WO2004016937A1 - Injecteur de carburant comprenant une zone de raccordement resistant a haute pression - Google Patents

Injecteur de carburant comprenant une zone de raccordement resistant a haute pression Download PDF

Info

Publication number
WO2004016937A1
WO2004016937A1 PCT/DE2003/000882 DE0300882W WO2004016937A1 WO 2004016937 A1 WO2004016937 A1 WO 2004016937A1 DE 0300882 W DE0300882 W DE 0300882W WO 2004016937 A1 WO2004016937 A1 WO 2004016937A1
Authority
WO
WIPO (PCT)
Prior art keywords
injector body
bore
section
inlet bore
fuel injector
Prior art date
Application number
PCT/DE2003/000882
Other languages
German (de)
English (en)
Inventor
Siegfried Ruthardt
Juergen Hanneke
Eike Kobes
Kasim-Melih Hamutcu
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
Priority to JP2004528284A priority Critical patent/JP4340231B2/ja
Priority to DE50313269T priority patent/DE50313269D1/de
Priority to EP03724837A priority patent/EP1527272B1/fr
Publication of WO2004016937A1 publication Critical patent/WO2004016937A1/fr

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
    • F02M55/008—Arrangement of fuel passages inside of 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
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • 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
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
    • 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
    • F02M2200/03—Fuel-injection apparatus having means for reducing or avoiding stress, e.g. the stress caused by mechanical force, by fluid pressure or by temperature variations

