EP3364015A1 - Soupape de commutation électromagnétique et pompe haute pression à carburant - Google Patents

Soupape de commutation électromagnétique et pompe haute pression à carburant Download PDF

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Publication number
EP3364015A1
EP3364015A1 EP17156169.9A EP17156169A EP3364015A1 EP 3364015 A1 EP3364015 A1 EP 3364015A1 EP 17156169 A EP17156169 A EP 17156169A EP 3364015 A1 EP3364015 A1 EP 3364015A1
Authority
EP
European Patent Office
Prior art keywords
armature
pole piece
switching valve
outer circumference
region
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
EP17156169.9A
Other languages
German (de)
English (en)
Other versions
EP3364015B8 (fr
EP3364015B1 (fr
Inventor
Matthias Bleeck
Bernd Gugel
Andreas Mühlbauer
Henry Meißgeier
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.)
Vitesco Technologies GmbH
Original Assignee
Continental Automotive 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 Continental Automotive GmbH filed Critical Continental Automotive GmbH
Priority to EP17156169.9A priority Critical patent/EP3364015B8/fr
Priority to KR1020170165480A priority patent/KR102017955B1/ko
Priority to CN201810149415.3A priority patent/CN108425775B/zh
Priority to JP2018023926A priority patent/JP6542405B2/ja
Priority to US15/897,398 priority patent/US20180230955A1/en
Publication of EP3364015A1 publication Critical patent/EP3364015A1/fr
Application granted granted Critical
Publication of EP3364015B1 publication Critical patent/EP3364015B1/fr
Publication of EP3364015B8 publication Critical patent/EP3364015B8/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • 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
    • 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
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
    • 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
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D41/3809—Common rail control systems
    • 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
    • F02M51/0614—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of electromagnets or fixed armature
    • 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
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • F02M51/0628—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a stepped armature
    • 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
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
    • F02M51/0671—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto
    • F02M51/0682—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto the body being hollow and its interior communicating with the fuel flow
    • 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
    • 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
    • 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
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/14—Direct injection into combustion chamber
    • 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
    • F02M2200/08—Fuel-injection apparatus having special means for influencing magnetic flux, e.g. for shielding or guiding magnetic flux
    • 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
    • F02M2200/09—Fuel-injection apparatus having means for reducing noise
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures

