CN101994618A - Intake manifold advanced in uniform distributing of PCV gas - Google Patents
Intake manifold advanced in uniform distributing of PCV gas Download PDFInfo
- Publication number
- CN101994618A CN101994618A CN2009101780599A CN200910178059A CN101994618A CN 101994618 A CN101994618 A CN 101994618A CN 2009101780599 A CN2009101780599 A CN 2009101780599A CN 200910178059 A CN200910178059 A CN 200910178059A CN 101994618 A CN101994618 A CN 101994618A
- Authority
- CN
- China
- Prior art keywords
- gas
- pcv
- collection chamber
- air supply
- supply opening
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
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
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/104—Intake manifolds
-
- 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
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
- F02M35/10222—Exhaust gas recirculation [EGR]; Positive crankcase ventilation [PCV]; Additional air admission, lubricant or fuel vapour admission
-
- 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
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/1034—Manufacturing and assembling intake systems
-
- 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
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/06—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding lubricant vapours
Abstract
The present invention provides an intake manifold advanced in uniform distribution of PCV gas. The intake manifold includes a main body, a throttle valve, a gas collection chamber, intake passages and a PCV gas supply port. The throttle valve is connected to the main body in a prescribed position to supply fuel-air mixture to the main body. The gas collection chamber is arranged in the main body to temporarily store the fuel-air mixture supplied by the throttle valve to the gas collection chamber. The gas collection chamber allows the PCV gas to be pumped to the gas collection chamber again by a combustion chamber of an engine. The intake passages are arranged around the main body in a streamline shape, such that the fuel-air mixture is uniformly supplied to the combustion chamber from the gas collection chamber. The PCV gas supply port is arranged in the gas collection chamber to guide the PCV gas, such that the PCV gas is uniformly supplied to the intake passages. The PCV gas supply port is provided with a hollow gas supply port body; an inlet, formed by opening a first end of the hollow gas supply port body so as to pump the PCV gas to the gas supply port body through the inlet; and a guiding board arranged on a second end of the gas supply port body. A guiding projection is projected to the gas supply port body from the guiding board.
Description
Technical field
Present invention relates in general to a kind of intake manifold of improving performance that has for uniform distribution PCV (positive crankcase ventilation (PCV)) gas, especially in regard to a kind of like this intake manifold, in this intake manifold, the PCV air supply opening is installed in the collection chamber, so that will supply in the intake manifold equably, thereby improve the function that PCV gas is assigned to equably gas-entered passageway (intakerunner) from the PCV gas that valve mechanism cover is drawn in the collection chamber.
Background technique
Usually, the effect of intake manifold is to be supplied to firing chamber in order to the motor that produces power equably be drawn into fuel air mixture this intake manifold from vaporizer (evaporator).Preferably, intake manifold is configured such that the resistance that is subjected to when fuel air mixture reduces when vaporizer flows into the firing chamber, and makes this resistance low as much as possible.This intake manifold has collection chamber, throttle valve body and a plurality of gas-entered passageway.Collection chamber is formed on the bottom of the main body of intake manifold, and the interim fuel air mixture that supplies in this intake manifold that stores.Throttle valve body is attached to an end of main body and is connected with collection chamber, thereby fuel air mixture is supplied to the collection chamber via throttle valve body from vaporizer.These gas-entered passageways guide to fuel air mixture in the firing chamber from collection chamber.
Produced, supply to the gas blowby of the fuel air mixture in each firing chamber via corresponding gas-entered passageway, be sucked in the crankcase via the gap between piston and the cylinder surfaces.If gas blowby directly discharged, then can cause atmospheric pollution and reduce the efficient of motor.Therefore, people have worked out a kind of like this design method of intake manifold, its make gas blowby to be reused in case in the firing chamber with its perfect combustion.
Usually, gas blowby is collected in the valve mechanism cover of crankcase.Collected gas blowby is supplied to PCV connecting-tube nozzle (nipple) from valve mechanism cover, and this PCV connecting-tube nozzle is arranged on the collection chamber and by a plurality of independently PCV pipes and is connected to valve mechanism cover.Usually, the PCV connecting-tube nozzle is located at the middle part of collection chamber.Herein, the gas blowby of being supplied with (being PCV gas) must be drawn into recently fuel air mixture in the collection chamber smooth and easy, mix equably.
