CN111999071A - Complete vehicle SCR calibration test system based on NH3 sensor - Google Patents
Complete vehicle SCR calibration test system based on NH3 sensor Download PDFInfo
- Publication number
- CN111999071A CN111999071A CN202010701571.3A CN202010701571A CN111999071A CN 111999071 A CN111999071 A CN 111999071A CN 202010701571 A CN202010701571 A CN 202010701571A CN 111999071 A CN111999071 A CN 111999071A
- Authority
- CN
- China
- Prior art keywords
- sensor
- vehicle
- data
- signals
- controller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 16
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 174
- 229910000069 nitrogen hydride Inorganic materials 0.000 claims abstract description 83
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 4
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 238000012545 processing Methods 0.000 claims abstract description 4
- 238000004458 analytical method Methods 0.000 abstract description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
-
- 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]
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/0054—Ammonia
-
- 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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Toxicology (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Exhaust Gas After Treatment (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a whole vehicle SCR calibration test system based on an NH3 sensor, which comprises a vehicle ECU (electronic control Unit), also called a vehicle-mounted computer, wherein the vehicle ECU collects signals of various sensors, carries out operation, converts an operation result into a control signal and controls the work of a controlled object; the whole vehicle exhaust pipe is used for discharging automobile exhaust; an NH3 sensor to collect ammonia concentration data; an NH3 controller for controlling the NH3 sensor to work and processing the NH3 sensor signal; the ETAS 592 device is used for acquiring vehicle signals and NH3 sensor signals, and can be communicated with a vehicle ECU in real time to calibrate; and the calibration computer is used for acquiring signals, storing data, analyzing data and calibrating data. The invention is based on the existing NH3 sensor, and a circuit is manufactured to ensure that the NH3 sensor can normally work on the whole vehicle, control the power supply and data acquisition of the NH3 sensor, can record the information of NH3 leakage in vehicle exhaust in real time, is convenient for the analysis and adjustment of test data, and greatly improves the working efficiency.
Description
Technical Field
The invention relates to the technical field of automobile exhaust treatment, in particular to a complete automobile SCR calibration test system based on an NH3 sensor.
Background
SCR is the acronym for Selective, Catalytic, Reduction, and is an off-board purification system. The SCR technology is applied to the diesel engine, the internal structure of the diesel engine does not need to be changed, only the SCR catalyst is arranged in the exhaust pipe, and other SCR system components can be arranged around the engine according to the field space, so that the SCR system is simple to install.
At the national six emission regulation stage, the SCR route is generally adopted, and the regulation has strict limitation on NH3 leakage, so that the real-time measurement of NH3 leakage is very important. The NOx sensor cannot distinguish between NOx and NH3 in the exhaust gas due to the cross-sensitivity of NOx and NH3, and the measured value is the sum of the concentrations of NOx and NH3 in the gas. In the whole vehicle calibration process, whether NH3 leakage occurs in the post-processing SCR can be judged only under the condition of towing, and relevant data of NH3 leakage cannot be obtained in a test. The existing measuring equipment is mainly LDS or FTIR, is generally applied to a bench test chamber due to the problems of equipment size, working conditions and the like, and has the problem of high price. When the whole vehicle is tested on the road, specific data of NH3 emission cannot be acquired.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a complete vehicle SCR calibration test system based on an NH3 sensor.
In order to achieve the purpose of the invention, the invention adopts the technical scheme that:
a whole vehicle SCR calibration test system based on NH3 sensors comprises a vehicle ECU (electronic control Unit), also called a vehicle-mounted computer, which collects signals of all sensors, performs operation, converts the operation result into a control signal and controls the work of a controlled object;
the whole vehicle exhaust pipe is used for discharging automobile exhaust;
an NH3 sensor to collect ammonia concentration data;
an NH3 controller for controlling the NH3 sensor to work and processing the NH3 sensor signal;
the ETAS 592 device is used for acquiring vehicle signals and NH3 sensor signals, and can be communicated with a vehicle ECU in real time to calibrate;
the calibration computer is used for acquiring signals, storing data, analyzing the data and calibrating the data;
the NH3 sensor passes through the connecting wire and is connected with NH3 controller, the NH3 controller passes through the connecting wire and is connected with ETAS 592 equipment, the NH3 controller passes through NH3 controller power supply line and is connected with whole car, ETAS 592 equipment passes through the connecting wire and is connected with the demarcation computer, ETAS 592 equipment passes through the connecting wire and is connected with vehicle ECU.
Further, the NH3 sensor is arranged at an air outlet of an exhaust pipe of the whole vehicle.
