EP1893867B1 - Corps de chambre d'accumulation haute pression presentant des elements d'etranglement haute pression - Google Patents

Corps de chambre d'accumulation haute pression presentant des elements d'etranglement haute pression Download PDF

Info

Publication number
EP1893867B1
EP1893867B1 EP06754873A EP06754873A EP1893867B1 EP 1893867 B1 EP1893867 B1 EP 1893867B1 EP 06754873 A EP06754873 A EP 06754873A EP 06754873 A EP06754873 A EP 06754873A EP 1893867 B1 EP1893867 B1 EP 1893867B1
Authority
EP
European Patent Office
Prior art keywords
pressure
pressure accumulator
throttle
accumulator chamber
fuel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
EP06754873A
Other languages
German (de)
English (en)
Other versions
EP1893867A1 (fr
Inventor
Markus Degn
Horst Rosenkranz
Peter Thurner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1893867A1 publication Critical patent/EP1893867A1/fr
Application granted granted Critical
Publication of EP1893867B1 publication Critical patent/EP1893867B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • 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
    • F02M61/166—Selection of particular 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
    • 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
    • F02M2200/28—Details of throttles in fuel-injection apparatus
    • 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

Definitions

  • the invention relates to a high-pressure storage space body with high-pressure throttles, in particular a high-pressure storage space body as used in high-pressure accumulator injection systems (common rail) in self-igniting internal combustion engines, according to the claims 1 and 5.
  • Out DE 10103 195 A1 is a fuel injector with a high-pressure accumulator known.
  • the high-pressure accumulator has a plurality of connecting holes, which serve the fuel discharge.
  • High-pressure supply lines leading to fuel injectors are connected to the connection bores.
  • the connection bores of these high pressure supply lines is assigned at least one throttle element, which has a single-stage throttle channel.
  • the throttle element is pressed as a Einpressdrosselelement in a wall of the high-pressure accumulator space, wherein the throttle element is held non-positively on at least one contact point.
  • a fuel injection device comprises a high-pressure fuel accumulator and a plurality of the fuel discharge from the high-pressure fuel storage branch pipes serving. These each have at one end a connection head for connecting the branch pipe with an associated connection piece of the high-pressure fuel storage, wherein in each of the branch pipes, a throttle is mounted.
  • the throttle is formed in a carrier element, which is fixed in the region of the connection head by fixing elements which are formed with the formation of the connection head and which constrict a clear width of the branch pipe on both sides of the carrier element.
  • the throttle is in the support member as a through hole with a first partial bore and a second partial bore, that is executed in two stages. The through hole is during the upsetting of the Terminal head secured by an inserted, stepped cylindrical êtorn, which is formed traceable.
  • the carrier element preferably has a cylindrical lateral surface.
  • a fuel injection device with a high-pressure fuel storage is known, to which branch pipes are screwed.
  • the branch pipes each include a throttle for reducing pressure pulsations in the fuel injector.
  • the throttles are each formed as a pipe piece, which is arranged at one end of the branch pipe, to which a connection head is attached, or inside the branch pipe near this end.
  • the high-pressure throttles serve to reduce pressure pulsations in the high-pressure reservoir chamber body and in the fuel injector.
  • a reduction in the pressure peaks of the pressure pulsations has a positive effect on the strength of the high-pressure reservoir chamber body as well as on the other hand has a positive effect on the high-pressure resistance of the fuel injector.
  • the solution proposed by the invention is based on the object of introducing a high-pressure throttle element into the wall of the high-pressure reservoir chamber body either through a radially extending connection bore or through the pressure chamber of the high-pressure reservoir.
  • the Einpressdrosselelement is proposed, which is produced either by way of deep drawing or extrusion molding.
