EP3433483A1 - Conduite haute pression - Google Patents

Conduite haute pression

Info

Publication number
EP3433483A1
EP3433483A1 EP17723922.5A EP17723922A EP3433483A1 EP 3433483 A1 EP3433483 A1 EP 3433483A1 EP 17723922 A EP17723922 A EP 17723922A EP 3433483 A1 EP3433483 A1 EP 3433483A1
Authority
EP
European Patent Office
Prior art keywords
line
pressure
section
pressure line
pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP17723922.5A
Other languages
German (de)
English (en)
Inventor
Alkan Göcmen
Peter Fuchs
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.)
Peter Fuchs Tech Group AG
Original Assignee
Peter Fuchs Tech Group AG
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 Peter Fuchs Tech Group AG filed Critical Peter Fuchs Tech Group AG
Publication of EP3433483A1 publication Critical patent/EP3433483A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • B21C37/16—Making tubes with varying diameter in longitudinal direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J7/00—Hammers; Forging machines with hammers or die jaws acting by impact
    • B21J7/02—Special design or construction
    • B21J7/14—Forging machines working with several hammers
    • B21J7/16—Forging machines working with several hammers in rotary arrangements
    • 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
    • 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
    • F02M55/04—Means for damping vibrations or pressure fluctuations in injection pump inlets or outlets
    • 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
    • F02M2200/31—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements
    • F02M2200/315—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements for damping fuel pressure fluctuations
    • 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
    • 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
    • F02M2200/9046—Multi-layered materials
    • 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

