EP3199794A1 - Rampe de distribution de carburant et son procede de fabrication - Google Patents

Rampe de distribution de carburant et son procede de fabrication Download PDF

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Publication number
EP3199794A1
EP3199794A1 EP16153634.7A EP16153634A EP3199794A1 EP 3199794 A1 EP3199794 A1 EP 3199794A1 EP 16153634 A EP16153634 A EP 16153634A EP 3199794 A1 EP3199794 A1 EP 3199794A1
Authority
EP
European Patent Office
Prior art keywords
base tube
fuel rail
fuel
rail according
connection
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.)
Granted
Application number
EP16153634.7A
Other languages
German (de)
English (en)
Other versions
EP3199794B1 (fr
Inventor
Uwe Fiedler
Manouchehr Kambakhsh
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.)
TI Automotive Heidelberg GmbH
Original Assignee
TI Automotive Heidelberg 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 TI Automotive Heidelberg GmbH filed Critical TI Automotive Heidelberg GmbH
Priority to EP16153634.7A priority Critical patent/EP3199794B1/fr
Priority to CN201710055371.3A priority patent/CN107023428B/zh
Priority to JP2017015296A priority patent/JP6845701B2/ja
Priority to US15/420,432 priority patent/US10260469B2/en
Priority to KR1020170014431A priority patent/KR20170091531A/ko
Publication of EP3199794A1 publication Critical patent/EP3199794A1/fr
Application granted granted Critical
Publication of EP3199794B1 publication Critical patent/EP3199794B1/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
    • 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
    • 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
    • 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
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • 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
    • F02M2200/8069—Fuel injection apparatus manufacture, repair or assembly involving removal of material from the fuel apparatus, e.g. by punching, hydro-erosion or mechanical operation
    • 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
    • F02M2200/8084—Fuel injection apparatus manufacture, repair or assembly involving welding or soldering

