EP2185808B1 - Soupape d'injection de carburant pour moteurs à combustion interne - Google Patents

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

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Publication number
EP2185808B1
EP2185808B1 EP08774908A EP08774908A EP2185808B1 EP 2185808 B1 EP2185808 B1 EP 2185808B1 EP 08774908 A EP08774908 A EP 08774908A EP 08774908 A EP08774908 A EP 08774908A EP 2185808 B1 EP2185808 B1 EP 2185808B1
Authority
EP
European Patent Office
Prior art keywords
fuel injection
injection valve
stop
intermediate element
actuating element
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.)
Not-in-force
Application number
EP08774908A
Other languages
German (de)
English (en)
Other versions
EP2185808A1 (fr
Inventor
Holger Rapp
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2185808A1 publication Critical patent/EP2185808A1/fr
Application granted granted Critical
Publication of EP2185808B1 publication Critical patent/EP2185808B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • F02M63/0024—Valves characterised by the valve actuating means electrical, e.g. using solenoid in combination with permanent magnet
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
    • F02M63/0043—Two-way valves
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
    • F02M63/0078—Valve member details, e.g. special shape, hollow or fuel passages in the valve member
    • F02M63/008—Hollow valve members, e.g. members internally guided
    • 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
    • F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
    • F02M2200/306—Fuel-injection apparatus having mechanical parts, the movement of which is damped using mechanical means
    • 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
    • F02M2200/50—Arrangements of springs for valves used in fuel injectors or fuel injection pumps

