CN109236428A - gear type urea pump system and working method - Google Patents
gear type urea pump system and working method Download PDFInfo
- Publication number
- CN109236428A CN109236428A CN201811336692.1A CN201811336692A CN109236428A CN 109236428 A CN109236428 A CN 109236428A CN 201811336692 A CN201811336692 A CN 201811336692A CN 109236428 A CN109236428 A CN 109236428A
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- Prior art keywords
- urea
- gear
- pump
- master control
- control borad
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
- F01N3/208—Control of selective catalytic reduction [SCR], e.g. dosing of reducing agent
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/24—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C2/18—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
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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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Exhaust Gas After Treatment (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The present invention relates to a kind of gear type urea pump system and working method, this gear type urea pump system includes: master control borad, and the gear pump being electrical connected with the master control borad；Wherein when a vehicle is started, the master control borad is suitable for controlling the urea liquid in the gear pump extracted urea case to purify to vehicle exhaust；And when vehicle stall, the master control borad, which is further adapted for controlling the gear pump, draws back the urea liquid in vehicle exhaust portion in the urea box；The present invention can satisfy six exhaust method of state control in SCR system to urea pump high-precision, low latency, the demand of high performance-price ratio, and it realizes that gear rotates forward to build to press to spray to rotate backward with gear and takes out operation, mechanical structure is simple, reduces components cumulative failure probability.
Description
Technical field
The present invention relates to a kind of automobile environment-protection field more particularly to a kind of gear type urea pump systems and working method.
Background technique
In recent years, six standard of state that exhaust gas from diesel vehicle discharge standard in China's will come into effect in 2019, new standard pair
The discharge of nitrogen oxides (NOx), which has, in exhaust gas from diesel vehicle is more strict with.To meet associated emissions technical regulation, apply
In the SCR technology that diesel engine vent gas purifies, to urea supply pump, more stringent requirements are proposed.
The existing SCR system urea pump in domestic market is mostly diaphragm pump or plunger pump, and the pump of both forms is at work
It requiring to work by check valve, needs to carry out by mechanisms such as reversal valves when falling and taking out realizing, pump body structure is complicated, and zero
Component cumulative failure probability is high；The SCR system urea pump that domestic vendors are developed is mostly that gas helps formula urea pump, and precision is general
It is not high, and be easy to be influenced by height above sea level difference；Existing country's gas helps formula urea pump to spray low-response, it is difficult to meet six emission regulation pair of state
Post-process the requirement of real-time.
Therefore, need to develop a kind of gear type urea pump system and working method, to solve the above problems.
Summary of the invention
The object of the present invention is to provide a kind of gear type urea pump system and working methods.
In order to solve the above-mentioned technical problems, the present invention provides a kind of gear type urea pump systems comprising: master control borad,
And the gear pump being electrical connected with the master control borad；Wherein when a vehicle is started, the master control borad is suitable for controlling the gear
Pumping takes the urea liquid in urea box to purify to vehicle exhaust；And when vehicle stall, the master control borad is also suitable
The urea liquid in vehicle exhaust portion is drawn back in the urea box in controlling the gear pump.
Further, the gear pump and the urea box connection are provided with initial filter device, and the initial filter device is suitable for
Primary filter is carried out to urea liquid.
Further, the gear pump includes: gear pump housing, rotary electric machine, and is controlled and rotated by the rotary electric machine
Gear pair；The rotary electric machine is suitable for controlling the gear pair forward or reverse so as to form negative pressure in the gear pump housing
Or positive pressure, i.e., when forming negative pressure in the gear pump housing, the urea liquid in the gear pump extracted urea case is to vapour
Tail gas is purified；And when forming positive pressure in the gear pump housing, the gear pump is by the urea in vehicle exhaust portion
Solution is drawn back in the urea box.
Further, the gear pump includes: the driving circuit being electrical connected with the master control borad；The driving circuit it is defeated
Outlet is suitable for being connected with the rotary electric machine；The master control borad is suitable for controlling the output of the driving circuit, thus described in control
Rotary electric machine rotation.
Further, the gear pump housing includes: second level filter；The second level filter is suitable for in the tooth
The urea liquid flowed in wheel pump housing is filtered.
Further, the Perfected electromagnetic metering valve being electrical connected with the master control borad is provided in the gear pump housing；The electricity
Magnetic metering valve is suitable for for the fluid flow data in the gear pump housing being sent to the master control borad, and the master control borad is suitable for root
The output of the driving circuit is controlled according to the fluid flow data to adjust the revolving speed of the rotary electric machine.
Further, the master control borad includes: instruction acquisition module, processing module, and controlled by the processing module
PWM drive module；Wherein described instruction obtains module and is suitable for obtaining urea pump jeting instruction, and by the urea pump jeting instruction
It is sent to the processing module；And the processing module is suitable for controlling the PWM driving according to the urea pump jeting instruction
Module drive gear pump works.