Definitions

  • the present invention relates to a high-pressure line for conveying a fluid under high pressure to a consumer, a method for producing such a high-pressure line and an internal combustion engine, in particular a diesel or gas engine, with such a high-pressure line as a fuel line according to the preambles of the independent claims.
  • common-rail injection systems In order to be able to meet the ever stricter regulations with regard to emissions, modern diesel engines have so-called common-rail injection systems. This is understood to mean a high-pressure injection system which consists of a high-pressure pump, a high-pressure accumulator and connecting lines, the injectors and an electronic control unit for the control and monitoring of the injection. Therefore, one generally speaks of an electronic diesel injection.
  • the primary benefit of common-rail injection is the reduced emission of soot. It is achieved by the finest atomization of the diesel during injection. The prerequisite is that the injection pressure as well as the injection rate during injection are constant. These properties are essentially borne by a constant pressure in the reservoir and this in turn by a sufficiently large volume in the memory.
  • the first variant has the advantage that each injector has its own memory for itself, from which it is supplied, so that the individual injectors influence each other relatively little.
  • this variant has the disadvantage that it requires a relatively large amount of space in the region of the cylinder head and at least in the case of attached individual storage requires additional components and sealing points.
  • the second variant has the advantage that it requires relatively little space in the region of the cylinder head and no additional components and sealing points in this area are required.
  • it has the disadvantage that it comes in the manifold due to the sharing of the same as memory for the injectors to pronounced pressure oscillations, which is detrimental to the injection quality and shortens the life of various components of the injection system.
  • a first aspect of the invention relates to a high-pressure line for conveying a fluid under high pressure to a consumer, in particular for supplying diesel fuel under injection pressure to one or more injectors of a diesel engine.
  • the high-pressure line comprises a first, a second and a third line section, which line sections are flowed through in succession in the operation of the high-pressure line according to the invention and are jointly formed by a one-piece component made of metal.
  • the first line section and the third line section each have a smaller flow cross-section or line diameter than the second line section arranged between them.
  • the cross section of the high-pressure line in the region of the second line section is at least twice as large, preferably at least three times as large as in the first line section and / or in the third line section.
  • the volume of the second line section is at least five times, more preferably at least ten times as large as the volume of the first and third line sections together.
  • the line in the region of the second line section has a ratio of outer diameter to inner diameter of greater than 1.5, in particular greater than 2.5.
  • austenitic stainless steel type X5CrNil8-10 (AISI
  • the one-piece component of the line, from which the first, second and third line sections of the high-pressure line are formed is free of joints, in particular free from welds, which is preferred, a particularly high compressive strength of this component can be achieved.
  • the high-pressure line is the one-piece component of the conduit, of which the first, the second and the third
  • Line portion of the high-pressure line are formed, at least in the region of the second line portion surrounded by one or more outer shells of an identical or of another material, preferably of a different metal.
  • High-pressure lines are provided with improved functionality, e.g. with an increased corrosion resistance inside the pipe or with an increased pressure vibration resistance.
  • the one-piece component of the line, from which the first, the second and the third line section of the high-pressure line are formed, and an outer casing a space surrounding the high-pressure line is formed, for the controlled discharge of any leaks.
  • This can be produced, for example, in a simple manner by adding the one-piece component to only at its outer periphery is provided with a profiling before it is provided with the sheath.
  • the outside diameter of an outer component surrounding the one-piece component from which the first, second and third line sections of the high-pressure line are formed is more than twice, preferably more than, in the region of the second line section Is three times the inner diameter of the line. Such diameter ratios have proven to be particularly practical.
  • a taper is present within the first line section, the second line section and / or the third line section for damping pressure oscillations in the line.
  • the first line section and / or the third line section and / or a possible taper in the first, the second or the third line section have been formed by rotary swaging or by use of rotary swaging.
  • the deformed portions have increased strength, which is desirable.
  • the one-piece component from which the first, the second and the third line section of the high-pressure line are formed from a preferably produced by cold drawing or deep drilling tube material with the cross section of the second line section by Rundkne- th or using Rotary swaging has been formed.
  • Such components can be produced in a cost effective manner and free of joints.
  • the high-pressure line has exactly one feed opening and exactly one discharge opening.
  • the first line section and the third line section are preferably connected to the end arranged the high-pressure line and as connecting portions for pressure-tight connection of the high-pressure line to high-pressure fluid inlet and discharge components formed, with advantage such that they have molded or kneaded thereon pressure rings.
  • Such lines are particularly suitable as outgoing from a common manifold supply lines for individual injectors or as modular bridge lines, which connect the injectors directly aufeinan- next following cylinders of an engine together and thus together form a continuous high-pressure fuel line.
  • the additional advantage is that less space is required in the area of the connection points.
  • the high-pressure line along its longitudinal extent arranged alternately line sections with a smaller line cross section or line diameter and with a larger line cross-section or line diameter, thus has a plurality of interconnected storage areas on narrower sections.
  • the line sections with the larger line cross-section or line diameter each have a radial discharge opening
  • each memory is assigned to an injector, which he on a single supplied its radial discharge opening subsequent supply line with fuel.
  • Such a high-pressure line advantageously has a single axial feed opening. As a result, the production can be facilitated and the number of sealing points can be kept low.
  • the high-pressure line according to the invention is bent, in particular in the region of the second line section.
  • Such lines have the advantage that they can be easily adapted to structural conditions.
