EP1373708B1 - Raccordement de deux elements montes l'un derriere l'autre coaxialement du systeme d'alimentation en carburant d'un moteur a combustion interne par l'intermediaire d'un etrier de retenue - Google Patents

Raccordement de deux elements montes l'un derriere l'autre coaxialement du systeme d'alimentation en carburant d'un moteur a combustion interne par l'intermediaire d'un etrier de retenue Download PDF

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Publication number
EP1373708B1
EP1373708B1 EP02729786A EP02729786A EP1373708B1 EP 1373708 B1 EP1373708 B1 EP 1373708B1 EP 02729786 A EP02729786 A EP 02729786A EP 02729786 A EP02729786 A EP 02729786A EP 1373708 B1 EP1373708 B1 EP 1373708B1
Authority
EP
European Patent Office
Prior art keywords
holding
connection
portions
holding clip
legs
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
EP02729786A
Other languages
German (de)
English (en)
Other versions
EP1373708A1 (fr
Inventor
Jochen Schoeffler
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
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1373708A1 publication Critical patent/EP1373708A1/fr
Application granted granted Critical
Publication of EP1373708B1 publication Critical patent/EP1373708B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion 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
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/004—Joints; Sealings
    • 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
    • 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

Definitions

  • the invention is based on a connection of two coaxially successively arranged elements of a Fuel supply system of an internal combustion engine according to the preamble of claims 1 and 7.
  • a compound which for fixing a pressure control valve in a receiving bush extending transversely to a fuel rail of a motor vehicle, the one through a Einiassöfmung the fuel rail in communication standing through hole having.
  • a bottom part of the pressure control valve in the through hole of the receiving socket used, the opposite each other in a wall two to each other and to a holding groove in the pressure control valve aligned slots, which is designed as a spring element, U-shaped Retaining clip with legs protruding, creating a pressure regulating valve in the receiving socket holding biasing force can be generated.
  • the housing of the pressure control valve and the receiving socket consist made of stainless steel.
  • the prior art retaining clips and securing clips are stamped and bent parts made of spring steel, in particular CK67, which then with a corrosion protection, for example be provided by galvanizing and Gelbchromatieren.
  • CK67 spring steel
  • galvanizing and Gelbchromatieren a corrosion protection
  • the invention is based on the idea that, in the case of a damaged anticorrosive layer, in addition to the by externally acting, aggressive media such as saline spray water conditional corrosion also to contact corrosion due to electro-chemical reactions between the stainless steel of the interconnected elements and the partially unprotected and less spring steel of the retaining clip and the fuse terminal can come.
  • the first element of the compound according to the invention is, for example, one with a fuel rail connected receiving socket, in the second element used as a pressure regulating valve is.
  • the legs of the retaining clip form at least partially complementary to a cylindrical Holding the pressure control valve shaped, an imaginary circular area enclosing circular arcs. The legs are bent before insertion into the holding openings in such a way that the circular area enclosed by the circular arcs has a smaller radius than the retaining groove. Then sits the retaining clip with radial bias and thus shake-tight in the retaining groove. Order hereby can break down any material stresses caused, the retaining clip after pre-bending and be tempered before insertion into the retaining openings.
  • a Fuel rail of a fuel injection system for internal combustion engines designated, which has a plurality of plug connections 2, in the Fuel injection valves are used with their one end.
  • a cup-shaped Receiving socket 3 connected, for example, soldered or welded.
  • the receiving socket 3 can also be on the fuel rail 1 be formed and / or at least partially in the fuel rail 1 protrude.
  • In the receiving socket 3 facing Wall 4 of the fuel rail 1 is at least one Inlet opening 5 is provided, which communicates with a connection opening 6 in Bottom 7 of the receiving socket 3 is aligned.
  • the inlet opening 5 and the Connection opening 6 may also have an annular shape.
  • a pressure regulating valve 8 used with a valve seat carrier body 9 by a first through opening 10 in the receiving socket 3 and ei ne second Through opening 11 in the wall 4 of the fuel rail 1 sealingly in an outlet 12 protrudes.
  • the outlet 12 protrudes into the fuel rail 1 and penetrates the pressure regulating valve 8 facing away wall 13 of the fuel rail 1 in an opening 14, in which it is tightly fastened, for example, soldered.
  • 11 can also Inlet openings 5 and the connection opening 6 are formed so large be that the valve seat carrier body 9 while maintaining a sufficient large cross-section around its circumference through the inlet opening 5 and the connection opening 6 can be passed.
