CN106133305B - Spool with discharge tube - Google Patents
Spool with discharge tube Download PDFInfo
- Publication number
- CN106133305B CN106133305B CN201480077185.4A CN201480077185A CN106133305B CN 106133305 B CN106133305 B CN 106133305B CN 201480077185 A CN201480077185 A CN 201480077185A CN 106133305 B CN106133305 B CN 106133305B
- Authority
- CN
- China
- Prior art keywords
- discharge tube
- bobbin assemblies
- coil
- blind hole
- bobbin
- 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.)
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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
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- 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
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- 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
Abstract
The present invention relates to a kind of spools with discharge tube.A kind of bobbin assemblies (44) of electromagnetic actuators (30), the electromagnetic actuators are suitable for being located in fuel injector (5), and the bobbin assemblies (44) include：Core (93), the core extend along main shaft；Coil (92), the coil arrange that the coil is overmolded around the core (93), so that the coil has the cylindrical outer surface (108) for axially extending to second surface from first surface (104)；And-axial blind hole (43), the axial blind hole axially inwardly extends to distal end (106) from the first surface (104) in the bobbin assemblies (44), and the axial blind hole (43) is suitable for accommodating the spring for biasing magnetic anchor；It is characterized in that：The bobbin assemblies (44) are additionally provided with discharge tube (42), and the discharge tube passes through over-molded members (96) from the axial blind hole (43) and extends to the cylindrical outer surface (108).
Description
Technical field
The present invention relates to fuel injector and have the burning for the fuel of pressurization to be delivered to internal combustion engine empty
Between fuel injector specific but non-exclusive property application.
Background technique
It is shown in FIG. 1 for the known fuel injector in this fuel system, which includes can be in hole
The nozzle needle 10 of sliding.Sliding and energy engaging base in the hole that nozzle needle 10 is just being formed in nozzle body 17, with control
System is delivered by the fuel that one or more exit openings carry out.Nozzle needle 10 fast moves when in use, occurs
The period of fuel injection is the short duration.
It is controlled using two chambers (high voltage control chamber 12 and the low-pressure chamber 16 being connected to low pressure drain reservoir 22)
The movement of nozzle needle processed.When starting injection, actuator 30 is energized (opening stage), this promotes the armature 29 that contacts with each other to obtain
With the spool spring of valve member 25 (armature 29 and valve member 25 are represented as control valve 15, in a chamber) confrontation actuator 30
33 movement moves up.At this stage, the length of spring 33 reduces, and the pressure in spool spring region 43 then increases
Greatly, therefore in spring region 43 there is fluid mobile, this interferes the displacement for being fixed to the armature 29 of valve member 25.Through the invention,
This problem will be solved, this will be described further.
Summary of the invention
The bobbin assemblies of electromagnetic actuators are suitable for being located in fuel injector.The bobbin assemblies include prolonging along main shaft
The core stretched and the coil around core arrangement.The coil is overmolded, so that the coil has：Cylindrical outer surface,
The cylindrical outer surface axially extends to second surface from first surface；And axial blind hole, the axial blind hole is in the spool group
Distal end axially inwardly is extended to from the first surface in part.In addition, the axial blind hole is suitable for accommodating for biasing magnetism
The spring of armature.In addition, the bobbin assemblies are provided with discharge tube, the discharge tube passes through cladding from the axial blind hole
Molded part extends to the cylindrical outer surface.In addition, the discharge tube is arranged close to the distal end.In addition, the delivery pipe
At least one slot of road in first face of the bobbin assemblies and the first surface including radial direction.Except this it
Outside, the discharge tube and the main shaft are at the angle between 80 degree and 120 degree.In addition, the angle can be 90 °.Separately
Outside, the actuator of the fuel injector includes the bobbin assemblies and the fuel injector includes the actuating
Device.A kind of method fabricating the bobbin assemblies includes the following steps：
Line is wrapped on sub-component；The coil of wire is wound on one end of terminal；Covering is mounted on wrap
On；Weld the covering；By sheath assembly on the region of the line winding group；Then the bobbin assemblies are overmolding to
Type and grinding；And the discharge tube is set in the over-molded members of the bobbin assemblies.In addition, by the cladding
The discharge tube is drilled out in molded part the discharge tube is made.
