WO2017012730A1 - Injecteur de carburant et procédé de fabrication d'un injecteur de carburant - Google Patents

Injecteur de carburant et procédé de fabrication d'un injecteur de carburant Download PDF

Info

Publication number
WO2017012730A1
WO2017012730A1 PCT/EP2016/060513 EP2016060513W WO2017012730A1 WO 2017012730 A1 WO2017012730 A1 WO 2017012730A1 EP 2016060513 W EP2016060513 W EP 2016060513W WO 2017012730 A1 WO2017012730 A1 WO 2017012730A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
fuel injector
valve body
shaft
chamber
Prior art date
Application number
PCT/EP2016/060513
Other languages
German (de)
English (en)
Inventor
Michael Krause
Lars Olems
Stephan Amelang
Thomas Nierychlo
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 WO2017012730A1 publication Critical patent/WO2017012730A1/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
    • 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
    • F02M63/007—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 a fuel injector with a control valve. Furthermore, the invention relates to a method for producing a fuel injector.
  • the known fuel injector has a longitudinally displaceably arranged in a pressure chamber nozzle needle.
  • the pressure chamber is fed with fuel under high pressure.
  • the nozzle needle cooperates by its longitudinal movement with a nozzle needle seat and thereby opens and closes at least one injection opening in the combustion chamber.
  • the longitudinal movement of the nozzle needle is controlled by the pressure in a control chamber, wherein the pressure in the control chamber is controlled by a control valve.
  • Control valve comprises an armature sleeve movable by an actuator and a valve seat formed on a valve body.
  • the anchor sleeve acts in
  • valve bolt within the injector housing difficult.
  • Injector be performed.
  • the fatigue strength of the valve pin and guide pin would be reduced.
  • the anchor sleeve can also be guided outside of an extension of the valve body, as known for example from EP-2839143, which is structurally complex and also requires additional space.
  • a valve pin is required when the control valve should be balanced.
  • an inner and outer guide of the anchor sleeve there is the disadvantage of a static overdetermination.
  • the control valve in this embodiment is very sensitive to tolerances and therefore susceptible to wear.
  • valve pin can also be "floating", ie freely or undefined mounted, but this can lead to wear and malfunction of the control valve.
  • control valve of the fuel injector according to the invention is more robust to tolerances, less susceptible to wear, has a higher fatigue strength and thus has a longer life.
  • Combustion chamber of an internal combustion engine one in a pressure chamber
  • the pressure chamber is fed with fuel under high pressure.
  • the nozzle needle cooperates by its longitudinal movement with a nozzle needle seat and thereby opens and closes at least one injection opening in the combustion chamber.
  • the control valve comprises an armature sleeve movable by an actuator and a valve seat formed on a valve body.
  • the anchor sleeve cooperates longitudinally with the valve seat to open and close a hydraulic connection from the control chamber to a low pressure space.
  • Anchor sleeve is formed a guide bore.
  • the anchor sleeve is guided radially by a valve pin arranged in the guide bore.
  • a shaft is formed on the valve pin, wherein the shaft is pressed into the valve body.
  • valve pin is fixed to the shaft in the valve body. Due to the interference fit of the valve body is very stiff with the shaft of the
  • Anchor sleeve and valve seat can thus be performed approximately coaxially, since only the tolerances of the three components valve pin, anchor sleeve and
  • Valve body affect the positioning of the anchor sleeve and valve seat to each other.
  • the positioning of the anchor sleeve to valve seat is particularly accurate, whereby the wear of the control valve is minimized and the service life is increased.
  • when closed is particularly accurate, whereby the wear of the control valve is minimized and the service life is increased.
  • Control valve minimizes or prevents leakage between anchor sleeve and valve seat. Furthermore, this embodiment does not weaken the strength of the valve pin.
