EP1918572B1 - Rampe commune de carburant - Google Patents

Rampe commune de carburant Download PDF

Info

Publication number
EP1918572B1
EP1918572B1 EP20060022239 EP06022239A EP1918572B1 EP 1918572 B1 EP1918572 B1 EP 1918572B1 EP 20060022239 EP20060022239 EP 20060022239 EP 06022239 A EP06022239 A EP 06022239A EP 1918572 B1 EP1918572 B1 EP 1918572B1
Authority
EP
European Patent Office
Prior art keywords
piece
fuel rail
internal combustion
combustion engine
fuel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP20060022239
Other languages
German (de)
English (en)
Other versions
EP1918572A1 (fr
Inventor
Antonio Liuzzo
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
Original Assignee
Continental Automotive GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Continental Automotive GmbH filed Critical Continental Automotive GmbH
Priority to DE200660009821 priority Critical patent/DE602006009821D1/de
Priority to EP20060022239 priority patent/EP1918572B1/fr
Publication of EP1918572A1 publication Critical patent/EP1918572A1/fr
Application granted granted Critical
Publication of EP1918572B1 publication Critical patent/EP1918572B1/fr
Not-in-force legal-status Critical Current
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
    • 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
    • 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
    • F02M69/462—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down
    • F02M69/465—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down of fuel rails

