CN106468202A - A kind of diesel engine after treatment crystallization-preventive heating and mixing device - Google Patents
A kind of diesel engine after treatment crystallization-preventive heating and mixing device Download PDFInfo
- Publication number
- CN106468202A CN106468202A CN201510502953.2A CN201510502953A CN106468202A CN 106468202 A CN106468202 A CN 106468202A CN 201510502953 A CN201510502953 A CN 201510502953A CN 106468202 A CN106468202 A CN 106468202A
- Authority
- CN
- China
- Prior art keywords
- relay
- heating cylinder
- resistance
- resistance wire
- diesel engine
- 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
- 238000010438 heat treatment Methods 0.000 title claims abstract description 25
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 44
- 235000013877 carbamide Nutrition 0.000 claims abstract description 22
- 239000004202 carbamide Substances 0.000 claims abstract description 22
- 238000002347 injection Methods 0.000 claims abstract description 11
- 239000007924 injection Substances 0.000 claims abstract description 11
- 238000009434 installation Methods 0.000 abstract description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 10
- 229910021529 ammonia Inorganic materials 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000012805 post-processing Methods 0.000 description 3
- 239000002912 waste gas Substances 0.000 description 3
- 238000006555 catalytic reaction Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
-
- 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
- Y02T10/12—Improving ICE efficiencies
-
- 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 kind of diesel engine after treatment crystallization-preventive heating and mixing device, including temperature sensor（1）, relay（2）, power supply（4）, resistance wire（7）, switch（3）, resistance heating cylinder（6）, blender（5）With carbamide injection nozzle（8）, resistance wire（7）It is fixedly installed in resistance heating cylinder（6）Inwall circumference on, temperature sensor（1）With relay（2）Connect, switch（3）, power supply (4), resistance wire (7) is connected in series with relay (2), and resistance heating cylinder (6) is connected with blender (5) and is located in the jeting area of carbamide injection nozzle (8).This device exhaust back pressure is little, simple and compact for structure, easy for installation, can be widely applied in the diesel exhaust gas pipeline with SCR system.
Description
Technical field
The present invention relates to diesel engine after treatment heater.
Background technology
At present, in the dual fuel of diesel engine system with SCR system, after the carbamide injection nozzle being typically employed in catalytic converter in gas exhaust piping, install blender additional, to improve flow perturbation, promote carbamide flow uniformity.But, due to the use of the spray orifice on nozzle being in circumferentially distributed, so jet-impingement direction is perpendicular to wall, when delivery temperature is relatively low, the ammonia in carbamide is easy for crystallization on discharge duct inwall, the carrying out of impact catalytic reaction, reduces NOXTransformation efficiency.
Content of the invention
The present invention provides a kind of diesel engine after treatment crystallization-preventive heating and mixing device, to carbamide injection domain heating, promotes being sufficiently mixed of ammonia and waste gas, realizes the ammonia crystallization in containment carbamide, improves the uniformity that carbamide spraying is mixed with motor exhaust, finally raising NOXCatalytic conversion efficiency.
The present invention is achieved in that a kind of diesel engine after treatment crystallization-preventive heating and mixing device, including temperature sensor, relay, power supply, resistance wire, switch, resistance heating cylinder, blender and carbamide injection nozzle, resistance wire is fixedly installed on the inwall circumference of resistance heating cylinder, temperature sensor is connected with relay, switch, power supply, resistance wire is connected in series with relay, and resistance heating cylinder is connected with blender and is located in the jeting area of carbamide injection nozzle.
The present invention passes through the unlatching of temperature sensor control relay, can realize carbamide is sprayed with the heating in domain, can better promote urea pyrolysis hydrolysis so that being sufficiently mixed of ammonia and waste gas, realize containment urea crystals and improve the uniformity that carbamide spraying is mixed with motor exhaust, finally improve NOXCatalytic conversion efficiency.
Brief description
Fig. 1 is post processing heating and mixing device schematic diagram.
