HJ 857-2017 English PDF

Delivery: 3 seconds. Download true-PDF + Invoice.
Get Quotation: Click HJ 857-2017 (Self-service in 1-minute)
Historical versions (Master-website): HJ 857-2017
Preview True-PDF (Reload/Scroll-down if blank)

HJ 857-2017: Measurement method and technical specification for PEMS test of exhaust pollutants from heavy-duty diesel and gas fuelled vehicles
HJ 857-2017
On-board measurement method and technical requirements for exhaust pollutants of heavy duty diesel vehicles and gas fuel vehicles.
People's Republic of China national environmental protection standards
Heavy diesel vehicles, gas fuel vehicles exhaust pollutants vehicle
Measurement methods and technical requirements
Measurement method and technical specification for PEMS test of exhaust
pollutants from heavy-duty diesel and gas fuel vehicles
2017-09-19 Posted
2017-10-01 implementation
Ministry of Environmental Protection released
Directory
Foreword .1
1 Scope 2
2 Normative references 2
3 Terms and definitions .2
4 technical requirements and test 3
5 new production vehicle emissions compliance checks and in-use compliance check .4
6 standard implementation .5
Appendix A (Normative) Vehicle Emission Test Report Requirements .6
Appendix B (Normative) Heavy vehicles the actual road emission vehicle load measurement method 10
Foreword
According to "Environmental Protection Law of the People's Republic of China" and "Law of the People's Republic of China on Prevention and Control of Atmospheric Pollution", prevention and control of heavy
Automobile exhaust on the atmospheric pollution, improve environmental quality, the development of this standard.
This standard is the "car with compression ignition, gas-fired ignition engine and vehicle exhaust pollutant emission limits and measurement side
Act (China III, IV, V stage) "(GB 17691-2005), provides for heavy-duty diesel vehicles, gas-powered vehicles
Exhaust pollutants onboard measurement methods and technical requirements.
This standard reference to the United States 40 CFR PART 86 "New Road Vehicles, in-use vehicle and engine emissions control" and 40
CFR PRAT 1065 SUBPART J "Field Test and Portable Emissions Testing System", and Commission Regulation
No.582 /.2011 ANNEX II "In-service Conformity Inspection of Heavy Duty Engines and Vehicles" and the related technical contents of its Amendment,
Combined with the actual situation in our country and environmental management needs compiled.
This standard Appendix A, Appendix B is a normative appendix.
This standard is released for the first time.
This standard by the Environmental Protection Department of Atmospheric Environment Management Division, Science and Technology Standards Division organization.
This standard was drafted. China Academy of Environmental Sciences, Tsinghua University, China Automotive Technology Research Center.
This standard MEP approved on September 19,
This standard since October 1,.2017 implementation.
From the date of promulgation of this standard, relevant local standards shall be null and void.
This standard is interpreted by the MEP.
Heavy duty diesel vehicles, gaseous fuel vehicles exhaust pollutants vehicle measurement methods
And technical requirements
1 scope of application
This standard specifies the heavy-duty diesel vehicles, gas fuel vehicles exhaust pollutants vehicle measurement methods and technical requirements. Apply to
Meet the GB 17691-2005 fifth phase of the standard heavy-duty diesel vehicles, gas vehicles, new car emissions standards for inspection and at
Check with compliance.
This standard applies to the design speed is greater than 25km/h equipped with compression ignition, gas-fired ignition engine M2, M3,
N2 (but excluding low-speed trucks) and N3 class and the total mass of more than 3500kg M1 class car exhaust pollutant emissions measurement.
2 Normative references
The contents of this standard reference the following documents in the terms of any undated reference documents, the effective version applies to this
standard.
GB/T 12534 Automotive Road Test Methods
Classification of motor vehicles and trailers
GB 17691-2005 compression limit, gas-fired ignition engines and automotive exhaust emission limits and measurement
Method (China Ⅲ, Ⅳ, Ⅴ stage)
GB 18352.6-2016 Limits and measurement methods of light vehicle pollutant emissions (China's sixth phase)
HJ 437-2008 Automotive Compression Ignition, Gas-Fueled Ignition Engine and Automotive OBD Technology
HJ 438-2008 Automotive compression ignition, gas-fired ignition engine and vehicle emission control system durability technical requirements
HJ 689-2014 Limits and Measurement Methods of Exhaust Pollutant Emission from Diesel Engines for Urban Vehicles (WHTC Condition Method)
3 Terms and definitions
GB 17691-2005 and HJ 689-2014 established and the following terms and definitions apply to this standard.