Definitions

  • the invention relates to a fuel rail for a fuel injection for internal combustion engines in motor vehicles, in particular for gasoline engines.
  • the invention further relates to a method for producing the fuel rail.
  • Fuel rail for the direct injection of gasoline are basically known in practice. They comprise a tube-like element with a fuel channel, from which fuel channel usually branch off three, four or even more outlet openings. The outlet openings are fluidly connected to a respective injection nozzle.
  • the fuel rail also includes an inlet passage for supplying fuel to the fuel rail.
  • the fuel rail is a forging.
  • this requires in the manufacturing process at least one bore per connection piece for generating the connection channel. Due to the required minimum length The connecting pieces are thus deep drilling required, which are expensive. These deep holes are particularly expensive due to the high tolerance requirements in terms of position and diameter, which makes the manufacturing process correspondingly more expensive.
  • the invention is therefore the technical problem of providing a fuel rail, in which the above-mentioned disadvantage is avoided.
  • the invention addresses the technical problem of specifying a fuel rail, in which the manufacturing cost is reduced.
  • the invention teaches a fuel rail for fuel injection for internal combustion engines in motor vehicles, in particular for gasoline engines, comprising a base tube, wherein the base tube has a extending in the longitudinal direction of the base tube fuel passage, wherein the base tube comprises at least two outlet openings, wherein the outlet openings branch off from the fuel channel, wherein a connection element is arranged on the base tube, wherein the connection element has a voltage applied to the base tube abutment wall, wherein the connection element is integrally connected to the base tube, wherein the connection element has at least two connecting pieces, wherein the connecting pieces each have a connection channel to fluidic connection each have an outlet opening, each with an injection nozzle.
  • the invention is based on the finding that a decoupling of the fuel channel and the connecting piece at the beginning of the manufacturing process is very advantageous.
  • the decoupling is accomplished by the fact that the fuel channel is formed by the base tube and the connecting pieces are attached to the base tube only in a later manufacturing step.
  • the Connecting pieces are arranged on the connecting element, which connecting element is firmly bonded and preferably by means of soldering to the base tube.
  • This decoupling has the advantage that initially only the outlet openings are produced by means of bores on the base tube. These holes only need to penetrate the wall thickness of the base pipe, so that a deep drilling process is not required here. As a result, even very high tolerance requirements in terms of position and diameter of the outlet openings are much less expensive.
  • the connection channels can z. B. be made by deep drilling, but then expediently the connection channels have a correspondingly large diameter, so that in this respect only small tolerance requirements must be met. The production cost is thus significantly reduced.
  • connection element comprises steel and advantageously an austenitic steel.
  • the steel of the connection element preferably has an austenitic structural component and is advantageously a duplex steel.
  • connection element and / or the base tube comprises a steel corrosion-resistant against fuel.
  • the base tube may be seamless or double or multi-walled.
  • connection element is firmly bonded and preferably fixed to the base tube by means of soldering, particularly preferably by means of brazing and very particularly preferably by means of high-temperature brazing. It is possible that the connection element is attached by welding to the base tube.
  • connection element comprises a forging part and advantageously a drop forging part. Conveniently, has the connection element on a ridge or burrs or deburred places. It is preferred that the connection element is formed at least predominantly and preferably completely integrally.
  • integral means in particular the production of a forged part or a cast.
  • the connecting pieces are integrally connected to the plant wall.
  • the connection element comprises one and preferably only one casting. The casting preferably comprises cast iron.
  • connection element encloses the base tube at least in sections and preferably along the entire length of the base tube only partially, preferably at most around 350 °, preferably at most around 270 ° and particularly preferably at most around 190 °.
  • the base tube and the connecting element are formed such that the base tube can be inserted into the connecting element due to the partial enclosing of the connecting element.
  • the connecting element has two edges, which run parallel to the longitudinal axis of the base tube and form one end of the connecting element in the circumferential direction and which edges preferably form part of the abutment wall. It is preferred that the two edges extend at least along 50%, 75% and 100% of the length spanned by the outlet openings.
  • a respective weld seam is arranged along the two edges.
  • the connecting element in each case has an arcuate edge at its own ends facing the base tube ends, along which arcuate edges expediently a respective weld seam is arranged.
  • a longitudinal axis of at least one connecting piece or a connecting channel intersects the longitudinal axis of the fuel channel.
  • a longitudinal axis of at least one connection channel or connection piece lies in a plane with the longitudinal axis of the fuel channel. This condition is considered fulfilled if the longitudinal axis of the connection channel or connecting piece does not pass by more than +/- 10% from the inner diameter of the base tube on the longitudinal axis of the fuel channel. It is particularly preferred if the longitudinal axis of the fuel channel and the longitudinal axis of at least one connecting piece or connecting channel lie in one plane and enclose a substantially rectangular angle relative to one another.
  • At least one of the connecting pieces has an inner wall, which inner wall forms the connecting channel, wherein the inner wall is formed integrally with the at least one connecting piece and wherein the inner wall is the innermost wall. It is preferred that the inner wall can be brought into contact with the fuel.
  • the connection piece is integrally formed.
  • the connecting piece is designed so that it has no inner sleeve.
  • At least one connecting piece is assigned at least one connecting piece, which connecting piece extends at least in sections parallel to the at least one connecting piece.
  • the connecting piece runs along its predominant length parallel to the connecting piece.
