EP3695110A1 - Fuel injection valve - Google Patents

Fuel injection valve

Info

Publication number
EP3695110A1
EP3695110A1 EP18778952.4A EP18778952A EP3695110A1 EP 3695110 A1 EP3695110 A1 EP 3695110A1 EP 18778952 A EP18778952 A EP 18778952A EP 3695110 A1 EP3695110 A1 EP 3695110A1
Authority
EP
European Patent Office
Prior art keywords
housing
fuel injection
injection valve
valve
actuator unit
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
EP18778952.4A
Other languages
German (de)
French (fr)
Other versions
EP3695110B1 (en
Inventor
Matteo Soriani
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 Technologies 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 Technologies GmbH filed Critical Continental Automotive Technologies GmbH
Publication of EP3695110A1 publication Critical patent/EP3695110A1/en
Application granted granted Critical
Publication of EP3695110B1 publication Critical patent/EP3695110B1/en
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
    • F02M61/166—Selection of particular materials
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/90—Selection of particular materials
    • F02M2200/9046—Multi-layered materials

Definitions

  • Fuel injection valve The present disclosure relates to a fuel injection valve for injecting fuel directly or indirectly into an internal combustion engine of a vehicle.
  • Fuel injection valves typically have a valve body of stainless steel comprising a cavity with a fluid inlet portion and a fluid outlet portion and a valve needle axially movable in the cavity.
  • the valve needle is actuated by an electromagnetic actuator unit which has an armature connected to the valve needle and movable in the cavity.
  • the electromagnetic actuator unit further comprises a coil which can be energized to move the armature.
  • Pole pieces made of a material of high magnetic permeability serve to direct the magnetic field.
  • Other metal parts of the injection valve can influence the magnetic field likewise and have an impact on the performance of the injection valve.
  • a fuel injection valve comprising a valve body with a central longitudinal axis .
  • the valve body comprises a cavity with a fluid inlet portion and a fluid outlet portion.
  • the cavity is defined by an interior surface of the hollow valve body.
  • the fuel injection valve further comprises a valve needle axially movable in the cavity, i.e. the valve needle is received in the cavity and axially movable with respect to the valve body. The valve needle prevents a fluid flow through the fluid outlet portion in a closing position and releases the fluid flow through the fluid outlet portion in further positions.
  • the fuel injection valve further comprises an electromagnetic actuator unit being operable to actuate the valve needle.
  • a metal housing is partially arranged around the valve body and the electromagnetic actuator unit.
  • the metal housing is at least partially laminated.
  • the housing may expediently represent a magnetic yoke for guiding magnetic flux of the electromagnetic actuator unit.
  • the electromagnetic actuator unit comprises an armature which is fixed to the needle or coupled to the needle by a form-fit and/or force-fit connection to cause the needle to move axially in the cavity in response to a magnetic field generated when the coil is energized.
  • the housing may expediently be operable to guide the magnetic field towards the armature.
  • the housing being at least partially laminated it is understood that at least a part of the housing is made of multiple layers of metal.
  • the housing is arranged around the valve body to receive the actuator unit, in particular the coil and part of its power supply.
  • the housing is made of a metal, e.g. stainless steel, for example by a turning manufacturing technology.
  • the fuel injection valve according to the present invention has the advantage, that due to the laminated design of the housing eddy currents are minimized. Thus, magnetic losses can be reduced and the overall magnetic performance of the injector can be improved .
  • the housing may be overmoulded, preferably to be permanently connected to the valve body. Additionally or alternatively, a press-fit connection may be established between the housing and the valve body for permanently connecting the housing to the valve body.
  • the housing is comprised by an integrally formed power group module of the fuel injection valve.
  • the power group module may expediently comprise the housing, the coil and a plastic part - the plastic part being in particular produced by overmolding the housing and the coil. That the power group module is "integrally formed" means in particular that it cannot be nondestructively disassembled.
  • the plastic part preferably comprises an electrical connector for connecting the coil to an electronic control unit.
  • the power group module may be per- manently connected to the valve body by means of the overmolded plastic part fixing the module to the valve body and/or by a press-fit connection with the valve body, e.g. between the housing and the valve body.
  • a laminated part of the housing comprises a plurality of single layers which extend perpendicular to the radial direction with respect to the central longitudinal axis L of the injection valve.
  • the single layers follow one another in radial direction. This has the advantage that the orientation of the layers effectively helps to reduce eddy currents, which tend to occur in radial direction in the housing.
  • the housing is at least partially formed by a wrapped metal sheet.
  • a wrapped metal sheet By this it is understood that at least a part of the housing is formed by a metal sheet which is wound around an axis.
  • a metal sheet can be wound around the central longitudinal axis L of the valve body.
  • a housing formed by a wrapped metal sheet can be manufactured easily and at low cost.
  • the housing may consist entirely of metal. This may be ad ⁇ vantageous for assembling the housing, including e.g. producing of welded and/or soldered connections.
  • the single layers are metal layers which alternate with insulating layers.
  • the wrapped metal sheet is laminated with an insulating layer.
  • the metal layers or the metal sheet, respectively are/is coated with an insulating film. In this way a particular high resistance between the metal layers or the turns of the wrapped metal sheet is achievable and the eddy currents may be particularly small.
  • the metal sheet has a thickness of 0.05 mm to 0.2 mm, the limits being included.
  • Such a sheet may be wound in 5 to 40 turns, the limits being included, to build up a housing of the required thickness which may be in the order of 1.6 mm.
