WO2019115057A1 - Soupape d'admission à actionnement électromagnétique et pompe à carburant haute pression - Google Patents

Soupape d'admission à actionnement électromagnétique et pompe à carburant haute pression Download PDF

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Publication number
WO2019115057A1
WO2019115057A1 PCT/EP2018/078018 EP2018078018W WO2019115057A1 WO 2019115057 A1 WO2019115057 A1 WO 2019115057A1 EP 2018078018 W EP2018078018 W EP 2018078018W WO 2019115057 A1 WO2019115057 A1 WO 2019115057A1
Authority
WO
WIPO (PCT)
Prior art keywords
longitudinal axis
inlet valve
projection
contact surface
armature
Prior art date
Application number
PCT/EP2018/078018
Other languages
German (de)
English (en)
Inventor
Alexander FENZ
Tobias Landenberger
Joerg Wuerz
Markus Grieb
Steffen Holm
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 WO2019115057A1 publication Critical patent/WO2019115057A1/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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
    • F02M59/366—Valves being actuated electrically
    • F02M59/368—Pump inlet valves being closed when actuated
    • 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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/46—Valves
    • F02M59/466—Electrically operated valves, e.g. using electromagnetic or piezoelectric 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
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • F02M63/0017—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means
    • F02M63/0021—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means characterised by the arrangement of mobile armatures
    • F02M63/0022—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means characterised by the arrangement of mobile armatures the armature and the valve being allowed to move relatively to each other
    • 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
    • F02M63/0075—Stop members in valves, e.g. plates or disks limiting the movement of armature, valve or spring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • F04B7/0076—Piston machines or pumps characterised by having positively-driven valving the members being actuated by electro-magnetic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/029—Electromagnetically actuated valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0644—One-way valve
    • F16K31/0655—Lift valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0686—Braking, pressure equilibration, shock absorbing
    • F16K31/0689—Braking of the valve element
    • 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
    • F02M2200/304—Fuel-injection apparatus having mechanical parts, the movement of which is damped using hydraulic means

