CN107100704A - Anti-leak and jamproof radio frequency cut-off ring suitable for DPF radio-frequency measurements - Google Patents
Anti-leak and jamproof radio frequency cut-off ring suitable for DPF radio-frequency measurements Download PDFInfo
- Publication number
- CN107100704A CN107100704A CN201710451421.XA CN201710451421A CN107100704A CN 107100704 A CN107100704 A CN 107100704A CN 201710451421 A CN201710451421 A CN 201710451421A CN 107100704 A CN107100704 A CN 107100704A
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- Prior art keywords
- radio
- dpf
- ring
- leak
- jamproof
- 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.)
- Pending
Links
- 238000005259 measurement Methods 0.000 title claims abstract description 34
- 239000002184 metal Substances 0.000 claims abstract description 37
- 229910052751 metal Inorganic materials 0.000 claims abstract description 37
- 208000002925 dental caries Diseases 0.000 claims abstract description 14
- 238000005476 soldering Methods 0.000 claims abstract description 3
- 229910000679 solder Inorganic materials 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 9
- 230000001976 improved effect Effects 0.000 abstract description 4
- 238000003466 welding Methods 0.000 abstract description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 230000008929 regeneration Effects 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 230000033458 reproduction Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
- F01N2900/06—Parameters used for exhaust control or diagnosing
- F01N2900/16—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust apparatus, e.g. particulate filter or catalyst
- F01N2900/1606—Particle filter loading or soot amount
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Abstract
The present invention relates to one kind, anti-leak and jamproof radio frequency end ring suitable for DPF radio-frequency measurements, the radio frequency cut-off ring includes metal dish, the metal dish is separately positioned on DPF cavitys and air inlet pipe and the junction of two sections of blast pipe, the metal dish anchor ring and is evenly distributed with multiple through holes；The metal dish is connected with DPF cavitys junction by the way of multiple spot soldering.The present invention in the junction of cavity and air inlet pipe and two sections of blast pipe by respectively welding a metal dish for being equipped with multiple through holes, prevent the leakage and the interference of external radio-frequency signal of the radiofrequency signal of internal measurement simultaneously on the premise of the distribution of cavity flow field is improved, be conducive to applying the method further genralrlization of radio-frequency measurement to market.
Description
Technical field
The present invention relates to a kind of auxiliary equipment of grain catcher, more particularly, to one kind suitable for DPF radio-frequency measurements
Anti-leak and jamproof radio frequency cut-off ring.
Background technology
Contain a large amount of pellets in diesel engine vent gas, be detrimental to health, discharged and marked according to the state V newly issued
Standard, strict requirements are suffered from for particulate matter quality (PM) and quantity (PN), and heavy-duty diesel vehicle meets the general need of Abgasgesetz
To use grain catcher (DPF).DPF is by the way that the particle collection in exhaust to be realized to the mesh of cleaning on filtering bodies wall
, but when particulate matter is accumulated to a certain extent, DPF can be caused to block, cause exhaust back pressure to raise, Fuel Economy
Situations such as reduction, it is therefore desirable to by periodic regeneration DPF is operated under optimal operating mode.When carbon carrying capacity reaches regeneration
, it is necessary to start regeneration during setting limit value, therefore accurately judge that carbon carrying capacity is the important prerequisite regenerated in DPF.
Technology new at this stage is measured using the means of radio frequency.But in actual measurement process, due to examining
Consider DPF and there is huge hole with importing and exporting exhaust pipe junction, be easily caused radiofrequency signal and occur revealing and outside
The situation of interference effect measurement, but the increase structure in junction can influence cavity Flow Field Distribution to a certain extent, cause
Filtering bodies trapping effect declines, and only solving this problem conscientiously could be by the method further genralrlization of radio-frequency measurement to market
Using.
The content of the invention
It is directed to radio-frequency technique monitoring carbon carrying capacity and realizes what extraneous radiofrequency signal during DPF accurate reproductions was likely to result in
Influence and be directed to radio-frequency technique monitoring carbon carrying capacity to realize radiofrequency signal leakage during DPF accurate reproductions in measurement process
Cause survey measurement inaccurate, the invention provides a kind of anti-leak and jamproof radio frequency suitable for DPF radio-frequency measurements
End ring.
