WO2015106866A1 - Bobbin with venting conduit - Google Patents

Bobbin with venting conduit Download PDF

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Publication number
WO2015106866A1
WO2015106866A1 PCT/EP2014/075492 EP2014075492W WO2015106866A1 WO 2015106866 A1 WO2015106866 A1 WO 2015106866A1 EP 2014075492 W EP2014075492 W EP 2014075492W WO 2015106866 A1 WO2015106866 A1 WO 2015106866A1
Authority
WO
WIPO (PCT)
Prior art keywords
bobbin assembly
bobbin
venting conduit
over
moulding
Prior art date
Application number
PCT/EP2014/075492
Other languages
French (fr)
Inventor
Anthony Piton
Philippe Barbier
Thierry Thibault
Original Assignee
Delphi International Operations Luxembourg S.À R.L.
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 Delphi International Operations Luxembourg S.À R.L. filed Critical Delphi International Operations Luxembourg S.À R.L.
Priority to EP14806214.4A priority Critical patent/EP3094853B1/en
Priority to KR1020167021886A priority patent/KR102204703B1/en
Priority to CN201480077185.4A priority patent/CN106133305B/en
Publication of WO2015106866A1 publication Critical patent/WO2015106866A1/en

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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/002—Arrangement of leakage or drain conduits in or from injectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • F02M63/0017—Valves characterised by the valve actuating means electrical, e.g. using solenoid 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/50—Arrangements of springs for valves used in fuel injectors or fuel injection pumps