In figure, 1 is temperature sensor, and 2 is relay, and 3 is switch, and 4 is power supply, and 5 is blender, and 6 is resistance heating cylinder, and 7 is resistance wire, and 8 is carbamide injection nozzle.
Specific embodiment
Below according to accompanying drawing 1, the present invention is further described in detail.
As shown in figure 1, a kind of diesel engine after treatment heating and mixing device, including temperature sensor 1, relay 2, power supply 4, resistance wire 7, switch 3, resistance heating cylinder 6, blender 5 and carbamide injection spray 8, resistance wire 7 is fixedly installed on the inwall circumference of resistance heating cylinder 6, and temperature sensor 1 is connected with relay 2, switch 3, power supply 4, resistance wire 7 are connected in series with relay 2, and resistance heating cylinder 6 is connected with blender 5 and is located in the jeting area of carbamide injection nozzle 8.Wherein when switch 3 is under the state of closing, temperature sensor 1, relay 2, power supply 4, resistance wire 7 composition closed-loop path, when aerofluxuss temperature is higher than the low temperature setting, the rising of temperature experienced immediately by relay 2, when temperature relay 2 is experienced temperature and is reached rated function temperature, relay 2 disconnects normally closed interlock, cutting-off controlling circuit immediately, and the temporary transient of post processing heater does not work；And work as engine operating condition change, when row's temperature is less than certain design temperature, relay 2 automatically resets, and acts on switch 3 connection control circuit, and post processing heating and mixing device enters working condition.Due to can control the opening and closing of temperature relay 2 by the change of delivery temperature, finally realize the computer heating control of diesel exhaust aftertreatment system, preferably promote urea pyrolysis hydrolysis, urea crystals during low exhaust temperature can effectively be prevented, blender 5 can promote the ammonia that carbamide decomposition obtains to be sufficiently mixed with waste gas, make catalytic reaction more abundant, improve NOx conversion efficiency.
This device exhaust back pressure is little, simple and compact for structure, easy for installation, can be widely applied in the diesel exhaust gas pipeline with SCR system.
Claims (1)
1. a kind of diesel engine after treatment crystallization-preventive heating and mixing device is it is characterised in that include temperature sensor（1）, relay（2）, power supply（4）, resistance wire（7）, switch（3）, resistance heating cylinder（6）, blender（5）With carbamide injection nozzle（8）, resistance wire（7）It is fixedly installed in resistance heating cylinder（6）Inwall circumference on, temperature sensor（1）With relay（2）Connect, switch（3）, power supply（4）, resistance wire（7）With relay（2）It is connected in series, resistance heating cylinder（6）With blender（5）Connect and be located at carbamide injection nozzle（8）Jeting area in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510502953.2A CN106468202A (en) | 2015-08-17 | 2015-08-17 | A kind of diesel engine after treatment crystallization-preventive heating and mixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510502953.2A CN106468202A (en) | 2015-08-17 | 2015-08-17 | A kind of diesel engine after treatment crystallization-preventive heating and mixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106468202A true CN106468202A (en) | 2017-03-01 |
Family
ID=58214746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510502953.2A Pending CN106468202A (en) | 2015-08-17 | 2015-08-17 | A kind of diesel engine after treatment crystallization-preventive heating and mixing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106468202A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108729990A (en) * | 2017-04-20 | 2018-11-02 | 北华航天工业学院 | A kind of diesel engine after treatment heating and mixing device of anti-urea crystals |
