JP6008432B2 - Fuel distributor made of duplex steel and method for manufacturing the fuel distributor - Google Patents
Fuel distributor made of duplex steel and method for manufacturing the fuel distributor Download PDFInfo
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- JP6008432B2 JP6008432B2 JP2014057578A JP2014057578A JP6008432B2 JP 6008432 B2 JP6008432 B2 JP 6008432B2 JP 2014057578 A JP2014057578 A JP 2014057578A JP 2014057578 A JP2014057578 A JP 2014057578A JP 6008432 B2 JP6008432 B2 JP 6008432B2
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- fuel distributor
- fuel
- conduit
- bar
- steel
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- 239000000446 fuel Substances 0.000 title claims description 85
- 229910000831 Steel Inorganic materials 0.000 title claims description 12
- 239000010959 steel Substances 0.000 title claims description 12
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 238000000034 method Methods 0.000 title claims description 7
- 229910001039 duplex stainless steel Inorganic materials 0.000 claims description 11
- 238000002485 combustion reaction Methods 0.000 claims description 10
- 238000005219 brazing Methods 0.000 claims description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 238000001816 cooling Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 101150038956 cup-4 gene Proteins 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910001566 austenite Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000002816 fuel additive Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
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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
- 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
- F02M2200/9053—Metals
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Description
本発明は、請求項１の上位概念に記載の特徴による燃料分配器に関する。 The invention relates to a fuel distributor according to the features of the superordinate concept of claim 1.
燃料を内燃機関に対して噴射することが、従来の技術から公知である。したがって、吸気管内への噴射工程若しくは予燃焼室内への噴射工程が実施され得る、又は、代わりに燃焼室内への直接の噴射工程が実施されてもよい。このため、燃料分配器が、内燃機関に取り付けられている。この場合、当該燃料分配器は、燃料供給ポンプに結合されている。この燃料供給ポンプは、高圧燃料噴射管の場合は燃料分配器用導管内に３００バール〜４００バール、特に３５０バールの圧力、動作圧力又は定格圧力（Ｐｎｅｎｎ）を発生させる。設計上は、Ｐｎｅｎｎ＊１．５＝有効圧である。 It is known from the prior art to inject fuel into an internal combustion engine. Therefore, an injection step into the intake pipe or an injection step into the pre-combustion chamber may be performed, or a direct injection step into the combustion chamber may be performed instead. For this reason, a fuel distributor is attached to the internal combustion engine. In this case, the fuel distributor is coupled to a fuel supply pump. The fuel supply pump generates a pressure, operating pressure or rated pressure (Pnenn) of 300 bar to 400 bar, in particular 350 bar, in the fuel distributor conduit in the case of a high pressure fuel injection pipe. By design, Pnenn * 1.5 = effective pressure.
内燃機関の周囲環境内と燃料の供給装置内とで十分な耐腐食性を持たせるため、オーステナイト系の材料が使用されることが、従来の技術から公知である。 It is known from the prior art that austenitic materials are used in order to provide sufficient corrosion resistance in the ambient environment of the internal combustion engine and in the fuel supply device.
変わらない又は低減されたエンジン排気量で動力性能を向上させることを意味する内燃機関のダウンサイジングにあっては、燃料供給圧力が高い。しかしながら、要求される構造空間つまり燃料分配器の外装自体は変わらない。 In downsizing of an internal combustion engine, which means improving power performance with unchanged or reduced engine displacement, the fuel supply pressure is high. However, the required structural space, that is, the exterior of the fuel distributor itself does not change.
十分な稼働信頼性を保証するためには、及び、燃料の添加剤、例えばエタノール及びメタノールに対する向上した耐腐食性を保証するためには、使用される材料においてその壁厚を増大させる必要がある。しかしながら、当該壁厚の増大は、同時に、燃料分配器の製造を困難にする。何故なら、例えば、燃料分配器用導管又はホルダが、成形加工によって製造されるからである。この場合、当該成形自体が明らかに困難になる。予燃焼室の容積が、当該壁厚の増大によって減少され得ない。当該壁厚の増大は、専ら外側に向けて（構造空間方向に）可能である。 In order to ensure sufficient operational reliability and to ensure improved corrosion resistance to fuel additives such as ethanol and methanol, it is necessary to increase its wall thickness in the materials used . However, this increase in wall thickness at the same time makes the manufacture of the fuel distributor difficult. This is because, for example, fuel distributor conduits or holders are manufactured by molding. In this case, the molding itself is clearly difficult. The volume of the precombustion chamber cannot be reduced by increasing the wall thickness. The wall thickness can be increased exclusively outward (in the direction of the structural space).