  • a second aspect of the invention relates to a method for producing a high pressure line according to the first aspect of the invention.
  • a metal tube with a tube cross-section which is substantially uniform over its tube length is reduced at least two spaced-apart tube sections by round knobs in the region of these sections in its tube cross-section.
  • high-pressure lines according to the invention can be produced in a cost-effective manner, which moreover have the advantage that they have increased strength in the formed regions.
  • the rotary kneading takes place at least in the region of the ends of the metal tube.
  • the pipe ends can simultaneously be formed as connecting sections for pressure-tight connection of the high-pressure line thus produced to high-pressure fluid and laxative components, for example with molded or kneaded thereon pressure rings, by means of which a positive engagement in the axial direction at the respective pipe end Fasteners is possible.
  • the swaging is carried out in one or more pipe sections such that the respective pipe cross-section beyond the desired cross-sectional reduction is reduced and then, in particular by means of drilling, to the desired cross-sectional dimension is increased.
  • the swaging is carried out in one or more pipe sections such that the respective pipe cross-section around an inner tool, in particular around a mandrel, is kneaded until the material is completely applied to the tool, and then removed the tool is that the remaining pipe cross section in this area substantially corresponds to the tool cross section.
  • a third aspect of the invention relates to an internal combustion engine, preferably a diesel or gas engine, with a fuel high-pressure pump permanently providing fuel under injection pressure in operation, which is connected via high-pressure lines to injectors associated with the individual cylinders of the engine.
  • a fuel high-pressure pump permanently providing fuel under injection pressure in operation, which is connected via high-pressure lines to injectors associated with the individual cylinders of the engine.
  • at least a part of the high-pressure lines according to the first aspect of the invention is formed.
  • the fuel pump conveys into a high-pressure manifold, from which each injector leads a single high-pressure feed line to the respective injector.
  • the respective high-pressure feed line leading to the injector according to the first aspect of the invention is formed and has exactly one feed opening and exactly one discharge opening, and it is further preferred that the first line section and the third line section at the ends of High-pressure line are arranged and as connecting portions for pressure-tight connection of the line to high-pressure fluid inlet and discharge components are formed, preferably with pressure molded or kneaded thereon pressure rings.
  • the outer diameter of the high-pressure line in the region of the first line section and / or of the third line section is smaller than in the region of the second line section.
  • the high-pressure manifold according to the first aspect of the invention is formed and arranged along its longitudinal extent alternately line sections with smaller line cross section or line diameter and with a larger line cross-section or line diameter, wherein the line sections with larger cross-section or Line diameter each having a radial discharge opening on which the high-pressure feed line connects to the respective injector. It is further preferred that the high-pressure manifold has a single axial feed opening.
  • the injectors of directly consecutive cylinders of the engine are connected to one another via preferably high-pressure bridge lines arranged therebetween according to the first aspect of the invention, such that the bridge lines together form a continuous high-pressure line.
  • the fuel high-pressure pump thereby promotes a high-pressure line, which to one of the injectors leads and from there into a leading away from this injector bridge line.
  • the bridge lines each have exactly one feed opening and exactly one discharge opening, and it is further preferred that the first line section and the third line section are arranged at the ends of the respective high-pressure line and as connection sections for pressure-tight connection of the line to high-pressure fluid incoming and outgoing components are formed, preferably with it molded or kneaded thereon pressure rings. It is also preferred that the outer diameter of the bridge lines in the region of the first line section and / or the third line section is smaller than in the region of the second line section.
  • FIG. 1 shows a longitudinal section through a first inventive high-pressure feed line.
  • FIG. 2 shows a longitudinal section through a second inventive high-pressure feed line.
  • FIG 3 shows a longitudinal section through a third inventive high-pressure feed line.
  • FIG. 3a shows a section along the line A-A in Fig. 3rd
  • FIG. 6 shows a longitudinal section through a connecting end of a high-pressure line according to the invention with a pressure ring kneaded thereon;
  • FIG. 7 shows a longitudinal section through a section of a first high-pressure manifold according to the invention
  • FIG. 8 shows a longitudinal section through a section of a second high-pressure manifold according to the invention with high-pressure feed lines connected thereto according to the invention
  • Fig. 8a is a section along the line B-B in Fig. 8;
  • FIG. 10 shows a longitudinal section through a partial section of a third high-pressure manifold according to the invention.
  • FIG. 1 shows a longitudinal section through a first inventive high-pressure injector feed line of a common-rail injection system of a diesel engine for connecting the injector to a high-pressure manifold of the injection system.
  • the high-pressure injector feed line has three line sections 1, 2, 3, which are flowed through in succession by the diesel fuel entering the line at the feed opening 7 and flowing off via the discharge opening 8 to the injector, and together formed by a one-piece tubular body 4 made of a low-alloyed tempering steel of the type 42CrMo4.
  • the tubular body 4 is free of joints.
  • the first line section 1 and the third line section 3, which are formed at the ends of the Hoch horrinjektorspeise Engel and are designed as straight pipe sections, each have a smaller ren pipe diameter than the arranged between them second line section 2, which is designed as a 90 "elbow
  • the line diameter in the second line section 2 corresponds approximately to 2.5 times the line diameter in the first and third line sections 3, respectively.
  • the second line section 2 is approximately the same length as the first 1 and the third line section 3 together, and its volume is more than five times as large as the volume of the first 1 and the third line section 3 together.
  • the first pipe section 1 and the third pipe section 3 were formed by swaging, and had a cross section identical to that of the second pipe section 2 before swaging. Accordingly, the outside diameter of the high pressure pipe is smaller in the area of the first pipe section 1 and the third pipe section 3 than in the area of the second line section 2, and the ratio of outer diameter to inner diameter is approximately 1.6 in the area of the second line section 2, while it is approximately 3.4 in the area of the first line section 1 and the third line section 3.