  • a stop is formed on the valve body and a bolt shoulder is formed on the shaft, the bolt shoulder cooperating with the stop in the axial direction.
  • the valve pin is biased with its bolt shoulder against the stop.
  • the biasing force for example, by the interference fit between the shaft and the Valve body or by a force acting on the valve pin spring.
  • a bias voltage is applied by the hydraulic forces acting on an end face of the shaft.
  • the shaft has a positioning region and a stop region, wherein the positioning region is radially mounted in the valve body.
  • the positioning region does not have to be pressed into the valve body, but can, for example, also have a very small gap to the valve body, similar to a plain bearing.
  • the positioning region is pressed into the valve body.
  • the anchor sleeve is positioned very accurately to the valve seat.
  • the stop area has a larger diameter than the positioning area, so that between the
  • Stop area and the positioning a bolt shoulder is formed.
  • the bolt shoulder cooperates with a stop formed on the valve body.
  • the valve pin is fixed in a simple manner in the axial direction to the valve body.
  • the bolt shoulder is biased against the stop.
  • an unwanted axial movement of the valve pin is particularly effectively prevented.
  • the biasing force for example, as previously described, be applied by means of interference fit or spring.
  • the at least one recess may be formed as an outlet throttle. However, if the recess is not formed as an outlet throttle, then the flow cross-section of at least one recess be greater than the flow cross-section of the outlet throttle arranged elsewhere.
  • two or three recesses are on the shaft
  • the recesses are designed as a two-fold or three-fold. That is, each recess is flat on the plane
  • the valve body is braced on the side facing away from the control valve with a throttle plate, wherein in the throttle plate, an outlet throttle is formed.
  • the valve body is formed quasi two-piece, as a valve body and throttle plate. The assembly of the shaft within the valve body can be carried out comparatively easily.
  • the outlet throttle is thus made independently of the valve pin, but it is separate, namely formed in the throttle plate.
  • a condensation space is limited by the shaft, the valve body and the throttle plate.
  • the outlet throttle connects the control room with the condensation room.
  • the condensation chamber has a flow cross-section which is significantly larger than that of the outlet throttle, so that here there is a deliberate delay in the outflowing flow
  • Condensation in the condensation space is advantageously not directly on the limiting walls, so that there is no cavitation erosion at all.
  • a guide surface is formed on the valve pin, which is arranged radially opposite the guide bore.
  • the sealing gap between the guide surface and guide bore is very relevant in terms of tightness and wear of the control valve and in terms of
  • both the guide surface and the guide bore are particularly narrow
  • the guide surface on an opposite the adjacent areas of the valve pin enlarged diameter.
  • the guide surface can be very easily processed, for example, ground.
  • the valve pin can thereby be arranged within the valve body in such a way that sufficient fuel can flow out between the valve pin and the valve body to the valve seat, in particular if the control valve is force-balanced.
  • the diameters of the guide bore and the valve seat are the same size. This is a pressure or force balanced
  • Control valve in the present invention requires a control valve with a valve pin.
  • the actuator is an electromagnetic actuator.
  • the invention further relates to a process for the preparation of a
  • the fuel injector has a control valve, wherein the control valve comprises an armature sleeve movable by an actuator, a valve pin and a valve seat formed on a valve body.
  • the anchor sleeve acts in
  • the production method comprises the following steps:
  • guide bore and valve seat are ground only in the preassembled state, so that the position of these two functions to each other, in particular the coaxiality, is made very accurately.
  • the grinding of the valve seat and the grinding of the guide surface take place in one clamping.
  • control valve can thus be manufactured very inexpensively.
