CN107429651B - Control valve gear - Google Patents
Control valve gear Download PDFInfo
- Publication number
- CN107429651B CN107429651B CN201680017088.5A CN201680017088A CN107429651B CN 107429651 B CN107429651 B CN 107429651B CN 201680017088 A CN201680017088 A CN 201680017088A CN 107429651 B CN107429651 B CN 107429651B
- Authority
- CN
- China
- Prior art keywords
- valve body
- constraint
- outlet conduit
- section
- engaging portion
- 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.)
- Active
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
- 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
- F02M63/0026—Valves characterised by the valve actuating means electrical, e.g. using solenoid using piezoelectric or magnetostrictive actuators
-
- 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
- F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
- F02M63/0043—Two-way valves
-
- 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
- F02M2200/28—Details of throttles in fuel-injection apparatus
Abstract
A kind of valve body of the control valve of fuel injector, valve body are provided with suction line and outlet line, wherein in use, fuel flows into discharge container.Outlet line includes: primary outlet pipeline (50), is extended in valve body；And constraint outlet conduit (52), it engages primary outlet pipeline (50).Primary outlet pipeline (50) has non-circular specific section.The curvature that the section has is greater than the curvature of constraint outlet conduit (52).
Description
Technical field
The present invention relates generally to a kind of fuel injectors, more particularly relate to a kind of control valve gear.
Background technique
Within the fuel injector, control valve indirectly controlled by opening and closing outlet conduit the movement of valve member with
Fuel is set to leave control room with high pressure, the valve member is also seen as needle, the inside of the control room due to its elongated shape
Needle described in boost in pressure.
Control valve includes the cylindrical body extended between the first lateral face and the second lateral face.The ontology is further set
It is equipped with open hydraulic bore hole in a groove, the groove itself mainly opens wide in the first lateral face.Spool can be slided in bore hole
It is integrally arranged in magnetic armature and core assembly dynamicly.Although spool slides in bore hole, according to by controlled solenoid
The magnetic field of generation, plate-like armature shift in a groove.Spool and valve body further limit valve seat, the valve when component translation
Seat turns on or off.In order to make fuel flow to hydraulic bore hole from control room, outlet conduit is usually completely different by two
Straight part is formed.Long part extends to hydraulic bore hole from the second face.When valve body is arranged in injector, lateral face with it is another
The complimentary surface of injector valve body is sealed face contact, therefore then long straight part is open to the end on the second face at it
It is sealed.Outlet conduit is also being included in open short part, institute in the second face at the position being in fluid communication with control room
The short length part that is partially toward is stated to extend and lead to long part in T shape engaging portion.In operation, when valve seat is opened, fuel
Control room is left with high pressure, by flowing to T shape engaging portion in short part, fuel deviates and flows at T shape engaging portion
To the long part of exit passageway, until reaching hydraulic bore hole.Short part and long part typically have relatively similar diameter
Cylindricality.Extremely high-caliber mechanical stress is measured in the region of T shape engaging portion, the high-frequency of valve operation causes in institute
State the mechanical damage in T shape area of joinder.
Summary of the invention
Present invention aim to address or at least mitigate the valve body of the control valve mentioned above about fuel injector
The problem of, the valve body extends from the first lateral face along main shaft, and the first lateral face is suitable for being sealed with actuator
Face contact, the second lateral face are suitable for being sealed face contact with the upper surface of nozzle assembly.Nozzle assembly is provided with valve member, valve
Component can move between closed position and open position in control room under the influence of fuel pressure, valve body be provided with into
Mouth pipeline, wherein high pressure fuel in use is towards open flow, and opening is in control room in use to be in fluid communication, valve
Body is provided with outlet line, and fuel in use leaves control room and flows into discharge container or low pressure vessel in outlet line.
Outlet line includes: valve, has the spool being slidably disposed in hydraulic bore hole；Primary outlet pipeline,
Hydraulic bore hole is extended to from the second lateral face in valve body.Opening of the primary outlet pipeline in the second lateral face quilt in use
The upper surface of nozzle assembly is hermetically closed.Outlet line further includes constraint outlet conduit, is being used in the second lateral face
In with control room be in be in fluid communication position at open wide, constraint outlet conduit extend to T shape engaging portion, at T shape engaging portion
It constrains outlet conduit and engages primary outlet pipeline.