Definitions

  • the invention relates to an electromagnetic switching valve for a fuel injection system of an internal combustion engine, as well as a high-pressure fuel pump having such an electromagnetic switching valve.
  • High-pressure fuel pumps in fuel injection systems in internal combustion engines are used to pressurize a high-pressure fuel, the pressure is for example in gasoline engines in the range of 150 bar to 400 bar and diesel engines in the range of 1500 bar to 2500 bar.
  • valve assemblies may be provided at various positions of the path fuel takes from a tank to the respective combustion chamber, for example as an intake or exhaust valve on a high pressure fuel pump that pressurizes the fuel, but also as a relief valve at various positions, for example the fuel injection system, for example on a common rail, which stores the pressurized fuel before injection into the combustion chamber.
  • switching valves are accordingly constructed as a combination of a switching magnet, which operates the magnetic actuator, with a hydraulic connected through this, the valve region. In operation, two switching states of the hydraulics, an open position and a closed position, are thus achieved.
  • the switching magnet has in the actuator region by a force-generating air gap separate components, namely a movable armature and a fixed pole core, which are held by the return spring from each other at a distance.
  • a force-generating air gap separate components, namely a movable armature and a fixed pole core, which are held by the return spring from each other at a distance.
  • the switching valve has hitherto been designed so that the maximum possible magnetic flux density in the air gap between the armature and pole core in the operating point at which the maximum air gap between armature and pole core, and in which an equilibrium of forces between the return spring and the magnetic force of the solenoid is established so that the moving components are excited to move as quickly as possible.
  • the moving components are then further accelerated by the magnetic force and the air gap is reduced. In the state of the minimum air gap, the magnetic force is then maximum.
  • the momentum forces depend on the mass of the moving components and their speed. With high pulse forces, the consequence is that a high degree of wear can occur between the components and the sound noises during operation are very high. Noise occurs with each change of the switching state, both by the solenoids themselves, as well as by the hydraulics. At least two components hit each other and thus generate noise.
  • such a switching valve is used as a digital intake valve on a high-pressure fuel pump in a fuel injection system of an internal combustion engine.
  • the switching time of such an intake valve is designed so that it is able to switch quickly even at the highest engine speed of the internal combustion engine.
  • this is in contrast to the goal that in any other operating condition of the internal combustion engine, namely at engine idle, no significant noise should be generated.
  • the switching valve has been designed for the switching time for the operating point with the highest switching dynamics. Attempts were made to avoid noise and wear for movements that oppose the switching direction of the switching magnet are directed to intercept with short-term current pulses to increase the magnetic force. However, it is difficult to mitigate movements in the switching direction of the switching valve.
  • the object of the invention is therefore to provide an electromagnetic switching valve, in which a noise development can be reduced to a minimum in all operating points.
  • a high-pressure fuel pump having such an electromagnetic switching valve is the subject of the independent claim.
  • An electromagnetic switching valve for a fuel injection system of an internal combustion engine has a valve region with a closing element for closing the switching valve and an actuator region for moving the closing element along a movement axis.
  • the actuator region includes an armature movable along the axis of motion, which is coupled to the closing element for moving the closing element, a fixed pole piece and a solenoid for generating a magnetic flux in the armature and the pole piece.
  • the armature has a magnetic flux concentration area.
  • the magnetic flux concentration region is advantageously formed by an armature outer circumference having a shoulder, so that the armature has a first armature outer circumference and a second armature outer circumference which are different.
  • the first armature outer circumference is smaller than the second armature outer circumference, wherein the first armature outer circumference is in particular at most 3/4 of the second armature outer circumference.
  • the first armature outer circumference is substantially along the axis of motion half the total length of the armature.
  • the armature and the pole piece are disposed adjacent to each other with the region of the armature having the first armature outer periphery facing the pole piece.
  • the shoulder in the anchor is arranged at a defined height and with a defined diameter and a defined length so as to be able to achieve a defined magnetic flux concentration in the anchor.
  • an armature surface and a Pollustration-of-semiconductor lie directly opposite, wherein the armature surface of the armature in the region of the first armature outer circumference is about half of the Pollustrometry-of-semiconductor.