  • Fig.l shows schematically a longitudinal section through a fuel injector, wherein only the essential areas are shown.
  • FIG. 2 shows a further embodiment of the fuel injector in the region of a control valve in longitudinal section, wherein only the essential areas are shown.
  • 3 shows a further embodiment of the fuel injector in the region of the control valve in longitudinal section, wherein only the essential areas are shown.
  • FIG. 4a shows the section A-A of Figure 3.
  • 4b shows the section B-B of Figure 3.
  • FIG. 5 shows an alternative exemplary embodiment to FIG. 4a.
  • Fig.l shows schematically a longitudinal section through a fuel injector 1 for injecting fuel into a combustion chamber of an internal combustion engine, wherein only the essential areas are shown.
  • the fuel injector 1 comprises a housing 40, which in the illustrated embodiment has substantially three components clamped together: a holding body 42, a
  • Valve body 9 and adjacent to the combustion chamber nozzle body 43 are braced in the longitudinal direction by a nozzle lock nut 44 media-tight.
  • a pressure chamber 6 is formed, in which a nozzle needle 3 is arranged longitudinally displaceable.
  • the pressure chamber 6 is formed by a high-pressure inlet 41 formed in the housing 40 with fuel under high pressure from a fuel source, not shown, for example a
  • a nozzle needle seat 7 is formed on the nozzle body 43. Furthermore, at least one injection opening 8 is formed in the nozzle body 43, which opens into the combustion chamber.
  • the nozzle needle 3 cooperates by their longitudinal movement with the nozzle needle seat 7 and thereby opens and closes the at least one injection opening 8.
  • Nozzle spring 45 engages a shoulder of the nozzle needle 3 and pushes the Nozzle needle 3 thereby against the nozzle needle seat 7. At the opposite end of the shoulder, the nozzle spring 45 cooperates with a sleeve 46 and pushes it against the valve body 9.
  • the nozzle needle 3 is longitudinally movably arranged in the sleeve 46.
  • the combustion chamber opposite end of the nozzle needle 3, the sleeve 46 and the valve body 9 define a control chamber 10.
  • the control chamber 10 is connected by an opening formed in the sleeve 46 inlet throttle 15 to the pressure chamber 6.
  • the longitudinal movement of the nozzle needle 3 is controlled by the pressure in the control chamber 10, wherein the pressure in the control chamber 10 in turn is controlled by a control valve 5 arranged in the housing 40.
  • the control valve 5 comprises an anchor sleeve 53, a valve seat 12, a valve pin 51 and a closing spring 4.
  • the valve seat 12 is formed on the valve body 9.
  • a formed on the anchor sleeve 53 seat 50 cooperates with the valve seat 12 and thereby opens and closes a hydraulic connection from the control chamber 10 to a trained in the housing 40 low-pressure space 30.
  • the hydraulic connection comprises a in
  • Valve pin 51 formed recess in the form of a discharge throttle 16.
  • the anchor sleeve 53 has a continuous guide bore 53a and is guided in this formed by a valve pin 51 on the guide surface 52.
  • the anchor sleeve 53 is arranged surrounding the valve pin 51 and the guide surface 52 radially and is clamped by a valve disposed in the low-pressure chamber 30 valve spring 4 against the valve seat 12.
  • the guide bore 53a and the valve seat 12 - in the context of manufacturing tolerances - the same diameter, so that the anchor sleeve 53 is balanced in the closed state, ie when resting against the valve seat 12, with respect to the hydraulic forces; the hydraulic
  • the control valve 5 can be actuated by an actuator 2 arranged in the housing 40, which in the exemplary embodiment of FIG Actuator is executed.
  • the actuator 2 arranged in the housing 40, which in the exemplary embodiment of FIG Actuator is executed.
  • the actuator 2 arranged in the housing 40, which in the exemplary embodiment of FIG Actuator is executed.
  • the actuator 2 arranged in the housing 40, which in the exemplary embodiment of FIG Actuator is executed.
  • the actuator 2 arranged in the housing 40, which in the exemplary embodiment of FIG Actuator is executed.
  • the actuator 2 for example, be designed as a piezoelectric actuator.
  • the actuator 2 is clamped by a lock nut 47 against a shoulder 42 a of the holding body 42 and thus fixed in the housing 40.
  • the actuator 2 acts on the anchor sleeve 53 in the opening direction of the control valve fifth
