CN201878534U - Urea one-way valve control water heating selective catalytic reduction (SCR) urea system with double urea boxes - Google Patents
Urea one-way valve control water heating selective catalytic reduction (SCR) urea system with double urea boxes Download PDFInfo
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- CN201878534U CN201878534U CN2010205689910U CN201020568991U CN201878534U CN 201878534 U CN201878534 U CN 201878534U CN 2010205689910 U CN2010205689910 U CN 2010205689910U CN 201020568991 U CN201020568991 U CN 201020568991U CN 201878534 U CN201878534 U CN 201878534U
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- urea
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- gas control
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Abstract
The utility model relates to a urea one-way valve control water heating selective catalytic reduction (SCR) urea system with double urea boxes, which is characterized in that the volume of an auxiliary urea tank is between 30L and 40L, an urea liquid filling opening, a temperature and liquid level sensor and a heating pipeline are arranged on the auxiliary urea tank, a main urea tank is a pressure container tank, a compressed gas inlet passage, a compressed gas outlet control valve B, a pressure sensor and a heating pipeline are arranged on the main urea tank, a compressed gas control valve A, a compressed gas control valve B and a compressed gas control valve C are arranged in a compressed air pipeline arranged between an automobile gas storage tube and the main urea tank, a urea liquid filter is arranged in an urea liquid supplying pipeline arranged between the main urea tank and an urea liquid injector, and an electronic control unit (ECU) controls the urea liquid injector and the three electromagnetic valves: the compressed gas control valve A, the compressed gas control valve B and the compressed gas control valve C through signals. The gas consumption is low, the system cost can be reduced, the monopolizing situation of the field by international suppliers is broken through, and the independent development advantages are sufficiently realized.
Description
Technical field
The utility model relates to a kind of pair of urea box urea check valve control water heating SCR urea system, particularly relates to the two urea box urea check valve control of a kind of pneumatic type water heating SCR urea supply and spraying system.
Background technology
Ripe at present urea liquid is supplied with and spraying 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 is to provide a kind of pair of urea box urea check valve control water heating SCR urea system, and 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.
The technical solution of the utility model is achieved in that a kind of pair of urea box urea check valve control water heating SCR urea system, by urea liquid filler, auxilliary 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 ECU control signal is divided into the signal I, signal II and signal III, the urea-spray device, urea-spray device cooling line, main urea box, the urea check valve, Compressed Gas control valve A, Compressed Gas control valve B and Compressed Gas control valve C, gas piping a, gas piping b and gas piping c, the urea box heat control valve, the urea woven hose, urea liquid cleaner is formed; It is characterized in that: auxilliary urea tank volume is 30L～40L, arranges urea liquid filler above, temperature and liquid level sensor, heating pipe line; Main urea box is a pressure volume pot, and main urea tank is provided with Compressed Gas inlet channel and venting Compressed Gas control valve B, pressure sensor, heating pipe line; Compressed Gas control valve A, Compressed Gas control valve B and Compressed Gas control valve C are located in the compressed air line between automobile gas receiver and the main urea box; Urea liquid cleaner is located in the urea liquid feeding pipe between main urea box and the urea fluid injector; ECU signal controlling Compressed Gas control valve A, Compressed Gas control valve B and three magnetic valves of Compressed Gas control valve C and urea fluid injector.
Whether described ECU control signal is controlled main and auxiliary 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.
Good effect of the present utility model 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 utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described: two as shown in Figure 1 urea box urea check valve control water heating SCR urea systems, by urea liquid filler 1, auxilliary 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, the ECU control signal is divided into signal I 8, signal II 9 and signal III 11, urea-spray device 12, urea-spray device cooling line 13, main urea box 14, urea check valve 15, Compressed Gas control valve A16, Compressed Gas control valve B22 and Compressed Gas control valve C23, gas piping a17, gas piping b24 and gas piping c21, urea box heat control valve 18, urea woven hose 19, urea liquid cleaner 20 is formed; It is characterized in that: auxilliary urea tank volume is 30L～40L, arranges urea liquid filler 1 above, temperature and liquid level sensor 4, heating pipe line 3; Main urea box is a pressure volume pot, and main urea tank is provided with Compressed Gas inlet channel and venting Compressed Gas control valve B22, pressure sensor, heating pipe line; Compressed Gas control valve A16, Compressed Gas control valve B22 and Compressed Gas control valve C23 are located in the compressed air line 17 between automobile gas receiver and the main urea box; Urea liquid cleaner 20 is located in the urea liquid feeding pipe 19 between main urea box and the urea fluid injector 12; ECU signal controlling Compressed Gas control valve A16, Compressed Gas control valve B22 and three magnetic valves of Compressed Gas control valve C23 and urea fluid injector 12.