Definitions

  • the invention relates to a fuel injection valve for internal combustion engines, in particular a solenoid valve for common rail injectors (CRI), according to the preamble of claim 1.
  • a fuel injection valve for internal combustion engines in particular a solenoid valve for common rail injectors (CRI), according to the preamble of claim 1.
  • CRI common rail injectors
  • EP 1 612 403 A1 are known fuel injection valves for high-speed, self-igniting internal combustion engines, which inject the fuel directly into a combustion chamber of an internal combustion engine.
  • the influence on the armature stroke is particularly large. These include those solenoid valves in which the upper stroke stop is formed on the magnet. Due to the rail pressure, the situation occurs that the valve seat changes its axial position relative to the holding body, whereas the position of the upper stroke stop remains unchanged. Overall, this means that the armature stroke decreases with increasing rail pressure.
  • An injection valve consists of a large number of individual parts which, when assembled, must interact very precisely. These include in particular the setting of the stroke of the actuating element, also called armature stroke, the setting of the valve spring force and finally also ensuring a minimum distance between the actuator and the actuator. (For a solenoid valve, this distance is called the residual air gap).
  • the object of the invention is to show a fuel injection valve according to the preamble of claim 1, in particular a solenoid valve, which is as simple as possible in terms of construction, adjustment and assembly and at the same time offers good adjustability of the valve parameters to be set.
  • a possibility is to be shown, in which the armature stroke little changes even at high rail pressure and in particular remains essentially unchanged.
  • a fuel injection valve according to the preamble of claim 1, characterized in that the adjusting element, which is also commonly referred to as an anchor or as a sealing sleeve having a central through hole comprising a tapered portion in which a thickening of an intermediate member is arranged wherein the diameter of the thickening is greater than the smallest diameter of the tapered portion of the central through-hole of the actuating element, wherein the intermediate element is a stop element has, which is axially displaceable only up to an upper stop on the intermediate element and which comes in axial displacement on the intermediate element downwards into contact with the actuating element.
  • top and bottom are always used in accordance with the illustration of the invention in the drawing.
  • the central through hole is preferably designed as an inner bore, which is tapered in the upper region.
  • the intermediate element is guided or inserted through the inner bore. Due to the thickening a lower stop for the actuator is formed on the intermediate element. In the lowest possible axial position of the actuating element relative to the intermediate element, a contact line is formed between these two elements.
  • This is preferably designed as a sealing seat and is used in the assembled state of the valve to seal a pressure chamber.
  • the stop element the axial play of the adjusting element between its usually designed as a sealing seat lower stop on the intermediate element and its upper stop is set. Said axial clearance, which is equal to the armature stroke of the switching valve, can thus be adjusted by the thickness of the stop element.
  • An aspect of the invention is to be seen in the fact that the limitation of the upper stroke stop, so when the actuator is in the greatest possible proximity to the actuator, not by means of an element which is located directly between the actuator and the actuator, for example a Rest Kunststoffspaltsscale at a Magnetic valve. Rather, the stroke stop is realized by means of the intermediate element, which is supported on the actuator or on other parts of the injection valve. This results in an injection valve with a simple structure, which also allows easy assembly of the injector.
  • both the upper and the lower stroke stop of the adjusting element which is also called anchor or sealing sleeve, formed on the intermediate element or provided or mounted and are only a short distance from each other.
  • a preferred embodiment of the valve is characterized in that the stop element rests against the end face of the actuating element. This provides a simple way to define the upper stroke stop and to initiate the force that stops the stop element at the end of the defined path in the actuator. In particular, it is advantageous if the stop element mechanically blocks the movement of the actuating element, since this results in a reliable and easy-to-implement design.
  • a further preferred embodiment of the valve is characterized in that the intermediate element has at least one first groove into which the stop element is inserted, wherein the stop element at least partially protrudes from the first groove.
