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Testing standard for environmental protection exhaust of in-use motor vehicles
2024-10-12
In accordance with the relevant provisions of "diesel vehicle pollutant emission limits and measurement methods (free acceleration method and loading deceleration method)" and "gasoline vehicle pollutant emission limits and measurement methods (double idle speed method and simple working condition method)" jointly issued by the Ministry of ecology and environment and the State Administration of market supervision and administrationFrom May 2029 onwards, our city will officially implement it in use.EMU environmental protection tail gasNew standards for machine testing.
Compared with the old standard, the new standard has five major changes:
2. The pollutant emission limit is tightened;
2. The on-board diagnostic system (OBD) inspection regulations have been added to check the OBD function and fault alarm processing of some existing vehicles;
3. The NOx test methods and limit requirements for diesel vehicles are increased, and the problem that there is no standard for NOx emissions from diesel vehicles in use is solved;
4, is to standardize the process and project of emission testing, visual inspection, OBD inspection, pollutant emission testing content and submission of relevant provisions;
5. The content and time limit of data recording, storage and recording are standardized.
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