Definitions

  • the present invention relates to a fuel injector and has particular but not exclusive application to fuel injectors for use in delivering fuel under pressure to a combustion space of an internal combustion engine.
  • a known fuel injector for use in such a fuel system is illustrated in fig 1 and includes a nozzle needle 10 slidable within a bore.
  • the needle 10 is slipping within a bore formed in a nozzle body 17 and engageable with a seating to control fuel delivery through one or more outlet openings. Movement of the nozzle needle 10 occurs rapidly, in use, the periods during which fuel injection occurs being of short duration.
  • the movement of the needle is controlled using two chambers, a high pressure control chamber 12 and a low pressure chamber 16, which communicates with low pressure drain reservoir 22.
  • an actuator 30 is energized (opening phase), which urges an armature 29 and a valve member 25 in contact therewith, identified as a control valve 15, located in the chamber to move upwards against the action of a bobbin spring 33 of the actuator 30.
  • the length of the spring 33 is reduced and then the pressure within the bobbin spring area 43 increases, thus there is a movement of the fluid in the spring area 43 which perturbs the displacement of the armature 29 secured to the valve member 25 .
  • a bobbin assembly of an electromagnetic actuator is adapted to be in a fuel injector.
  • the bobbin assembly comprises a core extending along a main axis, a wire coil arranged around the core.
  • the coil is over-moulded so that it has a cylindrical external surface extending axially from a first surface to a second surface and an axial blind bore extending axially and inwardly inside the bobbin assembly from the first surface to the distal end.
  • the blind bore is adapted to accommodate a spring for biasing a magnetic armature.
  • the bobbin assembly is provided with a venting conduit extending through the over-moulding from the blind axial bore to the external cylindrical surface.
  • venting conduit is arranged proximal to the distal end.
  • venting conduit is proximal to the first face of the bobbin and comprises at least one grove in the first radial surface. Besides the venting conduit makes an angle with the main axis between 80 degrees and 120 degrees. Additionally the angle can be preferably 90 degrees.
  • the actuator of the fuel injector comprises the bobbin assembly and the fuel injector comprises the actuator .
  • a method for process manufacturing of the bobbin assembly comprises the following steps:
  • venting conduit is made by drilling the venting conduit in the over-moulding.
  • Fig 1 is a sectional view of the overall assembly of a known injector
  • Fig 2 and Fig 3 are the sectional views of a fuel injector with the venting conduit in different phases (opening).
  • Figure 4 is a sectional view of the bobbin assembly area and the venting conduit.
  • Fig 5 is a sectional view of a inclined venting conduit
  • Fig 6 and Fig 7 are the sectional views of the manufacturing the bobbin assembly.
  • a known fuel injector for use in such a fuel system in illustrated in fig 1 and includes a valve needle 10 slidable within a bore 11.
  • the bore 11 takes the form of a blind bore formed in a nozzle body 17; the bore 11 is supplied with fuel under high pressure.
  • the needle 10 includes a surface exposed to the fuel pressure within a control chamber 12.
  • the control chamber 12 is supplied with fuel under high pressure from a supply passage 13 dimensioned such that fuel is only permitted to flow to the control chamber 12 at a restricted rate.
  • a spring 20 is located within the control chamber 12, the spring acting to apply a biasing force to the needle 10 urging the needle 10 into engagement with the seating.
  • a high pressure control chamber 12 which communicates with low pressure drain reservoir 22.
  • an actuator 30, which comprises a bobbin assembly 44 and a control valve 15, is energized (opening phase), which urges an armature 29 and a valve member 25 in contact therewith, identified as a control valve 15, located in the chamber 16 to move upwards against the action of a bobbin spring 33 of the actuator 30, lifting the valve member 25 away for its seating.
  • EMBODIEMENT FIGURES 2, 3, 4, 5, 6 and 7.
  • control chamber 12 is supplied with fuel from an INO orifice 52, conduit which supplied fuel from the common rail (not shown), through a hemispheric part 50, dimensioned such that fuel is only permitted to flow to the control chamber 12 at a restricted rate.
  • the spring 20 is within the control chamber 12, the spring 20 acting to apply a biasing force to the needle 10, urging the needle 10 into engagement with its seating.
  • fuel is able to escape from the control chamber 12 to the chamber 16 (fig 3) which is at a low pressure, through an hemispheric part 51 and then through a spill canal SPO 54 (figure 3), and then the fuel escape from the chamber 16 to a return passage 27 (figure 3).
  • the control chamber 12 there are 2 orifices; one is the INO orifice 52 (fig 2) which fills in the chamber 12 with fuel and the SPO orifice 54 (fig 3) which empty the chamber of its fluid. Then the ratio INO/SPO is calculated in order to empty quicker than to fill-in.
  • the actuator spring 33 When the actuator 30 is energized, the actuator spring 33 is compressed by the pressure urged by the armature 29, thus the pressure in an axial blind bore 43 increases.
  • the length of the spring 33 is reduced so the volume of the axial bore 43 is reduced so the pressure increases.
  • the overpressure within the axial bore 43 is suppressed by a venting conduit 42 which is fluidically connected to the axial bore 43 by one end and by the other end to a low pressure area 41, which communicates to a return circuit 40.
  • the venting conduit 42 is within an over-moulded coil 96, from the axial bore (43), which is the area of the spring 33, to the external cylindrical surface (108)
  • venting conduit 42 is at the proximal portion of upper part of the axial bore 43. Moreover the venting conduit 42 make an angle of 90 degree to the main axis of the injector 5 and the shape of the venting conduit 42 is round or square or conical.
  • the venting conduit 42 is made by machining, drilling or with the use of an insert during the over moulding 96 of the bobbin assembly 44. In a further embodiment, the venting conduit 42, makes an angle, for instance between 80 degrees and 120 degrees from the main axis (vertical) of the injector 5 and the shape of the venting conduit 42 is round or square or conical.
  • the venting hole is made by machining, drilling or with the use of an insert during the over-moulding 96 of the bobbin assembly 44.
  • the manufacturing process is now described.
  • the bobbin assembly 44 includes the sub assembly 90 which includes a coil 92, two terminals 94, an over moulding 96 and a jacket 98.
  • the bobbin assembly 44 starts with the following steps:
  • venting conduit (42) by the use of insert in the over moulding phase of the bobbin assembly (44) or by drilling after the over-moulding of the bobbin assembly.

