CN102322318B - Automobile tail gas treatment device - Google Patents
Automobile tail gas treatment device Download PDFInfo
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- CN102322318B CN102322318B CN201110211619.3A CN201110211619A CN102322318B CN 102322318 B CN102322318 B CN 102322318B CN 201110211619 A CN201110211619 A CN 201110211619A CN 102322318 B CN102322318 B CN 102322318B
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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention relates to an automobile tail gas treatment device. The device comprises a tail gas treatment device shell, a diesel particulate filter (DPF) carrier and a diesel oxidation catalyst (DOC) carrier, wherein the DOC carrier is arranged in the tail gas treatment device shell; a bypass and a DOC carrier channel are arranged in the tail gas treatment device shell; the two channels share an inlet and an outlet of the tail gas treatment device shell; the DPF carrier is arranged at the outlet of the tail gas treatment device shell; and an electronic control unit (ECU) of an automobile controls a controlled bypass inlet regulating valve and a controlled inlet regulating valve of the DOC carrier and determines tail gas flow directions in the two channels. A DPF technology can be applied under the condition that the oil quality of diesel is complex in China at present, and the environment-friendly requirement of automobile tail gas emission is met; and the poisoning phenomenon of a DOC is avoided, so the content of noble metal in the catalyst can be reduced, and the cost of the catalyst is reduced.
Description
Technical field
The present invention relates to a kind of diesel locomotive draining technology field, relate to specifically a kind of automobile exhaust gas processing apparatus.
Background technique
Along with Chinese exhaust emission standard constantly adds sternly, vehicle tail gas after-treatment device is used in a large number.Ru Guo Sihe state five discharge phase, grain catcher system (being called for short DPF system) can be filtered the carbon granule that 90% above diesel engine produces, and thoroughly changes the phenomenon of diesel-oil vehicle over-emitting black exhaust.This technology is the mainstream technology route of the states such as America and Europe and Japan, transported, but using the prerequisite of this technology is the diesel oil that vehicle must use low sulfur content, as the sulphur content of diesel oil must be lower than 50PPM by ripe.But because China oil product is widely different, as also having at present the diesel oil of 1400PPM sulphur content to use on market, can cause like this post-processing catalyst poisoning, lose activity, reprocessing is damaged.
Air-flow is by granule capturing system, and particle is constantly filtered, and stores in DPF system.After vehicle operating a period of time, carbon granule can be deposited in DPF, at this moment needs the de-carbon that heats up to DPF.Conventional is that HC and CO motor not having be burnt by oxidation catalyzer DOC is oxidized now, produces high temperature.But the sulphide in fuel oil can make the noble metal in oxidation catalyzer DOC poisoning, cannot be oxidized HC and CO, cannot produce high temperature like this, the effect of the eliminating particle of DPF cannot be carried out.
Summary of the invention
In order to overcome above-mentioned defect, the technical problem to be solved in the present invention is to provide a kind of automobile exhaust gas processing apparatus.Can avoid oxidation catalyzer DOC carrier poisoning, meet national environmental protection portion to motor vehicle exhaust emission new demand.
For solving the problems of the technologies described above, the present invention is by being achieved by the following technical solutions:
A kind of automobile exhaust gas processing apparatus, comprise exhaust gas processing device housing, grain catcher DPF carrier, oxidation catalyzer DOC carrier, the import of exhaust gas processing device housing consists of the channel entrance of oxidation catalyzer DOC carrier and the import of bypass, oxidation catalyzer DOC carrier be located at exhaust gas processing device housing inside and with its coaxial line, oxidation catalyzer DOC carrier is positioned at the passage of oxidation catalyzer DOC carrier, controlled bypass inlet modulating valve is positioned at the inlet of the bypass of exhaust gas processing device housing, controllable oxidization catalyst converter DOC carrier inlet adjusting valve is positioned at the channel entrance place of the oxidation catalyzer DOC carrier of exhaust gas processing device housing, after merging, the channel outlet of oxidation catalyzer DOC carrier and the outlet of bypass form the outlet of exhaust gas processing device housing, the outlet of exhaust gas processing device housing is communicated with the import of grain catcher DPF carrier, controlled bypass inlet modulating valve and controllable oxidization catalyst converter DOC carrier inlet adjusting valve are controlled by the ECU of automobile.
Controlled bypass inlet modulating valve and controllable oxidization catalyst converter DOC carrier inlet adjusting valve are discoideus valve and the valve plate core of the two shares a rotating shaft, and the plane at the valve plate core place of controlled bypass inlet modulating valve is vertical with the plane at the valve plate core place of controllable oxidization catalyst converter DOC carrier inlet adjusting valve.
Controlled bypass inlet modulating valve has two, and the valve plate core of two controlled bypass inlet modulating valve, in same plane, and is located at respectively the both sides of controllable oxidization catalyst converter DOC carrier inlet adjusting valve.
