CN104047687A - Catalytic conversion device for heavy-duty vehicle - Google Patents
Catalytic conversion device for heavy-duty vehicle Download PDFInfo
- Publication number
- CN104047687A CN104047687A CN201410312672.6A CN201410312672A CN104047687A CN 104047687 A CN104047687 A CN 104047687A CN 201410312672 A CN201410312672 A CN 201410312672A CN 104047687 A CN104047687 A CN 104047687A
- Authority
- CN
- China
- Prior art keywords
- urea
- carrier block
- catalytic
- outlet pipe
- catalytic converter
- 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
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Classifications
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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
-
- 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
Landscapes
- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
A catalytic conversion device for a heavy-duty vehicle comprises an exhaust pipe connected with an engine, a silencer shell installed at the tail end of the exhaust pipe, a tail pipe installed at the tail end of the silencer shell and a catalytic converter installed inside the silencer shell. A urea spraying nozzle is arranged inside the exhaust pipe and connected to a urea tank through a pipeline. The catalytic converter comprises a plurality of carrier blocks and a cylindrical shell body, wherein the carrier blocks are made from cordierite ceramics and are coated with a vanadium-based catalyst, the shell body is wrapped on the peripheries of the carrier blocks, the two ends of the shell body are open, and each carrier block is provided with a plurality of through holes. A urea solution in the urea tank is sprayed into the exhaust pipe through the urea spraying nozzle. The atomized urea solution and tail gas generated through combustion of the engine are mixed, then flow into the silencer shell and enters the catalytic converter. As the carrier blocks are coated with the vanadium-based catalyst, the mixture of the urea and the tail gas flows through the through holes in the carrier blocks and react under the action of the vanadium-based catalyst, and therefore nitric oxide in the tail gas is reduced.
Description
Technical field
The present invention relates to engine exhaust technical field, be specifically related to a kind of heavy goods vehicles catalytic convention design.
Background technique
The formation of diesel-oil vehicle fuel mixture is carried out engine combustion is indoor, and diesel oil high pressure sprays into firing chamber, carries out the diffusion combustion mode of spray limit, limit burning after compression ignition.This working method, has determined that diesel oil and mixing of air are inhomogeneous, inevitably has local anoxic or local oxygen enrichment situation.Oil plant is when high temperature anoxic, and easily charing forms soot.The adjusting of diesel-oil vehicle load is controlled by changing fuel injection quantity.Diesel-oil vehicle mixed gas all the time under rarer state, that is to say in the firing chamber of diesel engine and has all the time air more than needed.These air more than needed easily produce nitrogen oxide (NOx) under high temperature action, and carbon monoxide (CO) and hydrocarbon (HC) are not easy to form.Therefore, emission of diesel engine feature is that particulate matter and nitrogen oxide (NOx) discharge amount are many and carbon monoxide (CO) and hydrocarbon (HC) discharge amount are few.
The tail gas that contains nitrogen oxide after the engine combustion of existing heavy goods vehicles does not directly enter atmosphere by vent systems after treatment, has caused the pollution of environment.
Summary of the invention
The present invention, in order to overcome the deficiency of above technology, provides a kind of heavy goods vehicles catalytic convention design of effective reduction engine nox emission.
The present invention overcomes the technological scheme that its technical problem adopts:
Catalytic convention design for this heavy goods vehicles, comprise the suppressor case that is connected in waste pipe, is installed on outlet pipe tail end, be installed on the tailpipe of suppressor case tail end and be installed on the catalytic converter in suppressor case, in described outlet pipe, be provided with urea nozzle, described urea nozzle is connected in urea box by the road, described catalytic converter comprise some by cordierite ceramic, made for apply catalytic component based on vanadium carrier block, be wrapped in the housing that is tubular of the both ends open of carrier block periphery, in described carrier block, be provided with some open-works.
In order to control uremic, play spray, also comprise the temperature transducer being installed in outlet pipe, described temperature transducer is electrically connected on DCU control unit.