  • the Einpressdrossel stresses which may have a one- or two-stage through-hole, are pressed by a pressing operation either in the provided in the wall of the high pressure accumulator space (common rail) connection holes for the high pressure line connections (high pressure fittings). It creates a positive connection, z. B. an interference fit that requires no further manufacturing technology aftertreatment and is particularly high pressure tight.
  • the press-fit throttle body is a thin-walled component having a throttle-opening at the bottom.
  • the deep-drawn component can also be pressed by means of a press-fit operation in the connection holes for the high pressure supply lines to the individual fuel injectors, whereby a non-positive connection, given by a press fit, is achieved.
  • EinpressdrosselSystem As an alternative to pressing the Einpressdrossel Congress in the radially extending connecting holes in the wall of the high-pressure reservoir (common rail) EinpressdrosselSystem made of plastic or spring steel by injection molding, stamping, bending or manufactured by means of Zerspantechnik from a round material and in the Cavity of the high pressure storage space body (common rail) are introduced.
  • the press-fit throttle body is made of resilient steel or plastic.
  • the press-fit throttle body can be introduced via the radially extending connection bore into the wall of the high-pressure reservoir chamber body (common rail).
  • the shape of the Einpressdrossel emotionss made of resilient steel or plastic corresponds approximately to a double cone, the narrowest Einschnürstelle forms the throttle cross-section.
  • the Einpressdrossel emotions of resilient steel or plastic material is supported both on the side of the connection hole, which opens into the high-pressure storage space, as well as from a z.
  • FIG. 1 The representation according to FIG. 1 is an example of a Einpresshrrosseliatas remove, which is not part of the invention.
  • FIG. 1 includes a high-pressure accumulator 10 made of metallic material, be it a laser-welded high-pressure reservoir 10 (LWR rail) or a forged high-pressure reservoir 10 (WFR, Warm Forged Rail), a wall 12 whose thickness is designed according to the system pressure.
  • a connecting piece 16 is attached to a contact surface 38, which preferably has a material fit with the lateral surface 14 in the area of the contact surface 38, such as, for example, FIG. B. is welded by means of the connecting piece 16, a high-pressure line 18 is fixed by means of a union nut 20 at the high pressure storage space 10.
  • the connecting piece 16 has an external thread 24 which cooperates with the internal thread of the union nut 20.
  • the high-pressure line 18 comprises a cross-section, which is identified by the reference numeral 22.
  • the high pressure line 18, with a in FIG. 1 not shown fuel injector is pressurized with fuel under system pressure or a high-pressure pump is connected to the high-pressure accumulator 10 is employed with its conical end 26 serving as a sealing cone 36 in the wall 12 of the high-pressure accumulator 10.
  • a Anstellbund 40 is provided above the conical end 26 of the high-pressure feed line 18. On the Anstellbund 40, an inner ring 42 of the union nut 20 is supported.
  • the conically shaped end 26 of the high-pressure feed line 18 is pressed into the formation 36 in the wall 12 of the high pressure accumulator 10 so that there is a pressure-tight connection between the conical end 26 of the high pressure line 18 and the wall 12 of the high-pressure accumulator 10.
  • connecting bores 30 are executed according to the number of under high pressure fuel to be supplied fuel injectors or connected high-pressure pump.
  • connection bores 30 are throttle body 28, which according to the in FIG. 1
  • high pressure supply line 18 of the throttle body 28 is pressed from round material into the connection bore 30.
  • the lateral surface 32 of the throttle body 28 thus forms a non-positive connection between the throttle body 28 and the wall 12 of the high pressure accumulator 10th
  • the throttle body 28 includes a through hole, which serves as a throttle passage 34.
  • FIG. 1.1 The representation according to Figure 1.1 is the manufacturable from round material, plastic or spring plate throttle body as shown in FIG FIG. 1 to be seen in an enlarged view.
