EP3523533A1 - Procédé de fabrication d'une calotte dans une aiguille d'injecteur d'une soupape - Google Patents

Procédé de fabrication d'une calotte dans une aiguille d'injecteur d'une soupape

Info

Publication number
EP3523533A1
EP3523533A1 EP17769102.9A EP17769102A EP3523533A1 EP 3523533 A1 EP3523533 A1 EP 3523533A1 EP 17769102 A EP17769102 A EP 17769102A EP 3523533 A1 EP3523533 A1 EP 3523533A1
Authority
EP
European Patent Office
Prior art keywords
valve
needle
sealing ball
valve needle
producing
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
EP17769102.9A
Other languages
German (de)
English (en)
Other versions
EP3523533B1 (fr
Inventor
Ronald Pott
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.)
Volkswagen AG
Original Assignee
Volkswagen AG
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 Volkswagen AG filed Critical Volkswagen AG
Publication of EP3523533A1 publication Critical patent/EP3523533A1/fr
Application granted granted Critical
Publication of EP3523533B1 publication Critical patent/EP3523533B1/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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating 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
    • 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
    • F02M61/161—Means for adjusting injection-valve lift
    • 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
    • F02M63/0033—Lift valves, i.e. having a valve member that moves perpendicularly to the plane of the valve seat
    • F02M63/0036—Lift valves, i.e. having a valve member that moves perpendicularly to the plane of the valve seat with spherical or partly spherical shaped valve member ends
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8053—Fuel injection apparatus manufacture, repair or assembly involving mechanical deformation of the apparatus or parts thereof
    • 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
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8061—Fuel injection apparatus manufacture, repair or assembly involving press-fit, i.e. interference or friction fit
    • 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
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8092—Fuel injection apparatus manufacture, repair or assembly adjusting or calibration
    • 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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/0603—Injectors peculiar thereto with means directly operating the valve needle using piezoelectric or magnetostrictive operating 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
    • 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

