WO2012150072A1 - Distributeur de carburant - Google Patents

Distributeur de carburant Download PDF

Info

Publication number
WO2012150072A1
WO2012150072A1 PCT/EP2012/054513 EP2012054513W WO2012150072A1 WO 2012150072 A1 WO2012150072 A1 WO 2012150072A1 EP 2012054513 W EP2012054513 W EP 2012054513W WO 2012150072 A1 WO2012150072 A1 WO 2012150072A1
Authority
WO
WIPO (PCT)
Prior art keywords
piece
distributor
valve
fuel distributor
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.)
Ceased
Application number
PCT/EP2012/054513
Other languages
German (de)
English (en)
Inventor
Markus Feigl
Holger UHRIG
Helmut Schneider
Nikolaus Hautmann
Dietmar Uhlenbrock
Martin GOEHNER
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
Priority to EP12711376.9A priority Critical patent/EP2705246B1/fr
Priority to CN201280021179.8A priority patent/CN103502627B/zh
Priority to PL12711376T priority patent/PL2705246T3/pl
Priority to RU2013153129/06A priority patent/RU2585673C2/ru
Publication of WO2012150072A1 publication Critical patent/WO2012150072A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • 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
    • F02M2200/90—Selection of particular materials
    • F02M2200/9015—Elastomeric or plastic materials