Further, it includes: the CAN bus module being electrical connected with the processing module that described instruction, which obtains module,；It is described
CAN bus module is adapted to Car Electronic Control ECU system to obtain urea pump jeting instruction, and the CAN bus module is also
Vehicle post-processing ACU system is adapted to be acquired to obtain liquid level sensor in urea box, temperature sensor, quality sensor
Information, and the Car Electronic Control ECU system and the vehicle post-processing ACU system by the CAN bus module into
Row interaction.
On the other hand, the present invention provides a kind of working method of gear type urea pump system comprising: the gear type urine
The working method of plain pumping system is suitable for working using gear type urea pump system.
Further, the gear type urea pump system includes: master control borad, and the gear being electrical connected with the master control borad
Pump；Wherein when a vehicle is started, the master control borad is suitable for controlling the urea liquid in the gear pump extracted urea case to vapour
Tail gas is purified；And when vehicle stall, the master control borad is further adapted for controlling the gear pump for vehicle exhaust portion
Urea liquid is drawn back in the urea box.
The invention has the advantages that the present invention can be realized gear rotate forward build pressure injection and gear rotate backward down
Operation is taken out, mechanical structure is simple, reduces components cumulative failure probability, and meet six emission regulation of state to post-processing urea pump
The requirement for spraying real-time under the cooperation of Perfected electromagnetic metering valve, realizes full-liquid type urine by controlling pump pressure 7.5bar or more
The responsiveness of element injection, urea injecting quantity variation is fast, and substantially eliminates influence of the height above sea level difference to the amount of injection.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the functional block diagram of gear type urea pump system of the present invention；
Fig. 2 is the structure chart of gear type urea pump system of the present invention；
Fig. 3 is the functional block diagram of master control borad of the present invention；
Fig. 4 is the circuit diagram of processing module of the present invention；
Fig. 5 is the circuit diagram of CAN bus module of the present invention.
In figure: gear pump 1, gear pump housing 101, rotary electric machine 102, gear pair 103；
Urea box 2, vehicle exhaust portion 3, initial filter device 4.
Specific embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates basic structure of the invention, therefore it only shows the composition relevant to the invention.
Embodiment 1
Fig. 1 is the functional block diagram of gear type urea pump system of the present invention；
Fig. 2 is the structure chart of gear type urea pump system of the present invention.
In the present embodiment, as shown in Figure 1 and Figure 2, a kind of gear type urea pump system is present embodiments provided comprising:
Master control borad, and the gear pump 1 being electrical connected with the master control borad；Wherein when a vehicle is started, the master control borad is suitable for control
Urea liquid in the 1 extracted urea case 2 of gear pump is to purify vehicle exhaust；It is described and when vehicle stall
Master control borad, which is further adapted for controlling the gear pump 1, draws back the urea liquid in vehicle exhaust portion 3 in the urea box 2.
In the present embodiment, the urea liquid in 1 extracted urea case 2 of gear pump is controlled to vehicle exhaust by master control borad
It carries out purification or master control borad control gear pump 1 draws back the urea liquid in vehicle exhaust portion 3 in urea box 2, can be realized tooth
Wheel, which rotates forward to build to press to spray to rotate backward with gear, takes out operation, and mechanical structure is simple, reduces components cumulative failure probability.
In the present embodiment, the urea liquid in 1 extracted urea case 2 of gear pump connects urea spray by a urea pipe fitting
Pipe fitting is penetrated, and the urea tube tip side function of 7.89mm diameter is provided, facilitates the quick connection of urea pipe.
In order to carry out primary filter to urea liquid, the gear pump 1 is provided with initial filter with 2 connection of urea box
Device 4, the initial filter device 4 are suitable for carrying out primary filter to urea liquid.
In the present embodiment, the urea pipette joint of urea pipe fitting connection is equipped with 50um filter screen, provides urea
The primary filter of solution, while the urea tube tip side function of 9.49mm diameter being provided, facilitate the quick connection of urea pipe.
Specifically, the gear pump 1 includes: gear pump housing 101, rotary electric machine 102, and by the rotary electric machine
The gear pair 103 of 102 control rotations；The rotary electric machine 102 is suitable for controlling the gear pair 103 forward or reverse so that described
Negative pressure or positive pressure are formed in gear pump housing 101, i.e., when forming negative pressure in the gear pump housing 101, the gear pump 1 is taken out
Take the urea liquid in urea box 2 to purify to vehicle exhaust；And when formation positive pressure in the gear pump housing 101
When, the gear pump 1 draws back the urea liquid in vehicle exhaust portion 3 in the urea box 2.