  • the housing comprises a mantle part extending around the valve body and surrounding the electro ⁇ magnetic actuator unit, the mantle part being laminated.
  • the mantle part can also be denoted as a peripheral part.
  • the housing further comprises a washer part forming the base of the housing and extending radially from the valve body.
  • the washer part may be in the shape of a disc having a main plane of extension which is perpendicular to the longitudinal axis.
  • One axial end of the mantle part may expediently adjoin the washer part.
  • the housing has at least two separate parts which may be joined for example by laser welding.
  • One part of the housing, the mantle part can be easily man ⁇ ufactured in the laminated design, for example by wrapping a metal sheet .
  • the second part, the washer part would be more difficult to manufacture in a laminated fashion.
  • this part typically has a lower contribution to the magnetic performance of the valve. Therefore, the washer part may be massive and may be produced by a process like stamping.
  • This embodiment has the advantage, that the housing can be manufactured easily and at low cost.
  • At least the laminated part of the housing is made of ferritic or martensitic stainless steel. These materials are suited for the use in an injection valve and are magnetic. Further advantages, advantageous embodiments and developments of the valve assembly for an injection valve, the fluid injection valve and the engine will become apparent from the exemplary embodiments which are described below in association with the schematic figures.
  • Figure 1 shows a cross-section of a fuel injection valve with a housing according to an embodiment of the invention
  • Figure 2 shows a partial cross-section of the housing according to figure 1 and
  • Figure 3 shows a perspective view of a first part of the housing according to figure 2.
  • Figure 1 shows an injection valve 1 for the injection of fuel into an internal combustion engine.
  • the injection valve 1 comprises a valve assembly 3 with a valve body 4 with a central longitudinal axis L.
  • the valve body 4 comprises a cavity 9 with a fluid inlet portion 5 and a fluid outlet portion 7.
  • a valve needle 11 is arranged axially movable in the cavity 9.
  • the valve needle 11 prevents a fluid flow through the fluid outlet portion 7 in a closing position.
  • the needle 11 has a ball 13 welded to its lower end which interacts with a valve seat (not shown in detail) of the valve body 4.
  • the injection valve 1 further comprises an electromagnetic actuator unit 20 to actuate the valve needle 11.
  • the actuator unit 20 comprises an armature 21 which may be fixed to the needle 11 or coupled to the needle 11 in some other way to cause the needle 11 to move axially in the cavity 9 in response to a magnetic field.
  • the actuator unit 20 further comprises a coil 23 which may be energized to induce a magnetic field. The magnetic field acts on the armature 21 to cause it to travel upwards and take the needle 11 with it against the force of the calibration spring 25. Thus, the ball 13 leaves the valve seat and fuel is released through the fluid outlet portion 7.
  • the injection valve 1 further comprises a pole piece 27 which serves to direct the magnetic field. Other magnetic components of the injection valve 1 contribute to directing the magnetic field, too.
  • a metal housing 29 is arranged around the valve body 4 enclosing the coil 23 and being fixed to the valve assembly 3 by means of a plastic housing 31.
  • the metal housing 29, the coil 23 and the plastic housing 31 are, thus, comprised by an integrally formed power group module of the fuel injection valve.
  • the housing 29 is made of stainless steel, in particular ferritic or martensitic stainless steel, and is therefore magnetic. Thus, the housing 29 contributes to the magnetic performance of the injection valve 1. More Specifially, the housing 29 is operable to guide magnetic flux generetad by the coil 23 in operation in axial direction along the coil 23 on the side of the coil facing away from the valve body 4 and in radial direction towards the armature 21. Therefore, the housing 29 axially overlaps the pole piece 27, the coil 23 and the armatuare 21.
  • the housing 29 is at least partially formed of laminated metal, that is multiple layers of metal .
  • the layers extend perpendicular to the radial direction with respect to the central longitudinal axis L, thereby reducing the occurrence of eddy currents .
  • FIG. 2 shows a partial section of the housing 29 according to figure 1.
  • the housing 29 comprises two separate parts, which are joined together by laser welding.
  • the first part of the housing 29 is the mantle part 33 which is laminated and consists of multiple layers 37 of metal.
  • the mantle part 33 has the shape of a hollow cylinder extending coaxially with the coil 23 and the valve body 4 around the central longitudinal axis L. In this way, a good axial guidance of the magnetic flux is enabled in the mantle part 33, while eddy currents in the mantle part 33 may be particularly small.
  • the layers 37 may be formed by a single metal sheet which is wrapped around the central longitudinal axis L in a number of turns. However, the layers 37 may also be formed by a number of cylindrical metal parts of different diameters. In the embodiment shown in figures 1 to 3, the layers 37 are formed by a single sheet of metal which is wrapped around the central longitudinal axis L. This embodiment is easy to manufacture.
  • the second part of the housing 29 is the washer part 35 which forms a base of the housing 29 and extends radially from the valve body 4.
  • the washer part 35 has an inner surface 39 which contacts the valve body 4 when the injection valve 1 is assembled.
  • the mantle part 33 is arranged on an upper side 41 of the washer part 35.
  • the washer part 35 is not laminated, but massive and can be manufactured by stamping. In this way, it advantageously enables a good guidance of the magnetic flux in radial direction towards the armature 21. Therefore, the washer part 35 may expediently axially overlap the armature 21.
  • the washer part 35 and the mantle part 33 are joined together by laser welding before the injection valve 1 is assembled.
  • Figure 3 shows a perspective view of the mantle part 33 of the housing 29. From this figure, it can be seen that the mantle part 33 has the form of a hollow cylinder and that according to this embodiment, it is formed by a single metal sheet 43 which is wrapped around the central longitudinal axis L several times, thereby forming multiple layers 37.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

