CN202330134U - Diesel engine exhaust particulate grain distribution dilution system for vehicle - Google Patents
Diesel engine exhaust particulate grain distribution dilution system for vehicle Download PDFInfo
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- CN202330134U CN202330134U CN2011204817526U CN201120481752U CN202330134U CN 202330134 U CN202330134 U CN 202330134U CN 2011204817526 U CN2011204817526 U CN 2011204817526U CN 201120481752 U CN201120481752 U CN 201120481752U CN 202330134 U CN202330134 U CN 202330134U
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- venturi tube
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Abstract
The utility model discloses a diesel engine exhaust particulate grain distribution dilution system for a vehicle, which comprises a waste gas distribution tube (2), a primary high-pressure vacuum fan (4), a venturi tube (6), a sampling probe (11) and a secondary high-pressure vacuum fan (12), wherein a primary air filter (3), the primary high-pressure vacuum fan (4), a primary air flow control valve (5), the venturi tube (6) and a primary dilution air duct (7) are hermetically connected in sequence; the waste gas distribution tube (2) extends into an engine exhaust tube (1) in threaded hermetical connection, and the lower end of the waste gas distribution tube (2) and the venturi tube (6) are in spirally hermetical connection; the secondary air filter (8), the secondary air flow control valve (9), the secondary dilution air duct (10) and the second high-pressure vacuum fan (12) are in spirally hermetical connection in sequence; and a secondary dilution air duct (10) is hermetically connected with the lower end of a primary dilution air duct (7), and provided with a sampling probe (11).
Description
Technical field
The utility model relates to a kind of device that is applied to technical field of internal combustion engines, and or rather, the utility model relates to a kind of diesel engine for automobile exhaust gas particulate size-grade distribution dilution system.
Background technology
Popularize the reinforcement gradually with people's environmental consciousness day by day along with automobile; As diesel engine for automobile an important indicator---emission behavior more and more receives publicity; Each big automobile factory does the necessary link of diesel emission performance test when manufacturing diesel engine, when doing the test of diesel particle size-grade distribution, must emission gases be diluted.Diesel engine for automobile exhaust gas particulate size-grade distribution dilution system need satisfy two conditions:
1. diluted exhaust sample tap place delivery temperature is not higher than 51.7 ℃;
2. appearance gas particles concentration is no more than the measurement upper limit of particle size analyzer.
At present, mostly the exhaust measuring system of domestic employing is that one-level dilution system and two-stage are the secondary dilution system of Partial flow dilution.The delivery temperature of one-level dilution system is higher, can not better satisfy first condition; The secondary dilution system that two-stage is Partial flow dilution then is not easy to calculate dilution ratio, and the exhaustion dilution error is also bigger simultaneously.
Summary of the invention
The utility model technical matters to be solved is to have overcome the above-mentioned weak point that prior art exists, and a kind of diesel engine for automobile exhaust gas particulate size-grade distribution dilution system is provided.
For solving the problems of the technologies described above, the utility model is to adopt following technical scheme to realize: described diesel engine for automobile exhaust gas particulate size-grade distribution dilution system comprises that waste gas isocon, main air filter cleaner, model are that one-level high pressure vacuum blower fan, the main air flowrate control valve of nominal diameter DN=15, Venturi tube, one-level dilution tunnel, two stage filter, the secondary air flowrate control valve of nominal diameter DN=65, secondary dilution tunnel, the model of CZR-LY60 is the sampling probe of EEPS and the secondary high pressure vacuum blower fan that model is DF-2.
