CN104110293A - Marine diesel engine SCR common rail type urea solution spraying system - Google Patents
Marine diesel engine SCR common rail type urea solution spraying system Download PDFInfo
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- CN104110293A CN104110293A CN201410252649.2A CN201410252649A CN104110293A CN 104110293 A CN104110293 A CN 104110293A CN 201410252649 A CN201410252649 A CN 201410252649A CN 104110293 A CN104110293 A CN 104110293A
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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
Abstract
The invention discloses a marine diesel engine SCR common rail type urea solution spraying system which comprises a compression air source, a urea solution daily tank, a controller, a metering electromagnetic valve and spraying guns. A pressurizing port of the urea solution daily tank is connected with the compression air source, an output port of the urea solution daily tank is connected with liquid inlets of the spraying guns through the metering electromagnetic valve, gas inlets of the spraying guns are connected with the compression air source, the controller controls the duty ratio of the metering electromagnetic valve to control the volume of the atomized urea solution sprayed by the spraying guns, a liquid level sensor is arranged in the urea solution daily tank, the controller controls a urea solution source to add a urea solution to the urea solution daily tank according to the liquid level information transmitted by the liquid level sensor, and the spraying guns are all located at the front end of an SCR catalyst in an engine exhaust pipe. The marine diesel engine SCR common rail type urea solution spraying system is capable of simultaneously supplying the urea solution to multiple marine diesel engines in real time, high in applicability and obvious in cost saving.
Description
Technical field
The present invention relates to marine diesel engine exhaust after treatment system field, refer to that particularly a kind of ship machine SCR joint-track type adds blue ejecting system.
Background technique
Diesel engine is widely used in boats and ships with its superior Economy, power character and reliability.According to Lloyds Classification society, add up, by the end of in January, 2011, the boats and ships sum of world fleet has reached more than 100,000, along with the high speed development of world shipping industry, demand to boats and ships constantly increases, and the pollutant emission of boat diesel engine has caused people's extensive concern.
In view of the harm that NOX causes environment and human health, International Maritime Organization has been formulated < < MARPOL73/78 pact > > supplemental provisions VI and has been limited.In the face of phase III (the Tier III standard) Abgasgesetz that is about to implement, Urea-SCR technology is known as the most effective ship machine emission control scheme both at home and abroad.
Boats and ships SCR system is generally used the aqueous solution of urea (hereinafter to be referred as adding indigo plant) of 40% mass concentration as reducing agent, and this is mainly because the demand of reducing agent is larger, needs the aqueous solution of urea that working concentration is higher, to reduce to add the volume of blue daily tank.In actual applications, conventionally aboard ship arrange and add blue cabin and add indigo plant for storing, and regularly pump into and add blue daily tank for normal injection.Add and add indigo plant while using up in blue daily tank, the work that need to stop adding blue jet pump is annotated again, and in Zhe Huidui emission control district (ECA), the boats and ships of navigation impact.
On the one hand, the type of boat diesel engine is different, and it arranges warm scope, former machine emission level, the exhaust banks difference to some extent of grading all; On the other hand, boats and ships Abgasgesetz has been made regulation for the applicable test cycle of the boat diesel engine of different purposes and service performance and weighted factor.Therefore, when the different purposes on boats and ships and the boat diesel engine of service performance need to introduce SCR system simultaneously, many covers must be installed and add blue injection apparatus to meet different emitted dose requirements, and this can increase extra manufacture, installation and operation cost undoubtedly.
Summary of the invention
The object of the invention is the deficiency existing in order to solve above-mentioned background technology, propose a kind ofly can annotate in real time, for many boat diesel engines, supply with and add blue ship machine SCR joint-track type and add blue ejecting system simultaneously.
For achieving the above object, the designed ship machine SCR joint-track type of the present invention adds blue ejecting system, comprise source of compressed air, add blue daily tank, controller, metering solenoid valve and spray gun, the described pressurization mouth that adds blue daily tank is connected with source of compressed air, the described delivery outlet that adds blue daily tank is connected with the liquid inlet of spray gun by metering solenoid valve, the gas access of described spray gun is connected with source of compressed air, described controller adds blue capacity by controlling the atomization of the Duty ratio control spray gun ejection of metering solenoid valve, its special way is, described adding in blue daily tank arranges liquid level sensor, the liquid level information that described controller transmits according to liquid level sensor is controlled and is added Lan Yuanxiang and add filling in blue daily tank and add indigo plant, described spray gun is several, all be positioned at the front end of engine exhaust pipe SCR catalyst converter.
