JP2004138061A - Component to be loaded under internal pressure, and method for manufacturing the component loaded under internal pressure having non-cylindrical cross section - Google Patents

Component to be loaded under internal pressure, and method for manufacturing the component loaded under internal pressure having non-cylindrical cross section Download PDF

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Publication number
JP2004138061A
JP2004138061A JP2003353851A JP2003353851A JP2004138061A JP 2004138061 A JP2004138061 A JP 2004138061A JP 2003353851 A JP2003353851 A JP 2003353851A JP 2003353851 A JP2003353851 A JP 2003353851A JP 2004138061 A JP2004138061 A JP 2004138061A
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Prior art keywords
component
internal pressure
section
loaded
loaded under
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JP2003353851A
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Japanese (ja)
Inventor
Manfred Wilhelm
マンフレート　ヴィルヘルム
Wilhelm Hopf
ヴィルヘルム　ホプフ
Dieter Holz
ディーター　ホルツ
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Robert Bosch GmbH
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Robert Bosch GmbH
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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/155—Making tubes with non circular section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K21/00—Making hollow articles not covered by a single preceding sub-group
    • B21K21/16—Remodelling hollow bodies with respect to the shape of the cross-section
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8053—Fuel injection apparatus manufacture, repair or assembly involving mechanical deformation of the apparatus or parts thereof

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

Abstract

<P>PROBLEM TO BE SOLVED: To enhance the strength, in particular, the strength of an intersectional area of a hole in a component loaded under the internal pressure. <P>SOLUTION: In a component to be loaded by the internal pressure, in particular, the component for the fuel injection system which comprises a long tubular body having one hole in the longitudinal direction and at least one hole in the transverse direction and a connection portion for supply/discharge, the hole 6 in the longitudinal direction of the component 1 to be loaded under the internal pressure and an outer contour 2 thereof have a non-cylindrical section. <P>COPYRIGHT: (C)2004,JPO

Description

　本発明は、内圧によって負荷される構成部材、特に燃料噴射系用の構成部材であって、１つの長手方向孔と少なくとも１つの横方向孔とを備えた長く延びた管状の本体と、供給・排出のための接続部分とから成っている形式のものに関する。 The invention relates to a component which is loaded by an internal pressure, in particular a component for a fuel injection system, which comprises an elongated tubular body with one longitudinal hole and at least one transverse hole; And a connection part for discharge.

　特に、内燃機関における燃料の噴射技術の分野において使用される、いわゆる蓄圧式噴射装置（コモンレール）では、特に内圧によって負荷される構成部材が必要である。そしてこのような部材は高圧アキュムレータ（レール）及びインジェクタのために使用される。 Particularly, in the case of a so-called accumulator type injection device (common rail) used in the field of fuel injection technology in an internal combustion engine, components which are loaded by internal pressure are particularly necessary. Such components are then used for high-pressure accumulators (rails) and injectors.

　このような部材は、特に燃料噴射系のために適しており、極めて高い内圧を受けるのみならず、周期的に内圧の強い変動にもさらされる。従ってこのような構成部材は相応に強度に対する高い要求をも満たす必要がある。特にまず第１に、長手方向孔と横方向孔との交差部における強度が問題になる。 部 材 Such components are particularly suitable for fuel injection systems and are not only subjected to very high internal pressures, but are also periodically exposed to strong fluctuations in the internal pressures. Accordingly, such components must also meet correspondingly high requirements for strength. First and foremost, the strength at the intersection of the longitudinal and lateral holes is of particular concern.

　ゆえに本発明の課題は、強度、特に孔の交差領域における強度をさらに高めることである。 The object of the present invention is therefore to further increase the strength, in particular in the region of the intersection of the holes.

　この課題を解決するために本発明の構成では、内圧によって負荷される構成部材、特に燃料噴射系用の構成部材であって、１つの長手方向孔と少なくとも１つの横方向孔とを備えた長く延びた管状の本体と、供給・排出のための接続部分とから成っている形式のものにおいて、内圧によって負荷される構成部材の長手方向孔と外側輪郭とが、非円筒形の横断面を有しているようにした。 In order to solve this problem, according to the invention, there is provided a component which is loaded by internal pressure, in particular a component for a fuel injection system, which comprises a long hole with one longitudinal hole and at least one transverse hole. In the form of an elongated tubular body and a connection for supply and discharge, the longitudinal bore and the outer contour of the component loaded by internal pressure have a non-cylindrical cross section. I did it.