Definitions

  • the invention relates to a fuel rail for an internal combustion engine.
  • US 4,457,280 discloses a fuel rail assembly for holding a plurality of electromechanical fuel injector elements in aligned positions on an internal combustion engine.
  • the beam portion of the fuel rail is comprised of two elongated manifold members with overlapping sides brazed together.
  • One of the manifold members has a series of planar sides with apertures for retaining and precisely aligning a plurality of injector cups.
  • the injector cups are mounted with their cavities in close proximity to the inside of the fuel rail.
  • the fuel rail is structurally designed for ease of assembly and to provide adequate rigidity without excessive weight.
  • a fuel rail with a middle-piece and two side-pieces is known from DE-A-19 936 685 .
  • the invention is distinguished by a fuel rail for an internal combustion engine.
  • the fuel rail comprises a first and a second side-piece, a middle-piece, at least one connection at each of the pieces, and an inlet for supplying the fuel rail with fuel.
  • the middle-piece is arranged between the first and the second side-piece moveable relative to the first and the second side-piece.
  • the middle-piece is hydraulically and sealingly coupled to the first and the second side-piece.
  • the connections are arranged for connecting each piece of the fuel rail to at least one injection valve of the internal combustion engine.
  • the movability of the middle-piece relative to the side-pieces enables to use the fuel rail for different internal combustion engines.
  • the movability of the middle-piece relative to the side-pieces enables to use the fuel rail for different internal combustion engines which have different distances from one injection valve of the internal combustion engine to another injection valve of the internal combustion engine.
  • the middle-piece is partially arranged in the first and/or the second side-piece. This contributes to hydraulically and sealingly coupling the middle-piece to the side-pieces in an easy way.
  • the first and/or second side-piece is partially arranged in the middle-piece. This contributes to hydraulically and sealingly coupling the middle-piece to the side-pieces in an easy way.
  • the middle-piece and/or the first and/or the second side-piece comprises a bracket for fixing the fuel rail to the internal combustion engine. This enables to fix the fuel rail to the internal combustion engine in an easy way. Further, this may contribute to stabilize the fuel rail.
  • the fuel rail comprises at least one supporting bracket for fixing the middle-piece to the first and/or the second side-piece. This contributes to stabilize the fuel rail.
  • the middle-piece and the first and/or the second side-piece comprise an overlapping area.
  • a surface of the overlapping area comprises a given roughness for sealingly coupling the middle-piece to the first and, respectively, the second side-piece. This very effectively contributes to sealingly coupling the middle-piece to the first and, respectively, the second side-piece.
  • a sealing is arranged between the middle-piece and the side-pieces at the surface of the overlapping area. The sealing and the given roughness of the surface in the overlapping area may contribute very effectively to the proper sealed coupling.
  • a fuel rail 2 ( figure 1 ) comprises a middle-piece 4, a first side-piece 6 and a second side-piece 8.
  • the fuel rail 2 is arranged at an internal combustion engine.
  • the fuel rail 2 is arranged for storing fuel with a given pressure and to supply at least one, preferably more injection valves of the internal combustion engine with fluid at the given pressure.
  • Each of the pieces of the fuel rail 2 comprises at least one connection 10 for connecting the fuel rail 2 to the injection valves.
  • the first and/or the second side-piece 6, 8 comprise a bracket 12.
  • the brackets 12 are arranged for fixing the fuel rail 2 to the internal combustion engine.
  • the fuel rail 2 may comprise different devices for fixing the fuel rail 2 to the internal combustion engine.
  • the middle-piece 4 and/or the first and/or the second side-piece 6, 8 may comprise a supporting bracket 14 which may be fixed to the middle-piece by a screw 16 and a corresponding thread 18 at the middle-piece 4 and, respectively, at the first and/or the second side-piece 6, 8.
  • the supporting bracket 14 comprises a slot for taking in the screw 16.
  • the middle-piece 4 is at least partially arranged in the first and/or second side-piece 6, 8.
  • the middle-piece 4 is arranged in the first and/or second side-piece 6, 8 in such a way that it is movable relative to the first and/or the second side-piece 6, 8.
  • the middle-piece 4 is movable relative to the first and/or the second side-piece 6, 8 in a direction which is parallel to the long side of the middle-piece 4.
  • the pieces of the fuel rail 2 are for example tube-shaped
  • the middle-piece 4 is movable relative to the first and/or the second side-piece 6, 8 in a direction parallel to an axis of the middle-piece 4.
  • the pieces of the fuel rail 2 may be shaped rectangular.
  • the middle-piece 4 may comprise a recess 20 for partially taking in a sealing 22.
  • the recess 20 comprises a groove at an outer shell of the middle-piece 4 next to an axial end of the middle-piece 4.
  • the sealing 22 preferably is an O-ring. If the middle-piece 4 and the first and the second side-piece 6, 8 are not tube shaped, for example rectangular, the sealing 22 has a corresponding form which guarantees a hydraulically sealed coupling of the middle-piece 4 to the first and/or the second side-piece 6, 8.
  • the middle-piece 4 and the side-pieces comprise an overlapping area.
  • the sealing 22 is arranged in the overlapping area.
  • a surface of the overlapping area, at which the sealing 22 is arranged comprises a given roughness.
  • the given roughness and the sealing 22 may contribute to improve the sealing of the coupling between the middle-piece 4 and the side-pieces.
  • the middle-piece 4 is adjusted relative to the first and the second side-piece 6, 8 in such a way that the connections 10 fit to the positions of the injection valves of the internal combustion engine.
  • the fuel rail 2 preferably is adjusted by moving the middle-piece 4 relative to the first and/or the second side-piece 6, 8.
  • the internal combustion engine comprises six or twelve injection valves two or, respectively, four fuel rails 2 may be combined.
  • the fuel rail 2 may comprise further side-pieces for adjusting the fuel rail 2 to an internal combustion engine with more than three injection valves.
  • first and/or the second side-piece 6, 8 are partially arranged in the middle-piece 4 ( figure 2 ).
  • the first side-piece 6 may be partially arranged in the middle-piece 4 and the middle-piece 4 may be partially arranged in the second side-piece 8.
  • the middle-piece 4 my comprise more than one, in particular two connections 10 ( figure 3 ). This enables to use the fuel rail 2 for internal combustion engines which comprise four, eight, or twelve injection valves in an easy way.
  • the third embodiment of the fuel rail 2 enables to adjust the outer connections 10 of the fuel rail 2 to the position of the injection valves of the internal combustion engine.
  • the invention is not restricted by the explained embodiments.
  • the embodiments may be combined.
  • the second and/or the third and/or further embodiments of the fuel rail 2 may comprise the supporting brackets 14.
  • the middle-piece 4, the first and/or the second side-piece 6, 8 may comprise further brackets 12 and/or further connections 10.
  • further side-pieces may be arranged for adjusting the fuel rail 2 to internal combustion engines which comprise more than three injection valves.