Further, described in add Lan Yuanyou Tian Lan cabin and provide, add bluely from adding the liquid outlet in blue cabin, by centrifugal pump and filling solenoid valve, entering the filler that adds blue daily tank successively, described controller is controlled the open and close of centrifugal pump and filling solenoid valve.Controller is opened after centrifugal pump and filling solenoid valve, and centrifugal pump is bluely entered and added blue daily tank by the filling solenoid valve of opening from adding pump in blue cabin adding.
Further, between the described delivery outlet that adds blue daily tank and metering solenoid valve, be provided with purging pipeline, an entrance of described purging pipeline is connected with the delivery outlet that adds blue daily tank by output solenoid valve, another entrance is connected with source of compressed air by purge solenoid valve, the outlet of described purging pipeline is connected with metering solenoid valve, and described controller is controlled the open and close of output solenoid valve and purge solenoid valve.By purge passage and purge solenoid valve are set, can by pressurized air by add in blue injection line and spray gun remaining add blue emptying, the working life of extension device.
Further, described source of compressed air is compressed air bottle, the outlet port of compressed air bottle arranges pressurized air stop valve, described source of compressed air is divided into three tunnels after by pressurized air stop valve, first reduction valve of leading up to is connected with pressurization mouthful, second reduction valve of leading up to is connected with the gas access of nozzle with pressurized air safety check, and another road is connected with purge solenoid valve.Source of compressed air is divided into three tunnels and supplies with respectively and add blue daily tank, nozzle and purge passage.
Further, add blue daily tank inside be provided with add that blue heating pipe line is connected add blue heating pipe line and temperature transducer, the described water intake that adds blue heating pipe line is provided with coolant control valve, and the temperature signal that described controller transmits according to temperature transducer is controlled the open and close of coolant control valve.Engine coolant is flowed through and is added blue heating pipe line and heat adding indigo plant, thereby can effectively prevent from adding blue freezing.
Further, described in add blue daily tank side be provided with bleed valve, bottom is provided with residul discharging valve, described in add blue daily tank delivery outlet by filter, be connected with metering solenoid valve.Bleed valve by pressure decreased to barometric pressure adding in blue daily tank, is discharged by residul discharging valve the residue adding in blue daily tank when system is not worked.
Further, between described filling solenoid valve and centrifugal pump, be provided with back liquid pipeline, the entrance of described back liquid pipeline by electromagnetic relief valve be connected with centrifugal pump with filling solenoid valve, outlet is connected with the described blue cabin of adding of the blue cabin liquid return hole that adds, the open and close of described controller control electromagnetic relief valve.When adding blue liquid level higher than setting value, centrifugal pump and filling solenoid valve are closed simultaneously, and now electromagnetic relief valve is opened, in charging line remaining add blue through electromagnetic relief valve with add blue cabin liquid return hole and be recycled to and add blue cabin.
Further, between described filling solenoid valve and filler, be provided with and add blue safety check.Add blue safety check and make to add blue unidirectional entering and add blue daily tank, stop and add blue reverse returning.
Further, described spray gun and metering solenoid valve are two, and described two spray guns lay respectively in two engine exhaust pipe.Same set of add blue injection apparatus can meet two motors different add blue emitted dose requirement.
Further, described spray gun is three, is positioned at same engine exhaust pipe, along engine exhaust inner tube wall circumferencial direction, is evenly arranged.The mode that adopts a plurality of spray guns to be evenly arranged along engine exhaust inner tube wall circumferencial direction, can reduce to add the diameter of blue drop, the total surface area that blue drop is added in increase, can make the spray shapes of described spray gun ejection, the grain size in spraying space and distribution reach best, thereby be conducive to add the evaporation of blue drop and be uniformly distributed.
Compared with prior art, the present invention has set up and a kind ofly can annotate in real time, supply with and add blue ship machine SCR joint-track type and add blue ejecting system simultaneously for many boat diesel engines.This system is added indigo plant while using up what add blue daily tank, and the work that does not need to stop to add blue injection apparatus can complete adding blue daily tank filling, thereby guarantees boats and ships stable navigation in emission control district.In addition, by pressurized air, provide power, add blue daily tank and can be used as low pressure common rail system system and add indigo plant for a plurality of nozzles provide, to adapt to wider range of flow.Adopt a plurality of add blue metering valve in parallel, adjust frequency and the spray regime of dutycycle respectively, the present invention can realize simultaneously and supply with and add blue function for many boat diesel engines, applicability is strong and significantly cost-saving.