  • valve pin 51 is fixedly connected to the valve body 9.
  • the valve pin 51 is pressed with a shaft 51a in a formed in the valve body 9 receiving bore 9a.
  • Nozzle needle 3 limit the control chamber 10th
  • the receiving bore 9a tapers abruptly, so that the shaft 51a of the
  • Valve pin 51 by acting on the end face 510 hydraulic
  • a bolt shoulder 51 c is formed at the transition or heel of the shaft 51 a with a comparatively large diameter to the other valve pin 51 with a comparatively small diameter. This bolt shoulder 51c cooperates with the stopper 9c in the axial direction when the shaft 51a is pressed against the stopper 9c.
  • the outlet throttle 16 is formed in the shaft 51 a of the valve pin 51.
  • the control chamber 10 is thus limited in this embodiment of the shaft 51 a, the receiving bore 9 a, the sleeve 46 and the nozzle needle 3.
  • one or more recesses may be provided, for example as a two-flattened or three-fluted one.
  • Recesses may also have the function of a throttle point, or else designed as an unthrottled flow cross-section.
  • annular gap 21 is formed between the valve pin 51 and the valve body 9.
  • the annular gap 21 has a larger flow cross-section than the outlet throttle 16, so that it does not throttle when the control valve 5 is open.
  • the guide between the guide bore 53a of the anchor sleeve 53 and the guide surface 52 of the valve pin 51, hereinafter referred to as sealing gap 54, is chosen so narrow and long that the annular gap 21 is characterized very well sealed against the low-pressure region of the fuel injector 1 and only one very small amount of leakage through the sealing gap 54 flows.
  • the outlet throttle 16 is downstream of a diffuser 16 a downstream.
  • flow restrictor 16 and diffuser 16a are designed as a channel with different diameters in shaft 51a, wherein the diameter of diffuser 16a is larger than the diameter of diffuser 16a
  • FIG. 2 shows a further embodiment of the fuel injector 1 in the region of the control valve 5 in longitudinal section, wherein only the essential areas are shown.
  • valve body 9 and the sleeve 46 are made in one piece and referred to as a valve body 9.
  • the control chamber 10 is consequently bounded by the valve body 9, by the shaft 51 a of the valve pin 51 and by the nozzle needle 3.
  • the nozzle needle 3 is guided radially at its upper end in a valve body 9 formed in the nozzle needle guide 13.
  • valve body 9 the receiving bore 9a tapers abruptly, so that the bolt shoulder 51c of the valve pin 51 is pressed from the direction of the control chamber 10 against the stop 9c.
  • the shaft 51a is pressed into the receiving bore 9a.
  • the valve pin 51 in the region of the sealing gap 54 on a diameter-expanded region on which the guide surface 52 is formed.
  • Valve clamping screw 60 clamped against a formed on the nozzle body 43 shoulder.
  • alternative clamping concepts can also be used, for example with a nozzle retaining nut - even with the interposition of other components - as in Fig.l.
  • the valve body 9 can be braced in other embodiments against the holding body 42.
  • a condensation space 61 is arranged downstream of the outlet throttle 16 and upstream of the annular gap 21.
  • the condensation space 61 is formed between the valve body 9, the valve pin 51 and the stem 51a.
  • Condensation chamber 61 is comparatively large, so that it is open with a control valve 5 to a pressure increase and thus to a targeted
  • FIG 3 shows a further embodiment of the fuel injector 1 in the region of the control valve 5 in longitudinal section, wherein only the essential areas are shown.
  • valve body 9 is made in two parts and referred to as valve body 9 and throttle body 11.
  • the valve body 9 is facing the anchor sleeve 53 and the throttle body 11 of the nozzle needle 3.
  • the outlet throttle 16 is formed in this embodiment in the throttle body 11.
  • the annular gap 21 is designed so that on the one hand a
  • the shaft 51a is subdivided into two areas in this embodiment: a positioning area 511 adjoining the guide area 52 and an adjacent thereto and into the
  • Condensation space 61 projecting stop area 512.
  • the bolt shoulder 51c is arranged.
  • the condensation chamber 61 is limited in this embodiment by the shaft 51a - more precisely, the stopper area 512 -, the valve body 9 and the throttle plate 11.