In the region of T shape engaging portion, primary outlet pipeline has specific noncircular cross section, and the curvature having is greater than constraint
The curvature of outlet conduit.
More accurately, in the region of T shape engaging portion, primary outlet pipeline have specific noncircular cross section, at least four times
In the curvature of constraint outlet conduit.
Moreover, in the region of T shape engaging portion, primary outlet pipeline has flat surface, opened wide in the flat surface it is described about
Beam outlet conduit.
In particular, primary outlet pipeline has long circular section in the region of T shape engaging portion, constraint outlet conduit has length
It is opened wide in the flat surface of circular section.
In another embodiment, in the region of T shape engaging portion, a part of primary outlet pipeline has widened radius bent
Rate opens wide the constraint outlet conduit in the widened radius curve.
As the example of another embodiment, primary outlet pipeline has elliptical shape section, constrains outlet conduit ellipse
It is opened wide in circular relatively large radius, so that axis along which line is vertical with elliptical main shaft when constraint outlet conduit extends
Ground intersects.
Moreover, primary outlet pipeline can have the constant cross-section along its all length no matter in which embodiment.
In contrast, it is possible to, the specific section of primary outlet pipeline is limited to a part of length, a part packet
Include T shape engaging portion.
Moreover, constraint outlet conduit can have circular cross-section.
The present invention further extends to the control valve group with the application valve body limited according to any one in aforementioned paragraphs.
The present invention is further extended to including actuator, nozzle assembly and the control valve group limited according to aforementioned paragraphs
Fuel injector.
Detailed description of the invention
The present invention is described by example referring now to the drawings, in which:
Fig. 1 is the partial axial section for being provided with the fuel injector of control valve gear according to a first embodiment of the present invention.
Fig. 2 is the axial cross section of the control valve of Fig. 1.
Fig. 3 is the translucent isometric views of the valve body of valve.
Fig. 4 be as Fig. 3 in terms of opposed direction when Fig. 3 amplification detail view.
Fig. 5, Fig. 6 and Fig. 7 are the detailed sketch of the different embodiments of the valve body of valve.
Specific embodiment
Fuel injector 10 is described with reference to Fig. 1, Fig. 1, is extended along main shaft X1 and including stack nozzle sets
Part 12, is control valve group 14 on stack nozzle assembly 12, followed by actuator.
Nozzle assembly 12 includes the elongate cylindrical nozzle valve body 16 of complementary arrangement, and upper guidance valve body 18 is located in elongate cylindrical
On nozzle valve body 16.The device 16,18 extends to nozzle valve body along axial X1 from the lateral upper surface 20 of upper guidance valve body 18
16 tip 22.The device 16,18 is additionally provided with internal axial bore 24, and needle 26 is slidably disposed at internal axial bore 24
In and be guided between upper guiding device 28 and lower guiding device 30.Upper guiding device 28 includes the top 32 of needle 26, top
End 32 is conditioned in the axially disposed guidance bore hole 34 in upper guidance valve body 18, and lower guiding device 30 includes the column of needle 26
Shape face 36, cylindroid 36 are conditioned in the lower part of bore hole 24 38.
Control valve group 14 includes cylindrical valve body 36, and cylindrical valve body 36 is between the first lateral face 38 and the second lateral face 40
Extend along axial direction X1, the first lateral face 38 is plotted in the top of attached drawing, the upper surface in the second lateral face 40 and upper guidance valve body 18
20 progress faces are in sealing contact.
The valve body 36 is additionally provided with the hydraulic bore hole 42 extended along second axis X2, and second axis X2 is parallel to main shaft
Line X1 and relative to main shaft X1 deviate.The offset introduced in EP0740068 shows many advantageous features.This injector
It is used as the purpose of this explanation, still, the present invention can also be beneficial to other injectors of two axis alignment.The hydraulic bore hole
42 open wide in the bottom surface of big groove 46 44, and big groove 46 itself opens wide in the first lateral face 38 of valve body.