Definitions

  • the invention relates to a fuel distributor, in particular for
  • the invention relates to the field of as
  • Fuel rail is used, which is designed for high pressure applications made of steel or aluminum. As a result, a compressive strength for pressures of, for example, 20 MPa (200 bar) can be achieved.
  • a high-pressure steel rail can be produced as a soldering rail.
  • a steel tube serves as a base to which the individual components, such as e.g. Caps, screw-on, a high pressure port and interfaces to the injection valve, so-called cups, are soldered.
  • connection caps can be configured as turned or deep-drawn parts, while the connections can be configured as turned parts.
  • fuel rail assemblies may be used for low pressure applications at 0.3 MPa (3 bar) to 0.5 MPa (5 bar) for related applications.
  • the fuel distributor according to the invention with the features of claim 1 has the advantage that a fuel distributor with comparatively low production costs can be created, which may be suitable in particular for a medium pressure.
  • the fuel distributor can be designed particularly low by the individual components, in particular the valve cups, are attached with an advantageous connection technology to a distributor to be produced inexpensively. As a result, the fuel distributor can be produced inexpensively while achieving the desired strength and pressure resistance.
  • Fuel distributor to an engine block or the like can be done via the clamping part.
  • the clamping part may in this case be formed in an advantageous manner as a punched and bent part.
  • the clamping part can be configured in an advantageous manner as a clamping plate.
  • Such a clamping plate secures over the bias of the elastic deformation of the geometry of the secure connection of the assembled items.
  • a simple assembly technique can be used in which the items to the
  • the distributor piece is formed from at least one plastic.
  • the valve cups are formed from at least one plastic and optionally as an injection molded part.
  • the manifold may be tubular
  • Distributor that is designed as a manifold, be configured.
  • Distributor can be designed, for example, as a manufactured in the extrusion thick-walled plastic raw r. In order to achieve a sufficient compressive strength, in this case preferably several fabric layers with different winding angles are incorporated. This thick-walled plastic pipe is deflected to the desired length and provided with mounting holes for the valve cups.
  • the manifold can be made particularly inexpensive and easily adapted to the particular application, in particular the desired pressure range.
  • the clamping part can be formed in an advantageous manner from a non-alloy steel sheet. As corrosion protection here is optionally a surface coating of Steel sheet possible. Thus, the clamping part can be made particularly inexpensive. The clamping part then secures the joined assembly parts at operating pressure and allows the attachment of the fuel distributor on the engine block or the like. It is also advantageous that the valve cups each have a hollow mandrel which is inserted into a provided for the respective valve cup bore of the manifold.
  • a sealing ring is provided for each valve cup, which bears against an outer side of the manifold and the hollow mandrel of the respective valve cup surrounds, and that due to the bias of the clamping part of the sealing ring between the outside of the manifold and the respective valve cup a bias voltage is applied.
  • the bias of the sealing ring is not necessarily equal to the bias that exerts the clamping part on the valve cup.
  • an annular receiving groove may be provided on the valve cup, in which the sealing ring is at least partially inserted in order to compress the sealing ring and thus the
  • the sealing ring Limit the preload of the sealing ring. In this way, on the one hand, a defined pretensioning of the sealing ring is made possible so that an overstress is avoided and the sealing effect can be maintained over the service life.
  • the bias of the clamping member initially that is, during assembly, then be set correspondingly large, so that even with decreasing over time bias of the clamping part, the required for the sealing ring bias is still guaranteed.
  • the sealing effect between the individual valve cups and the manifold can be chosen so large that the required operating pressure can be reliably achieved.
  • a corresponding configuration, in particular with regard to the hollow mandrel and / or the sealing ring can also be used in other attachments, in particular a closure plug and a connection piece.
  • valve cups each have a channel which extends from the respective hollow mandrel to a valve receptacle and that the channel is angled at least approximately 90 °. This results in a space-saving
  • Embodiment in which in particular a distance between the manifold and an engine block can be optimized.
  • an end plug is provided, which closes a tubular ausgestaltetes distributor piece at one end, and that the clamping part the end plug against the tubular manifold with a bias
  • the end plug can also be fixed on the clamping piece on the manifold. Furthermore, the required sealing effect on the clamping part can be ensured.
  • the stopper can hereby in appropriate Sealed via a sealing ring which is disposed between the end plug and the tubular manifold. Accordingly, it is advantageous that a connection piece is provided, which is arranged at one end of the tubular distributor piece, and that the clamping part, the connection piece against the tubular
  • Fitting be fixed on the clamping part of the tubular manifold. About the bias of the clamping part in this case the desired sealing effect is achieved. In this case, a sealing ring may also be provided.
  • FIG. 1 shows a fuel distributor in a schematic, partial sectional view according to an embodiment of the invention.
  • Fig. 2 shows the fuel distributor shown in Fig. 1 in a schematic
  • Fig. 3 shows the fuel distributor shown in Fig. 1 in a schematic, excerpted sectional view of the designated III direction of view.
  • Fig. 1 shows an embodiment of a fuel distributor 1 of the invention in a schematic, partial sectional view.
  • the fuel distributor 1 can be configured in particular in the form of a fuel distributor strip 1.
  • Fuel distributor 1 is particularly suitable for fuel injection systems of
  • the fuel distributor 1 is suitable for a medium-pressure system.
  • the medium pressure for such a
  • Medium pressure system can be in the range of 3 MPa to 10 MPa or 30 bar to 100 bar.
  • the mean pressure may be in the range of 5 MPa to 7 MPa or 50 bar to 70 bar.
  • the fuel distributor 1 according to the invention is also suitable for other applications.
  • the fuel distributor 1 is designed in several pieces.
  • the fuel distributor 1 has a tubular distributor piece 2 and a plurality of valve cups 3, 4, 5, 6 arranged on the distributor piece 2.
  • four valve cups 3 to 6 are provided.
