EP1563181B1 - Soupape d'injection de carburant pour moteurs combustion interne - Google Patents

Soupape d'injection de carburant pour moteurs combustion interne Download PDF

Info

Publication number
EP1563181B1
EP1563181B1 EP03795728A EP03795728A EP1563181B1 EP 1563181 B1 EP1563181 B1 EP 1563181B1 EP 03795728 A EP03795728 A EP 03795728A EP 03795728 A EP03795728 A EP 03795728A EP 1563181 B1 EP1563181 B1 EP 1563181B1
Authority
EP
European Patent Office
Prior art keywords
valve
sealing
fuel injection
conical face
face
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 - Lifetime
Application number
EP03795728A
Other languages
German (de)
English (en)
Other versions
EP1563181A1 (fr
Inventor
Thomas Kuegler
Hasiman ÜSKÜDAR
Jochen Mertens
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
Priority claimed from DE10315820A external-priority patent/DE10315820A1/de
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1563181A1 publication Critical patent/EP1563181A1/fr
Application granted granted Critical
Publication of EP1563181B1 publication Critical patent/EP1563181B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F02M61/1873—Valve seats or member ends having circumferential grooves or ridges, e.g. toroidal
    • 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
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
    • F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
    • F02M45/08—Injectors peculiar thereto
    • F02M45/086—Having more than one injection-valve controlling discharge orifices
    • 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
    • F02M2200/46—Valves, e.g. injectors, with concentric valve bodies

