CN102628415B - Fuel injection component - Google Patents
Fuel injection component Download PDFInfo
- Publication number
- CN102628415B CN102628415B CN201210021391.6A CN201210021391A CN102628415B CN 102628415 B CN102628415 B CN 102628415B CN 201210021391 A CN201210021391 A CN 201210021391A CN 102628415 B CN102628415 B CN 102628415B
- Authority
- CN
- China
- Prior art keywords
- component
- radial clearance
- fuel injection
- pilot hole
- pressure
- 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.)
- Expired - Fee Related
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 50
- 238000002347 injection Methods 0.000 title claims abstract description 25
- 239000007924 injection Substances 0.000 title claims abstract description 25
- 230000004323 axial length Effects 0.000 claims abstract description 8
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 5
- 239000004615 ingredient Substances 0.000 claims description 5
- 230000005489 elastic deformation Effects 0.000 claims description 4
- 230000008021 deposition Effects 0.000 claims description 3
- 230000004913 activation Effects 0.000 claims description 2
- 239000012190 activator Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims 1
- 238000002485 combustion reaction Methods 0.000 description 4
- 239000003225 biodiesel Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- -1 wherein Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/0603—Injectors peculiar thereto with means directly operating the valve needle using piezoelectric or magnetostrictive operating means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
-
- 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
- F02M61/167—Means for compensating clearance or thermal expansion
-
- 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
- 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
- F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
- F02M63/0071—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059 characterised by guiding or centering means in valves including the absence of any guiding means, e.g. "flying arrangements"
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Manufacturing & Machinery (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The present invention relates to a kind of fuel injection component (100), there is the component (10) being movably disposed along longitudinal axis (17), in the pilot hole (16) that described component (10) is arranged in ways (12) under conditions of forming radial clearance (13), wherein, the different pressures of pressure medium are existed on two facing sides of described pilot hole (16), described pressure medium especially fuel, and wherein, described radial clearance (13) is flow through by described pressure medium on the direction towards less pressure.Described radial clearance (13) between described component (10) and described ways (12) different size ground on the axial length of described pilot hole (16) is constituted.
Description
Technical field
The present invention relates to a kind of fuel injection component.
Background technology
From such fuel injection component known to DE 10 2,007 025 964 A1 of the applicant.In the document
In, described fuel injection component is formed as the hydraulic valve for fuel injector, and described fuel injector has sliding in valve casing
The guide blot guiding dynamicly, the front surface fuel applying power under high pressure of described guide blot.Described it is in
Fuel under high pressure causes the described valve casing radially around valve bearing pin to axially expand, thus forming the radial clearance of taper, this
Sample can increase the leakage loss on hydraulic valve.In aforementioned documents, for avoiding the increase of leakage loss, it is proposed that a kind of use
In the taper configurations of the conduit of valve bearing pin and the relative configurations of valve casing.Now substantially, described radial clearance ignores hydraulic pressure
Pressure load and the axial length with regard to described guide blot is constant.
In addition to the problem that leakage loss is reflected, in fuel injection component, alternative fuel is used by increase, especially
Biodiesel, between the component being movably disposed along longitudinal axis and the pilot hole of the ways receiving described component
Guiding clearance in improve the formability of deposit, described biodiesel uses in self-activation internal combustion engine.From DE 10
2007 025 964 A1 are known, constant on axial length radial clearance under the pressure loading of hydraulic pressure, unsatisfactory
Ground solves the problems, such as described deposit reflection.
Content of the invention
From shown prior art, it is an object of the invention to improve prior art fuel injection component so that
Ignore increase and use alternative fuel, reduce the tendency of deposition in the guiding area of moving link.
According to the present invention it is proposed that a kind of fuel injection component, there is the component being movably disposed along longitudinal axis, described
In the pilot hole that component is arranged in ways under conditions of forming radial clearance, wherein, in two phases of described pilot hole
Faced by side on exist pressure medium different pressures it is characterised in that pressure medium have on the front surface of component bigger
Pressure, and described radial clearance is on the direction towards less pressure, i.e. to the output that component is opposite with front surface
The direction in region is flow through by described pressure medium, and the described radial clearance between described component and described ways is described
On the axial length of pilot hole, different size ground is constituted, thus avoiding deposition in pilot hole for the pressure medium, wherein, described footpath
Reduce in described pilot hole on the direction of the lower pressure towards described component to gap.
This task solves using according to the fuel injection component of the present invention, wherein, described component and ways it
Between radial clearance formed to different size on the axial length of described pilot hole.In feature disclosed by the invention at least two
Individual all combinations both fall within the framework of the present invention.
The structural architecture of radial clearance is particularly preferred, and in described construction, described radial clearance is in less pressure
Reduce in described pilot hole on force direction.This this have the advantage that, described clearance pressure is in the side in the gap becoming relatively narrower
Ramp up, so that described deposit is eliminated or be come off using the pressure medium flowing through radial clearance becomes easy.
