CN208252238U - A kind of gasoline locomotive exhaust gas recirculation processing system - Google Patents
A kind of gasoline locomotive exhaust gas recirculation processing system Download PDFInfo
- Publication number
- CN208252238U CN208252238U CN201820604764.5U CN201820604764U CN208252238U CN 208252238 U CN208252238 U CN 208252238U CN 201820604764 U CN201820604764 U CN 201820604764U CN 208252238 U CN208252238 U CN 208252238U
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- Prior art keywords
- pipe
- air inlet
- valve
- gas
- shaped pipe
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- 230000003137 locomotive effect Effects 0.000 title claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 230000005540 biological transmission Effects 0.000 claims description 29
- 238000007789 sealing Methods 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 239000000872 buffer Substances 0.000 claims description 3
- 230000003139 buffering effect Effects 0.000 claims description 3
- 238000002156 mixing Methods 0.000 abstract description 4
- 238000004064 recycling Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 63
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000000295 fuel oil Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000011229 interlayer Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 206010067171 Regurgitation Diseases 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000003434 inspiratory effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 230000003319 supportive effect Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Exhaust-Gas Circulating Devices (AREA)
Abstract
The utility model discloses a kind of gasoline locomotive exhaust gas recirculation processing systems, including air inlet pipeline and gas exhaust piping；Air filter, electronic throttle, compressor, cooler, throttle body and inlet manifold are provided on air inlet pipeline；It is provided with exhaust manifold and triple valve on gas exhaust piping, cooler and EGR valve are installed on circulation pipe, the end of circulation pipe is provided with back-shaped pipe, and air inlet pipeline is radially provided with connecting tube, and back-shaped pipe passes through being connected and fixed for two ring flanges；It is provided with stomata and back flow plate in back-shaped pipe, the entrance of the end of back-shaped pipe towards air inlet pipeline.Exhaust gas in gas exhaust piping can be entered circulation pipe by triple valve by the processing system of the utility model, the end of circulation pipe is provided with back-shaped pipe with stomata and back flow plate, the gas mixing in the exhaust gas and air inlet pipe of circulation can be allowed uniform, and enter throttle body after the pressurization of compressor and the cooling of cooler, inlet manifold is entered by the adjusting of throttle body, to realize the recycling processing of exhaust gas.
Description
Technical field
The utility model relates to automobile exhaust gas recirculating technique fields, and in particular to arrive a kind of gasoline locomotive exhaust gas recirculation
Processing system.
Background technique
The gas generated after combustion in IC engine is largely discharged after treatment, has small part of gas that will pass through
Circulating line, which is re-introduced into engine, carries out second-time burning, advantageously reduces pollution in this way, this mode be exhaust gas again
Circulating technology.
Oxygen content is extremely low in the gas that internal combustion engine is discharged after combustion does not have even, after this discharge gas is mixed with air-breathing
Oxygen concentration in air-breathing can be made to reduce, therefore following phenomenon can be generated:
Oxygen content more lower than atmosphere (highest) temperature in burning can reduce, and can inhibit the generation of nitrogen oxides (NOx).
When ignition temperature reduces, the thermal energy diverging of cylinder and combustion chamber wall surface, piston face can be reduced, in addition because damaging caused by thermal dissociation
Mistake also has and reduces slightly.Its sub-load of fuel oil engine be cylinder in non-EGR in order to provide equivalent amount of oxygen (in order to
Obtain the power output of same axis), it is therefore desirable to throttle is opened greatly, lower, fuel consumption is lost in as a result oil suction when air-breathing (throttle)
Rate can improve.When this is the oxygen reduction that piston sucks under one stroke, it can add as used small air displacement engine to adopt down
Speed effect the same when advancing.The regurgitation volume of EGR is according to being up to 15% under the situation (in inspiratory capacity) of fuel oil engine, and idling
When with can then stop when high load.With the lesser large-sized diesel vehicle of engine output power from the point of view of vehicle weight, engine load is higher, is
Can reach capacity standard also often will use EGR technology.
Utility model content
The purpose of the utility model is to provide a kind of gasoline locomotive exhaust gas recirculation processing systems, can be by the exhaust gas of discharge
Carry out recycling processing.