Abstract

BOBBIN WITH VENTING CONDUIT ABSTRACT OF THE DISCLOSURE Bobbin assembly (44) of an electromagnetic actuator (30), adapted to be in a fuel injector (5), the bobbin assembly (44) comprising: -a core (93) extending along a main axis -a wire coil (92) arranged around the core (93), the coil being over-moulded so that it has a cylindrical external surface (108) extending axially from a first surface (104) to a second surface and, -an axial blind bore (43) extending axially and inwardly inside the bobbin assembly (44) from the first surface (104) to the distal end (106), the blind bore (43) adapted to accommodate a spring (33) for biasing a magnetic armature; characterizedin that: the bobbin assembly (44) is further provided with a venting conduit (42) extending through the over-moulding (96) from the blind axial bore (43) to the external cylindrical surface (108). Figure 4

Description

Bobbin with venting conduit
TECHNICAL FIELD
The present invention relates to a fuel injector and has particular but not exclusive application to fuel injectors for use in delivering fuel under pressure to a combustion space of an internal combustion engine.
BACKGROUND OF THE INVENTION
A known fuel injector for use in such a fuel system is illustrated in fig 1 and includes a nozzle needle 10 slidable within a bore. The needle 10 is slipping within a bore formed in a nozzle body 17 and engageable with a seating to control fuel delivery through one or more outlet openings. Movement of the nozzle needle 10 occurs rapidly, in use, the periods during which fuel injection occurs being of short duration.
The movement of the needle is controlled using two chambers, a high pressure control chamber 12 and a low pressure chamber 16, which communicates with low pressure drain reservoir 22. When injection starts, an actuator 30 is energized (opening phase), which urges an armature 29 and a valve member 25 in contact therewith, identified as a control valve 15, located in the chamber to move upwards against the action of a bobbin spring 33 of the actuator 30. At this stage, the length of the spring 33 is reduced and then the pressure within the bobbin spring area 43 increases, thus there is a movement of the fluid in the spring area 43 which perturbs the displacement of the armature 29 secured to the valve member 25 . This problem will be solved by the present invention, which will further be described. SUMMARY OF THE INVENTION
A bobbin assembly of an electromagnetic actuator is adapted to be in a fuel injector. The bobbin assembly comprises a core extending along a main axis, a wire coil arranged around the core. The coil is over-moulded so that it has a cylindrical external surface extending axially from a first surface to a second surface and an axial blind bore extending axially and inwardly inside the bobbin assembly from the first surface to the distal end. Moreover the blind bore is adapted to accommodate a spring for biasing a magnetic armature. Furthermore the bobbin assembly is provided with a venting conduit extending through the over-moulding from the blind axial bore to the external cylindrical surface.
In addition the venting conduit is arranged proximal to the distal end.
Moreover the venting conduit is proximal to the first face of the bobbin and comprises at least one grove in the first radial surface. Besides the venting conduit makes an angle with the main axis between 80 degrees and 120 degrees. Additionally the angle can be preferably 90 degrees. In addition the actuator of the fuel injector comprises the bobbin assembly and the fuel injector comprises the actuator . A method for process manufacturing of the bobbin assembly comprises the following steps:
- winding of the wire on the sub assembly, wrapping of the wire on one end of the terminals, an installation of the covers on the wrapping , welding of the covers , fit of a jacket on the area of the wire winding, then over-moulding and grinding of the bobbin assembly and providing the venting conduit in the over- moulding of the bobbin assembly. Moreover the venting conduit is made by drilling the venting conduit in the over-moulding.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig 1 is a sectional view of the overall assembly of a known injector
Fig 2 and Fig 3 are the sectional views of a fuel injector with the venting conduit in different phases (opening).
Figure 4 is a sectional view of the bobbin assembly area and the venting conduit. Fig 5 is a sectional view of a inclined venting conduit
Fig 6 and Fig 7 are the sectional views of the manufacturing the bobbin assembly.
DESCRIPTION OF THE PREFERRED EMBODIMENTS PRIOR ART (Fig 1)
In the following description, similar parts will be described by the same references. To be concise and for clarity of the description, the upper and lower orientation will be used as the orientation of the figures with no limitation for the scope of the protection, in particular in regard to the different embodiments. Words like "upper, lower, top bottom... "will be used without limitative intent.
According to a known fuel injector for use in such a fuel system in illustrated in fig 1 and includes a valve needle 10 slidable within a bore 11. The bore 11 takes the form of a blind bore formed in a nozzle body 17; the bore 11 is supplied with fuel under high pressure. The needle 10 includes a surface exposed to the fuel pressure within a control chamber 12. The control chamber 12 is supplied with fuel under high pressure from a supply passage 13 dimensioned such that fuel is only permitted to flow to the control chamber 12 at a restricted rate.
A spring 20 is located within the control chamber 12, the spring acting to apply a biasing force to the needle 10 urging the needle 10 into engagement with the seating.