Definitions

  • the invention relates to a method for producing a dome in a valve needle of a valve according to the preamble of claim i.
  • Valves with valve pins are used in a variety of applications.
  • High-pressure control valves formed as for example for fuel supply in
  • Valve seat, a sealing ball, a valve needle and a needle guide of such a valve high accuracy requirements are made.
  • a precise guidance of the sealing ball in the valve seat is technically demanding. Due to production-related tolerances, an exact centric positioning in the valve seat is not possible in practice. In a slightly eccentric position of the sealing ball, however, it comes to a radial
  • a tip of a plunger element for a pressure control valve before mounting the valve with a recess for contacting with a valve ball.
  • the depression has two regions with different curvatures arranged concentrically around the center axis of the tappet element: In a first inner region, the valve ball is movable in the radial direction, while in a second outer region the valve ball is movable in the radial and in the axial direction.
  • no axial effects are effective, so that the noise behavior is improved.
  • Valve seat provided.
  • Object of the present invention is to reduce acoustic abnormalities of a valve with a valve needle.
  • the valve has a valve seat, a sealing ball, a needle guide and the valve needle with a needle tip.
  • a space between the valve seat and the sealing ball forms a valve gap and the needle guide supports the valve needle axially movable.
  • the sealing ball and the valve needle in particular also the valve seat and the needle guide, are provided. It is a dome for contacting the sealing ball generated in the needle tip.
  • the dome is formed in that at least partially the dome is impressed by a force of the sealing ball, in particular an actively excited or applied force of the sealing ball.
  • the dome is in particular a hollow-shaped or dome-shaped depression.
  • the valve seat is preferably conical.
  • Valve seat, sealing ball, needle guide and valve needle are components of the valve.
  • the valve may include other components.
  • the valve may have an electromechanical actuator for moving the valve needle.
  • the electromechanical actuator comprises in a preferred embodiment an armature and a pole core.
  • the pole core may be a valve body or a part of a valve body. At least partial embossing may be a final embossing. Particularly preferably, the calotte is completely embossed and / or produced by the sealing ball, in particular in one or more preliminary steps.
  • the force is in particular no force due to use of the valve, for example due to wear during operation of the valve.
  • the force is greater than the action of forces occurring during operation, in particular intended or normal operation, the valve.
  • the needle tip, in particular the calotte can be pre-processed.
  • embossing may include deepening a pre-machined recess.
  • the pre-machined recess may be spherical cap.
  • the pre-machined recess has a smaller radius of curvature than the sealing ball.
  • the valve seat, the sealing ball, the valve needle and the needle guide are assembled before the calotte is at least partially impressed, in favorable progression even before the calotte is produced.
  • the invention at least partially, preferably full embossing of the dome - and optionally also the generation of the dome - takes place in the assembled state of the components influencing the accuracy in the valve. In this way, the contact, the guide, the positioning of the sealing ball is individually centered in the valve, so that radial
  • the force is applied during embossing by the sealing ball is excited to vibrate between the valve seat and the needle tip of the valve needle.
  • a resonance excitation can be used with little external effort.
  • the force is applied by the sealing ball and the needle tip of the valve needle are pressed against each other.
  • the sealing ball can be fixed and the
  • Valve needle moves.
  • a precise relative position of sealing ball and valve needle for embossing can be achieved.
  • Valve needle in the needle guide and the sealing ball between the valve seat and valve needle to be added In this way, the relative position is advantageously used as in the mounted state of the valve.
  • valve is assembled so far that an electromechanical actuator of the valve for movement of the valve needle is in operative connection with the valve needle. It is then using the
  • the electromechanical actuator applied the force.
  • the electromechanical actuator can be driven to oscillate in order to cause a vibration excitation of the sealing ball.
  • the embossed depth of the dome and / or a residual air gap between an armature and a pole core of the valve after embossing is checked in the inventive method, the embossed depth of the dome and / or a residual air gap between an armature and a pole core of the valve after embossing. If the embossed depth is not yet equal to the intended depth and / or the residual air gap still greater than the intended value, the embossing is repeated in one or more further steps until the intended depth is reached and / or until the residual air gap provided Value. In this way, a high precision of the embossing process is ensured.
  • a valve characteristic can be determined in the method according to the invention after embossing.
  • the specific valve characteristic can with a
  • Target characteristic are compared. As a function of the comparison result, the embossing aborted or continued in one or more advanced steps. In this way, a valve with a desired opening behavior of the valve gap can be obtained.
  • valve needle against rotation in the needle guide by means of positive locking and / or force fit.
  • azimuthal position of valve needle and sealing ball is fixed to each other during the embossing process, so that the embossing can be done precisely.
  • Figure 1 is a flow chart of a preferred embodiment of the invention
  • Figure 2 is a schematic representation of a sealing ball touching needle tip of a valve needle in two partial images A and B before and after the
  • Figure 3 arranged components of an embodiment of a valve, with which a preferred embodiment of the inventive method for producing a dome is performed, and
  • FIG. 1 is a flow chart of a preferred embodiment of the method according to the invention for producing a dome in a valve needle of a valve.
  • the valve is preferably a high-pressure control valve for a fuel system in an internal combustion engine.
  • the components valve seat, sealing ball, needle valve needle needle guide and other components of the valve, in particular for the electromechanical actuator, are provided in a step 10.
  • the valve is mounted in a step 12 so far that the
  • valve needle in the needle guide can move axially.
  • the dome is embossed by means of a force effect of the sealing ball, in particular fininge religiongt.
  • the sealing ball is excited to vibrate with the intention of embossing such that the sealing ball exerts the force on the needle point.
  • sealing ball has a greater hardness than the valve seat and this in turn has a greater hardness than the needle tip.
  • the sealing ball on the needle tip is no longer on an annular circle line (ideal situation before embossing) but on an annular circle surface. It is not necessary for the said ring circle surface to be located exactly centrically on the needle tip and / or to have the same width everywhere.
  • Embodiment prevents the valve needle from rotating about its axis, so that the individually mating annular surface does not rotate under the sealing ball,
  • the effective length of the valve needle decreases.
  • this means for the assembled valve that also a residual air gap between an armature and a pole core, which simultaneously represents a valve body, reduced in an electromechanical actuator of the valve in a preferred embodiment.
  • the anchor When making the dome, make sure that the residual air gap is not negligible. Above all, the anchor must not hit the pole core so that no leaks occur between the valve seat and the sealing ball and the armature is not fixed to the pole core by magnetic forces a difficult to control or controllable state arises.
  • the residual air gap with fully closed valve directly determines the slope of the electro-hydraulic
  • valve characteristic and the electronic control parameters Therefore, the residual air gap or the valve characteristic must be taken into account during the stamping process and checked. Consequently, in the sequence shown in Figure 1 of the preferred embodiment of The method according to the invention determines, in a step 18, the valve characteristic obtained after embossing in step 14. If the valve characteristic curve is flatter than a desired characteristic curve, the embossing step is suitably timed as long as it is repeated (step 18) until the actual characteristic curve matches the desired characteristic curve.
  • valve is then completed in a step 20 in the illustrated embodiment.
  • FIG. 2 schematically illustrates an enlarged needle tip of a valve needle touching a sealing ball in two partial images A and B before and after embossing according to the invention, in particular in the preferred embodiment as described with reference to FIG.
  • the partial image A the situation is shown how the sealing ball 32 and the needle tip 40 of the valve needle 28 contact each other in an annular circle contact 42:
  • a depression in the form of a cap 26 is preprocessed in the needle tip 40.
  • the radius of curvature of the cap 26 is significantly smaller than the radius of curvature of the sealing ball 32.
  • the width of a residual air gap between the pole core and armature of the electromechanical actuator of the valve is greater than a desired width.
  • the electromechanical actuator of the valve is operated with a harmonic alternating current without a liquid, for example fuel, being in the valve.
  • the frequency of the alternating current is chosen such that the valve needle contacting the spring-loaded armature with the valve needle into mechanical vibrations, whereby maximum forces can be generated in the axial direction. Due to the described different hardnesses of the components involved, the sealing ball imprints into the calotte, at the same time compensating for any desaxation. In this way, the ring circle contact 42 of the partial image A becomes an annular surface contact 44, as shown in the partial image B. In the two partial images, the same components are provided with the same reference numerals.
  • the dome is coined in several steps: In a stamping step, only a partial deformation is made. Subsequently, the current characteristic curve of the partially refurbished valve is determined. As long as the current actual characteristic does not yet match the desired characteristic in the desired precision, the embossing is repeated with a further partial deformation. When desired sufficiently precise match between the actual and Soli characteristic curve embossing is terminated. In this manner of embossing the dome according to the invention in the assembly, a dome with optimized, preferably optimal lateral guidance of the sealing ball is obtained, so that acoustic abnormalities are reduced, preferably avoided.
  • FIG. 3 shows arranged components of an embodiment of a valve 24 with which a preferred embodiment of the method according to the invention for producing a calotte 26 is carried out.
  • a sealing ball 32 forms with a valve seat 30 a valve gap 38 upstream of a valve outlet 46. To close the valve, the sealing ball 32 by means of the needle guide 34 axially mounted valve needle 28 against the valve seat 30 in
  • Axial direction 38 is pressed.
  • the movement is effected with the aid of an electromechanical actuator:
  • a spring-loaded armature 48 which contacts the valve needle 28 is present in the valve 24, said armature being displaceable in the axial direction 38 by means of the magnetic action of a coil 52 in a pole core 50.
  • the armature 48 is selectively displaced within the valve 24 by an AC voltage across a magnetic coil in its mechanical resonance oscillation.
  • Magnetic coil can be the coil 52, but it can also be used as an alternative to another coil. In order to introduce a higher energy, a magnetic coil can be used, which is larger than the coil 52 and consequently can generate stronger magnetic forces.
  • the mechanical resonance vibration leads to a hammering of the armature 48 on the valve needle 28 or to a resonating of the valve needle 28 and thus to an impressing of the sealing ball 32 in the calotte 26th
  • the armature 48 as such consists of a ferromagnetic soft iron.
  • the end face of the armature 48 deforms during embossing according to the invention, for example that the valve needle 28 digs into the end face of the armature 48, the end face can be hardened or provided with a hard inlet.
  • Anchor space changes the vibration behavior, in particular have a damping effect can, it requires filling with a much higher energy input from the outside than without filling, in function of the specific geometries and process parameters of certain embodiments, a mechanical resonance vibration in the presence of fluid can no longer be displayed.
  • the valve 24 may therefore be filled with air during the process according to the invention or be in the evacuated state.
  • FIG. 4 shows an arrangement with which an alternative advantageous embodiment of the method according to the invention is carried out.
  • the valve is not yet fully assembled.
  • the main components that are used for embossing are already assembled: valve seat, sealing ball and valve needle in
  • Needle guide instead of an anchor, a tool 58, in this embodiment, a
  • This tool 56 has a recess 58 which engages over the valve needle 28.
  • the height of the recess is such that after embossing and the resulting shortening of the valve needle 28 of the residual air gap 54 between armature and polar body 50 is formed with coil 52.
  • the length of the valve needle 28 in the original state determines the strength of the fine embossing on the calotte.
  • the valve needle 28 In the state before embossing the dome, the valve needle 28 is too long and the current residual air gap too large.
  • the tool 56 By means of a pressing force 60 in the axial direction of the valve needle acting on the valve seat, the tool 56 is now moved to the mechanical stop against the pole core 50.
  • the sealing ball continues to be impressed into the calotte of the needle tip so that a surface contact between the sealing ball and the needle tip is produced (see part B of FIG. 2).
  • the forces and materials are chosen so that only one deformation takes place on the calotte.
  • the residual air gap reached is also checked in this alternative embodiment by checking the current characteristic curve reached after embossing. One or more re-impressions are made until the setpoint characteristic is reached. If the valve needle over impresses, so be shorter than a minimum threshold, the valve must be sorted out.
  • the residual air gap can alternatively be measured purely mechanically and used as a criterion for limiting the embossing depth.
  • the armature of the electromechanical actuator itself can be used in another embodiment.
  • the residual air gap must be measured and recorded after individual embossings, and embossments must be repeated until the setpoint value for the residual air gap is reached.
  • the valve more precisely the needle tip of the valve needle, can be specifically heated in order to appropriately support a plastic deformation of the needle tip.
  • a further settlement behavior on the calotte during operation is anticipated.
  • a high-pressure control valve produced according to the invention can be used in particular in a common-rail fuel supply of an engine, in particular of a diesel engine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Manufacturing & Machinery (AREA)
  • Automatic Assembly (AREA)
  • Lift Valve (AREA)
  • Magnetically Actuated Valves (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