Definitions

  • the invention relates to an electromagnetically actuated inlet valve for a high-pressure fuel pump with the features of the preamble of claim 1.
  • the inlet valve is used to supply the fuel high-pressure pump with fuel.
  • the invention relates to a high-pressure fuel pump with such an inlet valve.
  • an electromagnetically controllable inlet valve for a high pressure pump of a fuel injection system, in particular a common rail injection system is known.
  • the inlet valve has a liftable in the direction of a longitudinal axis armature, through which a valve member of the inlet valve is actuated. The lifting movement of the armature is in a direction of movement to the open position of the
  • Valve member limited by a stop element.
  • the stop element is annular and has a stop surface on which the
  • Magnetic anchor comes with a contact surface to the plant.
  • the lifting movement of the armature is limited by a pole core, which also forms a stop element. If the abutment surface and the contact surface are large and there is a large overlap area between them, the mechanical stress on impact of the armature can be kept low. When the magnet armature moves away from the stop element, however, a so-called hydraulic sticking occurs, whereby the movement of the
  • Magnetic anchor is obstructed.
  • the gap between the contact surface of the magnet armature and the abutment surface must be filled with liquid, as a result the large areas in the known valve is difficult.
  • the function of the intake valve is impaired because the timing of the closing and opening of the intake valve can not be determined accurately by the delayed movement of the armature and has a scattering and the
  • Intake valve may not switch at all.
  • the opening and closing of the inlet valve and, accordingly, the movement of the armature must be done with high dynamics.
  • the size of the stop surface and the contact surface and their overlap surface must be chosen as a compromise of the conflicting requirements. Due to manufacturing tolerances, in the known inlet valve, the stop surface and the contact surface and thus their overlap surface can vary in size, whereby the function of the inlet valve is impaired.
  • the size of the overlapping surface of the abutment surface and the contact surface should also not change during operation to a reliable operation of the intake valve to
  • the inlet valve according to the invention with the features of claim 1 has the advantage that the size of the overlap surface of the
  • Stop surface and contact surface is determined only by the size of the surface, which is located on the projection. This can reduce the size of the
  • Overlap surface exactly determined and the function of the intake valve can be improved.
  • the size of the overlap area does not change during operation of the inlet valve.
  • the magnet armature can be more easily released from the stop surface, as filled by the projection filling the gap between the contact surface of the armature and the
  • Magnetic anchor allows.
  • the embodiment according to claim 6 ensures that the size of the overlapping surface even when worn does not change the projection and thus the function of the inlet valve over the life is not affected.
  • FIG. 1 shows a detail of a fuel high-pressure pump in a longitudinal section
  • Figure 2 shows an enlarged view of a section II of Figure 1 according to a first
  • FIG. 3 shows the inlet valve according to the first embodiment in a cross section along line III-III in Figure 2
  • Figure 4 shows the detail II with the inlet valve according to a second
  • Figure 5 shows the detail II with the inlet valve according to a third embodiment
  • Figure 8 shows a detail VIII of Figure 1 with the inlet valve according to a fourth embodiment.
  • FIG. 1 shows a detail of a high-pressure fuel pump which conveys fuel into a high-pressure accumulator.
  • the high-pressure fuel pump is supplied by a prefeed pump under Vor fundamentaltik standing fuel.
  • the high-pressure fuel pump has a housing part 10 in the form of a cylinder head, in which a pump piston 14 is guided in a cylinder bore 12, which defines a pump working chamber 16 in the cylinder bore 12.
  • the pump piston 14 is driven in a lifting movement, for example by a drive shaft having a cam on which the pump piston 14, for example via a plunger, which may be designed as a roller tappet, is supported.
  • the pump working chamber 16 is filled with fuel via an inlet valve 18 and during the delivery stroke of the pump piston 14, fuel is displaced into the high-pressure accumulator via an outlet valve 20 when the inlet valve 18 is closed.
  • the inlet valve 18 is electromagnetically actuated and is in the
  • Housing part 10 integrated in such a way that a piston-shaped valve member 22nd the intake valve 18 is guided in a liftable manner in a bore 24 formed in the housing part 10.
  • the valve member 22 of the inlet valve 18 opens into the pump working chamber 16.
  • fuel can pass from a low-pressure space 26 formed in the housing part 10
  • a further spring 34 is provided whose spring force is greater than that of the valve spring 30.
  • an electromagnetic actuator is provided, which comprises a magnet armature 36, a magnet coil 38 which surrounds the latter annularly, and a pole core 40.
  • the further spring 34 is supported on the one hand on the armature 36 and on the other hand on the pole core 40.
  • Magnetic coil 38 energized, forms a magnetic field whose magnetic force moves the armature 36 in the direction of the pole core 40 to close a formed between the pole core 40 and the armature 36 working air gap 42.
  • the valve member 22 is relieved in this way, so that the
  • Valve spring 30 is able to pull the valve member 22 in the valve seat 32.
  • the working air gap 42 limiting pole core 40 forms an end stop 44 for the lifting magnet armature 36 from.
  • Another end stop 46 for the magnet armature 36 is formed by an annular collar 48 in a valve body 50 or a stop member 52 supported on the annular collar 48.
  • the valve body 50 has a bore 54 which is a receptacle for the
  • Magnet armature 36 forms and in which the magnet armature 36 is guided in a liftable manner via its outer jacket in the direction of its longitudinal axis 37.
  • Stop element 52 will be explained in more detail below.
  • the axial distance between the pole core 40 and the stop element 52 determines the stroke of the magnet armature 36.
  • the pole core 40 is fixedly connected to the valve body 50 by means of a sleeve 56.
  • the sleeve 56 is For this purpose, preferably welded to both the pole core 40 and the valve body 50.
  • the armature 36 has an approximately cylindrical shape and in this is the pole core 40 toward a recess 58, for example in the form of a blind bore formed. In the recess 58, the spring 34 protrudes, which is supported on the bottom of the recess 58.
  • the magnet armature 36 also has at least one through hole 60 extending in the direction of its longitudinal axis 37, wherein preferably a plurality of through bores 60 distributed over the circumference of the magnet armature 36 are provided.