  • the stopper can be produced inexpensively and mechanically robust.
  • the extension of the stop element in the longitudinal direction of the intermediate element is less than the distance between the bearing surface for the stop element on the actuating element and the upper end face of the first groove in the intermediate element, which results when the actuating element is at its lower stop located on the intermediate element. This results in a defined play of the stop element and thus also the adjusting element in the longitudinal direction relative to the intermediate element.
  • the stop element is designed as a sickle disc.
  • the intermediate element can be guided through an opening whose diameter is smaller than that of the sickle disk, and the sickle disk are then placed on it. This results in a greater freedom of design and a simplification of the assembly.
  • a further preferred exemplary embodiment of the valve is characterized in that the fuel injection valve has a valve spring for acting on the actuating element in the direction of the sealing seat, wherein the valve spring is supported on one side on the stop element and on another side on a holding region, which is formed on the intermediate element ,
  • the valve spring is supported in a known manner on the actuating element.
  • the embodiment proposed here offers the advantage that the stop element always has a fixed axial position with respect to the actuating element and consequently can not wobble during switching operations nor can it strike only selectively at first.
  • the intermediate element can already be manufactured or assembled with adjusting element, stop element and holding region before it is inserted into the injection valve.
  • a further preferred embodiment of the valve is characterized in that the holding area is a holding element has, which is inserted into a second groove formed on the intermediate element and at least partially protrudes from the second groove.
  • This embodiment provides a structurally simple and cost-effective solution.
  • the holding element is preferably designed as a sickle disc, with the same advantages as explained for the stop element.
  • a further preferred embodiment of the valve is characterized in that the intermediate element has at its first end, which faces away from the actuating element, a drain groove, one or more obliquely running drain holes or a central, opening into a transverse bore drainage hole. In this way, the required outflow of fuel from the armature space to the return port can be realized.
  • the stop element and / or the retaining element is secured in its seat in the respective groove by means of a fixing element.
  • the fixing element in particular a fixing sleeve, preferably encloses the respective element and thus ensures that the respective element remains radially positioned and in particular can not escape from the groove provided for the respective element in the intermediate element.
  • a further preferred embodiment of the valve is characterized in that the actuator is supported with an outer region on a holding body of the fuel injection valve.
  • the support preferably takes place via the outer pole. This creates between the upper end face of the guide element, also called anchor guide, and the lower end face of the intermediate element, also called seat pin, a fuel volume.
  • the intermediate element, actuator and stopper element and optionally from the holding area and valve spring existing assembly is not already attached otherwise, it is, as soon as the rail pressure applied, up to its desired position, preferably pressed against a fixed to the holding body stop.
  • a spring is arranged between the guide element and the intermediate element. This causes the switching valve is in its set position even in the pressureless state.
  • a further preferred embodiment of the valve is characterized in that the intermediate element and the guide element are made in one piece. This allows a stable bond between the actuator, the intermediate element and the guide element. In particular, when the actuator and guide element on the same reference element, usually supported on the holding body of the injection valve, the composite is less sensitive to fluctuations in the rail pressure, which can otherwise lead to strains and / or displacements.
  • FIG. 1 a fuel injection valve 10 according to the invention with the fuel-supplying components 12 is shown schematically in longitudinal section.
  • the basic mode of operation of such a fuel injection valve 10 is known to the person skilled in the art and will therefore not be explained in detail. More detailed information can be found for example in the cited document and in the application DE 10 2006 027 485 A1 ,
  • the fuel injection valve 10 has a valve needle 14, a control chamber 16, which is operatively connected to the valve needle 14, a drain channel 18, which is designed to connect the control chamber 16 with a leakage oil chamber 20, and a control valve 22, which is used to open and close the drain channel 18 is formed.