  • the pole piece has a constriction in a pole piece outer circumference for forming a magnetic flux concentration range.
  • the constriction is arranged in an armature facing half of the pole piece, wherein the constriction is in particular at least 1/5 of an overall length of the pole piece along the axis of movement.
  • the pole piece outer circumference is reduced by at least 1/4 in the region of the constriction.
  • the constriction is arranged at a defined height in the pole piece and with a defined diameter and a defined length so as to be able to achieve a defined magnetic flux concentration in the pole piece.
  • the constriction of the pole piece along the axis of movement at the height of a spring recess of a return spring between the pole piece and anchor is particularly advantageously, the constriction of the pole piece along the axis of movement at the height of a spring recess of a return spring between the pole piece and anchor.
  • constriction is along the axis of movement at the level of the solenoid.
  • a high-pressure fuel pump for a fuel injection system of an internal combustion engine advantageously has an electromagnetic switching valve described above.
  • the switching valve may be formed, for example, as an inlet valve for the high-pressure fuel pump or as an exhaust valve.
  • the described switching valve it is also possible to provide the described switching valve as a pressure regulating valve, which is arranged for example on a common rail of a fuel injection system.
  • Fig. 1 shows a schematic overview of a fuel injection system 10 of an internal combustion engine, which promotes a fuel 12 from a tank 14 via a prefeed pump 16, a high-pressure fuel pump 18 and a high-pressure fuel storage 20 to injectors 22, which then inject the fuel 12 into combustion chambers of the internal combustion engine.
  • the fuel 12 is introduced via an inlet valve 24 into the high-pressure fuel pump 18, pressurized via an outlet valve 26 out of the high-pressure fuel pump 18, and then fed to the high-pressure fuel accumulator 20.
  • a pressure control valve 28 is arranged to control the pressure of the fuel 12 in the high-pressure fuel storage 20 can.
  • Both the inlet valve 24, and the outlet valve 26, as well as the pressure control valve 28 may be formed as electromagnetic switching valves 30 and therefore operated actively.
  • Fig. 2 shows a first embodiment of such an electromagnetic switching valve 30 in a longitudinal sectional view through the electromagnetic switching valve 30, which is designed as an inlet valve 24 of a high-pressure fuel pump 18.
  • the electromagnetic switching valve 30 is arranged in a housing bore 32 of a housing 34 of the high-pressure fuel pump 18.
  • the electromagnetic switching valve 30 has a valve region 36 and an actuator region 38, wherein the actuator region 38 has a fixed pole piece 40 and an armature 44 movable along a movement axis 42.
  • the valve region 36 comprises a valve seat 46 and a closing element 48, which cooperate to close the electromagnetic switching valve 30.
  • the pole piece 40 and the armature 44 are accommodated together in a sleeve 50, although this need not necessarily be the case.
  • a solenoid 52 is pushed onto the sleeve 50 and is thus located around the pole piece 40 and the armature 44 disposed in the electromagnetic switching valve 30.
  • the armature 44 and the pole piece 40 are disposed directly adjacent to each other so that an armature surface 54 and a pole piece surface 56 are directly opposed.
  • a return spring 58 is disposed between the armature 44 and the pole piece 40 to space the armature 44 and pole piece 40, thus creating an air gap 60.
  • the armature 44 is coupled to an actuating pin 62 which moves in operation with the armature 44 along the axis of movement 42.
  • the actuating pin 62 pushes the closing element 48 away from the valve seat 46 or has no contact with the closing element 48, so that this, if from the opposite Side a force acts to move the valve seat 46 and thus close the switching valve 30.
  • the solenoid 42 In the energized state of the electromagnetic switching valve 30, the solenoid 42 generates a magnetic field in the electromagnetic switching valve 30, which in Fig. 3 represented by magnetic field lines 64.
  • the magnetic flux of the magnetic field lines 64 is arranged in all directly adjacent to the solenoid 52 metallic / magnetic elements, in particular in the pole piece 40 and in the armature 44. This creates a magnetic attraction between the pole piece 40 and armature 44, and the Anchor 44 is pulled with its armature surface 54 in the direction of the pole piece surface 56 of the pole piece 40.
  • the armature 44 takes the actuating pin 62 so that it loses contact with the closing element 48, and the closing element 48 can thus return to the valve seat 46.
  • the armature 44 has a magnetic flux concentration region 66, that is to say a region in which the magnetic field lines are guided on a reduced cross-sectional area through the armature 44, so that they must concentrate.
  • the magnetic flux concentration region 66 is formed by an armature outer circumference UA having a shoulder 68, so that a first armature outer circumference UA1 and a second armature outer circumference U A2 are formed which are different from each other, wherein the first armature outer circumference UA1 is smaller than the second armature outer circumference U A2 .
  • the armature 44 has the first armature outer circumference UA1 in the region where the armature 44 is directly adjacent to the pole piece 40, that is, at its upper end portion 70.
