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GB 18352.6-2016: Limits and measurement methods for emissions from light-duty vehicles (CHINA 6)
GB 18352.6-2016
GB
NATIONAL STANDARD OF THE
PEOPLE?€?S REPUBLIC OF CHINA
ICS 13.040.50
Z 64
Replacing GB 18352.5-2013
Limits and measurement methods
for emissions from light-duty vehicles
(CHINA 6)
ISSUED ON. DECEMBER 23, 2016
IMPLEMENTED ON. JULY 01, 2020
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine;
Ministry of Environmental Protection.
Table of Contents
Foreword ... 4??
1 Scope ... 7??
2 Normative references ... 8??
3 Terms and definitions ... 10??
4 Pollution control requirements ... 17??
5 Type inspection ... 18??
6 Type inspection extension ... 29??
7 Production consistency ... 35??
8 In-use conformity ... 41??
9 Implementation of standard ... 42??
Appendix A (Normative) Type inspection material ... 44??
Appendix B (Informative) Type inspection report format ... 74??
Appendix C (Normative) Exhaust emission test after cold start at normal
temperature (type I test) ... 81??
Appendix D (Normative) Actual running pollutant emission test (type II test)
... 272??
Appendix E (Normative) Crankcase pollutant emission test (type III test) ... 354??
Appendix F (Normative) Evaporative pollutant emission test (type IV test)
... 357??
Appendix G (Normative) Pollution control device durability test (type V test)
... 384??
Appendix H (Normative) Emission test of CO, THC and NOx in exhaust after
cold start at low temperature (type VI test) ... 404??
Appendix I (Normative) Refueling pollutant emission test (type VII test) ... 411??
Appendix J (Normative) Onboard diagnostic (OBD) system ... 435??
Appendix K (Normative) Technical requirements for reference fuels ... 571??
Appendix L (Normative) Special requirements for LPG or natural gas (NG)
fueled vehicles ... 575??
Appendix M (Normative) Type inspection of alternative pollutant control device
for independent technical assembly ... 578??
Appendix N (Normative) Production consistency assurance requirements .. 591??
Appendix O (Normative) In-use conformity ... 594??
Appendix P (Normative) Technical requirements for vehicles using reactants in
exhaust aftertreatment systems ... 608??
Appendix Q (Normative) Emissions test procedures for vehicles with periodic
regeneration system ... 613??
Appendix R (Normative) Hybrid electric vehicle (HEV) test ... 619??
Foreword
In order to implement the ?€?Environmental Protection Law of the People's
Republic of China?€? and the ?€?Law of the People's Republic of China on
Prevention and Control of Atmospheric Pollution?€?, to prevent and control the
pollution of motor vehicles and improve the quality of the ambient air, this
standard is hereby formulated.
This standard specifies the requirements for the CHINA 6 type inspection
requirements, the consistency of production, and the inspection and
determination methods for conformity of emissions from light-duty vehicles.
Manufacturers are obliged to ensure that the vehicles they produce and sell
meet the requirements for in-use conformance of this standard.
Compared with GB 18352.5-2013 ?€?Limits and measurement methods for
emissions from light-duty vehicles (CHINA 5)?€?, the main changes in this
standard include.
- CHANGE the type I test cycle, TIGHTEN the pollutant emission limits, ADD
the measurement requirements for the number of particulate emissions
from gasoline vehicles;
- DESIGNATE the real driving emission (RDE) test as type II test;
- TIGHTEN the Type VI test items and limits;
- REVISE technical requirements for monitoring items, thresholds and
monitoring conditions for on-board diagnostic systems;
- REVISE the relevant requirements for obtaining vehicle on-board
diagnostic systems and vehicle maintenance and repair information;
- REVISE the determination method of production consistency inspection
and the relevant requirements for the in-use conformance inspection;
- REVISE the technical requirements for test fuels;
- ADD requirements for control of pollutants in the refueling process;
- ADD test requirements for hybrid electric vehicles.