  • two or more such valve cups 3 to 6 may generally be provided here. Due to the multi-piece design of the
  • Fuel distributor 1 in this case a modular design is possible, so that, inter alia, a plurality of valve cups can be produced and the required number of such valve cups in the assembly of the respective fuel distributor 1 is used.
  • the tubular distributor piece 2 of the fuel distributor 1 is formed from a plastic.
  • the production preferably takes place by means of a plurality of fabric layers, which are incorporated at different winding angles. In this way, a thick-walled plastic pipe can be produced, from which the tubular distributor piece 2 is produced in the desired length by cutting to length.
  • the valve cups 3 to 6 are preferably formed as injection molded parts from a plastic.
  • the fuel distributor 1 also has a clamping part 10.
  • the clamping part 10 is preferably formed from a steel sheet, in particular a non-alloy steel sheet.
  • the clamping member 10 may be formed as a punched and bent part.
  • the clamping part 10 can be inexpensively formed as a clamping plate 10.
  • clamping part 10 also a coating
  • the clamping part 10 is then formed substantially as a clamping plate 10.
  • Fig. 2 shows the fuel distributor 1 shown in Fig. 1 in a schematic
  • FIG. 3 shows the fuel distributor 1 shown in Fig. 1 in a schematic, excerpts
  • the clamping part 10 has cuts 1 1, 12, of which only the cuts 1 1, 12 are marked for simplicity of illustration. Through the cuts 1 1, 12 it is possible that
  • Fixing portions 13, of which only the fixing portion 13 is shown, are formed by bending.
  • Such a fastening portion 13 may, for example, have a fastening bore 14, which in an installed position below the
  • tubular manifold 2 is located.
  • the incisions 1 1, 12 allow the forming of clamping angles 15, 16, 17, 18, which engage behind the individual cups 3 to 6 viewed from the manifold 2 from.
  • the clamping part 10 has a curved, cup-shaped receptacle 19. The receptacle 19 serves to receive the tubular distributor piece 2 and engages around this on an outer surface 20 of the tubular distributor piece 2.
  • the clamping part 10 is slightly bent, so that the clamping angle 15 to 18, the individual valve cups 3 to 6 act against the tubular manifold 2 with a bias.
  • the clamping member 10 is then biased.
  • the valve cups 3 to 6 each have a hollow mandrel 21, 22.
  • the hollow mandrels 21, 22 extend through bores 23, 24 of the tubular distributor piece 2.
  • the valve cups 3 to 6 are inserted with their hollow mandrels 21, 22 into the bores 23, 24 of the distributor piece 2.
  • a sealing ring 25, 26 is provided for each valve cup 3 to 6.
  • the sealing rings 25, 26 are in the mounted state on the outer surface (outer side) 20 of the tubular manifold 2 on. Furthermore, the sealing rings 25, 26 enclose the respective hollow mandrel 21, 22 of the valve cups 3 to 6. By the bias of the clamping member 10 are the
  • the bias voltage, with which the sealing rings 25, 26 respectively acted upon, may be less than is possible by the bias of the clamping member 10.
  • an overload, in particular overpressure the sealing rings 25, 26 is avoided.
  • 3 to 6 annular grooves 27, 28 are provided for this purpose on the valve cups. In these annular grooves 27, 28 of the valve cups 5 to 6, the sealing rings 25, 26 are at least partially inserted. During assembly, then the bias of the sealing rings 25, 26.
  • the structural design of the grooves 27, 28 in this case is the maximum stress of the sealing rings 25, 26, that is, the generated
  • the valve cups 3 to 6 each have a channel 29, 30.
  • the channel 29 extends through the hollow mandrel 21 and is also angled at least approximately at 90 °.
  • an axis 31 of a valve seat 32 of the valve cup 5 is at least approximately parallel to a fastening axis 33, which is in this
  • Embodiment is determined by the mounting hole 14. This results a compact design. Accordingly, the channel 30 of the valve cup 6 is angled at least approximately 90 °.
  • the fuel distributor 1 also has an end plug 40 and a
  • the stopper 40 is attached to one end 42 of the tubular manifold 2, while the fitting 41 is attached to an end 43 remote from the end 42 of the tubular manifold 2.
  • the tubular distributor piece 2 can be produced particularly inexpensively. Namely, after cutting the tubular manifold 2 to length and reworking the ends 42, 43 if necessary, the end plug 40 and the fitting 41 can be mounted. At a suitable time, preferably after cutting, the bores 23, 24 are mounted for the individual valve cups 3 to 6. The end plug 40 closes the end 42 of the tubular manifold 2.
  • a sealing ring 44 is provided between the end plug 40 and the end 42 of the manifold 2, which improves the seal.
  • End stop 40 fixed by a bracket 45 of the clamping member 10 and applied to the end 42 of the manifold 2 with a certain bias.
  • the connecting piece 41 and the end 43 of the manifold 2 a are also between the connecting piece 41 and the end 43 of the manifold 2 a
  • Sealing ring 46 is provided which improves the seal at the end 43.
  • the closure plug 40 is preferably designed as a free-falling injection molded part 40.
  • the selected arrangement of a sealing ring groove 48 into which the sealing ring 44 is inserted, or of the sealing ring 44, ensures that there is no degree of separation in the sealing area.
  • the end plug 40 may have a blind hole in the radial guide.
  • the sealing ring 44 is preferably designed as an O-ring 44.
  • the connecting piece 41 may be formed as an automatic turning part made of corrosion-resistant metal. Here, a standardized high-pressure connection can be selected.
  • the sealing ring 46 is also preferably designed as an O-ring 46.
  • valve cups 3 to 6 can be designed as freely falling injection molded parts 3 to 6.
  • the grooves 27, 28 serving as sealing grooves 27, 28 preferably no mold separation is provided.
  • they are preferable given uniform wall thicknesses.
  • the sealing rings 25, 26 are preferably also designed as O-rings 25, 26.
  • the assembly of the fuel distributor 1 can for example be done on a Montagerundtisch with two working positions. During assembly of a fuel distributor 1, the previously mounted tubular manifold 2 may be tightly tested. Then the valve cups 3 to 6, each equipped with a sealing ring 25, 26 and in the
  • the tubular distributor piece 2 can be pushed onto the hollow mandrels 21, 22 of the valve cups 3 to 6 serving as connecting pins.
  • the clamping part 10 can then be joined in a spreading device and pushed in the spread state together with the spreading over the joined components of the fuel distributor 1. Then the spreading device is withdrawn.
  • the joined clamping part 10 secures by the elastic deformation of its geometry then a secure connection of the individual components of the fuel distributor 1 even at operating pressure, in particular a medium pressure.
  • the invention is not limited to the described embodiments.