  • the at least one connecting piece is part of the connecting element and preferably a portion of the forging or casting.
  • the connection piece is formed integrally with the connection element. It is appropriate that the connecting piece and the connecting piece share at least one common wall.
  • the end facing away from the base tube of the at least one connecting piece is aligned with an end of the connecting piece facing away from the base tube. It is expedient that a longitudinal axis of the connecting piece does not intersect the base tube. It is preferred that an end of the connecting piece facing the base tube is aligned with an edge of the connecting element running parallel to the longitudinal axis of the fuel channel.
  • the connecting piece conveniently has a passage opening along its longitudinal axis.
  • the base tube has a wall thickness of at least 1.0 mm, preferably of at least 1.5 mm and particularly preferably of at least 2 mm.
  • a wall thickness of the base tube is at most 15 mm, preferably at most 10 mm and particularly preferably at most 7 mm.
  • the inner diameter of the base tube is advantageously at least 8 mm, preferably at least 12 mm and particularly preferably at least 15 mm.
  • the base tube preferably has an inner diameter of at most 60 mm, preferably at most 50 mm, and particularly preferably at most 40 mm.
  • the abutment wall comprises at least one window-like opening.
  • the connecting element between the at least two connecting pieces on an intermediate region preferably comprises only a part of the abutment wall.
  • the intermediate region is particularly preferably designed like a partial shell and expediently connects the two connecting pieces.
  • the intermediate region comprises at least two window-like openings, wherein the window-like openings are expediently separated from one another by a web.
  • At least one of the diameters of the connection channels is at least a factor of 1.2, preferably 1.5 and particularly preferably 2.0 greater than the diameter of the associated outlet opening.
  • a diameter of at least one or all outlet openings is expediently at least 1.0 mm, preferably at least 1.5 mm and particularly preferably at least 2.0 mm.
  • At least one or all outlet openings expediently have a diameter of at most 20 mm, preferably of at most 15 mm and particularly preferably of at most 10 mm.
  • a diameter of the connecting channels is expediently at least 4 mm, preferably at least 6 mm and particularly preferably at least 8 mm.
  • the connection channels expediently have a diameter of at most 50 mm, preferably of at most 35 mm and particularly preferably of at most 25 mm.
  • connecting pieces or connecting channels only each have a longitudinal axis. It is preferred that none of the connection channels is bent or angled. If the connecting pieces or connecting channels only each have a longitudinal axis, so hereby any connecting pieces or connection channels are excluded, which are designed bent or angled.
  • the fuel rail is designed so that it can be subjected to pressures of at most 1500 bar, preferably up to at most 1000 bar and more preferably up to at most 700 bar.
  • the fuel rail is designed so that it is only suitable for gasoline engines. It is preferred that the fuel rail can withstand the usual pressures in gasoline engines easily, but not the usual pressures in diesel engines.
  • the invention further provides a method for producing a fuel rail, in particular a fuel rail according to the invention, wherein a base tube is provided with a extending in the longitudinal direction of the base tube fuel passage, wherein at least two outlet openings are drilled in the base tube, so that the outlet openings branch off from the fuel channel wherein a connection element is arranged on the base tube, so that a contact wall of the connection element rests against the base tube, wherein the connection element is integrally connected to the base tube, wherein the connection element has at least two connection pieces, wherein the connection pieces each have a connection channel for the fluidic connection of one Have outlet opening, each with an injection nozzle.
  • connection element is produced by forging and more preferably by drop forging.
  • connection element is produced by casting.
  • connection element is connected by means of soldering material fit with the base tube.
  • connection element is connected to the base tube by means of brazing and particularly preferably by means of high-temperature brazing.
  • connection element can also be fastened to the base tube by means of welding.
  • Fig. 1 is a base tube 1 of a fuel rail according to the invention shown.
  • the base tube 1 has a fuel channel 2 extending in the longitudinal direction of the base tube 1. From this fuel channel 2 branch off a total of four outlet openings 3 with a diameter of for example 4 mm. Due to the perspective view can not be seen that on the back of the base tube 1 is still an inlet opening.
  • the base tube 1 consists of an austenitic steel, has a wall thickness of z. B. 3 mm and an exemplary inner diameter of 20 mm.
  • connection element 4 can be seen, which on the base tube 1 from Fig. 1 is put on.
  • each outlet opening 3 of the base tube 1 is assigned a connection piece 6.
  • the connecting pieces 6 connect the outlet openings 3 and thus the fuel channel 2 fluidly with the respective injection nozzles, not shown, via connecting channels 7.
  • the connecting piece 6 is in each case assigned a connecting piece 8, wherein the longitudinal axes of the connecting piece 8 extend parallel to the longitudinal axes of the connecting piece 6.
  • Each connecting piece 8 touches its associated connection piece 6, so that they are a common wall divide.
  • An inner diameter of the connecting piece 6 and a diameter of the connecting channels 7 is for example 12 mm.
  • connection element 4 is designed so that it can rest against the base tube 1, for which purpose it has a contact wall 5.
  • the abutment wall 5 has, between the four connecting pieces 6, an intermediate region 12 which is made relatively thin.
  • the strength of the investment wall 5 in the intermediate regions 12 is z. B. 3 mm.
  • each of the three intermediate regions 12 has two windows 9, which are separated from each other by a web 13.
  • the connection element 4 ideally consists entirely of an austenitic steel.
  • the connecting piece 6 and the connecting piece 8 are integrally connected to the plant wall 5.
  • the terminal of this embodiment was made by swaging.
  • the connection channels 7 are produced by drilling or deep drilling.
  • the base tube 1 and the connection element 4 are assembled by means of soldering. Such a fuel rail is made in Fig. 3 displayed.
  • the base tube 1 has been closed at the ends by means of plugs 10. Further, an inlet nozzle 11 has been soldered to the base tube 1, so that a fluidic connection of the inlet opening with a fuel line, not shown, is possible.