Due to due to manufacturing technology, particularly advantageously propose here, described radial clearance pass through described pilot hole or
Component is formed.This pyramidal structure allows suitably to realize by conventional instrument comparative costs.
However, it is particularly preferred to such configuration, wherein, the taper structure by described moving link for the described radial clearance
Make and formed in the case that ways cylindrically constructs.
In order to avoid when manipulating described moving link, described deposit thickens, in addition particularly preferably being provided that, institute
State component to arrange with being connected with operating element effect, this operating element makes described component more in described pilot hole in activation
Move on big pressure direction.
Radial clearance be set to suitably sized under the boundary condition of manufacturing technology economy, described radial clearance it
There is in narrow most position maximum 1 μm, width position has maximum 10 μm, or or described lead in the length of described component
To in the length in hole, cone angle is the largest of about 1.5 °.
Have confirmed and there produce described deposit with development trend, there there is relatively high component or fuel temperature
Degree, or there form guiding clearance the narrowest.Because this arbitrary boundary conditions occurs especially in fuel injector, especially
It is provided that, described fuel injection component is the part of fuel injector.
The first structure application of the present invention is proposed that, described component and ways are arrangements in area of low pressure
Vulcan coupling ingredient, the effect of described coupling device and piezoelectric actuator arranges with being connected.
It is alternatively possible to consider that described component is the armature pin of electromagnetic valve, and described ways is armature director element.
Bear in high pressure, refer herein to component under 1600 bars and above fuel pressure bullet under the pressure loading of fuel
Property deformation.Therefore it is preferably set up here, the size of described radial clearance is considering described component because of hydraulic pressure
Design under elastic deformation.
Following explanation according to preferred embodiment and other advantages, feature and the details that obtain the present invention referring to the drawings.
Brief description
Fig. 1 shows according to prior art movably cloth in ways in the way of the side view of partly cutting
The component put；
When Fig. 2 is shown in the radial clearance using taper configurations, arrangement according to the invention is arranged in ways
Component；And
Fig. 3 display is explained according to the arrangement being connected with deposit present in radial clearance in Fig. 1 with Fig. 2, radially
The curve chart of pressure curve in gap.
Specific embodiment
Show the arrangement according to prior art in FIG.Especially from arrangement this known to fuel injection system, described combustion
Material spraying system is for example in the region of fuel injector.Described arrangement includes component 1, and component 1 has pin shaped, especially structure
Cause cylinder region 2, described region 2 in the cylindrical pilot hole 3 of ways 4 on the direction of four-headed arrow 5
Can arrange up and down on its longitudinal axis.Component 1 is for example electric with not shown operating element with method in known manner
Magnetic ground or be connected similarly, realize component 1 to move on the direction of four-headed arrow 5.Pilot hole 3 has interior diameter D, and structure
Part 1 has overall diameter d.Between the pilot hole 3 of component 1 and ways 4, radial clearance 6 constructs the inside in pilot hole 3,
For the sake of more preferable differentiability, pilot hole 3 shows in FIG greatly enlargedly.Here substantially, according to region 2 or
Constant diameter d, D of pilot hole 3, radial clearance 6 is always etc. big in the inside of pilot hole 3 in the guiding length of component 1.
On the front surface 7 that fuel is especially present in component 1 under high pressure (being higher than for example the pressure of 1600 bars).With this phase
Than, relatively low pressure existed on the end 8 in the face of the component 1 of front surface 7, the back pressure of such as fuel storage container, thus, high
The fuel of pressure flows through pilot hole 3 from the direction of front surface 7 towards the direction of the end 8 of component 1.Particularly using replacement combustion
During material, referred to herein as example but be not limited to biodiesel, it reaches the area of the radial clearance 6 for deposit 9a, 9b, 9c
In domain.Here, deposit 9a, 9b and 9c represents the exemplary position in radial clearance 6, and deposit 9a, 9b and 9c can deposit
On them.Therefore, a deposit 9a is present in the region of the front surface 7 in radial clearance 6, and deposit 9b exists
In the region of the end 8 in radial clearance 6.Total axial length that deposit 9c facing away from component 1 is arranged in radial clearance 6
In.Self-evidently, so-called deposit 9a, 9b and 9c are arranged in the total cross-section of radial clearance 6 here, wherein,
For the sake of simplicity, show all deposit 9a, 9b, 9c in FIG simultaneously.
Arrangement according to the invention in ways 12 for the display member 10 in fig. 2.Here, the arrangement of Fig. 2 is not
It is same as being according in place of the arrangement of Fig. 1, compared with radial clearance 6, radial clearance 13 constructs tapered with respect to axial length
's.Especially it is provided that, radial clearance 13 has the component than self- steering hole 16 in the region of the front surface 14 of component 10
Bigger surface or larger cross section in 10 output area 15, thereon ratio exist on the opposite side of component 10 pressure be situated between
The bigger pressure of matter (fuel).