Accompanying drawing explanation
Fig. 1 is the first embodiment's of the present invention structural representation, wherein: and → Wei Ye road,
for gas circuit,
for signal road.
Fig. 2 is the second embodiment's of the present invention structural representation, wherein: and → Wei Ye road,
for gas circuit,
for signal road.
In figure: 1. source of compressed air, 2. pressurized air stop valve, 3. controller, filling solenoid valve, 5. electromagnetic relief valve, 6. centrifugal pump, 7. liquid outlet, 8. add blue cabin filler, 9. add blue cabin liquid return hole, 10. add blue cabin, 11. bleed valves, 12. add blue safety check, 13. fillers, 14. coolant control valves, 15. temperature transducers, 16. liquid level sensors, 17. pressurizations mouthful, 18. first reduction valve, 19. add blue heating pipe line, 20. residul discharging valves, 21. add blue daily tank, 22. filters, 23. add blue stop valve, 24. output solenoid valves, 25. metering solenoid valves, 26. purge solenoid valves, 27. second reduction valve, 28. pressurized air safety check, 29. gas accesses, 30. liquid inlets, 31. spray guns, 32. engine exhaust pipe, 33.SCR catalyst converter, 34. purge pipeline, 35. back liquid pipelines.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Ship machine SCR joint-track type of the present invention adds blue ejecting system, comprises source of compressed air 1, adds blue daily tank 21, controller 3, metering solenoid valve 25, spray gun 31, centrifugal pump 6 and adds blue cabin 10.The pressurization mouth 17 that adds blue daily tank 21 is connected with source of compressed air 1, the delivery outlet that adds blue daily tank 21 successively by filter 22, add blue stop valve 23, output solenoid valve 24 is connected with metering solenoid valve 25.Metering solenoid valve 25 is connected with the liquid inlet 30 of spray gun 31, and the gas access 29 of spray gun 31 is connected with source of compressed air 1.Spray gun 31 is two-stage gas-liquid mixed, and its top offers 29He liquid inlet, gas access 30, and is arranged on the center line of engine exhaust pipe 32 of SCR catalyst converter 33 front ends.Spray gun 31 is several, is all positioned at the front end of engine exhaust pipe 32 SCR catalyst converters 33.The liquid level information that controller 3 transmits according to liquid level sensor 16 is controlled centrifugal pump 6 and to adding filling blue daily tank 21, is added indigo plant from adding blue cabin 10,
The quantity of spray gun 31 can be adjusted according to different traffic requirements, and a plurality of spray gun 31 adopts the mode being evenly arranged along engine exhaust pipe 32 inwall circumferencial directions.Metering solenoid valve 25 is not limited to one, can adopt mode in parallel to form several and add blue injection line, and adjust frequency respectively and dutycycle by controller 3, thereby realize simultaneously, for many boat diesel engines, supplies with and adds blue function.
The side of adding blue daily tank 21 is provided with bleed valve 11, and bottom is provided with residul discharging valve 20, adds blue daily tank 21 inside and is provided with the blue heating pipe line 19 that adds being connected with engine cooling liquid pipeline, and the water intake that adds blue heating pipe line 19 is provided with coolant control valve 14.Add in blue daily tank 21 and be provided with temperature transducer 15 and liquid level sensor 16, temperature transducer 15 and liquid level sensor 16 are transferred to controller 3 by temperature signal, liquid level signal respectively.
Add between the delivery outlet of blue daily tank 21 and metering solenoid valve 25 and be provided with and purge pipeline 34, an entrance that purges pipeline 34 is connected with the delivery outlet that adds blue daily tank 21 by output solenoid valve 24, another entrance is connected with source of compressed air 1 by purge solenoid valve 26, and the outlet that purges pipeline 34 is connected with metering solenoid valve 25.
The liquid outlet 7 that adds blue cabin 10 successively by centrifugal pump 6, filling solenoid valve 4, add blue safety check 12 and be connected with the filler 13 that adds blue daily tank 21.The size of the lift of centrifugal pump 6 depends on the pressure adding in blue daily tank 21, guarantees when ejecting system is worked, and adds in the situation that has pressure in blue daily tank 21 and can pump into adding indigo plant, thereby realized the function of real-time filling.
Between filling solenoid valve 4 and centrifugal pump 6, be provided with back liquid pipeline 35, the entrance of back liquid pipeline 35 is connected, exports and adds the adding of blue cabin 10 blue cabin liquid return hole 9 with filling solenoid valve 4 with centrifugal pump 6 by electromagnetic relief valve 5 and is connected.