The invention has the beneficial effects that: the invention is based on the existing NH3 sensor, a circuit is manufactured to ensure that the NH3 sensor can normally work on the whole vehicle, the power supply and the data acquisition of the NH3 sensor are controlled, the information of NH3 leakage in vehicle exhaust can be recorded in real time, the analysis and the adjustment of test data are convenient, the sensor can be used in a laboratory and the whole vehicle, the price is low, and the use is convenient; the measured numerical value is measured through ETAS equipment and recorded in a calibration computer, and calibration personnel can accurately adjust the emission data of a certain working condition, so that the working efficiency is greatly improved, the analysis of test data is convenient, and the price is low; and the NOx sensor on the aftertreatment is matched, so that accurate NOx and NH3 emission information can be obtained simultaneously under any working condition, the calibration of ECU data is facilitated, and the test efficiency and the test data precision are greatly improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the NH3 controller connection of the present invention;
reference symbol comparison table:
1. the system comprises a calibration computer, 2, a connecting network cable between ETAS 592 equipment and the calibration computer, 3, ETAS 592 equipment, 4, a connecting line between the ETAS 592 equipment and an NH3 controller, 5, an NH3 controller, a connecting line between a 6 sensor and an NH3 sensor and an NH3 controller, 7, an NH3 sensor, 8, a vehicle exhaust pipe, 9, an NH3 controller power supply line, and 10, a connecting line between a vehicle ECU and the ETAS 592 equipment.
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings. In which like parts are designated by like reference numerals.
It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
In order to make the content of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.
As shown in fig. 1, a complete vehicle SCR calibration test system based on NH3 sensor includes a vehicle ECU, also called a vehicle-mounted computer, which collects signals of each sensor, performs calculation, and converts the result of the calculation into a control signal to control the operation of a controlled object;
the whole vehicle exhaust pipe is used for discharging automobile exhaust;
an NH3 sensor to collect ammonia concentration data;
an NH3 controller for controlling the NH3 sensor to work and processing the NH3 sensor signal;
the ETAS 592 device is used for acquiring vehicle signals and NH3 sensor signals, and can be communicated with a vehicle ECU in real time to calibrate;
the calibration computer is used for acquiring signals, storing data, analyzing the data and calibrating the data;
the NH3 sensor passes through the connecting wire and is connected with NH3 controller, the NH3 controller passes through the connecting wire and is connected with ETAS 592 equipment, the NH3 controller passes through NH3 controller power supply line and is connected with whole car, ETAS 592 equipment passes through the connecting wire and is connected with the demarcation computer, ETAS 592 equipment passes through the connecting wire and is connected with vehicle ECU.
The NH3 sensor is arranged at an air outlet of an exhaust pipe of the whole vehicle.
During the use of the device, firstly, a base is machined at the tail part of the exhaust pipe, an NH3 sensor is installed, an NH3 sensor controller is fixed, the NH3 sensor controller is compatible with 12V and 24V systems, a power supply line of the NH3 controller is directly connected with a storage battery or other power supply equipment of the whole automobile, signals of the NH3 controller are transmitted to ETAS 592 equipment while the NH3 sensor is powered through a design wiring harness, and NH3 leakage information can be collected and stored in real time through INCA software of a calibration computer.
Because the NOx sensor has cross sensitivity to NOx and NH3, the measured data cannot be distinguished as NOx or NH3, the invention designs wire harness power supply and is connected with ETAS equipment through externally-connected and additionally-installed NH3 measuring equipment, and real-time NH3 emission information can be collected and recorded on a calibration computer. The NH3 sensor and the NOx sensor collect data together, so that specific NOx emission and NH3 emission in the tail row of the whole vehicle are calculated, the development of engine SCR calibration work is facilitated, and the working efficiency is greatly improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (2)
1. The utility model provides a whole car SCR calibrates test system based on NH3 sensor which characterized in that:
the system comprises a vehicle ECU (electronic control Unit), also called a vehicle-mounted computer, which collects signals of various sensors, performs operation, converts the operation result into a control signal and controls the work of a controlled object;
the whole vehicle exhaust pipe is used for discharging automobile exhaust;
an NH3 sensor to collect ammonia concentration data;
an NH3 controller for controlling the NH3 sensor to work and processing the NH3 sensor signal;
the ETAS 592 device is used for acquiring vehicle signals and NH3 sensor signals, and can be communicated with a vehicle ECU in real time to calibrate;
the calibration computer is used for acquiring signals, storing data, analyzing the data and calibrating the data;
the NH3 sensor passes through the connecting wire and is connected with NH3 controller, the NH3 controller passes through the connecting wire and is connected with ETAS 592 equipment, the NH3 controller passes through NH3 controller power supply line and is connected with whole car, ETAS 592 equipment passes through the connecting wire and is connected with the demarcation computer, ETAS 592 equipment passes through the connecting wire and is connected with vehicle ECU.