  • the throttle body 28 made of round material has a through-bore which has a first diameter 44 and a second diameter 46.
  • the first diameter 44 lies on the side of the first end face 48 of the throttle body 28, whereas the second diameter 46 of the throttle channel 34 opens in a second end face 50 of the throttle body 28.
  • the respective diameters 44 and 46, in which the throttle channel 34 may be designed, may also be in other proportions than in Figure 1.1 shown extend within the throttle body 28.
  • the in Figure 1.1 illustrated throttle body 28 with two diameters 44 for the throttle passage 34 thus represents a stepped throttle, wherein the second diameter 46 of the throttle passage 34 opens into the flow cross section 22 of the high pressure line 18 connected above the throttle body 28.
  • the representation according to FIG. 2 is an embodiment of the present invention proposed Einpressdrossel refer.
  • the deep-drawn throttle body 52 as shown in FIG. 2 is pressed into the connection bore 30 and abuts with an upper support surface 56 in the region of the formation 36 in the wall 12 of the high pressure storage space 10.
  • the lateral surface extending below the support surface 56 bears against the inner wall of the connection bore 30.
  • the high pressure supply line (not shown) is connected according to this embodiment by means of a union nut 20 on the connector 16 (high pressure fitting).
  • Figure 2.1 shows the formed as a deep-drawn throttle body as shown in FIG FIG. 2 on an enlarged scale.
  • the deep-drawn throttle body 52 has a substantially cup-shaped appearance and is designed in a suitable for thermoforming, small wall thickness 54.
  • the throttle channel 34 In the bottom of the substantially cup-shaped, deep-drawn throttle body 52 is the throttle channel 34, which is designed according to this embodiment as a simple through hole.
  • the throttle channel 34 opposite side of the deep-drawn throttle body 52 is provided with a diameter extension.
  • the throttle channel 34 is in the mounted in the connection bore 30 state of the deep-drawn throttle body 52 still within the connection bore 30 and can, as shown in the embodiment of Figure 4, protrude into the cavity of the high-pressure accumulator 10, which is bounded by the wall 12.
  • FIG. 3 shows a further embodiment of the present invention proposed Einpressdrossel.
  • FIG. 3 In the illustration according to FIG. 3 is a cylinder-shaped throttle body 58 from an open end of the high-pressure accumulator chamber 10 in the cavity 68 axially inserted.
  • Reference numeral 76 denotes a dome-shaped elevation on the lateral surface of the cylinder-shaped throttle body 58, which snaps into the connecting bore 30 in the wall 12 of the high-pressure reservoir 10 in the mounted state of the cylindrical throttle body 58 and thus the axial position of the cylindrical throttle body 58 in the cavity 68 of the high pressure accumulator 10 defined.
  • In the assembled state is below each of the wall 12 of the high-pressure accumulator 10 traversing port bore 30 is a cylindrically shaped throttle body 58.
  • a throttle opening 72 is executed, via which the fuel for damping of pressure pulsations Cavity 68 into the connection bore 30 and from there into the on the lateral surface 14 of the high-pressure accumulator 10 connected high-pressure line 18 einschmannt.
  • the representation according to Figure 3.1 is an enlarged view of the cylinder-shaped throttle body according to FIG. 3 refer to.
  • the cylinder-shaped throttle body 58 has a lateral surface 64, which is provided in the axial direction with a longitudinal slot 60.
  • the longitudinal slots 60 in the lateral surface 64 of the cylindrical throttle body 58 delimiting ends are provided with fillets 62. Due to the longitudinal slot 60 in the circumferential surface 64 of the cylinder-shaped throttle body 58 of this is resilient and can be seen in the insertion direction 66 in the cavity 68 of the high-pressure accumulator chamber 10 as shown in FIG FIG. 3 mount in the axial direction.
  • the cylinder-shaped throttle body 58 is fixed in the axial direction in the cavity 68 of the high-pressure reservoir 10.
  • a corresponding number of cylinder-shaped throttle bodies 58 are introduced in the insertion direction 66 from an open end of a preferably laser-welded high-pressure reservoir 10.