The movement of the needle is controlled using two chambers, a high pressure control chamber 12 and a low pressure chamber 16, which communicates with low pressure drain reservoir 22. When injection starts, an actuator 30, which comprises a bobbin assembly 44 and a control valve 15, is energized (opening phase), which urges an armature 29 and a valve member 25 in contact therewith, identified as a control valve 15, located in the chamber 16 to move upwards against the action of a bobbin spring 33 of the actuator 30, lifting the valve member 25 away for its seating. As a result, fuel is able to escape from the control chamber 12 to the chamber 16 which is at a low pressure, due to its connection with the low pressure reservoir by a return passage 27 (not shown in figures) .As a result, the fuel pressure in the control chamber 12 falls, and as a result, the force applied to the needle 10 urging the needle 10 to is seating also falls. A point will be reached beyond which the fuel pressure acting upon a thrust surface 10a is sufficient to lift the needle 10 away from its seating, and permitting fuel from the bore 11 to flow past the seating to the outlet openings and into the combustion space with which the injector is associated.
EMBODIEMENT: FIGURES 2, 3, 4, 5, 6 and 7.
As illustrated in figure 2, when the electromagnetic control valve 15 is not energized, the valve member 25 engages its seating 46, and then the bore 11 and the control chamber 12 will contain fluid under high pressure. The action of the high pressure in the control chamber 12 and the action of the spring 20 is sufficient to ensure that the needle 10 remains in engagement in its seating and the injector 5 is closed with no injection of fluid.
As illustrated in figure 2, the control chamber 12 is supplied with fuel from an INO orifice 52, conduit which supplied fuel from the common rail (not shown), through a hemispheric part 50, dimensioned such that fuel is only permitted to flow to the control chamber 12 at a restricted rate. The spring 20 is within the control chamber 12, the spring 20 acting to apply a biasing force to the needle 10, urging the needle 10 into engagement with its seating.
As illustrated in figure 3, when the injection is to start, an actuator 30, which includes the control valve 15 and a bobbin assembly 44 which includes a sub assembly 90, is energized, urging the armature 29 and valve member 25 to move upwards against the action of the spring 33, lifting the valve member 25 away for its seating. As a result, fuel is able to escape from the control chamber 12 to the chamber 16 (fig 3) which is at a low pressure, through an hemispheric part 51 and then through a spill canal SPO 54 (figure 3), and then the fuel escape from the chamber 16 to a return passage 27 (figure 3).
In the control chamber 12, there are 2 orifices; one is the INO orifice 52 (fig 2) which fills in the chamber 12 with fuel and the SPO orifice 54 (fig 3) which empty the chamber of its fluid. Then the ratio INO/SPO is calculated in order to empty quicker than to fill-in.
A first embodiment is now described in reference to figure 4.
When the actuator 30 is energized, the actuator spring 33 is compressed by the pressure urged by the armature 29, thus the pressure in an axial blind bore 43 increases. During the opening phase of the control valve 15, the length of the spring 33 is reduced so the volume of the axial bore 43 is reduced so the pressure increases. The armature 29, moving upwards, urges the fluid in the axial bore 43, which is a blind bore and the fluid wave moves back downwards to the armature 29 and the fluid wave perturbs the control valve 15. The overpressure within the axial bore 43 is suppressed by a venting conduit 42 which is fluidically connected to the axial bore 43 by one end and by the other end to a low pressure area 41, which communicates to a return circuit 40. The venting conduit 42 is within an over-moulded coil 96, from the axial bore (43), which is the area of the spring 33, to the external cylindrical surface (108)
Furthermore the venting conduit 42 is at the proximal portion of upper part of the axial bore 43. Moreover the venting conduit 42 make an angle of 90 degree to the main axis of the injector 5 and the shape of the venting conduit 42 is round or square or conical. The venting conduit 42 is made by machining, drilling or with the use of an insert during the over moulding 96 of the bobbin assembly 44. In a further embodiment, the venting conduit 42, makes an angle, for instance between 80 degrees and 120 degrees from the main axis (vertical) of the injector 5 and the shape of the venting conduit 42 is round or square or conical. The venting hole is made by machining, drilling or with the use of an insert during the over-moulding 96 of the bobbin assembly 44.
In another aspect of the invention, the manufacturing process is now described. As shown in the figure 6 and 7, the bobbin assembly 44 includes the sub assembly 90 which includes a coil 92, two terminals 94, an over moulding 96 and a jacket 98. The bobbin assembly 44 starts with the following steps:
- winding of the wire 92 on the sub assembly 90 and then;
- wrapping of the wire 92 ends on the low end of the terminals 94 and then; - installation of the covers 95 down on the lower ends of the terminals 94 and then;
- welding of the cover 95 on the lower ends of the terminals 94 then;
- fit of a jacket 98 on the area of the wire winding (92) and then;
- over-moulding and grinding of the bobbin assembly (44) ;
- Providing the venting conduit (42) by the use of insert in the over moulding phase of the bobbin assembly (44) or by drilling after the over-moulding of the bobbin assembly.
-Insert of the washer 100 and the joint 102 in the terminal end side of the bobbin assembly (44);