　また前記課題を解決するために、本発明の方法では、１つの長手方向孔と少なくとも１つの横方向孔とを備えた長く延びた管状の本体と、供給・排出のための接続部分とから成っている、内圧によって負荷される構成部材、特に燃料噴射系用の構成部材を製造する方法において、面に向かって構成部材の外側輪郭に圧力を加え、この際にまず初めは横断面円筒形の長手方向孔から、非円筒形の横断面を生ぜしめるようにした。 According to another aspect of the present invention, there is provided a method comprising an elongated tubular body having one longitudinal hole and at least one transverse hole, and a connection part for supply and discharge. In a method for producing a component which is loaded by internal pressure, in particular a component for a fuel injection system, pressure is applied to the outer contour of the component in the direction of the face, the first being a cylindrical cross section. From the longitudinal bore, a non-cylindrical cross section was created.

　すなわち前記課題を解決するために本発明の構成では、従来技術に基づいて公知の円筒形の横断面の代わりに、長手方向孔のために非円筒形の横断面を使用するようにし、本発明の方法では、このような横断面を形成するために、塑性変形による製法を用いている。 That is, in order to solve the above-mentioned problem, in the configuration of the present invention, a non-cylindrical cross section is used for a longitudinal hole instead of a known cylindrical cross section based on the prior art. In the method (1), a manufacturing method by plastic deformation is used to form such a cross section.

　本発明によって得られる大きな利点としては次のことが挙げられる。すなわち本発明による構成部材もしくはその製法では、特に鍛造によって形成された内圧によって負荷される構成部材であって、横方向孔を備えた接続部が長く延びた本体に鍛接されている構成部材において、深い穿孔により製造された長手方向孔の円筒形の横断面から非円筒形の横断面が生ぜしめられるような変形を行うことができる。 大 き な The following are the major advantages obtained by the present invention. That is, in the component according to the present invention or the method for producing the same, particularly in the component which is loaded by the internal pressure formed by forging, and the connecting portion having the lateral hole is forged in contact with the elongated body, Deformations can be made such that a non-cylindrical cross section results from a cylindrical cross section of a longitudinal bore produced by deep drilling.

　特に適当な支持部（平面又はＶ字形の支持部）によって、例えば楕円形の横断面を生ぜしめることができ、この場合交差領域においても同様に非円筒形の横断面が生ぜしめられ、そして、特にこの領域において高い圧力に基づいて生じる負荷応力は最小になる。このような内圧によって負荷される構成部材を簡単に製造するためには、該構成部材を部分的に又は全体的に加熱すると、据込み工程を簡単に行うことができる。 Particularly suitable supports (planar or V-shaped supports) can produce, for example, an elliptical cross-section, in which case also a non-cylindrical cross-section is produced at the intersection area, and Especially in this region, the applied stresses caused by high pressures are minimized. In order to easily manufacture a component that is loaded by such an internal pressure, if the component is partially or wholly heated, the upsetting process can be performed easily.

　次に図面を参照しながら本発明の実施の形態を説明する。 Next, an embodiment of the present invention will be described with reference to the drawings.

　図１には、コモンレールの形をした内圧によって負荷される構成部材１が示されている。この構成部材１は外側輪郭２と、この外側輪郭２に接続する接続部分３とを有している。この接続部分３は付加的に横方向孔４を有しており、この横方向孔４は交差領域５において、内圧によって負荷される構成部材の内部に配置された長手方向孔と連通している。 FIG. 1 shows a component 1 which is loaded by internal pressure in the form of a common rail. The component 1 has an outer contour 2 and a connecting part 3 connected to the outer contour 2. The connecting part 3 additionally has a transverse bore 4 which in the crossover region 5 communicates with a longitudinal bore located inside the component which is loaded by internal pressure. .

　長手方向孔６はその本来の状態（図示せず）において、真円形の円筒形の横断面を有している。 The longitudinal hole 6 has a true circular cylindrical cross section in its original state (not shown).