The shared valve plate core rotating shaft of the valve plate core of controlled bypass inlet modulating valve and controllable oxidization catalyst converter DOC carrier inlet adjusting valve valve plate core is by solenoid-driven.
The invention has the beneficial effects as follows:
Grain catcher DPF technology can be survived under complicated situation at the current diesel fuel oil of China very much, can reduce because oxidation catalyzer DOC oxidability is excessively strong simultaneously, cause sulphate to generate too much, while causing grain catcher dpf regeneration, occur the white cigarette of high concentration.Also can reduce nitrogen dioxide growing amount, meet national environmental protection portion to motor vehicle exhaust emission new demand simultaneously.Owing to not needing to consider oxidation catalyzer DOC intoxicating phenomenon, so can reduce the content of catalyst converter noble metal, lower the cost of catalyst converter.
Accompanying drawing explanation
Fig. 1 is one of structural principle schematic diagram of the present invention (when automobile normally moves)
Fig. 2 is two (during dpf regeneration processes) of structural principle schematic diagram of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described
Embodiment: referring to Fig. 1, Fig. 2.
A kind of automobile exhaust gas processing apparatus, comprise exhaust gas processing device housing 5, grain catcher DPF carrier 4, oxidation catalyzer DOC carrier 3, the import of exhaust gas processing device housing 5 consists of the channel entrance of oxidation catalyzer DOC carrier 3 and the import of bypass, oxidation catalyzer DOC carrier 3 be located at exhaust gas processing device housing 5 inside and with its coaxial line, oxidation catalyzer DOC carrier 3 is positioned at the passage of oxidation catalyzer DOC carrier 3, controlled bypass inlet modulating valve 1 is positioned at the inlet of the bypass of exhaust gas processing device housing 5, controllable oxidization catalyst converter DOC carrier inlet adjusting valve 2 is positioned at the channel entrance place of the oxidation catalyzer DOC carrier 3 of exhaust gas processing device housing 5, after merging, the channel outlet of oxidation catalyzer DOC carrier 3 and the outlet of bypass form the outlet of exhaust gas processing device housing 5, the outlet of exhaust gas processing device housing 5 is communicated with the import of grain catcher DPF carrier 4, controlled bypass inlet modulating valve 1 is controlled with the ECU of controllable oxidization catalyst converter DOC carrier inlet adjusting valve 2 by automobile.
Controlled bypass inlet modulating valve 1 is discoideus valve with controllable oxidization catalyst converter DOC carrier inlet adjusting valve 2 and the valve plate core of the two shares a rotating shaft, and the plane at the valve plate core place of controlled bypass inlet modulating valve 1 is vertical with the plane at the valve plate core place of controllable oxidization catalyst converter DOC carrier inlet adjusting valve 2.
Controlled bypass inlet modulating valve 1 has two, and the valve plate core of two controlled bypass inlet modulating valve 1, in same plane, and is located at respectively the both sides of controllable oxidization catalyst converter DOC carrier inlet adjusting valve.
The shared valve plate core rotating shaft of the valve plate core of controlled bypass inlet modulating valve 1 and controllable oxidization catalyst converter DOC carrier inlet adjusting valve 2 valve plate cores is by solenoid-driven.
For the ease of understanding, provide working procedure principle of the present invention below:
(1), during automobile normal running, grain catcher DPF is without regeneration
Fig. 1 is the normal run time organization principle schematic of automobile of the present invention, the state that controlled bypass inlet modulating valve 1 is opened, and bypass line is open-minded, the state that controllable oxidization catalyst converter DOC carrier inlet adjusting valve 2 cuts out, oxidation catalyzer DOC carrier path blockade.Air-flow to grain catcher DPF carrier, can avoid oxidation catalyzer DOC carrier to contact with the waste gas of high sulfur content by by-pass like this, reduces the poisoning probability of oxidation catalyzer DOC carrier.
(2), automobile is in grain catcher dpf regeneration process
Fig. 2 is the structural principle schematic diagram of PDF regenerative process of the present invention.The ECU issuing command of automobile, drive solenoid valve (not shown), solenoid valve is opened, drive vacuum driving mechanism to produce action, drive valve plate mandrel, thereby drive whole valve plate core group 90-degree rotation angle, controlled bypass inlet modulating valve 1 cuts out, bypass line is closed, and controllable oxidization catalyst converter DOC carrier inlet adjusting valve 2 is opened, and oxidation catalyzer DOC carrier path is opened.Air-flow is by oxidation catalyzer DOC carrier, and CO and HC are oxidized, produces the high temperature of 600 degree at grain catcher DPF carrier inlet, and the carbon granule in grain catcher DPF carrier is burned.
Grain catcher DPF is because recovery time relative time is short, and general about 10 minutes, and temperature high (general 500 degree left and right), sulphate is decomposed, and is not easy to be attached on the noble metal of oxidation catalyzer DOC, so can avoid catalyst poisoning.