  • the first armature outer circumference UA1 amounts to a maximum of 3/4 of the second armature outer circumference UA2.
  • a length of the first armature outer circumference UA1 along the movement axis 42 is substantially half of an overall length LA of the armature 44.
  • a targeted magnetic throttle can be generated in the armature 44 in order to achieve the advantages described above.
  • the course of the magnetic field lines 64 is in Fig. 3 It can be seen that the magnetic field lines 64 concentrate in the region in which the armature outer circumference UA is reduced, so that the total magnetic flux concentrates here.
  • armature surface 54 facing the pole piece 40 at the top end portion 70 is smaller than the pole piece surface 56 which is directed toward the armature 44. In this case, the armature surface 54 makes up about half of the pole piece surface 56.
  • the two opposing surfaces namely the armature surface 54 and the pole piece surface 56, are the surfaces which generate the magnetic force between armature 44 and pole piece 40.
  • Fig. 4 and Fig. 5 show a second embodiment of the electromagnetic switching valve 30, in which the magnetic throttle is provided by providing the magnetic flux concentration region 66 not in the armature 44 as in the first embodiment, but in the pole piece 40.
  • both the armature 44 and the pole piece 40 each form a magnetic flux concentration region 66 and thus a magnetic throttle.
  • the magnetic flux concentration region 66 in the second embodiment is formed by a constriction 72 in the pole piece 40, so that a pole piece outer circumference UP, which is otherwise constant across the movement axis 42, is reduced in the region of the constriction 72.
  • the constriction 72 is disposed in a half 74 of the pole piece 40, which is arranged facing the armature 44, but not, as in the armature 44 in the first embodiment, on a End portion, but at a Pol Northend Scheme 76 spaced. It is thereby achieved that where the pole piece surface 56 is adjacent to the anchor surface 54, the maximum magnetic force from the pole piece 40 can act on the armature 44 to pull the armature 44 toward the pole piece 40.
  • the constriction 72 has a length which corresponds to at least 1/5 of a length LP of the pole piece 40 along the movement axis 42.
  • the pole piece outer circumference UP is reduced by at least 1/4 in the region of the constriction 72 as compared to the constant pole piece outer circumference UP outside the constriction 72.
  • the return spring 58 is arranged so that it is supported within the pole piece 40.
  • the pole piece 40 has a through hole 78, which expands in a lower Pol Georgiaend Suite 78, which is arranged facing the armature 44, to form a spring recess 82.
  • the spring recess 82 is defined by side walls 84 of the through hole 78 and by support walls 68, which are formed by the extension of the through hole 78 in Pol Georgiaend Scheme 78. At this Abstütz contendn 68 then the return spring 58 is supported.
  • the constriction 72 along the axis of movement 42 is formed at the level of the spring recess 82, in particular so that it does not protrude beyond the spring recess 82.
  • the magnetic flux concentration can be achieved, in particular in the region of the return spring 58, that is, where the restoring force of the return spring 58 also acts.
  • constriction 72 is advantageously also at the level of the solenoid 52 along the axis of movement 42.
  • Fig. 5 the course of the magnetic field lines 64 is shown in the pole piece 40, wherein it can be seen that concentrate in the region of the constriction 72, the magnetic field lines 64, and thus a magnetic flux concentration in the pole piece 40 can be generated.
  • the magnetic throttle generated in the armature 44 with respect to the first embodiment can also be generated in the pole piece 40.
  • Fig. 6 shows a diagram representing the magnetic force generated by the solenoid 52 and the effective magnetic flux in the armature 44 and the pole piece 40 against the magnetic excitation by the solenoid 52.
  • the dashed lines correspond to the effective magnetic force in a known arrangement in which the armature 44 and the pole piece 40 have no magnetic flux concentration region 66.
  • the solid lines show the acting magnetic force in an embodiment of the armature 44 and the pole piece 40 with magnetic flux concentration.
  • the horizontal line in the diagram indicates the magnetic force to be generated by the solenoid 52, which is necessary to override the restoring force of the return spring 58, so that the armature 44 starts to move.
  • the diagram each shows a portion of a hysteresis that occurs during operation of the switching valve 30.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Magnetically Actuated Valves (AREA)
  • Fuel-Injection Apparatus (AREA)
EP17156169.9A 2017-02-15 2017-02-15 Soupape de commutation électromagnétique et pompe haute pression à carburant Active EP3364015B8 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP17156169.9A EP3364015B8 (fr) 2017-02-15 2017-02-15 Soupape de commutation électromagnétique et pompe haute pression à carburant
KR1020170165480A KR102017955B1 (ko) 2017-02-15 2017-12-04 전자기 스위칭 밸브 및 고압 연료 펌프
CN201810149415.3A CN108425775B (zh) 2017-02-15 2018-02-13 电磁的开关阀和燃料高压泵
JP2018023926A JP6542405B2 (ja) 2017-02-15 2018-02-14 電磁切換弁および高圧燃料ポンプ
US15/897,398 US20180230955A1 (en) 2017-02-15 2018-02-15 Electromagnetic Switching Valve and High-Pressure Fuel Pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17156169.9A EP3364015B8 (fr) 2017-02-15 2017-02-15 Soupape de commutation électromagnétique et pompe haute pression à carburant