本発明の課題は、安全率の考慮の下で予測される稼働状況に対する実際の要求を満たし、同時に安価に製造可能である、燃料分配器を提供することにある。 It is an object of the present invention to provide a fuel distributor that satisfies the actual requirements for the operating situation predicted under the consideration of the safety factor and at the same time can be manufactured at low cost.
本発明によれば、上記課題は、請求項１に記載の特徴による燃料分配器によって解決される。 According to the invention, the above problem is solved by a fuel distributor according to the features of claim 1.
本発明の好適な実施の形態は、従属請求項に記載されている。 Preferred embodiments of the invention are described in the dependent claims.
自動車の内燃機関用の本発明の燃料分配器は、１つの燃料分配器用導管を有する１つの燃料分配器用フューエルレールと、この燃料分配器用導管から分岐している複数のインジェクタカップとを備え、且つ本発明によれば、前記燃料分配器用導管と、任意の前記ホルダとが、二相鋼から形成されていることを特徴とする。 The fuel distributor of the present invention for an automobile internal combustion engine comprises a fuel distributor fuel rail having a fuel distributor conduit, and a plurality of injector cups branched from the fuel distributor conduit, and According to the present invention, the fuel distributor conduit and the optional holder are made of duplex steel.
したがって、本発明によれば、同じ又は削減された構造寸法のときでも、十分により高い強度を実現することが可能である。さらに、二相鋼のオーステナイト系の成分自体が、発生する腐食に対する十分な耐性を保証する。従来の技術から公知の燃料分配器用フューエルレールに比べて少なくとも変わらない又は削減された壁厚を実現することが可能である。しかしながら、当該壁厚は、同時に、増大した稼働圧力に耐え、したがって長時間にわたって使用できるように形成されている。 Therefore, according to the present invention, it is possible to achieve sufficiently higher strength even with the same or reduced structural dimensions. Furthermore, the austenitic components themselves of the duplex stainless steel ensure sufficient resistance to the corrosion that occurs. It is possible to realize wall thicknesses that are at least unchanged or reduced compared to fuel distributor fuel rails known from the prior art. However, the wall thickness is at the same time designed to withstand increased operating pressures and therefore to be used for extended periods of time.
したがって、本発明の範囲内では、燃料分配器用フューエルレールの少なくとも燃料分配器用導管、すなわち燃料分配器用主管を二相鋼から形成することが可能である。しかしながら、本発明の範囲内では、さらなる取付部品、例えば、燃料分配器用導管から分岐されたインジェクタカップ又はシールプラグ、固定ホルダ若しくは接続流路も、二相鋼から形成され得る。当該個々の構成備品は、特に高温ロウ付け法によって５００℃〜１１５０℃の温度範囲で互いに結合される。特に、以下の材料が本発明にしたがって使用される：１．４４６２，１．４１６２，１．４３６２又は１．４６６２（欧州規格（ＥＮ））。従来の技術に比べてより高い強度が、当該硬ロウ付け法にしたがっても得られる。 Therefore, within the scope of the present invention, it is possible to form at least the fuel distributor conduit of the fuel distributor fuel rail, i.e., the fuel distributor main pipe, from duplex stainless steel. However, within the scope of the invention, further fittings, for example injector cups or seal plugs branched off from the fuel distributor conduit, fixed holders or connecting channels can also be formed from duplex steel. The individual component fixtures are bonded together in the temperature range of 500 ° C. to 1150 ° C., in particular by a high temperature brazing method. In particular, the following materials are used according to the invention: 1.4462, 1.4162, 1.4362 or 1.4662 (European standard (EN)) . Higher strength compared to conventional techniques can also be obtained according to the hard brazing method.