Valve body 36 is further provided with outlet line 48, and outlet line 48 includes primary outlet pipeline 50 and constraint outlet
Road 52.Primary outlet pipeline 50 extends to hydraulic bore hole 42 from the second lateral face 40 of valve body, and constrains outlet conduit 52 also from valve
The lateral face 40 of the second of body extends, but is combined and be connected with each other into T shape engaging portion 54 with primary outlet pipeline 50.As
Visible in Fig. 2, primary outlet pipeline 50 is interconnected to form the angle A at substantially right angle with constraint outlet conduit 52, constrains out
The section S1 that mouth pipeline 52 has is less than the section S2 of primary outlet pipeline 50, and constraint outlet conduit forms fluid restriction.
When be arranged to nozzle assembly 12 be in face it is in sealing contact when, primary outlet pipeline 50 is by the lateral upper surface of upward guide piece
20 hermetically close, and constraint outlet conduit 52 opens wide on the control room 56 in the guidance bore hole 34 being arranged in above needle 26.
It constrains outlet conduit 52 to open wide in the hemispherical outlet recess portion in the top surface for being set to control room 56, therefore outlet line 48 exists
There is outlet with entrance in control room 56 and in hydraulic bore hole 42.
Armature and core assembly 58 are slidably disposed in hydraulic bore hole 42, and magnetic armature and core assembly 58 are held in the mouth including magnetic
Iron 62, magnetic armature 62 have thick disk shape, and spool 60 is inserted into and is crimped on the center of magnetic armature 62.Spool 60 can be in liquid
It is slided in pressure bore hole 24, armature 62 is mobile in the inside of recess portion 46.Opening on hydraulic bore hole 42 is in the bottom faces of recess portion 46
It is surrounded by valve seat 64, the displacement that valve seat 64 depends on armature and core assembly 58 is opened or closed.At open position,
Control room 56 is in fluid with discharge container or low pressure vessel and connects via outlet line 48, hydraulic bore hole 42 and groove 46
It is logical.
Under normal operating conditions, armature and core assembly 58 can be between closed position and open positions with several hundred conspicuous
Frequency hereby is round-trip, it means that flows through T shape engaging portion 54 with the fuel that 2000 bars or bigger pressure pressurize, is existed with identical frequency
The selection of mechanical stress is generated in the region.In order to minimize or even be eliminated because the stress is in the area of T shape engaging portion 54
The Latent destruction generated in domain, the section S2 of the primary outlet pipeline 50 of outlet line 48 are made for oval, constraint outlet conduit
52 oblong shape flattened side open wide.
As being found in Fig. 3 and amplify in Fig. 4, also drawn up in Fig. 5, the primary outlet pipeline 50 of pipeline 48 from
Its opening to point for being just located at 54 upstream of T shape engaging portion on the second lateral face 40 of valve body has oval section S2.
After this point, section S2 changes into circular cross-section, until being open to the other end in hydraulic bore hole 42.
In alternative embodiments, primary outlet pipeline 50 has all along it from the second lateral face 40 to hydraulic bore hole 42
The long circular section of length.
Important factor is at T shape engaging portion 54, to constrain outlet conduit 52 in primary outlet pipeline 50 in this design
The radius R2 of curvature, which is noticeably greater than in the region for constraining the radius R1 of outlet conduit 52, combines primary outlet pipeline 50.In the application
In, expression formula " noticeably greater than " should be interpreted that the section S2's of the primary outlet pipeline 50 measured in the region that two conduits merge
Radius R2 " being at least four times in " constrains the radius R1 of the section S1 of outlet conduit 52.This is mathematically given as
Limit selection is that constraint outlet conduit 52 opens wide in flat surface 66 (all oval sections as previously described), is pressed
According to definition, flat surface 66 has infinitely great radius of curvature R 2.Other possible selections are drawn up in Fig. 6 or Fig. 7, wherein
Primary outlet pipeline 50 has elliptic cross-section S2 in Fig. 6, constrains outlet conduit and opens wide in the region of maximum radius R2.Scheming
In 7, primary outlet pipeline 50 has semi-circular cross-section S2, constrains outlet conduit 52 and opens wide in flattened side.Section it is many its
He select be it is feasible, these are only merely presented as example.