  • Valve seat carrier body 9 protrudes with his from the pressure control valve. 8 outstanding end in a receiving bore 15 of the outlet 12 and is at its periphery with an elastic sealing ring sixteenth provided for sealing against the receiving bore 15.
  • the Outlet 12. penetrates in the axial direction an outlet channel 17, in a manner not shown also the valve seat carrier body. 9 penetrates and to a fuel tank or the suction side of a Fuel pump leads.
  • the fuel rail 1 is provided with a for scale reasons, not shown fuel supply line connected to the delivery port of the fuel pump is.
  • the inlet opening 5 and the connection opening 6 form a part of an inlet channel for the fuel in the pressure control valve 8.
  • the operation of such a pressure control valve is, for example known from DE 36 07 811 A1, therefore it should be on this will not be discussed further.
  • the valve housing of the pressure regulating valve 8 has a bottom part 19, which is inserted into the receiving socket 3 and the valve seat carrier body 9, which either as an independent part with the bottom part 19 is connected or part of the bottom part is.
  • the bottom part 19 has at its periphery a radially open sealing groove in which a in radial direction sealing sealing ring 27 is arranged.
  • the receiving socket 3 encloses the bottom part 19 of the pressure regulating valve eighth in the axial direction from the bottom 7 continuing in an area at least so far completely that a secure seal between the Bottom part 19 and the receiving socket 3 ensured by the sealing ring 27 is.
  • the receiving socket 3 has at its the fuel rail 1 facing away from a radially outwardly extending Flange 28, which is approximately parallel to the fuel rail 1 extends.
  • In a wall 30 of the receiving socket 3 are two opposing and extending in the circumferential direction Slits 31 formed.
  • the retaining clip consists of spring wire made of stainless steel according to DIN 17224, which has a chromium content of at least 12% and in particular also has a nickel content of at least 6%.
  • the retaining clip 32 spring wire made of X12 Cr Ni 17 7 (material number 1.4310).
  • the retaining clip 32 has two connected by a crossbar 33 Leg 34, which in the area of a to the crossbar 33 subsequent initial section 35 parallel to each other and in a central portion 36 complementary to a cylindrical one Holding groove 37 of the pressure regulating valve 8 shaped, an imaginary circular Form enclose circular arcs 38, which in an end portion 39 open, in which the legs 34 extend funnel-shaped.
  • the retaining clip 32 is in the inserted state against the Holding groove 37 radially biased, which achieved, for example is that the legs bent before assembly in such a way be that the circular area enclosed by them a smaller Radius than the retaining groove 37 has.
  • the retaining clip 32 preferably subsequently tempered, but due to the low degree of deformation is often not required.
  • the retaining clip 32 is preferably a planar member, i. her legs 34 are in a plane.
  • the circular arcs 38 of the middle section 36 corrugations be formed, which are in one plane extend perpendicular to a plane containing the retaining groove 37.
  • These corrugations can each be essentially one-periodic sinusoidal curve are formed, with the corrugation of the one Leg 34 opposite the corrugation of the other leg 34, for example 180 degrees out of phase.
  • the present in the wall 30 of the receiving socket 3 Slits 31 extend so deeply into them in the radial direction, that two residual sheets 40 remain with a width substantially the length of the traverse 33 and the distance between the two legs 34 corresponds to the retaining clip 32 in its end portion 39.
  • the Retaining clip 32 is so long that both in the mounting position her initial section 35 with the cross member 33 and her tricherförmig extended end portion 39 depending at least partially from the slots 31 protrude, so that the legs 34 in the region of the slots 31st existing, substantially parallel to the plane of the retaining clip 32nd extending and opposite end faces 41, 42 of the wall 30 of the receiving socket 3 intersect.
  • the Retaining clip 32 supported in the slots 31 of the receiving socket 3, whereby a holding force is generated, which the pressure regulating valve 8 at the bottom 7 of the receiving socket 3 stops.
  • FIG. 3 is a fuse terminal 43 for attaching an injector to the connector 2 of Fuel distribution line 1 shown.
  • the fuse terminal 43 has a L-shaped head plate 44 with two mutually perpendicular legs 45, 46, of which one leg 45 two symmetrical wings 47 vertically protrude away.
  • the fuse terminal 43 has a L-shaped head plate 44 with two mutually perpendicular legs 45, 46, of which one leg 45 two symmetrical wings 47 vertically protrude away.
  • FIGS. 4 and 5 have the wings 47 parallel to the other leg 46 of the top plate 44 extending sections 49 with mutually facing free edges, the an imaginary circular area partially enclosing Arcs 50 form.
  • the wings 47th extend in the direction of the free end of the one leg 45 of the Head plate 44 seen initially parallel to each other and widen then funnel-shaped, as Figure 4 shows.
  • both thighs 45, 46 of the Head plate 44 is also each a center, from the free end of the respective Leg 45, 46 outgoing bag slot 52, 53 formed.
  • the fuse terminal 43 is made of spring band of stainless Steel according to DIN 17224, which has a chromium content of at least 12% and in particular also a nickel content of at least 6%.
  • the fuse terminal spring band made of X12 Cr Ni 17 7 (material number 1.4310).