この場合、燃料分配器用導管の、３ｍｍ〜４ｍｍ、特に３．１ｍｍ〜３．５ｍｍ、特に好ましくは約３．３ｍｍの壁厚のときに、十分な稼働強度及び耐久性を備えつつ、２００バール〜６００バール、特に３００バール〜５００バール、特に好ましくは５００バールまでの稼働圧力に耐えることが可能である。オーステナイト系の材料から製造された比較可能な燃料分配器用導管に比べて薄くなっていないとしても、少なくとも変わらない壁厚のために、本発明の燃料分配器の重量が減少する。二相鋼の、場合によっては、より高い購入コストは、成形中のより少ない加工コストによって及び／又はより小さい必要空間容積によって相殺される。その結果、変わらない及び／又は削減された構造寸法のときに、少なくとも変わらない製造コスト及び改良された耐久性の下で、高い要求が、当該稼働環境に対して満たされ得る。 In this case, when the wall thickness of the conduit for the fuel distributor is 3 mm to 4 mm, in particular 3.1 mm to 3.5 mm, particularly preferably about 3.3 mm, with sufficient operating strength and durability, 200 bar to It is possible to withstand operating pressures of 600 bar, in particular 300 bar to 500 bar, particularly preferably up to 500 bar. Even if it is not thin compared to a comparable fuel distributor conduit made from austenitic materials, the weight of the fuel distributor of the present invention is reduced, at least because of the unchanged wall thickness. In some cases, higher purchase costs of duplex steels are offset by less processing costs during forming and / or by a smaller required space volume. As a result, high requirements can be met for the operating environment, at least with unchanged manufacturing costs and improved durability, with unchanged and / or reduced structural dimensions.
別の利点は、例えば、インジェクタカップ、燃料分配器用導管の固定部材及び／又は燃料分配器用パイプ・クランプ並びにシールプラグ及び／又は貫通プラグのような、さらなる取付部品が、従来のオーステナイト鋼から製造され得るにもかかわらず、その材料適合性に起因して本発明にしたがって使用される二相鋼と一体的に且つ固着して結合され得ることにある。したがって、例えば、二相鋼から燃料分配器用導管を生産することは、従来の技術から公知の燃料分配器用の既存の生産設備内に組み込まれ得る。当該組み込みは、燃料分配器用導管のための二相鋼を本発明にしたがって使用する設備に変更するときの追加の設備投資を節減する。 Another advantage is that additional fittings are produced from conventional austenitic steel, such as, for example, injector cups, fuel distributor conduit fixing members and / or fuel distributor pipe clamps and seal plugs and / or through plugs. Nevertheless, due to its material compatibility, it can be integrally and firmly bonded with the duplex stainless steel used according to the present invention. Thus, for example, the production of fuel distributor conduits from duplex steel can be incorporated into existing production facilities for fuel distributors known from the prior art. The incorporation saves additional capital investment when changing the duplex stainless steel for the fuel distributor conduit to the equipment used in accordance with the present invention.
さらに、好ましくは、上記二相鋼は、重量％で表記すると、０．１％〜５％、特に０．１％〜３．５％、特に好ましくは３．５％未満のニッケル含有量を有する。応力腐食割れの危険が、当該少ないニッケル含有量によって十分に低減される。このため、同時に、燃料分配器の耐久性が向上される。 Furthermore, preferably, the duplex stainless steel has a nickel content of 0.1% to 5%, in particular 0.1% to 3.5%, particularly preferably less than 3.5%, expressed in weight%. . The risk of stress corrosion cracking is sufficiently reduced by the low nickel content. This simultaneously improves the durability of the fuel distributor.
さらに、上記二相鋼は、好ましくは、重量％で表記された以下の合金元素を有する：
クロム （Ｃｒ） ２０〜２５重量％
モリブデン （Ｍｏ） ２．５０〜３．５０重量％
残部は鉄及び溶融によって生成された不純物
In addition, the duplex stainless steel preferably has the following alloying elements expressed in weight percent:
Chromium (Cr) 20-25% by weight
Molybdenum (Mo) 2.50 to 3.50 wt%
The balance is iron and impurities generated by melting
したがって、フェライト成分が、５０〜７０％であり、オーステナイト成分が、５０〜３０％であるように、当該二相鋼の組織が有益に組成されている。当該二相鋼は、ロウ付け後に４９０ＭＰａ以上の０．２％耐力Ｒｐと、７６０ＭＰａ以上の引張強さＲＭとをさらに有する。 Therefore, the structure of the duplex stainless steel is beneficially composed so that the ferrite component is 50 to 70% and the austenite component is 50 to 30%. The duplex steel further has a 0.2% proof stress Rp of 490 MPa or higher and a tensile strength RM of 760 MPa or higher after brazing.