Fuel injection valve (1), comprising - a valve body (4) with a central longitudinal axis (L) comprising a cavity (9) with a fluid inlet portion (5) and a fluid outlet portion (7), - a valve needle (11) axially moveable in the cavity (9), the valve needle (11) preventing a fluid flow through the fluid outlet portion (7) in a closing position and releasing the fluid flow through the fluid outlet portion (7) in further positions, - an electro-magnetic actuator unit (20) for actuating the valve needle (11), - a metal housing (29) being partially arranged around the valve body (4) and the electromagnetic actuator unit (20), wherein the metal housing (29) is at least partially laminated.

Description

Description
Fuel injection valve The present disclosure relates to a fuel injection valve for injecting fuel directly or indirectly into an internal combustion engine of a vehicle.
Fuel injection valves typically have a valve body of stainless steel comprising a cavity with a fluid inlet portion and a fluid outlet portion and a valve needle axially movable in the cavity. The valve needle is actuated by an electromagnetic actuator unit which has an armature connected to the valve needle and movable in the cavity.
The electromagnetic actuator unit further comprises a coil which can be energized to move the armature. Pole pieces made of a material of high magnetic permeability serve to direct the magnetic field. Other metal parts of the injection valve can influence the magnetic field likewise and have an impact on the performance of the injection valve.
It is an object of the present invention to provide a fuel injection valve with a better magnetic performance. In par- ticular, magnetic losses shall be minimised.
This object is achieved by means of a fuel injection valve having the features of claim 1. Advantageous embodiments and developments of the fuel injection valve are specified in the dependent claims, the following description and the drawings. According to an aspect of the invention, a fuel injection valve is provided comprising a valve body with a central longitudinal axis . The valve body comprises a cavity with a fluid inlet portion and a fluid outlet portion. In particular, the cavity is defined by an interior surface of the hollow valve body. The fuel injection valve further comprises a valve needle axially movable in the cavity, i.e. the valve needle is received in the cavity and axially movable with respect to the valve body. The valve needle prevents a fluid flow through the fluid outlet portion in a closing position and releases the fluid flow through the fluid outlet portion in further positions.
The fuel injection valve further comprises an electromagnetic actuator unit being operable to actuate the valve needle.
A metal housing is partially arranged around the valve body and the electromagnetic actuator unit. The metal housing is at least partially laminated. The housing may expediently represent a magnetic yoke for guiding magnetic flux of the electromagnetic actuator unit. In par¬ ticular, the electromagnetic actuator unit comprises an armature which is fixed to the needle or coupled to the needle by a form-fit and/or force-fit connection to cause the needle to move axially in the cavity in response to a magnetic field generated when the coil is energized. The housing may expediently be operable to guide the magnetic field towards the armature.
By the housing being at least partially laminated it is understood that at least a part of the housing is made of multiple layers of metal.
Typically, the housing is arranged around the valve body to receive the actuator unit, in particular the coil and part of its power supply. The housing is made of a metal, e.g. stainless steel, for example by a turning manufacturing technology.
The fuel injection valve according to the present invention has the advantage, that due to the laminated design of the housing eddy currents are minimized. Thus, magnetic losses can be reduced and the overall magnetic performance of the injector can be improved . In one embodiment, the housing may be overmoulded, preferably to be permanently connected to the valve body. Additionally or alternatively, a press-fit connection may be established between the housing and the valve body for permanently connecting the housing to the valve body.
