EP2201240A1 - Injecteur - Google Patents

Injecteur

Info

Publication number
EP2201240A1
EP2201240A1 EP08803438A EP08803438A EP2201240A1 EP 2201240 A1 EP2201240 A1 EP 2201240A1 EP 08803438 A EP08803438 A EP 08803438A EP 08803438 A EP08803438 A EP 08803438A EP 2201240 A1 EP2201240 A1 EP 2201240A1
Authority
EP
European Patent Office
Prior art keywords
control valve
valve element
injector according
injector
component
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.)
Granted
Application number
EP08803438A
Other languages
German (de)
English (en)
Other versions
EP2201240B1 (fr
Inventor
Nadja Eisenmenger
Hans-Christoph Magel
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 EP2201240A1 publication Critical patent/EP2201240A1/fr
Application granted granted Critical
Publication of EP2201240B1 publication Critical patent/EP2201240B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • 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
    • 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
    • F02M63/004—Sliding valves, e.g. spool valves, i.e. whereby the closing member has a sliding movement along a seat for opening and closing
    • 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
    • F02M63/0071—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059 characterised by guiding or centering means in valves including the absence of any guiding means, e.g. "flying arrangements"
    • 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
    • F02M63/0073—Pressure balanced 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
    • F02M63/0077—Valve seat details
    • 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
    • F02M2547/00—Special features for fuel-injection valves actuated by fluid pressure
    • F02M2547/003—Valve inserts containing control chamber and valve piston

