EP1772618B1 - Injecteur à rampe commune - Google Patents

Injecteur à rampe commune Download PDF

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Publication number
EP1772618B1
EP1772618B1 EP06123003A EP06123003A EP1772618B1 EP 1772618 B1 EP1772618 B1 EP 1772618B1 EP 06123003 A EP06123003 A EP 06123003A EP 06123003 A EP06123003 A EP 06123003A EP 1772618 B1 EP1772618 B1 EP 1772618B1
Authority
EP
European Patent Office
Prior art keywords
nozzle
spring
space
pressure
injector
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
EP06123003A
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German (de)
English (en)
Other versions
EP1772618A1 (fr
Inventor
Dieter Kienzler
Patrick Mattes
Wolfgang Stoecklein
Friedrich Boecking
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
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Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1772618A1 publication Critical patent/EP1772618A1/fr
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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
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/042—The valves being provided with fuel passages
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/16—Sealing of fuel injection apparatus not otherwise provided for
    • 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
    • F02M2547/00—Special features for fuel-injection valves actuated by fluid pressure
    • F02M2547/001—Control chambers formed by movable sleeves
    • 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
    • F02M2547/00—Special features for fuel-injection valves actuated by fluid pressure
    • F02M2547/006—Springs assisting hydraulic closing force
    • 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
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
    • F02M61/12—Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies
    • 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