3.1 Portable emission test system portable emissions measurement system PEMS
Can be installed in the car, while exhaust flow, pollutant concentration measurement, ambient temperature, humidity, atmospheric pressure measurement
And the engine speed, torque, load, vehicle speed, latitude and longitude and other relevant parameters of the real-time measurement or acquisition
Emissions testing system.
3.2 vehicle method PEMS method
The portable emission test system installed on the vehicle under test, the vehicle on the actual road exhaust emissions row
Put the measurement method.
3.3 transient cycle transient cycle
Transient cycle (ETC or WHTC) used for type checking of engine according to GB 17691-2005 or HJ 689-2014.
3.4 work-based window work-based window
A continuous interval from the end of the test to the end of the cut-off, when the accumulation in the interval is equal to the instantaneous cycle of the engine
When doing power, the continuous interval is defined as a power base window.
3.5 windows than the window brake-specific emissions
The ratio of the total mass of vehicle exhaust pollutant emissions to the amount of work done in the window within a work-based window, in g/kWh.
3.6 work-based window method work-based window method
The method of evaluating vehicle emissions by comparing the compliance of each GW window with emissions and engine type test emissions.
3.7 window average power percentage average window power percentage
The average power of the engine in the workbench window as a percentage of the maximum net power of the engine.
3.8 effective work-based window valid work-based window
A window with a window average power percentage greater than 20%.
If the window average power percentage is greater than 20% of the number of windows less than 50% of the total number of windows, the average window can work
The requirement of 20% of the rate of gradual decrease in steps of 1%, but the minimum can not be less than 15%.
3.9 valid data points valid data points
When the engine coolant temperature is above 70 ° C or when the coolant temperature is 5 minutes after the PEMS test is started
Within less than 2 ° C (whichever comes first, but not later than 20 minutes after the engine is started), until the end of the test
There are test data points.
3.10 short trip short trip
The vehicle travels from one idle end point to the next starting idle point.
4 technical requirements and tests
4.1 limit requirements
4.1.1 In accordance with the provisions of Article 4.2 of the test methods for heavy-duty diesel vehicles, gas fuel vehicles exhaust pollutant emissions measurement, pollution
Emissions should meet the emission limits specified in Table 1.
Table 1 Emission limits (g/kWh)
Phase CO NOx THC PM
Stage 5 ≤6.0 ≤4.0 Report (optional) Report (optional)
4.1.2 In accordance with the provisions of Article 4.2 of the test methods for heavy-duty diesel vehicles, gaseous fuel vehicles exhaust pollutants emission measurement, the fifth
Stage NOx emission concentration should not exceed 900ppm.
4.2 test method
Exhaust Pollutant Emission Tests The actual road discharge test shall be conducted in accordance with the methods specified in Appendix B.
4.3 determine the method
4.3.1 Test the validity of judgment
Effective work base window should account for more than 50% of all work base windows, otherwise the test is invalid, the test plan should be adjusted,
experimenting.
4.3.2 test vehicle compliance
a) For any of the contaminants specified in Article 4.1.1, the ratio of the active basis window that satisfies the emission limit requirement to the effective basis window
In case of 90% and above, the test vehicle shall be judged as discharge standard, otherwise it shall be determined as excessive discharge.
b) Among the valid data points, the ratio of data points whose NOx emission concentration meets the limit requirement of Article 4.1.2 to the effective data point
In case of 95% and above, the test vehicle shall be judged as discharge standard, otherwise, it shall be judged as excessive discharge.
5 new production vehicle emissions compliance checks and in-compliance checks
5.1 new production car emissions compliance inspection
5.1.1 Manufacturing enterprises should be in accordance with the requirements of this standard, to develop their own scientific and efficient self-inspection procedures, the new model (or Department
Ethnic) discharge standard self-examination, and self-examination results reported to the competent department of environmental protection.