What embodiments of the invention were announced is preferred embodiment; but be not limited to this; those of ordinary skill in the art; very easily according to above-described embodiment; understand spirit of the present invention; and make different amplifications and variation, but only otherwise depart from spirit of the present invention, all in protection scope of the present invention.
Claims (3)
1. an automobile exhaust gas processing apparatus, comprise exhaust gas processing device housing (5), grain catcher DPF carrier (4), oxidation catalyzer DOC carrier (3), it is characterized in that: the import of exhaust gas processing device housing (5) consists of the channel entrance of oxidation catalyzer DOC carrier (3) and the import of bypass, oxidation catalyzer DOC carrier (3) be located at exhaust gas processing device housing (5) inside and with its coaxial line, oxidation catalyzer DOC carrier (3) is positioned at the passage of oxidation catalyzer DOC carrier (3), controlled bypass inlet modulating valve (1) is positioned at the inlet of the bypass of exhaust gas processing device housing (5), controllable oxidization catalyst converter DOC carrier inlet adjusting valve (2) is positioned at the channel entrance place of the oxidation catalyzer DOC carrier (3) of exhaust gas processing device housing (5), after merging, the channel outlet of oxidation catalyzer DOC carrier (3) and the outlet of bypass form the outlet of exhaust gas processing device housing (5), the outlet of exhaust gas processing device housing (5) is communicated with the import of grain catcher DPF carrier (4), controlled bypass inlet modulating valve (1) is controlled with the ECU of controllable oxidization catalyst converter DOC carrier inlet adjusting valve (2) by automobile, controlled bypass inlet modulating valve (1) is discoideus valve with controllable oxidization catalyst converter DOC carrier inlet adjusting valve (2) and the valve plate core of the two shares a rotating shaft, the plane at the valve plate core place of controlled bypass inlet modulating valve (1) is vertical with the plane at the valve plate core place of controllable oxidization catalyst converter DOC carrier inlet adjusting valve (2).
2. a kind of automobile exhaust gas processing apparatus according to claim 1, it is characterized in that: controlled bypass inlet modulating valve (1) has two, the valve plate core of two controlled bypass inlet modulating valve (1), in same plane, and is located at respectively the both sides of controllable oxidization catalyst converter DOC carrier inlet adjusting valve (2).
3. a kind of automobile exhaust gas processing apparatus according to claim 1, is characterized in that: the shared valve plate core rotating shaft of the valve plate core of controlled bypass inlet modulating valve (1) and controllable oxidization catalyst converter DOC carrier inlet adjusting valve (2) valve plate core is by solenoid-driven.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110211619.3A CN102322318B (en) | 2011-07-27 | 2011-07-27 | Automobile tail gas treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110211619.3A CN102322318B (en) | 2011-07-27 | 2011-07-27 | Automobile tail gas treatment device |
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| Publication Number | Publication Date |
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| CN102322318A CN102322318A (en) | 2012-01-18 |
| CN102322318B true CN102322318B (en) | 2014-04-30 |
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| CN201110211619.3A Active CN102322318B (en) | 2011-07-27 | 2011-07-27 | Automobile tail gas treatment device |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102013212801B4 (en) * | 2013-07-01 | 2016-02-25 | Ford Global Technologies, Llc | Arrangement for exhaust aftertreatment for an internal combustion engine and method for operating an internal combustion engine |
| JP6281324B2 (en) * | 2014-03-05 | 2018-02-21 | トヨタ自動車株式会社 | Control device for internal combustion engine |
| US9739223B2 (en) * | 2015-11-18 | 2017-08-22 | Ford Global Technologies, Llc | System and method for bypassing a particulate filter |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE60238235D1 (en) * | 2001-09-07 | 2010-12-23 | Mitsubishi Motors Corp | Device for exhaust emission control of an engine |
| JPWO2004018850A1 (en) * | 2002-08-26 | 2005-12-15 | 株式会社日立製作所 | Diesel engine exhaust gas purification apparatus and exhaust gas purification method |
| JP2004346828A (en) * | 2003-05-22 | 2004-12-09 | Hino Motors Ltd | Exhaust emission control device |
| JP2007239699A (en) * | 2006-03-10 | 2007-09-20 | Mitsubishi Motors Corp | Vehicle exhaust emission control device |
| CN2911201Y (en) * | 2006-05-29 | 2007-06-13 | 周松奎 | Diesel engine fail gas purifier |
| FR2948148B1 (en) * | 2009-07-15 | 2011-06-24 | Inst Francais Du Petrole | METHOD AND SYSTEM FOR CONTROLLING ACTIVE REGENERATION OF A DIESEL PARTICULATE FILTER |
| CN202157844U (en) * | 2011-07-27 | 2012-03-07 | 江铃汽车股份有限公司 | Automobile exhaust gas processing device |
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