特に、接合工程、すなわち高温ロウ付け工程が、本発明にしたがって１０分未満で、特に好ましくは８分未満で、特に６分未満で、特に好ましくは５分未満で実施されることによって、上記の耐力及び引張強度は、当該使用された二相鋼の製品で得られる。次いで、１０００℃より高い高温ロウ付け温度までの加熱が実施され、その後に４００℃以下への冷却が実施される。当該冷却自体は、４分未満の期間内で継続する。したがって、二相鋼のオーステナイトとフェライトとの相組織の平衡に影響を及ぼすことなしに、十分な強度が、製造された燃料分配器で保証される、特にそのロウ付け地点に対して保証される。同時に高い冷却性能を持ちつつ、当該構成部品の技術的な洗浄度に対する要求を満たすため、特に、当該冷却工程は、気体冷却によって実施され、特に好ましくは窒素又は窒素の代わりのヘリウム若しくはアルゴンを用いた冷却によって実施される。 In particular, the bonding step, ie the high temperature brazing step, is carried out according to the invention in less than 10 minutes, particularly preferably in less than 8 minutes, in particular in less than 6 minutes, particularly preferably in less than 5 minutes, so that Yield strength and tensile strength are obtained with the product of the used duplex stainless steel. Next, heating to a high brazing temperature higher than 1000 ° C. is performed, and then cooling to 400 ° C. or lower is performed. The cooling itself continues within a period of less than 4 minutes. Therefore, sufficient strength is guaranteed with the manufactured fuel distributor, in particular for its brazing point, without affecting the equilibrium of the phase structure of the austenite and ferrite of the duplex stainless steel. . In order to meet the requirements for technical cleanliness of the component while having high cooling performance at the same time, in particular, the cooling step is carried out by gas cooling, particularly preferably using nitrogen or helium or argon instead of nitrogen. Carried out by cooling.
本発明の燃料分配器の好適な実施の形態を以下で説明し、図面で大まかに示す。当該図面は、本発明を容易に理解するために役立つ。 Preferred embodiments of the fuel distributor of the present invention are described below and are shown schematically in the drawings. The drawings are useful for easy understanding of the present invention.
図面では、繰り返される説明が、簡略化の理由から省略されるときでも、同じ符号は、同じ構成部品又は類似の構成部品に対して使用される。 In the drawings, the same reference numerals are used for the same or similar components, even when repeated descriptions are omitted for reasons of simplicity.
図１は、燃料分配器の投影図である。この燃料分配器１は、燃料分配器用フューエルレール２を有する。この場合、この燃料分配器用フューエルレール２は、中央に延在する燃料分配器用導管３を有する。インジェクタカップ４が、この燃料分配器用導管３から分岐されている。この場合、図２に示された当該インジェクタカップ４は、熱間継目５によって燃料分配器用導管３に結合されている。本発明によれば、この燃料分配器用導管３は、二相鋼から形成されている。その一方で、例えば、インジェクタカップ４は、従来のオーステナイト鋼から形成され得る。同様に、インジェクタカップ４を熱間継目５によって燃料分配器用導管３に結合させることが簡単に可能である。さらに、戻り管を有するシールプラグ６が、燃料分配器用導管３の、図面に対して右側の端部に配置されていて、送り管を有するシールプラグ７が、左側に配置されている。このため、燃料を燃料分配器用導管３の内部空間Ｉ内にその都度供給することが可能である。６００バールまでの有効圧が、当該内部空間Ｉ内に持続して印加され得る。この燃料分配器用導管３自体が、壁厚Ｗを有する。この壁厚Ｗは、従来の燃料分配器用導管に比べて変わらないか又は薄くなっているものの同時に、厳しくなる稼働条件に対して、より高い信頼性を併せ持つ。さらに、燃料分配器用導管３を詳しく図示されなかった内燃機関、特に内燃機関のシリンダヘッドに対して結合させるため、固定ホルダ８が、燃料分配器用導管３に対して少なくとも共に密接に結合されている。 