In order to achieve the above object, providing a kind of gasoline locomotive exhaust gas recirculation processing in one embodiment of the utility model
System, including air inlet pipeline and gas exhaust piping；
Air filter, electronic throttle, compressor, cooler, throttle body and air inlet discrimination are provided on air inlet pipeline
Pipe；The general pipeline of inlet manifold is connect with throttle body, and branch pipe is connect with each cylinder body of engine；
Exhaust manifold and triple valve are provided on gas exhaust piping, two outlets of triple valve are connected separately with offgas duct and follow
Endless tube is provided with ternary catalyzing unit in offgas duct；Cooler and EGR valve, the end setting of circulation pipe are installed on circulation pipe
There is back-shaped pipe, the end of back-shaped pipe is accessed inside air inlet pipeline；Check valve, gas flow sensor and temperature are installed on circulation pipe
Spend sensor；
Air inlet pipeline is radially provided with connecting tube, and first flange disk is provided in connecting tube, and the end of circulation pipe is set
It is equipped with second flange disk, back-shaped pipe passes through being connected and fixed for two ring flanges；Back-shaped pipe is L-shaped, and stomata is provided in back-shaped pipe
And back flow plate, the entrance of the end of back-shaped pipe towards air inlet pipeline；
Cooler includes cooler casing, and the both ends of cooler casing are provided with third ring flange, third ring flange it is interior
Side is provided with buffering pipeline section, buffers and is provided with undulatory condenser pipe on the inside of pipeline section, is provided on cooler casing and cooling
The condensing water inlet pipe and condensating water outlet tube that device enclosure interior communicates；
EGR valve includes valve body, has the air inlet and air outlet of connection on valve body, and the inside of valve body holds with motor
Receive chamber and gear accommodating chamber；
Motor is embedded in motor accommodating chamber, driving wheel is connected on output shaft；
Transmission shaft runs through valve inner, and the one end in the channel across air inlet and air outlet, transmission shaft is connected with
With the driven wheel of driving wheel cooperation, the other end and the bearing fit for being mounted on valve inner；Driven wheel and driving wheel are mounted on tooth
It takes turns in accommodating chamber；
Valve, with the race fit for being fixed on air inlet and air outlet channel interior；Valve it is radial parallel be fixed on biography
On moving axis；The end face periphery of valve is equipped with annular groove, is equipped with sealing ring in annular groove；
End cap, sealed electric-motor accommodating chamber and gear accommodating chamber.
Preferably, the stomata in back-shaped pipe is in circular cone shape, and radius of the stomata close to back-shaped inside pipe wall side is less than close
The radius of outer wall side.
Preferably, cooler is internally provided with temperature sensor.
Preferably, carburetor is provided on air inlet pipeline.
Preferably, check valve is provided on gas exhaust piping.
Preferably, it is provided with gasket groove on the first flange disk in connecting tube, is provided with sealing ring in gasket groove.
In conclusion the utility model has the advantage that
Exhaust gas in gas exhaust piping can be entered circulation pipe, circulation pipe by triple valve by the processing system of the utility model
End be provided with back-shaped pipe with stomata and back flow plate, the gas mixing in the exhaust gas and air inlet pipe of circulation can be allowed uniform,
And enter throttle body after the pressurization of compressor and the cooling of cooler, air inlet discrimination is entered by the adjusting of throttle body
Pipe, to realize the recycling processing of exhaust gas.
Detailed description of the invention
Fig. 1 is the schematic diagram of the utility model one embodiment；
Fig. 2 is the installation diagram of back-shaped pipe and air inlet pipe in the utility model one embodiment；
Fig. 3 is the schematic diagram of cooler in the utility model one embodiment；
Fig. 4 is the stereoscopic schematic diagram in a direction of the utility model EGR valve；
Fig. 5 is the top view of the utility model EGR valve；
Fig. 6 is the cross-sectional view of the utility model EGR valve；
Fig. 7 is the valve of EGR valve and the perspective view of transmission axis connection cooperation.
Wherein, 1, air inlet pipeline；2, gas exhaust piping；3, air filter；4, electronic throttle；5, carburetor；6, it calms the anger
Machine；7, cooler；8, throttle body；9, inlet manifold；10, exhaust manifold；11, triple valve；12, ternary catalyzing unit；13, cooling
Device；14, EGR valve；15, back-shaped pipe；16 connecting tubes；17, first flange disk；18, second flange disk；19, back flow plate；20,
Three ring flanges；21, pipeline section is buffered；22, condenser pipe；23, circulation pipe；41, valve body；42, air inlet；43, gas outlet；44, electronic
Machine accommodating chamber；45, gear accommodating chamber；46, transmission shaft；47, driven wheel；48, bearing；49, valve；410, seat ring；411, annular
Slot；412, end cap；413, torsionspring；414, sealing cover；415, interconnecting piece；416, intake-outlet.
Specific embodiment
The utility model provides a kind of gasoline locomotive exhaust gas recirculation processing system, including air inlet pipeline 1 and exhaust pipe
Road 2；Air inlet pipeline is the pipeline that air and atomized fuel are sent into engine, and gas exhaust piping is the pipe for the tail gas discharge that will be generated
Road.
Be provided on air inlet pipeline air filter 3, electronic throttle 4, compressor 6, cooler 7, throttle body 8 and into
Gas manifold 9；The general pipeline of inlet manifold is connect with throttle body, and branch pipe is connect with each cylinder body of engine.At air filter purification
Air is managed, carburetor 5 can additionally be added after air filter, then add electronic throttle valve regulation flow, fuel oil
The mixture of air and waste gas temperature after the increase of compressor improves, it is therefore desirable to temperature, temperature are reduced by cooler
Mixed gas is sent by inlet manifold using throttle body after reduction, the outlet of throttle body and the general pipeline of inlet manifold is allowed to connect
It connects, mixed gas is sent into each cylinder by the branch pipe of inlet manifold burns.This completes the parts of engine discharge exhaust gas
The circular treatment of gas.
Exhaust manifold 10 and triple valve 11 are provided on gas exhaust piping, exhaust manifold is connect with engine, on exhaust manifold
Check valve can be set for avoiding backflowing.The entrance of triple valve and exhaust management connection, i.e., connect with the pipeline section after exhaust manifold
It connects, two outlets of triple valve are connected separately with offgas duct and circulation pipe, are provided with ternary catalyzing unit in offgas duct.Offgas duct is
For the pipeline that most of tail gas is discharged, ternary catalyzing unit 12 can carry out purified treatment to exhaust gas.Circulation pipe is by part tail
Gas is recycled into the pipeline of air inlet pipe.
Cooler 13 and EGR valve 14 are installed, the exhaust gas temperature entered in circulation pipe is higher, therefore logical on circulation pipe
Subcooler is cooled down, and the amount of entrance and the opportunity of entrance are adjusted by EGR valve.Before cooler is mounted on EGR valve
The middle section of circulation pipe is arranged in end, EGR valve.
The end of circulation pipe 23 is provided with back-shaped pipe 15, and the front end of back-shaped pipe is connect with circulation pipe, and the end of back-shaped pipe connects
Enter and exhaust gas is sent in air inlet pipeline inside air inlet pipeline.Check valve, gas flow sensor and temperature are installed on circulation pipe
Sensor is spent, can play the role of avoiding backflowing, monitor gas flow and temperature.
In order to be convenient for the installation of back-shaped pipe, it is radially provided with connecting tube 16 in air inlet pipeline, is set in connecting tube
It is equipped with first flange disk 17, the end of circulation pipe is provided with second flange disk 18, and the head end of back-shaped pipe is arranged in second flange disk
Inside, back-shaped pipe is connected and fixed by two ring flanges, the gas of circulation pipe by back-shaped pipe inner passage enter into
In air pipe.Back-shaped pipe is L-shaped, and stomata and back flow plate, end the entering towards air inlet pipeline of back-shaped pipe are provided in back-shaped pipe
Mouthful, the direction of back-shaped pipe can allow exhaust gas after being discharged in stomata with the gas flow in air inlet pipeline on the contrary, i.e. air inlet pipeline
Middle gas moves forward, and exhaust gas is that backwards, can make the mixing of two kinds of gas more in this way after coming out in stomata in stomata
Add uniformly.Back flow plate 19 also can allow the fluid near stomata to be blocked simultaneously, allow mixed gas part to turn back, further strengthen
The irregular flowing of gas, and then improve uniformly mixed degree.
Cooler includes cooler casing, and the both ends of cooler casing are provided with third ring flange 20, passes through third flange
Disk and piping connection.Be provided on the inside of third ring flange buffering pipeline section 21, buffer be provided on the inside of pipeline section it is undulatory cold
Pipe 22 is coagulated, is provided with the condensing water inlet pipe and condensating water outlet tube communicated with inside cooler casing on cooler casing.Into
Fluid in air pipe or gas exhaust piping is passed in and out from condenser pipe, and condensed water is cooled down along condensation pipe outer wall.
In the optimal enforcement example of the utility model, the stomata in back-shaped pipe is in circular cone shape, and stomata is close to back-shaped inside pipe wall
The radius of side is less than the radius close to outer wall side.Gas discharge pressure from stomata can be allowed to reduce in this way, be conducive to gas
Body molecule is towards different directions, so that mixing is more uniform.
In the optimal enforcement example of the utility model, cooler is internally provided with temperature sensor, can detecte condensed water
Temperature is provided with gasket groove on the first flange disk in connecting tube, is provided with sealing ring in gasket groove, can be improved sealing effect
Fruit.
EGR valve the utility model of the utility model provides a kind of electric control EGR valve, including valve body 41, valve body 41
Upper air inlet 42 and gas outlet 43 with connection, the inside of valve body 41 have motor accommodating chamber 44 and gear accommodating chamber 45.
Motor is embedded in motor accommodating chamber 44, and driving wheel is connected on output shaft.
Transmission shaft 46, inside valve body 41, the channel across air inlet 42 and gas outlet 43, transmission shaft 46
One end is connected with the driven wheel 47 with driving wheel cooperation, and the other end cooperates with the bearing 48 being mounted on inside valve body 41；Driven wheel
47 and driving wheel be mounted in gear accommodating chamber 45；
Valve 49 cooperates with the seat ring 410 for being fixed on 43 channel interior of air inlet 42 and gas outlet；Valve 49 is radial parallel
Be fixed on transmission shaft 46；The end face periphery of valve 49 is equipped with annular groove 411, is equipped with sealing ring in annular groove 411；End cap
412, sealed electric-motor accommodating chamber 44 and gear accommodating chamber 45.
Valve body 41 is for assembling motor, transmission shaft 46 and other components, the supportive body as electric control EGR valve.
The air inlet 42 of valve body 41 is connected with matched pipeline and introduces exhaust gas into, by flowing into exhaust gas appropriate after the adjusting of valve 49
Second-time burning is carried out in engine.
The utility model is that transmission shaft 46 is driven by motor, and band movable valve 49 rotates when transmission shaft 46 rotates, so that
Gap is generated between valve 49 and seat ring 410, different gaps forms different exhaust gas flows.In the actual process, air inlet
42 and the section in channel of gas outlet 43 can be circle, seat ring 410 be mounted on the channel interior, or circular ring shape, valve
Part, that is, sealing cover 414 that door 49 cooperates with seat ring 410 is also circular ring shape.When controlling beginning, make valve 49 and seat ring 410
Radial parallel, so that sealing between the two, electric control valve 49 is in the state closed.
To be installed through transmission shaft 46 inside valve body 41, need to open up inside valve body 41 for accommodating transmission
The space of axis 46.Valve 49 is fixed on transmission shaft 46, and one end of transmission shaft 46 is equipped with driven wheel 47, and driven wheel 47 is in driving wheel
Drive under rotate, therefore the other end of transmission shaft 46 is also required to rotate.In order to solve the above technical problems, in transmission shaft 46
The other end bearing 48 is installed, bearing 48 is fixed in valve body 41, and bearing 8 is socketed in 46 periphery of transmission shaft.
For valve 49 in rotation, maximum rotation angle is 90 degree, and exhaust gas flow is maximum at this time.When transmission shaft 46 is worn
Cross inside valve body 41, when channel between air inlet 42 and gas outlet 43, in order to prevent transmission shaft 46 and vias inner walls it
Between gap generate leakage, the leakage refer to exhaust gas without valve 49 can enter gas outlet 43, hence into engine
Portion；The link position of transmission shaft 46 and valve 49 can be arranged in the channel at 42 place of air inlet.Specifically, valve can be made
Door 49 includes the sealing covers 414 and interconnecting piece 415 of integration connection, and sealing cover 414 is equipped with annular groove 411, in annular groove 411
The sealing ring of installation has the function of control valve minimum discharge, carbon distribution can also be cleared up automatically, be prevented due to carbon distribution
Reason causes valve 49 and the stuck phenomenon of transmission shaft 46.Interconnecting piece 415 is fixedly connected with transmission shaft 46, and interconnecting piece 415 is close
Air inlet 42, sealing cover 414 is close to gas outlet 43.The radial parallel of the utility model refers to that valve 49 is connect with transmission shaft 46
When, the axial direction of transmission shaft 46 is parallel with the radial direction of the one of diameter of valve 49.Cooperation in the utility model
Refer to, two components link together in a manner of as commonly understood in the art；That is the cooperation of valve 49 and seat ring 410 refers to valve
49, in 410 inner rotation of seat ring, may be implemented the connection transmission of 410 two sides of seat ring and be turned on or off.Air inlet 42 and gas outlet
43 are respectively connected in circulation branch road.The air inlet and air outlet of EGR valve can also be by way of welding or being interference fitted
The circulation and closing for realizing gas are attached with other pipelines.
In one embodiment of the utility model, intermediate gear is equipped between driving wheel and driven wheel 47, intermediate gear can
To adjust the speed ratio between driving wheel and driven wheel 47, and driven wheel 47 can be sector gear.
In one embodiment of the utility model, transmission shaft 46 is equipped with torsionspring close to one end periphery of driven wheel 47
413；Torsionspring 413 can be used for after motor stops, and valve 49 automatically resets.
In one embodiment of the utility model, valve body 41 has interlayer, is equipped with circulating water passage and Inlet and outlet water in interlayer
Mouth 416.After being passed through recirculated water in interlayer, 44 outer wall of motor accommodating chamber, valve body 41 can be cooled down.
Although being described in detail in conjunction with attached drawing to specific embodiment of the present utility model, should not be construed as pair
The restriction of the protection scope of this patent.In range described by claims, those skilled in the art are without creative labor
The dynamic various modifications that can be made and deformation still belong to the protection scope of this patent.
Claims (1)
1. a kind of gasoline locomotive exhaust gas recirculation processing system, it is characterised in that: including air inlet pipeline and gas exhaust piping；
Air filter, electronic throttle, compressor, cooler, throttle body and air inlet discrimination are provided on the air inlet pipeline
Pipe；The general pipeline of inlet manifold is connect with throttle body, and branch pipe is connect with each cylinder body of engine；
Exhaust manifold and triple valve are provided on the gas exhaust piping, two outlets of triple valve are connected separately with offgas duct and follow
Endless tube is provided with ternary catalyzing unit in offgas duct；Cooler and EGR valve, the end of circulation pipe are installed on the circulation pipe
It is provided with back-shaped pipe, the end of back-shaped pipe is accessed inside air inlet pipeline；Check valve is installed, gas flow passes on the circulation pipe
Sensor and temperature sensor；
The air inlet pipeline is radially provided with connecting tube, and first flange disk, the end of the circulation pipe are provided in connecting tube
End is provided with second flange disk, and back-shaped pipe passes through being connected and fixed for two ring flanges；The back-shaped pipe is L-shaped, sets in back-shaped pipe
It is equipped with stomata and back flow plate, the entrance of the end of back-shaped pipe towards air inlet pipeline；
The cooler includes cooler casing, and the both ends of cooler casing are provided with third ring flange, third ring flange it is interior
Side is provided with buffering pipeline section, buffers and is provided with undulatory condenser pipe on the inside of pipeline section, is provided on cooler casing and cooling
The condensing water inlet pipe and condensating water outlet tube that device enclosure interior communicates；
The EGR valve includes valve body, has the air inlet and air outlet of connection on valve body, and the inside of valve body holds with motor
Receive chamber and gear accommodating chamber；
Motor is embedded in motor accommodating chamber, driving wheel is connected on output shaft；
Transmission shaft, runs through valve inner, the channel across air inlet and air outlet, and one end of transmission shaft is connected with and master
The driven wheel of driving wheel cooperation, the other end and the bearing fit for being mounted on valve inner；Driven wheel and driving wheel are mounted on gear appearance
It receives intracavitary；
Valve, with the race fit for being fixed on air inlet and air outlet channel interior；Valve it is radial parallel be fixed on transmission shaft
On；The end face periphery of valve is equipped with annular groove, is equipped with sealing ring in annular groove；
End cap, sealed electric-motor accommodating chamber and gear accommodating chamber；Stomata in the back-shaped pipe is in circular cone shape, and stomata is close to return
The radius of shape inside pipe wall side is less than the radius close to outer wall side；
It is provided with gasket groove on first flange disk in the connecting tube, is provided with sealing ring in gasket groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820604764.5U CN208252238U (en) | 2018-04-26 | 2018-04-26 | A kind of gasoline locomotive exhaust gas recirculation processing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820604764.5U CN208252238U (en) | 2018-04-26 | 2018-04-26 | A kind of gasoline locomotive exhaust gas recirculation processing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208252238U true CN208252238U (en) | 2018-12-18 |
Family
ID=64637407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820604764.5U Expired - Fee Related CN208252238U (en) | 2018-04-26 | 2018-04-26 | A kind of gasoline locomotive exhaust gas recirculation processing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208252238U (en) |
-
2018
- 2018-04-26 CN CN201820604764.5U patent/CN208252238U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181218 |
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| CF01 | Termination of patent right due to non-payment of annual fee |