EP1076172A2 - Dispositif de distribution de combustible pour système d'injection de combustible de moteurs à combustion interne - Google Patents

Dispositif de distribution de combustible pour système d'injection de combustible de moteurs à combustion interne Download PDF

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Publication number
EP1076172A2
EP1076172A2 EP00116743A EP00116743A EP1076172A2 EP 1076172 A2 EP1076172 A2 EP 1076172A2 EP 00116743 A EP00116743 A EP 00116743A EP 00116743 A EP00116743 A EP 00116743A EP 1076172 A2 EP1076172 A2 EP 1076172A2
Authority
EP
European Patent Office
Prior art keywords
connection
area
line
outlet opening
distribution line
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.)
Withdrawn
Application number
EP00116743A
Other languages
German (de)
English (en)
Other versions
EP1076172A3 (fr
Inventor
Jürgen Bevc
Michael Schütte
Wolfram Müller
Heinrich Jun. Winkelmann
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.)
Winkelmann and Pannhoff GmbH
Original Assignee
Winkelmann and Pannhoff 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 Winkelmann and Pannhoff GmbH filed Critical Winkelmann and Pannhoff GmbH
Publication of EP1076172A2 publication Critical patent/EP1076172A2/fr
Publication of EP1076172A3 publication Critical patent/EP1076172A3/fr
Withdrawn legal-status Critical Current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
    • 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
    • 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 device for distribution of fuel for fuel injection systems of internal combustion engines with a tubular manifold with spaced apart along their length, each with an outlet opening in the distribution line aligned connection elements, each for recording of an injection valve are formed.
  • Such a device for gasoline engines is, for example known from DE 29 26 490 A1.
  • This known device a distributor line for low pressure injection systems from a thin-walled tube with soldered Sockets for connecting the injection valves.
  • This Connection sockets each have a snug fit, in the injection valves are radial using O-ring seals be sealed.
  • the injection valves become axial by a fastening element on the respective connection socket attached.
  • a non-generic type typical for high-pressure applications The device is described in DE 195 23 287 A1.
  • This device has a thick-walled distribution line Pipe on.
  • the connection with the injector does not take place directly in the branch element of Distribution line, but the branch element is used for Connection of a high pressure line, which in turn to the Injector leads and connected to this pressure-tight is.
  • the branch element itself consists of a manifold looping part and an adjoining Support. This nozzle is threaded. With an appropriate screw, both the Connection of the high pressure line to the distribution line sealed as well as the branch element on the distribution line fixed by linear contact.
  • This connection technology is a stress-free assembly possible.
  • Such a solution is for injection systems not usable where the injectors directly connected to the socket of the distribution line should be.
  • JP 00600010790 AA a device which consists of molded plastic components. It points the device has a manifold on that of connection areas is encompassed, in which an injection valve directly can be used.
  • DE 38 17 413 A1 is a generic device known in which the tubular manifold of is encompassed nozzle-shaped connecting elements, this Connection elements are not, however, for receiving injection valves trained, but they serve for inclusion of injection lines leading to injectors to lead.
  • a similar device is from EP 0 507 191 B1 known, also in the nozzle-shaped connection elements Injection lines lead to the Guide injectors. Both devices are for the use for fuel injection systems in the high pressure range suitable because the weakened connection area the distribution line completely from the nozzle-shaped Connection elements is surrounded. However these devices need further improvement, in particular regarding the type of manufacture.
  • the object of the invention is a generic device to evolve so that they can be used for fuel injection systems can be used in the high pressure range and the direct connection of the injection valves enables the distribution line, the manufacture such a device can be carried out as simply as possible should be.
  • connection elements a first, the pressure-stable distribution line all the way around its length, as well as pressure and gas-tight encompassing connection area and at least one firmly connected with this, with the respective Outlet opening aligned second nozzle-shaped valve receiving area have, the respective connection area additionally by a force or form fit in the vicinity of the outlet opening at the Distribution line is fixed.
  • the tubular Distribution line in terms of its wall thickness only thick-walled (for example 2 to 3 mm wall thickness) be as if it were a pipeline without Weakening of the pipe wall through outlet openings, because through the all-round fixed connection in each Outlet opening area with the respective connection element the weakening of the pipe wall completely is compensated, i.e. the pierced sections of the Distribution line through the comprehensive connection areas the connection elements specifically reinforced.
  • the Manufacturing the device is particularly simple, because first a pre-fixation of the respective connection area at the relevant point on the distribution line by a positive or non-positive connection.
  • connection areas of the connection elements Around the circumferential fixed as well as pressure and gas tight connection between the connection areas of the connection elements and can reach the distribution line either a cohesive connection of the connection areas be provided with the distribution line or a non-positive.