Definitions

  • Fuel injectors that are supplied via a high-pressure storage space are used today on self-igniting nerbrennkraftkraftmaschinen.
  • Fuel injection systems with a high-pressure storage space advantageously make it possible to adapt the injection and its course to the load and speed of the self-igniting internal combustion engine.
  • high-pressure strength of the injector bodies of the fuel injectors used in order to safely master the high operating pressures that occur. With subsequent generations of fuel injectors, it is to be expected that their injector bodies will be exposed to a further increasing operating pressure.
  • DE 196 50 865 AI relates to a fuel injector which can be actuated by means of a solenoid valve.
  • the fuel injector according to this solution comprises a high-pressure connection opening laterally into the injector body, via which a pressure bore running in the longitudinal direction in the injector body is supplied with fuel under high pressure from the high-pressure storage space. Via the drain hole running in the injector body, the fuel quantity to be injected is fed to the injection openings and injected into the combustion chamber of the self-igniting ner internal combustion engine.
  • An inlet bore extends from the connection area arranged laterally on the injector body and, in addition to the already mentioned pressure bore running longitudinally through the injector body, supplies an annular space with fuel under high pressure, which encloses a valve piece.
  • An inlet throttle is formed in the wall of the valve piece, for which fuel which is under high pressure as a control volume is supplied to a control chamber delimited by the valve piece and the injection valve member. leads.
  • the inlet bore for the annular space which runs obliquely through the injector body, opens into the annular space at an entry angle and forms an intersection area with the wall surface of the annular space, which represents a potential weak point with regard to the pressure resistance of the injector body of the fuel injector known from DE 196 50 865 AI.
  • EP 0 916 842 AI also relates to a fuel injector for supplying fuel to the combustion chambers of a self-igniting combustion engine.
  • a high-pressure connection is received, via which a pressure bore supplying a nozzle chamber with fuel under high pressure and an annular space surrounding a valve piece are supplied with fuel under high pressure.
  • a first bore branches off at the end face of the bore, which receives the high-pressure connection, to the annular space at a first angle with respect to the axis of symmetry of the fuel injector and a second bore at a second angle, based on the axis of symmetry of the fuel injector.
  • the injector body of the fuel injector can be kept relatively slim in accordance with EP 0 916 842 AI, but there is an intersection area on the front side of the high-pressure connection, since there two holes open directly next to one another, which represents a weak point with regard to the strength to be achieved; there is also an intersection area in the area of the mouth, which acts on the annular space with fuel under high pressure to supply the control space via an inlet throttle element, which represents a weak point of this injector with regard to the amount of pressure applied.
  • a high-pressure fuel reservoir for a fuel injection system for internal combustion engines is supplied with fuel by a high-pressure fuel pump.
  • the high-pressure fuel accumulator comprises an elongated tubular body made of steel, which is provided with connections for the fuel supply and the fuel discharge.
  • the connections for the fuel supply and the fuel discharge are designed as connecting pieces, from each of which a connecting bore opens eccentrically to the axis of the tubular body in the latter.
  • DE 199 37 946 Cl also relates to a high-pressure fuel accumulator for a fuel injection system for juice extractors.
  • a plurality of connecting pieces are provided on the high-pressure fuel accumulator, a plurality of connecting bores running between the cavity of the high-pressure fuel accumulator and one connecting piece in each case.
  • the connecting bores open tangentially into the Cavity of the fuel high-pressure accumulator, wherein the 'opening tangentially into the cavity of the fuel high-pressure accumulator Vietnamesesbobronne have a larger diameter than not tangentially opens into the storage space Verbmdungsbohronne.
  • the compressive strength of the injector body of a fuel injector can be increased considerably without additional sealing elements being required. This is achieved by reducing the angle between the nozzle supply bore running in the injector body and its inlet section. This measure results in a reduction in tension in the transition area (knee area) from the inlet section into the nozzle supply bore inside the injector body.
  • the inlet bore section which is made in the side pressure pipe socket at an optimized knee angle, can be sealed by the high pressure connection screwed into the pressure pipe socket.
  • the pressure resistance of the injector body can be further increased by designing the transition area between the inlet bore section and the nozzle supply bore as far away from the valve chamber as possible, but with a minimum distance from the peripheral surface of the injector body.
  • the risk of breakage of the injector body when an increased operating pressure level is applied can also be reduced by the fact that the injector body experiences as little material removal as possible at its high-pressure connection. drawing
  • FIG. 1 shows the high-pressure connection area on an injector body with a bore pattern according to the prior art
  • FIG. 2 shows the top view of a slightly rotated injector body designed according to the invention
  • Figure 3 is a plan view of the injector body according to the invention.
  • FIG. 1 shows the high-pressure connection area on an injector body with a bore pattern according to the prior art.
  • a fuel injector 1 comprises an injector body 2, which has a central bore 3 in its lower region.
  • an assembly space 4 is formed, in which a solenoid valve assembly, not shown in FIG. 1, is actuated, which actuates a valve member, which is also not shown in FIG. 1 for reasons of clarity.
  • a nozzle 6 is formed on the side, which has a connection area 5, in which a connection line can be received by a high-pressure accumulator (common rail), not shown in connection with FIG.
  • the connection area 5 is preferably designed as a connection thread.
  • An end face 7 is provided in the connecting piece 6, which is formed on the side of the injector body 2.
  • the end face 7 terminates with a chamfer 8 and is acted upon by the fuel, which is under very high pressure and is required via the high-pressure connection in the injector body 2.