Simultaneously, the PCV gas in being sucked into collection chamber mixes equably with fuel air mixture and when being supplied to gas-entered passageway equably, the combustion efficiency that obtains by deflagration in these cylinders can be kept equably.Yet, in conventional art and since recently via throttle valve body be drawn into fuel air mixture in the collection chamber in collection chamber with high relatively flow rate, therefore be difficult to realize above-mentioned purpose.
Summary of the invention
Therefore, consider that the problems referred to above that produce in the prior art have proposed the present invention, and the object of the present invention is to provide a kind of intake manifold that is used for distributing equably PCV gas, wherein, the PCV air supply opening is arranged on the internal surface of the collection chamber that is connected with the PCV connecting-tube nozzle, thereby the gas blowby that is drawn in the collection chamber via the PCV connecting-tube nozzle can be supplied in the gas-entered passageway equably.
For achieving the above object, the invention provides a kind of intake manifold, comprising: main body; Throttle valve body is attached to main body in the pre-position, and this throttle valve body is connected with main body, so that fuel air mixture is supplied in this main body from vaporizer; Collection chamber is formed in this main body, so that interim the storage by throttle valve body supplies to fuel air mixture in this collection chamber, this collection chamber allows the firing chamber of PCV gas from motor is drawn in this collection chamber once more; A plurality of gas-entered passageways are provided with around this main body, and described gas-entered passageway is streamlined, so that make fuel air mixture supply to this firing chamber equably from this collection chamber; And the PCV air supply opening, be installed in this collection chamber, this PCV air supply opening guiding PCV gas, so that PCV gas is supplied in the gas-entered passageway equably, wherein, the PCV air supply opening has: the air supply opening body of hollow (port body); Inlet forms by first end that makes this air supply opening body is unlimited, so that PCV gas is drawn in this air supply opening body via this inlet; And guide plate, be located at second end of this air supply opening body, and have from this guide plate and protrude out guide protrusion this air supply opening body.
This PCV air supply opening also can have the outlet that is formed between this air supply opening body and this guide plate, so that PCV gas is discharged in this collection chamber by described outlet from this air supply opening body.
The outlet of this PCV air supply opening can comprise the outlet on a plurality of relative both sides that are arranged on this guide protrusion.
Described outlet can comprise: first outlet that forms in the position in the face of this throttle valve body; And second outlet that forms in the position relative with this first outlet based on this guide protrusion.Compare with this first outlet, this guide protrusion is set to more near this second outlet, so that make the flow of the PCV gas of discharging by this first outlet greater than the flow of the PCV gas of discharging by this second outlet.
In the intake manifold of uniform distribution PCV gas according to the present invention, the gas blowby that is drawn into collection chamber by the PCV connecting-tube nozzle can be supplied in the gas-entered passageway equably once more, and then is assigned to equably in the cylinder of motor.
This structure that PCV gas can be uniformly distributed in the cylinder can be avoided the cylinder problem of unstable that causes owing to the gas aggradation thing (gas sediment) that gathers around gas-entered passageway or firing chamber.
In addition, the present invention can make the unburned gas that is present in the motor carry out recirculation effectively, thereby improves the control to waste gas.
Description of drawings
From detailed description below in conjunction with accompanying drawing, can more clearly understand above-mentioned and other purposes, feature and advantage of the present invention, in the accompanying drawings:
Fig. 1 illustrates the stereogram that is installed in according to the PCV air supply opening in the intake manifold of the embodiment of the invention;
Fig. 2 is the stereogram of the PCV air supply opening of Fig. 1; And
Fig. 3 is the A-A line side cross sectional view along Fig. 2.
Embodiment
Hereinafter with reference to the description of drawings intake manifold that is used for the PCV gas of uniform distribution in it according to one preferred embodiment of the present invention.
Fig. 1 illustrates the stereogram that is installed in the PCV air supply opening 50 in the intake manifold according to an embodiment of the invention.Fig. 2 is the stereogram of PCV air supply opening 50.Fig. 3 is the A-A line side cross sectional view along Fig. 2.
Now describe in detail according to a preferred embodiment of the invention with reference to the accompanying drawings.