Detailed description of the invention
Fig. 1 is the cross-sectional view of the black box of known injectors.
Fig. 2 and Fig. 3 is the cross-sectional view that the fuel injector with discharge tube is in different phase (opening).
Fig. 4 is the cross-sectional view of bobbin assemblies region and discharge tube.
Fig. 5 is the cross-sectional view of inclined discharge tube.
Fig. 6 and Fig. 7 is the cross-sectional view for manufacturing bobbin assemblies.
Specific embodiment
The prior art (Fig. 1)
In the following description, similar component will be described with identical reference label.For simplicity and describe clearly
For the sake of, particularly directed to different embodiments, orientation of the orientation as figure up and down will be used, without limiting protection scope.It will
There is no limit be intended to ground to use the word on such as " upper and lower, top, bottom ... ".
For the known fuel injector in this fuel system according to shown in Fig. 1, including what can be slided in hole 11
Needle 10.Take the form for the blind hole being formed in nozzle body 17 in hole 11；Hole 11 is supplied with high pressure fuel.Needle 10 includes sudden and violent
It is exposed to the surface of the fuel pressure in control chamber 12.The fuel under high pressure is supplied from service duct 13 to control chamber 12, is supplied
Channel 13 is answered to be sized, so that only allowing fuel to be restricted rate traffic organising chamber 12.Spring 20 is located at control chamber
In room 12, spring is used to apply bias force to needle 10, to promote 10 engaging base of needle.
It is controlled using two chambers (high voltage control chamber 12 and the low-pressure chamber 16 being connected to low pressure drain reservoir 22)
The movement of nozzle needle processed.When starting injection, the actuator 30 including bobbin assemblies 44 and control valve 15 is supplied energy and (beats
Open the stage), this promotes the armature to contact with each other 29 and valve member 25, and (armature 29 and valve member 25 are represented as control valve 15, position
In chamber 16) movement of spool spring 33 of confrontation actuator 30 moves up, so that valve member 25 is lifted away from its pedestal.Knot
Fruit, since chamber 16 is connect by 27 (not shown) of backward channel with low pressure reservoirs, fuel can be from control chamber 12
Spill into the chamber 16 in low pressure.As a result, control chamber 12 in fuel pressure decline, as a result, be applied to needle 10 to
The power that needle 10 pushes its pedestal to is also declined.Such point will be reached, exceeds the point, acts on the fuel of thrust surfaces 10a
Pressure, which is enough needle 10 being lifted away from its pedestal and fuel is allowed to flow through pedestal from hole 11, to be reached outlet opening and enters and spray
In the associated combustion space of emitter.
Embodiment：Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7
As shown in Fig. 2, valve member 25 engages its pedestal 46, then 11 He of hole when solenoid electric valve 15 is not energized
Controlling chamber 12 will include high-pressure fluid.High pressure movement and the movement of spring 20 in control chamber 12 are enough to ensure that needle 10 is protected
It holds its pedestal of engagement and injector 5 is closed in the case where no injection fluid.
As shown in Fig. 2, supply fuel from the aperture INO 52 to control chamber 12, the conduit in the aperture INO 52 is from common-rail
(not shown) supplies fuel by hemispherical member 50, and the aperture INO 52 is sized, so that only allowing fuel to be restricted rate
Traffic organising chamber 12.Spring 20 is located in control chamber 12, and spring 20 is used to apply bias force to needle 10, to promote valve
Needle 10 engages its pedestal.
As shown in figure 3, when to start injection, including (bobbin assemblies 44 include subgroup for control valve 15 and bobbin assemblies 44
Part 90) actuator 30 be energized, so that the movement for promoting armature 29 and valve member 25 to fight spring 33 moves up, by valve structure
Part 25 is lifted away from its pedestal.As a result, then fuel can pass through overflow pipe SPO 54 (Fig. 3) from control chamber by hemispherical member 51
Room 12 escapes into the chamber 16 (Fig. 3) under low pressure, and then fuel escapes into backward channel 27 (Fig. 3) from chamber 16.