  • the control valve 22 has a guide element 24, also called guide pin on which an actuator 26, also called sealing sleeve or armature, is held axially displaceable, wherein the actuator 26 is acted upon in the direction of a sealing seat 28 with a force.
  • the control valve 22 further includes an actuator 29, here an electromagnet, which is adapted to lift the actuator 26 from the sealing seat 28 up-related to the figure.
  • the actuator 29 is supported here with its outer region on projections 30 of the holding body 31.
  • FIG. 2 is an enlargement of FIG. 1 shown in the region of the control valve 22.
  • an intermediate element 32 which forms the sealing seat 28 inter alia in cooperation with the adjusting element 26 .
  • the grooves 34, 36 are here executed annularly along the entire circumference of the intermediate element 32.
  • a stop member 38 is inserted, which protrudes from the first groove 34 and is designed here as a sickle disc.
  • the stop element 38 is displaceable along a longitudinal direction L of the intermediate element 32 by a defined path, which will be shown in more detail below.
  • the stop element 38 bears against an end face 40 of the actuating element 26 and interacts with it in such a way that an upper stroke stop (indicated by the line 42) of the actuating element 26 is predetermined.
  • a valve spring 44 provides a biasing force that pushes the stop member 38, and upon application of the actuator 26, also the actuator 26, down-relative to the figure.
  • the valve spring 44 is supported on its one side 46 on the stop element 38 and on its other side 48 on a holding portion 50 which is formed on the intermediate element 32.
  • the holding portion 50 has the second groove 36 and a holding member 52 which is designed as a sickle disc.
  • the stop element 38 is secured with a first fixing element 54 and the holding element 52 with a second fixing element 56 in the respective seat.
  • the intermediate element 32 has a drainage groove 60 at its first end 58. On the first end 58, an optional adjustment disk 62 for the residual air gap is also shown. Furthermore, a dashed circle 62 is shown, which indicates a region of the control valve 22, which is shown enlarged in the following figure.
  • the intermediate element 32 is, as already out FIG. 1 can be seen, with respect to the actuator 29 is not arranged displaced upwards.
  • FIG. 3 represents the area enlarged, which was previously indicated by the circle 62. By means of two dashed parallel lines, the path d is shown, by which the spacer 38 in the first groove 34 can shift.
  • the valve spring 44 presses the stop element 38 down-related to the figure. Since the end face 40 of the actuating element 26 bears against the stop element 38, the actuating element 26 is also pressed down against the sealing seat 28. If now the actuator 29 is actuated, the actuator 26 is pulled against the force of the valve spring 44 upwards. The stop element 38 now sets the path d back, since the magnetic attraction of the actuator 29 to the actuator 26 is greater than the force of the valve spring 44. After the stop element 38 has been pushed by the actuator 26 by the way d up, it hits the top End of the groove 34 and is mechanically blocked.
  • the actuator 26 Since the end face 40 of the actuating element 26 bears against the stop element 38, Also, a further movement of the actuating element 26 is prevented. Thus, the actuator 26 has well defined the upper stroke stop 42 reached. If the actuator 29 is de-energized, eliminates the attraction of the actuator 26, and the valve spring 44 pushes the stop member 38 down and thus the actuator 26 against the sealing seat 28. Since in this way, the lower stroke stop on the sealing seat 28 is well defined, can be determined by the invention, the total stroke of the actuator 26.
  • FIG. 4 shows the control valve FIG. 2 with the guide element 24 and the actuator 29, which is designed as an electromagnet and has a magnetic core 64 and a magnetic coil 66.
  • the intermediate element 32 is seated on the guide element 24, wherein a spring 68, also called a position spring or contact spring, is arranged between the guide element 24 and the intermediate element 32.
  • a spring 68 also called a position spring or contact spring, is arranged between the guide element 24 and the intermediate element 32.
  • a residual air gap remains between the actuating element 26 and the actuator 29. This residual air gap can easily be adjusted in the fuel injection valve 10 according to the invention, optionally using the adjusting washer 62 shown.
  • FIGS. 5, 6 and 7 show embodiments of the intermediate element 32nd FIG. 5 shows the intermediate element 32 FIG. 2
  • FIG. 6 shows an intermediate element 32 'with a central drain hole 70, which opens into a transverse bore 72
  • FIG. 7 shows an intermediate element 32 ", which is formed integrally with the guide element 24.
  • the last-mentioned embodiment can be used in particular for the fact that the magnetic core 64 is supported via the intermediate element 32" in the holding body.