L'invention concerne un procédé de fabrication d'une calotte (26) dans une aiguille d'injecteur (28) d'une soupape (24) comprenant un siège (30) de soupape, une bille d'étanchéité (32) et un guidage (34) d'aiguille. Dans la soupape (24), un espace entre le siège (30) de soupape et la bille d'étanchéité (32) forme un jeu (36) de soupape et le guidage (34) d'aiguille supporte l'aiguille (28) de soupape de manière mobile axialement. La bille d'étanchéité (32) et l'aiguille (28) de soupape sont pourvues d'une pointe (40) d'aiguille. Une calotte (26) permettant la mise en contact de la bille d'étanchéité (32) est produite dans la pointe (40) d'aiguille. La calotte (26) est estampée au moins en partie par la force exercée par la bille d'étanchéité (32).
EP17769102.9A 2016-10-04 2017-09-21 Procédé de fabrication d'une calotte dans une aiguille d'injecteur d'une soupape Active EP3523533B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016219151.9A DE102016219151A1 (de) 2016-10-04 2016-10-04 Verfahren zum Herstellen einer Kalotte in einer Ventilnadel eines Ventils
PCT/EP2017/073845 WO2018065221A1 (fr) 2016-10-04 2017-09-21 Procédé de fabrication d'une calotte dans une aiguille d'injecteur d'une soupape