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  • 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)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)

Claims (9)

  1. Raccordement de deux éléments montés coaxialement l'un derrière l'autre pour un système d'alimentation en carburant d'un moteur à combustion interne, dont le premier élément (3) comporte une ouverture de guidage (18) et le deuxième élément (8) peut être inséré avec une section de guidage (19) dans l'ouverture de guidage (18) du premier élément (3), avec deux ouvertures de maintien (31) opposées dans une paroi (30) et alignées l'une par rapport à l'autre et par rapport à une rainure de maintien (37) dans le deuxième élément (8), et qui traversées par les branches (34) d'un étrier de maintien (32) en forme de U qui fixe ainsi la position des premier (3) et deuxième (8) éléments l'un par rapport à l'autre, ceux-ci ayant des segments en acier inoxydable au moins dans la zone de l'étrier de retenue (32),
    caractérisé en ce que
    l'étrier de maintien (32) est un fil d'acier pour ressort en acier inoxydable, les segments des premier (3) et deuxième (8) éléments au moins dans la zone de l'étrier de maintien (32) et l'étrier de maintien (32) étant de la même matière pour éviter des réactions électrochimiques entre l'étrier de retenue (32) et les segments des premier (3) et deuxième (8) éléments dans la zone de l'étrier (32).
  2. Raccordement selon la revendication 1,
    caractérisé en ce que
    le premier élément est une douille de réception (3) reliée à une rampe d'injection (1) et dans laquelle est inséré un détendeur (8) comme deuxième élément.
  3. Raccordement selon la revendication 1,
    caractérisé en ce que
    le premier élément est une douille de réception (3) reliée à une rampe d'injection (1) et dans laquelle est inséré un amortisseur de pression comme deuxième élément.
  4. Raccordement selon la revendication 2 ou 3,
    caractérisé en ce que
    les branches (34) de l'étrier de maintien (32) forment des arcs de cercle (38) entourant une surface de cercle imaginaire, formée au moins par segment de manière complémentaire à une rainure de maintien (37) cylindrique du détendeur (8) ou de l'amortisseur de pression.
  5. Raccordement selon la revendication 4,
    caractérisé en ce que
    les branches (34) de l'étrier (32) sont, avant d'être insérées dans les ouvertures de maintien (31), cintrées l'une par rapport à l'autre de telle sorte que la surface circulaire entourée par les arcs de cercle (38) a un rayon inférieur à la rainure de retenue (37).
  6. Raccordement selon la revendication 5,
    caractérisé en ce que
    l'étrier (32) est actionné après le cintrage et avant l'insertion dans les ouvertures de retenue (31).
  7. Raccordement de deux éléments montés coaxialement l'un derrière l'autre, d'un système d'alimentation en carburant d'un moteur à combustion interne, dans lequel le premier élément est un injecteur de carburant inséré par l'une de ses extrémités dans un raccord à fiche (2) d'une rampe d'injection (1) formant le deuxième élément, et y est fixé au moyen d'une pince de sécurité (43), l'injecteur de carburant et le raccord à fiche (2) présentant des segments en acier inoxydable au moins dans la zone de la pince de sécurité (43),
    caractérisé en ce que
    la pince de sécurité (43) est une bande à ressort en acier inoxydable, les segments de l'injecteur et du raccord à fiche (2) au moins dans la zone de la pince (43) et la pince (43) sont de la même matière pour éviter des réactions électrochimiques entre la pince (43) et les segmnets de l'injecteur et du raccord à fiche (2) dans la zone de l'étrier de blocage (43).
  8. Raccordement selon la revendication 7,
    caractérisé en ce que
    la pince de sécurité (43) comprend une plaque de tête (44) en forme de L avec deux branches (45, 46) perpendiculaires l'une par rapport à l'autre, dont deux ailettes symétriques (47) dépassent perpendiculairement de la branche (45) et présentent, parallèlement à l'autre branche (46) de la plaque de tête (44), des sections (49) dont les bords libres tournés l'un vers l'autre, forment des arcs de cercle (50) entourant une surface circulaire imaginaire, et dont des segments perpendiculaires (51) des ailettes (47) s'étendent en direction de l'extrémité libre de l'une des branches (45) de la plaque de tête (44), vu d'abord parallèlement l'un par rapport à l'autre, et s'élargissent ensuite en forme d'entonnoir, avec chaque fois une fente en poche (52, 53) médiane, partant de l'extrémité libre de chaque branche (45, 46), et formés dans les deux branches (45, 46) de la plaque de tête (44).
  9. Raccordement selon la revendication 1 ou 7,
    caractérisé en ce que
    le fil à ressort inoxydable, ou la bande à ressort inoxydable, présente une teneur en chrome d'au moins 12 % et notamment une teneur en nickel d'au moins 6 % selon la norme DIN 17224, et est composée notamment de X 12 Cr Ni 17 7, numéro de matériau 1.4310.
EP02729786A 2001-03-13 2002-03-13 Raccordement de deux elements montes l'un derriere l'autre coaxialement du systeme d'alimentation en carburant d'un moteur a combustion interne par l'intermediaire d'un etrier de retenue Expired - Lifetime EP1373708B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE20104270U DE20104270U1 (de) 2001-03-13 2001-03-13 Verbindung zweier koaxial hintereinander angeordneter Elemente einer Kraftstoffversorgungsanlage einer Brennkraftmaschine
DE20104270U 2001-03-13
PCT/DE2002/000892 WO2002073025A1 (fr) 2001-03-13 2002-03-13 Raccordement de deux elements montes l'un derriere l'autre coaxialement du systeme d'alimentation en carburant d'un moteur a combustion interne par l'intermediaire d'un etrier de retenue

