China Ministry of Ecology and Environment Issued a New Mandatory Emssion Standard for Diesel Fuelled Heavy-Duty Vehicles CHINA VI GB 17691-2018 English

China Ministry of Ecology and Environment Issued a New Mandatory Emssion Standard for Diesel Fuelled Heavy-Duty Vehicles CHINA VI GB 17691-2018 English 

GB 17691-2018 Limits and Measurement Methods for Emissions from Diesel Fuelled Heavy-Duty Vehicles (CHINA VI)

For the purpose of implementing the Environmental Protection Law of the People's Republic of China and the Law of the People's Republic of China on the Prevention and Control of Atmospheric Pollution, this Standard was established to prevent and control the exhaust emissions from motor vehicles installed with compression ignition engine (CIE) and gas fuelled positive ignition engine (PIE) and to improve ambient air quality.

With respect to China VI, this Standard specifies the limits and test methods for emissions of gaseous and particulate pollutants from the CIEs and the vehicles equipped with CIE, and the limits and measurement methods for emissions of gaseous pollutants from the NG/LPG fuelled PIEs and the vehicles installed with NG/LPG fuelled PIE.

This Standard applies to type test, conformity of production (COP) check, supervisory inspection of newly manufactured vehicles and in-service conformity check for the compression ignition engines and gas fuelled positive ignition engines installed on Category M1 vehicles with a GVW exceeding 3,500 kg and Categories M2, M3, N1, N2 and N3 vehicles, and for the above-mentioned vehicles.

Compared with GB 17691-2005 “Limits and Measurement Methods for Exhaust Pollutants from Compression Ignition and Gas Fuelled Positive Ignition Engines of Vehicles (III, IV, V)”, the significant changes are as follows:

− Imposed stricter limits for exhaust emissions, added the emission limit for particle number (PN) and modified the test cycle for exhaust pollutants;

− Added the requirements and limits for World-harmonized Not-To-Exceed (WNTE) emission test;

− Added the requirements and limits for Portable Emissions Measurement System (PEMS) emission test;

− Improved the durability requirements;

− Added the provisions on emission warranty period;

− Revised such technical requirements as monitoring items, thresholds and monitoring conditions for on-board diagnostics (OBD) system;

− Added the requirements for the position and orientation of tailpipe vent;

− Added the requirements for the NOx emission concentration at valid data points in real driving cycle;

− Added the requirements for reducing NOx emission from the parent engine;

− Revised the methods for checking and verifying the conformity of production and in-service conformity;

− Added the compliance requirements for newly manufactured vehicles;

− Added the requirements for type test of dual fuel engines;

− Added the requirements for type test of replacement pollution control devices.

As from the implementation date of this standard, GB 17691-2005 “Limits and Measurement Methods for Exhaust Pollutants from Compression Ignition and Gas Fuelled Positive Ignition Engines of Vehicles (III, IV, V)” and the content concerning gas fuelled positive ignition engines in GB 11340-2005 “Limits and measurement methods for crankcase pollutants From heavy-duty vehicles equipped with P.I engines” are replaced by this standard.

GB 17691-2018 was organized and formulated by the Department of Air Environmental Management and Department of Science, Technology and Standards under Ministry of Ecology and Environment.

GB 17691-2018 was drafted by Chinese Research Academy of Environmental Sciences, Jinan Automobile Test Center, Beijing Institute of Technology, China Automotive Technology and Research Center, Xiamen Environmental Protection Vehicle Emission Control Technology Center and Tsinghua University.

GB 17691-2018 was approved by the Ministry of Ecology and Environment on May 22, 2018.

GB 17691-2018 acts as the basis for type test from the date of issuance. As from July 1, 2019, all gas fuelled vehicles manufactured, imported, sold and registered shall comply with the requirements of the Standard; as from July 1, 2020, all urban vehicles manufactured, imported, sold and registered shall comply with the requirements of the Standard; as from July 1, 2021, all heavy-duty diesel vehicles manufactured, imported, sold and registered shall comply with the requirements of the Standard.

As from the date of issuance of GB 17691-2018, all relevant provincial standards shall be abolished or invalid.

As from the implementation date, GB 17691-2018 replaces GB 17691-2005 “Limits and Measurement Methods for Exhaust Pollutants from Compression Ignition and Gas Fuelled Positive Ignition Engines of Vehicles (III, IV, V)”.

GB 17691-2018 is interpreted by the Ministry of Ecology and Environment.

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