CN101975101A - SCR urea system for non-deflation emptying pipeline of pneumatic single-urea box - Google Patents
SCR urea system for non-deflation emptying pipeline of pneumatic single-urea box Download PDFInfo
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- CN101975101A CN101975101A CN2010105131025A CN201010513102A CN101975101A CN 101975101 A CN101975101 A CN 101975101A CN 2010105131025 A CN2010105131025 A CN 2010105131025A CN 201010513102 A CN201010513102 A CN 201010513102A CN 101975101 A CN101975101 A CN 101975101A
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- urea
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- pipeline
- pressurized gas
- urea box
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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
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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
- Y02T10/40—Engine management systems
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- Exhaust Gas After Treatment (AREA)
Abstract
The invention relates to a SCR urea system for a non-deflation emptying pipeline of a pneumatic single-urea box, which comprises a urea liquid filling opening, a urea box, a water heating pipeline, urea liquid temperature and liquid level signals, atmospheric temperature signals, SCR inlet temperature signals, NOx signals, urea box pressure signals, ECU control signals which are divided into signals I, signals II and signals III, a urea ejector, a urea ejector cooling pipeline, a urea box heating control valve, a compressed gas control valve A, a compressed gas electromagnetic valve B, a compressed gas pipeline a, a compressed gas pipeline b, a urea perfusion pipe and a urea liquid filter. The invention is characterized in that the urea liquid filling opening, the temperature and liquid level sensor, the urea box pressure sensor, the heating pipeline, the compressed gas pipeline a and the compressed gas pipeline b are arranged on the urea box; the compressed gas electromagnetic valve is arranged in the compressed gas pipeline a between an automobile gas reservoir and the urea box; the urea liquid filter is arranged in a urea liquid supply pipeline between the urea box and the urea liquid ejector; and the ECU signals control the compressed gas control valve A, the compressed gas electromagnetic valve B and the urea liquid ejector. The invention has small gas consumption, reduces the system cost, breaks through the situation that international suppliers monopolize the field, and fully exerts the advantages of independent development.
Description
Technical field
The present invention relates to the non-venting of the single urea box of a kind of pneumatic type and empty pipeline SCR urea system.
Background technique
Ripe at present urea liquid is supplied with and ejecting system all is that offshore company produces, the employing diaphragm pump structure that has, the employing gear pump structure that has, empty urea liquid in the pipeline by automatically controlled pump suck-back, empty not thoroughly, system complex, price are very high, all be system supply, disagree with that breaking system is the components supplying merchant.
Summary of the invention
The object of the present invention is to provide the non-venting of the single urea box of a kind of pneumatic type to empty pipeline SCR urea system, its air consumption is little, reduces cost, and breaks the situation that international suppliers monopolizes this field, gives full play to the advantage of independent development, is convenient to the layout of car load.
Technological scheme of the present invention is achieved in that the non-venting of the single urea box of a kind of pneumatic type empties pipeline SCR urea system, by urea liquid filler, urea box, the water heating pipe line, urea liquid temp and liquid level signal, the atmospheric temperature signal, SCR inlet temperature signal, the NOx signal, the urea box pressure signal, the ECU control signal is divided into the signal I, the signal II, the signal III, the urea-spray device, urea-spray device cooling line, the urea box heat control valve, pressurized gas control valve A and pressurized gas solenoid valve B, pressurized gas pipeline a and pressurized gas pipeline b, the urea indusion tube, urea liquid filter cleaner is formed; It is characterized in that: arrange urea liquid filler above the urea box, temperature and liquid level sensor, the urea box pressure transducer, heating pipe line, pressurized gas pipeline a and pressurized gas pipeline b, the pressurized gas solenoid valve is located among the pressurized gas pipeline a between automobile gas receiver and the urea box, and urea liquid filter cleaner is located in the urea liquid supply pipeline between urea box and the urea fluid injector; ECU SC sigmal control pressurized gas control valve A and two solenoid valves of pressurized gas solenoid valve B and urea fluid injector.
Whether described ECU control signal is controlled the urea box heat control valve and is heated according to the atmospheric temperature and the urea box temperature information of input.
Described ECU control signal is judged whether needs filling urea liquid of secondary urea box according to the urea box liquid level information of input.
Described ECU control signal is controlled the working state of urea-spray device according to SCR inlet temperature, urea the temperature inside the box, ambient temperature, the urea box liquid level information of input.
Good effect of the present invention is that air consumption is little, reduces system cost, breaks the situation that international suppliers monopolizes this field, gives full play to the advantage of independent development.
Description of drawings
Fig. 1 is a system schematic of the present invention.