Publications (3)

Publication Number Publication Date
EP3364015A1 true EP3364015A1 (fr) 2018-08-22
EP3364015B1 EP3364015B1 (fr) 2020-04-08
EP3364015B8 EP3364015B8 (fr) 2020-06-03

Family

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Family Applications (1)

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JP (1) JP6542405B2 (fr)
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EP3663571A1 (fr) * 2018-12-04 2020-06-10 Delphi Technologies IP Limited Pompe à carburant et ensemble soupape d'admission associée

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US10947880B2 (en) * 2018-02-01 2021-03-16 Continental Powertrain USA, LLC Injector for reductant delivery unit having fluid volume reduction assembly
JP7115328B2 (ja) * 2019-01-15 2022-08-09 株式会社デンソー 電磁弁

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EP1055812A2 (fr) * 1999-05-26 2000-11-29 Siemens Automotive Corporation Injecteur de combustible pour gaz naturel comprimé
JP2002310029A (ja) * 2001-04-10 2002-10-23 Denso Corp 燃料噴射弁
US20030217735A1 (en) * 2002-05-22 2003-11-27 Mitsubishi Denki Kabushiki Kaisha High-pressure fuel supply system
US20040050978A1 (en) * 2002-09-18 2004-03-18 Koichi Sugiyama Electromagnetic fuel injection device for internal combustion engine
US20070176716A1 (en) * 2006-02-01 2007-08-02 Denso Corporation Solenoid device and injection valve having the same
DE102009054838A1 (de) * 2009-12-17 2011-06-22 Robert Bosch GmbH, 70469 Elektromagnetisches Schaltventil mit einer Magnetspule und einem in einem Gehäuse axial bewegbaren Anker
DE102014214231A1 (de) * 2014-07-22 2016-01-28 Robert Bosch Gmbh Elektromagnetische Stelleinheit für ein Saugventil sowie Saugventil

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US6994406B1 (en) * 1998-12-16 2006-02-07 Kelsey-Hayes Company EHB proportional solenoid valve with stepped gap armature
JP3882892B2 (ja) * 2001-11-07 2007-02-21 株式会社デンソー 燃料噴射装置
DE102011090006B4 (de) * 2011-12-28 2015-03-26 Continental Automotive Gmbh Ventil
US9377124B2 (en) * 2013-10-15 2016-06-28 Continental Automotive Systems, Inc. Normally low solenoid valve assembly
DE102014215774B4 (de) * 2014-08-08 2016-06-30 Continental Automotive Gmbh Vorrichtung für eine Hochdruckpumpe für ein Kraftfahrzeug
DE102015218768B3 (de) * 2015-09-29 2017-03-02 Continental Automotive Gmbh Elektromagnetischer Aktor, elektromagnetisches Ventil und Kraftstoffhochdruckpumpe

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Publication number Priority date Publication date Assignee Title
DE3544575A1 (de) * 1984-12-26 1986-07-03 Nippondenso Co., Ltd., Kariya, Aichi Elektromagnetisch betaetigtes kraftstoffeinspritzventil
EP1055812A2 (fr) * 1999-05-26 2000-11-29 Siemens Automotive Corporation Injecteur de combustible pour gaz naturel comprimé
JP2002310029A (ja) * 2001-04-10 2002-10-23 Denso Corp 燃料噴射弁
US20030217735A1 (en) * 2002-05-22 2003-11-27 Mitsubishi Denki Kabushiki Kaisha High-pressure fuel supply system
US20040050978A1 (en) * 2002-09-18 2004-03-18 Koichi Sugiyama Electromagnetic fuel injection device for internal combustion engine
US20070176716A1 (en) * 2006-02-01 2007-08-02 Denso Corporation Solenoid device and injection valve having the same
DE102009054838A1 (de) * 2009-12-17 2011-06-22 Robert Bosch GmbH, 70469 Elektromagnetisches Schaltventil mit einer Magnetspule und einem in einem Gehäuse axial bewegbaren Anker
DE102014214231A1 (de) * 2014-07-22 2016-01-28 Robert Bosch Gmbh Elektromagnetische Stelleinheit für ein Saugventil sowie Saugventil

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3663571A1 (fr) * 2018-12-04 2020-06-10 Delphi Technologies IP Limited Pompe à carburant et ensemble soupape d'admission associée

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CN108425775B (zh) 2020-09-15
KR20180094472A (ko) 2018-08-23
EP3364015B8 (fr) 2020-06-03
CN108425775A (zh) 2018-08-21
KR102017955B1 (ko) 2019-09-03
JP2018135882A (ja) 2018-08-30
EP3364015B1 (fr) 2020-04-08
US20180230955A1 (en) 2018-08-16
JP6542405B2 (ja) 2019-07-10

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