Preferably propose, radial clearance 13 constructs and is maximum 1 μm wide (in output area 15) in its narrow most position,
It is maximum 10 μm wide (in the region of front surface 14) on its width position.With regard to the cone angle of radial clearance 13, it with respect to
The length of component 10 in the region of pilot hole 16 or be about 1.5 ° with respect to the length of component 10.
The taper configurations of radial clearance 13 are preferably so constituted, and that is, the pilot hole 16 in ways 12 is configured to cylinder
, and component 10 obtains its cone-shaped form by grinding.Self-evidently, also there is component 10 structure under the framework of the present invention
Cause cylinder, and pilot hole 16 is taper.
Component 10 connects ground arrangement with the ways and means that no longer illustrate and operating element 18, the such as effect such as armature.?
Manipulate operating element 18, such as when magnetic coil flows, component 10 hence along its longitudinal axis 17, that is, along four-headed arrow
19, preferably on the direction of the radial clearance 13 becoming much larger move, therefore, deposit 9a, 9b, 9c in radial clearance 13 because
The motion of component 10 does not thicken.Usually, returning equipment can for example be set to the form of compression spring etc., and it is in operating element
During 18 deactivation, component 10 moves in its initial position again.This can be construed in other words, when operating element 18 activates, behaviour
Vertical element 18 makes component 10 move on the direction towards higher pressure.
Present invention proposition, component 10 and ways 12 are the ingredients of fuel injection component 100.Especially, exist
Here it is envisaged that fuel injection component 100 is fuel injector, fuel under high pressure flows through it.For example, here, component 10 is electromagnetism
The armature pin of valve, and ways 12 is armature director element.But it is also envisioned that component 10 and ways 12 are in combustion
In the area of low pressure of material ejector arrangement Vulcan coupling ingredient, wherein, component 10 then with as operating element 18
Piezo-activator arrange with for example acting on connection.
In run duration, in the relatively high pressure that particularly there is fuel within the fuel injector, herein refer to 1600 bars
And above pressure, it leads to component 10 or ways 12 elastic deformation.It is preferably provided with here, between determining radially
During the size of gap 13 or manufacture component 10 and note or consider during ways 12 component 10 or ways 12 this
Plant elastic deformation.
In the length of component 1,10, clearance pressure p is shown in the inside of radial clearance 6,13 in figure 3.Here should
Understand, under clearance pressure p, exist in radial clearance 6,13, and then adjust the pressure of the fuel of pressure differential.Here, long
Degree l (0) represents length in input area 15 for the component 1,10, and length l (1) represents component 1,10 on front surface 7,14
Length.Profit is represented by dashed line the deposit of the prior art when using radial clearance 6 equal always according to Fig. 1 here
The pressure curve of 9a, 9b and 9c.By comparison, represent tapered when constructing according to the radial clearance 13 of the present invention using continuous lines
When, deposit 9a, 9b and 9c in the pressure curve of radial clearance 13, wherein, in other respects, component 1,10 and ways 4,
12 have same size.It is recognized that respectively in deposit 9a, 9b and the 9c according to prior art with according to the present invention's
When directly comparing between deposit 9a, 9b and 9c, in the present invention with radial clearance 13, compared with radial clearance 6, in footpath
There is higher pressure to the inside of gap 13 always.By respective higher pressure, now, deposit in radial clearance 13
Tendency reduces, or in cleaning or when flowing through radial clearance 6,13, make deposit 9a, 9b, 9c from component 10 or ways
12 member upper surface disengaging is easier.
Above-mentioned structure or fuel injection component 100 can be altered or modified with method in many ways, without departing from
The design of the present invention.
Claims (10)
1. a kind of fuel injection component (100), has the component (10) being movably disposed along longitudinal axis (17), described component
(10), in the pilot hole (16) being arranged in ways (12) under conditions of forming radial clearance (13), wherein, lead described
There are the different pressures of pressure medium it is characterised in that pressure medium is in component on two facing sides of hole (16)
(10) bigger pressure is had on front surface, and described radial clearance (13) on the direction towards less pressure, i.e. to
The direction of the output area opposite with front surface (15) of component (10) is flow through by described pressure medium, in described component (10)
Described radial clearance (13) and described ways (12) between different size on the axial length of described pilot hole (16)
Ground is constituted, thus avoiding deposition in pilot hole (16) for the pressure medium, wherein, described radial clearance (13) is towards described structure
Reduce in described pilot hole (16) on the direction of lower pressure of part (10).