The gas outlet of main air filter cleaner and model are that the air intake opening screw thread of one-level high pressure vacuum blower fan of CZR-LY60 is for being tightly connected; Model is that the gas outlet of the one-level high pressure vacuum blower fan of CZR-LY60 is that thread seal is connected with the left end of the main air flowrate control valve of nominal diameter DN=15; The main air flowrate control valve right-hand member of nominal diameter DN=15 and the left end of Venturi tube are fixed seal connection; The upper end of waste gas isocon is stretched in the exhaust pipe of engine; The tube wall of waste gas isocon is that thread seal is connected with the tube wall of the exhaust pipe of engine; The lower end of waste gas isocon is that thread seal is connected with the middle part of Venturi tube; The upper end of the right-hand member of Venturi tube and one-level dilution tunnel is fixed seal connection; The gas outlet of two stage filter is that thread seal is connected with the left end of the secondary air flowrate control valve of nominal diameter DN=65, and the right-hand member of the secondary air flowrate control valve of nominal diameter DN=65 is that thread seal is connected with the left end of secondary dilution tunnel, and the lower end of the middle part of secondary dilution tunnel and one-level dilution tunnel is fixed seal connection; The right-hand member of secondary dilution tunnel and model are that the air intake opening of the secondary high pressure vacuum blower fan of DF-2 is that thread seal is connected, and in one-level dilution tunnel and model are on the secondary dilution tunnel between the secondary high pressure vacuum blower fan of DF-2 the sampling probe that model is EEPS to be installed.
The left end of the right-hand member of the main air flowrate control valve of the nominal diameter DN=15 described in the technical scheme and Venturi tube (6) is that fixed seal connection is meant: the right-hand member of the main air flowrate control valve of nominal diameter DN=15 and the left end of Venturi tube are provided with ring flange; Be placed with the silica gel sealing pad No. 1 between the right-hand member ring flange of the main air flowrate control valve of nominal diameter DN=15 and the left end ring flange of Venturi tube; The left end ring flange of the right-hand member ring flange of the main air flowrate control valve of nominal diameter DN=15, No. 1 silica gel sealing pad and Venturi tube adopts 8 bolt and nuts to be fixed, and the periphery of the left end ring flange of the right-hand member ring flange of the main air flowrate control valve of the nominal diameter DN=15 that is fixed, No. 1 silica gel sealing pad and Venturi tube seals with fluid sealant; The upper end of the right-hand member of described Venturi tube and one-level dilution tunnel is meant for being sealedly and fixedly connected: the upper end of the right-hand member of Venturi tube and one-level dilution tunnel is provided with ring flange; Be placed with the silica gel sealing pad No. 2 between the right-hand member ring flange of Venturi tube and the upper flanges dish of one-level dilution tunnel; The upper flanges dish of the right-hand member ring flange of Venturi tube, No. 2 silica gel sealing pads and one-level dilution tunnel adopts 8 bolt and nuts to be fixed, and the periphery of the upper flanges dish of the right-hand member ring flange of the Venturi tube that is fixed, No. 2 silica gel sealing pads and one-level dilution tunnel seals with fluid sealant; The lower end of the middle part of described secondary dilution tunnel and one-level dilution tunnel is that fixed seal connection is meant: the lower end of the middle part of secondary dilution tunnel and one-level dilution tunnel is provided with ring flange; Be placed with the silica gel sealing pad No. 3 between the ring flange at secondary dilution tunnel middle part and the ring flange of one-level dilution tunnel lower end; The ring flange at secondary dilution tunnel middle part, No. 3 silica gel sealing pads adopt 8 bolt and nuts to be fixed with the ring flange of one-level dilution tunnel lower end, and the periphery of the ring flange of the ring flange in the middle part of the secondary dilution tunnel that is fixed, No. 3 silica gel sealing pads and one-level dilution tunnel lower end seals with fluid sealant.
Compared with prior art the beneficial effect of the utility model is:
1. adopt the described diesel engine for automobile exhaust gas particulate of the utility model size-grade distribution dilution system preferably gas temperature to be controlled at below 50 ℃, guarantee that simultaneously appearance gas particles concentration is no more than the particle size analyzer upper limit, and calculate easy, error is less;
2. the secondary high pressure vacuum blower fan in the described diesel engine for automobile exhaust gas particulate of the utility model size-grade distribution dilution system has guaranteed that at the rear of secondary dilution tunnel the secondary dilution tunnel forms low pressure, can prevent gas backstreaming;
3. simple in structure, easy operating of the described diesel engine for automobile exhaust gas particulate of the utility model size-grade distribution dilution system and maintenance, and cost is lower, and it is also relatively good to be used for diesel particulation particle size distribution test effect.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described:
Fig. 1 is the structural representation of the described diesel engine for automobile exhaust gas particulate of the utility model size-grade distribution dilution system.