FIG. 1 is a projection view of a fuel distributor. The fuel distributor 1 has a fuel distributor fuel rail 2. In this case, the fuel distributor fuel rail 2 has a fuel distributor conduit 3 extending in the center. An injector cup 4 is branched from the fuel distributor conduit 3. In this case, the injector cup 4 shown in FIG. 2 is connected to the fuel distributor conduit 3 by a hot seam 5. According to the present invention, the fuel distributor conduit 3 is formed of duplex steel. On the other hand, for example, the injector cup 4 can be formed from conventional austenitic steel. Similarly, it is simply possible to couple the injector cup 4 to the fuel distributor conduit 3 by means of a hot seam 5. Further, a seal plug 6 having a return pipe is arranged at the right end of the fuel distributor conduit 3 with respect to the drawing, and a seal plug 7 having a feed pipe is arranged on the left side. For this reason, it is possible to supply fuel into the interior space I of the fuel distributor conduit 3 each time. An effective pressure of up to 600 bar can be applied continuously in the interior space I. The fuel distributor conduit 3 itself has a wall thickness W. This wall thickness W remains unchanged or thinner compared to conventional fuel distributor conduits, but at the same time has higher reliability for harsh operating conditions. Furthermore, in order to connect the fuel distributor conduit 3 to an internal combustion engine not shown in detail, in particular to the cylinder head of the internal combustion engine, a fixed holder 8 is at least closely connected to the fuel distributor conduit 3 together. .
１ 燃料分配器
２ 燃料分配器用フューエルレール
３ 燃料分配器用導管
４ インジェクタカップ
５ 熱間継目
６ シールプラグ
７ シールプラグ
８ 固定ホルダ
Ｉ 内部空間
Ｗ 壁厚
DESCRIPTION OF SYMBOLS 1 Fuel distributor 2 Fuel rail for fuel distributor 3 Pipe for fuel distributor 4 Injector cup 5 Hot joint 6 Seal plug 7 Seal plug 8 Fixed holder I Internal space W Wall thickness
Claims (8)
前記燃料分配器用導管（３）が、二相鋼から形成されていることを特徴とする燃料分配器。 An internal combustion of a motor vehicle comprising a fuel distributor fuel rail (2) having one fuel distributor conduit (3) and a plurality of injector cups (4) branched from the fuel distributor conduit (3) In the engine fuel distributor (1),
The fuel distributor (3) is characterized in that the fuel distributor conduit (3) is made of duplex steel.
前記燃料分配器用フューエルレール（２）は、インジェクタカップ、シールプラグ、固定ホルダ又は接続流路としてのさらなる取付部品を有し、当該取付部品を高温ロウ付け又は硬ロウ付けによって前記燃料分配器用導管（３）に結合することを特徴とする方法。 A method for manufacturing a fuel distributor as claimed in any one of claims 1 to 4.
The fuel distributor fuel rail (2) has an additional attachment part as an injector cup, a seal plug, a fixed holder or a connection flow path, and the attachment part (high temperature brazing or hard brazing) 3. A method characterized by combining with 3) .
前記取付部品は、さらにオーステナイト鋼から形成されていることを特徴とする請求項１〜４のいずれか１項に記載の燃料分配器。The fuel distributor according to any one of claims 1 to 4, wherein the attachment component is further formed of austenitic steel.
全ての構成部品を二相鋼から形成し、当該構成部品を熱間接合法によって互いに結合することを特徴とする方法。 A method for manufacturing a fuel distributor as claimed in any one of claims 1 to 4.
A method characterized in that all components are formed from duplex stainless steel and the components are joined together by hot bonding .