  • the positioning region 511 is arranged in the annular gap 21.
  • the positioning region 511 is radially guided by the valve body 9 in such a way that in turn the anchor sleeve 53 is guided by the guide region 52 approximately coaxially with the valve seat 12.
  • the valve pin 51 has at least one recess 51b on the shaft 51a, both on the positioning region 511 and on the stop region 512, so that fuel can flow from the outlet throttle 16 or from the condensation chamber 61 to the valve seat 12.
  • the at least one recess 51b is shown in more detail in sections A-A and B-B of FIG.
  • FIG. 4a shows the section AA, ie the section in the positioning region 511 of the shaft 51a of the valve pin 51.
  • three recesses 51b are formed on the valve pin 51 and on the shaft 51a uniformly distributed over the circumference, wherein the recesses 51b in section have the shape of a circle segment.
  • the cross sections of the recesses 51b have a significant proportion of the entire flow cross section.
  • any numbers of recesses 51b and any shapes of the recesses are possible.
  • the recesses 51b may be configured as a two-flats or three-flats.
  • FIG. 5 shows, by way of example, the embodiment in the form of a two-part plan view: two recesses 51b are each planar on the lateral surface of the valve spigot 51 in the region of Annular gaps 21 and ground on the positioning 511 and
  • FIG. 4b shows the section BB of FIG. 3, that is to say the section in the abutment region 512 of the shaft 51a of the valve pin 51.
  • the section BB is designed according to the section AA of FIG. 4a, ie with the same number of recesses 51b, wherein the recesses 51b have the same shape.
  • the recesses 51b may also be designed on the stop area 512 as a two-fold or three-fold or any other way.
  • the operation of the fuel injector 1 is as follows:
  • the pressure chamber 6 is hydraulically in constant over the high-pressure inlet 41
  • a high pressure accumulator such as a common rail or a high pressure pump.
  • the nozzle needle 3 is lifted off the nozzle needle seat 7. The movement of the nozzle needle 3 is controlled by the control valve 5.
  • the control valve 5 is controlled by the actuator 2 and controls the pressure in the control chamber 10. If in the control chamber 10 high pressure, so this presses the nozzle needle 3 against the force of the nozzle spring 45 and counter to acting in the pressure chamber 6 on the nozzle needle 3 resulting hydraulic Force against the nozzle needle seat 7.
  • control valve 5 is controlled by the actuator 2 so that the
  • Anchor sleeve 53 lifts off the valve seat 12. This will increase the pressure in the control room
  • the control of the actuator 2 is terminated, so that the anchor sleeve 53 is pressed with its seat 50 of the valve spring 4 again against the valve seat 12 and thus the outlet throttle 16 is closed.
  • the pressure in the control chamber 10 is increased by the inflow via the inlet throttle 15 so far that this causes 45 together with the force of the nozzle spring closing the nozzle needle 3.
  • the anchor sleeve 53 is aligned by the valve pin 51 very precisely to the valve seat 12, in particular coaxially positioned. As a result, the wear on the valve seat 12 and the seat surface 50 of the anchor sleeve 53 is minimized. At the same time a leakage between the valve seat 12 and seat 50 is minimized or prevented when the control valve 5 is closed.
  • the precise alignment or coaxial positioning of the anchor sleeve 53 to the valve seat 12 is accompanied by a precise alignment or coaxial positioning of the anchor sleeve 53 to the valve pin 51. This also minimizes the wear between the anchor sleeve 53 and the valve pin 51. As a result, the life of the entire control valve 5 and the entire fuel injector 1 increases.
  • a particularly exact, in particular coaxial positioning of the anchor sleeve 53 to the valve seat 12 is effected by the method according to the invention, in which the valve pin 51 is first pressed into the valve body 9. Subsequently, the valve seat 12 formed on the valve body 9 and the valve pin 51 formed on the guide surface 52 are ground, preferably in a single clamping. Thus, a very good coaxiality of valve seat 12 to the guide surface 52 is achieved in the manufacturing process. The anchor sleeve 53 is thus best performed on the valve pin 51 and centered to the valve seat 12.