Definitions

  • the invention relates to an injector for injecting fuel into a combustion chamber of an internal combustion engine, in particular a common rail injector, according to the preamble of claim 1.
  • a common rail injector with a pressure-balanced control valve in the axial direction is known.
  • the fuel pressure can be influenced within a limited by an injection valve element control chamber.
  • the injection valve element is adjusted between an open position and a closed position, the injection valve element releasing the fuel flow into the combustion chamber of an internal combustion engine in its open position.
  • the control valve has an axially adjustable by means of an electromagnetic actuator, sleeve-shaped control valve member which cooperates with a control valve seat.
  • the control valve seat is formed on a plate member from which extends integrally formed therewith a guide pin in the axial direction and passes through the sleeve-shaped control valve element.
  • a disadvantage of the known injector is that the arranged at the foot of the guide pin control valve seat is difficult to produce due to its poor accessibility.
  • the invention has for its object to provide an injector with a control valve, the control valve seat is easily manufacturable, and avoided in the strength problems, even at low control valve seat diameters.
  • the invention is based on the idea within the sleeve-shaped control valve element to arrange a pressure pin for receiving the fuel pressure acting in the axial direction and to form this pressure pin as a separate component from the component equipped with the control valve seat.
  • the pressure pin serves as a guide element for the sleeve-shaped control valve element or that additionally or alternatively an outer guide for guiding the sleeve-shaped control valve element is provided on its outer periphery.
  • Angular errors can be compensated with such a shaped control valve seat, similar to a ball-shaped control valve seat, but an outer cone as a control valve seat can be manufactured comparatively easily and can be easily measured. Due to the separate formation of pressure pin and the component with the control valve seat, the control valve seat is easily accessible, so that the control valve seat can be manufactured in a simple manner. In addition, the control valve seat and the guide for the sleeve-shaped control valve element can be processed separately due to the arrangement of different components. By combining a designed as an outer cone control valve seat with a separate pressure pin so easy to be manufactured injector is created, which can be formed in a simple manner pressure balanced in the axial direction.
  • the sleeve-shaped ge control valve element has in its the seat facing the end with advantage a high radial stiffness.
  • the control valve seat formed as an outer cone generates centering forces by which the control valve element can be optimally centered to the control valve seat.
  • control valve more precisely the control valve element, as in its closed position in the axial direction pressure-compensated component is formed.
  • This can be realized, for example, in that the sleeve-shaped control valve element is seated with its inner circumference on the control valve designed as an outer cone, so that a linear sealing surface is obtained without pressure step.
  • the outer cone of the control valve seat has an outer cone angle from a value range between approximately 60 ° and approximately 80 °. Under outer cone angle while the angle of the outer cone surface to the longitudinal central axis of the control valve seat (outer cone) is understood.
  • the outer cone angle is selected from a range between about 70 ° and about 75 °.
  • an inner cone is provided on the sleeve element-shaped control valve element which cooperates with the control valve seat designed as an outer cone and which is adjustable in the axial direction.
  • the inner cone angle ie the angle of the inner conical surface and the longitudinal center axis of the inner cone, is greater than the outer cone angle.
  • the maximum extent of the sealing surface which increases due to wear can be limited to a maximum by limiting the end face of the control valve element facing the control valve seat by an annular, perpendicular to the longitudinal extent of the valve sleeve, ie in the radial direction, extending end face. Due to the fact that the maximum size of the sealing surface enlarging due to wear between control valve element and control valve seat is limited, a minimum of surface pressure in the sealing region of the control valve element is guaranteed, which in turn results in ensuring the tightness of the control valve element over the life of the injector.
  • the axial distance between the annular seat line (sealing surface) formed by the inner cone and the radially extending end face of the control valve element is less than 400 ⁇ m, preferably less than 300 ⁇ m, particularly preferably less than 200 microns, is.
  • the maximum frontal, radial extension of the seat line can be limited by wear to a minimum, which even in a long-time in-use injector still to a high surface pressure in Aniaa- area of the sleeve-shaped control valve element leads to the control valve seat.
  • the pressure pin is designed as an inner guide element for the control valve element, that is, the control valve element is guided with its cylindrical inner circumference on the outer circumference of the pressure pin.
  • the pressure pin is fixed to, or integrally with, a component which is axially spaced apart from the component having the control valve seat, for example in a form-fitting manner.
  • this component is a plate on which an electromagnet arrangement of an electromagnetic actuator is supported in the axial direction.
  • the pressure pin preferably passes through this electric motor arrangement in the axial direction.
  • an embodiment of the injector can be realized in which an external guide for the control valve element is provided, the control valve element is thus guided on its outer circumference.
  • the pressure pin is formed as an independent component, which in switched off the internal combustion engine to the the control valve seat having component rests and is supported when pressurized on an axially disposed of this component component.
  • the injector with pressure pin and outer conical control valve seat is an injector with an electromagnetic actuator for actuating the control valve.