  • the cohesive connection comes soldering (or welding) into consideration, then of course the inside dimensions of the connection area with oversize compared to the outside diameter of the distribution line is made to the necessary soldering gap to provide.
  • the respective connection element can then with its connection area in a simple manner via the tubular distribution line pushed and at the desired Position positioned and fixed and then afterwards be attached pressure-tight all around.
  • a positive connection can be, for example, by a press fit or a shrink connection on simple Create way.
  • the distribution line consists of individual line sections which exists in the area of the respective outlet opening with the help of the assigned connection area are interconnected.
  • the line sections can also be more pressure stable, more flexible Hose or the like. Which is formed at the connection point provided with a suitable connector is.
  • the positive connection produced by a non-cutting forming process is.
  • the respective connection element is then attached to the desired one Position positioned on the distribution line or the line sections to be connected are inserted into the connector on both sides, then is used for pre-fixing or fastening Chipless forming process carried out.
  • a one-piece manifold for example at the same time as creating the outlet opening in the Distribution line a hole through a non-cutting forming process through the valve receiving area in the wall of the distribution line are introduced, whereby at the same time, an approach is developed that is one positive connection between the distribution line and the connecting element.
  • the respective Connection element in its position for the soldering process or another method for the integral connection fixed and can subsequently be soldered in a simple manner become.
  • a non-cutting high pressure forming process can also be used, which is not exclusively, but Particularly suitable if the distribution line is off several line sections is formed in the area a connecting element can be connected to each other. After inserting the ends of the pipe sections into the connection element, which already has a passage opening can by high pressure forming achieved that the edges of the pipe sections in the area of the passage opening into this deform into it and are held there positively.
  • the end piece of a distribution line can with a cap-shaped closed end Provide connection element and thus the distribution line be completed at the end.
  • connection area in level a circumferential groove on the inside of the outlet opening Includes the edges of the line sections.
  • connection element can then form-fit the edges in the groove.
  • Valve receiving area of the connection elements approaches has axial fixation of the associated injection valve. After inserting the respective injector then this is in the axial direction on the distributor line fixed.
  • connection element next to the at least a valve receiving area extended radially Has elements can be, for example one or more additional connecting pieces, e.g. one Pressure transducer, which of course with a another connection opening in the distribution line in Connection is established, act or by means of holding elements which the distribution line in the engine compartment to suitable Places can be attached.
  • a receiving socket for the injection valve is inserted.
  • Such an additional receptacle is used due to the heat load of the Components possibly occurring axial strains To be able to compensate for direction or angular direction.
  • a radial and / or axial sealing element is provided in the valve receiving area.
  • the radial one Sealing can be done in a manner known per se by means of an O-ring seal can take place, additionally or alternatively an axial seal can also be realized in which the seal between the end faces of the valve receiving area and the injection valve.
  • an axial seal can also be realized in which the seal between the end faces of the valve receiving area and the injection valve.
  • connection elements can be formed in one piece, alternatively, it can also be provided that the connection element each consists of several individual parts, which in a joint material connection process the distribution line.
  • the distribution line in areas between the connection elements are designed as pressure accumulators, preferably these areas in one of the circular shape deviated, preferably elliptical shape become.
  • the shaping can be done in any way a pressing process or by a hydroforming process respectively. With such a configuration it is possible to compensate for pressure fluctuations that for example as a result of different cycle numbers between the injection processes and the piston strokes of the Injection pump occur.
  • the design of the device with Pipe sections as a pressure accumulator is not just for that suitable configurations of the device described above, but also for already known devices generic type.
  • FIG. 1 is a first embodiment of a Fuel distribution device according to the invention for fuel injection systems of internal combustion engines shown in sections.
  • This device first has a tubular thick-walled distribution line 1, with thick-walled wall thicknesses of, for example 2 to 3 mm are to be understood.
  • This distribution line 1 are depending on the location, i.e. dependent on of the internal combustion engine type, over the length at a distance mutually arranged generally designated 2 Connection elements provided for connecting the distribution line 1 with one injector each, that shown in areas in Fig. 2 and designated 3 is.
