What are the standards for China VI b?
2 Answers
The standards for China VI b: 1. The carbon monoxide emissions per kilometer driven must not exceed 500mg. 2. The non-methane hydrocarbon emissions per kilometer driven must not exceed 35mg. 3. The nitrogen oxide emissions per kilometer driven must not exceed 35mg. 4. The PM (particulate matter) emissions per kilometer driven must not exceed 3mg. Below is more information about the China VI standards: 1. The China VI emission standards are an upgraded version of the current China V emission standards, imposing stricter and more scientific requirements on vehicle tailpipe pollutant emissions. 2. A China VI vehicle is one that meets the national sixth-stage motor vehicle pollutant emission standards, while a China V vehicle meets the fifth-stage standards. Different emission standards have varying limits on vehicle pollutant emissions. From China I to China VI, the limits on vehicle tailpipe pollutant emissions have become increasingly stringent.
I've been in the car repair business for nearly twenty years. The China 6b standard is the latest national requirement for gasoline vehicle emissions, specifically targeting light-duty vehicles. It imposes stricter limits on pollutants: carbon monoxide emissions must not exceed 500 milligrams per kilometer, nitrogen oxides must be reduced to below 35 milligrams per kilometer, and the total hydrocarbons must be controlled within 50 milligrams per kilometer. Additionally, it introduces the Real Driving Emissions (RDE) test, meaning vehicles must meet standards even when driven on regular roads to prevent cheating in lab tests. There's also a limit on particulate matter count, which can't be too high—this demands advanced technology, requiring high-efficiency three-way catalytic converters to treat exhaust. In practical terms, China 6b vehicles emit significantly less, but during maintenance, care must be taken to prevent catalytic converter clogging to avoid performance issues. Overall, this upgraded standard has noticeably improved air quality, making driving out feel fresher.