  • Fig. 1 is a schematic representation of an injector with a control valve, the sleeve-shaped control ⁇ valve element is penetrated by a separate pressure pin, wherein the control valve element is formed and arranged cooperatively with a formed as an outer cone valve seat and
  • a schematic representation of a section of an alternatively formed injector is shown in FIG. 1 .
  • Fig. 1 designed as a common-rail injector injector 1 for injecting fuel in a combustion chamber of an internal combustion engine of a motor vehicle is shown.
  • a high pressure pump 2 delivers fuel from a reservoir 3 in a high-pressure fuel storage 4 (Rail).
  • the injector 1 is connected via other, not shown, injectors via a supply line 5.
  • a return line 8 a low-pressure region 9 of the injector 1 is connected to the storage container 3. Via the return line 8, a later to be explained control amount of fuel from the injector 1 to the reservoir 3 to flow.
  • an injector body 10 Within an injector body 10 is a control rod 11 of an existing in this embodiment of the control rod 11 and a nozzle needle 12 injection valve element 13 is arranged.
  • the control rod 11 of the injection valve element 13 is guided longitudinally displaceably in a lower portion of the sleeve-shaped component 14.
  • the control rod 11 rests with its lower end face on an upper end side of the nozzle needle 12, the axially displaceable is guided within a nozzle body 18.
  • the nozzle body 18 is screwed by means of a union nut, not shown, with the injector body 10.
  • the low-pressure chamber 15 is connected via a channel 19 with connected to the low pressure region 9 of the injector.
  • the injection valve element 13 has a diameter stage 42 (low pressure stage), whereby a fast closing behavior of the injector 1 is ensured.
  • the nozzle needle 12 has at its tip 20 a closing surface 21 with which the nozzle needle 12, ie the injection valve element 13, can be brought into close contact with an injection valve element seat 22 formed inside the nozzle body 18.
  • a control chamber 26 is limited, via a radially in the sleeve-shaped portion of Component 14 extending inlet throttle 27 is supplied with high-pressure fuel from the pressure chamber 6.
  • the control chamber 26 is above, in the upper, plate-shaped portion of the component 14 arranged drain channel 28 with outlet throttle 29 connected to a valve chamber 30 which is bounded radially outwardly by a sleeve-shaped control valve element 31 of a control valve 32 (servo valve).
  • fuel can flow into the low-pressure region 9 of the injector 1 when the control valve element 31 which can be actuated by an electromagnetic actuator 33 is lifted off its control valve seat 34, which is designed as an outer cone and arranged on the plate-shaped section of the component 14, ie the control valve 32 is open.
  • the flow cross sections of the inlet throttle 27 and the outlet throttle 28 are matched to one another such that when the control valve 32 is open, a net outflow of fuel (control quantity) from the control chamber 26 via the valve chamber 30 into the low pressure region 9 of the injector 1 and from there via the return line 8 takes place in the reservoir 3.
  • the control valve 32 is designed as a pressure balanced in the axial direction in the closed state valve, wherein the control valve member 31 in its upper plane in the drawing level in one piece with an anchor plate 35, which cooperates with a solenoid assembly 36 of the Aktua- 33 is formed.
  • a control closing spring 40 which is supported on a component 41 designed as an injector cover, moves the sleeve-shaped control valve element 31 back onto its outer conical control valve seat 34 on the upper side of the component 14 in the drawing plane.
  • the fuel flowing in through the inlet throttle 27 increases the pressure in the cylinder Control chamber 26 rapidly, whereby the control rod 11 and subsequently the nozzle needle 12, supported by the spring force of a closing spring 38, which is supported on a peripheral collar 39 of the control rod 11, is moved in the direction of the injection valve element seat 22, whereby the Fuel flow from the nozzle hole assembly 23 is interrupted in the combustion chamber.
  • a pressure pin 43 is received, which receives the pressure forces acting in the axial direction within the valve chamber 30 and the valve chamber 30 seals in the axial direction in the plane of the drawing upwards.
  • the pressure pin 43 is supported on the component 41 arranged by the component 14, for which purpose the pressure pin 43 passes through the electromagnet arrangement 36 of the actuator 33 in the axial direction.
  • the pressure pin 43 drops and lies on the top side of the outer control valve seat 34 until the pressure builds up again.
  • a guide plate 44 (outer guide) is provided, which is the Control valve element 31 leads at its outer periphery.
  • the loose pressure pin 43 designed as a separate component has no guiding function, but serves only to absorb pressure forces acting in the axial direction.
  • an axial channel 45 is provided to the fuel flow within the low-pressure region to an armature space 46 and from there via a central, penetrated by the pressure pin 43 opening 51, in which the control closing spring 40 is arranged to the return line eighth to ensure.
  • the control valve element 31 has a radially inner inner cone 47. From this, a seat line 48 (sealing line) is formed on the inner circumference, by means of which the control valve element 31 cooperates with the control valve seat 34. As can be seen from FIG. 2, an inner cone angle OC of the inner cone 47 is greater than an outer cone angle ⁇ of the outer cone-shaped control valve seat 34.
  • Radially to the inner cone 47 includes an end face 49 of the control valve element 31 on the front side.
  • the distance A between the seat line 48 and the annular end surface 50 is less than 200 microns in the embodiment shown.
  • the end face 49 extending perpendicular to the longitudinal central axis L of the control valve seat 34 limits the maximum extent of the seat line 48 that increases due to wear, as a result of which a sufficiently high surface pressure is ensured even after a long period of operation.
  • the pressure pin 43 is used in the embodiment of FIG. 2 as an inner guide for the sleeve-shaped control valve member 31.
  • the control closing spring 40 is based on one of the control valve element 31 and the other at an annular shoulder 50 of the pressure pin 43 and presses it against the serving as a lid member 41st
  • a radially outer chamfered portion 17 adjoins the planar, radially extending end face 49 of the control valve element 31 radially outward.