5.1.2 When the department in charge of environmental protection examines the emission standard of new production vehicles of vehicles (or families), the vehicles from mass production
Vehicles were randomly selected 3 cars, according to the following rules to determine.
a) Choose one vehicle from the 3 vehicles drawn in Article 5.1.2 and carry out the actual road according to the method specified in Appendix B
Emission test. If the car meets the requirements of Article 4.1, then pass the test.
b) If the car does not meet the requirements of Article 4.1, and the manufacturer submits a written application, the competent department of environmental protection shall
The other two vehicles drawn in Article 5.1.2 shall be tested for actual road discharge according to the method specified in Appendix B. If two cars are
Meet the requirements of Article 4.1, then determine the pass, otherwise unqualified.
5.2 in compliance check
5.2.1 manufacturing enterprises in accordance with the provisions of this standard test methods in compliance with self-examination. In-service engine manufacturers
Sexual self-examination should be based on the engine model (or family). Vehicle manufacturers in compliance with the self-examination should be models (or
Family) as the basis. Engine type (or family), model (or family) pollutant discharge qualified or not according to Table 2
set.
- The minimum test sample size is 3 and the maximum is 10;
- If the number of vehicles that exceed the emission limit is less than or equal to the number of qualified decisions, the engine model (or family), model (or
Department of family) emissions were judged as qualified;
- If the number of vehicles that exceed the emission limit is greater than or equal to the number of non-conformities, the engine model (or family), model (or
Family) emissions were judged as unqualified;
- If the number of vehicles that exceed the emission limit can not be judged engine model (or family), model (or family) emissions and
No, increase the test sample one by one and continue the judgment.
Table 2 pass determination table (minimum sample size of 3)
5.2.2 The manufacturer shall submit every engine model (or family) to the environmental protection department every two years. The car
(Or family) in compliance with self-inspection report, the report should meet the requirements of Appendix A.
5.2.3 The department in charge of environmental protection may, in accordance with the test methods specified in this standard, carry out in-service compliance
check. Three vehicles were randomly selected to conduct the actual road discharge test, and the requirements of 5.1.2 were judged.
Number of samples
Exceeded the number of vehicles
Qualified to determine the unqualified
3 - 3
5.3 According to this standard for new car emissions compliance checks and in compliance with the inspection model, the results can be extended to meet
Other models required by Article 5.3.1.
5.3.1 Meet the following conditions at the same time, can be regarded as the same family of cars
a) Vehicles produced by the same manufacturer;
b) The chassis is made by the same manufacturer;
c) The same type of engine (or family);
d) vehicles of the same type, such as M1, M2, M3, N2, N3 vehicles (excluding urban vehicles), urban vehicles
Cars, postal vehicles and sanitation vehicles).
5.3.2 Family The family of cars may be extended to those manufactured by a modified car manufacturer that meet the requirements of sub-sections 5.3.1 b) to d).
5.4 for spot checks substandard products, manufacturing enterprises should immediately organize an investigation, as soon as possible to develop corrective measures, and report environmental protection
Protect the competent departments to ensure that products meet the requirements after rectification.
6 standard implementation
6.1 From October 1,.2017 onwards, according to GB 17691-2005 fifth stage standard new stereotypes (information disclosure) models,
Should be in accordance with the provisions of Article 5 of the new production vehicle emissions compliance checks and in-service compliance checks, and to meet the requirements of this standard limit to
begging.
6.2 Before October 1,.2017 has been set according to GB 17691-2005 fifth stage standard (information disclosure) models should be
Article 5.2 provides for compliance with the inspection, and the inspection results to the environmental protection department report.
Appendix A.
(Normative)
Vehicle emission test report requirements
A.1 General requirements
A.1.1 Manufacturer's name and address
A.1.2 assembly plant address
A.1.3 manufacturer's name, address, telephone number, fax number and e-mail address
A.1.4 Description of Types and Commercial Use (Variants Involved)
A.1.5 Engine family
A.1.6 source machine
A.1.7 Engine family members and model members
A.1.8 Test Vehicle Identification Number (VIN)
A.1.9 identification plate and nameplate location and marking methods
A.1.10 Vehicle category
A.1.11 Fuel Type. Such as diesel, natural gas, liquefied petroleum gas and so on
A.1.12 The number of type tests applicable to this model/mode...