Publications (2)

Publication Number Publication Date
EP3523533A1 true EP3523533A1 (fr) 2019-08-14
EP3523533B1 EP3523533B1 (fr) 2020-11-11

Family

ID=59914491

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17769102.9A Active EP3523533B1 (fr) 2016-10-04 2017-09-21 Procédé de fabrication d'une calotte dans une aiguille d'injecteur d'une soupape

Country Status (3)

Country Link
EP (1) EP3523533B1 (fr)
DE (1) DE102016219151A1 (fr)
WO (1) WO2018065221A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018209332A1 (de) * 2018-06-12 2019-12-12 Robert Bosch Gmbh Ventil und Kraftstoff-Hochdruckpumpe sowie deren Herstellung

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8026084U1 (de) 1980-09-30 1981-02-19 Erwin Hengstler Hydraulik GmbH, 7613 Hausach Einstellbares ueberdruckventil
US6240947B1 (en) * 1999-08-24 2001-06-05 Alliedsignal Truck Brake Systems Company Solenoid valve seat and method of making same
DE102005032461A1 (de) * 2005-07-12 2007-01-25 Robert Bosch Gmbh Aktive Ankerhubeinstellung bei Kraftstoffinjektoren
DE102009041591B4 (de) * 2009-09-15 2012-02-02 Hydraulik-Ring Gmbh Magnetventil
DE102011012548A1 (de) * 2011-02-26 2012-08-30 Robert Bosch Gmbh Ventil und Verfahren zu dessen Herstellung
FR2973092B1 (fr) * 2011-03-25 2016-09-02 Bosch Gmbh Robert Dispositif d'obturation, regulateur de pression comportant un tel dispositif, dispositif d'injection diesel comportant un tel regulateur, moteur diesel et vehicule comportant un tel moteur
FR3002003A1 (fr) * 2013-02-11 2014-08-15 Bosch Gmbh Robert Procede de realisation d'une soupape a commande electromagnetique
DE102013213419A1 (de) 2013-07-09 2015-01-15 Robert Bosch Gmbh Neuartige Stößelspitzen-Geometrie für ein Druckregelventil

Also Published As

Publication number Publication date
DE102016219151A1 (de) 2018-04-05
EP3523533B1 (fr) 2020-11-11
WO2018065221A1 (fr) 2018-04-12

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