  • the cylindrical throttle body 58 can be in the axial direction of insertion Insert 66 of an open end of the high-pressure accumulator 10 in this and then rotate in their corresponding radial position below the individual connection holes 30 so that the dome-shaped elevation 76 in the circumferential surface 64 of the cylinder-shaped throttle body 58 engages in the connection bore 30 and the cylinder-shaped throttle body 58th thus locked within the cavity 68 of the high-pressure storage space 10.
  • the representation according to FIG. 4 is to be taken as a Hyperboloid created Einpressdrossel Stress 80. From the illustration according to FIG. 4 It is apparent that the connecting piece 16 according to this embodiment is also joined cohesively to the lateral surface 14 of the wall 12 of the high-pressure storage space 10. The cohesive joining takes place z. B. by way of laser welding, whereby a high degree of automation in mass production can be achieved.
  • a funnel-shaped configuration 36 which serves as a sealing cone.
  • the serving as a sealing cone formation 36 in the wall 12 of the high-pressure accumulator 10 is in a made with a continuous diameter connection bore 30 on.
  • a trained as hyperboloid throttle body 80 is clamped. Trained as a hyperboloid throttle body 80 is supported on the one hand at a first contact point 84 within the formation 36 of the wall 12 of the high-pressure accumulator 10 and on the other hand frictionally held at a second contact point 86 at the discharge point of the connection bore 30 into the cavity 68 of the high-pressure accumulator. From the illustration according to FIG.
  • the throttle body 80 designed as a hyperboloid projects around a projection 90 into the cavity 68 of the high-pressure reservoir 10. Due to the projection 90 of the throttle body 80, the spring force, ie the holding force, generated at a second contact point 86 of the throttle body 80 in the connection bore 30.
  • the representation according to Figure 4.1 is formed as a hyperboloid throttle body as shown in FIG. 4 to be taken on an enlarged scale.
  • the throttle body 80 which is in the form of a hyperboloid, has a substantially double conical shape.
  • the throttle body 80 designed as a hyperboloid comprises a constriction site 82 which limits the flow cross section of the throttle passage 34 (see reference numeral 96 throttle cross section).
  • the throttle body 80 designed as a hyperboloid comprises a first opening 92, which is opposite the high-pressure line 18, and a second opening 94, which enters the cavity 68 of the high-pressure reservoir 10 as shown in FIG FIG. 4 empties.
  • the outer circumferential surface in the region of the first opening 92 forms the bearing surface 56, with which formed as a hyperboloid throttle body 80 is supported on the formation 36 in the wall 12 of the high-pressure accumulator space 10.
  • the portion of the hyperboloid-shaped throttle body 80 below the constriction site 82 has a plurality of axial slots 88, of which, according to FIG Figure 4.1 for illustrative reasons, only one is shown. Further axial slots 88 are in the plane of the drawing.
  • a high elasticity arises in the lower region of the throttle body 80 in the form of a hyperboloid so that the hyperboloidal throttle body 80 can simply be pushed into the connecting bore 30 in the radial direction and at the first contact point 84 and at the second contact point 86 (see illustration according to FIG. 4 ) enters into a frictional connection with the molding 36 and the inner wall of the connection bore 30.
  • the in Figure 4.1 illustrated, designed as hyperboloid throttle body 80 is preferably made of a thin-walled metallic material.
  • the throttle body 80 designed as a hyperboloid may also be made of plastic. In this case, however, it must be ensured that the plastic material is chosen such that it withstands the pressure prevailing in the cavity 68 of the high-pressure storage space 10.
  • the reduction of the pressure pulsations in the high-pressure reservoir 10 via the inventively proposed, designed as Einpressdrosseln throttle body 52, 58 and 80 is dependent on the selected flow cross-section of the throttle channel 34, be this as a hole in the bottom of the throttle element produced as a thermoforming element 52, this as a throttle opening 72 executed in the circumferential surface 64 of a cylinder-shaped throttle body 58 or as a constriction 82 in a hyperboloid designed as a throttle body 80, as in the FIGS. 4 or 4.1 shown in detail.