  • connection element 2 has a first one, the distributor pipe 1 all round solid as well as pressure and gas tight encompassing connection area 4 and at least one with this firmly connected nozzle-shaped valve receiving area 5 on.
  • the execution of the respective connection element 2 can be in one piece, as shown in FIG. 1 and 2 is shown or in several parts, what follows is explained in more detail.
  • the respective nozzle-shaped valve receiving area 5 is arranged in the distribution line 1 so that it with an outlet opening provided in the distribution line 1 6 is aligned.
  • the nozzle-shaped valve receiving area 5 has on its free end area a circumferential thickened edge 7 on, on the outside, for example, on two opposite Side approaches 8 are provided for the axial Fix the associated injector 3 serve or more precisely for attaching one to such devices known mounting bracket 9.
  • This mounting bracket 9 holds the injection valve 3 axially in the valve receiving area 5.
  • a radial and / or axial sealing element is provided, in the embodiment according to FIG. 2, this is as O-ring seal 10 formed.
  • connection area 4 Around the all-round solid, pressure and gas-tight connection between the connection area 4 and the Ensure distribution line 1 are different Opportunities.
  • a material connection is provided, the connection area 4 is over its entire length soldered to the distribution line 1.
  • connection area 5 in its central area 5a has a larger inner diameter and thus as a press fit via the distribution line 1 can be pushed and pre-fixed on what then soldering in the other areas he follows.
  • the embodiment 3 shows that the respective connection elements 2 by a positive connection between the respective connection area 4 and the surrounding area the associated outlet opening 6 of the distribution line 1 are fixed.
  • This form fit is in the embodiment 3 produced by a non-cutting forming process, in such a way that first the respective Connection element 2 at the desired location on the distribution line 1 is positioned. Then becomes Generation of the outlet opening 6 in the distribution line 1 drilling through a non-cutting forming process the valve receiving area 5 into the wall of the Distributor line 1 introduced, whereby a Approach 11 is formed of a positive connection between the distribution line 1 and the Connection area 4 causes.
  • connection element 2 There are two initially separate parts, namely the connection area 4 and the nozzle-shaped valve receiving area 5. These are initially through the aforementioned Process pre-fixed and are then in the connection area soldered together so that again a one-piece component is created.
  • the distributor line is which is only shown in sections, by individuals Line sections 1a formed. These line sections 1a are in the area of the respective outlet opening 6 with the help of the assigned connection area 4 connected with each other.
  • the line sections 1a with their ends to be connected in the connection area 4 used on both sides and preferably by means of High pressure forming without cutting, form-fitting, such that the corresponding edge area during the forming process or edge 15 of the two line sections 1a in the passage opening 16 of the connection area 4 is deformed.
  • the Gap geometry set accordingly during the forming process can be the desired fuel passage regardless of the passage opening 16 of the connection area 4 to be able to adjust.
  • the distribution line can be a continuous one Distribution line 1 or a corresponding one Act line section 1a, which ends with a Connection area 4 of the connection element 2 closed becomes. This is done on the outside in the relevant connection element or the relevant connection area 4 a Cap 17 inserted tightly and firmly. The attachment is thereby facilitated or improved, that in connection area 4 at the level of the outlet opening 6 inside a circumferential groove 18 for receiving the outwardly deformed edges 15 of the line section 1a or the distribution line 1 is provided. During high pressure forming, the edges 15 can then form fit into this groove 18.
  • Such Groove 18 can also be provided in the embodiment according to FIG. 4 his.
  • connection element 2 next to the at least one valve receiving area 5 further radially has extended areas, namely in the illustrated Embodiment a via an unrecognizable hole connected to the distribution line 1 Connection piece 12, for example for the connection a pressure regulator, and a holding element 13 for attachment the entire distribution line 1 in the engine compartment.
  • connection piece 12 for example for the connection a pressure regulator
  • holding element 13 for attachment the entire distribution line 1 in the engine compartment.
  • the injector is not directly in the valve receiving area 5 is used, but with interposition a receptacle 14, which is used to if necessary, thermal expansion in the axial direction and To be able to compensate for the angular direction.
  • This connector 14 is with the mounting bracket 9 on the valve receiving area 5 held.
  • FIG. 8 and 9 is a further embodiment of an inventive Device shown which a Detail with two connecting elements 2 shows.
  • Essential in this embodiment is that the distribution line 1 in areas between the connection elements 2 is designed as a pressure accumulator. These areas are designated 1b.
  • these areas 1b are in one from the circular shape.
  • Preferably these areas are elliptical, as in FIG. 9 emerges.
  • This shape can be in any way by a pressing process or by a hydroforming process respectively. With such a configuration it is possible to compensate for pressure fluctuations, for example as a result of different cycle numbers between the injection processes and the piston strokes of the Injection pump occur.