Landscapes

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

Claims (6)

  1. Rail (2) à carburant destiné à un moteur à combustion interne, comprenant
    - une première et une deuxième pièce latérale (6, 8),
    - une pièce médiane (4) qui se trouve entre les première et une deuxième pièces latérales (6, 8), mobile par rapport aux première et deuxième pièces latérales (6, 8), et qui est couplée par voie hydraulique et hermétiquement aux première et deuxième pièces latérales (6, 8),
    - au moins un raccord (10) au niveau de chacune des pièces, qui permet connecter chaque pièce à au moins une soupape d'injection du moteur à combustion interne,
    - un orifice d'entrée permettant de faire entrer du carburant dans le rail (2) à carburant.
  2. Rail (2) à carburant selon la revendication 1, dans lequel la pièce médiane (4) est en partie disposée dans la première et/ou la deuxième pièce latérale (6, 8).
  3. Rail (2) à carburant selon la revendication 1, dans lequel la première et/ou la deuxième pièce latérale (6, 8) est en partie disposée dans la pièce médiane (4).
  4. Rail (2) à carburant selon une des revendications précédentes, où la pièce médiane (4) et/ou la première et/ou la deuxième pièce latérale (6, 8) comprend un support (12) permettant de fixer le rail (2) à carburant au moteur à combustion interne.
  5. Rail (2) à carburant selon une des revendications précédentes, comprenant au moins un support (14) de soutien permettant de fixer la pièce médiane (4) à la première et/ou à la deuxième pièce latérale (6, 8).
  6. Rail (2) à carburant conformément à l'une des revendications précédentes, où la pièce médiane (4) et la première et/ou la deuxième pièce latérale (6, 8) comprend une zone de chevauchement, et où une surface (24) de cette zone de chevauchement présente une rugosité particulière permettant de coupler de manière étanche la pièce médiane (4) à la première et à la deuxième pièce latérale (6, 8) respectivement.
EP20060022239 2006-10-24 2006-10-24 Rampe commune de carburant Not-in-force EP1918572B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE200660009821 DE602006009821D1 (de) 2006-10-24 2006-10-24 Kraftstoffdruckspeicher
EP20060022239 EP1918572B1 (fr) 2006-10-24 2006-10-24 Rampe commune de carburant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20060022239 EP1918572B1 (fr) 2006-10-24 2006-10-24 Rampe commune de carburant

Publications (2)

Publication Number Publication Date
EP1918572A1 EP1918572A1 (fr) 2008-05-07
EP1918572B1 true EP1918572B1 (fr) 2009-10-14

Family

ID=37575108

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20060022239 Not-in-force EP1918572B1 (fr) 2006-10-24 2006-10-24 Rampe commune de carburant

Country Status (2)

Country Link
EP (1) EP1918572B1 (fr)
DE (1) DE602006009821D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2576759C1 (ru) * 2015-03-20 2016-03-10 Федеральное государственное унитарное предприятие "Центральный ордена Трудового Красного Знамени научно-исследовательский автомобильный и автомоторный институт "НАМИ" Устройство для раздачи топлива к форсункам двигателя внутреннего сгорания

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19936685A1 (de) * 1999-08-04 2001-02-22 Bosch Gmbh Robert Kraftstoffhochdruckspeicher
JP2002089401A (ja) * 2000-09-18 2002-03-27 Hitachi Ltd 燃料供給装置
FI117349B (fi) * 2002-08-02 2006-09-15 Waertsilae Finland Oy Polttoaineen syöttöjärjestelmä
DE102004055266A1 (de) * 2004-11-17 2006-05-18 Robert Bosch Gmbh Kraftstoffeinspritzanlage mit mehreren Druckspeichern
DE102005012165B4 (de) * 2005-03-17 2007-02-08 L'orange Gmbh Kraftstoffspeicher eines Kraftstoffeinspritzsystems für mehrzylindrige Brennkraftmaschinen und Mengenbegrenzungsventil für einen solchen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2576759C1 (ru) * 2015-03-20 2016-03-10 Федеральное государственное унитарное предприятие "Центральный ордена Трудового Красного Знамени научно-исследовательский автомобильный и автомоторный институт "НАМИ" Устройство для раздачи топлива к форсункам двигателя внутреннего сгорания

Also Published As

Publication number Publication date
EP1918572A1 (fr) 2008-05-07
DE602006009821D1 (de) 2009-11-26

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