  • FIG. 2 shows a longitudinal section through a second high-pressure injector feed line according to the invention of a common-rail injection system, which differs from that shown in FIG. 1 only in that the third line section 3 has a taper 6 in the region of the discharge opening 8, for the purpose of damping Pressure oscillations in the pipe.
  • FIG. 3 shows a longitudinal section through a third inventive high-pressure injector feed line of a common-rail injection system
  • FIG. 3a This high-pressure Injektorspeisetechnisch differs from that shown in Fig. 1 in that the three line sections 1, 2, 3 forming one-piece component 4 is thin-walled and is formed from tempered steel and about his whole
  • first line section 1 and the third line section 3 were formed by rotary swaging. Before swaging, they had a cross-section identical to that of the second line section 2.
  • FIG 4 shows a longitudinal section through a first high pressure bridge line according to the invention (also referred to as jumper line) of a common rail injection system of a diesel engine for connecting two injectors of the engine.
  • This high-pressure bridge line differs from the high-pressure injector feed line shown in FIG. 1 only in that it has a mirror-image form, in which the end-side first and third line sections 1, 3 are identically designed and oriented in the same direction and over a bow-shaped middle second line section 2 are interconnected.
  • the second line section 2 is significantly longer than in the high-pressure injector feed line shown in Fig. 1, whereby its volume is correspondingly larger. Otherwise, all that has previously been said for the high-pressure injector feed line shown in FIG. 1 also applies to this high-pressure bridge line.
  • Fig. 5 shows a longitudinal section through a
  • Half of a second inventive high-pressure bridge line which has the same mirror-image basic form has as the high-pressure bridge line shown in Fig. 4.
  • the bridge line shown here differs from the line shown in FIG. 4 only in that it has alternating line sections with a smaller line diameter 3, 3a and line sections with a larger line diameter 2a, 2b along its longitudinal extent, namely a total of five line sections smaller line diameter (because of the representation of only one half of the line only two (3, 3a) and a part of a third visible) and a total of four line sections with a larger line diameter (only one half of the line shown only two (2a, 2b) visible ).
  • the end-side line sections 1, 3 are identical to the high-pressure bridge line illustrated in FIG. 4.
  • FIG. 6 shows a longitudinal section through an end-side connection section 3 with discharge opening 8 of a high-pressure line according to the invention, as shown in the preceding figures, with a pressure ring 11 kneaded thereon.
  • FIG. 7 shows a longitudinal section through part of a first high-pressure manifold according to the invention of a common-rail injection system of a diesel engine, with which a plurality of high-pressure feed lines for the injectors of the injection system are supplied.
  • the high-pressure collecting line has a supply line section 1 with a feed opening 7, a distributor section 2 and, starting from the distributor section 2, a plurality of discharge channels 3, which each form a discharge opening 8 of the collecting line, for supplying the feed lines to be connected thereto for the injectors.
  • the supply line section 1, the distributor section 2 and the discharge channels 3 are in intended operation sequentially flows through from the entering at the feed opening 7 in the manifold and flowing through the discharge openings 8 to the feed lines for the injectors diesel fuel and are formed together by a one-piece tubular body 4 made of a quenched, low alloy steel with a tensile strength greater than 900 MPa.
  • the supply line section 1 and the distributor section 2 are designed as straight tube sections arranged in succession with coincident center axes, while the discharge channels 3 branch off radially from the distributor section 2.
  • the feed pipe portion 1 has a smaller pipe diameter than the manifold portion 2, and the exhaust ducts 3 have smaller pipe diameters than the feed pipe portion 1.
  • the pipe diameter of the manifold portion 2 is about twice the pipe diameter of the feed pipe portion 1, whose pipe diameter is again about three times the pipe diameter Ab exchangeskanäle 3 corresponds.
  • the feed line section 1 was formed by swaging, and before swaging, had a cross section identical to that of the manifold section 2. Accordingly, the outside diameter of the manifold in the region of the first feed line section 1 is smaller than in the region of the second manifold section 2. The ratio of outside diameter to inside diameter is in the region of the distributor section 2 about 2.0, while in the region of the supply line section 1 is about 3.6.
  • the discharge channels 3 with the discharge openings 8 were introduced by drilling into the wall of the distributor section 2.
  • Fig. 8 shows a longitudinal section through a
  • a second high-pressure manifold 12 Part of a second high-pressure manifold 12 according to the invention with attached thereto erfindungsge have high-pressure feed lines 13 and Fig. 8a shows a section along the line BB in Fig. 8.
  • Sectioning of Fig. 8 follows the line C-C in Fig. 8a.
  • the high-pressure manifold 12 shown here differs from the manifold shown in Fig. 7 in that the one-piece tubular body 4, which (not shown), the supply line section, the manifold portion 2 and the discharge channels 3 with the discharge openings, in the areas between the Connections 9, 10 of the high-pressure feed lines 13 is surrounded by an outer casing 4 b made of metal, which forms together with the tubular body 4, a pipe body 4 surrounding space 5 for the controlled discharge of any leaks.
  • FIG 9 shows a section through two high-pressure bridge lines 15 according to the invention which are connected to an injector 14 (in each case only partially shown).
  • the high-pressure bridge lines 15 shown here differ from the bridge line shown in FIG. 4 in that they are provided with a casing 4a except for the connection ends and a pressure ring 11 which is kneaded on each end is present at the end of the connection Line end by means of a union nut 9 to a terminal block 10 of the injector 14 is used.
  • FIG. 10 shows a longitudinal section through part of a third high-pressure manifold according to the invention of a common-rail injection system of a diesel engine. motors, with which several high-pressure feed lines for the injectors of the injection system are supplied.
  • This high-pressure manifold differs from the manifold shown in Fig. 7 only in that the one-piece tubular body 4, which forms the supply line section 1, the manifold section 2 and the discharge channels 3 with the discharge openings 8, in the region of the distributor section 2 along its longitudinal extension one behind the other arranged alternately line sections 6 with smaller line diameter and line sections 2a, 2b, 2c having a larger cable diameter.
  • the storage section 2 forms a plurality of storage areas connected to one another over narrower sections, of which one respective radial discharge channel 3 with discharge opening 8 leaves. Accordingly, during the intended use of this high-pressure manifold, each of these storage areas 2a, 2b, 2c is assigned exactly to one injector, which it supplies with fuel via a single supply line adjoining its radial discharge opening 8.
  • the tapered pipe sections 6 with the smaller pipe diameter were produced by swaging.