Embodiment
The present invention will be further described below in conjunction with accompanying drawing: the non-venting of the single urea box of a kind of as shown in Figure 1 pneumatic type empties pipeline SCR urea system, by urea liquid filler 1, urea box 2, water heating pipe line 3, urea liquid temp and liquid level signal 4, atmospheric temperature signal 5, SCR inlet temperature signal 6, NOx signal 7, urea box pressure signal 10, the ECU control signal is divided into signal I 8, signal II 9, signal III 11, urea-spray device 12, urea-spray device cooling line 13, urea box heat control valve 16, pressurized gas control valve A14 and pressurized gas solenoid valve B20, pressurized gas pipeline a15 and pressurized gas pipeline b19, urea indusion tube 17, urea liquid filter cleaner 18 is formed; It is characterized in that: arrange urea liquid filler 1 above the urea box, temperature and liquid level sensor 4, urea box pressure transducer 10, heating pipe line 3, pressurized gas pipeline a15 and pressurized gas pipeline b19, the pressurized gas solenoid valve is located among the pressurized gas pipeline a15 between automobile gas receiver and the urea box, and urea liquid filter cleaner 18 is located in the urea liquid supply pipeline 17 between urea box 2 and the urea fluid injector 12.ECU SC sigmal control pressurized gas control valve A 14 and 20 two solenoid valves of pressurized gas solenoid valve B and urea fluid injector 12.
Whether the ECU control signal is controlled the urea box heat control valve and is heated according to the atmospheric temperature and the urea box temperature information of input.
The ECU control signal is judged whether needs filling urea liquid of secondary urea box according to the urea box liquid level information of input.
The ECU control signal is controlled the working state of urea-spray device according to SCR inlet temperature, urea the temperature inside the box, ambient temperature, the urea box liquid level information of input.
The ECU control signal judges according to the input of NOx information whether vehicle satisfies the requirement of OBD, judges whether system works is normal, and carries out work according to the requirement of matching and calibration.
Urea liquid in the urea box is according to the pressure of input deliver a letter breath and closes compression gas control valve A14 and pressurized gas solenoid valve B20 by ECU, open urea-spray device 12, urea liquid arrives urea-spray device place by urea liquid filter cleaner 18 backs under the gas pressure effect like this, and the requirement of demarcating according to engine emission sprays in the outlet pipe effect of realization reduction NOx by the urea fluid injector.
When the environment minimum temperature is lower than-11 C car load powered-downs, stop back ECU according to nominal data closes compression gas control valve A14 at first, open pressurized gas solenoid valve B20, simultaneously open urea nozzle in short-term, empty urea liquid in urea pipe and the filter cleaner in urea box.ECU controls the switch of pressurized gas control valve A14 and pressurized gas solenoid valve B20 according to the information of demarcation and various inputs.
Claims (4)
1. the non-venting of the single urea box of a pneumatic type empties pipeline SCR urea system, is divided into signal I, signal II, signal III, urea-spray device, urea-spray device cooling line, urea box heat control valve, pressurized gas control valve A and pressurized gas solenoid valve B, pressurized gas pipeline a and pressurized gas pipeline b, urea indusion tube, urea liquid filter cleaner are formed by urea liquid filler, urea box, water heating pipe line, urea liquid temp and liquid level signal, atmospheric temperature signal, SCR inlet temperature signal, NOx signal, urea box pressure signal, ECU control signal; It is characterized in that: arrange urea liquid filler above the urea box, temperature and liquid level sensor, the urea box pressure transducer, heating pipe line, pressurized gas pipeline a and pressurized gas pipeline b, the pressurized gas solenoid valve is located among the pressurized gas pipeline a between automobile gas receiver and the urea box, and urea liquid filter cleaner is located in the urea liquid supply pipeline between urea box and the urea fluid injector; ECU SC sigmal control pressurized gas control valve A and two solenoid valves of pressurized gas solenoid valve B and urea fluid injector.
2. the non-venting of the single urea box of a kind of pneumatic type according to claim 1 empties pipeline SCR urea system, it is characterized in that described ECU control signal controls the urea box heat control valve according to the atmospheric temperature of input and urea box temperature information and whether heat.
3. the non-venting of the single urea box of a kind of pneumatic type according to claim 1 empties pipeline SCR urea system, it is characterized in that described ECU control signal judges whether needs filling urea liquid of secondary urea box according to the urea box liquid level information of input.