This part of the standard modifies and uses European Union (EC) No 715/2007
?€?Regulations on Type Approval of Pollutants Emitted by Light Passenger
Vehicles and Commercial Vehicles and Regulations on Obtaining Maintenance
and Repair Information for Vehicles?€?, (EC) No 692/2008 ?€?Regulations on (EC)
the Implementation and Revision of (EC) No 715/2007 Regulations on Type
Approval of Pollutants Emitted by Light Passenger Vehicles and Commercial
Limits and measurement methods for emissions from
light-duty vehicles
(CHINA 6)
1 Scope
This standard specifies the emission limits and measurement methods for
exhaust emissions at normal temperature and low temperature, real driving
emission (RDE) exhaust emissions, crankcase pollutants, evaporative
emissions, and refueling pollutants, as well as the technical requirements and
measurement methods for the pollutant control device durability and on-board
diagnostics (OBD) systems of light-duty vehicles which are equipped with
ignition type engine.
This standard specifies the emission limits and measurement methods for
exhaust emissions at normal temperature and low temperature, real driving
emission (RDE) exhaust emissions, crankcase pollutants, as well as the
technical requirements and measurement methods for the pollutant control
device durability and on-board diagnostics (OBD) systems of light-duty vehicles
which are equipped with compression-ignition type engine.
This standard specifies the requirements and confirmation of light-duty vehicle
type inspection, production conformance and in-use conformity inspection and
determination methods.
This standard also specifies special requirements for the light-duty vehicles
which use liquefied petroleum gas (LPG) or natural gas (NG).
This standard also specifies the type inspection procedures for pollutant
emissions of the alternative pollutant control devices which are used as an
independent technology assembly and proposed to be installed on light-duty
vehicles.
This standard also specifies the technical requirements for vehicles that use
reactants in exhaust aftertreatment systems, as well as the emission test
procedures for vehicles that are equipped with periodic regenerative systems.
This standard applies to light-duty vehicles (including hybrid electric vehicles)
powered by ignition engines or compression-ignition engines with a maximum
design speed of 50 km/h or more.
Under the requirements of production companies, category M1, M2, N1 and N2
vehicles with a maximum design total mass of more than 3500 kg can be
subject to type inspection in accordance with this standard.
This standard does not apply to vehicles that have passed the CHINA 6 type
inspection in accordance with the provisions of GB 17691.
The use of vehicles whose fuel types are not contained in Appendix K may be
implemented with reference to the relevant provisions of this standard.
2 Normative references
The following documents or clauses therein are referenced in this standard. For
undated references, the latest edition is applicable to this standard.
GB 1495 Limits and measurement methods for noise emitted by accelerating
motor vehicles
GB 3847 Limits and measurement methods for exhaust smoke from C.I.E.
(Compression Ignition Engine) and vehicle equipped with C.I.E.
GB 7258 Safety specifications for power-driven vehicles operating on roads
GB/T 15089 Classification of power-driven vehicles and trailers
GB 17691 Limits and measurement methods for exhaust emissions from
compression ignition and gas fueled positive ignition engines of vehicles (III
IV V)
GB 18285 Limits and measurement methods for exhaust emissions from
vehicles equipped ignition engine under two-speed idle conditions and
simple driving mode conditions
GB/T 19001 Quality management system requirements
GB/T 27630 Guideline for air quality assessment of passenger car
HJ/T 390 Technical requirement for environmental protection product -
Control system of fuel evaporative emissions from vehicle with petrol engine
HJ 509 Determination of platinum, palladium and rhodium loading in the
vehicle-used ceramic catalytic converters - Inductive coupled plasma-optical
emission spectrometry and inductive coupled plasma-mass spectrometry
ISO 2575 Road vehicles - Symbols for controls, indicators and tell-tales
ISO 8422-1991 Sequential sampling plans for inspection by attributes
ISO 9141-2 Road vehicles - Diagnostic systems - Part 2. CARB
requirements for interchange of digital information
ISO 14230-4 Road vehicles - Diagnostic systems - Keyword Protocol 2000
- Part 4. Requirements for emission-related systems
ISO 15031-3 Road vehicles - Communication ceilings - Related diagnostics
- Part 3. Diagnostic connector and related electrical circuits, specification
and use
ISO 15031-4 Road vehicles - Communication between vehicle and external
equipment for emissions - related diagnostics - Part 4. External test
equipment