In control chamber 12, there are 2 apertures；One is that filling fuels are being controlled the aperture INO 52 in chamber 12
(Fig. 2), one is so that the aperture SPO 54 (Fig. 3) that the fluid of chamber is drained.Then, it in order to quickly be emptied than filling, counts
Calculate ratio INO/SPO.
Now, first embodiment is described referring to Fig. 4.
It is therefore, axial blind by pressure that armature 29 is facilitated come compressive activation device spring 33 when actuator 30 is energized
Pressure in hole 43 increases.During the opening stage of control valve 15, the length of spring 33 reduces, so the volume of axial hole 43
Reduce, so that pressure increases.The armature 29 moved up pushes the fluid in axial hole 43 (axial hole 43 is blind hole), and flows
Bulk wave is moved back into downwards armature 29 and fluid wave interference control valve 15.Axial hole 43 and another is fluidly connected to by one end
End is fluidly connected to the discharge tube 42 of area of low pressure 41 to inhibit the over-voltage in axial hole 43, area of low pressure 41 and return loop
40 connections.Discharge tube 42 is located in the coil 96 being overmolded, and leads to from the axial hole (43) in the region as spring 33
External cylinder (108).
In addition, discharge tube 42 is in the portions of proximal of the upper part of axial hole 43.In addition, discharge tube 42 and injection
The main shaft of device 5 is round square or cylindrical at 90 degree of angle and the shape of discharge tube 42.In bobbin assemblies 44
It is overmolded during 96 by being processed, being drilled or being formed using plug-in unit discharge tube 42.In other embodiments,
(vertical) main shaft of discharge tube 42 and injector 5 at angle and discharge tube 42 for example between 80 degree and 120 degree shape
Shape is round square or conical.By being processed, being drilled or being used during overmolded the 96 of bobbin assemblies 44
Plug-in unit forms discharge orifice.
In another aspect of the present invention, manufacturing method is described at this time.As shown in Figure 6 and Figure 7, bobbin assemblies 44 include
Sub-component 90, sub-component 90 include coil 92, two terminals 94, the coil 96 and sheath 98 that are overmolded.Bobbin assemblies
44 are started with following steps：
Line 92 is wrapped on sub-component 90；Then
By the end of line 92 on the lower end of terminal 94；Then
Covering 95 is mounted on downwards on the lower end of terminal 94；Then
Covering 95 is welded on to the lower end of terminal 94；Then
By the assembly of sheath 98 on the region of line winding group (92)；Then
Overmolded and grinding is carried out to bobbin assemblies (44)；
By using plug-in unit or passing through being overmolding in bobbin assemblies in the overmolded stage of bobbin assemblies (44)
It is drilled after type to provide discharge tube (42).
Washer 100 and connector 102 are inserted into the terminal end side of bobbin assemblies (44).
Claims (11)
1. a kind of bobbin assemblies of electromagnetic actuators (44), the electromagnetic actuators are suitable for being located in fuel injector (5), described
Bobbin assemblies (44) include：
Core (93), the core extend along main shaft；
Coil (92), the coil arrange that the coil is overmolded around the core (93) so that the coil have from
First surface (104) axially extends to the cylindrical outer surface (108) of second surface；And
Axial blind hole (43), the axial blind hole is in the bobbin assemblies (44) axially inwardly from the first surface (104)
Distal end (106) is extended to, the axial blind hole (43) is suitable for accommodating the spring for biasing magnetic anchor；It is characterized in that：
The bobbin assemblies (44) are additionally provided with discharge tube (42), and the discharge tube (42) is prolonged from the axial blind hole (43)
It extends through over-molded members (96) and reaches the cylindrical outer surface (108).
2. bobbin assemblies (44) according to claim 1, wherein the discharge tube (42) is close to the distal end (106)
Arrangement.
3. bobbin assemblies (44) according to claim 1, wherein the discharge tube (42) is close to the bobbin assemblies
(44) the first surface (104) arrangement.