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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)
  • Fuel-Injection Apparatus (AREA)

Claims (10)

  1. Soupape d'injection de carburant (10) pour moteurs à combustion interne, comprenant une aiguille de soupape (14) qui, par son déplacement longitudinal, commande l'ouverture d'au moins une ouverture d'injection, un espace de commande (16) dont la pression agit au moins indirectement sur l'aiguille de soupape (14) et qui peut être connecté par un canal d'écoulement (18) à un espace d'huile de fuite (20), et une soupape de commande (22), qui est réalisée pour ouvrir et fermer le canal d'écoulement (18), la soupape de commande (22) présentant un élément de réglage (26) maintenu de préférence déplaçable sur un élément de guidage (24), qui est sollicité par une force dans la direction d'un siège d'étanchéité (28), et un actionneur (30) pour soulever l'élément de réglage (26) du siège d'étanchéité (28), caractérisée en ce que l'élément de réglage (26) présente un trou de passage central qui comprend une portion se rétrécissant, dans laquelle est disposé un épaississement d'un élément intermédiaire (32), le diamètre de l'épaississement étant supérieur au plus petit diamètre de la portion se rétrécissant du trou de passage central de l'élément de réglage (26), l'élément intermédiaire (32) présentant un élément de butée (38) qui ne peut être déplacé axialement que jusqu'à une butée supérieure sur l'élément intermédiaire (32), et qui, dans le cas d'un déplacement axial sur l'élément intermédiaire, vient en contact vers le bas avec l'élément de réglage (26).
  2. Soupape d'injection de carburant selon la revendication 1, caractérisée en ce que l'élément de butée (38) s'applique contre la face frontale (40) de l'élément de réglage (26).
  3. Soupape d'injection de carburant selon la revendication 1 ou 2, caractérisée en ce que l'élément intermédiaire (32) présente au moins une première rainure (34) dans laquelle est inséré l'élément de butée (38), l'élément de butée (38) faisant saillie au moins en partie hors de la première rainure (34).
  4. Soupape d'injection de carburant selon l'une quelconque des revendications 1 à 3, caractérisée par un ressort de soupape (44) pour solliciter l'élément de réglage (26) dans la direction du siège d'étanchéité (28), le ressort de soupape (44) s'appuyant au niveau d'un côté (46) contre l'élément de butée (38) ou contre l'élément de réglage (26) et au niveau d'un autre côté (48) contre une région de retenue (50) qui est réalisée sur l'élément intermédiaire (32).
  5. Soupape d'injection de carburant selon la revendication 4, caractérisée en ce que la région de retenue (50) présente un élément de retenue (52) qui est introduit dans une deuxième rainure (36) réalisée sur l'élément intermédiaire (32), et qui fait saillie au moins en partie hors de la deuxième rainure (36).
  6. Soupape d'injection de carburant selon l'une quelconque des revendications 1 à 5, caractérisée en ce que l'élément intermédiaire (32) présente, à sa première extrémité (58) qui est opposée à l'élément de réglage (26), une gorge d'écoulement (60), ou présente un alésage d'écoulement central (70) qui débouche dans un alésage transversal (72), ou présente un ou plusieurs alésages d'écoulement s'étendant obliquement.
  7. Soupape d'injection de carburant selon l'une quelconque des revendications 1 à 6, caractérisée en ce que l'élément de butée (38) et/ou l'élément de retenue (52) sont fixés dans leur siège dans la rainure respective (34, 36) au moyen d'un élément de fixation (54, 56).
  8. Soupape d'injection de carburant selon l'une quelconque des revendications 1 à 7, caractérisée en ce que l'actionneur (29) s'appuie avec une région extérieure contre un corps de retenue (31) de la soupape d'injection de carburant (10).
  9. Soupape d'injection de carburant selon l'une quelconque des revendications 1 à 8, caractérisée en ce qu'un ressort (68) est disposé entre l'élément de guidage (24) et l'élément intermédiaire (32).
  10. Soupape d'injection de carburant selon l'une quelconque des revendications 1 à 9, caractérisée en ce que l'élément intermédiaire (32) et l'élément de guidage (24) sont réalisés d'une seule pièce.
EP08774908A 2007-08-10 2008-07-09 Soupape d'injection de carburant pour moteurs à combustion interne Not-in-force EP2185808B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007037824A DE102007037824A1 (de) 2007-08-10 2007-08-10 Kraftstoffeinspritzventil für Brennkraftmaschinen
PCT/EP2008/058902 WO2009021785A1 (fr) 2007-08-10 2008-07-09 Soupape d'injection de carburant pour moteurs à combustion interne

Publications (2)

Publication Number Publication Date
EP2185808A1 EP2185808A1 (fr) 2010-05-19
EP2185808B1 true EP2185808B1 (fr) 2012-01-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP08774908A Not-in-force EP2185808B1 (fr) 2007-08-10 2008-07-09 Soupape d'injection de carburant pour moteurs à combustion interne

Country Status (4)

Country Link
EP (1) EP2185808B1 (fr)
AT (1) ATE542995T1 (fr)
DE (1) DE102007037824A1 (fr)
WO (1) WO2009021785A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009046563A1 (de) * 2009-11-10 2011-05-12 Robert Bosch Gmbh Kraftstoffinjektor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10100422A1 (de) * 2001-01-08 2002-07-11 Bosch Gmbh Robert Magnetventil zur Steuerung eines Einspritzventils einer Brennkraftmaschine
ES2277229T3 (es) 2004-06-30 2007-07-01 C.R.F. Societa Consortile Per Azioni Servovalvula para controlar el inyector de combustible de un motor de combustion interna.
DE102004050992A1 (de) * 2004-10-20 2006-04-27 Robert Bosch Gmbh Magnetventilbetätigter Kraftstoffinjektor mit hydraulischem Überhubanschlag
DE102006027485A1 (de) 2006-06-14 2007-12-20 Robert Bosch Gmbh Kraftstoffeinspritzventil mit Sicherheitssteuerventil

Also Published As

Publication number Publication date
WO2009021785A1 (fr) 2009-02-19
EP2185808A1 (fr) 2010-05-19
ATE542995T1 (de) 2012-02-15
DE102007037824A1 (de) 2009-02-12

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