Landscapes

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

Abstract

La présente invention concerne un distributeur de carburant (1) notamment conçu pour des systèmes d'injection de carburant de moteurs à combustion interne à compression du mélange et à allumage commandé, lequel distributeur comprend un élément distributeur (2), plusieurs coupelles de soupape (3 à 6) placées sur l'élément distributeur (2), ainsi qu'une partie de serrage (10). Ladite partie de serrage (10) s'appuie sur la pièce distributeur (20) et sur les coupelles de soupape (3 à 6). De plus, la partie de serrage (10) est précontrainte et elle soumet les coupelles de soupape (3 à 6) à la précontrainte contre l'élément distributeur (2).
PCT/EP2012/054513 2011-05-02 2012-03-15 Distributeur de carburant Ceased WO2012150072A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP12711376.9A EP2705246B1 (fr) 2011-05-02 2012-03-15 Distributeur de carburant
CN201280021179.8A CN103502627B (zh) 2011-05-02 2012-03-15 燃料分配器
PL12711376T PL2705246T3 (pl) 2011-05-02 2012-03-15 Rozdzielacz paliwa
RU2013153129/06A RU2585673C2 (ru) 2011-05-02 2012-03-15 Топливный распределитель

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011075052A DE102011075052A1 (de) 2011-05-02 2011-05-02 Brennstoffverteiler
DE102011075052.5 2011-05-02

Publications (1)

Publication Number Publication Date
WO2012150072A1 true WO2012150072A1 (fr) 2012-11-08

Family

ID=45922668

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/054513 Ceased WO2012150072A1 (fr) 2011-05-02 2012-03-15 Distributeur de carburant

Country Status (6)

Country Link
EP (1) EP2705246B1 (fr)
CN (1) CN103502627B (fr)
DE (1) DE102011075052A1 (fr)
PL (1) PL2705246T3 (fr)
RU (1) RU2585673C2 (fr)
WO (1) WO2012150072A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10794350B1 (en) 2019-07-31 2020-10-06 Delphi Technologies Ip Limited Fuel line assembly having a fuel line and a fuel injector socket