Among the figure: 1. the exhaust pipe of engine, 2. waste gas isocon, 3. main air filter cleaner; 4. one-level high pressure vacuum blower fan, 5. main air flowrate control valve, 6. Venturi tube; 7. one-level dilution tunnel, 8. two stage filter, 9. secondary air flowrate control valve; 10. secondary dilution tunnel, 11. sampling probes, 12. secondary high pressure vacuum blower fans.
Embodiment
Below in conjunction with accompanying drawing the utility model is explained in detail:
The utility model discloses a kind of diesel engine for automobile exhaust gas particulate size-grade distribution dilution system, dilution system comprises first order dilution part and second level dilution part, belongs to field of internal combustion engine.The dilution system first order adopts Partial flow dilution; To dilution tunnel the air of steady flow is provided through one-level high pressure vacuum blower fan, the low pressure of utilizing the Venturi tube center to form is introduced the part exhaust in the first order dilution tunnel, through controlling opening of valve; The control air capacity; First order dilution ratio is controlled at about 20, and Full flow dilution is adopted in second level dilution, and the exhaust behind the preliminarily diluted is all introduced in the secondary dilution tunnel; Behind secondary high pressure vacuum blower fan, add the air flow control valve, regulate the air capacity of secondary dilution tunnel and control second level dilution ratio.Through the secondary dilution system, dilution ratio is controlled at more than 100, has better satisfied the measurement requirement of particle size analyzer.
The described diesel engine for automobile exhaust gas particulate of the utility model size-grade distribution dilution system comprises waste gas isocon 2; Main air filter cleaner 3; Model is the one-level high pressure vacuum blower fan 4 of CZR-LY60; The main air flowrate control valve 5 of nominal diameter DN=15; Venturi tube 6; One-level dilution tunnel 7; Two stage filter 8; The secondary air flowrate control valve 9 of nominal diameter DN=65; Secondary dilution tunnel 10; Model is the sampling probe 11 of EEPS; Model is the secondary high pressure vacuum blower fan 12 of DF-2; No. 1 silica gel sealing pad; No. 2 silica gel sealing pads and No. 3 silica gel sealing pads.
All parts are arranged in the same surface level; And all pipelines are cylindrical shape; The gas outlet of main air filter cleaner 3 and model are that the air intake opening thread seal of the one-level high pressure vacuum blower fan 4 of CZR-LY60 is connected, and model is that one-level high pressure vacuum blower fan 4 air inflows of CZR-LY60 are 7m
3/ min; Blast is 1.5kpa; Model is that the gas outlet of the one-level high pressure vacuum blower fan 4 of CZR-LY60 is connected with one (left side) the end thread seal of the main air flowrate control valve 5 of nominal diameter DN=15; Main air flowrate control valve 5 is the rotary valve of nominal diameter DN=15, and another (right side) end of the main air flowrate control valve 5 of nominal diameter DN=15 is fixed seal connection through the left end of bolt and Venturi tube 6.The right-hand member and the left end of Venturi tube 6 that are the main air flowrate control valve 5 of nominal diameter DN=15 are provided with ring flange; Be placed with the silica gel sealing pad No. 1 between the right-hand member ring flange of the main air flowrate control valve 5 of nominal diameter DN=15 and the left end ring flange of Venturi tube 6; The left end ring flange of the right-hand member ring flange of the main air flowrate control valve 5 of nominal diameter DN=15, No. 1 silica gel sealing pad and Venturi tube 6 adopts 8 bolt and nuts to be fixed, and the periphery of the left end ring flange of the right-hand member ring flange of the main air flowrate control valve 5 of the nominal diameter DN=15 that is fixed, No. 1 silica gel sealing pad and Venturi tube 6 seals with fluid sealant.Waste gas isocon 2 be rectangular in shape one (on) end stretch in the exhaust pipe of engine 1; The tube wall of waste gas isocon 2 is