Landscapes

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

Claims (8)

  1. Dispositif d'injection de carburant pour un moteur à combustion interne, comprenant un espace d'accumulation haute pression (10) avec plusieurs alésages de raccordement (30) servant à l'évacuation du carburant hors de l'espace d'accumulation haute pression (10) ou à l'alimentation en carburant dans celui-ci, auxquels sont raccordées des conduites d'amenée haute pression (18) allant aux injecteurs de carburant ou à des conduites d'alimentation en carburant provenant d'une source de haute pression, au moins un élément d'étranglement (28, 58) étant associé au moins aux alésages de raccordement (30) des conduites d'amenée haute pression (18) allant aux injecteurs de carburant, lequel présente un canal d'étranglement (34) réalisé au moins à un étage et qui est pressé en tant qu'élément d'étranglement pressable dans une paroi (12) de l'espace d'accumulation haute pression (10) et est maintenu par engagement par force dans les alésages de raccordement (30) de l'espace d'accumulation haute pression (10) en au moins un point de contact (64), caractérisé en ce que l'au moins un élément d'étranglement (28, 58) est construit sous forme de composant préformé, présentant des propriétés élastiques, et est réalisé sous forme de cylindre à paroi mince, pourvu d'une fente longitudinale (60), et présente une surface d'enveloppe (64) qui est réalisée avec un rehaussement en forme de coupelle (76) avec une ouverture d'étranglement (72).
  2. Dispositif d'injection de carburant selon la revendication 1, caractérisé en ce que l'au moins un élément d'étranglement (28, 58) est fabriqué en un matériau réalisé par une technique de métallurgie des poudres ou est fabriqué en plastique.
  3. Dispositif d'injection de carburant selon la revendication 1, caractérisé en ce que l'au moins un élément d'étranglement (28, 58) sous forme cylindrique est enfoncé dans la direction axiale (66) dans une cavité (68) de l'espace d'accumulation haute pression (10) .
  4. Dispositif d'injection de carburant selon la revendication 1, caractérisé en ce que la position de montage de l'au moins un élément d'étranglement (28, 58) réalisé sous forme cylindrique dans la cavité (68) de l'espace d'accumulation haute pression (10) est définie par la coupelle (76) s'encliquetant dans l'alésage de raccordement (30) avec l'ouverture d'étranglement (72) dans la surface d'enveloppe (64).
  5. Dispositif d'injection de carburant pour un moteur à combustion interne comprenant un espace d'accumulation haute pression (10) avec plusieurs alésages de raccordement (30) servant à l'évacuation du carburant hors de l'espace d'accumulation haute pression (10) ou à l'alimentation en carburant dans celui-ci, auxquels sont raccordées des conduites d'amenée haute pression (18) allant aux injecteurs de carburant ou à des conduites d'alimentation en carburant provenant d'une source de haute pression, au moins un élément d'étranglement (28, 80) étant associé au moins aux alésages de raccordement (30) des conduites d'amenée haute pression (18) allant aux injecteurs de carburant, lequel présente un canal d'étranglement (34) réalisé au moins à un étage et qui est pressé en tant qu'élément d'étranglement pressable dans une paroi (12) de l'espace d'accumulation haute pression (10) et est maintenu par engagement par force dans les alésages de raccordement (30) de l'espace d'accumulation haute pression (10) en au moins un point de contact (84, 86), caractérisé en ce que l'au moins un élément d'étranglement (28, 80) est construit sous forme de composant préformé, présentant des propriétés élastiques, et est réalisé sous forme d'hyperboloïde et présente une surface d'enveloppe (64) qui présente un premier point de contact (84) sur une formation (36) de l'espace d'accumulation haute pression (10) servant de cône d'étanchéité, et un deuxième point de contact (86) sur l'alésage de raccordement (30) de l'espace d'accumulation haute pression (10).
  6. Dispositif d'injection de carburant selon la revendication 5, caractérisé en ce que l'élément d'étranglement (28, 80) est fabriqué sous forme d'hyperboloïde en matériau métallique ou en matériau plastique ayant des propriétés élastiques.
  7. Dispositif d'injection de carburant selon la revendication 5, caractérisé en ce que l'élément d'étranglement (28, 80) sous forme d'hyperboloïde présente entre une première ouverture (92) vers la pièce de raccordement (16) et une deuxième ouverture (94) vers la cavité (68) de l'espace d'accumulation haute pression (10), un point de rétrécissement (82) servant de canal d'étranglement (34).
  8. Dispositif d'injection de carburant selon la revendication 5, caractérisé en ce que l'élément d'étranglement (28, 80) sous forme d'hyperboloïde comprend sur son côté tourné vers la pièce de raccordement (16) une surface d'appui conique (56) et sur son côté tourné vers la cavité (68) de l'espace d'accumulation haute pression (10), au moins une fente axiale (88).
EP06754873A 2005-06-10 2006-04-27 Corps de chambre d'accumulation haute pression presentant des elements d'etranglement haute pression Expired - Fee Related EP1893867B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200510026993 DE102005026993A1 (de) 2005-06-10 2005-06-10 Hochdruckspeicherraumkörper mit Hochdruckdrosseln
PCT/EP2006/061862 WO2006131420A1 (fr) 2005-06-10 2006-04-27 Corps de chambre d'accumulation haute pression presentant des elements d'etranglement haute pression