Definitions

  • the invention relates to a common rail injector for injecting fuel in a common rail injection system of an internal combustion engine having an injector housing with a fuel inlet communicating with a central fuel high pressure accumulator outside the injector housing and with a pressure space inside the injector housing. is injected from the high-pressure fuel in response to the position of a control valve, which ensures that in a longitudinal bore of the injector axially against the biasing force of a nozzle spring, which is accommodated in a nozzle spring chamber, movable back and forth nozzle needle lifts from a seat when the pressure in the pressure chamber is greater than the pressure in a control chamber, which is connected via an inlet throttle with the fuel inlet.
  • a high-pressure pump delivers the fuel into the central high-pressure accumulator, which is referred to as a common rail.
  • high pressure lines lead to the individual injectors, which are assigned to the engine cylinders.
  • the injectors are controlled individually by the engine electronics.
  • the rail pressure is in the pressure chamber and on the control valve. When the control valve opens, high-pressure fuel passes past the nozzle needle lifted against the biasing force of the nozzle spring in the combustion chamber.
  • An injector of a pump-nozzle unit in which a control chamber sleeve is guided on the nozzle needle, which separates a control chamber from a high-pressure nozzle spring chamber.
  • the sleeve is held by a nozzle spring arranged in the nozzle spring in contact with the injector, so that the control chamber is separated from the nozzle spring chamber.
  • the fuel inlet in a pressure chamber which is exposed to the nozzle needle with a pressure shoulder acting in the opening direction, takes place through the nozzle spring chamber.
  • the nozzle spring is supported directly on an integrally formed on the nozzle needle collar.
  • the object of the invention is to provide a common rail injector, which ensures a good closing behavior at a high nozzle needle speed.
  • the object is in a common rail injector for injecting fuel in a common rail injection system of an internal combustion engine having an injector with a fuel inlet, which communicates with a central fuel high pressure accumulator outside the injector and with a pressure chamber inside the injector , from the with High-pressure fuel is injected in response to the position of a control valve, which ensures that in a longitudinal bore of the injector axially against the biasing force of a nozzle spring, which is accommodated in a nozzle spring space, reciprocally movable nozzle needle lifts from a seat when the Pressure in the pressure chamber is greater than the pressure in a control chamber, which is connected via an inlet throttle with the fuel inlet, achieved in that the control chamber is limited by a sleeve which can be combined under sealing effect at the combustion chamber distal end of the nozzle needle, without the volume of the control chamber depends on the installation space of the nozzle spring.
  • the injection time and the injection timing can be set exactly.
  • the control chamber can be made very small, resulting in a fast response of the injector according to the invention.
  • the maximum achievable nozzle needle speed In order to get higher nozzle needle speeds, which is especially important when needle closing, the nozzle needle diameter must be reduced. For a closing speed of 1 m / sec, a needle diameter of less than 3.5 mm is necessary with an acceptable control quantity. This is technically very complicated and therefore expensive.
  • the nozzle needle diameter can be chosen freely and is not dependent on the dimensions of the nozzle spring. Compared to conventional jet needles, the length can be significantly reduced, which contributes to a precise stroke stop.
  • the invention is characterized in that a step is formed on the nozzle needle, which forms a stop for a spring plate and that the Düsennadelhub and the Düsenfedervorschreib by means of spacer elements are adjustable between the spring plate and the stop for the spring plate or between the Nozzle spring and the abutments are arranged for the nozzle spring.
  • a step is formed on the nozzle needle, which forms a stop for a spring plate and that the Düsennadelhub and the Düsenfedervorschreib by means of spacer elements are adjustable between the spring plate and the stop for the spring plate or between the Nozzle spring and the abutments are arranged for the nozzle spring.
  • a particular embodiment of the invention is characterized in that a biting edge is formed on the surface of the sleeve, which is in contact with the injector housing. It is thereby achieved that the control chamber formed in the interior of the sleeve remains separated from the nozzle spring chamber surrounding the sleeve.
  • Another particular embodiment of the invention is characterized in that the inner diameter of the sleeve smaller than the guide diameter on the nozzle needle.
  • the inner diameter of the sleeve and the corresponding outer diameter on the nozzle needle can be made much smaller than in conventional injectors.
  • Another particular embodiment of the invention is characterized in that the nozzle needle is guided between the nozzle spring chamber and the pressure chamber. This provides the advantage that the nozzle needle guide no longer has a sealing function. This reduces the quality requirements of the guide, which leads to savings in production. Because there is the same pressure on both sides of the guide, there is no longer any pilot leakage.
  • Another particular embodiment of the invention is characterized in that the nozzle spring chamber communicates via a bore with the pressure chamber. As a result, the complete circumference of the nozzle needle can be used for guidance purposes.
  • a further particular embodiment of the invention is characterized in that at least one flat surface is formed on the nozzle needle between the nozzle spring chamber and the pressure chamber, past which fuel can pass from the nozzle spring chamber into the pressure chamber.
  • inlet throttle is integrated into the nozzle needle, the sleeve or the injector housing.
  • the inlet throttle is used to pressure surges during operation prevent.
  • Another particular embodiment of the invention is characterized in that the sleeve has a collar at its end remote from the combustion chamber.
  • the collar forms a first abutment for the nozzle spring.
  • Another particular embodiment not according to the present invention is characterized in that in the nozzle needle a circumferential groove is recessed, in which a retaining ring is supported, which forms a stop for a spring plate.
  • the outer diameter of the nozzle needle in the control chamber and the guide diameter of the nozzle needle between the nozzle spring chamber and the pressure chamber can be the same size. This is in the manufacturing, e.g. by lapping, an advantage.
  • Another particular embodiment not according to the present invention is characterized in that the retaining ring is in two parts and is fixed in the assembled state by the spring plate. As a result, a release of the spring plate is prevented during operation in a simple manner.
  • Another particular embodiment of the invention is characterized in that the Düsennadelhub is defined by the distance between the sleeve and the spring plate.
  • This purely mechanical Düsennadelhubendanschlag provides the advantage that the Düsennadelhub is exactly reproducible. As a result, the course of injection can be reliably shaped. So-called hydraulic bonding is avoided.
  • Another particular embodiment not according to the present invention is characterized in that the Düsennadelhub is defined by the distance between the combustion chamber remote end face of the nozzle needle and the injector.
  • This embodiment has the advantage that it is particularly easy to implement in terms of manufacturing technology.