Claims

CLAIMS: 1. Bobbin assembly (44) of an electromagnetic actuator (30), adapted to be in a fuel injector (5), the bobbin assembly (44) comprising:
- a core (93) extending along a main axis
- a wire coil (92) arranged around the core (93), the coil being over-moulded so that it has a cylindrical external surface (108) extending axially from a first surface (104) to a second surface and,
- an axial blind bore (43) extending axially and inwardly inside the bobbin assembly (44) from the first surface (104) to a distal end (106), the blind bore (43) adapted to accommodate a spring (33) for biasing a magnetic armature; characterized in that:
the bobbin assembly (44) is further provided with a venting conduit (42) extending through the over-moulding (96) from the blind axial bore (43) to the external cylindrical surface (108).
2. Bobbin assembly (44) as set in the preceding claim, wherein the venting conduit (42) is arranged proximal to the distal end (106)
3. Bobbin (44) as set in claim 1 , wherein the venting conduit (42) is proximal to the first face (104) of the bobbin (44).
4. Bobbin (44) as set in claim 3, wherein the venting conduit (42) comprises at least one grove in the first radial surface (104).
5. Bobbin assembly (44) as set in preceding claims, wherein the venting conduit (42) makes an angle with the main axis between 80 degrees and 120 degrees.
6. Bobbin assembly (44) as set in claim 5, wherein the angle is 90°.
7. Actuator (30) of the fuel injector (5) comprising the bobbin assembly (44) as set in any of the preceding claims.
8. Fuel injector (5) comprising the actuator (30) as set in claim 7.
9. Method for process manufacturing of a bobbin assembly (44) as set in any one of the preceding claims comprises the following steps:
- winding of the wire (92) on the sub assembly (90) and then;
- wrapping of the wire (92) on one end of the terminals (94) and then;
- installation of the covers on the wrapping and welding of the covers then;
- fit of a jacket (98) on the area of the wire winding (92) and then;
- over-moulding and grinding of the bobbin assembly (44) and then;
-providing the venting conduit (42) in the over-moulding (96) of the bobbin assembly (44);
10. Method as set in claim 9, wherein the venting conduit (42) is made by drilling the venting conduit in the over-moulding (96).
11. Method as set in claim 9, wherein the venting conduit (42) is made by the use of an insert during the over-moulding of the wire.
PCT/EP2014/075492 2014-01-15 2014-11-25 Bobbin with venting conduit WO2015106866A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP14806214.4A EP3094853B1 (en) 2014-01-15 2014-11-25 Bobbin with venting conduit
KR1020167021886A KR102204703B1 (en) 2014-01-15 2014-11-25 Bobbin with venting conduit
CN201480077185.4A CN106133305B (en) 2014-01-15 2014-11-25 Spool with discharge tube