Preferably, the housing is comprised by an integrally formed power group module of the fuel injection valve. The power group module may expediently comprise the housing, the coil and a plastic part - the plastic part being in particular produced by overmolding the housing and the coil. That the power group module is "integrally formed" means in particular that it cannot be nondestructively disassembled. The plastic part preferably comprises an electrical connector for connecting the coil to an electronic control unit. The power group module may be per- manently connected to the valve body by means of the overmolded plastic part fixing the module to the valve body and/or by a press-fit connection with the valve body, e.g. between the housing and the valve body. According to an embodiment, a laminated part of the housing comprises a plurality of single layers which extend perpendicular to the radial direction with respect to the central longitudinal axis L of the injection valve. In other words, the single layers follow one another in radial direction. This has the advantage that the orientation of the layers effectively helps to reduce eddy currents, which tend to occur in radial direction in the housing.
According to an embodiment, the housing is at least partially formed by a wrapped metal sheet. By this it is understood that at least a part of the housing is formed by a metal sheet which is wound around an axis. In particular, a metal sheet can be wound around the central longitudinal axis L of the valve body.
This has the advantage, that eddy currents, which typically occur in radial direction, cannot propagate but would have to travel along the turns of the wrapped housing increasing the total length of travel. Thus, magnetic losses due to eddy currents can be minimized.
Furthermore, a housing formed by a wrapped metal sheet can be manufactured easily and at low cost.
The housing may consist entirely of metal. This may be ad¬ vantageous for assembling the housing, including e.g. producing of welded and/or soldered connections. Alternatively, the single layers are metal layers which alternate with insulating layers. In another development, the wrapped metal sheet is laminated with an insulating layer. For example, the metal layers or the metal sheet, respectively, are/is coated with an insulating film. In this way a particular high resistance between the metal layers or the turns of the wrapped metal sheet is achievable and the eddy currents may be particularly small.
According to an embodiment of the invention, the metal sheet has a thickness of 0.05 mm to 0.2 mm, the limits being included. Such a sheet may be wound in 5 to 40 turns, the limits being included, to build up a housing of the required thickness which may be in the order of 1.6 mm.
According to an embodiment, the housing comprises a mantle part extending around the valve body and surrounding the electro¬ magnetic actuator unit, the mantle part being laminated. The mantle part can also be denoted as a peripheral part. The housing further comprises a washer part forming the base of the housing and extending radially from the valve body. The washer part may be in the shape of a disc having a main plane of extension which is perpendicular to the longitudinal axis. One axial end of the mantle part may expediently adjoin the washer part.
According to this embodiment, the housing has at least two separate parts which may be joined for example by laser welding. One part of the housing, the mantle part, can be easily man¬ ufactured in the laminated design, for example by wrapping a metal sheet . The second part, the washer part, would be more difficult to manufacture in a laminated fashion. However, this part typically has a lower contribution to the magnetic performance of the valve. Therefore, the washer part may be massive and may be produced by a process like stamping.
This embodiment has the advantage, that the housing can be manufactured easily and at low cost.
According to an embodiment of the invention, at least the laminated part of the housing is made of ferritic or martensitic stainless steel. These materials are suited for the use in an injection valve and are magnetic. Further advantages, advantageous embodiments and developments of the valve assembly for an injection valve, the fluid injection valve and the engine will become apparent from the exemplary embodiments which are described below in association with the schematic figures.
Figure 1 shows a cross-section of a fuel injection valve with a housing according to an embodiment of the invention; Figure 2 shows a partial cross-section of the housing according to figure 1 and
Figure 3 shows a perspective view of a first part of the housing according to figure 2.
Figure 1 shows an injection valve 1 for the injection of fuel into an internal combustion engine. The injection valve 1 comprises a valve assembly 3 with a valve body 4 with a central longitudinal axis L. The valve body 4 comprises a cavity 9 with a fluid inlet portion 5 and a fluid outlet portion 7.
