CN201902253U - Selective catalytic reduction (SCR) urea tank for diesel engine exhaust post-treatment - Google Patents
Selective catalytic reduction (SCR) urea tank for diesel engine exhaust post-treatment Download PDFInfo
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- CN201902253U CN201902253U CN2010206613251U CN201020661325U CN201902253U CN 201902253 U CN201902253 U CN 201902253U CN 2010206613251 U CN2010206613251 U CN 2010206613251U CN 201020661325 U CN201020661325 U CN 201020661325U CN 201902253 U CN201902253 U CN 201902253U
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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
- 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
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Abstract
The utility model relates to a selective catalytic reduction (SCR) urea tank for diesel engine exhaust post-treatment, which belongs to an internal combustion engine waste gas purification system and is characterized in that the urea tank is a pressure container tank with the carrying pressure being 1.0MPa, the upper end of a urea pipe arranged in a tank body is fixed on a urea outlet valve 4 and is communicated with a urea outlet pipe, a temperature sensor, a liquid level sensor, a heating pipe and a pressure sensor are also arranged on the valve seat, and the bottom of the urea tank is provided with a liquid discharge opening. The SCR urea tank provides urea solution with stable pressure for a pneumatic SCR urea spraying system, the metering accuracy and the stability of the urea solution spraying quantity are obviously improved, in addition, the structure is simple, the cost is low, and the SCR urea tank has a high practical value.
Description
Technical field
The utility model relates to a kind of SCR urea tank that is used for diesel exhaust aftertreatment, particularly relate to a kind of urea tank that is used to reduce the selective catalytic reduction system operating SCR (Selective Catalyst Reduction) of Diesel NOx discharging, belong to the internal-combustion engines exhaust gas purifying system.
Background technique
At the effulent of Motor Vehicle, people adopt various method means to eliminate the harmful matter that it contains.The SCR technology is to reduce a kind of very effective method of NOX compound.Motor SCR post-processing technology is that the reducing agent urea liquid is sprayed in the engine exhaust, and under the effect of exhaust gas temperature and air-flow, urea can decompose fast and discharges ammonia, and the NOX reduction is become nitrogen, reaches the effect that reduces NOX.Owing to urea liquid has popularization and the use that advantages such as stable performance, simple, the required reducing agent relative quantity of chemical reaction are few obtain people.Ripe at present urea liquid is supplied with and ejecting system all is that offshore company produces, the employing diaphragm pump structure that has, and the employing gear pump structure that has, system complex, price are very high, all are system supplys, disagree with that breaking system is the components supplying merchant.
Summary of the invention
The purpose of this utility model provides a kind of SCR urea tank that is used for diesel exhaust aftertreatment, it provides the urea liquid of steady pressure for pneumatic type SCR urea-spray system, the metering accuracy and the stability of urea solution jet amount have been improved significantly, and simple in structure, cost is low, have practical value very much.
The technical solution of the utility model is achieved in that a kind of SCR urea tank that is used for diesel exhaust aftertreatment, comprise tank body, valve seat, the inflation solenoid valve, the urea fill valve, the urea outlet valve, pressure-releasing electromagnetic valve, urea pipe in the jar that is provided with in the tank body, it is characterized in that: urea tank is a pressure volume pot, bearing pressure is 1.0MPa, the upper end of urea pipe is fixed on the urea outlet valve 4 and with the urea outer pipe and communicates in the tank body, temperature transducer also is installed on the valve seat, liquid level sensor, heating pipe, pressure transducer, the urea tank bottom is equipped with tap hole.
Described heating pipe is made up of intake pipe, heating pipe, outlet pipe; Wherein intake pipe links to each other with engine water pump outlet port circulating water, also is installed into water solenoid valve on the intake pipe, and outlet pipe communicates with engine cycles water low voltage terminal.
Good effect of the present utility model is at first to adopt urea tank to replace traditional urea box and suction booster, has simplified system architecture, has reduced system cost.Secondly, owing to adopt the pressure of pressurized air and inflation solenoid valve 7 control urea tank in the urea-spray system, so can keep the urea tank internal pressure stable, pulsed pressure wave in the pipe that has reduced significantly to adopt the urea pump supercharging and caused has been eliminated the transient pressure ripple and the SCR ejecting system has been sprayed the adverse effect of measuring.Thereby the metering accuracy and the stability of urea solution jet amount have been improved significantly.
Description of drawings
Fig. 1 is a SCR urea tank structural representation of the present utility model.