The structure of intake manifold 1 now is described with reference to Fig. 1 and Fig. 3.Intake manifold 1 comprises main body 10, throttle valve body 20, collection chamber 30, a plurality of gas-entered passageway 40 and PCV air supply opening 50.Throttle valve body 20 is attached to an end of main body 10, so that be connected with the inner space of main body 10.The fuel air mixture that throttle valve body 20 will form in vaporizer 3 supplies in the main body 10.Collection chamber 30 is formed in the main body 10, and as the interim apotheca that stores the fuel air mixture of supplying with via throttle valve body 20.In addition, collection chamber 30 allows to aspirate once more PCV gas from firing chamber 5.Gas-entered passageway 40 is streamline-shaped and centers on the periphery setting of main body 10, thereby fuel air mixture can be supplied in the firing chamber 5 via gas-entered passageway 40 equably from collection chamber 30.PCV air supply opening 50 is installed in the collection chamber 30, and guiding PCV gas is so that supply to PCV gas equably in the gas-entered passageway 40.
Main body 10, throttle valve body 20 and gas-entered passageway 40 can be formed integrally as monomer spare by casting; Perhaps alternately, they can be by a plurality of independent operation manufacturings, and then assembling mutually.Preferably make intake manifold 1 be formed integrally as monomer spare, this is because intake manifold 1 is the parts of the part of covering engine, so must have enough intensity.
The spatial configuration of collection chamber 30 is for making the fuel air mixture that is drawn in the collection chamber 30 from vaporizer 3 recently to mix equably with the PCV gas of collecting and being drawn in the collection chamber 30 by valve mechanism cover.Therefore, collection chamber 30 makes the mixture of fuel air mixture and PCV gas to be fed in the gas-entered passageway 40 with stable status.In addition, on main body 10, be provided with the PCV connecting-tube nozzle (not shown) that is connected with collection chamber 30.The PCV connecting-tube nozzle is used to guide PCV gas so that PCV gas is drawn in the collection chamber 30 from valve mechanism cover.
These gas-entered passageways 40 are around the shape of a plurality of supplying pipes of the outer surface of main body 10.These gas-entered passageways 40 are spaced apart from each other at interval with rule.First end 42 of gas-entered passageway 40 is connected with collection chamber 30, and 44 at its second end is connected with the corresponding firing chamber 5 of motor.Be provided with the packing ring (not shown) between second end 44 of each gas-entered passageway 40 and the corresponding firing chamber 5.Preferably, each gas-entered passageway 40 all is streamlined, so that fuel air mixture can flow through gas-entered passageway swimmingly and flow in the firing chamber 5.
Hereinafter, with reference to the PCV air supply opening 50 of Fig. 2 and Fig. 3 explanation as primary component of the present invention.PCV air supply opening 50 is container shapes, and is used for PCV gas is supplied to collection chamber 30.PCV air supply opening 50 comprises the air supply opening body 51 of the outward appearance that forms this PCV air supply opening 50.By the unlimited inlet 56 that forms of first end that makes air supply opening body 51, so that PCV gas is drawn into the PCV air supply opening 50 via inlet 56 from the PCV connecting-tube nozzle.PCV air supply opening 50 also comprises the guide plate 52 on second end of being located at air supply opening body 51.Guide protrusion 53 protrudes out the air supply opening body 51 from guide plate 52.Preferably, inlet 56 and guide plate 52 are formed in the air supply opening body 51 in opposed facing position.
In addition, between air supply opening body 51 and guide plate 52, form outlet 54,55, so that make PCV gas discharge from PCV air supply opening 50 by these outlets 54,55.Outlet 54,55 comprises the outlet of first on the relative both sides that are arranged on guide protrusion 53 54 and second outlet 55.Therefore, the PCV gas stream of the air supply opening body 51 of flowing through is directed projection 53 and is divided into two strands, and these two strands of PCV gases flow to first outlet, 54 and second outlet 55 respectively.Distance between first outlet 54 and the throttle valve body 20 is less than the distance between second outlet 55 and the throttle valve body 20.In this embodiment, although understand that forming two in air supply opening body 51 exports 54,55, but the number of outlet can increase according to the structure of collection chamber 30.
In brief, owing to fuel air mixture is sucked in the collection chamber 30 by throttle valve body 20 with high flow rate, therefore, can remaining a large amount of fuel air mixture apart near throttle valve body 20 gas-entered passageway farthest.Therefore, the PCV gas of relatively small amount is discharged via comparing with first outlet 54 apart from the throttle valve body 20 second farther outlets 55.Above-mentioned purpose can realize by such structure: guide protrusion 53 is arranged on the position of closing on second outlet 55.