One kind anti-leak and jamproof radio frequency cut-off ring suitable for DPF radio-frequency measurements, the radio frequency cut-off ring include
Metal dish, the metal dish is separately positioned on DPF cavitys and air inlet pipe and the junction of two sections of blast pipe, the metal dish anchor ring
On be evenly distributed with multiple through holes.
Preferably, the metal dish is connected with DPF cavitys junction by the way of multiple spot soldering.
Preferably, the metal dish be separately fixed at DPF cavitys with into and out of 10mm in the tail gas adapter linkage section of tracheae
The position at place.It can effectively prevent tail gas adapter caliber too big and cause microwave from leakage to influence the generation of resonance phenomena, in addition
It ensure that tail gas steadily can be flowed into smoothly in cavity.
Preferably, a diameter of 22~35mm of metal dish.
Preferably, several a diameter of 4~12mm first through hole has been uniformly distributed on the metal dish anchor ring, straight
Footpath is the second through hole that several a diameter of 3~9mm have been uniformly distributed on 8~12mm anchor ring.
Preferably, the metal disc thickness is 6~10mm.
Preferably, the metal dish is spot welded with DPF cavitys junction using eight, solder joint is uniformly distributed.Can have
Effect prevents gap leakage.
Preferably, a diameter of 28mm of metal dish.
Preferably, eight a diameter of 8mm first through hole has been uniformly distributed on the metal dish anchor ring, a diameter of
Four a diameter of 6mm the second through hole has been uniformly distributed on 10mm anchor ring.
Preferably, the metal disc thickness is 8mm.
The present invention is by the way that in the junction of cavity and air inlet pipe and two sections of blast pipe, respectively welding one is equipped with multiple through holes
Metal dish, prevents leakage and the outside of the radiofrequency signal of internal measurement simultaneously on the premise of the distribution of cavity flow field is improved
The interference of radiofrequency signal, is conducive to applying the method further genralrlization of radio-frequency measurement to market.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation that the present invention is set；
Fig. 3 be have in the embodiment of the present invention 1 radio frequency end ring axial velocity distribution map；
Fig. 4 is the distribution map of the axial velocity without radio frequency cut-off ring in the embodiment of the present invention 1；
Fig. 5 is the distribution map of the axial velocity after through hole increase in the embodiment of the present invention 2；
Fig. 6 is the distribution map of the axial velocity after through hole reduces in the embodiment of the present invention 3.
Embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings, but invention which is intended to be protected is simultaneously
Not limited to this.
Embodiment 1
Reference picture 1, Fig. 2, one kind anti-leak and jamproof radio frequency cut-off ring suitable for DPF radio-frequency measurements are described to penetrate
Frequency cut-off ring includes metal dish 1, and the metal dish is separately positioned on the connection of DPF cavitys 2 and 4 two sections of air inlet pipe 3 and blast pipe
Multiple through holes are evenly distributed with place, the anchor ring of metal dish 1.On a diameter of 28mm of the metal dish 1, the metal dish anchor ring
Be uniformly distributed eight a diameter of 8mm first through hole 5, be uniformly distributed on a diameter of 10mm anchor ring four it is a diameter of
6mm the second through hole 6；The thickness of metal dish 1 is 8mm.
The metal dish 1 is spot welded with the junction of DPF cavitys 2 using eight, and solder joint is uniformly distributed, and can effectively prevent seam
Gap is revealed.The metal dish is separately fixed at DPF cavitys and into and out of the position at 10mm in the tail gas adapter linkage section of tracheae,
The setting of the position, can effectively prevent that tail gas adapter caliber is too big and causes microwave from leakage to influence the generation of resonance phenomena, separately
It also ensure that tail gas steadily can be flowed into smoothly in cavity outside.
Find that the frequency for the microwave that apparatus of the present invention are used is more than 2GHz by emulating, corresponding wavelength is 50mm.And work as
When aperture is less than 1/4 wavelength, microwave will not be revealed.Additionally by flow dynamics analysis, radio frequency has been added to change after ending ring
The flow field of kind cavity.
Flow field improved effect：
End the magnetic field simulation under ring progress cavity flow field to radio frequency by Fluent fluid mechanical emulations software to simulate, from
And verifying the present invention is improving effect present on cavity flow field.
In general, the gas inlet speed of diesel vehicle grain catcher changes as diesel engine condition changes, work as bavin
When oil machine rotating speed changes between 800r/min to 3000r/min, the gas inlet speed of grain catcher is in 20m/s to 90m/
Change between s.So we choose tri- kinds of exhaust velocities of 20m/s, 50m/s, 80m/s for representative to be studied.Angle is expansion
Subtended angle, A, which is represented, calculates section, because our PDF cavitys are a rotary bodies, enters so we intercept a section A along axis
Row fluid mechanical emulation.
Selection is that under conditions of 90 °, being respectively compared in the present embodiment has radio frequency to end ring cavity body and without penetrating in expansion angle
Frequency ends the distribution of axial velocity on A sections under ring cavity body tri- speed of 20m/s, 50m/s, 80m/s, as a result such as Fig. 3, Fig. 4 institute
Show.Can be evident that from figure added radio frequency end ring after section A speed ratio it is more uniform, with radial position
Change is little, so the Flow Field Distribution in cavity can be improved to a certain extent by having added radio frequency to end ring so that enter filtering
The tail gas of body is more uniform.
Anti-leak result：
In order to ensure the signal in measurement process will not be revealed, radio frequency leak detection experiment has been carried out.According to theory, when what is used
The frequency of microwave is more than 2GHz, and the corresponding wavelength of 2GHz is 50mm.And when aperture is less than 1/4 wavelength, microwave will not be revealed, because
We need only assure that the minimum frequency range of frequency will not be revealed in the case of this measurement leakage.
We are by being 17.5dBm by power, and frequency is individually positioned in cavity and cavity for 2GHz radio frequency occurring source
Outside, measurement occurring source and receiving point receive for 1cm, 10cm and 50cm situation in distance obtain energy respectively, judge that radio frequency is penetrated
Frequency cut-off ring obstructs the ratio of energy, as a result as shown in table 1：
Table 1
Note：It is all to subtract background that source reception antenna in cavity, which receives energy and the source reception antenna outside cavity and receives energy,
After emittance/mW
The radio frequency energy ratio revealed as can be seen from Table 1 by the present invention outside is no more than 0.01%, substantially
It can be ignored；Illustrate that the present invention can effectively prevent the leakage of radio frequency energy.
Anti-jamming effectiveness：
In order to ensure the present invention can effectively prevent from causing the inaccuracy of measurement because the energy attenuation produced is revealed.
Carry out anti-jamming effectiveness to be tested, power during using radio-frequency measurement carbon carrying capacity, is by we using device
17.5dBm, frequency is respectively that 1.75GHz~2.0GHz radio frequency occurring source is placed on containment portion apart from radio frequency cut-off ring distance
At 1cm, whether measurement result causes influence in observation measurement process, as a result as shown in table 2：
Table 2
Although change as can be seen from Table 2 with the frequency of external interference radio frequency source, measure obtained image and changing,
But, we do not change at the resonant frequency peak of selected measurement, the power of the amplitude simply received of change, so
In 1.8~2GHz, this frequency range is unaffected our cavity.
Embodiment 2
Influence of the radio frequency cut-off ring under different size designs for flow field is compared for, is fixed not in design number of openings
Change influence of the different through-hole diameter sizes for Flow Field Distribution in the case of change.Select under conditions of expansion angle is 90 °,
The a diameter of 9mm of radio frequency cut-off ring first through hole, the second through-hole diameter are 7mm, i.e., radio frequency ends ring in chamber after clear size of opening increase
Under tri- speed of body 20m/s, 50m/s, 80m/s on A sections axial velocity distribution, as a result as shown in Figure 5.Can be with from Fig. 5
It is evident that the speed ratio after having added radio frequency cut-off ring in section A is more uniform, but after clear size of opening increase, with implementation
It is compared in example 1 under the conditions of through-hole aperture, as radial position is changed greatly, so the radio frequency cut-off after clear size of opening increase
Ring can improve the Flow Field Distribution in cavity to a certain extent, but be also to have necessarily to influence for Flow Field Distribution.