In order to measure nitrogen oxide emission, also comprise the nitrogen oxide sensor being installed in tailpipe, described nitrogen oxide sensor is electrically connected on vehicle ECU.
In order to prevent from damaging carrier block, between above-mentioned carrier block and housing, be provided with liner.
In order to improve water absorption rate and to keep good intensity, the gap between each open-work of above-mentioned carrier block is 1.27mm.
The invention has the beneficial effects as follows: urea nozzle is mapped to the spraying urea liquid in urea box in outlet pipe, after the tail gas producing with engine combustion after its atomization mixes, flow in suppressor case, and enter in catalytic converter, because carrier block is coated with catalytic component based on vanadium, therefore urea flows through the open-work in carrier block and reacts under the effect of catalytic component based on vanadium with the mixture of tail gas, thereby reduced the nitrogen oxide in tail gas, thereby guaranteed that tail gas meets environmental protection standard while discharging from tailpipe.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is catalytic converter cross-sectional view;
In figure, 1. motor 2. outlet pipe 3. urea nozzle 4. suppressor case 5. temperature transducer 6. catalytic converter 7. nitrogen oxide sensor 8. tailpipe 9. carrier block 10. liner 11. housings.
Embodiment
Below in conjunction with accompanying drawing 1, the present invention will be further described for accompanying drawing 2.
Catalytic convention design for this heavy goods vehicles, comprise be connected in motor 1 outlet pipe 2, be installed on outlet pipe 2 tail ends suppressor case 4, be installed on the tailpipe 8 of suppressor case 4 tail ends and be installed on the catalytic converter 6 in suppressor case 4, in outlet pipe 2, be provided with urea nozzle 3, urea nozzle 3 is connected in urea box by the road, catalytic converter 6 comprise some by cordierite ceramic, made for apply catalytic component based on vanadium carrier block 9, be wrapped in the housing that is tubular 11 of the both ends open of carrier block 9 peripheries, in carrier block 9, be provided with some open-works.Urea nozzle 3 is mapped to the spraying urea liquid in urea box in outlet pipe 2, after mixing, the tail gas producing with motor 1 burning after its atomization flows in suppressor case 4, and enter in catalytic converter 6, because carrier block 9 is coated with catalytic component based on vanadium, therefore urea flows through the open-work in carrier block 9 and reacts under the effect of catalytic component based on vanadium with the mixture of tail gas, thereby reduced the content of the nitrogen oxide in tail gas, thereby guaranteed that tail gas meets environmental protection standard while discharging from tailpipe 8.
Can also comprise the temperature transducer 5 being installed in outlet pipe 2, temperature transducer 5 is electrically connected on DCU control unit.Temperature transducer 5 is monitored the temperature value in outlet pipe 2 in real time, and temperature value is fed back to DCU control unit, and DCU control unit is controlled rising of urea and sprayed temperature, to reach better work requirements.
Can also comprise the nitrogen oxide sensor 7 being installed in tailpipe 8, nitrogen oxide sensor 7 is electrically connected on vehicle ECU.Nitrogen oxide sensor can be monitored the amount of nitrogen oxides of the tail gas after catalytic converter 6 is processed in tailpipe 8 in real time, and by measurement feedback to vehicle ECU, if too high levels ECU can control the alarm indication of bridge instrumentation platform, to remind in time driver to process.
Between carrier block 9 and housing 11, can be provided with liner 10, liner 10 can effectively prevent carrier block 9 damage when vibrations, has improved the reliability of using.Gap between each open-work of carrier block 9 is 1.27mm.Now carrier block also possesses higher mechanical strength when possessing good water absorption rate, has improved working life.
Claims (5)
1. a heavy goods vehicles catalytic convention design, it is characterized in that: comprise the outlet pipe (2) that is connected in motor (1), be installed on the suppressor case (4) of outlet pipe (2) tail end, be installed on the tailpipe (8) of suppressor case (4) tail end and be installed on the catalytic converter (6) in suppressor case (4), in described outlet pipe (2), be provided with urea nozzle (3), described urea nozzle (3) is connected in urea box by the road, described catalytic converter (6) comprise some by cordierite ceramic, made for applying the carrier block (9) of catalytic component based on vanadium, be wrapped in the housing that is tubular (11) of the peripheral both ends open of carrier block (9), described carrier block is provided with some open-works on (9).
