What does the China V vehicle emission standard mean?
1 Answers
It refers to China VI, which is the China 6 emission standard. Below is a detailed introduction to the China 6 emission standard: 1. Implementation timeline: Starting from 2019, various cities and regions across China gradually began implementing the China 6 standard, known as the most stringent emission standard in history. The initial China 6 standard implemented was China 6a, which was not very strict, while China 6b represents the true China 6 standard. China 6a served as a transitional standard from China 5 to China 6, with China 6b expected to be officially implemented in 2023. 2. Differences between China 6 and China 5 emission standards: In the China 6b phase, most indicators are 50% stricter than China 5 standards. According to estimates, under the China 6 standard, light gasoline vehicles will see approximately 50% reductions in carbon monoxide, hydrocarbons, non-methane total hydrocarbons, and nitrogen oxide emissions compared to China 5, with particulate matter emissions decreasing by about 40%. For heavy-duty diesel vehicles, nitrogen oxides and particulate matter will be reduced by over 60% compared to China 5. Considering that vehicle exhaust accounts for 20%~40% of air pollution in first-tier cities, implementing China 6 can bring a noticeable improvement of over 10% in urban air quality.