Definitions

  • the invention is based on a fuel injection valve for internal combustion engines, as is known for example from the published patent application DE 100 58 153 A1.
  • a fuel injection valve has a valve body in which a bore is formed, which is delimited at its combustion-chamber end by a valve seat.
  • a piston-shaped valve hollow needle is arranged, which has at its combustion chamber side, so the valve seat end facing a valve sealing surface, with which it cooperates with the valve seat.
  • at least one injection opening is opened and closed, which starts from the valve seat and opens into the installation position of the fuel injection valve in the combustion chamber of the internal combustion engine.
  • the fuel is usually kept in a pressure space which is formed between the valve needle and the wall of the bore.
  • a pressure space which is formed between the valve needle and the wall of the bore.
  • a high pressure so that a good atomization of the fuel is achieved, which is essential for an effective and low-emission combustion process.
  • the injection openings must be sealed so that no fuel can enter the combustion chamber uncontrolled, which leads to increased pollutant emissions.
  • so-called sudblasens in which from the Combustion chamber combustion gases penetrate through the injection openings in the injection valve and there change the state so that the subsequent injection process can not run optimally. It is then injected, for example, too little fuel, which is noticeable in a power loss.
  • the injection timing may shift, resulting in a troubled run and increased pollutant emissions of the internal combustion engine.
  • the document EP 520 659 A1 discloses an injection valve which has a hollow needle and an inner needle, wherein the hollow needle opens and closes outer injection openings by its longitudinal movement and the inner needle accordingly inner injection openings.
  • the hollow needle on two sealing surfaces, wherein the inner sealing surface is seated during the closing movement first on the conical valve seat and only then the outer.
  • the gaseous fuel is supplied to the outer injection openings through an annular channel which extends in the hollow needle and is bounded by the latter to the outside.
  • the document WO 03/040543 shows an injection valve with a hollow needle in which an inner needle is guided, wherein both needles each open and close at least one injection opening.
  • the outer needle has an inwardly projecting sealing lip, which is pressed by the inner needle in the closed position against the valve seat, so that a secure sealing of the outer injection openings is achieved both inwardly and outwardly.
  • the fuel injection valve according to the invention with the characterizing features of claim 1, in contrast, has the advantage that the injection openings are sealed in the injection breaks.
  • the valve hollow needle has two sealing regions on its valve sealing surface, wherein the first sealing region upstream and the second sealing region downstream of the at least one injection opening effects a seal between valve sealing surface and valve seat. Through both sealing areas of the entry of the injection openings is sealed, so that neither fuel can enter the combustion chamber uncontrolled, nor combustion gases can penetrate from the combustion chamber via the injection openings in the fuel injection valve.
  • the first sealing region is designed as a conical surface. This results in a flat support on the valve seat, which there reduces the surface pressure and thus the mechanical stress.
  • the second sealing area may be formed in this form.
  • the sealing areas can be formed by edges.
  • the first sealing region is formed at the transition of a first conical surface to a second conical surface, wherein the conical surfaces form part of the valve sealing surface.
  • the second sealing region can also be formed by an edge, preferably in that a third conical surface is provided on the valve sealing surface, between which and the second conical surface an annular groove is formed. At the transition of the annular groove to the third conical surface, which has a larger opening angle than the conical valve seat, then results in an edge which forms the second sealing area.
  • annular groove it can also be provided to form two further conical surfaces between two conical surfaces, which are inclined in such a way that an annular groove-like recess thereby forms, which covers the injection openings.
  • Such an embodiment is easier to manufacture than a rounded annular groove, since one and the same tool can be used for all conical surfaces.
  • the second sealing region which is arranged downstream of the first sealing region, rests against the first sealing region during the closing movement of the valve needle on the valve seat.
  • the downstream, combustion-chamber-side end of the hollow valve needle must elastically deform slightly inwards after the second sealing area has been placed on the valve sealing surface, which then makes it possible to place the first sealing area.
  • a groove through which an elastic sealing lip is formed may be provided downstream of the first sealing portion on the hollow valve needle, a groove through which an elastic sealing lip is formed.
  • the sealing lip of the second sealing region is formed, which is before the first Sealing area on the valve seat touches.
  • the sealing lip is slightly elastically deformable, which on the one hand ensures a good seal and on the other hand does not lead to excessive deformation or tension of the valve hollow needle.
  • FIG. 1 shows a longitudinal section of a fuel injection valve.