  • An inlet bore section 9.1 branches off from the end face 7 in the connecting piece 6.
  • the inlet bore section 9.1 merges into a bore section 13 which compares with the.
  • Diameter of the inlet bore section 9.1 is formed with a smaller diameter.
  • the inlet bore section 9.1 and the bore section 13 are accommodated coaxially with one another and are embodied at a first inclination angle 11 with respect to the axis 19 of the injector body 2.
  • the angle of inclination designated by reference number 11 is 36.5 °, which results in a first knee angle of 143.5 ° with respect to the axis 19 of the injector body 2.
  • the operating pressure level to which the injector body 2 of the fuel injector 1 can be exposed as shown in FIG. 1 is thus limited to a pressure level of approximately 1350 bar.
  • a valve chamber 14 is formed in the injector body 2 to the side of the transition region 20 between the inlet bore section 9.1, the bore section 13 with a reduced diameter and the nozzle supply bore 9 which extends perpendicularly through the injector body 2.
  • a valve member is movably arranged (not shown here) within the valve space 14, which can be actuated by an actuator, also not shown, to be arranged within the assembly space 4, such as, for example, a solenoid valve assembly.
  • the inner wall 17 of the valve chamber 14 within the injector body 2 comprises a symmetrically designed annular groove 18.
  • the annular groove 18 lies approximately centrally within the valve chamber 14 delimited by the inner wall 17.
  • an external thread 16 is provided on the upper area of the injector body 2, with which the actuator is fixed within the assembly space 4. Furthermore the injector body 2 is traversed by an almost perpendicular bore 15 which serves to control the leakage oil.
  • FIG. II-II A section through an injector body configured in accordance with the invention can be seen in FIG. II-II, the section course II-II being shown in FIG.
  • the inlet bore section 9.1 penetrates the connection area 5 of the connector 6.
  • the end face 7 of the connector 6 branches off an inlet bore 22 to the valve chamber 14, which is arranged inclined by an angle 23 with respect to the axis 19 of the injector body 2, which is preferably chosen to be greater than 70 °.
  • the inlet bore 22, which extends from the end face 7, opens into the annular groove 18 formed in the wall 17 of the valve chamber 14.
  • the opening point of the inlet bore 22 to the valve chamber 14 is identified by reference numeral 24.
  • the inlet bore section 9.1 which is shown in broken lines in the sectional view II-II, takes a course marked with reference number 25 in the injector body 2.
  • the inlet bore section 9.1 penetrates the wall of the connecting piece 6 at a first point 26, extends through the connection region 5, which is preferably formed as a thread, and through the end face 7 of the nozzle 6.
  • the inlet bore section 9.1 merges into a bore section 13 which, analogous to the embodiment variant shown in FIG. 1 and known from the prior art, has a reduced diameter.
  • the inlet bore section 9.1 or the adjoining bore section 13 merges into the nozzle supply bore / throttle bore 9 formed vertically — shown here in broken lines — in the injector body 2.
  • connection area 5 provided as an internal thread does not extend completely to the end face 7 on the inside of the connector 6;
  • An annular chamfer 8 is attached between the front compartment 7 and the connection area 5, which can preferably be embodied as an internal thread.
  • the transition region 20 shown in the section II-Ü between the inlet bore section 9.1, the bore section 13 and the nozzle supply bore throttle bore 9 likewise comprises an intersection point 12, which, however, has a much more favorable stress profile due to its geometry, as will be described further below.
  • the bore 15, which serves for the return of leakage oil is covered by the material of the injector body 2.
  • the bore 15 runs along the mounting space 4, which is within the Injector body 2 is formed, below an external thread 16 in the upper region of the injector body 2.
  • FIG. 2 shows the top view of a slightly rotated injector body designed according to the invention.
  • connection area 5 is formed, which is preferably designed as an internal thread.
  • first point 26 of the inlet bore section 9.1 (see section II-II), which extends through the connection area 5 and the end face 7 in the nozzle 6.
  • the Zulauiboj tion section 9.1 merges into a bore section 13, which is formed in a reduced diameter compared to the inlet bore section 9.1.
  • the intersection point in the transition region 20 (not shown here) is identified by reference number 12. From the plan view according to FIG.
  • the inlet bore 22 branching from the end face 7 in the connection piece 6 for supplying the valve space 24 with fuel under high pressure runs at an angular offset 28 to the axis 19 of the injector body 2.
  • the horizontal angle replacement of the inlet bore 22 designated by reference numeral 28 in the plan view according to FIG. 2 is of the order of magnitude of approximately 10 °, depending on the selected diameter of the valve chamber 14 or the symmetrical annular groove 18 formed therein.
  • the section III-III shows the transition area of the inlet bore section or the bore section into the nozzle supply bore / throttle bore running perpendicularly in the injector body.
  • the inlet bore section 9.1 which passes over a bore section 13 of reduced diameter, is embodied at an optimized angle of inclination 30 with respect to the axis 19 of the injector body 2.
  • the according to the invention optimized tilt angle 30 ensures a steep as possible History • the inflow bore section 9.1 and of itself reduced adjoining the bore portion 13 the diameter with respect to the injector body 2 by pulling parallel to the central bore 3 Düsenleanedsbohrang / Drosselbobrung 9.
  • the optical Mated inclination angle 30 is in a range between 15 ° and 25 °.
  • the optimized angle of inclination 30 is in the range between 24 ° and 23 °.
  • the inlet boring section 9.1 runs out at a first point 26 on the outside of the nozzle 6; furthermore, the inlet bore section 9.1 passes through the connecting piece 6 on the inside in the region of the connection region 5, furthermore on the end face 7.
  • the one running steeply in the injector body 2 by the optimized angle of inclination 30 9.1 merges into a bore section 13 of reduced diameter, which in turn opens into the nozzle supply bore / throttle bore 9 in the transition region 20 (knee region).
  • an optimized bend angle 29 is obtained, which results in a transition region 20 that is almost free of intersections, compared to the intersection point 12 within the transition region 20 (knee region) shown in FIG.