2. fuel injection component according to claim 1 it is characterised in that
Described radial clearance (13) is formed by described pilot hole (16) or component (10) taper configurations.
3. fuel injection component according to claim 1 it is characterised in that
Described radial clearance (13) is by the taper configurations of described component (10) when described pilot hole (16) cylindrically constructs
Described ways (12) is constituted.
4. the fuel injection component according to any one in claims 1 to 3 it is characterised in that
Described component (10) is arranged with operating element (18) effect with being connected, and this operating element makes described component (10) in activation
Described pilot hole (16) moves on the direction towards bigger pressure.
5. the fuel injection component according to any one in claims 1 to 3 it is characterised in that
Described radial clearance (13) is maximum 1 μm in its narrow most position and is maximum 10 μm on width position, or
In described component (10) or described pilot hole (16) length, cone angle (α) is maximum 1.5 °.
6. according to any one in claims 1 to 3 fuel injection component it is characterised in that
It is the ingredient of fuel injector.
7. fuel injection component according to claim 6 it is characterised in that
Described component (10) and ways (12) are the ingredients of the Vulcan coupling of arrangement in area of low pressure, described liquid
Pressure coupling device is arranged with piezo-activator effect with being connected.
8. fuel injection component according to claim 6 it is characterised in that
Described component (10) is the armature pin of electromagnetic valve, and described ways (12) is armature director element.
9. fuel injection component according to claim 6 it is characterised in that
The size of described radial clearance (13) is considering described component (10) or ways (12) because being under hydraulic high-pressure
Fuel and in the case of elastic deformation constitute.
10. fuel injection component according to claim 1 it is characterised in that
Described pressure medium is fuel.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011003452.8 | 2011-02-01 | ||
| DE102011003452A DE102011003452A1 (en) | 2011-02-01 | 2011-02-01 | Fuel injection component |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102628415A CN102628415A (en) | 2012-08-08 |
| CN102628415B true CN102628415B (en) | 2017-03-01 |
Family
ID=45581723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210021391.6A Expired - Fee Related CN102628415B (en) | 2011-02-01 | 2012-01-31 | Fuel injection component |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2481910B2 (en) |
| CN (1) | CN102628415B (en) |
| DE (1) | DE102011003452A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201402535D0 (en) * | 2014-02-13 | 2014-04-02 | Delphi Int Operations Luxembourg Sarl | Fuel pump |
| SE545024C2 (en) * | 2019-10-01 | 2023-02-28 | Scania Cv Ab | Fuel injector arrangement for an internal combustion engine and method for operating said arrangement |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1653076A1 (en) * | 2004-10-29 | 2006-05-03 | Denso Corporation | Flow damper for common rail fuel injection apparatus |
| CN1853042A (en) * | 2003-09-19 | 2006-10-25 | 博世株式会社 | Fuel injection valve for internal combustion engine |
| CN1906399A (en) * | 2004-01-16 | 2007-01-31 | 罗伯特·博世有限公司 | Fuel injector comprising a directly triggered injection valve member |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59130070U (en) * | 1983-02-18 | 1984-08-31 | ダイハツ工業株式会社 | internal combustion engine fuel injection valve |
| JPH07103106A (en) * | 1993-09-30 | 1995-04-18 | Hino Motors Ltd | Fuel injection device |
| DE10045281C1 (en) † | 2000-09-13 | 2002-05-23 | Orange Gmbh | High pressure fuel pump has reduced diameter of piston head corresponding with spacing of heat input from compression cavity |
| DE102004012950A1 (en) † | 2004-03-17 | 2005-10-13 | Man B & W Diesel Ag | High-pressure pump piston-cylinder unit |
| DE102007025964A1 (en) | 2007-06-04 | 2008-12-11 | Robert Bosch Gmbh | Hydraulic valve for a fuel injector |
-
2011
- 2011-02-01 DE DE102011003452A patent/DE102011003452A1/en not_active Withdrawn
- 2011-12-30 EP EP11196257.7A patent/EP2481910B2/en not_active Not-in-force
-
2012
- 2012-01-31 CN CN201210021391.6A patent/CN102628415B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1853042A (en) * | 2003-09-19 | 2006-10-25 | 博世株式会社 | Fuel injection valve for internal combustion engine |
| CN1906399A (en) * | 2004-01-16 | 2007-01-31 | 罗伯特·博世有限公司 | Fuel injector comprising a directly triggered injection valve member |
| EP1653076A1 (en) * | 2004-10-29 | 2006-05-03 | Denso Corporation | Flow damper for common rail fuel injection apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2481910B1 (en) | 2013-08-28 |
| CN102628415A (en) | 2012-08-08 |
| EP2481910A1 (en) | 2012-08-01 |
| DE102011003452A1 (en) | 2012-08-02 |
| EP2481910B2 (en) | 2020-11-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170301 |