In the present embodiment, gear pump includes: pump case, and wherein the pump upper casing of pump case uses aluminum alloy material, is provided
High strength shell body simultaneously carries out certain anti electromagnet interference function；Pump case includes pump bottom case, pump upper casing and polymeric membrane waterproof
Porous plug.
It is rotated to control rotary electric machine 102, the gear pump 1 includes: the driving electricity being electrical connected with the master control borad
Road；The output end of the driving circuit is suitable for being connected with the rotary electric machine 102；The master control borad is suitable for controlling the driving electricity
The output on road rotates to control the rotary electric machine 102.
In order to carry out refined filtration to urea liquid, the gear pump housing 101 includes: second level filter；The second level
Filter is suitable for being filtered the urea liquid flowed in the gear pump housing 101.
In the present embodiment, second level filter provides the secondary fine filtering function of urea liquid, it is ensured that enters gear pair
It is greater than the particulate matter of 50um in 103 urea liquid without containing particle.
For the fluid flow in real-time detection gear pump housing 101, be provided in the gear pump housing 101 with it is described
The Perfected electromagnetic metering valve that master control borad is electrical connected；The Perfected electromagnetic metering valve is suitable for the fluid flow in the gear pump housing 101
Data are sent to the master control borad, and the master control borad is suitable for controlling the output of the driving circuit according to the fluid flow data
To adjust the revolving speed of the rotary electric machine 102.
Fig. 3 is the functional block diagram of master control borad of the present invention；
Fig. 4 is the circuit diagram of processing module of the present invention.
Specifically, as shown in Figure 3, Figure 4, the master control borad includes: instruction acquisition module, processing module, and by described
The PWM drive module of processing module control；Wherein described instruction obtains module suitable for obtaining urea pump jeting instruction, and will be described
Urea pump jeting instruction is sent to the processing module；And the processing module is suitable for according to the urea pump jeting instruction control
The PWM drive module driving gear pump 1 is made to work.
In the present embodiment, processing module can use but be not limited to STM32 series embedded scm processor.
In the present embodiment, pressure sensor is mounted in the liquid stream road out that gear pump 1 is connected, to detect 1 He of gear pump
The pressure changing in urea runner between urea nozzle.
Fig. 5 is the circuit diagram of CAN bus module of the present invention.
In order to realize that muti-piece control unit is cascaded, the expansion to control unit is realized, as shown in figure 5, described instruction
Obtaining module includes: the CAN bus module being electrical connected with the processing module；The CAN bus module is adapted to vehicle
To obtain urea pump jeting instruction, the CAN bus module is further adapted for connecting vehicle post-processing ACU system electronic control ECU system
System is to obtain liquid level sensor, temperature sensor, quality sensor information collected in urea box 2, and the vehicle electric
Control ECU system and vehicle post-processing ACU system are interacted by the CAN bus module.
In the present embodiment, CAN bus module and processing module pass through serial communication.
In the present embodiment, gear type urea pump system includes: ptc heater；PTC heating sheet in ptc heater mentions
For heating heat, and by thermally conductive aluminum urea pump shell by the heat that PTC heating sheet generates pass to pump it is interior everywhere in need
The place of heating carries out heating operation.
In the present embodiment, gear type urea pump system includes: power protecting circuit, power-switching circuit, power protection
Circuit carries out reverse power connection protection using the insurance of self- recoverage patch and TVS pipe, diode, and power-switching circuit completes vehicle body voltage
To the conversion of chip voltage.
In the present embodiment, processing module acquires vehicle start and stop status information by T15 signal acquisition circuit.
In the present embodiment, gear type urea pump system includes: anti-static electricity interference circuit；Anti-static electricity interference circuit passes through electricity
Hold and resistance combination at filter circuit eliminate external electrostatic to the electrostatic interference of this system.
Embodiment 2
On the basis of embodiment 1, the present embodiment provides a kind of working methods of gear type urea pump system comprising:
The working method of the gear type urea pump system is suitable for working using gear type urea pump system.
Further, the gear type urea pump system includes: master control borad, and the gear being electrical connected with the master control borad
Pump 1；Wherein when a vehicle is started, the master control borad is suitable for controlling the urea liquid in the 1 extracted urea case 2 of gear pump with right
Vehicle exhaust is purified；And when vehicle stall, the master control borad is further adapted for controlling the gear pump 1 for vehicle exhaust portion
3 urea liquid is drawn back in the urea box 2.
In the present embodiment, master control borad, gear pump have illustrated clear in embodiment 1.
It rotates forward in conclusion the present invention can be realized gear and builds pressure injection and gear rotates backward and takes out operation, machine
Tool structure is simple, reduces components cumulative failure probability；Six emission regulation of state is met to post-processing urea pump injection real-time
Requirement；It realizes pump pressure 7.5bar or more, under the cooperation of Perfected electromagnetic metering valve, realizes the injection of full-liquid type urea, urea spray
The responsiveness of the amount of penetrating variation is fast, and substantially eliminates influence of the height above sea level difference to the amount of injection.
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (10)
1. a kind of gear type urea pump system characterized by comprising
Master control borad, and the gear pump being electrical connected with the master control borad；Wherein
When a vehicle is started, the master control borad is suitable for controlling the urea liquid in the gear pump extracted urea case to car tail
Gas is purified；And
When vehicle stall, the master control borad, which is further adapted for controlling the gear pump, draws back institute for the urea liquid in vehicle exhaust portion
It states in urea box.
2. gear type urea pump system as described in claim 1, which is characterized in that
The gear pump and the urea box connection are provided with initial filter device, the initial filter device be suitable for urea liquid into
Row primary filter.
3. gear type urea pump system as described in claim 1, which is characterized in that
The gear pump includes: gear pump housing, rotary electric machine, and the gear pair by rotary electric machine control rotation；
The rotary electric machine is suitable for controlling the gear pair forward or reverse so as to form negative pressure or just in the gear pump housing
Pressure, i.e.,
When forming negative pressure in the gear pump housing, the urea liquid in the gear pump extracted urea case is to vehicle exhaust
It is purified；And
When forming positive pressure in the gear pump housing, the urea liquid in vehicle exhaust portion is drawn back the urine by the gear pump
In plain case.
4. gear type urea pump system as claimed in claim 3, which is characterized in that
The gear pump includes: the driving circuit being electrical connected with the master control borad；
The output end of the driving circuit is suitable for being connected with the rotary electric machine；
The master control borad is suitable for controlling the output of the driving circuit, to control the rotary electric machine rotation.
5. gear type urea pump system as claimed in claim 3, which is characterized in that
The gear pump housing includes: second level filter；
The second level filter is suitable for being filtered the urea liquid flowed in the gear pump housing.
6. gear type urea pump system as claimed in claim 4, which is characterized in that
The Perfected electromagnetic metering valve being electrical connected with the master control borad is provided in the gear pump housing；
The Perfected electromagnetic metering valve is suitable for the fluid flow data in the gear pump housing being sent to the master control borad, the master
Control plate is suitable for controlling the output of the driving circuit according to the fluid flow data to adjust the revolving speed of the rotary electric machine.
7. gear type urea pump system as described in claim 1, which is characterized in that
The master control borad includes: instruction acquisition module, processing module, and the PWM drive module controlled by the processing module；
Wherein
Described instruction obtains module and is suitable for obtaining urea pump jeting instruction, and the urea pump jeting instruction is sent to the place
Manage module；And
The processing module is suitable for controlling the PWM drive module driving gear pump according to the urea pump jeting instruction and carries out work
Make.
8. gear type urea pump system as claimed in claim 7, which is characterized in that
It includes: the CAN bus module being electrical connected with the processing module that described instruction, which obtains module,；
The CAN bus module is adapted to Car Electronic Control ECU system to obtain urea pump jeting instruction, and the CAN is total
Wire module is further adapted for connecting vehicle post-processing ACU system to obtain liquid level sensor in urea box, temperature sensor, quality sensing
Device information collected, and
The Car Electronic Control ECU system and vehicle post-processing ACU system are handed over by the CAN bus module
Mutually.
9. a kind of working method of gear type urea pump system characterized by comprising
The working method of the gear type urea pump system is suitable for working using gear type urea pump system.
10. working method as claimed in claim 9, which is characterized in that
The gear type urea pump system includes: master control borad, and the gear pump being electrical connected with the master control borad；Wherein
When a vehicle is started, the master control borad is suitable for controlling the urea liquid in the gear pump extracted urea case to car tail
Gas is purified；And
When vehicle stall, the master control borad, which is further adapted for controlling the gear pump, draws back institute for the urea liquid in vehicle exhaust portion
It states in urea box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811336692.1A CN109236428A (en) | 2018-11-12 | 2018-11-12 | gear type urea pump system and working method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811336692.1A CN109236428A (en) | 2018-11-12 | 2018-11-12 | gear type urea pump system and working method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109236428A true CN109236428A (en) | 2019-01-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811336692.1A Pending CN109236428A (en) | 2018-11-12 | 2018-11-12 | gear type urea pump system and working method |
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| CN (1) | CN109236428A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114215629A (en) * | 2021-12-02 | 2022-03-22 | 江铃汽车股份有限公司 | Emptying method of electronic control type urea injection system |
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| CN112943419B (en) * | 2021-03-09 | 2022-11-29 | 广西卡迪亚科技有限公司 | Anti-crystallization control method for diesel engine SCR tail gas after-treatment system |
| CN114215629A (en) * | 2021-12-02 | 2022-03-22 | 江铃汽车股份有限公司 | Emptying method of electronic control type urea injection system |
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