  • a comparison of the transition area 20 according to FIG. 1 with the transition area 20 according to the embodiment variant of the injector body 2 according to the invention shown in section IH-III shows that the kriiewinkel 10 according to FIG. 1 has been enlarged to an optimized km angle 29 by the embodiment variant according to the invention.
  • An increase in the knee angle from, for example, 143.5 ° to 157 ° leads to a reduction in the comparison stress within the transition region 20 (knee region).
  • a further reduction in voltage within the transition region 20 of the smaller diameter bore section 13 into the nozzle supply bore / throttle bore 9 can be achieved by rounding the mouth edge of the bore portion 13 into the nozzle supply bore / throttle bore 9.
  • transition area 20 By avoiding a sharp-edged bore transition in the transition area 20 (intersection area), the stress level occurring there can be further reduced.
  • the rounding within the transition area 20 can be carried out by various manufacturing processes and can be carried out in the construction or design of the injector body 2 while maintaining its outer wall thickness 32.
  • transition region 20 (knee region) as far as possible from the wall 17 of the valve chamber 14 within the injector body 2. While maintaining a required minimum wall thickness 32 of the material of the injector body 2, an enlarged distance between the transition region 20 (knee region) and the wall 17 of the valve chamber 14 is identified by reference numeral 31 in section 111-111.
  • the distance identified by reference numeral 31, which characterizes the distance of the valve chamber 14 from the transition region 20 of the bores 9 and 13, is greater than the first distance 21 of the valve chamber 14 from the knee region 20, since the angle of the inlet bore section 9.1 according to the section line HI-III is considerably steeper than that of the inlet bore section 9.1, which is shown in the illustration in FIG. 1.
  • the outer wall thickness 32 on the injector body 2 can thus be kept larger.
  • the distance 31 between the valve space 14 and the transition area 20 (knee area) of approximately 1.5 to 1.8 results according to the section profile according to IH-III mm, while this distance designated by reference number 21 in FIG. 1 is only 1.2 to 1.3 mm.
  • the inner wall 17 of the valve chamber 14 is provided with a symmetrical annular groove 18, into which the inlet bore 22 (not shown here) opens at an outlet point 24 (also not shown here).
  • valve chamber 14 merges into the central bore 3, which runs vertically in the injector body 2 and which, for example, receives an injection valve member designed as a nozzle needle and extending to the nozzle chamber.
  • the nozzle supply bore / throttle bore 9 acts on the nozzle space surrounding the injection valve member but not shown here with fuel under high pressure.
  • the mounting space 4 in the upper region of the injector body 2 for receiving an actuator in the form of a solenoid valve assembly comprises an internal thread 33 in which the solenoid valve assembly can be fastened and an annular flange surface 34 which represents the transition area of the assembly space 4 into the valve space 14.
  • an internal thread 33 in which the solenoid valve assembly can be fastened and an annular flange surface 34 which represents the transition area of the assembly space 4 into the valve space 14.
  • FIG. 3 shows a top view of the injector body according to the invention.
  • the mouth of the bore 15 opposite the first point 26 can be seen on the top of the nozzle 6, from which the inlet bore section 9.1 extends through the connection area 5 on the inside of the nozzle 6 and the end face 7 at the second point 27 (cf. Sectional course IH-III) pierces.
  • the inlet bore 22, which acts on the valve chamber 14 in the injector body 2 branches off at an angular offset, which can be seen in FIG. 2.
  • the inlet bore 22 opens at an outlet point 24 within an annular groove 18 formed symmetrically in the valve chamber 14, which leads to a reduction in the reference voltage within the valve chamber 14 of approximately 20%.
  • the inlet bore section 9.1 merges below the second point 27 into the bore section 13 with a reduced diameter, which at an intersection point 12 oriented almost vertically within the transition region 20 merges into the nozzle supply bore / throttle bore 9, which is formed vertically in the injector body 2.
  • the solution proposed according to the invention allows, while maintaining the essential features of the injector body c 2, to raise the pressure level with which the injector body 2 can be acted upon, from approximately 1350 bar to over 1600 bar, without additional sealing elements being required.
  • the seal can be achieved by changing the position 25 of the inlet bore section 9.1, which runs through the connector 6, which is attached to the side of the injector body 2, so that the inlet bore section 9.1 can be sealed by the high-pressure connection accommodated in the connection area 5 on the connector 6.
  • the pressure level with which the injector body 2 designed according to the invention can now be acted upon is increased in particular by the fact that the inlet bore section 9.1 runs at an optimized inclination angle 30 with respect to the axis 19 of the injector body 2, so that an optimized knee angle 29 extends in the Transition area 20 in the inlet bore section 9.1 or bore section 13 and the nozzle supply bore / throttle bore 9 running perpendicularly in the injector body 2.
  • a decrease in the angle of inclination 30 according to the solution according to the invention results in an increase "the knee angle 10 (see FIG. representation according to Figure 1) to an optimized knee angle 29, for example 157 °, instead of 143.5 ° in accordance with the embodiments of the prior art in Figure 1. If DAR.
  • the pressure level with which the injector body 2 designed according to the invention can be acted upon can be increased by creating the greatest possible distance 31 between the inner wall 17 of the valve chamber 14 and the transition region 20, although the permissible outer wall thickness 32 of the injector body 2 increases note is.
  • a favorable course of the comparison voltage within the valve chamber 14 of the injector body 2 can be achieved by introducing a symmetrical annular groove 18 into the inner wall 17 delimiting the valve chamber 14.
  • the inlet bore 22 in the valve chamber 14, which is arranged at an angular offset 28, and the arrangement of the outlet point within the symmetrical annular groove 18 furthermore have a favorable influence on the voltage profile. If the inlet bore 22 is also formed at an angle 23 that is as flat as possible (see section II-II) that is more than 70 °, a favorable reference voltage can be achieved in the injector body 2.