  • Another particular embodiment not according to the present invention is characterized in that in the combustion chamber remote end face of the nozzle needle and / or in the opposite surface of the injector housing recesses are provided whose dimensions are adapted to the volume of the control chamber.
  • the nozzle needle stroke stop In order to achieve the most linear quantity characteristic diagram possible during operation of the injector, it makes sense not to design the nozzle needle stroke stop purely hydraulically. In a purely hydraulic Düsennadelhubanschlag it may happen that the nozzle needle in the open position on a pressure pad "floats". This can lead to vibrations of the nozzle needle. The oscillations in turn result in non-linear quantity maps. Since this is a dynamic movement, there is a greater tolerance dependency.
  • the vibrations of the nozzle needle may depend on the inlet and the outlet throttle, the friction of the nozzle needle guide, the control chamber volume, etc.
  • a vibration of the nozzle needle is indeed avoided, but it is a slightly larger tax amount required. This has an unfavorable effect on the efficiency of the injector.
  • a "semi-hydraulic" stop is created. The flow cross-section remaining at the stop is just chosen so large that avoids oscillation of the nozzle needle, but the control amount at the end stop as far as possible In this case, it is advantageous that the injector according to the invention has no leakage, ie no return quantity is generated without activation of the injector.
  • Another particular embodiment not according to the present invention is characterized in that in the combustion chamber remote end face of the nozzle needle at least one axial bore is provided which is in communication with at least one radial bore in the nozzle needle.
  • This embodiment has the advantage that it is insensitive to mechanical shrinkage, i. the flow cross section does not change over the service life.
  • the injector housing 1 comprises a nozzle body 2, which projects with its lower free end into the combustion chamber of the internal combustion engine to be supplied. With its upper, combustion chamber remote end face of the nozzle body 2 is clamped by means of a clamping nut 5 axially against a valve body 3 and an injector 4.
  • an axial guide bore 6 is recessed.
  • a nozzle needle 8 is guided axially displaceable.
  • a sealing surface is formed, which cooperates with a sealing seat which is formed on the nozzle body 2.
  • the nozzle needle 8 has three regions with different diameters d1, d2 and d3.
  • the diameter d2 is the largest and serves to guide the nozzle needle 8 in the nozzle body 2.
  • the diameter d1 is the smallest. In the section with the
  • Diameter d1 is a collar 16 with a flat 17 formed on its outer peripheral surface.
  • the collar 16 forms a second guide for the nozzle needle 1.
  • the flattening 17 in the collar 16 is a flow connection allows in the longitudinal direction of the nozzle needle 1 from one side of the collar 16 to the other side.
  • the diameter d3 is larger than the diameter dl but smaller than the diameter d2.
  • the diameter d3 is also referred to as the control diameter.
  • the nozzle needle 8 is biased by means of a nozzle spring 19 against the nozzle needle seat in the region of the injection holes 10 and 11.
  • the nozzle spring 19 is arranged in a nozzle spring chamber 20, in which a fuel inlet 21 opens.
  • a fuel inlet 21 is supplied from a (not shown) rail with fuel, which is acted upon by high pressure.
  • the high-pressure fuel from the nozzle spring chamber 20 passes into a pressure chamber 24.
  • the pressure chamber 24 is connected via an annular space 25 with the spray holes 10 and 11 in connection, when the nozzle needle 1 against the biasing force of the nozzle spring 19 lifted from its seat is.
  • a step results on the nozzle needle 8, which forms a stop for a spring plate 26.
  • the biasing force of the nozzle spring 19 is transmitted to the nozzle needle 8.
  • the other end of the nozzle spring 19 is supported on a collar 27, which is formed on a sleeve 28.
  • the inner diameter of the sleeve 28 is slightly larger than the control diameter d3 of the nozzle needle B.
  • the dimensions of the diameters are selected so that the sleeve 28 is displaceable relative to the nozzle needle 8 under sealing action.
  • the biasing force of the nozzle spring 19 the sleeve 28 is pressed with a biting edge 29 against the valve body 3.
  • a control chamber 30 provided in the interior of the sleeve 28, which is delimited by the end face of the nozzle needle 8 remote from the combustion chamber, is sealed off from the nozzle spring chamber 20.
  • the control chamber 30 is connected via an inlet throttle 31 with the nozzle spring chamber 20.
  • the control chamber 30 is connected via an outlet throttle 32 with a (not shown) discharge space in connection.
  • the connection of the control chamber 30 with the discharge chamber depends on the position of a control valve member 33.
  • FIG. 2 illustrated second embodiment corresponds largely to the in Fig. 1 illustrated first embodiment.
  • the same reference numerals will be used to designate like parts.
  • a flattening 36 is formed in the portion of the nozzle needle 8 with the diameter d2.
  • the flattening 36 provides a connection between the nozzle spring chamber 20 and the pressure chamber 24. Otherwise, there are no differences between the two embodiments.
  • FIG. 3 illustrated third non-inventive embodiment differs from the second embodiment in that the inlet throttle is not disposed in the sleeve 28.
  • the inlet throttle in the form of holes of different orientations and different dimensions can be integrated into the nozzle needle 8.
  • the inlet throttle can also be integrated in the valve body 3.
  • the spring plate 26 is not supported directly on the nozzle needle 8, but only indirectly via a resilient retaining ring 42 having a rectangular cross-section.
  • the retaining ring 42 is formed slotted.
  • a two-part retaining ring 46 can be used instead of a one-piece, clip-on retaining ring.
  • the retaining ring 46 consists of two ring halves, which are placed in the associated groove in the nozzle needle 8 and fixed by means of the spring plate 26.
  • the stroke is not, as in the in Fig. 1 illustrated embodiment, limited by the distance H1 of the combustion chamber remote end face of the nozzle needle 8 and the opposite surface of the valve body 3, but by the distance H2 between the sleeve 28 and the spring plate 26.
  • the stroke H2 can be adjusted by a spacer 51.
  • the spacer 51 is arranged for this purpose between the shoulder, which results from the difference in diameter between d2 and d3, and the spring plate 26.
  • the spring biasing force of the nozzle spring 19 can be adjusted by means of a spacer 50.
  • the spacer 50 between the nozzle spring 19 and the collar 27 of the sleeve 28 is arranged.
  • two grooves 55 and 56 are arranged crosswise in the end face 54 of the nozzle needle 8.
  • a purely mechanical stop of the needle nozzle is realized. If the dimensions of the grooves 54 and 55 are adapted to the injector, this can become a "semi-hydraulic stop". The one at the stop remaining breakthrough cross-section is just chosen so large that a vibration of the nozzle needle 8 Although avoided, the control amount at the end stop but is lowered as much as possible.
  • a throttle bore 58 is arranged parallel to the longitudinal axis of the nozzle needle 8 in the end face 54 of the nozzle needle 8.
  • the throttle bore 58 opens into a bore 59 which extends transversely to the longitudinal axis of the nozzle needle 8.
  • the bore 59 is a blind bore, which is open to the combustion chamber distant, frustoconical end of the nozzle needle 8 out.
  • a groove 61 is recessed instead of in the combustion chamber remote end face 54 of the nozzle needle 8 in the opposite surface 62 of the valve body 3.
  • the groove 61 has the same function as the grooves 54 and 55 in which in the 8 and 9 illustrated embodiment.