Fig. 2 is the plan structure schematic representation of valve seat in the utility model.
Among the figure 1, tap hole, 2, jar in the urea pipe, 3, aqueous solution of urea, 4, urea outlet valve, 5, tank body, 6, the urea fill valve, 7, inflation solenoid valve, 8, gas inlet pipe, 9, the urea outer pipe, 10, intake pipe, 11, entering water electromagnetic valve 12, outlet pipe, 13, exhaust tube, 14, pressure-releasing electromagnetic valve, 15, valve seat, 16, liquid level sensor, 17, temperature transducer, 18, pressure transducer, 19, heating pipe.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described, as shown in Figure 1, a kind of SCR urea tank that is used for diesel exhaust aftertreatment, comprise tank body 5, valve seat 15, inflation solenoid valve 7, urea fill valve 6, urea outlet valve 23, pressure-releasing electromagnetic valve 14, urea pipe 2 in the jar that is provided with in the tank body 5, it is characterized in that: urea tank is a pressure volume pot, bearing pressure is 1.0MPa, the upper end of urea pipe 2 is fixed on the urea outlet valve 4 and with urea outer pipe 9 and communicates in jar, temperature transducer 17 also is installed on the valve seat 15, liquid level sensor 16, heating pipe 19, pressure transducer 18, the urea tank bottom is equipped with tap hole 1.
Urea liquid in the described tank body 5 remains on about 0.8MPa under gas pressure, with the pressure in the inflation solenoid valve 7 control urea tank.
The pressure transducer of arranging on the described urea tank 19 is measured the pressure of urea liquid and is fed back to ECU (Electrical Control Unit); The temperature transducer 17 that is equipped with on urea tank is measured the temperature of urea liquid and is fed back to ECU (Electrical Control Unit); Liquid level sensor 16 also is housed on urea tank, measures the liquid level of urea liquid.
Urea tank tank body 5 adopts stainless steel to make, and also can adopt the metallic material of other anti-urea corrosion to make.As shown in Figure 1, heating pipe 19 is installed on the valve seat 15 on urea tank top, and the heating pipe assembly is made up of intake pipe 10, heating pipe 19, outlet pipe 12; Intake pipe 10 links to each other with engine water pump outlet port circulating water, also is installed into water solenoid valve 11 on the intake pipe 10, and outlet pipe 12 communicates with engine cycles water low voltage terminal.Intake pipe 10 is incorporated into part engine cycles water in the heating pipe 19, carries out heat exchange with urea liquid in the urea tank, and the circulating water of high temperature and aqueous solution of urea carry out getting back to engine water jacket from outlet pipe 12 after the heat exchange and circulate.Turnover water pipe is connected on the valve seat 15, sealing between intake pipe 10 and outlet pipe 12 and the valve seat 15.
Various signals such as the oil temperature that wherein records on the signal that records of temperature transducer 17, liquid level sensor 16, pressure transducer 18 and the motor, water temperature, load, rotating speed are transferred to engine electric-controlled unit (ECU) together.And then regulate inflation 7 opening times of solenoid valve, and then the pressure of control urea liquid according to the control signal of ECU (Electrical Control Unit) output.And when injection finished to empty urea liquid residual in the pipeline, pressure-releasing electromagnetic valve 14 was opened, and the urea tank internal pressure is reduced to barometric pressure.Urea liquid has been got back to urea tank under compressed-air actuated pressure effect, emptied the urea liquid in the urea pipe.
Shown in Fig. 2, inflation solenoid valve 7, entering water electromagnetic valve 11, urea outlet valve 4, pressure-releasing electromagnetic valve 14 are installed on the valve seat 15.Sealing between valve seat 15 and the urea tank tank body 5.
Claims (2)
1. SCR urea tank that is used for diesel exhaust aftertreatment, comprise urea pipe in the jar that is provided with in tank body, valve seat, inflation solenoid valve, urea fill valve, urea outlet valve, pressure-releasing electromagnetic valve, the tank body, it is characterized in that: urea tank is a pressure volume pot, bearing pressure is 1.0MPa, the upper end of urea pipe is fixed on the urea outlet valve and with the urea outer pipe and communicates in the tank body, temperature transducer, liquid level sensor, heating pipe, pressure transducer also are installed on the valve seat, and the urea tank bottom is equipped with tap hole.