Landscapes

  • 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)
EP16153634.7A 2016-02-01 2016-02-01 Rampe de distribution de carburant et son procede de fabrication Not-in-force EP3199794B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP16153634.7A EP3199794B1 (fr) 2016-02-01 2016-02-01 Rampe de distribution de carburant et son procede de fabrication
CN201710055371.3A CN107023428B (zh) 2016-02-01 2017-01-25 燃料分配条以及其制造方法
JP2017015296A JP6845701B2 (ja) 2016-02-01 2017-01-31 燃料分配レース及びその製造のための方法
US15/420,432 US10260469B2 (en) 2016-02-01 2017-01-31 Fuel distributor rail and method for manufacturing same
KR1020170014431A KR20170091531A (ko) 2016-02-01 2017-02-01 연료 분배기 레일 및 그 제조 방법

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16153634.7A EP3199794B1 (fr) 2016-02-01 2016-02-01 Rampe de distribution de carburant et son procede de fabrication

Publications (2)

Publication Number Publication Date
EP3199794A1 true EP3199794A1 (fr) 2017-08-02
EP3199794B1 EP3199794B1 (fr) 2018-06-27

Family

ID=55272406

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16153634.7A Not-in-force EP3199794B1 (fr) 2016-02-01 2016-02-01 Rampe de distribution de carburant et son procede de fabrication

Country Status (5)

Country Link
US (1) US10260469B2 (fr)
EP (1) EP3199794B1 (fr)
JP (1) JP6845701B2 (fr)
KR (1) KR20170091531A (fr)
CN (1) CN107023428B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015226795A1 (de) * 2015-12-29 2017-06-29 Robert Bosch Gmbh Komponente einer hydraulischen Einrichtung, insbesondere einer Brennstoffeinspritzanlage für Brennkraftmaschinen
DE102019220377A1 (de) * 2019-12-20 2021-06-24 Robert Bosch Gmbh Fluidverteiler für eine Einspritzanlage, insbesondere Brennstoffverteilerleiste für eine Brennstoffeinspritzanlage für gemischverdichtende, fremdgezündete Brennkraftmaschinen

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DE102006010244B3 (de) * 2006-03-02 2007-09-06 Benteler Automobiltechnik Gmbh Kraftstoffverteiler
DE102009004773A1 (de) * 2009-01-15 2010-07-22 Daimler Ag Verfahren zum Herstellen einer Rail-Baugruppe
JP5622826B2 (ja) * 2012-11-08 2014-11-12 本田技研工業株式会社 燃料配管の取付構造

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JPH0754612Y2 (ja) * 1989-06-06 1995-12-18 臼井国際産業株式会社 フユーエルデリバリパイプ
JP3384885B2 (ja) * 1994-09-22 2003-03-10 マルヤス工業株式会社 フューエルデリバリ装置
JP3310144B2 (ja) * 1995-09-13 2002-07-29 株式会社ユニシアジェックス 燃料配管装置
JP4794871B2 (ja) * 2005-01-24 2011-10-19 臼井国際産業株式会社 フューエルデリバリパイプ
US7159569B2 (en) * 2005-05-11 2007-01-09 Delphi Technologies, Inc. Fabricated fuel rail assembly for direct injection of fuel
US7699041B2 (en) * 2007-12-11 2010-04-20 Delphi Technologies, Inc. Fuel distribution tube for direct injection fuel rail assemblies
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JP2009293419A (ja) * 2008-06-03 2009-12-17 Honda Motor Co Ltd コモンレールの取付構造
JP5510992B2 (ja) * 2008-06-30 2014-06-04 臼井国際産業株式会社 高圧直噴内燃機関用燃料レール及びその製造方法
KR101027791B1 (ko) * 2009-08-11 2011-04-07 주식회사 케피코 직분식 연료레일의 마운트 구조체
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Publication number Priority date Publication date Assignee Title
DE10322769A1 (de) * 2003-05-19 2005-03-03 Winkelmann Palsis Motortechnik Gmbh & Co.Kg Vorrichtung zum Zuführen von Kraftstoff zu Einspritzventilen
DE102006010244B3 (de) * 2006-03-02 2007-09-06 Benteler Automobiltechnik Gmbh Kraftstoffverteiler
DE102009004773A1 (de) * 2009-01-15 2010-07-22 Daimler Ag Verfahren zum Herstellen einer Rail-Baugruppe
JP5622826B2 (ja) * 2012-11-08 2014-11-12 本田技研工業株式会社 燃料配管の取付構造

Also Published As

Publication number Publication date
US20170218903A1 (en) 2017-08-03
EP3199794B1 (fr) 2018-06-27
US10260469B2 (en) 2019-04-16
JP2017137864A (ja) 2017-08-10
JP6845701B2 (ja) 2021-03-24
CN107023428B (zh) 2020-11-03
KR20170091531A (ko) 2017-08-09
CN107023428A (zh) 2017-08-08

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