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

L'invention concerne un injecteur de carburant (1) servant à l'injection de carburant dans une chambre de combustion d'un moteur à combustion interne et comportant une aiguille d'injecteur (3) disposée de manière longitudinalement coulissante dans une chambre de pression (6). La chambre de pression (6) est alimentée en carburant sous haute pression. L'aiguille d'injecteur (3) coopère par son déplacement longitudinal avec un siège (7) d'aiguille d'injecteur, et ouvre ou ferme ainsi au moins un orifice d'injection (8) dans la chambre de combustion, le déplacement longitudinal de l'aiguille d'injecteur (3) étant commandé par la pression dans une chambre de commande (10). Une soupape de commande (5) régule la pression dans la chambre de commande (10) et comprend une douille d'induit (53) déplaçable par un actionneur (2) et un siège de soupape (12) réalisé au niveau d'un corps de soupape (9). La douille d'induit (53) coopère en direction longitudinale avec le siège de soupape (12) pour ouvrir et fermer une communication hydraulique allant de la chambre de commande (10) à une chambre basse pression (30). Un alésage de guidage (53a) est formé dans la douille d'induit (53), la douille d'induit (53) étant guidée radialement par une broche de soupape (51) agencée dans l'alésage de guidage (53a). Une tige (51a) est agencée au niveau de la broche de soupape (51), la tige étant fixée dans le corps de soupape (9).
PCT/EP2016/060513 2015-07-21 2016-05-11 Injecteur de carburant et procédé de fabrication d'un injecteur de carburant WO2017012730A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015213739.2 2015-07-21
DE102015213739.2A DE102015213739A1 (de) 2015-07-21 2015-07-21 Kraftstoffinjektor und Verfahren zur Herstellung eines Kraftstoffinjektors

Publications (1)

Publication Number Publication Date
WO2017012730A1 true WO2017012730A1 (fr) 2017-01-26

Family

ID=55953169

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2016/060513 WO2017012730A1 (fr) 2015-07-21 2016-05-11 Injecteur de carburant et procédé de fabrication d'un injecteur de carburant

Country Status (2)

Country Link
DE (1) DE102015213739A1 (fr)
WO (1) WO2017012730A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114233546A (zh) * 2021-11-26 2022-03-25 思达耐精密机电（常熟）有限公司 一种高压共轨泵用轨压控制阀
US12053024B2 (en) 2018-11-05 2024-08-06 Juul Labs, Inc. Cartridges for vaporizer devices

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007006946A1 (de) * 2007-02-13 2008-08-14 Robert Bosch Gmbh Injektor zum Einspritzen von Kraftstoff in Brennräume von Brennkraftmaschinen
DE102007027486A1 (de) * 2007-06-14 2008-12-18 Robert Bosch Gmbh Zentrierhilfe für Schaltventile
WO2008155275A1 (fr) * 2007-06-21 2008-12-24 Robert Bosch Gmbh Soupape de commande pour une soupape d'injection de carburant
DE102008000926A1 (de) * 2008-04-02 2009-10-08 Robert Bosch Gmbh Kraftstoffinjektor mit Magnetventil
EP2524132A1 (fr) 2010-01-12 2012-11-21 Robert Bosch GmbH Injecteur de carburant
EP2839143A1 (fr) 2012-04-16 2015-02-25 Robert Bosch GmbH Ensemble magnétique, destiné notamment à une électrovanne d'injecteur de carburant