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  • 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)
  • Platform Screen Doors And Railroad Systems (AREA)
  • Seats For Vehicles (AREA)

Claims (9)

  1. Injecteur à rampe commune pour injecter du carburant dans un système d'injection à rampe commune d'un moteur à combustion interne, comportant un boîtier d'injecteur (1) muni d'une alimentation en carburant (21) reliée à un accumulateur central de carburant à haute pression, extérieur au boîtier (1) de l'injecteur et à une chambre de pression (24) dans le boîtier d'injecteur (1), à partir duquel du carburant mis à haute pression est injecté en fonction de la position d'une soupape de commande (33) qui assure qu'une aiguille d'injecteur (8) mobile suivant un mouvement de va-et-vient dans un perçage longitudinal (6) de l'injecteur, axialement, contre la force de précontrainte d'un ressort d'injecteur (19) logé dans une chambre à ressort d'injecteur (20), se soulève de son siège lorsque la pression régnant dans la chambre de pression (24) dépasse la pression dans une chambre de commande (30) reliée par un organe d'étranglement d'alimentation (31, 38, 39) à l'alimentation en carburant,
    la chambre de commande (30) étant délimitée par un manchon (28) coulissant avec effet d'étanchéité contre l'extrémité de l'aiguille d'injecteur (8) éloignée de la chambre de combustion et tenue en appui contre le boîtier d'injecteur (1) par l'intermédiaire d'un ressort (19),
    le manchon (28) étant tenu contre le boîtier d'injecteur (1) par le ressort d'injecteur (19),
    le manchon (28) étant installé dans une chambre de ressort d'injecteur (20), et
    l'alimentation en carburant (21) se fait dans la chambre de pression (24) à travers la chambre de ressort d'injecteur (20),
    caractérisé en ce que
    l'aiguille d'injecteur (8) comporte un épaulement constituant une butée pour une coupelle de ressort (26), et
    la course (H2) de l'aiguille d'injecteur et la précontrainte du ressort d'injecteur se règlent à l'aide d'éléments d'écartement (50, 51) installés entre la coupelle de ressort (26) et la butée de la coupelle de ressort ou entre le ressort d'injecteur (19) et les appuis du ressort d'injecteur (19).
  2. Injecteur à rampe commune selon la revendication 1,
    caractérisé par
    une arête vive (29) réalisée sur la surface du manchon (28) qui est en appui contre le boîtier d'injecteur (1).
  3. Injecteur à rampe commune selon l'une des revendications précédentes,
    caractérisé en ce que
    le diamètre intérieur (d3) du manchon (28) est inférieur au diamètre de guidage (d2) de l'aiguille d'injecteur (8).
  4. Injecteur à rampe commune selon l'une des revendications précédentes,
    caractérisé en ce que
    l'aiguille d'injecteur (8) est guidée entre la chambre de ressort d'injecteur (20) et la chambre de pression (24).
  5. Injecteur à rampe commune selon la revendication 4,
    caractérisé en ce que
    la chambre de ressort d'injecteur (20) est reliée par un perçage (23) du boîtier d'injecteur (1) à la chambre de pression (24).
  6. Injecteur à rampe commune selon la revendication 4,
    caractérisé en ce qu'
    entre la chambre de ressort d'injecteur (20) et la chambre de pression (24), l'aiguille d'injecteur (8) comporte au moins une surface plane (36) sur laquelle le carburant peut passer de la chambre de ressort d'injecteur (20) dans la chambre de pression (24).
  7. Injecteur à rampe commune selon l'une des revendications précédentes,
    caractérisé en ce que
    l'organe d'étranglement d'alimentation (31, 38, 39) est intégré dans le manchon (28), dans l'aiguille d'injecteur (8) ou dans le boîtier d'injecteur (1).
  8. Injecteur à rampe commune selon l'une des revendications précédentes,
    caractérisé en ce que
    l'extrémité du manchon (28) éloignée de la chambre de combustion comporte une collerette (27).
  9. Injecteur à rampe commune selon l'une des revendications 1 à 8,
    caractérisé en ce que
    la course (H2) de l'aiguille d'injecteur est définie par la distance entre le manchon (28) et la coupelle de ressort (26).
EP06123003A 1999-08-04 2000-08-02 Injecteur à rampe commune Expired - Lifetime EP1772618B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19936668A DE19936668A1 (de) 1999-08-04 1999-08-04 Common-Rail-Injektor
EP00958210A EP1117920B1 (fr) 1999-08-04 2000-08-02 Injecteur a rampe commune

