CN109655584A - A kind of vehicle-mounted NOx detection method and module - Google Patents
A kind of vehicle-mounted NOx detection method and module Download PDFInfo
- Publication number
- CN109655584A CN109655584A CN201811550738.XA CN201811550738A CN109655584A CN 109655584 A CN109655584 A CN 109655584A CN 201811550738 A CN201811550738 A CN 201811550738A CN 109655584 A CN109655584 A CN 109655584A
- Authority
- CN
- China
- Prior art keywords
- nox
- unit
- vehicle
- exh
- instantaneous
- 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
- 238000001514 detection method Methods 0.000 title claims abstract description 29
- 238000002347 injection Methods 0.000 claims description 12
- 239000007924 injection Substances 0.000 claims description 12
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 6
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 5
- 229910052573 porcelain Inorganic materials 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 6
- BUCXEFZXWKUCCY-UHFFFAOYSA-N 4-methyl-3-(2-phenylethyl)-1,2,4-oxadiazol-5-one Chemical compound O1C(=O)N(C)C(CCC=2C=CC=CC=2)=N1 BUCXEFZXWKUCCY-UHFFFAOYSA-N 0.000 abstract 1
- 238000002229 photoelectron microspectroscopy Methods 0.000 abstract 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 103
- 239000007789 gas Substances 0.000 description 14
- 238000012360 testing method Methods 0.000 description 5
- 239000000356 contaminant Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- G01N33/0037—NOx
-
- 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
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The invention discloses a kind of vehicle-mounted NOx detection method and module, method includes: to acquire the instantaneous wet basis concentration NOx of NOx in Raw exhaust by NOx sensorconc, wherein NOxconcUnit be ppm；Obtain instantaneous exhaust gas flow Gexh, wherein GexhUnit be kg/h；According to NOxconcAnd Gexh, calculate instantaneous NOx emission flowWherein, NOxtUnit be g/s；Acquire motor instant torque TtWith motor instant revolving speed nt, wherein TtUnit be Nm, ntUnit be r/min；According to TtAnd nt, calculate instantaneous functionWherein, WtUnit be kWh；According to NOxtAnd Wt, NOx function base window is calculated than dischargeThe instantaneous wet basis concentration NOx of NOx that the vehicle-mounted NOx detection method of the disclosure is measured by NOx sensorconcNOx function base window is calculated than discharge, for the error with the PEMS data measured within ± 5%, precision fully meets the requirement of calibration development phase, is conducive to easily detect vehicle-mounted discharge in time in the development phase.
Description
Technical field
The present invention relates to automobile exhaust contaminant fields, more particularly, to a kind of vehicle-mounted NOx detection method and module.
Background technique
The capacity of heavy truck (also known as heavy truck) is big, it is necessary to which the requirement for meeting vehicle-mounted discharge limit value needs to carry out vehicle
Carry emission test.On-board emission test refers to for portable system for testing discharge (PEMS) being installed on vehicle, and exists to vehicle
Exhaust contaminant on real road when driving measures.Above-mentioned exhaust contaminant is mainly nitrogen oxides (NOx).
Currently, on-board emission test is completed by PEMS.PEMS generally include power supply, power distribution module, system host,
The components such as tail gas stream meter, gas analyzer, particulate matter analyzer, environment measurement module, GPS.The weight of PEMS is big, and installation is tired
Difficulty, common PEMS weight are more than 350kg, and installation needs fork truck and crane.Moreover, PEMS is needed when in use using special gas
Bottle is demarcated, and it is more than hour to test time needs two for single.In addition, PEMS belongs to precision instrument, it can not be by rain
The pollution such as water, can not be tested in sleet sky.These defects of PEMS cause to be difficult in time in the development phase of heavy truck
To detection vehicle-mounted discharge.
Therefore, how to provide one kind easily can become this field in the method that the development phase detect vehicle-mounted discharge in time
The technical problem of urgent need to resolve.
Summary of the invention
It is an object of the present invention to provide a kind of the detection side of vehicle-mounted NOx easily can be detected in time in the development phase
The new solution of method.
According to the first aspect of the invention, a kind of vehicle-mounted NOx detection method is provided.