  • Through holes 60 is a compound of the armature 36 on the one hand to the pole core 40 and on the other hand to the valve member 22 out
  • the through holes 60 form passages through the magnet armature 36.
  • the stop element 52 is, for example, sleeve-shaped and has a collar 62 resting against the annular collar 48 towards the valve member 22 and a cylindrical portion 63 protruding into the continuation 54a of the bore 54 in the region of the annular collar 48, which is pressed into the bore 54, for example.
  • the armature 36 passes through to the valve member 22 through, wherein the inner diameter of the
  • Stop element 52 is slightly smaller than the diameter of the bore 54 in the region of the annular collar 48. On the side facing away from the annular collar 50 and the armature 36 side facing the stop element 52 at its collar 62 a stop surface 64 for the armature 36 on.
  • Magnetic armature 36 has, on its side facing the abutment element 52, a contact surface 66 which is arranged on the end face of the magnet armature 36 and with which the magnet armature 36 is attached to the abutment surface 64 of the magnet armature 36
  • Stop element 52 comes to rest.
  • the magnet armature 36 has an annular projection 68 projecting from its end side in the direction of the longitudinal axis 37 towards the stop element 52, on the end face of which the stop element 52 faces the contact surface 66 the magnet armature 36 is arranged.
  • Contact surface 66 has a smaller extent in the radial direction with respect to the longitudinal axis 37 than the abutment surface 64 of the stop element 52.
  • the radially inner edge 68a of the projection 68 and thus the edge 66a of the contact surface 66 with respect to the longitudinal axis 37 is at a greater distance from the longitudinal axis 37 arranged as the radial inner edge 64 a of the stop surface 64 and with respect to the longitudinal axis 37 radially outer edge 68 b of
  • Projection 68 and thus the edge 66b of the contact surface 66 is located at a smaller distance from the longitudinal axis 37 than the radially outer edge 64a of the abutment surface 64.
  • the size of the overlapping surface between the contact surface 66 of the armature 36 and the abutment surface 64 of the stop element 52 is unique determined by the size of the contact surface 66.
  • the abutment surface 64 of the stop element 52 and the contact surface 66 of the magnet armature 36 are preferably at least approximately planar and extend at least approximately perpendicular to the longitudinal axis 37.
  • the projection 68 of the magnet armature 36 is viewed in the longitudinal axis 37 containing sections at least approximately rectangular. This ensures that even with a wear of the projection 68 during operation of the pump, when the height of the projection 68 reduces in the direction of the longitudinal axis 37, the size of the contact surface 66 remains unchanged.
  • FIG. 4 shows a second embodiment of the inlet valve 18 is shown, in which the basic structure is the same as the first
  • the stop member 52 has a protruding in the direction of the longitudinal axis 37 to the armature 36 annular projection 70, on the end face of the stop surface 64 is arranged.
  • the contact surface 66 of the magnet armature 36 is arranged on the stop element 52 facing annular end face.
  • the longitudinal edge 37 radially inner edge 70a of the projection 70 and thus the edge 64a of the stop surface 64 is disposed at a greater distance from the longitudinal axis 37 than the radial inner edge 66a of the contact surface 66 and with respect to the longitudinal axis 37 radially outer edge 70b of Projection 70 and thus the edge 64b of the stop surface 64 is arranged at a smaller distance from the longitudinal axis 37 than the radially outer edge 66b of the contact surface 66.
  • the size of the overlap area between the contact surface 66 of the magnet armature 36 and the stop surface 64 of the stop element 52 is determined solely by the size of the stop surface 64.
  • the stop surface 64 of the stop element 52 and the contact surface 66 of the magnet armature 36 are preferably at least approximately planar and extend at least approximately perpendicular to the longitudinal axis 37.
  • the projection 68 of the stop element 52 is viewed in the longitudinal axis 37 containing sections at least approximately rectangular. This ensures that even with a wear of the projection 68 during operation of the pump, when the height of the projection 68 reduces in the direction of the longitudinal axis 37, the size of the stop surface 64 remains unchanged.
  • Stop element 52 is preferably at least partially disposed outside of the through holes 60, so that in a system of the
  • the through holes 60 are not completely covered but at least partially remain free.
  • the projection 68 or 70 is preferably at least partially disposed radially outside of the through holes 60.
  • the inlet valve 18 is a fragmentary according to a third
  • Longitudinal axis 37 protruding projection 72 is provided, which extends in the radial direction with respect to the longitudinal axis 37, starting from the radially inner edge of the stop member 52 at its inner diameter to the outside.
  • the stop surface 64 is arranged on the projection 72, wherein the longitudinal axis 37 with respect to the radially outer edge 64b of the stop surface 64 is disposed at a smaller distance from the longitudinal axis 37 than the radially outer edge 66b of the contact surface 66 of the armature 36.
  • the radial extent of the stop surface 64 is thus less than the radial extent of
  • the transition from the radially outer edge of the projection 72 to the collar 62 of the stop element 52 may be approximately rectangular as shown in Figure 5 step.
  • the transition from the radially outer edge of the projection 72 to the collar 62 of the stop element 52 can also run obliquely sloping as shown in Figure 6. Further alternatively, the
  • Transition from the radially outer edge of the projection 72 to the collar 62 of the stop element 52 may be rounded, for example, rounded concave, as shown in Figure 7. Furthermore, alternatively, the transition from the radially outer edge of the projection 72 to the collar 62 of the stop element 52 may also be implemented in several stages.
  • the pole core 40 serves as a stop element for limiting the stroke movement of
  • the pole core 40 has an in the direction of the longitudinal axis 37 to the armature 36 toward projecting annular projection 82 on which the stop surface 84 is arranged.
  • the projection 82 and thus the abutment surface 84 has, in the radial direction with respect to the longitudinal axis 37, a smaller extent than the contact surface 66 of the magnet armature 36, with which it comes into abutment against the abutment surface 84.
  • Projection 82 and the stop surface 84 may be as in one of the embodiments explained above.
  • the projection 82 may be arranged on the armature 36 instead of the pole core 40.
  • a separate stop element may be arranged between the pole core 40 and the armature 36 and a separate stop element may be arranged.