that thread seal is connected with the tube wall of the exhaust pipe of engine 1; Another of waste gas isocon 2 (descending) end is connected with the middle part thread seal of Venturi tube 6, and the right-hand member of Venturi tube 6 is sealedly and fixedly connected through bolt and one-level dilution tunnel 7 upper ends.Be that the right-hand member of Venturi tube 6 and the upper end of one-level dilution tunnel 7 are provided with ring flange; Be placed with the silica gel sealing pad No. 2 between the right-hand member ring flange of Venturi tube 6 and the upper flanges dish of one-level dilution tunnel 7; The upper flanges dish of the right-hand member ring flange of Venturi tube 6, No. 2 silica gel sealing pads and one-level dilution tunnel 7 adopts 8 bolt and nuts to be fixed, and the periphery of the upper flanges dish of the right-hand member ring flange of the Venturi tube 6 that is fixed, No. 2 silica gel sealing pads and one-level dilution tunnel 7 seals with fluid sealant.Be the circular cone cavity between Venturi tube 6 middle parts and left end and the right-hand member; The gas outlet of two stage filter 8 is connected with one (left side) the end thread seal of the secondary air flowrate control valve 9 of nominal diameter DN=65; Secondary air flowrate control valve 9 is the rotary valve of nominal diameter DN=65; Another (right side) end of the secondary air flowrate control valve 9 of nominal diameter DN=65 is connected the lower end fixed seal connection of the middle part of secondary dilution tunnel 10 and one-level dilution tunnel 7 with the left end thread seal of secondary dilution tunnel 10.The lower end fixed seal connection of the middle part of described secondary dilution tunnel 10 and one-level dilution tunnel 7 is meant: the lower ends place of connecing of the middle part of secondary dilution tunnel 10 and one-level dilution tunnel 7 is provided with ring flange; Be placed with No. 3 the silica gel sealing pad between the ring flange of the ring flange at secondary dilution tunnel 10 middle parts and one-level dilution tunnel 7 lower ends; The ring flange of the ring flange at secondary dilution tunnel 10 middle parts, No. 3 silica gel sealing pads and one-level dilution tunnel 7 lower ends adopts 8 bolt and nuts to be fixed, and the periphery of the ring flange of the ring flange at secondary dilution tunnel 10 middle parts that are fixed, No. 3 silica gel sealing pads and one-level dilution tunnel 7 lower ends seals with fluid sealant.Afterbody (right-hand member) connection model at secondary dilution tunnel 10 is the secondary high pressure vacuum blower fan 12 of DF-2, and model is that secondary high pressure vacuum blower fan 12 air inflows of DF-2 are 1200m
3/ min; Blast is 2000pa; In one-level dilution tunnel 7 and model be equipped with between the secondary high pressure vacuum blower fan 12 of DF-2 model be the sampling probe 11 of EEPS on secondary dilution tunnel 10, model is that the sampling probe 11 of EEPS is used for the sampling through the diesel engine for automobile exhaust of twice (level) dilution.
The low pressure of utilizing Venturi tube 6 centers to form is introduced the part exhaust in the one-level dilution tunnel 7 and is carried out first order Partial flow dilution, and the gas of Venturi tube 6 all feeds secondary dilution tunnel 10, and promptly second level dilution system adopts Full flow dilution.Connect all requirement sealings with upper-part; The exhaust pipe of engine 1, waste gas isocon 2, model are that secondary air flowrate control valve 9, secondary dilution tunnel 10 and the model of main air flowrate control valve 5, one-level dilution tunnel 7, the nominal diameter DN=65 of one-level high pressure vacuum blower fan 4, the nominal diameter DN=15 of CZR-LY60 is that the secondary high pressure vacuum blower fan 12 of DF-2 is standard component; And on the direction of air flow; Model be the one-level high pressure vacuum blower fan 4 of CZR-LY60 in the place ahead of one-level dilution tunnel 7, and model is secondary high pressure vacuum blower fan 12 rears at secondary dilution tunnel 10 of DF-2.