The vehicle-mounted NOx detection method includes the following steps:
The instantaneous wet basis concentration NOx of NOx in Raw exhaust is acquired by NOx sensorconc, wherein NOxconcUnit be
ppm；
Obtain instantaneous exhaust gas flow Gexh, wherein GexhUnit be kg/h；
According to NOxconcAnd Gexh, calculate instantaneous NOx emission flowWherein,
NOxtUnit be g/s；
Acquire motor instant torque TtWith motor instant revolving speed nt, wherein TtUnit be Nm, ntUnit be r/
min；
According to TtAnd nt, calculate instantaneous functionWherein, WtUnit be kWh；
According to NOxtAnd Wt, NOx function base window is calculated than discharge
Optionally, instantaneous exhaust gas flow GexhAcquisition modes it is as follows:
Acquire engine intake airflow and Engine Injection Mass；
Instantaneous exhaust gas flow GexhFor the sum of engine intake airflow and Engine Injection Mass.
Optionally, engine intake airflow is acquired by air flow meter.
Optionally, engine intake airflow passes through acquisition intake air temperature and admission pressure, and according to intake air temperature and air inlet
Calculation of pressure obtains.
Optionally, NOx sensor is ceramic zirconium oxide NOx sensor.
According to the second aspect of the invention, a kind of vehicle-mounted NOx detection module is provided.
The vehicle-mounted NOx detection module is used to acquire the instantaneous wet basis concentration of NOx in Raw exhaust by NOx sensor
NOxconc, and acquisition motor instant torque TtWith motor instant revolving speed nt；Obtain instantaneous exhaust gas flow Gexh；According to
NOxconcAnd Gexh, calculate instantaneous NOx emission flowAccording to TtAnd nt, calculate instantaneous
FunctionWtUnit be kWh；According to NOxtAnd Wt, NOx function base window is calculated than dischargeIts
In, NOxconcUnit be ppm, GexhUnit be kg/h, NOxtUnit be g/s, TtUnit be Nm, ntUnit be r/
min。
Optionally, the instantaneous exhaust gas flow GexhAcquisition modes it is as follows:
Acquire engine intake airflow and Engine Injection Mass；
Instantaneous exhaust gas flow GexhFor the sum of engine intake airflow and Engine Injection Mass.
Optionally, the engine intake airflow is acquired by air flow meter.
Optionally, the engine intake airflow is by acquisition intake air temperature and admission pressure, and according to intake air temperature and
Admission pressure speed is calculated.
Optionally, the NOx sensor is ceramic zirconium oxide NOx sensor.
The instantaneous wet basis concentration NOx of NOx that the vehicle-mounted NOx detection method of the disclosure is measured by NOx sensorconcIt calculates
To NOx function base window than discharging, for the error with the PEMS data measured within ± 5%, precision fully meets calibration exploitation rank
The requirement of section, is conducive to easily detect vehicle-mounted discharge in time in the development phase.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and its
Advantage will become apparent.
Detailed description of the invention
It is combined in the description and the attached drawing for constituting part of specification shows the embodiment of the present invention, and even
With its explanation together principle for explaining the present invention.
Fig. 1 is the flow chart of the vehicle-mounted NOx detection method embodiment of the disclosure.
Specific embodiment
Carry out the various exemplary embodiments of detailed description of the present invention now with reference to attached drawing.It should also be noted that unless in addition having
Body explanation, the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally
The range of invention.
Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to the present invention
And its application or any restrictions used.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as part of specification.
It is shown here and discuss all examples in, any occurrence should be construed as merely illustratively, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, then in subsequent attached drawing does not need that it is further discussed.
As shown in Figure 1, the vehicle-mounted NOx detection method of the disclosure includes the following steps:
Step S01: the instantaneous wet basis concentration NOx of NOx in Raw exhaust is acquired by NOx sensorconc.Wherein, NOxconc
Unit be ppm.When it is implemented, NOx sensor is ceramic zirconium oxide NOx sensor.
Step S02: instantaneous exhaust gas flow G is obtainedexh.Wherein, GexhUnit be kg/h.
Instantaneous exhaust gas flow GexhAcquisition modes can be as follows: acquisition engine intake airflow and Engine Injection Mass.Instantaneously
Extraction flow GexhFor the sum of engine intake airflow and Engine Injection Mass.Above-mentioned engine intake airflow can pass through air stream
Meter acquisition.Alternatively, engine intake airflow passes through acquisition intake air temperature and admission pressure, and according to intake air temperature and air inlet pressure
Power is calculated.