Landscapes

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

Abstract

L'invention concerne un injecteur de carburant pourvu d'un corps (2) comprenant une tubulure (6) disposée latéralement. Cette tubulure (6) comprend une zone de raccordement (5) présentant une face (7) à partir de laquelle s'étendent un passage d'admission (22) conduisant à une chambre de soupape (14) à l'intérieur du corps (2) de l'injecteur ainsi qu'une section de passage d'admission (9.1) alimentant un passage d'alimentation de buse (9) dans le corps (2) de l'injecteur. La section de passage d'admission (9.1) et le passage d'alimentation de buse (9) forment une zone de transition (20). La section de passage d'admission (9.1) s'étend à travers la zone de raccordement (5) et elle est orientée par rapport à l'axe (19) du corps (2) de l'injecteur selon un angle d'inclinaison (30) permettant d'obtenir une zone de transition (20) pratiquement sans intersection.
PCT/DE2003/000882 2002-07-31 2003-03-18 Injecteur de carburant comprenant une zone de raccordement resistant a haute pression WO2004016937A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2004528284A JP4340231B2 (ja) 2002-07-31 2003-03-18 耐高圧性の接続領域を備えた燃料インジェクタ
DE50313269T DE50313269D1 (de) 2002-07-31 2003-03-18 Kraftstoffinjektor mit hochdruckfestem anschlussbereich
EP03724837A EP1527272B1 (fr) 2002-07-31 2003-03-18 Injecteur de carburant comprenant une zone de raccordement resistant a haute pression

