CN205823390U - A kind of electric power system of heavy-duty car SCR system - Google Patents
A kind of electric power system of heavy-duty car SCR system Download PDFInfo
- Publication number
- CN205823390U CN205823390U CN201620553637.8U CN201620553637U CN205823390U CN 205823390 U CN205823390 U CN 205823390U CN 201620553637 U CN201620553637 U CN 201620553637U CN 205823390 U CN205823390 U CN 205823390U
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- China
- Prior art keywords
- urea
- relay
- storage battery
- dcu
- main switch
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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
- Y02T10/12—Improving ICE efficiencies
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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 utility model discloses the electric power system of a kind of heavy-duty car SCR system, including DCU, urea pump, urea nozzle, storage battery, battery main switch and vehicle electrical equipment, also include relay and control the controller of relay, timer it is provided with in controller, described DCU, urea pump, after urea nozzle parallel connection, its energization pins end is connected to the positive pole of storage battery by relay, the energization pins end of vehicle electrical equipment is connected to the positive pole of storage battery by battery main switch, relay is in parallel with battery main switch, DCU, urea pump, after urea nozzle and vehicle electrical equipment parallel connection, its grounding lead foot is commonly connected to the negative pole of storage battery.This utility model still can ensure that DCU, urea pump and urea nozzle delay power certain time after battery main switch disconnects, and controls carbamide and has refluxed；Simple in construction of the present utility model, reliability are high, are suitable at heavy-duty car field large-scale promotion application, change less to the circuit of car load, can carry out the repacking upgrading of heavy-duty car easily.
Description
Technical field
This utility model relates to the electric power system of a kind of heavy-duty car SCR system, particularly relates to a kind of power cut off delay time
Adjustable electric power system.
Background technology
The regulation of our country is increasingly stricter to the emission request of heavy vehicle exhaust at present, arranging into of vehicle exhaust
For weighing a major criterion of automotive quality.In order to reach state IV and more maximum discharge requirement, the many employings of present heavy-duty car
Tail gas is processed by selective catalytic oxidation also original system (SCR system).SCR system electric control part is divided and is included DCU, urea pump
And urea nozzle.The feature of SCR system determines it when car load switch-off, it is desirable to carbamide refluxes, can guarantee that next time opens
Normally work time dynamic.If driver's drop battery main switch at once after flame-out, then probably due to carbamide backflow does not complete,
The urea liquid causing residual crystallizes, when especially ambient temperature is relatively low at urea tube and urea pump, it is also possible to damage carbamide
Pump.
Existing heavy-duty car, to the problems referred to above processing means the most targetedly, fully relies on the individual behaviour of driver
Make.In actual use, it is easy to the problem occurring SCR system normally to work, the normal use of vehicle is affected.Cause
This is badly in need of a kind of electric power system can solve this problem.
Utility model content
This utility model is in order to overcome the deficiency of above technology, it is provided that the electric power system of a kind of heavy-duty car SCR system,
This system still can ensure that DCU, urea pump and urea nozzle delay power certain time after battery main switch disconnects, and controls urine
Element has refluxed.
Term is explained:
1, DCU:Dosing Control Unit, carbamide spraying fire unit.
2, ECU:Electronic Control Unit, electronic control unit.
This utility model overcomes its technical problem be the technical scheme is that
The electric power system of a kind of heavy-duty car SCR system, including DCU, urea pump, urea nozzle, storage battery, battery main switch
And vehicle electrical equipment, also include relay and control the controller of relay, in controller, being provided with timer, described
After DCU, urea pump, urea nozzle parallel connection, its energization pins end is connected to the positive pole of storage battery, vehicle electrical equipment by relay
Energization pins end be connected to the positive pole of storage battery by battery main switch, relay is in parallel with battery main switch, DCU, urea pump,
After urea nozzle and vehicle electrical equipment parallel connection, its grounding lead foot is commonly connected to the negative pole of storage battery.
Preferred according to this utility model, described controller is provided with LCDs and button, can be according to difference
The SCR system of structure and different arrangements adjust the power cut off delay time, improve the adaptability of system.
The beneficial effects of the utility model are:
This utility model still can ensure that DCU, urea pump and urea nozzle delay power one after battery main switch disconnects
Fix time, control carbamide and refluxed；Simple in construction of the present utility model, reliability are high, are suitable on the big rule in heavy-duty car field
Mould popularization and application, change less to the circuit of car load, can carry out the repacking upgrading of heavy-duty car easily.