List of reference signs
X1 main shaft
X2 valve axis
A angle
The section of the short part S1
The section of the part S2 long
The radius in the section of short part in R1 T shape engaging portion
The radius in the section of long part in R2 T shape engaging portion
10 injectors
12 nozzle assemblies
14 control valve groups
16 nozzle valve bodies
Valve body is guided on 18
The lateral upper surface guided on 20
The tip of 22 nozzles
24 bore holes
26 needles
The upper guiding device of 28 needles
The lower guiding device of 30 needles
The top of 32 needles
34 guidance bore holes
36 valve bodies
The lateral face of the first of 38 valve bodies
The lateral face of the second of 40 valve bodies
42 hydraulic bore holes
The bottom surface of 44 big recess portions
46 big recess portions
48 outlet lines
50 primary outlet pipelines
52 constraint outlet conduits
54 T shape engaging portions
56 control rooms
58 armature and core assembly
60 mandrels
62 magnetic armatures
64 valve seats
The flat surface in the section of 66 primary outlet pipelines
Claims (10)
1. a kind of valve body (36) of the control valve (14) of fuel injector (10), the valve body (36) from the first lateral face (38) and
Second lateral face (40) extends along main shaft (X1), and the described first lateral face (38) is suitable for being sealed face with actuator
Contact, the described second lateral face (40) are suitable for being sealed face contact, the nozzle assembly setting with the upper surface of nozzle assembly
Have valve member (26), the valve member (26) in control room (56) in fuel pressure under the influence of closed position and can beat
It is moved between open position, the valve body (36) is provided with
Suction line, high pressure fuel in use in the suction line towards open flow, the opening in use with
The control room (56), which is in, to be in fluid communication；And
Outlet line (48), in use, fuel leave the control room (56) in the outlet line and flow into discharge container
Or low pressure vessel, the outlet line (48) includes valve, and the valve includes spool (60), and the spool is with slidable side
Formula is arranged in hydraulic bore hole (42)；Primary outlet pipeline (50), the primary outlet pipeline are horizontal from described second in valve body (36)
The hydraulic bore hole (42) is extended to face (40), the primary outlet pipeline (50) is described in the described second lateral face (40)
Opening is hermetically closed by the upper surface of the nozzle assembly in use；The outlet line (48), which also has, to be constrained out
Mouthful pipeline (52), the constraint outlet conduit in the described second lateral face (40), in use with the control room (56)
It is opened wide at position in fluid communication, the constraint outlet conduit (52) extends to T shape engaging portion (54), in the T shape knot
The constraint outlet conduit (52) engages the primary outlet pipeline (50) at conjunction portion (54),
It is characterized in that,
In the region of T shape engaging portion (54), the primary outlet pipeline (50) has non-circular specific section (S2), institute
The radius (R1) that the radius (R2) that section (S2) has is greater than constraint outlet conduit (52) is stated,
Wherein, in the region of T shape engaging portion (54), a part of the primary outlet pipeline (50), which has, expands radius
(R2) curvature, constraint outlet conduit (52) are opened wide in the curvature for expanding radius (R2).
2. valve body (36) according to claim 1, wherein in the region of T shape engaging portion (54), the primary outlet
The radius (R2) that the section (S2) of pipeline (50) has at least is four times in the radius (R1) of constraint outlet conduit (52).
3. valve body (36) according to any one of the preceding claims, wherein in the region of T shape engaging portion (54)
In, the primary outlet pipeline (50) has flat surface (66), and the constraint outlet conduit (52) is opened wide in the flat surface.
4. valve body (36) according to claim 1 or 2, wherein in the region of T shape engaging portion (54), the master
Outlet conduit (50) has long round section, and the constraint outlet conduit (52) is in the flat surface with the long round section
(66) it is opened wide in.