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10234909A DE10234909A1 (de) 2002-07-31 2002-07-31 Kraftstoffinjektor mit hochdruckfestem Anschlußbereich
DE10234909.6 2002-07-31

Publications (1)

Publication Number Publication Date
WO2004016937A1 true WO2004016937A1 (fr) 2004-02-26

Family

ID=30469262

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2003/000882 WO2004016937A1 (fr) 2002-07-31 2003-03-18 Injecteur de carburant comprenant une zone de raccordement resistant a haute pression

Country Status (5)

Country Link
EP (1) EP1527272B1 (fr)
JP (1) JP4340231B2 (fr)
KR (1) KR100970298B1 (fr)
DE (2) DE10234909A1 (fr)
WO (1) WO2004016937A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100621110B1 (ko) * 2005-01-11 2006-09-13 삼성전자주식회사 냉장고
EP1843390B1 (fr) 2005-01-25 2011-11-09 Fujitsu Limited Composant a semi-conducteur dote d'une structure mis et son procede de fabrication
DE102007001555A1 (de) 2007-01-10 2008-07-17 Robert Bosch Gmbh Niederdruckdichtelement
DE102007018471A1 (de) 2007-04-19 2008-10-23 Robert Bosch Gmbh Verschneidungsbereich zwischen einer Hochdruckkammer und einem Hochdruckkanal
DE102008040381A1 (de) * 2008-07-14 2010-01-21 Robert Bosch Gmbh Hochdruckfester Kraftstoffinjektor

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5292072A (en) * 1990-03-29 1994-03-08 Cummins Engine Company, Inc. Fuel injectors and methods for making fuel injectors
EP0717227A2 (fr) * 1994-12-16 1996-06-19 Perkins Limited Procédé pour réduire les contraintes à la jonction d'un système de canaux d'écoulement de fluide sous haute pression et jonction ainsi réalisée
DE19640480A1 (de) 1996-09-30 1998-04-02 Bosch Gmbh Robert Kraftstoffhochdruckspeicher
DE19650865A1 (de) 1996-12-07 1998-06-10 Bosch Gmbh Robert Magnetventil
EP0916842A1 (fr) 1997-11-18 1999-05-19 ELASIS SISTEMA RICERCA FIAT NEL MEZZOGIORNO Società Consortile per Azioni Dispositif de commande d'un injecteur de combustible de moteurs à combustion interne
US5937520A (en) * 1996-12-10 1999-08-17 Diesel Technology Company Method of assembling fuel injector pump components
EP1030053A2 (fr) * 1999-02-16 2000-08-23 Siemens Aktiengesellschaft Injecteur pour un dispositif d'injection d'un moteur à combustion interne
DE19937946C1 (de) 1999-08-11 2001-04-19 Bosch Gmbh Robert Kraftstoffhochdruckspeicher für ein Kraftstoffeinspritzsystem für Brennkraftmaschinen
DE10022378A1 (de) * 2000-05-08 2001-11-22 Bosch Gmbh Robert Hochdruckfester Injektorkörper

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0932683A (ja) * 1995-07-14 1997-02-04 Isuzu Motors Ltd 内燃機関の燃料噴射装置
JP2000130293A (ja) * 1998-10-28 2000-05-09 Nissan Motor Co Ltd ディーゼルエンジンの燃料噴射装置

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5292072A (en) * 1990-03-29 1994-03-08 Cummins Engine Company, Inc. Fuel injectors and methods for making fuel injectors
EP0717227A2 (fr) * 1994-12-16 1996-06-19 Perkins Limited Procédé pour réduire les contraintes à la jonction d'un système de canaux d'écoulement de fluide sous haute pression et jonction ainsi réalisée
DE19640480A1 (de) 1996-09-30 1998-04-02 Bosch Gmbh Robert Kraftstoffhochdruckspeicher
DE19650865A1 (de) 1996-12-07 1998-06-10 Bosch Gmbh Robert Magnetventil
US5937520A (en) * 1996-12-10 1999-08-17 Diesel Technology Company Method of assembling fuel injector pump components
EP0916842A1 (fr) 1997-11-18 1999-05-19 ELASIS SISTEMA RICERCA FIAT NEL MEZZOGIORNO Società Consortile per Azioni Dispositif de commande d'un injecteur de combustible de moteurs à combustion interne
EP1030053A2 (fr) * 1999-02-16 2000-08-23 Siemens Aktiengesellschaft Injecteur pour un dispositif d'injection d'un moteur à combustion interne
DE19937946C1 (de) 1999-08-11 2001-04-19 Bosch Gmbh Robert Kraftstoffhochdruckspeicher für ein Kraftstoffeinspritzsystem für Brennkraftmaschinen
DE10022378A1 (de) * 2000-05-08 2001-11-22 Bosch Gmbh Robert Hochdruckfester Injektorkörper