2. The complete vehicle SCR calibration test system based on the NH3 sensor according to claim 1, wherein: the NH3 sensor is arranged at an air outlet of an exhaust pipe of the whole vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010701571.3A CN111999071A (en) | 2020-07-20 | 2020-07-20 | Complete vehicle SCR calibration test system based on NH3 sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010701571.3A CN111999071A (en) | 2020-07-20 | 2020-07-20 | Complete vehicle SCR calibration test system based on NH3 sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111999071A true CN111999071A (en) | 2020-11-27 |
Family
ID=73467023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010701571.3A Pending CN111999071A (en) | 2020-07-20 | 2020-07-20 | Complete vehicle SCR calibration test system based on NH3 sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111999071A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204666472U (en) * | 2015-05-28 | 2015-09-23 | 无锡伟博汽车科技有限公司 | A kind of smoke intensity caliberating device demarcated for automobile |
| CN106870080A (en) * | 2017-01-23 | 2017-06-20 | 哈尔滨工程大学 | A kind of method of real-time suitable for marine diesel SCR system NH3, NOx concentration and residing temperature |
| CN109653853A (en) * | 2019-01-28 | 2019-04-19 | 江苏大学 | Diesel engine vent gas joint processing system and control method |
| CN110685784A (en) * | 2018-07-04 | 2020-01-14 | 上海交通大学 | Agricultural machinery engine post-treatment SCR system urea quality detection device and method |
| CN110792488A (en) * | 2019-09-29 | 2020-02-14 | 江铃汽车股份有限公司 | Exhaust aftertreatment system meeting national sixth requirement of light-duty diesel vehicle |
| CN110905639A (en) * | 2019-11-29 | 2020-03-24 | 东风商用车有限公司 | System and method for correcting SCR ammonia storage model |
-
2020
- 2020-07-20 CN CN202010701571.3A patent/CN111999071A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204666472U (en) * | 2015-05-28 | 2015-09-23 | 无锡伟博汽车科技有限公司 | A kind of smoke intensity caliberating device demarcated for automobile |
| CN106870080A (en) * | 2017-01-23 | 2017-06-20 | 哈尔滨工程大学 | A kind of method of real-time suitable for marine diesel SCR system NH3, NOx concentration and residing temperature |
| CN110685784A (en) * | 2018-07-04 | 2020-01-14 | 上海交通大学 | Agricultural machinery engine post-treatment SCR system urea quality detection device and method |
| CN109653853A (en) * | 2019-01-28 | 2019-04-19 | 江苏大学 | Diesel engine vent gas joint processing system and control method |
| CN110792488A (en) * | 2019-09-29 | 2020-02-14 | 江铃汽车股份有限公司 | Exhaust aftertreatment system meeting national sixth requirement of light-duty diesel vehicle |
| CN110905639A (en) * | 2019-11-29 | 2020-03-24 | 东风商用车有限公司 | System and method for correcting SCR ammonia storage model |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102797546B (en) | Gain/amplitude diagnostics of NOx sensors | |
| CN109268116B (en) | Model-based monitoring of selective catalytic reduction devices in aftertreatment assemblies | |
| CN103256109B (en) | Automobile exhaust emission remote real-time monitoring system and monitoring method based on OBD-II system | |
| US20120173121A1 (en) | Vehicular diagnostic system | |
| CN101963800A (en) | Remote real-time monitoring system and monitoring method for diesel vehicle road emission | |
| CN111537412B (en) | Emission monitoring device, system and method | |
| CN112798288B (en) | Portable vehicle-mounted remote emission energy consumption measuring system and method for heavy-duty diesel vehicle | |
| CN105069860B (en) | A kind of statistical method of vehicle oil consumption | |
| CN110685784B (en) | Agricultural machinery engine post-treatment SCR system urea quality detection device and method | |
| CN202677184U (en) | Data acquisition and fault diagnosis terminal for vehicle | |
| CN206144639U (en) | Diesel engine exhaust gas detecting system and vehicle | |
| CN105954472B (en) | Device and method for detecting emission drifting of NOx of original engine of diesel engine | |
| CN115238651A (en) | Method for analyzing NOX emission value by ECU data | |
| CN215263401U (en) | Portable emission test system | |
| Funk | Real world NOx sensor accuracy assessment and implications for REAL NOx tracking | |
| CN111141875A (en) | Simulation experiment system and experiment method for measuring tail gas of mine fuel oil vehicle | |
| CN113884307A (en) | Method and system for detecting accuracy of air inflow sensor | |
| US10416042B2 (en) | Engine exhaust emissions monitoring device | |
| CN103362680B (en) | A kind of vehicle engine control unit basis caliberating device | |
| CN111999071A (en) | Complete vehicle SCR calibration test system based on NH3 sensor | |
| CN206593868U (en) | The test equipment of tail-gas after treatment apparatus emission reduction effect | |
| CN205714381U (en) | A kind of tail gas care testing device | |
| CN201152940Y (en) | Automatic synthetic fault remote detection system based on wireless network | |
| CN207318680U (en) | A kind of vehicle electric performance testing device | |
| CN110243614B (en) | Detection system for automobile exhaust SCR |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201127 |