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017104608B4 (de) 2017-03-06 2022-12-29 Gkn Powder Metallurgy Engineering Gmbh Rohrleitungsabschnitt einer Common-Rail-Leitung und Verfahren zu dessen Herstellung
EP3805546A1 (fr) * 2019-10-08 2021-04-14 Vitesco Technologies GmbH Ensemble rampe d'alimentation pour un moteur à combustion interne et procédé de fabrication d'un ensemble rampe d'alimentation

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2450357A1 (fr) * 1979-03-02 1980-09-26 Bosch Gmbh Robert Installation d'injection de carburant
EP0491582A1 (fr) * 1990-12-17 1992-06-24 Automobiles Peugeot Agencement pour le positionnement angulaire et le positionnement en hauteur de plusieurs injecteurs de carburant sur un moteur à combustion interne
DE19522067A1 (de) * 1994-07-15 1996-01-18 Ford Motor Co Kraftstoffeinspritz-Versorgungssammelleitung
DE19756102A1 (de) * 1997-12-17 1999-06-24 Bosch Gmbh Robert Montagevorrichtung zum Montieren von Brennstoffeinspritzventilen
US6178950B1 (en) * 1997-06-11 2001-01-30 Caterpillar Inc. Noise reducing bracket for a fuel injection system

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4111988C2 (de) * 1991-04-12 1994-07-14 Bosch Gmbh Robert Brennstoffverteiler
RU2078981C1 (ru) * 1994-03-29 1997-05-10 Фирма "Авангард" Топливопровод и устройство для крепления форсунки
DE19853090A1 (de) * 1998-11-18 2000-05-25 Bosch Gmbh Robert Brennstoffeinspritzanlage
ITBO20040114A1 (it) * 2004-02-27 2004-05-27 Magneti Marelli Powertrain Spa Collettore carburante bi-materiale per un motore a combustione interna con iniezione diretta del carburante e metodo per la sua realizzazione
US8079220B2 (en) * 2008-08-28 2011-12-20 Delavan Inc Fuel distribution manifold system for gas turbine engines
DE102009006607B4 (de) * 2009-01-29 2015-10-08 Benteler Automobiltechnik Gmbh Kraftstoffverteiler
DE102011075050A1 (de) * 2011-05-02 2012-11-08 Robert Bosch Gmbh Brennstoffverteiler

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2450357A1 (fr) * 1979-03-02 1980-09-26 Bosch Gmbh Robert Installation d'injection de carburant
EP0491582A1 (fr) * 1990-12-17 1992-06-24 Automobiles Peugeot Agencement pour le positionnement angulaire et le positionnement en hauteur de plusieurs injecteurs de carburant sur un moteur à combustion interne
DE19522067A1 (de) * 1994-07-15 1996-01-18 Ford Motor Co Kraftstoffeinspritz-Versorgungssammelleitung
US6178950B1 (en) * 1997-06-11 2001-01-30 Caterpillar Inc. Noise reducing bracket for a fuel injection system
DE19756102A1 (de) * 1997-12-17 1999-06-24 Bosch Gmbh Robert Montagevorrichtung zum Montieren von Brennstoffeinspritzventilen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"AUTOMOBILE NOUVELLE RAMPE D'INJECTION. \AUTOMOBILE NEW FUEL MANIFOLD", COMPOSITES.PLASTIQUES RENFORCES FIBRES DE VERRE TEXTILE, CENTRE DOC. VERRE TEXTILE PLAS RE. PARIS, FR, vol. 33, no. 2, 1 March 1993 (1993-03-01), pages 110, XP000362628, ISSN: 0754-0876 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10794350B1 (en) 2019-07-31 2020-10-06 Delphi Technologies Ip Limited Fuel line assembly having a fuel line and a fuel injector socket

Also Published As

Publication number Publication date
RU2585673C2 (ru) 2016-06-10
DE102011075052A1 (de) 2012-11-08
RU2013153129A (ru) 2015-06-10
EP2705246B1 (fr) 2015-01-14
PL2705246T3 (pl) 2015-06-30
EP2705246A1 (fr) 2014-03-12
CN103502627A (zh) 2014-01-08
CN103502627B (zh) 2016-05-11

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