2. a kind of SCR urea tank that is used for diesel exhaust aftertreatment according to claim 1 is characterized in that described heating pipe is made up of intake pipe, heating pipe, outlet pipe; Wherein intake pipe links to each other with engine water pump outlet port circulating water, also is installed into water solenoid valve on the intake pipe, and outlet pipe communicates with engine cycles water low voltage terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206613251U CN201902253U (en) | 2010-12-15 | 2010-12-15 | Selective catalytic reduction (SCR) urea tank for diesel engine exhaust post-treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206613251U CN201902253U (en) | 2010-12-15 | 2010-12-15 | Selective catalytic reduction (SCR) urea tank for diesel engine exhaust post-treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201902253U true CN201902253U (en) | 2011-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206613251U Expired - Fee Related CN201902253U (en) | 2010-12-15 | 2010-12-15 | Selective catalytic reduction (SCR) urea tank for diesel engine exhaust post-treatment |
Country Status (1)
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| CN (1) | CN201902253U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022164A (en) * | 2010-12-15 | 2011-04-20 | 中国第一汽车集团公司 | Selective catalyst reduction (SCR) urea tank for after-treatment of exhaust gas of diesel engine |
| CN103511044A (en) * | 2013-09-30 | 2014-01-15 | 天津亿利汽车环保科技有限公司 | Scr temperature control system |
| CN103511039A (en) * | 2013-09-30 | 2014-01-15 | 天津亿利汽车环保科技有限公司 | Pneumatic type urea injection system |
| WO2014032356A1 (en) * | 2012-08-28 | 2014-03-06 | 亚普汽车部件股份有限公司 | Automobile urea tank and forming method thereof |
| CN104712399A (en) * | 2013-12-17 | 2015-06-17 | 现代自动车株式会社 | Urea solution venting system for vehicle |
| CN105626204A (en) * | 2016-03-08 | 2016-06-01 | 苏州新力迈特汽车系统有限公司 | Air-assisted mixing type air-drive urea injection system and method |
| CN106555647A (en) * | 2015-09-30 | 2017-04-05 | 罗伯特·博世有限公司 | Fluid supply assembly |
| CN108533370A (en) * | 2018-03-26 | 2018-09-14 | 安徽江淮汽车集团股份有限公司 | A kind of integrated system of urea tank and metering pump |
| CN108590823A (en) * | 2018-01-10 | 2018-09-28 | 东风商用车有限公司 | Urea tank |
-
2010
- 2010-12-15 CN CN2010206613251U patent/CN201902253U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022164A (en) * | 2010-12-15 | 2011-04-20 | 中国第一汽车集团公司 | Selective catalyst reduction (SCR) urea tank for after-treatment of exhaust gas of diesel engine |
| WO2014032356A1 (en) * | 2012-08-28 | 2014-03-06 | 亚普汽车部件股份有限公司 | Automobile urea tank and forming method thereof |
| US9415681B2 (en) | 2012-08-28 | 2016-08-16 | Yapp Automotive Parts Co., Ltd. | Automobile urea tank forming method |
| CN103511044A (en) * | 2013-09-30 | 2014-01-15 | 天津亿利汽车环保科技有限公司 | Scr temperature control system |
| CN103511039A (en) * | 2013-09-30 | 2014-01-15 | 天津亿利汽车环保科技有限公司 | Pneumatic type urea injection system |
| CN103511044B (en) * | 2013-09-30 | 2015-12-02 | 天津亿利汽车环保科技有限公司 | Scr temperature control system |
| CN104712399A (en) * | 2013-12-17 | 2015-06-17 | 现代自动车株式会社 | Urea solution venting system for vehicle |
| CN106555647B (en) * | 2015-09-30 | 2021-08-10 | 罗伯特·博世有限公司 | Fluid supply assembly |
| CN106555647A (en) * | 2015-09-30 | 2017-04-05 | 罗伯特·博世有限公司 | Fluid supply assembly |
| CN105626204A (en) * | 2016-03-08 | 2016-06-01 | 苏州新力迈特汽车系统有限公司 | Air-assisted mixing type air-drive urea injection system and method |
| CN108590823A (en) * | 2018-01-10 | 2018-09-28 | 东风商用车有限公司 | Urea tank |
| CN108590823B (en) * | 2018-01-10 | 2023-11-17 | 东风商用车有限公司 | Urea tank |
| CN108533370A (en) * | 2018-03-26 | 2018-09-14 | 安徽江淮汽车集团股份有限公司 | A kind of integrated system of urea tank and metering pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110720 Termination date: 20191215 |