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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)
EP00116743A 1999-08-07 2000-08-03 Dispositif de distribution de combustible pour système d'injection de combustible de moteurs à combustion interne Withdrawn EP1076172A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1999137444 DE19937444C1 (de) 1999-08-07 1999-08-07 Vorrichtung zur Verteilung von Kraftstoff für Kraftstoffeinspritzanlagen von Verbrennungsmotoren
DE19937444 1999-08-07

Publications (2)

Publication Number Publication Date
EP1076172A2 true EP1076172A2 (fr) 2001-02-14
EP1076172A3 EP1076172A3 (fr) 2003-10-01

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EP00116743A Withdrawn EP1076172A3 (fr) 1999-08-07 2000-08-03 Dispositif de distribution de combustible pour système d'injection de combustible de moteurs à combustion interne

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EP (1) EP1076172A3 (fr)
DE (1) DE19937444C1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016159932A1 (fr) * 2015-03-27 2016-10-06 Cummins Inc. Accumulateur de systèmes de carburant forgé rotatif ovalisé

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6598592B2 (en) * 2000-10-04 2003-07-29 Seimens Automotive Corporation Fuel system including a fuel injector internally mounted to a fuel rail
DE10115322A1 (de) * 2001-03-28 2002-10-17 Bosch Gmbh Robert Kraftstoff-Einspritzvorrichtung für Brennkraftmaschinen, insbesondere Common-Rail-Injektor
DE10123234A1 (de) * 2001-05-12 2002-11-28 Bosch Gmbh Robert Kraftstoffhochdruckspeicher mit optmierter Geometrie
US6959695B2 (en) * 2001-10-17 2005-11-01 Robert Bosch Corporation Multi-point fuel injection module
US6651327B1 (en) * 2001-12-10 2003-11-25 Dana Corporation Method of making hydroformed fuel rails
DE10163030B4 (de) * 2001-12-20 2014-10-09 Robert Bosch Gmbh Befestigungsvorrichtung
DE10229904A1 (de) * 2002-07-03 2004-01-15 Robert Bosch Gmbh Dosiereinrichtung
DE10248800A1 (de) * 2002-10-19 2004-04-29 Robert Bosch Gmbh Innendruckbelastetes Bauteil, sowie Verfahren zur Herstellung eines innendruckbelasteten Bauteils mit nicht zylindrischem Querschnitt
DE10307530B4 (de) * 2003-02-21 2006-07-27 Benteler Automobiltechnik Gmbh Befestigungselement für eine Kraftstoffverteilerleiste für Brennkraftmaschinen
DE102004037787B4 (de) * 2004-08-03 2006-05-18 Benteler Automobiltechnik Gmbh Kraftstoffzuführung für eine Verbrennungsmaschine mit Direkteinspritzung
EP2077390B1 (fr) * 2008-01-07 2012-09-05 Continental Automotive GmbH Agencement de couplage et ensemble de connexion
DE102012106585A1 (de) * 2012-07-20 2014-01-23 Benteler Automobiltechnik Gmbh Verfahren zur Herstellung einer Hochdruckkraftstoffleitung
JP6343444B2 (ja) 2013-12-20 2018-06-13 三桜工業株式会社 燃料分配供給装置
DE102017104608B4 (de) 2017-03-06 2022-12-29 Gkn Powder Metallurgy Engineering Gmbh Rohrleitungsabschnitt einer Common-Rail-Leitung und Verfahren zu dessen Herstellung