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)
  • Fuel-Injection Apparatus (AREA)

Abstract

La présente invention concerne un injecteur conçu pour injecter du carburant dans une chambre de combustion d'un moteur à combustion interne, notamment un injecteur à rampe commune. L'injecteur comprend un élément de soupape d'injection (13) qui peut se déplacer entre une position fermée et une position ouverte dans laquelle le flux de carburant est libéré et qui peut être commandé au moyen d'une soupape de commande (32) présentant un élément de soupape de commande (31) en forme de manchon. L'élément de soupape de commande (31) coopère avec un siège de soupape de commande (34) placé sur un composant (14). Selon l'invention, une tige poussoir (43) séparée du composant (14) est entourée par l'élément de soupape de commande (31), et le siège de soupape de commande (34) est conçu sous forme de cône extérieur.
EP08803438A 2007-09-17 2008-09-01 Injecteur Active EP2201240B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200710044356 DE102007044356A1 (de) 2007-09-17 2007-09-17 Injektor
PCT/EP2008/061455 WO2009037097A1 (fr) 2007-09-17 2008-09-01 Injecteur

Publications (2)

Publication Number Publication Date
EP2201240A1 true EP2201240A1 (fr) 2010-06-30
EP2201240B1 EP2201240B1 (fr) 2012-12-19

Family

ID=39938416

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08803438A Active EP2201240B1 (fr) 2007-09-17 2008-09-01 Injecteur

Country Status (3)

Country Link
EP (1) EP2201240B1 (fr)
DE (1) DE102007044356A1 (fr)
WO (1) WO2009037097A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007044356A1 (de) * 2007-09-17 2009-03-19 Robert Bosch Gmbh Injektor
DE102009027932A1 (de) * 2009-07-22 2011-01-27 Robert Bosch Gmbh Kraftstoffinjektor und Kraftstoffeinspritzsystem
DE102009046563A1 (de) * 2009-11-10 2011-05-12 Robert Bosch Gmbh Kraftstoffinjektor
DE102010003202A1 (de) 2010-03-24 2011-09-29 Robert Bosch Gmbh Common-Rail-Injektor mit druckausgeglichenem Schaltventil und zusätzlichem Speichervolumen
DE102011077618A1 (de) 2011-06-16 2012-12-20 Robert Bosch Gmbh Injektor, insbesondere Kraftstoffinjektor für eine Brennkraftmaschine
DE102011078346A1 (de) * 2011-06-29 2013-01-03 Robert Bosch Gmbh Schaltventil, Verfahren zum Herstellen eines Schaltventils und Kraftstoffinjektor mit einem Schaltventil
DE102011078407A1 (de) * 2011-06-30 2013-01-03 Robert Bosch Gmbh Schaltventil zur Steuerung eines Kraftstoffinjektors und Kraftstoffinjektor
DE102011079999A1 (de) 2011-07-28 2013-01-31 Robert Bosch Gmbh Injektor
DE102017207880A1 (de) * 2017-05-10 2018-11-15 Robert Bosch Gmbh Kraftstoffinjektor

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1612403B1 (fr) 2004-06-30 2007-01-10 C.R.F. Società Consortile per Azioni Soupape servo pour controller l'injecteur d'un moteur à combustion interne
DE102006021741A1 (de) * 2006-05-10 2007-11-15 Robert Bosch Gmbh Kraftstoffinjektor mit druckausgeglichenem Steuerventil
DE102007011317A1 (de) * 2007-03-08 2008-09-11 Robert Bosch Gmbh Kraftstoffinjektor mit einer verbesserten Ausführung eines Steuerventils zur Steuerung einer Düsennadel
DE102007022586A1 (de) * 2007-05-14 2008-11-27 Robert Bosch Gmbh Injektor
DE102007035698A1 (de) * 2007-07-30 2009-02-05 Robert Bosch Gmbh Kraftstoffeinspritzventil mit verbesserter Dichtheit am Dichtsitz eines druckausgeglichenen Steuerventils
DE102007044361A1 (de) * 2007-09-17 2009-03-19 Robert Bosch Gmbh Steuerventil für einen Kraftstoffinjektor
DE102007044356A1 (de) * 2007-09-17 2009-03-19 Robert Bosch Gmbh Injektor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009037097A1 *

Also Published As

Publication number Publication date
DE102007044356A1 (de) 2009-03-19
EP2201240B1 (fr) 2012-12-19
WO2009037097A1 (fr) 2009-03-26

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