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GB 18285-2018: Limits and measurement methods for emissions from gasoline vehicles under two-speed idle conditions and short driving mode conditions
GB 18285-2018
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS
Replacing GB 18285-2005, HJ/T 240-2005
Limits and Measurement Methods for Emissions from
Gasoline Vehicles under Two-speed Idle Conditions and
Short Driving Mode Conditions
ISSUED ON: SEPTEMBER 27, 2018
IMPLEMENTED ON: MAY 1, 2019
Issued by: Ministry of Ecology and Environment of the People’s Republic of China;
State Administration for Market Regulation.
Table of Contents
Foreword ... 4 
1 Scope ... 6 
2 Normative References ... 6 
3 Terms and Definitions ... 7 
4 Inspection Items ... 10 
5 Inspection Procedures and Requirements ... 11 
6 Appearance Inspection ... 15 
7 On-board Diagnostic (OBD) System Inspection ... 15 
8 Exhaust Pollutant Detection ... 16 
9 Requirements for Data Recording, Storage and Submission ... 19 
10 Emission Monitoring of In-use Vehicles ... 20 
11 Implementation of the Standard ... 21 
Appendix A (normative) Two-speed Idle Conditions ... 23 
Appendix AA (normative) Technical Conditions of Two-speed Idle Emission Test
Instrument ... 28 
Appendix B (normative) Steady-state Loaded Mode ... 35 
Appendix BA (normative) Stipulations on the Loading of Chassis Dynamometer
... 61 
Appendix BB (normative) Requirements for Daily Inspection of Test Equipment
... 63 
Appendix BC (normative) Requirements for Detection Software ... 70 
Appendix BD (normative) Inspection Data Items of Steady-state Loaded Mode
... 78 
Appendix C (normative) Transient Loaded Mode ... 80 
Appendix D (normative) Simple Transient Loaded Mode ... 113 
Appendix DA (normative) Requirements for Daily Inspection of Test Equipment
... 145 
Appendix DB (normative) Requirements for Detection Software ... 153 
Appendix DC (normative) Inspection Data Items of Simple Transient Loaded
Mode... 161 
Appendix E (normative) Inspection of Fuel Evaporative Emission Control
System ... 164 
Appendix F (normative) On-board Diagnostic (OBD) System Inspection
Procedures ... 167 
Appendix FA (normative) Technical Requirements for OBD Diagnostic
Instrument ... 172 
Appendix FB (normative) OBD Inspection Data Items ... 175 
Appendix G (normative) Inspection Reports ... 177 
Appendix H (normative) Real-time Submitted Data Items ... 188 
Limits and Measurement Methods for Emissions from
Gasoline Vehicles under Two-speed Idle Conditions and
Short Driving Mode Conditions
1 Scope
This Standard specifies the limits and measurement methods for emissions from gasoline
vehicles under two-speed idle conditions, steady-state loaded mode, transient loaded mode and
simple transient loaded mode. Meanwhile, this Standard also specifies the methods and
determination bases for the appearance inspection, OBD inspection and evaporative emission
control system detection of gasoline vehicles.
This Standard is applicable to the inspection for new produced vehicle at end of production line,
inspection for register vehicle and inspection for in-use vehicle. This Standard also applies to
other vehicles equipped with ignition engines.
2 Normative References
The clauses of the following documents become clauses of this Standard through the references
in this Standard. In terms of references without a specified date, the latest version is applicable
to this Standard.
GB 5181-2001 Automotive Emission - Terms and Definitions
GB 14762-2008 Limits and Measurement Methods for Exhaust Pollutants from Gasoline
Engines of Heavy-duty Vehicles (III, IV)
GB/T 15089-2001 Classification of Power-driven Vehicles and Trailers
GB 17691 Limits and Measurement Methods for Exhaust Pollutants from Compression Ignition
and Gas Fueled Positive Ignition Engines of Vehicles
GB 17691-2018 Limits and Measurement Methods for Emissions from Diesel Fueled Heavy-
duty Vehicles (China VI)
GB 17930 Gasoline for Motor Vehicles
GB 18047 Compressed Natural Gas as Vehicle Fuel
GB 18352 Limits and Measurement Methods for Emissions from Light-duty Vehicles
GB 19159 Automotive Liquefied Petroleum Gases
6 Appearance Inspection
6.1 Inspection for New Produced Vehicle at End of Production Line
6.1.1 Check whether the pollution control device of the vehicle is consistent with the content
of the accompanying list of environmental protection information.
6.2 Registration
6.2.1 Check whether the content of the accompanying list of environmental protection
information is consistent with the information disclosure.
6.2.2 Check whether the pollution control device of the vehicle is consistent with the
accompanying list of environmental protection information.
6.3 In-use Vehicle
6.3.1 Check whether the condition of the vehicle under inspection is normal. If there is any
abnormality, the owner shall be requested to repair it.
6.3.2 Check whether the vehicle manifests engine oil burning or serious emission of black
smoke. If so, the owner shall be requested to repair it.
6.3.3 Check whether the connection of the connecting pipes of the evaporative emission control
system is correct and complete. If ageing, fracturing, damage or blockage is found, the owner
shall be requested to repair it. This inspection is not required for mono-fuel vehicles.
6.3.4 Check whether the appearance of the engine exhaust pipe, exhaust muffler and exhaust
post-treatment device, and whether the installation and fastening parts are in good condition. If
corrosion, air leakage, damage or looseness is found, the owner shall be requested to repair it.
6.3.5 Check whether the vehicle is equipped with an OBD system.
6.3.6 Determine whether the vehicle is suitable for the simple driving mode detection, if not
(such as: full-time four-wheel drive and timely four-wheel drive that cannot manually switch
the two-wheel drive mode), it shall be marked. If the simple driving mode detection is
conducted, it shall be confirmed whether there is foreign matter on the surface of the vehicle
tires.
6.3.7 During the inspection for altered registration and transferred registration, check whether
the pollution control device is in good condition.
7 On-board Diagnostic (OBD) System Inspection
7.1 New Produced Vehicle at End of Production Line
7.1.1 Automobile manufacturers shall check the communication of the OBD system of each
vehicle and confirm that the communication of the OBD system is properly working before it
exits the factory.
7.2 Registration
7.2.1 Check whether the OBD interface of the vehicle satisfies the specified requirements,
whether the OBD communication is normal, and whether there is a fault code.
7.3 In-use Vehicle
7.3.1 For in-use vehicles equipped with the OBD system, after completing the appearance
inspection, the OBD diagnostic instrument shall be connected for OBD inspection. During the
subsequent pollutant emission inspection, the OBD diagnostic instrument must not be
disconnected.
7.3.2 The OBD inspection items include: fault indicator status, fault indicator status actually
read by the diagnostic instrument, fault code, traveled distance after the MIL light is on and
diagnostic readiness value. The specific inspection procedures shall comply with the
stipulations of Appendix F.
7.3.3 If the fault indicator fault (including circuit fault), fault indicator activation,
communication fault between the vehicle and the OBD diagnostic instrument, and instrument
panel fault indicator status of the vehicle are inconsistent with the fault indicator status recorded
in ECU, the vehicle shall be de...