4. bobbin assemblies (44) according to claim 3, wherein the discharge tube (42) includes radial described first
At least one slot in surface (104).
5. bobbin assemblies (44) according to any one of the preceding claims, wherein the discharge tube (42) with it is described
Main shaft is at the angle between 80 degree to 120 degree.
6. bobbin assemblies (44) according to claim 5, wherein the angle is 90 °.
7. a kind of actuator (30) of fuel injector (5), the actuator include according to any one of preceding claims institute
The bobbin assemblies (44) stated.
8. a kind of fuel injector (5), the fuel injector includes actuator according to claim 7 (30).
9. a kind of method of processing and manufacturing bobbin assemblies (44) according to claim 1 to 6, this method include
Following steps：
Line is wrapped on sub-component (90)；Then
The coil of wire is wound on one end of terminal (94)；Then
Covering is mounted on wrap and welds the covering；Then
Sheath (98) is assemblied on the region of line winding group；Then
Overmolded and grinding is carried out to the bobbin assemblies (44)；Then
The setting discharge tube (42) in the over-molded members (96) of the bobbin assemblies (44).
10. according to the method described in claim 9, wherein, by drilled out in the over-molded members (96) discharge tube come
The discharge tube (42) are made.
11. according to the method described in claim 9, wherein, being made up of the overmolded period in the line using plug-in unit
The discharge tube (42).
Applications Claiming Priority (3)
| 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 |
| PCT/EP2014/075492 WO2015106866A1 (en) | 2014-01-15 | 2014-11-25 | Bobbin with venting conduit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106133305A CN106133305A (en) | 2016-11-16 |
| CN106133305B true CN106133305B (en) | 2018-11-20 |
Family
ID=50238982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480077185.4A Active CN106133305B (en) | 2014-01-15 | 2014-11-25 | Spool with discharge tube |
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) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201513309D0 (en) | 2015-07-29 | 2015-09-09 | Delphi Int Operations Lux Srl | Fuel injector |
| FR3055370B1 (en) * | 2016-09-01 | 2020-05-01 | Delphi Technologies Ip Limited | COIL ASSEMBLY |
Family Cites Families (10)
| 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 |
| DE102007011789A1 (en) * | 2007-03-12 | 2008-09-18 | Robert Bosch Gmbh | fuel injector |
| US20100096473A1 (en) * | 2008-10-20 | 2010-04-22 | Caterpillar Inc. | Variable flow rate valve for mechnically actuated fuel injector |
| EP2320066A1 (en) * | 2009-11-06 | 2011-05-11 | Delphi Technologies Holding S.à.r.l. | Electromagnetic actuator |
| HUE025828T2 (en) * | 2010-10-20 | 2016-05-30 | Delphi Int Operations Luxembourg Sarl | Improved fuel injector |
| DE102012110240A1 (en) * | 2012-10-26 | 2014-04-30 | L'orange Gmbh | Fuel injection injector for internal combustion engines |
-
2014
- 2014-01-15 GB GBGB1400650.6A patent/GB201400650D0/en not_active Ceased
- 2014-11-25 EP EP14806214.4A patent/EP3094853B1/en active Active
- 2014-11-25 WO PCT/EP2014/075492 patent/WO2015106866A1/en active Application Filing
- 2014-11-25 CN CN201480077185.4A patent/CN106133305B/en active Active
- 2014-11-25 KR KR1020167021886A patent/KR102204703B1/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| EP3094853A1 (en) | 2016-11-23 |
| CN106133305A (en) | 2016-11-16 |
| KR102204703B1 (en) | 2021-01-20 |
| WO2015106866A1 (en) | 2015-07-23 |
| EP3094853B1 (en) | 2020-09-02 |
| GB201400650D0 (en) | 2014-03-05 |
| KR20160107287A (en) | 2016-09-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200514 Address after: Babado J San Michael Patentee after: DELPHI TECHNOLOGIES IP Ltd. Address before: Luxemburg salad day Patentee before: DELPHI INTERNATIONAL OPERATIONS LUXEMBOURG S.A.R.L. |