Also Published As

Publication number Publication date
KR20050026036A (ko) 2005-03-14
JP4340231B2 (ja) 2009-10-07
JP2005534861A (ja) 2005-11-17
DE10234909A1 (de) 2004-02-19
EP1527272B1 (fr) 2010-11-17
KR100970298B1 (ko) 2010-07-16
EP1527272A1 (fr) 2005-05-04
DE50313269D1 (de) 2010-12-30

Similar Documents

Publication Publication Date Title
EP1485609B1 (fr) Dispositif d'injection de carburant pour des moteurs a combustion interne stationnaires
WO2001009507A1 (fr) Accumulateur de carburant haute pression
EP2504560B1 (fr) Raccord de tuyau sous pression pour système d'injection à rampe commune
EP1797314B1 (fr) Injecteur pour injecter du carburant sur un moteur a combustion interne
EP1527272B1 (fr) Injecteur de carburant comprenant une zone de raccordement resistant a haute pression
EP1574701A1 (fr) Injecteur de common rail
WO2008049665A1 (fr) Dispositif à soupape d'injection de carburant
DE10242894A1 (de) Kraftstoff-Einspritzsystem und Zylinderkopf mit einem zentralen Kraftstoffspeicher
EP1599670B1 (fr) Buse d'injection a trou borgne et a siege perfore destinee a un moteur a combustion interne et presentant un cone de transition entre le trou borgne et le siege d'aiguille de buse
WO2001011226A1 (fr) Accumulateur haute pression pour carburant
DE19953577A1 (de) Kraftstoffhochdruckspeicher
EP1435454A1 (fr) Une pièce, qui soutiene une pression interne, surtout pour un moteur à explosion avec une pompe à carburant à haute pression
DE102007019076A1 (de) Verteilerrohr, insbesondere für ein Common Rail Einspritzsystem eines Dieselmotors
DE10147830B4 (de) Kraftstoffinjektor
DE19843912B4 (de) Kraftstoffeinspritzdüse
WO2001086138A1 (fr) Corps d'injecteur resistant aux pressions elevees
DE10132245A1 (de) Druckfester Hochdrucksammelraum
EP1682771A1 (fr) Soupape de pompe a injection de carburant
WO2003027485A1 (fr) Systeme d'injection de carburant dote d'un injecteur hydrauliquement deconnecte de la conduite d'alimentation
AT512439A1 (de) Vorrichtung zum einspritzen von kraftstoff in den brennraum einer brennkraftmaschine
EP1880100B1 (fr) Soupape d'injection de carburant pour moteurs a combustion interne
DE10346242B4 (de) Injektorkörper für einen Common Rail Injektor
DE10300845A1 (de) Anschlussstutzen für Hochdruckverschraubungen
EP1921306A2 (fr) Corps d'injecteur doté d'un réservoir de carburant
EP1291519A2 (fr) Corps d'injecteur avec raccord de pression tangentiel

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): JP KR

AL Designated countries for regional patents

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 LU MC NL PT RO SE SI SK TR

WWE Wipo information: entry into national phase

Ref document number: 2003724837

Country of ref document: EP

121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 1020057001584

Country of ref document: KR

WWE Wipo information: entry into national phase

Ref document number: 2004528284

Country of ref document: JP

WWP Wipo information: published in national office

Ref document number: 1020057001584

Country of ref document: KR

WWP Wipo information: published in national office

Ref document number: 2003724837

Country of ref document: EP