  • a bore 3 is formed, which is bounded at its combustion-chamber-side end by a conical valve seat 18. From the valve seat 18 go outside injection openings 20 and inner injection openings 22, which are arranged with respect to the longitudinal axis 7 of the bore 3 at different heights. It is generally provided to form a plurality of injection openings in each case over the circumference of the injection valve, wherein all outer injection openings 20 and all inner injection openings 22 with respect to the longitudinal axis 7 of the bore 3 at the same height are arranged so that two rows of injection openings are formed.
  • the injection openings 20, 22 open into the installation position of the fuel injection valve in the combustion chamber of the internal combustion engine.
  • a hollow valve needle 8 is arranged longitudinally displaceably, which is sealingly guided in a guide chamber of the bore 3 facing away from the combustion chamber.
  • the hollow valve needle 8 tapers the valve seat 18 to form a pressure shoulder 12 and merges at its combustion chamber side, the valve seat 18 end facing in a valve sealing surface 35 which is formed substantially conical and with the valve hollow needle 8 with the valve seat 18 interacts.
  • a pressure chamber 14 is formed, which is radially expanded in a region adjacent to the guide portion. In the radial extension of the pressure chamber 14 opens an extending in the valve body 1 inlet channel 16 through which the pressure chamber 14 can be filled with fuel under high pressure.
  • the valve hollow needle 18 has a longitudinal bore 11, which is formed concentrically to the longitudinal axis of the valve hollow needle 18 and extends over the entire length thereof.
  • a valve needle 10 is arranged longitudinally displaceable, which has a valve sealing surface 42 at its combustion chamber end, with which the valve needle 10 cooperates with the valve seat 18 for controlling the inner injection openings 22.
  • the valve needle 10 is guided in the longitudinal bore 11 near the valve seat 18 in a guide portion 27 which is formed by a slight thickening of the valve needle 10. Both the valve hollow needle 8 and the valve needle 10 are acted upon at its end remote from the combustion chamber by a closing force which points in the direction of the valve seat 18 and which is generated, for example, by a respective spring or by a hydraulic device.
  • FIG. 2 shows an enlargement of the section of FIG. 1 denoted by II.
  • the valve hollow needle 8 cooperates with the valve seat 18 in such a way that the outer injection openings 20 are closed when the hollow valve needle 8 abuts the valve seat 18.
  • the valve needle 10 closes when in contact with the valve seat 18, the inner injection openings 22nd
  • the function of the fuel injection valve is as follows: At the beginning of the injection cycle, both the valve hollow needle 8 with its valve sealing surface 35 and the valve needle 10 with its valve sealing surface 42 in contact with the valve seat 18. In the pressure chamber 14 there is already a high fuel pressure through which a hydraulic Opening force on the pressure shoulder 12 of the valve hollow needle 8 results. If the injection begins, the closing force is reduced to the valve hollow needle 8, so that now the hydraulic opening force exceeds the closing force. This results in a resultant force on the valve hollow needle 8, which moves away from the valve seat 18. The outer injection openings 20 are thus released and fuel can flow from the pressure space 14 between the valve sealing surface 35 and the valve seat 18 through to the outer injection openings 20 and is injected through them into the combustion chamber.
  • the valve needle 10 remains initially in its closed position, in which the inner injection openings 22 are closed. Since only a part of the injection openings 20, 22 is open so far, the fuel is injected at a relatively low rate, which is necessary for example for a pilot injection. After lifting the valve hollow needle 8 from the valve seat 18, the valve needle 10 is acted upon by the fuel pressure, so that there is also on the valve needle 10, a hydraulic opening force, which is opposite to the corresponding closing force. As soon as the opening force predominates, the valve needle also moves 10 away from the valve seat 18, whereby the inner injection openings 22 are released. Now, fuel is injected through all of the injection ports 20, 22 at a significantly higher rate, as required, for example, for the main injection.
  • the closing force on the valve hollow needle 8 always remains constant. In this case, the fuel pressure in the pressure chamber 14 is increased only before the beginning of the injection until the increasing fuel pressure by the hydraulic forces on the valve hollow needle 8 outweigh the closing force.
  • the valve needle 10 remains closed by a correspondingly large closing force and the valve hollow needle 8 slides back into its closed position after opening. Such an injection is required, for example, for a pre-injection or pilot injection separated in time by the main injection.
  • FIG. 3 shows an enlarged detail of the valve hollow needle 8 in the area of the valve sealing face 35, this cutout being designated III in FIG.
  • the valve sealing surface 35 has a first conical surface 30, a second conical surface 31 and a third conical surface 32, which are formed in this order in the downstream direction on the valve sealing surface 35.
  • the first conical surface 30 directly adjoins the second conical surface 31, so that an edge 34 is formed at the transition.
  • the opening angle a 1 of the first conical surface 30 is smaller than the opening angle a 2 of the second conical surface 31.