　図示の楕円形の横断面を製造するために、内圧によって負荷される構成部材は有利には、全体的に完全に加熱され、平らな面７に支持され、そしてこの平らな面７に向かって押圧力である力Ｆが加えられる。力Ｆによるこの据込み（Anstauchen）によって、内圧によって負荷される構成部材の外側輪郭は、方向Ｒ１，Ｒ２に膨張し、長手方向孔６の相応に円筒形の横断面もまた、力Ｆの大きさに関連して楕円形に形成される。 In order to produce the illustrated oval cross section, the components which are loaded by internal pressure are advantageously completely heated, supported on a flat surface 7 and towards this flat surface 7. A force F, which is a pressing force, is applied. Due to this upsetting by the force F, the outer contour of the component loaded by the internal pressure expands in the directions R1, R2, and the corresponding cylindrical cross section of the longitudinal bore 6 also has a magnitude of the force F. It is formed in an elliptical shape in connection with the shape.

　図２に示されている実施例では、平らな面７の代わりに、Ｖ字形に形成された対応面７′が使用される。この対応面７′によって、図２に示されているような長手方向孔６の楕円形の横断面が生ぜしめられ、外側輪郭２もまた同様に、面７′のＶ字形の構成に対応して相応に形成される。 In the embodiment shown in FIG. 2, instead of the flat surface 7, a corresponding surface 7 'formed in a V-shape is used. The corresponding surface 7 'produces an elliptical cross section of the longitudinal bore 6 as shown in FIG. 2, and the outer contour 2 likewise corresponds to the V-shaped configuration of the surface 7'. Formed accordingly.

　図３にはＡ〜Ｇに、塑性変形の種々異なった可能性が示されている。 FIG. 3 shows different possibilities of plastic deformation in AG.

　特に鍛造された構成部材における、単純なもしくは簡単な据込み行程（塑性変形）によって、特に交差領域において、長手方向孔の最適な横断面を得ることができる。 A simple or simple upsetting process (plastic deformation), in particular in the forged component, makes it possible to obtain an optimum cross section of the longitudinal bore, especially in the intersection region.

横断面が非円筒形の長手方向孔を製造するための方法ステップの第１実施例を示す図である。FIG. 3 shows a first embodiment of a method step for producing a longitudinal bore having a non-cylindrical cross section. 非円筒形の横断面をもつ構成部材を製造するための方法ステップの別の実施例を示す図である。FIG. 4 illustrates another embodiment of a method step for manufacturing a component having a non-cylindrical cross section. コモンレールの種々異なった据込み工程の可能性を概略的に示す図である。FIG. 3 schematically shows the possibility of different upsetting processes of the common rail.

符号の説明Explanation of reference numerals

　１　構成部材、　２　外側輪郭、　３　接続部分、　４　横方向孔、　５　交差領域、　６　長手方向孔、　７　面、　７′　対応面 {1} component, {2} outer contour, {3} connecting part, {4} lateral hole, {5} intersection area, {6} longitudinal hole, {7} plane, {7 ′} corresponding plane

Claims (6)

