrangement 110.
  • the coupling arrangement 110 is coupled with the first part 101, for example with the housing of the pump 101.
  • the coupling arrangement comprises a tube element 111 and a threaded sleeve 112.
  • the threaded sleeve 112 comprises a hollow cylindrical form such that the threaded sleeve 112 surrounds the tube element 111 radially.
  • the threaded sleeve 112 surrounds the tube element 111 such that a distance 113 is disposed between the tube element 111 and the threaded sleeve 112 along the longitudinal extension of the threaded sleeve 112 and the tube element 111.
  • the threaded sleeve 112 comprises a thread 114 which provides a mechanical coupling interface for a second part 120 of the fluid system.
  • the tube element 111 and the threaded sleeve 112 of the coupling arrangement 110 are provided as separate parts.
  • the tube element 101 is hydraulically coupled with the pump 101. Further, the tube element 111 is coupled with the pump 101 via a welded connection 103. A first end of the tube element 111 is coupled with the pump 101 and the opposite end region of the tube element is hydraulically coupleable.
  • the tube element 111 provides a hydraulic interface to the pump 101 for a hydraulically coupling with the second part of the fluid system.
  • the threaded sleeve 112 of the coupling arrangement 110 is mechanically coupled to the pump 101 via a second welded connection 104.
  • a first end of the threaded sleeve 112 is coupled with the pump 101 and the opposite end region of the threaded sleeve is mechanically coupleable.
  • the threaded sleeve 112 provides a mechanical interface to the pump 101 for a coupling with the second part of the fluid system.
  • Each of the threaded sleeve 112 and the tube element 111 is coupled to the pump 101 by the respective welded connection 103, 104.
  • the welded connections 103 and 104 are separate as well.
  • the threaded sleeve 110 When the coupling arrangement 110 is coupled with the second part 120 of the fluid system during operation, the threaded sleeve 110 provides the mechanical coupling between the pump 101 and the second part 120.
  • the hydraulic coupling to the second part 120 is provided by the tube element 111.
  • the fluid is guided from the pump 101 via the tube element 111 to a tube 121 of the second part 120.
  • the threaded sleeve 111 is free of fluid and does not guide any fluid but secures the second part 120 to the pump 101, for example via a coupling nut 122 that is connected with the thread 114 of the threaded sleeve 112.
  • the nut 122 mechanically couples the second part 120 to the pump 101 via the threaded sleeve 111.
  • the threaded sleeve 121 is mechanically coupled to the pipe 121 that is hydraulically coupled to the tube element 111.
  • the mechanical coupling is particularly independent from the hydraulic coupling.
  • the welded connection 103 that couples the tube element 111 with the pump 101 primarily needs to resist the pressure of the fluid during operation.
  • the welding 104 primarily needs to resist the mechanical connection of the second part 120.
  • the welding 104 does primarily not need to resist the hydraulic pressure of the fluid guided through the coupling arrangement. Therefore, each of the welded connections 103 and 104 is particularly reliable.
  • the tube element 101 provides a hermetically sealed fluid connection from the pump 101 via the outlet valve 102 to the tube 121. Since the hermetic fluid connection is provided by the tube element 111, the welded connection 104 of the threaded sleeve 112 must not be a hermetic welding.
  • the coupling arrangement is part of an outlet valve 102 of the pump 101.
  • the outlet valve 102 is arranged in a cavity of the housing of the pump 101 and provides an outlet of the delivered fluid under high pressure.
  • the coupling between the tube element 111 and the housing of the pump 101 is provided by a threaded connection between the tube element and the pump.

Claims (7)

  1. Agencement de raccord de fluide (100), comprenant :
    - une première partie (101) d'un système de fluide ; et
    - un agencement d'accouplement (110), l'agencement d'accouplement comprenant :
    - un élément de tube (111) destiné à accoupler de manière hydraulique la première partie (101) du système de fluide à une seconde partie (120) du système de fluide, l'élément de tube (111) étant accouplé de manière hydraulique à la première partie (101) du système de fluide, et pouvant être accouplé de manière hydraulique à la seconde partie (120) du système de fluide ;
    - un manchon fileté (112) destiné à accoupler de manière mécanique la première partie (101) du système de fluide à la seconde partie (120) du système de fluide, le manchon fileté étant accouplé de manière mécanique à la première partie (101) du système de fluide, et pouvant être accouplé de manière mécanique à la seconde partie (120) du système de fluide ;
    - une connexion soudée (104) destinée à accoupler le manchon fileté (112) à la première partie (101), dans lequel :
    - l'élément de tube (111) et le manchon fileté (112) sont prévus en tant que parties distinctes ;
    - le manchon fileté (112) entoure l'élément de tube (111) de manière coaxiale ; et
    - le manchon fileté (112) est disposé de manière radiale à une certaine distance (113) de l'élément de tube (111) ;
    caractérisé en ce que l'agencement de raccord comprend une connexion soudée (103) destinée à accoupler l'élément de tube (111) à la première partie (101).
  2. Agencement de raccord de fluide selon la revendication 1, dans lequel le manchon fileté (112) présente une forme cylindrique creuse allongée.
  3. Agencement de raccord de fluide selon la revendication 1 ou la revendication 2, dans lequel le manchon fileté (112) comprend un filetage (114) destiné à accoupler de manière mécanique le manchon fileté (112) à la seconde partie (120) du système de fluide.
  4. Agencement de raccord de fluide selon l'une quelconque des revendications 1 à 3, dans lequel le manchon fileté (112) est exempt de fluide.
  5. Agencement de raccord de fluide selon l'une quelconque des revendications 1 à 4, dans lequel la première partie (101) est une pompe destinée à distribuer le fluide.
  6. Agencement de raccord de fluide selon la revendication 5, dans lequel l'agencement d'accouplement (110) fait partie d'une soupape de sortie (102) de la pompe (101).
  7. Système de fluide, comprenant :
    - un agencement de raccord de fluide selon l'une quelconque des revendications 1 à 6 ; et
    - la seconde partie (120), la seconde partie (120) étant accouplée à l'agencement d'accouplement (110).
EP20100195077 2010-12-15 2010-12-15 Agencement de fixation de fluide et système de fluide Active EP2466110B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20100195077 EP2466110B1 (fr) 2010-12-15 2010-12-15 Agencement de fixation de fluide et système de fluide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20100195077 EP2466110B1 (fr) 2010-12-15 2010-12-15 Agencement de fixation de fluide et système de fluide

Publications (2)

Publication Number Publication Date
EP2466110A1 EP2466110A1 (fr) 2012-06-20
EP2466110B1 true EP2466110B1 (fr) 2015-02-25

Family

ID=44012369

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20100195077 Active EP2466110B1 (fr) 2010-12-15 2010-12-15 Agencement de fixation de fluide et système de fluide

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Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE882157C (de) * 1950-06-18 1953-07-06 Rudolf Dipl-Ing Schenk Entlueftungsvorrichtung an Kraftstoff-Einspritzpumpen
DE19936535A1 (de) * 1999-08-03 2001-02-15 Bosch Gmbh Robert Kraftstoffhochdruckspeicher
DE10257953A1 (de) * 2002-12-12 2004-07-01 Robert Bosch Gmbh Injektor, insbesondere für Common-Rail-Einspritzsysteme von Brennkraftmaschinen, und Verfahren zur Herstellung eines solchen Injektors
FR2872252B1 (fr) * 2004-06-25 2008-03-14 Senior Automotive Blois Sas So Dispositif de connexion

Also Published As

Publication number Publication date
EP2466110A1 (fr) 2012-06-20

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