Diesel engine for automobile exhaust gas particulate size-grade distribution dilution system principle of work:
Under the low pressure effect that Venturi tube 6 forms; Diesel exhaust gas is incorporated in the one-level dilution tunnel 7 by part; Outside air is that one-level high pressure vacuum blower fan 4 effect of CZR-LY60 also gets into through main air filter cleaner 3 down and one-level dilution tunnel 7 in the first order carried out in the suction exhaust and dilute in model; Regulate the main air flowrate control valve 5 of nominal diameter DN=15 and regulate dilution ratio to desired value; Gas after the one-level dilution is all to be passed in the secondary dilution tunnel 10 under the suction function that forms of the secondary high pressure vacuum blower fan 12 of DF-2 through one-level dilution tunnel 7 in model; With mixes through the outside air of two stage filter, carry out the second level and dilute, with the secondary air flowrate control valve 9 control second level dilution ratios of nominal diameter DN=65 to desired value; Exhaust through two-stage dilution is sampling probe 11 samplings of EEPS by model, measures the exhaust gas particulate size-grade distribution.
Claims (4)
1. diesel engine for automobile exhaust gas particulate size-grade distribution dilution system; It is characterized in that described diesel engine for automobile exhaust gas particulate size-grade distribution dilution system comprises that waste gas isocon (2), main air filter cleaner (3), model are that one-level high pressure vacuum blower fan (4), the main air flowrate control valve (5) of nominal diameter DN=15, Venturi tube (6), one-level dilution tunnel (7), two stage filter (8), the secondary air flowrate control valve (9) of nominal diameter DN=65, secondary dilution tunnel (10), the model of CZR-LY60 is the sampling probe (11) of EEPS and the secondary high pressure vacuum blower fan (12) that model is DF-2;
The gas outlet of main air filter cleaner (3) and model are that the air intake opening of the one-level high pressure vacuum blower fan (4) of CZR-LY60 is that thread seal is connected; Model is that the left end of gas outlet and the main air flowrate control valve (5) of nominal diameter DN=15 of the one-level high pressure vacuum blower fan (4) of CZR-LY60 is that thread seal is connected; The right-hand member of the main air flowrate control valve (5) of nominal diameter DN=15 and the left end of Venturi tube (6) are fixed seal connection; The upper end of waste gas isocon (2) is stretched in the exhaust pipe of engine (1); The tube wall of waste gas isocon (2) is that thread seal is connected with the tube wall of the exhaust pipe of engine (1); The lower end of waste gas isocon (2) is that thread seal is connected with the middle part of Venturi tube (6); The upper end of the right-hand member of Venturi tube (6) and one-level dilution tunnel (7) is fixed seal connection; The gas outlet of two stage filter (8) is that thread seal is connected with the left end of the secondary air flowrate control valve (9) of nominal diameter DN=65; The right-hand member of the secondary air flowrate control valve (9) of nominal diameter DN=65 is that thread seal is connected with the left end of secondary dilution tunnel (10); The lower end of the middle part of secondary dilution tunnel (10) and one-level dilution tunnel (7) is fixed seal connection, and the right-hand member of secondary dilution tunnel (10) and model are that the air intake opening of the secondary high pressure vacuum blower fan (12) of DF-2 is that thread seal is connected, and in one-level dilution tunnel (7) and model is on the secondary dilution tunnel (10) between the secondary high pressure vacuum blower fan (12) of DF-2 the sampling probe that model is EEPS (11) to be installed.
2. according to the described diesel engine for automobile exhaust gas particulate of claim 1 size-grade distribution dilution system; It is characterized in that; The right-hand member of the main air flowrate control valve (5) of described nominal diameter DN=15 and the left end of Venturi tube (6) are fixed as to be tightly connected and are meant: the right-hand member of the main air flowrate control valve (5) of nominal diameter DN=15 and the left end of Venturi tube (6) are provided with ring flange; Be placed with the silica gel sealing pad No. 1 between the right-hand member ring flange of the main air flowrate control valve (5) of nominal diameter DN=15 and the left end ring flange of Venturi tube (6); The left end ring flange of the right-hand member ring flange of the main air flowrate control valve (5) of nominal diameter DN=15, No. 1 silica gel sealing pad and Venturi tube (6) adopts 8 bolt and nuts to be fixed, and the periphery of the left end ring flange of the right-hand member ring flange of the main air flowrate control valve (5) of the nominal diameter DN=15 that is fixed, No. 1 silica gel sealing pad and Venturi tube (6) seals with fluid sealant.