Landscapes

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

Abstract

L'invention concerne une conduite haute pression servant à l'acheminement d'un fluide sous haute pression vers un consommateur, en particulier à l'amenée de carburant sous pression d'injection à un ou plusieurs injecteurs (14) d'un moteur à combustion interne. Ladite conduite comprend une première (1), une deuxième (2) et une troisième (3) partie de conduite, lesdites parties de conduite (1, 2, 3) étant parcourues successivement en mode de fonctionnement normal de la conduite haute pression et étant formées ensemble d'un élément (4) d'un seul tenant en métal, et la première partie de conduite (1) et la troisième partie de conduite (3) présentant chacune une section transversale d'écoulement plus petite que celle de la deuxième partie de conduite (2) agencée entre la première et la troisième. Les conduites haute pression selon d'invention rendent possible la réalisation de systèmes d'injection à rampe commune permettant de disposer, même sans injecteurs munis d'accumulateurs individuels intégrés ou rapportés et avec un encombrement réduit en conséquence dans la zone de la culasse, d'un accumulateur propre à chaque injecteur, proche de l'injecteur et alimentant ledit injecteur, de sorte qu'il est possible d'éviter en grande partie les oscillations de pression dans le système et d'obtenir une excellente qualité de l'injection et une durée de vie prolongée.
EP17723922.5A 2016-05-11 2017-05-09 Conduite haute pression Withdrawn EP3433483A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH6152016 2016-05-11
PCT/CH2017/000042 WO2017193224A1 (fr) 2016-05-11 2017-05-09 Conduite haute pression

Publications (1)

Publication Number Publication Date
EP3433483A1 true EP3433483A1 (fr) 2019-01-30

Family

ID=58709663

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17723922.5A Withdrawn EP3433483A1 (fr) 2016-05-11 2017-05-09 Conduite haute pression

Country Status (5)