Source of compressed air 1 is compressed air bottle, the outlet port of compressed air bottle arranges pressurized air stop valve 2, source of compressed air 1 is divided into three tunnels after by pressurized air stop valve 2, first reduction valve 18 of leading up to is connected with pressurization mouth 17, second reduction valve 27 of leading up to is connected with the gas access 29 of nozzle 31 with pressurized air safety check 28, and another road is connected with purge solenoid valve 26.
Controller 3 receives temperature signal and the liquid level signal of temperature transducer 15 and liquid level sensor 16, and controls the open and close of centrifugal pump 6, filling solenoid valve 4, electromagnetic relief valve 5, coolant control valve 14, output solenoid valve 24, purge solenoid valve 26 and metering solenoid valve 25.
The working procedure that ship machine SCR joint-track type of the present invention adds blue ejecting system is as follows:
Add the generation and control of blue pressure: add blue daily tank 21 and be communicated with source of compressed air 1 by pressurization mouthful 17 and first reduction valve 18, utilize compressed-air actuated exert pressure, the pressure that makes to add in blue daily tank 21 keeps stable.The aperture of the first reduction valve 18 can require to adjust according to different emitted doses, to be applicable to wider range of flow.
Add blue injection: controller 3 is according to the work information of motor, calculate current working required add blue emitted dose, by adjusting electric current, control different frequency and the dutycycles of metering solenoid valve 25, the Lan Jing liquid inlet 30 of adding after quantitatively filter 22 being filtered sprays into spray gun 31; Meanwhile, pressurized air enters spray gun 31 through the second reduction valve 27, pressurized air safety check 28 and gas access 29; Add indigo plant and pressurized air, in spray gun 31, double atomization occurs, spray in engine exhaust pipe 32.
Add blue heating: the temperature signal that controller 3 sends according to temperature transducer 15, the keying of control engine coolant control valve 14; When adding blue temperature when too low, engine cooling hydraulic control valve 14 is opened, and cooling liquid is flowed through and added blue heating pipe line 19 and add indigo plant and carry out heat exchange, thereby has effectively prevented from adding blue crystallization.
Add blue filling: the liquid level signal that controller 3 receiving liquid level sensors 16 send, control the keying of centrifugal pump 6 and filling solenoid valve; When adding blue liquid level lower than setting value, centrifugal pump 6 and filling solenoid valve 4 are opened simultaneously, add blue through liquid outlet 7, centrifugal pump 6, the solenoid valve 4 of annotating, add blue safety check 12 and filler 13 and enter and add blue daily tank 21; When adding blue liquid level higher than setting value, centrifugal pump 6 and filling solenoid valve 4 are closed simultaneously, and now electromagnetic relief valve 5 is opened, in charging line remaining add blue through electromagnetic relief valve 5 with add blue cabin liquid return hole 9 and be recycled to and add blue cabin 10.Adding blue cabin 10 needs the regular blue cabin of adding of the top filler 8 that passes through to add blue supplementing.
Purge: under normal operative condition, output solenoid valve 24 is opened, and purge solenoid valve 26 is closed; Before adding blue injection and after spraying, output solenoid valve 24 is closed, and purge solenoid valve 26 is opened, the pressurized air that source of compressed air 1 provides by add in blue injection line and spray gun remaining add blue emptying; Through emptying completing after the time of setting, output solenoid valve 24 and purge solenoid valve 26 return to original state to prevent pressurized air consumption.
Shut down: after engine shutdown, pressurized air stop valve 2 and add blue stop valve 23 and close simultaneously, thus save compressed-air actuated consumption and prevent the leakage of blue tube road because pressurizeing and cause for a long time.
As shown in Figure 1, spray gun 31 and metering solenoid valve 25 are two to first embodiment of the present invention, and two spray guns 31 lay respectively in two engine exhaust pipe 32.Add and blue through filter 22, after adding blue stop valve 23 and output solenoid valve 24, be divided into two-way, a metering solenoid valve 25 was set respectively before the liquid inlet 30 with spray gun 31 is connected; On the other hand, from source of compressed air 1 pressurized air out, through pressurized air stop valve 2, the second reduction valve 27 and pressurized air safety check 28, be divided into equally two-way, be connected with the gas access 29 of two spray guns 31 respectively; Two spray guns are arranged on different engine exhaust pipe 32, and its gas, flow quantity can be adjusted by metering solenoid valve 25 separately.