2. heavy goods vehicles catalytic convention design according to claim 1, is characterized in that: also comprise the temperature transducer (5) being installed in outlet pipe (2), described temperature transducer (5) is electrically connected on DCU control unit.
3. heavy goods vehicles catalytic convention design according to claim 1, is characterized in that: also comprise the nitrogen oxide sensor (7) being installed in tailpipe (8), described nitrogen oxide sensor (7) is electrically connected on vehicle ECU.
4. according to the heavy goods vehicles catalytic convention design described in claim 1 or 2 or 3, it is characterized in that: between described carrier block (9) and housing (11), be provided with liner (10).
5. heavy goods vehicles catalytic convention design according to claim 4, is characterized in that: the gap between each open-work of described carrier block (9) is 1.27mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410312672.6A CN104047687A (en) | 2014-07-03 | 2014-07-03 | Catalytic conversion device for heavy-duty vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410312672.6A CN104047687A (en) | 2014-07-03 | 2014-07-03 | Catalytic conversion device for heavy-duty vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104047687A true CN104047687A (en) | 2014-09-17 |
Family
ID=51501022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410312672.6A Pending CN104047687A (en) | 2014-07-03 | 2014-07-03 | Catalytic conversion device for heavy-duty vehicle |
Country Status (1)
| Country | Link |
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| CN (1) | CN104047687A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1503055A1 (en) * | 2003-08-01 | 2005-02-02 | MAN Nutzfahrzeuge Aktiengesellschaft | Vehicle with a special arrangement of a fuel tank, a secondary muffler and a reduction agent tank |
| JP2006322343A (en) * | 2005-05-17 | 2006-11-30 | Nissan Diesel Motor Co Ltd | Exhaust emission control device of engine and structure of exhaust pipe used for the same |
| CN101705857A (en) * | 2009-11-30 | 2010-05-12 | 天津雷沃动力股份有限公司 | Temperature signal feedback device of urea-spray after-treatment system of engine |
| CN203347898U (en) * | 2013-07-08 | 2013-12-18 | 潍柴动力股份有限公司 | Integrated selective catalytic reduction (SCR) catalytic silencer |
| CN103696834A (en) * | 2013-11-11 | 2014-04-02 | 潍柴动力股份有限公司 | SCR (selective catalytic reduction) catalytic noise elimination system and SCR catalytic noise eliminator thereof |
| CN204003018U (en) * | 2014-07-03 | 2014-12-10 | 中国重汽集团济南动力有限公司 | A kind of heavy goods vehicles catalytic convention design |
-
2014
- 2014-07-03 CN CN201410312672.6A patent/CN104047687A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1503055A1 (en) * | 2003-08-01 | 2005-02-02 | MAN Nutzfahrzeuge Aktiengesellschaft | Vehicle with a special arrangement of a fuel tank, a secondary muffler and a reduction agent tank |
| JP2006322343A (en) * | 2005-05-17 | 2006-11-30 | Nissan Diesel Motor Co Ltd | Exhaust emission control device of engine and structure of exhaust pipe used for the same |
| CN101705857A (en) * | 2009-11-30 | 2010-05-12 | 天津雷沃动力股份有限公司 | Temperature signal feedback device of urea-spray after-treatment system of engine |
| CN203347898U (en) * | 2013-07-08 | 2013-12-18 | 潍柴动力股份有限公司 | Integrated selective catalytic reduction (SCR) catalytic silencer |
| CN103696834A (en) * | 2013-11-11 | 2014-04-02 | 潍柴动力股份有限公司 | SCR (selective catalytic reduction) catalytic noise elimination system and SCR catalytic noise eliminator thereof |
| CN204003018U (en) * | 2014-07-03 | 2014-12-10 | 中国重汽集团济南动力有限公司 | A kind of heavy goods vehicles catalytic convention design |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140917 |