Accompanying drawing explanation
Fig. 1 is the principle schematic of the electric power system of heavy-duty car SCR system described in the utility model.
In figure, 1, DCU, 2, urea pump, 3, urea nozzle, 4, storage battery, 5, battery main switch, 6, vehicle electrical equipment, 7,
Relay, 8, controller.
Detailed description of the invention
It is better understood from this utility model, below in conjunction with the accompanying drawings with specific embodiment to this reality for the ease of those skilled in the art
Being described in further details with novel, following is only exemplary not limit protection domain of the present utility model.
As it is shown in figure 1, the electric power system of heavy-duty car SCR system of the present utility model, including DCU1, urea pump 2, carbamide
Nozzle 3, storage battery 4, battery main switch 5, vehicle electrical equipment 6, relay 7 and the controller 8 of control relay, controller 8
Inside being provided with timer, after described DCU1, urea pump 2, urea nozzle 3 parallel connection, its energization pins end is connected to by relay 7
The positive pole of storage battery 4, the energization pins end of vehicle electrical equipment 6 is connected to the positive pole of storage battery 4, relay 7 by battery main switch 5
In parallel with battery main switch 5, after DCU1, urea pump 2, urea nozzle 3 and vehicle electrical equipment 6 parallel connection, its grounding lead foot is common
It is connected to the negative pole of storage battery 4.LCDs and button it is additionally provided with to adjust power cut off delay time, Ke Yigen on controller 8
SCR system and different arrangements according to different structure adjust the power cut off delay time, improve the adaptability of system.
Controller 8 collection vehicle key switch signal, when key switch is connected, controller 8 controls relay 7 and connects at once
Logical, DCU1, urea pump 2 and urea nozzle 3 are energized；When controller 8 detects that car key switches off, in controller 8
Timer starts timing, and when reaching delay time set in advance, controller 8 just controls to disconnect relay 7, so that
DCU1, urea pump 2 and urea nozzle 3 power-off, so ensure after key switch power-off, though deenergization main switch 5, DCU1
Still can control carbamide refluxed with the delay power regular hour with urea pump 2, and for vehicle electrical equipment 6, when disconnected
After switch power supply main switch 5, power-off the most at once.
Above only describes ultimate principle of the present utility model and preferred implementation, those skilled in the art can be according to above-mentioned
Many changes may be made and improves in description, and these changes and improvements should belong to protection domain of the present utility model.
Claims (2)
1. an electric power system for heavy-duty car SCR system, including DCU(1), urea pump (2), urea nozzle (3), storage battery (4),
Battery main switch (5) and vehicle electrical equipment (6), it is characterised in that: also include relay (7) and control the control of relay
Device (8), is provided with timer, described DCU(1 in controller (8)), urea pump (2), after urea nozzle (3) parallel connection its power supply draw
Foot is connected to the positive pole of storage battery (4) by relay (7), and the energization pins end of vehicle electrical equipment (6) is always opened by power supply
Closing (5) and be connected to the positive pole of storage battery (4), relay (7) is in parallel with battery main switch (5), DCU(1), urea pump (2), carbamide sprays
After mouth (3) and vehicle electrical equipment (6) parallel connection, its grounding lead foot is commonly connected to the negative pole of storage battery (4).
Electric power system the most according to claim 1, it is characterised in that: described controller is provided with LCDs on (8)
The power cut off delay time is adjusted with button.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620553637.8U CN205823390U (en) | 2016-06-12 | 2016-06-12 | A kind of electric power system of heavy-duty car SCR system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620553637.8U CN205823390U (en) | 2016-06-12 | 2016-06-12 | A kind of electric power system of heavy-duty car SCR system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205823390U true CN205823390U (en) | 2016-12-21 |
Family
ID=57568045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620553637.8U Active CN205823390U (en) | 2016-06-12 | 2016-06-12 | A kind of electric power system of heavy-duty car SCR system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205823390U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105888789A (en) * | 2016-06-12 | 2016-08-24 | 中国重汽集团济南动力有限公司 | Power supply system of heavy-duty car SCR system |
-
2016
- 2016-06-12 CN CN201620553637.8U patent/CN205823390U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105888789A (en) * | 2016-06-12 | 2016-08-24 | 中国重汽集团济南动力有限公司 | Power supply system of heavy-duty car SCR system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |