CN105201595A - Diesel vehicle tail gas after-treatment device - Google Patents
Diesel vehicle tail gas after-treatment device Download PDFInfo
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- CN105201595A CN105201595A CN201510650203.XA CN201510650203A CN105201595A CN 105201595 A CN105201595 A CN 105201595A CN 201510650203 A CN201510650203 A CN 201510650203A CN 105201595 A CN105201595 A CN 105201595A
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- dpf
- tail gas
- vehicle tail
- gas
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Abstract
The invention provides a diesel vehicle tail gas after-treatment device and relates to the field of diesel vehicle tail gas purification. The device comprises a front section provided with a DOC and a rear section provided with a DPF. Tail gas enters the device from the gas inlet end and is exhausted out of an exhaust end cover at the rear portion after passing through the interior of a shell, the DOC and the DPF. The front side face of the DPF is provided with at least one circular hole with a certain depth. The permeability of part of a filter element is achieved by making part of the end face through, gas permeability is effectively improved, the flow speed is increased, the interior of the filter element is not prone to blockage, and the service life of a filter is prolonged. Meanwhile, part of airflow is increased, swirl airflow is generated, the effect of washing a hole wall is achieved, and the effect of improving catalytic oxidation is further achieved.
Description
Technical field
The present invention relates to diesel car tail gas refining field, be specifically related to a kind of diesel-oil vehicle tail-gas after treatment apparatus.
Background technique
Vehicle exhaust after-treatment device DOC on domestic market and DPF(grain catcher) combinationally use, and DPF major part is the structure of wall-flow type, the cross section of filter core is uniformly distributed a lot of aperture, aperture is axially straight passage at filter core, these hole separation block, be exactly inlet end and outlet side be obstructed, air-flow is through filter element, air outlet hole is penetrated into by hole wall, in the process, particulate matter in motor exhaust is filtered on hole wall, time has been grown and will form carbon distribution, hole will block, vehicle cannot continue to use, affect very large.
Summary of the invention
The object of the present invention is to provide a kind of diesel-oil vehicle tail-gas after treatment apparatus, effectively can increase the permeability of DPF filter core, avoid filter core to block, improve the working life of tail-gas after treatment apparatus.
The present invention realizes by the following technical solutions, a kind of diesel-oil vehicle tail-gas after treatment apparatus, comprise the leading portion being provided with DOC and the back segment being provided with DPF, tail gas enters through inlet end, discharge from rear exhaust end cover after enclosure interior and DOC and DPF, the leading flank of described DPF is provided with the circular hole that at least 1 has certain depth.
Preferably, the degree of depth of described circular hole is more than or equal to the thickness of leading flank sealing layer.
Usefulness of the present invention is, achieving filter core part of pass-though, effectively improve the permeability of gas by getting through portion end surface, strengthens flow velocity, filter core inside is not easily blocked, and increases filter working life.Fraction can be made to increase simultaneously, produce gyration airflow, play the effect of washing away hole wall, also improve the effect of catalytic oxidation further.
Accompanying drawing explanation
Fig. 1 overall structure schematic diagram of the present invention;
Fig. 2 cross section structure schematic diagram of the present invention;
Fig. 3 cross-sectional view of the present invention.
1. leading portions in figure, 2.DOC, 3.DPF, 31. circular holes, 4. back segment, 5. air outlet.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further elaborated.
As depicted in figs. 1 and 2, the invention provides a kind of diesel-oil vehicle tail-gas after treatment apparatus, comprise the leading portion 1 with suction port, the inside of leading portion 1 is provided with DOC2, is provided with DPF3 in back segment 4, and end is provided with air outlet 5, and leading portion 1 and back segment 4 are flexibly connected.Engine exhaust end connects the suction port of leading portion 1, and air-flow, through DOC and DPF, is discharged from the air outlet 5 of back segment.The air inlet end face side of DPF is provided with the circular hole 31 that at least 1 has certain depth.The degree of depth of these circular holes 31 is more than or equal to the thickness of the sealing layer of air inlet end face.
As shown in Figure 3, because filter core passage is the structure that interval is closed, the setting of circular hole 31 is intended to part filter core passage to get through, and makes portion gas directly by filter core passage, strengthens the permeability of air-flow, improves certain deflation rate.And directly by the gas of filter core passage under unbalanced pressure, can return from the rear end of filter core, play the effect of washing away passage and again filtering.Effectively improve the permeability of air-flow, filter is not easily blocked, increase working life.
The foregoing is only preferred embodiment of the present invention, be not used to limit the scope of the claims of the present invention, other use the equivalence of patent spirit of the present invention to change, and all should all belong to the scope of the claims of the present invention.
Claims (2)
1. a diesel-oil vehicle tail-gas after treatment apparatus, comprise the leading portion being provided with DOC and the back segment being provided with DPF, tail gas enters through inlet end, discharge from rear exhaust end cover after enclosure interior and DOC and DPF, it is characterized in that, the leading flank of described DPF is provided with the circular hole that at least 1 has certain depth.
2. diesel-oil vehicle tail-gas after treatment apparatus according to claim 1, is characterized in that, the degree of depth of described circular hole is more than or equal to the thickness of leading flank sealing layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510650203.XA CN105201595A (en) | 2015-10-10 | 2015-10-10 | Diesel vehicle tail gas after-treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510650203.XA CN105201595A (en) | 2015-10-10 | 2015-10-10 | Diesel vehicle tail gas after-treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105201595A true CN105201595A (en) | 2015-12-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510650203.XA Pending CN105201595A (en) | 2015-10-10 | 2015-10-10 | Diesel vehicle tail gas after-treatment device |
Country Status (1)
| Country | Link |
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| CN (1) | CN105201595A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020090324A1 (en) * | 2000-03-09 | 2002-07-11 | Badeau Kurt M.A. | Dual section exhaust aftertreatment filter and method |
| CN1902384A (en) * | 2003-11-25 | 2007-01-24 | 巴布考克日立株式会社 | Particulate matter-containing exhaust emission controlling filter, exhaust emission controlling method and device |
| CN202417657U (en) * | 2011-12-29 | 2012-09-05 | 重庆材料研究院 | Exhaust gas purifier of diesel automobile |
| CN203978566U (en) * | 2014-07-09 | 2014-12-03 | 南京依柯卡特汽车催化器有限公司 | A kind of inserting type automobile catalytic converter device |
| CN204984546U (en) * | 2015-10-10 | 2016-01-20 | 特威泰克环保技术（山东）有限公司 | After -treatment device for diesel vehicle emission |
-
2015
- 2015-10-10 CN CN201510650203.XA patent/CN105201595A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020090324A1 (en) * | 2000-03-09 | 2002-07-11 | Badeau Kurt M.A. | Dual section exhaust aftertreatment filter and method |
| CN1902384A (en) * | 2003-11-25 | 2007-01-24 | 巴布考克日立株式会社 | Particulate matter-containing exhaust emission controlling filter, exhaust emission controlling method and device |
| CN202417657U (en) * | 2011-12-29 | 2012-09-05 | 重庆材料研究院 | Exhaust gas purifier of diesel automobile |
| CN203978566U (en) * | 2014-07-09 | 2014-12-03 | 南京依柯卡特汽车催化器有限公司 | A kind of inserting type automobile catalytic converter device |
| CN204984546U (en) * | 2015-10-10 | 2016-01-20 | 特威泰克环保技术（山东）有限公司 | After -treatment device for diesel vehicle emission |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151230 |
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| RJ01 | Rejection of invention patent application after publication |