Citations (9)

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Publication number Priority date Publication date Assignee Title
DE2926490A1 (de) 1979-06-30 1981-02-05 Bosch Gmbh Robert Kraftstoffeinspritzanlage
DE3817413A1 (de) 1987-05-23 1988-12-08 Usui Kokusai Sangyo Kk Verbindungsanordnung fuer abzweigrohre in einem hochdruckkraftstoff-rohrverteiler
DE4115144A1 (de) 1990-05-08 1991-11-28 Usui Kokusai Sangyo Kk Einrichtung zur kraftstoffverteilung
JPH0610790A (ja) 1992-06-30 1994-01-18 Usui Internatl Ind Co Ltd フユーエルデリバリパイプの製造方法
EP0507191B1 (fr) 1991-04-04 1994-09-21 Toyota Jidosha Kabushiki Kaisha Dispositif d'injection de combustible pour moteur à combustion interne
DE19523287A1 (de) 1994-06-28 1996-01-04 Usui Kokusai Sangyo K Ltd Verbindungsanordnung zum Verbinden eines Abzweigelementes mit einer Hochdruck-Kraftstoffschiene
DE19606946C2 (de) 1996-02-23 1998-02-19 Mtu Friedrichshafen Gmbh Anschlußverbindung einer Kraftstoffhochdruckleitung an eine ortsfeste Anschlußstelle
DE19744762A1 (de) 1997-03-18 1998-10-01 Poppe & Potthoff Gmbh & Co Einspritzeinrichtung für einen Dieselmotor
DE19744094A1 (de) 1997-10-06 1999-05-27 Siemens Ag Einspritzsystem für eine Brennkraftmaschine

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JPS6010790A (ja) * 1983-06-30 1985-01-19 Matsushita Electric Works Ltd 太陽電池の電極形成方法
JP2803383B2 (ja) * 1991-04-08 1998-09-24 トヨタ自動車株式会社 高圧流体用継手
JP3897183B2 (ja) * 1996-06-27 2007-03-22 臼井国際産業株式会社 コモンレール
DE60115629T2 (de) * 2000-03-21 2006-06-29 Siemens Ag Brennstoffeinspritzvorrichtung zur befestigung und ausrichtung eines brennstoffeinpritzventiles zu einem brennstoffverteiler

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2926490A1 (de) 1979-06-30 1981-02-05 Bosch Gmbh Robert Kraftstoffeinspritzanlage
DE3817413A1 (de) 1987-05-23 1988-12-08 Usui Kokusai Sangyo Kk Verbindungsanordnung fuer abzweigrohre in einem hochdruckkraftstoff-rohrverteiler
DE4115144A1 (de) 1990-05-08 1991-11-28 Usui Kokusai Sangyo Kk Einrichtung zur kraftstoffverteilung
EP0507191B1 (fr) 1991-04-04 1994-09-21 Toyota Jidosha Kabushiki Kaisha Dispositif d'injection de combustible pour moteur à combustion interne
JPH0610790A (ja) 1992-06-30 1994-01-18 Usui Internatl Ind Co Ltd フユーエルデリバリパイプの製造方法
DE19523287A1 (de) 1994-06-28 1996-01-04 Usui Kokusai Sangyo K Ltd Verbindungsanordnung zum Verbinden eines Abzweigelementes mit einer Hochdruck-Kraftstoffschiene
DE19606946C2 (de) 1996-02-23 1998-02-19 Mtu Friedrichshafen Gmbh Anschlußverbindung einer Kraftstoffhochdruckleitung an eine ortsfeste Anschlußstelle
DE19744762A1 (de) 1997-03-18 1998-10-01 Poppe & Potthoff Gmbh & Co Einspritzeinrichtung für einen Dieselmotor
DE19744094A1 (de) 1997-10-06 1999-05-27 Siemens Ag Einspritzsystem für eine Brennkraftmaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016159932A1 (fr) * 2015-03-27 2016-10-06 Cummins Inc. Accumulateur de systèmes de carburant forgé rotatif ovalisé

Also Published As

Publication number Publication date
DE19937444C1 (de) 2001-01-18
EP1076172A3 (fr) 2003-10-01

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