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006046898A1 (de) * 2006-10-04 2008-04-10 Robert Bosch Gmbh Drosselplatte für Magnetventil

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007006946A1 (de) * 2007-02-13 2008-08-14 Robert Bosch Gmbh Injektor zum Einspritzen von Kraftstoff in Brennräume von Brennkraftmaschinen
DE102007027486A1 (de) * 2007-06-14 2008-12-18 Robert Bosch Gmbh Zentrierhilfe für Schaltventile
WO2008155275A1 (fr) * 2007-06-21 2008-12-24 Robert Bosch Gmbh Soupape de commande pour une soupape d'injection de carburant
DE102008000926A1 (de) * 2008-04-02 2009-10-08 Robert Bosch Gmbh Kraftstoffinjektor mit Magnetventil
EP2524132A1 (fr) 2010-01-12 2012-11-21 Robert Bosch GmbH Injecteur de carburant
EP2839143A1 (fr) 2012-04-16 2015-02-25 Robert Bosch GmbH Ensemble magnétique, destiné notamment à une électrovanne d'injecteur de carburant

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12053024B2 (en) 2018-11-05 2024-08-06 Juul Labs, Inc. Cartridges for vaporizer devices
CN114233546A (zh) * 2021-11-26 2022-03-25 思达耐精密机电（常熟）有限公司 一种高压共轨泵用轨压控制阀

Also Published As

Publication number Publication date
DE102015213739A1 (de) 2017-01-26

Similar Documents

Publication Publication Date Title
EP1831537B1 (fr) Injecteur de systeme d'injection de carburant d'un moteur a combustion interne
EP2470771B1 (fr) Injecteur de carburant
WO2012163759A1 (fr) Ensemble buse pour un injecteur de carburant et injecteur de carburant
WO2012123130A1 (fr) Dispositif formant soupape permettant de coupler ou de distribuer un fluide
EP2294309B1 (fr) Injecteur de carburant
EP1640604A1 (fr) Servovalve et soupape d'injection
WO2014000961A1 (fr) Injecteur de carburant à actionneur magnétique
WO2009037095A1 (fr) Soupape de commande pour injecteur de carburant
WO2017012730A1 (fr) Injecteur de carburant et procédé de fabrication d'un injecteur de carburant
DE102014217441A1 (de) Elektromagnetisch betätigbares Proportionalventil
DE102015226070A1 (de) Kraftstoffinjektor
WO2011042296A1 (fr) Soupape d'injection de carburant et sa fabrication
EP3380715B1 (fr) Injecteur de carburant
WO2005040598A1 (fr) Soupape pour commander une liaison dans un systeme de liquide haute pression, notamment un dispositif d'injection de carburant pour un moteur a combustion interne
EP2798192B1 (fr) Injecteur de carburant pour moteur à combustion
EP3365551B1 (fr) Soupape d'admission à commande électromagnétique et pompe haute pression munie d'une soupape d'admission
EP3387247B1 (fr) Soupape d'admission à commande électromagnétique et pompe haute pression munie d'une soupape d'admission
WO2019233662A1 (fr) Soupape d'aspiration à commande électromagnétique et pompe à carburant haute pression
EP2957760B1 (fr) Ensemble de buses pour un injecteur de carburant et injecteur de carburant
WO2017050463A1 (fr) Soupape d'admission à commande électromagnétique et pompe haute pression munie d'une soupape d'admission
DE102007018005A1 (de) Injektor
WO2016134930A1 (fr) Soupape de régulation de pression compensé par pression partielle pour un accumulateur haute pression
EP3098434B1 (fr) Systeme d'injection de carburant
DE102014201850A1 (de) Düsenbaugruppe für einen Kraftstoffinjektor sowie Kraftstoffinjektor
DE102017201803A1 (de) Elektromagnetisch betätigbares Einlassventil und Hochdruckpumpe mit Einlassventil

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16721440

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16721440

Country of ref document: EP

Kind code of ref document: A1