Controller 3 calculates respectively the required blue emitted dose of adding according to the work information of two motors, by adjusting electric current, controls different frequency and the dutycycles of metering solenoid valve 25, will add quantitatively indigo plant and spray into spray gun 31.
Adding the pressure of blue daily tank 21 can adjust by the first reduction valve 18, to adapt to wider range of flow; Add blue daily tank 21 and there is good pressure surge equilibrium function, can effectively prevent the pressure surge causing because respectively adding the flow difference of blue injection line.
In embodiment 1, supply with simultaneously and add blue motor quantity and be not limited to two, can in the range of capacity of adding blue daily tank 21, arbitrarily adjust.
As shown in Figure 2, spray gun 31 is three to second embodiment of the present invention, is positioned at same engine exhaust pipe 32, along engine exhaust pipe 32 inwall circumferencial directions, is evenly arranged.Add and blue through filter 22, after adding blue stop valve 23 and output solenoid valve 24 and metering solenoid valve 25, be divided into three tunnels, be connected with the liquid inlet 30 of three spray guns 31 respectively; Meanwhile, from source of compressed air 1 pressurized air out, through pressurized air stop valve 2, the second reduction valve 27 and pressurized air safety check 28, be divided into equally three tunnels, be connected with the gas access 29 of three spray guns 31 respectively; Because gas, the flow quantity of three spray guns are consistent, therefore three spray guns 31 are evenly arranged along engine exhaust pipe 32 inwall circumferencial directions.
Adding blue case 21 can be directly as a low pressure common rail system system, and its larger volume itself has good pressure surge equilibrium function, can provide to a plurality of spray guns according to different Environmental Conditions and add indigo plant.Spray gun 31 shown in Fig. 1 is not limited to three, can be any number of.
As shown in Figure 2, the mode that adopts a plurality of spray guns 31 to be evenly arranged along engine exhaust pipe 32 inwall circumferencial directions, can reduce to add the diameter of blue drop, the total surface area that blue drop is added in increase, can make the spray shapes of spray gun 31 ejections, the grain size in spraying space and distribution reach best, thereby be conducive to add the evaporation of blue drop and be uniformly distributed.
The content not being described in detail in this specification belongs to the known technology of professional and technical personnel in the field.
Claims (10)
1. ship machine SCR joint-track type adds blue ejecting system, comprise source of compressed air (1), add blue daily tank (21), controller (3), metering solenoid valve (25) and spray gun (31), the described pressurization mouth (17) that adds blue daily tank (21) is connected with source of compressed air (1), the described delivery outlet that adds blue daily tank (21) is connected with the liquid inlet (30) of spray gun (31) by metering solenoid valve (25), the gas access (29) of described spray gun (31) is connected with source of compressed air (1), described controller (3) adds blue capacity by controlling the atomization of Duty ratio control spray gun (31) ejection of metering solenoid valve (25), it is characterized in that: described in add liquid level sensor (16) be set in blue daily tank (21), the liquid level information that described controller (3) transmits according to liquid level sensor (16) is controlled and is added Lan Yuanxiang and add filling in blue daily tank (21) and add indigo plant, described spray gun (31) is several, all be positioned at the front end of engine exhaust pipe (32) SCR catalyst converter (33).
2. ship machine SCR joint-track type according to claim 1 adds blue ejecting system, it is characterized in that: described in add Lan Yuanyou Tian Lan cabin (10) and provide, add indigo plant and by centrifugal pump (6) and filling solenoid valve (4), enter the filler (13) that adds blue daily tank (21) successively from adding the liquid outlet (7) of blue cabin (10), described controller (3) is controlled the open and close of centrifugal pump (6) and filling solenoid valve (4).
3. ship machine SCR joint-track type according to claim 2 adds blue ejecting system, it is characterized in that: described in add between the delivery outlet of blue daily tank (21) and metering solenoid valve (25) and be provided with and purge pipeline (34), an entrance of described purging pipeline (34) is connected with the delivery outlet that adds blue daily tank (21) by output solenoid valve (24), another entrance is connected with source of compressed air (1) by purge solenoid valve (26), the outlet of described purging pipeline (34) is connected with metering solenoid valve (25), described controller (3) is controlled the open and close of output solenoid valve (24) and purge solenoid valve (26).
