This standard specifies the idling pollutant emission standard values ??for road gasoline vehicles. This standard applies to cars equipped with gasoline engines, with a maximum total mass greater than 400kg, and a maximum design speed equal to or greater than 50km/h. This standard also applies to automotive gasoline engines. GB 14761.5-1993 Idle Pollutant Emission Standard for Gasoline Vehicles GB14761.5-1993 Standard download and decompression password: www.bzxz.net

National standards of the People's Republic of China
Idle speed pollutant emission standard for gasoline vehicles
Emission standard for pollutants at idle speed from vehicle with petrol engineGB14761.5-93
Replaces GB3842-83||tt| |This standard is formulated in order to implement the "Environmental Protection Law of the People's Republic of China" and the "Atmospheric Pollution Prevention and Control Law of the People's Republic of China" and prevent and control environmental pollution caused by the exhaust of gasoline vehicles.
1 Subject content and scope of application
This standard specifies the idling pollutant emission standard values ??for road gasoline vehicles. This standard applies to cars equipped with gasoline engines, with a maximum total mass greater than 400kg, and a maximum design speed equal to or greater than 50km/h.
This standard also applies to automotive gasoline engines 2 Reference standards
GB/T3845 Gasoline vehicle idle speed pollutant measurement method 3 Terminology
3.1 Gasoline vehicle idle speed pollutants||tt| |Refers to the volumetric emission concentration of carbon monoxide (CO) and hydrocarbons (HC) emitted from the exhaust pipe of a gasoline vehicle engine under high-speed operating conditions. 3.2 Maximum total mass
refers to the technically allowable maximum mass stipulated by automobile manufacturers. 3.3 Light vehicles
refers to vehicles with a maximum total mass less than or equal to 3500kg. 3.4 Heavy-duty vehicles
refer to vehicles with a maximum total mass greater than 3500kg. 3.5 Finalized car (or engine)
refers to a car prototype (or engine prototype) whose engine and fuel system are newly introduced and newly designed. 3.6 Newly produced automobiles (or engines)
refer to automobiles (or engines) that are qualified for storage or leave the factory by the manufacturer. 3.7 Cars in use
refers to cars after the license plate is issued.
4 Measurement methods
The measurement method of idling pollutants of gasoline vehicles shall be implemented in accordance with the provisions of GB/T3845. The National Environmental Protection Administration approved the implementation on 1994-05-01 on November 8, 1994 | surface. Gasoline vehicle rapid pollutant emission standard value
item
item
co.%
car
car category
July 1995 Model cars before July 1, 1995
Newly produced cars before July 1, 1995 Cars in use before July 1, 1995 Model cars since July 1, 1995
1995 Newly produced automobiles since July 1, 2005
In-use automobile models produced since July 1, 1995
Note: 1) HC volume concentration value is based on n-hexane equivalent. 6 Standard Implementation Supervision
Light Vehicles
3.5
4.0
4.5
3.0
3.5
4.5|| tt||Heavy duty vehicle
4.0
4.5
5.0
3.5
4. 0
4. 5
The standards are supervised and implemented by environmental protection administrative departments at all levels. Additional notes:
This standard is proposed by the Pollution Management Department of the National Environmental Protection Administration. Four-stroke
light vehicle
900
1000
1 200
600
700
900||tt| |HC,ppm\
Heavy duty truck
1200
1500
2000
900
1000
1200|| tt||two-stroke
light vehiclewww.bzxz.net
6500
7000
8000
6000
6500
7500|| tt||Heavy-duty truck
7000
7800
9000
6500
7090
8000
This standard is issued by Beijing The Municipal Automobile Research Institute, the Highway Science Institute of the Ministry of Transport, and the Atmospheric Research Institute of the Chinese Academy of Environmental Sciences were responsible for drafting. The main drafters of this standard are Nai Yang, Li Guoxiang, Liu Xiling and Liu Yongping. The National Environmental Protection Administration is responsible for interpreting this standard. This standard is the first revision of GB3842-83 "Idle Pollutant Emission Standard for Gasoline Vehicles". :com
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