  • the opening angle a 3 of the third conical surface 32 is equal to that of the second conical surface 31, and both conical surfaces 31, 32 lie on a common, imaginary conical surface , Between the second conical surface 31 and the third conical surface 32, an annular groove 37 is formed, whose upstream edge 45 and downstream edge 46 upon contact of the valve sealing surface 35 on the valve seat 18 upstream or downstream of the outer injection openings 20 are.
  • the valve seat 18 is likewise conical and has an opening angle b which is equal to the opening angle a 2 of the second conical surface 31 and the opening angle a 3 of the third conical surface 32.
  • FIG. 4 shows the same view as FIG. 3 of a further exemplary embodiment.
  • the second conical surface 31 here has an opening angle a 2 which is greater than the opening angle b of the conical valve seat 18.
  • the edge 34 which is arranged at the transition of the first conical surface 30 to the second conical surface 31, formed as a sealing edge and forms the first sealing region.
  • the third conical surface 32 is unchanged from the embodiment shown in FIG.
  • edge 34 and the third conical surface 32 are arranged with respect to the valve seat 18, that in the new state of the fuel injection valve, the edge 34 first abuts the valve seat 18, while the third conical surface 32 is still spaced from the valve seat 18, but only by a very thin gap, resulting in a sufficient, but not complete seal.
  • the edge 34 hammers something in the valve seat 18 until the third conical surface 32 in the closed position of the valve hollow needle 8 on the valve seat 18 rests, so that then a seal is given to both sealing areas at high surface pressure and thus good seal in the first sealing area, which seals against the high pressure of the pressure chamber.
  • the two sealing areas are aligned so that the valve hollow needle 8 first with the second sealing area, so the third cone surface 32, touches on the valve seat 18.
  • the hollow valve needle is somewhat elastically deformed inwards in the region of the third conical surface 32, to the extent that the edge 34 is seated on the valve seat 18.
  • a corresponding seal also results upstream and downstream of the outer injection openings 20.
  • FIG. 5 shows a further exemplary embodiment in the same representation as FIG. 3.
  • both the opening angle a 2 of the second conical surface 31 and the opening angle a 3 of the third conical surface 32 are greater than the opening angle b of the conical valve seat 18.
  • the downstream edge 46 of the annular groove 37 here forms the second sealing region, which is formed with respect to the first sealing region, ie the edge 34, such that either the first or the second sealing region first rests on the valve seat 18. If the first sealing area, ie the edge 34, first comes to rest, the complete sealing at the second sealing area only takes place during operation, in which the edge 34 strikes somewhat into the valve seat 18 until the downstream edge 46 of the annular groove 37 rests on the valve seat 18 rests.
  • the first sealing region seals, as in the embodiment shown in FIG. 4 and described above, when the valve hollow needle 18 is elastically deformed inwards at its tip.
  • FIG. 6 shows a further exemplary embodiment in the same illustration as FIG. 5.
  • the opening angle a1 of the first conical surface 30 is smaller than the opening angle b of the conical valve seat 18, so that an upstream edge 45 is formed at the transition of the first conical surface 30 to the annular groove 37. which forms the first sealing area.
  • the downstream edge 46 of the annular groove 37 is designed as a second sealing region, to which a convex end portion 39 connects.
  • the interaction of upstream edge 45 and downstream edge 46 of the annular groove 37 is analogous to the embodiment of Figure 5. Thus, it can be provided both that the upstream edge 45 abuts the valve seat 18 in front of the downstream edge 46 and vice versa.
  • the valve needle 8 has, in addition to the first conical surface 30 and the third conical surface 32, which are arranged identically to the conical surfaces in FIG. 5, instead of an annular groove, an upper conical surface 31 a and a lower conical surface 31 b.
  • the first sealing region is in the form of an upstream edge 45 and correspondingly at the transition of the lower conical surface 31b to the third conical surface 32 a downstream edge 46, which forms the second sealing region.
  • the advantage of this arrangement is the good manufacturability, since all conical surfaces can be ground to the valve needle 8 with the same tools.
  • the sealing functions at the first and second sealing regions are analogous to the exemplary embodiment shown in FIG.
  • valve hollow needle 8 The sealing at both sealing areas by elastic deformation of the valve hollow needle 8 is also the principle in the embodiment shown in Figure 8, in which the identical parts of the hollow valve needle with the same reference numerals as in Figures 3, 4 and 5 are designated.
  • a groove 50 is provided, through which a sealing lip 52 is formed.
  • a sealing edge 48 is provided which forms the second sealing area.
  • the sealing lip 52 is formed relatively thin, so that a good elastic deformability is given.
  • the sealing principle is, as already described above, given by the fact that during the closing movement of the valve hollow needle 8 first the sealing edge 48 touches the conical valve seat 18.
  • the sealing lip 52 is elastically deformed inwardly until the edge 34, which is formed analogously to the embodiment shown in Figure 5 between the first cone surface 30 and the second cone surface 31, on the valve seat 18th touches down.