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1400650.6 2014-01-15
GBGB1400650.6A GB201400650D0 (en) 2014-01-15 2014-01-15 Bobbin with venting conduit

Publications (1)

Publication Number Publication Date
WO2015106866A1 true WO2015106866A1 (en) 2015-07-23

Family

ID=50238982

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2014/075492 WO2015106866A1 (en) 2014-01-15 2014-11-25 Bobbin with venting conduit

Country Status (5)

Country Link
EP (1) EP3094853B1 (en)
KR (1) KR102204703B1 (en)
CN (1) CN106133305B (en)
GB (1) GB201400650D0 (en)
WO (1) WO2015106866A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3055370A1 (en) * 2016-09-01 2018-03-02 Delphi International Operations Luxembourg S.A R.L. SPOOL ASSEMBLY
US10408176B2 (en) 2015-07-29 2019-09-10 Delphi Technologies Ip Limited Fuel injector

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007011789A1 (en) * 2007-03-12 2008-09-18 Robert Bosch Gmbh fuel injector
EP2320066A1 (en) * 2009-11-06 2011-05-11 Delphi Technologies Holding S.à.r.l. Electromagnetic actuator
DE102012110240A1 (en) * 2012-10-26 2014-04-30 L'orange Gmbh Fuel injection injector for internal combustion engines

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2336628A (en) * 1998-04-24 1999-10-27 Lucas Ind Plc A fuel injector, for an I.C. engine, having a three way two position needle control valve
DE10031582A1 (en) * 2000-06-29 2002-01-17 Bosch Gmbh Robert Pressure controlled injector with controlled nozzle needle
JP3790711B2 (en) * 2002-03-15 2006-06-28 ボッシュ株式会社 Fuel injector
JP2007040242A (en) * 2005-08-04 2007-02-15 Denso Corp Solenoid valve and fuel injection device using the same, and solenoid valve manufacturing method
DE102006049050A1 (en) * 2006-10-18 2008-04-30 Robert Bosch Gmbh Injector for injecting fuel
US20100096473A1 (en) * 2008-10-20 2010-04-22 Caterpillar Inc. Variable flow rate valve for mechnically actuated fuel injector
HUE025828T2 (en) * 2010-10-20 2016-05-30 Delphi Int Operations Luxembourg Sarl Improved fuel injector

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007011789A1 (en) * 2007-03-12 2008-09-18 Robert Bosch Gmbh fuel injector
EP2320066A1 (en) * 2009-11-06 2011-05-11 Delphi Technologies Holding S.à.r.l. Electromagnetic actuator
DE102012110240A1 (en) * 2012-10-26 2014-04-30 L'orange Gmbh Fuel injection injector for internal combustion engines

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10408176B2 (en) 2015-07-29 2019-09-10 Delphi Technologies Ip Limited Fuel injector
FR3055370A1 (en) * 2016-09-01 2018-03-02 Delphi International Operations Luxembourg S.A R.L. SPOOL ASSEMBLY
WO2018041656A1 (en) * 2016-09-01 2018-03-08 Delphi Technologies Ip Limited Coil assembly
KR20190041522A (en) * 2016-09-01 2019-04-22 델피 테크놀로지스 아이피 리미티드 Coil assembly
CN109790805A (en) * 2016-09-01 2019-05-21 德尔福知识产权有限公司 Coil block
US20190242344A1 (en) * 2016-09-01 2019-08-08 Delphi Technologies Ip Limited Coil assembly
CN109790805B (en) * 2016-09-01 2021-03-16 德尔福知识产权有限公司 Coil component
US10995715B2 (en) 2016-09-01 2021-05-04 Delphi Technologies Ip Limited Coil assembly
KR102337017B1 (en) * 2016-09-01 2021-12-09 델피 테크놀로지스 아이피 리미티드 coil assembly

Also Published As

Publication number Publication date
EP3094853A1 (en) 2016-11-23
CN106133305B (en) 2018-11-20
CN106133305A (en) 2016-11-16
KR102204703B1 (en) 2021-01-20
EP3094853B1 (en) 2020-09-02
GB201400650D0 (en) 2014-03-05
KR20160107287A (en) 2016-09-13

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