A valve needle 11 is arranged axially movable in the cavity 9. The valve needle 11 prevents a fluid flow through the fluid outlet portion 7 in a closing position. To achieve this, the needle 11 has a ball 13 welded to its lower end which interacts with a valve seat (not shown in detail) of the valve body 4.
The injection valve 1 further comprises an electromagnetic actuator unit 20 to actuate the valve needle 11. The actuator unit 20 comprises an armature 21 which may be fixed to the needle 11 or coupled to the needle 11 in some other way to cause the needle 11 to move axially in the cavity 9 in response to a magnetic field. The actuator unit 20 further comprises a coil 23 which may be energized to induce a magnetic field. The magnetic field acts on the armature 21 to cause it to travel upwards and take the needle 11 with it against the force of the calibration spring 25. Thus, the ball 13 leaves the valve seat and fuel is released through the fluid outlet portion 7.
When the magnetic field ceases, the valve needle 11 is moved downwards by the force of the calibration spring 25 and the fluid outlet portion 7 is closed again. The injection valve 1 further comprises a pole piece 27 which serves to direct the magnetic field. Other magnetic components of the injection valve 1 contribute to directing the magnetic field, too. A metal housing 29 is arranged around the valve body 4 enclosing the coil 23 and being fixed to the valve assembly 3 by means of a plastic housing 31.
The metal housing 29, the coil 23 and the plastic housing 31 are, thus, comprised by an integrally formed power group module of the fuel injection valve.
The housing 29 is made of stainless steel, in particular ferritic or martensitic stainless steel, and is therefore magnetic. Thus, the housing 29 contributes to the magnetic performance of the injection valve 1. More Specifially, the housing 29 is operable to guide magnetic flux generetad by the coil 23 in operation in axial direction along the coil 23 on the side of the coil facing away from the valve body 4 and in radial direction towards the armature 21. Therefore, the housing 29 axially overlaps the pole piece 27, the coil 23 and the armatuare 21.
The housing 29 is at least partially formed of laminated metal, that is multiple layers of metal . In particular, the layers extend perpendicular to the radial direction with respect to the central longitudinal axis L, thereby reducing the occurrence of eddy currents .
Figure 2 shows a partial section of the housing 29 according to figure 1. The housing 29 comprises two separate parts, which are joined together by laser welding.
The first part of the housing 29 is the mantle part 33 which is laminated and consists of multiple layers 37 of metal. The mantle part 33 has the shape of a hollow cylinder extending coaxially with the coil 23 and the valve body 4 around the central longitudinal axis L. In this way, a good axial guidance of the magnetic flux is enabled in the mantle part 33, while eddy currents in the mantle part 33 may be particularly small.
The layers 37 may be formed by a single metal sheet which is wrapped around the central longitudinal axis L in a number of turns. However, the layers 37 may also be formed by a number of cylindrical metal parts of different diameters. In the embodiment shown in figures 1 to 3, the layers 37 are formed by a single sheet of metal which is wrapped around the central longitudinal axis L. This embodiment is easy to manufacture.
The second part of the housing 29 is the washer part 35 which forms a base of the housing 29 and extends radially from the valve body 4. The washer part 35 has an inner surface 39 which contacts the valve body 4 when the injection valve 1 is assembled. On an upper side 41 of the washer part 35, the mantle part 33 is arranged. The washer part 35 is not laminated, but massive and can be manufactured by stamping. In this way, it advantageously enables a good guidance of the magnetic flux in radial direction towards the armature 21. Therefore, the washer part 35 may expediently axially overlap the armature 21. The washer part 35 and the mantle part 33 are joined together by laser welding before the injection valve 1 is assembled.
Figure 3 shows a perspective view of the mantle part 33 of the housing 29. From this figure, it can be seen that the mantle part 33 has the form of a hollow cylinder and that according to this embodiment, it is formed by a single metal sheet 43 which is wrapped around the central longitudinal axis L several times, thereby forming multiple layers 37.