4. the non-venting of the single urea box of a kind of pneumatic type according to claim 1 empties pipeline SCR urea system, it is characterized in that described ECU control signal controls the working state of urea-spray device according to SCR inlet temperature, urea the temperature inside the box, ambient temperature, the urea box liquid level information of input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105131025A CN101975101A (en) | 2010-10-20 | 2010-10-20 | SCR urea system for non-deflation emptying pipeline of pneumatic single-urea box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105131025A CN101975101A (en) | 2010-10-20 | 2010-10-20 | SCR urea system for non-deflation emptying pipeline of pneumatic single-urea box |
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| Publication Number | Publication Date |
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| CN101975101A true CN101975101A (en) | 2011-02-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010105131025A Pending CN101975101A (en) | 2010-10-20 | 2010-10-20 | SCR urea system for non-deflation emptying pipeline of pneumatic single-urea box |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278222A (en) * | 2011-08-30 | 2011-12-14 | 潍柴动力股份有限公司 | Tail gas aftertreatment system and method for diesel engine |
| CN105156182A (en) * | 2015-09-17 | 2015-12-16 | 苏州亿利亚科汽车系统有限公司 | Selective catalytic reduction (SCR) injection system and method |
| CN107849959A (en) * | 2015-07-29 | 2018-03-27 | 沃尔沃建筑设备公司 | The device and its control method that are used for cooling and heating urea solution for building machinery |
| TWI655361B (en) * | 2016-11-10 | 2019-04-01 | 日商豐田自動車股份有限公司 | Exhaust control device for internal combustion engine and control method for exhaust control device |
| CN113606017A (en) * | 2021-06-30 | 2021-11-05 | 徐工集团工程机械股份有限公司科技分公司 | Loader and delayed power-off control device and control method thereof |
| CN114483267A (en) * | 2022-02-23 | 2022-05-13 | 一汽解放汽车有限公司 | Supply device and control method for SCR (selective catalytic reduction) dual-injection urea for vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008152105A1 (en) * | 2007-06-12 | 2008-12-18 | Continental Automotive Gmbh | Urea dosing system for an internal combustion engine and a method and a device for dosing urea using the urea dosing system |
| WO2009110130A1 (en) * | 2008-03-07 | 2009-09-11 | ボッシュ株式会社 | Controller for reducer feeding device, method for collecting reducer, and exhaust emission control device |
| CN101737127A (en) * | 2008-11-25 | 2010-06-16 | 无锡油泵油嘴研究所 | SCP urea injection system for post treatment of diesel engine emissions |
| CN201858014U (en) * | 2010-10-20 | 2011-06-08 | 中国第一汽车集团公司 | Selective catalytic reduction (SCR) urea liquid supplying and spraying system of non-deflation emptying pipeline of single urea box |
-
2010
- 2010-10-20 CN CN2010105131025A patent/CN101975101A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008152105A1 (en) * | 2007-06-12 | 2008-12-18 | Continental Automotive Gmbh | Urea dosing system for an internal combustion engine and a method and a device for dosing urea using the urea dosing system |
| WO2009110130A1 (en) * | 2008-03-07 | 2009-09-11 | ボッシュ株式会社 | Controller for reducer feeding device, method for collecting reducer, and exhaust emission control device |
| CN101737127A (en) * | 2008-11-25 | 2010-06-16 | 无锡油泵油嘴研究所 | SCP urea injection system for post treatment of diesel engine emissions |
| CN201858014U (en) * | 2010-10-20 | 2011-06-08 | 中国第一汽车集团公司 | Selective catalytic reduction (SCR) urea liquid supplying and spraying system of non-deflation emptying pipeline of single urea box |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278222A (en) * | 2011-08-30 | 2011-12-14 | 潍柴动力股份有限公司 | Tail gas aftertreatment system and method for diesel engine |
| CN107849959A (en) * | 2015-07-29 | 2018-03-27 | 沃尔沃建筑设备公司 | The device and its control method that are used for cooling and heating urea solution for building machinery |
| CN107849959B (en) * | 2015-07-29 | 2020-05-26 | 沃尔沃建筑设备公司 | Device for cooling and heating urea solution for construction machine and control method thereof |
| CN105156182A (en) * | 2015-09-17 | 2015-12-16 | 苏州亿利亚科汽车系统有限公司 | Selective catalytic reduction (SCR) injection system and method |
| TWI655361B (en) * | 2016-11-10 | 2019-04-01 | 日商豐田自動車股份有限公司 | Exhaust control device for internal combustion engine and control method for exhaust control device |
| CN113606017A (en) * | 2021-06-30 | 2021-11-05 | 徐工集团工程机械股份有限公司科技分公司 | Loader and delayed power-off control device and control method thereof |
| CN114483267A (en) * | 2022-02-23 | 2022-05-13 | 一汽解放汽车有限公司 | Supply device and control method for SCR (selective catalytic reduction) dual-injection urea for vehicle |
| CN114483267B (en) * | 2022-02-23 | 2023-03-10 | 一汽解放汽车有限公司 | Supply device and control method for SCR (selective catalytic reduction) dual-injection urea for vehicle |
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Application publication date: 20110216 |