CN211500758U - Air-assisted SCR (selective catalytic reduction) electronic control integrated system with detection function - Google Patents
Air-assisted SCR (selective catalytic reduction) electronic control integrated system with detection function Download PDFInfo
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- CN211500758U CN211500758U CN201922335150.9U CN201922335150U CN211500758U CN 211500758 U CN211500758 U CN 211500758U CN 201922335150 U CN201922335150 U CN 201922335150U CN 211500758 U CN211500758 U CN 211500758U
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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
-
- 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 provides an air-assisted SCR (selective catalytic reduction) electronic control integrated system with a detection function, which comprises a detection unit, an SCR integrated unit, a butt joint plug and an integrated wiring harness; the detection unit comprises an upper computer, a CAN card, a stabilized voltage power supply, an NOx sensor, a temperature exhaust sensor, a nozzle, an air filter and a compressed air source; the SCR integrated unit comprises a DCU, an ambient temperature sensor, a urea box, a urea metering pump, a urea liquid inlet pipe and a urea liquid return pipe; the upper computer is connected with a CAN card, and the CAN card is connected with a first sub-plug of the butt plug through a CAN wire harness; the NOx sensor is connected with a first sub-plug of the butt plug through a NOx sensor wire harness; the exhaust temperature sensor is connected with a first sub-plug of the butt plug through an exhaust temperature sensor wire harness; the nozzle is connected with a first sub-plug of the butt-joint plug through a nozzle control wire harness; the second sub-plug of the butt plug is connected with the DCU through an integrated wiring harness; the utility model discloses the troubleshooting of being convenient for reduces the fault rate of product when the on-the-spot assembly.
Description
Technical Field
The utility model relates to a automatically controlled integrated system of SCR, especially an automatically controlled integrated system of gas-assisted SCR who contains detection function.
Background
SCR aftertreatment systems can be used to reduce vehicle emissions. In the assembling process of the air-assisted SCR electronic control integrated system, some matching errors may exist, for example, the liquid feeding of a urea pump is not smooth, so that the urea pre-injection failure of the system is caused, the contact failure caused by the plugging and unplugging of a connector assembly, the assembly error of parts and the like, the faults can be divided into static faults and dynamic faults according to common failure modes in the production, the static faults comprise the short circuit or open circuit faults of the connectors of various sensors and actuators, and the dynamic faults comprise the pre-injection failure, the air feeding of a urea metering pump, the low liquid feeding pressure fault and the like.
Disclosure of Invention
To exist not enough among the prior art, the utility model provides a contain the automatically controlled integrated system of gas-assisted formula SCR who detects the function can carry out each item after SCR integrated unit assembles the completion and detects, and the troubleshooting of being convenient for reduces the fault rate of product when the on-the-spot assembly. The utility model adopts the technical proposal that:
an air-assisted SCR (selective catalytic reduction) electronic control integrated system with a detection function comprises a detection unit, an SCR integrated unit, a butt joint plug and an integrated wiring harness;
the detection unit comprises an upper computer, a CAN card, a voltage-stabilized power supply, an NOx sensor, a temperature discharge sensor, a nozzle, an air filter and a compressed air source;
the docking plug comprises a first sub-plug and a second sub-plug which are matched;
the SCR integrated unit comprises a DCU, an ambient temperature sensor, a urea box, a urea metering pump, a urea liquid inlet pipe and a urea liquid return pipe; wherein a heating water valve, a liquid level sensor and a temperature sensor are arranged in the urea tank;
the upper computer is connected with a CAN card, and the CAN card is connected with a first sub-plug of the butt plug through a CAN wire harness;
the stabilized voltage supply is connected with a first sub-plug of the butt plug through a power supply line;
the NOx sensor is connected with a first sub-plug of the butt plug through a NOx sensor wire harness;
the exhaust temperature sensor is connected with a first sub-plug of the butt plug through an exhaust temperature sensor wire harness;
the nozzle is connected with a first sub-plug of the butt-joint plug through a nozzle control wire harness;
the compressed air source is connected with an air filter through a pipeline, and the air filter is connected with an air inlet of the urea metering pump through a compressed air pipe; a liquid outlet of the urea metering pump is connected with a nozzle through a urea injection pipe;
the first sub-plug and the second sub-plug of the butt plug are oppositely plugged;
the second sub-plug of the butt plug is connected with the DCU through an integrated wiring harness;
the DCU is respectively connected with an environment temperature sensor and a control part of the urea metering pump; the DCU is also connected with a heating water valve, a liquid level sensor and a temperature sensor which are arranged in the urea box;
the liquid inlet of the urea metering pump is connected with the urea box through a urea liquid inlet pipe, and the liquid return port of the urea metering pump is connected with the urea box through a urea liquid return pipe.