3. according to the described diesel engine for automobile exhaust gas particulate of claim 1 size-grade distribution dilution system; It is characterized in that; The upper end of the right-hand member of described Venturi tube (6) and one-level dilution tunnel (7) is meant for being sealedly and fixedly connected: the upper end of the right-hand member of Venturi tube (6) and one-level dilution tunnel (7) is provided with ring flange; Be placed with No. 2 the silica gel sealing pad between the upper flanges dish of the right-hand member ring flange of Venturi tube (6) and one-level dilution tunnel (7); The upper flanges dish of the right-hand member ring flange of Venturi tube (6), No. 2 silica gel sealing pads and one-level dilution tunnel (7) adopts 8 bolt and nuts to be fixed, and the periphery of the upper flanges dish of the right-hand member ring flange of the Venturi tube that is fixed (6), No. 2 silica gel sealing pads and one-level dilution tunnel (7) seals with fluid sealant.
4. according to the described diesel engine for automobile exhaust gas particulate of claim 1 size-grade distribution dilution system; It is characterized in that; The lower end of the middle part of described secondary dilution tunnel (10) and one-level dilution tunnel (7) is that fixed seal connection is meant: the lower end of the middle part of secondary dilution tunnel (10) and one-level dilution tunnel (7) is provided with ring flange; Be placed with the silica gel sealing pad No. 3 between the ring flange at secondary dilution tunnel (10) middle part and the ring flange of one-level dilution tunnel (7) lower end; The ring flange at secondary dilution tunnel (10) middle part, No. 3 silica gel sealing pads adopt 8 bolt and nuts to be fixed with the ring flange of one-level dilution tunnel (7) lower end, and the periphery of the ring flange of the ring flange in the middle part of the secondary dilution tunnel (10) that is fixed, No. 3 silica gel sealing pads and one-level dilution tunnel (7) lower end seals with fluid sealant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204817526U CN202330134U (en) | 2011-11-28 | 2011-11-28 | Diesel engine exhaust particulate grain distribution dilution system for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204817526U CN202330134U (en) | 2011-11-28 | 2011-11-28 | Diesel engine exhaust particulate grain distribution dilution system for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202330134U true CN202330134U (en) | 2012-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204817526U Expired - Fee Related CN202330134U (en) | 2011-11-28 | 2011-11-28 | Diesel engine exhaust particulate grain distribution dilution system for vehicle |
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| Country | Link |
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| CN (1) | CN202330134U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760003A (en) * | 2014-01-27 | 2014-04-30 | 吉林大学 | Dilution system for engine exhaust gas particles |
| CN104458357A (en) * | 2014-10-29 | 2015-03-25 | 中国环境科学研究院 | Extensible pollution source particulate matter sheath gas protection sampling diluter |
| CN104880339A (en) * | 2015-06-18 | 2015-09-02 | 吉林大学 | Gasoline direct-injection engine exhaust particulate thermodilution sampling system |
| CN105277397A (en) * | 2015-11-27 | 2016-01-27 | 堀场仪器（上海）有限公司 | Vehicle tail gas collection device as well as vehicle tail gas detection system and method |
-
2011
- 2011-11-28 CN CN2011204817526U patent/CN202330134U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760003A (en) * | 2014-01-27 | 2014-04-30 | 吉林大学 | Dilution system for engine exhaust gas particles |
| CN104458357A (en) * | 2014-10-29 | 2015-03-25 | 中国环境科学研究院 | Extensible pollution source particulate matter sheath gas protection sampling diluter |
| CN104880339A (en) * | 2015-06-18 | 2015-09-02 | 吉林大学 | Gasoline direct-injection engine exhaust particulate thermodilution sampling system |
| CN104880339B (en) * | 2015-06-18 | 2017-08-25 | 吉林大学 | A kind of direct spray petrol engine in cylinder exhaust gas particulate heat dilution sampling system |
| CN105277397A (en) * | 2015-11-27 | 2016-01-27 | 堀场仪器（上海）有限公司 | Vehicle tail gas collection device as well as vehicle tail gas detection system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20121128 |