Claims (15)

  1. Injecteur de carburant pour moteurs à combustion interne, comprenant un corps de soupape (1) avec un alésage (3) qui, à son extrémité côté chambre de combustion, est délimité par un siège de soupape (18) ayant au moins un orifice d'injection (20), et une aiguille de soupape creuse (8) mobile longitudinalement dans l'alésage (3) et dont l'extrémité tournée vers le siège de soupape (18) a une surface d'étanchéité de soupape (35),
    une première zone d'étanchéité (31 ; 34) et une deuxième zone d'étanchéité (32 ; 46 ; 48) étant formées au niveau de la surface d'étanchéité de soupape (35), et l'aiguille de soupape creuse (8) coopérant avec le siège de soupape (18) de manière à ce que lors de l'appui de l'aiguille de soupape creuse (8) sur le siège de soupape (18) une étanchéité entre la surface d'étanchéité (35) et le siège de soupape (18) soit assurée en amont par la première zone d'étanchéité (31 ; 34) et en aval par la deuxième zone d'étanchéité (32 ; 46 ; 48) d'au moins un orifice d'injection (20),
    la deuxième zone d'étanchéité (32 ; 46 ; 48) s'appliquant avant la première zone d'étanchéité (31 ; 34) sur le siège de soupape (18) lors du mouvement de l'aiguille de soupape creuse (8) en direction du siège de soupape (18),
    caractérisé en ce qu'
    une aiguille de soupape (10) qui commande l'ouverture d'au moins un autre orifice d'injection (22) partant du siège de soupape (18) est logée pour se déplacer longitudinalement dans l'aiguille de soupape creuse (8), l'aiguille de soupape creuse (8) pouvant être éloignée du siège de soupape (18) tandis que l'aiguille de soupape (10) reste dans sa position de fermeture, et une chambre de pression (14) formée entre l'aiguille de soupape creuse (8) et la paroi de l'alésage (3) permet au carburant de s'écouler vers au moins un orifice d'injection (20) après le soulèvement de l'aiguille de soupape creuse (8) du siège de soupape (18).
  2. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    la première zone d'étanchéité (31 ; 34) se présente sous la forme d'une surface conique (31) qui, lors de l'appui de l'aiguille de soupape creuse (8) sur le siège de soupape (18), repose à plat sur celui-ci.
  3. Injecteur de carburant selon la revendication 1 ou 2,
    caractérisé en ce qu'
    en aval de la surface conique (31) un creux (50) est prévu sur l'aiguille de soupape creuse (8) pour former une lèvre d'étanchéité (52) sur laquelle est formée la deuxième zone d'étanchéité (48), la lèvre d'étanchéité (52) étant déformable élastiquement vers l'intérieur.
  4. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    la deuxième zone d'étanchéité (31 ; 34) se présente sous la forme d'une surface conique (32) qui, lors de l'appui de l'aiguille de soupape creuse (8) sur le siège de soupape (18), repose à plat sur celui-ci.
  5. Injecteur de carburant selon la revendication 1,
    caractérisé en ce qu'
    une rainure annulaire périphérique (37) à la surface d'étanchéité de soupape (35) est formée entre la première zone d'étanchéité (31 ; 34) et la deuxième zone d'étanchéité (32 ; 46).
  6. Injecteur de carburant selon la revendication 5,
    caractérisé en ce que
    la rainure annulaire (37) recouvre au moins un orifice d'injection (20).
  7. Injecteur de carburant selon la revendication 6,
    caractérisé en ce que
    la première zone d'étanchéité (45) est formée par l'arête amont (45) de la rainure annulaire (37) qui forme la ligne limite entre une première surface conique (30) et la rainure annulaire (37).
  8. Injecteur de carburant selon la revendication 6,
    caractérisé en ce que
    la deuxième zone d'étanchéité (32 ; 46 ; 48) est formée par une arête (46) formée au niveau du passage de la rainure annulaire (37) vers la partie de la surface d'étanchéité de soupape (35) située en aval de la rainure annulaire (37).
  9. Injecteur de carburant selon la revendication 8,
    caractérisé en ce que
    la partie de la surface d'étanchéité de soupape (35) située en aval de la rainure annulaire (37) se présente sous la forme d'un segment terminal convexe (39).
  10. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    la surface d'étanchéité de soupape (35) comprend une première surface conique (30), une deuxième surface conique (31) disposée en aval de la première surface conique (30) et une troisième surface conique (32) disposée en aval de la deuxième surface conique (31).
  11. Injecteur de carburant selon la revendication 10,
    caractérisé en ce que
    la première surface conique (30) présente un angle d'ouverture plus petit que la deuxième surface conique (31), de sorte qu'au niveau de la ligne limite entre les surfaces coniques (30 ; 31) la première zone d'étanchéité se présente sous la forme d'une arête périphérique (34).
  12. Injecteur de carburant selon la revendication 10,
    caractérisé en ce que
    la troisième surface conique (32) présente un angle d'ouverture plus grand que le siège de soupape conique (18).
  13. Injecteur de carburant selon la revendication 10,
    caractérisé en ce qu'
    une rainure annulaire (37) qui recouvre les orifices d'injection (20) est formée entre la deuxième surface conique (31) et la troisième surface conique (32).
  14. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    la surface d'étanchéité de soupape (35) comprend une première surface conique (30), une surface conique supérieure (31a) disposée en aval de la première surface conique (30), une surface conique inférieure (31b) disposée en aval et une troisième surface conique (32) disposée en aval, la première zone d'étanchéité étant formée par l'arête (45) entre la première surface conique (30) et la surface conique supérieure (31a) et la deuxième zone d'étanchéité entre la surface conique inférieure (31b) et la troisième surface conique (32).
  15. Moteur à combustion interne comprenant au moins une chambre de combustion et au moins un injecteur de carburant permettant d'injecter du carburant dans la chambre de combustion,
    caractérisé en ce que
    l'injecteur de carburant est configuré selon l'une quelconque des revendications 1 à 14.
EP03795728A 2002-11-11 2003-10-27 Soupape d'injection de carburant pour moteurs combustion interne Expired - Lifetime EP1563181B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE10252660 2002-11-11
DE10252660 2002-11-11
DE10315820 2003-04-07
DE10315820A DE10315820A1 (de) 2002-11-11 2003-04-07 Kraftstoffeinspritzventil für Brennkraftmaschinen
PCT/DE2003/003561 WO2004044414A1 (fr) 2002-11-11 2003-10-27 Soupape d'injection de carburant pour moteurs à combustion interne