Landscapes

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

Abstract

L'invention concerne une soupape d'admission (18) à actionnement électromagnétique destinée à une pompe à carburant haute pression, comprenant un induit magnétique (36) qui peut effectuer un mouvement alternatif dans la direction de son axe longitudinal (37) et sert à actionner un organe de soupape (22) de la soupape d'admission (18). Le mouvement alternatif de l'induit magnétique (36) est limité au moins dans une direction de mouvement par un élément de butée (52) qui présente une surface de butée (64) contre laquelle l'induit magnétique (36) vient en appui avec une surface de contact (66) en tant que surface antagoniste. La surface de butée (64) de l'élément de butée (52) ou la surface de contact (66) de l'induit magnétique (36) présente une forme annulaire et est disposée au niveau d'un élément en saillie (68) qui dépasse de l'élément de butée (52) ou de l'induit magnétique (36) dans la direction de l'axe longitudinal (37). En outre, l'invention concerne une pompe à carburant haute pression pourvue d'une telle soupape d'admission (18).
PCT/EP2018/078018 2017-12-15 2018-10-15 Soupape d'admission à actionnement électromagnétique et pompe à carburant haute pression WO2019115057A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017222947.0 2017-12-15
DE102017222947.0A DE102017222947A1 (de) 2017-12-15 2017-12-15 Elektromagnetisch betätigbares Einlassventil und Kraftstoff-Hochdruckpumpe

Publications (1)

Publication Number Publication Date
WO2019115057A1 true WO2019115057A1 (fr) 2019-06-20

Family

ID=63862163

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/078018 WO2019115057A1 (fr) 2017-12-15 2018-10-15 Soupape d'admission à actionnement électromagnétique et pompe à carburant haute pression

Country Status (2)

Country Link
DE (1) DE102017222947A1 (fr)
WO (1) WO2019115057A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4421947A1 (de) * 1993-12-09 1995-06-14 Bosch Gmbh Robert Elektromagnetisch betätigbares Ventil
WO2002012711A1 (fr) * 2000-08-10 2002-02-14 Robert Bosch Gmbh Soupape d'injection de carburant
DE102005031881A1 (de) * 2004-07-08 2006-02-09 Denso Corp., Kariya Kraftstoffeinspritzventil
EP2325473A1 (fr) * 2008-09-17 2011-05-25 Hitachi Automotive Systems, Ltd. Soupape d'injection de carburant pour moteur à combustion interne
WO2016012143A1 (fr) * 2014-07-22 2016-01-28 Robert Bosch Gmbh Élément de commande électromagnétique d'une soupape d'aspiration et soupape d'aspiration
DE102015220383A1 (de) 2015-10-20 2017-04-20 Robert Bosch Gmbh Elektromagnetisch betätigbares Saugventil für eine Hochdruckpumpe sowie Hochdruckpumpe

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4421947A1 (de) * 1993-12-09 1995-06-14 Bosch Gmbh Robert Elektromagnetisch betätigbares Ventil
WO2002012711A1 (fr) * 2000-08-10 2002-02-14 Robert Bosch Gmbh Soupape d'injection de carburant
DE102005031881A1 (de) * 2004-07-08 2006-02-09 Denso Corp., Kariya Kraftstoffeinspritzventil
EP2325473A1 (fr) * 2008-09-17 2011-05-25 Hitachi Automotive Systems, Ltd. Soupape d'injection de carburant pour moteur à combustion interne
WO2016012143A1 (fr) * 2014-07-22 2016-01-28 Robert Bosch Gmbh Élément de commande électromagnétique d'une soupape d'aspiration et soupape d'aspiration
DE102015220383A1 (de) 2015-10-20 2017-04-20 Robert Bosch Gmbh Elektromagnetisch betätigbares Saugventil für eine Hochdruckpumpe sowie Hochdruckpumpe

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Publication number Publication date
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