Country Link
US (1) US10746147B2 (fr)
EP (1) EP3433483A1 (fr)
JP (1) JP2019519725A (fr)
CN (1) CN109196213A (fr)
WO (1) WO2017193224A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3437579B1 (fr) * 2017-08-04 2023-07-12 Erbe Elektromedizin GmbH Instrument cryochirurgical
EP3604787B1 (fr) * 2018-08-03 2021-10-06 Vitesco Technologies GmbH Rampe de carburant destinée à un système d'injection de carburant et procédé de fabrication d'une telle rampe de carburant
CN211819757U (zh) * 2019-09-02 2020-10-30 福爱电子(贵州)有限公司 一种燃油喷射单元
JP2023091650A (ja) * 2021-12-20 2023-06-30 臼井国際産業株式会社 車両用気体燃料の供給配管

Family Cites Families (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4149568A (en) * 1977-12-07 1979-04-17 Caterpillar Tractor Co. Double walled fuel line
JP3763698B2 (ja) * 1998-10-22 2006-04-05 株式会社日本自動車部品総合研究所 圧力脈動を緩和し得る燃料供給システムの設計方法
JP4226732B2 (ja) * 1999-07-12 2009-02-18 株式会社オティックス コモンレール
DE10140058A1 (de) * 2001-08-16 2002-10-24 Bosch Gmbh Robert Verfahren zur Herstellung eines Kraftstoffhochdruckspeichers
JP3855846B2 (ja) * 2002-05-21 2006-12-13 トヨタ自動車株式会社 内燃機関の燃料噴射制御装置
JP2004036542A (ja) * 2002-07-04 2004-02-05 Usui Kokusai Sangyo Kaisha Ltd ディーゼルエンジン用蓄圧式燃料噴射管
DE10241657A1 (de) 2002-09-09 2004-03-25 Robert Bosch Gmbh Hochdruckleitung für Kraftstoffeinspitzsysteme von Brennkraftmaschinen
DE10304961B3 (de) 2003-02-06 2004-08-19 Robert Bosch Gmbh Verfahren zur Herstellung eines Kraftstoffhochdruckspeichers
FI119702B (fi) 2003-10-17 2009-02-13 Waertsilae Finland Oy Polttomoottorin laitteisto korkeapaineputken vuotoja varten
JP4566132B2 (ja) * 2003-12-22 2010-10-20 本田技研工業株式会社 筒状部材の成形方法
DE102004016508A1 (de) * 2004-04-03 2005-10-27 Robert Bosch Gmbh Common-Rail-System
JP2007270682A (ja) * 2006-03-30 2007-10-18 Honda Motor Co Ltd エンジン側燃料配管およびタンク側燃料配管を備える燃料供給装置
US8038178B2 (en) * 2009-03-31 2011-10-18 Hitachi, Ltd High pressure fuel pipe construction for an internal combustion engine
US8733324B2 (en) * 2010-02-16 2014-05-27 Cummins Intellectual Properties, Inc. Fuel heating system and method
US8844500B2 (en) * 2011-01-22 2014-09-30 Cummins Intellectual Property, Inc. Enclosure for high pressure fuel rail
CH705729A1 (de) * 2011-11-07 2013-05-15 Liebherr Machines Bulle Sa Einspritzsystem.
CN104093968B (zh) * 2012-02-07 2016-10-12 甘瑟-许德罗玛格股份公司 燃料喷射阀和用于喷射燃料的装置
JP5863107B2 (ja) * 2012-02-28 2016-02-16 臼井国際産業株式会社 直噴式エンジン用高圧燃料配管の端末構造
JP6012208B2 (ja) * 2012-03-14 2016-10-25 本田技研工業株式会社 エンジンの燃料供給装置
JP2014092077A (ja) * 2012-11-05 2014-05-19 Otics Corp デリバリパイプ
JP6091920B2 (ja) * 2013-02-14 2017-03-08 ヤンマー株式会社 燃料高圧管及びその接続方法
MX2016011092A (es) 2014-02-25 2017-04-06 Usui Kokusai Sangyo Kk Tubo de acero para tuberia de inyeccion de combustible y tuberia de inyeccion de combustible utilizando el mismo.
DE102014014818A1 (de) * 2014-04-06 2015-11-12 IFUTEC Ingenieurbüro für Umformtechnik GmbH Warm-Kalt-Umformung von Hohlkörpern
US9400009B2 (en) * 2014-04-08 2016-07-26 U.S. Manufacturing Corporation Method for forming a variable wall light weight axle shaft with friction welded flange
CN204061011U (zh) * 2014-08-13 2014-12-31 大陆汽车电子(长春)有限公司 自锁式内置阻尼器及具有其的燃油导轨总成
US10605212B2 (en) * 2015-08-04 2020-03-31 Westport Power Inc. Multi-fuel rail apparatus
GB201514053D0 (en) * 2015-08-10 2015-09-23 Delphi Int Operations Lux Srl Novel fuel rail for injection system
EP3153698B8 (fr) * 2015-10-07 2019-12-18 CPT Group GmbH Ensemble de rail de carburant
JP6387993B2 (ja) * 2016-03-23 2018-09-12 トヨタ自動車株式会社 内燃機関の燃料噴射装置
US10544769B2 (en) * 2016-10-07 2020-01-28 Caterpillar Inc. Stand-alone common rail capable injector system
JP7102755B2 (ja) * 2018-02-02 2022-07-20 マツダ株式会社 エンジンの燃料供給装置