4. ship machine SCR joint-track type according to claim 3 adds blue ejecting system, it is characterized in that: described source of compressed air (1) is compressed air bottle, the outlet port of compressed air bottle arranges pressurized air stop valve (2), described source of compressed air (1) is divided into three tunnels after by pressurized air stop valve (2), the first reduction valve (18) of leading up to is connected with pressurization mouthful (17), the second reduction valve (27) of leading up to is connected with the gas access (29) of nozzle (31) with pressurized air safety check (28), and another road is connected with purge solenoid valve (26).
5. ship machine SCR joint-track type according to claim 4 adds blue ejecting system, it is characterized in that: described in add blue daily tank (21) inside be provided with add that blue heating pipe line is connected add blue heating pipe line (19) and temperature transducer (15), the described water intake that adds blue heating pipe line (19) is provided with coolant control valve (14), and the temperature signal that described controller (3) transmits according to temperature transducer (15) is controlled the open and close of coolant control valve (14).
6. ship machine SCR joint-track type according to claim 4 adds blue ejecting system, it is characterized in that: described in add blue daily tank (21) side be provided with bleed valve (11), bottom is provided with residul discharging valve (20), described in add blue daily tank (21) delivery outlet by filter (22), be connected with metering solenoid valve (25).
7. ship machine SCR joint-track type according to claim 4 adds blue ejecting system, it is characterized in that: between described filling solenoid valve (4) and centrifugal pump (6), be provided with back liquid pipeline (35), the entrance of described back liquid pipeline (35) by electromagnetic relief valve (5) be connected with centrifugal pump (6) with filling solenoid valve (4), export with described in add blue cabin (10) the blue cabin liquid return hole (9) that adds be connected, the open and close of described controller (3) control electromagnetic relief valve (5).
8. ship machine SCR joint-track type according to claim 7 adds blue ejecting system, it is characterized in that: between described filling solenoid valve (4) and filler (13), be provided with and add blue safety check (12).
9. ship machine SCR joint-track type according to claim 8 adds blue ejecting system, it is characterized in that: described spray gun (31) and metering solenoid valve (25) are two, and described two spray guns (31) lay respectively in two engine exhaust pipe (32).
10. ship machine SCR joint-track type according to claim 8 adds blue ejecting system, it is characterized in that: described spray gun (31) is three, be positioned at same engine exhaust pipe (32), along engine exhaust pipe (32) inwall circumferencial direction, be evenly arranged.
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| CN201410252649.2A CN104110293A (en) | 2014-06-09 | 2014-06-09 | Marine diesel engine SCR common rail type urea solution spraying system |
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| CN201410252649.2A CN104110293A (en) | 2014-06-09 | 2014-06-09 | Marine diesel engine SCR common rail type urea solution spraying system |
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| WO2016078540A1 (en) * | 2014-11-21 | 2016-05-26 | 天纳克（苏州）排放系统有限公司 | Common rail, application of the common rail, carbamide spraying system, and control method therefor |
| WO2016095808A1 (en) * | 2014-12-16 | 2016-06-23 | 天纳克（苏州）排放系统有限公司 | Urea injection system |
| CN106555643A (en) * | 2015-09-28 | 2017-04-05 | 中国船舶重工集团公司第七研究院 | Ship machine SCR multichannel jet control systems |
| CN106567762A (en) * | 2016-10-21 | 2017-04-19 | 潍柴动力空气净化科技有限公司 | Control method for reducing crystallization risk of SCR urea injection system |
| CN108661760A (en) * | 2018-05-07 | 2018-10-16 | 广东绿谷净化设备有限公司 | A kind of central control device and method of more SCR systems |
| US10180096B2 (en) | 2014-06-11 | 2019-01-15 | Tenneco Automotive Operating Company Inc. | Fluid delivery system with line pressure control valve |
| US10202883B2 (en) | 2014-11-21 | 2019-02-12 | Tenneco (Suzhou) Emission System Co., Ltd. | Common rail assembly, urea injection system and application thereof |
| CN109798166A (en) * | 2017-11-17 | 2019-05-24 | 罗伯特·博世有限公司 | It runs the method for reagent quantitative system and executes the equipment of this method, circuit network |
| CN112761761A (en) * | 2021-01-22 | 2021-05-07 | 中国船舶重工集团公司第七一一研究所 | Reactor, flue gas treatment system and control method |
| CN115095413A (en) * | 2022-06-10 | 2022-09-23 | 东风柳州汽车有限公司 | Vehicle-mounted urea filling system, vehicle urea filling method and vehicle |
| US11525380B2 (en) | 2019-01-11 | 2022-12-13 | Cummins Emission Solutions Inc. | Aftertreatment system with multiple dosing modules |
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