　内圧によって負荷される構成部材、特に燃料噴射系用の構成部材であって、１つの長手方向孔と少なくとも１つの横方向孔とを備えた長く延びた管状の本体と、供給・排出のための接続部分とから成っている形式のものにおいて、内圧によって負荷される構成部材（１）の長手方向孔（６）と外側輪郭（２）とが、非円筒形の横断面を有していることを特徴とする、内圧によって負荷される構成部材。 A component which is loaded by internal pressure, in particular a component for a fuel injection system, which comprises an elongated tubular body with one longitudinal bore and at least one transverse bore, The longitudinal bore (6) and the outer profile (2) of the component (1) loaded by internal pressure have a non-cylindrical cross section. A component that is loaded by internal pressure. 　交差領域（５）において長手方向孔（６）が平らに面取りされている、請求項１記載の構成部材。 Component according to claim 1, wherein the longitudinal holes (6) are chamfered flat at the intersection area (5). 　１つの長手方向孔と少なくとも１つの横方向孔とを備えた長く延びた管状の本体と、供給・排出のための接続部分とから成っている、内圧によって負荷される構成部材、特に燃料噴射系用の構成部材を製造する方法であって、下記の方法ステップ、すなわち面（７，７′）に向かって構成部材（１）の外側輪郭（２）に圧力を加え、この際にまず初めは横断面円筒形の長手方向孔（６）から、非円筒形の横断面を生ぜしめるという方法ステップを特徴とする、内圧によって負荷される構成部材を製造する方法。 Internal pressure-loaded component, in particular a fuel injection system, consisting of an elongated tubular body with one longitudinal bore and at least one transverse bore and a connection for supply and discharge A method for producing a component for use in a method, comprising applying pressure to the outer contour (2) of the component (1) in the direction of the plane (7, 7 '), A method for producing a component loaded by internal pressure, characterized by the method step of producing a non-cylindrical cross-section from a longitudinal bore (6) of cross-section cylindrical. 　圧力負荷を接続部分（３）に対して行う、請求項３記載の方法。 4. The method according to claim 3, wherein the pressure load is applied to the connection part (3). 　圧力負荷を、横断面が平らな面（７）に向かって行う、請求項３又は４記載の方法。 5. The method according to claim 3, wherein the pressure is applied to a plane with a flat cross section. 　圧力負荷を、横断面がＶ字形の面（７′）に向かって行う、請求項３又は４記載の方法。 5. The method according to claim 3, wherein the pressure is applied to a surface (7 ') having a V-shaped cross section.
JP2003353851A 2002-10-19 2003-10-14 Component to be loaded under internal pressure, and method for manufacturing the component loaded under internal pressure having non-cylindrical cross section Pending JP2004138061A (en)

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DE2002148800 DE10248800A1 (en) 2002-10-19 2002-10-19 Internal pressure-loaded component and method for producing an internal pressure-loaded component with a non-cylindrical cross section

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Cited By (2)

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Publication number Priority date Publication date Assignee Title
JP2011252493A (en) * 2010-06-03 2011-12-15 Delphi Technologies Holding Sarl Stress relief in pressurized fluid flow system
EP3470662A1 (en) * 2017-10-12 2019-04-17 Continental Automotive GmbH Fuel rail assembly, method of manufacturing a fuel adapter and fixing bracket for a fuel rail assembly

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DE102012106585A1 (en) * 2012-07-20 2014-01-23 Benteler Automobiltechnik Gmbh Method for producing a high-pressure fuel line

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JP3841370B2 (en) * 1996-12-07 2006-11-01 臼井国際産業株式会社 Common rail
JP3916176B2 (en) * 1997-01-14 2007-05-16 臼井国際産業株式会社 Common rail
JPH10318084A (en) * 1997-03-03 1998-12-02 Usui Internatl Ind Co Ltd Slider incorporated type member having branch hole for high pressure fluid
DE19913793A1 (en) * 1999-03-26 2000-10-19 Daimler Chrysler Ag Procedure for manufacture of HP pipe distributing fuel to injectors of internal combustion engine entails attachment of nipples by friction welding to main pipe, with main pipe and nipples made of high strength non-rusting material
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DE19948339C1 (en) * 1999-10-07 2000-12-14 Bosch Gmbh Robert High pressure fuel reservoir for common-rail fuel injection system for i.c. engine provided by hollow tubular body with its interiror space provided by coupled or overlapping cylindrical recesses
JP2001295723A (en) * 2000-04-13 2001-10-26 Denso Corp Pressure accumulation type fuel injection device
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DE10123234A1 (en) * 2001-05-12 2002-11-28 Bosch Gmbh Robert High pressure fuel accumulator for a common rail fuel injection system of an internal combustion engine comprises an accumulator chamber and a base body having a cylindrical, elliptical or polygonal cross-section
DE10140058A1 (en) * 2001-08-16 2002-10-24 Bosch Gmbh Robert High pressure fuel storage-container has basic body with lengthwise and transverse hollow cavities, connecting support, and inner storage chamber

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011252493A (en) * 2010-06-03 2011-12-15 Delphi Technologies Holding Sarl Stress relief in pressurized fluid flow system
US8726942B2 (en) 2010-06-03 2014-05-20 Delphi International Operations Luxembourg, S.A.R.L. Stress relief in pressurized fluid flow system
EP3470662A1 (en) * 2017-10-12 2019-04-17 Continental Automotive GmbH Fuel rail assembly, method of manufacturing a fuel adapter and fixing bracket for a fuel rail assembly

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EP1411237A1 (en) 2004-04-21

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