Embodiment 3
Influence of the radio frequency cut-off ring under different size designs for flow field is compared for, is fixed not in design number of openings
Change influence of the different through-hole diameter sizes for Flow Field Distribution in the case of change.Select under conditions of expansion angle is 90 °,
The a diameter of 5mm of radio frequency cut-off ring first through hole, the second through-hole diameter are that radio frequency ends ring in chamber after 3mm, i.e. clear size of opening reduce
Under tri- speed of body 20m/s, 50m/s, 80m/s on A sections axial velocity distribution, as a result as shown in Figure 6.Can be with from Fig. 6
Find out, the through hole of reduced size can make it that the tail gas for entering filtering bodies in cavity is more uniform, but clear size of opening reduces meeting
Both sides Flow Field Distribution is caused peak value occurred, and Flow Field Distribution also occurs in that certain disorder, while to a certain extent
Increase flow resistance.
Claims (10)
1. one kind anti-leak and jamproof radio frequency cut-off ring suitable for DPF radio-frequency measurements, it is characterised in that：The radio frequency is cut
Only ring includes metal dish, and the metal dish is separately positioned on DPF cavitys and air inlet pipe and the junction of two sections of blast pipe, the gold
Category disk ring is evenly distributed with multiple through holes on face.
2. anti-leak and jamproof radio frequency cut-off ring, its feature the radio-frequency measurement according to claim 1 suitable for DPF
It is：The metal dish is connected with DPF cavitys junction by the way of multiple spot soldering.
3. anti-leak and jamproof radio frequency cut-off ring, its feature the radio-frequency measurement according to claim 1 suitable for DPF
It is：The metal dish be separately fixed at DPF cavitys with into and out of the position at 10mm in the tail gas adapter linkage section of tracheae.
4. anti-leak and jamproof radio frequency cut-off ring, its feature the radio-frequency measurement according to claim 1 suitable for DPF
It is：A diameter of 22~the 35mm of metal dish.
5. anti-leak and jamproof radio frequency cut-off ring, its feature the radio-frequency measurement according to claim 1 suitable for DPF
It is：Several a diameter of 4~12mm first through hole is uniformly distributed on the metal dish anchor ring, in a diameter of 8~12mm
Anchor ring on be uniformly distributed several a diameter of 3~9mm the second through hole.
6. anti-leak and jamproof radio frequency cut-off ring, its feature the radio-frequency measurement according to claim 1 suitable for DPF
It is：The metal disc thickness is 6~10mm.
7. anti-leak and jamproof radio frequency cut-off ring, its feature the radio-frequency measurement according to claim 2 suitable for DPF
It is：The metal dish is spot welded with DPF cavitys junction using eight, and solder joint is uniformly distributed.
8. anti-leak and jamproof radio frequency cut-off ring, its feature the radio-frequency measurement according to claim 4 suitable for DPF
It is：The a diameter of 28mm of metal dish.
9. anti-leak and jamproof radio frequency cut-off ring, its feature the radio-frequency measurement according to claim 8 suitable for DPF
It is：Eight a diameter of 8mm first through hole has been uniformly distributed on the metal dish anchor ring, on a diameter of 10mm anchor ring
Even the second through hole that distributed four a diameter of 6mm.