Step S03: according to NOxconcAnd Gexh, calculate instantaneous NOx emission flowIts
In, NOxtUnit be g/s.
Step S04: acquisition motor instant torque TtWith motor instant revolving speed nt.Wherein, TtUnit be Nm, nt's
Unit is r/min.
Step S05: according to TtAnd nt, calculate instantaneous functionWherein, WtUnit be kWh.
Step S06: according to NOxtAnd Wt, NOx function base window is calculated than discharge
The instantaneous wet basis concentration NOx of NOx that the vehicle-mounted NOx detection method of the disclosure is measured by NOx sensorconcIt calculates
To NOx function base window than discharging, for the error with the PEMS data measured within ± 5%, precision fully meets calibration exploitation rank
The requirement of section, is conducive to easily detect vehicle-mounted discharge in time in the development phase.
Present disclose provides a kind of vehicle-mounted NOx detection modules.
The vehicle-mounted NOx detection module is used to acquire the instantaneous wet basis concentration of NOx in Raw exhaust by NOx sensor
NOxconc, and acquisition motor instant torque TtWith motor instant revolving speed nt；Obtain instantaneous exhaust gas flow Gexh.According to
NOxconcAnd Gexh, calculate instantaneous NOx emission flowAccording to TtAnd nt, calculate instantaneous
FunctionWtUnit be kWh；According to NOxtAnd Wt, NOx function base window is calculated than discharge
Wherein, NOxconcUnit be ppm, GexhUnit be kg/h, NOxtUnit be g/s, TtUnit be Nm, ntUnit be
r/min。
In one embodiment of the vehicle-mounted NOx detection module of the disclosure, the instantaneous exhaust gas flow GexhAcquisition modes such as
Under:
Acquire engine intake airflow and Engine Injection Mass；
Instantaneous exhaust gas flow GexhFor the sum of engine intake airflow and Engine Injection Mass.
Further, the engine intake airflow is acquired by air flow meter.
Further, the engine intake airflow passes through acquisition intake air temperature and admission pressure, and according to intake air temperature
It is calculated with admission pressure speed.
In one embodiment of the vehicle-mounted NOx detection module of the disclosure, the NOx sensor is ceramic zirconium oxide NOx biography
Sensor.
Although some specific embodiments of the invention are described in detail by example, the skill of this field
Art personnel it should be understood that example above merely to being illustrated, the range being not intended to be limiting of the invention.The skill of this field
Art personnel are it should be understood that can without departing from the scope and spirit of the present invention modify to above embodiments.This hair
Bright range is defined by the following claims.
Claims (10)
1. a kind of vehicle-mounted NOx detection method, which comprises the steps of:
The instantaneous wet basis concentration NOx of NOx in Raw exhaust is acquired by NOx sensorconc, wherein NOxconcUnit be ppm；
Obtain instantaneous exhaust gas flow Gexh, wherein GexhUnit be kg/h；
According to NOxconcAnd Gexh, calculate instantaneous NOx emission flowWherein, NOxt's
Unit is g/s；
Acquire motor instant torque TtWith motor instant revolving speed nt, wherein TtUnit be Nm, ntUnit be r/min；
According to TtAnd nt, calculate instantaneous functionWherein, WtUnit be kWh；
According to NOxtAnd Wt, NOx function base window is calculated than discharge
2. vehicle-mounted NOx detection method according to claim 1, which is characterized in that instantaneous exhaust gas flow GexhAcquisition modes
It is as follows:
Acquire engine intake airflow and Engine Injection Mass；
Instantaneous exhaust gas flow GexhFor the sum of engine intake airflow and Engine Injection Mass.
3. vehicle-mounted NOx detection method according to claim 2, which is characterized in that engine intake airflow passes through air stream
Meter acquisition.
4. vehicle-mounted NOx detection method according to claim 2, which is characterized in that engine intake airflow by acquire into
Temperature degree and admission pressure, and be calculated according to intake air temperature and admission pressure.
5. according to claim 1 to vehicle-mounted NOx detection method described in 4 any one, which is characterized in that NOx sensor is pottery
Porcelain zirconium oxide NOx sensor.