ISO 15031-5 Road vehicles - Communication between vehicle and external
equipment for emissions-related diagnostics - Part 5. Emissions-related
diagnostic services
ISO 15031-6 Road vehicles - Communication between vehicle and external
equipment for emissions-related diagnostics - Part 6. Diagnostic trouble
code definition
ISO 15031-7 Road vehicles - Communication between vehicle and external
equipment for emissions-related diagnostics - Part 7. Datalink security
ISO 15765-4 Road vehicles - Diagnostics on Controller Area Network (CAN)
- Part 4. Requirements for emissions-related systems
EN 1822 High efficiency air filters (EPA, HEPA and ULPA)
SAE J1850 Class B data communications network interface
SAE J2186 E/E datalink security
SAE J1930 Electronic system diagnostic items, definitions, and
abbreviations (equivalent to ISO/TR 15031-2)
SAE J1930-DA Electronic system diagnostic items, definitions and
abbreviations, and abbreviations website tool spreadsheet program
(equivalent to ISO/TR 15031-2)
SAE J1962 Diagnostic interface (equivalent to ISO/DIS 15031-3. December
14, 2001)
SAE J1978 OBDII scan tool (equivalent to ISO/DIS 15031-4. December 14,
2001)
SAE J1979 E/E diagnostic test mode
An apparatus or strategy that activates, adjusts, delays or stops the work of
a certain component or function of exhaust control system through
measuring, sensing or responding the operation parameters of vehicles (e.g.,
vehicle speed, engine speed, transmission gear, temperature, altitude,
intake manifold vacuum, or other parameters), to make the control effect of
the emission control system lower under normal use conditions of vehicles.
The following measures are not regarded as defeat devices.
(1) Measures required to protect the engine from damage or accidents and
to ensure safe driving of the vehicle;
(2) Measures that only work when the engine starts;
(3) Measure that does work in type I, type II, type III, type IV, type VI, and
type VII tests.
3.29
Reagent
An agent that is provided to the emission after-treatment system as required
by the emission control system, is stored on the vehicle but not used as fuel.
3.30
Periodically regenerating system
A catalytic converter, particle trap or other pollution control device that
requires a periodic regeneration process during normal vehicle operation not
exceeding 4000 km.
For a periodical regeneration system, emissions during the regeneration
phase can be exceeded. If at least one regeneration occurs during the type
I test after the pollution control device has undergone at least one
regeneration during the pretreatment period, the regeneration system shall
be considered as a continuous regeneration system and not applicable to
the test procedure of the periodical regeneration system as specified in
Appendix Q.
If the data provided by production companies to the environmental protection
authorities shows that the emissions during the regeneration phase are
lower than the limit of 5.3.1.4, the periodical regeneration system test
procedure may not be used, and a written statement may be made to the
environmental protection authority.
3.31
5.1.2 The production enterprise shall adopt technical measures to ensure that
the vehicle can effectively control its exhaust emissions, actual exhaust
emissions, crankcase pollutants, evaporative emissions, and refueling
emissions within the limits specified in this standard under normal use
conditions and normal life span. This also includes hoses and their joints used
in emission control systems, as well as the reliability of individual wiring, which
shall be manufactured to meet their original design requirements.
All vehicles shall be equipped with an OBD system that shall be designed,
manufactured, and installed on the vehicle to ensure that the vehicle recognizes
and records the type of degradation or failure throughout its full life.
If the provisions of clause 5 (type inspection), clause 7 (production consistency)
and clause 8 (in-use conformity) are satisfied, it is determined that the
requirements of these terms are satisfied.
It is forbidden to use defeat devices.
During the full life of the vehicle, the technical measures taken by the production
enterprises and the OBD system of the vehicle equipment shall not be
transformed, unless it is necessary to solve the problem of vehicle emission
defects, and the manufacturer has given written explanation of the
transformation.
5.1.3 One of the following measures shall be taken to prevent excessive
evaporative emissions or fuel spillage due to the loss of the fuel tank cap.
(1) Automatically opened and closed fuel tank caps that cannot be
removed;
(2) To prevent excessive evaporative emissions caused by the loss of the
fuel tank cap from the structural design;
(3) Any other measures with the same effect. For example, fastened fuel
tank cap; or otherwise the fuel tank cap is locked, and the vehicle
ignition share the same key, and ...