10. anti-leak and jamproof radio frequency cut-off ring the radio-frequency measurement according to claim 9 suitable for DPF, it is special
Levy and be：The metal disc thickness is 8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710451421.XA CN107100704A (en) | 2017-06-15 | 2017-06-15 | Anti-leak and jamproof radio frequency cut-off ring suitable for DPF radio-frequency measurements |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710451421.XA CN107100704A (en) | 2017-06-15 | 2017-06-15 | Anti-leak and jamproof radio frequency cut-off ring suitable for DPF radio-frequency measurements |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107100704A true CN107100704A (en) | 2017-08-29 |
Family
ID=59660728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710451421.XA Pending CN107100704A (en) | 2017-06-15 | 2017-06-15 | Anti-leak and jamproof radio frequency cut-off ring suitable for DPF radio-frequency measurements |
Country Status (1)
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040159358A1 (en) * | 2001-03-16 | 2004-08-19 | Brueck Rolf | Method and apparatus for producing a honeycomb body, and a honeycomb body |
| US20070101705A1 (en) * | 2005-07-26 | 2007-05-10 | Caterpillar Inc. | Particulate loading monitoring system |
| CN201025098Y (en) * | 2007-04-17 | 2008-02-20 | 郗志强 | An exhaust cleaner for diesel engine |
| US20100212299A1 (en) * | 2009-02-25 | 2010-08-26 | Jacob George | Methods for determining when to regenerate exhaust gas particulate filters |
| US20110167810A1 (en) * | 2010-01-12 | 2011-07-14 | Lebas Jerome | Flow device for exhaust treatment system |
| US20120017570A1 (en) * | 2010-07-22 | 2012-01-26 | Caterpillar Inc. | Ash Detection In Diesel Particulate Filter |
| WO2012034335A1 (en) * | 2010-09-15 | 2012-03-22 | 中兴通讯股份有限公司 | Device and method for enabling radio frequency leakage cacellation and radio frequency identification (rfid) reader |
| US20140223887A1 (en) * | 2011-07-28 | 2014-08-14 | Frédéric Duault | Method and device for measuring the concentration of soot particles in an exhaust gas, in particular from an internal combustion engine |
| CN104411929A (en) * | 2012-06-18 | 2015-03-11 | 康明斯知识产权公司 | Filter regeneration using filter temperature modulation |
| CN205370692U (en) * | 2015-12-28 | 2016-07-06 | 浙江交通职业技术学院 | Microwave heating regeneration type diesel engine particle trap |
| CN106415285A (en) * | 2014-06-06 | 2017-02-15 | 滤波器感知技术有限公司 | Radio frequency state variable measurement system and method |
| CN207018071U (en) * | 2017-06-15 | 2018-02-16 | 浙江大学 | One kind anti-leak and jamproof radio frequency cut-off ring suitable for DPF radio-frequency measurements |
-
2017
- 2017-06-15 CN CN201710451421.XA patent/CN107100704A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040159358A1 (en) * | 2001-03-16 | 2004-08-19 | Brueck Rolf | Method and apparatus for producing a honeycomb body, and a honeycomb body |
| US20070101705A1 (en) * | 2005-07-26 | 2007-05-10 | Caterpillar Inc. | Particulate loading monitoring system |
| CN201025098Y (en) * | 2007-04-17 | 2008-02-20 | 郗志强 | An exhaust cleaner for diesel engine |
| US20100212299A1 (en) * | 2009-02-25 | 2010-08-26 | Jacob George | Methods for determining when to regenerate exhaust gas particulate filters |
| CN102713188A (en) * | 2010-01-12 | 2012-10-03 | 唐纳森公司 | Flow device for exhaust treatment system |
| US20110167810A1 (en) * | 2010-01-12 | 2011-07-14 | Lebas Jerome | Flow device for exhaust treatment system |
| US20120017570A1 (en) * | 2010-07-22 | 2012-01-26 | Caterpillar Inc. | Ash Detection In Diesel Particulate Filter |
| WO2012034335A1 (en) * | 2010-09-15 | 2012-03-22 | 中兴通讯股份有限公司 | Device and method for enabling radio frequency leakage cacellation and radio frequency identification (rfid) reader |
| US20140223887A1 (en) * | 2011-07-28 | 2014-08-14 | Frédéric Duault | Method and device for measuring the concentration of soot particles in an exhaust gas, in particular from an internal combustion engine |
| CN104411929A (en) * | 2012-06-18 | 2015-03-11 | 康明斯知识产权公司 | Filter regeneration using filter temperature modulation |
| CN106415285A (en) * | 2014-06-06 | 2017-02-15 | 滤波器感知技术有限公司 | Radio frequency state variable measurement system and method |
| CN205370692U (en) * | 2015-12-28 | 2016-07-06 | 浙江交通职业技术学院 | Microwave heating regeneration type diesel engine particle trap |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20170829 |