6. a kind of vehicle-mounted NOx detection module, which is characterized in that for acquiring NOx instantaneous wet in Raw exhaust by NOx sensor
Base concentration NOxconc, and acquisition motor instant torque TtWith motor instant revolving speed nt；Obtain instantaneous exhaust gas flow Gexh；Root
According to NOxconcAnd Gexh, calculate instantaneous NOx emission flowAccording to TtAnd nt, calculate wink
Shi GongWtUnit be kWh；According to NOxtAnd Wt, NOx function base window is calculated than dischargeWherein, NOxconcUnit be ppm, GexhUnit be kg/h, NOxtUnit be g/s, TtUnit
For Nm, ntUnit be r/min.
7. vehicle-mounted NOx detection module according to claim 6, which is characterized in that the instantaneous exhaust gas flow GexhAcquisition
Mode is as follows:
Acquire engine intake airflow and Engine Injection Mass；
Instantaneous exhaust gas flow GexhFor the sum of engine intake airflow and Engine Injection Mass.
8. vehicle-mounted NOx detection module according to claim 7, which is characterized in that the engine intake airflow passes through sky
The acquisition of air-flow meter.
9. vehicle-mounted NOx detection module according to claim 7, which is characterized in that the engine intake airflow is by adopting
Collect intake air temperature and admission pressure, and is calculated according to intake air temperature and admission pressure speed.
10. the vehicle-mounted NOx detection module according to any one of claim 6 to 9, which is characterized in that the NOx sensor
For ceramic zirconium oxide NOx sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811550738.XA CN109655584A (en) | 2018-12-18 | 2018-12-18 | A kind of vehicle-mounted NOx detection method and module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811550738.XA CN109655584A (en) | 2018-12-18 | 2018-12-18 | A kind of vehicle-mounted NOx detection method and module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109655584A true CN109655584A (en) | 2019-04-19 |
Family
ID=66113323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811550738.XA Pending CN109655584A (en) | 2018-12-18 | 2018-12-18 | A kind of vehicle-mounted NOx detection method and module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109655584A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110132605A (en) * | 2019-05-21 | 2019-08-16 | 北京工业大学 | A kind of diesel engine NOxThan the rapid detection method of discharge |
| CN110608890A (en) * | 2019-08-05 | 2019-12-24 | 济南天业工程机械有限公司 | Engineering machine tool discharges test system |
| CN112216075A (en) * | 2020-09-10 | 2021-01-12 | 东风汽车集团有限公司 | Early warning method and early warning system for driving severity of vehicle |
| CN114636561A (en) * | 2022-03-10 | 2022-06-17 | 一汽解放汽车有限公司 | PEMS test method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016184A (en) * | 2012-11-07 | 2013-04-03 | 南岳电控(衡阳)工业技术有限公司 | Method and device for monitoring NOx emission capacity of electric control diesel engine EGR (Exhaust Gas Recirculation) system |
| CN103016121A (en) * | 2012-12-28 | 2013-04-03 | 潍柴动力股份有限公司 | Emission exceeding and aging detecting method and system |
| CN103114895A (en) * | 2013-01-24 | 2013-05-22 | 东风康明斯发动机有限公司 | Optimizing method for comprehensive economy of automotive diesel engine of selective catalytic reduction (SCR) route of EURO 4 and above |
| CN105181343A (en) * | 2015-05-25 | 2015-12-23 | 中国环境科学研究院 | Simple on-board emission test system and simple on-board emission test method applicable to heavy truck equipped with OBD |
| CN106150626A (en) * | 2016-08-30 | 2016-11-23 | 潍柴动力股份有限公司 | A kind of mechanical pump electromotor SCR device, control method and control device |
| CN108915825A (en) * | 2018-06-29 | 2018-11-30 | 郑州精益达环保科技有限公司 | A kind of machinery pump engine SCR control strategy |
-
2018
- 2018-12-18 CN CN201811550738.XA patent/CN109655584A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016184A (en) * | 2012-11-07 | 2013-04-03 | 南岳电控(衡阳)工业技术有限公司 | Method and device for monitoring NOx emission capacity of electric control diesel engine EGR (Exhaust Gas Recirculation) system |
| CN103016121A (en) * | 2012-12-28 | 2013-04-03 | 潍柴动力股份有限公司 | Emission exceeding and aging detecting method and system |
| CN103114895A (en) * | 2013-01-24 | 2013-05-22 | 东风康明斯发动机有限公司 | Optimizing method for comprehensive economy of automotive diesel engine of selective catalytic reduction (SCR) route of EURO 4 and above |