Claims

Patent Claims
1. Fuel injection valve (1), comprising
- a valve body (4) with a central longitudinal axis (L) comprising a cavity (9) with a fluid inlet portion (5) and a fluid outlet portion (7),
- a valve needle (11) axially moveable in the cavity (9) , the valve needle (11) preventing a fluid flow through the fluid outlet portion (7) in a closing position and releasing the fluid flow through the fluid outlet portion (7) in further positions ,
- an electro-magnetic actuator unit (20) for actuating the valve needle (11),
- a metal housing (29) being partially arranged around the valve body (4) and the electromagnetic actuator unit (20), wherein the metal housing (29) is at least partially laminated,
wherein a laminated part of the housing (29) comprises a plurality of single metal layers (37) which extend per¬ pendicular to the radial direction with respect to the central longitudinal axis L or the housing (29) is at least partially formed by a wrapped metal sheet (43)
and wherein the housing (29) comprises
- a mantle part (33) extending around the valve body (4) and surrounding the electromagnetic actuator unit (20), the mantle part (33) being laminated, and
- a washer part (35) forming the base of the housing (29) and extending radially from the valve body (4) .
2. Fuel injection valve (1) according to the preceding claim, wherein the washer part (35) is not laminated, but massive.
3. Fuel injection valve (1) according to any of the preceding claims , wherein the metal sheet (43) has a thickness of 0.05 mm to 0.2 mm, the limits being included.
Fuel injection valve (1) according to the preceding claim, wherein the metal sheet (43) is wound in 5 to 40 turns, the limits being included.
Fuel injection valve (1) according to any of the preceding claims, wherein the housing (29) represent a magnetic yoke for guiding magnetic flux of the electromagnetic actuator unit (20) .
Fuel injection valve (1) according to any of the preceding claims ,
wherein the electro-magnetic actuator unit (20) comprises an armature (21) for actuating the valve needle (11) and the washer part (35) axially overlaps the armature (21) .
Fuel injection valve (1) according to any of the preceding claims, wherein the housing (29) is comprised by an in¬ tegrally formed power group module of the fuel injection valve (1) which comprise the housing (29) , a coil (23) of the electromagnetic actuator unit (20) and a plastic part produced by overmolding the housing (29) and the coil (23) .
Fuel injection valve (1) according to any of the preceding claims ,
wherein at least the laminated part of the housing (29) is made of a ferritic or martensitic stainless steel.
EP18778952.4A 2017-10-12 2018-10-04 Fuel injection valve Active EP3695110B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP17196140 2017-10-12
PCT/EP2018/077027 WO2019072683A1 (en) 2017-10-12 2018-10-04 Fuel injection valve

Publications (2)

Publication Number Publication Date
EP3695110A1 true EP3695110A1 (en) 2020-08-19
EP3695110B1 EP3695110B1 (en) 2021-09-01

Family

ID=60083197

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18778952.4A Active EP3695110B1 (en) 2017-10-12 2018-10-04 Fuel injection valve

Country Status (2)