Publications (2)

Publication Number Publication Date
EP1563181A1 EP1563181A1 (fr) 2005-08-17
EP1563181B1 true EP1563181B1 (fr) 2006-10-04

Family

ID=32313556

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03795728A Expired - Lifetime EP1563181B1 (fr) 2002-11-11 2003-10-27 Soupape d'injection de carburant pour moteurs combustion interne

Country Status (5)

Country Link
US (1) US7331537B2 (fr)
EP (1) EP1563181B1 (fr)
JP (1) JP2006505745A (fr)
DE (1) DE50305296D1 (fr)
WO (1) WO2004044414A1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10245573A1 (de) * 2002-09-27 2004-04-08 Robert Bosch Gmbh Kraftstoffeinspritzventil für Brennkraftmaschinen
EP1654395B1 (fr) * 2003-08-11 2010-07-14 Honeywell International Inc. Constructions de plaque cible et de contreplaque et procede de fabrication de ces constructions de plaque cible et de contreplaque
DE102005025135A1 (de) * 2005-06-01 2006-12-07 Robert Bosch Gmbh Kraftstoffeinspritzventil für Brennkraftmaschinen
DE602005005981T2 (de) * 2005-07-13 2009-05-20 Delphi Technologies, Inc., Troy Einspritzdüse
DE112006002264T5 (de) * 2005-08-25 2008-06-26 Caterpillar Inc., Peoria Brennstoffeinspritzvorrichtung mit Rückschlagglied mit Nut
DE102005042200A1 (de) * 2005-09-06 2007-03-08 Robert Bosch Gmbh Kraftstoffinjektoren oder Einspritzdüsen für selbstzündende Verbrennungskraftmaschinen
DE102006052817A1 (de) * 2006-11-09 2008-05-15 Robert Bosch Gmbh Brennstoffeinspritzventil
DE102007062701A1 (de) * 2007-12-27 2009-07-02 Robert Bosch Gmbh Kraftstoffeinspritzdüse
JP2010053796A (ja) * 2008-08-29 2010-03-11 Hitachi Ltd 燃料噴射弁
DE102009042155A1 (de) * 2009-09-21 2011-04-07 Continental Automotive Gmbh Kraftstoff-Einspritzventil für eine Brennkraftmaschine
US20140175192A1 (en) * 2012-12-21 2014-06-26 Quantlogic Corporation Mixed-mode fuel injector with a variable orifice
EP3122468B1 (fr) * 2014-03-28 2022-06-22 Deyang Hou Injecteur de carburant souple pour injection de carburant simple et double
CN103994004A (zh) * 2014-05-16 2014-08-20 江苏大学 可移动压力室式喷油嘴
JP6354519B2 (ja) * 2014-10-23 2018-07-11 株式会社デンソー 燃料噴射弁
US11815055B1 (en) * 2022-12-01 2023-11-14 Caterpillar Inc. Multi-fuel injector and method