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP00958210A Division EP1117920B1 (fr) 1999-08-04 2000-08-02 Injecteur a rampe commune

Publications (2)

Publication Number Publication Date
EP1772618A1 EP1772618A1 (fr) 2007-04-11
EP1772618B1 true EP1772618B1 (fr) 2008-11-05

Family

ID=7917134

Family Applications (2)

Application Number Title Priority Date Filing Date
EP06123003A Expired - Lifetime EP1772618B1 (fr) 1999-08-04 2000-08-02 Injecteur à rampe commune
EP00958210A Expired - Lifetime EP1117920B1 (fr) 1999-08-04 2000-08-02 Injecteur a rampe commune

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP00958210A Expired - Lifetime EP1117920B1 (fr) 1999-08-04 2000-08-02 Injecteur a rampe commune

Country Status (8)

Country Link
US (1) US6705551B1 (fr)
EP (2) EP1772618B1 (fr)
JP (1) JP4746230B2 (fr)
KR (1) KR20010075570A (fr)
AT (2) ATE413526T1 (fr)
CZ (1) CZ20011135A3 (fr)
DE (3) DE19936668A1 (fr)
WO (1) WO2001011222A1 (fr)

Families Citing this family (66)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10032517A1 (de) * 2000-07-05 2002-01-24 Bosch Gmbh Robert Injektor mit Steuerteilführung
WO2002044546A1 (fr) * 2000-11-28 2002-06-06 Siemens Aktiengesellschaft Chambre de commande et piston pilote destines a une soupape d'injection d'un moteur a combustion interne
DE10111783B4 (de) * 2001-03-12 2005-10-20 Bosch Gmbh Robert Einspritzdüse
DE10115169A1 (de) * 2001-03-27 2002-10-17 Mtu Friedrichshafen Gmbh Modular aufgebauter Kraftstoff-Injektor
DE10121340A1 (de) * 2001-05-02 2002-11-14 Bosch Gmbh Robert Common-Rail-Injektor
DE10122256A1 (de) * 2001-05-08 2002-11-21 Bosch Gmbh Robert Kraftstoff-Einspritzvorrichtung für Brennkraftmaschinen, insbesondere Common-Rail-Injektor, sowie Kraftstoffsystem und Brennkraftmaschine
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US6705551B1 (en) 2004-03-16
JP2003506622A (ja) 2003-02-18
DE50014113D1 (en) 2007-04-12
EP1117920B1 (fr) 2007-02-28
WO2001011222A1 (fr) 2001-02-15
CZ20011135A3 (cs) 2002-01-16
ATE355455T1 (de) 2006-03-15
KR20010075570A (ko) 2001-08-09
EP1772618A1 (fr) 2007-04-11
JP4746230B2 (ja) 2011-08-10
EP1117920A1 (fr) 2001-07-25
DE19936668A1 (de) 2001-02-22
ATE413526T1 (de) 2008-11-15
DE50015444D1 (de) 2008-12-18

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