| CN109424402A (en) * | 2017-08-25 | 2019-03-05 | 佛吉亚排放控制技术美国有限公司 | Twin shell blender with active heat transfer |
| CN109578116A (en) * | 2018-11-27 | 2019-04-05 | 安徽江淮汽车集团股份有限公司 | A kind of SCR aftertreatment system preventing urea crystals |
| CN110206620A (en) * | 2019-05-06 | 2019-09-06 | 江苏大学 | A kind of self feed back controllable register formula SCR urea mixer |
| CN113153497A (en) * | 2021-04-20 | 2021-07-23 | 无锡威孚力达催化净化器有限责任公司 | Self-adaptation adds fever type urea decomposition device |
| CN113586208A (en) * | 2021-08-10 | 2021-11-02 | 潍柴动力股份有限公司 | Post-treatment heating control method and device, post-treatment heating system and medium |
Citations (5)
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|---|---|---|---|---|
| CN101915150A (en) * | 2010-09-20 | 2010-12-15 | 中国人民解放军军事交通学院 | Exhaust pipe for enhancing exhaust swirl flow and eliminating spray crystallization of urea solution |
| US20110131958A1 (en) * | 2009-12-04 | 2011-06-09 | International Engine Intellectual Property Company, Llc | System and method for mitigating potential for formation of urea deposits in an engine exhaust system during cold ambient conditions |
| CN102817682A (en) * | 2012-08-03 | 2012-12-12 | 陈志华 | Non-automotive heavy-duty diesel engine SCR (semiconductor control rectifier) device and method |
| CN103742238A (en) * | 2014-01-26 | 2014-04-23 | 清华大学 | Low-temperature heating and mixing device of urea SCR (Selective Catalytic Reduction) system |
| DE102013221641A1 (en) * | 2012-11-16 | 2014-05-22 | Continental Automotive Systems, Inc. | Reducing agent supply unit for SCR systems with improved deposit resistance |
-
2015
- 2015-08-17 CN CN201510502953.2A patent/CN106468202A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110131958A1 (en) * | 2009-12-04 | 2011-06-09 | International Engine Intellectual Property Company, Llc | System and method for mitigating potential for formation of urea deposits in an engine exhaust system during cold ambient conditions |
| CN101915150A (en) * | 2010-09-20 | 2010-12-15 | 中国人民解放军军事交通学院 | Exhaust pipe for enhancing exhaust swirl flow and eliminating spray crystallization of urea solution |
| CN102817682A (en) * | 2012-08-03 | 2012-12-12 | 陈志华 | Non-automotive heavy-duty diesel engine SCR (semiconductor control rectifier) device and method |
| DE102013221641A1 (en) * | 2012-11-16 | 2014-05-22 | Continental Automotive Systems, Inc. | Reducing agent supply unit for SCR systems with improved deposit resistance |
| CN103742238A (en) * | 2014-01-26 | 2014-04-23 | 清华大学 | Low-temperature heating and mixing device of urea SCR (Selective Catalytic Reduction) system |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108729990A (en) * | 2017-04-20 | 2018-11-02 | 北华航天工业学院 | A kind of diesel engine after treatment heating and mixing device of anti-urea crystals |
| CN109424402A (en) * | 2017-08-25 | 2019-03-05 | 佛吉亚排放控制技术美国有限公司 | Twin shell blender with active heat transfer |
| CN109424402B (en) * | 2017-08-25 | 2021-10-15 | 佛吉亚排放控制技术美国有限公司 | Double-walled mixer with active heat transfer |
| CN109578116A (en) * | 2018-11-27 | 2019-04-05 | 安徽江淮汽车集团股份有限公司 | A kind of SCR aftertreatment system preventing urea crystals |
| CN110206620A (en) * | 2019-05-06 | 2019-09-06 | 江苏大学 | A kind of self feed back controllable register formula SCR urea mixer |
| CN110206620B (en) * | 2019-05-06 | 2021-01-15 | 江苏大学 | Self-feedback adjusting baffle type SCR urea mixer |
| CN113153497A (en) * | 2021-04-20 | 2021-07-23 | 无锡威孚力达催化净化器有限责任公司 | Self-adaptation adds fever type urea decomposition device |
| CN113586208A (en) * | 2021-08-10 | 2021-11-02 | 潍柴动力股份有限公司 | Post-treatment heating control method and device, post-treatment heating system and medium |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20170301 |