Publications (2)

Publication Number Publication Date
EP1373708A1 EP1373708A1 (fr) 2004-01-02
EP1373708B1 true EP1373708B1 (fr) 2005-08-10

Family

ID=7954177

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02729786A Expired - Lifetime EP1373708B1 (fr) 2001-03-13 2002-03-13 Raccordement de deux elements montes l'un derriere l'autre coaxialement du systeme d'alimentation en carburant d'un moteur a combustion interne par l'intermediaire d'un etrier de retenue

Country Status (6)

Country Link
US (2) US20040045530A1 (fr)
EP (1) EP1373708B1 (fr)
KR (1) KR100852871B1 (fr)
DE (2) DE20104270U1 (fr)
RU (1) RU2003129073A (fr)
WO (1) WO2002073025A1 (fr)

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EP1849995B1 (fr) 2006-04-24 2011-08-10 Continental Automotive GmbH Agencement pour monter une soupape d'injection dans une rampe d'injection de carburant
DE602006009926D1 (de) * 2006-08-21 2009-12-03 Continental Automotive Gmbh Injektor, Kraftstoffzulaufbecher sowie Halter
JP4862778B2 (ja) * 2007-08-15 2012-01-25 日産自動車株式会社 燃料ダンパ固定用クリップ
US8206131B2 (en) * 2007-10-12 2012-06-26 Nippon Soken, Inc. Fuel pump
EP2148082B1 (fr) 2008-07-24 2011-10-19 Continental Automotive GmbH Arrangement de couplage pour une soupape d'injection et soupape d'injection
EP2221469B1 (fr) * 2009-02-18 2011-10-12 Continental Automotive GmbH Élément de fixation et ensemble d'injecteur de fluide
DE102012206887A1 (de) * 2012-04-26 2013-10-31 Robert Bosch Gmbh Anordnung mit einem Brennstoffverteiler und mehreren Brennstoffeinspritzventilen
CN102748180B (zh) * 2012-07-04 2014-10-29 力帆实业(集团)股份有限公司 汽车发动机燃气喷嘴安装支架
EP3309385A1 (fr) * 2016-10-12 2018-04-18 Continental Automotive GmbH Coupelle d'injecteur, pince à ressort, ensemble d'injection de fluide et son procédé d'assemblage
DE102017108270B4 (de) * 2017-04-19 2023-11-09 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Dichtungskassette für einen Injektor einer Verbrennungskraftmaschine und Injektoranordnung für eine Verbrennungskraftmaschine
WO2023069526A1 (fr) 2021-10-19 2023-04-27 Stanadyne Llc Bague de charge de retenue d'injecteur axisymétrique

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Also Published As

Publication number Publication date
US20060124110A1 (en) 2006-06-15
RU2003129073A (ru) 2005-03-27
DE50203885D1 (de) 2005-09-15
US20040045530A1 (en) 2004-03-11
DE20104270U1 (de) 2002-07-18
EP1373708A1 (fr) 2004-01-02
WO2002073025A1 (fr) 2002-09-19
KR100852871B1 (ko) 2008-08-20
KR20020097260A (ko) 2002-12-31

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