| CN105181343A (en) * | 2015-05-25 | 2015-12-23 | 中国环境科学研究院 | Simple on-board emission test system and simple on-board emission test method applicable to heavy truck equipped with OBD |
| CN106150626A (en) * | 2016-08-30 | 2016-11-23 | 潍柴动力股份有限公司 | A kind of mechanical pump electromotor SCR device, control method and control device |
| CN108915825A (en) * | 2018-06-29 | 2018-11-30 | 郑州精益达环保科技有限公司 | A kind of machinery pump engine SCR control strategy |
Non-Patent Citations (2)
| Title |
|---|
| 冯涛等: "氧化锆基片式NOx气体传感器的研制", 《传感器世界》 * |
| 北京市环境保护局等: "DB11/965-2017重型汽车排气污染物排放限值及测量方法（车载法 第IV、V阶段）", 《北京市地方标准》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110132605A (en) * | 2019-05-21 | 2019-08-16 | 北京工业大学 | A kind of diesel engine NOxThan the rapid detection method of discharge |
| CN110132605B (en) * | 2019-05-21 | 2021-06-04 | 北京工业大学 | Diesel engine NOxRapid detection method of specific emission |
| CN110608890A (en) * | 2019-08-05 | 2019-12-24 | 济南天业工程机械有限公司 | Engineering machine tool discharges test system |
| CN112216075A (en) * | 2020-09-10 | 2021-01-12 | 东风汽车集团有限公司 | Early warning method and early warning system for driving severity of vehicle |
| CN112216075B (en) * | 2020-09-10 | 2021-11-30 | 东风汽车集团有限公司 | Early warning method and early warning system for driving severity of vehicle |
| CN114636561A (en) * | 2022-03-10 | 2022-06-17 | 一汽解放汽车有限公司 | PEMS test method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109655584A (en) | A kind of vehicle-mounted NOx detection method and module | |
| US9086342B2 (en) | Emissions measuring system | |
| US20070131038A1 (en) | Real-time particulate matter measuring system | |
| US8527179B2 (en) | Method and device for measuring the emissions of engines | |
| JP2014514535A5 (en) | ||
| CN111911270A (en) | Method for measuring vehicle pollutant emission using on-board system | |
| CN111238570A (en) | Ship exhaust pollutant detection system and method | |
| CN206419089U (en) | The equipment of nitrogen oxide emission in a kind of detection vehicle exhaust | |
| CN106872001A (en) | A kind of motor-vehicle tail-gas detection method and system | |
| CN111780982A (en) | Vehicle-mounted simple emission testing device and method for non-road diesel engine | |
| US20150143869A1 (en) | Method for internal combustion engine exhaust flow measurement calibration and operation | |
| Jaworski et al. | Assessment of the emission of harmful car exhaust components in real traffic conditions | |
| CN207976443U (en) | Improve the detecting system of heavy goods vehicles exhaust contaminant vehicle load measurement precision | |
| CN215263401U (en) | Portable emission test system | |
| Gonçalves et al. | On-road measurements of emissions and fuel consumption of gasoline fuelled light duty vehicles | |
| CN106226210A (en) | A kind of tail gas monitor | |
| Shade | A performance evaluation of the MEMS: An on-road emissions measurement system study | |
| Manchur et al. | Time resolution effects on accuracy of real-time NOx emissions measurements | |
| TW201504625A (en) | On-board dynamic exhaust air pollution analysis device and inspection method thereof | |
| CN207263728U (en) | A kind of motor vehicle exhaust emission pollutant real-time detecting system | |
| US20040184962A1 (en) | Method and device for assessing the operativeness of a device for reducing the ozone content in the air | |
| Wiśniowski et al. | Representativeness of emissions of toxic substances in bench tests reflecting the road traffic conditions of a vehicle | |
| Alves et al. | Emissions of Euro 3-5 passenger cars measured over different driving cycles | |
| CN211263635U (en) | Testing device for detection and metrological verification of vehicle-mounted diagnostic equipment | |
| US20030131650A1 (en) | Method for balancing ozone sensors |
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 | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 230601 No. 99 Ziyun Road, Hefei Economic and Technological Development Zone, Anhui Province Applicant after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: 230601 No. 669 Shixin Road, Taohua Industrial Park, Hefei City, Anhui Province Applicant before: Anhui Jianghuai Automobile Group Limited by Share Ltd |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190419 |