Whether described ECU control signal is controlled main and auxiliary 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.
The ECU control signal can determine whether needs add urea liquid to main urea box according to nominal data, in the time of need adding urea liquid, Compressed Gas control valve B22 opens, Compressed Gas control valve A16 and Compressed Gas control valve C23 close, main urea box internal pressure is reduced to atmospheric pressure, auxilliary urea box is than main urea box position height, the urea of such two urea boxes has pressure differential, urea check valve 15 is opened under the urea action of pressure, urea liquid enters into main urea box 14 from auxilliary urea box 2, judge the opening time of Compressed Gas control valve B22 according to main urea box internal pressure; ECU controls the switch of Compressed Gas control valve A16, Compressed Gas control valve B22 and Compressed Gas control valve C23 according to the information of demarcation and various inputs.
ECU controls the duty of urea-spray device according to SCR inlet temperature, urea the temperature inside the box, environmental temperature, the urea box liquid level information of input.
ECU 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 main urea box is according to the pressure of input deliver a letter breath and closes compression gas control valve B22 and Compressed Gas control valve C23 by ECU, open urea-spray device 12, urea liquid arrives urea-spray device place by urea liquid cleaner 20 backs under the gas pressure effect like this, and the requirement of demarcating according to engine emission sprays in the blast pipe effect of realization reduction NOx by the urea fluid injector.
When the environment minimum temperature is lower than-11 ° of C car load powered-downs, under the control of ECU, closes compression gas control valve A16 and Compressed Gas control valve C23, open Compressed Gas control valve B22 and discharge gas in the main urea box, closes compression gas control valve B22 then, then open Compressed Gas control valve C23, the urea liquid in the unlatching emptying urea system of control urea-spray device, closes compression gas control valve C23 then.
Claims (1)
1. two urea box urea check valve control water heating SCR urea systems are by urea liquid filler, auxilliary urea box, the water heating pipe line, urea liquid temp and liquid level signal, the atmospheric temperature signal, SCR inlet temperature signal, NOx signal 7, the ECU control signal is divided into the signal I, signal II and signal III, the urea-spray device, urea-spray device cooling line, main urea box, the urea check valve, Compressed Gas control valve A, Compressed Gas control valve B and Compressed Gas control valve C, gas piping a, gas piping b and gas piping c, the urea box heat control valve, the urea woven hose, urea liquid cleaner is formed; It is characterized in that: auxilliary urea tank volume is 30L～40L, arranges urea liquid filler above, temperature and liquid level sensor, heating pipe line; Main urea box is a pressure volume pot, and main urea tank is provided with Compressed Gas inlet channel and venting Compressed Gas control valve B, pressure sensor, heating pipe line; Compressed Gas control valve A, Compressed Gas control valve B and Compressed Gas control valve C are located in the compressed air line between automobile gas receiver and the main urea box; Urea liquid cleaner is located in the urea liquid feeding pipe between main urea box and the urea fluid injector; ECU signal controlling Compressed Gas control valve A, Compressed Gas control valve B and three magnetic valves of Compressed Gas control valve C and urea fluid injector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205689910U CN201878534U (en) | 2010-10-20 | 2010-10-20 | Urea one-way valve control water heating selective catalytic reduction (SCR) urea system with double urea boxes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205689910U CN201878534U (en) | 2010-10-20 | 2010-10-20 | Urea one-way valve control water heating selective catalytic reduction (SCR) urea system with double urea boxes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201878534U true CN201878534U (en) | 2011-06-29 |
Family
ID=44176046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205689910U Expired - Fee Related CN201878534U (en) | 2010-10-20 | 2010-10-20 | Urea one-way valve control water heating selective catalytic reduction (SCR) urea system with double urea boxes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201878534U (en) |
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2010
- 2010-10-20 CN CN2010205689910U patent/CN201878534U/en not_active Expired - Fee Related
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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: 20110629 Termination date: 20191020 |