This standard is formulated for the purposes of enforcing the Environment Protection Law of the People’s Republic of China and the Air Pollution Prevention and Control Law of the People’s Republic of China, preventing and controlling the pollution of the exhaust pollutants from heavy-duty vehicles to the environment, and improving the environmental quality. This standard is a supplementary standard to the Limits and measurement methods for exhaust pollutants from compression ignition and gas fueled positive ignition engines of vehicles (CHINA III, IV, and V) (GB 17691-2005), and specifies the measurement method and technical specification for PEMS test of exhaust pollutants from heavy-duty diesel and gas fueled vehicles.

Measurement method and technical specification for PEMS test of exhaust pollutants from heavy-duty diesel and gas fueled vehicles

(HJ 857-2017)