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Program of Pattern Evaluation of Vehicle Exhaust Emissions Measuring Instrument
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JJF 1481-2014
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PDF similar to JJF 1481-2014
Standard similar to JJF 1481-2014 GB/T 19836 QC/T 727 JJG 527 Basic data | Standard ID | JJF 1481-2014 (JJF1481-2014) | | Description (Translated English) | Program of Pattern Evaluation of Vehicle Exhaust Emissions Measuring Instrument | | Sector / Industry | Metrology & Measurement Industry Standard | | Classification of Chinese Standard | T39 | | Word Count Estimation | 56,581 | | Date of Issue | 8/25/2014 | | Date of Implementation | 11/25/2014 | | Quoted Standard | JJG 688-2007; GB/T 11606; GB 18285-2005; ISO/PAS 3930-2009 | | Adopted Standard | ISO/PAS 3930-2009(E), MOD | | Regulation (derived from) | People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine Notice 2014 (No. 95); AQSIQ Notice 2014 No. 95 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine | | Summary | This Standard applies to classification and coding of 46.46 million automobiles exhaust gas tester type evaluation. | JJF 1481-2014: Program of Pattern Evaluation of Vehicle Exhaust Emissions Measuring Instrument---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Program of Pattern Evaluation of Vehicle Exhaust Emissions Measuring Instrument
People's Republic of China National Metrology Technical Specifications
Automotive exhaust gas tester type evaluation outline
Issued on. 2014-08-25
2014-11-25 implementation
The State Administration of Quality Supervision, Inspection and Quarantine released
Automotive exhaust gas tester type evaluation outline
Focal point. the National Technical Committee of Legal Metrology measurement management
Main drafting unit. Measurement and Testing Institute of Inner Mongolia Autonomous Region
Guangdong Provincial Institute of Metrology
China Metrology Association
Participated in the drafting unit. Beijing Institute of Metrology detection
Anhui Institute of Metrology
Foshan Analyzer Ltd.
This specification commissioned by the responsible National Technical Committee of Legal Metrology measurement management explained
The main drafters of this specification.
Yan Jun (Inner Mongolia Metrology Institute)
Right Xiaojing (Guangdong Institute of Metrology)
Luo Xinyuan (China Metrology Association)
Drafters participate.
Guo Xiaodong (Inner Mongolia Metrology Institute)
Liu Yu (Beijing Institute of Metrology detection)
Li Wei g (Anhui Institute of Metrology)
CHANG (Foshan Analyzer Ltd.)
table of Contents
Introduction (Ⅲ)
1 Scope (1)
2. References (1)
3 Terms (1)
3.1 NDIR method (1)
3.2 electrochemical analysis (1)
3.3 Propane/hexane equivalency factors (1)
3.4 Low Flow (1)
3.5 excess air ratio (1)
4 Overview (2)
5 legal management requirements (3)
5.1 units of measurement (3)
Flag 5.2 (3)
6 measurement requirements (3)
6.1 Minimum measuring range, accuracy classes and maximum permissible errors (3)
6.2 Resolution (4)
6.3 Stability (4)
6.4 Repeatability (4)
6.5 Response Time (4)
6.6 Propane/hexane equivalency factors (5)
6.7 λ value (5)
7 General Requirements (5)
7.1 Appearance and structure (5)
7.2 functional requirements (5)
7.3 environmental adaptability (6)
8 pattern evaluation item list (7)
9 provides prototype quantities and use prototypes (8)
9.1 provide technical review of documents (8)
9.2 Experimental Prototype (8)
9.3 Prototype use (9)
Test methods and conditions as well as data processing and compliance criteria 10 pilot projects (9)
10.1 metrological requirements (9)
10.2 General Requirements (14)
11 test items of measuring instruments and equipment used in the table (24)
12 Type Judgment (25) Results
Appendix A standard gas and the required concentration (26)
Appendix B pattern evaluation record format (28)
Introduction
This outline is applied to the evaluation of the type of automobile exhaust gas tester, and gives the evaluation of vehicle emissions
The basic test conditions and test methods for gas tester meets the performance requirements of the standard.
This outline is based on JJF 1015-2014 "measuring equipment type and universal norms" and JJF 1016-2014 "count
Evaluation of the amount of equipment type outline guidelines for the preparation, "prepared at the request. Technical content of this syllabus are largely modeled JJG688-
2007 "car exhaust gas tester," and some reference to ISO /PAS3930.2009 (E) "vehicle emission measurements
Emissions instruments - metrological and technical requirements; metering control and performance testing. "
The outline for the first time to develop.
Automotive exhaust gas tester type evaluation outline
1 Scope
This type of evaluation framework applicable to classification and coding of 46.46 million automobiles exhaust gas tester type evaluation.
2. References
JJG688-2007 automobile exhaust gas tester
GB/T 11606 analytical instruments environmental test methods
GB 18285-2005 ignition engine exhaust emission limits and measurement methods (two-speed idle
And BASM)
ISO /PAS3930.2009 (E) vehicle emission measuring instruments - metrological and technical requirements; metering tube
Management and performance testing (Instrumentsformeasuringvehicleexhaustemissions-metrologicaland
technicalrequirements; metrologicalcontrolandperformancetests)
For dated references, only the dated edition applies to this outline; undated reference documents
Member, the latest edition (including any amendments) applies to this outline.
3 Terms
3.1 NDIR analysis infraredspectroscopicanalysis
Based on different gas molecules (CO, CO2, HC, etc.) wavelength of the light absorbing characteristic different principles. will
Nondispersive infrared light through a gas, the gas is determined based on the extent of certain types of gas absorb different wavelengths of light
Analytical methods concentration.
3.2 electrochemical analysis electrochemicalanalysis
Oxidation (or reduction) reaction on the surface of the gas-sensitive electrode electrochemical principle work with gas
Change the current concentration in the reaction principle also change. Analytical methods to determine the gas concentration according to the size of the current response.
3.3 Propane/hexane equivalency factors (PEF) propane/hexaneequivalencyfactor
Automotive exhaust gas tester measured hydrocarbon (HC) content of n-hexane (C6H14) equivalent
To represent. When using propane (C3H8) gas test, PEF, n-hexane equivalent indication of propane calibration gas standards
Reference value ratio.
NOTE. This factor should be in the apparent position of each car exhaust gas tester to three significant digits permanently marked, the value of the coefficient
Usually between 0.490 ~ 0.540.
3.4 Low Flow lowflow
Sample gas flow rate is gradually reduced to make the tester shows error exceeding the maximum permissible error model 1/2 or make tester
Traffic response time exceeds Article 6.5 of the time.
Note. The sample gas is sampled gas, following the same.
3.5 excess air ratio (λ) excessairratio (GB 18285-20053.15)
1kg actual combustion of the fuel and the air quantity theoretically required amount of air mass ratio.
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