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102013103471.3A DE102013103471A1 (en) | 2013-04-08 | 2013-04-08 | Fuel distributor made of duplex steel |
| DE102013103471.3 | 2013-04-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2014202209A JP2014202209A (en) | 2014-10-27 |
| JP6008432B2 true JP6008432B2 (en) | 2016-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2014057578A Active JP6008432B2 (en) | 2013-04-08 | 2014-03-20 | Fuel distributor made of duplex steel and method for manufacturing the fuel distributor |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2789845B1 (en) |
| JP (1) | JP6008432B2 (en) |
| CN (1) | CN104100426A (en) |
| DE (1) | DE102013103471A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015226795A1 (en) * | 2015-12-29 | 2017-06-29 | Robert Bosch Gmbh | Component of a hydraulic device, in particular a fuel injection system for internal combustion engines |
| EP3470664A1 (en) * | 2017-10-13 | 2019-04-17 | Continental Automotive GmbH | Fuel rail assembly for a fuel injection system and method of manufacturing such a fuel rail assembly |
| DE102019216523A1 (en) | 2019-10-28 | 2021-04-29 | Robert Bosch Gmbh | Component, in particular fuel line or fuel distributor, and fuel injection system |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1242095A (en) * | 1984-02-07 | 1988-09-20 | Akira Yoshitake | Ferritic-austenitic duplex stainless steel |
| EP0683241B1 (en) * | 1994-05-21 | 2000-08-16 | Yong Soo Park | Duplex stainless steel with high corrosion resistance |
| JP3841372B2 (en) * | 1997-02-26 | 2006-11-01 | 臼井国際産業株式会社 | High pressure fuel injection pipe and manufacturing method thereof |
| DE10307530B4 (en) * | 2003-02-21 | 2006-07-27 | Benteler Automobiltechnik Gmbh | Fastening element for a fuel rail for internal combustion engines |
| DE10333721B4 (en) * | 2003-07-23 | 2005-07-07 | Benteler Automobiltechnik Gmbh | Fuel rail with a connection piece |
| JP2005201254A (en) * | 2003-12-16 | 2005-07-28 | Usui Kokusai Sangyo Kaisha Ltd | High pressure fuel piping for diesel engine |
| US7159569B2 (en) * | 2005-05-11 | 2007-01-09 | Delphi Technologies, Inc. | Fabricated fuel rail assembly for direct injection of fuel |
| DE102005037951A1 (en) * | 2005-08-11 | 2007-02-15 | Robert Bosch Gmbh | Housing for automotive fuel injection valve has heat-treated sleeve with modified magnetic characteristics |
| JP4974331B2 (en) * | 2006-02-28 | 2012-07-11 | 株式会社神戸製鋼所 | Steel high-strength processed product excellent in impact resistance and strength-ductility balance and manufacturing method thereof, and fuel injection pipe for diesel engine and common rail manufacturing method excellent in high strength, impact resistance and internal pressure fatigue characteristics |
| JP5510992B2 (en) * | 2008-06-30 | 2014-06-04 | 臼井国際産業株式会社 | Fuel rail for high pressure direct injection internal combustion engine and method for manufacturing the same |
| JP5436928B2 (en) * | 2009-05-14 | 2014-03-05 | 山陽特殊製鋼株式会社 | Non-tempered steel for ferrite-pearlite hot forging with excellent fatigue strength and machinability and rail components used in common rail systems made of the non-tempered steel |
| JP5481396B2 (en) * | 2009-11-19 | 2014-04-23 | 新日鐵住金株式会社 | Common rail, common rail holder, and method of manufacturing common rail |
| JP6056132B2 (en) * | 2010-11-25 | 2017-01-11 | Ｊｆｅスチール株式会社 | Austenitic and ferritic duplex stainless steel for fuel tanks |
| JP5910168B2 (en) * | 2011-09-15 | 2016-04-27 | 臼井国際産業株式会社 | TRIP type duplex martensitic steel, method for producing the same, and ultra high strength steel processed product using the TRIP type duplex martensitic steel |
-
2013
- 2013-04-08 DE DE102013103471.3A patent/DE102013103471A1/en not_active Withdrawn
-
2014
- 2014-03-20 EP EP14160817.4A patent/EP2789845B1/en active Active
- 2014-03-20 CN CN201410104033.0A patent/CN104100426A/en active Pending
- 2014-03-20 JP JP2014057578A patent/JP6008432B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104100426A (en) | 2014-10-15 |
| EP2789845B1 (en) | 2019-05-08 |
| JP2014202209A (en) | 2014-10-27 |
| DE102013103471A1 (en) | 2014-10-09 |
| EP2789845A1 (en) | 2014-10-15 |
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