Publications (2)

Publication Number Publication Date
EP1893867A1 EP1893867A1 (fr) 2008-03-05
EP1893867B1 true EP1893867B1 (fr) 2010-06-23

Family

ID=36645766

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06754873A Expired - Fee Related EP1893867B1 (fr) 2005-06-10 2006-04-27 Corps de chambre d'accumulation haute pression presentant des elements d'etranglement haute pression

Country Status (4)

Country Link
EP (1) EP1893867B1 (fr)
JP (1) JP2008542624A (fr)
DE (2) DE102005026993A1 (fr)
WO (1) WO2006131420A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2071174B1 (fr) * 2007-12-10 2011-03-23 Delphi Technologies Holding S.à.r.l. Gicleur pour l'amortissement d'un orifice
DE102008017228A1 (de) * 2008-04-04 2009-10-08 Continental Automotive Gmbh Fluidsystem
JP2014088791A (ja) * 2012-10-29 2014-05-15 Denso Corp 燃料噴射装置用コモンレール
DE102016209423A1 (de) * 2016-05-31 2017-11-30 Robert Bosch Gmbh Hochdruckspeicher und Verfahren zur Herstellung eines Hochdruckspeichers
CN111433450B (zh) * 2017-12-08 2022-01-28 沃尔沃卡车集团 用于共轨燃料喷射***的装置
CN112555077A (zh) * 2020-12-03 2021-03-26 一汽解放汽车有限公司 一种共轨管及柴油机高压供油***

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3503784B2 (ja) * 1995-10-13 2004-03-08 株式会社デンソー 蓄圧式燃料噴射装置
JPH10213045A (ja) * 1996-11-30 1998-08-11 Usui Internatl Ind Co Ltd コモンレールにおける分岐接続体の接続構造
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
GB2358898B (en) 1999-12-09 2002-04-24 Usui Kokusai Sangyo Kk Diesel engine fuel injection pipe
US6463909B2 (en) * 2000-01-25 2002-10-15 Usui Kokusai Sangyo Kaisha Limited Common rail
JP3806302B2 (ja) * 2000-01-25 2006-08-09 臼井国際産業株式会社 コモンレール
JP3558008B2 (ja) * 2000-06-08 2004-08-25 トヨタ自動車株式会社 燃料噴射装置
DE10212876A1 (de) * 2002-03-22 2003-10-23 Bosch Gmbh Robert Einrichtung zur Schwingungsdämpfung an Kraftstoffeinspritzsystemen mit Hochdrucksammelraum
EP1359318A1 (fr) * 2002-04-16 2003-11-05 Robert Bosch Gmbh Accumulateur de combustible à haute pression ayant des propriétés amortissantes améliorées
JP2004027964A (ja) * 2002-06-25 2004-01-29 Aisin Seiki Co Ltd 車両用の燃料供給装置
DE10344898A1 (de) * 2003-09-26 2005-04-21 Bosch Gmbh Robert Bauteil einer Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine und Kraftstoffeinspritzeinrichtung
DE202004019820U1 (de) 2004-12-23 2006-04-27 Robert Bosch Gmbh Kraftstoffeinspritzeinrichtung für einen Dieselmotor

Also Published As

Publication number Publication date
DE102005026993A1 (de) 2006-12-14
EP1893867A1 (fr) 2008-03-05
JP2008542624A (ja) 2008-11-27
DE502006007266D1 (de) 2010-08-05
WO2006131420A1 (fr) 2006-12-14

Similar Documents

Publication Publication Date Title
EP2188516B1 (fr) Dispositif d'injection de carburant
DE19607521C1 (de) Kraftstoff-Verteilerrohr
EP2812559B1 (fr) Injecteur de carburant et dispositif d'injection de carburant
EP2203639B1 (fr) Dispositif d'injection de carburant
EP2948675B1 (fr) Installation d'injection de carburant dotée d'un composant d'alimentation en carburant, d'un injecteur de carburant et d'une attache de suspension
EP2961977B1 (fr) Dispositif pour l'injection de carburant dans une chambre de combustion d'un moteur à combustion
EP1893867B1 (fr) Corps de chambre d'accumulation haute pression presentant des elements d'etranglement haute pression
DE102007001363A1 (de) Injektor zum Einspritzen von Kraftstoff in Brennräume von Brennkraftmaschinen
DE102008035492B4 (de) Railbaugruppe einer Kraftstoffeinspritzanlage
DE19937444C1 (de) Vorrichtung zur Verteilung von Kraftstoff für Kraftstoffeinspritzanlagen von Verbrennungsmotoren
EP1896720B1 (fr) Chambre d'accumulation haute pression a element d'etranglement et filtrant integre
EP1685323B1 (fr) Dispositif pour amortir des coups de belier
DE102015226528A1 (de) Brennstoffeinspritzventil
DE102020207472A1 (de) Komponente für eine Einspritzanlage und Einspritzanlage für gemischverdichtende, fremdgezündete Brennkraftmaschinen
WO2009156205A1 (fr) Corps d'appui, clapet antiretour et pompe à carburant à haute pression
DE102020208768A1 (de) Brennstoffverteilerleiste für eine Einspritzanlage und Einspritzanlage für gemischverdichtende, fremdgezündete Brennkraftmaschinen
WO2011079987A1 (fr) Injecteur pour fluide
DE102015219769A1 (de) Niederdruckdämpfer sowie Kraftstoffhochdruckpumpe
WO2008058799A1 (fr) Injecteur de carburant
WO2003081021A1 (fr) Dispositif d'amortissement des vibrations sur un systeme d'injection de carburant comportant un accumulateur haute pression
DE102005063545B4 (de) Hochdruckverschraubung mit Durchflussbegrenzungsanordnung
EP2896815A2 (fr) Installation d'injection de carburant dotée d'un composant destiné à guider le carburant, d'une soupape d'injection de carburant et d'un élément de liaison
DE10115856C1 (de) Hochdruck-Kraftstoffpumpe für eine direkteinspritzende Brennkraftmaschine, Kraftstoffsystem für eine direkteinspritzende Brennkraftmaschine, sowie direkteinspritzende Brennkraftmaschine
DE102008035462B4 (de) Railbaugruppe einer Kraftstoffeinspritzanlage
DE102008035489B4 (de) Railbaugruppe einer Kraftstoffeinspritzanlage

Legal Events

Date Code Title Description
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

17P Request for examination filed

Effective date: 20080110

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT

17Q First examination report despatched

Effective date: 20080403

RBV Designated contracting states (corrected)

Designated state(s): DE FR GB IT

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

REF Corresponds to:

Ref document number: 502006007266

Country of ref document: DE

Date of ref document: 20100805

Kind code of ref document: P

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20110324

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502006007266

Country of ref document: DE

Effective date: 20110323

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20110427

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110427

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20150424

Year of fee payment: 10

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160427

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 12

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20210624

Year of fee payment: 16

Ref country code: FR

Payment date: 20210421

Year of fee payment: 16

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502006007266

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220430

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221103