Further, the docking plug is a 16-pin docking plug.
Further, the host computer adopts a PC.
The utility model has the advantages that: the static test and the dynamic test can be carried out more comprehensively after the SCR integrated unit is assembled, the detection range covers the common zero kilometer faults of the product, and the zero kilometer fault rate of the product on the client installation site is effectively reduced.
Drawings
Fig. 1 is a schematic connection diagram of the present invention.
Detailed Description
The invention is further described with reference to the following specific drawings and examples.
The gas-assisted SCR electronic control integrated system with the detection function comprises a detection unit, an SCR integrated unit, a docking plug and an integrated wiring harness 12, as shown in FIG. 1;
the detection unit comprises an upper computer 1, a CAN card 2, a stabilized voltage power supply 3, a NO sensor 4, a temperature exhaust sensor 5, a nozzle 6, an air filter 7 and a compressed air source 8;
the butt plug is a 16-pin butt plug, and the butt plug 16 comprises a first sub-plug and a second sub-plug which are matched with each other;
the SCR integrated unit comprises a DCU9, an ambient temperature sensor 10, a urea box 11, a urea metering pump 13, a urea liquid inlet pipe 14 and a urea liquid return pipe 15; wherein a heating water valve, a liquid level sensor and a temperature sensor are arranged in the urea box 11;
the upper computer 1 is connected with a CAN card 2, and the CAN card 2 is connected with a first sub-plug of the butt plug through a CAN wire harness;
the stabilized voltage power supply 3 is connected with a first sub-plug of the butt plug through a power supply line;
the NOx sensor 4 is connected with a first sub-plug of the butt plug through a NOx sensor wire harness;
the exhaust temperature sensor 5 is connected with a first sub-plug of the butt plug through an exhaust temperature sensor wire harness;
the nozzle 6 is connected with a first sub-plug of the butt plug through a nozzle control wire harness;
the compressed air source 8 is connected with the air filter 7 through a pipeline, and the air filter 7 is connected with the air inlet of the urea metering pump 13 through a compressed air pipe 17; a liquid outlet of the urea metering pump 13 is connected with the nozzle 6 through a urea injection pipe 16;
the first sub-plug and the second sub-plug of the butt plug are oppositely plugged;
the second sub-plug of the butt plug is connected with the DCU9 through an integrated wiring harness 12;
the DCU9 is respectively connected with an environment temperature sensor 10 and a control part of a urea metering pump 13; the DCU9 is also connected with a heating water valve, a liquid level sensor and a temperature sensor which are arranged in the urea box 11;
a liquid inlet of the urea metering pump 13 is connected with the urea box 11 through a urea liquid inlet pipe 14, and a liquid return port of the urea metering pump 13 is connected with the urea box 11 through a urea liquid return pipe 15;
the upper computer 1 can adopt a PC; during testing, the upper computer 1 sends an engine starting/flameout signal, a rotating speed signal, a torque signal, an accelerator position signal and the like to the SCR integrated unit through the CAN wire harness; the DCU9 can control the urea metering pump 13 to work according to the received signals;
when the upper computer 1 sends out an engine flameout signal, a static test is executed; the DCU9 may detect whether the connections of the ambient temperature sensor 10, the urea tank 11, and the urea metering pump 13 in the SCR integrated unit are normal, and may detect whether each branch harness corresponding to the NOx sensor, the exhaust temperature sensor, the nozzle, etc. in the integrated harness is normal, for example, whether there is an open circuit, for example, if the branch harness corresponding to the NOx sensor in the integrated harness is open, the DCU9 may not receive the NOx sensor signal; the static test also detects whether the contact of the butting plug is good; the DCU9 feeds the static test result back to the upper computer 1;
when the upper computer 1 sends out an engine starting signal, dynamic testing can be executed; the DCU9 obtains detection signals of whether the states of pre-injection, purging and the like are normal or not according to the working condition of the urea metering pump 13, and can also obtain signals of whether the gas circuit connection and the liquid circuit connection of the urea metering pump are normal or not; the DCU9 feeds the dynamic test result back to the upper computer 1;
the detection unit, the butt plug and the SCR integrated unit are matched, so that detailed detection work can be finished before the SCR integrated unit leaves a factory; the detection range covers the common zero-kilometer fault of the product, and the zero-kilometer fault rate of the product on a client installation site is effectively reduced.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the examples, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.