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1834061A (en) * 1930-04-30 1931-12-01 Westinghouse Electric & Mfg Co Fuel nozzle
FR2328855A1 (fr) 1975-10-21 1977-05-20 Lucas Industries Ltd Injecteur de carburant liquide pour moteur
DE2710138A1 (de) * 1977-03-09 1978-09-14 Maschf Augsburg Nuernberg Ag Mehrloch-einspritzduese
DE2710216A1 (de) * 1977-03-09 1978-09-14 Bosch Gmbh Robert Kraftstoffeinspritzduese
DE4023223A1 (de) * 1990-07-21 1992-01-23 Bosch Gmbh Robert Kraftstoff-einspritzduese fuer brennkraftmaschinen
FI88333C (fi) * 1991-06-25 1993-04-26 Waertsilae Diesel Int Foerbaettrat insprutningsventilarrangemang foer braensle
GB9709678D0 (en) * 1997-05-14 1997-07-02 Lucas Ind Plc Fuel injector
US5899389A (en) * 1997-06-02 1999-05-04 Cummins Engine Company, Inc. Two stage fuel injector nozzle assembly
AT2164U3 (de) 1997-08-07 1999-02-25 Avl List Gmbh Einspritzdüse für eine direkt einspritzende brennkraftmaschine
GB9914644D0 (en) 1999-06-24 1999-08-25 Lucas Ind Plc Fuel injector
GB9916464D0 (en) * 1999-07-14 1999-09-15 Lucas Ind Plc Fuel injector
EP2003323B1 (fr) * 1999-10-06 2010-06-30 Delphi Technologies Holding S.à.r.l. Injecteur de carburant
IT1319988B1 (it) 2000-03-21 2003-11-12 Fiat Ricerche Spina di chiusura di un ugello in un iniettore di combustibile permotori a combustione interna.
DE10031264A1 (de) * 2000-06-27 2002-01-17 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen
DE10058153A1 (de) 2000-11-22 2002-06-06 Bosch Gmbh Robert Einspritzdüse mit separat steuerbaren Düsennadeln
JP2002322969A (ja) * 2001-04-26 2002-11-08 Toyota Motor Corp 燃料噴射装置
DE10141679A1 (de) * 2001-08-25 2003-03-06 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine
DE10155227A1 (de) 2001-11-09 2003-05-22 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen
JP3882680B2 (ja) * 2001-11-16 2007-02-21 株式会社デンソー 燃料噴射ノズル
US6769635B2 (en) * 2002-09-25 2004-08-03 Caterpillar Inc Mixed mode fuel injector with individually moveable needle valve members

Also Published As

Publication number Publication date
WO2004044414A1 (fr) 2004-05-27
DE50305296D1 (de) 2006-11-16
US7331537B2 (en) 2008-02-19
US20060011749A1 (en) 2006-01-19
EP1563181A1 (fr) 2005-08-17
JP2006505745A (ja) 2006-02-16

Similar Documents

Publication Publication Date Title
DE10315820A1 (de) Kraftstoffeinspritzventil für Brennkraftmaschinen
EP1563181B1 (fr) Soupape d'injection de carburant pour moteurs combustion interne
EP0980474B1 (fr) Injecteur de carburant pour moteurs a combustion interne a auto-allumage
EP1446571B1 (fr) Soupape d'injection de carburant pour des moteurs a combustion interne
EP0978649B1 (fr) Buse d'injection de combustible
EP1552135B1 (fr) Dispositif d'injection de carburant destine a un moteur a combustion interne
EP1321661B1 (fr) Soupape d'injection de combustible pour moteurs à combustion interne
EP1373715B1 (fr) Soupape d'injection de carburant pour moteurs a combustion interne
EP1556607B1 (fr) Injecteurs de carburant pour moteurs a combustion interne
EP1627147B1 (fr) Soupape d'injection de carburant pour moteurs a combustion interne
WO2003098031A1 (fr) Soupape d'injection de carburant pour moteurs a combustion interne
EP1518049B1 (fr) Soupape d'injection de carburant pour moteurs a combustion interne
EP1433951A1 (fr) Injecteur de carburant de moteur à combustion interne
EP1608866B1 (fr) Soupape d'injection de carburant de moteurs a combustion interne
EP1422418B1 (fr) Injecteur de combustible pour moteurs à combustion interne
WO2004057180A1 (fr) Soupape d'injection de carburant pour moteurs a combustion interne
DE10318989A1 (de) Kraftstoffeinspritzventil für Brennkraftmaschinen
WO2004074676A1 (fr) Soupape d'injection de carburant destinee a des moteurs a combustion interne
EP1815129A1 (fr) Injecteur de carburant
DE10213384A1 (de) Kraftstoffeinspritzventil für Brennkraftmaschinen
DE10312584A1 (de) Kraftstoffeinspritzventil für Brennkraftmaschinen

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: 20050613

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

DAX Request for extension of the european patent (deleted)
RBV Designated contracting states (corrected)

Designated state(s): DE FR IT

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 IT

REF Corresponds to:

Ref document number: 50305296

Country of ref document: DE

Date of ref document: 20061116

Kind code of ref document: P

ET Fr: translation filed
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: 20070705

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

Ref country code: FR

Payment date: 20091110

Year of fee payment: 7

Ref country code: IT

Payment date: 20091023

Year of fee payment: 7

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: 20101102

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20110630

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: 20101027

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

Ref country code: DE

Payment date: 20141208

Year of fee payment: 12

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50305296

Country of ref document: DE

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

Ref country code: DE

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

Effective date: 20160503