5. valve body (36) according to claim 1 is wherein, in the region of T shape engaging portion (54), the primary outlet
Pipeline (50) has elliptical shape section, and the constraint outlet conduit (52) opens in the elliptical relatively large radius (R2)
It opens, so that axis along which is vertically intersected with the elliptical main shaft when constraint outlet conduit (52) extends.
6. valve body (36) according to claim 1 or 2, wherein the primary outlet pipeline (50) has along its all length
There is constant cross-section.
7. valve body (36) according to claim 1 or 2, wherein the specific section of the primary outlet pipeline (50)
(S2) it is restricted to a part of length, described a part includes T shape engaging portion (54).
8. valve body (36) according to claim 1 or 2, wherein the constraint outlet conduit (52) has circular cross-section.
9. a kind of control valve group (14), the control valve group has valve body according to any one of the preceding claims
(36)。
10. a kind of fuel injector (10), the fuel injector includes actuator, nozzle assembly and according to claim 9
The control valve group.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1505094.1 | 2015-03-26 | ||
| GBGB1505094.1A GB201505094D0 (en) | 2015-03-26 | 2015-03-26 | Control valve arrangement |
| PCT/EP2016/052301 WO2016150603A1 (en) | 2015-03-26 | 2016-02-03 | Control valve arrangement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107429651A CN107429651A (en) | 2017-12-01 |
| CN107429651B true CN107429651B (en) | 2019-08-30 |
Family
ID=53052422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680017088.5A Active CN107429651B (en) | 2015-03-26 | 2016-02-03 | Control valve gear |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3274582B1 (en) |
| CN (1) | CN107429651B (en) |
| GB (1) | GB201505094D0 (en) |
| WO (1) | WO2016150603A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019109825A1 (en) * | 2017-12-07 | 2019-06-13 | 天津盛欧美发动机技术有限公司 | Common-rail fuel injector for diesel engine |
| CN114464842B (en) * | 2022-02-09 | 2023-01-31 | 擎能动力科技(苏州)有限公司 | Front-end structure and system of fluid circulation system of fuel cell system and new energy automobile |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102216600A (en) * | 2008-09-16 | 2011-10-12 | 雷诺股份公司 | Fluid injection device |
| CN102822496A (en) * | 2010-03-24 | 2012-12-12 | 罗伯特·博世有限公司 | Common-rail injector having a pressure-balanced control valve and additional reservoir volume |
| EP2778386A1 (en) * | 2013-03-13 | 2014-09-17 | Delphi International Operations Luxembourg S.à r.l. | Control valve assembly and fuel injector incorporating a control valve assembly |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1657435B8 (en) * | 2004-11-12 | 2007-05-09 | C.R.F. Società Consortile per Azioni | A fuel injector for an internal-combustion engine |
-
2015
- 2015-03-26 GB GBGB1505094.1A patent/GB201505094D0/en not_active Ceased
-
2016
- 2016-02-03 EP EP16702576.6A patent/EP3274582B1/en active Active
- 2016-02-03 CN CN201680017088.5A patent/CN107429651B/en active Active
- 2016-02-03 WO PCT/EP2016/052301 patent/WO2016150603A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102216600A (en) * | 2008-09-16 | 2011-10-12 | 雷诺股份公司 | Fluid injection device |
| CN102822496A (en) * | 2010-03-24 | 2012-12-12 | 罗伯特·博世有限公司 | Common-rail injector having a pressure-balanced control valve and additional reservoir volume |
| EP2778386A1 (en) * | 2013-03-13 | 2014-09-17 | Delphi International Operations Luxembourg S.à r.l. | Control valve assembly and fuel injector incorporating a control valve assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3274582B1 (en) | 2019-06-05 |
| EP3274582A1 (en) | 2018-01-31 |
| WO2016150603A1 (en) | 2016-09-29 |
| CN107429651A (en) | 2017-12-01 |
| GB201505094D0 (en) | 2015-05-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200511 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. |
|
| TR01 | Transfer of patent right |