Claims (3)
1. An air-assisted SCR (selective catalytic reduction) electronic control integrated system with a detection function is characterized by comprising a detection unit, an SCR integrated unit, a docking plug and an integrated wiring harness (12);
the detection unit comprises an upper computer (1), a CAN card (2), a stabilized voltage power supply (3), an NOx sensor (4), a temperature exhaust sensor (5), a nozzle (6), an air filter (7) and a compressed air source (8);
the docking plug comprises a first sub-plug and a second sub-plug which are matched;
the SCR integrated unit comprises a DCU (9), an ambient temperature sensor (10), a urea box (11), a urea metering pump (13), a urea liquid inlet pipe (14) and a urea liquid return pipe (15); wherein a heating water valve, a liquid level sensor and a temperature sensor are arranged in the urea box (11);
the upper computer (1) is connected with a CAN card (2), and the CAN card (2) is connected with a first sub-plug of the butt plug through a CAN wire harness;
the stabilized voltage supply (3) is connected with a first sub-plug of the butt plug through a power supply line;
the NOx sensor (4) is connected with a first sub-plug of the butt plug through a NOx sensor wire harness;
the exhaust temperature sensor (5) is connected with a first sub-plug of the butt plug through an exhaust temperature sensor wire harness;
the nozzle (6) is connected with a first sub-plug of the butt plug through a nozzle control wire harness;
the compressed air source (8) is connected with the air filter (7) through a pipeline, and the air filter (7) is connected with the air inlet of the urea metering pump (13) through a compressed air pipe (17); a liquid outlet of the urea metering pump (13) is connected with the nozzle (6) through a urea injection pipe (16);
the first sub-plug and the second sub-plug of the butt plug are oppositely plugged;
the second sub-plug of the butt plug is connected with the DCU (9) through an integrated wiring harness (12);
the DCU (9) is respectively connected with an environment temperature sensor (10) and a control part of a urea metering pump (13); the DCU (9) is also connected with a heating water valve, a liquid level sensor and a temperature sensor which are arranged in the urea box (11);
the liquid inlet of the urea metering pump (13) is connected with the urea box (11) through a urea liquid inlet pipe (14), and the liquid return port of the urea metering pump (13) is connected with the urea box (11) through a urea liquid return pipe (15).
2. An integrated, gas-assisted SCR electrical control system including detection functionality according to claim 1,
the butt plug is a 16-pin butt plug.
3. An integrated, gas-assisted SCR electrical control system including detection functionality according to claim 1,
the upper computer (1) adopts a PC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922335150.9U CN211500758U (en) | 2019-12-24 | 2019-12-24 | Air-assisted SCR (selective catalytic reduction) electronic control integrated system with detection function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922335150.9U CN211500758U (en) | 2019-12-24 | 2019-12-24 | Air-assisted SCR (selective catalytic reduction) electronic control integrated system with detection function |
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| CN211500758U true CN211500758U (en) | 2020-09-15 |
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| CN201922335150.9U Active CN211500758U (en) | 2019-12-24 | 2019-12-24 | Air-assisted SCR (selective catalytic reduction) electronic control integrated system with detection function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115075926A (en) * | 2022-05-11 | 2022-09-20 | 潍柴动力股份有限公司 | Aftertreatment fault detection device and method and diesel engine |
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2019
- 2019-12-24 CN CN201922335150.9U patent/CN211500758U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115075926A (en) * | 2022-05-11 | 2022-09-20 | 潍柴动力股份有限公司 | Aftertreatment fault detection device and method and diesel engine |
| CN115075926B (en) * | 2022-05-11 | 2024-03-19 | 潍柴动力股份有限公司 | Post-processing fault detection device and method and diesel engine |
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