Hereinafter, describe according to the PCV gas stream in the intake manifold of the present invention with reference to Fig. 1 to Fig. 3.
At first, the fuel air mixture that forms from fuel tank (not shown) and vaporizer 3 is sucked in the collection chamber 3 by throttle valve body 20, supplies in the firing chamber 5 by gas-entered passageway 40 subsequently.After this, the PCV gas that is leaked to the crankcase from firing chamber 5 under non-combustion regime is drawn in the collection chamber 3 once more by the PCV connecting-tube nozzle (not shown) that is connected with collection chamber 30.Here, because the PCV connecting-tube nozzle is connected directly to the inlet 56 of PCV air supply opening 50, therefore the PCV gas stream that aspirates once more by the PCV connecting-tube nozzle is through air supply opening body 51, and the outlet 54,55 by PCV air supply opening 50 subsequently is discharged in the collection chamber 30.Subsequently, the PCV gas that is drawn into once more in the collection chamber 3 mixes equably with fuel air mixture in supplying to collection chamber 30 recently.After this, the mixture of PCV gas and fuel air mixture is fed in the gas-entered passageway 40.In said process, PCV air supply opening 50 utilizes guide protrusion 53 that the PCV gas stream is divided into two strands, and these two strands of PCV gases are supplied in the collection chamber 30 along both direction, thereby makes fuel air mixture to be supplied to gas-entered passageway 40 equably.
As mentioned above, in the present invention, the gas blowby that spills from the firing chamber 5 of motor is drawn in the collection chamber 30 once more by the PCV air supply opening 50 that is connected with collection chamber 3, is supplied to gas-entered passageway equably once more then.Therefore, different with conventional art is that PCV gas can be assigned in the firing chamber equably.In addition, because PCV gas can be supplied in the gas-entered passageway equably, so the present invention can avoid in conventional art the unbalanced problem of cylinder that causes owing to gas aggradation thing that PCV gas is supplied in the gas-entered passageway to be produced unevenly.
Although disclose the preferred embodiments of the present invention for exemplary purposes, the present invention is not limited to described embodiment.In addition, those of ordinary skill in the art will recognize, under the situation that does not break away from the disclosed scope and spirit of the present invention of appended claims, can carry out various modifications, interpolation and replacement.These are revised, add and replace and must be regarded as dropping in the scope of claims.
Claims (4)
1. intake manifold comprises:
Main body;
Throttle valve body connects with described main body in the pre-position, and described throttle valve body is connected with described main body, so that fuel air mixture is supplied in the described main body from vaporizer;
Collection chamber is formed in the described main body in order to interim storage and supplies to fuel air mixture in the described collection chamber by described throttle valve body, and described collection chamber allows the firing chamber of PCV gas from motor is drawn in the described collection chamber once more;
A plurality of gas-entered passageways that are provided with around described main body, described gas-entered passageway is streamlined, makes described fuel air mixture be supplied to described firing chamber equably from described collection chamber; And
Be installed in the PCV air supply opening in the described collection chamber, described PCV air supply opening guiding PCV gas makes PCV gas be supplied to equably in the described gas-entered passageway,
Wherein, described PCV air supply opening comprises: the air supply opening body of hollow; Inlet forms by first end that makes described air supply opening body is unlimited, makes PCV gas be sucked in the described air supply opening body via described inlet; And guide plate, be arranged at second end of described air supply opening body, and have from described guide plate and protrude out guide protrusion the described air supply opening body.
2. intake manifold as claimed in claim 1, wherein, described PCV air supply opening also has the outlet that forms between described air supply opening body and described guide plate, so that make PCV gas be discharged in the described collection chamber by described outlet from described air supply opening body.
3. intake manifold as claimed in claim 2, wherein, the outlet of described PCV air supply opening comprises the outlet on a plurality of relative both sides that are arranged on described guide protrusion.
4. intake manifold as claimed in claim 3, wherein, described outlet comprises: first outlet that forms in the position in the face of described throttle valve body; And second outlet that forms in the position relative with described first outlet based on described guide protrusion; Wherein, described guide protrusion is set to than more close described second outlet of first outlet, makes to export the flow of the flow of the PCV gas of discharging greater than the PCV gas of discharging by described second outlet by described first.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2009-0078954 | 2009-08-25 | ||
| KR1020090078954A KR101115815B1 (en) | 2009-08-25 | 2009-08-25 | Intake Manifold Advanced In Uniform Distributing of Blowby Gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101994618A true CN101994618A (en) | 2011-03-30 |
| CN101994618B CN101994618B (en) | 2013-03-20 |
Family
ID=43785240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101780599A Expired - Fee Related CN101994618B (en) | 2009-08-25 | 2009-09-28 | Intake manifold advanced in uniform distribution of PCV gas |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR101115815B1 (en) |
| CN (1) | CN101994618B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104727898A (en) * | 2013-12-18 | 2015-06-24 | 曼胡默尔滤清器（上海）有限公司 | High circulating gas combustion efficiency type intake manifold |
| CN110821727A (en) * | 2018-08-08 | 2020-02-21 | 本田技研工业株式会社 | Intake manifold of engine |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11898522B1 (en) | 2023-03-24 | 2024-02-13 | Honda Motor Co., Ltd. | Intake manifold for internal combustion engine, positive crankcase ventilation system including same, and internal combustion engine |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1182197A (en) | 1997-09-08 | 1999-03-26 | Denso Corp | Intake device for internal combustion engine |
| KR100527441B1 (en) * | 2002-06-12 | 2005-11-09 | 현대자동차주식회사 | Apparatus for distributing blow-by gas for engine |
| JP4200706B2 (en) | 2002-08-06 | 2008-12-24 | トヨタ自動車株式会社 | Blowby gas recirculation system |
| JP4853481B2 (en) | 2008-02-29 | 2012-01-11 | 株式会社デンソー | Intake device for internal combustion engine |
-
2009
- 2009-08-25 KR KR1020090078954A patent/KR101115815B1/en active IP Right Grant
- 2009-09-28 CN CN2009101780599A patent/CN101994618B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104727898A (en) * | 2013-12-18 | 2015-06-24 | 曼胡默尔滤清器（上海）有限公司 | High circulating gas combustion efficiency type intake manifold |
| CN110821727A (en) * | 2018-08-08 | 2020-02-21 | 本田技研工业株式会社 | Intake manifold of engine |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101115815B1 (en) | 2012-03-09 |
| CN101994618B (en) | 2013-03-20 |
| KR20110021264A (en) | 2011-03-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100545441C (en) | Resin intake manifold | |
| US10184368B2 (en) | Breather device for internal combustion engine | |
| CN203655472U (en) | Gas-inlet apparatus for internal combustion engine | |
| CN107429636B (en) | Has W/EGR gas fuel mixer | |
| CN101994617A (en) | Intake manifold advanced in uniform distribution of PCV gas | |
| CN203230508U (en) | Air inlet system for internal combustion engine | |
| JP2010150927A (en) | Exhaust gas recirculating device for internal combustion engine | |
| CN103867289A (en) | Variable intake manifold for internal combustion engine and variable air intake device using the same | |
| CN101994618B (en) | Intake manifold advanced in uniform distribution of PCV gas | |
| CN201568110U (en) | Novel valve chamber housing labyrinth structure | |
| CN105179111A (en) | Gas/dual-fuel engine intake manifold gas injection device | |
| CN104033209B (en) | From engine pack and the method thereof of engine blow-by gas separation machine oil | |
| CN104727898A (en) | High circulating gas combustion efficiency type intake manifold | |
| CN209855939U (en) | Engine intake manifold assembly with EGR (exhaust gas Recirculation) intake | |
| CN210660360U (en) | Intake manifold with bent pipe structure | |
| CN102425475A (en) | Forced ventilation system of engine crankcase | |
| CN207761819U (en) | Crankcase with oil-gas separation mechanism | |
| KR101846837B1 (en) | intake manifold | |
| CN106285832B (en) | One kind being used for the piston-engined crankcase pressure self-balancing system of Heavy End Aviation Fuel | |
| KR102467498B1 (en) | Engine having a cylinder head into which an oil separator is built | |
| CN111636986B (en) | Aeroengine and air intake system thereof | |
| CN212563497U (en) | Air intake manifold assembly and automobile | |
| CN220487690U (en) | Engine crankcase ventilation system, engine and vehicle | |
| KR20180087757A (en) | Fluid flow control apparatus for internal-combustion engine and check valve including the same | |
| KR20010050193A (en) | Intake device for multi-cylinder engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| 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: 20130320 |