Also Published As

Publication number Publication date
JP2019519725A (ja) 2019-07-11
WO2017193224A1 (fr) 2017-11-16
US20190145363A1 (en) 2019-05-16
US10746147B2 (en) 2020-08-18
CN109196213A (zh) 2019-01-11

Similar Documents

Publication Publication Date Title
DE19721175C2 (de) Sammelstrang und Verfahren zu dessen Herstellung
EP3433483A1 (fr) Conduite haute pression
EP3464870A1 (fr) Accumulateur haute pression et procédé de réalisation d'un accumulateur haute pression
DE19546545B4 (de) Saugrohrmodul
DE102006037179A1 (de) Kraftstoffeinspritzsystem mit einem Druckschwingungsdämpfer
EP2052149B1 (fr) Dispositif d'injection de carburant dans la chambre de combustion d'un moteur à combustion interne
DE10247958A1 (de) Kraftstoff-Einspritzvorrichtung für eine Brennkraftmaschine
EP3827166A1 (fr) Pièce de raccordement pour un injecteur de carburant d'un moteur à combustion interne
EP3199794B1 (fr) Rampe de distribution de carburant et son procede de fabrication
DE19936685A1 (de) Kraftstoffhochdruckspeicher
WO2016055293A1 (fr) Système d'injection d'accumulateur pour moteurs a combustion interne
DE102018209787A1 (de) Brennstoffverteiler für Brennkraftmaschinen
DE102018212282A1 (de) Fluidverteiler, insbesondere Kraftstoffverteiler für ein Kraftstoffeinspritzsystem eines Fahrzeuges, sowie Verfahren zur Herstellung eines Fluidverteilers
EP1359318A1 (fr) Accumulateur de combustible à haute pression ayant des propriétés amortissantes améliorées
DE10214404A1 (de) Bauelement, insbesondere Gehäuse einer Hochdruck-Kraftstoffpumpe, sowie Verfahren zu seiner Herstellung
DE10143519A1 (de) Kraftstoffhochdruckspeicher für ein Speichereinspritzsystem
DE4321998B4 (de) Pulsationsdämpfung bei einer Kraftstoffeinspritzanlage
EP1621761A2 (fr) Réservoir avec enveloppe en fibre
DE102019103041B4 (de) Sammeldruckleitung für ein Kraftstoffeinspritzsystem einer Verbrennungskraftmaschine
DE102020122503B3 (de) Kraftstoffeinspritzsystem zur Kraftstoff-Wasser-Einspritzung für eine Verbrennungskraftmaschine
DE102011118756A1 (de) Druckspeicher sowie Kraftstoffeinspritzeinrichtung mit einem solchen
EP1398496A2 (fr) Conduite haute-pression pour système d'injection de carburant de moteur à combustion interne
DE102005051920B4 (de) Rohrleitungsstück für eine Abgasleitung
DE10326933B4 (de) Kraftstoffhochdruckspeicher für eine mehrzylindrige Brennkraftmaschine
DE102018219947A1 (de) Brennstoffverteiler für Brennkraftmaschinen

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20181023

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20201207

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20210618