Country Link
EP (1) EP3695110B1 (en)
WO (1) WO2019072683A1 (en)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5238192A (en) * 1991-12-18 1993-08-24 Siemens Automotive L.P. Filter for solenoid operated fluid metering devices
DE10337892A1 (en) * 2003-08-18 2005-03-17 Daimlerchrysler Ag Fuel injector
US7258287B2 (en) * 2004-06-03 2007-08-21 Siemens Vdo Automotive Corporation Modular fuel injector with a spiral damper member and method of reducing noise
JP2007162678A (en) * 2005-11-16 2007-06-28 Toyota Motor Corp Fuel injection valve
US20070113828A1 (en) * 2005-11-22 2007-05-24 Fonville Carl E Fuel injector isolating and sealing member
DE102006055088B4 (en) * 2006-11-21 2008-12-04 Vacuumschmelze Gmbh & Co. Kg Electromagnetic injection valve and method for its manufacture and use of a magnetic core for an electromagnetic injection valve
DE102008004246A1 (en) * 2008-01-14 2009-07-16 Robert Bosch Gmbh Piezoelectric actuator module for fuel injection system of air-compressing, self-igniting internal-combustion engine, has balancing channel of adapter piece connecting interspace with environment and filled with extreme pressure additive
DE102012206890A1 (en) * 2012-04-26 2013-10-31 Robert Bosch Gmbh Arrangement with a fuel distributor and a plurality of fuel injection valves
US20160160822A1 (en) * 2014-12-04 2016-06-09 Keihin Corporation Vibration insulating structure of fuel injection valve in internal combustion engine

Also Published As

Publication number Publication date
EP3695110B1 (en) 2021-09-01
WO2019072683A1 (en) 2019-04-18

Similar Documents

Publication Publication Date Title
JP4589387B2 (en) Injection valve for fuel injection
JP4790441B2 (en) Electromagnetic fuel injection valve and method of assembling the same
US20090301442A1 (en) Fuel injector
EP1463885B1 (en) Fuel injector having a ferromagnetic coil bobbin
US8228150B2 (en) Electromagnetic actuating apparatus
JP2001525905A (en) Electromagnetically operable valve
US9068542B2 (en) Fuel injector
JP3884310B2 (en) Electromagnetic fuel injection valve
JP2002213321A (en) Modular fuel injector having a surface treatment on the impact surface of the electromagnetic actuator and having a lift set sleeve
JP6049903B2 (en) Fuel injection valve and method of manufacturing fuel injection valve
US6042082A (en) Electromagnetically actuated valve
KR20130042556A (en) Magnetic actuator
JP2011094632A (en) Solenoid fuel injection valve and method for assembling the same
EP3695110A1 (en) Fuel injection valve
JP4143097B2 (en) Electromagnetic fuel injection valve
JP5101705B2 (en) Fuel injection valve
JP6025975B2 (en) Method for manufacturing a housing, in particular a valve housing
JP5114571B2 (en) Solenoid operated valve
US9865385B2 (en) Linear solenoid
JP4881883B2 (en) Fuel injection valve
JP4584895B2 (en) Electromagnetic fuel injection valve
JP2005282564A (en) Fuel injection valve
JP7784539B2 (en) Electromagnetic fuel injection valve
JP6655575B2 (en) Electromagnetic fuel injection valve
JP6721268B2 (en) Fuel injection valve

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20200512

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20210420

RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: VITESCO TECHNOLOGIES GMBH

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: AT

Ref legal event code: REF

Ref document number: 1426495

Country of ref document: AT

Kind code of ref document: T

Effective date: 20210915

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602018022969

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

RAP4 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: VITESCO TECHNOLOGIES GMBH

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20210901

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 602018022969

Country of ref document: DE

Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, DE

Free format text: FORMER OWNER: VITESCO TECHNOLOGIES GMBH, 30165 HANNOVER, DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 602018022969

Country of ref document: DE

Owner name: VITESCO TECHNOLOGIES GMBH, DE

Free format text: FORMER OWNER: VITESCO TECHNOLOGIES GMBH, 30165 HANNOVER, DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210901

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210901

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210901

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210901

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210901

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210901

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211201

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211201

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1426495

Country of ref document: AT

Kind code of ref document: T

Effective date: 20210901

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210901

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210901

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211202

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210901

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220101

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210901

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210901

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210901

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220103

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210901

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210901

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210901

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210901

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602018022969

Country of ref document: DE

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20211031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210901

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211004

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210901

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210901

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211031

26N No opposition filed

Effective date: 20220602

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210901

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211031

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211004

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20221004

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210901

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230530

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20181004

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221004

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210901

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210901

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210901

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 602018022969

Country of ref document: DE

Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, DE

Free format text: FORMER OWNER: VITESCO TECHNOLOGIES GMBH, 93055 REGENSBURG, DE

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20251031

Year of fee payment: 8